OXY / Occidental Petroleum Corporation - SEC Filings, Annual Report, Proxy Statement

Occidental Petroleum Corporation
US ˙ NYSE ˙ US6745991058

Basic Stats
LEI IM7X0T3ECJW4C1T7ON55
CIK 797468
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Occidental Petroleum Corporation
SEC Filings (Chronological Order)
This page provides a complete, chronological list of SEC Filings, excluding ownership filings which we provide elsewhere.
August 7, 2025 EX-FILING FEES

Calculation of Filing Fee Table FORM 424(b)(2) (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Table FORM 424(b)(2) (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Note # Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid 1 Equity Common Stock, par value $0.

August 7, 2025 424B2

31,990,880 Shares  Common Stock

Filed Pursuant to Rule 424(b)(2) Registration No. 333-288999 Explanatory Note: The sole purpose of this filing is to add inline XBRL tagging of the filing fee exhibit to the Registrant’s Prospectus Supplement dated July 28, 2025, filed on July 28, 2025 with the U.S. Securities and Exchange Commission pursuant to Rule 424(b)(2) under the Securities Act of 1933 (the “Prospectus Supplement”). This fi

August 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 6, 2025 OCCIDENTAL PETROLE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 6, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commi

August 6, 2025 EX-10.1

Amended and Restated Occidental Petroleum Corporation 2015 Long-Term Incentive Plan

Exhibit 10.1 AMENDED AND RESTATED OCCIDENTAL PETROLEUM CORPORATION 2015 LONG-TERM INCENTIVE PLAN (As Amended and Restated Effective as of May 2, 2025) 1.Purpose. The purpose of the Occidental Petroleum Corporation 2015 Long Term Incentive Plan, as amended and restated from time to time (the “Plan”), is to provide a means through which Occidental Petroleum Corporation, a Delaware corporation (the “

August 6, 2025 EX-99.1

Occidental Announces 2nd Quarter 2025 Results

PRESS RELEASE Occidental Announces 2nd Quarter 2025 Results •Announcing $950 million of additional divestitures since the start of the second quarter of 2025, of which approximately $370 million has already closed.

August 6, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM CORP

July 28, 2025 S-3ASR

As Filed with the Securities and Exchange Commission on July 28, 2025

As Filed with the Securities and Exchange Commission on July 28, 2025 Registration No.

July 28, 2025 EX-25.1

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of The Bank of New York Mellon Trust Company, N.A., as Trustee with respect to the Indenture dated as of August 8, 2019.

Exhibit 25.1 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) || THE BA

July 28, 2025 424B2

31,990,880 Shares  Common Stock

Filed Pursuant to Rule 424(b)(2) Registration No. 333-288999 Prospectus Supplement (To Prospectus dated July 28, 2025) 31,990,880 Shares  Common Stock This prospectus supplement relates to the issuance and sale of up to 31,990,880 shares of its common stock, par value $0.20 per share (the “Common Stock”), by Occidental Petroleum Corporation (“Occidental”) upon the exercise of warrants issued by Oc

July 28, 2025 EX-FILING FEES

Filing Fee Table.

Calculation of Filing Fee Tables S-3 OCCIDENTAL PETROLEUM CORP /DE/ Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Debt Senior Debt Securities 457(r) 0.

July 28, 2025 EX-99.1

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

Exhibit 99.1 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS On August 1, 2024 (“Closing Date”), Occidental Petroleum Corporation (“Occidental”) consummated the purchase of CrownRock, L.P. (“CrownRock”) for total consideration of approximately $12.4 billion (“the acquisition”) consisting of approximately $9.4 billion of cash consideration (inclusive of and subject to certain working ca

July 28, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 28, 2025 OCCIDENTAL PETROLEU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 28, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

July 28, 2025 EX-25.2

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of The Bank of New York Mellon Trust Company, N.A., as Trustee with respect to the form of Indenture (Subordinated Debt Securities).

Exhibit 25.2 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) || THE BA

July 28, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 28, 2025 OCCIDENTAL PETROLEU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 28, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

July 28, 2025 EX-FILING FEES

Calculation of Filing Fee Table FORM 424(b)(2) (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Table FORM 424(b)(2) (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Note # Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid 1 Equity Common Stock, par value $0.

July 14, 2025 EX-99.1

Second Quarter 2025 Earnings Considerations

Exhibit 99.1 Second Quarter 2025 Earnings Considerations Occidental Petroleum Corporation ("Occidental") is providing the following summary of earnings considerations that management believes will impact results for the second quarter of 2025. The summary is intended only to provide information regarding current estimates of these factors. It is not comprehensive of all results for and changes tha

July 14, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 14, 2025 OCCIDENTAL PETROLEU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 14, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

June 27, 2025 11-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 1-9210 A. Full title of the plan

May 7, 2025 EX-99.1

Occidental Announces 1st Quarter 2025 Results

PRESS RELEASE Occidental Announces 1st Quarter 2025 Results •Closed asset sales of $1.

May 7, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM COR

May 7, 2025 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 7, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commissi

May 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 2, 2025 OCCIDENTAL PETROLEUM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 2, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commission F

April 17, 2025 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Tables Form S-8 (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in its Charter) Table 1 - Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered(1) Proposed Maximum Offering Price Per Unit(2) Maximum Aggregate Offering Price(2) Fee Rate Amount of Registration Fee Equity Common Stock, $0.

April 17, 2025 S-8

As filed with the Securities and Exchange Commission on April 17, 2025

As filed with the Securities and Exchange Commission on April 17, 2025 Registration No.

April 9, 2025 EX-99.1

First Quarter 2025 Earnings Considerations

Exhibit 99.1 First Quarter 2025 Earnings Considerations Occidental Petroleum Corporation ("Occidental") is providing the following summary of earnings considerations that management believes will impact results for the first quarter of 2025. The summary is intended only to provide information regarding current estimates of these factors. It is not comprehensive of all results for and changes that

April 9, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 9, 2025 OCCIDENTAL PETROLEU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 9, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

April 7, 2025 SC TO-I/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (AMENDMENT NO. 2) TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 OCCIDENTAL PETROLEUM CORPORATION (Name of Subject C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (AMENDMENT NO. 2) TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 OCCIDENTAL PETROLEUM CORPORATION (Name of Subject Company (Issuer) and Filing Person (Offeror)) WARRANTS TO PURCHASE COMMON STOCK (Title of Class of Securities) 674599 162 (CUSIP Number of Class of Sec

April 1, 2025 SC TO-I/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (AMENDMENT NO. 1) TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 OCCIDENTAL PETROLEUM CORPORATION (Name of Subject C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (AMENDMENT NO. 1) TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 OCCIDENTAL PETROLEUM CORPORATION (Name of Subject Company (Issuer) and Filing Person (Offeror)) WARRANTS TO PURCHASE COMMON STOCK (Title of Class of Securities) 674599 162 (CUSIP Number of Class of Sec

April 1, 2025 EX-99.(5)(C)

(5)(C) Press release, dated April 1, 2025.

Exhibit (5)(c) PRESS RELEASE Occidental Announces Results of Offer to Exercise Warrants at a Temporarily Reduced Price HOUSTON — April 1, 2025 — Occidental (NYSE: OXY) today announced the results of its offer to exercise Occidental’s outstanding publicly traded warrants (the “Warrants”) at a temporarily reduced price of $21.

March 20, 2025 DEF 14A

DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ☑ Filed by the Registrant ☐ Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☑ Defin

March 20, 2025 DEFA14A

UNITED STATES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ☑ Filed by the Registrant ☐ Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

March 3, 2025 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables Schedule TO (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Transaction Valuation Note # Transaction Valuation Fee Rate Amount of filing fee Fees to Be Paid 1 $ 3,606,288,260.

March 3, 2025 424B2

74,020,695 Shares

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(2) Registration No. 333-266420 Prospectus Supplement (To Prospectus dated July 29, 2022) 74,020,695 Shares   Common Stock This prospectus supplement relates to the issuance and sale of up to 74,020,695 shares of its common stock, par value $0.20 per share (the “Common Stock”), by Occidental Petroleum Corporation (“Occidental”) upon the exercise of wa

March 3, 2025 EX-FILING FEES

Calculation of Filing Fee Table FORM 424(b)(2) (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities

Exhibit 107 Calculation of Filing Fee Table FORM 424(b)(2) (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in its Charter) Table 1: Newly Registered and Carry Forward Securities Note # Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to Be Paid 1 Equity Common Stock, par value $0.

March 3, 2025 EX-99.(A)(1)(G)

(1)(G) Form of Letter Used by Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees.

Exhibit (a)(1)(G) Letter to Clients OFFER TO EXERCISE WARRANTS TO PURCHASE COMMON STOCK OF OCCIDENTAL PETROLEUM CORPORATION   March 3, 2025 THE OFFER TO EXERCISE (AND ASSOCIATED WITHDRAWAL RIGHTS) WILL EXPIRE AT 5:00 P.

March 3, 2025 EX-99.(A)(5)(B)

(5)(B) Press release, dated March 3, 2025.

Exhibit (a)(5)(B)               PRESS RELEASE         Occidental Announces Offer to Exercise Warrants at a Temporarily Reduced Price HOUSTON – March 3, 2025 – Occidental (NYSE: OXY) today announced an offer to exercise its outstanding publicly traded warrants (the “Warrants”) at a temporarily reduced price (the “Offer”).

March 3, 2025 EX-99.(A)(1)(E)

(1)(E) Notice of Guaranteed Delivery.

Exhibit (a)(1)(E) NOTICE OF GUARANTEED DELIVERY OF WARRANTS PURSUANT TO OFFER TO EXERCISE WARRANTS TO PURCHASE COMMON STOCK OF OCCIDENTAL PETROLEUM CORPORATION All capitalized terms not defined in this letter shall have the meanings set forth in the Offer to Exercise Warrants to Purchase Common Stock of Occidental Petroleum Corporation, dated March 3, 2025 (together with any amendments or supplements thereto, the “Offer to Exercise”).

March 3, 2025 EX-99.(A)(1)(F)

(1)(F) Form of Letter To Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees.

