AJG Arthur J Gallagher and Company

Exhibit 1.1

Arthur J. Gallagher & Co.

(a Delaware corporation)

$500,000,000 5.450% Senior Notes due 2034

$500,000,000 5.750% Senior Notes due 2054

UNDERWRITING AGREEMENT

Dated: February 12, 2024

Arthur J. Gallagher & Co.

(a Delaware corporation)

$500,000,000 5.450% Senior Notes due 2034

$500,000,000 5.750% Senior Notes due 2054

UNDERWRITING AGREEMENT

February 12, 2024

BofA Securities, Inc.

One Bryant Park

New York, NY 10036

J.P. Morgan Securities LLC

383 Madison Avenue

New York, NY 10179

as Representatives of the several Underwriters

Ladies and Gentlemen:

Arthur J. Gallagher & Co., a Delaware corporation (the “Company”), confirms its agreement with BofA Securities, Inc. (“BofA”), J.P. Morgan Securities LLC (“J.P. Morgan”) and each of the other Underwriters named in Schedule A hereto (collectively, the “Underwriters,” which term shall also include any underwriter substituted as hereinafter provided in Section 10 hereof), for whom BofA and J.P. Morgan are acting as representatives (in such capacity, the “Representatives”), with respect to the sale by the Company and the purchase by the Underwriters, acting severally and not jointly, of the respective principal amounts set forth in such Schedule A of the Company’s $500,000,000 aggregate principal amount of its 5.450% Senior Notes due 2034 (the “2034 Notes”) and $500,000,000 aggregate principal amount of its 5.750% Senior Notes due 2054 (the “2054 Notes,” and together with the 2034 Notes, the “Notes”).

The Notes will be issued pursuant to an indenture, dated as of May 20, 2021 (the “Base Indenture”), between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”). Certain terms of the Notes will be established pursuant to an Officers’ Certificate (the “Officers’ Certificate”) to the Base Indenture to be dated as of the Closing Time (as defined in Section 2 below) (together with the Base Indenture, the “Indenture”). The Notes will be issued in book-entry form in the name of Cede & Co., as nominee of The Depository Trust Company (“DTC”), pursuant to a Letter of Representation, dated as of November 9, 2021 (the “DTC Agreement”), among the Company, the Trustee and DTC.

The Company has prepared and filed with the Securities and Exchange Commission (the “Commission”) an “automatic shelf registration statement,” as defined under Rule 405 (“Rule 405”) under the Securities Act of 1933, as amended (the “1933 Act”), on Form S-3 (File No. 333-277002) covering the public offering and sale of certain securities of the Company, including the Notes, under the 1933 Act and the rules and regulations promulgated thereunder (the “1933 Act Regulations”), which automatic shelf registration statement became effective under Rule 462(e) of the 1933 Act Regulations (“Rule 462(e)”). Such registration statement, as of any time, means such registration statement as amended by any post-

effective amendments thereto at such time, including the exhibits and any schedules thereto at such time, the documents incorporated or deemed to be incorporated by reference therein at such time pursuant to Item 12 of Form S-3 under the 1933 Act and the documents otherwise deemed to be a part thereof as of such time pursuant to Rule 430B of the 1933 Act Regulations (“Rule 430B”), is referred to herein as the “Registration Statement”; provided, however, that the “Registration Statement” without reference to a time means such registration statement as amended by any post-effective amendments thereto as of the time of the first contract of sale for the Securities, which time shall be considered the “new effective date” of the Registration Statement with respect to the Securities within the meaning of Rule 430B(f)(2), including the exhibits and schedules thereto as of such time, the documents incorporated or deemed to be incorporated by reference therein at such time pursuant to Item 12 of Form S-3 under the 1933 Act and the documents otherwise deemed to be a part thereof as of such time pursuant to Rule 430B. Each preliminary prospectus supplement and the base prospectus used in connection with the offering of the Notes, including the documents incorporated or deemed to be incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933 Act immediately prior to the Applicable Time (as defined below), are collectively referred to herein as a “preliminary prospectus.” Promptly after execution and delivery of this Agreement, the Company will prepare and file a final prospectus supplement relating to the Notes in accordance with the provisions of Rule 424(b) of the 1933 Act Regulations (“Rule 424(b)”). The final prospectus supplement and the base prospectus, in the form first furnished or made available to the Underwriters for use in connection with the offering and sale of the Notes, including the documents incorporated or deemed to be incorporated by reference therein pursuant to Item 12 of Form S-3 under the 1933 Act immediately prior to the Applicable Time, are collectively referred to herein as the “Prospectus.” For purposes of this Agreement, all references to the Registration Statement, any preliminary prospectus or the Prospectus or any amendment or supplement to any of the foregoing shall be deemed to include the copy filed with the Commission pursuant to its Electronic Data Gathering, Analysis and Retrieval system (or any successor system)(“EDGAR”).

As used in this Agreement:

“Applicable Time” means 3:40 P.M., New York City time, on February 12, 2024 or such other time as agreed by the Company and the Representatives.

“General Disclosure Package” means each Issuer General Use Free Writing Prospectus issued at or prior to the Applicable Time and the most recent preliminary prospectus (including any documents incorporated therein by reference) that is furnished to the Underwriters for general distribution to prospective investors prior to the Applicable Time, all considered together.

“Issuer Free Writing Prospectus” means any “issuer free writing prospectus,” as defined in Rule 433 of the 1933 Act Regulations (“Rule 433”), including, without limitation, any “free writing prospectus” (as defined in Rule 405) relating to the Notes that is (i) required to be filed with the Commission by the Company, (ii) a “road show that is a written communication” within the meaning of Rule 433(d)(8)(i), whether or not required to be filed with the Commission, or (iii) exempt from filing with the Commission pursuant to Rule 433(d)(5)(i) because it contains a description of the Notes or of the offering thereof that does not reflect the final terms, in each case in the form filed or required to be filed with the Commission or, if not required to be filed, in the form retained in the Company’s records pursuant to Rule 433(g).

“Issuer General Use Free Writing Prospectus” means any Issuer Free Writing Prospectus that is intended for general distribution to investors, as evidenced by its being specified in Schedule B hereto.

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“Issuer Limited Use Free Writing Prospectus” means any Issuer Free Writing Prospectus that is not an Issuer General Use Free Writing Prospectus.

All references in this Agreement to financial statements and schedules and other information which is “contained,” “included” or “stated” (or other references of like import) in the Registration Statement, any preliminary prospectus or the Prospectus shall be deemed to include all such financial statements and schedules and other information incorporated or deemed to be incorporated by reference in the Registration Statement, any preliminary prospectus or the Prospectus, as the case may be, prior to the Applicable Time; and all references in this Agreement to amendments or supplements to the Registration Statement, any preliminary prospectus or the Prospectus shall be deemed to include the filing of any document under the Securities Exchange Act of 1934, as amended (the “1934 Act”), and the rules and regulations promulgated thereunder (the “1934 Act Regulations”) incorporated or deemed to be incorporated by reference in the Registration Statement, such preliminary prospectus or the Prospectus, as the case may be, at or after the Applicable Time.

This Agreement, the Indenture and the Notes are referred to herein, collectively, as the “Operative Documents.”

SECTION 1. Representations and Warranties.

(a) Representations and Warranties by the Company. The Company represents and warrants to each Underwriter at the Applicable Time and the Closing Time (as defined below), and agrees with each Underwriter, as follows:

(i) Compliance of the Registration Statement, the Prospectus and Incorporated Documents. The Company meets the applicable requirements for use of Form S-3 under the 1933 Act. The Registration Statement is an automatic shelf registration statement under Rule 405 and the Notes have been and remain eligible for registration by the Company on such automatic shelf registration statement. Each of the Registration Statement and any post-effective amendment thereto has become effective under the 1933 Act. No stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto has been issued under the 1933 Act, no notice of objection of the Commission to the use of the Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) of the 1933 Act Regulations (“Rule 401(g)(2)”) has been received by the Company, no order preventing or suspending the use of any preliminary prospectus or the Prospectus or any amendment or supplement thereto has been issued and no proceedings for any of those purposes have been instituted or are pending or, to the Company’s knowledge, contemplated. The Company has complied in all material respects with each request (if any) from the Commission for additional information. In addition, the Indenture has been duly qualified under the Trust Indenture Act of 1939, as amended, and the rules and regulations promulgated thereunder (the “Trust Indenture Act”).

Each of the Registration Statement and any post-effective amendment thereto, at the time of its effectiveness, each deemed effective date with respect to the Underwriters pursuant to Rule 430B(f)(2), the Applicable Time and the Closing Time complied and will comply in all material respects with the applicable requirements of the 1933 Act, the 1933 Act Regulations and the Trust Indenture Act. Each preliminary prospectus and the Prospectus and any amendment or supplement thereto, at the time each was filed with the Commission, and, in each case, the Applicable Time and the Closing Time complied and will comply in all material respects with the applicable requirements of the 1933 Act, the 1933 Act Regulations and the Trust Indenture Act, and each preliminary prospectus and the Prospectus delivered to the Underwriters for use in connection with this offering was identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

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The documents incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, when they became effective or at the time they were or hereafter are filed with the Commission, complied and will comply in all material respects with the applicable requirements of the 1934 Act and the 1934 Act Regulations.

The representations and warranties in this subsection shall not apply to statements in or omissions from the Registration Statement (or any amendment or supplement thereto), the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) made (i) as to that part of the Registration Statement that constitutes the Statement of Eligibility and Qualification (Form T-1) of the Trustee under the Trust Indenture Act or (ii) in reliance upon and in conformity with information furnished to the Company in writing by any of the Underwriters through the Representatives expressly for use therein, it being understood and agreed that the only such information furnished by any Underwriter through the Representatives consists of the information described as such in Section 6(b) hereof (the “Underwriter Information”).

(ii) Accurate Disclosure. Neither the Registration Statement nor any amendment thereto, at its effective time, as of the Applicable Time or at the Closing Time, contained, contains or will contain an untrue statement of a material fact or omitted, omits or will omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading. At the Applicable Time, neither (A) the General Disclosure Package nor (B) any individual Issuer Limited Use Free Writing Prospectus, when considered together with the General Disclosure Package, included, includes or will include an untrue statement of a material fact or omitted, omits or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. Neither the Prospectus nor any amendment or supplement thereto, as of its issue date, at the time of any filing with the Commission pursuant to Rule 424(b) or at the Closing Time, included, includes or will include an untrue statement of a material fact or omitted, omits or will omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. The documents incorporated or deemed to be incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus, at the time the Registration Statement became effective or when such incorporated documents were filed with the Commission, as the case may be, when read together with the other information in the Registration Statement, the General Disclosure Package or the Prospectus, as the case may be, did not, does not and will not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading.

The representations and warranties in this subsection shall not apply to statements in or omissions from the Registration Statement or any amendment thereto or the General Disclosure Package or the Prospectus or any amendment or supplement thereto (i) as to that part of the Registration Statement that constitutes the Statement of Eligibility and Qualification (Form T-1) of the Trustee under the Trust Indenture Act or (ii) made in reliance upon and in conformity with the Underwriter Information.

(iii) Issuer Free Writing Prospectuses. No Issuer Free Writing Prospectus conflicts or will conflict with the information contained in the Registration Statement, any preliminary prospectus or the Prospectus, including any document incorporated by reference therein, that has not been superseded or modified. If at any time following issuance of an Issuer Free Writing Prospectus there occurred or occurs an event or development as a result of which such Issuer Free

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Writing Prospectus conflicted or would conflict with the information contained in the Registration Statement, the General Disclosure Package or the Prospectus, the Company has promptly notified or will promptly notify the Representatives and has promptly amended or supplemented or will promptly amend or supplement, at its own expense, such Issuer Free Writing Prospectus to eliminate or correct such conflict. The foregoing two sentences do not apply to statements in or omissions from any Issuer Free Writing Prospectus based upon and in conformity with written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by any Underwriter through the Representatives consists of the Underwriter Information.

(iv) Distribution of Offering Material By the Company. The Company has not distributed and will not distribute, prior to the later of the Closing Time and the completion of the Underwriters’ distribution of the Notes, any offering material in connection with the offering and sale of the Notes other than the Registration Statement, the General Disclosure Package, the Prospectus, any Issuer Free Writing Prospectus reviewed and consented to by the Representatives and listed on Schedule B hereto or any electronic road show or other written communications reviewed and consented to by the Representatives and listed on Schedule C hereto (each a, “Company Additional Written Communication”). Each such Company Additional Written Communication, when taken together with the General Disclosure Package, did not, and at the Closing Time will not, contain any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading. The preceding sentence does not apply to statements in or omissions from the Company Additional Written Communication based upon and in conformity with written information furnished to the Company by any Underwriter through the Representatives specifically for use therein, it being understood and agreed that the only such information furnished by any Underwriter through the Representatives consists of the Underwriter Information.

(v) Well-Known Seasoned Issuer. (A) At the original effectiveness of the Registration Statement, (B) at the time of the most recent amendment thereto for the purposes of complying with Section 10(a)(3) of the 1933 Act (whether such amendment was by post-effective amendment, incorporated report filed pursuant to Section 13 or 15(d) of the 1934 Act or form of prospectus), (C) at the time the Company or any person acting on its behalf (within the meaning, for this clause only, of Rule 163(c) of the 1933 Act Regulations) made any offer relating to the Notes in reliance on the exemption of Rule 163, (D) at the date of this Agreement and (E) at the Applicable Time, the Company was and is a “well-known seasoned issuer,” as defined in Rule 405.

(vi) Company Not Ineligible Issuer. (A) At the time of filing the Registration Statement and any post-effective amendment thereto, (B) at the earliest time thereafter that the Company or another offering participant made a bona fide offer (within the meaning of Rule 164(h)(2) of the 1933 Act Regulations) of the Notes, (C) at the date of this Agreement and (D) at the Applicable Time, the Company was not and is not an “ineligible issuer,” as defined in Rule 405, without taking account of any determination by the Commission pursuant to Rule 405 that it is not necessary that the Company be considered an ineligible issuer.

(vii) Independent Accountants. The accountants who certified the financial statements and supporting schedules included in the Registration Statement, the General Disclosure Package and the Prospectus are independent public accountants as required by the 1933 Act, the 1933 Act Regulations, the 1934 Act, the 1934 Act Regulations and the Public Company Accounting Oversight Board.

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(viii) Financial Statements; Non-GAAP Financial Measures. The financial statements and the related schedules and notes thereto of the Company and its consolidated subsidiaries included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus present fairly in all material respects the financial position of the Company and its consolidated subsidiaries as of the dates indicated and the consolidated results of their operations and the consolidated changes in their cash flows for the periods specified; except as otherwise disclosed in the related notes thereto, such consolidated financial statements have been prepared in conformity with U.S. generally accepted accounting principles (“GAAP”) applied on a consistent basis throughout the periods covered thereby; the other financial information included or incorporated by reference in the Registration Statement, the General Disclosure Package or the Prospectus has been derived from the accounting records of the Company and its consolidated subsidiaries and presents fairly in all material respects the information shown thereby. Except as otherwise disclosed, the selected financial data and the summary financial information included in the Registration Statement, the General Disclosure Package and the Prospectus present fairly the information shown therein and have been compiled on a basis consistent with that of the audited financial statements included therein. Except as included or incorporated by reference therein, no historical or pro forma financial statements or supporting schedules are required to be included or incorporated by reference in the Registration Statement, the General Disclosure Package or the Prospectus under the 1933 Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations. All disclosures contained or incorporated by reference in the Registration Statement, the General Disclosure Package or the Prospectus, if any, regarding “non-GAAP financial measures” (as such term is defined by the rules and regulations of the Commission) comply with Regulation G under the 1934 Act and Item 10 of Regulation S-K under the 1933 Act, to the extent applicable.

(ix) No Material Adverse Change. Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, since the respective dates as of which information is given therein, (A) neither the Company nor any of its subsidiaries has sustained any material loss or interference with its business from fire, explosion, flood or other calamity, whether or not covered by insurance, or from any labor dispute or court or governmental action, order or decree, (B) there has been no material adverse change in the condition, financial or otherwise, or in the earnings, business affairs or business prospects of the Company and its subsidiaries considered as one enterprise, whether or not arising in the ordinary course of business (a “Material Adverse Change”), (C) there have been no transactions entered into by the Company or any of its subsidiaries, other than those in the ordinary course of business, which are material with respect to the Company and its subsidiaries considered as one enterprise, and (D) there has been no dividend or distribution of any kind declared, paid or made by the Company on any class or series of its capital stock.

(x) Good Standing of the Company. The Company has been duly incorporated and is validly existing as a corporation in good standing under the laws of the jurisdiction of its incorporation, has the corporate power and authority to own its property and conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and to enter into and perform its obligations under, and to consummate the transactions contemplated in, the Operative Documents, except to the extent that the failure to be so qualified or be in good standing would not, singly or in the aggregate, result in a material adverse effect on the business, properties, management, financial position, stockholders’ equity, or results of operations of the Company and its subsidiaries taken as a whole or on the performance by the Company of its obligations under the Operative Documents (a “Material Adverse Effect”). The Company is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or leasing of property requires such qualification, except where the

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failure so to qualify or to be in good standing would not, singly or in the aggregate, result in a Material Adverse Effect. The Company has furnished to the Representatives complete and correct copies of its charter and by-laws or similar organizational documents and all amendments thereto, and no change thereto is contemplated or has been authorized or approved by the Company or its securityholders.

