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( Mark One ) ☑ ☐ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K 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 Delaware to Commission file number 1-4300 APACHE CORPORATION ( State or other jurisdiction of incorporation or organization ) ( Exact name of registrant as specified in its charter ) 41-0747868 ( I.R.S. Employer Identification No. ) One Post Oak Central , 2000 Post Oak Boulevard , Suite 100 , Houston , Texas 77056-4400 ( Address of principal executive offices ) ( Zip Code ) Registrant's telephone number , including area code ( 713 ) 296-6000 Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Common Stock , $ 0.625 par value Securities registered pursuant to section 12 ( g ) of the Act : None Trading Symbol ( s ) APA Name of each exchange on which registered Nasdaq Global Select Market Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes ☑No 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 No ☑ 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 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 > No ☐ 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 ☑Accelerated filer Non - accelerated filer Smaller reporting company Emerging growth company ☐ 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 Act ) : Yes No ☑ Aggregate market value of the voting and non - voting common equity held by non - affiliates of registrant as of June 30 , 2020 Number of shares of registrant's common stock outstanding as of January 29 , 2021 Documents Incorporated By Reference $ 5,095,687,766 377,860,971 Portions of the registrant's definitive proxy statement relating to the registrant's 2021 annual meeting of stockholders are incorporated by reference in Part II and Part III of this Annual Report on Form 10 - K . On January 4 , 2021 , the registrant ( Apache ) announced that its Board of Directors authorized Apache to proceed with the implementation of a holding company reorganization , in connection with which , Apache will create APA Corporation , a new holding company ( APA ) . Upon completion of the holding company reorganization , Apache will be a wholly - owned subsidiary of APA , APA will be