ETERGINO THOMAS J

PrivateCIK: 1336088
Location

NEW CANAAN, CT

ETERGINO THOMAS J (Chief Financial Officer) exercised options at 1STDIBS.COM, INC.

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

M · 3 exercises
InsiderETERGINO THOMAS JCIK 1336088
Issuer1STDIBS.COM, INC.CIK 1600641
Officer· Chief Financial Officer
Since Mar 2022
-17.60K
Net shares
Net seller
$83.2K
Total sold
0
Open market trades
0B · 0S
7
Total transactions
34.47K acquired · 52.07K disposed
Non-Derivative Transactions4

Common Stock

Direct
M · Option Exercise

Shares

+12.13K

Price / share

Trade value

% of position

3.6%
9/8/2026
333.42K345.55K

Common Stock

Direct
M · Option Exercise

Shares

+11.17K

Price / share

Trade value

% of position

3.2%
9/8/2026
345.55K356.72K

Common Stock

Direct
M · Option Exercise

Shares

+11.18K

Price / share

Trade value

% of position

3.1%
9/8/2026
356.72K367.89K

Common Stock

Direct
F · Tax Withholding

Shares

17.60K

Price / share

$4.73

Trade value

$83.24K

% of position

4.8%
9/8/2026
367.89K350.29K
Total

Net shares

+16.87K

Net value

-$83.24K

Derivative Transactions3

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

12.13K shares

Shares

12.13K

Strike price

Held after

121.25K

Exercisable

9/8/2026

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

11.17K shares

Shares

11.17K

Strike price

Held after

111.72K

Exercisable

9/8/2026

Restricted Stock Units

Direct
M · Option Exercise
Converts to

Common Stock

11.18K shares

Shares

11.18K

Strike price

Held after

67.05K

Exercisable

9/8/2026
ETERGINO THOMAS J — Insider Transaction (Form 4) Filed Sep 10, 2026 | Finecho