X0303 4 2010-10-20 0 0000731766 UNITEDHEALTH GROUP INC UNH 0001024367 LEATHERDALE DOUGLAS W C/O UNITEDHEALTH GROUP 9900 BREN ROAD EAST MINNETONKA MN 55343 1 0 0 0 Common Stock 2010-10-20 4 M 0 10000 16.725 A 924841 D Common Stock 2010-10-20 4 M 0 10000 14.735 A 934841 D Common Stock 2010-10-20 4 M 0 10000 14.625 A 944841 D Common Stock 2010-10-20 4 M 0 10000 15.615 A 954841 D Common Stock 2010-10-20 4 S 0 40000 36.6532 D 914841 D Common Stock 2200 I by Trust 1 Common Stock 2200 I by Trust 2 Common Stock 2200 I by Trust 3 Non-qualified stock option (right to buy) 16.725 2010-10-20 4 M 0 10000 0.00 D 2002-04-01 2011-10-01 Common Stock 10000 0 D Non-qualified stock option (right to buy) 14.735 2010-10-20 4 M 0 10000 0.00 D 2001-07-02 2011-01-02 Common Stock 10000 0 D Non-qualified stock option (right to buy) 14.625 2010-10-20 4 M 0 10000 0.00 D 2001-10-02 2011-04-02 Common Stock 10000 0 D Non-qualified stock option (right to buy) 15.615 2010-10-20 4 M 0 10000 0.00 D 2002-01-02 2011-07-02 Common Stock 10000 0 D This transaction was executed in multiple trades ranging from $36.64 to $36.665 per share. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer, or a security holder of the issuer full information regarding the number of shares and prices at which the transactions were effected. These shares are held in a irrevocable trust for the benefit of the reporting person's grandchild. The reporting person disclaims beneficial ownership of the shares held by his grandchild's irrevocable trust, and this report should not be deemed an admission that the reporting person is the beneficial owner of the shares held by the irrevocable trust for the purposes of Section 16 or for any other purpose. By: Dannette L. Smith, Attorney-in-Fact for: Douglas W. Leatherdale 2010-10-21