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 · 3 exercises
InsiderPAULING DAVIDCIK 2063633
IssuerSUTRO BIOPHARMA, INC.CIK 1382101
Officer· Chief Admin. Ofcr. & GC
Since Mar 2026
+36.28K
Net shares
Net buyer
$31.2K
Total sold
0
Open market trades
0B · 0S
10
Total transactions
41.50K acquired · 5.22K disposed
Non-Derivative Transactions5

Common Stock

Direct
M · Option Exercise

Shares

+500.00

Price / share

Trade value

% of position

7.0%
3/1/2026
7.17K7.67K

Common Stock

Direct
M · Option Exercise

Shares

+842.00

Price / share

Trade value

% of position

11.0%
3/1/2026
7.67K8.52K

Common Stock

Direct
F · Tax Withholding

Shares

551.00

Price / share

$20.47

Trade value

$11.28K

% of position

6.5%
3/1/2026
8.52K7.96K

Common Stock

Direct
M · Option Exercise

Shares

+2.36K

Price / share

Trade value

% of position

29.6%
3/2/2026
7.96K10.32K

Common Stock

Direct
F · Tax Withholding

Shares

970.00

Price / share

$20.55

Trade value

$19.93K

% of position

9.4%
3/2/2026
10.32K9.35K
Total

Net shares

+2.18K

Net value

-$31.21K

Derivative Transactions5

Restricted Stock Units (RSUs)

Direct
M · Option Exercise
Converts to

Common Stock

500.00 shares

Shares

500.00

Strike price

Held after

500.00

Exercisable

3/1/2026

Restricted Stock Units (RSUs)

Direct
M · Option Exercise
Converts to

Common Stock

842.00 shares

Shares

842.00

Strike price

Held after

1.69K

Exercisable

3/1/2026

Restricted Stock Units (RSUs)

Direct
M · Option Exercise
Converts to

Common Stock

2.36K shares

Shares

2.36K

Strike price

Held after

7.07K

Exercisable

3/2/2026

Restricted Stock Units (RSUs)

Direct
A · Award
Converts to

Common Stock

4.20K shares

Shares

+4.20K

Strike price

Held after

4.20K

Exercisable

3/2/2026

Stock Option (right to buy)

Direct
A · Award
Converts to

Common Stock

33.60K shares

Shares

+33.60K

Strike price

20.55

Held after

33.60K

Exercisable

3/2/2026
PAULING DAVID — Insider Transaction (Form 4) Filed Mar 3, 2026 | Finecho