Yakob Liawatidewi - 06 Mar 2023 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Role: EVP Corp Admin Center
Signature: /s/ Eva Wen, by power of attorney
Issuer symbol: AMPH
Transactions as of: 06 Mar 2023
Net transactions value: $0
Form type: 4
Filing time: 08 Mar 2023, 15:07:11 UTC
Previous filing: 10 Aug 2022
Next filing: 17 Mar 2023
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMPH	Common Stock	Award	$0	+12,752	+21%	$0.000000	74,359	06 Mar 2023	Direct	F1
holding	AMPH	Common Stock						2,459	06 Mar 2023	See footnote	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AMPH	Employee Stock Option (right to buy)	Award	$0	+26,873		$0.000000	26,873	06 Mar 2023	Common Stock	26,873	$35.13	Direct	F3

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The reported shares are represented by restricted stock units, or RSUs, which vest in four equal annual installments beginning on March 6, 2024.
F2	The reported shares are held of record by the Yakob and Sunmoon Trust dated July 25, 2013 for which the reporting person serves as a trustee.
F3	The shares subject to the option vest in four equal annual installments beginning on March 6, 2024.