Amphastar Pharmaceuticals, Inc. — Director's Dealing 2021

Mar 19, 2021

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Amphastar Pharmaceuticals, Inc. (AMPH)
CIK: 0001297184
Period of Report: 2021-03-16

Reporting Person: PETERS WILLIAM J (CFO, SVP & Treasurer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-03-16	Common Stock	F	6398	$18.44	Disposed	74728	Direct
2021-03-17	Common Stock	A	33574	$0.00	Acquired	108302	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2021-03-17	Employee Stock Option (right to buy)	$17.99	A	78833	Acquired	2031-03-17	Common Stock (78833)	Direct

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 reported shares are represented by RSUs which vest in four equal annual installments beginning on March 17, 2022.

F3: Shares subject to the option vest in four equal annual installments beginning on March 17, 2022.