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( Mark One ) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 OR ● ● UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 Cigna . ● FORM 10 - K TRANSITION REPORT PURSUAN TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission file number 001-38769 Title of each class Common Stock , Par Value $ 0.01 Delaware ( State or other jurisdiction of incorporation or organization ) 900 Cottage Grove Road , Bloomfield , Connecticut ( Address of principal executive offices ) Cigna Corporation ( Exact name of registrant as specified in its charter ) Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . X ( 860 ) 226-6000 Registrant's telephone number , including area code ( I.R.S. Employer Identification No. ) 82-4991898 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) CI 06002 ( Zip Code ) Securities registered pursuant to Section 12 ( g ) of the Act : NONE Name of each exchange on which registered New York Stock Exchange , Inc. if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act 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 Accelerated filer Smaller reporting company whether the registrant has submitted electronically every Interactive Data File required to be submitted 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 such files ) Yes 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 . X 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 whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) X X Non - accelerated filer Emerging growth company X No The aggregate market value of the voting stock held by non - affiliates of the registrant as of June 30 , 2020 was approximately $ 68.9 billion . As of January 31 , 2021 , 351,845,606 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 2021 annual meeting of shareholders .