Jane Chung - 01 Mar 2024 Form 4 Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role: PRESIDENT AND COO
Signature: /s/ Edward C. Albini as attorney-in-fact for Jane Chung
Issuer symbol: STRO
Transactions as of: 01 Mar 2024
Net transactions value: -$10,088
Form type: 4
Filing time: 05 Mar 2024, 16:32:42 UTC
Previous filing: 04 Dec 2023
Next filing: 06 Mar 2024
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STRO	Common Stock	Options Exercise	$0	+6,875	+22%	$0.000000	38,573	01 Mar 2024	Direct
transaction	STRO	Common Stock	Tax liability	$10,088	-2,038	-5.3%	$4.95	36,535	01 Mar 2024	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	STRO	Restricted Stock Unit (RSU)	Options Exercise	$0	-6,875	-25%	$0.000000	20,625	01 Mar 2024	Common Stock	6,875		Direct	F2, F3

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

Explanation of Responses:

Id	Content
F1	Represents the number of shares of Common Stock that have been withheld by the issuer to satisfy its income tax withholding and remittance obligations in connection with the net settlement of restricted stock units; does not represent a sale by the reporting person.
F2	Each RSU represents a contingent right to receive one (1) share of the issuer's Common Stock upon settlement.
F3	The RSU award vests as to 1/4th of the total award annually beginning on March 1, 2024, subject to continued service through each vesting date.