Amphastar Pharmaceuticals, Inc. — Director's Dealing 2017

Oct 6, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2017-10-04

Reporting Person: Petersen Floyd F. (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-10-04	Common Stock	M	39312	$10.77	Acquired	103873	Direct
2017-10-04	Common Stock	S	39312	$18.5886	Disposed	64561	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-10-04	Stock Option (right to buy)	$10.77	M	39312	Disposed	2017-12-15	Common Stock (39312)	Direct

Footnotes

F1: The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 23, 2017.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.455 to $18.80, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price.

F3: Shares subject to the option are fully vested and immediately exercisable.