UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) ፼ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2017 OR Ⅺ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 1-8323 29OCT201118203261 CIGNA CORPORATION (Exact name of registrant as specified in its charter) Delaware 06-1059331 (State or other jurisdiction of incorporation or organization) (I.R.S. Employer Identification No.) 900 Cottage Grove Road, Bloomfield, Connecticut 06002 (Address of principal executive offices) (Zip Code) (860) 226-6000 Registrant’s telephone number, including area code (860) 226-6741 or (215) 761-5511 Registrant’s facsimile number, including area code SECURITIES REGISTERED PURSUANT TO SECTION 12(B) OF THE ACT: Title of each class Name of each exchange on which registered Common Stock, Par Value $0.25 New York Stock Exchange, Inc. SECURITIES REGISTERED PURSUANT TO SECTION 12(G) OF THE ACT: NONE Indicate by check mark Yes No • if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. ፼ Ⅺ • if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act Ⅺ ፼ • whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days ፼ Ⅺ • whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). ፼ Ⅺ • if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K ፼ • whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See definitions of ‘‘large accelerated filer,’’ ‘‘accelerated filer,’’ ‘‘smaller reporting company’’ and ‘‘emerging growth company’’ in Rule 12b-2 of the Exchange Act. Large accelerated filer ፼ Accelerated filer Ⅺ Non-accelerated filer Ⅺ Smaller reporting company Ⅺ Emerging growth company Ⅺ • If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Ⅺ • whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Ⅺ ፼ The aggregate market value of the voting stock held by non-affiliates of the registrant as of June 30, 2017 was approximately $42.2 billion. As of January 31, 2018, 242,875,357 shares of the registrant’s Common Stock were outstanding. DOCUMENTS INCORPORATED BY REFERENCE Part III of this Form 10-K incorporates by reference information from the registrant’s definitive proxy statement related to the 2018 annual meeting of shareholders. Table of Contents FREQUENTLY REQUESTED 10-K INFORMATION Page Risk Factors ................................................................................................................................................. 21 Executive Overview................................................................................................................................... 35 Health Care Industry Developments.................................................................................................... 40 Liquidity and Capital Resources ........................................................................................................... 41 Critical Accounting Estimates................................................................................................................ 44 Segment Information................................................................................................................................ 105 Revenues by Product Type..................................................................................................................... 107 Page CAUTIONARY STATEMENT PART I Item 1. Business . Overview............................................................................................................................ 1 . Global Health Care ................................................................................................................3 . Global Supplemental Benefits..................................................................................................10 . Group Disability and Life........................................................................................................12 . Other Operations .................................................................................................................14 . Investments and Investment Income ..........................................................................................14 . Regulation .........................................................................................................................15 . Miscellaneous .................................................................................................................... 20 Item 1A. Risk Factors..................................................................................................................................................................21 Item 1B. Unresolved Staff Comments................................................................................................................................. 30 Item 2. Properties.................................................................................................................................................................... 30 Item 3. Legal Proceedings.................................................................................................................................................... 30 Item 4. Mine Safety Disclosures.......................................................................................................................................... 30 EXECUTIVE OFFICERS OF THE REGISTRANT....................................................................................................................31 PART II Item 5. Market for Registrant’s Common Equity, Related Stockholder Matters and Issuer Purchases of Equity Securities...................................................................................................................................................32 Item 6. Selected Financial Data.......................................................................................................................................... 34 Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations ............35 Item 7A. Quantitative and Qualitative Disclosures about Market Risk..................................................................... 56 Item 8. Financial Statements and Supplementary Data..............................................................................................57 Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure........109 Item 9A. Controls and Procedures ......................................................................................................................................109 Item 9B. Other Information....................................................................................................................................................109 Page PART III Item 10. Directors, Executive Officers and Corporate Governance..........................................................110 A. Directors of the Registrant ....................................................................................................110 B. Executive Officers of the Registrant .........................................................................................110 C. Code of Ethics and Other Corporate Governance Disclosures........................................................... 110 D. Section 16(a) Beneficial Ownership Reporting Compliance.............................................................. 110 Item 11. Executive Compensation..........................................................................................................110 Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters ................................................................................................................................................. 111 Item 13. Certain Relationships and Related Transactions, and Director Independence ..................................... 111 Item 14. Principal Accountant Fees and Services............................................................................................................ 111 PART IV Item 15. Exhibits and Financial Statement Schedules ............................................................................ 112 Item 16. 10-K Summary