Jane Chung - Aug 9, 2021 Form 4 Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role
Chief Commercial Officer
Signature
/s/ Edward C. Albini as attorney-in-fact
Stock symbol
STRO
Transactions as of
Aug 9, 2021
Transactions value $
$0
Form type
4
Date filed
8/11/2021, 05:21 PM
Next filing
Mar 7, 2022

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 Stock Option (right to buy) Award $0 +160K $0.00 160K Aug 9, 2021 Common Stock 160K $18.37 Direct F1
transaction STRO Restricted Stock Unit (RSU) Award $0 +75K $0.00 75K Aug 9, 2021 Common Stock 75K Direct F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The option vests as to 1/4th of the total shares on August 9, 2022 and then 1/48th of the total shares vest monthly thereafter, with 100% of the total shares vested and exercisable on August 9, 2025, subject to the reporting person's provision of service to the issuer on each vesting date.
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 August 9, 2022, subject to the reporting person's provision of service to the issuer on each vesting date.