X0202 4 2008-04-28 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 2008-04-28 4 S 0 100 57.97 D 27747999 D Common Stock 2008-04-28 4 S 0 100 58.35 D 27747899 D Common Stock 2008-04-28 4 S 0 200 57.93 D 27747699 D Common Stock 2008-04-28 4 S 0 100 57.99 D 27747599 D Common Stock 2008-04-28 4 S 0 300 57.91 D 27747299 D Common Stock 2008-04-28 4 S 0 100 57.84 D 27747199 D Common Stock 2008-04-28 4 S 0 210 57.65 D 27746989 D Common Stock 2008-04-28 4 S 0 400 57.69 D 27746589 D Common Stock 2008-04-28 4 S 0 100 58.11 D 27746489 D Common Stock 2008-04-28 4 S 0 54 57.87 D 27746435 D Common Stock 2008-04-28 4 S 0 146 57.83 D 27746289 D Common Stock 2008-04-28 4 S 0 200 57.66 D 27746089 D Common Stock 2008-04-28 4 S 0 300 57.71 D 27745789 D Common Stock 2008-04-28 4 S 0 452 57.79 D 27745337 D Common Stock 2008-04-28 4 S 0 548 57.78 D 27744789 D Common Stock 2008-04-28 4 S 0 278 57.75 D 27744511 D Common Stock 2008-04-28 4 S 0 200 57.70 D 27744311 D Common Stock 2008-04-28 4 S 0 100 57.72 D 27744211 D Common Stock 2008-04-28 4 S 0 100 57.81 D 27744111 D Common Stock 2008-04-28 4 S 0 100 57.90 D 27744011 D Common Stock 2008-04-28 4 S 0 100 57.89 D 27743911 D Common Stock 2008-04-28 4 S 0 200 57.88 D 27743711 D Common Stock 2008-04-28 4 S 0 122 57.76 D 27743589 D Common Stock 2008-04-28 4 S 0 404 57.67 D 27743185 D Common Stock 2008-04-28 4 S 0 100 57.68 D 27743085 D Common Stock 2008-04-28 4 S 0 100 57.77 D 27742985 D Common Stock 2008-04-28 4 S 0 200 57.74 D 27742785 D Common Stock 2008-04-28 4 S 0 100 57.73 D 27742685 D Common Stock 2008-04-28 4 S 0 100 58.21 D 27742585 D Common Stock 2008-04-28 4 S 0 100 57.95 D 27742485 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 2 /s/ Heidi Miller, by power of attorney 2008-04-30