AMPH Amphastar Pharmaceuticals, Inc.
Nasdaq · SEC CIK 1297184 · EDGAR
- Bought, last 12 months
- $0 0 purchases by 0 insiders
- Sold, last 12 months
- $1.71M 11 sales by 4 insiders
- Filings on record
- 234 since 2021-07-08, latest 2026-09-23 18:02
BoughtSold
Most active insiders, 12 months
| Insider | Title | Bought | Sold |
|---|---|---|---|
| Petersen Floyd F. | Dir | — | $575.6K |
| Zhou Rong | SENIOR EVP, PRODUCTION CENTER | — | $571.1K |
| PETERS WILLIAM J | CFO, EVP, Treas, Dir | — | $287.4K |
| PRINS RICHARD K | Dir | — | $275.1K |
| Pierce Anthony T | Dir | — | — |
| Gaugh David Russell | Dir | — | — |
| Deflin Gayle | Dir | — | — |
| Liawatidewi Yakob | EVP CORP ADMIN CENTER, Dir | — | — |
| Gerst Diane G. | Dir | — | — |
| Zhang Jack Y. | CEO, CSO, Dir, 10% | — | — |
Transactions 354
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2022-03-17 | 2022-03-15 | AMPH | Zhou Rong | EVP, Production Center | A - Grant | $0.00 | +13.7K | 84.0K | +19% | $0 |
| D | 2022-03-17 | 2022-03-15 | AMPH | PRINS RICHARD K | Dir | M - OptEx | $17.11 | +10.0K | 55.2K | +22% | +$171.1K |
| D | 2022-03-17 | 2022-03-15 | AMPH | PRINS RICHARD K | Dir | S - Sale+OE | $34.02 | -10.0K | 45.2K | -18% | -$340.2K |
| DI | 2022-03-17 | 2022-03-15 | AMPH | Luo Mary Z. | CEO, CSO, Dir, 10% | A - Grant | $0.00 | +32.4K | 1.52M | +2% | $0 |
| DI | 2022-03-17 | 2022-03-15 | AMPH | Luo Mary Z. | CEO, CSO, Dir, 10% | F - Tax | $34.74 | -4,786 | 1.52M | -0.3% | -$166.3K |
| D | 2022-03-17 | 2022-03-15 | AMPH | Luo Mary Z. | CEO, CSO, Dir, 10% | F - Tax | $34.74 | -14.8K | 2.38M | -0.6% | -$512.7K |
| D | 2022-03-17 | 2022-03-15 | AMPH | Luo Mary Z. | CEO, CSO, Dir, 10% | A - Grant | $0.00 | +76.9K | 2.40M | +3% | $0 |
| D | 2022-03-17 | 2022-03-15 | AMPH | Liawatidewi Yakob | EVP Corp Admin Center | A - Grant | $0.00 | +11.5K | 65.6K | +21% | $0 |
| D | 2022-03-17 | 2022-03-15 | AMPH | Liawatidewi Yakob | EVP Corp Admin Center | F - Tax | $34.74 | -1,559 | 64.0K | -2% | -$54.2K |
| D | 2022-03-09 | 2022-03-07 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $13.35 | +13.0K | 119.1K | +12% | +$173.9K |
| D | 2022-03-09 | 2022-03-07 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $29.35 | -13.0K | 106.0K | -11% | -$382.3K |
| DM | 2022-03-01 | 2022-02-25 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $28.47 | -23.0K | 118.0K | -16% | -$654.9K |
| D | 2022-03-01 | 2022-02-25 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $14.95 | +23.0K | 129.0K | +22% | +$343.9K |
| D | 2022-03-01 | 2022-02-25 | AMPH | Zhou Rong | EVP, Production Center | M - OptEx | $10.93 | +7,000 | 83.6K | +9% | +$76.5K |
| D | 2022-03-01 | 2022-02-25 | AMPH | Zhou Rong | EVP, Production Center | S - Sale+OE | $28.77 | -13.2K | 70.3K | -16% | -$381.1K |
| 2022-03-01 | 2022-03-01 | AMPH | Petersen Floyd F. | Dir | S - Sale | $27.27 | -500 | 76.9K | -0.6% | -$13.6K | |
| D | 2022-02-09 | 2022-02-08 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $14.95 | +10.0K | 116.0K | +9% | +$149.5K |
| D | 2022-02-09 | 2022-02-08 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $26.95 | -10.0K | 106.0K | -9% | -$269.5K |
| D | 2022-02-09 | 2022-02-08 | AMPH | Zhou Rong | EVP, Production Center | M - OptEx | $10.93 | +7,000 | 83.6K | +9% | +$76.5K |
| D | 2022-02-09 | 2022-02-08 | AMPH | Zhou Rong | EVP, Production Center | S - Sale+OE | $26.77 | -7,000 | 76.6K | -8% | -$187.4K |
| M | 2022-02-02 | 2022-02-01 | AMPH | Petersen Floyd F. | Dir | S - Sale | $24.09 | -500 | 77.8K | -0.6% | -$12.0K |
| D | 2022-01-11 | 2022-01-10 | AMPH | Zhou Rong | EVP, Production Center | M - OptEx | $10.93 | +14.0K | 97.5K | +17% | +$153.0K |
| DM | 2022-01-11 | 2022-01-10 | AMPH | Zhou Rong | EVP, Production Center | S - Sale+OE | $25.36 | -20.9K | 76.6K | -21% | -$530.7K |
| DM | 2022-01-11 | 2022-01-07+ | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $24.75 | -47.8K | 106.0K | -31% | -$1.18M |
