Luo Mary Z. 4
4 · Amphastar Pharmaceuticals, Inc. · Filed Mar 18, 2025
Insider Transaction Report
Form 4
Zhang Jack Y.
DirectorCEO & CHIEF SCIENTIFIC OFFICER10% Owner
Transactions
- Tax Payment
Common Stock
2025-03-14$26.66/sh−226,285$6,032,758→ 2,673,574 total - Tax Payment
Common Stock
2025-03-14$26.66/sh−162,657$4,336,436→ 1,196,813 total(indirect: See footnote) - Tax Payment
Common Stock
2025-03-17$27.69/sh−16,150$447,194→ 2,647,659 total - Tax Payment
Common Stock
2025-03-17$27.69/sh−7,223$200,005→ 1,185,475 total(indirect: See footnote) - Exercise/Conversion
Employee Stock Option (right to buy)
2025-03-14−290,477→ 0 totalExercise: $14.69Exp: 2025-03-16→ Common Stock (290,477 underlying) - Tax Payment
Common Stock
2025-03-15$26.66/sh−9,765$260,335→ 2,663,809 total - Exercise/Conversion
Common Stock
2025-03-14$14.69/sh+211,213$3,102,719→ 1,359,470 total(indirect: See footnote) - Tax Payment
Common Stock
2025-03-15$26.66/sh−4,115$109,706→ 1,192,698 total(indirect: See footnote) - Exercise/Conversion
Employee Stock Option (right to buy)
2025-03-14−211,213→ 0 total(indirect: See footnote)Exercise: $14.69Exp: 2025-03-16→ Common Stock (211,213 underlying) - Exercise/Conversion
Common Stock
2025-03-14$14.69/sh+290,477$4,267,107→ 2,899,859 total
Holdings
- 6,827,679(indirect: See footnote)
Common Stock
Footnotes (6)
- [F1]The reported shares were withheld to pay the exercise price and withholding taxes incurred in connection with the exercise of 290,477 options.
- [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.
- [F4]The reported shares were withheld to pay the exercise price and withholding taxes incurred in connection with the exercise of 211,213 options.
- [F5]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.
- [F6]Shares subject to the option are fully vested and immediately exercisable.