MCCOLLUM MARK A
SEC CIK 1215888 · EDGAR
Most active insiders at WLK, 12 months
| # | Insider | Title | Bought | Sold |
|---|---|---|---|---|
| 1 | Chao Albert | Executive COB, Dir | — | $6.13M |
| 2 | Bender Mark Steven | EVP, CFO | — | $3.60M |
| 3 | Buesinger Robert F. | EVP, PEM Segment Head | — | $461.0K |
| 4 | Szwejbka Scott Thomas | SVP, HIP Segment Head | — | — |
| 5 | Holy Jeffrey Adam | VP, CAO | — | — |
| 6 | Chao Catherine T. | Dir | — | — |
| 7 | Sabat Carolyn Chao | Dir | — | — |
| 8 | Chao John Tsung-chen | Dir | — | — |
| 9 | Chao David Tsung-Hung | Dir | — | — |
| 10 | Ederington L. Benjamin | EVP, Legal, External Affairs | — | — |
| 17 | MCCOLLUM MARK A | Dir | — | — |
Transactions 11
| X | Filed | Traded | Ticker | Company | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-08-10 13:52 | 2026-08-08 | WLK | WESTLAKE CORP | MCCOLLUM MARK A | Dir | M - OptEx | — | +2,168 | 11.8K | +22% | — |
| 2026-05-22 09:03 | 2026-05-20 | OKE | Oneok | MCCOLLUM MARK A | Dir | A - Grant | $92.15 | +1,845 | 2,572 | +254% | +$170.0K | |
| D | 2026-05-18 10:58 | 2026-05-14 | SDRL | SEADRILL Ltd | MCCOLLUM MARK A | Dir | M - OptEx | — | +4,860 | 7,269 | +202% | — |
| 2026-01-27 | 2026-01-23 | OKE | Oneok | MCCOLLUM MARK A | Dir | A - Grant | $78.00 | +727 | 727 | New | +$56.7K | |
| D | 2025-08-11 | 2025-08-09 | WLK | WESTLAKE CORP | MCCOLLUM MARK A | Dir | M - OptEx | — | +1,128 | 9,656 | +13% | — |
| D | 2025-04-21 | 2025-04-17 | SDRL | SEADRILL Ltd | MCCOLLUM MARK A | Dir | M - OptEx | — | +2,409 | 2,409 | New | — |
| D | 2024-08-12 | 2024-08-11 | WLK | WESTLAKE CORP | MCCOLLUM MARK A | Dir | M - OptEx | — | +1,136 | 8,528 | +15% | — |
| D | 2023-08-14 | 2023-08-12 | WLK | WESTLAKE CORP | MCCOLLUM MARK A | Dir | M - OptEx | — | +1,446 | 7,392 | +24% | — |
| D | 2022-08-15 | 2022-08-13 | WLK | WESTLAKE CORP | MCCOLLUM MARK A | Dir | M - OptEx | — | +1,763 | 5,946 | +42% | — |
| 2022-03-04 | 2022-03-03 | WLK | WESTLAKE CORP | MCCOLLUM MARK A | Dir | G - Gift | $0.00 | -3,000 | 4,183 | -42% | $0 | |
| D | 2021-08-16 | 2021-08-14 | WLK | WESTLAKE CORP | MCCOLLUM MARK A | Dir | M - OptEx | — | +2,400 | 7,183 | +50% | — |
Purchase Sale Sale after option exercise All abbreviations