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
                                                                                  
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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 * Hershey Mark A 2. Issuer Name and Ticker or Trading Symbol ARMSTRONG WORLD INDUSTRIES INC [ AWI ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
SVP Americas
(Last)          (First)          (Middle)
C/O ARMSTRONG WORLD INDUSTRIES, INC., 2500 COLUMBIA AVENUE
3. Date of Earliest Transaction (MM/DD/YYYY)
4/19/2022
(Street)
LANCASTER, PA 17603
(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  4/19/2022    M    2416 (1) A $0  47469  D   
Common Stock  4/19/2022    F    1051 (2) D $92.81  46418  D   
Common Stock  4/21/2022    S(3)    1365  D $95.11  45053  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 Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. 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 Date 7. 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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Performance Based Restricted Stock Units   (4) 4/19/2022    M        2416    (5)  (6) Common Stock  2416  $0  0  D   

Explanation of Responses:
(1)  Reflects the conversion of previously granted performance restricted stock units into shares of Issuer's common stock in connection with the vesting of the units based on underlying performance metrics.
(2)  Represents the number of shares withheld by the Issuer to satisfy the Reporting Person's tax obligations upon the vesting of performance restricted stock units granted to the Reporting Person under the Issuer's 2016 Long-Term Incentive Plan.
(3)  Sale pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on November 19, 2021.
(4)  Each performance restricted stock unit represents a contingent right to receive one share of Issuer's common stock.
(5)  The performance restricted stock units were granted on February 26, 2019, under the 2016 Long-Term Incentive Plan of the Issuer. The performance period for the performance restricted stock units was January 1, 2019 to December 31, 2021, with vesting subject to achievement and certification of pre-established performance conditions. Achievement of the performance conditions was certified by the Management Development and Compensation Committee of the Board of Directors of the Issuer on April 19, 2022.
(6)  Not applicable.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Hershey Mark A
C/O ARMSTRONG WORLD INDUSTRIES, INC.
2500 COLUMBIA AVENUE
LANCASTER, PA 17603


SVP Americas

Signatures
/s/ Bryan Y.M. Tham, Attorney-in-fact 4/21/2022
**Signature of Reporting Person Date

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
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