Sec Form 4 Filing - Armstrong Joseph H @ Ascent Solar Technologies, Inc. - 2009-07-24

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 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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1. Name and Address of Reporting Person Armstrong Joseph H 2. Issuer Name and Ticker or Trading Symbol Ascent Solar Technologies, Inc. [ ASTI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Vice President and CTO (Last) (First) (Middle) C/O ASCENT SOLAR TECHNOLOGIES, INC., 8120 SHAFFER PARKWAY 3. Date of Earliest Transaction (MM/DD/YY) 07/24/2009 (Street) LITTLETON, CO80127 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 07/24/2009 M 4,500 A $ 0.1 37,833 D Common Stock 07/24/2009 S 4,500 D $ 8.161 33,333 D

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Common Stock Option (Right to Buy) $ 0.1 07/24/2009 M 4,500 12/31/2006( 1 ) 11/18/2015 Common Stock 4,500 $ 0 4,500 ( 2 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Armstrong Joseph H C/O ASCENT SOLAR TECHNOLOGIES, INC. 8120 SHAFFER PARKWAY LITTLETON, CO80127 Vice President and CTO Signatures David C. Wang, as attorney-in-fact for Joseph Armstrong 07/28/2009 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The options vested in the following amounts on the following dates: options to purchase 8,000 shares vested on December 31, 2006, and options to purchase 8,500 shares vested on each of December 31, 2007 and 2008. ( 2 )Dr. Armstrong also holds the following derivative securities: vested options to purchase 18,000 shares of common stock that expire February 27, 2016; vested options to purchase 2,500 shares of common stock that expire on December 3, 2017; vested options to purchase 2,500 shares of common stock that expire December 2, 2018; unvested options to purchase 2,500 shares of common stock that expire on December 3, 2017; and unvested options to purchase 7,500 shares of common stock that expire December 2, 2018.

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).

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