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 *
Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust
   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 __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
818 N. WASHINGTON ST.		 3. Date of Earliest Transaction (Month/Day/Year)
08/10/2009
(Street)

WILMINGTON, DE 19801		 4. If Amendment, Date Original Filed(Month/Day/Year)
08/11/2009		 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 08/10/2009   S   7,000,000 (1) D $ 22.31 29,981,480 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
Forward Sale Contract (obligation to sell) (1) (2) (3) (2) 08/10/2009   J(2)   1,039,777     (2)   (2) Common Stock 1,039,777 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust
818 N. WASHINGTON ST.
WILMINGTON, DE 19801		     X    

Signatures

 /s/Edward E. Steiner, attorney-in-fact for Armstrong World Industries, Inc. Asbestos Personal Injury Settlement Trust   08/12/2009
**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) On August 10, 2009, pursuant to the terms of a Purchase and Sale Agreement (the "PSA"), the reporting person agreed to sell 7,000,000 shares and, concurrently with the closing of such sale, enter into a prepaid forward sale contract with TPG Partners V, L.P. and TPG Partners VI, L.P. (collectively, "TPG").
(2) The forward sale contract obligates the reporting person to deliver to TPG cash (or elect to deliver 1,039,777 shares) on the settlement date of the forward sale contract. The settlement date is the third currency business day following the 20th scheduled trading day beginning on November 4, 2013. In exchange for assuming this obligation, the reporting person will receive $23,197,425 (determined by multiplying 1,039,777 shares by the per share sale price of $22.31 under the PSA).
(3) The reporting person will pledge 1,039,777 shares of AWI common stock (the "Pledged Shares") to secure its obligations under the forward sale contract. While the reporting person will retain dividend and voting rights in the Pledged Shares during the term of the pledge, the reporting person is obligated to pay TPG dividends received on 1,039,777 shares underlying the forward sale contract.

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