On February 5, 2026, Plug Power Inc. (the "Company") reconvened its special meeting of stockholders (the "Special Meeting") at 10:00 a.m., Eastern Standard Time, with respect to the following proposals:

Based on the preliminary tabulation of votes received as of the reconvened meeting date, approximately 39.63% and 49.40% of the outstanding shares of the Company's common stock voted in favor of Proposal 1 and Proposal 2, respectively. As the Company did not receive sufficient votes to approve Proposal 1 or Proposal 2, the Company further adjourned the Special Meeting to permit additional time to solicit proxies.

The Special Meeting is scheduled to reconvene at 4:00 p.m., Eastern Standard Time, on Tuesday, February 17, 2026. No other matters are expected to be presented for consideration at the adjourned Special Meeting other than the vote on Proposals 1 and 2.

The Company's stockholders of record as of December 12, 2025 (the "Record Date") are entitled to attend the adjourned Special Meeting and vote their shares using the same process in place for the originally scheduled Special Meeting, the details of which are set forth in the Company's definitive proxy statement filed with the Securities and Exchange Commission (the "SEC") on December 12, 2025.

Proxies previously submitted will continue to be valid for the adjourned Special Meeting unless properly revoked or changed in accordance with the procedures described in the definitive proxy statement.

The Company encourages all stockholders as of the Record Date who have not yet voted to do so as soon as possible but no later than February 16, 2026 at 11:59 p.m., Eastern Standard Time.

Important Additional Information and Where to Find It
The Company has filed a definitive proxy statement and other relevant documents with the SEC in connection with the Special Meeting. INVESTORS AND SECURITY HOLDERS ARE URGED TO READ THE DEFINITIVE PROXY STATEMENT AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY because they contain important information about the matters to be voted on at the Special Meeting. Stockholders may obtain copies of these documents free of charge at the SEC's website at www.sec.govor on the Company's website at www.plugpower.com.

Participants in the Solicitation
The Company and its directors and executive officers may be deemed to be participants in the solicitation of proxies from the Company's stockholders in connection with the Special Meeting. Information about the Company's directors and executive officers is outlined in the definitive proxy statement for the 2025 Annual Meeting of Stockholders, which was filed with the SEC on June 9, 2025, and information about their ownership of the Company's stock is outlined in the definitive proxy statement for the Special Meeting filed with the SEC on December 12, 2025.