Exhibit (a)(1)(F) Letter to Brokers, Dealers, Commercial Banks, Trust Companies and Other Nominees   OFFER TO EXERCISE WARRANTS TO PURCHASE COMMON STOCK OF OCCIDENTAL PETROLEUM CORPORATION   MARCH 3, 2025 THE OFFER TO EXERCISE (AND ASSOCIATED WITHDRAWAL RIGHTS) WILL EXPIRE AT 5:00 P.

March 3, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 3, 2025 OCCIDENTAL PETROLEU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 3, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

March 3, 2025 424B3

The date of this prospectus supplement is March 3, 2025.

Filed Pursuant to Rule 424(b)(3) Registration No. 333-266420 Prospectus Supplement (to Prospectus dated July 29, 2022 as supplemented March 3, 2025)   This prospectus supplement is being filed to update and supplement the information contained in our prospectus dated July 29, 2022 (as supplemented by the prospectus supplement thereto dated March 3, 2025, the “Prospectus”), with the following infor

March 3, 2025 EX-99.(A)(1)(D)

(1)(D) Form of Notice of Withdrawal.

Exhibit (a)(1)(D) NOTICE OF WITHDRAWAL OF EXERCISE OF WARRANTS PURSUANT TO OFFER TO EXERCISE WARRANTS TO PURCHASE COMMON STOCK OF OCCIDENTAL PETROLEUM CORPORATION THE OFFER TO EXERCISE (AND ASSOCIATED WITHDRAWAL RIGHTS) WILL EXPIRE AT 5:00 P.

March 3, 2025 EX-99.(A)(1)(B)

(1)(B) Offer to Exercise Warrants to Purchase Common Stock of Occidental Petroleum Corporation.

TABLE OF CONTENTS Exhibit (a)(1)(B) NEITHER THE U.S. SECURITIES AND EXCHANGE COMMISSION NOR ANY STATE SECURITIES COMMISSION HAS APPROVED OR DISAPPROVED OF THE TRANSACTION CONTEMPLATED HEREIN, PASSED UPON THE MERITS OR FAIRNESS OF THE TRANSACTION OR PASSED UPON THE ADEQUACY OR ACCURACY OF THE DISCLOSURE IN THIS DOCUMENT. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. OFFER TO EXERCISE WA

March 3, 2025 EX-99.(D)(2)

(2) First Amendment to Warrant Agreement, dated as of March 3, 2025, by and between the Company and Equiniti Trust Company, LLC.

Exhibit (d)(2) FIRST AMENDMENT TO WARRANT AGREEMENT This First Amendment to Warrant Agreement (this “Amendment”) is made as of March 3, 2025 between Occidental Petroleum Corporation, a Delaware corporation (the “Company”), and Equiniti Trust Company, LLC (as successor-in-interest to Equiniti Trust Company), as Warrant Agent (the “Warrant Agent”), and amends that certain Warrant Agreement, dated as of July 24, 2020, by and between the Company and the Warrant Agent (the “Warrant Agreement”).

March 3, 2025 EX-99.(A)(1)(A)

(1)(A) Letter to Holders of Warrants.

Exhibit (a)(1)(A) March 3, 2025 To the Holders of Occidental Warrants: This letter is to inform you that Occidental Petroleum Corporation (the “Company”) is offering to holders of its outstanding warrants (the “Warrants”), each to purchase one share of the Company’s common stock, par value $0.

March 3, 2025 EX-99.(A)(1)(C)

(1)(C) Form of Election to Participate and Exercise Warrants.

Exhibit (a)(1)(C) ELECTION TO PARTICIPATE AND EXERCISE WARRANTS PURSUANT TO OFFER TO EXERCISE WARRANTS TO PURCHASE COMMON STOCK OF OCCIDENTAL PETROLEUM CORPORATION THE OFFER TO EXERCISE (AND ASSOCIATED WITHDRAWAL RIGHTS) WILL EXPIRE AT 5:00 P.

March 3, 2025 SC TO-I

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 OCCIDENTAL PETROLEUM CORPORATION (Name of Subject Company (Issuer) an

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 OCCIDENTAL PETROLEUM CORPORATION (Name of Subject Company (Issuer) and Filing Person (Offeror)) WARRANTS TO PURCHASE COMMON STOCK (Title of Class of Securities) 674599 162 (CUSIP Number of Class of Securities) Nicole E.

February 18, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Ac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2024 For the transition period from to Commission File Number 1-9210 Occidental Petroleum Corporation

February 18, 2025 EX-99.1

Ryder Scott Company Process Review of the Estimated Future Proved Reserves and Income Attributable to Certain Leasehold and Royalty Interests and Certain Economic Interests Derived Through Production Sharing Contracts as of December 31, 202

Exhibit 99.1 OCCIDENTAL PETROLEUM CORPORATION Process Review of the Estimated Future Proved Reserves and Income Attributable to Certain Leaseholds and Interests SEC Parameters As of December 31, 2024 /s/ Herman G. Acuña Herman G. Acuña, P.E. TBPELS License No. 92254 President [SEAL] RYDER SCOTT COMPANY, L.P. TBPELS Firm Registration No. F-1580 RYDER SCOTT COMPANY PETROLEUM CONSULTANTS TBPELS REGIS

February 18, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 18, 2025 OCCIDENTAL PETR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 18, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Co

February 18, 2025 EX-10.18

(18) Occidental Petroleum Corporation Executive Change in Control Severance Plan (As Amended and Restated Effective February 12, 2025) (filed as Exhibit 10.18 to the Annual Report on Form 10-K of Occidental for the fiscal year ended December 31, 2024, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION EXECUTIVE CHANGE IN CONTROL SEVERANCE PLAN (as amended and restated effective February 12, 2025) Introduction From time to time, the Company may explore potential transactions that could result in a Change in Control.

February 18, 2025 EX-19.1

Occidental Petroleum Insider Trading Policy

INSIDER TRADING POLICY Exhibit 19.1 POLICY NO. 21:50:01 PAGE 1 of 11 ORIGINAL ISSUE DATE 21-September-1981 SUPERSEDES POLICY DATE 17-October-2018 EFFECTIVE DATE 18-February-2025 DEPARTMENT ISSUED BY Legal Department APPROVED BY Sylvia J. Kerrigan, Senior Vice President & Chief Legal Officer Sunil Mathew, Senior Vice President & Chief Financial Officer 1.PURPOSE To restate, reinforce and expand upo

February 18, 2025 EX-21.1

List of subsidiaries of Occidental as of December 31, 2024.

Exhibit 21 LIST OF SUBSIDIARIES The following is a list of the Registrant’s subsidiaries at December 31, 2024.

February 18, 2025 EX-10.17

(17) Occidental Petroleum Corporation Executive Severance Plan (As Amended and Restated Effective November 6, 2024) (filed as Exhibit 10.17 to the Annual Report on Form 10-K of Occidental for the fiscal year ended December 31, 2024, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION EXECUTIVE SEVERANCE PLAN (as amended and restated effective November 6, 2024) Introduction As of the Effective Date, the Company adopted this plan known as the Occidental Petroleum Corporation Executive Severance Plan.

February 18, 2025 EX-99.1

Occidental Announces 4th Quarter 2024 Results

PRESS RELEASE Occidental Announces 4th Quarter 2024 Results •Progressed on Occidental's deleveraging priorities: –Completed our near-term debt repayment target of $4.

January 10, 2025 EX-99.1

Fourth Quarter 2024 Earnings Considerations

Exhibit 99.1 Fourth Quarter 2024 Earnings Considerations Occidental Petroleum Corporation ("Occidental") is providing the following summary of earnings considerations that management believes will impact results for the fourth quarter of 2024. The summary is intended only to provide information regarding current estimates of these factors. It is not comprehensive of all results for and changes tha

January 10, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 10, 2025 OCCIDENTAL PETRO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 10, 2025 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Com

November 12, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 12, 2024 OCCIDENTAL PETR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 12, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Co

November 12, 2024 EX-3.1

Amended and Restated By-laws of Occidental Petroleum Corporation as of November 6, 2024 (filed as Exhibit 3.1 to the Current Report on Form 8-K of Occidental filed on November 12, 2024, File No. 1-9210).

Exhibit 3.1 AMENDED AND RESTATED BY-LAWS OF OCCIDENTAL PETROLEUM CORPORATION (hereinafter called the “Corporation”) ARTICLE I OFFICES SECTION 1. Registered Office. The registered office of the Corporation shall be in the State of Delaware. SECTION 2. Other Offices. The Corporation may also have offices at such other places both within and without the State of Delaware as the Board of Directors may

November 12, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 6, 2024 OCCIDENTAL PETRO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 6, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commiss

November 12, 2024 EX-99.1

Occidental Announces 3rd Quarter 2024 Results

PRESS RELEASE Occidental Announces 3rd Quarter 2024 Results •Strong operational performance drove operating cash flow of $3.

