Form 10-Q - Quarterly report [Sections 13 or 15(d)]

United States

Securities and Exchange Commission

Washington, D.C. 20549

FORM 10-Q

(Mark One)


☒			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 28, 2024


☐			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ___ to ___

Commission file number 0-20388

LITTELFUSE, INC.

(Exact name of registrant as specified in its charter)


Delaware		36-3795742
(State or other jurisdiction of incorporation or organization)		(I.R.S. Employer Identification No.)
8755 West Higgins Road
Suite 500
Chicago	Illinois	60631
(Address of principal executive offices)		(ZIP Code)

Registrant’s telephone number, including area code: 773-628-1000

Securities registered pursuant to Section 12(b) of the Act:

Title of Each Class

Trading Symbol

Name of exchange on which registered

Common Stock, $0.01 par value

LFUS

NASDAQ

Global Select Market

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes [X] No [ ]

Indicate by check mark whether the registrant has submitted electronically, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes [X] No ☐

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (Section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes [X] No [ ]

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act (Check one): Large accelerated filer [X] Accelerated filer [ ] Non-accelerated filer [ ] Smaller reporting company ☐ Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Yes [ ] No [ ]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No [X]

As of October 25, 2024, the registrant had outstanding 24,814,687 shares of Common Stock, net of Treasury Shares.

Table of Contents

TABLE OF CONTENTS


		Page

PART I	FINANCIAL INFORMATION
Item 1.	Financial Statements
	Condensed Consolidated Balance Sheets as of September 28, 2024 (unaudited) and December 30, 2023	3
	Condensed Consolidated Statements of Net Income for the three and nine months ended September 28, 2024 (unaudited) and September 30, 2023 (unaudited)	4
	Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 28, 2024 (unaudited) and September 30, 2023 (unaudited)	5
	Condensed Consolidated Statements of Cash Flows for the nine months ended September 28, 2024 (unaudited) and September 30, 2023 (unaudited)	6
	Condensed Consolidated Statements of Stockholders' Equity for the nine months ended September 28, 2024 (unaudited) and September 30, 2023 (unaudited)	7
	Notes to Condensed Consolidated Financial Statements (unaudited)	9
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
Item 3.	Quantitative and Qualitative Disclosures About Market Risk	41
Item 4.	Controls and Procedures	42
PART II	OTHER INFORMATION
Item 1.	Legal Proceedings	42
Item 1A.	Risk Factors	42
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds	42
Item 3.	Defaults Upon Senior Securities	43
Item 4.	Mine Safety Disclosures	43
Item 5.	Other Information	43
Item 6.	Exhibits	44
Signatures		45

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ITEM 1. FINANCIAL STATEMENTS

LITTELFUSE, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS


	(Unaudited)
(in thousands, except share and per share data)	September 28, 2024		December 30, 2023
ASSETS
Current assets:
Cash and cash equivalents (Note 1)	$	629,670	$	555,513
Short-term investments	1,011		235
Trade receivables, less allowances of $76,151 and $84,696 at September 28, 2024 and December 30, 2023, respectively	338,758		287,018
Inventories (Note 3)	453,781		474,607
Prepaid income taxes and income taxes receivable	6,793		8,701
Prepaid expenses and other current assets	132,510		82,526
Total current assets	1,562,523		1,408,600











Net property, plant, and equipment (Note 4)	481,592		493,153
Intangible assets, net of amortization (Note 5)	560,994		606,136
Goodwill (Note 5)	1,317,748		1,309,998
Investments	26,607		24,821
Deferred income taxes	11,955		10,486
Right of use lease assets	60,277		62,370
Other long-term assets	40,548		79,711
Total assets	$	4,062,244	$	3,995,275
LIABILITIES AND EQUITY
Current liabilities:
Accounts payable	$	179,486	$	173,535



Accrued liabilities (Note 6)	152,772		149,214
Accrued income taxes	39,809		38,725
Current portion of long-term debt (Note 8)	67,799		14,020
Total current liabilities	439,866		375,494
Long-term debt, less current portion (Note 8)	799,949		857,915
Deferred income taxes	95,554		110,820
Accrued post-retirement benefits	31,373		34,422
Non-current lease liabilities	52,074		49,472
Other long-term liabilities	70,328		86,671
Total liabilities	$	1,489,144	$	1,514,794
Commitments and contingencies (Note 15)
Shareholders’ equity:
Common stock, par value $0.01 per share: 34,000,000 shares authorized; shares issued, September 28, 2024–26,749,671; December 30, 2023–26,624,071	262		262
Additional paid-in capital	1,043,736		1,012,325
Treasury stock, at cost: 1,936,668 and 1,711,290 shares, respectively	(305,259)		(259,263)
Accumulated other comprehensive loss	(50,782)		(55,817)
Retained earnings	1,884,823		1,782,662
Littelfuse, Inc. shareholders’ equity	2,572,780		2,480,169
Non-controlling interest	320		312
Total equity	2,573,100		2,480,481
Total liabilities and equity	$	4,062,244	$	3,995,275

See accompanying Notes to Condensed Consolidated Financial Statements.

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LITTELFUSE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF NET INCOME

(Unaudited)


	Three Months Ended				Nine Months Ended
(in thousands, except per share data)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Net sales	$	567,390	$	607,071	$	1,661,263	$	1,828,850
Cost of sales	351,498		380,200		1,050,559		1,122,190
Gross profit	215,892		226,871		610,704		706,660

Selling, general, and administrative expenses	83,897		87,204		263,395		270,057

Research and development expenses	26,470		25,484		81,283		77,270
Amortization of intangibles	15,864		16,022		47,418		49,773
Restructuring, impairment, and other charges	1,840		4,516		10,329		13,221
Total operating expenses	128,071		133,226		402,425		410,321
Operating income	87,821		93,645		208,279		296,339

Interest expense	9,772		10,101		29,358		29,803
Foreign exchange loss	9,630		11,776		4,273		8,697
Other income, net	(9,297)		(3,527)		(19,916)		(11,810)
Income before income taxes	77,716		75,295		194,564		269,649
Income taxes	19,658		17,507		42,588		53,045
Net income	$	58,058	$	57,788	$	151,976	$	216,604

Earnings per share:
Basic	$	2.34	$	2.32	$	6.12	$	8.72
Diluted	$	2.32	$	2.30	$	6.07	$	8.63

Weighted-average shares and equivalent shares outstanding:
Basic	24,796		24,893		24,822		24,838
Diluted	25,025		25,143		25,040		25,100

See accompanying Notes to Condensed Consolidated Financial Statements.

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LITTELFUSE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Unaudited)


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Net income	$	58,058	$	57,788	$	151,976	$	216,604
Other comprehensive income (loss):
Defined benefit pension plan and other adjustments, net of tax	191		(3)		861		(156)


Cash flow hedges, net of tax	(8,297)		1,546		(6,389)		2,141
Foreign currency translation adjustments	64,499		(3,677)		10,563		(5,747)
Comprehensive income	$	114,451	$	55,654	$	157,011	$	212,842

See accompanying Notes to Condensed Consolidated Financial Statements.

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LITTELFUSE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited)


	Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023
OPERATING ACTIVITIES
Net income	$	151,976	$	216,604
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	51,025		53,510
Amortization of intangibles	47,418		49,773

Deferred revenue	(1,764)		1,769

Impairment charges	933		4,742

Stock-based compensation	21,428		20,132
(Gain) loss on investments and other assets	(1,947)		922

Deferred income taxes	(16,346)		(689)
Other	690		7,829
Changes in operating assets and liabilities:
Trade receivables	(50,672)		(21,752)
Inventories	19,865		66,456
Accounts payable	5,460		(38,475)



Accrued liabilities and income taxes	(19,434)		(61,359)
Prepaid expenses and other assets	(1,633)		13,678
Net cash provided by operating activities	206,999		313,140
INVESTING ACTIVITIES
Acquisitions of businesses, net of cash acquired	—		(198,810)

Purchases of property, plant, and equipment	(50,065)		(63,166)
Net proceeds from sale of property, plant and equipment, and other	8,931		597
Net cash used in investing activities	(41,134)		(261,379)
FINANCING ACTIVITIES




Repayments of other debts	(2,037)		(2,027)
Payments of term loan	(3,750)		(5,625)

Net proceeds related to stock-based award activities	5,037		6,481
Repurchases of common stock	(40,862)		—

Cash dividends paid	(49,687)		(45,973)
Net cash used in financing activities	(91,299)		(47,144)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(396)		(7,965)
Increase (decrease) in cash, cash equivalents, and restricted cash	74,170		(3,348)
Cash, cash equivalents, and restricted cash at beginning of period	557,123		564,939
Cash, cash equivalents, and restricted cash at end of period	$	631,293	$	561,591
Supplementary Cash Flow Information
Reconciliation of cash and cash equivalents:
Cash and cash equivalents	$	629,670	$	560,056

Restricted cash included in other long-term assets	$	1,623	$	1,535
Cash paid during the period for interest	$	30,094	$	33,177

Capital expenditures, not yet paid	$	9,217	$	9,780

See accompanying Notes to Condensed Consolidated Financial Statements.

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LITTELFUSE, INC.

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY

(Unaudited)


	Littelfuse, Inc. Shareholders’ Equity
(in thousands, except share and per share data)	Common Stock		Addl. Paid in Capital		Treasury Stock		Accum. Other Comp. Loss		Retained Earnings		Non-controlling Interest		Total
Balance at December 30, 2023	$	262	$	1,012,325	$	(259,263)	$	(55,817)	$	1,782,662	$	312	$	2,480,481
Net income	—		—		—		—		48,452		—		48,452



Other comprehensive loss, net of tax	—		—		—		(30,291)		—		—		(30,291)
Stock-based compensation	—		3,617		—		—		—		—		3,617
Non-controlling interest	—		—		—		—		2		(2)		—
Withheld shares on restricted share units for withholding taxes	—		—		(4)		—		—		—		(4)
Stock options exercised	—		1,369		—		—		—		—		1,369
Repurchases of common stock	—		—		(16,131)		—		—		—		(16,131)
Cash dividends paid ($0.65 per share)	—		—		—		—		(16,200)		—		(16,200)
Balance at March 30, 2024	$	262	$	1,017,311	$	(275,398)	$	(86,108)	$	1,814,916	$	310	$	2,471,293
Net income	—		—		—		—		45,466		—		45,466



Other comprehensive loss, net of tax	—		—		—		(21,067)		—		—		(21,067)
Stock-based compensation	—		13,271		—		—		—		—		13,271
Non-controlling interest	—		—		—		—		(48)		48		—
Withheld shares on restricted share units for withholding taxes	—		—		(4,754)		—		—		—		(4,754)
Stock options exercised	—		2,392		—		—		—		—		2,392
Repurchase of common stock, with excise tax					(24,984)								(24,984)


Cash dividends paid ($0.65 per share)	—		—		—		—		(16,130)		—		(16,130)
Balance at June 29, 2024	$	262	$	1,032,974	$	(305,136)	$	(107,175)	$	1,844,204	$	358	$	2,465,487
Net income	—		—		—		—		58,058		—		58,058



Other comprehensive gain, net of tax	—		—		—		56,393		—		—		56,393
Stock-based compensation	—		4,540		—		—		—		—		4,540
Non-controlling interest									(82)		(38)		(120)
Withheld shares on restricted share units for withholding taxes	—		—		(188)		—		—		—		(188)
Stock options exercised	—		6,222										6,222
Excise tax adjustment on stock options exercised	—		—		65		—		—		—		65

Cash dividends paid ($0.70 per share)	—		—		—		—		(17,357)		—		(17,357)
Balance at September 28, 2024	$	262	$	1,043,736	$	(305,259)	$	(50,782)	$	1,884,823	$	320	$	2,573,100

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	Littelfuse, Inc. Shareholders’ Equity
(in thousands, except share and per share data)	Common Stock		Addl. Paid in Capital		Treasury Stock		Accum. Other Comp. Income (Loss)		Retained Earnings		Non-controlling Interest		Total
Balance at December 31, 2022	$	261	$	974,097	$	(252,866)	$	(95,764)	$	1,585,466	$	184	$	2,211,378
Net income	—		—		—		—		88,745		—		88,745



Other comprehensive income, net of tax	—		—		—		13,283		—		—		13,283
Stock-based compensation	—		3,730		—		—		—		—		3,730
Non-controlling interest	—		—		—		—		(66)		66		—
Withheld shares on restricted share units for withholding taxes	—		—		(18)		—		—		—		(18)
Stock options exercised	—		5,238		—		—		—		—		5,238

Cash dividends paid ($0.60 per share)	—		—		—		—		(14,880)		—		(14,880)
Balance at April 1, 2023	$	261	$	983,065	$	(252,884)	$	(82,481)	$	1,659,265	$	250	$	2,307,476
Net income	—		—		—		—		70,071		—		70,071



Other comprehensive loss, net of tax	—		—		—		(14,911)		—		—		(14,911)
Stock-based compensation	—		12,545		—		—		—		—		12,545
Non-controlling interest	—		—		—		—		(45)		45		—
Withheld shares on restricted share units for withholding taxes	—		—		(5,999)		—		—		—		(5,999)
Stock options exercised	—		2,979		—		—		—		—		2,979


Cash dividends paid ($0.60 per share)	—		—		—		—		(14,910)		—		(14,910)
Balance at July 1, 2023	$	261	$	998,589	$	(258,883)	$	(97,392)	$	1,714,381	$	295	$	2,357,251
Net income	—		—		—		—		57,788		—		57,788



Other comprehensive loss, net of tax	—		—		—		(2,134)		—		—		(2,134)
Stock-based compensation	—		3,857		—		—		—		—		3,857
Non-controlling interest	—		—		—		—		(50)		50		—
Withheld shares on restricted share units for withholding taxes	—		—		(308)		—		—		—		(308)
Stock options exercised	1		4,587		—		—		—		—		4,588


Cash dividends paid ($0.65 per share)	—		—		—		—		(16,183)		—		(16,183)
Balance at September 30, 2023	$	262	$	1,007,033	$	(259,191)	$	(99,526)	$	1,755,936	$	345	$	2,404,859

See accompanying Notes to Condensed Consolidated Financial Statements.

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Notes to Condensed Consolidated Financial Statements

1. Summary of Significant Accounting Policies and Other Information

Nature of Operations

Founded in 1927, Littelfuse, Inc. ("Littelfuse" or the "Company") is a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 16,000 global associates, the Company partners with customers to design and deliver innovative, reliable solutions. Serving over 100,000 end customers, the Company’s products are found in a variety of industrial, transportation and electronics end markets – everywhere, every day.

Basis of Presentation

The Company’s accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”) for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, certain information and disclosures normally included in the consolidated balance sheets, statements of net income and comprehensive income, statements of cash flows, and statements of stockholders' equity prepared in conformity with U.S. GAAP have been condensed or omitted as permitted by such rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. They have been prepared in accordance with accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended December 30, 2023, which should be read in conjunction with the disclosures therein. In the opinion of management, all adjustments considered necessary for a fair presentation have been included and are of a normal, recurring nature. Operating results for interim periods are not necessarily indicative of annual operating results.

Revenue Recognition

Revenue Disaggregation

The following tables disaggregate the Company’s revenue by primary business units for the three and nine months ended September 28, 2024 and September 30, 2023:


	Three Months Ended September 28, 2024								Nine Months Ended September 28, 2024
(in thousands)	Electronics Segment		Transportation Segment		Industrial Segment		Total		Electronics Segment		Transportation Segment		Industrial Segment		Total
Electronics – Semiconductor	$	151,954	$	—	$	—	$	151,954	$	469,389	$	—	$	—	$	469,389
Electronics – Passive Products and Sensors	152,234		—		—		152,234		431,543		—		—		431,543
Commercial Vehicle Products	—		82,077		—		82,077		—		242,350		—		242,350
Passenger Car Products	—		71,299		—		71,299		—		210,597		—		210,597
Automotive Sensors	—		18,005		—		18,005		—		57,764		—		57,764
Industrial Products	—		—		91,821		91,821		—		—		249,620		249,620
Total	$	304,188	$	171,381	$	91,821	$	567,390	$	900,932	$	510,711	$	249,620	$	1,661,263

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	Three Months Ended September 30, 2023								Nine Months Ended September 30, 2023
(in thousands)	Electronics Segment		Transportation Segment		Industrial Segment		Total		Electronics Segment		Transportation Segment		Industrial Segment		Total
Electronics – Semiconductor	$	191,523	$	—	$	—	$	191,523	$	598,813	$	—	$	—	$	598,813
Electronics – Passive Products and Sensors	152,410		—		—		152,410		453,860		—		—		453,860
Commercial Vehicle Products	—		81,290		—		81,290		—		248,765		—		248,765
Passenger Car Products	—		72,524		—		72,524		—		200,104		—		200,104
Automotive Sensors	—		23,205		—		23,205		—		66,839		—		66,839
Industrial Products	—		—		86,119		86,119						260,469		260,469
Total	$	343,933	$	177,019	$	86,119	$	607,071	$	1,052,673	$	515,708	$	260,469	$	1,828,850

See Note 14, Segment Information, for net sales by segment and country.

Revenue Recognition

The Company recognizes revenue on product sales in the period in which the Company satisfies its performance obligation and control of the product is transferred to the customer. The Company’s sales arrangements with customers are predominately short term in nature and generally provide for transfer of control at the time of shipment as this is the point at which title and risk of loss of the product transfers to the customer. At the end of each period, for those shipments where title to the products and the risk of loss and rewards of ownership do not transfer until the product has been received by the customer, the Company adjusts revenues and cost of sales for the delay between the time that the products are shipped and when they are received by the customer. The amount of revenue recorded reflects the consideration to which the Company expects to be entitled in exchange for goods and may include adjustments for customer allowances, rebates and price adjustments. The Company’s distribution channels are primarily through direct sales and independent third-party distributors.

The Company has elected the practical expedient under Accounting Standards Codification ("ASC") 340-40-25-4 to expense commissions when incurred as the amortization period of the commission asset the Company would have otherwise recognized is less than one year.

Revenue and Billing

The Company generally accepts orders from customers through receipt of purchase orders or electronic data interchange based on written sales agreements and purchasing contracts. Contract pricing and selling agreement terms are based on market factors, costs, and competition. Pricing is often negotiated as an adjustment (premium or discount) from the Company’s published price lists. The customer is invoiced when the Company’s products are shipped to them in accordance with the terms of the sales agreement. As the Company’s standard payment terms are less than one year, the Company elected the practical expedient under ASC 606-10-32-18 to not assess whether a contract has a significant financing component. The Company also elected the practical expedient provided in ASC 606-10-25-18B to treat all product shipping and handling activities as fulfillment activities, and therefore recognize the gross revenue associated with the contract, inclusive of any shipping and handling revenue.

Ship and Debit Program

Some of the terms of the Company’s sales agreements and normal business conditions provide customers (distributors) the ability to receive price adjustments on products previously shipped and invoiced. This practice is common in the industry and is referred to as a “ship and debit” program. This program allows the distributors to debit the Company for the difference between the distributors’ contracted price and a lower price for specific transactions. Under certain circumstances (usually in a competitive situation or large volume opportunity), a distributor will request authorization for pricing allowances to reduce its price. When the Company approves such a reduction, the distributor is authorized to “debit” its account for the difference between the contracted price and the lower approved price. The Company establishes reserves for this program based on historical activity, distributor inventory levels and actual authorizations for the debit and recognizes these debits as a reduction of revenue.

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Return to Stock

The Company has a return to stock policy whereby certain customers, with prior authorization from the Company's management, can return previously purchased goods for full or partial credit. The Company establishes an estimated allowance for these returns based on historical activity. Sales revenue and cost of sales are reduced to anticipate estimated returns.

Volume Rebates

The Company offers volume-based sales incentives to certain customers to encourage greater product sales. If customers achieve their specific quarterly or annual sales targets, they are entitled to rebates. The Company estimates the projected amount of rebates that will be achieved by the customer and recognizes this estimated cost as a reduction to revenue as products are sold.

Cash, Cash Equivalents, and Restricted Cash

The following table provides a reconciliation of cash, cash equivalents, and restricted cash at September 28, 2024 and December 30, 2023 reported within the Condensed Consolidated Balance Sheets that sum to the total of the same such amounts shown in the Condensed Consolidated Statement of Cash Flows.


(in thousands)	September 28, 2024		December 30, 2023
Cash and cash equivalents	$	629,670	$	555,513

Restricted cash included in other long-term assets	1,623		1,610
Total cash, cash equivalents, and restricted cash	$	631,293	$	557,123

Recently Adopted Accounting Standards

In March 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Updates ("ASU") ASU No. 2023-01, "Leases (Topic 842): Common Control Arrangements." The standard requires that leasehold improvements associated with common control leases be: 1) Amortized by the lessee over the useful life of the leasehold improvements to the common control group (regardless of the lease term) as long as the lessee controls the use of the underlying asset (the leased asset) through a lease. However, if the lessor obtained the right to control the use of the underlying asset through a lease with another entity not within the same common control group, the amortization period may not exceed the amortization period of the common control group. 2) Accounted for as a transfer between entities under common control through an adjustment to equity (or net assets for not-for-profit entities) if, and when, the lessee no longer controls the use of the underlying asset. Additionally, those leasehold improvements are subject to the impairment guidance in Topic 360, Property, Plant, and Equipment. This standard is effective for fiscal years beginning after December 15, 2023 including interim periods within those fiscal years. The adoption of ASU 2023-01 did not have a material impact on the Company's Condensed Consolidated Financial Statements.

Recently Issued Accounting Standards

In March 2024, the Securities and Exchange Commission ("SEC") issued a final rule that requires registrants to provide climate disclosures in annual reports and registration statements. The climate-related final rule requires disclosures in the footnotes to the financial statements, including: 1) specified financial statement effects of severe weather events and other natural conditions, 2) certain carbon offsets and renewable energy credits or certificates if used as a material component of a registrant's plans to achieve its disclosed climate-related targets or goals, 3) material impacts on financial estimates and assumptions in the financial statements if they would materially impacted by risks and uncertainties associated with severe weather events and other natural conditions, previously disclosed climate-related targets, and transition plans. The financial statement disclosure requirements are effective beginning with annual reports for the fiscal year beginning in calendar year 2025 for the Company as a large accelerated filer. These disclosures will be subject to existing audit requirement for financial statements. On April 4, 2024, the SEC chose to stay its climate disclosure rules pending judicial review. The adoption of this rule will increase the Company's disclosures in its Consolidated Financial Statements. The Company is currently evaluating and is in the process of performing its initial assessment of the potential impact on its Condensed Consolidated Financial Statements.

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In December 2023, the FASB issued ASU No. 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures." The amendments in this update provide more transparency about income tax information through improvements to the income tax disclosure primarily related to the income tax rate reconciliation and income taxes paid information. These requirements include: (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. The other amendments in this update improve the effectiveness and comparability of disclosures by (3) adding disclosures of pretax income (or loss) and income tax expense (or benefit), and (4) removing disclosures that are no longer considered cost beneficial or relevant. The guidance is effective for fiscal years beginning after December 15, 2024 with early adoption permitted. The adoption of this guidance will modify the Company's disclosures in its Condensed Consolidated Financial Statements.

In November 2023, the FASB issued ASU No. 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures." The amendments in this update require additional detailed and enhanced information about reportable segments' expense, including significant segment expenses and other segment items that bridge segment revenue, significant expenses to segment profit or loss. The ASU also requires disclosure of the title and position of the Chief Operating Decision Maker (“CODM”) on an annual basis as well as an explanation of how the CODM uses the reported measures and other disclosures. The amendments in this update do not change how a public entity identifies its operating segments, aggregates those operating segments, or applies the quantitative thresholds to determine its reportable segments. The guidance is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The adoption of this guidance will modify the Company's disclosures in its Condensed Consolidated Financial Statements.

In October 2023, the FASB issued ASU No. 2023-06, "Disclosure Improvements." The amendments in this update represent changes to clarify or improve the disclosure or presentation requirements of a variety of Topics in the ASC. The Company may be affected by one or more of those amendments. The amendments in this ASU should be applied prospectively and will not be effective until June 30, 2027. The Company is currently evaluating the potential effects of these amendments on its Condensed Consolidated Financial Statements.

2. Acquisitions

The Company accounts for acquisitions using the acquisition method in accordance with ASC 805, “Business Combinations,” in which assets acquired and liabilities assumed are recorded at fair value as of the date of acquisition. The operating results of the acquired business are included in the Company’s Condensed Consolidated Financial Statements from the date of the acquisition.

Dortmund Fab

On June 28, 2023, the Company entered into a definitive purchase agreement to acquire a 200mm wafer fab located in Dortmund, Germany (“Dortmund Fab”) from Elmos Semiconductor SE. The acquisition of the Dortmund Fab is expected to close in early fiscal year 2025. The total purchase price for the Dortmund Fab is approximately 93 million Euro, of which a 37.2 million Euro down payment (approximately $40.5 million) recorded in Prepaid expenses and other current assets in the Condensed Consolidated Balance Sheets. The down payment was paid in the third quarter of 2023 after regulatory approvals, and approximately 56 million Euro will be paid at closing. The transaction is not expected to have a material impact on the Company’s fiscal year 2024 financial results and will be reported in the Electronics-Semiconductor business within the Company’s Electronics segment.

Western Automation

On February 3, 2023, the Company completed the acquisition of Western Automation Research and Development Limited (“Western Automation”) for approximately $162 million in cash. Headquartered in Galway, Ireland, Western Automation is a designer and manufacturer of electrical shock protection devices used across a broad range of high-growth end markets, including e-Mobility off-board charging infrastructure, industrial safety and renewables. At the time the Company and Western Automation entered into the definitive agreement, Western Automation had annualized sales of approximately $25 million. The business is reported within the Company’s Industrial segment.

The acquisition was funded with cash on hand. The total purchase consideration of $158.3 million, net of cash acquired, has been allocated to assets acquired and liabilities assumed, as of the completion of the acquisition, based on estimated fair values.

The following table summarizes the final purchase price allocation of the fair value of assets acquired and liabilities assumed in the Western Automation acquisition:

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(in thousands)	Purchase Price Allocation
Total purchase consideration:
Cash, net of cash acquired	$	158,260
Allocation of consideration to assets acquired and liabilities assumed:
Trade receivables	3,359
Inventories	3,678
Other current assets	718
Property, plant, and equipment	1,328
Intangible assets	68,000
Goodwill	93,937
Other long-term assets	573
Current liabilities	(4,335)

Other long-term liabilities	(8,998)
	$	158,260

All Western Automation assets and liabilities were recorded in the Industrial segment and are primarily reflected in the Europe geographic area. The goodwill resulting from this acquisition consists largely of the Company’s expected future product sales and synergies from combining Western Automation’s products and technology with the Company’s existing Industrial products portfolio. Goodwill resulting from the Western Automation acquisition is not expected to be deductible for tax purposes.

