ASTI / Ascent Solar Technologies, Inc. - SEC申報文件，年度報告，委任書

NOTE 12. COMMITMENTS AND CONTINGENCIES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2026 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Techno

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2025 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Techn

ASCENT SOLAR TECHNOLOGIES, INC. 454,546 Shares of Common Stock 1,363,636 Shares of Common Stock Issuable Upon the Exercise of Outstanding Pre-Funded Warrants 1,818,182 Shares of Common Stock Issuable Upon the Exercise of Outstanding Series A Common W

Filed Pursuant to Rule 424(b)(3) Registration No. 333-293097 ASCENT SOLAR TECHNOLOGIES, INC. 454,546 Shares of Common Stock 1,363,636 Shares of Common Stock Issuable Upon the Exercise of Outstanding Pre-Funded Warrants 1,818,182 Shares of Common Stock Issuable Upon the Exercise of Outstanding Series A Common Warrants 909,091 Shares of Common Stock Issuable Upon the Exercise of Outstanding Series B

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241

Correspondence Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241 February 9, 2026 VIA EDGAR Division of Corporation Finance Office of Manufacturing U.S. Securities & Exchange Commission 100 F Street, NE Washington, D.C. 20549 Attn: Jenny O’Shanick RE: Ascent Solar Technologies, Inc. (the “Company”) Registration Statement on Form S-3 (File No. 333-293097) (the “Registration Stat

As filed with the U.S. Securities and Exchange Commission on February 9, 2025.

As filed with the U.S. Securities and Exchange Commission on February 9, 2025. Registration No. 333-293097 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 PRE-EFFECTIVE AMENDMENT NO. 1 TO FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Ascent Solar Technologies, Inc. (Exact name of registrant as specified in its charter) Delaware 3674 20-3672603 (State or o

LETTER

February 6, 2026 Jin Jo Chief Financial Officer Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, Colorado 80241 Re: Ascent Solar Technologies, Inc. Registration Statement on Form S-3 Filed January 30, 2026 File No. 333-293097 Dear Jin Jo: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461 regarding requests

Security Type

Calculation of Filing Fee Tables S-3 Ascent Solar Technologies, Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry For

As filed with the U.S. Securities and Exchange Commission on January 30, 2025.

As filed with the U.S. Securities and Exchange Commission on January 30, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Ascent Solar Technologies, Inc. (Exact name of registrant as specified in its charter) Delaware 3674 20-3672603 (State or other jurisdiction of incorporation or o

SERIES A COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC.

EXHIBIT 4.1 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

PLACEMENT AGENT COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC.

EXHIBIT 4.4 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

AMENDMENT NO. 1 TO SECURITIES PURCHASE AGREEMENT

EXHIBIT 10.3 AMENDMENT NO. 1 TO SECURITIES PURCHASE AGREEMENT This AMENDMENT NO. 1 TO SECURITIES PURCHASE AGREEMENT (this “Amendment”) is made and entered into as of January 23, 2026, between Ascent Solar Technologies, Inc. (the “Company”), and each holder identified on the signature pages hereto (collectively the “Holders”). Capitalized terms not otherwise defined herein shall have the meaning as

REGISTRATION RIGHTS AGREEMENT

EXHIBIT 10.2 REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (this “Agreement”) is made and entered into as of January 23, 2026, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each of the several purchasers signatory hereto (each such purchaser, a “Purchaser” and, collectively, the “Purchasers”). This Agreement is made pursuant to the Securiti

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 23, 2026 ASCENT SOLAR TEC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 23, 2026 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (C

ASCENT SOLAR TECHNOLOGIES ANNOUNCES up to $25 MILLION PRIVATE PLACEMENT PRICED AT-THE-MARKET UNDER NASDAQ RULES $10 million upfront with up to approximately $15 million of potential aggregate proceeds upon the exercise in full of warrants

EXHIBIT 99.1 ASCENT SOLAR TECHNOLOGIES ANNOUNCES up to $25 MILLION PRIVATE PLACEMENT PRICED AT-THE-MARKET UNDER NASDAQ RULES $10 million upfront with up to approximately $15 million of potential aggregate proceeds upon the exercise in full of warrants THORNTON, Colo., Jan. 26, 2026 (GLOBE NEWSWIRE) - Ascent Solar Technologies, Inc. (NASDAQ: ASTI) (“Ascent” or the “Company”), today announced that i

SECURITIES PURCHASE AGREEMENT

EXHIBIT 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of January 23, 2026, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and

SERIES B COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC.

EXHIBIT 4.2 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

PRE-FUNDED COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC.

EXHIBIT 4.3 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

ASCENT SOLAR TECHNOLOGIES, INC. 769,232 Shares of Common Stock 256,411 Shares of Common Stock Issuable Upon the Exercise of Outstanding Pre-Funded Warrants 1,025,643 Shares of Common Stock Issuable Upon the Exercise of Outstanding Series A Common War

Filed Pursuant to Rule 424(b)(3) Registration No. 333-292425 ASCENT SOLAR TECHNOLOGIES, INC. 769,232 Shares of Common Stock 256,411 Shares of Common Stock Issuable Upon the Exercise of Outstanding Pre-Funded Warrants 1,025,643 Shares of Common Stock Issuable Upon the Exercise of Outstanding Series A Common Warrants 1,025,643 Shares of Common Stock Issuable Upon the Exercise of Outstanding Series B

LETTER

January 2, 2026 Jin Jo Chief Financial Officer Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, Colorado 80241 Re: Ascent Solar Technologies, Inc. Registration Statement on Form S-3 Filed December 23, 2025 File No. 333-292425 Dear Jin Jo: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461 regarding requests

EMPLOYMENT AGREEMENT

EXHIBIT 10.3 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”) is made, entered into and effective as of January 1, 2026 (the “Effective Date”), by and between Ascent Solar Technologies, Inc. (the “Company”) and Jin Jo (the “Executive”). The Company and the Executive, each intending to be legally bound by the terms hereof, agree as follows: 1. Employment Term. Executive shall be em

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241 December 31, 2025 VIA EDGAR Division of Corporation Finance Office of Manufacturing U.S. Securities & Exchange Commission 100 F Street, NE Washington, D.C. 20549 Attn: Kristin Baldwin RE: Ascent Solar Technologies, Inc. (the “Company”) Registration Statement on Form S-3 (File No. 333-292425) (the “Registration Statement”) Dear M

EMPLOYMENT AGREEMENT

EXHIBIT 10.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”) is made, entered into and effective as of January 1, 2026 (the “Effective Date”), by and between Ascent Solar Technologies, Inc. (the “Company”) and Paul Warley (the “Executive”). The Company and the Executive, each intending to be legally bound by the terms hereof, agree as follows: 1. Employment Term. Executive shall

EMPLOYMENT AGREEMENT

EXHIBIT 10.2 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”) is made, entered into and effective as of January 1, 2026 (the “Effective Date”), by and between Ascent Solar Technologies, Inc. (the “Company”) and Bobby Gulati (the “Executive”). The Company and the Executive, each intending to be legally bound by the terms hereof, agree as follows: 1. Employment Term. Executive shall

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 31, 2025 ASCENT SOLAR TE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 31, 2025 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (

As filed with the U.S. Securities and Exchange Commission on December 23, 2025.

As filed with the U.S. Securities and Exchange Commission on December 23, 2025. Registration No. 333-291104 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 To FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Ascent Solar Technologies, Inc. (Exact name of registrant as specified in its charter) Delaware 3674 20-3672603 (State or other jurisdic

Security Type

Calculation of Filing Fee Tables S-3 Ascent Solar Technologies, Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry For

As filed with the U.S. Securities and Exchange Commission on December 23, 2025.

As filed with the U.S. Securities and Exchange Commission on December 23, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Ascent Solar Technologies, Inc. (Exact name of registrant as specified in its charter) Delaware 3674 20-3672603 (State or other jurisdiction of incorporation or

ASCENT SOLAR TECHNOLOGIES ANNOUNCES CLOSING OF UP TO $5.5 MILLION PRIVATE PLACEMENT PRICED AT-THE-MARKET UNDER NASDAQ RULES $2 million upfront with up to approximately $3.5 million of potential aggregate proceeds upon the exercise in full of warrants

Exhibit 99.2 ASCENT SOLAR TECHNOLOGIES ANNOUNCES CLOSING OF UP TO $5.5 MILLION PRIVATE PLACEMENT PRICED AT-THE-MARKET UNDER NASDAQ RULES $2 million upfront with up to approximately $3.5 million of potential aggregate proceeds upon the exercise in full of warrants THORNTON, Colo., Dec. 8, 2025 (GLOBE NEWSWIRE) - Ascent Solar Technologies, Inc. (NASDAQ: ASTI) (“Ascent” or the “Company”), today annou

PRE-FUNDED COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC.

