WES

SEC source: 0001423902-24-000006 · wk-form4_1707952988.xml · derivative · entry 18

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,296

Underlying: Common Units representing limited partner interests · 75,296 shares

Expires 2027-02-12

F5 · derivative.exercise_price: Each performance-based unit represents the right to receive, following vesting, between 0% and 200% of one WES Common Unit based upon the achievement of pre-established performance metrics over a 3-year performance period.

SEC source: 0001423902-24-000006 · wk-form4_1707952988.xml · derivative · entry 17

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,296

Underlying: Common Units representing limited partner interests · 75,296 shares

Expires 2027-02-12

F5 · derivative.exercise_price: Each performance-based unit represents the right to receive, following vesting, between 0% and 200% of one WES Common Unit based upon the achievement of pre-established performance metrics over a 3-year performance period.

SEC source: 0001423902-24-000006 · wk-form4_1707952988.xml · derivative · entry 16

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 150,592

Underlying: Common Units representing limited partner interests · 150,592 shares

Expires 2027-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F4 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000006 · wk-form4_1707952988.xml · derivative · entry 15

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 165,302 shares

Expires 2024-02-12

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.

F5 · derivative.exercise_price: Each performance-based unit represents the right to receive, following vesting, between 0% and 200% of one WES Common Unit based upon the achievement of pre-established performance metrics over a 3-year performance period.

SEC source: 0001423902-24-000006 · wk-form4_1707952988.xml · derivative · entry 14

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 190,979 shares

Expires 2024-02-12

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.

F5 · derivative.exercise_price: Each performance-based unit represents the right to receive, following vesting, between 0% and 200% of one WES Common Unit based upon the achievement of pre-established performance metrics over a 3-year performance period.

SEC source: 0001423902-24-000006 · wk-form4_1707952988.xml · nonDerivative · entry 10

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 556,404

SEC source: 0001423902-24-000006 · wk-form4_1707952988.xml · nonDerivative · entry 9

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 621,451

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: 0001423902-24-000006 · wk-form4_1707952988.xml · nonDerivative · entry 8

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 456,149

SEC source: 0001423902-24-000006 · wk-form4_1707952988.xml · nonDerivative · entry 7

Ure Michael · CIK 0001785307 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 531,300

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: 0001423902-24-000005 · wk-form4_1707952909.xml · derivative · entry 3

STEWART LISA A · CIK 0001244213 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,199

Underlying: Common Units representing limited partner interests · 5,199 shares

Expires 2025-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

SEC source: 0001423902-24-000003 · wk-form4_1707952742.xml · derivative · entry 3

Owen Kenneth F. · CIK 0001523426 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,199

Underlying: Common Units representing limited partner interests · 5,199 shares

Expires 2025-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

SEC source: 0001423902-24-000002 · wk-form4_1707952623.xml · derivative · entry 3

Brown Oscar K · CIK 0001715126 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,199

Underlying: Common Units representing limited partner interests · 5,199 shares

Expires 2025-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

SEC source: 0001423902-24-000004 · wk-form4_1707952832.xml · derivative · entry 2

SCHULTE DAVID J · CIK 0001107140 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 5,088 shares

Expires 2024-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

SEC source: 0001423902-24-000004 · wk-form4_1707952832.xml · nonDerivative · entry 1

SCHULTE DAVID J · CIK 0001107140 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,230

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: 0001423902-24-000011 · wk-form4_1707953576.xml · derivative · entry 13

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,638

Underlying: Common Units representing limited partner interests · 10,818 shares

Expires 2026-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000011 · wk-form4_1707953576.xml · derivative · entry 12

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,781

Underlying: Common Units representing limited partner interests · 5,780 shares

Expires not disclosed

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.

F3 · 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

F4 · 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.

F4 · 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: 0001423902-24-000011 · wk-form4_1707953576.xml · derivative · entry 11

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 8,921 shares

Expires not disclosed

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

F2 · derivative.expiration_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000011 · wk-form4_1707953576.xml · nonDerivative · entry 6

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,123

SEC source: 0001423902-24-000011 · wk-form4_1707953576.xml · nonDerivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,380

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: 0001423902-24-000011 · wk-form4_1707953576.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,562

SEC source: 0001423902-24-000011 · wk-form4_1707953576.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,837

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: 0001423902-24-000011 · wk-form4_1707953576.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,057

SEC source: 0001423902-24-000011 · wk-form4_1707953576.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,666

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: 0001423902-24-000014 · wk-form4_1707953884.xml · derivative · entry 9

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,638

Underlying: Common Units representing limited partner interests · 10,818 shares

Expires 2026-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000014 · wk-form4_1707953884.xml · derivative · entry 8

