FORM 4 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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * ESTEY MONA G   2. Issuer Name and Ticker or Trading Symbol LYDALL INC /DE/ [LDL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) VP - Human Resources (Last) (First) (Middle) C/O LYDALL, INC., ONE COLONIAL ROAD, P.O. BOX 151 3. Date of Earliest Transaction (Month/Day/Year) 02/19/2013 (Street) MANCHESTER, CT 06045-0151 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 02/19/2013   A   900 (1) A $ 0 37,178 D   Common Stock 02/19/2013   F   2,082 (2) D $ 16.07 35,096 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (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)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
ESTEY MONA G C/O LYDALL, INC. ONE COLONIAL ROAD, P.O. BOX 151 MANCHESTER, CT 06045-0151			VP - Human Resources

Signatures

Donna G. Tracy, Attorney-in-fact for Mona G. Estey		02/21/2013
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	Represents an increase from the number of Performance Shares granted under the Company's 2003 Stock Incentive Compensation Plan on December 11, 2009, following the certification, on February 19, 2013, by the Compensation Committee 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 4,500 shares underlying the award previously reported on December 14, 2009 vested in full on February 19, 2013.
(2)	In conjunction with the vesting on February 19, 2013 of 5,400 performance shares from the Performance Share Award granted on December 11, 2009 and certified on February 19, 2013, 2,082 shares of common stock were surrendered to satisfy tax obligations on the reporting person.

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