Stock Trading History of Severson Robert J

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 Severson Robert J since year 2005. The trader's CIK number is 1347019. At the time of this reporting, Severson Robert J is the Sr. VP, Corporate Technology of Ceridian Corp /de/ (stock ticker symbol CEN).

Stock purchases, sales, and option exercises reported by *Severson Robert J* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2006-12-18	CEN	Ceridian Corp /de/	Sale	40,000	26.41	1,056,266
2006-12-18	CEN	Ceridian Corp /de/	Option Exercise	40,000	18.61	744,400
2006-08-09	CEN	Ceridian Corp /de/	Sale	2,121	23.50	49,843
2006-08-09	CEN	Ceridian Corp /de/	Option Exercise	2,121	18.61	39,471
2006-08-07	CEN	Ceridian Corp /de/	Sale	10,000	23.55	235,500
2006-08-07	CEN	Ceridian Corp /de/	Option Exercise	10,000	18.61	186,100
2006-04-12	CEN	Ceridian Corp /de/	Sale	2	24.92	49

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 Severson Robert J (Sr. VP, Corporate Technology of Ceridian Corp /de/ at the time of this reporting) see the Securities and Exchange Commission (SEC) website.