Sec Form 4 Filing - OCCIDENTAL PETROLEUM CORP /DE/ @ Western Midstream Partners, LP - 2019-12-31

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) 12/31/2019 (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) 12/31/2019 D( 1 ) 9,060,641 D $ 0 ( 1 ) 242,136,976 ( 1 ) 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 Occidental Permian Ltd. 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX77046 X Baseball Merger Sub 2, Inc. 5 GREENWAY PLAZA, SUITE 110 HOUSTON, TX77046 X Signatures /s/ Nicole E. Clark of OCCIDENTAL PETROLEUM CORP /DE/ 01/03/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of OXY USA INC 01/03/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of Occidental Permian Manager LLC. 01/03/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of OXY Oil Partners, Inc. 01/03/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of Occidental Permian Ltd., by its General Partner, Occidental Permian Manager LLC 01/03/2020 Signature of Reporting Person Date /s/ Nicole E. Clark of Baseball Merger Sub 2, Inc. 01/03/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On December 31, 2019, the Issuer entered into a partnership interests exchange agreement with Western Gas Resources, Inc. ("WGR") and Western Midstream Holdings, LLC (the "General Partner"), pursuant to which the Issuer cancelled the non-economic general partner interest in the Issuer held by the General Partner and simultaneously issued 9,060,641 general partner units representing a 2.0% economic general partner interest in the Issuer to the General Partner, in exchange for which WGR transferred 9,060,641 Common Units (the "Consideration Units") equal to 2.0% of all issued and outstanding Common Units to the General Partner, and the General Partner then transferred the Consideration Units to the Issuer, which the Issuer cancelled immediately upon receipt. ( 2 )Following the transaction reported herein, 161,319,520 Common Units are held by WGR, 24,771,550 Common Units are held by APC Midstream Holdings, LLC ("AMH"), 38,139,260 Common Units are held by WGR Asset Holding Company LLC ("WGRAH"), 684,922 Common Units are held by Kerr-McGee Worldwide Corporation ("KWC") and 17,221,724 Common Units are held by Anadarko E&P Onshore LLC ("AE&P"). ( 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 is the limited partner of Occidental Permian Ltd. ("OPL") holding 98% of its partnership interests. OPM is the general partner of OPL, owning 2% of its outstanding partnership interests. OPL owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. ("BMS"). ( 4 )Anadarko Petroleum Corporation ("Anadarko") is a wholly owned subsidiary of BMS. Anadarko owns (i) 100% of Anadarko Holding Company ("AHC"), (ii) directly and indirectly, 100% of the common stock of WGR and Kerr-McGee Corporation ("KMG"), and (iii) indirectly, 100% of the outstanding membership interests in Anadarko Consolidated Holdings LLC ("ACH"). WGR is the sole member of AMH, which is the sole member of WGRAH. KMG and AHC together own 100% of the common stock of KWC. ACH is the sole member of AE&P. Accordingly, Oxy USA, OPM, OOP, OPL, BMS, Anadarko, WGR, AMH, WGRAH, KWC and AE&P 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 Anadarko, WGR, AMH, WGRAH, KWC 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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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