Form 4 for AMPH Amphastar Pharmaceuticals, Inc.
Accepted 2026-09-17 18:19:48 ET · period of report 2026-09-16 · accession 0001645326-26-000014 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-09-17 18:19 | 2026-09-16 | AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | M - OptEx | $13.35 | +10.0K | 179.2K | +6% | +$133.5K |
| D | 2026-09-17 18:19 | 2026-09-16 | AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | S - Sale+OE | $23.94 | -10.0K | 169.2K | -6% | -$239.4K |
| D | 2026-09-17 18:19 | 2026-09-16 | AMPH | Zhou Rong | SENIOR EVP, PRODUCTION CENTER | M - OptEx | $0.00 | -10.0K | 19.4K | -34% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-09-16 | M | A | 10,000 | $13.35 | 179,203 | D | — | — | |
| 2 | Common | Common Stock | 2026-09-16 | S | D | 10,000 | $23.94 | 169,203 | D | — | — | (F1) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.83 to $24.05, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. |
| 3 | Derivative | Employee Stock Option (right to buy) | 2026-09-16 | M | D | 10,000 | $0.00 | 19,424 | D | $13.35 · — to 2027-03-16 | 10,000 Common Stock | (F4) Shares subject to the option are fully vested and immediately exercisable. |