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,789

Underlying: Common Units representing limited partner interests · 2,789 shares

Expires not disclosed

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

F2 · derivative.expiration_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000014 · wk-form4_1707953884.xml · derivative · entry 7

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 3,214 shares

Expires not disclosed

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

F2 · derivative.expiration_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000014 · wk-form4_1707953884.xml · nonDerivative · entry 6

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,312

SEC source: 0001423902-24-000014 · wk-form4_1707953884.xml · nonDerivative · entry 5

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,569

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: 0001423902-24-000014 · wk-form4_1707953884.xml · nonDerivative · entry 4

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,751

SEC source: 0001423902-24-000014 · wk-form4_1707953884.xml · nonDerivative · entry 3

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,847

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: 0001423902-24-000014 · wk-form4_1707953884.xml · nonDerivative · entry 2

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,058

SEC source: 0001423902-24-000014 · wk-form4_1707953884.xml · nonDerivative · entry 1

Forsyth Michael S. · CIK 0001949639 · SVP, North Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,441

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: 0001423902-24-000015 · wk-form4_1707953988.xml · derivative · entry 13

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,036

Underlying: Common Units representing limited partner interests · 7,017 shares

Expires 2026-02-12

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.

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F4 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000015 · wk-form4_1707953988.xml · derivative · entry 12

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,175

Underlying: Common Units representing limited partner interests · 4,175 shares

Expires not disclosed

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.

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F4 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

F4 · derivative.expiration_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000015 · wk-form4_1707953988.xml · derivative · entry 11

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 4,198 shares

Expires not disclosed

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, 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: 0001423902-24-000015 · wk-form4_1707953988.xml · nonDerivative · entry 6

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,619

SEC source: 0001423902-24-000015 · wk-form4_1707953988.xml · nonDerivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 40,381

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: 0001423902-24-000015 · wk-form4_1707953988.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,364

SEC source: 0001423902-24-000015 · wk-form4_1707953988.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,007

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: 0001423902-24-000015 · wk-form4_1707953988.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,832

SEC source: 0001423902-24-000015 · wk-form4_1707953988.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,623

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: 0001423902-24-000013 · wk-form4_1707953797.xml · derivative · entry 6

Holderman Daniel P. · CIK 0001942513 · SVP, South Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,638

Underlying: Common Units representing limited partner interests · 10,818 shares

Expires 2026-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F3 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000013 · wk-form4_1707953797.xml · derivative · entry 5

Holderman Daniel P. · CIK 0001942513 · SVP, South Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,055

Underlying: Common Units representing limited partner interests · 7,054 shares

Expires not disclosed

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: The Phantom Units vest in three annual installments 20% on February 12, 2023, 40% on February 12, 2024, and 40% on February 12, 2025, and will pay distribution equivalent rights in cash prior to vesting.

F2 · derivative.expiration_date: The Phantom Units vest in three annual installments 20% on February 12, 2023, 40% on February 12, 2024, and 40% on February 12, 2025, and will pay distribution equivalent rights in cash prior to vesting.

SEC source: 0001423902-24-000013 · wk-form4_1707953797.xml · nonDerivative · entry 4

Holderman Daniel P. · CIK 0001942513 · SVP, South Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,887

SEC source: 0001423902-24-000013 · wk-form4_1707953797.xml · nonDerivative · entry 3

Holderman Daniel P. · CIK 0001942513 · SVP, South Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,522

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: 0001423902-24-000013 · wk-form4_1707953797.xml · nonDerivative · entry 2

Holderman Daniel P. · CIK 0001942513 · SVP, South Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,704

SEC source: 0001423902-24-000013 · wk-form4_1707953797.xml · nonDerivative · entry 1

Holderman Daniel P. · CIK 0001942513 · SVP, South Operations

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,536

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: 0001423902-24-000012 · wk-form4_1707953696.xml · derivative · entry 9

Nebreda Alejandro O · CIK 0001976757 · SVP, Business Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,729

Underlying: Common Units representing limited partner interests · 10,864 shares

Expires 2026-02-12

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000012 · wk-form4_1707953696.xml · derivative · entry 8

Nebreda Alejandro O · CIK 0001976757 · SVP, Business Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,473

Underlying: Common Units representing limited partner interests · 11,472 shares

Expires not disclosed

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

F2 · derivative.expiration_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

SEC source: 0001423902-24-000012 · wk-form4_1707953696.xml · derivative · entry 7

Nebreda Alejandro O · CIK 0001976757 · SVP, Business Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Units representing limited partner interests · 7,142 shares

Expires not disclosed

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, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit.

F2 · derivative.exercise_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.

F2 · derivative.expiration_date: These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis.