Howard Lee is Director at Amphastar Pharmaceuticals, Inc. (AMPH). They have made 17 open-market trades across 1 company since 2014, most recently 2026-06-02.
CIK 0001379941
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 $65K since 2014, against 16 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| AMPH | SELL | 2023-06-01 | 2023-06-05 | $45.02 | $1.5M | +13.1% | +24.9% | +11.5% |
| AMPH | SELL | 2022-06-06 | 2022-06-07 | $37.79 | $778K | -24.4% | -12.7% | -32.0% |
| AMPH | SELL | 2022-05-23 | 2022-05-25 | $34.93 | $349K | +14.6% | -12.0% | -10.3% |
| AMPH | SELL | 2021-06-07 | 2021-06-08 | $19.29 | $456K | +3.8% | +5.0% | -3.2% |
| AMPH | SELL | 2021-05-20 | 2021-05-24 | $19.74 | $395K | -4.8% | +2.9% | -2.8% |
| AMPH | SELL | 2020-05-22 | 2020-05-27 | $18.48 | $370K | +6.0% | +13.9% | +6.8% |
| AMPH | SELL | 2020-05-20 | 2020-05-22 | $18.44 | $840K | +1.2% | +12.6% | +7.7% |
| AMPH | SELL | 2018-12-07 | 2018-12-07 | $21.89 | $203K | -5.6% | -5.6% | +8.5% |
| AMPH | SELL | 2018-12-06 | 2018-12-07 | $21.22 | $212K | -5.6% | -5.6% | +8.5% |
| AMPH | SELL | 2018-12-04 | 2018-12-07 | $21.73 | $1.2M | -5.6% | -5.6% | +8.5% |
| AMPH | SELL | 2018-12-04 | 2018-12-07 | $21.85 | $196K | -5.6% | -5.6% | +8.5% |
| AMPH | SELL | 2016-11-15 | 2016-11-16 | $20.76 | $374K | -4.6% | -1.4% | -17.8% |
| AMPH | SELL | 2016-11-14 | 2016-11-16 | $20.56 | $411K | -4.6% | -1.4% | -17.8% |
| AMPH | SELL | 2016-11-14 | 2016-11-16 | $20.69 | $1.2M | -4.6% | -1.4% | -17.8% |
| AMPH | SELL | 2016-09-01 | 2016-09-02 | $18.78 | $390K | -0.0% | +3.6% | +5.4% |
| AMPH | SELL | 2015-12-15 | 2015-12-17 | $14.34 | $552K | -12.7% | -14.4% | -13.6% |
| AMPH | BUY | 2014-08-25 | 2014-08-27 | $10.84 | $65K | -12.7% | -2.5% | -2.5% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.