EXHIBIT 4.3 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

PLACEMENT AGENT COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC.

EXHIBIT 4.4 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 5, 2025 ASCENT SOLAR TEC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 5, 2025 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (C

SECURITIES PURCHASE AGREEMENT

EXHIBIT 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of December 5, 2025, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and

REGISTRATION RIGHTS AGREEMENT

EXHIBIT 10.2 REGISTRATION RIGHTS AGREEMENT This Registration Rights Agreement (this “Agreement”) is made and entered into as of December 5, 2025, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each of the several purchasers signatory hereto (each such purchaser, a “Purchaser” and, collectively, the “Purchasers”). This Agreement is made pursuant to the Securiti

ASCENT SOLAR TECHNOLOGIES ANNOUNCES UP TO $5.5 MILLION PRIVATE PLACEMENT PRICED AT-THE-MARKET UNDER NASDAQ RULES $2 million upfront with up to approximately $3.5 million of potential aggregate proceeds upon the exercise in full of warrants

Exhibit 99.1 ASCENT SOLAR TECHNOLOGIES ANNOUNCES UP TO $5.5 MILLION PRIVATE PLACEMENT PRICED AT-THE-MARKET UNDER NASDAQ RULES $2 million upfront with up to approximately $3.5 million of potential aggregate proceeds upon the exercise in full of warrants THORNTON, Colo., Dec. 8, 2025 (GLOBE NEWSWIRE) - Ascent Solar Technologies, Inc. (NASDAQ: ASTI) (“Ascent” or the “Company”), today announced that i

SERIES A COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC.

EXHIBIT 4.1 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

SERIES B COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC.

EXHIBIT 4.2 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTR

NOTE 16. COMMITMENTS AND CONTINGENCIES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2025 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Te

Security Type

Calculation of Filing Fee Tables S-3 Ascent Solar Technologies, Inc. Table 1: Newly Registered and Carry Forward Securities ☐Not Applicable Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry For

As filed with the U.S. Securities and Exchange Commission on October 27, 2025.

As filed with the U.S. Securities and Exchange Commission on October 27, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-3 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Ascent Solar Technologies, Inc. (Exact name of registrant as specified in its charter) Delaware 3674 20-3672603 (State or other jurisdiction of incorporation or o

ASCENT SOLAR TECHNOLOGIES, INC., as [ ], as INDENTURE TRUSTEE Dated as of [ ] TABLE OF CONTENTS

Exhibit 4.9 ASCENT SOLAR TECHNOLOGIES, INC., as ISSUER and [ ], as INDENTURE TRUSTEE INDENTURE Dated as of [ ] TABLE OF CONTENTS Page ARTICLE I DEFINITIONS AND INCORPORATION BY REFERENCE 1 Section 1.01 Definitions 1 Section 1.02 Other Definitions 4 Section 1.03 Incorporation by Reference of Trust Indenture Act 4 Section 1.04 Rules of Construction 4 ARTICLE II THE SECURITIES 4 Section 2.01 Issuable

Ascent Solar Technologies, Inc. Up to $758,818 Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-267971 PROSPECTUS SUPPLEMENT (to Prospectus Supplements Dated May 16, 2024, May 23, 2024, and May 30, 2024 to Prospectus Dated November 7, 2022) Ascent Solar Technologies, Inc. Up to $758,818 Common Stock This prospectus supplement (this “Supplement”) amends, modifies, supersedes and supplements certain information contained in, and should be r

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 20, 2025 ASCENT SOLAR TECH

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 20, 2025 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Co

NOTE 15. COMMITMENTS AND CONTINGENCIES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Technol

Ascent Solar Technologies, Inc. Corporate Presentation August 2025

Exhibit 99.2 Ascent Solar Technologies, Inc. Corporate Presentation August 2025 www.ascentsolar.com Page | 2 COPYRIGHT © 2024 Ascent Solar Technologies, Inc. NASDAQ: ASTI Forward - Looking Statements Certain statements in this presentation may constitute "forward - looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995.These forward - looking statements rela

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2025 ASCENT SOLAR TECHN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 6, 2025 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Com

Ascent Solar Technologies Provides Corporate Update Detailing Customer Pipeline and Sales Progress in Space and Aerospace Industries

Exhibit 99.1 Ascent Solar Technologies Provides Corporate Update Detailing Customer Pipeline and Sales Progress in Space and Aerospace Industries THORNTON, Colo., August 6, 2025 (GLOBE NEWSWIRE) - Ascent Solar Technologies, (Nasdaq: ASTI) (“Ascent'' or the “Company”), the leading U.S. innovator in the design and manufacture of featherweight, flexible, and durable CIGS thin-film photovoltaic (PV) s

Form of 2025 Pre-Funded Warrant (incorporated by reference to Exhibit 4.2 to our Current Report on Form 8-K filed on June 30, 2025)

Exhibit 4.2 PRE-FUNDED COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Issue Date: , 2025 Initial Exercise Date: , 2025 THIS PRE-FUNDED COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any ti

Form of 2025 Common Warrant (incorporated by reference to Exhibit 4.1 to our Current Report on Form 8-K filed on June 30, 2025)

Exhibit 4.1 COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Issue Date: , 2025 Initial Exercise Date: , 2025 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the dat

Form of 2025 Placement Agent Warrant (incorporated by reference to Exhibit 4.3 to our Current Report on Form 8-K filed on June 30, 2025)

Exhibit 4.3 PLACEMENT AGENT COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Issue Date: , 2025 Initial Exercise Date: , 2025 THIS PLACEMENT AGENT COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth,

ASCENT SOLAR TECHNOLOGIES, INC. 507,000 SHARES OF COMMON STOCK AND 507,000 ACCOMPANYING WARRANTS TO PURCHASE UP TO 507,000 SHARES OF COMMON STOCK 493,000 PRE-FUNDED WARRANTS TO PURCHASE UP TO 493,000 SHARES OF COMMON STOCK AND ACCOMPANYING WARRANTS T

Filed Pursuant to Rule 424(b)(4) Registration No. 333-288300 ASCENT SOLAR TECHNOLOGIES, INC. 507,000 SHARES OF COMMON STOCK AND 507,000 ACCOMPANYING WARRANTS TO PURCHASE UP TO 507,000 SHARES OF COMMON STOCK 493,000 PRE-FUNDED WARRANTS TO PURCHASE UP TO 493,000 SHARES OF COMMON STOCK AND ACCOMPANYING WARRANTS TO PURCHASE UP TO 493,000 SHARES OF COMMON STOCK 70,000 PLACEMENT AGENT WARRANTS TO PURCHA

Form of 2025 Securities Purchase Agreement (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on June 30, 2025)

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of June 27, 2025, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and con

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 27, 2025 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Comm

Ascent Solar Technologies, Inc. Announces Pricing of $2.0 Million Public Offering

Exhibit 99.1 Ascent Solar Technologies, Inc. Announces Pricing of $2.0 Million Public Offering THORNTON, Colo., June 27, 2025 (GLOBE NEWSWIRE) - Ascent Solar Technologies, Inc. (NASDAQ: ASTI) (“Ascent” or the “Company”), the leading U.S. innovator in the design and manufacture of featherweight, flexible, and durable CIGS thin-film photovoltaic (PV) solutions, today announced the pricing of a publi

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 27, 2025 (June 26, 2025) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of inco

Ascent Solar Technologies Enters into Teaming Agreement to Supply US-based Defense Solutions Provider with Thin-Film Solar Technology for Orbital Application

EXHIBIT 99.2 Ascent Solar Technologies Enters into Teaming Agreement to Supply US-based Defense Solutions Provider with Thin-Film Solar Technology for Orbital Application THORNTON, Colo., June 27, 2025 – Ascent Solar Technologies (“Ascent” or the “Company”) (Nasdaq: ASTI), the leading U.S. innovator in the design and manufacturing of featherweight, flexible thin-film photovoltaic (PV) solutions, a

Ascent Solar Technologies Enters Collaborative Agreement Notice with NASA to Advance Development of Thin-Film PV Power Beaming Capabilities

EXHIBIT 99.1 Ascent Solar Technologies Enters Collaborative Agreement Notice with NASA to Advance Development of Thin-Film PV Power Beaming Capabilities THORNTON, Colo., June 26, 2025 - Ascent Solar Technologies (Nasdaq: ASTI) (“Ascent” or the “Company”), the leading U.S. innovator in the design and manufacture of featherweight, flexible, and durable CIGS thin-film photovoltaic (PV) solutions, ann

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241

Correspondence Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241 June 26, 2025 VIA EDGAR Division of Corporation Finance Office of Manufacturing U.S. Securities & Exchange Commission 100 F Street, NE Washington, D.C. 20549 Attn: Eranga Dias RE: Ascent Solar Technologies, Inc. (the “Company”) Registration Statement on Form S-1 (File No. 333-288300) (the “Registration Statement”)

