Stock Trading History of Collett Lawrence A

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 Collett Lawrence A since year 2005. The trader's CIK number is 1220389. At the time of this reporting, Collett Lawrence A is the CEO, Chairman of Cass Information Systems Inc (stock ticker symbol CASS).

Stock purchases, sales, and option exercises reported by *Collett Lawrence A* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-01-09	CASS	Cass Information Systems Inc	Option Exercise	23,565	11.22	264,517
2007-11-28	CASS	Cass Information Systems Inc	Sale	5,528	37.00	204,536
2007-11-26	CASS	Cass Information Systems Inc	Sale	244	37.00	9,028
2007-11-21	CASS	Cass Information Systems Inc	Sale	1,046	37.00	38,702
2007-11-23	CASS	Cass Information Systems Inc	Sale	970	37.00	35,890
2007-11-19	CASS	Cass Information Systems Inc	Sale	100	37.00	3,700
2007-11-20	CASS	Cass Information Systems Inc	Sale	174	37.00	6,438
2007-10-26	CASS	Cass Information Systems Inc	Sale	549	37.00	20,313
2007-10-29	CASS	Cass Information Systems Inc	Sale	389	37.00	14,393
2007-08-22	CASS	Cass Information Systems Inc	Sale	1,000	36.78	36,780

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 Collett Lawrence A (CEO, Chairman of Cass Information Systems Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.