Plug Power Inc. Watch

from 8-K 6 pages Plug Power Inc. (The “Company”) Is Pleased to Offer to You the Opportunity to Amend and Subsequently Exercise for Cash All of the Issued and Outstanding Warrants to Purchase 185,430,464 Shares (The “Warrant Shares”) of Common Stock of the Company, Par Value $0.01 Per Share (The “Common Stock”), Issued to You on March 20, 2025 (Other Than Pre-Funded Warrants Issued to You on Such Date) (The “Existing Warrants”), as Set Forth on the Signature Page Hereto and Currently Held by You (The “Holder”). the Issuance and Sale of the Existing Warrants Was Registered Pursuant to the Registration Statement on Form S-3 (File No. 333-265488) (The “Previous Registration Statement”), and the Resale of the Existing Warrants Was Registered Pursuant to a Resale Prospectus Supplement (The “Prospectus Supplement”) to a New Registration Statement on Form S-3 (File No. 333-287577) (The “Current Registration Statement). the Current Registration Statement Is Currently Effective and the Prospectus Supplement Is Currently Available for the Sale of the Warrant Shares Upon Exercise of the Existing Warrants. Capitalized Terms Not Otherwise Defined Herein Shall Have the Meanings Set Forth in the New Warrants. Amendment to Existing Warrants Upon Execution of This Agreement, the Existing Warrants Will Hereby Be Amended to Amend and Restate Section 6 as Follows

from 8-K 5 pages Amendment No. 4 to at Market Issuance Sales Agreement

from 8-K 4 pages Amendment No. 3 to at Market Issuance Sales Agreement

from 8-K 35 pages Plug Power Inc. 46,500,000 Shares of Common Stock, Par Value $0.01 Per Share Warrants to Purchase 185,430,464 Shares of Common Stock and Pre-Funded Warrants to Purchase 138,930,464 Shares of Common Stock Underwriting Agreement

from 8-K 4 pages Amendment No. 2 to at Market Issuance Sales Agreement

from 8-K 34 pages 78,740,157 Shares Plug Power Inc. Common Stock, Par Value $0.01 Per Share Underwriting Agreement

from 8-K 4 pages Amendment No. 1 to at Market Issuance Sales Agreement

from 8-K 51 pages Plug Power Inc. Common Stock (Par Value $0.01 Per Share) at Market Issuance Sales Agreement

from 8-K 33 pages 28,000,000 Shares Plug Power Inc. Common Stock, Par Value $0.01 Per Share Underwriting Agreement

from 8-K 33 pages 38,000,000 Shares Plug Power Inc. Common Stock, Par Value $0.01 Per Share Underwriting Agreement

from 8-K 33 pages 30,675,000 Shares Plug Power Inc. Common Stock, Par Value $0.01 Per Share Underwriting Agreement

from 8-K 42 pages Plug Power Inc. Common Stock (Par Value $0.01 Per Share) at Market Issuance Sales Agreement

from 8-K 33 pages 40,000,000 Shares Plug Power Inc. Common Stock, Par Value $0.01 Per Share Underwriting Agreement

from 8-K 24 pages 18,500 Shares of Series D Convertible Preferred Stock and Warrants to Purchase 7,381,500 Shares of Common Stock Plug Power Inc. Series D Convertible Preferred Stock (Par Value $0.01 Per Share) Common Stock (Par Value $0.01 Per Share) Underwriting Agreement

from 8-K 26 pages 10,400,000 Shares of Common Stock and Warrants to Purchase 3,120,000 Shares of Common Stock Plug Power Inc. Common Stock (Par Value $0.01 Per Share) Underwriting Agreement

from 8-K 24 pages 22,600,000 Shares Plug Power Inc. Common Stock (Par Value $0.01 Per Share) Underwriting Agreement

from 8-K 36 pages Plug Power Inc. 3,902,440 Shares of Common Stock Underwriting Agreement

from 8-K 40 pages Plug Power Inc. 10,000,000 Shares of Common Stock and Warrants to Purchase 4,000,000 Shares of Common Stock Underwriting Agreement

from 8-K 44 pages 18,600,000 Shares Plug Power Inc. Common Stock Underwriting Agreement

from 8-K 37 pages Plug Power Inc. 18,910,000 Shares of Common Stock and Warrants to Purchase 18,910,000 Shares of Common Stock Underwriting Agreement