Lawrence E. Harris - 29 Oct 2025 Form 4 Insider Report for Interactive Brokers Group, Inc. (IBKR)

Role: Director
Signature: /s/ Raymond Bussiere as authorized signatory for Lawrence E. Harris
Issuer symbol: IBKR
Transactions as of: 29 Oct 2025
Transactions value $: -$734,505
Form type: 4
Filing time: 31 Oct 2025, 16:47:06 UTC
Previous filing: 29 Oct 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Harris Lawrence E	Director	ONE PICKWICK PLAZA, GREENWICH	/s/ Raymond Bussiere as authorized signatory for Lawrence E. Harris	31 Oct 2025	0001406586

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IBKR	Class A common stock	Sale	-$735K	-10.6K	-5.08%	$69.00	199K	29 Oct 2025	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.71 to $69.20. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this footnote (1).

Content

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.71 to $69.20. The Reporting Person undertakes to provide Interactive Brokers Group, Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in this footnote (1).