Edward C. Albini - Sep 24, 2021 Form 4 Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role
CFO and Secretary
Signature
/s/ Edward C. Albini
Stock symbol
STRO
Transactions as of
Sep 24, 2021
Transactions value $
-$47,690
Form type
4
Date filed
9/28/2021, 06:53 PM
Next filing
Feb 1, 2022

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction STRO Common Stock Options Exercise $0 +7.17K +50.52% $0.00 21.4K Sep 24, 2021 Direct
transaction STRO Common Stock Tax liability -$47.7K -2.48K -11.6% $19.23 18.9K Sep 24, 2021 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 -7.17K -100% $0.00* 0 Sep 24, 2021 Common Stock 7.17K 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 1/3rd of the total shares annually beginning on September 26, 2019, subject to continued service through each vesting date.