PAULING DAVID

PrivateCIK: 2063633
Location

SOUTH SAN FRANCISCO, CA

PAULING DAVID (Chief Admin. Ofcr. & GC) exercised options at SUTRO BIOPHARMA, INC.

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

M · 1 exercise
InsiderPAULING DAVIDCIK 2063633
IssuerSUTRO BIOPHARMA, INC.CIK 1382101
Officer· Chief Admin. Ofcr. & GC
Since Mar 2026
-277.00
Net shares
Net seller
$5.9K
Total sold
0
Open market trades
0B · 0S
3
Total transactions
675.00 acquired · 952.00 disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+675.00

Price / share

Trade value

% of position

7.2%
3/4/2026
9.35K10.03K

Common Stock

Direct
F · Tax Withholding

Shares

277.00

Price / share

$21.31

Trade value

$5.90K

% of position

2.8%
3/4/2026
10.03K9.75K
Total

Net shares

+398.00

Net value

-$5.90K

Derivative Transactions1

Restricted Stock Units (RSUs)

Direct
M · Option Exercise
Converts to

Common Stock

675.00 shares

Shares

675.00

Strike price

Held after

0.00

Exercisable

3/4/2026
PAULING DAVID — Insider Transaction (Form 4) Filed Mar 6, 2026 | Finecho