| DM | 2022-01-11 | 2022-01-07+ | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $14.40 | +47.8K | 137.8K | +53% | +$688.0K |
| D | 2022-01-04 | 2021-12-30 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $14.40 | +10.0K | 116.0K | +9% | +$144.0K |
| D | 2022-01-04 | 2021-12-30 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $23.40 | -10.0K | 106.0K | -9% | -$234.0K |
| 2022-01-04 | 2022-01-03 | AMPH | Petersen Floyd F. | Dir | S - Sale | $23.22 | -500 | 77.9K | -0.6% | -$11.6K | |
| 2021-12-23 | 2021-12-22 | AMPH | Petersen Floyd F. | Dir | S - Sale | $22.50 | -1,000 | 78.4K | -1% | -$22.5K | |
| D | 2021-12-22 | 2021-12-21 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $22.40 | -8,256 | 106.0K | -7% | -$184.9K |
| D | 2021-12-22 | 2021-12-21 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $14.40 | +8,256 | 114.3K | +8% | +$118.9K |
| D | 2021-12-17 | 2021-12-16 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $14.40 | +1,744 | 107.8K | +2% | +$25.1K |
| D | 2021-12-17 | 2021-12-16 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $22.40 | -1,744 | 106.0K | -2% | -$39.1K |
| D | 2021-12-13 | 2021-12-10 | AMPH | PRINS RICHARD K | Dir | M - OptEx | $17.11 | +5,291 | 50.5K | +12% | +$90.5K |
| D | 2021-12-13 | 2021-12-10 | AMPH | PRINS RICHARD K | Dir | S - Sale+OE | $21.36 | -5,291 | 45.2K | -10% | -$113.0K |
| D | 2021-11-23 | 2021-11-22 | AMPH | PRINS RICHARD K | Dir | S - Sale+OE | $21.22 | -5,000 | 45.2K | -10% | -$106.1K |
| D | 2021-11-23 | 2021-11-22 | AMPH | PRINS RICHARD K | Dir | M - OptEx | $17.11 | +5,000 | 50.2K | +11% | +$85.5K |
| D | 2021-11-12 | 2021-11-11 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $21.33 | -10.0K | 105.7K | -9% | -$213.3K |
| D | 2021-11-12 | 2021-11-11 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $11.33 | +10.0K | 115.7K | +9% | +$113.3K |
| D | 2021-11-12 | 2021-11-11 | AMPH | Zhou Rong | EVP, Production Center | M - OptEx | $10.48 | +7,813 | 90.9K | +9% | +$81.9K |
| D | 2021-11-12 | 2021-11-11 | AMPH | Zhou Rong | EVP, Production Center | S - Sale+OE | $21.67 | -7,813 | 83.1K | -9% | -$169.3K |
| 2021-08-17 | 2021-08-16 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale | $19.35 | -6,589 | 105.7K | -6% | -$127.5K | |
| D | 2021-08-04 | 2021-08-02 | AMPH | Zhou Rong | EVP, Production Center | M - OptEx | $10.48 | +6,000 | 92.2K | +7% | +$62.9K |
| D | 2021-08-04 | 2021-08-02 | AMPH | Zhou Rong | EVP, Production Center | S - Sale+OE | $21.24 | -9,123 | 83.1K | -10% | -$193.8K |
| D | 2021-08-03 | 2021-08-02 | AMPH | Liawatidewi Yakob | EVP Corp Admin Center | S - Sale+OE | $21.14 | -8,932 | 54.1K | -14% | -$188.8K |
| D | 2021-08-03 | 2021-08-02 | AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M - OptEx | $14.95 | +8,932 | 63.0K | +17% | +$133.5K |
| D | 2021-07-27 | 2021-07-26 | AMPH | Zhou Rong | EVP, Production Center | S - Sale+OE | $20.87 | -6,000 | 86.2K | -7% | -$125.2K |
| D | 2021-07-27 | 2021-07-26 | AMPH | Zhou Rong | EVP, Production Center | M - OptEx | $10.48 | +6,000 | 92.2K | +7% | +$62.9K |
| D | 2021-07-22 | 2021-07-20 | AMPH | Zhou Rong | EVP, Production Center | M - OptEx | $10.48 | +5,187 | 91.4K | +6% | +$54.4K |
| D | 2021-07-22 | 2021-07-20 | AMPH | Zhou Rong | EVP, Production Center | S - Sale+OE | $20.57 | -5,187 | 86.2K | -6% | -$106.7K |
| D | 2021-07-16 | 2021-07-15 | AMPH | Liawatidewi Yakob | EVP Corp Admin Center | S - Sale+OE | $20.01 | -31.5K | 54.1K | -37% | -$630.8K |
| DM | 2021-07-16 | 2021-07-15 | AMPH | Liawatidewi Yakob | EVP Corp Admin Center | M - OptEx | $13.27 | +31.0K | 77.9K | +66% | +$411.7K |
| D | 2021-07-08 | 2021-07-07 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | M - OptEx | $11.33 | +10.0K | 122.3K | +9% | +$113.3K |
| D | 2021-07-08 | 2021-07-07 | AMPH | PETERS WILLIAM J | CFO, EVP, Treas | S - Sale+OE | $20.37 | -10.0K | 112.3K | -8% | -$203.7K |
Purchase Sale Sale after option exercise All abbreviations