During the nine months ended September 30, 2023, the Company incurred approximately $1.2 million of legal and professional fees related to the Western Automation acquisition recognized as Selling, general, and administrative expenses in the Condensed Consolidated Statement of Net Income. These costs were reflected as other non-segment costs.

Pro Forma Results

The following table summarizes, on an unaudited pro forma basis, the combined results of operations of the Company and Western Automation as though the acquisition had occurred as of January 2, 2022. The pro forma amounts presented are not necessarily indicative of either the actual consolidated results had the Western Automation acquisition occurred as of January 2, 2022, or of future consolidated operating results.


(in thousands, except per share amounts)	Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Net sales	$	607,071	$	1,830,736
Income before income taxes	75,071		271,165
Net income	57,591		217,930
Net income per share — basic	2.31		8.77
Net income per share — diluted	2.29		8.68

Pro forma results presented above primarily reflect the following adjustments:


(in thousands)	Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Amortization (a)	$	—	$	(479)
Transaction costs (b)	(224)		1,203
Income tax benefit (expense) of above items	28		(91)

(a) The amortization adjustment for the nine months ended September 30, 2023 primarily reflects incremental amortization resulting from the measurement of intangibles at their fair values.

(b) The transaction cost adjustments reflect the reversal of certain legal and professional fees from the three and nine months ended September 30, 2023.

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3. Inventories

The components of inventories at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Raw materials	$	202,119	$	201,984
Work in process	137,713		137,688
Finished goods	178,570		195,886
Inventory reserves	(64,621)		(60,951)
Total	$	453,781	$	474,607

4. Property, Plant, and Equipment

The components of net property, plant, and equipment at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Land and land improvements	$	18,442	$	22,212
Building and building improvements	200,856		202,764
Machinery and equipment	896,045		859,060

Accumulated depreciation	(633,751)		(590,883)
Total	$	481,592	$	493,153

The Company recorded depreciation expense of $17.3 million and $17.9 million for the three months ended September 28, 2024 and September 30, 2023, respectively, and $51.0 million and $53.5 million for the nine months ended September 28, 2024 and September 30, 2023, respectively.

5. Goodwill and Other Intangible Assets

Changes in the carrying value of goodwill by segment for the nine months ended September 28, 2024 are as follows:


(in thousands)	Electronics		Transportation		Industrial		Total
Net goodwill as of December 30, 2023
Gross goodwill as of December 30, 2023	$	936,505	$	237,115	$	179,117	$	1,352,737
Accumulated impairment losses as of December 30, 2023	—		(34,004)		(8,735)		(42,739)
Total	936,505		203,111		170,382		1,309,998
Changes during 2024:


Foreign currency translation adjustments	3,581		1,881		2,288		7,750
Net goodwill as of September 28, 2024
Gross goodwill as of September 28, 2024	940,086		239,777		181,237		1,361,100
Accumulated impairment losses as of September 28, 2024	—		(34,785)		(8,567)		(43,352)
Total	$	940,086	$	204,992	$	172,670	$	1,317,748

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The components of other intangible assets as of September 28, 2024 and December 30, 2023 are as follows:


	As of September 28, 2024
(in thousands)	Gross Carrying Value		Accumulated Amortization		Net Book Value
Land use rights	$	16,731	$	2,989	$	13,742
Patents, licenses, and software	277,011		181,471		95,540
Distribution network	42,106		42,106		—
Customer relationships, trademarks, and tradenames	691,519		239,807		451,712

Total	$	1,027,367	$	466,373	$	560,994


	December 30, 2023
(in thousands)	Gross Carrying Value		Accumulated Amortization		Net Book Value
Land use rights	$	17,621	$	2,786	$	14,835
Patents, licenses, and software	275,337		163,799		111,538
Distribution network	43,210		43,210		—
Customer relationships, trademarks, and tradenames	689,244		209,481		479,763
Total	$	1,025,412	$	419,276	$	606,136

During the three months ended September 28, 2024 and September 30, 2023, the Company recorded amortization expense of $15.9 million and $16.0 million, respectively. During the nine months ended September 28, 2024 and September 30, 2023, the Company recorded amortization expense of $47.4 million and $49.8 million, respectively.

Estimated annual amortization expense related to intangible assets with definite lives as of September 28, 2024 is as follows:


(in thousands)	Amount
Remainder of 2024	$	16,000
2025	63,795
2026	52,706
2027	50,597
2028	49,970
2029 and thereafter	327,926
Total	$	560,994

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6. Accrued Liabilities

The components of accrued liabilities as of September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Employee-related liabilities	$	71,614	$	72,635
Current lease liability	10,162		12,110
Other non-income taxes	7,597		7,855
Interest	5,311		6,387
Professional services	4,938		5,282
Other customer reserves	4,815		5,998
Restructuring liability	4,461		2,141
Current hedge liability	4,307		—
Deferred revenue	1,614		2,198
Current benefit liability	1,482		1,482
Other	36,471		33,126
Total	$	152,772	$	149,214

Employee-related liabilities consist primarily of payroll, sales commissions, bonus, employee benefit accruals and workers’ compensation. Bonus accruals include amounts earned pursuant to the Company’s primary employee incentive compensation plans. Other accrued liabilities include miscellaneous operating accruals and other customer-related liabilities.

7. Restructuring, Impairment, and Other Charges

The Company recorded restructuring, impairment, and other charges for the three and nine months ended September 28, 2024 and September 30, 2023 as follows:


	Three Months Ended September 28, 2024								Nine Months Ended September 28, 2024
(in thousands)	Electronics		Transportation		Industrial		Total		Electronics		Transportation		Industrial		Total
Employee terminations	$	1,140	$	404	$	1	$	1,545	$	6,245	$	1,995	$	417	$	8,657
Other restructuring charges	95		187		13		295		234		474		31		739
Total restructuring charges	1,235		591		14		1,840		6,479		2,469		448		9,396
Impairment	—		—		—		—		—		933		—		933

Total	$	1,235	$	591	$	14	$	1,840	$	6,479	$	3,402	$	448	$	10,329


	Three Months Ended September 30, 2023								Nine Months Ended September 30, 2023
(in thousands)	Electronics		Transportation		Industrial		Total		Electronics		Transportation		Industrial		Total
Employee terminations	$	1,174	$	1,665	$	293	$	3,132	$	2,833	$	2,598	$	887	$	6,318
Other restructuring charges	64		138		364		566		321		822		1,018		2,161
Total restructuring charges	1,238		1,803		657		3,698		3,154		3,420		1,905		8,479
Impairment	—		—		818		818		—		3,870		872		4,742

Total	$	1,238	$	1,803	$	1,475	$	4,516	$	3,154	$	7,290	$	2,777	$	13,221

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2024

For the three and nine months ended September 28, 2024, the Company recorded total restructuring charges of $1.8 million and $9.4 million, respectively, primarily for employee termination costs. These charges primarily related to the reorganization of certain manufacturing, selling and administrative functions within the semiconductor business in the Electronics segment and the reorganization of certain selling and administrative functions within the commercial vehicle business in the Transportation segment. In addition, during the first quarter of 2024, the Company recognized a $0.9 million impairment charge related to certain machinery and equipment in the commercial vehicle business within the Transportation segment.

2023

For the three and nine months ended September 30, 2023, the Company recorded total restructuring charges of $3.7 million and $8.5 million, respectively, primarily for employee termination costs. These charges primarily related to the reorganization of certain manufacturing, selling and administrative functions within the Transportation segment’s commercial vehicle business, and the reorganization of certain selling and administrative functions within the Electronics segment due to the C&K Switches acquisition. During the third quarter of 2023, the Company recognized a $0.8 million impairment charge substantially related to certain patents in a business within the Industrial segment. In addition, during the second quarter of 2023, the Company recognized a $3.9 million impairment charge related to the land and building of a property in the commercial vehicle business within the Transportation segment that the Company made the decision to donate.

The restructuring reserves as of September 28, 2024 and December 30, 2023 are $4.5 million and $2.1 million, respectively. The restructuring liability is included within Accrued liabilities in the Condensed Consolidated Balance Sheets. The Company anticipates the remaining payments associated with employee terminations will primarily be completed in the first quarter of fiscal year 2025.

8. Debt

The carrying amounts of debt at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Revolving credit facility	$	100,000	$	100,000
Term loan	285,000		288,750

Euro Senior Notes, Series B due 2028	106,106		105,246

U.S. Senior Notes, Series B due 2027	100,000		100,000
U.S. Senior Notes, Series A due 2025	50,000		50,000
U.S. Senior Notes, Series B due 2030	125,000		125,000
U.S. Senior Notes, due 2032	100,000		100,000
Other	4,670		6,709
Unamortized debt issuance costs	(3,028)		(3,770)
Total debt	867,748		871,935
Less: Current maturities	(67,799)		(14,020)
Total long-term debt	$	799,949	$	857,915

Revolving Credit Facility and Term Loan

On June 30, 2022, the Company amended and restated its Credit Agreement, dated as of April 3, 2020 (the “Credit Agreement”) to effect certain changes, including, among other changes: (i) adding a $300 million unsecured term loan credit facility; (ii) making certain financial and non-financial covenants less restrictive on the Company and its subsidiaries; (iii) replacing LIBOR-based interest rate benchmarks and modifying performance-based interest rate margins; and (iv) extending the maturity date to June 30, 2027 (the “Maturity Date”). Pursuant to the Credit Agreement, the Company may, from time to time, increase the size of the revolving credit facility or enter into one or more tranches of term loans in minimum increments of $25 million if there is no event of default and the Company is in compliance with certain financial covenants.

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Loans made under the available credit facility pursuant to the Credit Agreement ("the Credit Facility") bear interest at the Company’s option, at either Secured Overnight Financing Rate ("SOFR"), fixed for interest periods of one, two, three or six-month periods, plus 1.00% to 1.75%, plus a SOFR adjustment of 0.10% or at the bank’s Base Rate, as defined in the Credit Agreement, plus 0% to 0.75%, based upon the Company’s Consolidated Leverage Ratio, as defined in the Credit Agreement. The Company is also required to pay commitment fees on unused portions of the Credit Facility ranging from 0.10% to 0.175%, based on the Consolidated Leverage Ratio, as defined in the Credit Agreement. The Credit Agreement includes representations, covenants and events of default that are customary for financing transactions of this nature.

Under the Credit Agreement, revolving loans may be borrowed, repaid and reborrowed until the Maturity Date, at which time all amounts borrowed must be repaid. The Company borrowed $300.0 million under a term loan on June 30, 2022. The principal balance of the term loans must be repaid in quarterly installments on the last day of each calendar quarter in the amount of $1.9 million commencing September 30, 2022, through June 30, 2024, and in the amount of $3.8 million commencing September 30, 2024, through March 31, 2027, with the remaining outstanding principal balance payable in full on the Maturity Date. Accrued interest on the loans is payable in arrears on each interest payment date applicable thereto and at such other times as may be specified in the Credit Agreement. Subject to certain conditions, (i) the Company may terminate or reduce the Aggregate Revolving Commitments, as defined in the Credit Agreement, in whole or in part, and (ii) the Company may prepay the revolving loans or the term loans at any time, without premium or penalty. During the nine months ended September 28, 2024, the Company made payments of $3.8 million on its term loan. The revolving loan and term loan balance under the Credit Facility was $100.0 million and $285.0 million, respectively, as of September 28, 2024.

As of September 28, 2024, the effective interest rate on unhedged portion of the outstanding borrowings under the credit facility was 6.60%, and 4.13% on the hedged portion.

As of September 28, 2024, the Company had $0.1 million outstanding letters of credit under the Credit Facility and had $599.9 million of borrowing capacity available under the revolving credit facility. As of September 28, 2024, the Company was in compliance with all covenants under the Credit Agreement.

Senior Notes

On December 8, 2016, the Company entered into a Note Purchase Agreement, pursuant to which the Company issued and sold €212 million aggregate principal amount of senior notes in two series. The funding date for the Euro denominated senior notes occurred on December 8, 2016 for €117 million in aggregate amount of 1.14% Senior Notes, Series A, due December 8, 2023 (“Euro Senior Notes, Series A due 2023”), and €95 million in aggregate amount of 1.83% Senior Notes, Series B due December 8, 2028 (“Euro Senior Notes, Series B due 2028”) (together, the “Euro Senior Notes”). During the fourth quarter of 2023, the Company paid off €117 million of Euro Senior Notes, Series A due on December 8, 2023. Interest on the Euro Senior Notes due 2028 is payable semiannually on June 8 and December 8, commencing June 8, 2017.

On December 8, 2016, the Company entered into a Note Purchase Agreement, pursuant to which the Company issued and sold $125 million aggregate principal amount of senior notes in two series. On February 15, 2017, $25 million in aggregate principal amount of 3.03% Senior Notes, Series A, due February 15, 2022 (“U.S. Senior Notes, Series A due 2022”), and $100 million in aggregate principal amount of 3.74% Senior Notes, Series B, due February 15, 2027 (“U.S. Senior Notes, Series B due 2027”) were funded. During the first quarter of 2022, the Company paid off $25 million of U.S. Senior Notes, Series A due on February 15, 2022. Interest on the U.S. Senior Notes due 2027 is payable semiannually on February 15 and August 15, commencing August 15, 2017.

On November 15, 2017, the Company entered into a Note Purchase Agreement pursuant to which the Company issued and sold $175 million in aggregate principal amount of senior notes in two series. On January 16, 2018, $50 million aggregate principal amount of 3.48% Senior Notes, Series A, due February 15, 2025 (“U.S. Senior Notes, Series A due 2025”) and $125 million in aggregate principal amount of 3.78% Senior Notes, Series B, due February 15, 2030 (“U.S. Senior Notes, Series B due 2030”) (together, the “U.S. Senior Notes due 2025 and 2030”) were funded. Interest on the U.S. Senior Notes due 2025 and 2030 is payable semiannually on February 15 and August 15, commencing on August 15, 2018.

On May 18, 2022, the above note purchase agreements were amended to, among other things, update certain terms, including financial covenants to be consistent with the terms of the restated Credit Agreement and the 2022 Purchase Agreement, as defined below.

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On May 18, 2022, the Company entered into a Note Purchase Agreement (“2022 Purchase Agreement”) pursuant to which the Company issued and funded on July 18, 2022 $100 million in aggregate principal amount of 4.33% Senior Notes, due June 30, 2032 (“U.S. Senior Notes, due 2032”) (together with the U.S. Senior Notes due 2025 and 2030, the Euro Senior Notes and the U.S. Senior Notes due 2022 and 2027, the “Senior Notes”). Interest on the U.S. Senior Notes due 2032 is payable semiannually on June 30 and December 30, commencing on December 30, 2022.

The Senior Notes have not been registered under the Securities Act, or applicable state securities laws. The Senior Notes are general unsecured senior obligations and rank equal in right of payment with all existing and future unsecured unsubordinated indebtedness of the Company.

The Senior Notes are subject to certain customary covenants, including limitations on the Company’s ability, with certain exceptions, to engage in mergers, consolidations, asset sales and transactions with affiliates, to engage in any business that would substantially change the general business of the Company, and to incur liens. In addition, the Company is required to satisfy certain financial covenants and tests relating to, among other matters, interest coverage and leverage. As of September 28, 2024, the Company was in compliance with all covenants under the Senior Notes.

The Company may redeem the Senior Notes upon the satisfaction of certain conditions and the payment of a make-whole amount to note holders and are required to offer to repurchase the Senior Notes at par following certain events, including a change of control.

Interest paid on all Company debt was $10.5 million and $11.9 million for the three months ended September 28, 2024 and September 30, 2023, respectively, and $30.1 million and $33.2 million for the nine months ended September 28, 2024 and September 30, 2023, respectively.

9. Fair Value of Assets and Liabilities

For assets and liabilities measured at fair value on a recurring and nonrecurring basis, a three-level hierarchy of measurements based upon observable and unobservable inputs is used to arrive at fair value. Observable inputs are developed based on market data obtained from independent sources, while unobservable inputs reflect the Company’s assumptions about valuation based on the best information available in the circumstances. Depending on the inputs, the Company classifies each fair value measurement as follows:

Level 1—Valuations based on unadjusted quoted prices for identical assets or liabilities in active markets;

Level 2—Valuations based upon quoted prices for similar instruments, prices for identical or similar instruments in markets that are not active, or model-derived valuations, all of whose significant inputs are observable, and

Level 3—Valuations based upon one or more significant unobservable inputs

There were no transfers in or out of Level 1, Level 2 and Level 3 during the period.

Following is a description of the valuation methodologies used for instruments measured at fair value and their classification in the valuation hierarchy.

Cash Equivalents

Cash equivalents primarily consist of money market funds, certificates of deposit, and short-term time deposits, which are held with institutions with sound credit ratings and are highly liquid. The Company classified cash equivalents as Level 1 and are valued at cost which approximates fair value.

Investments in Equity Securities

Investments in equity securities listed on a national market or exchange are valued at the last sales price and classified within Level 1 of the valuation hierarchy and recorded in Investments and Other long-term assets.

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Derivatives Designated as Hedging Instruments

For derivatives that will be accounted for as hedging instruments, the Company formally designates and documents, at inception, the financial instrument as a hedge of a specific underlying exposure, the risk management objective and the strategy for undertaking the hedge transaction. In addition, the Company formally assesses, both at the inception and at least quarterly thereafter, whether the financial instruments used in hedging transactions are effective at offsetting changes in either the fair values or cash flows of the related underlying exposures. For highly effective cash flow hedges, ASC 815 requires the entire change in fair value of the hedging instrument included in the assessment of hedge effectiveness to be recorded in other comprehensive income. No components of the Company's hedging instruments were excluded from the assessment of hedge effectiveness.

Zero Cost Collar Agreement

In July 2024, the Company implemented a hedging program to manage foreign currency risk exposure related to fluctuations between the U.S. dollar and Mexican peso. These foreign currency zero cost collars are designated as cash flow hedges for a portion of our Mexican peso-denominated manufacturing expenses, predominantly salary expenses, vendor payments, and utility expenses. The July 2024 collars mature in August 2025 at a weighted-average ceiling of 19.435 and a weighted-average floor of 18.000. The August 2024 collars mature in September 2025 at a weighted-average ceiling of 21.000 and a weighted-average floor of 19.655. If the spot rate is between the weighted-average ceiling and floor rates on the date of maturity, then the Company would not owe or receive any payments under these collars. The Company plans to continue executing zero cost collars with 14-month rolling maturities as an ongoing strategy to hedge peso-denominated manufacturing expenses.

The fair value of the collars was determined using an independent third-party valuation model. Pursuant to this model, changes in fair value of derivatives that are designated as cash flow hedges are deferred in accumulated other comprehensive loss until the underlying transactions are recognized in earnings. For the three months ended September 28, 2024, the Company recorded a pre-tax unrealized loss on the collars of $4.0 million. The Company estimates that approximately $4.2 million of pre-tax losses currently recorded in accumulated other comprehensive loss will be recognized in earnings over the next 12 months. The amounts included in accumulated other comprehensive income will be reclassified to earnings should the hedge no longer be considered effective. No amount of ineffectiveness was included in net income for the three months ended September 28, 2024. The Company will continue to assess the effectiveness of the hedge on an ongoing basis. The primary inputs into the valuation of the collars are interest yield curves, interest rate volatilities, foreign exchange rates, foreign exchange volatilities, credit risk, credit spreads and other market information. The collars are classified within Level 2 of the fair value hierarchy, since all significant inputs are corroborated by market observable data.

Interest Rate Swap

On May 12, 2022, the Company entered into an interest rate swap agreement to manage interest rate risk exposure, effectively converting the interest rate on the Company's SOFR based floating-rate loans to a fixed-rate. The interest rate swap, with a notional value of $200 million, was designated as a cash flow hedge against the variability of cash flows associated with the Company's SOFR based loans scheduled to mature on June 30, 2027. The fair value of the interest rate swap was valued using an independent third-party valuation model. Pursuant to this model, changes in fair value of derivatives that are designated as cash flow hedges are deferred in accumulated other comprehensive loss until the underlying transactions are recognized in earnings. For the three and nine months ended September 28, 2024, the Company recorded a pre-tax unrealized loss on the interest rate swap of $5.9 million and $3.3 million, respectively. The Company estimates that approximately $1.8 million of pre-tax gain currently recorded in accumulated other comprehensive loss will be recognized in earnings over the next 12 months. The primary inputs into the valuation of the interest rate swap are interest yield curves, interest rate volatility, credit risk, credit spreads and other market information. The interest rate swap is classified within Level 2 of the fair value hierarchy, since all significant inputs are corroborated by market observable data.

The use of derivatives creates exposure to credit risk relating to potential losses that could be recognized in the event that the counterparties to these instruments fail to perform their obligations under the contracts. The Company seeks to minimize this risk by limiting its counterparties to major financial institutions with acceptable credit ratings and monitoring the total value of positions with individual counterparties. In the event of a default by one of its counterparties, the Company may not receive payments provided for under the terms of its derivatives.

Derivatives Not Designated as Hedging Instruments

On July 14, 2022, the Company entered into a foreign currency exchange forward contract to mitigate the currency fluctuation risk between the Euro and U.S. dollar on its Euro denominated Senior Notes, Series A due 2023. The notional value of the forward contract at July 14, 2022 was €117.0 million and expired on December 7, 2023 with the final settlement value of $6.3 million which the Company used to convert USD to Euro to pay down the €117.0 million of Euro Senior Notes, Series A due 2023. The foreign currency contract was not designated as a hedge instrument and was marked to market on a monthly basis. As a result, changes in fair value during 2023 were reported in Foreign exchange gain in the Condensed Consolidated Statements of Net Income. The fair value of the foreign currency forward contract was valued using market exchange rates by a third party and classified as a Level 2 input under the fair value hierarchy.

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The Company does not enter into derivative financial instruments for trading purposes.

As of September 28, 2024 and December 30, 2023, the fair values of the Company's derivative financial instrument and their classifications on the Condensed Consolidated Balance Sheets were as follows:


(in thousands)	Condensed Consolidated Balance Sheet Classification	September 28, 2024		December 30, 2023
Derivatives designated as hedging instruments
Interest rate swap agreement:
Designated as cash flow hedge	Prepaid expenses and other current assets	$	1,792	$	3,712
	Other long-term assets	$	713	$	2,140
Zero cost collar agreement:
Designated as cash flow hedge	Prepaid expenses and other current assets	$	60	$	—
	Accrued liabilities	$	4,307	$	—
	Other long-term liabilities	$	1	$	—

The pre-tax (gains) losses recognized on derivative financial instruments in the Condensed Consolidated Statements of Net Income for the three and nine months ended September 28, 2024 and September 30, 2023 were as follows:


		Three Months Ended				Nine Months Ended
(in thousands)	Classification of (Gains) Losses Recognized in the Condensed Consolidated Statements of Net Income	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Derivatives designated as cash flow hedges
Interest rate swap agreement	Interest expense	$	(1,282)	$	(1,252)	$	(3,850)	$	(3,246)
Zero cost collar agreement	Cost of sales	$	409	$	—	$	409	$	—
Derivatives not designated as hedging instruments
Foreign exchange forward contract	Foreign exchange loss	$	—	$	4,310	$	—	$	3,226

The pre-tax losses (gains) recognized on derivative financial instruments in the Condensed Consolidated Statements of Comprehensive Income for the three and nine months ended September 28, 2024 and September 30, 2023 was as follows:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Derivatives designated as cash flow hedges
Interest rate swap agreement	$	5,857	$	(2,034)	$	3,346	$	(2,817)
Zero cost collar agreement	$	4,003	$	—	$	4,003	$	—

Mutual Funds

The Company has a non-qualified Supplemental Retirement and Savings Plan which provides additional retirement benefits for certain management employees and named executive officers by allowing participants to defer a portion of their annual compensation. The Company maintains accounts for participants through which participants make investment elections. The marketable securities are classified as Level 1 under the fair value hierarchy as they are maintained in mutual funds with readily determinable fair value and recorded in Other long-term assets in the Condensed Consolidated Balance Sheets.

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There were no changes during the quarter ended September 28, 2024 to the Company’s valuation techniques used to measure asset and liability fair values on a recurring basis. As of September 28, 2024 and December 30, 2023, the Company did not hold any non-financial assets or liabilities that are required to be measured at fair value on a recurring basis.

The following table presents assets measured at fair value by classification within the fair value hierarchy as of September 28, 2024:


	Fair Value Measurements Using
(in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents	$	552,735	$	—	$	—	$	552,735
Investments in equity securities	12,888		—		—		12,888
Mutual funds	23,479		—		—		23,479
Total	$	589,102	$	—	$	—	$	589,102

The following table presents assets measured at fair value by classification within the fair value hierarchy as of December 30, 2023:


	Fair Value Measurements Using
(in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents	$	415,788	$	—	$	—	$	415,788
Investments in equity securities	10,832		—		—		10,832
Mutual funds	20,148		—		—		20,148
Total	$	446,768	$	—	$	—	$	446,768

In addition to the methods and assumptions used for the financial instruments recorded at fair value as discussed above, the following methods and assumptions are used to estimate the fair value of other financial instruments that are not marked to market on a recurring basis. The Company’s other financial instruments include cash and cash equivalents, short-term investments, accounts receivable and its long-term debt. Due to their short-term maturity, the carrying amounts of cash and cash equivalents, short-term investments and accounts receivable approximate their fair values. The Company’s revolving and term loan debt facilities' fair values approximate book value at September 28, 2024 and December 30, 2023, as the rates on these borrowings are variable in nature.

The carrying value and estimated fair values of the Company’s Euro Senior Notes, Series A and Series B and USD Senior Notes, Series A and Series B, as of September 28, 2024 and December 30, 2023 were as follows:


	September 28, 2024				December 30, 2023
(in thousands)	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value

Euro Senior Notes, Series B due 2028	$	106,106	$	99,141	$	105,246	$	96,532

USD Senior Notes, Series B due 2027	100,000		97,967		100,000		96,127
USD Senior Notes, Series A due 2025	50,000		49,735		50,000		49,070
USD Senior Notes, Series B due 2030	125,000		118,596		125,000		115,687
USD Senior Notes, due 2032	100,000		95,229		100,000		93,228

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10. Benefit Plans

The Company has Company-sponsored and mandatory defined benefit pension plans covering employees in the United Kingdom ("U.K."), Germany, the Philippines, China, Japan, Mexico, Italy and France. The amount of the retirement benefits provided under the plans is generally based on years of service and final average pay.

