X0201 42003-11-200 0001103345 BEACON POWER CORP BCON 0001090098 PERSEUS CAPITAL LLC 2099 PENNSYLVANIA AVENUE SUITE 900 WASHINGTON DC 20006 0010Common Stock2003-11-204S01246000.00001.4296D10256351.0000DCommon Stock2003-11-214S025000.00001.3850D10231351.0000DPERSEUS CAPITAL, L.L.C. By: Rodd Macklin Chief Financial Officer and Treasurer2003-11-24