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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1289419	Morningstar Inc.	MORN	Investment Advice (6282)	363297908

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1324003	Tao Huang	C/O Morningstar, Inc. 22 West Washington Street Chicago IL 60602	Chief Operating Officer	No	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership
Common Stock	Acquisiton	2010-12-09	1,000	$23.29	477,051	No	4	M	Direct
Common Stock	Disposition	2010-12-09	1,000	$51.84	476,051	No	4	S	Direct
Common Stock	Acquisiton	2010-12-10	1,000	$23.29	477,051	No	4	M	Direct
Common Stock	Disposition	2010-12-10	1,000	$52.04	476,051	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership
No	4	M	Direct
No	4	S	Direct
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Employee Stock Option (Right to Buy)	Disposition	2010-12-09	1,000	$0.00	1,000	$23.29
Common Stock	Employee Stock Option (Right to Buy)	Disposition	2010-12-10	1,000	$0.00	1,000	$23.29

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
14,097		2015-05-02	No	4	M	Direct
13,097		2015-05-02	No	4	M	Direct

Footnotes

The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 3, 2010
The options became exercisable in 4 equal installments on May 2, 2006, 2007, 2008, and 2009.
The exercise price increases over the term of the option at a rate equal to the 10-year Treasury bond yield as of the date of grant ($18.50). On December 9 2010, the exercise price was $23.2907.
The exercise price increases over the term of the option at a rate equal to the 10-year Treasury bond yield as of the date of grant ($18.50). On December 10, 2010, the exercise price was $23.2933.