# Amphastar Pharmaceuticals, Inc. (AMPH) insider trading, Q3 2026

Canonical: https://sec-api.dev/insider-trading/amph

> 8 non-derivative transactions: 0 purchases, 5 sales ($764K). CIK 1297184.

| Date | Insider | Relationship | Code | Shares | Price | Owned after | Filing |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 2026-09-21 | PETERS WILLIAM J | Director, Officer | S | 4139.0 | 25.0 | 168707.0 | https://www.sec.gov/Archives/edgar/data/1297184/000126313626000014/0001263136-26-000014-index.htm |
| 2026-09-16 | Zhou Rong | Officer | S | 10000.0 | 23.94 | 169203.0 | https://www.sec.gov/Archives/edgar/data/1297184/000164532626000014/0001645326-26-000014-index.htm |
| 2026-09-16 | Zhou Rong | Officer | M | 10000.0 | 13.35 | 179203.0 | https://www.sec.gov/Archives/edgar/data/1297184/000164532626000014/0001645326-26-000014-index.htm |
| 2026-09-02 | Zhou Rong | Officer | S | 3187.0 | 23.63 | 169203.0 | https://www.sec.gov/Archives/edgar/data/1297184/000164532626000012/0001645326-26-000012-index.htm |
| 2026-08-11 | PRINS RICHARD K | Director | S | 7973.0 | 20.3 | 29625.0 | https://www.sec.gov/Archives/edgar/data/1297184/000104757926000005/0001047579-26-000005-index.htm |
| 2026-08-07 | PETERS WILLIAM J | Director, Officer | M | 5053.0 | 19.79 | 181026.0 | https://www.sec.gov/Archives/edgar/data/1297184/000126313626000012/0001263136-26-000012-index.htm |
| 2026-08-07 | PETERS WILLIAM J | Director, Officer | S | 8180.0 | 22.48 | 172846.0 | https://www.sec.gov/Archives/edgar/data/1297184/000126313626000012/0001263136-26-000012-index.htm |
| 2026-07-09 | Pierce Anthony T | Director | A | 7886.0 | 0.0 | 7886.0 | https://www.sec.gov/Archives/edgar/data/1297184/000214130326000005/0002141303-26-000005-index.htm |

Source: https://www.sec.gov/data-research/sec-markets-data/insider-transactions-data-sets

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