David Dantzker is Director at SURMODICS INC (SRDX). They have made 6 open-market trades across 2 companies since 2008, most recently 2025-11-19.
CIK 0001245926
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.
3 open-market purchases totalling $1.4M since 2008, against 3 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| SRDX | SELL | 2022-11-14 | 2022-11-15 | $33.00 | $92K | -0.2% | +3.4% | -26.6% |
| SRDX | SELL | 2021-11-24 | 2021-11-29 | $47.01 | $327K | -1.2% | +9.2% | +0.8% |
| SRDX | SELL | 2015-05-11 | 2015-05-13 | $24.75 | $289K | -8.1% | -4.8% | -4.8% |
| SRDX | BUY | 2010-12-15 | 2011-01-05 | $11.01 | $6K | -8.1% | -4.8% | -4.8% |
| NHPI.OB | BUY | 2008-06-10 | 2008-06-12 | $0.25 | $700K | N/A | N/A | N/A |
| NHPI.OB | BUY | 2008-06-06 | 2008-06-11 | $0.25 | $700K | N/A | N/A | N/A |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.