X0303 4/A 2010-02-08 2010-02-19 0 0001093691 PLUG POWER INC PLUG 0001474050 Hansen Erik J 968 ALBANY SHAKER ROAD LATHAM NY 12110 0 1 0 0 VP & GM, Motive Power Division Plug Power Common Stock 2010-02-08 4 F 0 25626 0.54 D 44633 D This Amendment is being filed to correct the number of shares disposed of by the reporting person as well as to more accurately describe in this footnote the transaction by which the shares were disposed. The number of shares provided in Column 4 represent the shares withheld from officers in total value equal to the amount necessary to fund the payment of taxes due upon the receipt of restricted stock grant award. The Company pays this tax amount in cash and shares representing this amount are either retained in or deposited in the Company's treasury. /s/ Gerard L. Conway, Jr., Attorney in Fact 2010-03-26