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4//SEC Filing

Luo Mary Z. 4

Accession 0001415889-25-017423

CIK 0001297184other

View on SEC.gov Company Profile

Filed

Jun 15, 8:00 PM ET

Accepted

Jun 16, 5:19 PM ET

Size

10.1 KB

Accession

0001415889-25-017423

Insider Transaction Report

Form 4

Period: 2025-06-13

Amphastar Pharmaceuticals, Inc.AMPH

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 total
Exercise: $13.03Exp: 2028-03-16→ Common Stock (200,000 underlying)

Holdings

Common Stock
(indirect: See footnote)
6,827,679
Common Stock
(indirect: See footnote)
1,185,475

DirectorCOO, Chief Scientist, Chairman10% 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 total
Exercise: $13.03Exp: 2028-03-16→ Common Stock (200,000 underlying)

Holdings

Common Stock
(indirect: See footnote)
1,185,475
Common Stock
(indirect: See footnote)
6,827,679

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.

Documents

1 file

4
form4-06162025_090631.xmlPrimary

Issuer

Amphastar Pharmaceuticals, Inc.

CIK 0001297184

Entity typeother

Related Parties

1

filerCIK 0001611156

Filing Metadata

Form type: 4
Filed: Jun 15, 8:00 PM ET
Accepted: Jun 16, 5:19 PM ET
Size: 10.1 KB

View on SEC.gov