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 · 2 exercises

DIAL CHRISTOPHER B.

Filed: 2/21/2025ACC: 0001423902-25-000018

InsiderDIAL CHRISTOPHER B.CIK 1729009

→

IssuerWESTERN MIDSTREAM PARTNERS, LPCIK 1423902

Officer· SVP, GC and Secretary

Since Dec 2019

+48.56K

Net shares

Net buyer

$478.3K

Total sold

Open market trades

0B · 0S

Total transactions

89.25K acquired · 40.69K disposed

Non-Derivative Transactions4

Common Units representing limited partner interests

Direct

M · Option Exercise

+13.01K

Price / share

—

Trade value

—

% of position

8.6%

2/20/2025

151.68K→164.69K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−5.12K

Price / share

$41.63

Trade value

$213.10K

% of position

3.1%

2/20/2025

164.69K→159.57K

Common Units representing limited partner interests

Direct

M · Option Exercise

+16.19K

Price / share

—

Trade value

—

% of position

10.1%

2/20/2025

159.57K→175.76K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−6.37K

Price / share

$41.63

Trade value

$265.22K

% of position

3.6%

2/20/2025

175.76K→169.39K

Total

Net shares

+17.71K

Net value

-$478.33K

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	+13.01K	—	—	8.6%	151.68K	164.69K
Common Units representing limited partner interests Direct	2/20/2025	F · Tax Withholding	−5.12K	$41.63	$213.10K	3.1%	164.69K	159.57K
Common Units representing limited partner interests Direct	2/20/2025	M · Option Exercise	+16.19K	—	—	10.1%	159.57K	175.76K
Common Units representing limited partner interests Direct	2/20/2025	F · Tax Withholding	−6.37K	$41.63	$265.22K	3.6%	175.76K	169.39K
Total			+17.71K		-$478.33K

Derivative Transactions5

2022 Performance Unit - TUR

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

13.01K shares

−13.01K

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

16.19K shares

−16.19K

Strike price

Held after

0.00

Exercisable

—

2/20/2025

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
2022 Performance Unit - TUR Direct	Common Units representing limited partner interests13.01K shares	2/20/2025	M · Option Exercise	−13.01K	—	0.00
2022 Performance Unit - ROA Direct	Common Units representing limited partner interests16.19K shares	2/20/2025	M · Option Exercise	−16.19K	—	0.00
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)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)6

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

—

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 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 - 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 - TUR

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 - ROA Direct	Common Units representing limited partner interests	—	—	16.23K	16.23K
2024 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	22.41K	22.41K
2024 Phantom Units Direct	Common Units representing limited partner interests	—	—	29.88K	29.88K
2024 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	22.41K	22.41K
2023 Performance Unit - TUR 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