Amphastar Pharmaceuticals, Inc. — Director's Dealing 2016

Aug 17, 2016

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2016-08-12

Reporting Person: ZASLOFF MICHAEL A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2016-08-12	Common Stock	M	10381	$15.23	Acquired	42792	Direct
2016-08-12	Common Stock	M	20594	$14.23	Acquired	63386	Direct
2016-08-12	Common Stock	S	30975	$18.1157	Disposed	32411	Direct
2016-08-15	Common Stock	M	17400	$14.23	Acquired	49811	Direct
2016-08-15	Common Stock	S	17400	$18.2168	Disposed	32411	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2016-08-12	Stock Option (right to buy)	$15.23	M	10381	Disposed	2016-10-03	Common Stock (10381)	Direct
2016-08-12	Stock Option (right to buy)	$14.23	M	20594	Disposed	2016-12-10	Common Stock (20594)	Direct
2016-08-15	Stock Option (right to buy)	$14.23	M	17400	Disposed	2016-12-10	Common Stock (17400)	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 $18.00 to $18.45, 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 within the ranges set forth in footnotes (1) and (2) to this Form 4.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $18.00 to $18.39, inclusive.

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