Stock Trading History of Zavis Michael Wm

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 Zavis Michael Wm since year 2005. The trader's CIK number is 1238635. At the time of this reporting, Zavis Michael Wm is the of Zenith National Insurance Corp (stock ticker symbol ZNT).

Stock purchases, sales, and option exercises reported by insider *Zavis Michael Wm* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-02-06	ZNT	Zenith National Insurance Corp	Purchase	1,500	35.05	52,574
2008-02-05	ZNT	Zenith National Insurance Corp	Purchase	1,500	35.95	53,925
2007-08-23	ZNT	Zenith National Insurance Corp	Purchase	2,500	43.00	107,500
2007-08-20	ZNT	Zenith National Insurance Corp	Purchase	500	42.75	21,375
2007-08-17	ZNT	Zenith National Insurance Corp	Purchase	1,000	42.62	42,625
2007-08-15	ZNT	Zenith National Insurance Corp	Purchase	1,000	41.11	41,110

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 Zavis Michael Wm ( of Zenith National Insurance Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.