November 12, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM

October 25, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 25, 2024 OCCIDENTAL PETRO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 25, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Com

October 9, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 9, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Comm

October 9, 2024 EX-99.1

Third Quarter 2024 Earnings Considerations

Exhibit 99.1 Third Quarter 2024 Earnings Considerations Occidental Petroleum Corporation ("Occidental") is providing the following summary of earnings considerations that management believes will impact results for the third quarter of 2024. The summary is intended only to provide information regarding current estimates of these factors. It is not comprehensive of all results for and changes that

September 26, 2024 EX-99.1

Resource Extraction Payment Report for the fiscal year ended

Exhibit 99.1 Payments by Project for the year ended December 31, 2023, in Thousands of US Dollars Segment Country Project Payment Currency Fees Royalties Taxes Bonuses Total Corporate1 United States Entity Level US Federal Income Tax USD $ — $ — $ 485,476 $ — $ 485,476 Corporate Total $ — $ — $ 485,476 $ — $ 485,476 Oil and Gas Algeria DZ-30—Oil/Natural Gas—Well In-Kind $ — $ — $ 285,006 $ — $ 285

September 26, 2024 EX-2.01.SCH

XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT

Government of Abu Dhabi, DEPARTMENT OF FINANCE – ABU DHABI [Member] Government of Abu Dhabi, DEPARTMENT OF FINANCE – ABU DHABI QATAR OM-ZA—Oil/Natural Gas—Well [Member] OM-ZA—Oil/Natural Gas—Well Government of Oman, MINISTRY OF FINANCE [Member] OM-DA—Oil/Natural Gas—Well, In-Kind [Member] AE-AZ—Oil/Natural Gas—Well [Member] AE-AZ—Oil/Natural Gas—Well ALGERIA UNITED KINGDOM AE-AZ—Natural Gas—Well [

September 26, 2024 EX-2.01.INS

XBRL INSTANCE DOCUMENT

iso4217:USD 0000797468 2023-01-01 2023-12-31 0000797468 oxy:DZ30OilNaturalGasWellInKindMember 2023-01-01 2023-12-31 0000797468 oxy:COMAGCaribbeanSeaOilNaturalGasWellMember 2023-01-01 2023-12-31 0000797468 oxy:OMDAOilNaturalGasWellInKindMember 2023-01-01 2023-12-31 0000797468 oxy:OMDAOilNaturalGasWellMember 2023-01-01 2023-12-31 0000797468 oxy:OMWUOilNaturalGasWellInKindMember 2023-01-01 2023-12-31

September 26, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report OCCIDENTAL PETROLEUM CORPORATION (Exact name of registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD Specialized Disclosure Report OCCIDENTAL PETROLEUM CORPORATION (Exact name of registrant as specified in its charter) Delaware 95-4035997 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 5 Greenway Plaza, Suite 110 Houston, Texas 77046 (Address of principal executive o

August 14, 2024 424B7

29,560,619 Shares Common Stock

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(7) Registration No. 333-281228 Prospectus Supplement (To Prospectus dated August 2, 2024)   29,560,619 Shares Common Stock The Selling Stockholder (as defined herein) is offering 29,560,619 shares of common stock, par value $0.20 per share (“common stock”), of Occidental Petroleum Corporation. We will not receive any of the proceeds of the sale of co

August 14, 2024 SC 13D/A

WES / Western Midstream Partners, LP - Limited Partnership / OCCIDENTAL PETROLEUM CORP /DE/ - SC 13D/A Activist Investment

SC 13D/A 1 ef20034141sc13da.htm SC 13D/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 7) Western Midstream Partners, LP (Name of Issuer) Common Units Representing Limited Partner Interests (Title of Class of Securities) 958669 103 (CUSIP Number) Nicole E. Clark 5 Greenway Plaza, Suite 110 Houston, Texas

August 14, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 12, 2024 OCCIDENTAL PETROL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 12, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Comm

August 14, 2024 EX-1.1

29,560,619 Shares OCCIDENTAL PETROLEUM CORPORATION. COMMON STOCK, PAR VALUE $0.20 PER SHARE UNDERWRITING AGREEMENT

Exhibit 1.1 Execution Version 29,560,619 Shares OCCIDENTAL PETROLEUM CORPORATION. COMMON STOCK, PAR VALUE $0.20 PER SHARE UNDERWRITING AGREEMENT August 12, 2024 J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 Morgan Stanley & Co. LLC 1585 Broadway New York, New York 10036 RBC Capital Markets, LLC Three World Financial Center 200 Vesey Street New York, New York 10281-8098 as

August 13, 2024 424B7

The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdictio

TABLE OF CONTENTS Filed Pursuant to Rule 424(b)(7) Registration No. 333-281228 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement is not an offer to sell these securities and it is not soliciting an offer to buy these securities in any jurisdiction where such offer or sale is not permitted. SUBJECT TO COMPLETION, DAT

August 12, 2024 EX-99.2

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

Exhibit 99.2 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS On August 1, 2024, Occidental Petroleum Corporation (“Occidental”) consummated the purchase of CrownRock, L.P. (“CrownRock”) for total consideration of approximately $12.4 billion (“the acquisition”) consisting of approximately $9.4 billion of cash consideration (inclusive of and subject to certain working capital and other c

August 12, 2024 EX-99.1

Condensed Consolidated Financial Statements of CrownRock, L.P. and Subsidiaries for the Period Ended June 30, 2024 TABLE OF CONTENTS FINANCIAL INFORMATION Page Condensed Consolidated Financial Statements (Unaudited) Condensed Consolidated Balance She

Exhibit 99.1 Condensed Consolidated Financial Statements of CrownRock, L.P. and Subsidiaries for the Period Ended June 30, 2024 TABLE OF CONTENTS FINANCIAL INFORMATION Page Condensed Consolidated Financial Statements (Unaudited) Condensed Consolidated Balance Sheet as of June 30, 2024 2 Condensed Consolidated Statement of Income for the Six Months Ended June 30, 2024 3 Condensed Consolidated State

August 12, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 12, 2024 OCCIDENTAL PETROL

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 12, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Comm

August 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM CORP

August 7, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 7, 2024 OCCIDENTAL PETROLE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 7, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commi

August 7, 2024 EX-10.1

Form of Occidental Petroleum Corporation 2015 Long-Term Incentive Plan Common Stock Unit Award For Non-Employee Directors Grant Agreement.

Exhibit 10.1 OCCIDENTAL PETROLEUM CORPORATION AMENDED AND RESTATED 2015 LONG-TERM INCENTIVE PLAN COMMON STOCK UNIT AWARD FOR NON-EMPLOYEE DIRECTORS GRANT AGREEMENT Name of Grantee: Date of Grant: Number of Shares of Common Stock: This Agreement (this “Agreement”) is made as of the Date of Grant between OCCIDENTAL PETROLEUM CORPORATION, a Delaware corporation (“Occidental”), and the Eligible Person

August 7, 2024 EX-99.1

Occidental Announces 2nd Quarter 2024 Results

PRESS RELEASE Occidental Announces 2nd Quarter 2024 Results •Strong operational performance drove operating cash flow of $2.

August 7, 2024 EX-10.2

Amendment No. 1, dated as of May 16, 2024, to the Third Amended and Restated Credit Agreement, dated as of February 2, 2024, by and among Occidental Petroleum Corporation, the banks party thereto, as lenders, and JPMorgan Chase Bank, N.A., as administrative agent (filed as Exhibit 10.2 to the Quarterly Report on Form 10-Q of Occidental for the quarterly period ended June 30, 2024, File No. 1-9210).

AMENDMENT NO. 1 This AMENDMENT NO. 1 dated as of May 16, 2024 (this “Amendment”), to the Third Amended and Restated Credit Agreement, dated as of February 2, 2024 (as amended, restated, supplemented or otherwise modified prior to giving effect to this Amendment, the “Existing Credit Agreement” and, as amended pursuant to this Amendment, the “Amended Credit Agreement”), among OCCIDENTAL PETROLEUM C

August 2, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 2, 2024 OCCIDENTAL PETROLE

false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468DETX00007974682023-12-282023-12-280000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2023-12-282023-12-280000797468us-gaap:CommonStockMember2023-12-282023-12-28false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468DETXOXYWSNYSENYSE00007974682024-02-022024-02-020000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2024-02-022024-02-020000797468us-gaap:CommonStockMember2024-02-022024-02-02false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468NYSENYSE00007974682024-07-192024-07-190000797468us-gaap:CommonStockMember2024-07-192024-07-190000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2024-07-192024-07-19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

August 2, 2024 EX-99.1

Occidental Announces Termination of Exchange Offer and Consent Solicitation for CrownRock Notes

Exhibit 99.1 Occidental Announces Termination of Exchange Offer and Consent Solicitation for CrownRock Notes HOUSTON — August 2, 2024 — Occidental (NYSE: OXY) today announced that it has elected to terminate its previously announced offer to exchange (the “Exchange Offer”) any and all outstanding 5.000% Senior Notes due 2029 (the “CrownRock Notes”) issued by CrownRock, L.P. (“CrownRock”) and Crown

August 2, 2024 S-3ASR

As Filed with the Securities and Exchange Commission on August 2, 2024

TABLE OF CONTENTS As Filed with the Securities and Exchange Commission on August 2, 2024 Registration No.

August 2, 2024 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables S-3 OCCIDENTAL PETROLEUM CORP /DE/ Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing Fee Previously Paid in Connection with Unsold Securities to be Carried Forward Newly Registered Securities Fees to be Paid 1 Equity Common Stock, par value $0.

August 1, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 31, 2024 OCCIDENTAL PETROLEU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 31, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

August 1, 2024 EX-99.1

Occidental Completes Acquisition of CrownRock

Exhibit 99.1 PRESS RELEASE Occidental Completes Acquisition of CrownRock HOUSTON — August 1, 2024 — Occidental (NYSE: OXY) today announced today that it has closed its acquisition of CrownRock, L.P. “By completing this transaction, Occidental adds assets that we believe make the best portfolio in our company’s history even stronger and more differentiated. We also welcome new team members who will

August 1, 2024 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 1, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commi

August 1, 2024 EX-10.1

, by and among Occidental Petroleum Corporation, CrownRock Holdings, L.P., and CrownRock GP, LLC.

REGISTRATION RIGHTS AGREEMENT by and among Occidental Petroleum Corporation, CrownRock Holdings, L.

July 26, 2024 EX-1.1

Underwriting Agreement, dated July 23, 2024, by and among Occidental Petroleum Corporation and BofA Securities, Inc., J.P. Morgan Securities LLC, MUFG Securities Americas Inc. and SMBC Nikko Securities America, Inc., as representatives of the several underwriters named therein.

Exhibit 1.1 Execution Version OCCIDENTAL PETROLEUM CORPORATION UNDERWRITING AGREEMENT July 23, 2024 BofA Securities, Inc. One Bryant Park New York, New York 10036 J.P. Morgan Securities LLC 383 Madison Avenue New York, New York 10179 MUFG Securities Americas Inc. 1221 Avenue of the Americas, 6th Floor New York, New York 10020 SMBC Nikko Securities America, Inc. 277 Park Avenue New York, New York 1

July 26, 2024 EX-4.2

Officer’s Certificate pursuant to the Indenture, dated as of July 26, 2024, establishing the Notes and their terms.

