| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Brody Paul Jonathan | Chief Financial Officer, Director | ONE PICKWICK PLAZA, GREENWICH | /s/ Raymond Bussiere as authorized signatory for Paul J. Brody | 03 Oct 2025 | 0001391403 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | IBKR | Class A common stock | Sale | -$448K | -6.93K | -6.39% | $64.66 | 101K | 19 Sep 2025 | by PJB Holdings LLC | F1, F2 |
| holding | IBKR | Class A common stock | 2.89M | 19 Sep 2025 | Direct | F3 |
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).
| Id | Content |
|---|---|
| F1 | 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. |
| F2 | 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. |
| F3 | 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. |
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.