Purchase
KOPPLER DOIT II director director
Common Stock 15,000 N/A N/A Purchase
PATZIG ROBERT director director
Common Stock 15,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 50,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 10,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 15,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 600 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 39,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 250,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 150,000 N/A N/A Sale
DUMAN GREGORY J director director
Common Stock 25,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 50,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 50,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 25,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 25,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 25,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 70,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 50,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 20,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 21,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 78,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 25,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 50,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 30,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 50,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 50,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Purchase
KOPP LEROY C 10 percent owner 10 percent owner
Common Stock 40,000 N/A N/A Sale
BECKER STEVEN R 10 percent owner 10 percent owner
Common Stock, par value $0.01 per share 75,000 N/A N/A