Luo Mary Z. 4
4 · Amphastar Pharmaceuticals, Inc. · Filed Jun 16, 2025
Insider Transaction Report
Form 4
Zhang Jack Y.
DirectorCEO & CHIEF SCIENTIFIC OFFICER10% Owner
Transactions
- Exercise/Conversion
Common Stock
2025-06-13$13.03/sh+200,000$2,606,000→ 2,847,659 total - Exercise/Conversion
Employee Stock Option (right to buy)
2025-06-13−200,000→ 205,003 totalExercise: $13.03Exp: 2028-03-16→ Common Stock (200,000 underlying)
Holdings
- 6,827,679(indirect: See footnote)
Common Stock
- 1,185,475(indirect: See footnote)
Common Stock
Footnotes (3)
- [F1]The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife.
- [F2]The shares are held of record by Applied Physics and Chemistry Laboratories, Inc., of which the reporting persons and The Bill Luobei Zhang 2004 Irrevocable Trust are the sole owners.
- [F3]Shares subject to the option are fully vested and immediately exercisable.