UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
 
SCHEDULE 14A
 
Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934 (Amendment No.     )

Filed by the Registrant   x	
 	
Filed by a Party other than the Registrant   o	
 	
Check the appropriate box:	
o	Preliminary Proxy Statement	
o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))	
o	Definitive Proxy Statement	
x	Definitive Additional Materials	
o	Soliciting Material under §240.14a-12	
 	
Morningstar, Inc.	
(Name of Registrant as Specified In Its Charter)	

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)	
 	
Payment of Filing Fee (Check the appropriate box):	
x	No fee required.	
o	Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.	
 	(1)	Title of each class of securities to which transaction applies:	
 	 	 	
 	(2)	Aggregate number of securities to which transaction applies:	
 	 	 	
 	(3)	Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):	
 	 	 	
 	(4)	Proposed maximum aggregate value of transaction:	
 	 	 	
 	(5)	Total fee paid:	
 	 	 	
o	Fee paid previously with preliminary materials.	
o	Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.	
 	(1)	Amount Previously Paid:	
 	 	 	
 	(2)	Form, Schedule or Registration Statement No.:	
 	 	 	
 	(3)	Filing Party:	
 	 	 	
 	(4)	Date Filed:	

 

 
*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 18, 2018 MORNINGSTAR, INC. Date: May 18, 2018 Time: 9:00 AM CDT 22 West Washington Street You are receiving this communication because you hold shares in the above named company. This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at www.proxyvote.com or easily request a paper copy (see reverse side). We encourage you to access and review all of the important information contained in the proxy materials before voting. 1234567 1234567 Envelope # # of # Sequence # 1 OF 2 12 15 0000366785_1 R1.0.1.17 Broadridge Internal Use Only Job # Sequence # See the reverse side of this notice to obtain proxy materials and voting instructions. MORNINGSTAR, INC. 22 WEST WASHINGTON STREET CHICAGO, IL 60602 Investor Address Line 1 Investor Address Line 2 Investor Address Line 3 Investor Address Line 4 Investor Address Line 5 John Sample 1234 ANYWHERE STREET ANY CITY, ONA1A 1A11234567 1234567 1234567 234567 Meeting Information Meeting Type: Annual Meeting For holders as of: March 19, 2018 Location: Morningstar, Inc. Chicago, IL 60602 B A R C O D E

Before You Vote How to Access the Proxy Materials Proxy Materials Available to VIEW or RECEIVE: Have the information that is printed in the box marked by the arrow (located on the by the arrow (located on the following page) in the subject line. How To Vote Please Choose One of the Following Voting Methods marked by the arrow available and follow the instructions. Only 0000366785_2 R1.0.1.17 Vote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. Internal Use 1. Annual Report2. Notice & Proxy Statement How to View Online: following page) and visit: www.proxyvote.com. How to Request and Receive a PAPER or E-MAIL Copy: If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request: 1) BY INTERNET: www.proxyvote.com 2) BY TELEPHONE: 1-800-579-1639 3) BY E-MAIL*: sendmaterial@proxyvote.com * If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 06, 2018 to facilitate timely delivery.

The Board of Directors recommends you vote FOR all of the listed nominees: 1. Election of Directors Nominees Joe Mansueto NOTE: Such other business as may properly come before the meeting or any adjournment thereof. 1a 1b Kunal Kapoor 1c Robin Diamonte 1d Cheryl Francis 1e Steve Kaplan 1f Gail Landis 1g Bill Lyons 1h Jack Noonan 1i Caroline Tsay 1j Hugh Zentmyer The Board of Directors recommends you vote FOR Proposal 2: 2. Ratification of the appointment of KPMG LLP as Morningstar's independent registered public accounting firm for 2018. xxxxxxxxxx Job # Sequence # 0000366785_3 R1.0.1.17 Broadridge Internal Use Only xxxxxxxxxx Cusip Envelope # # of # Sequence # B A R C O D E 23456789012 2 2 2 2 12345678901 12345678901 12345678901 12345678901 12345678901 12345678901 12345678901 12345678901 12345678901 12345678901 Voting items

THE COMPANY NAME INC. - CLASS A THE COMPANY NAME INC. - CLASS C 123,456,789,012.12345 123,456,789,012.12345 THE COMPANY NAME INC. - CLASS F 123,456,789,012.12345 Envelope # # of # Sequence # 0000366785_4 R1.0.1.17 Broadridge Internal Use Only THIS SPACE RESERVED FOR SIGNATURES IF APPLICABLE Job # Sequence # NAME THE COMPANY NAME INC. - COMMON 123,456,789,012.12345 THE COMPANY NAME INC. - CLASS B123,456,789,012.12345 THE COMPANY NAME INC. - CLASS D123,456,789,012.12345 THE COMPANY NAME INC. - CLASS E123,456,789,012.12345 THE COMPANY NAME INC. - 401 K123,456,789,012.12345 Reserved for Broadridge Internal Control Information