(xi) Good Standing of Subsidiaries. Each “significant subsidiary” of the Company (as such term is defined in Rule 1-02 of Regulation S-X) (each, a “Significant Subsidiary” and, collectively, the “Significant Subsidiaries”) has been duly incorporated or validly formed, as applicable, is validly existing and in good standing under the laws of the jurisdiction of its incorporation or other organization, has the power and authority to own its property and to conduct its business as described in the Registration Statement, the General Disclosure Package and the Prospectus and is duly qualified to transact business and is duly qualified to transact business and is in good standing in each jurisdiction in which the conduct of its business or its ownership or leasing of property requires such qualification, except to the extent that the failure to be so qualified or be in good standing would not, singly or in the aggregate, result in a Material Adverse Effect. Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, all of the issued and outstanding shares of capital stock of or other equity interests in each Significant Subsidiary have been duly authorized and validly issued, are fully paid and non-assessable and are owned by the Company, directly or through subsidiaries, free and clear of any security interest, mortgage, pledge, lien, encumbrance, claim or equity. As of December 31, 2023, the only subsidiaries of the Company are the subsidiaries listed on Exhibit 21.1 to the Company’s most recent Annual Report on Form 10-K.

(xii) Capitalization. The Company has the capitalization as set forth in each of the Registration Statement, the General Disclosure Package and the Prospectus under the heading “Capitalization” as of the date indicated.

(xiii) Authorization of Agreement. This Agreement has been duly authorized, executed and delivered by the Company.

(xiv) Authorization of the Indenture. The Indenture has been duly qualified under the Trust Indenture Act and has been duly authorized and, at the Closing Time will have been duly executed and delivered by the Company and, when duly executed and delivered in accordance with its terms by each of the parties thereto, will constitute a valid and legally binding agreement of the Company, enforceable against the Company in accordance with its terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles.

(xv) Authorization of the Notes. The Notes to be purchased by the Underwriters from the Company will, at the Closing Time, be in the form contemplated by the Indenture, have been duly authorized for issuance and sale pursuant to this Agreement and the Indenture and, at the Closing Time, will have been duly executed by the Company and, when authenticated in the manner provided for in the Indenture and delivered against payment of the purchase price therefor, will constitute valid and binding obligations of the Company, enforceable in accordance with their terms, except as the enforcement thereof may be limited by bankruptcy, insolvency, fraudulent transfer, reorganization, moratorium or other similar laws relating to or affecting the rights and remedies of creditors or by general equitable principles, and will be entitled to the benefits of the Indenture.

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(xvi) Description of the Notes and the Indenture. The Notes and the Indenture will, at the Closing Time, conform in all material respects to the descriptions thereof contained in the Registration Statement, the General Disclosure Package and the Prospectus.

(xvii) Absence of Violations, Defaults and Conflicts. Neither the Company nor any of the Significant Subsidiaries is (A) in violation of its charter, by-laws or similar organizational document, (B) in default in the performance or observance of any obligation, agreement, covenant or condition contained in any contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or other agreement or instrument to which the Company or any of its subsidiaries is a party or by which it or any of them may be bound or to which any of the properties, assets or operations of the Company or any of its subsidiaries is subject (collectively, “Agreements and Instruments”), except for such defaults that would not, singly or in the aggregate, result in a Material Adverse Effect, or (C) in violation of any law, statute, rule, regulation, judgment, order, writ or decree of any arbitrator, court, governmental body, regulatory body, administrative agency or other authority, body or agency having jurisdiction over the Company or any of its subsidiaries or any of their respective properties, assets or operations (each, a “Governmental Authority”), except for such violations that would not, singly or in the aggregate, result in a Material Adverse Effect. The execution, delivery and performance of the Operative Documents and the consummation of the transactions contemplated therein and in the Registration Statement, the General Disclosure Package and the Prospectus (including the issuance and sale of the Notes and the use of the proceeds from the sale of the Notes as described therein under the caption “Use of Proceeds”) and compliance by the Company with its obligations under the Operative Documents do not and will not, whether with or without the giving of notice or passage of time or both, conflict with or constitute a breach of, or default or Repayment Event (as defined below) under, or result in the creation or imposition of any lien, charge or encumbrance upon any properties, assets or operations of the Company or any of its subsidiaries pursuant to, the Agreements and Instruments (except for such conflicts, breaches, defaults or Repayment Events or liens, charges or encumbrances that would not, singly or in the aggregate, result in a Material Adverse Effect), nor will such action result in any violation of the provisions of the charter, by-laws or similar organizational document of the Company or any of its subsidiaries or any law, statute, rule, regulation, judgment, order, writ or decree of any Governmental Authority. As used herein, a “Repayment Event” means any event or condition which gives the holder of any note, debenture or other evidence of indebtedness (or any person acting on such holder’s behalf) the right to require the repurchase, redemption or repayment of all or a portion of such indebtedness by the Company or any of its subsidiaries.

(xviii) Absence of Labor Dispute. No material labor dispute with the employees of the Company or any of its subsidiaries is pending, except as described in the Registration Statement, the General Disclosure Package and the Prospectus, or, to the knowledge of the Company, is imminent.

(xix) Absence of Proceedings; Filing of Exhibits. There are no legal or governmental proceedings pending or threatened to which the Company or any of its subsidiaries is a party or to which any of the properties of the Company or any of its subsidiaries is subject (A) other than proceedings accurately described in all material respects in the Registration Statement, General Disclosure Package and the Prospectus, and proceedings that would not have a Material Adverse Effect, or (B) that are required to be described in the Registration Statement, General Disclosure Package or the Prospectus and are not so described; and there are no contracts or other documents that are required to be described in the Registration Statement, General Disclosure Package or the Prospectus or to be filed as exhibits to the Registration Statement that are not described or filed as required.

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(xx) Absence of Further Requirements. No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any Governmental Authority is necessary or required for the performance by the Company of its obligations under the Operative Documents, in connection with the offering, issuance or sale of the Notes or the consummation of the transactions contemplated in the Operative Documents, except such as have been already obtained or as may be required under the 1933 Act, the 1933 Act Regulations, the securities laws of any state or non-U.S. jurisdiction or the rules of Financial Industry Regulatory Authority, Inc. (“FINRA”).

(xxi) Possession of Licenses and Permits. The Company and its subsidiaries possess all certificates, authorizations and permits issued by the appropriate federal, state or foreign regulatory authorities necessary to conduct their respective businesses, except where the failure to possess any such certificates, authorizations or permits, singly or in the aggregate, would not have a Material Adverse Effect, and neither the Company nor any of its subsidiaries has received any notice of proceedings relating to the revocation or modification of any such certificate, authorization or permit which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would have a Material Adverse Effect.

(xxii) Title to Property. The Company and its subsidiaries have good and marketable title in fee simple to all real property owned by them, and good and marketable title to all personal property owned by them which is material to the business of the Company and its subsidiaries taken as a whole, in each case free and clear of all liens, encumbrances and defects except such as (A) do not materially affect the value of such property or (B) do not materially interfere with the use made and proposed to be made of such property by the Company and its subsidiaries, or (C) would not have a Material Adverse Effect; and any real property and buildings held under lease by the Company and its subsidiaries are held by them under valid, subsisting and enforceable leases with such exceptions as would not have a Material Adverse Effect, or do not interfere with the use made and proposed to be made of such property and buildings by the Company and its subsidiaries.

(xxiii) Possession of Intellectual Property. Except as would not, singly or in the aggregate, have a Material Adverse Effect, the Company and its subsidiaries own or possess, or can acquire on reasonable terms, all patents, patent rights, licenses, inventions, copyrights, know-how (including trade secrets and other unpatented and/or unpatentable proprietary or confidential information, systems or procedures), trademarks, service marks and trade names currently employed by them in connection with the business now operated by them. Neither the Company nor any of its subsidiaries has received any notice of infringement of or conflict with asserted rights of others with respect to any of the foregoing which, singly or in the aggregate, if the subject of an unfavorable decision, ruling or finding, would have a Material Adverse Effect.

(xxiv) Insurance. Except as would not, singly or in the aggregate, have a Material Adverse Effect, (A) the Company and each of its subsidiaries are insured by insurers of recognized financial responsibility against such losses and risks and in such amounts as are prudent and customary in the businesses in which they are engaged and (B) neither the Company nor any of its subsidiaries has been refused any insurance coverage sought or applied for. Neither the Company nor any of its subsidiaries has any reason to believe that it will not be able to renew its existing insurance coverage as and when such coverage expires or to obtain similar coverage from similar insurers as may be necessary to continue its business at a cost that would not have a Material Adverse Effect.

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(xxv) Taxes. The Company and each of its subsidiaries have filed all federal, state, local and foreign tax returns required to be filed through the date of this Agreement or have requested extensions thereof (except where the failure to file would not, singly or in the aggregate, have a Material Adverse Effect) and have paid all taxes required to be paid thereon (except for cases in which the failure to file or pay would not have a Material Adverse Effect, or, except as currently being contested in good faith and for which reserves required by U.S. GAAP have been created in the financial statements of the Company), and no tax deficiency has been determined adversely to the Company or any of its subsidiaries which has had (nor does the Company nor any of its subsidiaries have any notice or knowledge of any tax deficiency which could reasonably be expected to be determined adversely to the Company or its subsidiaries and which could reasonably be expected to have) a Material Adverse Effect.

(xxvi) Environmental Laws. The Company and its subsidiaries (i) are in compliance with any and all applicable foreign, Federal, state and local laws and regulations relating to the protection of human health and safety, the environment or hazardous or toxic substances or wastes, pollutants or contaminants (“Environmental Laws”), (ii) have received all permits, licenses or other approvals required of them under applicable Environmental Laws to conduct their respective businesses and (iii) are in compliance with all terms and conditions of any such permit, license or approval, except with respect to items (i)-(iii) above where such noncompliance with Environmental Laws, failure to receive required permits, licenses or other approvals or failure to comply with the terms and conditions of such permits, licenses or approvals would not, singly or in the aggregate, have a Material Adverse Effect.

(xxvii) Periodic Review of Costs of Environmental Compliance. There are no costs or liabilities associated with Environmental Laws (including, without limitation, any capital or operating expenditures required for clean-up, closure of properties or compliance with Environmental Laws or any permit, license or approval, any related constraints on operating activities and any potential liabilities to third parties of which the Company has knowledge) which would, singly or in the aggregate, have a Material Adverse Effect.

(xxviii) Accounting Controls and Disclosure Controls. The Company maintains effective internal control over financial reporting (as defined under Rule 13-a15 and 15d-15 of the 1934 Act Regulations) and a system of internal accounting controls sufficient to provide reasonable assurances that: (A) transactions are executed in accordance with management’s general or specific authorization; (B) transactions are recorded as necessary to permit preparation of financial statements in conformity with GAAP and to maintain accountability for assets; (C) access to assets is permitted only in accordance with management’s general or specific authorization; (D) the recorded accountability for assets is compared with the existing assets at reasonable intervals and appropriate action is taken with respect to any differences; and (E) the interactive data in eXtensible Business Reporting Language included or incorporated by reference in the Registration Statement, the General Disclosure Package and the Prospectus fairly present the information called for in all material respects and is prepared in all material respects in accordance with the Commission’s rules and guidelines applicable thereto. Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, since the end of the Company’s most recent audited fiscal year, there has been (1) no material weakness in the Company’s internal control over financial reporting (whether or not remediated) and (2) no change in the Company’s internal control over financial reporting that has materially affected, or is reasonably likely to materially affect, the Company’s internal control over financial reporting. The Company maintains an effective system of disclosure controls and procedures (as defined in Rule 13a-15 and Rule 15d-15 of the 1934 Act Regulations) that are designed to ensure that the information required to be disclosed by the Company in the reports that it files or submits under the 1934 Act is recorded, processed, summarized and reported, within the time periods specified in the Commission’s rules and forms, and is accumulated and communicated to the Company’s management, including its principal executive officer or officers and principal financial officer or officers, as appropriate, to allow timely decisions regarding disclosure.

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(xxix) Compliance with the Sarbanes-Oxley Act. There is and has been no failure on the part of the Company or any of the Company’s directors or officers, in their capacities as such, to comply in all material respects with any applicable provision of the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated in connection therewith, including Section 402 related to loans and Sections 302 and 906 related to certifications.

(xxx) ERISA Compliance. Except as described in the Registration Statement, the General Disclosure Package and the Prospectus, (A) each employee benefit plan, within the meaning of Section 3(3) of the Employee Retirement Income Security Act of 1974, as amended (“ERISA”), for which the Company or any member of its “Controlled Group” (defined as any organization which is a member of a controlled group of corporations within the meaning of Section 414 of the Internal Revenue Code of 1986, as amended (the “Code”)) would have any liability (each, a “Plan”) has been maintained in compliance in all material respects with its terms and the requirements of any applicable statutes, orders, rules and regulations, including but not limited to ERISA and the Code; (B) no prohibited transaction, within the meaning of Section 406 of ERISA or Section 4975 of the Code, has occurred with respect to any Plan which would reasonably be expected to result in material liability, excluding transactions effected pursuant to a statutory or administrative exemption; (C) for each Plan that is subject to the funding rules of Section 412 of the Code or Section 302 of ERISA, no “accumulated funding deficiency” as defined in Section 412 of the Code, whether or not waived, has occurred or is reasonably expected to occur; (D) the fair market value of the assets of each Plan subject to Section 401(a) of the Code exceeds the present value of all benefits accrued under such Plan (determined based on those assumptions used to fund such Plan); (E) no “reportable event” (within the meaning of Section 4043(c) of ERISA) has occurred or is reasonably expected to occur; and (F) neither the Company nor any member of the Controlled Group has incurred, nor reasonably expects to incur, any liability under Title IV of ERISA (other than contributions to the Plan or premiums to the PBGC, in the ordinary course and without default) in respect of a Plan (including a “multiemployer plan,” within the meaning of Section 4001(a)(3) of ERISA).

(xxxi) Investment Company Act. The Company is not required, and upon the issuance and sale of the Notes as herein contemplated and the application of the net proceeds therefrom as described in the Registration Statement, the General Disclosure Package and the Prospectus will not be required, to register as an “investment company” under the Investment Company Act of 1940, as amended.

(xxxii) Absence of Manipulation. Neither the Company nor any subsidiary or other affiliate of the Company has taken, nor will the Company or any such subsidiary or other affiliate take, directly or indirectly, any action which is designed, or would be expected, to cause or result in, or which constitutes, the stabilization or manipulation of the price of any security of the Company to facilitate the sale or resale of the Notes.

(xxxiii) Foreign Corrupt Practices Act. Except as disclosed in the Registration Statement, the General Disclosure Package or the Prospectus, none of the Company, any of its subsidiaries or, to the knowledge of the Company, any director, officer, agent, employee, affiliate or other person acting on behalf of the Company or any of its subsidiaries is aware of or has taken any action, directly or indirectly, that would result in a violation by such persons of either (i) the Foreign Corrupt Practices Act of 1977, as amended, and the rules and regulations thereunder (the “FCPA”), including, without limitation, making use of the mails or any means or instrumentality of interstate

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commerce corruptly in furtherance of an offer, payment, promise to pay or authorization of the payment of any money, or other property, gift, promise to give, or authorization of the giving of anything of value to any “foreign official” (as such term is defined in the FCPA) or any foreign political party or official thereof or any candidate for foreign political office, in contravention of the FCPA, (ii) the U.K. Bribery Act 2010 (the “Bribery Act”) or (iii) any applicable anti-corruption laws and the Company, its subsidiaries and, to the knowledge of the Company, its other affiliates have conducted their businesses in compliance with the FCPA and the Bribery Act. The Company has instituted and maintains policies and procedures designed to ensure, and which are reasonably expected to continue to ensure, continued compliance therewith and neither the Company nor any of its subsidiaries will use, directly or indirectly, the proceeds of the offering in furtherance of an offer, payment, promise to pay, or authorization of the payment or giving of money, or anything else of value, to any person in violation of any applicable anti-corruption laws.

(xxxiv) Anti-Money Laundering Laws. The operations of the Company and its subsidiaries are and have been conducted at all times in compliance with applicable financial recordkeeping and reporting requirements of the Currency and Foreign Transactions Reporting Act of 1970, as amended, the applicable anti-money laundering statutes of all jurisdictions where the Company or any of its subsidiaries conducts business, the rules and regulations thereunder and any related or similar rules, regulations or guidelines, issued, administered or enforced by any Governmental Authority (collectively, the “Anti-Money Laundering Laws”). No action, suit or proceeding by or before any Governmental Authority involving the Company or any of its subsidiaries with respect to the Anti-Money Laundering Laws is pending or, to the knowledge of the Company, threatened.

