NEMSER EARL H

PrivateCIK: 1391400
Location

GREENWICH, CT

NEMSER EARL H (Vice Chairman) sold 3.6% of their position (25.68K shares) of INTERACTIVE BROKERS GROUP, INC. on the open market

Open‑market sale worth $1.64M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 4 sales
InsiderNEMSER EARL HCIK 1391400
DirectorOfficer· Vice Chairman
Since Dec 2018
-25.68K
Net shares
Net seller
$1.64M
Total sold
4
Open market trades
0B · 4S
4
Total transactions
25.68K disposed
Non-Derivative Transactions4

Class A common stock

Indirect
S · Sale

Shares

12.64K

Price / share

$63.47

Trade value

$802.32K

% of position

1.8%
8/6/2025
706.95K694.31K

Class A common stock

Indirect
S · Sale

Shares

200.00

Price / share

$64.16

Trade value

$12.83K

% of position

0.0%
8/6/2025
694.31K694.11K

Class A common stock

Indirect
S · Sale

Shares

12.40K

Price / share

$63.94

Trade value

$792.86K

% of position

1.8%
8/7/2025
694.11K681.71K

Class A common stock

Indirect
S · Sale

Shares

441.00

Price / share

$64.35

Trade value

$28.38K

% of position

0.1%
8/7/2025
681.71K681.27K
Total

Net shares

25.68K

Net value

-$1.64M

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 8, 2025 | Finecho