Updated Jul 16, 2026
Gunderson Thomas J. has filed 4 SEC Form 4 filings across 2 companies in the last 90 days — selling. Lifetime open-market sales: $722K.

Thomas J. Gunderson is named in SEC filings related to Merit Medical Systems Inc. as of May 19, 2026, indicating insider involvement with the company. Public biographical details (education, career history, and a confirmed title) are not readily available from widely accessible sources, so the biography is limited to his association with Merit Medical Systems as of the filing date.
| Role | Insider |
|---|---|
| Notability | 15/100 |
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-17 | TMDX | TransMedics Group, Inc. | S — Open-market sale | 9.6K | $75.06 | $722K |
| 2026-06-17 | TMDX | TransMedics Group, Inc. | M — Option exercise | 19.3K | $2.21 | $43K |
| 2026-05-22 | TMDX | TransMedics Group, Inc. | A — Grant or award | 2.9K | $0.00 | |
| 2026-05-21 | MMSI | MERIT MEDICAL SYSTEMS INC | M — Option exercise | 7.5K | $52.17 | $391K |
| 2026-05-21 | MMSI | MERIT MEDICAL SYSTEMS INC | M — Option exercise | 13.8K | $52.17 | $717K |
| 2026-05-19 | MMSI | MERIT MEDICAL SYSTEMS INC | A — Grant or award | 3.5K | $0.00 |
Thomas J. Gunderson is named in SEC filings related to Merit Medical Systems Inc. as of May 19, 2026, indicating insider involvement with the company. Public biographical details (education, career history, and a confirmed title) are not readily available from widely accessible sources, so the biography is limited to his association with Merit Medical Systems as of the filing d…
4 primary Form 4 filings in the last 90 days, covering 2 companies.
Recorded transactions: 0 open-market purchases () and 1 open-market sales ($722K) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Open the live Gunderson Thomas J. profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.