Thomas M. Burns serves as Executive at XOMA Corp, where they oversee executive responsibilities. Since joining the company, Thomas M. Burns has executed 49 insider transactions totaling $3.0M, demonstrating a bearish approach to their equity position. Their most recent transaction on Sep 22, 2025 involved selling 15 shares valued at $554.
Thomas M. Burns currently holds 30,094 shares of XOMA Corp (XOMA), valued at approximately $0. This represents their equity stake as Executive.
Based on SEC Form 4 filings, Thomas M. Burns has been a net seller of XOMA stock. They have purchased $0 and sold $3.0M worth of shares.
Thomas M. Burns's most recent insider trade was on Sep 22, 2025, when they sold 15 shares at $36.93 per share.
Get notified when new Form 4 filings are submitted
| $35.98 |
| Discretionary |
| Sep 22, 2025 | XOMA | $552 | Sale | 15 | $36.81 | Discretionary |
| Sep 19, 2025 | XOMA | $0 | Option Exercise | 11,846 | $N/A | Discretionary |
| Jul 15, 2022 | XOMA | $63.3K | Sale | 2,000 | $31.66 | Discretionary |
| Jul 15, 2022 | XOMA | $8.1K | Option Exercise | 2,000 | $4.03 | Discretionary |
| Mar 23, 2022 | XOMA | $649 | Option Exercise | 161 | $4.03 | Discretionary |
| Mar 23, 2022 | XOMA | $4.8K | Sale | 161 | $30.00 | Discretionary |
| Mar 22, 2022 | XOMA | $9.4K | Option Exercise | 2,339 | $4.03 | Discretionary |
| Mar 22, 2022 | XOMA | $70.2K | Sale | 2,339 | $30.02 | Discretionary |
| Mar 21, 2022 | XOMA | $48.4K | Option Exercise | 12,000 | $4.03 | Discretionary |
| Mar 21, 2022 | XOMA | $348.1K | Sale | 12,000 | $29.01 | Discretionary |
| Apr 9, 2021 | XOMA | $25.0K | Award | 1,000 | $25.00 | Discretionary |
| Dec 15, 2020 | XOMA | $60.5K | Option Exercise | 15,000 | $4.03 | Discretionary |
| Dec 15, 2020 | XOMA | $235.7K | Sale | 5,607 | $42.04 | Discretionary |
| Dec 15, 2020 | XOMA | $50.0K | Award | 2,000 | $25.00 | Discretionary |
| Dec 15, 2020 | XOMA | $385.3K | Sale | 9,393 | $41.02 | Discretionary |
| Nov 23, 2020 | XOMA | $168.8K | Sale | 5,125 | $32.93 | Discretionary |
| Nov 23, 2020 | XOMA | $20.7K | Option Exercise | 5,125 | $4.03 | Discretionary |
| Nov 20, 2020 | XOMA | $27.7K | Option Exercise | 6,875 | $4.03 | Discretionary |
| Nov 20, 2020 | XOMA | $14.2K | Sale | 426 | $33.35 | Discretionary |
| Nov 20, 2020 | XOMA | $209.3K | Sale | 6,449 | $32.46 | Discretionary |
| Nov 5, 2020 | XOMA | $20.0K | Sale | 726 | $27.50 | Discretionary |
| Nov 5, 2020 | XOMA | $32.2K | Option Exercise | 8,000 | $4.03 | Discretionary |
| Nov 5, 2020 | XOMA | $189.0K | Sale | 7,274 | $25.98 | Discretionary |
| Sep 19, 2019 | XOMA | $16.8K | Option Exercise | 4,171 | $4.03 | Discretionary |
| Sep 19, 2019 | XOMA | $78.4K | Sale | 3,671 | $21.35 | Discretionary |
| Sep 19, 2019 | XOMA | $10.9K | Sale | 500 | $21.84 | Discretionary |
| Sep 18, 2019 | XOMA | $84.1K | Sale | 3,829 | $21.96 | Discretionary |
| Sep 18, 2019 | XOMA | $15.4K | Option Exercise | 3,829 | $4.03 | Discretionary |