Company Page
Most Recent Insiders Activity
| Transaction Date | Company Name | Insider Name (Title) | Activity | Stock | Acquired or Disposed | Shares | Price range | Amount |
|---|---|---|---|---|---|---|---|---|
| 2024-05-01 | Amphastar Pharmaceuticals, Inc. | Petersen Floyd F.
(Director) |
S | Common Stock | D | 500 | $41.67 - $41.67 | $20,836 |
| 2024-04-01 | Amphastar Pharmaceuticals, Inc. | Petersen Floyd F.
(Director) |
S | Common Stock | D | 500 | $43.43 - $43.43 | $21,714 |
| 2024-03-15 | Amphastar Pharmaceuticals, Inc. | Luo Mary Z.
(COO,Chief Scientist & Chairman) |
M | Common Stock | A | 1032976 | $12.46 - $12.46 | $12,870,880 |
| 2024-03-15 | Amphastar Pharmaceuticals, Inc. | Luo Mary Z.
(COO,Chief Scientist & Chairman) |
F | Common Stock | D | 634199 | $43.05 - $43.05 | $27,302,265 |
| 2024-03-15 | Amphastar Pharmaceuticals, Inc. | Liawatidewi Yakob
(EVP CORP ADMIN CENTER) |
F | Common Stock | D | 4424 | $43.05 - $43.05 | $190,452 |
| 2024-03-06 | Amphastar Pharmaceuticals, Inc. | Zhou Rong
(SENIOR EVP, PRODUCTION CENTER) |
F | Common Srock | D | 1390 | $46.31 - $46.31 | $64,370 |
| 2024-03-04 | Amphastar Pharmaceuticals, Inc. | Luo Mary Z.
(COO, Chief Scientist, Chairman) |
A | Common Stock | A | 91420 | $0.00 - $0.00 | $0 |
| 2024-03-05 | Amphastar Pharmaceuticals, Inc. | ZASLOFF MICHAEL A
(Director) |
S | Common Stock | D | 12500 | $47.06 - $47.53 | $589,723 |
| 2024-03-04 | Amphastar Pharmaceuticals, Inc. | Liawatidewi Yakob
(EVP CORP ADMIN CENTER) |
A | Common Stock | A | 10754 | $0.00 - $0.00 | $0 |
| 2024-03-04 | Amphastar Pharmaceuticals, Inc. | Zhou Rong
(SENIOR EVP, PRODUCTION CENTER) |
A | Common Srock | A | 12521 | $0.00 - $0.00 | $0 |
| 2024-03-04 | Amphastar Pharmaceuticals, Inc. | PETERS WILLIAM J
(CFO, EVP & TREASURER) |
A | Common Stock | A | 19440 | $0.00 - $0.00 | $0 |
| 2024-03-01 | Amphastar Pharmaceuticals, Inc. | Petersen Floyd F.
(Director) |
S | Common Stock | D | 500 | $45.60 - $46.53 | $22,846 |
| 2024-02-01 | Amphastar Pharmaceuticals, Inc. | Petersen Floyd F.
(Director) |
S | Common Stock | D | 500 | $53.07 - $53.64 | $26,547 |
| 2024-01-10 | Amphastar Pharmaceuticals, Inc. | Zhang Jack Y.
(CEO & Chief Scientific Officer) |
S | Common Stock | D | 131386 | $54.32 - $57.00 | $7,171,766 |
| 2024-01-08 | Amphastar Pharmaceuticals, Inc. | Zhang Jack Y.
(CEO & Chief Scientific Officer) |
S | Common Stock | D | 219800 | $56.70 - $63.27 | $12,798,703 |
| 2024-01-02 | Amphastar Pharmaceuticals, Inc. | Petersen Floyd F.
(Director) |
S | Common Stock | D | 500 | $60.56 - $61.70 | $30,682 |
| 2023-12-01 | Amphastar Pharmaceuticals, Inc. | Zhou Rong
(Senior EVP, Production Center) |
S | Common Stock | D | 7830 | $58.58 - $59.58 | $462,195 |
| 2023-12-01 | Amphastar Pharmaceuticals, Inc. | Zhou Rong
(Senior EVP, Production Center) |
M | Common Stock | A | 7830 | $14.40 - $16.19 | $119,041 |
| 2023-11-17 | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K
(Director) |
S | Common Stock | D | 4000 | $55.86 - $55.86 | $223,445 |
| 2023-11-17 | Amphastar Pharmaceuticals, Inc. | PRINS RICHARD K
(Director) |
G | Common Stock | D | 1000 | $0.00 - $0.00 | $0 |
Activity types
| A | Grant, award or other acquisition |
| C | Conversion of Derivative or Security |
| D | Disposition to the issuer of issuer equity securities |
| E | Expiration of short derivative position |
| F | Payment of exercise price or tax liability |
| G | Bona fide Gift |
| H | Expiration (or cancellation) of long derivative position with value received |
| I | Discretionary Transaction |
| J | Other acquisition or disposition |
| K | Transaction in equity swap or instrument with similar characteristics |
| L | Small Acquisition |
| M | Exercise or conversion of derivative security |
| O | Exercise of out-of-the-money derivative security |
| P | Open Market Purchase |
| S | Open Market Sale |
| U | Disposition pursuant to a tender of shares in a change of control transaction |
| V | Transaction Voluntarily Reported |
| X | Exercise of in-the-money or at-the-money derivative security |
| Z | Deposit into or withdrawal from voting trust |