Stewart County Board of Education Authorized Investment Providers For specific investment provider information, please click on the investment provider name of your choice to visit the company's website. 403(b) Horace Mann Insurance Company(800) 999-1030 National Life Group(800) 579-2878 Roth 403(b) Horace Mann Insurance Company(800) 999-1030 National Life Group(800) 579-2878