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

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4
Rhea-AI Filing Summary

Earl H. Nemser, Vice Chairman and director of Interactive Brokers Group, Inc. (IBKR), reported multiple sales of Class A common stock on this Form 4. The filing shows sales executed on 08/08/2025 and 08/11/2025 by EN Holdings LLC, an entity owned by the reporting person and his affiliates. The Form lists sales of 10,200 shares at a weighted average price of $65.60, 2,641 shares at $65.94, and 12,841 shares at $66.09, with price ranges disclosed in footnotes.

The filing reports post-transaction beneficial ownership figures associated with EN Holdings LLC including 671,068, 668,427 and 655,586 shares on the respective lines, and separately notes 427,812 shares attributable to vested and unvested restricted stock units awarded under the company plan. The form is signed by an authorized signatory on 08/12/2025.

Earl H. Nemser, Vicepresidente e amministratore di Interactive Brokers Group, Inc. (IBKR), ha dichiarato pi霉 vendite di azioni ordinarie di Classe A in questo Form 4. La comunicazione indica vendite eseguite il 08/08/2025 e l'11/08/2025 da EN Holdings LLC, un'entit脿 di propriet脿 del dichiarante e delle sue affiliate. Il modulo riporta la vendita di 10.200 azioni a un prezzo medio ponderato di $65,60, 2.641 azioni a $65,94 e 12.841 azioni a $66,09, con intervalli di prezzo specificati nelle note a pi猫 di pagina.

Il documento segnala i valori di partecipazione post-transazione relativi a EN Holdings LLC, pari rispettivamente a 671.068, 668.427 e 655.586 azioni sulle relative righe, e indica separatamente 427.812 azioni attribuibili a unit脿 azionarie vincolate, vestite e non vestite, assegnate ai sensi del piano societario. Il modulo 猫 firmato da un firmatario autorizzato il 08/12/2025.

Earl H. Nemser, vicepresidente y director de Interactive Brokers Group, Inc. (IBKR), inform贸 varias ventas de acciones ordinarias Clase A en este Form 4. El registro muestra ventas ejecutadas el 08/08/2025 y el 11/08/2025 por EN Holdings LLC, una entidad propiedad del declarante y sus afiliadas. El formulario lista ventas de 10.200 acciones a un precio medio ponderado de $65,60, 2.641 acciones a $65,94 y 12.841 acciones a $66,09, con los rangos de precio detallados en las notas a pie de p谩gina.

La presentaci贸n informa las cifras de titularidad beneficiosa posteriores a la transacci贸n relacionadas con EN Holdings LLC, incluyendo 671.068, 668.427 y 655.586 acciones en las l铆neas respectivas, y se帽ala por separado 427.812 acciones atribuibles a unidades restringidas de acciones, adquiridas y no adquiridas, otorgadas bajo el plan de la compa帽铆a. El formulario est谩 firmado por un firmante autorizado el 08/12/2025.

Interactive Brokers Group, Inc. (IBKR)鞚� 攵�須岇灔 瓴� 鞚挫偓鞚� Earl H. Nemser電� 鞚� Form 4鞐愳劀 韥措灅鞀� A 氤错喌欤检棎 雽�頃� 鞐煬 瓯挫潣 毵り皝鞚� 氤搓碃頄堨姷雼堧嫟. 鞝滌稖靹滊鞐愲姅 2025-08-08 氚� 2025-08-11鞐� 氤搓碃鞚戈臣 攴� 瓿勳棿靷皜 靻岇湢頃� 氩曥澑 EN Holdings LLC鞐� 鞚橅暣 鞁ろ枆霅� 毵り皝鞚� 響滌嫓霅橃柎 鞛堨姷雼堧嫟. 頃措嫻 Form鞐愲姅 臧�欷� 韽夑窢 臧�瓴� $65.60鞐� 10,200欤�, $65.94鞐� 2,641欤�, $66.09鞐� 12,841欤检潣 毵り皝鞚� 旮办灛霅橃柎 鞛堨溂氅�, 臧�瓴� 氩旍渼電� 臧侅＜鞐� 瓿店皽霅橃柎 鞛堨姷雼堧嫟.