(xxxv) OFAC. None of the Company, any of its subsidiaries or, to the knowledge of the Company, any director, officer, agent, employee, affiliate or other person acting on behalf of the Company or any of its subsidiaries is or is owned or controlled by one or more Persons that are (A) an individual or entity (“Person”) currently the subject or target of any sanctions administered or enforced by the United States Government, including, without limitation, the U.S. Department of the Treasury’s Office of Foreign Assets Control (“OFAC”), the United Nations Security Council, the European Union, His Majesty’s Treasury, or other relevant sanctions authority (collectively, “Sanctions”) or (B) located, organized or resident in a country or territory that is the subject of Sanctions, including, without limitation, the Crimea, Cuba, Iran, North Korea, Syria, non-Ukrainian-government-controlled regions of Kherson and Zaporizhzhia and the so-called Donetsk People’s Republic or so-called Luhansk People’s Republic or any other covered region of Ukraine identified pursuant to Executive Order 14065. The Company will not use the proceeds of the sale of the Notes, or lend, contribute or otherwise make available such proceeds to any subsidiaries, joint venture partners or other Person, to fund any activities of or business with any Person, or in any country or territory, that, at the time of such funding, is the subject of Sanctions or in any other manner that will result in a violation by any Person (including any Person participating in the transaction, whether as underwriter, advisor, investor or otherwise) of Sanctions.

(xxxvi) Lending and Other Relationships. Except as disclosed in the Registration Statement, the General Disclosure Package and the Prospectus, the Company (A) does not have any material lending or other relationship with any Underwriter or any bank, lending or other affiliate of any Underwriter and (B) does not intend to use any of the proceeds from the sale of the Notes to repay any outstanding debt owed to the Underwriter or any bank, lending or other affiliate of any Underwriter. There are no business relationships or related-party transactions involving the Company or any subsidiary or any other person required to be described in the Registration Statement, the General Disclosure Package or the Prospectus that have not been described as required.

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(xxxvii) [Reserved]

(xxxviii) Cybersecurity. Except as disclosed in the Registration Statement, the General Disclosure Package or the Prospectus, or which would not have a Material Adverse Effect, (A) there has been no security breach or incident, unauthorized access or disclosure, or other compromise of or relating to the Company or its subsidiaries information technology and computer systems, networks, hardware, software, data and databases (including the data and information of their respective customers, employees, suppliers, vendors and any third party data maintained, processed or stored by the Company and its subsidiaries, and any such data processed or stored by third parties on behalf of the Company and its subsidiaries), equipment or technology (collectively, “IT Systems and Data”) and (B) neither the Company nor any of its subsidiaries have been notified of, and have no knowledge of any event or condition that could result in, any security breach or incident, unauthorized access or disclosure or other compromise to their IT Systems and Data. The Company has implemented appropriate controls, policies, procedures, and technological safeguards to maintain and protect the integrity, continuous operation, redundancy and security of their IT Systems and Data reasonably consistent with industry standards and practices, or as required by applicable regulatory standards. The Company and its subsidiaries are presently in material compliance with all applicable laws or statutes and all judgments, orders, rules and regulations of any court or arbitrator or governmental or regulatory authority, internal policies and contractual obligations relating to the privacy and security of IT Systems and Data and to the protection of such IT Systems and Data from unauthorized use, access, misappropriation or modification.

(b) Officer’s Certificates. Any certificate signed by any officer of the Company or any of its subsidiaries delivered to the Representatives or to counsel for the Underwriters shall be deemed a representation and warranty by the Company to each Underwriter as to the matters covered thereby.

SECTION 2. Sale and Delivery to Underwriters; Closing.

(a) The Notes. On the basis of the representations and warranties herein contained and subject to the terms and conditions herein set forth, the Company agrees to sell to each Underwriter, severally and not jointly, and each Underwriter, severally and not jointly, agrees to purchase from the Company, (A) at a purchase price of 99.072% of the principal amount thereof, plus accrued interest, if any, from February 15, 2024 to the Closing Time (as defined below) hereunder, the principal amount of 2034 Notes set forth in the column “Principal Amount of 2034 Notes to be Purchased” opposite the name of such Underwriter in Schedule A and (B) at a purchase price of 97.913% of the principal amount thereof, plus accrued interest, if any, from February 15, 2024 to the Closing Time (as defined below) hereunder, the principal amount of 2054 Notes set forth in the column “Principal Amount of 2054 Notes to be Purchased” opposite the name of such Underwriter in Schedule A.

(b) The Closing Time. Delivery of certificates for the Notes in global form to be purchased by the Underwriters and payment therefor shall be made at the offices of Cleary Gottlieb Steen & Hamilton LLP, One Liberty Plaza, New York, New York, 10006 or at such other place as shall be agreed upon by the Representatives and the Company, at 10:00 A.M. (New York City time) on February 15, 2024 (unless postponed in accordance with the provisions of Section 10) or such other time not later than ten business days after such date as shall be agreed upon by the Representatives and the Company (such time and date of payment and delivery being herein called the “Closing Time”).

(c) Public Offering of the Notes. The Representatives hereby advise the Company that the Underwriters intend to offer for sale to the public, as described in the General Disclosure Package and the Prospectus, their respective portions of the Notes as soon after the Applicable Time as the Representatives, in their sole judgment, have determined is advisable and practicable.

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(d) Payment for the Notes. Payment for the Notes shall be made to the Company at the Closing Time by wire transfer of immediately available funds to a bank account designated by the Company.

It is understood that each Underwriter has authorized the Representatives, for its account, to accept delivery of, receipt for, and make payment of the purchase price for, the Notes which it has agreed to purchase. The Representatives may (but shall not be obligated to) make payment of the purchase price for the Notes to be purchased by any Underwriter whose funds have not been received by the Closing Time, but such payment shall not relieve such Underwriter from its obligations hereunder.

(e) Delivery of the Notes. The Company shall deliver, or cause to be delivered, to the Representatives for the accounts of the several Underwriters certificates for the Notes at the Closing Time, against the irrevocable release of a wire transfer of immediately available funds for the amount of the purchase price therefor. The certificates for the Notes shall be in such denominations and registered in such names and denominations as the Representatives shall have requested at least two full business days prior to the Closing Time and shall be made available for inspection on the business day preceding the Closing Time at a location in New York City, as the Representatives may designate. Time shall be of the essence, and delivery at the time and place specified in this Agreement is a further condition to the obligations of the Underwriters.

SECTION 3. Covenants of the Company. The Company covenants and agrees with each Underwriter as follows:

(a) Compliance with Commission Requests. The Company, subject to Section 3(b) hereof, will comply with the requirements of Rule 430B, and will promptly notify the Representatives, and confirm the notice in writing, (i) when, until the distribution of the Notes has been completed, any post-effective amendment to the Registration Statement or any new registration statement relating to the Notes shall become effective or any amendment or supplement to the General Disclosure Package or the Prospectus shall have been used or filed, as the case may be, including any document incorporated by reference therein, (ii) until the distribution of the Notes has been completed, of the receipt of any comments from the Commission, (iii) of any request by the Commission for any amendment to the Registration Statement or any amendment or supplement to the General Disclosure Package or the Prospectus, including any document incorporated by reference therein, or for additional information, (iv) of the issuance by the Commission of any stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto or any notice of objection to the use of the Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) or of the issuance of any order preventing or suspending the use of any preliminary prospectus or the Prospectus or any amendment or supplement thereto, or of the suspension of the qualification of the Notes for offering or sale in any jurisdiction, or of the initiation or threatening of any proceedings for any of such purposes or of any examination pursuant to Section 8(d) or 8(e) of the 1933 Act concerning the Registration Statement and (v) if the Company becomes the subject of a proceeding under Section 8A of the 1933 Act in connection with the offering of the Notes. The Company will effect all filings required under Rule 424(b), in the manner and within the time period required by Rule 424(b) (without reliance on Rule 424(b)(8)), and will take such steps as it deems necessary to ascertain promptly whether the form of prospectus transmitted for filing under Rule 424(b) was received for filing by the Commission and, in the event that it was not, it will promptly file such prospectus. The Company will make every reasonable effort to prevent the issuance of any stop, prevention or suspension order and, if any such order is issued, to obtain the lifting thereof at the earliest possible moment. The Company shall pay the required Commission filing fees relating to the Notes within the time required by Rule 456(b)(1)(i) of the 1933 Act Regulations without regard to the proviso therein.

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(b) Continued Compliance with Securities Laws. The Company will comply with the 1933 Act, the 1933 Act Regulations, the 1934 Act and the 1934 Act Regulations so as to permit the completion of the distribution of the Notes as contemplated in this Agreement and in the Registration Statement, the General Disclosure Package and the Prospectus. If at any time when a prospectus relating to the Notes is (or, but for the exception afforded by Rule 172 of the 1933 Act Regulations (“Rule 172”), would be) required by the 1933 Act to be delivered in connection with sales of the Notes any event shall occur or condition shall exist as a result of which it is necessary, in the opinion of counsel for the Underwriters or for the Company, to (i) amend the Registration Statement in order that the Registration Statement will not include an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein not misleading, (ii) amend or supplement the General Disclosure Package or the Prospectus in order that the General Disclosure Package or the Prospectus, as the case may be, will not include any untrue statement of a material fact or omit to state a material fact necessary in order to make the statements therein not misleading in the light of the circumstances existing at the time it is delivered to a purchaser or (iii) amend the Registration Statement or amend or supplement the General Disclosure Package or the Prospectus, as the case may be, including, without limitation, any document incorporated therein by reference, in order to comply with the applicable requirements of the 1933 Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations, the Company will promptly (A) give the Representatives written notice of such event or condition, (B) prepare any amendment or supplement as may be necessary to correct such statement or omission or to make the Registration Statement, the General Disclosure Package or the Prospectus comply with such requirements and, a reasonable amount of time prior to any proposed filing or use, furnish the Representatives with copies of any such amendment or supplement and (C) file with the Commission any such amendment or supplement and use its best efforts to have any amendment to the Registration Statement declared effective by the Commission as soon as possible if the Company is no longer eligible to file an automatic shelf registration statement, provided that the Company shall not file or use any such amendment or supplement to which the Representatives or counsel for the Underwriters shall object.

(c) Filing or Use of Amendments or Supplements. The Company has given the Representatives notice of any filings made pursuant to the 1934 Act or 1934 Act Regulations within 48 hours prior to the Applicable Time and will give the Representatives notice of its intention to file or use any amendment to the Registration Statement or any amendment or supplement to the General Disclosure Package or the Prospectus, whether pursuant to the 1933 Act, the 1933 Act Regulations, the 1934 Act or the 1934 Act Regulations or otherwise, from the Applicable Time to the later of (i) the time when a prospectus relating to the Notes is no longer required by the 1933 Act (without giving effect to Rule 172) to be delivered in connection with sales of the Notes and (ii) the Closing Time, and will furnish the Representatives with copies of any such amendment or supplement a reasonable amount of time prior to such proposed filing or use, as the case may be, and will not file or use any such amendment or supplement to which the Representatives or counsel for the Underwriters shall reasonably object.

(d) Delivery of Registration Statements. The Company has furnished or will deliver to the Representatives and counsel for the Underwriters, without charge, one signed copy of the Registration Statement as originally filed and each amendment thereto (including conformed copies of exhibits filed therewith or incorporated by reference therein and documents incorporated or deemed to be incorporated by reference therein) and signed copies of all consents and certificates of experts, and will also upon request deliver to the Representatives, without charge, a conformed copy of the Registration Statement as originally filed and each amendment thereto (without exhibits) for each of the Underwriters. The copies of the Registration Statement and each amendment thereto furnished to the Underwriters will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

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(e) Delivery of Prospectuses. The Company has delivered to each Underwriter, without charge, as many copies of each preliminary prospectus as such Underwriter reasonably requested, and the Company hereby consents to the use of such copies for purposes permitted by the 1933 Act. The Company will furnish to each Underwriter, without charge, during the period when a prospectus relating to the Notes is (or, but for the exception afforded by Rule 172, would be) required by the 1933 Act to be delivered in connection with sales of the Notes, such number of copies of the Prospectus (as amended or supplemented) as such Underwriter may reasonably request. The Prospectus and any amendments or supplements thereto furnished to the Underwriters will be identical to the electronically transmitted copies thereof filed with the Commission pursuant to EDGAR, except to the extent permitted by Regulation S-T.

(f) Blue Sky Qualifications. The Company will use its reasonable best efforts, in cooperation with the Underwriters, to qualify or register the Notes for offering and sale under (or obtain exemptions from the application of) the applicable securities laws of such states and non-U.S. jurisdictions as the Representatives may designate and to maintain such qualifications in effect so long as required to complete the distribution of the Notes; provided, however, that the Company shall not be obligated to file any general consent to service of process or to qualify as a foreign corporation or as a dealer in securities in any jurisdiction in which it is not so qualified or to subject itself to taxation in respect of doing business in any jurisdiction in which it is not otherwise so subject. The Company will advise the Representatives promptly of the suspension of the qualification or registration of (or any such exemption relating to) the Notes for offering, sale or trading in any jurisdiction or any initiation or threat of any proceeding for any such purpose, and in the event of the issuance of any order suspending such qualification, registration or exemption, the Company shall use its reasonable best efforts to obtain the withdrawal thereof as soon as practicable.

(g) Earnings Statements. The Company will timely file such reports pursuant to the 1934 Act as are necessary in order to make generally available to its securityholders as soon as practicable an earnings statement for the purposes of, and to provide to the Underwriters the benefits contemplated by, the last paragraph of Section 11(a) of the 1933 Act (which may be satisfied by a filing on the Commission’s EDGAR system).

(h) Use of Proceeds. The Company will use the net proceeds received by it from the sale of the Notes in the manner specified in the Registration Statement, the General Disclosure Package and the Prospectus under the caption “Use of Proceeds.”

(i) [Reserved].

(j) Restriction on Sale of Notes. During the period commencing on the date hereof and ending at the Closing Time, the Company will not, without the prior written consent of the Representatives (which consent may be withheld at the Representatives’ discretion), (i) directly or indirectly, offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant for the sale of, or lend or otherwise transfer or dispose of, the Notes or any securities that are substantially similar to the Notes, whether owned as of the date hereof or hereafter acquired or with respect to which such person has or hereafter acquires the power of disposition, or file, or cause to be filed, any registration statement under the 1933 Act with respect to any of the foregoing or (ii) enter into any swap or any other agreement or any transaction that transfers, in whole or in part, directly or indirectly, the economic consequence of ownership of the Notes or such other securities, whether any such transaction, swap or other agreement described in clause (i) or (ii) above is to be settled by delivery of any Notes or such other securities, in cash or otherwise. The foregoing sentence shall not apply to the Notes to be sold hereunder.

(k) Reporting Requirements. The Company, during the period when a prospectus relating to the Notes is (or, but for the exception afforded by Rule 172, would be) required by the 1933 Act to be delivered in connection with sales of the Notes, will file all documents required to be filed with the Commission pursuant to the 1934 Act within the time periods required by, and each such document will meet the applicable requirements of, the 1934 Act and 1934 Act Regulations.

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(l) Final Term Sheet. The Company will prepare a final term sheet (a “Final Term Sheet”) containing only a description of the final terms of the Notes and their offering, in the form approved by the Underwriters and attached as Schedule D hereto, and acknowledges that the Final Term Sheet is an Issuer Free Writing Prospectus and will comply with its related obligations set forth in Section 3(m) hereof. The Company will furnish or make available to each Underwriter, without charge, copies of the Final Term Sheet promptly upon its completion.

(m) Issuer Free Writing Prospectuses. The Company agrees that, unless it obtains the prior written consent of the Representatives, it will not make any offer relating to the Notes that would constitute an Issuer Free Writing Prospectus or that would otherwise constitute a “free writing prospectus,” or a portion thereof, required to be filed by the Company with the Commission or retained by the Company under Rule 433; provided that the Representatives will be deemed to have consented to the Issuer General Use Free Writing Prospectuses listed on Schedule B hereto and any “road show that is a written communication” within the meaning of Rule 433(d)(8)(i) that has been reviewed by the Representatives. The Company represents that it has treated or agrees that it will treat each such free writing prospectus consented to, or deemed consented to, by the Representatives as an Issuer Free Writing Prospectus and that it has complied and will comply with the applicable requirements of Rule 433 with respect thereto, including timely filing with the Commission where required, legending and record keeping. If at any time following issuance of an Issuer Free Writing Prospectus there occurred or occurs an event or development as a result of which such Issuer Free Writing Prospectus conflicted or would conflict with the information contained in the Registration Statement, any preliminary prospectus or the Prospectus or included or would include an untrue statement of a material fact or omitted or would omit to state a material fact necessary in order to make the statements therein, in the light of the circumstances existing at that subsequent time, not misleading, the Company will promptly notify the Representatives in writing and will promptly amend or supplement, at its own expense, such Issuer Free Writing Prospectus to eliminate or correct such conflict, untrue statement or omission.

(n) [Reserved].

(o) Eligibility of Automatic Shelf Registration Statement Form. Until the earlier of (i) no Notes remaining unsold by the Underwriters and (b) the expiry of the period when a prospectus relating to the Notes is (or, but for the exception afforded by Rule 172, would be) required by the 1933 Act to be delivered in connection with sales of the Notes, the Company receives a notice from the Commission pursuant to Rule 401(g)(2) or otherwise ceases to be eligible to use the automatic shelf registration statement form, the Company will (i) promptly notify the Representatives in writing, (ii) promptly file a new registration statement or post-effective amendment on the proper form relating to such Notes, in a form and substance satisfactory to the Underwriters, (iii) use its best efforts to cause such registration statement or post-effective amendment to be declared effective as soon as practicable and (iv) promptly notify the Representatives in writing of such effectiveness. The Company will take all other action necessary or appropriate to permit the public offering and sale of the Notes to continue as contemplated in the Registration Statement that was the subject of the Rule 401(g)(2) notice or for which the Company has otherwise become ineligible. References herein to the “Registration Statement” shall include such new registration statement or post-effective amendment, as the case may be.

