X0101 4 2003-07-01 1 0001134224 BRUKER AXS INC BAXS 0001218921 DROSS DANIEL 1 0 0 0 Stock Option (right to buy) 2.10 2003-07-01 4 D 0 2500 2.10 D 2003-05-07 2012-05-07 Common Stock 2500 0 D Stock Option (right to buy) 2.26 2003-07-01 4 D 0 2500 2.26 D 2004-05-07 2013-05-07 Common Stock 2500 0 D In connection with the merger of Bruker AXS Inc. into Bruker Daltonics Inc, now known ask Bruker BioSciences Corporation (the "Merger"), filer's option to purchase 2,500 shares of Bruker AXS Inc. common stock was converted into an option to purchase 1,575 shares of Bruker BioSciences Corporation common stock with the same vesting schedule at 3.33 per share. In connection with the Merger, filer's option to purchase 2,500 shares of Bruker AXS Inc. common stock was converted into an option to purchase 1,575 shares of Bruker BioSciences Corporation common stock with the same vesting schedule at 3.59 per share. Daniel S. Dross 2003-07-03