Earl H. Nemser - Jul 31, 2025 Form 4 Insider Report for Interactive Brokers Group, Inc. (IBKR)

Role
Vice Chairman, Director
Signature
/s/ Raymond Bussiere as authorized signatory for Earl H. Nemser
Stock symbol
IBKR
Transactions as of
Jul 31, 2025
Transactions value $
-$1,793,965
Form type
4
Date filed
8/4/2025, 04:02 PM
Previous filing
Aug 1, 2025
Next filing
Aug 6, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Nemser Earl H Vice Chairman, Director ONE PICKWICK PLAZA, GREENWICH /s/ Raymond Bussiere as authorized signatory for Earl H. Nemser 2025-08-04 0001391400

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction IBKR Class A common stock Sale -$823K -12.4K -1.64% $66.18 748K Jul 31, 2025 by EN Holdings LLC F1, F2
transaction IBKR Class A common stock Sale -$147K -2.2K -0.29% $66.71 745K Jul 31, 2025 by EN Holdings LLC F1, F3
transaction IBKR Class A common stock Sale -$75.3K -1.2K -0.16% $62.79 744K Aug 1, 2025 by EN Holdings LLC F1, F4
transaction IBKR Class A common stock Sale -$476K -7.44K -1% $63.94 737K Aug 1, 2025 by EN Holdings LLC F1, F5
transaction IBKR Class A common stock Sale -$207K -3.2K -0.43% $64.71 734K Aug 1, 2025 by EN Holdings LLC F1, F6
transaction IBKR Class A common stock Sale -$65.7K -1K -0.14% $65.66 733K Aug 1, 2025 by EN Holdings LLC F1, F7
holding IBKR Class A common stock 428K Jul 31, 2025 Direct F8
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 Represents number of securities owned by EN Holdings LLC, which is owned by the reporting person and his affiliates.
F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.64 to $66.63. 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) - (7) to this Form 4.
F3 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.64 to $66.72.
F4 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $62.35 to $63.34.
F5 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $63.35 to $64.34.
F6 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $64.35 to $65.34.
F7 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $65.35 to $65.79.
F8 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.