Form 4 for AMPH Amphastar Pharmaceuticals, Inc.
Accepted 2025-11-25 00:00:00 ET · period of report 2025-11-25 · accession 0001047579-25-000006 · 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 | 2025-11-25 | 2025-11-25 | AMPH | PRINS RICHARD K | Dir | S - Sale+OE | $27.10 | -4,179 | 35.2K | -11% | -$113.3K |
| D | 2025-11-25 | 2025-11-25 | AMPH | PRINS RICHARD K | Dir | M - OptEx | $16.69 | +4,179 | 39.4K | +12% | +$69.7K |
| D | 2025-11-25 | 2025-11-25 | AMPH | PRINS RICHARD K | Dir | M - OptEx | $0.00 | -4,179 | 0 | -100% | $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 | 2025-11-25 | S | D | 4,179 | $27.10 | 35,183 | D | — | — | (F1) The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.10 to $27.125, 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. |
| 2 | Common | Common Stock | 2025-11-25 | M | A | 4,179 | $16.69 | 39,362 | D | — | — | |
| 3 | Derivative | Stock Option (right to buy) | 2025-11-25 | M | D | 4,179 | $0.00 | 0 | D | $16.69 · — to 2026-06-07 | 4,179 Common Stock | (F2) Shares subject to the option are fully vested and immediately exercisable. |