X0306 4 2021-07-28 0 0000797468 OCCIDENTAL PETROLEUM CORP /DE/ OXY 0001808899 Peterson Robert L OCCIDENTAL PETROLEUM CORPORATION 5 GREENWAY PLAZA, SUITE 110 HOUSTON TX 77046 0 1 0 0 SVP & CFO Common Stock 2021-07-28 4 D 0 4652 0 D 127940 D Common Stock 9812 I By OPC Savings Plan Represents the forfeiture of performance-based restricted stock granted to the reporting person on July 9, 2014 that were eligible to vest based on certain financial performance objectives. Based on a plan statement dated November 15, 2021. /s/ Brittany A. Smith, Attorney-in-Fact for Robert L. Peterson 2021-11-17