Thomas J. Gunderson is Director at MERIT MEDICAL SYSTEMS INC (MMSI). They have made 1 open-market trade across 1 company since 2026, most recently 2026-06-15.
CIK 0001708144
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| MMSI | 60,741 | $5.5M |
| TMDX | 16,642 | $1.2M |
| Total | $6.7M |
Shares reported on the most recent Form 4, priced at the 2026-06-17 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| TMDX | SELL | 2026-06-15 | 2026-06-17 | $75.06 | $722K | -11.9% | -1.8% | +16.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.