(p) [Reserved].

(q) No Manipulation of Price. The Company will not take, directly or indirectly, any action designed to cause or result in, or that has constituted or might reasonably be expected to constitute, under the 1934 Act or otherwise, the stabilization or manipulation of the price of any securities of the Company to facilitate the sale or resale of the Notes.

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(r) DTC. The Company will cooperate with the Underwriters and use its reasonable best efforts to permit the Notes to be eligible for clearance, settlement and trading through the facilities of DTC.

SECTION 4. Payment of Expenses.

(a) Expenses. The Company will pay or cause to be paid all expenses incident to the performance of its obligations under this Agreement, including without limitation (i) the preparation, printing and filing of the Registration Statement (including financial statements and exhibits) as originally filed and each amendment thereto, (ii) the preparation, printing and delivery to the Underwriters of copies of each preliminary prospectus, each Issuer Free Writing Prospectus and the Prospectus and any amendments or supplements thereto as may, in each case, be reasonably requested for use in connection with the offering and sale of the Notes and any costs associated with electronic delivery of any of the foregoing by the Underwriters to investors, (iii) the preparation, issuance and delivery of the Notes to the Underwriters, including any transfer taxes and any stamp or other duties payable upon the sale, issuance or delivery of the Notes to the Underwriters, (iv) all costs and expenses incurred in connection with the preparation and execution of the Operative Documents and the DTC Agreement, (v) the fees and disbursements of the Company’s counsel, accountants and other advisors, (vi) the qualification of the Notes under securities laws in accordance with the provisions of Section 3(f) hereof, including filing fees and the reasonable fees and disbursements of counsel for the Underwriters in connection therewith and in connection with the preparation of the Blue Sky Survey and any supplement thereto, in an amount not to exceed $15,000, (vii) the costs and expenses of the Company relating to investor presentations on any “road show” undertaken in connection with the marketing of the Notes, including, without limitation, expenses associated with the production of road show slides and graphics, fees and expenses of any consultants engaged in connection with the road show presentations, travel and lodging expenses of the Representatives and officers of the Company and any such consultants, and the cost of aircraft and other transportation chartered in connection with the road show, (viii) the filing fees incident to, and the reasonable fees and disbursements of counsel to the Underwriters in connection with, the review by FINRA, if required, of the terms of the sale of the Notes, (ix) any fees payable in connection with the rating of the Notes by the rating agencies, (x) the fees and expenses of the Trustee, including the reasonable fees and disbursements of counsel for the Trustee in connection with the Indenture and the Notes, (xi) the fees and expenses of making the Notes eligible for clearance, settlement and trading through the facilities of DTC, and (xii) all other fees, costs and expenses incurred in connection with the performance of its obligations hereunder for which provision is not otherwise made in this Section. Except as provided in this Section 4 and Sections 6, 7 and 9(c) hereof, the Underwriters shall pay their own expenses, including the fees and disbursements of their counsel.

(b) Termination of Agreement. If this Agreement is terminated by the Representatives in accordance with the provisions of Section 5 or Section 9(a)(i) or (iii) hereof, the Company shall reimburse the Underwriters for all of their out-of-pocket expenses, including the reasonable fees and disbursements of counsel for the Underwriters.

SECTION 5. Conditions of Underwriters’ Obligations. The obligations of the several Underwriters hereunder are subject to the accuracy of the representations and warranties of the Company contained herein or in certificates of any officer of the Company or any of its subsidiaries delivered pursuant to the provisions hereof, to the performance by the Company of its covenants and other obligations hereunder, and to the following further conditions:

(a) Effectiveness of Registration Statement, etc. The Registration Statement was filed by the Company with the Commission not earlier than three years prior to the date hereof and became effective upon filing in accordance with Rule 462(e). Each preliminary prospectus, each Issuer Free Writing Prospectus and the Prospectus have been filed as required by Rule 424(b) (without reliance on Rule

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424(b)(8)) and Rule 433, as applicable, within the time period prescribed by, and in compliance with, the 1933 Act Regulations. No stop order suspending the effectiveness of the Registration Statement or any post-effective amendment thereto has been issued under the 1933 Act, no notice of objection to the use of the Registration Statement or any post-effective amendment thereto pursuant to Rule 401(g)(2) has been received by the Company, no order preventing or suspending the use of any preliminary prospectus or the Prospectus or any amendment or supplement thereto has been issued and no proceedings for any of those purposes have been instituted or are pending or, to the Company’s knowledge, contemplated. The Company has complied with each request (if any) from the Commission for additional information. The Company shall have paid the required Commission filing fees relating to the Notes within the time period required by Rule 456(b)(1)(i) of the 1933 Act Regulations without regard to the proviso therein and otherwise in accordance with Rules 456(b) and 457(r) of the 1933 Act Regulations.

(b) Opinion of Counsel for Company. At the Closing Time, the Representatives shall have received (i) a written opinion dated the Closing Time, from Seth Diehl, Associate General Counsel – Securities & Governance of the Company, in form and substance reasonably satisfactory to the Representatives and (ii) a written opinion to the effect set forth in Exhibit A hereto and a negative assurance letter in customary form, each dated the Closing Time, of Gibson, Dunn & Crutcher LLP, counsel for the Company, in form and substance reasonably satisfactory to the Representatives, together with signed or reproduced copies of such letter for each of the other Underwriters. Such counsel may also state that, insofar as such opinion involves factual matters, they have relied, to the extent they deem proper, upon certificates of officers and other representatives of the Company and its subsidiaries and certificates of public officials.

(c) Opinion of Counsel for Underwriters. At the Closing Time, the Representatives shall have received an opinion and negative assurance letter, each dated the Closing Time, of Cleary Gottlieb Steen & Hamilton LLP, counsel for the Underwriters, together with signed or reproduced copies of such letter for each of the other Underwriters with respect to the matters reasonably requested by the Representatives. In giving such opinion, such counsel may rely, as to all matters governed by the laws of jurisdictions other than the law of the State of New York, the General Corporation Law of the State of Delaware and the federal securities laws of the United States, upon the opinions of counsel satisfactory to the Representatives. Such counsel may also state that, insofar as such opinion involves factual matters, they have relied, to the extent they deem proper, upon certificates of officers and other representatives of the Company and its subsidiaries and certificates of public officials.

(d) Officer’s Certificate. At the Closing Time, the Representatives shall have received a certificate of the chief financial or chief accounting officer of the Company, dated the Closing Time, to the effect that (i) since the date hereof, there has been no Material Adverse Change, (ii) the representations and warranties of the Company in this Agreement are true and correct with the same force and effect as though expressly made at and as of the Closing Time, except those representations that address matters only as of a particular date, which are true and correct as of such sate, (iii) the Company has complied with all agreements and satisfied all conditions on its part to be performed or satisfied at or prior to the Closing Time, and (iv) the conditions specified in Section 5(a) hereof have been satisfied.

(e) [Reserved]

(f) Accountant’s Comfort Letter. At the time of the execution of this Agreement, the Representatives shall have received from Ernst & Young LLP a letter, dated such date, in form and substance satisfactory to the Representatives, together with signed or reproduced copies of such letter for each of the other Underwriters, containing statements and information of the type ordinarily included in accountants’ “comfort letters” to underwriters with respect to the financial statements and financial information contained in the Registration Statement, the General Disclosure Package and the Prospectus.

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(g) Bring-down Comfort Letter. At the Closing Time, the Representatives shall have received from Ernst & Young LLP a letter, dated as of the Closing Time, to the effect that they reaffirm the statements made in the letter furnished pursuant to Section 5(e) hereof, except that the specified date referred to shall be a date not more than three business days prior to the Closing Time.

(h) [Reserved].

(i) [Reserved].

(j) No Important Changes. (i) Since the execution of this Agreement or the respective dates of which information is given in the Registration Statement, the General Disclosure Package or the Prospectus, there shall not have occurred any Material Adverse Change, which is, in the sole judgment of the Representatives (other than a defaulting Underwriter under Section 10 hereof), so material and adverse as to make it impractical or inadvisable to proceed with the offering or delivery of the Notes, (ii) since the execution of this Agreement there shall not have been any change or decrease specified in the letter or letters referred to in Section 5 (f) hereof which is, in the judgment of the Representatives, so material and adverse as to make it impractical or inadvisable to proceed with the offering or delivery of the Notes and (iii) since the execution of this Agreement there shall not have been any decrease in or withdrawal of the rating of any securities of the Company or any of its subsidiaries by any “nationally recognized statistical rating organization” (as defined for purposes of Section 3(a)(62) of the 1934 Act) or any notice given of any intended or potential decrease in or withdrawal of any such rating or of a possible change in any such rating that does not indicate the direction of the possible change.

(k) Ratings Letters. At the time of execution of this Agreement, the Company shall have delivered to the Representatives letters from Moody’s Investors Services, Inc., S&P Global Inc. and Fitch Ratings assigning a rating to the Notes of Baa2, BBB and BBB+, respectively.

(l) Clearance, Settlement and Trading. The Notes shall be eligible for clearance, settlement and trading through the facilities of DTC.

(m) Additional Documents. At the Closing Time, counsel for the Underwriters shall have been furnished with such documents and opinions as they may reasonably require for the purpose of enabling them to pass upon the issuance and sale of the Notes as herein contemplated, or in order to evidence the accuracy of any of the representations or warranties, or the fulfillment of any of the conditions, herein contained.

(n) Termination of Agreement. If any condition specified in this Section shall not have been fulfilled when and as required to be fulfilled, this Agreement may be terminated by the Representatives by notice to the Company at any time at or prior to the Closing Time, and such termination shall be without liability of any party to any other party except as provided in Section 4 hereof and except that Sections 1, 6, 7, 8, 14, 15 and 16 shall survive any such termination and remain in full force and effect.

SECTION 6. Indemnification.

(a) Indemnification of Underwriters. The Company agrees to indemnify and hold harmless each Underwriter, its affiliates (as such term is defined in Rule 501(b) of the 1933 Act Regulations), selling agents, officers and directors and each person, if any, who controls any Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act against any and all loss, liability, claim, damage and expense whatsoever, as incurred, arising out of any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement (or any amendment thereto), including any information deemed to be a part thereof pursuant to Rule 430B, or the omission or alleged omission

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therefrom of a material fact required to be stated therein or necessary to make the statements therein not misleading or arising out of any untrue statement or alleged untrue statement of a material fact included (A) in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) or (B) in any materials or information provided to investors by, or with the approval of, the Company in connection with the marketing of the offering of the Notes (“Marketing Materials”), including any roadshow or investor presentations made to investors by the Company (whether in person or electronically), or the omission or alleged omission in any preliminary prospectus, any Issuer Free Writing Prospectus, the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) or in any Marketing Materials of a material fact necessary in order to make the statements therein, in the light of the circumstances under which they were made, not misleading; provided, however, that this indemnity agreement shall not apply to any loss, liability, claim, damage or expense to the extent arising out of any untrue statement or omission or alleged untrue statement or omission made in the Registration Statement (or any amendment thereto), including any information deemed to be a part thereof pursuant to Rule 430B, or in the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Underwriter Information.

(b) Indemnification of Company, Directors and Officers. Each Underwriter severally agrees to indemnify and hold harmless the Company, its directors, each of its officers who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act against any and all loss, liability, claim, damage and expense described in the indemnity contained in Section 6(a) hereof, as incurred, but only with respect to untrue statements or omissions, or alleged untrue statements or omissions, made in the Registration Statement (or any amendment thereto), including any information deemed to be a part thereof pursuant to Rule 430B, or in the General Disclosure Package or the Prospectus (or any amendment or supplement thereto) in reliance upon and in conformity with the Underwriter Information. The Company hereby acknowledges that the only Underwriter Information is: (A) the names of such Underwriter as presented on the front and back cover of the preliminary prospectus and the Prospectus and (B) the statements set forth (i) under the caption “Underwriting” in the table immediately following the first paragraph thereunder and (ii) under the caption “Underwriting” in the eighth paragraph and the ninth paragraph, each as set forth in the preliminary prospectus and the Prospectus.

(c) Actions against Parties; Notification. Each indemnified party shall give notice as promptly as reasonably practicable to each indemnifying party of any action commenced against it in respect of which indemnity may be sought hereunder, but failure to so notify an indemnifying party shall not relieve such indemnifying party from any liability hereunder to the extent it is not materially prejudiced as a result thereof and in any event shall not relieve it from any liability which it may have otherwise than on account of this indemnity agreement. In the case of parties indemnified pursuant to Section 6(a) hereof, counsel to the indemnified parties shall be selected by the Representatives, and, in the case of parties indemnified pursuant to Section 6(b) hereof, counsel to the indemnified parties shall be selected by the Company. An indemnifying party may participate at its own expense in the defense of any such action; provided, however, that counsel to the indemnifying party shall not (except with the prior written consent of the indemnified party) also be counsel to the indemnified party. In no event shall the indemnifying parties be liable for fees and expenses of more than one counsel (in addition to any local counsel) separate from their own counsel for all indemnified parties in connection with any one action or separate but similar or related actions in the same jurisdiction arising out of the same general allegations or circumstances. No indemnifying party shall, without the prior written consent of the indemnified parties, settle or compromise or consent to the entry of any judgment with respect to any litigation, or any investigation or proceeding by any Governmental Authority, commenced or threatened, or any claim whatsoever in respect of which indemnification or contribution could be sought under this Section 6 or Section 7 hereof (whether or not the indemnified parties are actual or potential parties thereto), unless such settlement, compromise or consent (i) includes an unconditional release of each indemnified party from all liability arising out of such litigation, investigation, proceeding or claim and (ii) does not include a statement as to or an admission of fault, culpability or a failure to act by or on behalf of any indemnified party.

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(d) Settlement without Consent if Failure to Reimburse. If at any time an indemnified party shall have requested an indemnifying party to reimburse the indemnified party for fees and expenses of counsel, such indemnifying party agrees that it shall be liable for any settlement of the nature contemplated by Section 6(a) effected without its written consent if (i) such settlement is entered into more than 45 days after receipt by such indemnifying party of the aforesaid request, (ii) such indemnifying party shall have received notice of the terms of such settlement at least 30 days prior to such settlement being entered into and (iii) such indemnifying party shall not have reimbursed such indemnified party in accordance with such request prior to the date of such settlement.

SECTION 7. Contribution. If the indemnification provided for in Section 6 hereof is for any reason unavailable to or insufficient to hold harmless an indemnified party in respect of any losses, liabilities, claims, damages or expenses referred to therein, then each indemnifying party shall contribute to the aggregate amount of such losses, liabilities, claims, damages and expenses incurred by such indemnified party, as incurred, (i) in such proportion as is appropriate to reflect the relative benefits received by the Company, on the one hand, and the Underwriters, on the other hand, from the offering of the Notes pursuant to this Agreement or (ii) if the allocation provided by clause (i) is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Company, on the one hand, and the Underwriters, on the other hand, in connection with the statements or omissions which resulted in such losses, liabilities, claims, damages or expenses, as well as any other relevant equitable considerations.

The relative benefits received by the Company, on the one hand, and the Underwriters, on the other hand, in connection with the offering of the Notes pursuant to this Agreement shall be deemed to be in the same respective proportions as the total net proceeds from the offering of the Notes pursuant to this Agreement (before deducting expenses) received by the Company, on the one hand, and the total underwriting discount received by the Underwriters, on the other hand, in each case as set forth on the cover of the Prospectus, bear to the aggregate initial public offering price of the Notes as set forth on the cover of the Prospectus.

The relative fault of the Company, on the one hand, and the Underwriters, on the other hand, shall be determined by reference to, among other things, whether any such untrue or alleged untrue statement of a material fact or omission or alleged omission to state a material fact relates to information supplied by the Company or by the Underwriters and the parties’ relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.

The Company and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 7 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation which does not take account of the equitable considerations referred to above in this Section 7. The aggregate amount of losses, liabilities, claims, damages and expenses incurred by an indemnified party and referred to above in this Section 7 shall be deemed to include any legal or other expenses reasonably incurred by such indemnified party in investigating, preparing or defending against any litigation, or any investigation or proceeding by any Governmental Authority, commenced or threatened, or any claim whatsoever based upon any such untrue or alleged untrue statement or omission or alleged omission.

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Notwithstanding the provisions of this Section 7, no Underwriter shall be required to contribute any amount in excess of the underwriting discount received by such Underwriter in connection with the Notes underwritten by it and distributed to the public.

No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation.

For purposes of this Section 7, each person, if any, who controls an Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act and each Underwriter’s affiliates, officers, directors and selling agents shall have the same rights to contribution as such Underwriter, and each director of the Company, each officer of the Company who signed the Registration Statement, and each person, if any, who controls the Company within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act shall have the same rights to contribution as the Company. The Underwriters’ respective obligations to contribute pursuant to this Section 7 are several in proportion to the aggregate principal amount of Notes set forth opposite their respective names in Schedule A hereto and not joint.

SECTION 8. Representations, Warranties and Agreements to Survive. All representations, warranties and agreements contained in this Agreement or in certificates of officers of the Company or any of its subsidiaries submitted pursuant hereto shall remain operative and in full force and effect regardless of (i) any investigation made by or on behalf of any Underwriter or its affiliates, officers, directors or selling agents, any person controlling any Underwriter or the Company’s officers or directors or any person controlling the Company and (ii) delivery of and payment for the Notes.

