X0202 4 2005-12-02 0 0000812121 CRITICARE SYSTEMS INC /DE/ CMD 0001261294 BARNES JEFFREY T CRITICARE SYSTEMS, INC. 20925 CROSSROADS CRICLE, SUITE 100 WAUKESHA WI 53186 1 0 0 0 Common Stock, par value $.04 per share 2005-12-02 4 M 0 20000 1.875 A 40000 D Common Stock, par value $.04 per share 2005-12-02 4 S 0 15300 4.65 D 24700 D Common Stock, par value $.04 per share 2005-12-02 4 S 0 100 4.66 D 24600 D Common Stock, par value $.04 per share 2005-12-02 4 S 0 1100 4.68 D 23500 D Common Stock, par value $.04 per share 2005-12-02 4 S 0 3500 4.7 D 20000 D Common Stock, par value $.04 per share 1750073 I Note Common Stock Option 1.875 2005-12-02 4 M 0 20000 0 D 2001-12-20 2005-12-20 Common Stock 20000 0 D The reporting person also owns indirectly 1,402,322 shares held of record by Oxford Bioscience Partners III L.P., 131,256 shares held of record by Oxford Bioscience Partners (Adjunct) III L.P., 199,867 shares held of record by Oxford Bioscience Partners (Bermuda) III Limited Partnership, and 16,628 shares held of record by mRNA Fund L.P. The reporting person is a partner of Oxford Bioscience Partners and may be deemed to share beneficial ownership of these shares. The reporting person disclaims such beneficial ownership except to the extent of his pecuniary interst in such shares. The common stock option vested pro rata over a four-year period on each of December 20, 2001, December 20, 2002, December 20, 2003 and December 20, 2004. Benjamin Lombard, Attorney-in-fact 2005-12-09