Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of Earliest Event Reported):   December 6, 2012

UnitedHealth Group Incorporated
(Exact name of registrant as specified in its charter)

Minnesota 1-10864 41-1321939
(State or other jurisdiction
(I.R.S. Employer
of incorporation) File Number) Identification No.)
UnitedHealth Group Center, 9900 Bren Road East, Minnetonka, Minnesota   55343
(Address of principal executive offices)
(Zip Code)
Registrant’s telephone number, including area code:   952-936-1300

Not Applicable
Former name or former address, if changed since last report


Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

[  ]  Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
[  ]  Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
[  ]  Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
[  ]  Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Item 8.01 Other Events.

On December 6, 2012, Amil Participações S.A. ("Amil"), a majority-owned subsidiary of UnitedHealth Group Incorporated (the "Company"), disclosed, pursuant to Brazilian law, that an affiliate of the Company purchased an additional 17,779,700 Amil shares in open market transactions on the Sao Paulo stock exchange (BM&FBOVESPA) and 8,283,405 newly-issued Amil shares in a private transaction with option holders under Amil’s employee stock option plan. These purchases took place in Brazil and bring the stake in Amil attributable to the Company as of December 5, 2012 to approximately 64.5% of Amil’s outstanding shares.


Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

    UnitedHealth Group Incorporated
December 6, 2012   By:   /s/ Richard J. Mattera
        Name: Richard J. Mattera
        Title: Assistant Secretary