Insiders / Peters William J
Peters William J
CIK 1263136personinsider
Companies
1
First seen
Mar 6, 2026
Last activity
Mar 17, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Amphastar Pharmaceuticals, Inc. · AMPH | 175,063 | — |
All securities held
2 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Amphastar Pharmaceuticals, Inc. | Common Stock | 175,063 |
| Amphastar Pharmaceuticals, Inc. | Employee Stock Option (right to buy)Derivative | 121,071 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 10, 2026 | Other | AMPH Amphastar Pharmaceuticals, Inc. Common Stock | $62.3K | -3K -1.83% | 177,036 0.42% of shares | low |
| Mar 6, 2026 | Other | AMPH Amphastar Pharmaceuticals, Inc. Common Stock | $41.5K | -2K -1.73% | 121,640 0.29% of shares | low |
| Mar 15, 2026 | Other | AMPH Amphastar Pharmaceuticals, Inc. Common Stock | $35.9K | -2K -1.11% | 175,063 0.41% of shares | low |
| Mar 4, 2026 | Other | AMPH Amphastar Pharmaceuticals, Inc. Common Stock | $34.8K | -2K -1.39% | 123,786 0.29% of shares | low |
| Mar 9, 2026 | Grant | AMPH Amphastar Pharmaceuticals, Inc. Common Stock | $0 | +59K +48.25% | 180,333 0.42% of shares | low |
| Mar 9, 2026 | Grant | AMPH Amphastar Pharmaceuticals, Inc. Employee Stock Option (right to buy) | — | +121K | 121,071 0.28% of shares | low |