Insider · CIK 0001215888
Mark A McCollum
Files at: WLK, SDRL, WFRD, AROC, HAL. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 8, 2026 MForm 4 → | Aug 10, 1:52 pm EDT | WESTLAKE CORPWLK | 2,168 | — | — | 11,824 | — |
Reported trades — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 AForm 4 → | Aug 17, 12:27 pm EDT | WESTLAKE CORPWLK | 2,184 | — | — | 2,184 | — | |
| Aug 8, 2026 MForm 4 → | Aug 10, 1:52 pm EDT | WESTLAKE CORPWLK | 2,168 | — | — | 2,168 | — | |
| Jun 3, 2026 AForm 4 → | Jun 5, 11:54 am EDT | SEADRILL LtdSDRL | 2,618 | — | — | 2,618 | — |