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 *
Maier Donald R.
   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)
Sr. VP Global Operations
(Last)
(First)
(Middle)
C/O ARMSTRONG WORLD INDUSTRIES, INC., 2500 COLUMBIA AVE		 3. Date of Earliest Transaction (Month/Day/Year)
04/10/2012
(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

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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
Stock Options $ 26.21 04/10/2012   D(1)     10,852 03/02/2011 03/02/2020 Common Stock 10,852 (1) 0 D  
Stock Options $ 22.48 04/10/2012   A(1)   12,654   03/02/2011 03/02/2020 Common Stock 12,654 (1) 12,654 D  
Stock Options $ 26.21 04/10/2012   D(1)     10,852 03/02/2012 03/02/2020 Common Stock 10,852 (1) 0 D  
Stock Options $ 22.48 04/10/2012   A(1)   12,654   03/02/2012 03/02/2020 Common Stock 12,654 (1) 12,654 D  
Stock Options $ 26.21 04/10/2012   D(1)     10,853 03/02/2013 03/02/2020 Common Stock 10,853 (1) 0 D  
Stock Options $ 22.48 04/10/2012   A(1)   12,655   03/02/2013 03/02/2020 Common Stock 12,655 (1) 12,655 D  
Stock Options $ 29.23 04/10/2012   D(1)     6,582 04/01/2011 04/01/2020 Common Stock 6,582 (1) 0 D  
Stock Options $ 25.07 04/10/2012   A(1)   7,675   04/01/2011 04/01/2020 Common Stock 7,675 (1) 7,675 D  
Stock Options $ 29.23 04/10/2012   D(1)     6,582 04/01/2012 04/01/2020 Common Stock 6,582 (1) 0 D  
Stock Options $ 25.07 04/10/2012   A(1)   7,675   04/01/2012 04/01/2020 Common Stock 7,675 (1) 7,675 D  
Stock Options $ 29.23 04/10/2012   D(1)     6,582 12/31/2012 04/01/2020 Common Stock 6,582 (1) 0 D  
Stock Options $ 25.07 04/10/2012   A(1)   7,676   12/31/2012 04/01/2020 Common Stock 7,676 (1) 7,676 D  
Stock Options $ 41.47 04/10/2012   D(1)     6,940 03/02/2012 03/02/2021 Common Stock 6,940 (1) 0 D  
Stock Options $ 35.57 04/10/2012   A(1)   8,093   03/02/2012 03/02/2021 Common Stock 8,093 (1) 8,093 D  
Stock Options $ 41.47 04/10/2012   D(1)     6,941 03/02/2013 03/02/2021 Common Stock 6,941 (1) 0 D  
Stock Options $ 35.57 04/10/2012   A(1)   8,094   03/02/2013 03/02/2021 Common Stock 8,094 (1) 8,094 D  
Stock Options $ 41.47 04/10/2012   D(1)     6,941 03/02/2014 03/02/2021 Common Stock 6,941 (1) 0 D  
Stock Options $ 35.57 04/10/2012   A(1)   8,094   03/02/2014 03/02/2021 Common Stock 8,094 (1) 8,094 D  
Stock Options $ 38.65 04/10/2012   D(1)     5,168 11/01/2012 11/01/2021 Common Stock 5,168 (1) 0 D  
Stock Options $ 33.15 04/10/2012   A(1)   6,026   11/01/2012 11/01/2021 Common Stock 6,026 (1) 6,026 D  
Stock Options $ 38.65 04/10/2012   D(1)     5,168 11/01/2013 11/01/2021 Common Stock 5,168 (1) 0 D  
Stock Options $ 33.15 04/10/2012   A(1)   6,026   11/01/2013 11/01/2021 Common Stock 6,026 (1) 6,026 D  
Stock Options $ 38.65 04/10/2012   D(1)     5,168 11/01/2014 11/01/2021 Common Stock 5,168 (1) 0 D  
Stock Options $ 33.15 04/10/2012   A(1)   6,026   11/01/2014 11/01/2021 Common Stock 6,026 (1) 6,026 D  
Stock Options $ 50.38 04/10/2012   D(1)     9,685 02/28/2013 02/28/2022 Common Stock 9,685 (1) 0 D  
Stock Options $ 43.21 04/10/2012   A(1)   11,294   02/28/2013 02/28/2022 Common Stock 11,294 (1) 11,294 D  
Stock Options $ 50.38 04/10/2012   D(1)     9,685 02/28/2014 02/28/2022 Common Stock 9,685 (1) 0 D  
Stock Options $ 43.21 04/10/2012   A(1)   11,294   02/28/2014 02/28/2022 Common Stock 11,294 (1) 11,294 D  
Stock Options $ 50.38 04/10/2012   D(1)     9,686 02/28/2015 02/28/2022 Common Stock 9,686 (1) 0 D  
Stock Options $ 43.21 04/10/2012   A(1)   11,294   02/28/2015 02/28/2022 Common Stock 11,294 (1) 11,294 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Maier Donald R.
C/O ARMSTRONG WORLD INDUSTRIES, INC.
2500 COLUMBIA AVE
LANCASTER, PA 17603		       Sr. VP Global Operations  

Signatures

 /s/Christopher S. Parisi, Attorney-in-fact   04/12/2012
**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) The reported transactions relate to an adjustment of outstanding stock options and exercise prices in connection with the Registrant's payment of a special cash dividend to shareholders on April 10, 2012, resulting in the deemed cancellation of the original options and the grant of replacement options. An adjustment is required under the terms of the underlying equity incentive plan.

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