Stock Trading History of Hallock Richard W

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 Hallock Richard W since year 2005. The trader's CIK number is 1026546. At the time of this reporting, Hallock Richard W is the Executive VP - Human Resources of Occidental Petroleum Corp /de/ (stock ticker symbol OXY).

Stock purchases, sales, and option exercises reported by *Hallock Richard W* since 2005.
Trade Date	Symbol	Company Name (Issuer)	Trade Type	Shares	Price ($)	Value ($)
2007-12-06	OXY	Occidental Petroleum Corp /de/	Sale	10,000	71.64	716,394
2007-11-02	OXY	Occidental Petroleum Corp /de/	Sale	10,000	67.96	679,635
2007-09-13	OXY	Occidental Petroleum Corp /de/	Option Exercise	46,000	24.66	1,134,360
2007-08-31	OXY	Occidental Petroleum Corp /de/	Option Exercise	50,000	24.66	1,233,000
2007-08-22	OXY	Occidental Petroleum Corp /de/	Option Exercise	10,478	20.11	210,738
2007-06-13	OXY	Occidental Petroleum Corp /de/	Sale	10,000	57.09	570,881
2007-06-15	OXY	Occidental Petroleum Corp /de/	Sale	10,000	59.02	590,239
2007-06-08	OXY	Occidental Petroleum Corp /de/	Sale	10,000	56.28	562,755
2007-05-18	OXY	Occidental Petroleum Corp /de/	Sale	20,000	54.54	1,090,740
2007-05-21	OXY	Occidental Petroleum Corp /de/	Sale	10,000	54.84	548,433
2006-09-01	OXY	Occidental Petroleum Corp /de/	Sale	10,000	51.45	514,500
2006-08-18	OXY	Occidental Petroleum Corp /de/	Sale	10,000	52.29	522,905
2006-08-09	OXY	Occidental Petroleum Corp /de/	Option Exercise	101,788	31.13	3,168,660
2006-08-09	OXY	Occidental Petroleum Corp /de/	Option Exercise	101,788	31.13	3,168,660
2006-05-09	OXY	Occidental Petroleum Corp /de/	Sale	9,450	104.84	990,774
2006-05-10	OXY	Occidental Petroleum Corp /de/	Sale	4,700	105.61	496,374
2006-05-04	OXY	Occidental Petroleum Corp /de/	Sale	17,722	104.50	1,851,913
2006-05-01	OXY	Occidental Petroleum Corp /de/	Option Exercise	43,695	26.43	1,154,858

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 Hallock Richard W (Executive VP - Human Resources of Occidental Petroleum Corp /de/ at the time of this reporting) see the Securities and Exchange Commission (SEC) website.