NEMSER EARL H

PrivateCIK: 1391400
Location

GREENWICH, CT

NEMSER EARL H (Vice Chairman) sold 11.9% of their position (53.90K shares) of INTERACTIVE BROKERS GROUP, INC. on the open market

Open‑market sale worth $3.45M — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 2 sales
InsiderNEMSER EARL HCIK 1391400
DirectorOfficer· Vice Chairman
Since Dec 2018
-53.90K
Net shares
Net seller
$3.45M
Total sold
2
Open market trades
0B · 2S
2
Total transactions
53.90K disposed
Non-Derivative Transactions2

Class A common stock

Indirect
S · Sale

Shares

33.38K

Price / share

$63.86

Trade value

$2.13M

% of position

7.4%
8/14/2025
453.90K420.52K

Class A common stock

Indirect
S · Sale

Shares

20.52K

Price / share

$64.22

Trade value

$1.32M

% of position

4.9%
8/14/2025
420.52K400K
Total

Net shares

53.90K

Net value

-$3.45M

Derivative Transactions0
No derivative transactions reported
Non-Derivative Holdings (Post-Transaction)1

Class A common stock

Direct
Shares owned427.81K
Total
427.81K direct427.81K
Derivative Holdings (Post-Transaction)0
No derivative holdings reported
NEMSER EARL H — Insider Transaction (Form 4) Filed Aug 15, 2025 | Finecho