Exhibit 4.2 [Execution Version] OCCIDENTAL PETROLEUM CORPORATION Officer’s Certificate July 26, 2024 Pursuant to Section 201 and Section 301 of the Indenture, dated as of August 8, 2019 (the “Indenture”), between Occidental Petroleum Corporation, a Delaware corporation (the “Company”), and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”), the terms of the following five

July 26, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 26, 2024 OCCIDENTAL PETROLEU

false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468DETX00007974682023-12-282023-12-280000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2023-12-282023-12-280000797468us-gaap:CommonStockMember2023-12-282023-12-28false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468DETXOXYWSNYSENYSE00007974682024-02-022024-02-020000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2024-02-022024-02-020000797468us-gaap:CommonStockMember2024-02-022024-02-02false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468NYSENYSE00007974682024-07-192024-07-190000797468us-gaap:CommonStockMember2024-07-192024-07-190000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2024-07-192024-07-19 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

July 25, 2024 EX-FILING FEES

Calculation of Filing Fee Tables (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in Its Charter) Table 1: Newly Registered Securities and Carry Forward Securities

Exhibit 107.1 Calculation of Filing Fee Tables 424(b)(2) (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in Its Charter) Table 1: Newly Registered Securities and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amo

July 25, 2024 424B2

$600,000,000 5.000% Senior Notes due 2027 $1,200,000,000 5.200% Senior Notes due 2029 $1,000,000,000 5.375% Senior Notes due 2032 $1,200,000,000 5.550% Senior Notes due 2034 $1,000,000,000 6.050% Senior Notes due 2054

Filed Pursuant to Rule 424(b)(2) Registration No. 333-266420 Prospectus Supplement (To Prospectus dated July 29, 2022) $600,000,000 5.000% Senior Notes due 2027 $1,200,000,000 5.200% Senior Notes due 2029 $1,000,000,000 5.375% Senior Notes due 2032 $1,200,000,000 5.550% Senior Notes due 2034 $1,000,000,000 6.050% Senior Notes due 2054 We are offering $600,000,000 aggregate principal amount of our

July 23, 2024 FWP

Occidental Petroleum Corporation Pricing Term Sheet July 23, 2024 $600,000,000 5.000% Senior Notes due 2027 $1,200,000,000 5.200% Senior Notes due 2029 $1,000,000,000 5.375% Senior Notes due 2032 $1,200,000,000 5.550% Senior Notes due 2034 $1,000,000

Issuer Free Writing Prospectus Filed Pursuant to Rule 433 Registration No. 333-266420 Relating to the Preliminary Prospectus Supplement dated July 19, 2024 Occidental Petroleum Corporation Pricing Term Sheet July 23, 2024 $600,000,000 5.000% Senior Notes due 2027 $1,200,000,000 5.200% Senior Notes due 2029 $1,000,000,000 5.375% Senior Notes due 2032 $1,200,000,000 5.550% Senior Notes due 2034 $1,0

July 19, 2024 EX-99.1

Occidental Announces Commencement of Exchange Offer and Consent Solicitation for CrownRock Notes

Exhibit 99.1 Occidental Announces Commencement of Exchange Offer and Consent Solicitation for CrownRock Notes HOUSTON — July 19, 2024 — Occidental (NYSE: OXY) today announced that it has commenced a private exchange offer to certain eligible holders (the “Exchange Offer”) for any and all outstanding 5.000% Senior Notes due 2029 (the “CrownRock Notes”) issued by CrownRock, L.P. (“CrownRock”) and Cr

July 19, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 19, 2024 OCCIDENTAL PETROLEU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 19, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

July 19, 2024 EX-99.4

UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS

Exhibit 99.4 UNAUDITED PRO FORMA CONDENSED COMBINED FINANCIAL STATEMENTS On December 10, 2023, Occidental Petroleum Corporation (“Occidental”) and certain of its subsidiaries entered into an agreement (the “purchase agreement”) to purchase CrownRock, L.P. (“CrownRock”) for total consideration of approximately $12.5 billion (“the acquisition”) consisting of $9.4 billion of cash consideration (inclu

July 19, 2024 EX-99.3

Condensed Consolidated Financial Statements of CrownRock, L.P. and Subsidiaries for the Period Ended March 31, 2024 TABLE OF CONTENTS FINANCIAL INFORMATION Page Condensed Consolidated Financial Statements (Unaudited) Condensed Consolidated Balance Sh

Exhibit 99.3 Condensed Consolidated Financial Statements of CrownRock, L.P. and Subsidiaries for the Period Ended March 31, 2024 TABLE OF CONTENTS FINANCIAL INFORMATION Page Condensed Consolidated Financial Statements (Unaudited) Condensed Consolidated Balance Sheet as of March 31, 2024 2 Condensed Consolidated Statement of Income for the Three Months Ended March 31, 2024 3 Condensed Consolidated

July 19, 2024 EX-99.1

Consolidated Financial Statements of CrownRock, L.P. and Subsidiaries As of and for the Year Ended December 31, 2023 TABLE OF CONTENTS FINANCIAL INFORMATION

Exhibit 99.1 Consolidated Financial Statements of CrownRock, L.P. and Subsidiaries As of and for the Year Ended December 31, 2023 TABLE OF CONTENTS FINANCIAL INFORMATION Page Independent Auditor’s Report 3 Consolidated Financial Statements: Consolidated Balance Sheet as of December 31, 2023 5 Consolidated Statement of Income and Comprehensive Income for the Year Ended December 31, 2023 6 Consolida

July 19, 2024 EX-99.2

CAWLEY, GILLESPIE & ASSOCIATES, INC. PETROLEUM CONSULTANTS

Exhibit 99.2 CAWLEY, GILLESPIE & ASSOCIATES, INC. PETROLEUM CONSULTANTS 6500 RIVER PLACE BLVD, SUITE 3-200 306 WEST SEVENTH STREET, SUITE 302 1000 LOUISIANA STREET, SUITE 1900 AUSTIN, TEXAS 78730-1111 FORT WORTH, TEXAS 76102-4987 HOUSTON, TEXAS 77002-5008 512-249-7000 817- 336-2461 713-651-9944 www.cgaus.com January 24, 2024 Mr. Ken Beattie Chief Operating Officer & Senior Vice President CrownQues

July 19, 2024 424B5

SUBJECT TO COMPLETION, DATED JULY 19, 2024

Filed Pursuant to Rule 424(b)(5) Registration No. 333-266420 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell the notes or a solicitation of an offer to buy the notes in any jurisdiction where the offer or sale is not permitted. SUBJECT TO COMPLETION, DATED J

July 19, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 19, 2024 OCCIDENTAL PETROLEU

false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468DETX00007974682023-12-282023-12-280000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2023-12-282023-12-280000797468us-gaap:CommonStockMember2023-12-282023-12-28false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468DETXOXYWSNYSENYSE00007974682024-02-022024-02-020000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2024-02-022024-02-020000797468us-gaap:CommonStockMember2024-02-022024-02-02 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

July 10, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 10, 2024 OCCIDENTAL PETROLEU

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): July 10, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

July 10, 2024 EX-99.1

Second Quarter 2024 Earnings Considerations

Exhibit 99.1 Second Quarter 2024 Earnings Considerations Occidental Petroleum Corporation ("Occidental") is providing the following summary of earnings considerations that management believes will impact results for the second quarter of 2024. The summary is intended only to provide information regarding current estimates of these factors. It is not comprehensive of all results for and changes tha

June 25, 2024 11-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 1-9210 A. Full title of the plan

May 9, 2024 CORRESP

oxy.com

5 Greenway Plaza, Suite 110, Houston, Texas 77046-0521 P.O. Box 27570, Houston, Texas 77227-7570 Phone 713.215.7000 May 9, 2024 Division of Corporation Finance Office of Energy & Transportation U.S. Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549-3628 Attention: Jennifer O’Brien Shannon Buskirk Sandra Wall Brad Skinner Re: Occidental Petroleum Corporation Form 10-K for

May 7, 2024 EX-10.4

(22) Form of Occidental Petroleum Corporation 2015 Long-Term Incentive Plan Restricted Stock Unit Award (applicable to grant to Chief Legal Officer in 2024) (filed as Exhibit 10.4 to the Quarterly Report on Form 10-Q of Occidental for the quarterly period ended March 31, 2024, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION 2015 LONG-TERM INCENTIVE PLAN as Amended and Restated NOTICE OF GRANT OF RESTRICTED STOCK UNIT INCENTIVE AWARD (Time-based Vesting; Equity-settled Award; Section 16 Officers) Pursuant to the Occidental Petroleum Corporation 2015 Long-Term Incentive Plan, as the same may be amended from time to time (the “Plan”), Occidental Petroleum Corporation (“Occidental” and, with its Subsidiaries, the “Company”) grants you (the “Grantee”) an award on the terms and conditions set forth herein (the “Award”).

May 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM COR

May 7, 2024 EX-99.1

Occidental Announces 1st Quarter 2024 Results

PRESS RELEASE Occidental Announces 1st Quarter 2024 Results •Strong operational performance drove operating cash flow of $2.

May 7, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 7, 2024 OCCIDENTAL PETROLEUM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 7, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commissi

May 7, 2024 EX-10.3

(5) Form of Occidental Petroleum Corporation 2015 Long-Term Incentive Plan Restricted Stock Unit Award (applicable to annual grants made in 2024) (filed as Exhibit 10.3 to the Quarterly Report on Form 10-Q of Occidental for the quarterly period ended March 31, 2024, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION 2015 LONG-TERM INCENTIVE PLAN as Amended and Restated NOTICE OF GRANT OF RESTRICTED STOCK UNIT INCENTIVE AWARD (Time-based Vesting; Equity-settled Award; Section 16 Officers) Pursuant to the Occidental Petroleum Corporation 2015 Long-Term Incentive Plan, as the same may be amended from time to time (the “Plan”), Occidental Petroleum Corporation, a Delaware corporation (“Occidental” and, with its Subsidiaries, the “Company”) grants you (the “Grantee”) an award on the terms and conditions set forth herein (the “Award”).

