Who
Thomas J. Gunderson
Director
Company insider
Files Form 4 as: Director, TransMedics Group; Director, Merit Medical Systems.
In numbers
- Trades disclosed
- 43
- Buys
- 0
- Sells
- 2
- Bought
- $0
- Sold
- $2.8M
- Companies
- 2
- Companies where not an officer
- 2
- First trade
- 7 Jun 2018
- Last trade
- 15 Jun 2026
- Last filed
- 17 Jun 2026
Companies traded
Activity over time
1 Nov 2024 – 1 Oct 2026
Buys above the line, sells below, each month.
Every trade
| Traded | Company | What | Amount | |
|---|---|---|---|---|
| 15 Jun 2026filed 17 Jun 2026 | TMDX TransMedics GroupMedical Devices | SEC FORM 4 Code M | $43K19,285 at $2.21 | filing |
| 15 Jun 2026filed 17 Jun 2026 | TMDX TransMedics GroupMedical Devices | SEC FORM 4 Sold | $722K9,624 at $75.06 | filing |
| 15 Jun 2026filed 17 Jun 2026 | TMDX TransMedics Groupoption or derivative · Medical Devices | SEC FORM 4 Code M | —19,285 at $0.00 | filing |
| 15 Jun 2026filed 17 Jun 2026 | TMDX TransMedics Groupoption or derivative · Medical Devices | SEC FORM 4 Code M | —19,285 at $0.00 | filing |
| 15 Jun 2026filed 17 Jun 2026 | TMDX TransMedics GroupMedical Devices | SEC FORM 4 Code M | $43K19,285 at $2.21 | filing |
| 15 Jun 2026filed 17 Jun 2026 | TMDX TransMedics GroupMedical Devices | SEC FORM 4 Sold | $722K9,624 at $75.06 | filing |
| 20 May 2026filed 22 May 2026 | TMDX TransMedics GroupMedical Devices | SEC FORM 4 Code A | —2,922 at $0.00 | filing |
| 20 May 2026filed 22 May 2026 | TMDX TransMedics GroupMedical Devices | SEC FORM 4 Code A | —2,922 at $0.00 | filing |
| 20 May 2026filed 21 May 2026 | MMSI Merit Medical SystemsMedical Devices | SEC FORM 4 Code M | $717K13,750 at $52.17 | filing |
| 20 May 2026filed 21 May 2026 | MMSI Merit Medical SystemsMedical Devices | SEC FORM 4 Code M | $391K7,500 at $52.17 | filing |
| 20 May 2026filed 21 May 2026 | MMSI Merit Medical Systemsoption or derivative · Medical Devices | SEC FORM 4 Code M | —13,750 at $0.00 | filing |
| 20 May 2026filed 21 May 2026 | MMSI Merit Medical Systemsoption or derivative · Medical Devices | SEC FORM 4 Code M | —13,750 at $0.00 | filing |
| 20 May 2026filed 21 May 2026 | MMSI Merit Medical Systemsoption or derivative · Medical Devices | SEC FORM 4 Code M | —7,500 at $0.00 | filing |
| 20 May 2026filed 21 May 2026 | MMSI Merit Medical Systemsoption or derivative · Medical Devices | SEC FORM 4 Code M | —7,500 at $0.00 | filing |
| 20 May 2026filed 21 May 2026 | MMSI Merit Medical SystemsMedical Devices | SEC FORM 4 Code M | $717K13,750 at $52.17 | filing |
| 20 May 2026filed 21 May 2026 | MMSI Merit Medical SystemsMedical Devices | SEC FORM 4 Code M | $391K7,500 at $52.17 | filing |
| 18 May 2026filed 19 May 2026 | MMSI Merit Medical SystemsMedical Devices | SEC FORM 4 Code A | —3,457 at $0.00 | filing |
| 18 May 2026filed 19 May 2026 | MMSI Merit Medical SystemsMedical Devices | SEC FORM 4 Code A | —3,457 at $0.00 | filing |
| 22 May 2025filed 23 May 2025 | TMDX TransMedics GroupMedical Devices | SEC FORM 4 Code A | —2,134 at $0.00 | filing |
| 15 May 2025filed 19 May 2025 | MMSI Merit Medical SystemsMedical Devices | SEC FORM 4 Code A | —2,152 at $0.00 | filing |
News
TransMedics Group (NASDAQ:TMDX) and Cerus (NASDAQ:CERS) Head-To-Head ContrastTMDX · themarketsdaily.com · 13 Oct 2026TransMedics Group (NASDAQ:TMDX) Research Coverage Started at BarclaysTMDX · themarketsdaily.com · 10 Oct 2026
0 headlines in the last 90 days name Thomas J. Gunderson; 2 articles from the last 14 days about the 1 company they traded most, at most three about any one of them.