Baseball Merger Sub 2, Inc.

SEC source: 0001140361-26-003924 · form4.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

ANADARKO HOLDING Co · CIK 0001570992 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 150,374,176

F1 · kind: 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.

F1 · price: 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.

F2 · ownership.nature: 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.

F3 · ownership.nature: 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").

F4 · ownership.nature: 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.

SEC source: 0000797468-24-000146 · wk-form4_1723842705.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

ANADARKO HOLDING Co · CIK 0001570992 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 165,681,578

F1 · kind: On August 14, 2024, WGR Asset Holding Company LLC ("WGRAH") and Anadarko USH1 Corporation ("AUSH1") sold 14,139,260 and 5,360,740 common units representing limited partner interests in the Issuer (the "Common Units"), respectively, in an underwritten public offering at a price of $35.75 per Common Unit.

F1 · price: On August 14, 2024, WGR Asset Holding Company LLC ("WGRAH") and Anadarko USH1 Corporation ("AUSH1") sold 14,139,260 and 5,360,740 common units representing limited partner interests in the Issuer (the "Common Units"), respectively, in an underwritten public offering at a price of $35.75 per Common Unit.

F2 · ownership.nature: Following the transaction reported herein, Western Gas Resources, Inc. ("WGRI") holds 156,219,520 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and 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.

F3 · ownership.nature: 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").

F4 · ownership.nature: 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, KMWW and WGRAH are all direct or indirect wholly owned subsidiaries of Occidental.

SEC source: 0001140361-23-044014 · form4.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

ANADARKO HOLDING Co · CIK 0001570992 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnotes

Disclosed balance after: 185,181,578

F1 · kind: On September 7, 2023, Western Midstream Partners, LP (the "Issuer") entered into a unit purchase agreement with Western Gas Resources, Inc. ("WGRI") pursuant to which the Issuer agreed to purchase 5,100,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRI at a price of $25.00 per Common Unit. WGRI and the Issuer completed the sale of such Common Units on September 12, 2023.

F1 · price: On September 7, 2023, Western Midstream Partners, LP (the "Issuer") entered into a unit purchase agreement with Western Gas Resources, Inc. ("WGRI") pursuant to which the Issuer agreed to purchase 5,100,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRI at a price of $25.00 per Common Unit. WGRI and the Issuer completed the sale of such Common Units on September 12, 2023.

F2 · ownership.nature: Following the transaction reported herein, WGRI holds 156,219,520 Common Units, WGR Asset Holding Company LLC ("WGRAH") holds 14,139,260 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and Anadarko USH1 Corporation ("Anadarko USH1") holds 14,364,949 Common Units. WGRI also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer.

F3 · ownership.nature: 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").

F4 · ownership.nature: 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, and APCMH is the sole member of WGRAH. 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 Anadarko USH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGRI, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental.

SEC source: 0001140361-22-026895 · form4.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

ANADARKO HOLDING Co · CIK 0001570992 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 190,281,578

F1 · kind: On July 17, 2022, Western Midstream Partners, LP (the "Issuer") entered into a unit purchase agreement with WGR Asset Holding Company LLC ("WGRAH") pursuant to which the Issuer agreed to purchase 10,000,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRAH at a price of $25.25 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on July 21, 2022.

F1 · price: On July 17, 2022, Western Midstream Partners, LP (the "Issuer") entered into a unit purchase agreement with WGR Asset Holding Company LLC ("WGRAH") pursuant to which the Issuer agreed to purchase 10,000,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRAH at a price of $25.25 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on July 21, 2022.

F2 · ownership.nature: Following the transaction reported herein, Western Gas Resources, Inc. ("WGR") holds 161,319,520 Common Units, WGRAH holds 14,139,260 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and Anadarko USH1 Corporation ("Anadarko USH1") holds 14,364,949 Common Units. WGR also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer.

F3 · ownership.nature: 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").

F4 · ownership.nature: 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 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 Kerr-McGee Worldwide Corporation ("KMWW"), and APC and KMWW together indirectly own 100% of the common stock of Anadarko USH1. Accordingly, OXY USA, OOP, BMS, APC, AHC, WGR, Anadarko USH1, KMG, APCMH, WGRAH and KMWW are all direct or indirect wholly owned subsidiaries of Occidental.