SECTION 9. Termination of Agreement.

(a) Termination. The Representatives may terminate this Agreement, by notice to the Company, at any time at or prior to the Closing Time, (i) if there has been, in the judgment of the Representatives, since the time of execution of this Agreement or since the respective dates as of which information is given in the Registration Statement, the General Disclosure Package or the Prospectus, any Material Adverse Change, or (ii) if there has occurred any material adverse change in the financial markets in the United States or the international financial markets, any outbreak of hostilities or escalation thereof or other calamity or crisis or any change or development involving a prospective change in national or international political, financial or economic conditions, in each case the effect of which is such as to make it, in the judgment of the Representatives, impracticable or inadvisable to proceed with the completion of the offering of the Notes or to enforce contracts for the sale of the Notes, or (iii) if trading in any securities of the Company has been suspended or materially limited by the Commission or the Nasdaq Global Select Market, or (iv) if trading generally on the NYSE or the Nasdaq Global Select Market has been suspended or materially limited, or minimum or maximum prices for trading have been fixed, or maximum ranges for prices have been required, by any of said exchanges or by order of the Commission, FINRA or any other Governmental Authority, or (v) if a material disruption has occurred in commercial banking or securities settlement or clearance services in the United States or with respect to Clearstream or Euroclear systems in Europe, or (vi) if a banking moratorium has been declared by either Federal or New York State authorities.

(b) Liabilities. If this Agreement is terminated pursuant to this Section, such termination shall be without liability of any party to any other party except as provided in Section 4 hereof, and provided further that Sections 1, 6, 7, 8, 14, 15 and 16 shall survive such termination and remain in full force and effect.

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SECTION 10. Default by One or More of the Underwriters. If one or more of the Underwriters shall fail at the Closing Time to purchase the Notes which it or they are obligated to purchase under this Agreement (the “Defaulted Securities”), the Representatives shall have the right, within 24 hours thereafter, to make arrangements for one or more of the non-defaulting Underwriters, or any other underwriters, to purchase all, but not less than all, of the Defaulted Securities in such amounts as may be agreed upon and upon the terms herein set forth; if, however, the Representatives shall not have completed such arrangements within such 24-hour period, then:

(i) if the aggregate principal amount of Defaulted Securities does not exceed 10% of the aggregate principal amount of Notes to be purchased on such date, each of the non-defaulting Underwriters shall be obligated, severally and not jointly, to purchase the full amount thereof in the proportions that their respective underwriting obligations hereunder bear to the underwriting obligations of all non-defaulting Underwriters, or

(ii) if the aggregate principal amount of Defaulted Securities exceeds 10% of the aggregate principal amount of Notes to be purchased on such date, this Agreement shall terminate without liability on the part of any non-defaulting Underwriter.

No action taken pursuant to this Section shall relieve any defaulting Underwriter from liability in respect of its default.

In the event of any such default which does not result in a termination of this Agreement either the Representatives or the Company shall have the right to postpone the Closing Time for a period not exceeding seven days in order to effect any required changes in the Registration Statement, the General Disclosure Package or the Prospectus or in any other documents or arrangements. As used herein, the term “Underwriter” includes any person substituted for an Underwriter under this Section 10.

SECTION 11. Notices. All notices and other communications hereunder shall be in writing and shall be deemed to have been duly given if mailed or transmitted by any standard form of telecommunication.

Notices to the Underwriters shall be directed to the Representatives at:

BofA Securities, Inc.

114 W 47^th St.

NY8-114-07-01

New York, New York 10036

Facsimile: 1 (646) 855-5958

Email: dg.hg_ua_notices@bofa.com

Attention: High Grade Transaction Management/Legal

and

J.P. Morgan Securities LLC

383 Madison Avenue

New York, New York 10179

Attention: Investment Grade Syndicate Desk

Facsimile: 1 (212) 834-6081

with a copy to:

Cleary Gottlieb Steen & Hamilton LLP

One Liberty Plaza

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New York, New York 10006

Facsimile: (212) 225-3999

Attention: Jorge U. Juantorena

and

Notices to the Company shall directed to:

Arthur J. Gallagher & Co.

2850 Golf Road, 10th Floor

Rolling Meadows, Illinois 60008

Attention: General Counsel

with a copy to:

Gibson, Dunn & Crutcher LLP

200 Park Avenue

New York, New York 10166

Facsimile: (212) 351-5237

Attention: Andrew L. Fabens

SECTION 12. No Advisory or Fiduciary Relationship. The Company acknowledges and agrees that (a) the purchase and sale of the Notes pursuant to this Agreement, including the determination of the public offering price of the Notes and any related discounts and commissions, is an arm’s-length commercial transaction between the Company, on the one hand, and the several Underwriters, on the other hand, and the Company is capable of evaluating and understanding and understands and accepts the terms, risks and conditions of the transactions contemplated by this Agreement, (b) in connection with the offering of the Notes and the process leading thereto, each Underwriter is and has been acting solely as a principal and is not the agent or fiduciary of the Company or any of its subsidiaries or their respective stockholders, creditors, employees or any other party, (c) no Underwriter has assumed or will assume an advisory or fiduciary responsibility in favor of the Company with respect to the offering of the Notes or the process leading thereto (irrespective of whether such Underwriter has advised or is currently advising the Company or any of its subsidiaries on other matters) or any other obligation to the Company with respect to the offering of the Notes except the obligations expressly set forth in this Agreement, (d) the Underwriters and their respective affiliates may be engaged in a broad range of transactions that involve interests that differ from those of the Company, (e) the Underwriters have not provided any legal, accounting, financial, regulatory, investment or tax advice with respect to the offering of the Notes and the Company has consulted its own respective legal, accounting, financial, regulatory and tax advisors to the extent it deemed appropriate and (f) none of the activities of the Underwriters in connection with the transactions contemplated herein constitutes a recommendation, investment advice or solicitation of any action by the Underwriters with respect to any entity or natural person.

SECTION 13. Recognition of the U.S. Special Resolution Regimes.

(a) In the event that any Underwriter that is a Covered Entity becomes subject to a proceeding under a U.S. Special Resolution Regime, the transfer from such Underwriter of this Agreement, and any interest and obligation in or under this Agreement, will be effective to the same extent as the transfer would be effective under the U.S. Special Resolution Regime if this Agreement, and any such interest and obligation, were governed by the laws of the United States or a state of the United States.

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(b) In the event that any Underwriter that is a Covered Entity or a BHC Act Affiliate of such Underwriter becomes subject to a proceeding under a U.S. Special Resolution Regime, Default Rights under this Agreement that may be exercised against such Underwriter are permitted to be exercised to no greater extent than such Default Rights could be exercised under the U.S. Special Resolution Regime if this Agreement were governed by the laws of the United States or a state of the United States.

For purposes of this Section 13, a “BHC Act Affiliate” has the meaning assigned to the term “affiliate” in, and shall be interpreted in accordance with, 12 U.S.C. § 1841(k). “Covered Entity” means any of the following: (i) a “covered entity” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 252.82(b); (ii) a “covered bank” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 47.3(b); or (iii) a “covered FSI” as that term is defined in, and interpreted in accordance with, 12 C.F.R. § 382.2(b). “Default Right” has the meaning assigned to that term in, and shall be interpreted in accordance with, 12 C.F.R. §§ 252.81, 47.2 or 382.1, as applicable. “U.S. Special Resolution Regime” means each of (i) the Federal Deposit Insurance Act and the regulations promulgated thereunder and (ii) Title II of the Dodd-Frank Wall Street Reform and Consumer Protection Act and the regulations promulgated thereunder.

SECTION 14. Parties. This Agreement shall each inure to the benefit of and be binding upon the Underwriters and the Company and their respective successors. Nothing expressed or mentioned in this Agreement is intended or shall be construed to give any person, firm or corporation, other than the Underwriters and the Company and their respective successors and the controlling persons, affiliates, selling agents, officers and directors referred to in Sections 6 and 7 and their heirs and legal representatives, any legal or equitable right, remedy or claim under or in respect of this Agreement or any provision herein contained. This Agreement and all conditions and provisions hereof are intended to be for the sole and exclusive benefit of the Underwriters and the Company and their respective successors, and said controlling persons, affiliates, selling agents, officers and directors and their heirs and legal representatives, and for the benefit of no other person, firm or corporation. No purchaser of Notes from any Underwriter shall be deemed to be a successor by reason merely of such purchase.

SECTION 15. Trial by Jury. Each of the Company (on its behalf and, to the extent permitted by applicable law, on behalf of its stockholders and affiliates) and the Underwriters hereby irrevocably waives, to the fullest extent permitted by applicable law, any and all right to trial by jury in any legal proceeding arising out of or relating to this Agreement or the transactions contemplated hereby.

SECTION 16. GOVERNING LAW. THIS AGREEMENT AND ANY CLAIM, CONTROVERSY OR DISPUTE ARISING UNDER OR RELATED TO THIS AGREEMENT SHALL BE GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE LAWS OF THE STATE OF NEW YORK WITHOUT REGARD TO ITS CHOICE OF LAW PROVISIONS.

SECTION 17. Consent to Jurisdiction. Each of the parties hereto agrees that any legal suit, action or proceeding arising out of or based upon this Agreement or the transactions contemplated hereby shall be instituted in (i) the federal courts of the United States of America located in the City and County of New York, Borough of Manhattan or (ii) the courts of the State of New York located in the City and County of New York, Borough of Manhattan (collectively, the “Specified Courts”), and irrevocably submits to the exclusive jurisdiction (except for proceedings instituted in regard to the enforcement of a judgment of any Specified Court, as to which such jurisdiction is non-exclusive) of the Specified Courts in any such suit, action or proceeding. Service of any process, summons, notice or document by mail to such party’s address set forth above shall be effective service of process for any suit, action or proceeding brought in any Specified Court. Each of the parties hereto irrevocably and unconditionally waives any objection to the laying of venue of any suit, action or proceeding in the Specified Courts and irrevocably and unconditionally waive and agree not to plead or claim in any Specified Court that any such suit, action or proceeding brought in any Specified Court has been brought in an inconvenient forum.

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SECTION 18. TIME. TIME SHALL BE OF THE ESSENCE OF THIS AGREEMENT. EXCEPT AS OTHERWISE SET FORTH HEREIN, SPECIFIED TIMES OF DAY REFER TO NEW YORK CITY TIME.

SECTION 19. Counterparts. This Agreement may be executed in any number of counterparts, each of which shall be deemed to be an original, but all such counterparts shall together constitute one and the same Agreement. Counterparts may be delivered via facsimile, electronic mail (including any electronic signature covered by the U.S. federal ESIGN Act of 2000, Uniform Electronic Transactions Act, the Electronic Signatures and Records Act or other applicable law, e.g., www.docusign.com) or other transmission method and any counterpart so delivered shall be deemed to have been duly and validly delivered and be valid and effective for all purposes.

SECTION 20. Effect of Headings. The Section headings herein are for convenience only and shall not affect the construction hereof.

SECTION 21. Partial Unenforceability. The invalidity or unenforceability of any Section, paragraph or provision of this Agreement shall not affect the validity or enforceability of any other Section, paragraph or provision hereof. If any Section, paragraph or provision of this Agreement is for any reason determined to be invalid or unenforceable, there shall be deemed to be made such minor changes (and only such minor changes) as are necessary to make it valid and enforceable.

SECTION 22. Research Analyst Independence. The Company acknowledges that the Underwriters’ research analysts and research departments are required to be independent from their respective investment banking divisions and are subject to certain regulations and internal policies, and that such Underwriters’ research analysts may hold views and make statements or investment recommendations and/or publish research reports with respect to the Company, its subsidiaries and/or the offering of the Notes that differ from the views of their respective investment banking divisions. The Company hereby waives and releases, to the fullest extent permitted by law, any claims that the Company may have against the Underwriters with respect to any conflict of interest that may arise from the fact that the views expressed by their independent research analysts and research departments may be different from or inconsistent with the views or advice communicated to the Company by such Underwriters’ investment banking divisions. The Company acknowledges that each of the Underwriters is a full service securities firm and as such from time to time, subject to applicable securities laws, may effect transactions for its own account or the account of its customers and hold long or short positions in debt or equity securities of the companies that may be the subject of the transactions contemplated by this Agreement.

SECTION 23. General Provisions. This Agreement constitutes the entire agreement of the parties to this Agreement and supersedes all prior written or oral and all contemporaneous oral agreements, understandings and negotiations with respect to the subject matter hereof. This Agreement shall not become effective until the execution of this Agreement by the parties hereto. This Agreement may not be amended or modified unless in writing by all of the parties hereto, and no condition herein (express or implied) may be waived unless waived in writing by each party whom the condition is meant to benefit.

Each of the parties hereto acknowledges that it is a sophisticated business person who was adequately represented by counsel during negotiations regarding the provisions hereof, including, without limitation, the indemnification provisions of Section 6 and the contribution provisions of Section 7, and is fully informed regarding said provisions. Each of the parties hereto further acknowledges that the provisions of Sections 6 and 7 hereto fairly allocate the risks in light of the ability of the parties to investigate the Company, its affairs and its business in order to assure that adequate disclosure has been made in the Registration Statement, the General Disclosure Package and the Prospectus (and any amendments and supplements thereto), as required by the 1933 Act and the 1934 Act.

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If the foregoing is in accordance with your understanding of our agreement, please sign and return to the Company a counterpart hereof, whereupon this instrument, along with all counterparts, will become a binding agreement between the Underwriters and the Company in accordance with its terms.

For themselves and as Representatives of the other Underwriters named in Schedule A hereto.

For themselves and as Representatives of the other Underwriters named in Schedule A hereto.

SCHEDULE A

Sch A

SCHEDULE B

Issuer Free Writing Prospectuses

Sch B

SCHEDULE C

Electronic Road Shows and Other Written Communications

Sch C

SCHEDULE D

$1,000,000,000

$500,000,000 5.450% Senior Notes due 2034 (the “2034 Notes”)

$500,000,000 5.750% Senior Notes due 2054 (the “2054 Notes”)

Sch D - 1

Sch D - 2

The issuer has filed a registration statement (including a prospectus and a preliminary prospectus supplement) with the Securities and Exchange Commission for the offering to which this communication relates. Before you invest, you should read the prospectus and the preliminary prospectus supplement in that registration statement and other documents the issuer has filed with the Securities and Exchange Commission for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the Securities and Exchange Commission’s website at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus and preliminary prospectus supplement if you request it by calling BofA Securities, Inc. at 1-800-294-1322 or J.P. Morgan Securities LLC at 1-212-834-4533.

We expect that delivery of the Notes will be made against payment therefor on or about the closing date specified in this communication, which will be the third business day following the Trade Date (this settlement cycle being referred to as “T+3”). Under Rule 15c6-1 of the Securities Exchange Act of 1934, as amended, trades in the secondary market generally are required to settle in two business days, unless the parties to any such trade expressly agree otherwise. Accordingly, investors who wish to trade the Notes on the Trade Date, by virtue of the fact that the Notes initially will settle T+3, should specify an alternative settlement arrangements at the time of any such trade to prevent a failed settlement. Purchasers of Notes who wish to trade the Notes on the Trade Date should consult their own advisors.

ANY DISCLAIMERS OR OTHER NOTICES THAT MAY APPEAR BELOW ARE NOT APPLICABLE TO THIS COMMUNICATION AND SHOULD BE DISREGARDED. SUCH DISCLAIMERS OR OTHER NOTICES WERE AUTOMATICALLY GENERATED AS A RESULT OF THIS COMMUNICATION BEING SENT VIA BLOOMBERG OR ANOTHER E-MAIL SYSTEM.

Sch D - 3

Exhibit 4.1

ARTHUR J. GALLAGHER & CO.

Officers’ Certificate pursuant to Sections 1.02, 2.01, 3.01 and 3.03 of the Indenture

Pursuant to Sections 1.02, 2.01, 3.01 and 3.03 of the Indenture dated as of May 20, 2021 (the “Indenture”) between Arthur J. Gallagher & Co., a Delaware corporation (the “Company”), and The Bank of New York Mellon Trust Company, N.A. (the “Trustee”), and resolutions duly adopted by the Board of Directors of the Company, or a duly authorized committee thereof, at meetings duly called and held on March 8, 2021, October 26, 2021 and February 10, 2024 (the “Resolutions”), the undersigned, Douglas K. Howell, in his capacity as Vice President and Chief Financial Officer of the Company, and Seth Diehl, in his capacity as Assistant Secretary of the Company, DO HEREBY CERTIFY that:

1. The Company shall create and issue:

(a) $500,000,000 aggregate principal amount of its 5.450% Notes due 2034 (the “Notes due 2034”) with the terms set forth in the form of Note attached hereto as Schedule A and the Indenture; and

(b) $500,000,000 aggregate principal amount of its 5.750% Notes due 2054 (the “Notes due 2054” and, together with the Notes due 2034, the “Notes”) with the terms set forth in the form of Note attached hereto as Schedule B and the Indenture.

2. Each series of Notes shall be issued in the form of one or more Global Notes which shall represent, and shall be denominated in an aggregate amount equal to the aggregate principal amount of, such series of Notes and shall be registered in the name of The Depository Trust Company or its nominee.

3. The Notes and the Trustee’s Certificate of Authentication to be endorsed thereon are to be substantially in the form set forth in the form of Note attached hereto.

