Form 4 for AMPH Amphastar Pharmaceuticals, Inc.
Accepted 2025-03-18 00:00:00 ET · period of report 2025-03-14 · accession 0001415889-25-008523 · 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 | 2025-03-18 | 2025-03-14 | AMPH | Zhang Jack Y. | CEO, CSO, Dir, 10% | M - OptEx | $14.69 | +290.5K | 2.90M | +11% | +$4.27M |
| DM | 2025-03-18 | 2025-03-14+ | AMPH | Zhang Jack Y. | CEO, CSO, Dir, 10% | F - Tax | $26.73 | -252.2K | 2.65M | -9% | -$6.74M |
| DMI | 2025-03-18 | 2025-03-14+ | AMPH | Zhang Jack Y. | CEO, CSO, Dir, 10% | F - Tax | $26.70 | -174.0K | 1.19M | -13% | -$4.65M |
| DI | 2025-03-18 | 2025-03-14 | AMPH | Zhang Jack Y. | CEO, CSO, Dir, 10% | M - OptEx | $14.69 | +211.2K | 1.36M | +18% | +$3.10M |
| D | 2025-03-18 | 2025-03-14 | AMPH | Zhang Jack Y. | CEO, CSO, Dir, 10% | M - OptEx | $0.00 | -290.5K | 0 | -100% | $0 |
| DI | 2025-03-18 | 2025-03-14 | AMPH | Zhang Jack Y. | CEO, CSO, Dir, 10% | M - OptEx | $0.00 | -211.2K | 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 | 2025-03-14 | M | A | 290,477 | $14.69 | 2,899,859 | D | — | — | |
| 2 | Common | Common Stock | 2025-03-14 | F | D | 226,285 | $26.66 | 2,673,574 | D | — | — | (F1) The reported shares were withheld to pay the exercise price and withholding taxes incurred in connection with the exercise of 290,477 options. |
| 3 | Common | Common Stock | 2025-03-15 | F | D | 9,765 | $26.66 | 2,663,809 | D | — | — | (F2) The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs. |
| 4 | Common | Common Stock | 2025-03-17 | F | D | 7,223 | $27.69 | 1,185,475 | I See footnote | — | — | (F2) The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs. (F3) The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife. |
| 5 | Common | Common Stock | 2025-03-14 | M | A | 211,213 | $14.69 | 1,359,470 | I See footnote | — | — | (F3) The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife. |
| 6 | Common | Common Stock | 2025-03-14 | F | D | 162,657 | $26.66 | 1,196,813 | I See footnote | — | — | (F4) The reported shares were withheld to pay the exercise price and withholding taxes incurred in connection with the exercise of 211,213 options. (F3) The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife. |
| 7 | Common | Common Stock | 2025-03-15 | F | D | 4,115 | $26.66 | 1,192,698 | I See footnote | — | — | (F2) The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs. (F3) The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife. |
| 8 | Common | Common Stock | 2025-03-17 | F | D | 16,150 | $27.69 | 2,647,659 | D | — | — | (F2) The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs. |
| 9 | Derivative | Employee Stock Option (right to buy) | 2025-03-14 | M | D | 290,477 | $0.00 | 0 | D | $14.69 · — to 2025-03-16 | 290,477 Common Stock | (F6) Shares subject to the option are fully vested and immediately exercisable. |
| 10 | Derivative | Employee Stock Option (right to buy) | 2025-03-14 | M | D | 211,213 | $0.00 | 0 | I See footnote | $14.69 · — to 2025-03-16 | 211,213 Common Stock | (F3) The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife. (F6) Shares subject to the option are fully vested and immediately exercisable. |