HOLDERMAN DANIEL P.

Filed: 2/21/2025ACC: 0001423902-25-000016

InsiderHOLDERMAN DANIEL P.CIK 1942513

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IssuerWESTERN MIDSTREAM PARTNERS, LPCIK 1423902

Officer· SVP & Chief Operating Officer

Since Feb 2026

+60.05K

Net shares

Net buyer

$0.00

Total acquired

Open market trades

0B · 0S

Total transactions

60.05K acquired

Non-Derivative Transactions0

No non-derivative transactions reported

Derivative Transactions3

2025 Phantom Units

Direct

A · Award

Converts to

Common Units representing limited partner interests

30.03K shares

+30.03K

Strike price

Held after

30.03K

Exercisable

—

2/20/2025

2025 Performance Unit-TUR

Direct

A · Award

Converts to

Common Units representing limited partner interests

15.01K shares

+15.01K

Strike price

Held after

15.01K

Exercisable

—

2/20/2025

2025 Performance Unit-ROA

Direct

A · Award

Converts to

Common Units representing limited partner interests

15.01K shares

+15.01K

Strike price

Held after

15.01K

Exercisable

—

2/20/2025

Security	Converts To	Date	Type	Shares	Exercisable	Held After
2025 Phantom Units Direct	Common Units representing limited partner interests30.03K shares	2/20/2025	A · Award	+30.03K	—	30.03K
2025 Performance Unit-TUR Direct	Common Units representing limited partner interests15.01K shares	2/20/2025	A · Award	+15.01K	—	15.01K
2025 Performance Unit-ROA Direct	Common Units representing limited partner interests15.01K shares	2/20/2025	A · Award	+15.01K	—	15.01K

Non-Derivative Holdings (Post-Transaction)1

Common Units representing limited partner interests

Direct

Shares owned35.75K

Total

35.75K direct35.75K

Security Title	Shares Owned	Ownership Type
Common Units representing limited partner interests	35.75K	Direct
Total	35.75K	35.75K direct

Derivative Holdings (Post-Transaction)6

2023 Performance Unit - TUR

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

16.23K

Shares owned

16.23K

Exercise price

Expiration

—

Exercise window

—

2024 Phantom Units

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

29.88K

Shares owned

29.88K

Exercise price

Expiration

—

Exercise window

—

2024 Performance Unit - TUR

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

22.41K

Shares owned

22.41K

Exercise price

Expiration

—

Exercise window

—

2024 Performance Unit - ROA

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

22.41K

Shares owned

22.41K

Exercise price

Expiration

—

Exercise window

—

2023 Performance Unit - ROA

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

16.23K

Shares owned

16.23K

Exercise price

Expiration

—

Exercise window

—

2023 Phantom Units

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

10.82K

Shares owned

10.82K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

117.97K

Owned

117.97K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
2023 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	16.23K	16.23K
2024 Phantom Units Direct	Common Units representing limited partner interests	—	—	29.88K	29.88K
2024 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	22.41K	22.41K
2024 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	22.41K	22.41K
2023 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	16.23K	16.23K
2023 Phantom Units Direct	Common Units representing limited partner interests	—	—	10.82K	10.82K
Total				117.97K	117.97K