June 26, 2025

Correspondence June 26, 2025 VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance Washington, DC 20549 Re: Ascent Solar Technologies, Inc. Registration Statement on Form S-1 (File No. 333-288300) – Concurrence in Acceleration Request Ladies and Gentlemen: H.C. Wainwright & Co., LLC (“Wainwright”), solely acting as placement agent on a best efforts basis in an offering

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241

Correspondence Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241 June 26, 2025 VIA EDGAR Division of Corporation Finance Office of Manufacturing U.S. Securities & Exchange Commission 100 F Street, NE Washington, D.C. 20549 Attn: Eranga Dias RE: Ascent Solar Technologies, Inc. (the “Company”) Registration Statement on Form S-1 (File No. 333-288300) (the “Registration Statement”)

Form of 2025 Securities Purchase Agreement

Exhibit 10.28 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of [ ], 2025, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively the “Purchasers”). WHEREAS, subject to the terms and condit

Form of 2025 Common Warrant

Exhibit 4.16 COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Issue Date: , 2025 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the [Stockholder Approval Date][1] (

Form of 2025 Prefunded Warrant

Exhibit 4.17 PRE-FUNDED COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Issue Date: , 2025 Initial Exercise Date: , 2025 THIS PRE-FUNDED COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any t

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Ascent Solar Technologies, Inc.

As filed with the Securities and Exchange Commission on June 25, 2025.

As filed with the Securities and Exchange Commission on June 25, 2025. Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 Ascent Solar Technologies, Inc. (Exact name of registrant as specified in its charter) Delaware 36741 20-3672603 (State or other jurisdiction of incorporation or organiza

Form of 2025 Placement Agent Warrant

Exhibit 4.18 PLACEMENT AGENT COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Issue Date: , 2025 THIS PLACEMENT AGENT COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the

LETTER

June 24, 2025 Paul Warley Chief Executive Officer Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241 Re: Ascent Solar Technologies, Inc. Draft Registration Statement on Form S-1 Submitted June 20, 2025 CIK No. 0001350102 Dear Paul Warley: This is to advise you that we do not intend to review your registration statement. We request that you publicly file your registration stateme

Denver, Colorado 80202

CARROLL LEGAL LLC Denver, Colorado 80202 James H. Carroll, Esq. +1 303 888 4859 [email protected] June 20, 2025 CONFIDENTIAL SUBMISSION VIA EDGAR U.S. Securities and Exchange Commission Division of Corporation Finance 100 F. Street, N.E. Washington, D.C. 20549 Re: Ascent Solar Technologies, Inc. Draft Registration Statement on Form S-1 Ladies and Gentlemen: On behalf of Ascent Solar Technolog

As confidentially submitted to the Securities and Exchange Commission on June [***], 2025. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information contained herein remains confiden

DRS 1 filename1.htm As confidentially submitted to the Securities and Exchange Commission on June [***], 2025. This draft registration statement has not been publicly filed with the Securities and Exchange Commission and all information contained herein remains confidential. Registration No. 333-[***] UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-1 REGISTRATION STA

Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Company, dated June 4, 2025. (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed June 4, 2025)

Exhibit 3.1

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 9, 2025 (June 4, 2025) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorp

Filed herewith

Exhibit 107 CALCULATION OF REGISTRATION FEE Form S-8 (Form Type) Ascent Solar Technologies, Inc.

As filed with the U.S. Securities and Exchange Commission on May 29, 2025

As filed with the U.S. Securities and Exchange Commission on May 29, 2025 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of Registrant as specified in its charter) Delaware 47-3324725 (State or other jurisdiction of Incorporation or organizatio

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 29, 2025 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Commi

Ascent Solar 2023 Equity Incentive Plan (as amended through May 29, 2025) (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on May 29, 2025))

Exhibit 10.1 ASCENT SOLAR TECHNOLOGIES, INC. 2023 EQUITY INCENTIVE PLAN (As amended at the 2025 Annual Stockholders Meeting) 1. GENERAL. (a) Eligible Award Recipients. Employees, Directors and Consultants are eligible to receive Awards. (b) Available Awards. The Plan provides for the grant of the following Awards: (i) Incentive Stock Options, (ii) Nonstatutory Stock Options, (iii) Stock Appreciati

NOTE 15. COMMITMENTS AND CONTINGENCIES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Techno

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

Description of Securities (incorporated by reference to Exhibit 4.4 to our Annual Report on Form 10-K filed March 31, 2025)

Exhibit 4.4 DESCRIPTION OF THE REGISTRANT’S COMMON STOCK REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES AND EXCHANGE ACT OF 1934, AS AMENDED The common stock of Ascent Solar Technologies, Inc. is registered under Section 12 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Our shares of common stock are traded on the Nasdaq Stock Market under the trading symbol “ASTI.”

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Techn

Ascent Solar Insider Trading Policy (incorporated by reference to Exhibit 19.1 to our Annual Report on Form 10-K filed March 31, 2025)

ASCENT SOLAR TECHNOLOGIES, INC. Insider Trading Policy Adopted January 2022 In order to take an active role in the prevention of insider trading violations by officers, directors, employees and other related individuals of Ascent Solar Technologies, Inc. (the “Company”) and its subsidiaries, the Company has adopted this Insider Trading Policy (the “Policy”). Statement of Intent The Company opposes

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 13, 2025 (March 7, 2025) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of inc

Fourth Amendment to Second Amended and Restated Bylaws (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed March 13, 2025)

Exhibit 3.1 FOURTH AMENDMENT TO SECOND AMENDED AND RESTATED BYLAWS OF ASCENT SOLAR TECHNOLOGIES, INC. The undersigned, being the President and CEO of Ascent Solar Technologies, Inc., a Delaware corporation (the “Corporation”), hereby certifies that the Corporation's Second and Amended and Restated Bylaws, dated February 10, 2009 (the “Bylaws”), were amended by a resolution of the Corporation's Boa

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Te

Certificate of Designations of Rights and Preferences of Series 1C Convertible Preferred Stock dated October 17, 2024 (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed on October 23, 2024)

Exhibit 3.1 CERTIFICATE OF DESIGNATIONS OF RIGHTS AND PREFERENCES OF SERIES 1C CONVERTIBLE PREFERRED STOCK OF ASCENT SOLAR TECHNOLOGIES, INC. I, Jin Jo, hereby certify that I am the Chief Financial Officer and Treasurer of Ascent Solar Technologies, Inc. (the “Company”), a corporation organized and existing under the Delaware General Corporation Law (the “DGCL”), and further do hereby certify: Tha

Form of Series 1C Convertible Preferred Stock Securities Purchase Agreement dated October 17, 2024

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of October 17, 2024, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively, the “Purchasers”). WHEREAS, subject to the terms and

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 23, 2024 (October 17, 2024) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction o

As filed with the U.S. Securities and Exchange Commission on August 21, 2024

As filed with the U.S. Securities and Exchange Commission on August 21, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of Registrant as specified in its charter) Delaware 47-3324725 (State or other jurisdiction of Incorporation or organiza

Filed herewith

Exhibit 107 CALCULATION OF REGISTRATION FEE Form S-8 (Form Type) Ascent Solar Technologies, Inc.

Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Company dated August 13, 2024 (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed on August 19, 2024)

Exhibit 3.1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 19, 2024 (August 14, 2024)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 19, 2024 (August 14, 2024) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of

Ascent Solar 2023 Equity Incentive Plan

Exhibit 10.1 ASCENT SOLAR TECHNOLOGIES, INC. 2023 EQUITY INCENTIVE PLAN (As amended at the 2024 Annual Stockholders Meeting) 1. GENERAL. (a) Eligible Award Recipients. Employees, Directors and Consultants are eligible to receive Awards. (b) Available Awards. The Plan provides for the grant of the following Awards: (i) Incentive Stock Options, (ii) Nonstatutory Stock Options, (iii) Stock Appreciati

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 13, 2024 (August 7, 2024) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of i

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Technol

Certificate of Designation of Series Z Preferred Stock dated June 20, 2024 (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed on June 21, 2024)

Exhibit 3.1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2024 (June 20, 2024) ASC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 21, 2024 (June 20, 2024) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of inco

Securities Purchase Agreement dated June 20, 2024 between Ascent Solar Technologies, Inc. and Paul Warley (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on June 21, 2024)

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of June 20, 2024, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and the purchaser identified on the signature page hereto (the “Purchaser”). WHEREAS, subject to the terms and conditions set forth in this Agreement and pursuant to Section 4(a)(2) of the Sec

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 14, 2024 (June 11, 2024) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of inco

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 30, 2024 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Commi

Ascent Solar Technologies, Inc. Up to $3,981,000 Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-267971 PROSPECTUS SUPPLEMENT (To Prospectus Dated November 7, 2022) Ascent Solar Technologies, Inc. Up to $3,981,000 Common Stock We have entered into an at the market offering agreement (the “Offering Agreement”), dated May 16, 2024, with H.C. Wainwright & Co., LLC, as sales agent (the “Sales Agent” or “Wainwright”), relating to the sale of ou

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 23, 2024 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Commi

Ascent Solar Technologies, Inc. Up to $4,344,000 Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-267971 PROSPECTUS SUPPLEMENT (To Prospectus Dated November 7, 2022) Ascent Solar Technologies, Inc. Up to $4,344,000 Common Stock We have entered into an at the market offering agreement (the “Offering Agreement”), dated May 16, 2024, with H.C. Wainwright & Co., LLC, as sales agent (the “Sales Agent” or “Wainwright”), relating to the sale of ou

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 16, 2024 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Commi

Ascent Solar Technologies, Inc. Up to $4,219,000 Common Stock

Filed Pursuant to Rule 424(b)(5) Registration No. 333-267971 PROSPECTUS SUPPLEMENT (To Prospectus Dated November 7, 2022) Ascent Solar Technologies, Inc. Up to $4,219,000 Common Stock We have entered into an at the market offering agreement (the “Offering Agreement”), dated May 16, 2024, with H.C. Wainwright & Co., LLC, as sales agent (the “Sales Agent” or “Wainwright”), relating to the sale of ou

At The Market Offering Agreement, dated May 16, 2024, by and between Ascent Solar Technologies, Inc. and H.C. Wainwright & Co., LLC (incorporated by reference to Exhibit 10.1 to our Current report on Form 8-K filed on May 16, 2024)

EXHIBIT 10.1 AT THE MARKET OFFERING AGREEMENT May 16, 2024 H.C. Wainwright & Co., LLC 430 Park Avenue, 3rd Floor New York, New York 10022 Ladies and Gentlemen: Ascent Solar Technologies, Inc., a corporation organized under the laws of Delaware (the “Company”), confirms its agreement (this “Agreement”) with H.C. Wainwright & Co., LLC (the “Manager”) as follows: 1. Definitions. The terms that follow

2024 Placement Agency Agreement (incorporated by reference to Exhibit 1.1 to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2024)

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT Dawson James Securities, Inc. 1 North Federal Highway Boca Raton, Florida 33432 April 9, 2024 Ladies and Gentlemen: This letter (this “Agreement”) constitutes the agreement between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”) and Dawson James Securities, Inc. (“Dawson”) pursuant to which Dawson shall serve as the placement agent (th

Form of 2024 Common Stock Warrants issued to extend the Warrant Repurchase Agreements (incorporated by reference to Exhibit 4.13 to our Quarterly Report on Form 10-Q for the quarter ended March 31, 2024)

Exhibit 4.13 NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGIST

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Techno

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 18, 2024 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Com

Cedar Loan Agreement dated April 17, 2024 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on April 18, 2024)

Exhibit 10.1

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 12, 2024 (April 12, 2024) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of in

ASCENT SOLAR TECHNOLOGIES, INC. UP TO 42,857,142 SHARES OF COMMON STOCK OR PRE-FUNDED WARRANTS TO PURCHASE ONE SHARE OF COMMON STOCK

Filed Pursuant to Rule 424(b)(4) Registration No. 333-277070 Prospectus ASCENT SOLAR TECHNOLOGIES, INC. $6,000,000 UP TO 42,857,142 SHARES OF COMMON STOCK OR PRE-FUNDED WARRANTS TO PURCHASE ONE SHARE OF COMMON STOCK We are offering on a best efforts basis up to 42,857,142 shares of common stock at a public offering price of $0.14 per share, for gross proceeds of approximately $6.0 million in this

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241

Correspondence Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241 April 9, 2024 VIA EDGAR Division of Corporation Finance Office of Manufacturing U.S. Securities & Exchange Commission 100 F Street, NE Washington, D.C. 20549 Attn: Erin Donahue RE: Ascent Solar Technologies, Inc. (the “Company”) Registration Statement on Form S-1 (File No. 333-277070) (the “Registration Statement”

As filed with the Securities and Exchange Commission on April 9, 2024

As filed with the Securities and Exchange Commission on April 9, 2024 Registration No.

Form of Placement Agent Agreement

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT Dawson James Securities, Inc. 1 North Federal Highway Boca Raton, Florida 33432 April [], 2024 Ladies and Gentlemen: This letter (this “Agreement”) constitutes the agreement between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”) and Dawson James Securities, Inc. (“Dawson”) pursuant to which Dawson shall serve as the placement agent (t

DAWSON JAMES SECURITIES INC. 101 North Federal Highway Suite 600 Boca Raton, Fl 33432 April 9, 2024

Correspondence DAWSON JAMES SECURITIES INC. 101 North Federal Highway Suite 600 Boca Raton, Fl 33432 April 9, 2024 VIA EDGAR Division of Corporation Finance Office of Manufacturing U.S. Securities & Exchange Commission 100 F Street, NE Washington, D.C. 20549 Attn: Erin Donahue RE: Ascent Solar Technologies, Inc. (the “Company”) Registration Statement on Form S-1 (File No. 333-277070) (the “Registr

Form of 2024 Placement Agent’s Warrant

Exhibit 4.4 THE REGISTERED HOLDER OF THIS COMMON STOCK PURCHASE WARRANT BY ITS ACCEPTANCE HEREOF, AGREES THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS PURCHASE WARRANT EXCEPT AS HEREIN PROVIDED AND THE REGISTERED HOLDER OF THIS PURCHASE WARRANT AGREES THAT IT WILL NOT SELL, TRANSFER, ASSIGN, PLEDGE OR HYPOTHECATE THIS PURCHASE WARRANT FOR A PERIOD OF ONE HUNDRED EIGHTY DAYS FOLLOWING [●], 2024, W

As filed with the Securities and Exchange Commission on April 5, 2024

As filed with the Securities and Exchange Commission on April 5, 2024 Registration No.

Form of Placement Agent Agreement

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT Dawson James Securities, Inc. 1 North Federal Highway Boca Raton, Florida 33432 April [], 2024 Ladies and Gentlemen: This letter (this “Agreement”) constitutes the agreement between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”) and Dawson James Securities, Inc. (“Dawson”) pursuant to which Dawson shall serve as the placement agent (t

Form of 2024 Placement Agent’s Warrant

Exhibit 4.4 THE REGISTERED HOLDER OF THIS COMMON STOCK PURCHASE WARRANT BY ITS ACCEPTANCE HEREOF, AGREES THAT IT WILL NOT SELL, TRANSFER OR ASSIGN THIS PURCHASE WARRANT EXCEPT AS HEREIN PROVIDED AND THE REGISTERED HOLDER OF THIS PURCHASE WARRANT AGREES THAT IT WILL NOT SELL, TRANSFER, ASSIGN, PLEDGE OR HYPOTHECATE THIS PURCHASE WARRANT FOR A PERIOD OF ONE HUNDRED EIGHTY DAYS FOLLOWING [●], 2024, W

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Ascent Solar Technologies, Inc.

Filed herewith

Exhibit 107 CALCULATION OF REGISTRATION FEE Form S-8 (Form Type) Ascent Solar Technologies, Inc.

As filed with the U.S. Securities and Exchange Commission on March 29, 2024

As filed with the U.S. Securities and Exchange Commission on March 29, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM S-8 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of Registrant as specified in its charter) Delaware 47-3324725 (State or other jurisdiction of Incorporation or organizat

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 11, 2024 (March 5, 2024) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of inc

Warrant Repurchase Agreement dated March 6, 2024 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on March 7, 2024)

Exhibit 10.1 WARRANT REPURCHASE AGREEMENT This Warrant Repurchase Agreement (the “Agreement”) is entered into as of the 6th day of March, 2024 by and among Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and the investor signatory hereto (the “Holder”), with reference to the following facts: A. Prior to the date hereof, pursuant to that Securities Purchase Contract, dated

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 7, 2024 (March 6, 2024) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of inco

Warrant Repurchase Agreement dated March 7, 2024 (incorporated by reference to Exhibit 10.2 to our Current Report on Form 8-K filed on March 7, 2024)

Exhibit 10.2 WARRANT REPURCHASE AGREEMENT This Warrant Repurchase Agreement (the “Agreement”) is entered into as of the 7th day of March, 2024 by and among Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and the investor signatory hereto (the “Holder”), with reference to the following facts: A. Prior to the date hereof, pursuant to that Securities Purchase Contract, dated

Form of 2024 Pre-Funded Warrant (incorporated by reference to Exhibit 4.6 to our Registration Statement on Form S-1 Amendment No. 1 filed on February 23, 2024)

Exhibit 4.6 PRE-FUNDED COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: [], 2024 CUSIP: THIS PRE-FUNDED COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, CEDE & CO. or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any t

Form of 2024 Pre-Funded Warrant Agency Agreement (incorporated by reference to Exhibit 4.8 filed with Amendment No. 1 to the Company’s Registration on Form S-1 (File no. 333-277070) filed on February 23, 2024)

Exhibit 4.8 WARRANT AGENCY AGREEMENT WARRANT AGENCY AGREEMENT, dated as of February [], 2024 (“Agreement”), between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and Computershare, Inc., a Delaware corporation (“Computershare”), and its affiliate Computershare Trust Company, N.A. a federally chartered trust company (collectively with Computershare, the “Warrant Agent”).

