Venkatesh Srinivasan - May 1, 2023 Form 4 Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role: Chief Tech Op Officer
Signature: /s/ Edward C. Albini as attorney-in-fact for Venkatesh Srinivasan
Stock symbol: STRO
Transactions as of: May 1, 2023
Transactions value $: $0
Form type: 4
Date filed: 5/2/2023, 06:51 PM
Next filing: Mar 5, 2024

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	STRO	Stock Option (right to buy Common Stock)	Award	$0	+7.5K		$0.00	7.5K	May 1, 2023	Common Stock	7.5K	$4.58	Direct	F1
transaction	STRO	Restricted Stock Unit (RSU)	Award	$0	+10K		$0.00	10K	May 1, 2023	Common	10K		Direct	F2, F3

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

Explanation of Responses:

Id	Content
F1	The option vests as to 2.0833% of the total shares monthly, beginning on June 1, 2023, with 100% of the total shares vested and exercisable on May 1, 2027, subject to the reporting person's provision of service to the issuer on each vesting date.
F2	Each RSU represents a contingent right to receive one (1) share of the issuer's Common Stock upon settlement.
F3	The RSUs vest as to 1/4th of the total shares annually beginning on May 1, 2024, subject to continued service through each vesting date.