David Pauling - Apr 4, 2025 Form 4 Insider Report for SUTRO BIOPHARMA, INC. (STRO)

Role
Chief Admin. Ofcr. & GC
Signature
/s/ David Pauling
Stock symbol
STRO
Transactions as of
Apr 4, 2025
Transactions value $
$0
Form type
4
Date filed
4/8/2025, 04:05 PM
SEC
View on sec.gov

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 +102K $0.00 102K Apr 4, 2025 Common Stock 102K $0.55 Direct F1
transaction STRO Restricted Stock Units (RSUs) Award $0 +94.3K $0.00 94.3K Apr 4, 2025 Common Stock 94.3K 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 2.0833% of the total award monthly, beginning on May 4, 2025, with 100% of the award being vested and exercisable on April 4, 2029, 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 award annually beginning on March 2, 2026, subject to the reporting person's provision of service to the issuer on each vesting date.