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: Zhou Rong (EVP, Production Center)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2021-03-16	Common Stock	F	3303	$18.44	Disposed	74281	Direct
2021-03-17	Common Stock	A	21984	$0.00	Acquired	96265	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	51621	Acquired	2031-03-17	Common Stock (51621)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	99668	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 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: The shares are held of record by the Zhou Family Trust for which the reporting person serves as a trustee.

F4: The shares are held of record by the reporting person's spouse.

F5: Shares subject to the option vest in four equal annual installments beginning on March 17, 2022.