Earl H. Nemser - 31 Jul 2026 Form 4 Insider Report for Interactive Brokers Group, Inc. (IBKR)

Reporting relationship: Vice Chairman, Director
Issuer ticker: IBKR
Reported as of: 31 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 04 Aug 2026, 16:27:54 UTC
Prior SEC filing: 28 May 2026
Source filing: View source filing
Reporting owner signature: /s/ Raymond Bussiere as authorized signatory for Earl H Nemser

Key filing fact

Earl H. Nemser filed Form 4 for Interactive Brokers Group, Inc. (IBKR) on 04 Aug 2026.

Key facts

This page summarizes Earl H. Nemser's Form 4 filing for Interactive Brokers Group, Inc. (IBKR).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 04 Aug 2026, 16:27.

Change

Previous filing in this sequence was filed on 28 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001391400 Primary reporting owner

Nemser Earl H

Relationship: Vice Chairman, Director
Address: ONE PICKWICK PLAZA, GREENWICH
Signature: /s/ Raymond Bussiere as authorized signatory for Earl H Nemser
Signature date: 04 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

IBKR transaction

Class A common stock

Award

Transaction value
Shares: +803,568
Change %
Price: $87.99^*
Shares after: 803,568
Date: 31 Jul 2026
Ownership: By EN Holdings LLC
Footnotes: F1, F2

IBKR holding

Class A common stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 429,344
Date: 31 Jul 2026
Ownership: Direct
Footnotes: F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 3 footnotes

Footnote F1

Represents number of securities acquired by a limited liability company, owned by the Reporting Person and his affiliates, in a partial redemption of its interest in IBG Holdings LLC. Such securities were acquired by IBG Holdings LLC from Interactive Brokers Group, Inc. immediately prior to the redemption in exchange for membership interests in IBG LLC.

Footnote F2

The per share price provided represents the closing price of the issuer's Class A common stock on 7/31/2026, the date when the exchange described in footnote (1) took place.

Footnote F3

This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the amended 2007 Stock Incentive Plan ("Plan") and (b) unvested restricted stock units that were awarded under the Plan.