The Company recognizes interest cost, expected return on plan assets, and amortization of prior service, net within Other income, net in the Condensed Consolidated Statements of Net Income. The components of net periodic benefit cost for the three and nine months ended September 28, 2024 and September 30, 2023 were as follows:


	For the Three Months Ended				For the Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Components of net periodic benefit cost:
Service cost	$	753	$	700	$	2,318	$	2,087
Interest cost	961		961		2,931		2,850
Expected return on plan assets	(527)		(470)		(1,555)		(1,409)
Amortization of prior service and net actuarial loss	47		12		139		34
Net periodic benefit cost	$	1,234	$	1,203	$	3,833	$	3,562

The Company expects to make approximately $2.2 million of contributions to the plans and pay $2.1 million of benefits directly in 2024.

On October 4, 2024, the Company entered into a definitive agreement to purchase a group annuity contract, under which an insurance company will be required to pay pension payments to the Company’s United Kingdom pension plan to match required pension payments until a later buyout, at which point the insurance company will directly pay and administer the benefits to the plan's participants, or to their designated beneficiaries. The purchase of this group annuity contract will reduce the Company’s outstanding pension benefit obligation by approximately $23 million, representing approximately 31% of the total obligations of the Company’s qualified pension plans, and will be funded with pension plan assets and additional cash on hand. In connection with this transaction, the Company currently expects to record a one-time non-cash settlement charge in 2026 estimated between $6 million and $8 million, reflecting the accelerated recognition of a portion of unamortized actuarial losses in the plan. The actual settlement charge could differ from this estimate due to final data and plan wind-up expenses.

The Company also sponsors certain post-employment plans in foreign countries and other statutory benefit plans. The Company recorded expense of $0.6 million and $0.4 million for the three months ended September 28, 2024 and September 30, 2023, respectively, and $2.0 million and $1.1 million for the nine months ended September 28, 2024 and September 30, 2023, respectively, in Cost of sales and Other income, net within the Condensed Consolidated Statements of Net Income. The pre-tax (gains) losses amount recognized in other comprehensive income (loss) as components of net periodic benefit costs for these plans were $0.3 million and nominal for the three months ended September 28, 2024 and September 30, 2023, respectively, and $0.9 million and $(0.1) million for the nine months ended September 28, 2024 and September 30, 2023, respectively.

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11. Other Comprehensive Income (Loss)

Changes in other comprehensive income (loss) by component were as follows:


(in thousands)	Three Months Ended September 28, 2024						Three Months Ended September 30, 2023
	Pre-tax		Tax		Net of Tax		Pre-tax		Tax		Net of Tax
Defined benefit pension plan and other adjustments	$	205	$	(14)	$	191	$	(3)	$	—	$	(3)
Cash flow hedges	(9,860)		1,563		(8,297)		2,034		(488)		1,546
Foreign currency translation adjustments (a)	66,331		(1,832)		64,499		(4,301)		624		(3,677)
Total change in other comprehensive income (loss)	$	56,676	$	(283)	$	56,393	$	(2,270)	$	136	$	(2,134)

(in thousands)	Nine Months Ended September 28, 2024						Nine Months Ended September 30, 2023
	Pre-tax		Tax		Net of Tax		Pre-tax		Tax		Net of Tax
Defined benefit pension plan and other adjustments	$	901	$	(40)	$	861	$	(125)	$	(31)	$	(156)
Cash flow hedges	(7,349)		960		(6,389)		2,817		(676)		2,141
Foreign currency translation adjustments (a)	11,619		(1,056)		10,563		(6,098)		351		(5,747)
Total change in other comprehensive income (loss)	$	5,171	$	(136)	$	5,035	$	(3,406)	$	(356)	$	(3,762)

(a) The tax shown above within the foreign currency translation adjustments is the U.S. tax associated with the foreign currency translation adjustments of earnings of non-U.S. subsidiaries which have been previously taxed in the U.S. and are not permanently reinvested.

The following tables set forth the changes in accumulated other comprehensive income (loss) by component for the nine months ended September 28, 2024 and September 30, 2023:


(in thousands)	Defined benefit pension plan and other adjustments		Cash flow hedges		Foreign currency translation adjustment		Accumulated other comprehensive loss
Balance at December 30, 2023	$	(7,613)	$	4,448	$	(52,652)	$	(55,817)

Activity in the period	861		(6,389)		10,563		5,035
Balance at September 28, 2024	$	(6,752)	$	(1,941)	$	(42,089)	$	(50,782)


(in thousands)	Defined benefit pension plan and other adjustments		Cash flow hedges		Foreign currency translation adjustment		Accumulated other comprehensive loss
Balance at December 31, 2022	$	(2,193)	$	6,596	$	(100,167)	$	(95,764)

Activity in the period	(156)		2,141		(5,747)		(3,762)
Balance at September 30, 2023	$	(2,349)	$	8,737	$	(105,914)	$	(99,526)

Amounts reclassified from accumulated other comprehensive income (loss) to earnings for the three and nine months ended September 28, 2024 and September 30, 2023 were as follows:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Pension and postemployment plans:
Amortization of prior service and net actuarial loss (gain)	$	323	$	(11)	$	1,026	$	(33)

The Company recognizes the amortization of prior service costs in Other income, net within the Condensed Consolidated Statements of Net Income.

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12. Income Taxes

The effective tax rate for the three and nine months ended September 28, 2024 was 25.3% and 21.9%, respectively, compared to the effective tax rate for the three and nine months ended September 30, 2023 of 23.3% and 19.7%, respectively. The effective tax rates for 2024 are higher than the effective tax rates for the comparable 2023 periods primarily due to decreases in the income earned in lower tax jurisdictions in 2024 as compared to 2023.

The effective tax rates for the three months ended September 28, 2024 and September 30, 2023 are higher than the statutory tax rate primarily due to the impact of foreign exchange losses with no related tax benefit. Additionally, for the 2024 period, the effective tax rate was also higher due to the proportion of pre-tax income that is earned in higher tax jurisdictions. The effective tax rate for the nine months ended September 28, 2024 is higher than the statutory tax rate primarily due to the proportion of pre-tax income that is earned in higher tax jurisdictions, partially offset by previously unrecognized tax benefits recognized in the first quarter due to the lapse in the statute of limitations. The effective tax rate for the nine months ended September 30, 2023 is lower than the statutory tax rate primarily due to income earned in lower tax jurisdictions.

13. Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:


	Three Months Ended				Nine Months Ended
(in thousands, except per share amounts)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Numerator:
Net income as reported	$	58,058	$	57,788	$	151,976	$	216,604

Denominator:
Weighted average shares outstanding
Basic	24,796		24,893		24,822		24,838
Effect of dilutive securities	229		250		218		262
Diluted	25,025		25,143		25,040		25,100

Earnings Per Share:
Basic earnings per share	$	2.34	$	2.32	$	6.12	$	8.72
Diluted earnings per share	$	2.32	$	2.30	$	6.07	$	8.63

Potential shares of common stock relating to stock options and restricted share units are excluded from the earnings per share calculation because their effect would be anti-dilutive were 124,197 and 80,828 for the three months ended September 28, 2024 and September 30, 2023, respectively, and 136,635 and 106,156 for the nine months ended September 28, 2024 and September 30, 2023, respectively.

Share Repurchase Program

The Company’s Board of Directors authorized the repurchase of up to $300.0 million in the aggregate of shares of the Company’s common stock under a program for the period May 1, 2021 to April 30, 2024 ("2021 program"). On April 25, 2024, the Company's Board of Directors authorized a new three year program to repurchase up to $300.0 million in the aggregate of shares of the Company's stock for the period May 1, 2024 to April 30, 2027 ("2024 program") to replace the expired 2021 program. The Company did not repurchase shares of its common stock for the three months ended September 28, 2024. During the nine months ended September 28, 2024, the Company repurchased 179,311 shares of its common stock totaling $40.9 million, of which, $38.9 million was pursuant to the 2021 program and $2.0 million was pursuant to the 2024 program. The Company did not repurchase shares of its common stock for the three and nine months ended September 30, 2023.

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14. Segment Information

The Company and its subsidiaries design, manufacture and sell component, modules and subassemblies to empower the long-term structural themes of sustainability, connectivity and safety. The Company reports its operations by the following segments: Electronics, Transportation, and Industrial. An operating segment is defined as a component of an enterprise that engages in business activities from which it may earn revenues and incur expenses, and about which separate financial information is regularly evaluated by the Chief Operating Decision Maker (“CODM”) in deciding how to allocate resources. The CODM is the Company’s President and Chief Executive Officer (“CEO”). The CODM allocates resources to and assesses the performance of each operating segment using information about its revenue and operating income (loss) before interest and taxes, but does not evaluate the operating segments using discrete balance sheet information.

Sales, marketing, and research and development expenses are charged directly into each operating segment. Purchasing, logistics, customer service, finance, information technology, and human resources are shared functions that are allocated back to the three operating segments. The Company does not report inter-segment revenue because the operating segments do not record it. Certain expenses, determined by the CODM to be strategic in nature and not directly related to segments current results, are not allocated but identified as “Other”. Additionally, the Company does not allocate interest and other income, interest expense, or taxes to operating segments. These costs are not allocated to the segments, as management excludes such costs when assessing the performance of the segments. Although the CODM uses operating income (loss) to evaluate the segments, operating costs included in one segment may benefit other segments. Except as discussed above, the accounting policies for segment reporting are the same as for the Company as a whole.

•Electronics Segment: Consists of one of the broadest product offerings in the industry, including fuses and fuse accessories, positive temperature coefficient (“PTC”) resettable fuses, electromechanical switches and interconnect solutions, polymer electrostatic discharge (“ESD”) suppressors, varistors, reed switch based magnetic sensing, gas discharge tubes; semiconductor products such as discrete transient voltage suppressor (“TVS”) diodes, TVS diode arrays, protection and switching thyristors, silicon and silicon carbide metal-oxide-semiconductor field effect transistors (“MOSFETs”) and diodes; and insulated gate bipolar transistors (“IGBT”) technologies. The segment covers a broad range of end markets, including industrial motor drives and power conversion, automotive electronics, electric vehicle and related charging infrastructure, aerospace, power supplies, data centers and telecommunications, medical devices, alternative energy and energy storage, building and home automation, appliances, and mobile electronics.

•Transportation Segment: Consists of a wide range of circuit protection, power control and sensing technologies for global original equipment manufacturers (“OEMs”), Tier-one suppliers and parts and aftermarket distributors in passenger vehicle, heavy-duty truck and bus, off-road and recreational vehicles, material handling equipment, agricultural machinery, construction equipment and other commercial vehicle end markets. Passenger vehicle products are used in internal combustion engine, hybrid and electric vehicles including blade fuses, battery cable protectors, resettable fuses, high-current fuses, high-voltage fuses, and sensor products designed to monitor the occupant’s safety and environment as well as the vehicle’s powertrain. Commercial vehicle products include fuses, switches, circuit breakers, relays, and power distribution modules and units used in applications serving a number of end markets, including heavy-duty truck and bus, construction, agriculture, material handling and marine.

•Industrial Segment: Consists of industrial circuit protection (industrial fuses), protective and monitoring relays (protection relays, residual current devices and monitors, ground fault circuit interrupters, and arc fault detection devices), and industrial controls and sensors (contactors, transformers, and temperature sensors) for use in various applications such as renewable energy and energy storage systems, industrial safety, factory automation, electric vehicle infrastructure, HVAC systems, non-residential construction, MRO, and mining.

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Segment information is summarized as follows:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Net sales
Electronics	$	304,188	$	343,933	$	900,932	$	1,052,673
Transportation	171,381		177,019		510,711		515,708
Industrial	91,821		86,119		249,620		260,469
Total net sales	$	567,390	$	607,071	$	1,661,263	$	1,828,850

Depreciation and amortization
Electronics	$	20,045	$	19,623	$	59,656	59,219
Transportation	9,084		10,193		26,827		32,547
Industrial	4,041		4,093		11,960		11,517

Total depreciation and amortization	$	33,170	$	33,909	$	98,443	$	103,283

Operating income (loss)
Electronics	$	48,891	$	77,022	$	132,859	$	247,028
Transportation	23,485		9,694		54,925		26,015
Industrial	17,711		13,201		32,054		45,450
Other (a)	(2,266)		(6,272)		(11,559)		(22,154)
Total operating income	87,821		93,645		208,279		296,339
Interest expense	9,772		10,101		29,358		29,803
Foreign exchange loss	9,630		11,776		4,273		8,697
Other income, net	(9,297)		(3,527)		(19,916)		(11,810)
Income before income taxes	$	77,716	$	75,295	$	194,564	$	269,649

(a) Included in “Other” Operating income for the third quarter of 2024 includes $1.8 million ($9.4 million year-to-date) of restructuring charges primarily related to employee termination cost, and $1.0 million ($2.8 million year-to-date) of legal and professional fees and other integration expenses related to completed and contemplated acquisitions. During the first quarter of 2024, the Company recognized a $0.9 million impairment charge related to certain machinery and equipment in the commercial vehicle business within the Transportation segment. See Note 7, Restructuring, Impairment, and Other Charges, for further discussion. During the third quarter of 2024, the Company recorded a gain of $0.5 million related to the sale of a land use right within the Electronics segment. In addition, the Company recognized a gain of $1.0 million for the sale of two buildings within the Transportation segment during the first half of 2024.

Included in “Other” Operating income for the third quarter of 2023 was $3.7 million ($8.5 million year-to-date) of restructuring charges, primarily related to employee termination costs, and $1.8 million ($9.0 million year-to-date) of legal and professional fees and other integration expenses related to completed and contemplated acquisitions. During the third quarter of 2023, the Company recognized a $0.8 million impairment charge substantially related to certain patents in a business within the Industrial segment. In addition, during the second quarter of 2023, the Company recognized a $3.9 million impairment charge related to the land and building in the commercial vehicle business within the Transportation segment. See Note 7, Restructuring, Impairment, and Other Charges, for further discussion.

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The Company’s net sales by country were as follows, classified according to the country where the customer is located:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Net sales
United States	$	211,940	$	217,904	$	604,198	$	635,892
China	133,051		138,393		379,730		415,430
Other countries (a)	222,399		250,774		677,335		777,528
Total net sales	$	567,390	$	607,071	$	1,661,263	$	1,828,850

The Company’s long-lived assets represent net property, plant, and equipment, and are classified according to the country where the asset is located were as follows:


(in thousands)	September 28, 2024		December 30, 2023
Long-lived assets
United States	$	67,491	$	73,126
China	137,813		139,736
Mexico	93,057		102,218
Germany	56,578		47,217
Philippines	68,620		73,217
Other countries	58,033		57,639
Total long-lived assets	$	481,592	$	493,153

The Company’s additions to long-lived assets by country were as follows:


	Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023
Additions to long-lived assets
United States	$	9,591	$	7,407
China	10,681		22,558
Mexico	8,875		11,339
Germany	12,160		6,534
Philippines	3,025		5,245
Other countries	5,759		8,138
Total additions to long-lived assets	$	50,091	$	61,221

(a)Each country included in other countries is less than 10% of net sales.

15. Commitments and Contingencies

Off-Balance Sheet Arrangements

As of September 28, 2024, the Company did not have any off-balance sheet arrangements, as defined under SEC rules. Specifically, the Company was not liable for guarantees of indebtedness owed by third parties, the Company was not directly liable for the debt of any unconsolidated entity and the Company did not have any retained or contingent interest in assets. The Company does not participate in transactions that generate relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities.

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Product Warranty Liabilities

The company's policy is to accrue for warranty claims when a loss is both probable and estimable. Liabilities for warranty claims have historically not been material and in limited instances, customers may make claims for costs they incurred or other damages related to a claim.

The Company carries insurance for potential product liability claims at coverage levels based on the Company's prior claims experience. This coverage is subject to deductibles, and various terms and conditions. The Company cannot assure that the level of coverage will be sufficient to cover every possible claim that can arise in its businesses, now or in the future, or that such coverage always will be available should the Company, now or in the future, wish to extend, increase or otherwise adjust its insurance.

The Company has been notified by one of its customers of a product recall potentially due to certain fuses provided by Littelfuse and incorporated in such products. The Company is currently working with its customer to investigate the cause and level of responsibility for this recall. The Company has determined pursuant to ASC 450, "Contingencies", that a loss is reasonably possible. However, the Company continues to evaluate this matter and the ultimate costs of the recall and range of the potential loss cannot be determined at this time. Accordingly, no accrual has been made yet for this matter. Factors that will impact the amount of such losses include the per vehicle cost of fuse replacement, the determination of the relative liability among the customer, the Company, and any relevant third parties, as well as actual insurance recoveries.

Environmental Remediation Liabilities

The company's operations and facilities are subject to U.S. and non-U.S. laws and regulations governing the protection of the environment and its employees, including those governing air emissions, chemical usage, water discharges, the management and disposal of hazardous substances and wastes, and the cleanup of contaminated sites. The Company could incur significant costs, including cleanup costs, fines, civil or criminal sanctions, or third-party property damage or personal injury claims, in the event of violations or liabilities under these laws and regulations, or non-compliance with the environmental permits required at its facilities. Potentially significant expenditures could be required in order to comply with environmental laws that may be adopted or imposed in the future. The Company is, however, not aware of any threatened or pending material environmental investigations, lawsuits, or claims involving the Company or its operations.

Legal Proceedings

In the ordinary course of business, the Company may be involved in a number of claims and litigation matters. While it is not feasible to predict the outcome of these matters, based upon the Company's experience and current information known, the Company does not expect the outcome of these matters, either individually or in the aggregate, to have a material adverse effect on its results of operations, financial position, and/or cash flows.

The Company accounts for litigation and claims losses in accordance with ASC 450, "Contingencies" where loss contingency provisions are recognized for probable and estimable losses at the Company's best estimate of a loss or, when a best estimate cannot be made, at its estimate of the minimum loss. These estimates require the application of considerable judgment and are refined each accounting period as additional information becomes known. If the Company is initially unable to develop a best estimate of loss and therefore the minimum amount, which could be an immaterial amount, is recognized. As information becomes known, either the minimum loss amount is increased, or a best estimate can be made, resulting in additional loss provisions. A best estimate may be changed when events result in an expectation different than previously expected.

Pending Litigation and Claims

There are no material pending litigation or claims outstanding as of September 28, 2024.

16. Related Party Transactions

The Company has equity ownership in various investments that are accounted for under the equity method. The following is a description of the investments and related party transactions.

Powersem GmbH: The Company owns 45% of the outstanding equity of Powersem GmbH (“Powersem”), a module manufacturer based in Germany.

EB-Tech Co., Ltd.: The Company owns approximately 19% of the outstanding equity of EB Tech Co., Ltd. (“EB Tech”), a company with expertise in radiation technology based in South Korea.

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Automated Technology (Phil), Inc.: The Company owns approximately 24% of the outstanding common shares of Automated Technology (Phil), Inc. (“ATEC”), a supplier located in the Philippines that provides assembly and test services. One member of the Company's executive officers serves on the Board of Directors of ATEC.


	Three Months Ended September 28, 2024						Three Months Ended September 30, 2023
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Sales to related party	$	0.3	$	—	$	—	$	0.5	$	—	$	—
Purchase material/service from related party	0.6		0.2		0.6		1.2		0.1		2.0

	Nine Months Ended September 28, 2024						Nine Months Ended September 30, 2023
(in millions)	Powersem		EB-Tech		ATEC		Powersem		EB Tech		ATEC
Sales to related party	$	1.2	$	—	$	—	$	1.7	$	—	$	—
Purchase material/service from related party	3.0		0.6		3.5		3.3		0.3		7.6

	September 28, 2024						December 30, 2023
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Accounts receivable balance	$	0.1	$	—	$	—	$	—	$	—	$	—
Accounts payable balance	$	0.5	$	—	$	0.1	$	0.5	$	—	$	1.0

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ITEM 2. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Cautionary Statement Regarding Forward-Looking Statements Under the Private Securities Litigation Reform Act of 1995 (“PSLRA”).

Certain statements in this section and other parts of this Quarterly Report on Form 10-Q may constitute "forward-looking statements" within the meaning of the federal securities laws and are entitled to the safe-harbor provisions of the PSLRA. These statements include statements regarding the Company’s future performance, as well as management's expectations, beliefs, intentions, plans, estimates or projections relating to the future. Such statements can be identified by the use of forward-looking terminology such as "believes," "expects," "may," "estimates," "will," "should," "plans" or "anticipates" or the negative thereof or other variations thereon or comparable terminology, or by discussions of strategy, although not all forward-looking statements contain such terms. The Company cautions that forward-looking statements, which speak only as of the date they are made, are subject to risks, uncertainties and other factors, and actual results and outcomes may differ materially from those indicated or implied by the forward-looking statements. These risks, uncertainties and other factors include, but are not limited to, risks and uncertainties relating to general economic conditions; product demand and market acceptance; economic conditions; the impact of competitive products and pricing; product quality problems or product recalls; capacity and supply difficulties or constraints; coal mining exposures reserves; cybersecurity matters; failure of an indemnification for environmental liability; exchange rate fluctuations; commodity price fluctuations; the effect of the Company's accounting policies; labor disputes and shortages; restructuring costs in excess of expectations; pension plan asset returns less than assumed; uncertainties related to political or regulatory changes; integration of acquisitions may not be achieved in a timely manner, or at all; limited realization of the expected benefits from investment and strategic plans; and other risks that may be detailed in Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Item 3, “Quantitative and Qualitative Disclosures About Market Risk” of Part I and Item 1, “Legal Proceedings” and Item 1A, “Risk Factors” of Part II of this Report, as well as Item 1A. "Risk Factors" and Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and Item 7A, “Quantitative and Qualitative Disclosures About Market Risk” of Part II of the Company's Annual Report on Form 10-K for the year ended December 30, 2023, and the Company's other filings and submissions with the Securities and Exchange Commission. The Company does not undertake any obligation to update or revise any forward-looking statements to reflect future events or circumstances, new information or otherwise. .

This report, including the Management’s Discussion and Analysis of Financial Condition and Results of Operations, should be read in conjunction with information provided in the consolidated financial statements and the related Notes thereto appearing in the Company's Annual Report on Form 10-K for the year ended December 30, 2023.

Management’s Discussion and Analysis of Financial Condition and Results of Operations ("MD&A") is designed to provide information that is supplemental to, and should be read together with, the consolidated financial statements and the accompanying notes. Information in MD&A is intended to assist the reader in obtaining an understanding of (i) the consolidated financial statements, (ii) the changes in certain key items within those financial statements from year-to-year, (iii) the primary factors that contributed to those changes, and (iv) any changes in known trends or uncertainties that the Company is aware of and that may have a material effect on future performance. In addition, MD&A provides information about the Company’s segments and how the results of those segments impact the results of operations and financial condition as a whole.

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Executive Overview

Founded in 1927, Littelfuse is a diversified, industrial technology manufacturing company empowering a sustainable, connected, and safer world. Across more than 20 countries, and with approximately 16,000 global associates, we partner with customers to design and deliver innovative, reliable solutions. Serving over 100,000 end customers, our products are found in a variety of industrial, transportation and electronics end markets – everywhere, every day.

The Company maintains a network of global laboratories and engineering centers that develop new products and product enhancements, provide customer application support and test products for safety, reliability, and regulatory compliance. The Company conducts its business through three reportable segments: Electronics, Transportation, and Industrial. Within these segments, the Company designs, manufactures and sells components and modules empowering a sustainable, connected, and safer world. Our products protect against electrostatic discharge, power surges, short circuits, voltage spikes and other harmful occurrences, safely and efficiently control power and improve productivity and are used to identify and detect temperature, proximity, flow speed and fluid level in various applications.

Executive Summary

For the third quarter of 2024, the Company recognized net sales of $567.4 million, a decrease of $39.7 million, or 6.5% as compared to $607.1 million in the third quarter of 2023 including $0.7 million or 0.1% of favorable changes in foreign exchange rates. The decrease in net sales was primarily due to lower volume in the Electronics segment. The Company recognized net income of $58.1 million, or $2.32 per diluted share, in the third quarter of 2024 compared to $57.8 million, or $2.30 per diluted share, in the third quarter of 2023.

Net cash provided by operating activities was $207.0 million for the nine months ended September 28, 2024 compared to $313.1 million for the nine months ended September 30, 2023. The decrease in net cash provided by operating activities was primarily due to lower cash earnings.

Risk Related to Market Conditions

The Company performs its goodwill impairment tests annually on the first day of its fiscal fourth quarter, or more frequently if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying value. As part of its interim review for indicators of impairment, management analyzed potential changes in value of individual reporting units with goodwill based on each reporting unit’s operating results for the nine months ended September 28, 2024 compared to expected results. In addition, management considered how other key assumptions, including discount rates and expected long-term growth rates, used in the last fiscal year’s impairment analysis could be impacted by changes in market conditions and economic events.

Management considered trends in these factors when performing its assessment of whether an interim impairment review was required for any reporting unit. Based on this interim assessment, management concluded that as of September 28, 2024, no events or changes in circumstances indicated that it was more likely than not that the fair value of any reporting unit had declined below its carrying value. Nevertheless, significant changes in global economic and market conditions could result in changes to expectations of future financial results and key valuation assumptions. Such changes could result in revisions of management’s estimates of the fair value of the Company’s reporting units and could result in a material impairment of goodwill as of September 29, 2024, the Company’s next annual measurement date.

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In particular, the Industrial controls and sensors reporting unit within the Industrial segment is at risk for future impairment if projected operating results are not met or other inputs into the fair value measurement change. The potential reduction in the estimated fair value of the reporting unit is due to lower expectations for future revenue, profitability and cash flows for the Industrial controls and sensors reporting unit as compared to the expectations of the 2023 annual goodwill impairment test driven by lower-than-expected demand in the electric vehicle end market as well as reduced government funding to support charging infrastructures for electric vehicles, primarily in Europe. Continued negative trends could have a significant impact on the estimate fair value of this reporting unit and could result in future impairment charges. As of the October 1, 2023 annual goodwill impairment test, the Industrial controls and sensors reporting unit’s estimated fair value exceeded book value by approximately 23%. As of September 28, 2024, the Industrial controls and sensors reporting unit had $157.8 million of goodwill.

Other Risk

The Company has been notified by one of its customers of a product recall potentially due to certain fuses provided by Littelfuse and incorporated in such products. The Company is currently working with its customer to investigate the cause and level of responsibility for this recall. The Company has determined pursuant to ASC 450, "Contingencies" that a loss is reasonably possible. However, the Company continues to evaluate this matter and the ultimate costs of the recall and range of the potential loss cannot be determined at this time. Accordingly, no accrual has been made yet for this matter. Factors that will impact the amount of such losses include the per vehicle cost of fuse replacement, the determination of the relative liability among the customer, the Company, and any relevant third parties, as well as actual insurance recoveries.

