William J. Peters - 19 May 2021 Form 4 Insider Report for Amphastar Pharmaceuticals, Inc. (AMPH)

Role: CFO, EVP & Treasurer
Signature: /s/ William J. Peters
Issuer symbol: AMPH
Transactions as of: 19 May 2021
Net transactions value: $0
Form type: 4
Filing time: 20 May 2021, 18:32:34 UTC
Next filing: 08 Jul 2021
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	+3,047	+2.8%	$0.000000	111,349	19 May 2021	Direct	F1

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	+7,209		$0.000000	7,209	19 May 2021	Common Stock	7,209	$19.82	Direct	F2

* 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 which vest in four equal annual installments beginning on May 19, 2022.
F2	Shares subject to the option vest in four equal annual installments beginning on May 19, 2022.