X0202 4 2008-04-29 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 2008-04-29 4 S 0 3 58.15 D 27740096 D Common Stock 2008-04-29 4 S 0 99 58.18 D 27739997 D Common Stock 2008-04-29 4 S 0 197 58.15 D 27739800 D Common Stock 2008-04-29 4 S 0 200 58.12 D 27739600 D Common Stock 2008-04-29 4 S 0 100 58.04 D 27739500 D Common Stock 2008-04-29 4 S 0 200 58.06 D 27739300 D Common Stock 2008-04-29 4 S 0 100 58.08 D 27739200 D Common Stock 2008-04-29 4 S 0 100 57.91 D 27739100 D Common Stock 2008-04-29 4 S 0 300 57.90 D 27738800 D Common Stock 2008-04-29 4 S 0 100 57.80 D 27738700 D Common Stock 2008-04-29 4 S 0 200 57.77 D 27738500 D Common Stock 2008-04-29 4 S 0 300 57.76 D 27738200 D Common Stock 2008-04-29 4 S 0 200 57.83 D 27738000 D Common Stock 2008-04-29 4 S 0 200 57.89 D 27737800 D Common Stock 2008-04-29 4 S 0 100 57.74 D 27737700 D Common Stock 2008-04-29 4 S 0 500 57.78 D 27737200 D Common Stock 2008-04-29 4 S 0 200 57.87 D 27737000 D Common Stock 2008-04-29 4 S 0 200 57.88 D 27736800 D Common Stock 2008-04-29 4 S 0 35 57.75 D 27736765 D Common Stock 2008-04-29 4 S 0 165 57.72 D 27736600 D Common Stock 2008-04-29 4 S 0 1102 57.68 D 27735498 D Common Stock 2008-04-29 4 S 0 400 57.70 D 27735098 D Common Stock 2008-04-29 4 S 0 400 57.69 D 27734698 D Common Stock 2008-04-29 4 S 0 200 57.73 D 27734498 D Common Stock 2008-04-29 4 S 0 100 57.705 D 27734398 D Common Stock 2008-04-29 4 S 0 100 57.71 D 27734298 D Common Stock 2008-04-29 4 S 0 100 57.85 D 27734198 D Common Stock 2008-04-29 4 S 0 100 58.03 D 27734098 D Common Stock 2008-04-29 4 S 0 100 58.01 D 27733998 D Common Stock 2008-04-29 4 S 0 200 57.93 D 27733798 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. Form 1 of 3 /s/ Heidi Miller, by power of attorney 2008-05-01