WES's three largest insider shareholders as of September 09, 2026 are Petroleum Corp /De/ Occidental (TenPercentOwner, 150.37Mn shares), Petroleum Corp /De/ Occidental (TenPercentOwner, 150.37Mn shares), Michael Ure (President Ceo, 539.40K shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Petroleum Corp /De/ Occidental | TenPercentOwner | 0 | 150,374,176 | 150,374,176 | 98.7% | 05 Feb, 2026 |
| 2 | Michael Ure | President Ceo | 664,809 | 0 | 664,809 | 0.4% | 20 May, 2024 |
| 3 | Christopher B. Dial | Svp, Gc And Secretary | 255,624 | 0 | 255,624 | 0.2% | 19 Feb, 2026 |
| 4 | Robert W. Bourne | Svp Chief Commercial Officer | 184,485 | 0 | 184,485 | 0.1% | 14 Feb, 2025 |
| 5 | Kristen S. Shults | Svp Chief Financial Officer | 143,752 | 0 | 143,752 | 0.1% | 13 Feb, 2026 |
| 6 | Catherine A. Green | Svp Chief Accounting Officer | 128,041 | 0 | 128,041 | 0.1% | 13 Feb, 2026 |
| 7 | Oscar K Brown | President Ceo | 102,555 | 0 | 102,555 | 0.1% | 13 Feb, 2026 |
| 8 | Daniel P. Holderman | Svp Chief Operating Officer | 91,384 | 0 | 91,384 | 0.1% | 13 Feb, 2026 |
| 9 | Craig W Collins | Svp Chief Operating Officer | 75,254 | 0 | 75,254 | 0.0% | 16 Aug, 2022 |
| 10 | Alejandro O Nebreda | Svp, Business Services | 64,357 | 0 | 64,357 | 0.0% | 14 Feb, 2024 |
| 11 | David J Schulte | Director | 59,626 | 0 | 59,626 | 0.0% | 13 Feb, 2026 |
| 12 | Kenneth F. Owen | Director | 56,826 | 0 | 56,826 | 0.0% | 13 Feb, 2026 |
| 13 | Lisa A Stewart | Director | 54,826 | 0 | 54,826 | 0.0% | 13 Feb, 2026 |
| 14 | Michael S. Forsyth | Svp, North Operations | 42,327 | 0 | 42,327 | 0.0% | 14 Feb, 2025 |
| 15 | Charles G. Griffie | Svp, Ops And Engineering | 18,694 | 0 | 18,694 | 0.0% | 16 Nov, 2021 |
| 16 | Robert G Phillips | Director | 5,296 | 0 | 5,296 | 0.0% | 12 Mar, 2026 |
| 17 | Frederick A. Forthuber | Director | 5,140 | 0 | 5,140 | 0.0% | 12 Aug, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 12 Aug, 2026 | Frederick A. Forthuber | Director | Acquired P | 5,140 | $48.62 | $249.91K | 5,140 | Direct |
| 11 Mar, 2026 | Robert G Phillips | Director | Acquired P | 1,250 | $40.19 | $50.24K | 5,296 | Direct |
| 12 Feb, 2026 | Christopher B. Dial | Svp, Gc And Secretary | Disposed F | 5,879 | $42.35 | $248.98K | 225,015 | Direct |
| 12 Feb, 2026 | David J Schulte | Director | Acquired M | 3,843 | $0.00 | $0 | 40,072 | Direct |
| 12 Feb, 2026 | Robert G Phillips | Director | Acquired M | 4,046 | $0.00 | $0 | 4,046 | Direct |
| 12 Feb, 2026 | Oscar K Brown | President Ceo | Acquired M | 24,022 | $0.00 | $0 | 95,950 | Direct |
| 12 Feb, 2026 | Kenneth F. Owen | Director | Acquired M | 3,843 | $0.00 | $0 | 41,772 | Direct |
| 12 Feb, 2026 | Daniel P. Holderman | Svp Chief Operating Officer | Acquired M | 10,819 | $0.00 | $0 | 46,567 | Direct |
| 12 Feb, 2026 | Lisa A Stewart | Director | Acquired M | 3,843 | $0.00 | $0 | 39,772 | Direct |
| 12 Feb, 2026 | Christopher B. Dial | Svp, Gc And Secretary | Acquired M | 10,819 | $0.00 | $0 | 180,208 | Direct |
| 12 Feb, 2026 | Frederick A. Forthuber | Director | Acquired A | 3,778 | $0.00 | $0 | 3,778 | Direct |
| 12 Feb, 2026 | Catherine A. Green | Svp Chief Accounting Officer | Acquired M | 7,018 | $0.00 | $0 | 83,733 | Direct |
| 12 Feb, 2026 | Kristen S. Shults | Svp Chief Financial Officer | Acquired M | 10,819 | $0.00 | $0 | 98,948 | Direct |
| 12 Feb, 2026 | Lisa A Stewart | Director | Disposed M | 3,843 | $0.00 | $0 | 0 | Direct |
| 12 Feb, 2026 | Oscar K Brown | President Ceo | Disposed F | 10,510 | $42.35 | $445.10K | 85,440 | Direct |
| 12 Feb, 2026 | Christopher B. Dial | Svp, Gc And Secretary | Disposed F | 4,258 | $42.35 | $180.33K | 175,950 | Direct |
| 12 Feb, 2026 | Kristen S. Shults | Svp Chief Financial Officer | Disposed F | 4,258 | $42.35 | $180.33K | 94,690 | Direct |
| 12 Feb, 2026 | David J Schulte | Director | Acquired A | 3,778 | $0.00 | $0 | 3,778 | Direct |
| 12 Feb, 2026 | Kenneth F. Owen | Director | Disposed M | 3,843 | $0.00 | $0 | 0 | Direct |
| 12 Feb, 2026 | Catherine A. Green | Svp Chief Accounting Officer | Disposed F | 2,762 | $42.35 | $116.97K | 80,971 | Direct |