Results of Operations

The following table summarizes the Company’s unaudited condensed consolidated results of operations for the periods presented. The third quarter of 2024 includes $1.8 million ($9.4 million year-to-date) of restructuring charges primarily related to employee termination cost, and $1.0 million ($2.8 million year-to-date) of legal and professional fees and other integration expenses related to completed and contemplated acquisitions. During the first quarter of 2024, the Company recognized a $0.9 million impairment charge related to certain machinery and equipment in the commercial vehicle business within the Transportation segment. See Note 7, Restructuring, Impairment, and Other Charges, for further discussion. During the third quarter of 2024, the Company recorded a gain of $0.5 million related to the sale of a land use right within the Electronics segment. In addition, the Company recognized a gain of $1.0 million for the sale of two buildings within the Transportation segment during the first half of 2024.

The third quarter of 2023 includes $3.7 million ($8.5 million year-to-date) of restructuring charges, primarily related to employee termination costs, and $1.8 million ($9.0 million year-to-date) of legal and professional fees and other integration expenses related to completed and contemplated acquisitions. During the third quarter of 2023, the Company recognized a $0.8 million impairment charge substantially related to certain patents in a business within the Industrial segment. In addition, during the second quarter of 2023, the Company recognized a $3.9 million impairment charge related to the land and building in the commercial vehicle business within the Transportation segment. See Note 7, Restructuring, Impairment, and Other Charges, for further discussion.


	Third Quarter								First Nine Months
(in thousands)	2024		2023		Change		% Change		2024		2023		Change		% Change
Net sales	$	567,390	$	607,071	$	(39,681)	(6.5)	%	$	1,661,263	$	1,828,850	$	(167,587)	(9.2)	%
Cost of sales	351,498		380,200		(28,702)		(7.5)	%	1,050,559		1,122,190		(71,631)		(6.4)	%
Gross profit	215,892		226,871		(10,979)		(4.8)	%	610,704		706,660		(95,956)		(13.6)	%
Operating expenses	128,071		133,226		(5,155)		(3.9)	%	402,425		410,321		(7,896)		(1.9)	%
Operating income	87,821		93,645		(5,824)		(6.2)	%	208,279		296,339		(88,060)		(29.7)	%
Income before income taxes	77,716		75,295		2,421		3.2	%	194,564		269,649		(75,085)		(27.8)	%
Income taxes	19,658		17,507		2,151		12.3	%	42,588		53,045		(10,457)		(19.7)	%
Net income	$	58,058	$	57,788	$	270	0.5	%	$	151,976	$	216,604	$	(64,628)	(29.8)	%

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Net Sales

Net sales decreased $39.7 million, or 6.5%, for the third quarter of 2024 compared to the third quarter of 2023 including $0.7 million or 0.1% of favorable changes in foreign exchange rates. The decrease in net sales was primarily due to lower volume of $39.7 million in the Electronics segment.

Net sales decreased $167.6 million, or 9.2%, for the first nine months of 2024 compared to the first nine months of 2023, including $6.2 million or 0.3% of unfavorable changes in foreign exchange rates. The sales decrease was primarily due to lower volume of $151.7 million and $10.8 million in the Electronics and Industrial segments, respectively.

Cost of Sales

Cost of sales was $351.5 million, or 61.9% of net sales, in the third quarter of 2024, compared to $380.2 million, or 62.6% of net sales, in the third quarter of 2023. As a percent of net sales, cost of sales decreased 0.7% driven by improved margins from all businesses within the Transportation and Industrial segments driven by favorable price, product mix and cost reduction initiatives, partially offset by lower volume in the Electronics segments.

Cost of sales was $1,050.6 million, or 63.2% of net sales, in the first nine months of 2024, compared to $1,122.2 million, or 61.4% of net sales, in the first nine months of 2023. As a percent of net sales, cost of sales increased 1.8% driven by lower volume in the Electronics and Industrial segments, partially offset by improved margin from all businesses within the Transportation segment driven by favorable price, product mix and cost reduction initiatives.

Gross Profit

Gross profit was $215.9 million, or 38.1% of net sales, in the third quarter of 2024 compared to $226.9 million, or 37.4% of net sales, for the third quarter of 2023. The $11.0 million decrease in gross profit was primarily due to lower volume in the Electronics segment, partially offset by improved margin from the Transportation and Industrial segments driven by favorable price, product mix and cost reduction initiatives.

Gross profit was $610.7 million, or 36.8% of net sales, in the first nine months of 2024 compared to $706.7 million, or 38.6% of net sales, for the first nine months of 2023. The $96.0 million decrease in gross profit was primarily due to lower volume in the Electronics and Industrial segments, partially offset by improved margin from the commercial vehicle and passenger car products businesses within the Transportation segment driven by favorable price, product mix and cost reduction initiatives.

Operating Expenses

Operating expenses were $128.1 million, or 22.6% of net sales, for the third quarter of 2024 compared to $133.2 million, or 21.9% of net sales, for the third quarter of 2023. The decrease in operating expenses of $5.2 million was primarily due to lower selling, general, and administrative expenses of $3.3 million driven by cost control initiatives and lower restructuring, impairment, and other charges of $2.7 million, partially offset by higher research and development expenses of $1.0 million.

Operating expenses were $402.4 million, or 24.2% of net sales, for the first nine months of 2024 compared to $410.3 million, or 22.4% of net sales, for the first nine months of 2023. The decrease in operating expenses of $7.9 million was primarily due to lower selling, general, and administrative expenses of $6.7 million as a result of lower legal and professional fees and other integration expenses related to completed and contemplated acquisitions, lower restructuring, impairment, and other charges of $2.9 million caused by a $3.9 million impairment charge recognized during the second quarter 2023 related to the land and building of a property within the Transportation segment, and lower amortization expense of $2.4 million, partially offset by higher research and development expenses of $4.0 million.

Operating Income

Operating income was $87.8 million, representing a decrease of $5.8 million, or 6.2%, for the third quarter of 2024 compared to $93.6 million for the third quarter of 2023. The decrease in operating income was due to lower gross profit from the Electronics segment, partially offset by higher gross profit from the Transportation and Industrial segments. Operating margins increased from 15.4% in the third quarter of 2023 to 15.5% in the third quarter of 2024 driven by improved gross margin in the Transportation and Industrial segments, partially offset by lower volume in the Electronics segment.

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Operating income was $208.3 million, representing a decrease of $88.1 million, or 29.7%, for the first nine months of 2024 compared to $296.3 million for the first nine months of 2023. The decrease in operating income was due to lower gross profit from the Electronics and Industrial segments, partially offset by higher gross profit from the Transportation segment. Operating margins decreased from 16.2% in the first nine months quarter of 2023 to 12.5% in the first nine months of 2024 driven by lower volume in the Electronics segment.

Income Before Income Taxes

Income before income taxes was $77.7 million, or 13.7% of net sales, for the third quarter of 2024 compared to $75.3 million, or 12.4% of net sales, for the third quarter of 2023. In addition to the factors impacting comparative results for operating income discussed above, income before income taxes was primarily benefited by unrealized gains of $3.1 million in the third quarter of 2024 compared to unrealized losses of $1.6 million in the third quarter of 2023 related to the Company's equity investment, higher interest income of $2.3 million from short-term investment in cash equivalents, and lower foreign exchange losses of $2.1 million in the third quarter of 2024 compared to the third quarter of 2023.

Income before income taxes was $194.6 million, or 11.7% of net sales, for the first nine months of 2024 compared to $269.6 million, or 14.7% of net sales, for the first nine months of 2023. In addition to the factors impacting comparative results for operating income discussed above, income before income taxes was primarily benefited by higher interest income of $8.2 million from short-term investments in cash equivalents and lower foreign exchange losses of $4.4 million in the first nine months of 2024 compared to the first nine months of 2023, and unrealized gains of $1.9 million during the first nine months of 2024 compared to unrealized losses of $0.9 million during the first nine months of 2023 related to the Company's equity investment.

Income Taxes

The effective tax rate for the three and nine months ended September 28, 2024 was 25.3% and 21.9%, compared to the effective tax rate for the three and nine months ended September 30, 2023 of 23.3% and 19.7%. The effective tax rates for 2024 are higher than the effective tax rates for the comparable 2023 periods primarily due to decreases in the income earned in lower tax jurisdictions in 2024 as compared to 2023.

Segment Results of Operations

The Company reports its operations by the following segments: Electronics, Transportation and Industrial. Segment information is described more fully in Note 14, Segment Information, of the Notes to Condensed Consolidated Financial Statements included in this Quarterly Report.

The following table is a summary of the Company’s net sales and operating income by segment:


Net Sales	Third Quarter								First Nine Months
(in thousands)	2024		2023		Change		% Change		2024		2023		Change		% Change
Electronics	$	304,188	$	343,933	$	(39,745)	(11.6)	%	$	900,932	$	1,052,673	$	(151,741)	(14.4)	%
Transportation	171,381		177,019		(5,638)		(3.2)	%	510,711		515,708		(4,997)		(1.0)	%
Industrial	91,821		86,119		5,702		6.6	%	249,620		260,469		(10,849)		(4.2)	%
Total	$	567,390	$	607,071	$	(39,681)	(6.5)	%	$	1,661,263	$	1,828,850	$	(167,587)	(9.2)	%

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Operating Income	Third Quarter								First Nine Months
(in thousands)	2024		2023		Change		% Change		2024		2023		Change		% Change
Electronics	$	48,891	$	77,022	$	(28,131)	(36.5)	%	$	132,859	$	247,028	$	(114,169)	(46.2)	%
Transportation	23,485		9,694		13,791		142.3	%	54,925		26,015		28,910		111.1	%
Industrial	17,711		13,201		4,510		34.2	%	32,054		45,450		(13,396)		(29.5)	%
Other (a)	(2,266)		(6,272)		4,006				(11,559)		(22,154)		10,595
Total	$	87,821	$	93,645	$	(5,824)	(6.2)	%	$	208,279	$	296,339	$	(88,060)	(29.7)	%

(a) Included in “Other” Operating income for the third quarter of 2024 was $1.8 million ($9.4 million year-to-date) of restructuring charges primarily related to employee termination cost, and $1.0 million ($2.8 million year-to-date) of legal and professional fees and other integration expenses related to completed and contemplated acquisitions. During the first quarter of 2024, the Company recognized a $0.9 million impairment charge related to certain machinery and equipment in the commercial vehicle business within the Transportation segment. See Note 7, Restructuring, Impairment, and Other Charges, for further discussion. During the third quarter of 2024, the Company recorded a gain of $0.5 million related to the sale of a land use right within the Electronics segment. In addition, the Company recognized a gain of $1.0 million for the sale of two buildings within the Transportation segment during the first half of 2024.

Electronics Segment

Net Sales

Net sales decreased $39.7 million, or 11.6%, in the third quarter of 2024 compared to the third quarter of 2023 and included favorable changes in foreign exchange rates of $0.5 million. The sales decrease was due to lower volume from the semiconductor business resulting in a sales decline of $39.6 million driven by reduced demand across industrial markets and inventory rebalancing at certain distributors.

Net sales decreased $151.7 million, or 14.4%, in the first nine months of 2024 compared to the first nine months of 2023 and included unfavorable changes in foreign exchange rates of $3.0 million. The sales decrease was mainly due to lower volume from the semiconductor business of $129.4 million and to a lesser extent the electronics products business driven by inventory rebalancing at certain distributors and reduced demand across certain electronics markets, including consumer facing and personal electronics, as well as industrial markets.

Operating Income

Operating income was $48.9 million, representing a decrease of $28.1 million, or 36.5%, for the third quarter of 2024 compared to $77.0 million for the third quarter of 2023. The decrease in operating income was primarily from the semiconductor business due to lower volume leverage and unfavorable product mix. Operating margins decreased from 22.4% in the third quarter of 2023 to 16.1% in the third quarter of 2024 primarily due to the lower volume.

Operating income was $132.9 million, representing a decrease of $114.2 million, or 46.2%, for the first nine months of 2024 compared to $247.0 million for the first nine months of 2023. The decrease in operating income was primarily due to lower volume leverage and unfavorable product mix that were partially offset by cost control initiatives. Operating margins decreased from 23.5% in the first nine months of 2023 to 14.7% in the first nine months of 2024 primarily due to the lower volume.

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Transportation Segment

Net Sales

Net sales decreased $5.6 million, or 3.2%, in the third quarter of 2024 compared to the third quarter of 2023 and included favorable changes in foreign exchange rates of $0.5 million. The sales decline was primarily due to lower automotive sensors business volume of $5.2 million driven by the strategic exit of certain lower margin products.

Net sales decreased $5.0 million, or 1.0%, in the first nine months of 2024 compared to the first nine months of 2023 and included unfavorable changes in foreign exchange rates of $2.3 million. The sales decrease was mainly driven by lower volume of $9.1 million and $6.4 million from the automotive sensors and the commercial vehicles businesses, respectively, due to the strategic exit of certain lower margin products and reduced demand largely due to inventory rebalancing at certain distributors and customers, partially offset by a sales increase of $10.5 million from the passenger car business driven by the ongoing electronification and electrification of vehicles and vehicle content growth.

Operating Income

Operating income was $23.5 million, representing an increase of $13.8 million, or 142.3%, for the third quarter of 2024 compared to $9.7 million for the third quarter of 2023. The increase in operating income was primarily from the commercial vehicle and passenger car businesses due to favorable price and cost reduction initiatives. Operating margins increased from 5.5% in the third quarter of 2023 to 13.7% in the third quarter of 2024 primarily driven by favorable price and products mix and cost reduction initiatives from all businesses.

Operating income was $54.9 million, representing an increase of $28.9 million, or 111.1%, for the first nine months of 2024 compared to $26.0 million for the first nine months of 2023. The increase in operating income was primarily due to favorable price and cost reduction initiatives from the commercial vehicle business. Operating margins increased from 5.0% in the first nine months of 2023 to 10.8% in the first nine months of 2024 primarily driven by favorable price and products mix and cost reduction initiatives from the commercial vehicle business.

Industrial Segment

Net Sales

Net sales increased by $5.7 million, or 6.6%, in the third quarter of 2024 compared to the third quarter of 2023, which included unfavorable changes in foreign exchange rates of $0.3 million. The sales increase was due to higher volume from industrial circuit protection and industrial control and sensor products driven by higher end market demand.

Net sales decreased by $10.8 million, or 4.2%, in the first nine months of 2024 compared to the first nine months of 2023, which included unfavorable changes in foreign exchange rates of $0.9 million. The sales decrease was due to lower volume across industrial control products driven by softer end market demand in the first half of 2024.

Operating Income

Operating income was $17.7 million, representing an increase of $4.5 million, or 34.2%, for the third quarter of 2024 compared to $13.2 million for the third quarter of 2023. The increase in operating income was driven by higher volume from industrial circuit protection and industrial control and sensor products driven by increased end market demand. Operating margins increased from 15.3% in the third quarter of 2023 to 19.3% in the third quarter of 2024 due to higher volume, product mix and price.

Operating income was $32.1 million, representing a decrease of $13.4 million, or 29.5%, for the first nine months of 2024 compared to $45.5 million for the first nine months of 2023. The decrease in operating income was driven by lower volume due to reduced industrial end market demand across industrial control products and industrial circuit protection along with cost inflation. Operating margins decreased from 17.4% in the first nine months of 2023 to 12.8% in the first nine months of 2024 due to lower demand and cost inflation, partially offset by favorable price.

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Geographic Net Sales Information

Net sales by geography represent net sales to customer or distributor locations. The following table is a summary of the Company’s net sales by geography:


	Third Quarter								First Nine Months
(in thousands)	2024		2023		Change		% Change		2024		2023		Change		% Change
Americas	$	237,951	$	236,706	$	1,245	0.5	%	$	681,064	$	698,456	$	(17,392)	(2.5)	%
Asia-Pacific	213,942		235,908		(21,966)		(9.3)	%	621,731		693,611		(71,880)		(10.4)	%
Europe	115,497		134,457		(18,960)		(14.1)	%	358,468		436,783		(78,315)		(17.9)	%
Total	$	567,390	$	607,071	$	(39,681)	(6.5)	%	$	1,661,263	$	1,828,850	$	(167,587)	(9.2)	%

Americas

Net sales increased $1.2 million, or 0.5%, in the third quarter of 2024 compared to the third quarter of 2023 and included unfavorable changes in foreign exchange rates of $0.3 million. The net sales increase was due to higher volume from the Industrial segment, partially offset by lower volume from the Electronics segment compared to the third quarter of 2023.

Net sales decreased $17.4 million, or 2.5%, in the first nine months of 2024 compared to the first nine months of 2023 and included unfavorable changes in foreign exchange rates of $0.5 million. The decrease in net sales was primarily due to lower volume from the Electronics segment, partially offset by higher volume from the Industrial segment and the commercial vehicle and passenger car products businesses within the Transportation segment compared to the first nine months of 2023.

Asia-Pacific

Net sales decreased $22.0 million, or 9.3%, in the third quarter of 2024 compared to the third quarter of 2023 and included unfavorable changes in foreign exchange rates of $0.5 million. The decrease in net sales was primarily due to lower net sales from the Electronics and Industrial segments, partially offset by higher net sales from the commercial vehicle and passenger car products businesses within the Transportation segment compared to the third quarter of 2023.

Net sales decreased $71.9 million, or 10.4%, in the first nine months of 2024 compared to the first nine months of 2023 and included unfavorable changes in foreign exchange rates of $8.1 million. The decrease in net sales was primarily due to lower net sales from the Electronics and Industrial segments, partially offset by higher net sales from the passenger car products business within the Transportation segment compared to the first nine months of 2023.

Europe

Net sales decreased $19.0 million, or 14.1%, in the third quarter of 2024 compared to the third quarter of 2023 and included favorable changes in foreign exchange rates of $1.5 million. The decrease in net sales was primarily due to lower net sales from the Electronics and Transportation segments compared to the third quarter of 2023.

Net sales decreased $78.3 million, or 17.9%, in the first nine months of 2024 compared to the first nine months of 2023 and included favorable changes in foreign exchange rates of $2.4 million. The decrease in net sales was primarily due to lower net sales from the Electronics segment and lower net sales from the commercial vehicle and automotive sensors businesses within the Transportation segment compared to the first nine months of 2023.

Liquidity and Capital Resources

The Company has historically supported its liquidity needs through cash flows from operations. Management expects that the Company’s (i) current level of cash, cash equivalents, and marketable securities, (ii) current and forecasted cash flows from operations, (iii) availability under existing funding arrangements, and (iv) access to capital in the capital markets will provide sufficient funds to support the Company’s operations, capital expenditures, investments, and debt obligations on both a short-term and long-term basis.

Cash and cash equivalents were $629.7 million as of September 28, 2024, an increase of $74.2 million, as compared to December 30, 2023. As of September 28, 2024, $135.5 million of the Company's $629.7 million cash and cash equivalents was held by U.S. subsidiaries.

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Revolving Credit Facility and Term Loan

Loans made under the available credit facility pursuant to the Credit Agreement ("the Credit Facility") bear interest at the Company’s option, at either Secured Overnight Financing Rate ("SOFR"), fixed for interest periods of one, two, three or six-month periods, plus 1.00% to 1.75%, plus a SOFR adjustment of 0.10% or at the bank’s Base Rate, as defined in the Credit Agreement, plus 0.00% to 0.75%, based upon the Company’s Consolidated Leverage Ratio, as defined in the Credit Agreement. The Company is also required to pay commitment fees on unused portions of the Credit Facility ranging from 0.10% to 0.175%, based on the Consolidated Leverage Ratio, as defined in the Credit Agreement. The Credit Agreement includes representations, covenants and events of default that are customary for financing transactions of this nature.

As of September 28, 2024, the effective interest rate on unhedged portion of the outstanding borrowings under the credit facility was 6.60%, and 4.13% on the hedged portion.

Senior Notes

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Debt Covenants

The Company was in compliance with all covenants under the Credit Agreement and Senior Notes as of September 28, 2024 and currently expects to remain in compliance based on management’s estimates of operating and financial results for 2023. As of September 28, 2024, the Company met all the conditions required to borrow under the Credit Agreement and management expects the Company to continue to meet the applicable borrowing conditions.

Acquisitions

On June 28, 2023, the Company entered into a definitive purchase agreement to acquire a 200mm wafer fab located in Dortmund, Germany (“Dortmund Fab”) from Elmos Semiconductor SE. The acquisition of the Dortmund Fab is expected to close in early fiscal year 2025. The total purchase price for the fab is approximately 93 million Euro, of which a 37.2 million Euro down payment (approximately $40.5 million), recorded in Prepaid expenses and other current assets in the Condensed Consolidated Balance Sheets. The down payment was paid in the third quarter of 2023 after regulatory approvals, and approximately 56 million Euro will be paid at closing. The transaction is not expected to have a material impact on the Company’s fiscal year 2024 financial results and will be reported in the Electronics-Semiconductor business within the Company’s Electronics segment.

Dividends

During the third quarter of 2024 the Company paid quarterly dividends of $17.4 million to the shareholders. On October 29, 2024, the Company announced the declaration of a quarterly cash dividend of $0.70 per share payable on December 5, 2024 to stockholders of record as of November 21, 2024.

Cash Flow Overview


	First Nine Months
(in thousands)	2024		2023
Net cash provided by operating activities	$	206,999	$	313,140
Net cash used in investing activities	(41,134)		(261,379)
Net cash used in financing activities	(91,299)		(47,144)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(396)		(7,965)
Increase (decrease) in cash, cash equivalents, and restricted cash	74,170		(3,348)
Cash, cash equivalents, and restricted cash at beginning of period	557,123		564,939
Cash, cash equivalents, and restricted cash at end of period	$	631,293	$	561,591

Cash Flow from Operating Activities

Operating cash inflows are largely attributable to sales of the Company’s products. Operating cash outflows are largely attributable to recurring expenditures for raw materials, labor, rent, interest, taxes and other operating activities.

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Cash Flow from Investing Activities

Net cash used in investing activities was $41.1 million for the nine months ended September 28, 2024 compared to $261.4 million during the nine months ended September 30, 2023. Capital expenditures were $50.1 million, representing a decrease of $13.1 million compared to the nine months ended September 30, 2023. During the nine months ended September 28, 2024, the Company received net proceeds of $9.7 million mainly from the sale of a land use right within the Electronics segment and two buildings from the Transportation segment. Net cash paid for the Western Automation acquisition was $198.8 million during the nine months ended September 30, 2023.

Cash Flow from Financing Activities

Net cash used in financing activities was $91.3 million for the nine months ended September 28, 2024 compared to $47.1 million during the nine months ended September 30, 2023. During the nine months ended September 28, 2024 and September 30, 2023, the Company made payments of $3.8 million and $5.6 million on the term loan, respectively. The Company paid dividends of $49.7 million and $46.0 million in the nine months ended September 28, 2024 and September 30, 2023, respectively. Additionally, during the nine months ended September 28, 2024, the Company repurchased 179,311 shares of its common stock totaling $40.9 million.

Share Repurchase Program

The Company’s Board of Directors authorized the repurchase of up to $300.0 million in the aggregate of shares of the Company’s common stock under a program for the period May 1, 2021 to April 30, 2024 ("2021 program"). On April 25, 2024, the Company's Board of Directors authorized a new three year program to repurchase up to $300.0 million in the aggregate of shares of the Company's stock for the period May 1, 2024 to April 30, 2027 ("2024 program") to replace the expired 2021 program. The Company did not repurchase shares of its common stock for the three months ended September 28, 2024. During the nine months ended September 28, 2024, the Company repurchased 179,311 shares of its common stock totaling $40.9 million, of which $38.9 million was pursuant to the 2021 program and $2.0 million was pursuant to the 2024 program. The Company did not repurchase shares of its common stock for the three and nine months ended September 30, 2023.

Off-Balance Sheet Arrangements

Critical Accounting Policies and Estimates

The Company’s Condensed Consolidated Financial Statements are prepared in accordance with U.S. GAAP. In connection with the preparation of the Condensed Consolidated Financial Statements, the Company uses estimates and makes judgments and assumptions about future events that affect the reported amounts of assets, liabilities, revenue, expenses, and the related disclosures. The assumptions, estimates, and judgments are based on historical experience, current trends, and other factors the Company believes are relevant at the time it prepares the Condensed Consolidated Financial Statements.

The significant accounting policies and critical accounting estimates are consistent with those discussed in Note 1, Summary of Significant Accounting Policies and Other Information, to the consolidated financial statements and the MD&A section of the Company’s Annual Report on Form 10-K for the year ended December 30, 2023. During the nine months ended September 28, 2024, there were no significant changes in the application of critical accounting policies and estimates.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

See Item 7A, Quantitative and Qualitative Disclosures about Market Risk, of the Company's Annual Report on Form 10-K for the year ended December 30, 2023. During the nine months ended September 28, 2024, there have been no material changes in the Company's exposure to market risk.

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ITEM 4. CONTROLS AND PROCEDURES

(a) Evaluation of Disclosure Controls and Procedures

Disclosure controls and procedures (as defined in Rules 13a-15(b) and 15d-15(e) under the Exchange Act) are designed to ensure that information required to be disclosed in reports filed or submitted under the Exchange Act is recorded, processed, summarized, and reported within the time periods specified in the SEC rules and forms, and that such information is accumulated and communicated to management, including the Company's Chief Executive Officer and Chief Financial Officer, to allow timely decisions regarding required disclosures.

In connection with the preparation of this report, management, under the supervision and with the participation of the Chief Executive Officer and Chief Financial Officer, conducted an evaluation of the effectiveness of the design and operation of the Company's disclosure controls and procedures as of September 28, 2024. Based on that evaluation, the Company's Chief Executive Officer and Chief Financial Officer have concluded that, as of the quarter ended September 28, 2024, the Company's disclosure controls and procedures were effective.

(b) Changes in Internal Control over Financial Reporting

There were no changes in the Company's internal control over financial reporting identified in connection with the evaluation required by Rules 13a-15(f) and 15d-15(f) under the Exchange Act that occurred during the quarter ended September 28, 2024 that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting.

PART II – OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

None.

ITEM 1A. RISK FACTORS

The Company may incur material losses and costs as a result of defects in its products, including as a result of warranty claims, product recalls, and product liability.

