Amphastar Pharmaceuticals, Inc. — Director's Dealing 2018

Mar 16, 2018

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2018-03-15

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
2018-03-15	Common Stock	A	98029	—	Acquired	2111194	Direct
2018-03-15	Common Stock	A	41687	—	Acquired	1372333	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2018-03-15	Employee Stock Option (right to buy)	$21.77	A	273692	Acquired	2026-03-15	Common Stock (273692)	Direct
2018-03-15	Employee Stock Option (right to buy)	$21.77	A	116392	Acquired	2028-03-15	Common Stock (116392)	Indirect

Holdings (Non-Derivative)

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

Footnotes

F1: The reported shares are represented by restricted stock units, or RSUs, which vest in three equal annual installments beginning on March 15, 2019.

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 and The Bill Luobei Zhang 2004 Irrevocable Trust (the "BLZ Trust") 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 the BLZ Trust. In prior Section 16 reports, these shares were reported as 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.

F6: Shares subject to the option vest in three equal annual installments beginning on March 15, 2019.