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[Form 4] Western Midstream Partners, LP Insider Trading Activity

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Western Midstream Partners (WES) reported that Western Gas Resources, Inc. transferred and surrendered 15,307,402 common units representing limited partner interests to the partnership on February 3, 2026 under a Unit Redemption Agreement tied to amendments of operating agreements.

Following this redemption, Western Gas Resources, Inc. holds 140,912,118 common units, APC Midstream Holdings, LLC holds 457,849 common units and Anadarko USH1 Corporation holds 9,004,209 common units.

The filing explains that these entities, along with several Anadarko and OXY subsidiaries, are all direct or indirect wholly owned subsidiaries of Occidental Petroleum Corporation, which remains a 10% owner of WES through this ownership chain.

Positive

  • None.

Negative

  • None.

Insights

Large WES unit block redeemed from an Occidental affiliate, reshaping but not exiting its ownership stake.

The filing shows Western Gas Resources, Inc., an Occidental-controlled entity, surrendered 15,307,402 Western Midstream common units to the issuer under a Unit Redemption Agreement. The transaction is coded "J", indicating a non-open-market change in beneficial ownership rather than a typical sale.

After the redemption, Western Gas Resources, Inc. still holds 140,912,118 common units, while APC Midstream Holdings, LLC and Anadarko USH1 Corporation hold 457,849 and 9,004,209 units, respectively. The detailed subsidiary chain confirms all of these are wholly owned, directly or indirectly, by Occidental Petroleum Corporation, so Occidental maintains a substantial 10%‑owner position in WES.

The net economic effect for WES unitholders depends on how this issuer-level redemption interacts with amended operating agreements referenced in the Unit Redemption Agreement. Subsequent disclosures from Western Midstream or Occidental may clarify governance, distribution, or control implications tied to this internal ownership realignment.

Insider OCCIDENTAL PETROLEUM CORP /DE/, OXY USA INC, OXY Oil Partners, Inc., Baseball Merger Sub 2, Inc., ANADARKO PETROLEUM CORP, ANADARKO HOLDING Co
Role 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner
Type Security Shares Price Value
Other COMMON UNITS (LIMITED PARTNER INTERESTS) 15,307,402 $0.00 --
Holdings After Transaction: COMMON UNITS (LIMITED PARTNER INTERESTS) — 150,374,176 shares (Indirect, See Footnotes)
Footnotes (1)
  1. On January 16, 2026, Western Gas Resources, Inc. ("WGRI") entered into a Unit Redemption Agreement with the Issuer and the other parties thereto, pursuant to which WGRI transferred and surrendered on February 3, 2026 an aggregate of 15,307,402 common units representing limited partner interests in the Issuer (the "Common Units") to the Issuer in connection with certain amendments to existing operating agreements, as described in the Unit Redemption Agreement. Following the transaction reported herein, WGRI holds 140,912,118 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and Anadarko USH1 Corporation ("AUSHI") holds 9,004,209 Common Units. WGRI also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer. OXY USA Inc. ("OXY USA") is a wholly owned subsidiary of Occidental Petroleum Corporation ("Occidental"). OXY USA owns 100% of the outstanding common stock of OXY Oil Partners, Inc. ("OOP"). OOP owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. ("BMS"). Anadarko Petroleum Corporation ("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 WGRI and Kerr-McGee Corporation ("KMG"). WGRI is the sole member of APCMH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation ("KMWW"), and APC and KMWW together indirectly own 100% of the common stock of AUSH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGRI, AUSH1, KMG, APCMH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental.
Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4 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
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
OCCIDENTAL PETROLEUM CORP /DE/
(Last) (First) (Middle)
5 GREENWAY PLAZA
SUITE 110
(Street)
HOUSTON TX 77046
(City) (State) (Zip)
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)
3. Date of Earliest Transaction (Month/Day/Year)
02/03/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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) 02/03/2026 J(1) 15,307,402 D (1) 150,374,176 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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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 (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (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: 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
1. Name and Address of Reporting Person*
OCCIDENTAL PETROLEUM CORP /DE/
(Last) (First) (Middle)
5 GREENWAY PLAZA
SUITE 110
(Street)
HOUSTON TX 77046
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
OXY USA INC
(Last) (First) (Middle)
5 GREENWAY PLAZA
SUITE 110
(Street)
HOUSTON TX 77046
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
OXY Oil Partners, Inc.
(Last) (First) (Middle)
5 GREENWAY PLAZA
SUITE 110
(Street)
HOUSTON TX 77046
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Baseball Merger Sub 2, Inc.
(Last) (First) (Middle)
5 GREENWAY PLAZA
SUITE 110
(Street)
HOUSTON TX 77046
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
ANADARKO PETROLEUM CORP
(Last) (First) (Middle)
5 GREENWAY PLAZA
SUITE 110
(Street)
HOUSTON TX 77046
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
ANADARKO HOLDING Co
(Last) (First) (Middle)
5 GREENWAY PLAZA
SUITE 110
(Street)
HOUSTON TX 77046
(City) (State) (Zip)
Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. On January 16, 2026, Western Gas Resources, Inc. ("WGRI") entered into a Unit Redemption Agreement with the Issuer and the other parties thereto, pursuant to which WGRI transferred and surrendered on February 3, 2026 an aggregate of 15,307,402 common units representing limited partner interests in the Issuer (the "Common Units") to the Issuer in connection with certain amendments to existing operating agreements, as described in the Unit Redemption Agreement.
2. Following the transaction reported herein, WGRI holds 140,912,118 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and Anadarko USH1 Corporation ("AUSHI") holds 9,004,209 Common Units. WGRI also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer.
3. OXY USA Inc. ("OXY USA") is a wholly owned subsidiary of Occidental Petroleum Corporation ("Occidental"). OXY USA owns 100% of the outstanding common stock of OXY Oil Partners, Inc. ("OOP"). OOP owns 100% of the outstanding common stock of Baseball Merger Sub 2, Inc. ("BMS").
4. Anadarko Petroleum Corporation ("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 WGRI and Kerr-McGee Corporation ("KMG"). WGRI is the sole member of APCMH. KMG and AHC together own 100% of the common stock of Kerr-McGee Worldwide Corporation ("KMWW"), and APC and KMWW together indirectly own 100% of the common stock of AUSH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGRI, AUSH1, KMG, APCMH 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 WGRI, Anadarko USH1, KMG, APCMH, and KMWW are concurrently filing a Form 4 to report the transaction disclosed herein.
/s/ Nicole E. Clark of OXY USA Inc. 02/05/2026
/s/ Nicole E. Clark of OXY Oil Partners, Inc. 02/05/2026
/s/ Nicole E. Clark of Baseball Merger Sub 2, Inc. 02/05/2026
/s/ Nicole E. Clark of Anadarko Petroleum Corporation 02/05/2026
/s/ Nicole E. Clark of Anadarko Holding Company 02/05/2026
/s/ Nicole E. Clark of Occidental Petroleum Corporation 02/05/2026
** Signature of Reporting Person Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