Form of 2024 Common Warrant Agency Agreement

Exhibit 4.7 WARRANT AGENCY AGREEMENT WARRANT AGENCY AGREEMENT, dated as of February [], 2024 (“Agreement”), between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and Computershare, Inc., a Delaware corporation (“Computershare”), and its affiliate Computershare Trust Company, N.A. a federally chartered trust company (collectively with Computershare, the “Warrant Agent”).

Form of 2024 Common Warrant

Exhibit 4.4 COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: [], 2024 CUSIP: THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, CEDE & CO. or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the da

Form of 2024 Placement Agent’s Warrant

Exhibit 4.5 COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: [], 2024 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, Dawson James Securities, Inc. or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or

As filed with the Securities and Exchange Commission on February 23, 2024

As filed with the Securities and Exchange Commission on February 23, 2024 Registration No.

2024 Placement Agent Agreement (incorporated by reference to Exhibit 1.1 filed with Amendment No. 3 to the Company’s Registration on Form S-1 (File no. 333-274231))

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT Dawson James Securities, Inc. 1 North Federal Highway Boca Raton, Florida 33432 February [], 2024 Ladies and Gentlemen: This letter (this “Agreement”) constitutes the agreement between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”) and Dawson James Securities, Inc. (“Dawson”) pursuant to which Dawson shall serve as the placement agent

Form of 2024 Securities Purchase Agreement

Exhibit 4.9 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of [], 2024, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively, the “Purchasers”). WHEREAS, subject to the terms and conditio

Ascent Solar Technologies, Inc. Rule 10D-1 Clawback Policy

ASCENT SOLAR TECHNOLOGIES, INC. POLICY REGARDING THE RECOUPMENT OF CERTAIN PERFORMANCE-BASED COMPENSATION PAYMENTS Purpose and Scope. This policy sets forth the conditions under which Ascent Solar Technologies, Inc. (the “Company”) will seek reimbursement with respect to incentive-based compensation received by, and to recover profits realized from the sale of shares of the Company’s common stock

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Techn

LETTER

United States securities and exchange commission logo February 20, 2024 Paul Warley Chief Executive Officer Ascent Solar Technologies, Inc.

As filed with the Securities and Exchange Commission on February 14, 2024

As filed with the Securities and Exchange Commission on February 14, 2024 Registration No.

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Ascent Solar Technologies, Inc.

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 15, 2023 (December 11, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction

Ascent Solar 2023 Equity Incentive Plan

Exhibit 10.1 ASCENT SOLAR TECHNOLOGIES, INC. 2023 EQUITY INCENTIVE PLAN 1.GENERAL. (a)Eligible Award Recipients. Employees, Directors and Consultants are eligible to receive Awards. (b)Available Awards. The Plan provides for the grant of the following Awards: (i) Incentive Stock Options, (ii) Nonstatutory Stock Options, (iii) Stock Appreciation Rights, (iv) Restricted Stock Awards, (v) Restricted

Regulation FD Disclosure, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 6, 2023 (December 5, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction o

Ascent Solar Technologies, Inc. Announces Adjournment of Annual Meeting, Information for Reconvened Annual Meeting

Exhibit 99.1 Ascent Solar Technologies, Inc. Announces Adjournment of Annual Meeting, Information for Reconvened Annual Meeting THORNTON, Colo., December 6, 2023 (GLOBE NEWSWIRE) - Ascent Solar Technologies, Inc. (“Ascent Solar” or the “Company”) (Nasdaq: ASTI), a U.S. innovator in the design and manufacturing of featherweight, flexible thin-film photovoltaic (PV) solutions, today announced that i

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 4, 2023 (December 1, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Te

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Definitive Proxy State

Employment Agreement between the Company and Jin Jo dated as of October 19, 2023 (incorporated by reference to Exhibit 10.2 to our Current Report on Form 8-K filed on October 23, 2023)

Exhibit 10.2 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”) is made and entered into this October 19, 2023 but with an effective date as of April 17, 2023 (the “Effective Date”), by and between Ascent Solar Technologies, Inc. (the “Company”) and Jin Jo (the “Executive”). The Company and the Executive, each intending to be legally bound by the terms hereof, agree as follows: 1. E

Employment Agreement between the Company and Bobby Gulati dated as of October 19, 2023 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on October 23, 2023)

Exhibit 10.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”) is made and entered into this October 19, 2023 but with an effective date as of April 17, 2023 (the “Effective Date”), by and between Ascent Solar Technologies, Inc. (the “Company”) and Bobby Gulati (the “Executive”). The Company and the Executive, each intending to be legally bound by the terms hereof, agree as follows

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 23, 2023 (October 19, 202

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 23, 2023 (October 19, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction o

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☒ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Definitive Proxy State

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 11, 2023 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (C

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 10, 2023 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 4, 2023 (September 28, 20

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 4, 2023 (September 28, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction

ASCENT SOLAR TECHNOLOGIES, INC. 3,572,635 UNITS CONSISTING OF ONE SHARE OF COMMON STOCK, OR ONE PRE-FUNDED WARRANT TO PURCHASE ONE SHARE OF COMMON STOCK, AND ONE WARRANT TO PURCHASE ONE SHARE OF COMMON STOCK

Filed Pursuant to Rule 424(b)(4) Registration No. 333-274231 Prospectus ASCENT SOLAR TECHNOLOGIES, INC. 3,572,635 UNITS CONSISTING OF ONE SHARE OF COMMON STOCK, OR ONE PRE-FUNDED WARRANT TO PURCHASE ONE SHARE OF COMMON STOCK, AND ONE WARRANT TO PURCHASE ONE SHARE OF COMMON STOCK We are offering on a best efforts basis 3,572,635 units, each consisting of one share of our common stock, par value $0.

As filed with the Securities and Exchange Commission on September 27, 2023

As filed with the Securities and Exchange Commission on September 27, 2023 Registration No.

Form of Pre-Funded Warrant (incorporated by reference to Exhibit 4.6 to our Registration Statement on Form S-1/A filed on September 25, 2023 (Reg. No. 333-274231))

Exhibit 4.6 PRE-FUNDED COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: September [], 2023 CUSIP: THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, CEDE & CO. or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any ti

Form of Pre-Funded Warrant Agency Agreement (incorporated by reference to Exhibit 4.8 to our Registration Statement on Form S-1/A filed on September 25, 2023 (Reg. No. 333-274231))

Exhibit 4.8 WARRANT AGENCY AGREEMENT WARRANT AGENCY AGREEMENT, dated as of September [], 2023 (“Agreement”), between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and Computershare, Inc., a Delaware corporation (“Computershare”), and its affiliate Computershare Trust Company, N.A. a federally chartered trust company (collectively with Computershare, the “Warrant Agent”).

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241

Correspondence Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241 September 25, 2023 VIA EDGAR Division of Corporation Finance Office of Manufacturing U.S. Securities & Exchange Commission 100 F Street, NE Washington, D.C. 20549 Attn: Gregory Herbers RE: Ascent Solar Technologies, Inc. (the “Company”) Registration Statement on Form S-1 (File No. 333-274231) (the “Registration St

Placement Agent Agreement (incorporated by reference to Exhibit 1.1 filed with Amendment No. 3 to the Company’s Registration on Form S-1 (File no. 333-274231))

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT Dawson James Securities, Inc. 1 North Federal Highway Boca Raton, Florida 33432 September [], 2023 Ladies and Gentlemen: This letter (this “Agreement”) constitutes the agreement between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”) and Dawson James Securities, Inc. (“Dawson”) pursuant to which Dawson shall serve as the placement agen

As filed with the Securities and Exchange Commission on September 25, 2023

As filed with the Securities and Exchange Commission on September 25, 2023 Registration No.

