Stock Trading History of North Chris 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 North Chris D since year 2005. The trader's CIK number is 1284242. At the time of this reporting, North Chris D is the Chief Financial Officer of Hydril Co (stock ticker symbol HYDL).

Stock purchases, sales, and option exercises reported by *North Chris D* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-05-03	HYDL	Hydril Co	Sale	2,400	96.94	232,656
2007-05-03	HYDL	Hydril Co	Option Exercise	2,400	19.28	46,260
2006-08-02	HYDL	Hydril Co	Sale	12,780	72.22	922,971
2006-08-02	HYDL	Hydril Co	Option Exercise	12,780	26.82	342,785
2006-07-25	HYDL	Hydril Co	Option Exercise	450	17.00	7,650
2006-06-01	HYDL	Hydril Co	Option Exercise	1,080	.00	0
2006-05-05	HYDL	Hydril Co	Sale	750	84.48	63,360
2006-05-05	HYDL	Hydril Co	Option Exercise	750	17.00	12,750

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 North Chris D (Chief Financial Officer of Hydril Co at the time of this reporting) see the Securities and Exchange Commission (SEC) website.