X0202 4 2008-05-02 0001289419 Morningstar, Inc. MORN 0001324003 Huang Tao C/O MORNINGSTAR, INC. 225 WEST WACKER DRIVE CHICAGO IL 60606 0 1 0 0 Chief Operating Officer Common Stock 2008-05-05 4 S 0 99 71.09 D 178557 D Common Stock 2008-05-05 4 S 0 98 71.17 D 178459 D Common Stock 2008-05-05 4 S 0 100 71.36 D 178359 D Common Stock 2008-05-05 4 S 0 100 71.63 D 178259 D Common Stock 2008-05-05 4 S 0 100 71.88 D 178159 D Common Stock 2008-05-05 4 S 0 100 71.89 D 178059 D Common Stock 2008-05-05 4 S 0 100 71.96 D 177959 D Common Stock 2008-05-05 4 S 0 100 71.99 D 177859 D Common Stock 2008-05-05 4 S 0 1 72.14 D 177858 D Common Stock 2008-05-05 4 S 0 99 72.16 D 177759 D Common Stock 2008-05-05 4 S 0 100 72.32 D 177659 D Common Stock 2008-05-05 4 S 0 100 72.46 D 177559 D Common Stock 2008-05-05 4 S 0 200 72.48 D 177359 D Common Stock 2008-05-05 4 S 0 100 72.49 D 177259 D Common Stock 2008-05-05 4 S 0 100 72.51 D 177159 D Common Stock 2008-05-05 4 S 0 100 72.64 D 177059 D Common Stock 2008-05-05 4 S 0 100 72.70 D 176959 D Common Stock 2008-05-05 4 S 0 400 72.75 D 176559 D Common Stock 2008-05-05 4 S 0 100 72.95 D 176459 D Common Stock 2008-05-05 4 S 0 100 72.98 D 176359 D Common Stock 2008-05-05 4 S 0 400 73.05 D 175959 D Common Stock 2008-05-05 4 S 0 200 73.09 D 175759 D Common Stock 2008-05-05 4 S 0 100 73.11 D 175659 D Common Stock 2008-05-05 4 S 0 700 75.00 D 174959 D Common Stock 2008-05-05 4 S 0 200 75.01 D 174759 D Common Stock 2008-05-05 4 S 0 200 75.05 D 174559 D Common Stock 2008-05-05 4 S 0 100 75.06 D 174459 D Common Stock 2008-05-05 4 S 0 200 75.08 D 174259 D Common Stock 2008-05-05 4 S 0 100 75.09 D 174159 D Common Stock 2008-05-05 4 S 0 200 75.10 D 173959 D The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on February 26, 2008. Form 3 of 4 /s/ Heidi Miller, by power of attorney 2008-05-06