Lawrence E. Harris Sells Shares of Interactive Brokers Group, Inc.

Lawrence E. Harris, a director of Interactive Brokers Group, Inc., sold a total of 30,000 shares of Class A common stock on October 23 and 24, 2025. On October 23, he sold 22,000 shares at a weighted average price of $67.63, and on October 24, he sold 8,000 shares at a weighted average price of $68.50. Following these transactions, Harris's total holdings in the company decreased to 223,704 shares. The sales were conducted in multiple transactions within specified price ranges. This filing also notes a four-for-one stock split that occurred on June 17, 2025, which increased Harris's holdings by 190,278 shares.