David Maris is Director at Amphastar Pharmaceuticals, Inc. (AMPH). They have made 1 open-market trade across 1 company since 2020, most recently 2021-06-07.
CIK 0001814105
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.
1 open-market purchase totalling $20K since 2020, never a sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| AMPH | 19,170 | $495K |
Shares reported on the most recent Form 4, priced at the 2021-06-08 close.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMPH | BUY | 2020-08-14 | 2020-08-18 | $20.26 | $20K | -0.4% | -5.0% | -4.7% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.