OXY · Occidental Petroleum Corp /De/

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on July 31, 2027.

Represents shares of common stock withheld to satisfy tax withholding obligations upon the accelerated vesting of previously reported restricted stock units in connection with the reporting person's retirement as President and CEO effective June 1, 2026.

Award of common stock under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan for non-employee director service.

Includes 15 shares acquired in April 2026 through dividend reinvestment.

Represents shares of common stock withheld to satisfy tax withholding obligations.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on May 31, 2027.

Award of common stock under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Award of common stock units under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Includes 58 shares acquired between July 2025 and April 2026 through dividend reinvestment.

Award of common stock under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Represents shares of common stock withheld to satisfy tax withholding obligations.

Represents shares of common stock withheld to satisfy tax withholding obligations.

Award of common stock under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Includes 1,170 shares acquired between July 2025 and April 2026 through dividend reinvestment.

Award of common stock under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Represents shares of common stock withheld to satisfy tax withholding obligations.

Award of common stock under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Includes 258 shares acquired between July 2025 and April 2026 through dividend reinvestment.

Award of common stock under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Award of common stock under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Award of common stock units under Occidental Petroleum Corporation's Amended and Restated 2015 Long-Term Incentive Plan.

Represents shares of common stock withheld to satisfy tax withholding obligations.

Represents shares of common stock withheld to satisfy tax withholding obligations.

On April 14, 2026, the reporting person transferred 5,000 Issuer common shares to each of the three trusts of which he is a co-trustee.

On April 14, 2026, the reporting person transferred 5,000 Issuer common shares to each of the three trusts of which he is a co-trustee.

AMMEA Trust #3, Avedick B. Poladian as co-trustee.

On April 14, 2026, the reporting person transferred 5,000 Issuer common shares to each of the three trusts of which he is a co-trustee.

On April 14, 2026, the reporting person transferred 5,000 Issuer common shares to each of the three trusts of which he is a co-trustee.

AMMEA Trust #2, Avedick B. Poladian as co-trustee.

On April 14, 2026, the reporting person transferred 5,000 Issuer common shares to each of the three trusts of which he is a co-trustee.

On April 14, 2026, the reporting person transferred 5,000 Issuer common shares to each of the three trusts of which he is a co-trustee.

AMMEA Trust #1, Avedick B. Poladian as co-trustee.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on February 28, 2027.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on February 28, 2027.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on February 28, 2027.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on February 28, 2027.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on February 28, 2027.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on February 28, 2027.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on February 28, 2027.

Award of RSUs pursuant to the Issuer's Amended and Restated 2015 Long-Term Incentive Plan. Each RSU represents a contingent right to receive one share of the Issuer's common stock upon vesting. The RSUs will vest in three equal annual installments beginning on February 28, 2027.

Represents shares of common stock withheld to satisfy tax withholding obligations upon the vesting of previously reported restricted stock units (RSUs).

Represents shares of common stock withheld to satisfy tax withholding obligations upon the vesting of previously reported restricted stock units (RSUs).

Represents shares of common stock withheld to satisfy tax withholding obligations upon the vesting of previously reported restricted stock units (RSUs).

Represents shares of common stock withheld to satisfy tax withholding obligations upon the vesting of previously reported restricted stock units (RSUs).

Represents shares of common stock withheld to satisfy tax withholding obligations upon the vesting of previously reported restricted stock units (RSUs).

Represents shares of common stock withheld to satisfy tax withholding obligations upon the vesting of previously reported restricted stock units (RSUs).

Represents shares of common stock withheld to satisfy tax withholding obligations upon the vesting of previously reported restricted stock units (RSUs).

Represents shares of common stock withheld to satisfy tax withholding obligations upon the vesting of previously reported restricted stock units (RSUs).

As reported on that certain Form 4 filed on behalf of the reporting person on May 20, 2021, the reporting person gifted 30,625 shares of common stock of the Issuer to a grantor retained annuity trust (the "GRAT") with an independent trustee on May 19, 2021 for tax and estate planning purposes. On February 23, 2026, in satisfaction of the GRAT's annuity obligation, the reporting person received 3,656 shares of the Issuer's common stock.

Represents shares of common stock withheld to satisfy tax withholding obligations.

Represents shares of common stock received upon the vesting of a performance stock unit award granted under the Issuer's Amended and Restated 2015 Long-Term Incentive Plan.

Represents shares of common stock withheld to satisfy tax withholding obligations.

Represents shares of common stock received upon the vesting of a performance stock unit award granted under the Issuer's Amended and Restated 2015 Long-Term Incentive Plan.

Represents shares of common stock received upon the vesting of a performance stock unit award granted under the Issuer's Amended and Restated 2015 Long-Term Incentive Plan.

Represents shares of common stock received upon the vesting of a performance stock unit award granted under the Issuer's Amended and Restated 2015 Long-Term Incentive Plan.

Represents shares of common stock received upon the vesting of a performance stock unit award granted under the Issuer's Amended and Restated 2015 Long-Term Incentive Plan.

Includes 76 shares acquired between April 2025 and January 2026 through dividend reinvestment.