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 · 5 exercises

GREEN CATHERINE A.

Filed: 2/13/2026ACC: 0001423902-26-000007

InsiderGREEN CATHERINE A.CIK 1791874

→

IssuerWESTERN MIDSTREAM PARTNERS, LPCIK 1423902

Officer· VP & Chief Accounting Officer

Since Oct 2019

+22.23K

Net shares

Net buyer

$42.54M

Total sold

Open market trades

0B · 0S

Total transactions

110.54K acquired · 88.31K disposed

Non-Derivative Transactions10

Common Units representing limited partner interests

Direct

M · Option Exercise

+7.02K

Price / share

—

Trade value

—

% of position

9.1%

2/12/2026

76.72K→83.73K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−2.76K

Price / share

$42.35

Trade value

$116.97K

% of position

3.3%

2/12/2026

83.73K→80.97K

Common Units representing limited partner interests

Direct

M · Option Exercise

+11.95K

Price / share

—

Trade value

—

% of position

14.8%

2/12/2026

80.97K→92.92K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−4.70K

Price / share

$42.35

Trade value

$199.21K

% of position

5.1%

2/12/2026

92.92K→88.22K

Common Units representing limited partner interests

Direct

M · Option Exercise

+8.01K

Price / share

—

Trade value

—

% of position

9.1%

2/12/2026

88.22K→96.23K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−3.15K

Price / share

$42.35

Trade value

$133.49K

% of position

3.3%

2/12/2026

96.23K→93.08K

Common Units representing limited partner interests

Direct

M · Option Exercise

+16.42K

Price / share

—

Trade value

—

% of position

17.6%

2/12/2026

93.08K→109.50K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−6.46K

Price / share

$6.46K

Trade value

$41.76M

% of position

5.9%

2/12/2026

109.50K→103.03K

Common Units representing limited partner interests

Direct

M · Option Exercise

+19.92K

Price / share

—

Trade value

—

% of position

19.3%

2/12/2026

103.03K→122.95K

Common Units representing limited partner interests

Direct

F · Tax Withholding

−7.91K

Price / share

$42.35

Trade value

$335.16K

% of position

6.4%

2/12/2026

122.95K→115.04K

Total

Net shares

+38.32K

Net value

-$42.54M

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Units representing limited partner interests Direct	2/12/2026	M · Option Exercise	+7.02K	—	—	9.1%	76.72K	83.73K
Common Units representing limited partner interests Direct	2/12/2026	F · Tax Withholding	−2.76K	$42.35	$116.97K	3.3%	83.73K	80.97K
Common Units representing limited partner interests Direct	2/12/2026	M · Option Exercise	+11.95K	—	—	14.8%	80.97K	92.92K
Common Units representing limited partner interests Direct	2/12/2026	F · Tax Withholding	−4.70K	$42.35	$199.21K	5.1%	92.92K	88.22K
Common Units representing limited partner interests Direct	2/12/2026	M · Option Exercise	+8.01K	—	—	9.1%	88.22K	96.23K
Common Units representing limited partner interests Direct	2/12/2026	F · Tax Withholding	−3.15K	$42.35	$133.49K	3.3%	96.23K	93.08K
Common Units representing limited partner interests Direct	2/12/2026	M · Option Exercise	+16.42K	—	—	17.6%	93.08K	109.50K
Common Units representing limited partner interests Direct	2/12/2026	F · Tax Withholding	−6.46K	$6.46K	$41.76M	5.9%	109.50K	103.03K
Common Units representing limited partner interests Direct	2/12/2026	M · Option Exercise	+19.92K	—	—	19.3%	103.03K	122.95K
Common Units representing limited partner interests Direct	2/12/2026	F · Tax Withholding	−7.91K	$42.35	$335.16K	6.4%	122.95K	115.04K
Total			+38.32K		-$42.54M

Derivative Transactions8

2023 Phantom Units

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

7.02K shares

−7.02K

Strike price

Held after

0.00

Exercisable

—

2/12/2026

2023 Performance Unit - TUR

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

16.42K shares

−16.42K

Strike price

Held after

0.00

Exercisable

—

2/12/2026

2023 Performance Unit - ROA

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

19.92K shares

−19.92K

Strike price

Held after

0.00

Exercisable

—

2/12/2026

2024 Phantom Units

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

11.95K shares

−11.95K

Strike price

Held after

11.95K

Exercisable

—

2/12/2026

2025 Phantom Units

Direct

M · Option Exercise

Converts to

Common Units representing limited partner interests

8.01K shares

−8.01K

Strike price

Held after

16.01K

Exercisable

—

2/12/2026

2026 Phantom Units

Direct

A · Award

Converts to

Common Units representing limited partner interests

23.61K shares

+23.61K

Strike price

Held after

23.61K

Exercisable

—

2/12/2026

2026 Performance Unit - TUR

Direct

A · Award

Converts to

Common Units representing limited partner interests

11.81K shares

+11.81K

Strike price

Held after

11.81K

Exercisable

—

2/12/2026

2026 Performance Unit - ROA

Direct

A · Award

Converts to

Common Units representing limited partner interests

11.81K shares

+11.81K

Strike price

Held after

11.81K

Exercisable

—

2/12/2026

Security	Converts To	Date	Type	Shares	Exercisable	Held After
2023 Phantom Units Direct	Common Units representing limited partner interests7.02K shares	2/12/2026	M · Option Exercise	−7.02K	—	0.00
2023 Performance Unit - TUR Direct	Common Units representing limited partner interests16.42K shares	2/12/2026	M · Option Exercise	−16.42K	—	0.00
2023 Performance Unit - ROA Direct	Common Units representing limited partner interests19.92K shares	2/12/2026	M · Option Exercise	−19.92K	—	0.00
2024 Phantom Units Direct	Common Units representing limited partner interests11.95K shares	2/12/2026	M · Option Exercise	−11.95K	—	11.95K
2025 Phantom Units Direct	Common Units representing limited partner interests8.01K shares	2/12/2026	M · Option Exercise	−8.01K	—	16.01K
2026 Phantom Units Direct	Common Units representing limited partner interests23.61K shares	2/12/2026	A · Award	+23.61K	—	23.61K
2026 Performance Unit - TUR Direct	Common Units representing limited partner interests11.81K shares	2/12/2026	A · Award	+11.81K	—	11.81K
2026 Performance Unit - ROA Direct	Common Units representing limited partner interests11.81K shares	2/12/2026	A · Award	+11.81K	—	11.81K

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)4

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

—

2025 Performance Unit-TUR

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

12.01K

Shares owned

12.01K

Exercise price

Expiration

—

Exercise window

—

2025 Performance Unit-ROA

Direct

Underlying security

Common Units representing limited partner interests

Underlying shares

12.01K

Shares owned

12.01K

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

—

Total

Underlying

59.88K

Owned

59.88K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
2024 Performance Unit - TUR Direct	Common Units representing limited partner interests	—	—	17.93K	17.93K
2025 Performance Unit-TUR Direct	Common Units representing limited partner interests	—	—	12.01K	12.01K
2025 Performance Unit-ROA Direct	Common Units representing limited partner interests	—	—	12.01K	12.01K
2024 Performance Unit - ROA Direct	Common Units representing limited partner interests	—	—	17.93K	17.93K
Total				59.88K	59.88K