4. The corporate trust office of the Trustee in The City of Chicago, State of Illinois is hereby designated and created as the agency of the Company in The City of Chicago, State of Illinois at which both the principal and the interest on the Notes are payable.

5. We have read the applicable provisions of the Indenture, including all covenants and conditions relating to the authentication of Securities and the definitions relating thereto. We have also made such examination or investigation of such corporate records and other documents as we have deemed necessary to enable us to express informed opinions as to whether all such covenants and conditions have been complied with.

6. In each of our opinion, all conditions provided for in the Indenture for the authentication of the Notes have been complied with.

Capitalized terms used herein that are not otherwise defined shall have the meanings ascribed thereto in the Indenture or the Notes, as the case may be.

[Signature page follows]

IN WITNESS WHEREOF, the undersigned have hereunto set their hands this 15th day of February, 2024.

[Signature Page to Officers’ Certificate Pursuant to the Indenture]

SCHEDULE A

Form of Note due 2034

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC” OR THE “DEPOSITARY”), NEW YORK, NEW YORK, TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

THIS SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY, UNLESS AND UNTIL THIS SECURITY IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN DEFINITIVE FORM.

CUSIP No: 04316J AH2

ISIN No: US04316JAH23

Arthur J. Gallagher & Co.

5.450% Notes due 2034

Arthur J. Gallagher & Co., a corporation duly organized and existing under the laws of the State of Delaware (the “Company”), for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of [    ] ($[  ]) on July 15, 2034, and to pay interest on said principal sum from February 15, 2024, or from the most recent interest payment date to which interest has been paid or duly provided for, semi-annually in arrears on January 15 and July 15 in each year, commencing July 15, 2024, at the rate of 5.450% per annum until the principal hereof shall have become due and payable, and on any overdue principal and (to the extent that payment of such interest is enforceable under applicable law) on any overdue installment of interest at the same rate per annum. The interest installment so payable, and punctually paid or duly provided for, on any interest payment date will, as provided in the Indenture hereinafter referred to, be paid to the person in whose name this Security (or one or more Predecessor Securities, as defined in said Indenture) is registered at the close of business on the regular record date for such interest installment, which shall be the January 1 or July 1, as the case may be (whether or not a Business Day), next preceding such interest payment date. Any such interest installment not so punctually paid or duly provided for shall forthwith cease to be payable to the registered holder on such regular record date, and may be paid to the person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on a special record date to be fixed by the Trustee for the payment of such defaulted interest, notice whereof shall be given to the registered holders of this series of Securities as provided in the Indenture, or may be paid at any time in any other lawful manner, all as more fully provided in the Indenture. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months. If interest or principal is payable on a day that is not a Business Day, such payment shall be made on the next succeeding Business Day, as if made on the date such payment was due, and no interest shall accrue on such payment for the period from and after such due date to the date of such payment on the next succeeding Business Day. The principal of and the interest on this Security shall be payable at the office or agency of the Company maintained for that purpose in the City of Chicago, State of Illinois, in any coin or currency of the United States of America which at the time of payment is legal tender for payment of public and private debts; provided, however, that payment of interest may be made at the option of the Company by check mailed to the registered holder at such address as shall appear in the Security Register. This Security shall not be entitled to any benefit under the Indenture, or be valid or become obligatory for any purpose, until the certificate of authentication hereon shall have been signed by or on behalf of the Trustee.

As used herein, “Business Day” means each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in the Borough of Manhattan, New York City are authorized or obligated by law or executive order to close.

The provisions of this Security are continued on the reverse side hereof, and such continued provisions shall for all purposes have the same effect as though fully set forth at this place.

[Signature Page Global Note due 2034]

IN WITNESS WHEREOF, the Company has caused this instrument to be executed.

Dated: February 15, 2024

[Signature Page Global Note due 2034]

CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated therein issued under the within-mentioned Indenture.

Dated: February 15, 2024

[Signature Page Global Note due 2034]

(FORM OF REVERSE OF SECURITY)

This Security is one of a duly authorized series of Securities of the Company, all issued or to be issued in one or more series under and pursuant to an Indenture dated as of May 20, 2021, duly executed and delivered by the Company and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), as amended and supplemented (the “Indenture”), to which Indenture reference is hereby made for a description of the rights, limitation of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the holders of the Securities. By the terms of the Indenture, the Securities are issuable in series which may vary as to amount, date of maturity, rate of interest and in other respects as in the Indenture provided. This Security is one of the series designated on the face hereof (the “Securities”) unlimited in aggregate principal amount.

Beneficial interests in this global Security may be held in minimum denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. This global Security shall be exchangeable for Securities in definitive form registered in the names of persons other than the Depository or its nominee only if the Depository notifies the Company that it is unwilling or unable to continue as the Depositary or if at any time such Depositary is no longer registered as a clearing agency or in good standing under the Securities Exchange Act of 1934 (the “Exchange Act”), as amended, or other applicable statute and a successor Depositary is not appointed by the Company within 90 days and the Company executes and delivers to the Trustee an Issuer Order that this global Security shall be so exchangeable. To the extent that this global Security is exchangeable pursuant to the preceding sentence, it shall be exchangeable for Securities registered in such names as the Depositary shall direct. Securities represented by this global Security that may be exchanged for Securities in definitive form under the circumstances described in this paragraph will be exchangeable only for Securities in definitive form issued in minimum denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. Notwithstanding any other provision herein, this global Security may not be transferred except as a whole by the Depositary to a successor or to a nominee of such Depositary or its successor or by a nominee of such Depositary to such Depositary or its successor or to another nominee of such Depositary or its successor.

In case an Event of Default with respect to the Securities shall have occurred and be continuing, the principal of all of the Securities may be declared, and upon such declaration shall become, due and payable, in the manner, with the effect and subject to the conditions provided in the Indenture.

The provisions of Sections 4.03 and 4.04 of the Indenture are to apply to the Securities.

The Indenture contains provisions permitting the Company and the Trustee, with the consent of the holders of not less than a majority in principal amount of the Outstanding Securities of each series affected by such supplemental indenture, to enter into a supplemental indenture or indentures for the purpose of adding any provision to or changing in any manner or eliminating any of the provisions of the Indenture or of modifying in any manner the rights of the holders of Securities of such series under the Indenture; provided, however, that no such supplemental indenture shall, without the consent of the holder of each Outstanding Security affected thereby, (1) change the stated maturity of the principal of, or any installment of principal of or interest on, any Security, or reduce the principal amount thereof or the rate of interest thereon or any premium payable thereon, or reduce the amount of the principal of the Security that would be due and payable upon a declaration of acceleration of the maturity thereof, or adversely affect any right of repayment at the option of the Holder of any Security, or reduce the amount of, or postpone the date fixed for, the payment of any sinking fund or analogous obligation, or impair the right to commence suit for the enforcement of any such payment on or after the stated maturity thereof (or, in the case of redemption, on or after the Redemption Date), in each case other than the amendment or waiver in accordance with the terms of the Indenture of any covenant or related definition included pursuant to Section 3.01 of the Indenture that provides for an offer to repurchase any Securities of a series upon a sale of assets or change of control transaction, or (2) reduce the percentage in principal amount of the Outstanding Securities of any series, the consent of whose holders is required for any such supplemental indenture, or the consent of whose holders is required for any waiver (of compliance with certain provisions of the Indenture or certain defaults hereunder and their consequences) provided for in the Indenture, or (3) modify the percentage of Securities required to consent to any such supplemental indenture, except to increase any such percentage or to provide that certain other provisions of the Indenture cannot be modified or waived without the consent of the holder of each Outstanding Security affected thereby.

The Indenture also contains provisions permitting the holders of not less than a majority in principal amount of Outstanding Securities of any series to waive, on behalf of the holders of all the Securities of such series, any past default under the Indenture with respect to such series and its consequences, except a default (1) in the payment of the principal of (or premium, if any) or interest on any Security of such series, or (2) in respect of a covenant or provision

of the Indenture which cannot be modified or amended without the consent of the holder of each Outstanding Security of such series affected. Upon any such waiver, such default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured, for every purpose under the Indenture.

No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and interest on this Security at the times and place and at the rate and in the money herein prescribed.

The Securities are issuable as registered Securities without coupons.

The Securities shall be in minimum denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. Securities may be exchanged, upon presentation thereof for that purpose, at the office or agency of the Company in the City of Chicago, State of Illinois, for other Securities of authorized denominations, and for a like aggregate principal amount and series, and upon payment of a sum sufficient to cover any tax or other governmental charge in relation thereto.

The Securities may be redeemed, in whole at any time or in part from time to time, at the option of the Company, (a) at any time prior to April 15, 2034, at a redemption price equal to the greater of (i) 100% of the principal amount of the Securities to be redeemed, and (ii) the sum of the present value of (x) a payment on April 15, 2034 of the principal amount of the Securities to be redeemed and (y) the payment of the remaining scheduled payments through April 15, 2034 of interest on the Securities to be redeemed (exclusive of interest accrued to the date of redemption), discounted to the redemption date, on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months), at a rate equal to the applicable Treasury Rate plus 20 basis points, and (b) at any time on or after April 15, 2034, at a redemption price equal to 100% of the principal amount of the Securities to be redeemed, plus, in either case, accrued and unpaid interest, if any, thereon to, but excluding, the redemption date.

“Treasury Rate” means, with respect to any redemption date for the Securities, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate applicable to such redemption shall be determined by the Company after 4:15 p.m., New York Citytime (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the redemption date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as “Selected Interest Rates (Daily)—H.15” (or any successor designation or publication) (“H.15”) under the caption “U.S. government securities—Treasury constant maturities—Nominal” (or any successor caption or heading) (“H.15 TCM”). In determining the applicable Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to April 15, 2034 (the “Remaining Life”); or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields—one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life—and shall interpolate to April 15, 2034 on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the redemption date.

If on the third business day preceding the redemption date H.15 TCM is no longer published, the Company shall calculate the Treasury Rate applicable to such redemption based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the second business day preceding such redemption date of the United States Treasury security maturing on, or with a maturity that is closest to, April 15, 2034. If there is no United States Treasury security maturing on April 15, 2034 but there are two or more United States Treasury securities with a maturity date equally distant from April 15, 2034, one with a maturity date preceding such date and one with a maturity date following such date, the Company shall select the United States Treasury security with a maturity date preceding April 15, 2034. If there are two or more United States Treasury securities maturing on April 15, 2034 or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at

[Signature Page Global Note due 2054]

11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices, expressed as a percentage of principal amount, at 11:00 a.m., New York City time, of such United States Treasury security, and rounded to three decimal places.

The Company will send or electronically deliver a notice of redemption to each holder of Securities to be redeemed in connection with any redemption in accordance with the notice delivery procedures of DTC at least 10 and not more than 60 days prior to the date fixed for redemption. Any notice to holders of Securities to be redeemed pursuant to such a redemption shall include the appropriate calculation of the redemption price, but need not include the redemption price itself. The actual redemption price, calculated as described above, must be set forth in an Officers’ Certificate delivered to the Trustee no later than two business days prior to the redemption date. The Trustee shall have no responsibility for the calculation or determination of the redemption price. Unless the Company defaults on payment of the redemption price, interest will cease to accrue on the Securities to be redeemed or portions thereof called for redemption. If fewer than all of the Securities are to be redeemed, such Securities shall be selected by lot, or for so long as the Securities are held by DTC (or another depositary), in accordance with the applicable procedures of DTC (or other such depositary). Neither the Trustee nor any registrar shall be liable for any such selection.

Notice of any redemption of Securities in connection with a transaction or an event may, at the Company’s discretion, be given prior to the completion or the occurrence thereof. Any redemption or notice may, at the Company’s discretion, be subject to one or more conditions precedent, including, but not limited to, completion or occurrence of a related transaction or event. At the Company’s discretion, the redemption date may be delayed until such time as any or all such conditions shall be satisfied, or such redemption may not occur and such notice may be rescinded in the event that any or all such conditions shall not have been satisfied by the redemption date, or by the redemption date as so delayed. The Company will provide written notice to the Trustee as soon as practicable but in any event no later than two days prior to the redemption date if any such redemption has been rescinded or delayed, and upon receipt and at the request of the Company, the Trustee will provide such notice to each holder of the Securities to be redeemed in the same manner in which the notice of redemption was given.

If a Change of Control Triggering Event occurs, unless the Company has exercised its right to redeem the Securities as described above, the Company will make an offer to each holder of the Securities to repurchase all of that holder’s Securities at a repurchase price in cash equal to 101% of the aggregate principal amount of Securities repurchased (such principal amount to be equal to $2,000 or an integral multiple of $1,000 in excess thereof), plus any accrued and unpaid interest on the Securities repurchased to, but excluding, the date of repurchase. Within 30 days following any Change of Control Triggering Event or, at the Company’s option, prior to any Change of Control, but after the public announcement of the Change of Control, the Company will send a notice to each holder and the Trustee describing the transaction or transactions that constitute or may constitute the Change of Control Triggering Event and offering to repurchase the Securities on the payment date specified in the notice, which date will be no earlier than 30 days and no later than 45 days from the date such notice is sent. The notice shall, if sent prior to the date of consummation of the Change of Control, state that the offer to repurchase is conditioned on the Change of Control Triggering Event occurring on or prior to the payment date specified in the notice.

The Company will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations to the extent those laws and regulations are applicable in connection with the repurchase of the Securities as a result of a Change of Control Triggering Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Triggering Event provisions of the Securities, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control Triggering Event provisions of the Securities by virtue of such conflict.

On the Change of Control Triggering Event payment date, the Company will, to the extent lawful (1) accept for payment all Securities or portions of Securities properly tendered pursuant to the Company’s offer; (2) deposit with the Paying Agent an amount equal to the aggregate purchase price in respect of all Securities or portions of Securities properly tendered; and (3) deliver or cause to be delivered to the Trustee, the Securities properly accepted, together with an officers’ certificate stating the aggregate principal amount of Securities being purchased by the Company.

The Paying Agent will promptly pay, from funds deposited by the Company for such purpose, to each holder of the Securities properly tendered the purchase price for the Securities, and the Trustee will promptly authenticate and send (or cause to be transferred by book-entry) to each holder a new note equal in principal amount to any unpurchased portion of any Securities surrendered.

[Signature Page Global Note due 2054]

The Company will not be required to make an offer to repurchase the Securities upon a Change of Control Triggering Event if a third party makes an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by the Company and such third party purchases all Securities properly tendered and not withdrawn under its offer.

In addition to the covenants set forth in Article 10 of the Indenture, the Company shall not, and shall not permit any of its subsidiaries to, directly or indirectly, incur or suffer to exist, any Lien, other than a Permitted Lien, securing Debt upon any Capital Stock of any Significant Subsidiary of the Company that is owned, directly or indirectly, by the Company or any of its subsidiaries, in each case whether owned at the date of the original issuance of the Securities or thereafter acquired, unless it has made or will make effective provision whereby the Securities will be secured by such Lien equally and ratably with (or prior to) all other Debt of the Company or any subsidiary secured by such Lien. Any Lien created for the benefit of the holders of the Securities pursuant to the preceding sentence shall provide by its terms that such Lien will be automatically and unconditionally released and discharged upon release and discharge of the Lien.

“Capital Stock” means, with respect to any person, any shares or other equivalents (however designated) of any class of corporate stock or partnership interests or any other participations, rights, warrants, options or other interests in the nature of an equity interest in such person, including, without limitation, preferred stock and any debt security convertible or exchangeable into such equity interest.

“Change of Control” means the occurrence of any of the following: (1) the direct or indirect sale, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or a series of related transactions, of all or substantially all of the Company’s properties or assets and those of its subsidiaries, taken as a whole, to any “person” or “group” (as those terms are used in Section 13(d) and 14(d) of the Exchange Act), other than the Company or one or more of its wholly-owned subsidiaries; (2) the consummation of any transaction (including without limitation, any merger or consolidation) the result of which is that any person (including any “person” (as that term is used in Section 13(d)(3) of the Exchange Act)) becomes the “beneficial owner” (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, of Capital Stock representing more than 50% of the aggregate ordinary voting power represented by the issued and outstanding Capital Stock of the Company; or (3) the adoption of a plan relating to the liquidation or dissolution of the Company.

Notwithstanding the foregoing, a transaction will not be deemed to involve a Change of Control if (1) the Company becomes a direct or indirect wholly-owned subsidiary of a holding company and (2)(A) the direct or indirect holders of the voting Capital Stock of such holding company immediately following that transaction are substantially the same as the holders of the voting Capital Stock of the Company immediately prior to that transaction or (B) immediately following that transaction, no person (including any “person” (as that term is used in Section 13(d)(3) of the Exchange Act)) becomes the “beneficial owner” (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, of Capital Stock representing more than 50% of the aggregate ordinary voting power represented by the issued and outstanding Capital Stock of such holding company.

“Change of Control Triggering Event” means the occurrence of both a Change of Control and a Ratings Decline.

