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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 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 ☐ 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 001-14039 FORM 10 - K Delaware State or Other Jurisdiction of Incorporation or Organization One Briarlake Plaza Title of Each Class Common Stock , $ 0.01 par value Callon Petroleum Company ( Exact Name of Registrant as Specified in Its Charter ) 2000 W. Sam Houston Parkway S. , Suite 2000 Houston , Texas Address of Principal Executive Offices 281-589-5200 ( Registrant's Telephone Number , Including Area Code ) 64-0844345 Accelerated filer Emerging growth company I.R.S. Employer Identification No. | 77042 Zip Code Securities registered pursuant to Section 12 ( b ) of the Act : CPE Securities registered pursuant to section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes > Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes Indicate by check mark 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 . Yes X No Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes X No Name of Each Exchange on Which Registered New York Stock Exchange Indicate by check mark 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 the 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 Smaller reporting company No No > Non - accelerated filer 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 . Indicate by check mark 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 . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No | The aggregate market value of the voting and non - voting common equity held by non - affiliates of the registrant as of June 30 , 2020 was approximately $ 443.3 million . The Registrant had 46,153,710 shares of common stock outstanding as of February 23 , 2021 . DOCUMENTS INCORPORATED BY REFERENCE Portions of the definitive proxy statement of Callon Petroleum Company ( to be filed no later than 120 days after December 31 , 2020 ) relating to the 2021 Annual Meeting of Shareholders , which are incorporated into Part III of this Form 10 - K .