Mark A. Mccollum's most recent trade in Westlake Corporation was a trade of 2,184 Restricted Stock Units done . Disclosure was reported to the exchange on Aug. 14, 2026.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Westlake Corp | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 14 Aug 2026 | 2,184 | 2,184 | - | - | Restricted Stock Units | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 08 Aug 2026 | 2,168 | 11,824 (0%) | 0% | - | Common Stock | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 08 Aug 2026 | 2,168 | 2,168 | - | - | Restricted Stock Units | |
| Seadrill Ltd | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 03 Jun 2026 | 2,618 | 2,618 | - | - | Restricted Stock Units | |
| ONEOK | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 92.15 per share. | 20 May 2026 | 1,845 | 2,572 (0%) | 0% | 92.2 | 170,017 | Common Stock, par value $0.01 |
| Seadrill Ltd | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 14 May 2026 | 4,860 | 7,269 | - | - | Common Shares | |
| Seadrill Ltd | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 14 May 2026 | 4,860 | 0 | - | - | Restricted Stock Units | |
| ONEOK | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 78.00 per share. | 23 Jan 2026 | 727 | 727 (0%) | 0% | 78 | 56,706 | Common Stock, par value $0.01 |
| Westlake Corp | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 08 Aug 2025 | 2,168 | 2,168 | - | - | Restricted Stock Units | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 08 Aug 2025 | 1,128 | 9,656 (0%) | 0% | - | Common Stock | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 08 Aug 2025 | 1,128 | 0 | - | - | Restricted Stock Units | |
| Seadrill Ltd | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 14 May 2025 | 4,860 | 4,860 | - | - | Restricted Stock Units | |
| Seadrill Ltd | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 17 Apr 2025 | 2,409 | 2,409 | - | - | Common Shares | |
| Seadrill Ltd | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 17 Apr 2025 | 2,409 | 0 | - | - | Restricted Stock Units | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 09 Aug 2024 | 1,136 | 8,528 (0%) | 0% | - | Common Stock | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 09 Aug 2024 | 1,136 | 0 | - | - | Restricted Stock Units | |
| Westlake Corp | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 09 Aug 2024 | 1,128 | 1,128 | - | - | Restricted Stock Units | |
| Marathon Oil Corporation | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2024 | 8,130 | 16,299 (0%) | 0% | 0 | Common Stock | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 11 Aug 2023 | 1,446 | 0 | - | - | Restricted Stock Units | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 11 Aug 2023 | 1,446 | 7,392 (0%) | 0% | - | Common Stock | |
| Westlake Corp | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 11 Aug 2023 | 1,136 | 1,136 | - | - | Restricted Stock Units | |
| Marathon Oil Corporation | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Mar 2023 | 7,754 | 8,169 (0%) | 0% | 0 | Common Stock | |
| Marathon Oil Corporation | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 01 Dec 2022 | 415 | 415 (0%) | 0% | 0 | Common Stock | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 12 Aug 2022 | 1,763 | 0 | - | - | Restricted Stock Units | |
| Westlake Corp | Mark A. Mccollum | Director | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 12 Aug 2022 | 1,763 | 5,946 (0%) | 0% | - | Common Stock | |
| Westlake Corp | Mark A. Mccollum | Director | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 12 Aug 2022 | 1,446 | 1,446 | - | - | Restricted Stock Units | |
| Westlake Corp | Mark A. Mccollum | Director | Gift of securities by or to the insider at price $ 0.00 per share. | 03 Mar 2022 | 3,000 | 4,183 (0%) | 0% | 0 | Common Stock |