 MCKINNEY, Texas--BUSINESS WIRE--Independent Bank Group, Inc. NASDAQ: IBTX Independent Bank Group or the Company, the parent company of Independent Bank the Bank, today announced changes to its executive leadership to position the Company for long-term success and to best serve its customers, communities and shareholders. David R. Brooks will remain Chairman and Chief Executive Officer and will continue to serve as the Companys and the Banks principal executive officer, but he wi 