Plug Power Inc. (NASDAQ:PLUG) stock rose in Tuesday’s premarket trading as the company disclosed updates to its regulatory filings and highlighted continued operational progress. On September 22, Plug filed a prospectus supplement tied to its May 2025 registration statement with the U.S. Securities and Exchange Commission. The document covers the resale of common stock related to warrants issued in March 2025. Also Read: Stock Market Today: Nasdaq Futures Rise, S&P 500 Slips Amid Mixed Trade—Kenvue, Micro ...