Sec Form 4 Filing - OCCIDENTAL PETROLEUM CORP /DE/ @ Western Midstream Partners, LP - 2020-09-11

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person OCCIDENTAL PETROLEUM CORP /DE/ 2. Issuer Name and Ticker or Trading Symbol Western Midstream Partners, LP [ WES] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 5 GREENWAY PLAZA, SUITE 110 3. Date of Earliest Transaction (MM/DD/YY) 09/11/2020 (Street) HOUSTON, TX77046 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price COMMON UNITS (LIMITED PARTNER INTERESTS) 09/11/2020 D( 1 ) 27,855,398 D $ 0 ( 1 ) 214,281,578 I See Footnotes ( 2 ) ( 3 ) ( 4 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other OCCIDENTAL PETROLEUM CORP /DE/ 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX77046 X OXY USA INC 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX77046 X Occidental Permian Manager LLC 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX77046 X OXY Oil Partners, Inc. 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX77046 X Baseball Merger Sub 2, Inc. 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX77046 X ANADARKO PETROLEUM CORP 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX77046 X Signatures /s/ Nicole E. Clark of Occidental Petroleum Corporation 09/15/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of Oxy USA Inc. 09/15/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of Occidental Permian Manager LLC 09/15/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of OXY Oil Partners, Inc. 09/15/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of New OPL LLC 09/15/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of Baseball Merger Sub 2, Inc. 09/15/2020 Signature of Reporting Person Date /s/ Gina Karathanos of Anadarko Petroleum Corporation 09/15/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of Anadarko Holding Company 09/15/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On September 11, 2020, the Issuer entered into a unit redemption agreement with Anadarko Petroleum Corporation ("APC"), pursuant to which the Issuer redeemed and canceled 27,855,398 Common Units (the "Subject Units"), in exchange for the Issuer transferring and assigning its pro rata portion of a 30-year note bearing interest at a fixed annual rate of 6.50% owed by APC to the Issuer (the "APC Note"), with APC canceling and retiring such portion of the APC Note and the principal and accrued interest owed thereunder. In connection with the foregoing transaction: (i) Anadarko E&P Onshore LLC, ("AE&P") transferred 17,221,724 Common Units to Anadarko USH1 Corporation ("Anadarko USH1"), (ii) APC acquired 24,313,701 Common Units from APC Midstream Holdings, LLC ("APCMH"), 684,922 Common Units from Kerr-McGee Worldwide Corporation ("KMWW"), and 2,856,775 Common Units from Anadarko USH1. ( 2 )Following the transaction reported herein, Western Gas Resources, Inc. ("WGR") holds 170,380,161 Common Units, WGR Asset Holding Company LLC ("WGRAH") holds 38,139,260 Common Units, APCMH holds 457,849 Common Units and Anadarko USH1 holds 14,365,949 Common Units. Neither AE&P nor KMWW directly hold any Common Units following the transaction reported herein. ( 3 )Oxy USA Inc. ("Oxy USA") is a wholly owned subsidiary of Occidental Petroleum Corporation ("Occidental"). Oxy USA owns 100% of the outstanding membership interests of Occidental Permian Manager LLC ("OPM") and 100% of the common stock of OXY Oil Partners, Inc. ("OOP"). OOP, OPM and Oxy USA together own 100% of the membership interests of New OPL, LLC ("OPL"). OPL owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. ("BMS"). ( 4 )APC is a wholly owned subsidiary of BMS. APC owns (i) 100% of Anadarko Holding Company ("AHC") and (ii) indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation ("KMG"). WGR is the sole member of APCMH, and APCMH is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of KMWW, and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1. Accordingly, Oxy USA, OPM, OOP, OPL, BMS, APC, AHC, WGR, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental.

Remarks: Due to the limitations of the U.S. Securities and Exchange Commission's electronic filing system, each of WGR, Anadarko USH1, KMG, ACH, APCMH, KMWW and AE&P are concurrently filing a Form 4 to report the transactions disclosed herein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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