William J. Newell - Mar 5, 2024 Form 4/A Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role: CEO, Director
Signature: /s/ Edward C. Albini as attorney-in-fact for William J. Newell
Stock symbol: STRO
Transactions as of: Mar 5, 2024
Transactions value $: $0
Form type: 4/A
Date filed: 3/22/2024, 04:28 PM
Date Of Original Report: Mar 7, 2024
Previous filing: Mar 6, 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	Restricted Stock Units (RSUs)	Award	$0	+167K		$0.00	167K	Mar 5, 2024	Common Stock	167K		Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Each RSU represents a contingent right to receive one (1) share of the Issuer's Common Stock upon settlement.
F2	The RSUs vest as to 1/4th of the total award annually beginning on March 1, 2025, subject to continued service through each vesting date.

Remarks:

This Form 4 amendment is being filed to correct the number of restricted stock units granted to the reporting person on March 5, 2024. The original Form 4 remains otherwise unmodified.