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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1. Name and Address of Reporting Person * Nath Prem   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) Sr Vice Pres of Manufacturing (Last) (First) (Middle) ASCENT SOLAR TECHNOLOGIES, INC., 8120 SHAFFER PARKWAY 3. Date of Earliest Transaction (Month/Day/Year) 12/31/2007 (Street) LITTLETON, CO 80127 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 12/31/2007   M   5,000 A $ 2.73 5,000 D   Common Stock 12/31/2007   S(1)   100 D $ 25.24 4,900 D   Common Stock 12/31/2007   S(1)   500 D $ 25.37 4,400 D   Common Stock 12/31/2007   S(1)   500 D $ 25.38 3,900 D   Common Stock 12/31/2007   S(1)   200 D $ 25.42 3,700 D   Common Stock 12/31/2007   S(1)   100 D $ 25.75 3,600 D   Common Stock 12/31/2007   S(1)   600 D $ 25.8 3,000 D   Common Stock 12/31/2007   S(1)   500 D $ 25.81 2,500 D   Common Stock 12/31/2007   S(1)   2,000 D $ 25.83 500 D   Common Stock 12/31/2007   S(1)   500 D $ 25.84 0 D

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

Common Stock (Right to Buy)

$ 2.73

12/31/2007

M

5,000

07/31/2007(2)

07/31/2016

Common Stock

5,000

$ 2.73

3,333 (3)

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Nath Prem ASCENT SOLAR TECHNOLOGIES, INC. 8120 SHAFFER PARKWAY LITTLETON, CO 80127			Sr Vice Pres of Manufacturing

Signatures

David C. Wang, as attorney-in-fact for Prem Nath		01/03/2008
**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 sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 4, 2007.
(2)	Of the remaining unvested options in this grant, options to purchase 33,333 shares vest on July 31, 2008, and options to purchase 33,334 shares vest on July 31, 2009.
(3)	Mr. Nath also holds the following securities: vested options to purchase 3,333 shares of common stock that expire July 31, 2016; unvested options to purchase 66,667 shares of common stock that expire July 31, 2016; and unvested options to purchase 12,000 shares of common stock that expire on December 3, 2017.

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