Denis Mendonca - 09 May 2025 Form 4 Insider Report for Interactive Brokers Group, Inc. (IBKR)

Role: Chief Accounting Officer
Signature: /s/ Denis Mendonca
Issuer symbol: IBKR
Transactions as of: 09 May 2025
Transactions value $: -$457,875
Form type: 4
Filing time: 03 Jun 2025, 16:26:51 UTC
Previous filing: 07 Jan 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mendonca Denis	Chief Accounting Officer	ONE PICKWICK PLAZA, GREENWICH	/s/ Denis Mendonca	03 Jun 2025	0001665345

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	IBKR	Class A common stock	Tax liability	-$457,875	-2,467	-6.4%	$185.6	36,268	09 May 2025	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	The price represents the closing price of the issuer's Class A common stock as of May 9, 2025, the vesting date.
F2	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.