“Debt” means (a) the principal of and premium (if any) in respect of any obligation of such person for money borrowed, and any obligation evidenced by the Securities, debentures, bonds or other similar instruments for the payment of which such person is responsible or liable; (b) all obligations of such person as lessee under leases required to be capitalized on the balance sheet of the lessee under generally accepted accounting principles and leases of property or assets made as part of any sale and leaseback transaction entered into by such person; (c) all obligations of such person issued or assumed as the deferred purchase price of property, all conditional sale obligations of such person and all obligations of such person under any title retention agreement (but excluding trade accounts payable arising in the ordinary course of business); (d) all obligations of such person for the reimbursement of any obligor on any letter of credit, banker’s acceptance or similar credit transaction; (e) all obligations of the type referred to in clauses (a) through (d) of other persons and all dividends of other persons for the payment of which, in either case, such person is responsible or liable, directly or indirectly, as obligor, guarantor or otherwise, including by means of any guarantee; (f) all obligations of the type referred to in clauses (a) through (d) of other persons secured by any Lien on any property of such person (whether or not such obligation is assumed by such person); and (g) to the extent not otherwise included in this definition, hedging obligations of such person.

[Signature Page Global Note due 2054]

“Investment Grade” means a rating of Baa3 or better by Moody’s (or its equivalent under any successor rating categories of Moody’s) and BBB- or better by S&P (or its equivalent under any successor rating categories of S&P) (or, in each case, if such Rating Agency ceases to rate the Securities for reasons outside the Company’s control, the equivalent investment grade credit rating from any Rating Agency selected by the Company as a replacement Rating Agency).

“Lien” means, with respect to any property of any person, any mortgage or deed of trust, pledge, hypothecation, assignment, deposit arrangement, security interest, lien, charge, encumbrance, preference, priority or other security agreement or preferential arrangement of any kind or nature whatsoever on or with respect to such property (including any capitalized lease obligation, conditional sale or other title retention agreement having substantially the same economic effect as any of the foregoing or any sale and leaseback transaction).

“Moody’s” means Moody’s Investors Service Inc., a subsidiary of Moody’s Corporation, and its successors.

“Permitted Lien” means (i) Liens on the Capital Stock of a Significant Subsidiary to secure Debt incurred to finance the purchase price of such Capital Stock; (ii) Liens on the Capital Stock of a Significant Subsidiary existing at the time such person becomes a Subsidiary, provided that any such Lien is not incurred in anticipation of such person becoming a Subsidiary; and (iii) extensions, renewals, refinancings or replacements of any Lien referred to in the foregoing clauses (i) and (ii); provided, however, that any Liens permitted by any of the foregoing clauses (i) and (ii) shall not extend to or cover any additional Capital Stock of a Significant Subsidiary, other than the property that previously secured such Lien.

“Rating Agency” means: (1) each of Moody’s and S&P; and (2) if either of Moody’s or S&P ceases to rate the Securities or fails to make a rating of the Securities publicly available for reasons outside the Company’s control, a “nationally recognized statistical rating organization” within the meaning of Rule 15c3-1(c) (2) (vi) (F) under the Exchange Act selected by the Company as a replacement agency for Moody’s or S&P, or both, as the case may be.

“Ratings Decline” means at any time during the period commencing on the earlier of, (i) the occurrence of a Change of Control or (ii) public notice of the occurrence of a Change of Control or the intention by the Company to effect a Change of Control, and ending 60 days thereafter (which period shall be extended so long as the rating of the Securities is under publicly announced consideration for a possible downgrade by any of the Rating Agencies) that (a) the rating of the Securities shall be reduced by both Rating Agencies and (b) the Securities shall be rated below Investment Grade by each of the Rating Agencies.

“S&P” means S&P Global Ratings, and its successors.

As provided in the Indenture and subject to certain limitations therein set forth, this Security is transferable by the registered holder hereof on the Security Register of the Company, upon surrender of this Security for registration of transfer at the office or agency of the Company in the City of Chicago, State of Illinois, accompanied by a written instrument or instruments of transfer in form satisfactory to the Company or the Security Registrar duly executed by the registered holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities of authorized denominations and for the same aggregate principal amount and series will be issued to the designated transferee or transferees. No service charge will be made for any such transfer, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in relation thereto.

Prior to due presentment for registration of transfer of this Security, the Company, the Trustee, any Paying Agent and any Security Registrar for the Securities may deem and treat the registered holder hereof as the absolute owner hereof (whether or not this Security shall be overdue and notwithstanding any notice of ownership or writing hereon made by anyone other than the Security Registrar for the Securities) for the purpose of receiving payment of or on account of the principal hereof and (subject to Section 3.10 of the Indenture) interest due hereon and for all other purposes, and neither the Company nor the Trustee nor any Paying Agent nor any Security Registrar for the Securities shall be affected by any notice to the contrary.

No recourse shall be had for the payment of the principal of, or the interest on, this Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture, against any incorporator, stockholder, shareholder, officer or director, as such, past, present or future, of the Company or of any successor Person, either directly or through the Company, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being hereby expressly waived and released as a condition of, and as a consideration for, the issuance hereof.

[Signature Page Global Note due 2054]

The Depositary by acceptance of this global Security agrees that it will not sell, assign, transfer or otherwise convey any beneficial interest in this global Security unless such beneficial interest is in an amount equal to an authorized denomination for Securities of this series.

Capitalized terms used herein and not otherwise defined herein shall have the respective meanings set forth in the Indenture.

[Signature Page Global Note due 2054]

SCHEDULE B

Form of Note due 2054

[Signature Page Global Note due 2054]

UNLESS THIS CERTIFICATE IS PRESENTED BY AN AUTHORIZED REPRESENTATIVE OF THE DEPOSITORY TRUST COMPANY, A NEW YORK CORPORATION (“DTC” OR THE “DEPOSITARY”), NEW YORK, NEW YORK, TO THE COMPANY OR ITS AGENT FOR REGISTRATION OF TRANSFER, EXCHANGE OR PAYMENT, AND ANY CERTIFICATE ISSUED IS REGISTERED IN THE NAME OF CEDE & CO. OR IN SUCH OTHER NAME AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC (AND ANY PAYMENT IS MADE TO CEDE & CO. OR TO SUCH OTHER ENTITY AS IS REQUESTED BY AN AUTHORIZED REPRESENTATIVE OF DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL INASMUCH AS THE REGISTERED OWNER HEREOF, CEDE & CO., HAS AN INTEREST HEREIN.

THIS SECURITY MAY NOT BE TRANSFERRED EXCEPT AS A WHOLE BY THE DEPOSITARY TO A NOMINEE OF THE DEPOSITARY OR BY A NOMINEE OF THE DEPOSITARY TO THE DEPOSITARY OR ANOTHER NOMINEE OF THE DEPOSITARY OR BY THE DEPOSITARY OR ANY SUCH NOMINEE TO A SUCCESSOR DEPOSITARY OR A NOMINEE OF SUCH SUCCESSOR DEPOSITARY, UNLESS AND UNTIL THIS SECURITY IS EXCHANGED IN WHOLE OR IN PART FOR SECURITIES IN DEFINITIVE FORM.

CUSIP No: 04316J AJ8

ISIN No: US04316JAJ88

Arthur J. Gallagher & Co.

5.750% Notes due 2054

Arthur J. Gallagher & Co., a corporation duly organized and existing under the laws of the State of Delaware (the “Company”), for value received, hereby promises to pay to Cede & Co., or registered assigns, the principal sum of [    ] ($[  ]) on July 15, 2054, and to pay interest on said principal sum from February 15, 2024, or from the most recent interest payment date to which interest has been paid or duly provided for, semi-annually in arrears on January 15 and July 15 in each year, commencing July 15, 2024, at the rate of 5.750% per annum until the principal hereof shall have become due and payable, and on any overdue principal and (to the extent that payment of such interest is enforceable under applicable law) on any overdue installment of interest at the same rate per annum. The interest installment so payable, and punctually paid or duly provided for, on any interest payment date will, as provided in the Indenture hereinafter referred to, be paid to the person in whose name this Security (or one or more Predecessor Securities, as defined in said Indenture) is registered at the close of business on the regular record date for such interest installment, which shall be the January 1 or July 1, as the case may be (whether or not a Business Day), next preceding such interest payment date. Any such interest installment not so punctually paid or duly provided for shall forthwith cease to be payable to the registered holder on such regular record date, and may be paid to the person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on a special record date to be fixed by the Trustee for the payment of such defaulted interest, notice whereof shall be given to the registered holders of this series of Securities as provided in the Indenture, or may be paid at any time in any other lawful manner, all as more fully provided in the Indenture. Interest will be computed on the basis of a 360-day year comprised of twelve 30-day months. If interest or principal is payable on a day that is not a Business Day, such payment shall be made on the next succeeding Business Day, as if made on the date such payment was due, and no interest shall accrue on such payment for the period from and after such due date to the date of such payment on the next succeeding Business Day. The principal of and the interest on this Security shall be payable at the office or agency of the Company maintained for that purpose in the City of Chicago, State of Illinois, in any coin or currency of the United States of America which at the time of payment is legal tender for payment of public and private debts; provided, however, that payment of interest may be made at the option of the Company by check mailed to the registered holder at such address as shall appear in the Security Register. This Security shall not be entitled to any benefit under the Indenture, or be valid or become obligatory for any purpose, until the certificate of authentication hereon shall have been signed by or on behalf of the Trustee.

As used herein, “Business Day” means each Monday, Tuesday, Wednesday, Thursday and Friday which is not a day on which banking institutions in the Borough of Manhattan, New York City are authorized or obligated by law or executive order to close.

The provisions of this Security are continued on the reverse side hereof, and such continued provisions shall for all purposes have the same effect as though fully set forth at this place.

[Signature Page Global Note due 2054]

IN WITNESS WHEREOF, the Company has caused this instrument to be executed.

Dated: February 15, 2024

[Signature Page Global Note due 2054]

CERTIFICATE OF AUTHENTICATION

This is one of the Securities of the series designated therein issued under the within-mentioned Indenture.

Dated: February 15, 2024

[Signature Page Global Note due 2054]

(FORM OF REVERSE OF SECURITY)

This Security is one of a duly authorized series of Securities of the Company, all issued or to be issued in one or more series under and pursuant to an Indenture dated as of May 20, 2021, duly executed and delivered by the Company and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), as amended and supplemented (the “Indenture”), to which Indenture reference is hereby made for a description of the rights, limitation of rights, obligations, duties and immunities thereunder of the Trustee, the Company and the holders of the Securities. By the terms of the Indenture, the Securities are issuable in series which may vary as to amount, date of maturity, rate of interest and in other respects as in the Indenture provided. This Security is one of the series designated on the face hereof (the “Securities”) unlimited in aggregate principal amount.

Beneficial interests in this global Security may be held in minimum denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. This global Security shall be exchangeable for Securities in definitive form registered in the names of persons other than the Depository or its nominee only if the Depository notifies the Company that it is unwilling or unable to continue as the Depositary or if at any time such Depositary is no longer registered as a clearing agency or in good standing under the Securities Exchange Act of 1934 (the “Exchange Act”), as amended, or other applicable statute and a successor Depositary is not appointed by the Company within 90 days and the Company executes and delivers to the Trustee an Issuer Order that this global Security shall be so exchangeable. To the extent that this global Security is exchangeable pursuant to the preceding sentence, it shall be exchangeable for Securities registered in such names as the Depositary shall direct. Securities represented by this global Security that may be exchanged for Securities in definitive form under the circumstances described in this paragraph will be exchangeable only for Securities in definitive form issued in minimum denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. Notwithstanding any other provision herein, this global Security may not be transferred except as a whole by the Depositary to a successor or to a nominee of such Depositary or its successor or by a nominee of such Depositary to such Depositary or its successor or to another nominee of such Depositary or its successor.

In case an Event of Default with respect to the Securities shall have occurred and be continuing, the principal of all of the Securities may be declared, and upon such declaration shall become, due and payable, in the manner, with the effect and subject to the conditions provided in the Indenture.

The provisions of Sections 4.03 and 4.04 of the Indenture are to apply to the Securities.

The Indenture contains provisions permitting the Company and the Trustee, with the consent of the holders of not less than a majority in principal amount of the Outstanding Securities of each series affected by such supplemental indenture, to enter into a supplemental indenture or indentures for the purpose of adding any provision to or changing in any manner or eliminating any of the provisions of the Indenture or of modifying in any manner the rights of the holders of Securities of such series under the Indenture; provided, however, that no such supplemental indenture shall, without the consent of the holder of each Outstanding Security affected thereby, (1) change the stated maturity of the principal of, or any installment of principal of or interest on, any Security, or reduce the principal amount thereof or the rate of interest thereon or any premium payable thereon, or reduce the amount of the principal of the Security that would be due and payable upon a declaration of acceleration of the maturity thereof, or adversely affect any right of repayment at the option of the Holder of any Security, or reduce the amount of, or postpone the date fixed for, the payment of any sinking fund or analogous obligation, or impair the right to commence suit for the enforcement of any such payment on or after the stated maturity thereof (or, in the case of redemption, on or after the Redemption Date), in each case other than the amendment or waiver in accordance with the terms of the Indenture of any covenant or related definition included pursuant to Section 3.01 of the Indenture that provides for an offer to repurchase any Securities of a series upon a sale of assets or change of control transaction, or (2) reduce the percentage in principal amount of the Outstanding Securities of any series, the consent of whose holders is required for any such supplemental indenture, or the consent of whose holders is required for any waiver (of compliance with certain provisions of the Indenture or certain defaults hereunder and their consequences) provided for in the Indenture, or (3) modify the percentage of Securities required to consent to any such supplemental indenture, except to increase any such percentage or to provide that certain other provisions of the Indenture cannot be modified or waived without the consent of the holder of each Outstanding Security affected thereby.

The Indenture also contains provisions permitting the holders of not less than a majority in principal amount of Outstanding Securities of any series to waive, on behalf of the holders of all the Securities of such series, any past default under the Indenture with respect to such series and its consequences, except a default (1) in the payment of the principal of (or premium, if any) or interest on any Security of such series, or (2) in respect of a covenant or provision of the Indenture which cannot be modified or amended without the consent of the holder of each Outstanding Security of such series affected. Upon any such waiver, such default shall cease to exist, and any Event of Default arising therefrom shall be deemed to have been cured, for every purpose under the Indenture.

No reference herein to the Indenture and no provision of this Security or of the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of and interest on this Security at the times and place and at the rate and in the money herein prescribed.

The Securities are issuable as registered Securities without coupons.

The Securities shall be in minimum denominations of $2,000 and integral multiples of $1,000 in excess of $2,000. Securities may be exchanged, upon presentation thereof for that purpose, at the office or agency of the Company in the City of Chicago, State of Illinois, for other Securities of authorized denominations, and for a like aggregate principal amount and series, and upon payment of a sum sufficient to cover any tax or other governmental charge in relation thereto.

The Securities may be redeemed, in whole at any time or in part from time to time, at the option of the Company, (a) at any time prior to January 15, 2054, at a redemption price equal to the greater of (i) 100% of the principal amount of the Securities to be redeemed, and (ii) the sum of the present value of (x) a payment on January 15, 2054 of the principal amount of the Securities to be redeemed and (y) the payment of the remaining scheduled payments through January 15, 2054 of interest on the Securities to be redeemed (exclusive of interest accrued to the date of redemption), discounted to the redemption date, on a semiannual basis (assuming a 360-day year consisting of twelve 30-day months), at a rate equal to the applicable Treasury Rate plus 25 basis points, and (b) at any time on or after January 15, 2054, at a redemption price equal to 100% of the principal amount of the Securities to be redeemed, plus, in either case, accrued and unpaid interest, if any, thereon to, but excluding, the redemption date.

“Treasury Rate” means, with respect to any redemption date for the Securities, the yield determined by the Company in accordance with the following two paragraphs.

The Treasury Rate applicable to such redemption shall be determined by the Company after 4:15 p.m., New York Citytime (or after such time as yields on U.S. government securities are posted daily by the Board of Governors of the Federal Reserve System), on the third business day preceding the redemption date based upon the yield or yields for the most recent day that appear after such time on such day in the most recent statistical release published by the Board of Governors of the Federal Reserve System designated as “Selected Interest Rates (Daily)—H.15” (or any successor designation or publication) (“H.15”) under the caption “U.S. government securities—Treasury constant maturities—Nominal” (or any successor caption or heading) (“H.15 TCM”). In determining the applicable Treasury Rate, the Company shall select, as applicable: (1) the yield for the Treasury constant maturity on H.15 exactly equal to the period from the redemption date to January 15, 2054 (the “Remaining Life”); or (2) if there is no such Treasury constant maturity on H.15 exactly equal to the Remaining Life, the two yields—one yield corresponding to the Treasury constant maturity on H.15 immediately shorter than and one yield corresponding to the Treasury constant maturity on H.15 immediately longer than the Remaining Life—and shall interpolate to January 15, 2054 on a straight-line basis (using the actual number of days) using such yields and rounding the result to three decimal places; or (3) if there is no such Treasury constant maturity on H.15 shorter than or longer than the Remaining Life, the yield for the single Treasury constant maturity on H.15 closest to the Remaining Life. For purposes of this paragraph, the applicable Treasury constant maturity or maturities on H.15 shall be deemed to have a maturity date equal to the relevant number of months or years, as applicable, of such Treasury constant maturity from the redemption date.

