X0202 4 2007-04-02 0 0001038133 HESKA CORP HSKA 0001183764 SASEN JOHN F C/O PSS/WORLD MEDICAL, INC. 4345 SOUTHPOINT BOULEVARD JACKSONVILLE FL 32216 1 0 0 0 Common Stock 2007-04-02 4 M 0 595 1.68 A 5571 D Common Stock 2007-04-02 4 M 0 100 1.63 A 5671 D Common Stock 2007-04-02 4 M 0 1250 1.6 A 6921 D Common Stock 2007-04-02 4 M 0 1225 1.5 A 8146 D Non-Qualified Stock Option (right to buy) 1.5 2007-04-02 4 M 0 1225 0 D 2004-05-29 2013-05-29 Common Stock 1225 40775 D Non-Qualified Stock Option (right to buy) 1.6 2007-04-02 4 M 0 1250 0 D 2003-09-02 2013-09-02 Common Stock 1250 0 D Non-Qualified Stock Option (right to buy) 1.63 2007-04-02 4 M 0 100 0 D 2000-11-01 2010-11-01 Common Stock 100 0 D Non-Qualified Stock Option (right to buy) 1.68 2007-04-02 4 M 0 595 0 D 2004-05-17 2014-05-17 Common Stock 595 0 D This option is exercisable on the date of grant, but the underlying shares are subject to repurchase by the Company until the option vests in full on May 29, 2004. Option granted is immediately exercisable. By: Jason A. Napolitano For: John Sasen, Sr. 2007-04-04