May 7, 2024 EX-10.2

(24) Form of Occidental Petroleum Corporation 2015 Long-Term Incentive Plan Total Shareholder Return Incentive Award (applicable to annual grants made in 2024) (filed as Exhibit 10.2 to the Quarterly Report on Form 10-Q of Occidental for the quarterly period ended March 31, 2024, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION 2015 LONG-TERM INCENTIVE PLAN as Amended and Restated NOTICE OF GRANT OF TOTAL SHAREHOLDER RETURN INCENTIVE AWARD (Equity-based and Equity-settled Award) Pursuant to the Occidental Petroleum Corporation 2015 Long-Term Incentive Plan, as the same may be amended from time to time (the “Plan”), Occidental Petroleum Corporation (“Occidental” and, with its Subsidiaries, the “Company”), grants you (the “Grantee”) an award on the terms and conditions set forth herein (the “Award”).

May 7, 2024 EX-10.1

(14) Form of Occidental Petroleum Corporation 2015 Long-Term Incentive Plan Cash Return on Capital Employed Incentive Award (applicable to annual grants made in 2024) (filed as Exhibit 10.1 to the Quarterly Report on Form 10-Q of Occidental for the quarterly period ended March 31, 2024, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION 2015 LONG-TERM INCENTIVE PLAN as Amended and Restated NOTICE OF GRANT OF CASH RETURN ON CAPITAL EMPLOYED INCENTIVE AWARD (Equity-based and Equity-settled Award) Pursuant to the Occidental Petroleum Corporation 2015 Long-Term Incentive Plan, as the same may be amended from time to time (the “Plan”), Occidental Petroleum Corporation (“Occidental” and, with its Subsidiaries, the “Company”) grants you (the “Grantee”) an award on the terms and conditions set forth herein (the “Award”).

May 6, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 2, 2024 OCCIDENTAL PETROLEUM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 2, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commission F

April 17, 2024 PX14A6G

Occidental Petroleum Corporation (OXY)

Occidental Petroleum Corporation (OXY) Shareholder Alert Voluntary submission by John Chevedden, POB 2673, Redondo Beach, CA 90278 Occidental shareholder since 2012.

April 10, 2024 EX-99.1

First Quarter 2024 Earnings Considerations

Exhibit 99.1 First Quarter 2024 Earnings Considerations Occidental Petroleum Corporation ("Occidental") is providing the following summary of earnings considerations that management believes will impact results for the first quarter of 2024. The summary is intended only to provide information regarding current estimates of these factors. It is not comprehensive of all results for and changes that

April 10, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 10, 2024 OCCIDENTAL PETROLE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): April 10, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commi

March 21, 2024 DEF 14A

DEF 14A

Lead with passion Outperform expectations Deliver results responsibly Unleash opportunities Commit to good We will lead the industry by reaching for the impossible, then achieving it.

March 21, 2024 DEF 14A

DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ☑ Filed by the Registrant ☐ Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☑ Defin

March 21, 2024 DEFA14A

UNITED STATES

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ☑ Filed by the Registrant ☐ Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

February 14, 2024 EX-99.1

Occidental Announces 4th Quarter 2023 Results

PRESS RELEASE Occidental Announces 4th Quarter 2023 Results •Strong operational performance drove operating cash flow of $3.

February 14, 2024 EX-21.1

List of subsidiaries of Occidental as of December 31, 202

Exhibit 21 LIST OF SUBSIDIARIES The following is a list of the Registrant’s subsidiaries at December 31, 2023.

February 14, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Ac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2023 For the transition period from to Commission File Number 1-9210 Occidental Petroleum Corporation

February 14, 2024 EX-99.1

Ryder Scott Company Process Review of the Estimated Future Proved Reserves and Income Attributable to Certain Leasehold and Royalty Interests and Certain Economic Interests Derived Through Production Sharing Contracts as of December 31, 202

Exhibit 99.1 OCCIDENTAL PETROLEUM CORPORATION Process Review of the Estimated Future Proved Reserves and Income Attributable to Certain Leasehold and Interests SEC Parameters As of December 31, 2023 /s/ Herman G. Acuña Herman G. Acuña, P.E. TBPELS License No. 92254 President [SEAL] RYDER SCOTT COMPANY, L.P. TBPELS Firm Registration No. F-1580 RYDER SCOTT COMPANY PETROLEUM CONSULTANTS TBPELS REGIST

February 14, 2024 EX-97.1

ccidental Petroleum Corporation Claw

Exhibit 97.1 Occidental Petroleum Corporation CLAWBACK POLICY Recoupment of Incentive-Based Compensation It is the policy of Occidental Petroleum Corporation (the “Company”) that, in the event the Company is required to prepare an accounting restatement of the Company’s financial statements due to the Company’s material non-compliance with any financial reporting requirement under the federal secu

February 14, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 14, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Co

February 13, 2024 SC 13G/A

OXY / Occidental Petroleum Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0103-occidentalpetroleumco.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 11)* Name of issuer: Occidental Petroleum Corp Title of Class of Securities: Common Stock CUSIP Number: 674599105 Date of Event Which Requires Filing of this Statement: December 29, 2023 Check the appropriate box

February 13, 2024 SC 13G/A

OXY / Occidental Petroleum Corporation / DODGE & COX - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 5 )* OCCIDENTAL PETROLEUM CORPORATION (Name of Issuer) Common Stock and Warrants (Title of Class of Securities) 674599105 (CUSIP Number) December 31, 2023 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

February 5, 2024 EX-10.1

, by and among Occidental Petroleum Corporation, the banks party thereto, as lenders, and JPMorgan Chase Bank, N.A., as administrative agent (filed as Exhibit 10.1 to the Current Report on Form 8-K of Occidental filed on

Exhibit 10.1 EXECUTION VERSION OCCIDENTAL PETROLEUM CORPORATION THIRD AMENDED AND RESTATED CREDIT AGREEMENT Dated as of February 2, 2024 $4,000,000,000 JPMORGAN CHASE BANK, N.A., BOFA SECURITIES, INC., CITIBANK, N.A., HSBC SECURITIES (USA) INC., MUFG BANK, LTD., RBC CAPITAL MARKETS, STANDARD CHARTERED BANK, SUMITOMO MITSUI BANKING CORPORATION, TD SECURITIES (USA) LLC and WELLS FARGO SECURITIES, LL

February 5, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 2, 2024 OCCIDENTAL PETRO

false001-09210OCCIDENTAL PETROLEUM CORP /DE/0000797468DETX00007974682023-12-282023-12-280000797468oxy:WarrantsToPurchaseCommonStock020ParValueMember2023-12-282023-12-280000797468us-gaap:CommonStockMember2023-12-282023-12-28 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

January 25, 2024 SC 13G/A

OXY / Occidental Petroleum Corporation / STATE STREET CORP Passive Investment

SC 13G/A 1 OccidenPetCorp.txt UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 EXIT FILING OCCIDENTAL PETROLEUM CORP (NAME OF ISSUER) COMMON STOCK (TITLE OF CLASS OF SECURITIES) 674599105 (CUSIP NUMBER) 12/31/2023 (DATE OF EVENT WHICH REQUIRES FILING OF THIS STATEMENT) CHECK THE APPROPRIATE BOX TO DESIGNATE THE RULE PURS

January 22, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 19, 2024 OCCIDENTAL PETRO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 19, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commiss

January 10, 2024 EX-99

Fourth Quarter 2023 Earnings Considerations

Exhibit 99.1 Fourth Quarter 2023 Earnings Considerations Occidental Petroleum Corporation ("Occidental") is providing the following summary of earnings considerations that management believes will impact results for the fourth quarter of 2023. The summary is intended only to provide information regarding current estimates of these factors. It is not comprehensive of all results for and changes tha

January 10, 2024 SC 13G/A

OXY / Occidental Petroleum Corporation / BERKSHIRE HATHAWAY INC - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.

January 10, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 10, 2024 OCCIDENTAL PETRO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 10, 2024 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Com

December 28, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 28, 2023 OCCIDENTAL PETR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 28, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware (State or other jurisdiction of incorporation) 1-9210 (Commission Fi

December 28, 2023 EX-10.1

Term Loan Agreement, dated as of December 28, 2023, by and among Occidental Petroleum Corporation, the lenders party thereto and Bank of America, N.A., as administrative agent (filed as Exhibit 10.1 to the Current Report on Form 8-K of Occidental filed on December 28, 2023, File No. 1-9210).

Exhibit 10.1 Execution Version CUSIP: 67460TAP3 364-Day Tranche CUSIP: 67460TAQ1 2-Year Tranche CUSIP: 67460TAR9 OCCIDENTAL PETROLEUM CORPORATION TERM LOAN AGREEMENT Dated as of December 28, 2023 $2,000,000,000 364-day Tranche Term Loan Facility $2,700,000,000 2-year Tranche Term Loan Facility BOFA SECURITIES, INC., as Sole Lead Arranger and Sole Bookrunner, JPMORGAN CHASE BANK, N.A., MUFG BANK, L

December 12, 2023 EX-2.1

Partnership Interest Purchase Agreement, dated as of December 10, 2023, by and among Occidental Petroleum Corporation, CrownRock Holdings, L.P., CrownRock GP, LLC, Coral Holdings LP, LLC and Coral Holdings GP, LLC

Exhibit 2.1 PARTNERSHIP INTEREST PURCHASE AGREEMENT BY AND AMONG CROWNROCK HOLDINGS, L.P. AND CROWNROCK GP, LLC, AS SELLERS, CORAL HOLDINGS LP, LLC, AND CORAL HOLDINGS GP, LLC, AS PURCHASERS, AND OCCIDENTAL PETROLEUM CORPORATION AS PARENT DATED AS OF DECEMBER 10, 2023 TABLE OF CONTENTS Page Article 1 DEFINITIONS AND INTERPRETATION 2 Section 1.1 Defined Terms 2 Section 1.2 References and Rules of C

December 12, 2023 EX-99.1

Occidental to Acquire CrownRock, Strengthening its U.S. Onshore Portfolio with Premier Permian Basin Assets

Exhibit 99.1 PRESS RELEASE Occidental to Acquire CrownRock, Strengthening its U.S. Onshore Portfolio with Premier Permian Basin Assets • Acquisition, valued at approximately $12.0 billion, generates immediate free cash flow accretion • CrownRock’s well-positioned assets expand Occidental’s scale in the Midland Basin • CrownRock’s development-ready inventory high-grades Occidental’s premier Permian

December 12, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 10, 2023 OCCIDENTAL PETR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 10, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Co

November 7, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM

November 7, 2023 EX-99.1

Occidental Announces 3rd Quarter 2023 Results

PRESS RELEASE Occidental Announces 3rd Quarter 2023 Results •Strong operational performance drove operating cash flow of $3.

