Happy ISD 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 Invesco OppenheimerFunds(800) 959-4246 Midland National Life(877) 586-0240 Modern Woodmen of America(800) 447-9811 National Life Group(800) 579-2878 PlanMember Services(800) 874-6910 Security Benefit Group(800) 888-2461