Amphastar Pharmaceuticals, Inc. — Director's Dealing 2017

Jun 13, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2017-06-08

Reporting Person: PRINS RICHARD K (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-06-08	Common Stock	A	5844	—	Acquired	28844	Direct
2017-06-09	Common Stock	M	10000	$10.77	Acquired	38844	Direct
2017-06-09	Common Stock	S	10000	$17.0707	Disposed	28844	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-06-08	Stock Option (right to buy)	$17.11	A	20291	Acquired	2022-06-08	Common Stock (20291)	Direct
2017-06-09	Stock Option (right to buy)	$10.77	M	10000	Disposed	2017-12-15	Common Stock (10000)	Direct

Footnotes

F1: The reported securities are represented by restricted stock units, or RSUs, all of which vest on June 8, 2018.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $17.00 to $17.21, 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: All of the shares subject to the option vest on June 8, 2018.

F4: Shares subject to the option are fully vested and immediately exercisable.