November 7, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 7, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Com

October 10, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 10, 2023 OCCIDENTAL PETRO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): October 10, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Com

October 10, 2023 EX-99.1

Third Quarter 2023 Earnings Considerations

Exhibit 99.1 Third Quarter 2023 Earnings Considerations Occidental Petroleum Corporation ("Occidental") is providing the average diluted shares outstanding and oil and gas commodity price realizations for the third quarter of 2023. These amounts are preliminary and subject to finalization of Occidental's financial reporting process for the third quarter of 2023. Average Diluted Shares Outstanding

September 14, 2023 SC 13D/A

WES / Western Midstream Partners LP - Unit / OCCIDENTAL PETROLEUM CORP /DE/ - SC 13 D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No.

September 14, 2023 EX-99.AB

UNIT PURCHASE AGREEMENT

Exhibit AB Execution Version UNIT PURCHASE AGREEMENT This UNIT PURCHASE AGREEMENT (this “Agreement”), dated as of September 7, 2023, is entered into by and between Western Gas Resources, Inc.

August 9, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 9, 2023 OCCIDENTAL PETROLE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 9, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commissi

August 2, 2023 EX-99.1

Occidental Announces 2nd Quarter 2023 Results

PRESS RELEASE Occidental Announces 2nd Quarter 2023 Results •Strong operational performance drove cash flow from operations of $3.

August 2, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 2, 2023 OCCIDENTAL PETROLE

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 2, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commi

August 2, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM CORP

June 27, 2023 11-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 1-9210 A. Full title of the plan

June 20, 2023 SC 13D

NPWR / NET Power Inc - Class A / OCCIDENTAL PETROLEUM CORP /DE/ - SC 13D Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 NET Power Inc. (Name of Issuer) Class A common stock, par value $0.0001 (Title of Class of Securities) 64107A 105 (CUSIP Number) OLCV Net Power, LLC c/o Occidental Petroleum Corp. 5 Greenway Plaza, Suite 110 Houston, TX 77046 With copies to: A.J. Ericksen Emery Choi Scott

June 20, 2023 EX-7.1

Joint Filing Agreement

Exhibit 7.1 Joint Filing Agreement Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended, and the rules and regulations thereunder (the “Exchange Act”), the undersigned hereby agree to the joint filing on behalf of each of them of any filing required by such party under Section 13 of the Exchange Act or any rule or regulation thereunder (including any amendment, restat

May 11, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 5, 2023 OCCIDENTAL PETROLEUM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 5, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commission

May 9, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 9, 2023 OCCIDENTAL PETROLEUM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 9, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commissi

May 9, 2023 EX-99.1

Occidental Announces 1st Quarter 2023 Results

PRESS RELEASE Occidental Announces 1st Quarter 2023 Results •Strong operational performance drove cash flow from operations of $2.

May 9, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM COR

May 9, 2023 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K/A ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K/A ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2022 For the transition period from to Commission File Number 1-9210 Occidental Petroleum Corporati

April 19, 2023 PX14A6G

Notice Of Exempt Solicitation: (VOLUNTARY SUBMISSION)

Notice Of Exempt Solicitation: (VOLUNTARY SUBMISSION) NAME OF REGISTRANT: Occidental Petroleum Corp NAME OF PERSON RELYING ON EXEMPTION: Majority Action ADDRESS OF PERSON RELYING ON EXEMPTION: PO Box 4831, Silver Spring, MD 20914 Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934.

March 23, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ☑ Filed by the Registrant ☐ Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14

March 23, 2023 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ☑ Filed by the Registrant ☐ Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ☐ Preliminary Proxy Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defin

March 23, 2023 DEF 14A

DEFINITIVE PROXY STATEMENT

PROXY STATEMENT 2023OUR VISION OUR VALUES We will lead the industry by reaching for the impossible, then achieving it.

February 27, 2023 EX-10.26

(23) Form of Occidental Petroleum Corporation 2015 Long-Term Incentive Plan Total Shareholder Return Incentive Award (applicable to annual grants made in 2022 and 2023) (filed as Exhibit 10.26 to the Annual Report on Form 10-K of Occidental for the fiscal year ended December 31, 2022, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION 2015 LONG-TERM INCENTIVE PLAN as Amended and Restated NOTICE OF GRANT OF TOTAL SHAREHOLDER RETURN INCENTIVE AWARD (Equity-based and Equity-settled Award) Pursuant to the Occidental Petroleum Corporation 2015 Long-Term Incentive Plan, as the same may be amended from time to time (the “Plan”), Occidental Petroleum Corporation (“Occidental” and, with its Subsidiaries, the “Company”), grants you (the “Grantee”) an award on the terms and conditions set forth herein (the “Award”).

February 27, 2023 EX-10.1

Occidental Petroleum Corporation Savings Plan (Amended and Restated Effective as of January 1, 2023) (filed as Exhibit 10.1 to the Annual Report on Form 10-K of Occidental for the fiscal year ended December 31, 2022, File No. 1-9210).

Occidental Petroleum Corporation Savings Plan Amended and Restated Effective as of January 1, 2023 Article 1.

February 27, 2023 EX-10.5

(8) Occidental Petroleum Corporation Executive Incentive Compensation Plan (As Amended and Restated Effective January 1, 2023) (filed as Exhibit 10.5 to the Annual Report on Form 10-K of Occidental for the fiscal year ended December 31, 2022, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION EXECUTIVE INCENTIVE COMPENSATION PLAN (EICP) (As Amended and Restated Effective January 1, 2023) PURPOSE The Occidental Petroleum Corporation Executive Incentive Compensation Plan (the “Plan”) is designed to provide selected executives with annual cash incentive opportunities.

February 27, 2023 EX-99.1

Occidental Announces 4th Quarter 2022 Results

PRESS RELEASE Occidental Announces 4th Quarter 2022 Results •Announced enhanced shareholder return framework including a new $3.

February 27, 2023 EX-99.1

Ryder Scott Company Process Review of the Estimated Future Proved Reserves and Income Attributable to Certain Leasehold and Royalty Interests and Certain Economic Interests Derived Through Production Sharing Contracts as of December 31, 202

Exhibit 99.1 OCCIDENTAL PETROLEUM CORPORATION Process Review of the Estimated Future Proved Reserves and Income Attributable to Certain Leasehold and Royalty Interests and Certain Economic Interests Derived Through Production Sharing Agreement OXY PROPERTIES SEC Parameters As of December 31, 2022 /s/ Guale Ramirez Guale Ramirez, P.E. TBPELS License No. 48318 President [SEAL] RYDER SCOTT COMPANY, L

February 27, 2023 EX-21

K of Occidental for the fiscal year ended December 31, 2022, File No. 1-9210)

Exhibit 21 LIST OF SUBSIDIARIES The following is a list of the Registrant’s subsidiaries at December 31, 2022.

February 27, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Ac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2022 For the transition period from to Commission File Number 1-9210 Occidental Petroleum Corporation

February 27, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 27, 2023 OCCIDENTAL PETR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 27, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Co

February 22, 2023 EX-99.1

Ken Robinson Elected to Occidental Board of Directors

Exhibit 99.1 PRESS RELEASE Ken Robinson Elected to Occidental Board of Directors HOUSTON — February 22, 2023 — Occidental (NYSE:OXY) announced today that Ken Robinson, who currently serves on the Boards of Directors for Abercrombie & Fitch, Paylocity and Morgan Stanley U.S. Banks, and formerly served as Senior Vice President of Audit and Controls at Exelon Corporation, has been elected to its Boar

February 22, 2023 EX-10.1

Occidental Petroleum Corporation Retirement Policy (filed as Exhibit 10.1 to the Current Report on Form 8-K of Occidental filed on February 22, 2023, File No. 1-9210).

Exhibit 10.1 OCCIDENTAL PETROLEUM CORPORATION RETIREMENT POLICY Purpose The Compensation Committee (the “Committee”) of the Board of Directors (the “Board”) of Occidental Petroleum Corporation (the “Company”) has adopted this Retirement Policy (as the same may be amended from time to time, this “Policy”) effective as the Effective Date set forth above. This Policy is designed to establish general

February 22, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 15, 2023 OCCIDENTAL PETR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 15, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commi

February 14, 2023 SC 13G/A

OXY / Occidental Petroleum Corporation / BERKSHIRE HATHAWAY INC - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO § 240.

February 14, 2023 SC 13G/A

OXY / Occidental Petroleum Corporation / DODGE & COX - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 4)* OCCIDENTAL PETROLEUM CORPORATION (Name of Issuer) Common Stock and Warrants (Title of Class of Securities) 674599105 (CUSIP Number) December 31, 2022 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate

February 9, 2023 SC 13G/A

OXY / Occidental Petroleum Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SC 13G/A 1 tv0093-occidentalpetroleumco.htm SCHEDULE 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 10)* Name of issuer: Occidental Petroleum Corp. Title of Class of Securities: Common Stock CUSIP Number: 674599105 Date of Event Which Requires Filing of this Statement: December 30, 2022 Check the appropriate bo

January 20, 2023 8-K

(State or Other Jurisdiction of Incorporation)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 17, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

January 20, 2023 EX-99.1

Claire O'Neill Elected to Occidental Board of Directors

Exhibit 99.1 PRESS RELEASE Claire O'Neill Elected to Occidental Board of Directors HOUSTON — January 20, 2023 — Occidental (NYSE:OXY) announced today that Claire O'Neill, former Member of Parliament and Minister for Energy and Clean Growth in the UK Government, and a former Managing Director, Climate and Energy of the World Business Council for Sustainable Development (WBCSD), has been elected to

January 4, 2023 8-K

Regulation FD Disclosure, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): January 4, 2023 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commiss

November 8, 2022 EX-10.2

Occidental Petroleum Corporation 2015 Long-Term Incentive Plan Form of Notice of Grant of Restricted Stock Unit Incentive Award (for awards to Chief Legal Officer) (filed as Exhibit 10.2 to the Quarterly Report on Form 10-Q of Occidental for the quarterly period ended September 30, 2022).

