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

Rhea-AI Filing Summary

Paul J. Brody, who serves as Chief Financial Officer and a Director of Interactive Brokers Group, Inc. (IBKR), filed an amended Form 4 reporting insider transactions dated 09/19/2025. The amendment adds previously omitted sales of 6,928 shares of Class A common stock sold at a weighted average price of $64.66 (individual sale prices ranged from $64.32 to $65.15). Following the reported transactions, the filing shows 101,473 Class A shares beneficially owned indirectly by PJB Holdings LLC and an additional line reporting 2,885,496 shares tied to restricted stock units (vested and unvested) as described in the footnotes. The amendment states the sales reduce the number of shares indirectly beneficially owned and corrects the original Form 4; it was signed by an authorized signatory on 10/03/2025.

Positive

• Amended disclosure corrects prior omission and updates beneficial ownership
• Sale details include a weighted average price and explicit price range, increasing transparency

Negative

• None.

Insights

Insider Transactions Analyst

Amendment records small open-market sales by the CFO on 09/19/2025.

The filing explicitly reports 6,928 Class A shares sold at a weighted average of $64.66, with sale prices ranging from $64.32 to $65.15.

This amended Form 4 corrects the prior report by adding the omitted sales and shows the post-transaction indirect beneficial ownership at 101,473 shares via PJB Holdings LLC plus a separate reported amount of 2,885,496 shares linked to restricted stock units.

Corporate Governance Specialist

Filing is procedural: an amendment to correct previously omitted sales.

The remarks state the amendment adds shares sold on 09/19/2025 and reduces previously reported indirect holdings accordingly; all other originally reported information is described as accurate.

The form is signed by an authorized signatory on 10/03/2025, showing the company received an updated, corrected disclosure.

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
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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)
09/19/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)
09/23/2025

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	09/19/2025		S		6,928	D	$64.66(2)	101,473(1)	I	by PJB Holdings LLC
Class A common stock								2,885,496(3)	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 $64.32 to $65.15. 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 footnote (2) to this Form 4.

3. 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.

Remarks:

This amended Form 4 is filed to include shares sold on September 19, 2025, inadvertently excluded from the original filing. Subsequently filed Form 4s through October 1, 2025 are hereby amended to reduce the number of shares indirectly beneficially owned at the end of the period reported on such form (which are shown in column 5) by the shares shown to be sold in this amended report. All other information contained on the original Form 4 was accurately reported.

	/s/ Raymond Bussiere as authorized signatory for Paul J. Brody	10/03/2025
	** 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.
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FAQ

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

The amendment reports sales of 6,928 Class A shares on 09/19/2025 at a weighted average price of $64.66, and updates post-transaction beneficial ownership.

How many Class A shares does Paul J. Brody beneficially own after the reported transactions?

The filing shows 101,473 Class A shares beneficially owned indirectly by PJB Holdings LLC; the filing also references 2,885,496 shares related to restricted stock units.

Why was this Form 4 amended?

The filing states it was amended to include shares sold on 09/19/2025 that were inadvertently excluded from the original filing, reducing previously reported indirect holdings.

At what prices were the shares sold?

The reported sales were executed at prices ranging from $64.32 to $65.15, with a weighted average of $64.66.

Who signed the amended Form 4 and when?

The form was signed by /s/ Raymond Bussiere as authorized signatory for Paul J. Brody on 10/03/2025.