NEMSER EARL H

PrivateCIK: 1391400
Location

GREENWICH, CT

NEMSER EARL H (Vice Chairman) sold 3.8% of their position (25.68K shares) of INTERACTIVE BROKERS GROUP, INC. on the open market

Open‑market sale worth $1.69M — a minor trim. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 3 sales
InsiderNEMSER EARL HCIK 1391400
DirectorOfficer· Vice Chairman
Since Dec 2018
-25.68K
Net shares
Net seller
$1.69M
Total sold
3
Open market trades
0B · 3S
3
Total transactions
25.68K disposed
Non-Derivative Transactions3

Class A common stock

Indirect
S · Sale

Shares

10.20K

Price / share

$65.60

Trade value

$669.12K

% of position

1.5%
8/8/2025
681.27K671.07K

Class A common stock

Indirect
S · Sale

Shares

2.64K

Price / share

$65.94

Trade value

$174.15K

% of position

0.4%
8/8/2025
671.07K668.43K

Class A common stock

Indirect
S · Sale

Shares

12.84K

Price / share

$66.09

Trade value

$848.66K

% of position

1.9%
8/11/2025
668.43K655.59K
Total

Net shares

25.68K

Net value

-$1.69M

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 12, 2025 | Finecho