WES

SEC source: 0001127602-20-017019 · form4.xml · nonDerivative · entry 1

Green Catherine A. · CIK 0001791874 · VP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,067

F1 · price: Represents an issuance of WES Common Units pursuant to distribution equivalent rights (DERs) existing under the terms of unvested phantom and performance unit awards, which provide for DERs to be paid in the form of WES Common Units.

SEC source: 0001127602-20-017018 · form4.xml · nonDerivative · entry 2

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,985

SEC source: 0001127602-20-017018 · form4.xml · nonDerivative · entry 1

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,623

F1 · price: Represents an issuance of WES Common Units pursuant to distribution equivalent rights (DERs) existing under the terms of unvested phantom and performance unit awards, which provide for DERs to be paid in the form of WES Common Units.

SEC source: 0001127602-20-029210 · form4a.xml · nonDerivative · entry 2

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,357

SEC source: 0001127602-20-029210 · form4a.xml · nonDerivative · entry 1

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,046

F1 · balance_after: This report amends the Form 4 filed on behalf of Mr. Ure on May 18, 2020, to properly reflect 10,000 common units purchased by Mr. Ure and reported on Form 4 on March 10, 2020. This omission also affected the Form 4 filed on behalf of Mr. Ure on August 17, 2020.

SEC source: 0000899243-20-007760 · doc4.xml · nonDerivative · entry 3

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 666,402

SEC source: 0000899243-20-007760 · doc4.xml · nonDerivative · entry 2

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 566,402

SEC source: 0000899243-20-007760 · doc4.xml · nonDerivative · entry 1

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 499,702

SEC source: 0000899243-20-007761 · doc4.xml · nonDerivative · entry 1

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

SEC source: 0001127602-20-009648 · form4.xml · nonDerivative · entry 1

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 325,702

SEC source: 0001127602-20-005640 · form4.xml · derivative · entry 2

Dial Christopher B. · CIK 0001729009 · SVP, GC and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,333

Underlying: Common Units representing limited partner interests · 34,333 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, entitled to receive a common unit

F2 · derivative.exercise_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

F2 · derivative.expiration_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

SEC source: 0001127602-20-005654 · form4.xml · derivative · entry 2

Bourne Robert W. · CIK 0001627376 · SVP & Chief Commercial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 37,454

Underlying: Common Units representing limited partner interests · 37,454 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, entitled to receive a common unit

F2 · derivative.exercise_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

F2 · derivative.expiration_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

SEC source: 0001127602-20-005647 · form4.xml · derivative · entry 3

Collins Craig W · CIK 0001698812 · SVP & Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,544

Underlying: Common Units representing limited partner interests · 65,544 shares

Expires not disclosed

F2 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, entitled to receive a common unit

F3 · derivative.exercise_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

F3 · derivative.expiration_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

SEC source: 0001127602-20-005634 · form4.xml · derivative · entry 2

Green Catherine A. · CIK 0001791874 · VP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 14,046

Underlying: Common Units representing limited partner interests · 14,046 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, entitled to receive a common unit

F2 · derivative.exercise_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

F2 · derivative.expiration_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

SEC source: 0001127602-20-005625 · form4.xml · derivative · entry 2

Pearl Michael C · CIK 0001423903 · SVP and CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 65,544

Underlying: Common Units representing limited partner interests · 65,544 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, entitled to receive a common unit

F2 · derivative.exercise_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

F2 · derivative.expiration_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

SEC source: 0001127602-20-005627 · form4.xml · derivative · entry 2

Griffie Charles G. · CIK 0001791932 · SVP, Ops and Engineering

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,575

Underlying: Common Units representing limited partner interests · 40,575 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, entitled to receive a common unit

F2 · derivative.exercise_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

F2 · derivative.expiration_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

SEC source: 0001127602-20-005621 · form4.xml · derivative · entry 2

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 156,055

Underlying: Common Units representing limited partner interests · 156,055 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, entitled to receive a common unit

F2 · derivative.exercise_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

F2 · derivative.expiration_date: The phantom units vest in three annual installments beginning one year after the date of grant, and will pay distribution equivalent rights prior to vesting in the form of WES Common Units.

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.

SEC source: 0001140361-20-000275 · form4.xml · nonDerivative · entry 1

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

ANADARKO PETROLEUM CORP · CIK 0000773910 · 10% owner

WESTERN GAS RESOURCES INC · CIK 0000856716 · 10% owner

APC Midstream Holdings, LLC · CIK 0001601306 · 10% owner

WGR Asset Holding Co LLC · CIK 0001771584 · 10% owner

Kerr-McGee Worldwide Corp · CIK 0001699285 · 10% owner

Anadarko E&P Onshore LLC · CIK 0001570991 · 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.

SEC source: 0001127602-19-033592 · form4.xml · nonDerivative · entry 4

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 254,201

SEC source: 0001127602-19-033592 · form4.xml · nonDerivative · entry 3

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 244,311

SEC source: 0001127602-19-033592 · form4.xml · nonDerivative · entry 2

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 223,270

SEC source: 0001127602-19-028948 · form4.xml · nonDerivative · entry 1

Tudor David J · CIK 0001432308 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,241

SEC source: 0001127602-19-026435 · form4.xml · derivative · entry 2

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting. Pursuant to the terms of the award, this Phantom Unit grant vested in full upon the change of control of Anadarko Petroleum Corporation on August 8, 2019.

