Trevor Hallam - Apr 14, 2023 Form 4 Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role
Pres. Rsrch & Cf. Sctific Ofcr
Signature
/s/ Edward C. Albini as attorney-in-fact for Trevor Hallam
Stock symbol
STRO
Transactions as of
Apr 14, 2023
Transactions value $
-$5,702
Form type
4
Date filed
4/17/2023, 06:53 PM
Previous filing
Mar 7, 2023

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction STRO Common Stock Options Exercise $0 +3.75K +3.83% $0.00 102K Apr 14, 2023 Direct
transaction STRO Common Stock Tax liability -$5.7K -1.3K -1.27% $4.40 100K Apr 14, 2023 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 -3.75K -33.33% $0.00 7.5K Apr 14, 2023 Common Stock 3.75K 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 the RSUs and 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 RSUs vest as to 1/4th of the total shares annually beginning on April 16, 2022, subject to continued service through each vesting date.