X0202 4 2008-04-29 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 2008-04-29 4 S 0 100 57.95 D 27733698 D Common Stock 2008-04-29 4 S 0 100 57.96 D 27733598 D Common Stock 2008-04-29 4 S 0 100 58.29 D 27733498 D Common Stock 2008-04-29 4 S 0 100 58.26 D 27733398 D Common Stock 2008-04-29 4 S 0 2 58.50 D 27733396 D Common Stock 2008-04-29 4 S 0 98 58.41 D 27733298 D Common Stock 2008-04-29 4 S 0 100 57.88 D 27733198 D Common Stock 2008-04-29 4 S 0 200 57.92 D 27732998 D Common Stock 2008-04-29 4 S 0 100 57.71 D 27732898 D Common Stock 2008-04-29 4 S 0 98 57.70 D 27732800 D Common Stock 2008-04-29 4 S 0 200 57.69 D 27732600 D Common Stock 2008-04-29 4 S 0 200 57.73 D 27732400 D Common Stock 2008-04-29 4 S 0 100 57.74 D 27732300 D Common Stock 2008-04-29 4 S 0 100 57.98 D 27732200 D Common Stock 2008-04-29 4 S 0 100 58.18 D 27732100 D Common Stock 2008-04-29 4 S 0 1 58.18 D 27732099 D Common Stock 2008-04-30 4 S 0 100 58.64 D 27731999 D Common Stock 2008-04-30 4 S 0 100 58.66 D 27731899 D Common Stock 2008-04-30 4 S 0 100 58.68 D 27731799 D Common Stock 2008-04-30 4 S 0 300 58.56 D 27731499 D Common Stock 2008-04-30 4 S 0 100 58.59 D 27731399 D Common Stock 2008-04-30 4 S 0 100 58.61 D 27731299 D Common Stock 2008-04-30 4 S 0 144 58.55 D 27731155 D Common Stock 2008-04-30 4 S 0 156 58.50 D 27730999 D Common Stock 2008-04-30 4 S 0 300 58.28 D 27730699 D Common Stock 2008-04-30 4 S 0 200 58.58 D 27730499 D Common Stock 2008-04-30 4 S 0 100 58.49 D 27730399 D Common Stock 2008-04-30 4 S 0 200 58.34 D 27730199 D Common Stock 2008-04-30 4 S 0 100 58.35 D 27730099 D Common Stock 2008-04-30 4 S 0 300 58.36 D 27729799 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 3 /s/ Heidi Miller, by power of attorney 2008-05-01