William J. Newell - Jan 29, 2024 Form 4 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
Jan 29, 2024
Transactions value $
-$28,114
Form type
4
Date filed
1/31/2024, 04:29 PM
Previous filing
Mar 7, 2023
Next filing
Mar 5, 2024

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction STRO Common Stock Options Exercise $0 +13.8K +8.34% $0.00 179K Jan 29, 2024 Direct
transaction STRO Common Stock Tax liability -$28.1K -5.63K -3.16% $4.99 173K Jan 29, 2024 Direct F1
holding STRO Common Stock 117K Jan 29, 2024 By William J. Newell Family Trust DTD 03/15/2019 F2

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 -13.8K -100% $0.00* 0 Jan 29, 2024 Common Stock 13.8K Direct F3, F4
* 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 the RSUs and does not represent a sale by the reporting person.
F2 The securities are held of record by the reporting person as trustee of the William J. Newell Family Trust DTD 03/15/2019.
F3 Each RSU represents a contingent right to receive one (1) share of the issuer's Common Stock upon settlement.
F4 The RSUs vest as to 1/4th of the total shares annually beginning on January 29, 2021, subject to continued service through each vesting date.