Amphastar Pharmaceuticals, Inc. — Director's Dealing 2014

Jun 25, 2014

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2014-06-24

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

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	649108	Direct
Common Stock	157987	Direct
Common Stock	7631594	Indirect
Common Stock	5000	Indirect
Common Stock	200000	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Stock Option (Right to Buy)	$22.29	2014-08-02	Common Stock (275000)		Direct
Stock Option (Right to Buy)	$12.97	2015-09-28	Common Stock (275000)		Direct
Stock Option (Right to Buy)	$16.75	2016-10-03	Common Stock (262431)		Direct
Stock Option (Right to Buy)	$11.51	2017-07-13	Common Stock (382448)		Direct
Stock Option (Right to Buy)	$11.53	2017-09-28	Common Stock (176987)		Direct
Stock Option (Right to Buy)	$12.02	2018-07-05	Common Stock (1279167)		Direct
Stock Option (Right to Buy)	$15.84	2019-03-27	Common Stock (514783)		Direct

Footnotes

F1: This represents deferred stock units that were granted on 3/27/2014 and vest over 4 years in equal annual installments commencing on the first anniversary of the grant date, subject to the reporting person's continued employment with or service to the Issuer or subsidiary thereof through the applicable vesting date.

F2: The reporting person and Dr. Mary Z. Luo ("Dr. Luo"), the Chief Operating Officer and the Chairman of the Board of Directors of the Issuer, are the sole owners of Applied Physics & Chemistry Laboratories, Inc. The reporting person and Dr. Luo have shared voting and investment power over these shares.

F3: Shares held in an account for the benefit of the reporting person's son, Bill Luobei Zhang, who shares the reporting person's household. As such, the reporting person may be deemed to have indirect beneficial ownership of these shares. The reporting person disclaims 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.

F4: Shares held by a trust for the benefit of the reporting person's son, Bill Luobei Zhang, who shares the reporting person's household. As such, the reporting person may be deemed to have indirect beneficial ownership of these shares. The reporting person disclaims 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: This option is fully vested and exercisable.

F6: This option was granted on 10/3/2011 and vests over 3 years in equal annual installments commencing on the first anniversary of the grant date, subject to the reporting person's continued (i) employment with or service to the Issuer or subsidiary thereof and (ii) service on the Board of Directors of the Issuer, in each case through the applicable vesting date.

F7: This option was granted on 7/13/2012 and vests over 4 years in equal annual installments commencing on the first anniversary of the grant date, subject to the reporting person's continued (i) employment with or service to the Issuer or subsidiary thereof and (ii) service on the Board of Directors of the Issuer, in each case through the applicable vesting date.

F8: This option was granted on 9/28/2012 and vests over 4 years in equal annual installments commencing on the first anniversary of the grant date, subject to the reporting person's continued (i) employment with or service to the Issuer or subsidiary thereof and (ii) service on the Board of Directors of the Issuer, in each case through the applicable vesting date.

F9: This option was granted on 7/5/2013 and vests over 3 years in equal annual installments commencing on the first anniversary of the grant date, subject to the reporting person's continued (i) employment with or service to the Issuer or subsidiary thereof and (ii) service on the Board of Directors of the Issuer, in each case through the applicable vesting date.

F10: This option was granted on 3/27/2014 and vests over 3 years in equal annual installments commencing on the first anniversary of the grant date, subject to the reporting person's continued (i) employment with or service to the Issuer or subsidiary thereof and (ii) service on the Board of Directors of the Issuer, in each case through the applicable vesting date.