Amphastar Pharmaceuticals, Inc. — Director's Dealing 2017

Mar 29, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2017-03-26

Reporting Person: Zhang Jack Y. (Director, CEO & Chief Scientific Officer, 10% Owner)
Reporting Person: Luo Mary Z. (Director, COO, Chief Scientist Chairman, 10% Owner)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-03-26	Common Stock	F	21799	$13.76	Disposed	1199982	Direct
2017-03-27	Common Stock	F	27480	$14.27	Disposed	1172502	Direct
2017-03-26	Common Stock	F	6704	$13.76	Disposed	803081	Indirect
2017-03-27	Common Stock	F	9271	$14.27	Disposed	793810	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	7461594	Indirect
Common Stock	5000	Indirect
Common Stock	200000	Indirect

Footnotes

F1: The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of restricted stock units, or RSUs.

F2: The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife.

F3: The shares are held of record by APCL, of which the reporting persons are the sole owners.

F4: The shares are held of record in an account for the benefit of the reporting persons' son. The reporting persons disclaim beneficial ownership of these shares, and the inclusion of these shares in this report should not be deemed an admission of beneficial ownership of any such shares for purposes of Section 16, or for any other purpose.

F5: The shares are held of record by a trust for the benefit of the reporting persons' son. The reporting persons disclaim beneficial ownership of these shares, and the inclusion of these shares in this report should not be deemed an admission of beneficial ownership of any such shares for purposes of Section 16, or for any other purpose.