靹滊電� EN Holdings LLC鞕� 甏�霠悳 瓯半灅 頉� 鞁れ鞝� 氤挫湢 歆�攵勳潉 臧� 頃鞐� 雽�頃� 671,068欤�, 668,427欤�, 655,586欤茧 氤搓碃頃橁碃, 氤勲弰搿� 須岇偓 瓿勴殟鞐� 霐半澕 攵�鞐悳 頇曥爼 氚� 氙疙檿鞝� 鞝滍暅欤检嫕雼渼鞐� 攴�靻嶋悩電� 427,812欤茧ゼ 氇呾嫓頃╇媹雼�. 鞚� 氍胳劀電� 2025-08-12鞐� 甓岉暅 鞛堧姅 靹滊獏鞛愱皜 靹滊獏頄堨姷雼堧嫟.

Earl H. Nemser, vice-pr茅sident et administrateur d'Interactive Brokers Group, Inc. (IBKR), a d茅clar茅 plusieurs cessions d'actions ordinaires de cat茅gorie A dans ce Form 4. Le d茅p么t indique des ventes effectu茅es les 08/08/2025 et 11/08/2025 par EN Holdings LLC, une entit茅 d茅tenue par la personne d茅clarante et ses affili茅s. Le formulaire recense des ventes de 10 200 actions au prix moyen pond茅r茅 de $65,60, 2 641 actions 脿 $65,94 et 12 841 actions 脿 $66,09, les fourchettes de prix 茅tant pr茅cis茅es en notes de bas de page.

Le d茅p么t fait 茅tat des d茅tentions b茅n茅ficiaires post-op茅ration associ茅es 脿 EN Holdings LLC, soit respectivement 671 068, 668 427 et 655 586 actions sur les lignes correspondantes, et indique s茅par茅ment 427 812 actions attribuables 脿 des unit茅s d'actions restreintes acquises et non acquises attribu茅es dans le cadre du plan de la soci茅t茅. Le formulaire est sign茅 par un signataire autoris茅 le 08/12/2025.

Earl H. Nemser, stellvertretender Vorsitzender und Direktor von Interactive Brokers Group, Inc. (IBKR), meldete in diesem Form 4 mehrere Verk盲ufe von Inhaberaktien der Klasse A. Die Einreichung weist Verk盲ufe am 08.08.2025 und 11.08.2025 durch EN Holdings LLC aus, eine Gesellschaft, die dem Berichtserstatter und seinen verbundenen Unternehmen geh枚rt. Das Formular f眉hrt Verk盲ufe von 10.200 Aktien zu einem gewichteten Durchschnittspreis von $65,60, 2.641 Aktien zu $65,94 und 12.841 Aktien zu $66,09 auf; Preisbereiche sind in Fu脽noten angegeben.

Die Einreichung berichtet nach der Transaktion geltende wirtschaftliche Eigentumsangaben f眉r EN Holdings LLC in H枚he von 671.068, 668.427 und 655.586 Aktien auf den jeweiligen Zeilen und weist getrennt 427.812 Aktien aus, die auf unternehmensplanvergebene, bereits ausgestandene und noch nicht ausgestandene Restricted Stock Units entfallen. Das Formular ist am 08.12.2025 von einem bevollm盲chtigten Unterzeichner unterzeichnet.

Positive
  • Timely and detailed SEC disclosure of insider sales with weighted-average prices and price ranges provided in footnotes.
  • Substantial continued indirect ownership is documented: EN Holdings LLC is shown with post-transaction beneficial ownership figures (e.g., 655,586 to 671,068 shares) and 427,812 RSU-related shares.
Negative
  • Insider sales reported: a total of 25,682 Class A shares were sold across 08/08/2025 and 08/11/2025 at weighted-average prices of $65.60, $65.94, and $66.09.
  • Reduction in holdings is reflected by the post-transaction beneficial ownership figures shown on the form.

Insights

TL;DR: Routine disclosure of insider sales by the vice chairman; sizable indirect holdings remain after disclosed transactions.

The Form 4 documents three grouped sales by EN Holdings LLC on 08/08/2025 and 08/11/2025 totaling 25,682 Class A shares sold at weighted-average prices reported as $65.60, $65.94, and $66.09. Footnotes disclose the price ranges for the component trades and confirm EN Holdings LLC is owned by the reporting person and affiliates. Post-transaction beneficial ownership figures are provided on each line and a separate entry discloses 427,812 shares from vested and unvested restricted stock units. For investors this is a transparent, contemporaneous reporting of insider sales; it documents liquidity events but does not itself explain motivation.

