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.     )

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o	Preliminary Proxy Statement	
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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)	
 	
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*** Exercise Your Right to Vote *** Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to Be Held on May 17, 2019 MORNINGSTAR, INC. 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. MORNINGSTAR, INC. 22 WEST WASHINGTON STREET CHICAGO, IL 60602 0000407632_1 R1.0.1.18 See the reverse side of this notice to obtain proxy materials and voting instructions. Meeting Information Meeting Type: Annual Meeting For holders as of: March 18, 2019 Date: May 17, 2019Time: 9:00 AM CDT Location: Morningstar, Inc. 22 West Washington Street Chicago, IL 60602

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. 0000407632_2 R1.0.1.18 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. 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 05, 2019 to facilitate timely delivery.

The Board of Directors recommends you vote FOR the following: 1. 1a Election of Directors Nominees Joe Mansueto NOTE: Such other business as may properly come before the meeting or any adjournment thereof. 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 the following proposal: 2. Ratification of the appointment of KPMG LLP as Morningstar's independent registered public accounting firm for 2019. 0000407632_3 R1.0.1.18 Voting items

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