Form of 2023 Securities Purchase Agreement (incorporated by reference to Exhibit 4.9 filed with Amendment No. 3 to the Company’s Registration on Form S-1 (File no. 333-274231))

Exhibit 4.9 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of September [], 2023, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively, the “Purchasers”). WHEREAS, subject to the terms an

Form of Placement Agent’s Warrant (incorporated by reference to Exhibit 4.5 to our Registration Statement on Form S-1/A filed on September 25, 2023 (Reg. No. 333-274231))

Exhibit 4.5 COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: September [], 2023 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, [] or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the date he

September 25, 2023

Correspondence September 25, 2023 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

Form of 2024 Placement Agent’s Warrant (incorporated by reference to Exhibit 4.4 to our Registration Statement on Form S-1 (File no. 333-277070) Amendment No. 3 filed on April 9, 2024).

Exhibit 4.4 COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: September [], 2023 CUSIP: THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, CEDE & CO. or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or af

Form of Common Warrant Agency Agreement (incorporated by reference to Exhibit 4.7 to our Registration Statement on Form S-1/A filed on September 25, 2023 (Reg. No. 333-274231))

Exhibit 4.7 WARRANT AGENCY AGREEMENT WARRANT AGENCY AGREEMENT, dated as of September [], 2023 (“Agreement”), between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and Computershare, Inc., a Delaware corporation (“Computershare”), and its affiliate Computershare Trust Company, N.A. a federally chartered trust company (collectively with Computershare, the “Warrant Agent”).

Form of Common Warrant (incorporated by reference to Exhibit 4.4 to our Registration Statement on Form S-1/A filed on September 25, 2023 (Reg. No. 333-274231))

Exhibit 4.4 COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: September [], 2023 CUSIP: THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, CEDE & CO. or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or af

Form of Prefunded Warrant (incorporated by reference to Exhibit 4.6 filed with Amendment No. 3 to the Company’s Registration on Form S-1 (File no. 333-274231))

Exhibit 4.6 PRE-FUNDED COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: September [], 2023 CUSIP: THIS PRE-FUNDED COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, CEDE & CO. or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth

Form of 2023 Prefunded Warrant Agency Agreement (incorporated by reference to Exhibit 4.8 filed with Amendment No. 3 to the Company’s Registration on Form S-1 (File no. 333-274231))

Exhibit 4.8 WARRANT AGENCY AGREEMENT WARRANT AGENCY AGREEMENT, dated as of September [], 2023 (“Agreement”), between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and Computershare, Inc., a Delaware corporation, and its wholly-owned subsidiary, Computershare Trust Company, N.A., a federally chartered trust company (the “Warrant Agent”). W I T N E S S E T H WHEREAS, pursu

Form of 2023 Common Warrant Agency Agreement (incorporated by reference to Exhibit 4.7 filed with Amendment No. 3 to the Company’s Registration on Form S-1 (File no. 333-274231))

Exhibit 4.7 WARRANT AGENCY AGREEMENT WARRANT AGENCY AGREEMENT, dated as of September [], 2023 (“Agreement”), between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and Computershare, Inc., a Delaware corporation, and its wholly-owned subsidiary, Computershare Trust Company, N.A., a federally chartered trust company (the “Warrant Agent”). W I T N E S S E T H WHEREAS, pursu

As filed with the Securities and Exchange Commission on September 18, 2023

As filed with the Securities and Exchange Commission on September 18, 2023 Registration No.

Form of 2023 Placement Agent Warrant (incorporated by reference to Exhibit 4.5 filed with Amendment No. 3 to the Company’s Registration on Form S-1 (File no. 333-274231))

Exhibit 4.5 COMMON STOCK PURCHASE WARRANT ASCENT SOLAR TECHNOLOGIES, INC. Warrant Shares: Initial Exercise Date: March [], 2024 THIS COMMON STOCK PURCHASE WARRANT (the “Warrant”) certifies that, for value received, [] or its assigns (the “Holder”) is entitled, upon the terms and subject to the limitations on exercise and the conditions hereinafter set forth, at any time on or after the date hereof

Form of Placement Agent Agreement

Exhibit 1.1 PLACEMENT AGENCY AGREEMENT Dawson James Securities, Inc. 1 North Federal Highway Boca Raton, Florida 33432 September [], 2023 Ladies and Gentlemen: This letter (this “Agreement”) constitutes the agreement between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”) and Dawson James Securities, Inc. (“Dawson”) pursuant to which Dawson shall serve as the placement agen

www.ascentsolar.com Page | 1 Filed Pursuant to Rule 433 Free Writing Prospectus dated September 15, 2023 Relating to Preliminary Prospectus dated September 13, 2023 Registration No. 333 - 274231 Explanatory Note This free writing prospectus relates t

www.ascentsolar.com Page | 1 Filed Pursuant to Rule 433 Free Writing Prospectus dated September 15, 2023 Relating to Preliminary Prospectus dated September 13, 2023 Registration No. 333 - 274231 Explanatory Note This free writing prospectus relates to the proposed public offering of securities of Ascent Solar Technologies, Inc . (the “Company”) . The securities are being registered on a Registrati

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Material Modification to Rights of Security Holders, Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 15, 2023 (September 11, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdicti

Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Company, dated September 8, 2023 (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed on September 15, 2023)

Exhibit 3.1

Certificate of Amendment to the Amended and Restated Certificate of Incorporation of the Company, dated September 8, 2023

Exhibit 3.19

As filed with the Securities and Exchange Commission on September 13, 2023

As filed with the Securities and Exchange Commission on September 13, 2023 Registration No.

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Ascent Solar Technologies, Inc.

LETTER

United States securities and exchange commission logo September 5, 2023 Jin Jo Chief Financial Officer Ascent Solar Technologies, Inc.

As filed with the Securities and Exchange Commission on August 25, 2023

As filed with the Securities and Exchange Commission on August 25, 2023 Registration No.

Filing Fee Table (incorporated by reference to Exhibit 107 to our Registration Statement on Form S-1/A filed on September 13, 2023 (Reg. No. 333-274231))

Exhibit 107 Calculation of Filing Fee Tables Form S-1 (Form Type) Ascent Solar Technologies, Inc.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Technol

Amendment to the Series 1B Preferred Stock Certificate of Designation dated July 25, 2023 (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed on July 31, 2023)

Exhibit 3.1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2023 ASCENT SOLAR TECHNO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 31, 2023 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Comm

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 Check the appropriate box: ☐ Preliminary Information Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14c-5(d)(2)) ☒ Definitive Information Statement ASCENT SOLAR TECHNOLOGIES, INC. (Nam

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 Check the appropriate box: ☒ Preliminary Information Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14c-5(d)(2)) ☐ Definitive Information Statement ASCENT SOLAR TECHNOLOGIES, INC. (Nam

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 10, 2023 ASCENT SOLAR TECHNO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): July 10, 2023 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Comm

Form of Series 1B Preferred Stock Purchase Agreement dated June 29, 2023 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on June 30, 2023)

EXHIBIT 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of June 29, 2023 between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively, the “Purchasers”). WHEREAS, subject to the terms and con

Form of Series 1B Preferred Stock Certificate of Designation (incorporated by reference to Exhibit 3.1 to our Current Report on Form 8-K filed on June 30, 2023)

EXHIBIT 3.1 ascent solar technologies, inc. CERTIFICATE OF DESIGNATION OF PREFERENCES, RIGHTS AND LIMITATIONS OF Series 1B CONVERTIBLE PREFERRED STOCK PURSUANT TO SECTION 151 OF THE delaware GENERAL CORPORATION LAW The undersigned, Paul Warley and Dave Peterson, do hereby certify that: 1. They are the President and Secretary, respectively, of Ascent Solar Technologies, Inc., a Delaware corporation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 30, 2023 (June 29, 2023) ASC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): June 30, 2023 (June 29, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of inco

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 30, 2023 (May 25, 2023) ASCEN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 30, 2023 (May 25, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 26, 2023 (May 25, 2023) ASCEN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 26, 2023 (May 25, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorp

Waiver and Amendment Agreement, dated as of May 25, 2023 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on May 26, 2023)

EXHIBIT 10.1 SECOND WAIVER AND AMENDMENT AGREEMENT This Second Waiver and Amendment Agreement (this “Agreement”) is entered into as of May 24, 2023, by and among ASCENT SOLAR TECHNOLOGIES, INC. (the “Company”) and each of the undersigned Purchasers (the “Consenting Purchasers”). Recitals WHEREAS, the Company and each of the Consenting Purchasers have entered into that certain Securities Purchase C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 23, 2023 (May 22, 2023) ASCEN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 23, 2023 (May 22, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorp

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 or ☐ TRANSITION REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Techno

Ascent Solar Announces Leadership Team Promotions to Drive Strategic Growth

Exhibit 99.1 Ascent Solar Announces Leadership Team Promotions to Drive Strategic Growth THORNTON, CO., May 11, 2023 – Ascent Solar Technologies, (Nasdaq: ASTI) (“ASTI” or the “Company”), the leading U.S. innovator in the design and manufacturing of featherweight, flexible, and durable CIGS thin-film photovoltaic (PV) solutions, today announced several leadership appointments to advance the Compan