The Company has been notified by one of its customers of a product recall potentially due to certain fuses provided by the Company and incorporated in the customer’s products. The Company is working with its customer to investigate the cause and level of responsibility for this recall. Given the highly complex products that the Company manufactures, it is possible that those products, including third-party components contained in those products, may contain defects or fail to work properly or as intended when integrated with customer products. This could subject the Company to product liability or warranty claims, which could lead to significant expenses, including recall, repair, and/or replacement costs and, potentially breach of contract or other damage claims, all of which could materially adversely affect the Company’s financial results. This is particularly true if the Company does not discover these issues until after the products have been sold and deployed. In addition to expenses directly attributable to product defects, the Company’s reputation and ability to attract and retain customers may be harmed. Further, significant warranty and product liability claims may, among other things, result in the need for significant reserves, divert management’s and other personnel’s attention, cause production delays, impact on-time delivery of products to other customers, reduce margins, and delay recognition of revenues. It is also possible that end users of customers’ products may make claims against the Company, resulting in additional defense costs and potential damages. Although, the Company generally attempts to limit its liability through standard contract terms and conditions and maintains insurance in connection with product defects and warranty claims, it is possible that the Company may not be able to enforce contractual limitations on damages and/or that a successful claim against the Company may exceed the Company’s applicable insurance policy limits or be excluded from coverage.

Other than the item listed above, there have been no material changes in our risk factors from those disclosed in our Annual Report on Form 10-K for our year ended December 30, 2023.

ITEM 2. UNREGISTERED SALES OF EQUITY SECURITIES AND USE OF PROCEEDS

Recent Sales of Unregistered Securities

None.

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Repurchases of Common Stock

The Company’s Board of Directors authorized the repurchase of up to $300.0 million in the aggregate of shares of the Company’s common stock under a program for the period May 1, 2021 to April 30, 2024 ("2021 program"). On April 25, 2024, the Company's Board of Directors authorized a new three year program to repurchase up to $300.0 million in the aggregate of shares of the Company's stock for the period May 1, 2024 to April 30, 2027 ("2024 program") to replace the expired 2021 program. The Company did not repurchase shares of its common stock for the three months ended September 28, 2024. During the nine months ended September 28, 2024, the Company repurchased 179,311 shares of its common stock totaling $40.9 million, of which $38.9 million was pursuant to the 2021 program and $2.0 million was pursuant to the 2024 program. There is $298.0 million of an authorized amount yet purchased under the 2024 program as of September 28, 2024.

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4. MINE SAFETY DISCLOSURES

None.

ITEM 5. OTHER INFORMATION

Rule 10b5-1 Trading Plans

The adoption or termination of contracts, instructions or written plans for the purchase or sale of our securities by our Section 16 officers and directors for the three months ended September 28, 2024, each of which is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act (“Rule 10b5-1 Plan”), were as follows:

Name

Title

Action

Date Adopted

Expiration Date

Aggregate # of securities to be Sold

Matthew J. Cole (1)

Senior Vice President, eMobility and Corporate Strategy

Adoption

9/12/2024

3/31/2025

1,500

(1) On September 12, 2024, Matthew J. Cole, Senior Vice President, eMobility and Corporate Strategy, entered into a pre-arranged stock trading plan pursuant to Rule 10b5-1. Mr. Cole’s plan provided for the potential exercise of vested stock options and the associated sale of up to 1,500 shares of the Company’s common stock. The stock options covered by the plan will otherwise expire on April 27, 2025 if they have not been exercised. The plan expires on March 31, 2025, or upon the earlier completion of all authorized transactions under the plan.

Other than those disclosed above, none of our directors or officers adopted or terminated a "non-Rule 10b5-1 trading arrangement" as defined in Item 408 of Regulation S-K.

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ITEM 6. EXHIBITS


Exhibit						Description

31.1*						Certification of David W. Heinzmann, Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

31.2*						Certification of Meenal A. Sethna, Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.

32.1**						Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.

101						The following financial information from LITTELFUSE, Inc.'s Quarterly Report on Form 10-Q for the quarter ended September 28, 2024 formatted in Inline XBRL (Extensible Business Reporting Language) includes: (i) the Condensed Consolidated Balance Sheets, (ii) the Condensed Consolidated Statements of Net Income, (iii) the Condensed Consolidated Statements of Comprehensive Income, (iv) the Condensed Consolidated Statements of Stockholders' Equity, (v) the Condensed Consolidated Statements of Cash Flows, and (vi) Notes to the Condensed Consolidated Financial Statements.

104						The cover page from this Quarterly Report on Form 10-Q for the quarter ended September 28, 2024, formatted in Inline XBRL.


*						Filed herewith.
**						Furnished herewith.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this Quarterly Report on Form 10-Q for the quarter ended September 28, 2024, to be signed on its behalf by the undersigned thereunto duly authorized.


	Littelfuse, Inc.

	By:	/s/ Meenal A. Sethna
		Meenal A. Sethna
	Executive Vice President and Chief Financial Officer

Date: October 30, 2024	By:	/s/ Jeffrey G. Gorski
		Jeffrey G. Gorski
	Senior Vice President and Chief Accounting Officer

EXHIBIT 31.1

SECTION 302 CERTIFICATION

I, David W. Heinzmann, certify that:

1I have reviewed this Quarterly Report on Form 10-Q of Littelfuse Inc.;

2Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4The registrant’s other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a)designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b)designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c)evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d)disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5The registrant’s other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a)all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Dated: October 30, 2024
			/s/ David W. Heinzmann
			David W. Heinzmann President and Chief Executive Officer

EXHIBIT 31.2

SECTION 302 CERTIFICATION

I, Meenal A. Sethna, certify that:

1I have reviewed this Quarterly Report on Form 10-Q of Littelfuse Inc.;

(b)any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Dated: October 30, 2024
			/s/ Meenal A. Sethna
			Meenal A. Sethna Executive Vice President and Chief Financial Officer

EXHIBIT 32.1

LITTELFUSE, INC.

Certification Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, 18 U.S.C. Section 1350

Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of Section 1350, Chapter 63 of title 18, United States Code), each of the undersigned officers of Littelfuse, Inc. (“the Company”) does hereby certify that to his knowledge:

The Quarterly Report of the Company on Form 10-Q for the fiscal quarter ended September 28, 2024 (“the Report”) fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934, and the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.


/s/ David W. Heinzmann						/s/ Meenal A. Sethna
David W. Heinzmann						Meenal A. Sethna
President and Chief Executive Officer						Executive Vice President and Chief Financial Officer



Dated: October 30, 2024						Dated: October 30, 2024

Cover Page - shares	9 Months Ended
Cover Page - shares	Sep. 28, 2024	Oct. 25, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 28, 2024
Document Transition Report	false
Entity File Number	0-20388
Entity Registrant Name	LITTELFUSE INC /DE
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	36-3795742
Entity Address, Address Line One	8755 West Higgins Road
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60631
City Area Code	773
Local Phone Number	628-1000
Title of 12(b) Security	Common Stock, $0.01 par value
Trading Symbol	LFUS
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		24,814,687
Entity Central Index Key	0000889331
Current Fiscal Year End Date	--12-28
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Amendment Flag	false

CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Current assets:
Cash and cash equivalents (Note 1)	$ 629,670	$ 555,513
Short-term investments	1,011	235
Trade receivables, less allowances of $76,151 and $84,696 at September 28, 2024 and December 30, 2023, respectively	338,758	287,018
Inventories (Note 3)	453,781	474,607
Prepaid income taxes and income taxes receivable	6,793	8,701
Prepaid expenses and other current assets	132,510	82,526
Total current assets	1,562,523	1,408,600
Net property, plant, and equipment (Note 4)	481,592	493,153
Intangible assets, net of amortization (Note 5)	560,994	606,136
Goodwill (Note 5)	1,317,748	1,309,998
Investments	26,607	24,821
Deferred income taxes	11,955	10,486
Right of use lease assets	60,277	62,370
Other long-term assets	40,548	79,711
Total assets	4,062,244	3,995,275
Current liabilities:
Accounts payable	179,486	173,535
Accrued liabilities (Note 6)	152,772	149,214
Accrued income taxes	39,809	38,725
Current portion of long-term debt (Note 8)	67,799	14,020
Total current liabilities	439,866	375,494
Long-term debt, less current portion (Note 8)	799,949	857,915
Deferred income taxes	95,554	110,820
Accrued post-retirement benefits	31,373	34,422
Non-current lease liabilities	52,074	49,472
Other long-term liabilities	70,328	86,671
Total liabilities	1,489,144	1,514,794
Commitments and contingencies (Note 15)
Shareholders’ equity:
Common stock, par value $0.01 per share: 34,000,000 shares authorized; shares issued, September 28, 2024–26,749,671; December 30, 2023–26,624,071	262	262
Additional paid-in capital	1,043,736	1,012,325
Treasury stock, at cost: 1,936,668 and 1,711,290 shares, respectively	(305,259)	(259,263)
Accumulated other comprehensive loss	(50,782)	(55,817)
Retained earnings	1,884,823	1,782,662
Littelfuse, Inc. shareholders’ equity	2,572,780	2,480,169
Non-controlling interest	320	312
Total equity	2,573,100	2,480,481
Total liabilities and equity	$ 4,062,244	$ 3,995,275

CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Statement of Financial Position [Abstract]
Allowance for trade receivables	$ 76,151	$ 84,696
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	34,000,000	34,000,000
Common stock, issued (in shares)	26,749,671	26,624,071
Treasury stock (in shares)	1,936,668	1,711,290

CONDENSED CONSOLIDATED STATEMENTS OF NET INCOME (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Income Statement [Abstract]
Net sales	$ 567,390	$ 607,071	$ 1,661,263	$ 1,828,850
Cost of sales	351,498	380,200	1,050,559	1,122,190
Gross profit	215,892	226,871	610,704	706,660
Selling, general, and administrative expenses	83,897	87,204	263,395	270,057
Research and development expenses	26,470	25,484	81,283	77,270
Amortization of intangibles	15,864	16,022	47,418	49,773
Restructuring, impairment, and other charges	1,840	4,516	10,329	13,221
Total operating expenses	128,071	133,226	402,425	410,321
Operating income	87,821	93,645	208,279	296,339
Interest expense	9,772	10,101	29,358	29,803
Foreign exchange loss	9,630	11,776	4,273	8,697
Other income, net	(9,297)	(3,527)	(19,916)	(11,810)
Income before income taxes	77,716	75,295	194,564	269,649
Income taxes	19,658	17,507	42,588	53,045
Net income	$ 58,058	$ 57,788	$ 151,976	$ 216,604
Earnings per share:
Basic (in dollars per share)	$ 2.34	$ 2.32	$ 6.12	$ 8.72
Diluted (in dollars per share)	$ 2.32	$ 2.30	$ 6.07	$ 8.63
Weighted-average shares and equivalent shares outstanding:
Basic (in shares)	24,796	24,893	24,822	24,838
Diluted (in shares)	25,025	25,143	25,040	25,100

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 58,058	$ 57,788	$ 151,976	$ 216,604
Other comprehensive income (loss):
Defined benefit pension plan and other adjustments, net of tax	191	(3)	861	(156)
Cash flow hedges, net of tax	(8,297)	1,546	(6,389)	2,141
Foreign currency translation adjustments	64,499	(3,677)	10,563	(5,747)
Comprehensive income	$ 114,451	$ 55,654	$ 157,011	$ 212,842

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
OPERATING ACTIVITIES
Net income	$ 58,058	$ 57,788	$ 151,976	$ 216,604
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	17,300	17,900	51,025	53,510
Amortization of intangibles	15,864	16,022	47,418	49,773
Deferred revenue			(1,764)	1,769
Impairment charges	0	818	933	4,742
Stock-based compensation			21,428	20,132
(Gain) loss on investments and other assets			(1,947)	922
Deferred income taxes			(16,346)	(689)
Other			690	7,829
Changes in operating assets and liabilities:
Trade receivables			(50,672)	(21,752)
Inventories			19,865	66,456
Accounts payable			5,460	(38,475)
Accrued liabilities and income taxes			(19,434)	(61,359)
Prepaid expenses and other assets			(1,633)	13,678
Net cash provided by operating activities			206,999	313,140
INVESTING ACTIVITIES
Acquisitions of businesses, net of cash acquired			0	(198,810)
Purchases of property, plant, and equipment			(50,065)	(63,166)
Net proceeds from sale of property, plant and equipment, and other			8,931	597
Net cash used in investing activities			(41,134)	(261,379)
FINANCING ACTIVITIES
Repayments of other debts			(2,037)	(2,027)
Payments of term loan			(3,750)	(5,625)
Net proceeds related to stock-based award activities			5,037	6,481
Repurchases of common stock			(40,862)	0
Cash dividends paid			(49,687)	(45,973)
Net cash used in financing activities			(91,299)	(47,144)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash			(396)	(7,965)
Increase (decrease) in cash, cash equivalents, and restricted cash			74,170	(3,348)
Cash, cash equivalents, and restricted cash at beginning of period			557,123	564,939
Cash, cash equivalents, and restricted cash at end of period	631,293	561,591	631,293	561,591
Reconciliation of cash and cash equivalents:
Cash and cash equivalents	629,670	560,056	629,670	560,056
Restricted cash included in other long-term assets	1,623	1,535	1,623	1,535
Cash paid during the period for interest	$ 10,500	$ 11,900	30,094	33,177
Capital expenditures, not yet paid			$ 9,217	$ 9,780

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Addl. Paid in Capital	Treasury Stock	Accum. Other Comp. Income (Loss)	Retained Earnings	Non-controlling Interest
Balance at the beginning at Dec. 31, 2022	$ 2,211,378	$ 261	$ 974,097	$ (252,866)	$ (95,764)	$ 1,585,466	$ 184
Increase (Decrease) in Stockholders' Equity
Net income	88,745					88,745
Other comprehensive (loss) income, net of tax	13,283				13,283
Stock-based compensation	3,730		3,730
Non-controlling interest	0					(66)	66
Withheld shares on restricted share units for withholding taxes	(18)			(18)
Stock options exercised	5,238		5,238
Cash dividends paid	(14,880)					(14,880)
Balance at the end at Apr. 01, 2023	2,307,476	261	983,065	(252,884)	(82,481)	1,659,265	250
Balance at the beginning at Dec. 31, 2022	2,211,378	261	974,097	(252,866)	(95,764)	1,585,466	184
Increase (Decrease) in Stockholders' Equity
Net income	216,604
Other comprehensive (loss) income, net of tax	(3,762)
Balance at the end at Sep. 30, 2023	2,404,859	262	1,007,033	(259,191)	(99,526)	1,755,936	345
Balance at the beginning at Apr. 01, 2023	2,307,476	261	983,065	(252,884)	(82,481)	1,659,265	250
Increase (Decrease) in Stockholders' Equity
Net income	70,071					70,071
Other comprehensive (loss) income, net of tax	(14,911)				(14,911)
Stock-based compensation	12,545		12,545
Non-controlling interest	0					(45)	45
Withheld shares on restricted share units for withholding taxes	(5,999)			(5,999)
Stock options exercised	2,979		2,979
Cash dividends paid	(14,910)					(14,910)
Balance at the end at Jul. 01, 2023	2,357,251	261	998,589	(258,883)	(97,392)	1,714,381	295
Increase (Decrease) in Stockholders' Equity
Net income	57,788					57,788
Other comprehensive (loss) income, net of tax	(2,134)				(2,134)
Stock-based compensation	3,857		3,857
Non-controlling interest	0					(50)	50
Withheld shares on restricted share units for withholding taxes	(308)			(308)
Stock options exercised	4,588	1	4,587
Cash dividends paid	(16,183)					(16,183)
Balance at the end at Sep. 30, 2023	2,404,859	262	1,007,033	(259,191)	(99,526)	1,755,936	345
Balance at the beginning at Dec. 30, 2023	2,480,481	262	1,012,325	(259,263)	(55,817)	1,782,662	312
Increase (Decrease) in Stockholders' Equity
Net income	48,452					48,452
Other comprehensive (loss) income, net of tax	(30,291)				(30,291)
Stock-based compensation	3,617		3,617
Non-controlling interest	0					2	(2)
Withheld shares on restricted share units for withholding taxes	(4)			(4)
Stock options exercised	1,369		1,369
Repurchases of common stock	(16,131)			(16,131)
Cash dividends paid	(16,200)					(16,200)
Balance at the end at Mar. 30, 2024	2,471,293	262	1,017,311	(275,398)	(86,108)	1,814,916	310
Balance at the beginning at Dec. 30, 2023	2,480,481	262	1,012,325	(259,263)	(55,817)	1,782,662	312
Increase (Decrease) in Stockholders' Equity
Net income	151,976
Other comprehensive (loss) income, net of tax	5,035
Balance at the end at Sep. 28, 2024	2,573,100	262	1,043,736	(305,259)	(50,782)	1,884,823	320
Balance at the beginning at Mar. 30, 2024	2,471,293	262	1,017,311	(275,398)	(86,108)	1,814,916	310
Increase (Decrease) in Stockholders' Equity
Net income	45,466					45,466
Other comprehensive (loss) income, net of tax	(21,067)				(21,067)
Stock-based compensation	13,271		13,271
Non-controlling interest	0					(48)	48
Withheld shares on restricted share units for withholding taxes	(4,754)			(4,754)
Stock options exercised	2,392		2,392
Repurchases of common stock	(24,984)			(24,984)
Cash dividends paid	(16,130)					(16,130)
Balance at the end at Jun. 29, 2024	2,465,487	262	1,032,974	(305,136)	(107,175)	1,844,204	358
Increase (Decrease) in Stockholders' Equity
Net income	58,058					58,058
Other comprehensive (loss) income, net of tax	56,393				56,393
Stock-based compensation	4,540		4,540
Non-controlling interest	(120)					(82)	(38)
Withheld shares on restricted share units for withholding taxes	(188)			(188)
Stock options exercised	6,222		6,222
Excise tax adjustment on stock options exercised	65			65
Cash dividends paid	(17,357)					(17,357)
Balance at the end at Sep. 28, 2024	$ 2,573,100	$ 262	$ 1,043,736	$ (305,259)	$ (50,782)	$ 1,884,823	$ 320

CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parentheticals) - $ / shares	3 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023
Statement of Stockholders' Equity [Abstract]
Cash dividends paid, per share (in dollars per share)	$ 0.70	$ 0.65	$ 0.65	$ 0.65	$ 0.60	$ 0.60

Summary of Significant Accounting Policies and Other Information

9 Months Ended

Sep. 28, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies and Other Information

Nature of Operations

Basis of Presentation

Revenue Recognition

Revenue Disaggregation

The following tables disaggregate the Company’s revenue by primary business units for the three and nine months ended September 28, 2024 and September 30, 2023:


	Three Months Ended September 28, 2024								Nine Months Ended September 28, 2024
(in thousands)	Electronics Segment		Transportation Segment		Industrial Segment		Total		Electronics Segment		Transportation Segment		Industrial Segment		Total
Electronics – Semiconductor	$	151,954	$	—	$	—	$	151,954	$	469,389	$	—	$	—	$	469,389
Electronics – Passive Products and Sensors	152,234		—		—		152,234		431,543		—		—		431,543
Commercial Vehicle Products	—		82,077		—		82,077		—		242,350		—		242,350
Passenger Car Products	—		71,299		—		71,299		—		210,597		—		210,597
Automotive Sensors	—		18,005		—		18,005		—		57,764		—		57,764
Industrial Products	—		—		91,821		91,821		—		—		249,620		249,620
Total	$	304,188	$	171,381	$	91,821	$	567,390	$	900,932	$	510,711	$	249,620	$	1,661,263


	Three Months Ended September 30, 2023								Nine Months Ended September 30, 2023
(in thousands)	Electronics Segment		Transportation Segment		Industrial Segment		Total		Electronics Segment		Transportation Segment		Industrial Segment		Total
Electronics – Semiconductor	$	191,523	$	—	$	—	$	191,523	$	598,813	$	—	$	—	$	598,813
Electronics – Passive Products and Sensors	152,410		—		—		152,410		453,860		—		—		453,860
Commercial Vehicle Products	—		81,290		—		81,290		—		248,765		—		248,765
Passenger Car Products	—		72,524		—		72,524		—		200,104		—		200,104
Automotive Sensors	—		23,205		—		23,205		—		66,839		—		66,839
Industrial Products	—		—		86,119		86,119						260,469		260,469
Total	$	343,933	$	177,019	$	86,119	$	607,071	$	1,052,673	$	515,708	$	260,469	$	1,828,850

See Note 14, Segment Information, for net sales by segment and country.

Revenue Recognition

Revenue and Billing

Ship and Debit Program

Return to Stock

Volume Rebates

Cash, Cash Equivalents, and Restricted Cash


(in thousands)	September 28, 2024		December 30, 2023
Cash and cash equivalents	$	629,670	$	555,513

Restricted cash included in other long-term assets	1,623		1,610
Total cash, cash equivalents, and restricted cash	$	631,293	$	557,123

Recently Adopted Accounting Standards

Recently Issued Accounting Standards

Acquisitions

9 Months Ended

Sep. 28, 2024

Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]

Acquisitions

Dortmund Fab

Western Automation

The following table summarizes the final purchase price allocation of the fair value of assets acquired and liabilities assumed in the Western Automation acquisition:


(in thousands)	Purchase Price Allocation
Total purchase consideration:
Cash, net of cash acquired	$	158,260
Allocation of consideration to assets acquired and liabilities assumed:
Trade receivables	3,359
Inventories	3,678
Other current assets	718
Property, plant, and equipment	1,328
Intangible assets	68,000
Goodwill	93,937
Other long-term assets	573
Current liabilities	(4,335)

Other long-term liabilities	(8,998)
	$	158,260

Pro Forma Results


(in thousands, except per share amounts)	Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Net sales	$	607,071	$	1,830,736
Income before income taxes	75,071		271,165
Net income	57,591		217,930
Net income per share — basic	2.31		8.77
Net income per share — diluted	2.29		8.68

Pro forma results presented above primarily reflect the following adjustments:


(in thousands)	Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Amortization (a)	$	—	$	(479)
Transaction costs (b)	(224)		1,203
Income tax benefit (expense) of above items	28		(91)

(a) The amortization adjustment for the nine months ended September 30, 2023 primarily reflects incremental amortization resulting from the measurement of intangibles at their fair values.

(b) The transaction cost adjustments reflect the reversal of certain legal and professional fees from the three and nine months ended September 30, 2023.

Inventories

9 Months Ended

Sep. 28, 2024

Inventory Disclosure [Abstract]

Inventories

The components of inventories at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Raw materials	$	202,119	$	201,984
Work in process	137,713		137,688
Finished goods	178,570		195,886
Inventory reserves	(64,621)		(60,951)
Total	$	453,781	$	474,607

Property, Plant, and Equipment

9 Months Ended

Sep. 28, 2024

Property, Plant and Equipment [Abstract]

Property, Plant, and Equipment

The components of net property, plant, and equipment at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Land and land improvements	$	18,442	$	22,212
Building and building improvements	200,856		202,764
Machinery and equipment	896,045		859,060

Accumulated depreciation	(633,751)		(590,883)
Total	$	481,592	$	493,153

Goodwill and Other Intangible Assets

9 Months Ended

Sep. 28, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

Changes in the carrying value of goodwill by segment for the nine months ended September 28, 2024 are as follows:


(in thousands)	Electronics		Transportation		Industrial		Total
Net goodwill as of December 30, 2023
Gross goodwill as of December 30, 2023	$	936,505	$	237,115	$	179,117	$	1,352,737
Accumulated impairment losses as of December 30, 2023	—		(34,004)		(8,735)		(42,739)
Total	936,505		203,111		170,382		1,309,998
Changes during 2024:


Foreign currency translation adjustments	3,581		1,881		2,288		7,750
Net goodwill as of September 28, 2024
Gross goodwill as of September 28, 2024	940,086		239,777		181,237		1,361,100
Accumulated impairment losses as of September 28, 2024	—		(34,785)		(8,567)		(43,352)
Total	$	940,086	$	204,992	$	172,670	$	1,317,748

The components of other intangible assets as of September 28, 2024 and December 30, 2023 are as follows:


	As of September 28, 2024
(in thousands)	Gross Carrying Value		Accumulated Amortization		Net Book Value
Land use rights	$	16,731	$	2,989	$	13,742
Patents, licenses, and software	277,011		181,471		95,540
Distribution network	42,106		42,106		—
Customer relationships, trademarks, and tradenames	691,519		239,807		451,712

Total	$	1,027,367	$	466,373	$	560,994


	December 30, 2023
(in thousands)	Gross Carrying Value		Accumulated Amortization		Net Book Value
Land use rights	$	17,621	$	2,786	$	14,835
Patents, licenses, and software	275,337		163,799		111,538
Distribution network	43,210		43,210		—
Customer relationships, trademarks, and tradenames	689,244		209,481		479,763
Total	$	1,025,412	$	419,276	$	606,136

Estimated annual amortization expense related to intangible assets with definite lives as of September 28, 2024 is as follows:


(in thousands)	Amount
Remainder of 2024	$	16,000
2025	63,795
2026	52,706
2027	50,597
2028	49,970
2029 and thereafter	327,926
Total	$	560,994

Accrued Liabilities

9 Months Ended

Sep. 28, 2024

Payables and Accruals [Abstract]

Accrued Liabilities

The components of accrued liabilities as of September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Employee-related liabilities	$	71,614	$	72,635
Current lease liability	10,162		12,110
Other non-income taxes	7,597		7,855
Interest	5,311		6,387
Professional services	4,938		5,282
Other customer reserves	4,815		5,998
Restructuring liability	4,461		2,141
Current hedge liability	4,307		—
Deferred revenue	1,614		2,198
Current benefit liability	1,482		1,482
Other	36,471		33,126
Total	$	152,772	$	149,214

Restructuring, Impairment, and Other Charges

9 Months Ended

Sep. 28, 2024

Restructuring and Related Activities [Abstract]

Restructuring, Impairment, and Other Charges

The Company recorded restructuring, impairment, and other charges for the three and nine months ended September 28, 2024 and September 30, 2023 as follows:


	Three Months Ended September 28, 2024								Nine Months Ended September 28, 2024
(in thousands)	Electronics		Transportation		Industrial		Total		Electronics		Transportation		Industrial		Total
Employee terminations	$	1,140	$	404	$	1	$	1,545	$	6,245	$	1,995	$	417	$	8,657
Other restructuring charges	95		187		13		295		234		474		31		739
Total restructuring charges	1,235		591		14		1,840		6,479		2,469		448		9,396
Impairment	—		—		—		—		—		933		—		933

Total	$	1,235	$	591	$	14	$	1,840	$	6,479	$	3,402	$	448	$	10,329


	Three Months Ended September 30, 2023								Nine Months Ended September 30, 2023
(in thousands)	Electronics		Transportation		Industrial		Total		Electronics		Transportation		Industrial		Total
Employee terminations	$	1,174	$	1,665	$	293	$	3,132	$	2,833	$	2,598	$	887	$	6,318
Other restructuring charges	64		138		364		566		321		822		1,018		2,161
Total restructuring charges	1,238		1,803		657		3,698		3,154		3,420		1,905		8,479
Impairment	—		—		818		818		—		3,870		872		4,742

Total	$	1,238	$	1,803	$	1,475	$	4,516	$	3,154	$	7,290	$	2,777	$	13,221

2024

2023

Debt

9 Months Ended

Sep. 28, 2024

Debt Disclosure [Abstract]

Debt

The carrying amounts of debt at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Revolving credit facility	$	100,000	$	100,000
Term loan	285,000		288,750

Euro Senior Notes, Series B due 2028	106,106		105,246

U.S. Senior Notes, Series B due 2027	100,000		100,000
U.S. Senior Notes, Series A due 2025	50,000		50,000
U.S. Senior Notes, Series B due 2030	125,000		125,000
U.S. Senior Notes, due 2032	100,000		100,000
Other	4,670		6,709
Unamortized debt issuance costs	(3,028)		(3,770)
Total debt	867,748		871,935
Less: Current maturities	(67,799)		(14,020)
Total long-term debt	$	799,949	$	857,915

Revolving Credit Facility and Term Loan

As of September 28, 2024, the effective interest rate on unhedged portion of the outstanding borrowings under the credit facility was 6.60%, and 4.13% on the hedged portion.

