Amphastar Pharmaceuticals, Inc. — Director's Dealing 2021

Mar 18, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2021-03-15

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-03-15	Common Stock	F	28088	$19.15	Disposed	2218900	Direct
2021-03-15	Common Stock	F	9592	$19.15	Disposed	1440369	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	6827679	Indirect
Common Stock	5000	Indirect

Footnotes

F1: The reported shares were withheld to satisfy the reporting person's tax liability in connection with the vesting of 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 Applied Physics & Chemistry Laboratories, Inc., of which the reporting persons and The Bill Luobei Zhang 2004 Irrevocable 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