Ownership Submission
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 *
Cookson David S
   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, North America
(Last)
(First)
(Middle)
C/O ARMSTRONG WORLD INDUSTRIES INC., 2500 COLUMBIA AVENUE, P.O. BOX 3001		 3. Date of Earliest Transaction (Month/Day/Year)
04/11/2016
(Street)

LANCASTER, PA 17603		 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               17,938 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
Restricted Stock Units (1) (1)               (2)   (2) Common Stock 3,594   3,594 D  
Restricted Stock Units (1) (1)               (3)   (3) Common Stock 1,187   1,187 D  
Stock Options $ 47.17               (4) 02/25/2024 Common Stock 7,706   7,706 D  
Stock Options $ 45.32               (5) 02/20/2023 Common Stock 7,218   7,218 D  
Stock Options $ 37.83               (6) 02/28/2022 Common Stock 12,412   12,412 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Cookson David S
C/O ARMSTRONG WORLD INDUSTRIES INC.
2500 COLUMBIA AVENUE, P.O. BOX 3001
LANCASTER, PA 17603		       SVP, North America  

Signatures

 /s/ Bryan Y.M. Tham, Attorney-in-Fact   04/13/2016
**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) Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock under the Issuer's 2011 Long-Term Incentive Plan.
(2) The restricted stock units were granted to the Reporting Person on February 24, 2015 and will vest as follows: (1) 1,797 on the second anniversary of the grant, and (2) 1,797 on the third anniversary of the grant (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2011 Long-Term Incentive Plan).
(3) The restricted stock units were granted to the Reporting Person on February 25, 2014 and will vest on December 31, 2016 (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2011 Long-Term Incentive Plan).
(4) The stock options were granted on February 25, 2014 and 5,136 have vested; the remaining 2,570 unvested stock options will vest and become exercisable on the third anniversary of the grant (contingent upon the Reporting Person's employment with the Issuer on the scheduled vesting date, except as provided for under the Issuer's 2011 Long-Term Incentive Plan).
(5) The stock options were granted on February 20, 2013 and have vested.
(6) The stock options were granted on February 28, 2012 and have vested.
 
Remarks:
NOTE: All derivative securities on Table II have been adjusted as a result of the spin-off of Armstrong Flooring, Inc., effective on April 1, 2016.

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