X0202 4 2008-04-07 0001289419 Morningstar, Inc. MORN 0001324069 Mansueto Joseph D C/O MORNINGSTAR, INC. 225 WEST WACKER DRIVE CHICAGO IL 60606 1 1 0 0 Chairman & CEO Common Stock 2008-04-07 4 S 0 150 64.95 D 27779685 D Common Stock 2008-04-07 4 S 0 25 64.96 D 27779660 D Common Stock 2008-04-07 4 S 0 100 64.94 D 27779560 D Common Stock 2008-04-07 4 S 0 100 64.93 D 27779460 D Common Stock 2008-04-07 4 S 0 200 64.92 D 27779260 D Common Stock 2008-04-07 4 S 0 484 64.90 D 27778776 D Common Stock 2008-04-07 4 S 0 600 64.89 D 27778176 D Common Stock 2008-04-07 4 S 0 1250 64.88 D 27776926 D Common Stock 2008-04-07 4 S 0 100 64.91 D 27776826 D Common Stock 2008-04-07 4 S 0 600 65.19 D 27776726 D Common Stock 2008-04-07 4 S 0 600 64.89 D 27776126 D Common Stock 2008-04-07 4 S 0 1 65.02 D 27776125 D Common Stock 2008-04-07 4 S 0 100 65.35 D 27776025 D Common Stock 2008-04-07 4 S 0 100 65.21 D 27775925 D Common Stock 2008-04-07 4 S 0 99 65.02 D 27775826 D Common Stock 2008-04-07 4 S 0 100 65.20 D 27775726 D Common Stock 2008-04-07 4 S 0 100 64.99 D 27775626 D Common Stock 2008-04-07 4 S 0 25 64.98 D 27775601 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2007. /s/ Heidi Miller, by power of attorney 2008-04-09