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 · 3 exercises

GREEN CATHERINE A.

Filed: 2/14/2025ACC: 0001423902-25-000010

InsiderGREEN CATHERINE A.CIK 1791874

→

IssuerWESTERN MIDSTREAM PARTNERS, LPCIK 1423902

Officer· VP & Chief Accounting Officer

Since Oct 2019

-9.18K

Net shares

Net seller

$366.1K

Total sold

Open market trades

0B · 0S

Total transactions

23.14K acquired · 32.33K disposed

Non-Derivative Transactions6

Common Units representing limited partner interests

Direct

M · Option Exercise

+4.17K

Price / share

—

Trade value

—

% of position

8.4%

2/12/2025

49.97K→54.14K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−1.72K

Price / share

$39.87

Trade value

$68.42K

% of position

3.2%

2/12/2025

54.14K→52.42K

Common Units representing limited partner interests

Direct

M · Option Exercise

+7.02K

Price / share

—

Trade value

—

% of position

13.4%

2/12/2025

52.42K→59.44K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−2.76K

Price / share

$39.87

Trade value

$110.12K

% of position

4.6%

2/12/2025

59.44K→56.68K

Common Units representing limited partner interests

Direct

M · Option Exercise

+11.95K

Price / share

—

Trade value

—

% of position

21.1%

2/12/2025

56.68K→68.63K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−4.70K

Price / share

$39.87

Trade value

$187.55K

% of position

6.9%

2/12/2025

68.63K→63.93K

Total

Net shares

+13.96K

Net value

-$366.09K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Units representing limited partner interests Direct	2/12/2025	M · Option Exercise	+4.17K	—	—	8.4%	49.97K	54.14K
Common Units representing limited partner interests Direct	2/12/2025	F · Tax Withholding	−1.72K	$39.87	$68.42K	3.2%	54.14K	52.42K
Common Units representing limited partner interests Direct	2/12/2025	M · Option Exercise	+7.02K	—	—	13.4%	52.42K	59.44K
Common Units representing limited partner interests Direct	2/12/2025	F · Tax Withholding	−2.76K	$39.87	$110.12K	4.6%	59.44K	56.68K
Common Units representing limited partner interests Direct	2/12/2025	M · Option Exercise	+11.95K	—	—	21.1%	56.68K	68.63K
Common Units representing limited partner interests Direct	2/12/2025	F · Tax Withholding	−4.70K	$39.87	$187.55K	6.9%	68.63K	63.93K
Total			+13.96K		-$366.09K

Derivative Transactions3

2022 Phantom Units

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

4.17K shares

−4.17K

Strike price

Held after

0.00

Exercisable

—

2/12/2025

2023 Phantom Units

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

7.02K shares

−7.02K

Strike price

Held after

7.02K

Exercisable

—

2/12/2025

2024 Phantom Units

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

11.95K shares

−11.95K

Strike price

Held after

23.90K

Exercisable

—

2/12/2025

Security	Converts To	Date	Type	Shares	Exercisable	Held After
2022 Phantom Units Direct	Common Units representing limited partner interests4.17K shares	2/12/2025	M · Option Exercise	−4.17K	—	0.00
2023 Phantom Units Direct	Common Units representing limited partner interests7.02K shares	2/12/2025	M · Option Exercise	−7.02K	—	7.02K
2024 Phantom Units Direct	Common Units representing limited partner interests11.95K shares	2/12/2025	M · Option Exercise	−11.95K	—	23.90K

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)6

2022 Performance Unit - ROA

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

6.26K

Shares owned

6.26K

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

—

2022 Performance Unit - TUR

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

6.26K

Shares owned

6.26K

Exercise price

Expiration

—

Exercise window

—

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 - TUR

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

17.93K

Shares owned

17.93K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

69.43K

Owned

69.43K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
2022 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	6.26K	6.26K
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
2022 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	6.26K	6.26K
2023 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	10.53K	10.53K
2024 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	17.93K	17.93K
Total				69.43K	69.43K