Stock Trading History of Winston Charles D

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 Winston Charles D since year 2005. The trader's CIK number is 1250467. At the time of this reporting, Winston Charles D is the President and CEO of Gsi Group Inc (stock ticker symbol GSIG).

Stock purchases, sales, and option exercises reported by *Winston Charles D* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2006-03-16	GSIG	Gsi Group Inc	Sale	44,237	12.94	572,426
2006-03-15	GSIG	Gsi Group Inc	Sale	39,380	12.95	509,971
2006-01-31	GSIG	Gsi Group Inc	Option Exercise	88,447	8.35	738,532
2006-01-31	GSIG	Gsi Group Inc	Sale	88,477	13.00	1,150,201
2006-01-30	GSIG	Gsi Group Inc	Option Exercise	31,605	8.35	263,901
2006-01-30	GSIG	Gsi Group Inc	Sale	31,605	13.00	410,865
2006-01-27	GSIG	Gsi Group Inc	Option Exercise	29,948	8.35	250,065
2006-01-27	GSIG	Gsi Group Inc	Sale	29,948	13.00	389,324
2006-01-09	GSIG	Gsi Group Inc	Sale	94,290	12.00	1,131,857
2006-01-09	GSIG	Gsi Group Inc	Option Exercise	94,290	4.45	419,967

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 Winston Charles D (President and CEO of Gsi Group Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.