WLKP (WESTLAKE CHEMICAL PARTNERS LP)
Insider Trading Activity
Every open-market purchase and sale reported by WLKP officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-13 | G STEPHEN FINLEY | Director | A | — | — |
| 2026-08-13 | RANDY WOELFEL | Director | A | — | — |
| 2026-08-13 | Lisa A. Friel | Director | A | — | — |
| 2026-08-07 | G STEPHEN FINLEY | Director | M | — | — |
| 2026-08-07 | Lisa A. Friel | Director | MIXED | — | — |
| 2026-08-07 | RANDY WOELFEL | Director | MIXED | — | — |
| 2026-08-07 | RANDY WOELFEL | Director | MIXED | — | — |
| 2026-08-07 | Lisa A. Friel | Director | MIXED | — | — |
| 2026-08-07 | G STEPHEN FINLEY | Director | M | — | — |
| 2025-08-29 | Jean-Marc Gilson | President and CEO | Buy | — | — |
| 2025-08-28 | Jean-Marc Gilson | President and CEO | Buy | — | — |
| 2025-08-28 | Jean-Marc Gilson | President and CEO | Buy | — | — |
| 2025-08-08 | Lisa A. Friel | Director | MIXED | — | — |
| 2025-08-08 | RANDY WOELFEL | Director | MIXED | — | — |
| 2025-08-08 | G STEPHEN FINLEY | Director | M | — | — |
| 2025-05-30 | James Chao | Senior Chairman | Sell | — | — |
| 2025-05-29 | James Chao | Senior Chairman | Sell | — | — |
| 2024-09-03 | Jean-Marc Gilson | President and CEO | Buy | — | — |
| 2024-08-28 | Jean-Marc Gilson | President and CEO | Buy | — | — |
| 2024-08-26 | Jean-Marc Gilson | President and CEO | Buy | — | — |
| 2024-08-14 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2024-08-12 | Lisa A. Friel | Director | MIXED | — | — |
| 2024-08-12 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2024-08-12 | RANDY WOELFEL | Director | MIXED | — | — |
| 2024-08-12 | G STEPHEN FINLEY | Director | M | — | — |
| 2024-08-08 | RANDY WOELFEL | Director | A | — | — |
| 2024-08-08 | G STEPHEN FINLEY | Director | A | — | — |
| 2024-08-08 | Lisa A. Friel | Director | A | — | — |
| 2024-06-03 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2024-05-14 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2024-05-13 | Lisa A. Friel | Director | MIXED | — | — |
| 2024-05-10 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2024-04-01 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2024-03-25 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2024-03-07 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2024-02-26 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-11-13 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-11-08 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-08-31 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-08-24 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-08-23 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-08-21 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-08-16 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-08-11 | Lisa A. Friel | Director | A | — | — |
| 2023-08-11 | G STEPHEN FINLEY | Director | M | — | — |
| 2023-08-11 | RANDY WOELFEL | Director | MIXED | — | — |
| 2023-08-11 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-08-09 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| 2023-05-11 | Lisa A. Friel | Director | A | — | — |
| 2023-03-14 | Andrew Kenner | SVP, Olefin Material & Corp Pr | Buy | — | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| — | Senior Chairman | 15,524,099 | — |
| — | President & CEO | 193,710 | — |
| — | SVP, Olefin Material & Corp Pr | 185,000 | — |
| — | Director | 125,000 | — |
| — | Director | 36,935 | — |
| — | Director | 28,918 | — |
| — | Director | 25,491 | — |
| — | Director | 19,427 | — |
| — | SVP, CFO | 14,000 | — |
| — | Director | 12,168 | — |
| — | VP, General Counsel | 12,000 | — |
| — | President and CEO | 11,803 | — |
| — | SVP, Olefins | 10,300 | — |
| — | Sr VP Adminstration | 10,000 | — |
| — | Director | 5,000 | — |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the WLKP quote page; the site-wide leaderboard is on the insider transactions hub.