FORM 4 [X] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Greenstein Sara A.		 2. Issuer Name and Ticker or Trading Symbol

LYDALL INC /DE/ [ LDL ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__X__ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
President and CEO
(Last)          (First)          (Middle)

C/O LYDALL, INC., ONE COLONIAL ROAD		 3. Date of Earliest Transaction (MM/DD/YYYY)

10/1/2021
(Street)

MANCHESTER, CT 06042
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
 6. Individual or Joint/Group Filing (Check Applicable Line)

_X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 10/1/2021  A  53500 (2)A$0 219977 (3)D  
Common Stock 10/1/2021  D(1)  219977 D (4)0 D  

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)		2. Conversion or Exercise Price of Derivative Security3. Trans. Date3A. Deemed Execution Date, if any4. Trans. Code
(Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4)		8. Price of Derivative Security
(Instr. 5)		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Non-Qualified Stock Option (Right to Buy) $18.62 10/1/2021  D     110620   (5) (5)Common Stock 110620  (5)0 D  
Explanation of Responses:
(1) Disposed of as a result of the merger pursuant to the previously announced Agreement and Plan of Merger, dated as of June 21, 2021, by and among Lydall, Inc., Unifrax Holding Co., Outback Merger Sub, Inc. and Unifrax I LLC, as it may be amended from time to time, referred to as the Merger Agreement.
(2) Represents an increase from the number of Performance Shares granted under the Company's Amended and Restated 2012 Stock Incentive Plan on each of November 20, 2019 and February 22, 2021 following the certification, on October 1, 2021, by the Board of Directors of the attainment of the performance criteria set forth in the award in excess of target. The shares covered by this report, as well as the original 51,020 and 27,990 shares underlying the awards previously reported on the above dates vested in full on October 1, 2021 and were converted in the Merger into the right to receive $62.10 in cash per share underlying the Performance Shares (the "Merger Consideration").
(3) Previously reported Restricted Stock and Performance Share awards were included in previously reported amount of securities beneficially owned.
(4) Each share of common stock was cancelled pursuant to the Merger Agreement in exchange for the right to receive the Merger Consideration.
(5) Effective as of immediately prior to the effective time of the Merger, each then-outstanding and unexercised stock option of the issuer with an exercise price less than $62.10 was automatically canceled and converted into the right to receive an amount of cash equal to the product of (i) the total number of shares of Common Stock then underlying such stock option multiplied by (ii) the excess of the $62.10 over the exercise price per share of such stock option, on the terms set forth in the Merger Agreement.
Reporting Owners
Reporting Owner Name / Address
Relationships
Director10% OwnerOfficerOther
Greenstein Sara A.
C/O LYDALL, INC.
ONE COLONIAL ROAD
MANCHESTER, CT 06042		X
President and CEO
Signatures
Chad A. McDaniel attorney-in-fact for Sara A. Greenstein10/5/2021
**Signature of Reporting PersonDate
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