SEC source: 0001127602-19-026435 · form4.xml · nonDerivative · entry 1

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,270

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-026440 · form4.xml · derivative · entry 2

Tudor David J · CIK 0001432308 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting. Pursuant to the terms of the award, this Phantom Unit grant vested in full upon the change of control of Anadarko Petroleum Corporation on August 8, 2019.

SEC source: 0001127602-19-026440 · form4.xml · nonDerivative · entry 1

Tudor David J · CIK 0001432308 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,241

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-026442 · form4.xml · derivative · entry 3

Stewart Craig W. · CIK 0001568357 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting. Pursuant to the terms of the award, this Phantom Unit grant vested in full upon the change of control of Anadarko Petroleum Corporation on August 8, 2019.

SEC source: 0001127602-19-026442 · form4.xml · nonDerivative · entry 2

Stewart Craig W. · CIK 0001568357 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,073

SEC source: 0001127602-19-026442 · form4.xml · nonDerivative · entry 1

Stewart Craig W. · CIK 0001568357 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,089

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-026437 · form4.xml · derivative · entry 2

HIX THOMAS R · CIK 0001207003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting. Pursuant to the terms of the award, this Phantom Unit grant vested in full upon the change of control of Anadarko Petroleum Corporation on August 8, 2019.

SEC source: 0001127602-19-026437 · form4.xml · nonDerivative · entry 1

HIX THOMAS R · CIK 0001207003 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,530

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-026432 · form4.xml · derivative · entry 2

CARROLL MILTON · CIK 0001188744 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting. Pursuant to the terms of the award, this Phantom Unit grant vested in full upon the change of control of Anadarko Petroleum Corporation on August 8, 2019.

SEC source: 0001127602-19-026432 · form4.xml · nonDerivative · entry 1

CARROLL MILTON · CIK 0001188744 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,034

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-026423 · form4.xml · derivative · entry 2

Arnold Steven D · CIK 0001404956 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting. Pursuant to the terms of the award, this Phantom Unit grant vested in full upon the change of control of Anadarko Petroleum Corporation on August 8, 2019.

SEC source: 0001127602-19-026423 · form4.xml · nonDerivative · entry 1

Arnold Steven D · CIK 0001404956 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,616

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-033592 · form4.xml · nonDerivative · entry 1

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 169,068

SEC source: 0001127602-19-017960 · form4.xml · derivative · entry 3

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,202

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

F2 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting.

SEC source: 0001127602-19-017960 · form4.xml · derivative · entry 2

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 3,058 shares

Expires 2019-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: In connection with the Merger, Mr. Crane's grant of 2,005 WES phantom units was converted into a grant of 3,058 WGP phantom units, which reflects the conversion ratio of 1.525 WGP common units for each WES common unit set forth in the Merger transaction document.

SEC source: 0001127602-19-017960 · form4.xml · nonDerivative · entry 1

CRANE JAMES R · CIK 0001007833 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,068

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-017956 · form4.xml · derivative · entry 5

Tudor David J · CIK 0001432308 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,202

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

F3 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting.

SEC source: 0001127602-19-017956 · form4.xml · derivative · entry 4

Tudor David J · CIK 0001432308 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 3,058 shares

Expires 2019-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: In connection with the Merger, Mr. Tudor's grant of 2,005 WES phantom units was converted into a grant of 3,058 WGP phantom units, which reflects the conversion ratio of 1.525 WGP common units for each WES common unit set forth in the Merger document.

SEC source: 0001127602-19-017956 · form4.xml · derivative · entry 3

Tudor David J · CIK 0001432308 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 1,426 shares

Expires 2019-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WGP Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting.

SEC source: 0001127602-19-017956 · form4.xml · nonDerivative · entry 2

Tudor David J · CIK 0001432308 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,039

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-017956 · form4.xml · nonDerivative · entry 1

Tudor David J · CIK 0001432308 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,981

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-017966 · form4.xml · derivative · entry 3

Arnold Steven D · CIK 0001404956 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,202

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

F2 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting.

SEC source: 0001127602-19-017966 · form4.xml · derivative · entry 2

Arnold Steven D · CIK 0001404956 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 3,058 shares

Expires 2019-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: In connection with the Merger, Mr. Arnold's grant of 2,005 WES phantom units was converted into a grant of 3,058 WGP phantom units, which reflects the conversion ratio of 1.525 WGP common units for each WES common unit set forth in the Merger transaction document.

SEC source: 0001127602-19-017966 · form4.xml · nonDerivative · entry 1

Arnold Steven D · CIK 0001404956 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 68,414

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

SEC source: 0001127602-19-017964 · form4.xml · derivative · entry 3

CARROLL MILTON · CIK 0001188744 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,202

Underlying: Common Units representing limited partner interests · 4,202 shares

Expires 2020-05-08

F2 · derivative.exercise_price: Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, in the discretion of our general partners' board of directors, cash equal to the fair market value of a common unit at the time of vesting.

SEC source: 0001127602-19-017964 · form4.xml · derivative · entry 2

CARROLL MILTON · CIK 0001188744 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 3,058 shares

Expires 2019-05-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: In connection with the Merger, Mr. Carroll's grant of 2,005 WES phantom units was converted into a grant of 3,058 WGP phantom units, which reflects the conversion ratio of 1.525 WGP common units for each WES common unit set forth in the Merger transaction document.