MCCOLLUM MARK A (CIK 1215888) reported 6 SEC Form 4 insider transactions across 3 companies over the past 18 months (most recent 2026-08-10). Recent activity: Buy WLK (2,168 shares), Buy OKE (1,845 shares), Buy SDRL (4,860 shares), Buy OKE (727 shares), Buy WLK (1,128 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-10 | WESTLAKE CORP (WLK) | Director | Buy | 2,168 | $0 |
| 2026-05-22 | ONEOK INC /NEW/ (OKE) | Director | Buy | 1,845 | $170,017 |
| 2026-05-18 | Seadrill Ltd (SDRL) | Director | Buy | 4,860 | $0 |
| 2026-01-27 | ONEOK INC /NEW/ (OKE) | Director | Buy | 727 | $56,706 |
| 2025-08-11 | WESTLAKE CORP (WLK) | Director | Buy | 1,128 | $0 |
| 2025-04-21 | Seadrill Ltd (SDRL) | Director | Buy | 2,409 | $0 |
Source: SEC Form 4 filings · as of 2026-08-10