Yakob Liawatidewi - 10 Apr 2023 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Role: EVP Corp Admin Center, Director
Signature: /s/ Eva Wen, by power of attorney
Issuer symbol: AMPH
Transactions as of: 10 Apr 2023
Net transactions value: -$98,850
Form type: 4
Filing time: 12 Apr 2023, 17:22:46 UTC
Previous filing: 20 Mar 2023
Next filing: 14 Apr 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	Options Exercise	$101,150	+5,000	+7.2%	$20.23	74,215	10 Apr 2023	Direct
transaction	AMPH	Common Stock	Sale	$200,000	-5,000	-6.7%	$40.00	69,215	10 Apr 2023	Direct	F1
holding	AMPH	Common Stock						2,459	10 Apr 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)	Options Exercise	$0	-5,000	-23%	$0.000000	16,991	10 Apr 2023	Common Stock	5,000	$20.23	Direct	F3

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

Explanation of Responses:

Id	Content
F1	The sale reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 5, 2022.
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	Shares subject to the option vest in four equal annual installments beginning on March 15, 2020.