X0202 4 2008-05-19 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 2008-05-19 4 S 0 100 74.03 D 27644499 D Common Stock 2008-05-19 4 S 0 100 73.93 D 27644399 D Common Stock 2008-05-19 4 S 0 100 73.97 D 27644299 D Common Stock 2008-05-19 4 S 0 100 73.92 D 27644199 D Common Stock 2008-05-19 4 S 0 100 73.58 D 27644099 D Common Stock 2008-05-19 4 S 0 54 73.39 D 27644045 D Common Stock 2008-05-19 4 S 0 23 73.40 D 27644022 D Common Stock 2008-05-19 4 S 0 123 73.43 D 27643899 D Common Stock 2008-05-19 4 S 0 100 73.58 D 27643799 D Common Stock 2008-05-19 4 S 0 100 73.78 D 27643699 D Common Stock 2008-05-19 4 S 0 100 73.53 D 27643599 D Common Stock 2008-05-19 4 S 0 100 73.69 D 27643499 D Common Stock 2008-05-19 4 S 0 100 74.06 D 27643399 D Common Stock 2008-05-19 4 S 0 100 73.93 D 27643299 D Common Stock 2008-05-19 4 S 0 100 73.99 D 27643199 D Common Stock 2008-05-19 4 S 0 100 73.85 D 27643099 D Common Stock 2008-05-19 4 S 0 200 73.94 D 27642899 D Common Stock 2008-05-19 4 S 0 100 73.67 D 27642799 D Common Stock 2008-05-19 4 S 0 100 73.66 D 27642699 D Common Stock 2008-05-19 4 S 0 100 73.84 D 27642599 D Common Stock 2008-05-19 4 S 0 100 73.77 D 27642499 D Common Stock 2008-05-19 4 S 0 45 73.71 D 27642454 D Common Stock 2008-05-19 4 S 0 39 73.82 D 27642415 D Common Stock 2008-05-19 4 S 0 161 73.83 D 27642254 D Common Stock 2008-05-19 4 S 0 200 73.87 D 27642054 D Common Stock 2008-05-19 4 S 0 100 74.05 D 27641954 D Common Stock 2008-05-19 4 S 0 85 74.10 D 27641869 D Common Stock 2008-05-19 4 S 0 115 74.11 D 27641754 D Common Stock 2008-05-19 4 S 0 100 74.09 D 27641654 D Common Stock 2008-05-19 4 S 0 200 74.03 D 27641454 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 2008-05-21