TL;DR: Disclosure appears complete and includes explanatory footnotes; continued indirect ownership remains material.

The filer used EN Holdings LLC to report indirect ownership and provided weighted-average prices plus ranges for the multiple transactions. The Form includes an explanation that EN Holdings LLC is owned by the reporting person and affiliates and discloses restricted stock unit amounts attributable to the reporting person. The filing is signed by an authorized signatory on 08/12/2025. From a governance perspective this is a standard Section 16 disclosure of insider sales with supporting details; the filing preserves regulatory transparency but does not alter governance control disclosures shown on the form.

Earl H. Nemser, Vicepresidente e amministratore di Interactive Brokers Group, Inc. (IBKR), ha dichiarato pi霉 vendite di azioni ordinarie di Classe A in questo Form 4. La comunicazione indica vendite eseguite il 08/08/2025 e l'11/08/2025 da EN Holdings LLC, un'entit脿 di propriet脿 del dichiarante e delle sue affiliate. Il modulo riporta la vendita di 10.200 azioni a un prezzo medio ponderato di $65,60, 2.641 azioni a $65,94 e 12.841 azioni a $66,09, con intervalli di prezzo specificati nelle note a pi猫 di pagina.

Il documento segnala i valori di partecipazione post-transazione relativi a EN Holdings LLC, pari rispettivamente a 671.068, 668.427 e 655.586 azioni sulle relative righe, e indica separatamente 427.812 azioni attribuibili a unit脿 azionarie vincolate, vestite e non vestite, assegnate ai sensi del piano societario. Il modulo 猫 firmato da un firmatario autorizzato il 08/12/2025.

Earl H. Nemser, vicepresidente y director de Interactive Brokers Group, Inc. (IBKR), inform贸 varias ventas de acciones ordinarias Clase A en este Form 4. El registro muestra ventas ejecutadas el 08/08/2025 y el 11/08/2025 por EN Holdings LLC, una entidad propiedad del declarante y sus afiliadas. El formulario lista ventas de 10.200 acciones a un precio medio ponderado de $65,60, 2.641 acciones a $65,94 y 12.841 acciones a $66,09, con los rangos de precio detallados en las notas a pie de p谩gina.

La presentaci贸n informa las cifras de titularidad beneficiosa posteriores a la transacci贸n relacionadas con EN Holdings LLC, incluyendo 671.068, 668.427 y 655.586 acciones en las l铆neas respectivas, y se帽ala por separado 427.812 acciones atribuibles a unidades restringidas de acciones, adquiridas y no adquiridas, otorgadas bajo el plan de la compa帽铆a. El formulario est谩 firmado por un firmante autorizado el 08/12/2025.

Interactive Brokers Group, Inc. (IBKR)鞚� 攵�須岇灔 瓴� 鞚挫偓鞚� Earl H. Nemser電� 鞚� Form 4鞐愳劀 韥措灅鞀� A 氤错喌欤检棎 雽�頃� 鞐煬 瓯挫潣 毵り皝鞚� 氤搓碃頄堨姷雼堧嫟. 鞝滌稖靹滊鞐愲姅 2025-08-08 氚� 2025-08-11鞐� 氤搓碃鞚戈臣 攴� 瓿勳棿靷皜 靻岇湢頃� 氩曥澑 EN Holdings LLC鞐� 鞚橅暣 鞁ろ枆霅� 毵り皝鞚� 響滌嫓霅橃柎 鞛堨姷雼堧嫟. 頃措嫻 Form鞐愲姅 臧�欷� 韽夑窢 臧�瓴� $65.60鞐� 10,200欤�, $65.94鞐� 2,641欤�, $66.09鞐� 12,841欤检潣 毵り皝鞚� 旮办灛霅橃柎 鞛堨溂氅�, 臧�瓴� 氩旍渼電� 臧侅＜鞐� 瓿店皽霅橃柎 鞛堨姷雼堧嫟.

靹滊電� EN Holdings LLC鞕� 甏�霠悳 瓯半灅 頉� 鞁れ鞝� 氤挫湢 歆�攵勳潉 臧� 頃鞐� 雽�頃� 671,068欤�, 668,427欤�, 655,586欤茧 氤搓碃頃橁碃, 氤勲弰搿� 須岇偓 瓿勴殟鞐� 霐半澕 攵�鞐悳 頇曥爼 氚� 氙疙檿鞝� 鞝滍暅欤检嫕雼渼鞐� 攴�靻嶋悩電� 427,812欤茧ゼ 氇呾嫓頃╇媹雼�. 鞚� 氍胳劀電� 2025-08-12鞐� 甓岉暅 鞛堧姅 靹滊獏鞛愱皜 靹滊獏頄堨姷雼堧嫟.

