CHOW GREGORY K.

PrivateCIK: 1761333
Location

SOUTH SAN FRANCISCO, CA

CHOW GREGORY K. (CFO) exercised options at SUTRO BIOPHARMA, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise
InsiderCHOW GREGORY K.CIK 1761333
IssuerSUTRO BIOPHARMA, INC.CIK 1382101
Officer· CFO
Since Mar 2026
0.00
Net shares
Net seller
$0.00
Total acquired
0
Open market trades
0B · 0S
2
Total transactions
2.50K acquired · 2.50K disposed
Non-Derivative Transactions1

Common Stock

Direct
M · Option Exercise

Shares

+2.50K

Price / share

Trade value

% of position

112.4%
6/2/2026
2.23K4.72K
Total

Net shares

+2.50K

Net value

$0.00

Derivative Transactions1

Restricted Stock Units (RSUs)

Direct
M · Option Exercise
Converts to

Common Stock

2.50K shares

Shares

2.50K

Strike price

Held after

7.50K

Exercisable

6/2/2026
CHOW GREGORY K. — Insider Transaction (Form 4) Filed Jun 2, 2026 | Finecho