Material Event (Form 8-K)

Item 8.01 Other Events.

On December 3, 2025, the Board of Directors (the "Board") of Plug Power Inc. (the "Company") determined to change the previously announced record date and date of the Company's special meeting of stockholders.

As previously disclosed, the Company had scheduled a special meeting of stockholders to be held on January 15, 2026 with a record date for determining stockholders entitled to vote at the special meeting of December 4, 2025. The Board has approved a revised record date of December 12, 2025 and a revised special meeting date of January 29, 2026. The Board determined to change the record date and special meeting date to provide stockholders additional time to recall shares that may be on loan through their brokers and to ensure maximum stockholder participation in the voting process.

The purpose of the special meeting remains unchanged. Only stockholders of record as of the close of business on December 12, 2025 will be entitled to receive notice of, and to vote at, the special meeting.

The Company intends to file a definitive proxy statement with the Securities and Exchange Commission reflecting the new record date and special meeting date. Stockholders are encouraged to read the definitive proxy statement and any other relevant materials when they become available because they will contain important information about the matters to be considered at the special meeting.