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

Rhea-AI Filing Summary

Interactive Brokers Group (IBKR) Vice Chairman and Director Earl H. Nemser reported significant changes in beneficial ownership following two key events:

1. A stock donation of 500 shares of Class A common stock to a nonprofit organization on June 23, 2025, at $0 per share.

2. A four-for-one stock split effective June 17, 2025, which affected Nemser's holdings as follows:

• Direct ownership increased by 321,234 shares to a total of 427,812 shares
• Indirect ownership through EN Holdings LLC increased by 300,000 shares to 400,000 shares

Following these transactions, Nemser's total beneficial ownership stands at 827,812 shares, held through both direct ownership (427,812 shares) and indirect ownership via EN Holdings LLC (400,000 shares). The holdings include vested and unvested restricted stock units awarded under the amended 2007 Stock Incentive Plan.

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).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Nemser Earl H

(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)
	Vice Chairman

3. Date of Earliest Transaction (Month/Day/Year)
06/23/2025

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	06/23/2025		G(1)		500	D	$0	427,812(2)(4)	D
Class A common stock								400,000(3)(5)	I	by EN Holdings LLC

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. The Reporting Person donated 500 shares of IBKR Class A common stock to a nonprofit organization.

2. 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.

3. Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.

4. On June 17, 2025, the Issuer effected a four-for-one split of its common stock, resulting in the reporting person's ownership of 321,234 additional shares of common stock.

5. On June 17, 2025, the Issuer effected a four-for-one split of its common stock, resulting in the reporting person's ownership of 300,000 additional shares of common stock.

	/s/ Raymond Bussiere as authorized signatory for Earl H. Nemser	06/24/2025
	** 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

How many IBKR shares did Vice Chairman Earl Nemser donate on June 23, 2025?

According to the Form 4 filing, Earl Nemser donated 500 shares of IBKR Class A common stock to a nonprofit organization on June 23, 2025.

What was the impact of IBKR's June 2025 stock split on Earl Nemser's holdings?

The four-for-one stock split on June 17, 2025 resulted in Earl Nemser receiving an additional 321,234 shares of direct holdings and 300,000 shares of indirect holdings through EN Holdings LLC.

How many IBKR shares does Earl Nemser own directly after the reported transaction?

Following the reported transaction, Earl Nemser directly owns 427,812 shares of IBKR Class A common stock, which includes vested and unvested restricted stock units awarded under the amended 2007 Stock Incentive Plan.

What is Earl Nemser's indirect ownership of IBKR stock through EN Holdings LLC?

Earl Nemser indirectly owns 400,000 shares of IBKR Class A common stock through EN Holdings LLC, which is owned by the reporting person and his affiliates.

What positions does Earl Nemser hold at Interactive Brokers (IBKR)?

Earl Nemser serves as both a Director and Vice Chairman of Interactive Brokers Group, Inc. (IBKR), as indicated in the Form 4 filing.