X0202 4 2008-05-07 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 2008-05-08 5 G 0 34000 0 D 27675599 D Common Stock 2008-05-07 4 S 0 100 76.56 D 27675499 D Common Stock 2008-05-07 4 S 0 100 76.23 D 27675399 D Common Stock 2008-05-07 4 S 0 100 76.37 D 27675299 D Common Stock 2008-05-07 4 S 0 107 76.45 D 27675192 D Common Stock 2008-05-07 4 S 0 193 76.44 D 27674999 D Common Stock 2008-05-07 4 S 0 100 76.73 D 27674899 D Common Stock 2008-05-07 4 S 0 100 76.52 D 27674799 D Common Stock 2008-05-07 4 S 0 100 76.41 D 27674699 D Common Stock 2008-05-07 4 S 0 100 76.60 D 27674599 D Common Stock 2008-05-07 4 S 0 100 76.38 D 27674499 D Common Stock 2008-05-07 4 S 0 100 76.50 D 27674399 D Common Stock 2008-05-07 4 S 0 100 76.57 D 27674299 D Common Stock 2008-05-07 4 S 0 100 76.55 D 27674199 D Common Stock 2008-05-07 4 S 0 100 76.05 D 27674099 D Common Stock 2008-05-07 4 S 0 100 75.96 D 27673999 D Common Stock 2008-05-07 4 S 0 100 76.00 D 27673899 D Common Stock 2008-05-07 4 S 0 56 76.51 D 27673843 D Common Stock 2008-05-07 4 S 0 44 76.49 D 27673799 D Common Stock 2008-05-07 4 S 0 100 76.46 D 27673699 D Common Stock 2008-05-07 4 S 0 96 76.19 D 27673603 D Common Stock 2008-05-07 4 S 0 4 76.14 D 27673599 D Common Stock 2008-05-07 4 S 0 100 76.46 D 27673499 D Common Stock 2008-05-07 4 S 0 100 75.49 D 27673399 D Common Stock 2008-05-07 4 S 0 100 75.64 D 27673299 D Common Stock 2008-05-07 4 S 0 100 75.81 D 27673199 D Common Stock 2008-05-07 4 S 0 100 76.09 D 27673099 D Common Stock 2008-05-07 4 S 0 100 75.75 D 27672999 D Common Stock 2008-05-07 4 S 0 100 75.69 D 27672899 D Common Stock 2008-05-07 4 S 0 100 75.87 D 27672699 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 2008-05-08