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Table of Contents 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 12/31/2020 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 No. 1-3157 INTERNATIONAL PAPER COMPANY ( Exact name of registrant as specified in its charter ) New York ( State or other jurisdiction of incorporation or organization ) Title of each class Common Shares 38197 ( Zip Code ) Registrant's telephone number , including area code : 6400 Poplar Avenue Memphis , Tennessee ( Address of principal executive offices ) 901 419-9000 Securities registered pursuant to Section 12 ( b ) of the Act : Trading symbol ( s ) IP 13-0872805 ( I.R.S. Employer Identification No. ) 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 y No Name of each exchange on which registered New York Stock Exchange 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 ý Accelerated filer 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 ý 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 ( section 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 ý No Non - accelerated filer 0 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 definitions of " large accelerated filer , " " accelerated filer , " " smaller reporting company , " and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Smaller reporting company Large accelerated filer 0 Emerging growth company 0 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 . o 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 ý The aggregate market value of the Company's outstanding common stock held by non - affiliates of the registrant , computed by reference to the closing price as reported on the New York Stock Exchange , as of the last business day of the registrant's most recently completed second fiscal quarter ( June 30 , 2020 ) was approximately $ 13,786,056,781 . The number of shares outstanding of the Company's common stock as of February 12 , 2021 was 393,117,117 . Documents incorporated by reference : Portions of the registrant's proxy statement filed within 120 days of the close of the registrant's fiscal year in connection with registrant's 2021 annual meeting of shareholders are incorporated by reference into Part III of this Form 10 - K .