4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0001415889-25-007241
CFO, EVP & TREASURER sold 4,231 shares at $27.54 ($116,515)
- CFO, EVP & TREASURER acquired 7,490 shares (option exercise)
- CFO, EVP & TREASURER gave up 1,739 shares (to pay taxes)
- Traded under a Rule 10b5-1 plan
From the SEC's structured data for this filing
Trades in this filing
| Insider | Date | Transaction | Shares | Price | Value | Owned after | D/I |
|---|---|---|---|---|---|---|---|
| PETERS WILLIAM J CFO, EVP & TREASURER | 2025-03-04 | Option exercise 10b5-1 | +7,490 | $13.35 | $99,992 | 101,594 | D |
| PETERS WILLIAM J CFO, EVP & TREASURER | 2025-03-04 | Sale 10b5-1 | −4,231 | $27.54 | $116,515 | 97,363 | D |
| PETERS WILLIAM J CFO, EVP & TREASURER | 2025-03-04 | Shares withheld for taxes 10b5-1 | −1,739 | $27.62 | $48,031 | 95,624 | D |
| Derivatives | |||||||
| PETERS WILLIAM J CFO, EVP & TREASURER | 2025-03-04 | Option exercise · Employee Stock Option (right to buy) 10b5-1 | −7,490 | 0 | D | ||
| Open-market sales · 4,231 sh · avg $27.54 · $116,515 | |||||||
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