X0306 4 2017-01-31 0 0000797468 OCCIDENTAL PETROLEUM CORP /DE/ OXY 0001026545 CHAZEN STEPHEN I OCCIDENTAL PETROLEUM CORPORATION 5 GREENWAY PLAZA, STE. 110 HOUSTON TX 77046 1 0 0 0 Common Stock 2017-01-31 4 S 0 2000 67.65 D 1541619 D Common Stock 2017-02-02 4 S 0 2000 68.35 D 1539619 D Common Stock 14776 I By OPC Savings Plan The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 20, 2016. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.38 to $67.82, inclusive. The reporting person undertakes to provide to Occidental Petroleum Corporation, any security holder of Occidental Petroleum Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote 2 of this Form 4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.05 to $68.54, inclusive. The reporting person undertakes to provide to Occidental Petroleum Corporation, any security holder of Occidental Petroleum Corporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote 3 of this Form 4. Based on a plan statement dated January 31, 2017. /s/ Kelly A. Gaide, Attorney-in-Fact for Stephen I. Chazen 2017-02-02