X0201 4 2003-08-04 0 0001093691 PLUG POWER INC PLUG 0000064463 MECHANICAL TECHNOLOGY INC 431 NEW KARNER ROAD BUILDING #4 ALBANY NY 12205 0 0 1 0 Plug Power Inc. - Common Stock 2003-08-04 4 S 0 5000 4.26 D 6901913 D Plug Power Inc. - Common Stock 2003-08-05 4 S 0 2500 4.26 D 6899413 D Plug Power Inc. - Common Stock 2003-08-06 4 S 0 5000 4.13 D 6894413 D Plug Power Inc. - Common Stock 2003-08-07 4 S 0 5000 4.05 D 6889413 D Plug Power Inc. - Common Stock 2003-08-08 4 S 0 5000 4 D 6884413 D Mechanical Technology Inc. 2003-08-11