On January 20, 2016, Interactive Brokers Group, Inc.'s Board of Directors elected Mr. Denis Mendonca to serve as the Companys 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 from December 2000 to September 2014.

Prior to joining UBS, Mr. Mendonca worked for five years as an auditor for PricewaterhouseCoopers.