| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Brown Oscar K | President & CEO, Director | 9950 WOODLOCH FOREST DR., THE WOODLANDS | /s/ Philip C. Neisel, as attorney-in-fact | 13 Feb 2026 | 0001715126 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WES | Common Units representing limited partner interests | Options Exercise | $0 | +24,022 | +33% | $0.000000 | 95,950 | 12 Feb 2026 | Direct | |
| transaction | WES | Common Units representing limited partner interests | Tax liability | $445,098 | -10,510 | -11% | $42.35 | 85,440 | 12 Feb 2026 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | WES | 2025 Phantom Units | Options Exercise | $0 | -24,022 | -33% | $0.000000 | 48,041 | 12 Feb 2026 | Common Units representing limited partner interests | 24,022 | Direct | F1, F3 | |
| transaction | WES | 2026 Phantom Units | Award | $0 | +94,451 | $0.000000 | 94,451 | 12 Feb 2026 | Common Units representing limited partner interests | 94,451 | Direct | F1, F3 | ||
| transaction | WES | 2026 Performance Unit - TUR | Award | $0 | +47,226 | $0.000000 | 47,226 | 12 Feb 2026 | Common Units representing limited partner interests | 47,226 | Direct | F5 | ||
| transaction | WES | 2026 Performance Unit - ROA | Award | $0 | +47,226 | $0.000000 | 47,226 | 12 Feb 2026 | Common Units representing limited partner interests | 47,226 | Direct | F5 | ||
| holding | WES | 2024 Phantom Units | 105,318 | 12 Feb 2026 | Common Units representing limited partner interests | 105,318 | Direct | F1, F2 | ||||||
| holding | WES | 2025 Performance Unit-TUR | 36,032 | 12 Feb 2026 | Common Units representing limited partner interests | 36,032 | Direct | F4 | ||||||
| holding | WES | 2025 Performance Unit-ROA | 36,032 | 12 Feb 2026 | Common Units representing limited partner interests | 36,032 | Direct | F4 |
| Id | Content |
|---|---|
| F1 | Each Phantom Unit is the economic equivalent of one WES Common Unit representing limited partnership interests, and upon vesting, will entitle the holder to receive a common unit or, at the discretion of the Board of Directors of the General Partner, cash equal to the Fair Market Value of a Common Unit. |
| F2 | These Phantom Units vest ratably over a three-year period on October 28th each year, and will pay distribution equivalent rights in cash on a current basis. |
| F3 | These Phantom Units vest ratably over a three-year period on February 12th of each year, and will pay distribution equivalent rights in cash on a current basis. |
| F4 | Each performance-based unit represents the right to receive, following vesting, between 0% and 200% of one WES Common Unit based upon the achievement of pre-established performance metrics over a 3-year performance period. |
| F5 | Each performance-based unit represents the right to receive, following vesting, between 0% and 200% of one WES Common Unit (or cash equivalent) based upon the achievement of pre-established performance metrics over a 3-year performance period. |