PART IV ITEM 15 Exhibits and Financial Statement Schedules Index to Exhibits Number Description Method of Filing 2.1 Agreement and Plan of Merger dated as of October 24, 2011 by Filed as Exhibit 2.1 to the registrant’s Form 8-K on October 27, and among Cigna Corporation, Cigna Magnolia Corp. and 2011 and incorporated herein by reference. HealthSpring, Inc.* 2.2 Voting Agreement dated as of October 24, 2011 among Cigna Filed as Exhibit 2.3 to the registrant’s Form 8-K on October 27, Corporation and Herbert A. Fritch 2011 and incorporated herein by reference. 3.1 Restated Certificate of Incorporation of the registrant as last Filed as Exhibit 3.1 to the registrant’s Form 10-Q for the quarterly amended October 28, 2011 period ended September 30, 2011and incorporated herein by reference. 3.2 By-Laws of the registrant as last amended and restated December 6, Filed herewith. 2012 4.1 (a) Indenture dated August 16, 2006 between Cigna Corporation and Filed herewith. U.S. Bank National Association (b) Supplemental Indenture No. 1 dated November 11, 2006 between Filed herewith. Cigna Corporation and U.S. Bank National Association (c) Supplemental Indenture No. 2 dated March 15, 2007 between Filed as Exhibit 4.1(c) to the registrant’s Form 10-Q for the Cigna Corporation and U.S. Bank National Association quarterly period ended March 31, 2011 and incorporated herein by reference (d) Supplemental Indenture No. 3 dated March 7, 2008 between Cigna Filed as Exhibit 4.1 to the registrant’s Form 8-K on March 10, Corporation and U.S. Bank National Association 2008 and incorporated herein by reference. (e) Supplemental Indenture No. 4 dated May 7, 2009 between Cigna Filed as Exhibit 99.2 to the registrant’s Form 8-K on May 12, 2009 Corporation and U.S. Bank National Association and incorporated herein by reference. (f) Supplemental Indenture No. 5 dated May 17, 2010 between Cigna Filed as Exhibit 99.2 to the registrant’s Form 8-K on May 28, 2010 Corporation and U.S. Bank National Association and incorporated herein by reference. (g) Supplemental Indenture No. 6 dated December 8, 2010 between Filed as Exhibit 99.2 to the registrant’s Form 8-K on December 9, Cigna Corporation and U.S. Bank National Association 2010 and incorporated herein by reference. (h) Supplemental Indenture No. 7 dated March 7, 2011 between Cigna Filed as Exhibit 4.1 to the registrant’s Form 8-K on March 8, 2011 Corporation and U.S. Bank National Association and incorporated herein by reference. (i) Supplemental Indenture No. 8 dated November 10, 2011 between Filed as Exhibit 4.1 to the registrant’s Form 8-K on November 14, Cigna Corporation and U.S. Bank National Associated 2011 and incorporated herein by reference. 4.2 Indenture dated January 1, 1994 between Cigna Corporation and Filed as Exhibit 4.2 to the registrant’s Form 10-K for the year ended Marine Midland Bank December 31, 2009 and incorporated herein by reference. 4.3 Indenture dated June 30, 1988 between Cigna Corporation and Filed as Exhibit 4.3 to the registrant’s Form 10-K for the year ended Bankers Trust December 31, 2009 and incorporated herein by reference. Exhibits 10.1 through 10.28 are identified as compensatory plans, management contracts or arrangements pursuant to Item 15 of Form 10-K. 10.1 Deferred Compensation Plan for Directors of Cigna Corporation, as Filed as Exhibit 10.1 to the registrant’s Form 10-K for the year amended and restated January 1, 1997 ended December 31, 2011 and incorporated herein by reference. 10.2 Deferred Compensation Plan of 2005 for Directors of Cigna Filed as Exhibit 10.2 to the registrant’s Form 10-K for the year Corporation, Amended and Restated effective April 28, 2010 ended December 31, 2010 and incorporated herein by reference. 10.3 Cigna Corporation Non-Employee Director Compensation Program Filed as Exhibit 10.3 to the registrant’s Form 10-K for the year amended and restated effective January 1, 2012 ended December 31, 2011 and incorporated herein by reference. 10.4 Cigna Restricted Share Equivalent Plan for Non-Employee Directors Filed herewith. as amended and restated effective January 1, 2008 10.5 Cigna Corporation Directors Equity Plan Filed as Exhibit 10.3 to the registrant’s Form 10-Q for the quarterly period ended March 31, 2010 and incorporated herein by reference. 10.6 Cigna Corporation Compensation Program for Independent Vice Filed as Exhibit 10.1 to the registrant’s Form 10-Q for the quarterly Chairman/Chairman of the Board of Directors period ended September 30, 2009 and incorporated herein by reference. 10.7 Cigna Corporation Stock Plan, as amended and restated through Filed as Exhibit 10.7 to the registrant’s Form 10-K for the year July 2000 ended December 31, 2009 and incorporated herein by reference. 10.8 (a) Cigna Stock Unit Plan, as amended and restated effective July 22, Filed as Exhibit 10.1 to the registrant’s Form 10-Q for the quarterly 2008 period ended September 30, 2008 and incorporated herein by reference. (b) Amendment No. 1 to the Cigna Stock Unit Plan, as amended and Filed as Exhibit 10.3 to the registrant’s Form 10-Q for the quarterly restated effective July 22, 2008 period ended June 30, 2010 and incorporated herein by reference. CIGNA CORPORATION -  2012 Form  10-K E-1