X0202 4 2008-04-23 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 2008-04-23 4 S 0 100 54.67 D 27755999 D Common Stock 2008-04-23 4 S 0 100 54.73 D 27755899 D Common Stock 2008-04-23 4 S 0 100 54.75 D 27755799 D Common Stock 2008-04-23 4 S 0 100 54.83 D 27755699 D Common Stock 2008-04-23 4 S 0 100 54.85 D 27755599 D Common Stock 2008-04-23 4 S 0 100 54.91 D 27755499 D Common Stock 2008-04-23 4 S 0 100 54.93 D 27755399 D Common Stock 2008-04-23 4 S 0 300 54.94 D 27755099 D Common Stock 2008-04-23 4 S 0 200 55.05 D 27754899 D Common Stock 2008-04-23 4 S 0 300 55.08 D 27754599 D Common Stock 2008-04-23 4 S 0 300 55.28 D 27754299 D Common Stock 2008-04-23 4 S 0 200 55.49 D 27754099 D Common Stock 2008-04-23 4 S 0 300 55.71 D 27753799 D Common Stock 2008-04-23 4 S 0 100 55.85 D 27753699 D Common Stock 2008-04-23 4 S 0 200 55.87 D 27753499 D Common Stock 2008-04-23 4 S 0 100 56.06 D 27753399 D Common Stock 2008-04-23 4 S 0 100 56.08 D 27753299 D Common Stock 2008-04-23 4 S 0 200 55.98 D 27753099 D Common Stock 2008-04-23 4 S 0 200 56.00 D 27752899 D Common Stock 2008-04-23 4 S 0 18 55.88 D 27752881 D Common Stock 2008-04-23 4 S 0 100 55.92 D 27752781 D Common Stock 2008-04-23 4 S 0 300 55.84 D 27752481 D Common Stock 2008-04-23 4 S 0 200 55.76 D 27752281 D Common Stock 2008-04-23 4 S 0 50 55.78 D 27752231 D Common Stock 2008-04-23 4 S 0 100 55.73 D 27752131 D Common Stock 2008-04-23 4 S 0 100 55.67 D 27752031 D Common Stock 2008-04-23 4 S 0 200 55.64 D 27751831 D Common Stock 2008-04-23 4 S 0 300 55.62 D 27751531 D Common Stock 2008-04-23 4 S 0 100 55.55 D 27751431 D Common Stock 2008-04-23 4 S 0 400 55.54 D 27751031 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 2008-04-25