X0609 4 2026-09-18 0 0001093691 PLUG POWER INC PLUG 0002085249 Haycraft Benjamin false C/O PLUG POWER INC. 125 VISTA BOULEVARD SLINGERLANDS NY 12159 0 1 0 0 CSO & GM EMEA 1 Common Stock 2026-09-18 4 S 0 200000 2.1415 D 101249 D These sales were effected by the Reporting Person pursuant to a Rule 10b5-1 trading plan adopted on June 11, 2026. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.135 to $2.148, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. /s/ Gerard L. Conway, Jr., Attorney-in-Fact 2026-09-22