United School District 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) Ameriprise Financial(800) 862-7919 Horace Mann Insurance Company(800) 999-1030 Kades-Margolis Corp.(800) 433-1828 Lincoln Investment Planning, LLC(800) 242-1421 Security Benefit Group(800) 888-2461 Roth 403(b) Horace Mann Insurance Company(800) 999-1030 Kades-Margolis Corp.(800) 433-1828 Lincoln Investment Planning, LLC(800) 242-1421 Security Benefit Group(800) 888-2461