SEC source: 0001140361-21-041953 · form4.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

Occidental Permian Manager LLC · CIK 0001785602 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

ANADARKO HOLDING Co · CIK 0001570992 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 200,281,578

F1 · kind: On December 7, 2021, Western Midstream Partners, LP (the "Issuer") entered into unit purchase agreement with WGR Asset Holding Company LLC ("WGRAH") pursuant to which the Issuer agreed to purchase 2,500,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRAH at a price of $20.09 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on December 13, 2021.

F1 · price: On December 7, 2021, Western Midstream Partners, LP (the "Issuer") entered into unit purchase agreement with WGR Asset Holding Company LLC ("WGRAH") pursuant to which the Issuer agreed to purchase 2,500,000 common units representing limited partner interests in the Issuer (the "Common Units") from WGRAH at a price of $20.09 per Common Unit. WGRAH and the Issuer completed the sale of such Common Units on December 13, 2021.

F2 · ownership.nature: Following the transaction reported herein, Western Gas Resources, Inc. ("WGR") holds 161,319,520 Common Units, WGRAH holds 24,139,260 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and Anadarko USH1 Corporation ("Anadarko USH1") holds 14,364,949 Common Units. WGR also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer.

F3 · ownership.nature: 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").

F4 · ownership.nature: 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 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 Kerr-McGee Worldwide Corporation ("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.

SEC source: 0001567619-21-007163 · doc1.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

Occidental Permian Manager LLC · CIK 0001785602 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 202,781,578

F1 · kind: On March 22, 2021, Western Midstream Partners, LP (the "Issuer"), Western Midstream Holdings, LLC, WGR Asset Holding Company LLC ("WGRAH") and BofA Securities, Inc., as underwriter (the "Underwriter"), entered into an underwriting agreement pursuant to which WGRAH agreed to sell to the Underwriter, and the Underwriter agreed to purchase from WGRAH, subject to and upon the terms and conditions set forth therein, up to 11,500,000 common units representing limited partner interests in the Issuer (the "Common Units") at a price of $17.25 per Common Unit. WGRAH completed the sale of 11,500,000 Common Units to the Underwriter on March 25, 2021.

F1 · price: On March 22, 2021, Western Midstream Partners, LP (the "Issuer"), Western Midstream Holdings, LLC, WGR Asset Holding Company LLC ("WGRAH") and BofA Securities, Inc., as underwriter (the "Underwriter"), entered into an underwriting agreement pursuant to which WGRAH agreed to sell to the Underwriter, and the Underwriter agreed to purchase from WGRAH, subject to and upon the terms and conditions set forth therein, up to 11,500,000 common units representing limited partner interests in the Issuer (the "Common Units") at a price of $17.25 per Common Unit. WGRAH completed the sale of 11,500,000 Common Units to the Underwriter on March 25, 2021.

F2 · ownership.nature: Following the transaction reported herein, Western Gas Resources, Inc. ("WGR") holds 161,319,520 Common Units, WGRAH holds 26,639,260 Common Units, APC Midstream Holdings, LLC ("APCMH") holds 457,849 Common Units and Anadarko USH1 Corporation ("Anadarko USH1") holds 14,364,949 Common Units. WGR also is the sole member of Western Midstream Holdings, LLC, the 2% economic general partner of the Issuer.

F3 · ownership.nature: 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").

F4 · ownership.nature: 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 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 Kerr-McGee Worldwide Corporation ("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.

SEC source: 0001140361-20-020564 · form4.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

Occidental Permian Manager LLC · CIK 0001785602 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 214,281,578

F1 · kind: 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.

F1 · price: 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.

F2 · ownership.nature: 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.

F3 · ownership.nature: 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").

F4 · ownership.nature: 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.

SEC source: 0001140361-20-000276 · form4.xml · nonDerivative · entry 1

OCCIDENTAL PETROLEUM CORP /DE/ · CIK 0000797468 · 10% owner

OXY USA INC · CIK 0000728399 · 10% owner

Occidental Permian Manager LLC · CIK 0001785602 · 10% owner

OXY Oil Partners, Inc. · CIK 0001785615 · 10% owner

Occidental Permian Ltd. · CIK 0001785594 · 10% owner

Baseball Merger Sub 2, Inc. · CIK 0001785593 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnotes

Disclosed balance after: 242,136,976

F1 · kind: 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.

F1 · price: 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.

F1 · balance_after: 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.

F2 · ownership.nature: 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").

F3 · ownership.nature: 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").

F4 · ownership.nature: 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.