[Form 4] Interactive Brokers Group, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Paul J. Brody, Chief Financial Officer and Director of Interactive Brokers Group, Inc. (IBKR), reported multiple open-market sales of Class A common stock on September 23 and 24, 2025. The Form 4 shows four sale transactions totaling 33,416 shares (6,227; 12,798; 13,464; 927) executed at weighted-average prices with ranges between $64.11 and $66.15. The filings show the number of Class A shares indirectly held by PJB Holdings LLC decreased across the reported transactions from 86,832 to 59,643. The Form is signed on behalf of Mr. Brody by an authorized signatory on September 25, 2025. Footnote disclosure indicates a separate position of 2,885,496 shares related to vested and unvested restricted stock units under the company Plan.

Positive

• Timely, compliant disclosure of insider transactions by the reporting person, including weighted-average prices and price ranges
• Clear identification of reporting person roles: Chief Financial Officer and Director

Negative

• Insider dispositions totaling 33,416 shares on September 23-24, 2025 reduced indirect holdings reported for PJB Holdings LLC from 86,832 to 59,643 shares
• Price pressure noted by multiple sales executed across price ranges ($64.11–$66.15), which reduced the reporter's indirect stake

Insights

Financial Analyst

TL;DR: Insider sales of 33,416 IBKR shares reported; transparency maintained but sales reduce indirect holdings materially.

The Form 4 discloses four open-market dispositions totaling 33,416 Class A shares on September 23-24, 2025 at weighted-average prices within the disclosed ranges of $64.11–$66.15. The reported indirect holdings held via PJB Holdings LLC decline from 86,832 to 59,643 shares across these transactions. The filing includes a separate disclosure of 2,885,496 shares tied to vested and unvested restricted stock units under the 2007 Plan. For investors, the data are factual reporting of insider activity and do not include commentary on intent or company performance.

Corporate Governance Expert

TL;DR: Timely, compliant reporting by officer/director; multiple small-to-midsize sales disclosed with required footnotes.

The disclosure meets Section 16 reporting requirements, identifying Mr. Brody as both CFO and a director and providing weighted-average prices and price ranges for multiple transactions. The form clarifies indirect ownership through PJB Holdings LLC and provides footnote context for the larger 2,885,496-share position comprised of RSUs. The filing is complete in its factual details and signed by an authorized representative.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Brody Paul Jonathan

(Last) (First) (Middle)

ONE PICKWICK PLAZA

(Street)

GREENWICH CT 06830

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Interactive Brokers Group, Inc. [ IBKR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/23/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A common stock	09/23/2025		S		6,227	D	$64.9(2)	86,832(1)	I	by PJB Holdings LLC
Class A common stock	09/23/2025		S		12,798	D	$65.49(3)	74,034(1)	I	by PJB Holdings LLC
Class A common stock	09/24/2025		S		13,464	D	$64.76(4)	60,570(1)	I	by PJB Holdings LLC
Class A common stock	09/24/2025		S		927	D	$65.54(5)	59,643(1)	I	by PJB Holdings LLC
Class A common stock								2,885,496(6)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents number of securities acquired by a limited liability company, owned indirectly by the Reporting Person, 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 interest in IBG LLC.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.11 to $65.10. 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 footnotes (2) - (5) to this Form 4.

3. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.11 to $66.09.

4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.27 to $65.26.

5. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.27 to $66.15.

6. 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.

	/s/ Raymond Bussiere as authorized signatory for Paul J. Brody	09/25/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transactions did Paul J. Brody report on Form 4 for IBKR?

The Form 4 reports four open-market sales on September 23 and 24, 2025 totaling 33,416 Class A shares (6,227; 12,798; 13,464; 927).

At what prices were the IBKR shares sold according to the Form 4?

The Form discloses weighted-average prices and ranges for the transactions, with reported price ranges between $64.11 and $66.15.

How did these sales affect Paul J. Brody's indirect holdings?

The reported indirect holdings held by PJB Holdings LLC shown on the Form decreased from 86,832 shares to 59,643 shares across the disclosed transactions.

Does the Form 4 disclose other holdings by the reporting person?

Yes. Footnote (6) discloses a position of 2,885,496 shares related to vested and unvested restricted stock units awarded under the amended 2007 Stock Incentive Plan.

Who signed the Form 4 and when?

The Form 4 was signed on behalf of Paul J. Brody by Raymond Bussiere as authorized signatory on September 25, 2025.

Does the Form 4 state the reporting person's roles at Interactive Brokers?

Yes. The filer is identified as both a Director and the Chief Financial Officer of Interactive Brokers Group, Inc.