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Mr. Brody, age 65, has been our Chief Financial Officer, Treasurer and Secretary since November 2006. Mr. Brody joined the Company in 1987 and has served as Chief Financial Officer of IBG LLC since December 2003. Mr. Brody serves as a director and/or officer for various of our subsidiaries. From 2005 to 2012, Mr. Brody served as a director, and for a portion of the time as member Vice Chairman, of The Options Clearing Corporation, of which Interactive Brokers LLC and IBKR Securities Services LLC are members. Mr. Brody also served as a director of Quadriserv Inc., an electronic securities lending platform provider, from 2009 to 2015. Mr. Brody received a Bachelor of Arts degree in economics from Cornell University in 1982.

Mr. Nemser, age 79, has been our Vice Chairman since November 2006. Mr. Nemser has been the Vice Chairman of IBG LLC and its predecessors since 1988 and serves as a director and/or officer for various subsidiaries of IBG LLC. Mr. Nemser serves as an Independent Advisor to the law firm Dechert LLP. Mr. Nemser served as Special Counsel to Dechert LLP from January 2005 to October 2018. Prior to such time, Mr. Nemser served as Partner at the law firms of Swidler Berlin Shereff Friedman, LLP from 1995 to December 2004 and Cadwalader, Wickersham & Taft LLP prior to 1995. Mr. Nemser received a Bachelor of Arts degree in economics from New York University in 1967 and a Juris Doctor, magna cum laude, from Boston University School of Law in 1970.

Dr. Frank joined us in 1985 and has served since July 1999 as Executive Vice President of Interactive Brokers LLC. Dr. Frank served as Interactive Brokers LLC's Chief Information Officer from July 1999 to April 2024. In addition, Dr. Frank has served as Vice President of IBKR Securities Services LLC since December 1990. Dr. Frank has served as a director of The Options Clearing Corporation, since 2015. Dr. Frank received a Ph.D. in physics from the Massachusetts Institute of Technology in 1985.

Mr. Peterffy, age 81, our founder, has been the Chairman of our Board since November 2006 and Chief Executive Officer from November 2006 to September 2019. Mr. Peterffy has been at the forefront of applying computer technology to automate trading and brokerage functions since he emigrated from Hungary to the United States in 1965. In 1977, after purchasing a seat on the American Stock Exchange and trading as an individual market maker in equity options, Mr. Peterffy was among the first to apply a computerized mathematical model to continuously value equity option prices. By 1986, Mr. Peterffy developed and employed a fully integrated, automated market making system for stocks, options and futures. As this pioneering system extended around the globe, online brokerage functions were added and, in 1993, Interactive Brokers was formed. Since transferring the duties of Chief Executive Officer to Milan Galik in September 2019, Mr. Peterffy remains active in matters of business strategy, risk management, sales and marketing, and as Chairman of the Compensation Committee and as a member of the IBG LLC Steering Committee (see page 9 for a description of the IBG LLC Steering Committee's function).

Dr. Harris, age 69, Chairman of the Audit Committee and lead independent director, is the Fred V. Keenan Chair Emeritus in Finance at the University of Southern California Marshall School of Business. Dr. Harris also serves as trustee of the Davis Fundamental ETF Trust, and as the research coordinator of the Institute for Quantitative Research in Finance. Dr. Harris formerly served as Chief Economist of the U.S. Securities and Exchange Commission. Dr. Harris earned his Ph.D. in Economics from the University of Chicago and is a CFA charterholder. Dr. Harris is an expert in the economics of securities market microstructure. Dr. Harris has written extensively about trading rules, transaction costs, index markets, and market regulation. Dr. Harris is also the author of the widely respected textbook Trading and Exchanges: Market Microstructure for Practitioners.