Senior Notes

Fair Value of Assets and Liabilities

9 Months Ended

Sep. 28, 2024

Fair Value Disclosures [Abstract]

Fair Value of Assets and Liabilities

Level 1—Valuations based on unadjusted quoted prices for identical assets or liabilities in active markets;

Level 3—Valuations based upon one or more significant unobservable inputs

There were no transfers in or out of Level 1, Level 2 and Level 3 during the period.

Following is a description of the valuation methodologies used for instruments measured at fair value and their classification in the valuation hierarchy.

Cash Equivalents

Investments in Equity Securities

Derivatives Designated as Hedging Instruments

Zero Cost Collar Agreement

Interest Rate Swap

Derivatives Not Designated as Hedging Instruments

The Company does not enter into derivative financial instruments for trading purposes.


(in thousands)	Condensed Consolidated Balance Sheet Classification	September 28, 2024		December 30, 2023
Derivatives designated as hedging instruments
Interest rate swap agreement:
Designated as cash flow hedge	Prepaid expenses and other current assets	$	1,792	$	3,712
	Other long-term assets	$	713	$	2,140
Zero cost collar agreement:
Designated as cash flow hedge	Prepaid expenses and other current assets	$	60	$	—
	Accrued liabilities	$	4,307	$	—
	Other long-term liabilities	$	1	$	—


		Three Months Ended				Nine Months Ended
(in thousands)	Classification of (Gains) Losses Recognized in the Condensed Consolidated Statements of Net Income	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Derivatives designated as cash flow hedges
Interest rate swap agreement	Interest expense	$	(1,282)	$	(1,252)	$	(3,850)	$	(3,246)
Zero cost collar agreement	Cost of sales	$	409	$	—	$	409	$	—
Derivatives not designated as hedging instruments
Foreign exchange forward contract	Foreign exchange loss	$	—	$	4,310	$	—	$	3,226


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Derivatives designated as cash flow hedges
Interest rate swap agreement	$	5,857	$	(2,034)	$	3,346	$	(2,817)
Zero cost collar agreement	$	4,003	$	—	$	4,003	$	—

Mutual Funds

The following table presents assets measured at fair value by classification within the fair value hierarchy as of September 28, 2024:


	Fair Value Measurements Using
(in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents	$	552,735	$	—	$	—	$	552,735
Investments in equity securities	12,888		—		—		12,888
Mutual funds	23,479		—		—		23,479
Total	$	589,102	$	—	$	—	$	589,102

The following table presents assets measured at fair value by classification within the fair value hierarchy as of December 30, 2023:


	Fair Value Measurements Using
(in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents	$	415,788	$	—	$	—	$	415,788
Investments in equity securities	10,832		—		—		10,832
Mutual funds	20,148		—		—		20,148
Total	$	446,768	$	—	$	—	$	446,768


	September 28, 2024				December 30, 2023
(in thousands)	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value

Euro Senior Notes, Series B due 2028	$	106,106	$	99,141	$	105,246	$	96,532

USD Senior Notes, Series B due 2027	100,000		97,967		100,000		96,127
USD Senior Notes, Series A due 2025	50,000		49,735		50,000		49,070
USD Senior Notes, Series B due 2030	125,000		118,596		125,000		115,687
USD Senior Notes, due 2032	100,000		95,229		100,000		93,228

Benefit Plans

9 Months Ended

Sep. 28, 2024

Retirement Benefits [Abstract]

Benefit Plans


	For the Three Months Ended				For the Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Components of net periodic benefit cost:
Service cost	$	753	$	700	$	2,318	$	2,087
Interest cost	961		961		2,931		2,850
Expected return on plan assets	(527)		(470)		(1,555)		(1,409)
Amortization of prior service and net actuarial loss	47		12		139		34
Net periodic benefit cost	$	1,234	$	1,203	$	3,833	$	3,562

The Company expects to make approximately $2.2 million of contributions to the plans and pay $2.1 million of benefits directly in 2024.

Other Comprehensive Income (Loss)

9 Months Ended

Sep. 28, 2024

Equity [Abstract]

Other Comprehensive Income (Loss)

Changes in other comprehensive income (loss) by component were as follows:


(in thousands)	Three Months Ended September 28, 2024						Three Months Ended September 30, 2023
	Pre-tax		Tax		Net of Tax		Pre-tax		Tax		Net of Tax
Defined benefit pension plan and other adjustments	$	205	$	(14)	$	191	$	(3)	$	—	$	(3)
Cash flow hedges	(9,860)		1,563		(8,297)		2,034		(488)		1,546
Foreign currency translation adjustments (a)	66,331		(1,832)		64,499		(4,301)		624		(3,677)
Total change in other comprehensive income (loss)	$	56,676	$	(283)	$	56,393	$	(2,270)	$	136	$	(2,134)

(in thousands)	Nine Months Ended September 28, 2024						Nine Months Ended September 30, 2023
	Pre-tax		Tax		Net of Tax		Pre-tax		Tax		Net of Tax
Defined benefit pension plan and other adjustments	$	901	$	(40)	$	861	$	(125)	$	(31)	$	(156)
Cash flow hedges	(7,349)		960		(6,389)		2,817		(676)		2,141
Foreign currency translation adjustments (a)	11,619		(1,056)		10,563		(6,098)		351		(5,747)
Total change in other comprehensive income (loss)	$	5,171	$	(136)	$	5,035	$	(3,406)	$	(356)	$	(3,762)

The following tables set forth the changes in accumulated other comprehensive income (loss) by component for the nine months ended September 28, 2024 and September 30, 2023:


(in thousands)	Defined benefit pension plan and other adjustments		Cash flow hedges		Foreign currency translation adjustment		Accumulated other comprehensive loss
Balance at December 30, 2023	$	(7,613)	$	4,448	$	(52,652)	$	(55,817)

Activity in the period	861		(6,389)		10,563		5,035
Balance at September 28, 2024	$	(6,752)	$	(1,941)	$	(42,089)	$	(50,782)


(in thousands)	Defined benefit pension plan and other adjustments		Cash flow hedges		Foreign currency translation adjustment		Accumulated other comprehensive loss
Balance at December 31, 2022	$	(2,193)	$	6,596	$	(100,167)	$	(95,764)

Activity in the period	(156)		2,141		(5,747)		(3,762)
Balance at September 30, 2023	$	(2,349)	$	8,737	$	(105,914)	$	(99,526)

Amounts reclassified from accumulated other comprehensive income (loss) to earnings for the three and nine months ended September 28, 2024 and September 30, 2023 were as follows:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Pension and postemployment plans:
Amortization of prior service and net actuarial loss (gain)	$	323	$	(11)	$	1,026	$	(33)

The Company recognizes the amortization of prior service costs in Other income, net within the Condensed Consolidated Statements of Net Income.

Income Taxes	9 Months Ended
Income Taxes	Sep. 28, 2024
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The effective tax rate for the three and nine months ended September 28, 2024 was 25.3% and 21.9%, respectively, compared to the effective tax rate for the three and nine months ended September 30, 2023 of 23.3% and 19.7%, respectively. The effective tax rates for 2024 are higher than the effective tax rates for the comparable 2023 periods primarily due to decreases in the income earned in lower tax jurisdictions in 2024 as compared to 2023. The effective tax rates for the three months ended September 28, 2024 and September 30, 2023 are higher than the statutory tax rate primarily due to the impact of foreign exchange losses with no related tax benefit. Additionally, for the 2024 period, the effective tax rate was also higher due to the proportion of pre-tax income that is earned in higher tax jurisdictions. The effective tax rate for the nine months ended September 28, 2024 is higher than the statutory tax rate primarily due to the proportion of pre-tax income that is earned in higher tax jurisdictions, partially offset by previously unrecognized tax benefits recognized in the first quarter due to the lapse in the statute of limitations. The effective tax rate for the nine months ended September 30, 2023 is lower than the statutory tax rate primarily due to income earned in lower tax jurisdictions.

Earnings Per Share

9 Months Ended

Sep. 28, 2024

Earnings Per Share [Abstract]

Earnings Per Share

The following table sets forth the computation of basic and diluted earnings per share:


	Three Months Ended				Nine Months Ended
(in thousands, except per share amounts)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Numerator:
Net income as reported	$	58,058	$	57,788	$	151,976	$	216,604

Denominator:
Weighted average shares outstanding
Basic	24,796		24,893		24,822		24,838
Effect of dilutive securities	229		250		218		262
Diluted	25,025		25,143		25,040		25,100

Earnings Per Share:
Basic earnings per share	$	2.34	$	2.32	$	6.12	$	8.72
Diluted earnings per share	$	2.32	$	2.30	$	6.07	$	8.63

Share Repurchase Program

Segment Information

9 Months Ended

Sep. 28, 2024

Segment Reporting [Abstract]

Segment Information

Segment information is summarized as follows:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Net sales
Electronics	$	304,188	$	343,933	$	900,932	$	1,052,673
Transportation	171,381		177,019		510,711		515,708
Industrial	91,821		86,119		249,620		260,469
Total net sales	$	567,390	$	607,071	$	1,661,263	$	1,828,850

Depreciation and amortization
Electronics	$	20,045	$	19,623	$	59,656	59,219
Transportation	9,084		10,193		26,827		32,547
Industrial	4,041		4,093		11,960		11,517

Total depreciation and amortization	$	33,170	$	33,909	$	98,443	$	103,283

Operating income (loss)
Electronics	$	48,891	$	77,022	$	132,859	$	247,028
Transportation	23,485		9,694		54,925		26,015
Industrial	17,711		13,201		32,054		45,450
Other (a)	(2,266)		(6,272)		(11,559)		(22,154)
Total operating income	87,821		93,645		208,279		296,339
Interest expense	9,772		10,101		29,358		29,803
Foreign exchange loss	9,630		11,776		4,273		8,697
Other income, net	(9,297)		(3,527)		(19,916)		(11,810)
Income before income taxes	$	77,716	$	75,295	$	194,564	$	269,649

The Company’s net sales by country were as follows, classified according to the country where the customer is located:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Net sales
United States	$	211,940	$	217,904	$	604,198	$	635,892
China	133,051		138,393		379,730		415,430
Other countries (a)	222,399		250,774		677,335		777,528
Total net sales	$	567,390	$	607,071	$	1,661,263	$	1,828,850

The Company’s long-lived assets represent net property, plant, and equipment, and are classified according to the country where the asset is located were as follows:


(in thousands)	September 28, 2024		December 30, 2023
Long-lived assets
United States	$	67,491	$	73,126
China	137,813		139,736
Mexico	93,057		102,218
Germany	56,578		47,217
Philippines	68,620		73,217
Other countries	58,033		57,639
Total long-lived assets	$	481,592	$	493,153

The Company’s additions to long-lived assets by country were as follows:


	Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023
Additions to long-lived assets
United States	$	9,591	$	7,407
China	10,681		22,558
Mexico	8,875		11,339
Germany	12,160		6,534
Philippines	3,025		5,245
Other countries	5,759		8,138
Total additions to long-lived assets	$	50,091	$	61,221

(a)Each country included in other countries is less than 10% of net sales.

Commitments and Contingencies	9 Months Ended
Commitments and Contingencies	Sep. 28, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Off-Balance Sheet Arrangements As of September 28, 2024, the Company did not have any off-balance sheet arrangements, as defined under SEC rules. Specifically, the Company was not liable for guarantees of indebtedness owed by third parties, the Company was not directly liable for the debt of any unconsolidated entity and the Company did not have any retained or contingent interest in assets. The Company does not participate in transactions that generate relationships with unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities. Product Warranty Liabilities The company's policy is to accrue for warranty claims when a loss is both probable and estimable. Liabilities for warranty claims have historically not been material and in limited instances, customers may make claims for costs they incurred or other damages related to a claim. The Company carries insurance for potential product liability claims at coverage levels based on the Company's prior claims experience. This coverage is subject to deductibles, and various terms and conditions. The Company cannot assure that the level of coverage will be sufficient to cover every possible claim that can arise in its businesses, now or in the future, or that such coverage always will be available should the Company, now or in the future, wish to extend, increase or otherwise adjust its insurance. The Company has been notified by one of its customers of a product recall potentially due to certain fuses provided by Littelfuse and incorporated in such products. The Company is currently working with its customer to investigate the cause and level of responsibility for this recall. The Company has determined pursuant to ASC 450, "Contingencies", that a loss is reasonably possible. However, the Company continues to evaluate this matter and the ultimate costs of the recall and range of the potential loss cannot be determined at this time. Accordingly, no accrual has been made yet for this matter. Factors that will impact the amount of such losses include the per vehicle cost of fuse replacement, the determination of the relative liability among the customer, the Company, and any relevant third parties, as well as actual insurance recoveries. Environmental Remediation Liabilities The company's operations and facilities are subject to U.S. and non-U.S. laws and regulations governing the protection of the environment and its employees, including those governing air emissions, chemical usage, water discharges, the management and disposal of hazardous substances and wastes, and the cleanup of contaminated sites. The Company could incur significant costs, including cleanup costs, fines, civil or criminal sanctions, or third-party property damage or personal injury claims, in the event of violations or liabilities under these laws and regulations, or non-compliance with the environmental permits required at its facilities. Potentially significant expenditures could be required in order to comply with environmental laws that may be adopted or imposed in the future. The Company is, however, not aware of any threatened or pending material environmental investigations, lawsuits, or claims involving the Company or its operations. Legal Proceedings In the ordinary course of business, the Company may be involved in a number of claims and litigation matters. While it is not feasible to predict the outcome of these matters, based upon the Company's experience and current information known, the Company does not expect the outcome of these matters, either individually or in the aggregate, to have a material adverse effect on its results of operations, financial position, and/or cash flows. The Company accounts for litigation and claims losses in accordance with ASC 450, "Contingencies" where loss contingency provisions are recognized for probable and estimable losses at the Company's best estimate of a loss or, when a best estimate cannot be made, at its estimate of the minimum loss. These estimates require the application of considerable judgment and are refined each accounting period as additional information becomes known. If the Company is initially unable to develop a best estimate of loss and therefore the minimum amount, which could be an immaterial amount, is recognized. As information becomes known, either the minimum loss amount is increased, or a best estimate can be made, resulting in additional loss provisions. A best estimate may be changed when events result in an expectation different than previously expected. Pending Litigation and Claims There are no material pending litigation or claims outstanding as of September 28, 2024.

Related Party Transactions

9 Months Ended

Sep. 28, 2024

Related Party Transactions

The Company has equity ownership in various investments that are accounted for under the equity method. The following is a description of the investments and related party transactions.

Powersem GmbH: The Company owns 45% of the outstanding equity of Powersem GmbH (“Powersem”), a module manufacturer based in Germany.

EB-Tech Co., Ltd.: The Company owns approximately 19% of the outstanding equity of EB Tech Co., Ltd. (“EB Tech”), a company with expertise in radiation technology based in South Korea.


	Three Months Ended September 28, 2024						Three Months Ended September 30, 2023
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Sales to related party	$	0.3	$	—	$	—	$	0.5	$	—	$	—
Purchase material/service from related party	0.6		0.2		0.6		1.2		0.1		2.0

	Nine Months Ended September 28, 2024						Nine Months Ended September 30, 2023
(in millions)	Powersem		EB-Tech		ATEC		Powersem		EB Tech		ATEC
Sales to related party	$	1.2	$	—	$	—	$	1.7	$	—	$	—
Purchase material/service from related party	3.0		0.6		3.5		3.3		0.3		7.6

	September 28, 2024						December 30, 2023
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Accounts receivable balance	$	0.1	$	—	$	—	$	—	$	—	$	—
Accounts payable balance	$	0.5	$	—	$	0.1	$	0.5	$	—	$	1.0

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Sep. 28, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net income	$ 58,058	$ 45,466	$ 48,452	$ 57,788	$ 70,071	$ 88,745	$ 151,976	$ 216,604

Insider Trading Arrangements

3 Months Ended

9 Months Ended

Sep. 28, 2024

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

Name

Title

Action

Date Adopted

Expiration Date

Aggregate # of securities to be Sold

Matthew J. Cole (1)

Senior Vice President, eMobility and Corporate Strategy

Adoption

9/12/2024

3/31/2025

1,500

Rule 10b5-1 Arrangement Adopted

false

Non-Rule 10b5-1 Arrangement Adopted

false

Non-Rule 10b5-1 Arrangement Terminated

false

Expiration Date

April 27, 2025

Matthew J. Cole [Member]

Trading Arrangements, by Individual

Name

Matthew J. Cole

Title

Senior Vice President, eMobility and Corporate Strategy

Rule 10b5-1 Arrangement Adopted

true

Adoption Date

September 12, 2024

Arrangement Duration

200 days

Aggregate Available

1,500

Summary of Significant Accounting Policies and Other Information (Policies)	9 Months Ended
	Sep. 28, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The Company’s accompanying unaudited Condensed Consolidated Financial Statements have been prepared in accordance with U.S. Generally Accepted Accounting Principles (“GAAP”) for interim financial information, the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, certain information and disclosures normally included in the consolidated balance sheets, statements of net income and comprehensive income, statements of cash flows, and statements of stockholders' equity prepared in conformity with U.S. GAAP have been condensed or omitted as permitted by such rules and regulations, although the Company believes that the disclosures made are adequate to make the information not misleading. They have been prepared in accordance with accounting policies described in the Company’s Annual Report on Form 10-K for the fiscal year ended December 30, 2023, which should be read in conjunction with the disclosures therein. In the opinion of management, all adjustments considered necessary for a fair presentation have been included and are of a normal, recurring nature. Operating results for interim periods are not necessarily indicative of annual operating results.
Revenue Recognition	Revenue Recognition The Company recognizes revenue on product sales in the period in which the Company satisfies its performance obligation and control of the product is transferred to the customer. The Company’s sales arrangements with customers are predominately short term in nature and generally provide for transfer of control at the time of shipment as this is the point at which title and risk of loss of the product transfers to the customer. At the end of each period, for those shipments where title to the products and the risk of loss and rewards of ownership do not transfer until the product has been received by the customer, the Company adjusts revenues and cost of sales for the delay between the time that the products are shipped and when they are received by the customer. The amount of revenue recorded reflects the consideration to which the Company expects to be entitled in exchange for goods and may include adjustments for customer allowances, rebates and price adjustments. The Company’s distribution channels are primarily through direct sales and independent third-party distributors. The Company has elected the practical expedient under Accounting Standards Codification ("ASC") 340-40-25-4 to expense commissions when incurred as the amortization period of the commission asset the Company would have otherwise recognized is less than one year. Revenue and Billing The Company generally accepts orders from customers through receipt of purchase orders or electronic data interchange based on written sales agreements and purchasing contracts. Contract pricing and selling agreement terms are based on market factors, costs, and competition. Pricing is often negotiated as an adjustment (premium or discount) from the Company’s published price lists. The customer is invoiced when the Company’s products are shipped to them in accordance with the terms of the sales agreement. As the Company’s standard payment terms are less than one year, the Company elected the practical expedient under ASC 606-10-32-18 to not assess whether a contract has a significant financing component. The Company also elected the practical expedient provided in ASC 606-10-25-18B to treat all product shipping and handling activities as fulfillment activities, and therefore recognize the gross revenue associated with the contract, inclusive of any shipping and handling revenue. Ship and Debit Program Some of the terms of the Company’s sales agreements and normal business conditions provide customers (distributors) the ability to receive price adjustments on products previously shipped and invoiced. This practice is common in the industry and is referred to as a “ship and debit” program. This program allows the distributors to debit the Company for the difference between the distributors’ contracted price and a lower price for specific transactions. Under certain circumstances (usually in a competitive situation or large volume opportunity), a distributor will request authorization for pricing allowances to reduce its price. When the Company approves such a reduction, the distributor is authorized to “debit” its account for the difference between the contracted price and the lower approved price. The Company establishes reserves for this program based on historical activity, distributor inventory levels and actual authorizations for the debit and recognizes these debits as a reduction of revenue. Return to Stock The Company has a return to stock policy whereby certain customers, with prior authorization from the Company's management, can return previously purchased goods for full or partial credit. The Company establishes an estimated allowance for these returns based on historical activity. Sales revenue and cost of sales are reduced to anticipate estimated returns. Volume Rebates The Company offers volume-based sales incentives to certain customers to encourage greater product sales. If customers achieve their specific quarterly or annual sales targets, they are entitled to rebates. The Company estimates the projected amount of rebates that will be achieved by the customer and recognizes this estimated cost as a reduction to revenue as products are sold.
Recently Adopted Accounting Standards and Recently Issued Accounting Standards	Recently Adopted Accounting Standards In March 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Updates ("ASU") ASU No. 2023-01, "Leases (Topic 842): Common Control Arrangements." The standard requires that leasehold improvements associated with common control leases be: 1) Amortized by the lessee over the useful life of the leasehold improvements to the common control group (regardless of the lease term) as long as the lessee controls the use of the underlying asset (the leased asset) through a lease. However, if the lessor obtained the right to control the use of the underlying asset through a lease with another entity not within the same common control group, the amortization period may not exceed the amortization period of the common control group. 2) Accounted for as a transfer between entities under common control through an adjustment to equity (or net assets for not-for-profit entities) if, and when, the lessee no longer controls the use of the underlying asset. Additionally, those leasehold improvements are subject to the impairment guidance in Topic 360, Property, Plant, and Equipment. This standard is effective for fiscal years beginning after December 15, 2023 including interim periods within those fiscal years. The adoption of ASU 2023-01 did not have a material impact on the Company's Condensed Consolidated Financial Statements. Recently Issued Accounting Standards In March 2024, the Securities and Exchange Commission ("SEC") issued a final rule that requires registrants to provide climate disclosures in annual reports and registration statements. The climate-related final rule requires disclosures in the footnotes to the financial statements, including: 1) specified financial statement effects of severe weather events and other natural conditions, 2) certain carbon offsets and renewable energy credits or certificates if used as a material component of a registrant's plans to achieve its disclosed climate-related targets or goals, 3) material impacts on financial estimates and assumptions in the financial statements if they would materially impacted by risks and uncertainties associated with severe weather events and other natural conditions, previously disclosed climate-related targets, and transition plans. The financial statement disclosure requirements are effective beginning with annual reports for the fiscal year beginning in calendar year 2025 for the Company as a large accelerated filer. These disclosures will be subject to existing audit requirement for financial statements. On April 4, 2024, the SEC chose to stay its climate disclosure rules pending judicial review. The adoption of this rule will increase the Company's disclosures in its Consolidated Financial Statements. The Company is currently evaluating and is in the process of performing its initial assessment of the potential impact on its Condensed Consolidated Financial Statements. In December 2023, the FASB issued ASU No. 2023-09, "Income Taxes (Topic 740): Improvements to Income Tax Disclosures." The amendments in this update provide more transparency about income tax information through improvements to the income tax disclosure primarily related to the income tax rate reconciliation and income taxes paid information. These requirements include: (1) consistent categories and greater disaggregation of information in the rate reconciliation and (2) income taxes paid disaggregated by jurisdiction. The other amendments in this update improve the effectiveness and comparability of disclosures by (3) adding disclosures of pretax income (or loss) and income tax expense (or benefit), and (4) removing disclosures that are no longer considered cost beneficial or relevant. The guidance is effective for fiscal years beginning after December 15, 2024 with early adoption permitted. The adoption of this guidance will modify the Company's disclosures in its Condensed Consolidated Financial Statements. In November 2023, the FASB issued ASU No. 2023-07, "Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures." The amendments in this update require additional detailed and enhanced information about reportable segments' expense, including significant segment expenses and other segment items that bridge segment revenue, significant expenses to segment profit or loss. The ASU also requires disclosure of the title and position of the Chief Operating Decision Maker (“CODM”) on an annual basis as well as an explanation of how the CODM uses the reported measures and other disclosures. The amendments in this update do not change how a public entity identifies its operating segments, aggregates those operating segments, or applies the quantitative thresholds to determine its reportable segments. The guidance is effective for fiscal years beginning after December 15, 2023 and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. The adoption of this guidance will modify the Company's disclosures in its Condensed Consolidated Financial Statements. In October 2023, the FASB issued ASU No. 2023-06, "Disclosure Improvements." The amendments in this update represent changes to clarify or improve the disclosure or presentation requirements of a variety of Topics in the ASC. The Company may be affected by one or more of those amendments. The amendments in this ASU should be applied prospectively and will not be effective until June 30, 2027. The Company is currently evaluating the potential effects of these amendments on its Condensed Consolidated Financial Statements.

