Stock Trading History of Whiting Douglas

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 Whiting Douglas since year 2005. The trader's CIK number is 1247663. At the time of this reporting, Whiting Douglas is the Chief Scientist of Hi/fn Inc (stock ticker symbol HIFN).

Stock purchases, sales, and option exercises reported by *Whiting Douglas* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2006-11-07	HIFN	Hi/fn Inc	Sale	2,500	5.00	12,502
2006-08-01	HIFN	Hi/fn Inc	Sale	2,500	5.14	12,846
2006-05-05	HIFN	Hi/fn Inc	Sale	2,600	6.40	16,632
2006-02-02	HIFN	Hi/fn Inc	Sale	2,600	7.32	19,026
2005-11-04	HIFN	Hi/fn Inc	Sale	2,600	5.60	14,549
2005-08-04	HIFN	Hi/fn Inc	Sale	3,400	6.64	22,576
2005-05-10	HIFN	Hi/fn Inc	Sale	3,500	5.57	19,491

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 Whiting Douglas (Chief Scientist of Hi/fn Inc at the time of this reporting) see the Securities and Exchange Commission (SEC) website.