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 (May 8, 2023) ASCENT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 11, 2023 (May 8, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorpo

CEO Employment Agreement between the Company and Paul Warley dated as of May 1, 2023

Exhibit 10.1 EMPLOYMENT AGREEMENT THIS EMPLOYMENT AGREEMENT (this “Agreement”) is made, entered into and effective as of May 1, 2023 (the “Effective Date”), by and between Ascent Solar Technologies, Inc. (the “Company”) and Paul Warley (the “Executive”). The Company and the Executive, each intending to be legally bound by the terms hereof, agree as follows: 1. Employment Term. The Company hereby e

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 8, 2023 (May 2, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorpor

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 2, 2023 (April 26, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incor

Ascent Solar Technologies Names New CEO

Exhibit 99.1 Ascent Solar Technologies Names New CEO THORNTON, CO., May 2, 2023 – Ascent Solar Technologies, (Nasdaq: ASTI) (“ASTI” or the “Company”), the leading U.S. innovator in the design and manufacture of featherweight, flexible, and durable CIGS thin-film photovoltaic (PV) solutions, announced today that the Board of Directors has terminated Jeffrey Max, ASTI’s President and Chief Executive

Ascent Solar Technologies, Inc. Announces $5M Financing Agreement with BD1 Holdings Capital commitment arrives as Ascent executes turnaround plan that includes global expansion and investments in commercializing Perovskites solar technology

Exhibit 99.1 Ascent Solar Technologies, Inc. Announces $5M Financing Agreement with BD1 Holdings Capital commitment arrives as Ascent executes turnaround plan that includes global expansion and investments in commercializing Perovskites solar technology THORNTON, CO / GLOBE NEWSWIRE / APRIL 25, 2023 – Ascent Solar Technologies, Inc. (NASDAQ: ASTI) (“ASTI” or the “Company”), the leading U.S. innova

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 25, 2023 (April 19, 2023) A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 25, 2023 (April 19, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of in

Form of Subordinated Note under Subordinated Debt Securities Purchase Agreement dated April 19, 2023

Exhibit 10.2 THIS NOTE HAS NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR UNDER THE SECURITIES LAWS OF ANY STATES IN THE UNITED STATES. THESE SECURITIES ARE SUBJECT TO RESTRICTIONS ON TRANSFERABILITY AND RESALE AND MAY NOT BE TRANSFERRED OR RESOLD EXCEPT AS PERMITTED UNDER THE ACT AND THE APPLICABLE STATE SECURITIES LAWS, PURSUANT TO REGISTRATION OR EXEMPTION THER

Subordinated Debt Securities Purchase Agreement dated April 19, 2023

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of April 19, 2023, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively, the “Purchasers”). WHEREAS, subject to the terms and c

Transition Services Agreement, dated as of April 17, 2023 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on April 21, 2023)

Exhibit 10.1 EXECUTION VERSION Transition Services Agreement This TRANSITION SERVICES AGREEMENT dated as of April 17, 2023 (this “Agreement”) is made by and between Flisom AG, Gewerbestrasse 16, 8155 Niederhasli, Switzerland, CHE-112.438.042 (“Seller”), Ascent Solar Technologies Inc., 12300 Grant Street, Suite 160, 80241 Thornton CO, USA (“Buyer”), and FL1 Holding GmbH, Am Eulenhof 14, 95326 Kulmb

Letter Agreement, dated as of April 20, 2023 (incorporated by reference to Exhibit 10.4 to our Current Report on Form 8-K filed on April 21, 2023)

Exhibit 10.4 April 20, 2023 BD Vermögensverwaltungs GmbH Ostendstr.181 90482 Nürnberg Attn: Straub & Kollegen Rechtsanwaltsgesellschaft BD 1 Investment Holding, LLC 1675 South State Street, Suite B Kent County, Delaware 19901 Attention: Johannes Kuhn FL1 Holding GmbH Ostendstr. 181 90482 Nürnberg Attn: Ralf Straub, Managing Director RE: Omnibus Side Letter Agreement Reference is made to that certa

Technology License Agreement, dated as of April 17, 2023 (incorporated by reference to Exhibit 10.3 to our Current Report on Form 8-K filed on April 21, 2023)

Exhibit 10.3 TECHNOLOGY LICENSE AGREEMENT THIS TECHNOLOGY LICENSE AGREEMENT (“Agreement”) is entered into as of April 17, 2023 (the “Execution Date”) and effective as of the Effective Date (as defined below), by and between Flisom AG, a Swiss corporation (“Flisom”) and Ascent Solar Technologies, Inc., a Delaware corporation (“ASTI”). Flisom and ASTI may be individually referred to herein as a “Par

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 21, 2023 (April 17, 2023) A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): April 21, 2023 (April 17, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of in

Sublease Agreement, dated as of April 17, 2023 (incorporated by reference to Exhibit 10.2 to our Current Report on Form 8-K filed on April 21, 2023)

Exhibit 10.2 EXECUTION VERSION Sublease Agreement dated April 17, 2023 between Flisom AG Sublessor and Ascent Solar Technologies Inc. Sublessee and Alex Michael Hadjimina Master Lessor This Sublease Agreement (this “Sublease”) is dated as of the date set forth on the front page of this Sublease and entered into between: (1) Flisom AG, Gewerbestrasse 16, 8155 Niederhasli, Switzerland, UID: CHE-112.

Asset Purchase Agreement, dated as of April 17, 2023 (incorporated by reference to Exhibit 2.1 to our Current Report on Form 8-K filed on April 21, 2023)

Exhibit 2.1 EXECUTION VERSION ASSET PURCHASE AGREEMENT dated 17 April, 2023 between Flisom AG, Gewerbestrasse 16, 8155 Niederhasli, Switzerland, CHE-112.438.042 (the “Seller”), and Ascent Solar Technologies Inc., 12300 Grant Street, Suite 160, 80241 Thornton CO, USA, (the “Buyer”), (Seller and Buyer together the “Parties”, each a “Party”) Preamble Seller is a developer and manufacturer of photovol

Common Stock Securities Purchase Agreement dated April 14, 2023 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on April 20, 2023)

Exhibit 10.1 SECURITIES PURCHASE AGREEMENT This Securities Purchase Agreement (this “Agreement”) is dated as of April 14, 2023, between Ascent Solar Technologies, Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and collectively, the “Purchasers”). WHEREAS, subject to the terms and c

Regulation FD Disclosure, Financial Statements and Exhibits, Unregistered Sales of Equity Securities

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 20, 2023 (April 14, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of in

Ascent Solar Technologies, Inc. Secures $9M Equity Financing with Lucro Investments VCC Ascent Solar receives repeat funding to fuel aggressive turnaround plan and strategy to become global contender in the solar technology solutions market

Exhibit 99.1 Ascent Solar Technologies, Inc. Secures $9M Equity Financing with Lucro Investments VCC Ascent Solar receives repeat funding to fuel aggressive turnaround plan and strategy to become global contender in the solar technology solutions market THORNTON, CO / GLOBE NEWSWIRE / APRIL 20, 2023 – Ascent Solar Technologies, Inc. (NASDAQ: ASTI) (“ASTI” or the “Company”), the leading U.S. innova

Ascent Solar Technologies, Inc. Accelerates Global Expansion Through Completed Acquisition of Swiss Thin-Film Solar Manufacturing Equipment Ascent Solar's acquisition of Flisom AG’s Zurich equipment establishes a new revenue stream, 300% more manufac

Exhibit 99.1 Ascent Solar Technologies, Inc. Accelerates Global Expansion Through Completed Acquisition of Swiss Thin-Film Solar Manufacturing Equipment Ascent Solar's acquisition of Flisom AG’s Zurich equipment establishes a new revenue stream, 300% more manufacturing capacity, and an international presence as European and Asian governments adopt legislation to increase solar energy production &

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 18, 2023 ASCENT SOLAR TECHN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 18, 2023 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Com

POWER OF ATTORNEY

Exhibit 99.4 POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints James H. Carroll, individually, as the undersigned’s true and lawful attorney-in-fact to: (1) execute for and on behalf of the undersigned, in the undersigned’s capacity as a beneficial owner of securities of Ascent Solar Technologies, Inc. (the “Company”), (i) all reports on Forms 3, 4

US0436356069 / ASCENT SOLAR TECHNOLOGIES INC / ARION AGROPHOTOVOLTAIC PRIVATE LTD - SCHEDULE 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934   Ascent Solar Technologies, Inc. (Name of Issuer) Common Stock, Par Value $0.0001 (Title of Class of Securities) 043635606 (CUSIP Number) Arion Agrophotovoltaic Private Limited 8, Temasek Boulevard, Suntec Tower 3 #29-03A, Singapore 038988. (Name, Address and Telephone Nu

