Stock Trading History of Ralston David

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 Ralston David since year 2005. The trader's CIK number is 1330303. At the time of this reporting, Ralston David is the Chairman - Bank of Arizona of Bok Financial Corp Et Al . (stock ticker symbol BOKF). See this page for all insider trading activities at Bok Financial Corp Et Al .

Stock purchases, sales, and option exercises reported by insider *Ralston David* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2008-04-17	BOKF	Bok Financial Corp Et Al	Option Exercise	2,877	28.41	81,723
2008-01-23	BOKF	Bok Financial Corp Et Al	Option Exercise	450	46.18	20,781
2007-12-03	BOKF	Bok Financial Corp Et Al	Option Exercise	497	47.99	23,851
2007-11-30	BOKF	Bok Financial Corp Et Al	Option Exercise	633	44.00	27,852
2007-08-21	BOKF	Bok Financial Corp Et Al	Sale	500	52.00	26,000
2007-07-06	BOKF	Bok Financial Corp Et Al	Option Exercise	3,261	23.95	78,110
2006-12-26	BOKF	Bok Financial Corp Et Al	Option Exercise	450	49.00	22,050
2006-12-06	BOKF	Bok Financial Corp Et Al	Option Exercise	970	49.09	47,617
2006-11-29	BOKF	Bok Financial Corp Et Al	Option Exercise	633	45.43	28,757
2006-10-19	BOKF	Bok Financial Corp Et Al	Option Exercise	1,312	25.50	33,460
2006-08-01	BOKF	Bok Financial Corp Et Al	Option Exercise	2,305	15.78	36,367
2006-04-03	BOKF	Bok Financial Corp Et Al	Sale	400	47.55	19,020
2006-03-21	BOKF	Bok Financial Corp Et Al	Sale	3,000	47.00	141,000
2006-01-25	BOKF	Bok Financial Corp Et Al	Option Exercise	450	37.43	16,843
2006-01-10	BOKF	Bok Financial Corp Et Al	Option Exercise	496	37.65	18,674

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 Ralston David (Chairman - Bank of Arizona of Bok Financial Corp Et Al at the time of this reporting) see the Securities and Exchange Commission (SEC) website.