Summary of Significant Accounting Policies and Other Information (Tables)

9 Months Ended

Sep. 28, 2024

Accounting Policies [Abstract]

Schedule of Revenue Disaggregation

The following tables disaggregate the Company’s revenue by primary business units for the three and nine months ended September 28, 2024 and September 30, 2023:


	Three Months Ended September 28, 2024								Nine Months Ended September 28, 2024
(in thousands)	Electronics Segment		Transportation Segment		Industrial Segment		Total		Electronics Segment		Transportation Segment		Industrial Segment		Total
Electronics – Semiconductor	$	151,954	$	—	$	—	$	151,954	$	469,389	$	—	$	—	$	469,389
Electronics – Passive Products and Sensors	152,234		—		—		152,234		431,543		—		—		431,543
Commercial Vehicle Products	—		82,077		—		82,077		—		242,350		—		242,350
Passenger Car Products	—		71,299		—		71,299		—		210,597		—		210,597
Automotive Sensors	—		18,005		—		18,005		—		57,764		—		57,764
Industrial Products	—		—		91,821		91,821		—		—		249,620		249,620
Total	$	304,188	$	171,381	$	91,821	$	567,390	$	900,932	$	510,711	$	249,620	$	1,661,263


	Three Months Ended September 30, 2023								Nine Months Ended September 30, 2023
(in thousands)	Electronics Segment		Transportation Segment		Industrial Segment		Total		Electronics Segment		Transportation Segment		Industrial Segment		Total
Electronics – Semiconductor	$	191,523	$	—	$	—	$	191,523	$	598,813	$	—	$	—	$	598,813
Electronics – Passive Products and Sensors	152,410		—		—		152,410		453,860		—		—		453,860
Commercial Vehicle Products	—		81,290		—		81,290		—		248,765		—		248,765
Passenger Car Products	—		72,524		—		72,524		—		200,104		—		200,104
Automotive Sensors	—		23,205		—		23,205		—		66,839		—		66,839
Industrial Products	—		—		86,119		86,119						260,469		260,469
Total	$	343,933	$	177,019	$	86,119	$	607,071	$	1,052,673	$	515,708	$	260,469	$	1,828,850

Schedule of Cash and Cash Equivalents


(in thousands)	September 28, 2024		December 30, 2023
Cash and cash equivalents	$	629,670	$	555,513

Restricted cash included in other long-term assets	1,623		1,610
Total cash, cash equivalents, and restricted cash	$	631,293	$	557,123

Schedule of Restricted Cash and Cash Equivalents


(in thousands)	September 28, 2024		December 30, 2023
Cash and cash equivalents	$	629,670	$	555,513

Restricted cash included in other long-term assets	1,623		1,610
Total cash, cash equivalents, and restricted cash	$	631,293	$	557,123

Acquisitions (Tables)

9 Months Ended

Sep. 28, 2024

Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed

The following table summarizes the final purchase price allocation of the fair value of assets acquired and liabilities assumed in the Western Automation acquisition:


(in thousands)	Purchase Price Allocation
Total purchase consideration:
Cash, net of cash acquired	$	158,260
Allocation of consideration to assets acquired and liabilities assumed:
Trade receivables	3,359
Inventories	3,678
Other current assets	718
Property, plant, and equipment	1,328
Intangible assets	68,000
Goodwill	93,937
Other long-term assets	573
Current liabilities	(4,335)

Other long-term liabilities	(8,998)
	$	158,260

Schedule of Business Acquisition, Pro Forma Information


(in thousands, except per share amounts)	Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Net sales	$	607,071	$	1,830,736
Income before income taxes	75,071		271,165
Net income	57,591		217,930
Net income per share — basic	2.31		8.77
Net income per share — diluted	2.29		8.68

Schedule of Business Acquisition, Pro Forma Information, Non-recurring Adjustments

Pro forma results presented above primarily reflect the following adjustments:


(in thousands)	Three Months Ended September 30, 2023		Nine Months Ended September 30, 2023
Amortization (a)	$	—	$	(479)
Transaction costs (b)	(224)		1,203
Income tax benefit (expense) of above items	28		(91)

(a) The amortization adjustment for the nine months ended September 30, 2023 primarily reflects incremental amortization resulting from the measurement of intangibles at their fair values.

(b) The transaction cost adjustments reflect the reversal of certain legal and professional fees from the three and nine months ended September 30, 2023.

Inventories (Tables)

9 Months Ended

Sep. 28, 2024

Inventory Disclosure [Abstract]

Schedule of Inventories

The components of inventories at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Raw materials	$	202,119	$	201,984
Work in process	137,713		137,688
Finished goods	178,570		195,886
Inventory reserves	(64,621)		(60,951)
Total	$	453,781	$	474,607

Property, Plant, and Equipment (Tables)

9 Months Ended

Sep. 28, 2024

Property, Plant and Equipment [Abstract]

Schedule of Components of Net Property, Plant, and Equipment

The components of net property, plant, and equipment at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Land and land improvements	$	18,442	$	22,212
Building and building improvements	200,856		202,764
Machinery and equipment	896,045		859,060

Accumulated depreciation	(633,751)		(590,883)
Total	$	481,592	$	493,153

Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Sep. 28, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying value of goodwill by segment for the nine months ended September 28, 2024 are as follows:


(in thousands)	Electronics		Transportation		Industrial		Total
Net goodwill as of December 30, 2023
Gross goodwill as of December 30, 2023	$	936,505	$	237,115	$	179,117	$	1,352,737
Accumulated impairment losses as of December 30, 2023	—		(34,004)		(8,735)		(42,739)
Total	936,505		203,111		170,382		1,309,998
Changes during 2024:


Foreign currency translation adjustments	3,581		1,881		2,288		7,750
Net goodwill as of September 28, 2024
Gross goodwill as of September 28, 2024	940,086		239,777		181,237		1,361,100
Accumulated impairment losses as of September 28, 2024	—		(34,785)		(8,567)		(43,352)
Total	$	940,086	$	204,992	$	172,670	$	1,317,748

Schedule of Finite-Lived Intangible Assets

The components of other intangible assets as of September 28, 2024 and December 30, 2023 are as follows:


	As of September 28, 2024
(in thousands)	Gross Carrying Value		Accumulated Amortization		Net Book Value
Land use rights	$	16,731	$	2,989	$	13,742
Patents, licenses, and software	277,011		181,471		95,540
Distribution network	42,106		42,106		—
Customer relationships, trademarks, and tradenames	691,519		239,807		451,712

Total	$	1,027,367	$	466,373	$	560,994


	December 30, 2023
(in thousands)	Gross Carrying Value		Accumulated Amortization		Net Book Value
Land use rights	$	17,621	$	2,786	$	14,835
Patents, licenses, and software	275,337		163,799		111,538
Distribution network	43,210		43,210		—
Customer relationships, trademarks, and tradenames	689,244		209,481		479,763
Total	$	1,025,412	$	419,276	$	606,136

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense

Estimated annual amortization expense related to intangible assets with definite lives as of September 28, 2024 is as follows:


(in thousands)	Amount
Remainder of 2024	$	16,000
2025	63,795
2026	52,706
2027	50,597
2028	49,970
2029 and thereafter	327,926
Total	$	560,994

Accrued Liabilities (Tables)

9 Months Ended

Sep. 28, 2024

Payables and Accruals [Abstract]

Schedule of Components of Accrued Liabilities

The components of accrued liabilities as of September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Employee-related liabilities	$	71,614	$	72,635
Current lease liability	10,162		12,110
Other non-income taxes	7,597		7,855
Interest	5,311		6,387
Professional services	4,938		5,282
Other customer reserves	4,815		5,998
Restructuring liability	4,461		2,141
Current hedge liability	4,307		—
Deferred revenue	1,614		2,198
Current benefit liability	1,482		1,482
Other	36,471		33,126
Total	$	152,772	$	149,214

Restructuring, Impairment, and Other Charges (Tables)

9 Months Ended

Sep. 28, 2024

Restructuring and Related Activities [Abstract]

Schedule of Restructuring, Impairment and Other Charges

The Company recorded restructuring, impairment, and other charges for the three and nine months ended September 28, 2024 and September 30, 2023 as follows:


	Three Months Ended September 28, 2024								Nine Months Ended September 28, 2024
(in thousands)	Electronics		Transportation		Industrial		Total		Electronics		Transportation		Industrial		Total
Employee terminations	$	1,140	$	404	$	1	$	1,545	$	6,245	$	1,995	$	417	$	8,657
Other restructuring charges	95		187		13		295		234		474		31		739
Total restructuring charges	1,235		591		14		1,840		6,479		2,469		448		9,396
Impairment	—		—		—		—		—		933		—		933

Total	$	1,235	$	591	$	14	$	1,840	$	6,479	$	3,402	$	448	$	10,329


	Three Months Ended September 30, 2023								Nine Months Ended September 30, 2023
(in thousands)	Electronics		Transportation		Industrial		Total		Electronics		Transportation		Industrial		Total
Employee terminations	$	1,174	$	1,665	$	293	$	3,132	$	2,833	$	2,598	$	887	$	6,318
Other restructuring charges	64		138		364		566		321		822		1,018		2,161
Total restructuring charges	1,238		1,803		657		3,698		3,154		3,420		1,905		8,479
Impairment	—		—		818		818		—		3,870		872		4,742

Total	$	1,238	$	1,803	$	1,475	$	4,516	$	3,154	$	7,290	$	2,777	$	13,221

Debt (Tables)

9 Months Ended

Sep. 28, 2024

Debt Disclosure [Abstract]

Schedule of Long-Term Debt Instruments

The carrying amounts of debt at September 28, 2024 and December 30, 2023 are as follows:


(in thousands)	September 28, 2024		December 30, 2023
Revolving credit facility	$	100,000	$	100,000
Term loan	285,000		288,750

Euro Senior Notes, Series B due 2028	106,106		105,246

U.S. Senior Notes, Series B due 2027	100,000		100,000
U.S. Senior Notes, Series A due 2025	50,000		50,000
U.S. Senior Notes, Series B due 2030	125,000		125,000
U.S. Senior Notes, due 2032	100,000		100,000
Other	4,670		6,709
Unamortized debt issuance costs	(3,028)		(3,770)
Total debt	867,748		871,935
Less: Current maturities	(67,799)		(14,020)
Total long-term debt	$	799,949	$	857,915

Fair Value of Assets and Liabilities (Tables)

9 Months Ended

Sep. 28, 2024

Fair Value Disclosures [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value


(in thousands)	Condensed Consolidated Balance Sheet Classification	September 28, 2024		December 30, 2023
Derivatives designated as hedging instruments
Interest rate swap agreement:
Designated as cash flow hedge	Prepaid expenses and other current assets	$	1,792	$	3,712
	Other long-term assets	$	713	$	2,140
Zero cost collar agreement:
Designated as cash flow hedge	Prepaid expenses and other current assets	$	60	$	—
	Accrued liabilities	$	4,307	$	—
	Other long-term liabilities	$	1	$	—

Schedule of Derivative Instruments Pre-tax Gains


		Three Months Ended				Nine Months Ended
(in thousands)	Classification of (Gains) Losses Recognized in the Condensed Consolidated Statements of Net Income	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Derivatives designated as cash flow hedges
Interest rate swap agreement	Interest expense	$	(1,282)	$	(1,252)	$	(3,850)	$	(3,246)
Zero cost collar agreement	Cost of sales	$	409	$	—	$	409	$	—
Derivatives not designated as hedging instruments
Foreign exchange forward contract	Foreign exchange loss	$	—	$	4,310	$	—	$	3,226


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Derivatives designated as cash flow hedges
Interest rate swap agreement	$	5,857	$	(2,034)	$	3,346	$	(2,817)
Zero cost collar agreement	$	4,003	$	—	$	4,003	$	—

Schedule of Fair Value, Assets Measured on Recurring Basis

The following table presents assets measured at fair value by classification within the fair value hierarchy as of September 28, 2024:


	Fair Value Measurements Using
(in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents	$	552,735	$	—	$	—	$	552,735
Investments in equity securities	12,888		—		—		12,888
Mutual funds	23,479		—		—		23,479
Total	$	589,102	$	—	$	—	$	589,102

The following table presents assets measured at fair value by classification within the fair value hierarchy as of December 30, 2023:


	Fair Value Measurements Using
(in thousands)	Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total
Cash equivalents	$	415,788	$	—	$	—	$	415,788
Investments in equity securities	10,832		—		—		10,832
Mutual funds	20,148		—		—		20,148
Total	$	446,768	$	—	$	—	$	446,768

Schedule of Fair Value, by Balance Sheet Grouping


	September 28, 2024				December 30, 2023
(in thousands)	Carrying Value		Estimated Fair Value		Carrying Value		Estimated Fair Value

Euro Senior Notes, Series B due 2028	$	106,106	$	99,141	$	105,246	$	96,532

USD Senior Notes, Series B due 2027	100,000		97,967		100,000		96,127
USD Senior Notes, Series A due 2025	50,000		49,735		50,000		49,070
USD Senior Notes, Series B due 2030	125,000		118,596		125,000		115,687
USD Senior Notes, due 2032	100,000		95,229		100,000		93,228

Benefit Plans (Tables)

9 Months Ended

Sep. 28, 2024

Retirement Benefits [Abstract]

Schedule of Net Benefit Costs

The components of net periodic benefit cost for the three and nine months ended September 28, 2024 and September 30, 2023 were as follows:


	For the Three Months Ended				For the Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Components of net periodic benefit cost:
Service cost	$	753	$	700	$	2,318	$	2,087
Interest cost	961		961		2,931		2,850
Expected return on plan assets	(527)		(470)		(1,555)		(1,409)
Amortization of prior service and net actuarial loss	47		12		139		34
Net periodic benefit cost	$	1,234	$	1,203	$	3,833	$	3,562

Other Comprehensive Income (Loss) (Tables)

9 Months Ended

Sep. 28, 2024

Equity [Abstract]

Schedule of Components of Comprehensive Income (Loss)

Changes in other comprehensive income (loss) by component were as follows:


(in thousands)	Three Months Ended September 28, 2024						Three Months Ended September 30, 2023
	Pre-tax		Tax		Net of Tax		Pre-tax		Tax		Net of Tax
Defined benefit pension plan and other adjustments	$	205	$	(14)	$	191	$	(3)	$	—	$	(3)
Cash flow hedges	(9,860)		1,563		(8,297)		2,034		(488)		1,546
Foreign currency translation adjustments (a)	66,331		(1,832)		64,499		(4,301)		624		(3,677)
Total change in other comprehensive income (loss)	$	56,676	$	(283)	$	56,393	$	(2,270)	$	136	$	(2,134)

(in thousands)	Nine Months Ended September 28, 2024						Nine Months Ended September 30, 2023
	Pre-tax		Tax		Net of Tax		Pre-tax		Tax		Net of Tax
Defined benefit pension plan and other adjustments	$	901	$	(40)	$	861	$	(125)	$	(31)	$	(156)
Cash flow hedges	(7,349)		960		(6,389)		2,817		(676)		2,141
Foreign currency translation adjustments (a)	11,619		(1,056)		10,563		(6,098)		351		(5,747)
Total change in other comprehensive income (loss)	$	5,171	$	(136)	$	5,035	$	(3,406)	$	(356)	$	(3,762)

Schedule of Accumulated Other Comprehensive (Loss) Income

The following tables set forth the changes in accumulated other comprehensive income (loss) by component for the nine months ended September 28, 2024 and September 30, 2023:


(in thousands)	Defined benefit pension plan and other adjustments		Cash flow hedges		Foreign currency translation adjustment		Accumulated other comprehensive loss
Balance at December 30, 2023	$	(7,613)	$	4,448	$	(52,652)	$	(55,817)

Activity in the period	861		(6,389)		10,563		5,035
Balance at September 28, 2024	$	(6,752)	$	(1,941)	$	(42,089)	$	(50,782)


(in thousands)	Defined benefit pension plan and other adjustments		Cash flow hedges		Foreign currency translation adjustment		Accumulated other comprehensive loss
Balance at December 31, 2022	$	(2,193)	$	6,596	$	(100,167)	$	(95,764)

Activity in the period	(156)		2,141		(5,747)		(3,762)
Balance at September 30, 2023	$	(2,349)	$	8,737	$	(105,914)	$	(99,526)

Amounts reclassified from accumulated other comprehensive income (loss) to earnings for the three and nine months ended September 28, 2024 and September 30, 2023 were as follows:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Pension and postemployment plans:
Amortization of prior service and net actuarial loss (gain)	$	323	$	(11)	$	1,026	$	(33)

Earnings Per Share (Tables)

9 Months Ended

Sep. 28, 2024

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table sets forth the computation of basic and diluted earnings per share:


	Three Months Ended				Nine Months Ended
(in thousands, except per share amounts)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Numerator:
Net income as reported	$	58,058	$	57,788	$	151,976	$	216,604

Denominator:
Weighted average shares outstanding
Basic	24,796		24,893		24,822		24,838
Effect of dilutive securities	229		250		218		262
Diluted	25,025		25,143		25,040		25,100

Earnings Per Share:
Basic earnings per share	$	2.34	$	2.32	$	6.12	$	8.72
Diluted earnings per share	$	2.32	$	2.30	$	6.07	$	8.63

Segment Information (Tables)

9 Months Ended

Sep. 28, 2024

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment

Segment information is summarized as follows:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Net sales
Electronics	$	304,188	$	343,933	$	900,932	$	1,052,673
Transportation	171,381		177,019		510,711		515,708
Industrial	91,821		86,119		249,620		260,469
Total net sales	$	567,390	$	607,071	$	1,661,263	$	1,828,850

Depreciation and amortization
Electronics	$	20,045	$	19,623	$	59,656	59,219
Transportation	9,084		10,193		26,827		32,547
Industrial	4,041		4,093		11,960		11,517

Total depreciation and amortization	$	33,170	$	33,909	$	98,443	$	103,283

Operating income (loss)
Electronics	$	48,891	$	77,022	$	132,859	$	247,028
Transportation	23,485		9,694		54,925		26,015
Industrial	17,711		13,201		32,054		45,450
Other (a)	(2,266)		(6,272)		(11,559)		(22,154)
Total operating income	87,821		93,645		208,279		296,339
Interest expense	9,772		10,101		29,358		29,803
Foreign exchange loss	9,630		11,776		4,273		8,697
Other income, net	(9,297)		(3,527)		(19,916)		(11,810)
Income before income taxes	$	77,716	$	75,295	$	194,564	$	269,649

Schedule of Disclosure on Geographic Areas, Long-Lived Assets in Individual Foreign Countries by Country

The Company’s net sales by country were as follows, classified according to the country where the customer is located:


	Three Months Ended				Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023		September 28, 2024		September 30, 2023
Net sales
United States	$	211,940	$	217,904	$	604,198	$	635,892
China	133,051		138,393		379,730		415,430
Other countries (a)	222,399		250,774		677,335		777,528
Total net sales	$	567,390	$	607,071	$	1,661,263	$	1,828,850

The Company’s long-lived assets represent net property, plant, and equipment, and are classified according to the country where the asset is located were as follows:


(in thousands)	September 28, 2024		December 30, 2023
Long-lived assets
United States	$	67,491	$	73,126
China	137,813		139,736
Mexico	93,057		102,218
Germany	56,578		47,217
Philippines	68,620		73,217
Other countries	58,033		57,639
Total long-lived assets	$	481,592	$	493,153

The Company’s additions to long-lived assets by country were as follows:


	Nine Months Ended
(in thousands)	September 28, 2024		September 30, 2023
Additions to long-lived assets
United States	$	9,591	$	7,407
China	10,681		22,558
Mexico	8,875		11,339
Germany	12,160		6,534
Philippines	3,025		5,245
Other countries	5,759		8,138
Total additions to long-lived assets	$	50,091	$	61,221

(a)Each country included in other countries is less than 10% of net sales.

Related Party Transactions (Tables)

9 Months Ended

Sep. 28, 2024

Schedule of Related Party Transactions


	Three Months Ended September 28, 2024						Three Months Ended September 30, 2023
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Sales to related party	$	0.3	$	—	$	—	$	0.5	$	—	$	—
Purchase material/service from related party	0.6		0.2		0.6		1.2		0.1		2.0

	Nine Months Ended September 28, 2024						Nine Months Ended September 30, 2023
(in millions)	Powersem		EB-Tech		ATEC		Powersem		EB Tech		ATEC
Sales to related party	$	1.2	$	—	$	—	$	1.7	$	—	$	—
Purchase material/service from related party	3.0		0.6		3.5		3.3		0.3		7.6

	September 28, 2024						December 30, 2023
(in millions)	Powersem		EB Tech		ATEC		Powersem		EB Tech		ATEC
Accounts receivable balance	$	0.1	$	—	$	—	$	—	$	—	$	—
Accounts payable balance	$	0.5	$	—	$	0.1	$	0.5	$	—	$	1.0

Summary of Significant Accounting Policies and Other Information - Narrative (Details) customer in Thousands, associate in Thousands	9 Months Ended
	Sep. 28, 2024 country customer associate
Accounting Policies [Abstract]
Countries where product is used (more than) (country) \| country	20
Global associates (associate) \| associate	16
Number of customers (over) \| customer	100

Summary of Significant Accounting Policies and Other Information - Revenue Disaggregation (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Disaggregation of Revenue
Net sales	$ 567,390	$ 607,071	$ 1,661,263	$ 1,828,850
Electronics Segment
Disaggregation of Revenue
Net sales	304,188	343,933	900,932	1,052,673
Transportation Segment
Disaggregation of Revenue
Net sales	171,381	177,019	510,711	515,708
Industrial Segment
Disaggregation of Revenue
Net sales	91,821	86,119	249,620	260,469
Electronics – Semiconductor
Disaggregation of Revenue
Net sales	151,954	191,523	469,389	598,813
Electronics – Semiconductor \| Electronics Segment
Disaggregation of Revenue
Net sales	151,954	191,523	469,389	598,813
Electronics – Semiconductor \| Transportation Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Electronics – Semiconductor \| Industrial Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Electronics – Passive Products and Sensors
Disaggregation of Revenue
Net sales	152,234	152,410	431,543	453,860
Electronics – Passive Products and Sensors \| Electronics Segment
Disaggregation of Revenue
Net sales	152,234	152,410	431,543	453,860
Electronics – Passive Products and Sensors \| Transportation Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Electronics – Passive Products and Sensors \| Industrial Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Commercial Vehicle Products
Disaggregation of Revenue
Net sales	82,077	81,290	242,350	248,765
Commercial Vehicle Products \| Electronics Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Commercial Vehicle Products \| Transportation Segment
Disaggregation of Revenue
Net sales	82,077	81,290	242,350	248,765
Commercial Vehicle Products \| Industrial Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Passenger Car Products
Disaggregation of Revenue
Net sales	71,299	72,524	210,597	200,104
Passenger Car Products \| Electronics Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Passenger Car Products \| Transportation Segment
Disaggregation of Revenue
Net sales	71,299	72,524	210,597	200,104
Passenger Car Products \| Industrial Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Automotive Sensors
Disaggregation of Revenue
Net sales	18,005	23,205	57,764	66,839
Automotive Sensors \| Electronics Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Automotive Sensors \| Transportation Segment
Disaggregation of Revenue
Net sales	18,005	23,205	57,764	66,839
Automotive Sensors \| Industrial Segment
Disaggregation of Revenue
Net sales	0	0	0	0
Industrial Products
Disaggregation of Revenue
Net sales	91,821	86,119	249,620	260,469
Industrial Products \| Electronics Segment
Disaggregation of Revenue
Net sales	0	0	0
Industrial Products \| Transportation Segment
Disaggregation of Revenue
Net sales	0	0	0
Industrial Products \| Industrial Segment
Disaggregation of Revenue
Net sales	$ 91,821	$ 86,119	$ 249,620	$ 260,469

Summary of Significant Accounting Policies and Other Information - Cash and cash equivalents (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Accounting Policies [Abstract]
Cash and cash equivalents	$ 629,670	$ 555,513	$ 560,056
Restricted cash included in other long-term assets	1,623	1,610	1,535
Total cash, cash equivalents, and restricted cash	$ 631,293	$ 557,123	$ 561,591	$ 564,939

Acquisitions - Narrative (Details) $ in Thousands, € in Millions		3 Months Ended		9 Months Ended		12 Months Ended	30 Months Ended
	Feb. 03, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2023 EUR (€)	Sep. 28, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 31, 2025 EUR (€)	Dec. 31, 2025 EUR (€)
Business Acquisition
Cash, net of cash acquired				$ 0	$ 198,810
Dortmund Fab
Business Acquisition
Cash		$ 40,500	€ 37.2
Dortmund Fab \| Forecast
Business Acquisition
Purchase price \| €							€ 93.0
Cash \| €						€ 56.0
Western Automation
Business Acquisition
Cash	$ 162,000
Annualized sales	25,000
Cash, net of cash acquired	$ 158,260
Acquisition related costs					$ 1,200

Acquisitions - Preliminary Price Allocation (Details) - USD ($) $ in Thousands		9 Months Ended
	Feb. 03, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 30, 2023
Total purchase consideration:
Cash, net of cash acquired		$ 0	$ 198,810
Allocation of consideration to assets acquired and liabilities assumed:
Goodwill		$ 1,317,748		$ 1,309,998
Western Automation
Total purchase consideration:
Cash, net of cash acquired	$ 158,260
Allocation of consideration to assets acquired and liabilities assumed:
Trade receivables	3,359
Inventories	3,678
Other current assets	718
Property, plant, and equipment	1,328
Intangible assets	68,000
Goodwill	93,937
Other long-term assets	573
Current liabilities	(4,335)
Other long-term liabilities	(8,998)
Assets acquired and liabilities assumed	$ 158,260

Acquisitions - Business Acquisition Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]
Net sales	$ 607,071	$ 1,830,736
Income before income taxes	75,071	271,165
Net income	$ 57,591	$ 217,930
Net income per share — basic (in dollars per share)	$ 2.31	$ 8.77
Net income per share — diluted (in dollars per share)	$ 2.29	$ 8.68

Acquisitions - Pro Forma Information Adjustments (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	$ 57,591	$ 217,930
Amortization
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	0	(479)
Transaction costs
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	(224)	1,203
Income tax benefit (expense) of above items
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment
Net income	$ 28	$ (91)

Inventories - Components of Inventories (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Inventory Disclosure [Abstract]
Raw materials	$ 202,119	$ 201,984
Work in process	137,713	137,688
Finished goods	178,570	195,886
Inventory reserves	(64,621)	(60,951)
Total	$ 453,781	$ 474,607

Property, Plant, and Equipment - Components of Net Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Property, Plant and Equipment
Accumulated depreciation	$ (633,751)	$ (590,883)
Total	481,592	493,153
Land and land improvements
Property, Plant and Equipment
Property, plant, and equipment, gross	18,442	22,212
Building and building improvements
Property, Plant and Equipment
Property, plant, and equipment, gross	200,856	202,764
Machinery and equipment
Property, Plant and Equipment
Property, plant, and equipment, gross	$ 896,045	$ 859,060

Property, Plant, and Equipment - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Property, Plant and Equipment [Abstract]
Depreciation expenses	$ 17,300	$ 17,900	$ 51,025	$ 53,510

Goodwill and Other Intangible Assets - Amounts for Goodwill and Changes in Carrying Value by Operating Segment (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 28, 2024	Dec. 30, 2023
Goodwill
Gross goodwill	$ 1,361,100	$ 1,352,737
Accumulated impairment losses	(43,352)	(42,739)
Net goodwill	1,317,748	1,309,998
Foreign currency translation adjustments	7,750
Electronics
Goodwill
Gross goodwill	940,086	936,505
Accumulated impairment losses	0	0
Net goodwill	940,086	936,505
Foreign currency translation adjustments	3,581
Transportation
Goodwill
Gross goodwill	239,777	237,115
Accumulated impairment losses	(34,785)	(34,004)
Net goodwill	204,992	203,111
Foreign currency translation adjustments	1,881
Industrial
Goodwill
Gross goodwill	181,237	179,117
Accumulated impairment losses	(8,567)	(8,735)
Net goodwill	172,670	$ 170,382
Foreign currency translation adjustments	$ 2,288

