Interactive Brokers (IBKR) Form 144 — 400K Shares Sold for $26.46M

Rhea-AI Filing Summary

Interactive Brokers Group, Inc. (IBKR) Form 144 reports a proposed sale of 400,000 Class A common shares through Interactive Brokers LLC. The filing states the shares were acquired on 07/25/2024 in an in-kind redemption from IBG Holdings LLC and lists an aggregate market value of $24,716,000 (approx.) with 445,246,976 shares outstanding.

The filing shows a sale recorded on 07/28/2025 by Earl H Nemser of 400,000 shares for gross proceeds of $26,459,403. The filer represents no undisclosed material adverse information and the broker is Interactive Brokers LLC.

Insights

Securities Analyst

TL;DR: Insider sale of 400,000 IBKR shares is small relative to outstanding stock and appears procedural.

The filing documents a single insider sale of 400,000 Class A shares executed through Interactive Brokers LLC, representing roughly 0.09% of shares outstanding (400,000 of 445,246,976). Acquisition was an in-kind redemption from IBG Holdings LLC on 07/25/2024 and the sale reported 07/28/2025 produced gross proceeds of $26,459,403. From a market-impact perspective, this transaction size is immaterial to equity supply. There is no indication of accelerated selling or multiple aggregated dispositions in the three-month lookback beyond the reported transaction.

Corporate Governance Expert

TL;DR: Disclosure follows Rule 144 format; signer affirms no undisclosed material nonpublic information.

The notice meets Rule 144 disclosure elements: identity of seller (Earl H Nemser), broker, acquisition details (in-kind redemption from IBG Holdings LLC), dates, and proceeds. The filer attests to lack of material nonpublic information and cites Rule 10b5-1 notice language where applicable. There are no governance red flags or indications of insider trading policy breaches within the filing's explicit content.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Class A common stock	Interactive Brokers LLC One Pickwick Plaza Greenwich CT 06830	400000	24716000	445246976	07/26/2025	Nasdaq

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Class A common stock	07/25/2024	Redemption Transaction	IBG Holdings LLC			400000	07/25/2024	In-Kind Redemption

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Earl H Nemser 1 Pickwik Plaza Greenwich CT 06830	Class A common stock	07/28/2025	400000	26459403

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

Who is selling IBKR shares according to this Form 144?

The seller is listed as Earl H Nemser for account sale of Class A common stock.

How many IBKR shares are proposed to be sold and when?

The filing shows 400,000 Class A shares with an approximate date of sale of 07/26/2025 and a reported sale on 07/28/2025.

What were the acquisition details for the shares being sold?

The shares were acquired on 07/25/2024 via an in-kind redemption from IBG Holdings LLC, amounting to 400,000 shares.

What proceeds were reported from the sale?

The filing reports gross proceeds of $26,459,403 for the 400,000 shares sold on 07/28/2025.

Which broker was used for the transaction?

The broker named in the Form 144 is Interactive Brokers LLC, located in Greenwich, CT.