POWER OF ATTORNEY

Exhibit 99.3 POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints James H. Carroll, individually, as the undersigned’s true and lawful attorney-in-fact to: (1) execute for and on behalf of the undersigned, in the undersigned’s capacity as a beneficial owner of securities of Ascent Solar Technologies, Inc. (the “Company”), (i) all reports on Forms 3, 4

POWER OF ATTORNEY

Exhibit 99.2 POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints James H. Carroll, individually, as the undersigned’s true and lawful attorney-in-fact to: (1) execute for and on behalf of the undersigned, in the undersigned’s capacity as a beneficial owner of securities of Ascent Solar Technologies, Inc. (the “Company”), (i) all reports on Forms 3, 4

Exhibit 99.1 Joint Filing Agreement among the Reporting Persons

Exhibit 99.1 JOINT FILING AGREEMENT In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, each of the undersigned hereby agrees to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common stock, $0.0001 par value, of Ascent Solar Technologies, Inc. Each of the undersigned acknowledges that

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 13, 2023 (April 12, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of in

Amendment to Waiver and Amendment Agreement (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on April 13, 2023)

Exhibit 10.1 Execution Version AMENDMENT TO WAIVER AND AMENDMENT AGREEMENT This Amendment to Waiver and Amendment Agreement (this “Agreement”) is entered into as of April 12, 2023, by and among ASCENT SOLAR TECHNOLOGIES, INC. (the “Company”) and each of the undersigned Purchasers (the “Consenting Purchasers”). Recitals WHEREAS, on March 29, 2023, the Company and each of the Consenting Purchasers e

US0436356069 / ASCENT SOLAR TECHNOLOGIES INC / BD1 Investment Holding, LLC - SCHEDULE 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A (Amendment No. 7) Under the Securities Exchange Act of 1934   Ascent Solar Technologies, Inc. (Name of Issuer) Common Stock, Par Value $0.0001 (Title of Class of Securities) 043635606 (CUSIP Number) BD 1 Investment Holding, LLC 1675 South State Street, Suite B Dover, DE 19901 310-266-3528 (Name, Address and Tele

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 4, 2023 (April 3, 2023) ASC

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): April 4, 2023 (April 3, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of inco

Waiver and Amendment Agreement, dated as of March 29, 2023 (incorporated by reference to Exhibit 10.1 to our Current Report on Form 8-K filed on March 29, 2023)

Exhibit 10.1 Execution Version WAIVER AND AMENDMENT AGREEMENT This Waiver and Amendment Agreement (this “Agreement”) is entered into as of March 29, 2023, by and among ASCENT SOLAR TECHNOLOGIES, INC. (the “Company”) and each of the undersigned Purchasers (the “Consenting Purchasers”). Recitals WHEREAS, the Company and each of the Consenting Purchasers have entered into that certain Securities Purc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 29, 2023 ASCENT SOLAR TECHN

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 29, 2023 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Com

Exhibit 99.5 Power of Attorney for BD1 Investment Holding LLC(3)

Exhibit 99.5 POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints James H. Carroll, individually, as the undersigned’s true and lawful attorney-in-fact to: (1) execute for and on behalf of the undersigned, in the undersigned’s capacity as a beneficial owner of securities of Ascent Solar Technologies, Inc. (the “Company”), (i) all reports on Forms 3, 4

Exhibit 99.4 Power of Attorney for Ute Kuhn(3)

EX-24.2 3 ex99x4.htm POWER OF ATTORNEY Exhibit 99.4 POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints James H. Carroll, individually, as the undersigned’s true and lawful attorney-in-fact to: (1) execute for and on behalf of the undersigned, in the undersigned’s capacity as a beneficial owner of securities of Ascent Solar Technologies, Inc. (the “Co

Exhibit 99.3 Power of Attorney for Johannes Kuhn(3)

Exhibit 99.3 POWER OF ATTORNEY Know all by these presents, that the undersigned hereby constitutes and appoints James H. Carroll, individually, as the undersigned’s true and lawful attorney-in-fact to: (1) execute for and on behalf of the undersigned, in the undersigned’s capacity as a beneficial owner of securities of Ascent Solar Technologies, Inc. (the “Company”), (i) all reports on Forms 3, 4

US0436356069 / ASCENT SOLAR TECHNOLOGIES INC / BD1 Investment Holding, LLC - SCHEDULE 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A (Amendment No. 6) Under the Securities Exchange Act of 1934   Ascent Solar Technologies, Inc. (Name of Issuer) Common Stock, Par Value $0.0001 (Title of Class of Securities) 043635606 (CUSIP Number) BD 1 Investment Holding, LLC 1675 South State Street, Suite B Dover, DE 19901 310-266-3528 (Name, Address and Tele

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 28, 2023 (March 23, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of in

US0436356069 / ASCENT SOLAR TECHNOLOGIES INC / Lucro Investments VCC - ESG Opportunities Fund - LUCRO INVESTMENTS VCC - ESG OPPORTUNITIES FUND Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 2)* Ascent Solar Technologies, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 043635606 (CUSIP Number) March 14, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designa

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 23, 2023 (March 18, 2023) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of in

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 or ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the Transition Period from to Commission File No. 001-32919 Ascent Solar Techn

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 7, 2023 ASCENT SOLAR TECHNO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): March 7, 2023 ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction of incorporation) (Comm

Ascent Solar Technologies, Inc. Announces First Step of Strategic Plan; Executes Term Sheet for Acquisition of Assets from Leading European Thin-Film Solar Manufacturer Ascent Solar’s turnaround plan starts with acquiring new revenue, manufacturing c

Exhibit 99.2 Ascent Solar Technologies, Inc. Announces First Step of Strategic Plan; Executes Term Sheet for Acquisition of Assets from Leading European Thin-Film Solar Manufacturer Ascent Solar’s turnaround plan starts with acquiring new revenue, manufacturing capabilities and intellectual property to fuel global expansion THORNTON, CO & ZURICH, CH / GLOBE NEWSWIRE / MARCH 7, 2023 – Ascent Solar

Proposed Asset Acquisition Term Sheet March 7, 2023

Exhibit 99.1 Execution Version Proposed Asset Acquisition Term Sheet March 7, 2023 This term sheet (this “Term Sheet”) summarizes the terms and conditions of the proposed transaction between Ascent solar technologies, Inc., a Delaware corporation (“Acquiror”), FL1 Holding GmbH, a Germany company with limited liability registered with the commercial register of the local court of Nuremberg, Germany

US0436356069 / ASCENT SOLAR TECHNOLOGIES INC / Lucro Investments VCC - ESG Opportunities Fund - FLEUR CAPITAL SCHEDULE 13G/A Passive Investment

SC 13G/A 1 fleursch13g.htm FLEUR CAPITAL SCHEDULE 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* Ascent Solar Technologies, Inc. (Name of Issuer) Common Stock, par value $0.0001 per share (Title of Class of Securities) 043635606 (CUSIP Number) December 31, 2022 (Date of Event which Requires Fil

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241

Ascent Solar Technologies, Inc. 12300 Grant Street Thornton, CO 80241 February 7, 2023 VIA EDGAR Gregory Herbers Division of Corporation Finance Office of Manufacturing U.S. Securities & Exchange Commission 100 F Street, NE Washington, D.C. 20549 RE: Ascent Solar Technologies, Inc. (the “Company”) Registration Statement on Form S-1 (File No. 333-262482) (the “Registration Statement”) Dear Mr. Herb

US0436356069 / ASCENT SOLAR TECHNOLOGIES INC / BD1 Investment Holding, LLC - SCHEDULE 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D/A (Amendment No. 5) Under the Securities Exchange Act of 1934   Ascent Solar Technologies, Inc. (Name of Issuer) Common Stock, Par Value $0.0001 (Title of Class of Securities) 043635606 (CUSIP Number) BD 1 Investment Holding, LLC 1675 South State Street, Suite B Dover, DE 19901 310-266-3528 (Name, Address and Tele

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 Check the appropriate box: ? Preliminary Information Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14c-5(d)(2) ? Definitive Information Statement Ascent Solar Technologies, Inc. (Name of Registra

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 29, 2022 (December 23, 2

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): December 29, 2022 (December 23, 2022) ASCENT SOLAR TECHNOLOGIES, INC. (Exact name of registrant as specified in its charter) Delaware 001-32919 20-3672603 (State or other jurisdiction

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 Check the appropriate box: ☒ Preliminary Information Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14c-5(d)(2)) ☐ Definitive Information Statement Ascent Solar Technologies, Inc. (Name of Registr