Earl H. Nemser, vice-pr茅sident et administrateur d'Interactive Brokers Group, Inc. (IBKR), a d茅clar茅 plusieurs cessions d'actions ordinaires de cat茅gorie A dans ce Form 4. Le d茅p么t indique des ventes effectu茅es les 08/08/2025 et 11/08/2025 par EN Holdings LLC, une entit茅 d茅tenue par la personne d茅clarante et ses affili茅s. Le formulaire recense des ventes de 10 200 actions au prix moyen pond茅r茅 de $65,60, 2 641 actions 脿 $65,94 et 12 841 actions 脿 $66,09, les fourchettes de prix 茅tant pr茅cis茅es en notes de bas de page.

Le d茅p么t fait 茅tat des d茅tentions b茅n茅ficiaires post-op茅ration associ茅es 脿 EN Holdings LLC, soit respectivement 671 068, 668 427 et 655 586 actions sur les lignes correspondantes, et indique s茅par茅ment 427 812 actions attribuables 脿 des unit茅s d'actions restreintes acquises et non acquises attribu茅es dans le cadre du plan de la soci茅t茅. Le formulaire est sign茅 par un signataire autoris茅 le 08/12/2025.

Earl H. Nemser, stellvertretender Vorsitzender und Direktor von Interactive Brokers Group, Inc. (IBKR), meldete in diesem Form 4 mehrere Verk盲ufe von Inhaberaktien der Klasse A. Die Einreichung weist Verk盲ufe am 08.08.2025 und 11.08.2025 durch EN Holdings LLC aus, eine Gesellschaft, die dem Berichtserstatter und seinen verbundenen Unternehmen geh枚rt. Das Formular f眉hrt Verk盲ufe von 10.200 Aktien zu einem gewichteten Durchschnittspreis von $65,60, 2.641 Aktien zu $65,94 und 12.841 Aktien zu $66,09 auf; Preisbereiche sind in Fu脽noten angegeben.

Die Einreichung berichtet nach der Transaktion geltende wirtschaftliche Eigentumsangaben f眉r EN Holdings LLC in H枚he von 671.068, 668.427 und 655.586 Aktien auf den jeweiligen Zeilen und weist getrennt 427.812 Aktien aus, die auf unternehmensplanvergebene, bereits ausgestandene und noch nicht ausgestandene Restricted Stock Units entfallen. Das Formular ist am 08.12.2025 von einem bevollm盲chtigten Unterzeichner unterzeichnet.

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).
X
 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)
08/08/2025
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 08/08/2025 S 10,200 D $65.6(2) 671,068(1) I by EN Holdings LLC
Class A common stock 08/08/2025 S 2,641 D $65.94(3) 668,427(1) I by EN Holdings LLC
Class A common stock 08/11/2025 S 12,841 D $66.09(4) 655,586(1) I by EN Holdings LLC
Class A common stock 427,812(5) 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 owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.
2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.90 to $65.89. 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) - (4) 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 $65.90 to $66.00.
4. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.63 to $66.42.
5. 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 Earl H. Nemser 08/12/2025
** 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.

Source:

FAQ

What did the IBKR Form 4 filed by Earl H. Nemser report?

The Form 4 reports multiple sales by EN Holdings LLC beneficially owned by Earl H. Nemser totaling 25,682 Class A shares on 08/08/2025 and 08/11/2025.

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

The filing shows weighted-average prices of $65.60, $65.94, and $66.09, with component trade price ranges disclosed in footnotes.

How is ownership held according to the Form 4 for IBKR insider Nemser?

The securities are reported as indirectly owned by EN Holdings LLC, which the filing states is owned by the reporting person and his affiliates.

Does the Form 4 disclose restricted stock units for IBKR?

Yes. The filing notes 427,812 Class A shares attributable to vested and unvested restricted stock units awarded under the company plan.

When was the Form 4 signed and filed?

The Form 4 bears an authorized signatory signature dated 08/12/2025.
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