Amphastar Pharmaceuticals, Inc. — Director's Dealing 2015

Dec 4, 2015

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2015-12-01

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2015-12-01	Common Stock	S	20000	$15.489	Disposed	7611594	Indirect
2015-12-03	Common Stock	S	18583	$15.4152	Disposed	7593011	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	920117	Direct
Common Stock	670147	Indirect
Common Stock	5000	Indirect
Common Stock	200000	Indirect

Footnotes

F1: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by Applied Physics & Chemistry Laboratories, Inc., or APCL, on September 4, 2015.

F2: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.23 to $15.665, inclusive. The reporting persons 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 (2) and (4) to this Form 4.

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

F4: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.05 to $15.80, inclusive.

F5: The securities are held of record by Mary Z. Luo. The reporting persons are husband and wife.

F6: 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.

F7: 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.