Ascent Solar Technologies, Inc. — Director's Dealing 2007

Dec 17, 2007

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Ascent Solar Technologies, Inc. (ASTI)
CIK: 0001350102
Period of Report: 2007-12-17

Reporting Person: Nath Prem (Sr Vice Pres of Manufacturing)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2007-12-17	Common Stock	M	5000	$2.73	Acquired	5000	Direct
2007-12-17	Common Stock	S	500	$19.92	Disposed	4500	Direct
2007-12-17	Common Stock	S	400	$19.96	Disposed	4100	Direct
2007-12-17	Common Stock	S	122	$19.97	Disposed	3978	Direct
2007-12-17	Common Stock	S	1400	$20.02	Disposed	2578	Direct
2007-12-17	Common Stock	S	300	$20.03	Disposed	2278	Direct
2007-12-17	Common Stock	S	100	$20.04	Disposed	2178	Direct
2007-12-17	Common Stock	S	500	$20.07	Disposed	1678	Direct
2007-12-17	Common Stock	S	100	$20.12	Disposed	1578	Direct
2007-12-17	Common Stock	S	100	$20.24	Disposed	1478	Direct
2007-12-17	Common Stock	S	461	$20.25	Disposed	1017	Direct
2007-12-17	Common Stock	S	878	$20.30	Disposed	139	Direct
2007-12-17	Common Stock	S	139	$20.35	Disposed	0	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2007-12-17	Common Stock Option (Right to Buy)	$2.73	M	5000	Disposed	2016-07-31	Common Stock (5000)	Direct

Footnotes

F1: 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.

F2: 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.

F3: Mr. Nath also holds the following securities: vested options to purchase 8,333 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.