OCCIDENTAL PETROLEUM CORPORATION 2015 LONG-TERM INCENTIVE PLAN as Amended and Restated NOTICE OF GRANT OF RESTRICTED STOCK UNIT INCENTIVE AWARD (Time-based Vesting; Equity-settled Award; Section 16 Officers) Pursuant to the Occidental Petroleum Corporation 2015 Long-Term Incentive Plan, as the same may be amended from time to time (the “Plan”), Occidental Petroleum Corporation (“Occidental” and, with its Subsidiaries, the “Company”) grants you (the “Grantee”) an award on the terms and conditions set forth herein (the “Award”).

November 8, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 8, 2022 OCCIDENTAL PETRO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 8, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Com

November 8, 2022 EX-10.3

Transition Services and Separation Agreement by and between Occidental Petroleum Corporation and Marcia E. Backus dated September 29, 2022 (filed as Exhibit 10.3 to the Quarterly Report on Form 10-Q of Occidental for the quarterly period ended September 30, 2022).

TRANSITION SERVICES AND SEPARATION AGREEMENT THIS TRANSITION SERVICES AND SEPARATION AGREEMENT (“Agreement”) is entered into as of the Effective Date (as defined in Paragraph 1) by and between Occidental Petroleum Corporation, a Delaware corporation (“Employer”), and Marcia E.

November 8, 2022 EX-99.1

Occidental Announces 3rd Quarter 2022 Results

PRESS RELEASE Occidental Announces 3rd Quarter 2022 Results •Repaid $1.3 billion of debt during the third quarter, with year-to-date repayments of $9.6 billion through November 7, 2022, representing 34% reduction of total outstanding principal •Repurchased over 28.4 million shares for $1.8 billion during the third quarter, with year-to-date repurchases of 41.8 million shares for $2.6 billion throu

November 8, 2022 EX-10.1

Letter Agreement by and between Occidental Petroleum Corporation and Sylvia J. Kerrigan dated September 14, 2022 (filed as Exhibit 10.1 to the Quarterly Report on Form 10-Q of Occidental for the quarterly period ended September 30, 2022).

Vicki A Hollub President and Chief Executive Officer PERSONAL AND CONFIDENTIAL September 14, 2022 Ms.

November 8, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM

September 30, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): September 29, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (C

September 9, 2022 SC 13G/A

OXY / Occidental Petroleum Corporation / BERKSHIRE HATHAWAY INC - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.

August 2, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM CORP

August 2, 2022 EX-99.1

Occidental Announces 2nd Quarter 2022 Results

PRESS RELEASE Occidental Announces 2nd Quarter 2022 Results •Repaid $4.8 billion of debt, representing 19% of total outstanding principal •Repurchased over 18 million shares for approximately $1.1 billion through August 1, 2022 •Earnings per diluted share of $3.47 and adjusted earnings per diluted share of $3.16 •Cash flow from continuing operations of $5.3 billion and cash flow from continuing op

August 2, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 2, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commi

July 29, 2022 EX-25.1

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of The Bank of New York Mellon Trust Company, N.A., as Trustee with respect to the Indenture dated as of August 8, 2019.

Exhibit 25.1 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PUR

July 29, 2022 EX-25.2

Form T-1 Statement of Eligibility under the Trust Indenture Act of 1939, as amended, of The Bank of New York Mellon Trust Company, N.A., as Trustee with respect to the form of Indenture (Subordinated Debt Securities).

Exhibit 25.2 = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PUR

July 29, 2022 S-3ASR

As Filed with the Securities and Exchange Commission on July 29, 2022

TABLE OF CONTENTS As Filed with the Securities and Exchange Commission on July 29, 2022 Registration No.

July 29, 2022 EX-FILING FEES

Filing Fee Table.

EX-FILING FEES 7 ny20004855x1ex107-1.htm FILING FEES TABLE Exhibit 107.1 Calculation of Filing Fee Tables Form S-3 (Form Type) Occidental Petroleum Corporation (Exact Name of Registrant as Specified in Its Charter) Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Uni

July 26, 2022 EX-99.AA

UNIT PURCHASE AGREEMENT

Exhibit AA Execution Version UNIT PURCHASE AGREEMENT This UNIT PURCHASE AGREEMENT (this ?Agreement?), dated as of July 17, 2022, is entered into by and between WGR Asset Holding Company LLC, a Delaware limited liability company (?WGRAH?), and Western Midstream Partners, LP, a Delaware limited partnership (?WES?).

July 26, 2022 SC 13D/A

WES / Western Midstream Partners LP / OCCIDENTAL PETROLEUM CORP /DE/ - SC 13DA Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No.

June 28, 2022 11-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K

United States SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 11-K (Mark One) [X] ANNUAL REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR [ ] TRANSITION REPORT PURSUANT TO SECTION 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number: 1-9210 A. Full title of the plan

May 16, 2022 EX-99.1

Occidental Announces Cash Tender Offers for Certain of its Senior Notes

Exhibit 99.1 PRESS RELEASE Occidental Announces Cash Tender Offers for Certain of its Senior Notes HOUSTON ? May 16, 2022 ? Occidental (NYSE: OXY) today announced that it has commenced cash tender offers (each, an ?Offer? and collectively, the ?Offers?) to purchase its outstanding notes listed in the tables below (the ?Notes,? and each, a ?Series? of Notes) in three separate pools (each, a ?Pool?)

May 16, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 16, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commis

May 11, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 6, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commiss

May 10, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): May 10, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commiss

May 10, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 ☐ TRANSITION REPORT PURSUANT TO

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM COR

May 10, 2022 EX-99.1

Occidental Announces 1st Quarter 2022 Results

PRESS RELEASE Occidental Announces 1st Quarter 2022 Results ?Repaid $3.3 billion of debt, representing 12% of total outstanding principal ?Earnings per diluted share of $4.65 and adjusted earnings per diluted share of $2.12 ?Cash flow from continuing operations of $3.2 billion and cash flow from continuing operations before working capital of $4.2 billion ?Capital spending of $858 million, resulti

May 6, 2022 SC 13G/A

OXY / Occidental Petroleum Corporation / BERKSHIRE HATHAWAY INC - SC 13G/A Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.

May 3, 2022 PX14A6G

Notice of Exempt Solicitation

Notice of Exempt Solicitation Registrant: Occidental Petroleum Name of Person Relying on the Exemption: Follow This Address of Person Relying on Exemption: Anthony Fokkerweg 61 1059 CP Amsterdam The Netherlands Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934 Submission is not required of the filer under the terms of the Rule but is made voluntary Summary Occidental claims to be Paris-aligned and that the Proposal seeks to fundamentally change its strategy.

April 29, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? Filed by the Registrant ? Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

April 20, 2022 PX14A6G

Notice of Exempt Solicitation

Notice of Exempt Solicitation Registrant: Occidental Petroleum Name of Person Relying on the Exemption: Follow This Address of Person Relying on Exemption: Anthony Fokkerweg 61 1059 CP Amsterdam The Netherlands Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934 Submission is not required of the filer under the terms of the Rule but is made voluntary April 20, 2022 Dear Occidental Petroleum Shareholders, We are writing to urge you to VOTE ?FOR? Item 4 on the proxy card, asking the Company to adopt medium- and long-term greenhouse gas reduction targets.

April 18, 2022 PX14A6G

Notice Of Exempt Solicitation: (VOLUNTARY SUBMISSION)

Notice Of Exempt Solicitation: (VOLUNTARY SUBMISSION) NAME OF REGISTRANT: Occidental Petroleum NAME OF PERSON RELYING ON EXEMPTION: Majority Action ADDRESS OF PERSON RELYING ON EXEMPTION: PO Box 4831, Silver Spring, MD 20914 Written materials are submitted pursuant to Rule 14a-6(g)(1) promulgated under the Securities Exchange Act of 1934.

April 7, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? Filed by the Registrant ? Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

March 25, 2022 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? Filed by the Registrant ? Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ? Defin

March 25, 2022 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) ? Filed by the Registrant ? Filed by a party other than the Registrant CHECK THE APPROPRIATE BOX: ? Preliminary Proxy Statement ? Confidential, for Use of the Commission Only (as permitted by Rule 14

March 25, 2022 DEF 14A

DEFINITIVE PROXY STATEMENT

March 23, 2022 8-K

Regulation FD Disclosure, Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 17, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdictionof Incorporation) (Commissio

March 23, 2022 EX-99.1

Vicky A. Bailey Elected to Occidental Board of Directors

Exhibit 99.1 PRESS RELEASE Vicky A. Bailey Elected to Occidental Board of Directors HOUSTON ? March 23, 2022 ? Occidental (NYSE: OXY) announced today that Vicky A. Bailey, President of Anderson Stratton International, LLC (ASI) and a former equity partner of BHMM Energy Services, LLC, has been elected to its Board of Directors, effective March 22, 2022. Ms. Bailey has more than 35 years of experie

March 7, 2022 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): March 7, 2022 (March 4, 2022) OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in Charter) Delaware 1-09210 95-4035997 (State or Other Jurisdiction of Incorpora

March 4, 2022 EX-99.A

SCHEDULE 13G RELEVANT SUBSIDIARIES AND MEMBERS OF FILING GROUP

SCHEDULE 13G EXHIBIT A RELEVANT SUBSIDIARIES AND MEMBERS OF FILING GROUP PARENT HOLDING COMPANIES OR CONTROL PERSONS: Warren E.

March 4, 2022 EX-99.B

SCHEDULE 13G JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1) AND POWER OF ATTORNEY

SCHEDULE 13G EXHIBIT B JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1) AND POWER OF ATTORNEY The undersigned persons hereby agree that reports on Schedule 13G, and amendments thereto, with respect to the Common Stock of U.

