AMPH
Amphastar Pharmaceuticals, Inc.
4 disclosed insider filings · 3 distinct insiders · latest Aug 12, 2026
Total filings
4
3 insiders
Insider buys
0
$0
Insider sells
2
$346K
Grants & other
0
$0
All disclosed filings
Same-day tranches are grouped per insider - the Lots column shows how many individual executions a row covers; Price is the value-weighted average.
| Filed | Tx date | Insider | Type | Qty | Avg price | Value | Lots | Source |
|---|---|---|---|---|---|---|---|---|
| Aug 12, 2026 | Aug 11, 2026 | Richard K Prins INSIDER | SELL | 7,973 | $20.3 | $162K | — | EDGAR |
| Aug 11, 2026 | Aug 7, 2026 | William J Peters INSIDER | SELL | 8,180 | $22.48 | $184K | — | EDGAR |
| Aug 11, 2026 | Aug 7, 2026 | William J Peters INSIDER | OTHER | 5,053 | $19.79 | $100K | — | EDGAR |
| Jul 13, 2026 | Jul 9, 2026 | Anthony T Pierce INSIDER | OTHER | 7,886 | — | — | — | EDGAR |