Sonja Nelson - Apr 26, 2023 Form 4 Insider Report for Ambrx Biopharma Inc. (AMAM)

Role: Chief Fin. & Operating Officer
Signature: /s/ Sonja Nelson
Stock symbol: AMAM
Transactions as of: Apr 26, 2023
Transactions value $: $0
Form type: 4
Date filed: 4/28/2023, 06:00 PM
Previous filing: Jan 31, 2023
Next filing: Jul 7, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AMAM	Ordinary Shares	Award	$0	+1M		$0.00	1M	Apr 26, 2023	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	The Ordinary Shares of the Issuer may be represented by American Depositary Shares ("ADSs"). Each ADS represents seven Ordinary Shares of the Issuer.
F2	Represents grant of Restricted Stock Units (the "RSUs") payable solely in Ordinary Shares of the Issuer that vest as follows: (i) 25% of the RSUs will vest on the six-month anniversary of the grant date of April 26, 2023 (the "Grant Date"), (ii) 25% of the RSUs will vest on the 12-month anniversary of the Grant Date, (iii) 25% of the RSUs will vest on the 24-month anniversary of the Grant Date, and (iv) 25% of the RSUs will vest on the 36-month anniversary of the Grant Date.

Content

The Ordinary Shares of the Issuer may be represented by American Depositary Shares ("ADSs"). Each ADS represents seven Ordinary Shares of the Issuer.

Represents grant of Restricted Stock Units (the "RSUs") payable solely in Ordinary Shares of the Issuer that vest as follows: (i) 25% of the RSUs will vest on the six-month anniversary of the grant date of April 26, 2023 (the "Grant Date"), (ii) 25% of the RSUs will vest on the 12-month anniversary of the Grant Date, (iii) 25% of the RSUs will vest on the 24-month anniversary of the Grant Date, and (iv) 25% of the RSUs will vest on the 36-month anniversary of the Grant Date.