Goodwill and Other Intangible Assets - Details of Other Intangible Assets and Related Future Amortization Expense (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Finite-Lived Intangible Assets
Gross Carrying Value	$ 1,027,367	$ 1,025,412
Accumulated Amortization	466,373	419,276
Net Book Value	560,994	606,136
Land use rights
Finite-Lived Intangible Assets
Gross Carrying Value	16,731	17,621
Accumulated Amortization	2,989	2,786
Net Book Value	13,742	14,835
Patents, licenses, and software
Finite-Lived Intangible Assets
Gross Carrying Value	277,011	275,337
Accumulated Amortization	181,471	163,799
Net Book Value	95,540	111,538
Distribution network
Finite-Lived Intangible Assets
Gross Carrying Value	42,106	43,210
Accumulated Amortization	42,106	43,210
Net Book Value	0	0
Customer relationships, trademarks, and tradenames
Finite-Lived Intangible Assets
Gross Carrying Value	691,519	689,244
Accumulated Amortization	239,807	209,481
Net Book Value	$ 451,712	$ 479,763

Goodwill and Other Intangible Assets - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangibles	$ 15,864	$ 16,022	$ 47,418	$ 49,773

Goodwill and Other Intangible Assets - Estimated Amortization Expense Related to Intangible Assets with Definite Lives (Details) $ in Thousands	Sep. 28, 2024 USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity
Remainder of 2024	$ 16,000
2025	63,795
2026	52,706
2027	50,597
2028	49,970
2029 and thereafter	327,926
Total	$ 560,994

Accrued Liabilities (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Payables and Accruals [Abstract]
Employee-related liabilities	$ 71,614	$ 72,635
Current lease liability	10,162	12,110
Other non-income taxes	7,597	7,855
Interest	5,311	6,387
Professional services	4,938	5,282
Other customer reserves	4,815	5,998
Restructuring liability	4,461	2,141
Current hedge liability	4,307	0
Deferred revenue	1,614	2,198
Current benefit liability	1,482	1,482
Other	36,471	33,126
Total	$ 152,772	$ 149,214

Restructuring, Impairment, and Other Charges - Schedule of Restructuring, Impairment (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 28, 2024	Mar. 30, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Restructuring Cost and Reserve
Total restructuring charges	$ 1,840		$ 3,698	$ 9,396	$ 8,479
Impairment	0		818	933	4,742
Total	1,840		4,516	10,329	13,221
Electronics
Restructuring Cost and Reserve
Total restructuring charges	1,235		1,238	6,479	3,154
Impairment	0		0	0	0
Total	1,235		1,238	6,479	3,154
Transportation
Restructuring Cost and Reserve
Total restructuring charges	591		1,803	2,469	3,420
Impairment	0	$ 900	0	933	3,870
Total	591		1,803	3,402	7,290
Industrial
Restructuring Cost and Reserve
Total restructuring charges	14		657	448	1,905
Impairment	0		818	0	872
Total	14		1,475	448	2,777
Employee Terminations
Restructuring Cost and Reserve
Total restructuring charges	1,545		3,132	8,657	6,318
Employee Terminations \| Electronics
Restructuring Cost and Reserve
Total restructuring charges	1,140		1,174	6,245	2,833
Employee Terminations \| Transportation
Restructuring Cost and Reserve
Total restructuring charges	404		1,665	1,995	2,598
Employee Terminations \| Industrial
Restructuring Cost and Reserve
Total restructuring charges	1		293	417	887
Other Restructuring Charges
Restructuring Cost and Reserve
Total restructuring charges	295		566	739	2,161
Other Restructuring Charges \| Electronics
Restructuring Cost and Reserve
Total restructuring charges	95		64	234	321
Other Restructuring Charges \| Transportation
Restructuring Cost and Reserve
Total restructuring charges	187		138	474	822
Other Restructuring Charges \| Industrial
Restructuring Cost and Reserve
Total restructuring charges	$ 13		$ 364	$ 31	$ 1,018

Restructuring, Impairment, and Other Charges - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 28, 2024	Mar. 30, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 30, 2023
Restructuring Cost and Reserve
Restructuring charges	$ 1,840		$ 3,698	$ 9,396	$ 8,479
Impairment	0		818	933	4,742
Restructuring reserves	4,500			4,500		$ 2,100
Transportation
Restructuring Cost and Reserve
Restructuring charges	591		1,803	2,469	3,420
Impairment	$ 0	$ 900	$ 0	$ 933	$ 3,870

Debt - Carrying Amounts of Long-term Debt (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023	Jun. 30, 2022
Debt Instrument
Unamortized debt issuance costs	$ (3,028)	$ (3,770)
Total debt	867,748	871,935
Less: Current maturities	(67,799)	(14,020)
Total long-term debt	799,949	857,915
Revolving credit facility
Debt Instrument
Long-term debt, gross	100,000	100,000
Term loan
Debt Instrument
Long-term debt, gross	285,000	288,750	$ 300,000
Senior Notes \| Euro Senior Notes, Series B due 2028
Debt Instrument
Long-term debt, gross	106,106	105,246
Senior Notes \| U.S. Senior Notes, Series B due 2027
Debt Instrument
Long-term debt, gross	100,000	100,000
Senior Notes \| U.S. Senior Notes, Series A due 2025
Debt Instrument
Long-term debt, gross	50,000	50,000
Senior Notes \| U.S. Senior Notes, Series B due 2030
Debt Instrument
Long-term debt, gross	125,000	125,000
Senior Notes \| U.S. Senior Notes, due 2032
Debt Instrument
Long-term debt, gross	100,000	100,000
Other
Debt Instrument
Long-term debt, gross	$ 4,670	$ 6,709

Debt - Narrative (Details)			3 Months Ended			9 Months Ended
Debt - Narrative (Details)	Jun. 30, 2022 USD ($)	Dec. 08, 2016 EUR (€)	Sep. 28, 2024 USD ($)	Sep. 30, 2023 USD ($)	Apr. 02, 2022 USD ($)	Sep. 28, 2024 USD ($)	Sep. 30, 2023 USD ($)	Dec. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Jul. 18, 2022 USD ($)	May 12, 2022 USD ($)	Jan. 16, 2018 USD ($)	Nov. 15, 2017 USD ($) series	Feb. 15, 2017 USD ($)	Dec. 08, 2016 USD ($) series	Dec. 08, 2016 EUR (€) series
Debt Instrument
Repayments of term loan						$ 3,750,000	$ 5,625,000
Letter of credit outstanding (less than)			$ 100,000			100,000
Cash paid during the period for interest			$ 10,500,000	$ 11,900,000		$ 30,094,000	$ 33,177,000
Unhedged Portion \| Credit Agreement
Debt Instrument
Effective interest rate (as a percent)			6.60%			6.60%
Hedged Portion \| Credit Agreement
Debt Instrument
Effective interest rate (as a percent)			4.13%			4.13%
Interest rate swap agreement \| Designated as cash flow hedge \| Designated as Hedging Instrument
Debt Instrument
Notional amount of derivatives											$ 200,000,000
Term loan
Debt Instrument
Maximum borrowing capacity, credit facility	$ 300,000,000
Loan minimum increments	25,000,000
Long-term debt, gross	$ 300,000,000		$ 285,000,000			$ 285,000,000		$ 288,750,000
Repayments of term loan						3,800,000
Term loan \| Period One
Debt Instrument
Quarterly repayment of line of credit									$ 1,900,000
Term loan \| Period Two
Debt Instrument
Quarterly repayment of line of credit									$ 3,800,000
Line of Credit
Debt Instrument
Long-term debt, gross			100,000,000			100,000,000		100,000,000
Remaining borrowing capacity			599,900,000			599,900,000
Line of Credit \| SOFR
Debt Instrument
Basis spread on variable rate adjustment (as a percent)	0.10%
Line of Credit \| Minimum
Debt Instrument
Commitment fee (as a percent)	0.10%
Line of Credit \| Minimum \| SOFR
Debt Instrument
Basis spread on variable rate (as a percent)	1.00%
Line of Credit \| Minimum \| Base Rate
Debt Instrument
Basis spread on variable rate (as a percent)	0.00%
Line of Credit \| Maximum
Debt Instrument
Commitment fee (as a percent)	0.175%
Line of Credit \| Maximum \| SOFR
Debt Instrument
Basis spread on variable rate (as a percent)	1.75%
Line of Credit \| Maximum \| Base Rate
Debt Instrument
Basis spread on variable rate (as a percent)	0.75%
Senior Notes \| Euro Senior Notes, Series A and B
Debt Instrument
Face amount of debt \| €																€ 212,000,000
Number of series \| series															2	2
Senior Notes \| Euro Senior Notes, Series A due 2023
Debt Instrument
Face amount of debt \| €																€ 117,000,000
Stated interest rate (as a percent)															1.14%	1.14%
Repayments of debt \| €		€ 117,000,000
Senior Notes \| Euro Senior Notes, Series B due 2028
Debt Instrument
Long-term debt, gross			106,106,000			106,106,000		105,246,000
Face amount of debt \| €																€ 95,000,000
Stated interest rate (as a percent)															1.83%	1.83%
Senior Notes \| U.S. Senior Notes, Series A and B
Debt Instrument
Face amount of debt															$ 125,000,000
Number of series \| series															2	2
Senior Notes \| U.S. Senior Notes, Series A
Debt Instrument
Face amount of debt														$ 25,000,000
Stated interest rate (as a percent)														3.03%
Repayments of debt					$ 25,000,000
Senior Notes \| U.S. Senior Notes, Series B
Debt Instrument
Face amount of debt														$ 100,000,000
Stated interest rate (as a percent)														3.74%
Senior Notes \| U.S. Senior Notes A and B due 2025 and 2030
Debt Instrument
Face amount of debt													$ 175,000,000
Number of series \| series													2
Senior Notes \| U.S. Senior Notes, Series A due 2025
Debt Instrument
Long-term debt, gross			50,000,000			50,000,000		50,000,000
Face amount of debt												$ 50,000,000
Stated interest rate (as a percent)												3.48%
Senior Notes \| U.S. Senior Notes, Series B due 2030
Debt Instrument
Long-term debt, gross			$ 125,000,000			$ 125,000,000		$ 125,000,000
Face amount of debt												$ 125,000,000
Stated interest rate (as a percent)												3.78%
Senior Notes \| U.S Senior Notes, due 2032
Debt Instrument
Face amount of debt										$ 100,000,000
Stated interest rate (as a percent)										4.33%

Fair Value of Assets and Liabilities - Narrative (Details) - Designated as cash flow hedge $ in Thousands, € in Millions	3 Months Ended	9 Months Ended
	Sep. 28, 2024 USD ($)	Sep. 28, 2024 USD ($)	Jul. 01, 2024	Jul. 14, 2022 USD ($)	Jul. 14, 2022 EUR (€)	May 12, 2022 USD ($)
Foreign exchange contracts \| Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Unrealized loss on derivative instruments	$ 4,000
Pre-tax loss from AOCI expected to be recognized in next twelve months	4,200	$ 4,200
Foreign exchange contracts \| Designated as Hedging Instrument \| August 2025 Collars
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument, weighted average cap price (per unit)			19.435
Derivative instrument, weighted average floor price (per unit)			18.000
Foreign exchange contracts \| Designated as Hedging Instrument \| September 2025 Collars
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instrument, weighted average cap price (per unit)			21.000
Derivative instrument, weighted average floor price (per unit)			19.655
Interest rate swap agreement \| Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Notional amount of derivatives						$ 200,000
Unrealized loss on derivative instruments	5,900	3,300
Pre-tax loss from AOCI expected to be recognized in next twelve months	$ 1,800	$ 1,800
Foreign exchange forward contract \| Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Notional amount of derivatives				$ 6,300	€ 117.0

Fair Value of Assets and Liabilities - Fair Values of Derivatives and Classifications on the Condensed Consolidated Balance Sheets (Details) - Designated as cash flow hedge - Designated as Hedging Instrument - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Interest rate swap agreement
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets, current	$ 1,792	$ 3,712
Derivative assets, non-current	713	2,140
Foreign exchange contracts
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Derivative assets, current	60	0
Derivative liability, current	4,307	0
Derivative liabilities, non current	$ 1	$ 0

Fair Value of Assets and Liabilities - Fair Values of Derivatives and Classifications on Statement of Operation and Statement of Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Interest rate swap agreement \| Designated as cash flow hedge \| Designated as Hedging Instrument
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax	$ 5,857	$ (2,034)	$ 3,346	$ (2,817)
Interest rate swap agreement \| Designated as cash flow hedge \| Designated as Hedging Instrument \| Interest expense
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Pre-tax gain (loss) on derivatives	(1,282)	(1,252)	(3,850)	(3,246)
Interest rate swap agreement \| Designated as cash flow hedge \| Designated as Hedging Instrument \| Cost of sales
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Pre-tax gain (loss) on derivatives	409	0	409	0
Foreign exchange forward contract \| Not Designated as Hedging Instrument \| Foreign exchange loss
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Pre-tax gain (loss) on derivatives	0	4,310	0	3,226
Zero cost collar agreement \| Designated as cash flow hedge \| Designated as Hedging Instrument
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Other comprehensive income (loss), cash flow hedge, gain (loss), before reclassification and tax	$ 4,003	$ 0	$ 4,003	$ 0

Fair Value of Assets and Liabilities - Assets Measured at Fair Value (Details) - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	$ 552,735	$ 415,788
Investments in equity securities	12,888	10,832
Mutual funds	23,479	20,148
Total	589,102	446,768
Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	552,735	415,788
Investments in equity securities	12,888	10,832
Mutual funds	23,479	20,148
Total	589,102	446,768
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Investments in equity securities	0	0
Mutual funds	0	0
Total	0	0
Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Cash equivalents	0	0
Investments in equity securities	0	0
Mutual funds	0	0
Total	$ 0	$ 0

Fair Value of Assets and Liabilities - Carrying Value and Estimated Fair Value of Senior Notes (Details) - Senior Notes - USD ($) $ in Thousands	Sep. 28, 2024	Dec. 30, 2023
Euro Senior Notes, Series B due 2028 \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	$ 106,106	$ 105,246
Euro Senior Notes, Series B due 2028 \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	99,141	96,532
U.S. Senior Notes, Series B due 2027 \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	100,000	100,000
U.S. Senior Notes, Series B due 2027 \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	97,967	96,127
U.S. Senior Notes, Series A due 2025 \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	50,000	50,000
U.S. Senior Notes, Series A due 2025 \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	49,735	49,070
U.S. Senior Notes, Series B due 2030 \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	125,000	125,000
U.S. Senior Notes, Series B due 2030 \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	118,596	115,687
U.S. Senior Notes, due 2032 \| Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	100,000	100,000
U.S. Senior Notes, due 2032 \| Estimated Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions
Long-term debt fair value	$ 95,229	$ 93,228

Benefit Plans - Benefit Plan Expenses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Retirement Benefits [Abstract]
Service cost	$ 753	$ 700	$ 2,318	$ 2,087
Interest cost	961	961	2,931	2,850
Expected return on plan assets	(527)	(470)	(1,555)	(1,409)
Amortization of prior service and net actuarial loss	47	12	139	34
Net periodic benefit cost	$ 1,234	$ 1,203	$ 3,833	$ 3,562

Benefit Plans - Narrative (Details) - USD ($) $ in Thousands		3 Months Ended			9 Months Ended
	Oct. 04, 2024	Mar. 31, 2026	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Defined Benefit Plan Disclosure
Contributions expected			$ 2,200		$ 2,200
Expected direct payments			2,100		2,100
Defined benefit plan expense			1,234	$ 1,203	3,833	$ 3,562
Subsequent Event
Defined Benefit Plan Disclosure
Decrease in pension obligation	$ 23,000
Change in pension obligation (percent)	31.00%
Subsequent Event \| Forecast \| Minimum
Defined Benefit Plan Disclosure
Pension settlement cost		$ 6,000
Subsequent Event \| Forecast \| Maximum
Defined Benefit Plan Disclosure
Pension settlement cost		$ 8,000
Foreign Plan
Defined Benefit Plan Disclosure
Defined benefit plan expense			600	400	2,000	1,100
Other comprehensive (loss) income as component of net period benefit cost, before tax			$ 300	$ 0	$ 900	$ (100)

Other Comprehensive Income (Loss) - Components of Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Sep. 28, 2024	Sep. 30, 2023
Other Comprehensive Income (Loss)
Pre-tax	$ 56,676			$ (2,270)			$ 5,171	$ (3,406)
Tax	(283)			136			(136)	(356)
Total change in other comprehensive income (loss)	56,393	$ (21,067)	$ (30,291)	(2,134)	$ (14,911)	$ 13,283	5,035	(3,762)
Defined benefit pension plan and other adjustments
Other Comprehensive Income (Loss)
Pre-tax	205			(3)			901	(125)
Tax	(14)			0			(40)	(31)
Total change in other comprehensive income (loss)	191			(3)			861	(156)
Cash flow hedges
Other Comprehensive Income (Loss)
Pre-tax	(9,860)			2,034			(7,349)	2,817
Tax	1,563			(488)			960	(676)
Total change in other comprehensive income (loss)	(8,297)			1,546			(6,389)	2,141
Foreign currency translation adjustment
Other Comprehensive Income (Loss)
Pre-tax	66,331			(4,301)			11,619	(6,098)
Tax	(1,832)			624			(1,056)	351
Total change in other comprehensive income (loss)	$ 64,499			$ (3,677)			$ 10,563	$ (5,747)

Other Comprehensive Income (Loss) - Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Sep. 28, 2024	Sep. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Balance at the beginning	$ 2,465,487	$ 2,471,293	$ 2,480,481	$ 2,357,251	$ 2,307,476	$ 2,211,378	$ 2,480,481	$ 2,211,378
Activity in the period	56,393	(21,067)	(30,291)	(2,134)	(14,911)	13,283	5,035	(3,762)
Balance at the end	2,573,100	2,465,487	2,471,293	2,404,859	2,357,251	2,307,476	2,573,100	2,404,859
Accumulated other comprehensive loss
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Balance at the beginning	(107,175)	(86,108)	(55,817)	(97,392)	(82,481)	(95,764)	(55,817)	(95,764)
Activity in the period	56,393	(21,067)	(30,291)	(2,134)	(14,911)	13,283
Balance at the end	(50,782)	$ (107,175)	(86,108)	(99,526)	$ (97,392)	(82,481)	(50,782)	(99,526)
Defined benefit pension plan and other adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Balance at the beginning			(7,613)			(2,193)	(7,613)	(2,193)
Activity in the period	191			(3)			861	(156)
Balance at the end	(6,752)			(2,349)			(6,752)	(2,349)
Cash flow hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Balance at the beginning			4,448			6,596	4,448	6,596
Activity in the period	(8,297)			1,546			(6,389)	2,141
Balance at the end	(1,941)			8,737			(1,941)	8,737
Foreign currency translation adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax
Balance at the beginning			$ (52,652)			$ (100,167)	(52,652)	(100,167)
Activity in the period	64,499			(3,677)			10,563	(5,747)
Balance at the end	$ (42,089)			$ (105,914)			$ (42,089)	$ (105,914)

Other Comprehensive Income (Loss) - Reclassification out of Accumulated Other Comprehensive (Loss) Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Reclassification out of Accumulated Other Comprehensive Income \| Amortization of prior service and net actuarial loss (gain)
Reclassification Adjustment out of Accumulated Other Comprehensive Income
Amortization of prior service and net actuarial loss (gain)	$ 323	$ (11)	$ 1,026	$ (33)

Income Taxes (Details)	3 Months Ended		9 Months Ended
Income Taxes (Details)	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Effective tax rate (as a percent)	25.30%	23.30%	21.90%	19.70%

Earnings Per Share - Computation of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 28, 2024	Jun. 29, 2024	Mar. 30, 2024	Sep. 30, 2023	Jul. 01, 2023	Apr. 01, 2023	Sep. 28, 2024	Sep. 30, 2023
Numerator:
Net income as reported	$ 58,058	$ 45,466	$ 48,452	$ 57,788	$ 70,071	$ 88,745	$ 151,976	$ 216,604
Weighted average shares outstanding
Basic (in shares)	24,796			24,893			24,822	24,838
Effect of dilutive securities (in shares)	229			250			218	262
Diluted (in shares)	25,025			25,143			25,040	25,100
Earnings Per Share:
Basic earnings per share (in dollars per share)	$ 2.34			$ 2.32			$ 6.12	$ 8.72
Diluted earnings per share (in dollars per share)	$ 2.32			$ 2.30			$ 6.07	$ 8.63

Earnings Per Share - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
Earnings Per Share - Narrative (Details) - USD ($)	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Apr. 25, 2024	Apr. 28, 2021
Antidilutive Securities Excluded from Computation of Earnings Per Share
Antidilutive securities excluded (in shares)	124,197	80,828	136,635	106,156
Shares repurchased (in shares)		0	179,311	0
Repurchases of common stock			$ 40,900,000
2021 Share Repurchase Program
Antidilutive Securities Excluded from Computation of Earnings Per Share
Repurchase authorized					$ 300,000,000	$ 300,000,000
Stock repurchase expiration date			Apr. 30, 2027
Repurchases of common stock			$ 38,900,000
2024 Share Repurchase Program
Antidilutive Securities Excluded from Computation of Earnings Per Share
Repurchases of common stock			$ 2,000,000

Segment Information - Narratives (Details)	9 Months Ended
Segment Information - Narratives (Details)	Sep. 28, 2024 segment
Segment Reporting [Abstract]
Number of operating segments (in segments)	3

Segment Information - Segment Reporting Information, by Segment (Details) $ in Thousands	3 Months Ended		6 Months Ended	9 Months Ended
	Sep. 28, 2024 USD ($) property	Sep. 30, 2023 USD ($)	Jun. 29, 2024 USD ($)	Sep. 28, 2024 USD ($)	Sep. 30, 2023 USD ($)
Segment Reporting Information
Net sales	$ 567,390	$ 607,071		$ 1,661,263	$ 1,828,850
Depreciation and amortization	33,170	33,909		98,443	103,283
Operating income (loss)	87,821	93,645		208,279	296,339
Interest expense	9,772	10,101		29,358	29,803
Foreign exchange loss	9,630	11,776		4,273	8,697
Other income, net	(9,297)	(3,527)		(19,916)	(11,810)
Income before income taxes	77,716	75,295		194,564	269,649
Restructuring charges	1,840	3,698		9,396	8,479
Operating Income (Loss)
Segment Reporting Information
Acquisition related costs	1,000	1,800		2,800	9,000
Other
Segment Reporting Information
Operating income (loss)	(2,266)	(6,272)		(11,559)	(22,154)
Electronics
Segment Reporting Information
Net sales	304,188	343,933		900,932	1,052,673
Depreciation and amortization	20,045	19,623		59,656	59,219
Restructuring charges	1,235	1,238		6,479	3,154
Electronics \| Operating Segments
Segment Reporting Information
Operating income (loss)	48,891	77,022		132,859	247,028
Transportation
Segment Reporting Information
Net sales	171,381	177,019		510,711	515,708
Depreciation and amortization	9,084	10,193		26,827	32,547
Restructuring charges	591	1,803		2,469	3,420
Impairment	900
Gain (loss) on sale of properties	$ 500		$ 1,000
Number of properties sold (property) \| property	2
Transportation \| Operating Segments
Segment Reporting Information
Operating income (loss)	$ 23,485	9,694		54,925	26,015
Industrial
Segment Reporting Information
Net sales	91,821	86,119		249,620	260,469
Depreciation and amortization	4,041	4,093		11,960	11,517
Restructuring charges	14	657		448	1,905
Industrial \| Operating Segments
Segment Reporting Information
Operating income (loss)	$ 17,711	$ 13,201		$ 32,054	$ 45,450

Segment Information - Revenues and Long-lived Assets by Geographical Area (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 30, 2023
Segment Reporting Information
Net sales	$ 567,390	$ 607,071	$ 1,661,263	$ 1,828,850
Long-lived assets	481,592		481,592		$ 493,153
Additions to long-lived assets			50,091	61,221
United States
Segment Reporting Information
Net sales	211,940	217,904	604,198	635,892
Long-lived assets	67,491		67,491		73,126
Additions to long-lived assets			9,591	7,407
China
Segment Reporting Information
Net sales	133,051	138,393	379,730	415,430
Long-lived assets	137,813		137,813		139,736
Additions to long-lived assets			10,681	22,558
Mexico
Segment Reporting Information
Long-lived assets	93,057		93,057		102,218
Additions to long-lived assets			8,875	11,339
Germany
Segment Reporting Information
Long-lived assets	56,578		56,578		47,217
Additions to long-lived assets			12,160	6,534
Philippines
Segment Reporting Information
Long-lived assets	68,620		68,620		73,217
Additions to long-lived assets			3,025	5,245
Other countries
Segment Reporting Information
Net sales	222,399	$ 250,774	677,335	777,528
Long-lived assets	$ 58,033		58,033		$ 57,639
Additions to long-lived assets			$ 5,759	$ 8,138

Related Party Transactions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 28, 2024	Sep. 30, 2023	Sep. 28, 2024	Sep. 30, 2023	Dec. 30, 2023
Related Party Transaction
Sales to related party	$ 567,390	$ 607,071	$ 1,661,263	$ 1,828,850
Accounts receivable balance	338,758		338,758		$ 287,018
Accounts payable balance	179,486		179,486		173,535
Related Party \| Powersem
Related Party Transaction
Sales to related party	300	500
Purchase material/service from related party	600	1,200
Accounts receivable balance	100		100		0
Accounts payable balance	500		500		500
Related Party \| EB Tech
Related Party Transaction
Sales to related party	0	0
Purchase material/service from related party	200	100
Accounts receivable balance	0		0		0
Accounts payable balance	0		0		0
Related Party \| ATEC
Related Party Transaction
Sales to related party	0	0
Purchase material/service from related party	600	$ 2,000
Accounts receivable balance	0		0		0
Accounts payable balance	$ 100		$ 100		$ 1,000
Powersem \| Related Party
Related Party Transaction
Ownership percentage (as a percent)	45.00%		45.00%
Sales to related party			$ 1,200	1,700
Purchase material/service from related party			$ 3,000	3,300
EB Tech \| Related Party
Related Party Transaction
Ownership percentage (as a percent)	19.00%		19.00%
Sales to related party			$ 0	0
Purchase material/service from related party			$ 600	300
ATEC \| Related Party
Related Party Transaction
Ownership percentage (as a percent)	24.00%		24.00%
Sales to related party			$ 0	0
Purchase material/service from related party			$ 3,500	$ 7,600

Littelfuse (NASDAQ:LFUS)
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