Amphastar Pharmaceuticals, Inc. — Director's Dealing 2021

May 24, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2021-05-20

Reporting Person: Lee Howard (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-05-20	Common Stock	M	10000	$16.43	Acquired	142914	Direct
2021-05-20	Common Stock	S	10000	$19.7354	Disposed	132914	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-05-20	Stock Option (right to buy)	$16.43	M	10000	Disposed	2021-06-09	Common Stock (10000)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $19.66 to $19.945 shares sold at each separate price.

F2: Shares subject to the option are fully vested and immediately exercisable.