Stock Trading History of Herrin Robert L

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 Herrin Robert L since year 2005. The trader's CIK number is 1329586. At the time of this reporting, Herrin Robert L is the Controller of Globalsantafe Corp (stock ticker symbol GSF).

Stock purchases, sales, and option exercises reported by *Herrin Robert L* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-05-17	GSF	Globalsantafe Corp	Option Exercise	6,625	35.24	233,465
2007-05-18	GSF	Globalsantafe Corp	Option Exercise	16,426	24.88	408,596
2007-05-17	GSF	Globalsantafe Corp	Sale	7,180	66.61	478,268
2007-05-18	GSF	Globalsantafe Corp	Sale	16,426	68.50	1,125,181
2007-05-15	GSF	Globalsantafe Corp	Option Exercise	3,960	24.73	97,930
2007-05-15	GSF	Globalsantafe Corp	Sale	3,960	66.00	261,360
2006-12-13	GSF	Globalsantafe Corp	Sale	5,100	64.34	328,121
2006-12-13	GSF	Globalsantafe Corp	Option Exercise	5,100	33.00	168,300
2006-12-12	GSF	Globalsantafe Corp	Sale	4,254	63.28	269,171
2006-12-11	GSF	Globalsantafe Corp	Sale	4,000	62.77	251,080
2006-04-19	GSF	Globalsantafe Corp	Option Exercise	12,900	27.44	353,911
2006-04-19	GSF	Globalsantafe Corp	Sale	12,900	64.50	832,050
2006-04-11	GSF	Globalsantafe Corp	Option Exercise	1,164	29.85	34,745
2006-04-11	GSF	Globalsantafe Corp	Sale	1,164	64.50	75,078
2006-03-28	GSF	Globalsantafe Corp	Sale	7,352	62.00	455,824
2006-03-28	GSF	Globalsantafe Corp	Option Exercise	6,700	37.07	248,369
2006-03-13	GSF	Globalsantafe Corp	Sale	1,175	56.25	66,093
2005-12-08	GSF	Globalsantafe Corp	Sale	1,000	49.50	49,500
2005-12-06	GSF	Globalsantafe Corp	Sale	1,000	47.50	47,500

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 Herrin Robert L (Controller of Globalsantafe Corp at the time of this reporting) see the Securities and Exchange Commission (SEC) website.