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 73.90 D 27641354 D Common Stock 2008-05-19 4 S 0 200 73.89 D 27641154 D Common Stock 2008-05-19 4 S 0 100 73.92 D 27641054 D Common Stock 2008-05-19 4 S 0 100 73.56 D 27640954 D Common Stock 2008-05-19 4 S 0 100 73.57 D 27640854 D Common Stock 2008-05-19 4 S 0 100 73.44 D 27640754 D Common Stock 2008-05-19 4 S 0 200 73.49 D 27640554 D Common Stock 2008-05-19 4 S 0 131 73.47 D 27640423 D Common Stock 2008-05-19 4 S 0 100 73.43 D 27640323 D Common Stock 2008-05-19 4 S 0 369 73.50 D 27639954 D Common Stock 2008-05-19 4 S 0 407 73.30 D 27639547 D Common Stock 2008-05-19 4 S 0 6 73.40 D 27639541 D Common Stock 2008-05-19 4 S 0 194 73.41 D 27639347 D Common Stock 2008-05-19 4 S 0 100 73.35 D 27639247 D Common Stock 2008-05-19 4 S 0 100 73.59 D 27639147 D Common Stock 2008-05-19 4 S 0 300 73.31 D 27638847 D Common Stock 2008-05-19 4 S 0 100 73.33 D 27638747 D Common Stock 2008-05-19 4 S 0 355 73.75 D 27638392 D Common Stock 2008-05-19 4 S 0 200 73.76 D 27638192 D Common Stock 2008-05-19 4 S 0 100 73.80 D 27638092 D Common Stock 2008-05-19 4 S 0 100 74.30 D 27637992 D Common Stock 2008-05-19 4 S 0 100 74.44 D 27637892 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 2 of 2 /s/ Heidi Miller, by power of attorney 2008-05-21