DIAL CHRISTOPHER B. (SVP, GC and Secretary) 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

DIAL CHRISTOPHER B.

Filed: 2/14/2025ACC: 0001423902-25-000008

InsiderDIAL CHRISTOPHER B.CIK 1729009

→

IssuerWESTERN MIDSTREAM PARTNERS, LPCIK 1423902

Officer· SVP, GC and Secretary

Since Dec 2019

-12.45K

Net shares

Net seller

$496.5K

Total sold

Open market trades

0B · 0S

Total transactions

31.54K acquired · 43.99K disposed

Non-Derivative Transactions6

Common Units representing limited partner interests

Direct

M · Option Exercise

+5.78K

Price / share

—

Trade value

—

% of position

4.4%

2/12/2025

132.60K→138.38K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−2.32K

Price / share

$39.87

Trade value

$92.34K

% of position

1.7%

2/12/2025

138.38K→136.06K

Common Units representing limited partner interests

Direct

M · Option Exercise

+10.82K

Price / share

—

Trade value

—

% of position

8.0%

2/12/2025

136.06K→146.88K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−4.26K

Price / share

$39.87

Trade value

$169.77K

% of position

2.9%

2/12/2025

146.88K→142.62K

Common Units representing limited partner interests

Direct

M · Option Exercise

+14.94K

Price / share

—

Trade value

—

% of position

10.5%

2/12/2025

142.62K→157.56K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−5.88K

Price / share

$39.87

Trade value

$234.40K

% of position

3.7%

2/12/2025

157.56K→151.68K

Total

Net shares

+19.09K

Net value

-$496.50K

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	+5.78K	—	—	4.4%	132.60K	138.38K
Common Units representing limited partner interests Direct	2/12/2025	F · Tax Withholding	−2.32K	$39.87	$92.34K	1.7%	138.38K	136.06K
Common Units representing limited partner interests Direct	2/12/2025	M · Option Exercise	+10.82K	—	—	8.0%	136.06K	146.88K
Common Units representing limited partner interests Direct	2/12/2025	F · Tax Withholding	−4.26K	$39.87	$169.77K	2.9%	146.88K	142.62K
Common Units representing limited partner interests Direct	2/12/2025	M · Option Exercise	+14.94K	—	—	10.5%	142.62K	157.56K
Common Units representing limited partner interests Direct	2/12/2025	F · Tax Withholding	−5.88K	$39.87	$234.40K	3.7%	157.56K	151.68K
Total			+19.09K		-$496.50K

Derivative Transactions3

2022 Phantom Units

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

5.78K shares

−5.78K

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

10.82K shares

−10.82K

Strike price

Held after

10.82K

Exercisable

—

2/12/2025

2024 Phantom Units

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

14.94K shares

−14.94K

Strike price

Held after

29.88K

Exercisable

—

2/12/2025

Security	Converts To	Date	Type	Shares	Exercisable	Held After
2022 Phantom Units Direct	Common Units representing limited partner interests5.78K shares	2/12/2025	M · Option Exercise	−5.78K	—	0.00
2023 Phantom Units Direct	Common Units representing limited partner interests10.82K shares	2/12/2025	M · Option Exercise	−10.82K	—	10.82K
2024 Phantom Units Direct	Common Units representing limited partner interests14.94K shares	2/12/2025	M · Option Exercise	−14.94K	—	29.88K

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

8.67K

Shares owned

8.67K

Exercise price

Expiration

—

Exercise window

—

2022 Performance Unit - TUR

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

8.67K

Shares owned

8.67K

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 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 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

—

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

—

Total

Underlying

94.62K

Owned

94.62K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
2022 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	8.67K	8.67K
2022 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	8.67K	8.67K
2023 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	16.23K	16.23K
2023 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	16.23K	16.23K
2024 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	22.41K	22.41K
2024 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	22.41K	22.41K
Total				94.62K	94.62K