Lori A. Conkling - 31 Dec 2025 Form 4 Insider Report for Interactive Brokers Group, Inc. (IBKR)

Role: Director
Signature: /s/ Matthew Kelly as authorized signatory for Lori A Conkling
Issuer symbol: IBKR
Transactions as of: 31 Dec 2025
Net transactions value: +$25,017
Form type: 4
Filing time: 07 Jan 2026, 16:01:05 UTC
Previous filing: 12 May 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Conkling Lori A	Director	ONE PICKWICK PLAZA, GREENWICH	/s/ Matthew Kelly as authorized signatory for Lori A Conkling	07 Jan 2026	0002067952

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IBKR	Class A common stock	Award	$0	+1,167		$0.000000	1,167	31 Dec 2025	Direct	F1, F2
transaction	IBKR	Class A common stock	Award	$25,017	+389	+33%	$64.31	1,556	31 Dec 2025	Direct	F3, F4, F5

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

Explanation of Responses:

Id	Content
F1	This represents a grant of restricted stock units under the 2007 Stock Incentive Plan as amended ("Plan") that will vest in five equal installments, beginning December 31, 2026.
F2	This amount includes unvested restricted stock units that were awarded under the Plan.
F3	This represents an annual grant of restricted stock units under the Plan for being a member of the issuer's Board of Directors, which vested immediately on 12/31/2025.
F4	The price represents the closing price of the issuer's Class A common stock on December 31, 2025.
F5	This amount includes (a) Class A common stock attributable to vested restricted stock units that were awarded under the Plan and (b) unvested restricted stock units that were awarded under the Plan.