Luo Mary Z. 4

Accession 0001415889-25-008523

CIK 0001297184other

Filed

Mar 17, 8:00 PM ET

Accepted

Mar 18, 7:13 PM ET

Size

22.9 KB

Accession

0001415889-25-008523

Form 4

Period: 2025-03-14

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 total
Exercise: $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

DirectorCOO, Chief Scientist, Chairman10% Owner

Transactions

Exercise/Conversion
Common Stock
2025-03-14$14.69/sh+290,477$4,267,107→ 2,899,859 total
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)
Tax Payment
Common Stock
2025-03-14$26.66/sh−226,285$6,032,758→ 2,673,574 total
Tax Payment
Common Stock
2025-03-17$27.69/sh−16,150$447,194→ 2,647,659 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−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 total
Exercise: $14.69Exp: 2025-03-16→ Common Stock (290,477 underlying)

Holdings

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.

Documents

1 file

Amphastar Pharmaceuticals, Inc.

CIK 0001297184

Entity typeother