NEMSER EARL H

PrivateCIK: 1391400
Location

GREENWICH, CT

NEMSER EARL H (Vice Chairman) sold 3.6% of their position (27.48K shares) of INTERACTIVE BROKERS GROUP, INC. on the open market

Open‑market sale worth $1.79M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 6 sales
InsiderNEMSER EARL HCIK 1391400
DirectorOfficer· Vice Chairman
Since Dec 2018
-27.48K
Net shares
Net seller
$1.79M
Total sold
6
Open market trades
0B · 6S
6
Total transactions
27.48K disposed
Non-Derivative Transactions6

Class A common stock

Indirect
S · Sale

Shares

12.44K

Price / share

$66.18

Trade value

$823.35K

% of position

1.6%
7/31/2025
760.11K747.67K

Class A common stock

Indirect
S · Sale

Shares

2.20K

Price / share

$66.71

Trade value

$146.76K

% of position

0.3%
7/31/2025
747.67K745.47K

Class A common stock

Indirect
S · Sale

Shares

1.20K

Price / share

$62.79

Trade value

$75.35K

% of position

0.2%
8/1/2025
745.47K744.27K

Class A common stock

Indirect
S · Sale

Shares

7.44K

Price / share

$63.94

Trade value

$475.78K

% of position

1.0%
8/1/2025
744.27K736.83K

Class A common stock

Indirect
S · Sale

Shares

3.20K

Price / share

$64.71

Trade value

$207.07K

% of position

0.4%
8/1/2025
736.83K733.63K

Class A common stock

Indirect
S · Sale

Shares

1K

Price / share

$65.66

Trade value

$65.66K

% of position

0.1%
8/1/2025
733.63K732.63K
Total

Net shares

27.48K

Net value

-$1.79M

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 4, 2025 | Finecho