Jill Bright's Acquisition of Interactive Brokers Group, Inc. Class A Common Stock

On October 23, 2025, Jill Bright, a director of Interactive Brokers Group, Inc., acquired 400 shares of Class A common stock at a price of $65.95 per share. Following this transaction, Jill Bright's total ownership in the company increased to 10,304 shares. This amount includes securities acquired by the reporting person, vested restricted stock units awarded under the 2007 Stock Incentive Plan, and unvested restricted stock units awarded under the same plan. Additionally, on June 17, 2025, the company effected a four-for-one split of its common stock, resulting in Jill Bright's ownership of 7,428 additional shares of common stock.