Amphastar Pharmaceuticals, Inc. - Director's Dealing 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2016-08-19

Reporting Person: Gerst Diane G. (EVP, QA & Regulatory Affairs)

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-08-19	Common Stock	M	10046	$14.23	Acquired	39031	Direct
2016-08-19	Common Stock	M	14000	$10.93	Acquired	53031	Direct
2016-08-19	Common Stock	S	24046	$19.28	Disposed	28985	Direct

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-08-19	Employee Stock Option (right to buy)	$14.23	M	10046	Disposed	2021-12-22	Common Stock (10046)	Direct
2016-08-19	Employee Stock Option (right to buy)	$10.93	M	14000	Disposed	2023-07-30	Common Stock (14000)	Direct

F1: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 17, 2016.

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