March 4, 2022 SC 13G

OXY / Occidental Petroleum Corporation / BERKSHIRE HATHAWAY INC - SC 13G Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 SCHEDULE 13G (Rule 13d-102) INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT TO ? 240.

March 2, 2022 SC 13D/A

OXY / Occidental Petroleum Corporation / ICAHN CARL C - AMENDMENT NO. 9 TO SCHEDULE 13D Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 9)* Occidental Petroleum Corporation (Name of Issuer) Common Stock, par value $0.20 per share (Title of Class of Securities) 674599105 (CUSIP Number) Jesse Lynn Chief Operating Officer Icahn Capital LP 16690 Collins Avenue Sunny Isles Beach, FL 33160 (305) 422-4100 (Name,

February 28, 2022 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 28, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Co

February 28, 2022 EX-99.1

Occidental Announces Cash Tender Offers for Certain of its Senior Notes

EX-99.1 2 brhc10034551ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 PRESS RELEASE Occidental Announces Cash Tender Offers for Certain of its Senior Notes HOUSTON — February 28, 2022 — Occidental (NYSE: OXY) today announced that it has commenced cash tender offers (each, an “Offer” and collectively, the “Offers”) to purchase its outstanding notes listed in the tables below (the “Notes,” and each, a “Series”

February 24, 2022 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ☑ Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Ac

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 10-K ? Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 ? Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 For the fiscal year ended December 31, 2021 For the transition period from to Commission File Number 1-9210 Occidental Petroleum Corporation

February 24, 2022 EX-21

List of subsidiaries of Occidental a

Exhibit 21 LIST OF SUBSIDIARIES The following is a list of the Registrant?s subsidiaries at December 31, 2021.

February 24, 2022 EX-10.14

Anadarko Retirement Restoration Plan (As Amended and Restated Effective as of December 31, 2021) (filed as Exhibit 10.14 to the Annual Report on Form 10-K of Occidental for the fiscal year ended December 31, 2021, File No. 1-9210).

ANADARKO RETIREMENT RESTORATION PLAN (As Amended and Restated Effective as of December 31, 2021) TABLE OF CONTENTS Page ARTICLE I PURPOSES OF THE PLAN 1 ARTICLE II DEFINITIONS 2 2.

February 24, 2022 EX-10.1

Occidental Petroleum Corporation Savings Plan (Amended and Restated Effective as of January 1, 202

Occidental Petroleum Corporation Savings Plan Amended and Restated Effective as of January 1, 2022 Article 1.

February 24, 2022 EX-10.2

Occidental Petroleum Corporation 2015 Long-Term Incentive Plan Form of Notice of Grant of Restricted Stock Unit Incentive Award (filed as Exhibit 10.2 to the Annual Report on Form 10-K of Occidental for the fiscal year ended December 31, 2021, File No. 1-9210).

OCCIDENTAL PETROLEUM CORPORATION 2015 LONG-TERM INCENTIVE PLAN NOTICE OF GRANT OF RESTRICTED STOCK UNIT INCENTIVE AWARD (Time-based Vesting; Equity-settled Award; Section 16 Officers) Pursuant to the Occidental Petroleum Corporation 2015 Long-Term Incentive Plan, as the same may be amended from time to time (the ?Plan?), Occidental Petroleum Corporation (?Occidental? and, with its Subsidiaries, the ?Company?) grants you (the ?Grantee?) an award on the terms and conditions set forth herein (the ?Award?).

February 24, 2022 EX-99.1

Occidental Announces 4th Quarter 2021 Results

PRESS RELEASE Occidental Announces 4th Quarter 2021 Results ?Announced new shareholder return framework and additional debt reduction target ?Earnings per share of $1.

February 24, 2022 EX-99.1

Ryder Scott Company Process Review of the Estimated Future Proved Reserves and Income Attributable to Certain

Exhibit 99.1 OCCIDENTAL PETROLEUM CORPORATION Process Review of the Estimated Future Proved Reserves and Income Attributable to Certain Leasehold and Royalty Interests and Certain Economic Interests Derived Through Production Sharing Contracts OXY PROPERTIES SEC Parameters As of December 31, 2021 /s/ Guale Ramirez Guale Ramirez, P.E. TBPELS License No. 48318 President [SEAL] RYDER SCOTT COMPANY, L

February 24, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): February 24, 2022 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Co

February 14, 2022 SC 13G/A

OXY / Occidental Petroleum Corporation / DODGE & COX - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT NO. 3)* OCCIDENTAL PETROLEUM CORPORATION (Name of Issuer) Common Stock (Title of Class of Securities) 674599105 (CUSIP Number) December 31, 2021 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule purs

February 9, 2022 SC 13G/A

OXY / Occidental Petroleum Corporation / VANGUARD GROUP INC - SCHEDULE 13G/A Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Schedule 13G Under the Securities Exchange Act of 1934 (Amendment No.: 9)* Name of issuer: Occidental Petroleum Corp. Title of Class of Securities: Common Stock CUSIP Number: 674599105 Date of Event Which Requires Filing of this Statement: December 31, 2021 Check the appropriate box to designate the rule pursuant to which this Schedule is f

December 20, 2021 SC 13D/A

WES / Western Midstream Partners LP / OCCIDENTAL PETROLEUM CORP /DE/ - SC 13D/A Activist Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, DC 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No.

December 20, 2021 EX-99.Y

Amended and Restated Joint Filing Statement

EXHIBIT Y Amended and Restated Joint Filing Statement We, the undersigned, hereby express our agreement that the attached Schedule 13D is, and any further amendments thereto signed by each of the undersigned shall be, filed on behalf of each of us pursuant to and in accordance with the provisions of Rule 13d-1(k) under the Securities Exchange Act of 1934.

December 20, 2021 EX-99.Z

Exhibit Z

Exhibit Z Execution Version UNIT PURCHASE AGREEMENT This UNIT PURCHASE AGREEMENT (this ?Agreement?), dated as of December 7, 2021, is entered into by and between WGR Asset Holding Company LLC, a Delaware limited liability company (?WGRAH?), and Western Midstream Partners, LP, a Delaware limited partnership (?WES?).

December 13, 2021 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 10, 2021 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 1-9210 (Commission Fi

December 13, 2021 EX-10.1

Second Amended and Restated Credit Agreement, dated as of December 10, 2021, by and among Occidental Petroleum Corporation, the banks party thereto, as lenders, and JPMorgan Chase Bank, N.A., as administrative agent (filed as Exhibit 10.1 to the Current Report on Form 8-K of Occidental filed on December 13, 2021, File No. 1-9210).

Exhibit 10.1 Execution Version OCCIDENTAL PETROLEUM CORPORATION SECOND AMENDED AND RESTATED CREDIT AGREEMENT Dated as of December 10, 2021 $4,000,000,000 JPMORGAN CHASE BANK, N.A., BOFA SECURITIES, INC., CITIBANK, N.A., HSBC SECURITIES (USA) INC., MUFG BANK, LTD, RBC CAPITAL MARKETS, SOCIETE GENERALE, SUMITOMO MITSUI BANKING CORPORATION, TD SECURITIES (USA) LLC, and WELLS FARGO SECURITIES, LLC, as

December 2, 2021 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): December 2, 2021 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware (State or Other Jurisdiction of Incorporation) 1-9210 (Commission Fil

December 2, 2021 EX-99.1

Occidental Announces Cash Tender Offers Any and All of Certain of its Senior Notes for Up To $2.0 Billion Aggregate Purchase Price

Exhibit 99.1 Occidental Announces Cash Tender Offers Any and All of Certain of its Senior Notes for Up To $2.0 Billion Aggregate Purchase Price HOUSTON ? December 2, 2021 ? Occidental (NYSE: OXY) today announced that it has commenced cash tender offers (each, an ?Offer? and collectively, the ?Offers?) to purchase up to a maximum combined aggregate purchase price of $2.0 billion, including principa

November 4, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPORT PURSUANT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM

November 4, 2021 EX-99.1

Occidental Announces 3rd Quarter 2021 Results

Occidental Announces 3rd Quarter 2021 Results ?Cash flow from continuing operations of $2.

November 4, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): November 4, 2021 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Com

September 20, 2021 8-K

Regulation FD Disclosure

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): September 20, 2021 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (C

September 8, 2021 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): September 8, 2021 OCCIDENTAL PETR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): September 8, 2021 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Co

August 6, 2021 SC 13D/A

OXY / Occidental Petroleum Corporation / ICAHN CARL C Activist Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 8)* Occidental Petroleum Corporation (Name of Issuer) Common Stock, par value $0.20 per share (Title of Class of Securities) 674599105 (CUSIP Number) Jesse Lynn Icahn Capital LP 16690 Collins Avenue Sunny Isles Beach, FL 33160 (305) 422-4100 (Name, Address and Telephone N

August 3, 2021 EX-99.1

Occidental Announces 2nd Quarter 2021 Results

Occidental Announces 2nd Quarter 2021 Results ?Cash flow from continuing operations of $3.

August 3, 2021 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ☐ TRANSITION REPORT PURSUANT TO S

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-9210 OCCIDENTAL PETROLEUM CORP

August 3, 2021 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of Earliest Event Reported): August 3, 2021 OCCIDENTAL PETROLEUM CORPORATION (Exact Name of Registrant as Specified in its Charter) Delaware 1-9210 95-4035997 (State or Other Jurisdiction of Incorporation) (Commi

July 15, 2021 EX-99.1

Occidental Announces Early Tender Results of and Upsize in Cash Tender Offers and Consent Solicitations for Certain of its Senior Notes

Exhibit 99.1 Occidental Announces Early Tender Results of and Upsize in Cash Tender Offers and Consent Solicitations for Certain of its Senior Notes HOUSTON ? July 14, 2021 ? Occidental (NYSE: OXY) today announced the early tender results of its offers to purchase for cash (collectively, the ?Tender Offers? and each a ?Tender Offer?) its outstanding 2.700% Senior Notes due 2022 (the ?2.700% 2022 N

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