If on the third business day preceding the redemption date H.15 TCM is no longer published, the Company shall calculate the Treasury Rate applicable to such redemption based on the rate per annum equal to the semi-annual equivalent yield to maturity at 11:00 a.m., New York City time, on the second business day preceding such redemption date of the United States Treasury security maturing on, or with a maturity that is closest to, January 15,

2054. If there is no United States Treasury security maturing on January 15, 2054 but there are two or more United States Treasury securities with a maturity date equally distant from January 15, 2054, one with a maturity date preceding such date and one with a maturity date following such date, the Company shall select the United States Treasury security with a maturity date preceding January 15, 2054. If there are two or more United States Treasury securities maturing on January 15, 2054 or two or more United States Treasury securities meeting the criteria of the preceding sentence, the Company shall select from among these two or more United States Treasury securities the United States Treasury security that is trading closest to par based upon the average of the bid and asked prices for such United States Treasury securities at 11:00 a.m., New York City time. In determining the Treasury Rate in accordance with the terms of this paragraph, the semi-annual yield to maturity of the applicable United States Treasury security shall be based upon the average of the bid and asked prices, expressed as a percentage of principal amount, at 11:00 a.m., New York City time, of such United States Treasury security, and rounded to three decimal places.

The Company will send or electronically deliver a notice of redemption to each holder of Securities to be redeemed in connection with any redemption in accordance with the notice delivery procedures of DTC at least 10 and not more than 60 days prior to the date fixed for redemption. Any notice to holders of Securities to be redeemed pursuant to such a redemption shall include the appropriate calculation of the redemption price, but need not include the redemption price itself. The actual redemption price, calculated as described above, must be set forth in an Officers’ Certificate delivered to the Trustee no later than two business days prior to the redemption date. The Trustee shall have no responsibility for the calculation or determination of the redemption price. Unless the Company defaults on payment of the redemption price, interest will cease to accrue on the Securities to be redeemed or portions thereof called for redemption. If fewer than all of the Securities are to be redeemed, such Securities shall be selected by lot or, for so long as the Securities are held by DTC (or another depositary), in accordance with the applicable procedures of DTC (or other such depositary). Neither the Trustee nor any registrar shall be liable for any such selection.

Notice of any redemption of Securities in connection with a transaction or an event may, at the Company’s discretion, be given prior to the completion or the occurrence thereof. Any redemption or notice may, at the Company’s discretion, be subject to one or more conditions precedent, including, but not limited to, completion or occurrence of a related transaction or event. At the Company’s discretion, the redemption date may be delayed until such time as any or all such conditions shall be satisfied, or such redemption may not occur and such notice may be rescinded in the event that any or all such conditions shall not have been satisfied by the redemption date, or by the redemption date as so delayed. The Company will provide written notice to the Trustee as soon as practicable but in any event no later than two days prior to the redemption date if any such redemption has been rescinded or delayed, and upon receipt and at the request of the Company, the Trustee will provide such notice to each holder of the Securities to be redeemed in the same manner in which the notice of redemption was given.

If a Change of Control Triggering Event occurs, unless the Company has exercised its right to redeem the Securities as described above, the Company will make an offer to each holder of the Securities to repurchase all of that holder’s Securities at a repurchase price in cash equal to 101% of the aggregate principal amount of Securities repurchased (such principal amount to be equal to $2,000 or an integral multiple of $1,000 in excess thereof), plus any accrued and unpaid interest on the Securities repurchased to, but excluding, the date of repurchase. Within 30 days following any Change of Control Triggering Event or, at the Company’s option, prior to any Change of Control, but after the public announcement of the Change of Control, the Company will send a notice to each holder and the Trustee describing the transaction or transactions that constitute or may constitute the Change of Control Triggering Event and offering to repurchase the Securities on the payment date specified in the notice, which date will be no earlier than 30 days and no later than 45 days from the date such notice is sent. The notice shall, if sent prior to the date of consummation of the Change of Control, state that the offer to repurchase is conditioned on the Change of Control Triggering Event occurring on or prior to the payment date specified in the notice.

The Company will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations to the extent those laws and regulations are applicable in connection with the repurchase of the Securities as a result of a Change of Control Triggering Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Triggering Event provisions of the Securities, the Company will comply with the applicable securities laws and regulations and will not be deemed to have breached its obligations under the Change of Control Triggering Event provisions of the Securities by virtue of such conflict.

On the Change of Control Triggering Event payment date, the Company will, to the extent lawful (1) accept for payment all Securities or portions of Securities properly tendered pursuant to the Company’s offer; (2) deposit with the Paying Agent an amount equal to the aggregate purchase price in respect of all Securities or portions of Securities properly tendered; and (3) deliver or cause to be delivered to the Trustee, the Securities properly accepted, together with an officers’ certificate stating the aggregate principal amount of Securities being purchased by the Company.

The Paying Agent will promptly pay, from funds deposited by the Company for such purpose, to each holder of the Securities properly tendered the purchase price for the Securities, and the Trustee will promptly authenticate and send (or cause to be transferred by book-entry) to each holder a new note equal in principal amount to any unpurchased portion of any Securities surrendered.

The Company will not be required to make an offer to repurchase the Securities upon a Change of Control Triggering Event if a third party makes an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by the Company and such third party purchases all Securities properly tendered and not withdrawn under its offer.

In addition to the covenants set forth in Article 10 of the Indenture, the Company shall not, and shall not permit any of its subsidiaries to, directly or indirectly, incur or suffer to exist, any Lien, other than a Permitted Lien, securing Debt upon any Capital Stock of any Significant Subsidiary of the Company that is owned, directly or indirectly, by the Company or any of its subsidiaries, in each case whether owned at the date of the original issuance of the Securities or thereafter acquired, unless it has made or will make effective provision whereby the Securities will be secured by such Lien equally and ratably with (or prior to) all other Debt of the Company or any subsidiary secured by such Lien. Any Lien created for the benefit of the holders of the Securities pursuant to the preceding sentence shall provide by its terms that such Lien will be automatically and unconditionally released and discharged upon release and discharge of the Lien.

“Capital Stock” means, with respect to any person, any shares or other equivalents (however designated) of any class of corporate stock or partnership interests or any other participations, rights, warrants, options or other interests in the nature of an equity interest in such person, including, without limitation, preferred stock and any debt security convertible or exchangeable into such equity interest.

“Change of Control” means the occurrence of any of the following: (1) the direct or indirect sale, transfer, conveyance or other disposition (other than by way of merger or consolidation), in one or a series of related transactions, of all or substantially all of the Company’s properties or assets and those of its subsidiaries, taken as a whole, to any “person” or “group” (as those terms are used in Section 13(d) and 14(d) of the Exchange Act), other than the Company or one or more of its wholly-owned subsidiaries; (2) the consummation of any transaction (including without limitation, any merger or consolidation) the result of which is that any person (including any “person” (as that term is used in Section 13(d)(3) of the Exchange Act)) becomes the “beneficial owner” (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, of Capital Stock representing more than 50% of the aggregate ordinary voting power represented by the issued and outstanding Capital Stock of the Company; or (3) the adoption of a plan relating to the liquidation or dissolution of the Company.

Notwithstanding the foregoing, a transaction will not be deemed to involve a Change of Control if (1) the Company becomes a direct or indirect wholly-owned subsidiary of a holding company and (2)(A) the direct or indirect holders of the voting Capital Stock of such holding company immediately following that transaction are substantially the same as the holders of the voting Capital Stock of the Company immediately prior to that transaction or (B) immediately following that transaction, no person (including any “person” (as that term is used in Section 13(d)(3) of the Exchange Act)) becomes the “beneficial owner” (as defined in Rules 13d-3 and 13d-5 under the Exchange Act), directly or indirectly, of Capital Stock representing more than 50% of the aggregate ordinary voting power represented by the issued and outstanding Capital Stock of such holding company.

“Change of Control Triggering Event” means the occurrence of both a Change of Control and a Ratings Decline.

“Debt” means (a) the principal of and premium (if any) in respect of any obligation of such person for money borrowed, and any obligation evidenced by the Securities, debentures, bonds or other similar instruments for the

payment of which such person is responsible or liable; (b) all obligations of such person as lessee under leases required to be capitalized on the balance sheet of the lessee under generally accepted accounting principles and leases of property or assets made as part of any sale and leaseback transaction entered into by such person; (c) all obligations of such person issued or assumed as the deferred purchase price of property, all conditional sale obligations of such person and all obligations of such person under any title retention agreement (but excluding trade accounts payable arising in the ordinary course of business); (d) all obligations of such person for the reimbursement of any obligor on any letter of credit, banker’s acceptance or similar credit transaction; (e) all obligations of the type referred to in clauses (a) through (d) of other persons and all dividends of other persons for the payment of which, in either case, such person is responsible or liable, directly or indirectly, as obligor, guarantor or otherwise, including by means of any guarantee; (f) all obligations of the type referred to in clauses (a) through (d) of other persons secured by any Lien on any property of such person (whether or not such obligation is assumed by such person); and (g) to the extent not otherwise included in this definition, hedging obligations of such person.

“Investment Grade” means a rating of Baa3 or better by Moody’s (or its equivalent under any successor rating categories of Moody’s) and BBB- or better by S&P (or its equivalent under any successor rating categories of S&P) (or, in each case, if such Rating Agency ceases to rate the Securities for reasons outside the Company’s control, the equivalent investment grade credit rating from any Rating Agency selected by the Company as a replacement Rating Agency).

“Lien” means, with respect to any property of any person, any mortgage or deed of trust, pledge, hypothecation, assignment, deposit arrangement, security interest, lien, charge, encumbrance, preference, priority or other security agreement or preferential arrangement of any kind or nature whatsoever on or with respect to such property (including any capitalized lease obligation, conditional sale or other title retention agreement having substantially the same economic effect as any of the foregoing or any sale and leaseback transaction).

“Moody’s” means Moody’s Investors Service Inc., a subsidiary of Moody’s Corporation, and its successors.

“Permitted Lien” means (i) Liens on the Capital Stock of a Significant Subsidiary to secure Debt incurred to finance the purchase price of such Capital Stock; (ii) Liens on the Capital Stock of a Significant Subsidiary existing at the time such person becomes a Subsidiary, provided that any such Lien is not incurred in anticipation of such person becoming a Subsidiary; and (iii) extensions, renewals, refinancings or replacements of any Lien referred to in the foregoing clauses (i) and (ii); provided, however, that any Liens permitted by any of the foregoing clauses (i) and (ii) shall not extend to or cover any additional Capital Stock of a Significant Subsidiary, other than the property that previously secured such Lien.

“Rating Agency” means: (1) each of Moody’s and S&P; and (2) if either of Moody’s or S&P ceases to rate the Securities or fails to make a rating of the Securities publicly available for reasons outside the Company’s control, a “nationally recognized statistical rating organization” within the meaning of Rule 15c3-1(c) (2) (vi) (F) under the Exchange Act selected by the Company as a replacement agency for Moody’s or S&P, or both, as the case may be.

“Ratings Decline” means at any time during the period commencing on the earlier of, (i) the occurrence of a Change of Control or (ii) public notice of the occurrence of a Change of Control or the intention by the Company to effect a Change of Control, and ending 60 days thereafter (which period shall be extended so long as the rating of the Securities is under publicly announced consideration for a possible downgrade by any of the Rating Agencies) that (a) the rating of the Securities shall be reduced by both Rating Agencies and (b) the Securities shall be rated below Investment Grade by each of the Rating Agencies.

“S&P” means S&P Global Ratings, and its successors.

As provided in the Indenture and subject to certain limitations therein set forth, this Security is transferable by the registered holder hereof on the Security Register of the Company, upon surrender of this Security for registration of transfer at the office or agency of the Company in the City of Chicago, State of Illinois, accompanied by a written instrument or instruments of transfer in form satisfactory to the Company or the Security Registrar duly executed by the registered holder hereof or his attorney duly authorized in writing, and thereupon one or more new Securities of authorized denominations and for the same aggregate principal amount and series will be issued to the designated transferee or transferees. No service charge will be made for any such transfer, but the Company may require payment of a sum sufficient to cover any tax or other governmental charge payable in relation thereto.

Prior to due presentment for registration of transfer of this Security, the Company, the Trustee, any Paying Agent and any Security Registrar for the Securities may deem and treat the registered holder hereof as the absolute owner hereof (whether or not this Security shall be overdue and notwithstanding any notice of ownership or writing hereon made by anyone other than the Security Registrar for the Securities) for the purpose of receiving payment of or on account of the principal hereof and (subject to Section 3.10 of the Indenture) interest due hereon and for all other purposes, and neither the Company nor the Trustee nor any Paying Agent nor any Security Registrar for the Securities shall be affected by any notice to the contrary.

No recourse shall be had for the payment of the principal of, or the interest on, this Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture, against any incorporator, stockholder, shareholder, officer or director, as such, past, present or future, of the Company or of any successor Person, either directly or through the Company, whether by virtue of any constitution, statute or rule of law, or by the enforcement of any assessment or penalty or otherwise, all such liability being hereby expressly waived and released as a condition of, and as a consideration for, the issuance hereof.

The Depositary by acceptance of this global Security agrees that it will not sell, assign, transfer or otherwise convey any beneficial interest in this global Security unless such beneficial interest is in an amount equal to an authorized denomination for Securities of this series.

Capitalized terms used herein and not otherwise defined herein shall have the respective meanings set forth in the Indenture.

Exhibit 5.1

February 15, 2024

Arthur J. Gallagher & Co.

2850 Golf Road

Rolling Meadows, Illinois 60008

Registration Statement on Form S-3 (File No. 333-277002)

Ladies and Gentlemen:

We have acted as special counsel to Arthur J. Gallagher & Co., a Delaware corporation (the “Company”) in connection with the preparation and filing with the Securities and Exchange Commission (the “Commission”) of a Registration Statement on Form S-3, file no. 333-277002 (the “Registration Statement”), under the Securities Act of 1933, as amended (the “Securities Act”), the prospectus included therein, the prospectus supplement, dated February 12, 2024, filed with the Commission on February 14, 2024 pursuant to Rule 424(b) of the Securities Act (the “Prospectus Supplement”), and the offering by the Company thereto of $500,000,000 aggregate principal amount of the Company’s 5.450% Senior Notes due 2034 (the “2034 Notes”) and $500,000,000 aggregate principal amount of the Company’s 5.750% Senior Notes due 2054 the “2054 Notes” and, together with the 2034 Notes, the “Notes”).

The Notes have been issued pursuant to the Indenture dated as of May 20, 2021 (the “Base Indenture”), between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), as supplemented and modified in respect of the Notes by the Officers’ Certificate pursuant to the Base Indenture, dated as of February 15, 2024 (the “Officers’ Certificate”) (the Base Indenture, as so supplemented and modified, the “Indenture”).

In arriving at the opinions expressed below, we have examined originals, or copies certified or otherwise identified to our satisfaction as being true and complete copies of the originals, of the Base Indenture, the Officers’ Certificate, and the Notes and such other documents, corporate records, certificates of officers of the Company and of public officials and other instruments as we have deemed necessary or advisable to enable us to render these opinions. In our examination, we have assumed, without independent investigation, the genuineness of all signatures, the legal capacity and competency of all natural persons, the authenticity of all documents submitted to us as originals and the conformity to original documents of all documents submitted to us as copies. As to any facts material to these opinions, we have relied to the extent we deemed appropriate and without independent investigation upon statements and representations of officers and other representatives of the Company and others.

Abu Dhabi • Beijing • Brussels • Century City • Dallas • Denver • Dubai • Frankfurt • Hong Kong • Houston • London • Los Angeles

Munich • New York • Orange County • Palo Alto • Paris • San Francisco • Singapore • Washington, D.C.

February 15, 2024

Page 2

Based upon the foregoing, and subject to the assumptions, exceptions, qualifications and limitations set forth herein, we are of the opinion that the Notes are legal, valid and binding obligations of the Company, enforceable against the Company in accordance with their respective terms.

The opinion expressed above is subject to the following additional exceptions, qualifications, limitations and assumptions:

A. We render no opinion herein as to matters involving the laws of any jurisdiction other than the State of New York. This opinion is limited to the effect of the current state of the laws of the State of New York and the facts as they currently exist. We assume no obligation to revise or supplement this opinion in the event of future changes in such laws or the interpretations thereof or such facts.

B. The opinion above is subject to (i) the effect of any bankruptcy, insolvency, reorganization, moratorium, arrangement or similar laws affecting the rights and remedies of creditors’ generally, including without limitation the effect of statutory or other laws regarding fraudulent transfers or preferential transfers, and (ii) general principles of equity, including without limitation concepts of materiality, reasonableness, good faith and fair dealing and the possible unavailability of specific performance, injunctive relief or other equitable remedies regardless of whether enforceability is considered in a proceeding in equity or at law.

C. We express no opinion regarding the effectiveness of (i) any waiver of stay, extension or usury laws; (ii) provisions relating to indemnification, exculpation or contribution, to the extent such provisions may be held unenforceable as contrary to public policy or federal or state securities laws or due to the negligence or willful misconduct of the indemnified party; (iii) any provision waiving the right to object to venue in any court; (iv) any agreement to submit to the jurisdiction of any Federal court; (v) any waiver of the right to jury trial or (vi) any provision to the effect that every right or remedy is cumulative and may be exercised in addition to any other right or remedy or that the election of some particular remedy does not preclude recourse to one or more others.

We consent to the filing of this opinion as an exhibit to the Registration Statement, and we further consent to the use of our name under the caption “Legal Matters” in the Registration Statement and the Prospectus Supplement. In giving these consents, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the Commission promulgated thereunder.

Very truly yours,

/s/ Gibson, Dunn & Crutcher LLP