Ms. Conkling, age 54, has over 25 years of experience in business-to-business and consumer media. She is the Head of TV and Film Licensing at Netflix, one of the world's leading entertainment services. Ms. Conkling recently served as the Global Head of TV, Film and Sports, YouTube and YouTube TV for Google, where she was also a member of YouTube's GenAI Advisory Committee. Ms. Conkling previously led strategic development for NBC Universal's corporate Digital Enterprises team, focusing on growing brands via digital channels and social media platforms. Ms. Conkling is currently on the Board of Visitors for the Fuqua School of Business at Duke University, where Ms. Conkling completed her MBA. Ms. Conkling's expertise with AI and in driving brand growth strengthens the Board's collective knowledge, capabilities, and experience.

Ms. Bright, age 63, has over three decades of experience in human resources management and administration. Ms. Bright is an operating executive at Crestview Partners focused on human capital management and also serves as Chief Transformation Officer for one of their portfolio companies. Ms. Bright has served as Chief Administrative Officer for LionTree LLC as well as for Conde Nast, led Human Resources & Administration for Sotheby's and spent over five years in Human Resources at American Express. Ms. Bright is currently a Board Director and Chair of the Human Resource Committee for Pursuit (PRSU) and previously served as a Board Director and Chair of the Compensation Committee for WideOpenWest (WOW). Ms. Bright completed her MBA at New York University's Stern School of Business. Ms. Bright possesses expertise in human capital management and organizational effectiveness that strengthens the Board's collective knowledge, capabilities and experience.

Mr. Repetto, age 67, is a renowned research analyst with over 25 years of experience covering electronic trading and financial technology companies. Mr. Repetto retired in June 2023 as Managing Director and Senior Research Analyst at Piper Sandler. Mr. Repetto is currently employed at Cornerstone Financial Technology Management, a hedge fund focused on using advanced technology in the investment decision making process for financial technology stocks. Throughout his successful career, Mr. Repetto received many accolades, including the Financial Times/StarMine Global Analyst of the Year from the Financial Times in 2012. Mr. Repetto is also a board member and is on the audit committee of Tradeweb Markets, Inc. Mr. Repetto possesses particular knowledge of the electronic trading and financial technology industry and experience in a variety of areas that strengthens the Board's collective knowledge, capabilities and experience.

Mr. William Peterffy, age 36, is the Chair of the Investment Committee of the Peterffy Foundation where he oversees its investment portfolio. Mr. William Peterffy joined the Company's Board as an observer in 2019. Mr. William Peterffy is also a member of the Board of Trustees of the Collective Heritage Institute (commonly known as Bioneers) and focuses his efforts on sustainability issues. Mr. William Peterffy is the Chief Executive Officer and founder of One Small Planet. Mr. William Peterffy also worked as an investment analyst within the hedge fund industry.

Ms. Yuen, age 63, has had a long-standing career in investment banking in Asia for over two decades and is widely credited for her pioneering efforts in internationalizing China's capital market. Ms. Yuen was formerly Managing Director, Head of Equities, North Asia and Vice Chairman, Greater China for Credit Suisse from 2012 to 2018. Before joining Credit Suisse, Ms. Yuen worked at UBS for 18 years and was formerly a Managing Director, holding various leadership positions, across investment banking and securities divisions in Asia. Ms. Yuen also served as a member of the Listing Committee of the China Securities Regulatory Commission. Prior to investment banking, Ms. Yuen was a partner at Clifford Chance, Hong Kong, after having worked as a lawyer in the United Kingdom, the U.S. and The Netherlands. Ms. Yuen now also sits on the board of Invesco Asia Dragon Trust plc as an independent non-executive director.

On January 20, 2016, Interactive Brokers Group, Inc.'s Board of Directors elected Mr. Denis Mendonca to serve as the Company's Chief Accounting Officer. Mr. Mendonca has been the Group Controller of IBG LLC since September 2014. Prior to joining the Company, Mr. Mendonca served as Executive Director - Head of U.S. Financial Reporting for UBS, a global financial services company, from December 2000 to September 2014. Prior to joining UBS, Mr. Mendonca worked for five years as an auditor for PricewaterhouseCoopers. Mr. Mendonca is a Certified Public Accountant licensed with the Massachusetts Board of Public Accountancy, and has a Bachelor's degree in Accounting from the Paulista University (Brazil) and a Bachelor's degree in Business Administration from the Mackenzie University (Brazil).