Stock Trading History of Grieve Robert B

The following table details the trading activities (stock purchases, stock sales, and stock option exercises) reported to the Securities and Exchange Commission (SEC) by insider Grieve Robert B since year 2005. The trader's CIK number is 1204126. At the time of this reporting, Grieve Robert B is the Chief Executive Officer of Heska Corp (stock ticker symbol HSKA).

Stock purchases, sales, and option exercises reported by *Grieve Robert B* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-07-31	HSKA	Heska Corp	Purchase	2,000	1.89	3,780
2006-11-28	HSKA	Heska Corp	Purchase	1,000	1.62	1,620
2006-08-28	HSKA	Heska Corp	Purchase	1,000	1.55	1,550
2006-08-17	HSKA	Heska Corp	Purchase	1,000	1.41	1,410
2006-08-16	HSKA	Heska Corp	Purchase	1,000	1.41	1,410
2005-11-04	HSKA	Heska Corp	Sale	118,120	1.30	153,556

Insider trading activities including stock purchases, stock sales, and option exercises listed in the above table cannot be completely guaranteed as to their accuracy. For more information regarding the trades made by Grieve Robert B (Chief Executive Officer of Heska Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.