GREEN CATHERINE A. (VP & Chief Accounting Officer) exercised options at WESTERN MIDSTREAM PARTNERS, LP

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 2 exercises

GREEN CATHERINE A.

Filed: 2/21/2025ACC: 0001423902-25-000019

InsiderGREEN CATHERINE A.CIK 1791874

→

IssuerWESTERN MIDSTREAM PARTNERS, LPCIK 1423902

Officer· VP & Chief Accounting Officer

Since Oct 2019

+39.74K

Net shares

Net buyer

$345.4K

Total sold

Open market trades

0B · 0S

Total transactions

69.13K acquired · 29.38K disposed

Non-Derivative Transactions4

Common Units representing limited partner interests

Direct

M · Option Exercise

+9.39K

Price / share

—

Trade value

—

% of position

14.7%

2/20/2025

63.93K→73.32K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−3.70K

Price / share

$41.63

Trade value

$153.91K

% of position

5.0%

2/20/2025

73.32K→69.62K

Common Units representing limited partner interests

Direct

M · Option Exercise

+11.69K

Price / share

—

Trade value

—

% of position

16.8%

2/20/2025

69.62K→81.32K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−4.60K

Price / share

$41.63

Trade value

$191.54K

% of position

5.7%

2/20/2025

81.32K→76.72K

Total

Net shares

+12.79K

Net value

-$345.45K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Units representing limited partner interests Direct	2/20/2025	M · Option Exercise	+9.39K	—	—	14.7%	63.93K	73.32K
Common Units representing limited partner interests Direct	2/20/2025	F · Tax Withholding	−3.70K	$41.63	$153.91K	5.0%	73.32K	69.62K
Common Units representing limited partner interests Direct	2/20/2025	M · Option Exercise	+11.69K	—	—	16.8%	69.62K	81.32K
Common Units representing limited partner interests Direct	2/20/2025	F · Tax Withholding	−4.60K	$41.63	$191.54K	5.7%	81.32K	76.72K
Total			+12.79K		-$345.45K

Derivative Transactions5

2022 Performance Unit - TUR

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

9.39K shares

−9.39K

Strike price

Held after

0.00

Exercisable

—

2/20/2025

2022 Performance Unit - ROA

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

11.69K shares

−11.69K

Strike price

Held after

0.00

Exercisable

—

2/20/2025

2025 Phantom Units

Direct

A · Award

Converts to

Common Units representing limited partner interests

24.02K shares

+24.02K

Strike price

Held after

24.02K

Exercisable

—

2/20/2025

2025 Performance Unit-TUR

Direct

A · Award

Converts to

Common Units representing limited partner interests

12.01K shares

+12.01K

Strike price

Held after

12.01K

Exercisable

—

2/20/2025

2025 Performance Unit-ROA

Direct

A · Award

Converts to

Common Units representing limited partner interests

12.01K shares

+12.01K

Strike price

Held after

12.01K

Exercisable

—

2/20/2025

Security	Converts To	Date	Type	Shares	Exercisable	Held After
2022 Performance Unit - TUR Direct	Common Units representing limited partner interests9.39K shares	2/20/2025	M · Option Exercise	−9.39K	—	0.00
2022 Performance Unit - ROA Direct	Common Units representing limited partner interests11.69K shares	2/20/2025	M · Option Exercise	−11.69K	—	0.00
2025 Phantom Units Direct	Common Units representing limited partner interests24.02K shares	2/20/2025	A · Award	+24.02K	—	24.02K
2025 Performance Unit-TUR Direct	Common Units representing limited partner interests12.01K shares	2/20/2025	A · Award	+12.01K	—	12.01K
2025 Performance Unit-ROA Direct	Common Units representing limited partner interests12.01K shares	2/20/2025	A · Award	+12.01K	—	12.01K

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)6

2023 Performance Unit - TUR

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

10.53K

Shares owned

10.53K

Exercise price

Expiration

—

Exercise window

—

2024 Performance Unit - ROA

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

17.93K

Shares owned

17.93K

Exercise price

Expiration

—

Exercise window

—

2023 Performance Unit - ROA

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

10.53K

Shares owned

10.53K

Exercise price

Expiration

—

Exercise window

—

2024 Phantom Units

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

23.90K

Shares owned

23.90K

Exercise price

Expiration

—

Exercise window

—

2024 Performance Unit - TUR

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

17.93K

Shares owned

17.93K

Exercise price

Expiration

—

Exercise window

—

2023 Phantom Units

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

7.02K

Shares owned

7.02K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

87.83K

Owned

87.83K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
2023 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	10.53K	10.53K
2024 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	17.93K	17.93K
2023 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	10.53K	10.53K
2024 Phantom Units Direct	Common Units representing limited partner interests	—	—	23.90K	23.90K
2024 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	17.93K	17.93K
2023 Phantom Units Direct	Common Units representing limited partner interests	—	—	7.02K	7.02K
Total				87.83K	87.83K