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
UnitedHealth Group Incorporated
(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 June 4, 2018. UNITEDHEALTH GROUP INCORPORATED You are receiving this communication because you hold shares in the company named above. 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, scan the QR Barcode on the reverse side, 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. UNITEDHEALTH GROUP INCORPORATED 9900 BREN ROAD EAST MINNETONKA, MN 55343 proxy materials and voting instructions. E44232-P04834 See the reverse side of this notice to obtain Meeting Information Meeting Type:Annual Meeting For holders as of:April 10, 2018 Date: June 4, 2018Time: 10:00 a.m. Central Time Location: 11 East Walton Street Third Floor – Thoreau Room Chicago, IL 60611

Before You Vote How to Access the Proxy Materials Have the information that is printed in the box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) XXXX XXXX XXXX XXXX (located on the following page) in the subject line. VIEW MATERIALS & VOTE  SCAN TO How To Vote Please Choose One of the Following Voting Methods box marked by the arrow XXXX XXXX XXXX XXXX (located on the following page) available and follow the instructions. the arrow XXXX XXXX XXXX XXXX Vote Confirmation is available 24 hours after your vote is received beginning May 21, 2018, with E44233-P04834 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: Go to www.proxyvote.com or from a smartphone, scan the QR Barcode above. Have the information that is printed in the Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card. Vote Confirmation: You may confirm that your instructions were received and included in the final tabulation to be issued at the Annual Meeting on June 4, 2018 via the ProxyVote Confirmation link at www.proxyvote.com by using the information that is printed in the box marked by the final vote tabulation remaining available through August 3, 2018. Proxy Materials Available to VIEW or RECEIVE: NOTICE AND PROXY STATEMENTANNUAL REPORT How to View Online: and visit: www.proxyvote.com, or scan the QR Barcode below. 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 by the arrow 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 21, 2018 to facilitate timely delivery.

The Board of Directors recommends you vote FOR each of the nominees for director in Proposal 1, FOR Proposal 2 and FOR Proposal 3. 1. Election of Directors Nominees: 2. Advisory approval of the Company’s executive compensation. 1a. William C. Ballard, Jr. 3. Ratification of the appointment of Deloitte & Touche LLP as the independent registered public accounting firm for the Company for the year ending December 31, 2018. 1b. Richard T. Burke 1c. Timothy P. Flynn 1d. Stephen J. Hemsley 1e. Michele J. Hooper 1f. F. William McNabb III 1g. Valerie C. Montgomery Rice, M.D. 1h. Glenn M. Renwick 1i. Kenneth I. Shine, M.D. 1j. David S. Wichmann 1k. Gail R. Wilensky, Ph.D. E44234-P04834 Voting Items

E44235-P04834