How many WES common units does Western Gas Resources, Inc. hold after this Form 4 transaction?

After the reported transaction, Western Gas Resources, Inc. holds 140,912,118 Western Midstream Partners (WES) common units. This follows the surrender of 15,307,402 common units back to the issuer under a Unit Redemption Agreement dated January 16, 2026 and settled February 3, 2026.

Which other entities hold WES units after the reported Occidental-affiliate redemption?

Following the transaction, APC Midstream Holdings, LLC holds 457,849 Western Midstream Partners (WES) common units and Anadarko USH1 Corporation holds 9,004,209 common units. These holdings are listed alongside Western Gas Resources, Inc.’s remaining 140,912,118 units in the Form 4 footnotes.

What is the relationship between Occidental Petroleum and Western Midstream Partners (WES) in this filing?

The filing explains that OXY USA, OXY Oil Partners, Baseball Merger Sub 2, Anadarko Petroleum, Anadarko Holding, Western Gas Resources, APC Midstream, Anadarko USH1 and others are all wholly owned, directly or indirectly, by Occidental Petroleum, making Occidental an indirect 10% owner of Western Midstream Partners (WES).

What agreement triggered the 15,307,402-unit transfer in Western Midstream Partners?

The 15,307,402 Western Midstream Partners (WES) common unit transfer arose from a Unit Redemption Agreement dated January 16, 2026. Under this agreement, Western Gas Resources, Inc. surrendered units to the issuer on February 3, 2026 in connection with amendments to existing operating agreements.

Was the 15,307,402-unit WES transaction an open market trade?

No. The Form 4 codes the 15,307,402-unit transaction as "J," which denotes a non-open-market change in beneficial ownership. Units were transferred and surrendered by Western Gas Resources, Inc. to Western Midstream Partners pursuant to a negotiated Unit Redemption Agreement, not through market trading.