SEC Form 4 · accession 0002141303-26-000005
Amphastar Pharmaceuticals, Inc. · AMPH
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Anthony T Pierce
Director
Period of report
Jul 9, 2026
Accepted (ET)
Jul 13, 2026 · 7:38 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001297184
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Jul 9, 2026 | A | 7,886 | $0.00 | A | 7,886 | D |
Table II — derivative securities
| Security | Conv. / exercise price | Date | Code | Shares | A/D | Exercisable | Expires | Underlying | Underlying shares | Owned after | D/I |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Stock Option (right to buy)F2 | $19.02 | Jul 9, 2026 | A | 16,646 | A | — | Jul 9, 2036 | Common Stock | 16,646 | 16,646 | D |
Explanation of responses
- F1The reported shares are represented by restricted stock units, or RSUs, all of which vest on July 9, 2027.
- F2All of the shares subject to the option vest on July 9, 2027.