SEC Form 4 · accession 0001263136-26-000014
Amphastar Pharmaceuticals, Inc. · AMPH
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
William J Peters
Officer — CFO, EVP & TREASURER · Director
Period of report
Sep 21, 2026
Accepted (ET)
Sep 23, 2026 · 6:02 pm EDT
Rule 10b5-1 plan
yes — trade under a plan
Issuer CIK
0001297184
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common Stock | Sep 21, 2026 | S | 4,139 | $25.00 | D | 168,707 | D |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F1The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2026.