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ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - K TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Title of Each Class Common Stock 1.75 % Euro Notes due 2022 1.25 % Euro Notes due 2023 0.250 % Euro Notes due 2024 0.625 % Euro Notes due 2027 2.125 % Euro Notes due 2030 1.00 % Euro Notes due 2031 3.00 % Euro Notes due 2034 Delaware ( State or Other Jurisdiction of Incorporation or Organization ) 155 Harlem Avenue Glenview Illinois ( Address of Principal Executive Offices ) OR Commission file number 1-4797 ILLINOIS TOOL WORKS INC . ( Exact Name of Registrant as Specified in its Charter ) ITW ITW22 ITW23 ITW24A ITW27 ITW30 ITW31 ITW34 × 0 0 Registrant's telephone number , including area code : ( 847 ) 724-7500 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) . 36-1258310 ( 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 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 > 60025 ( Zip Code ) 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 Name of Each Exchange on Which Registered New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange New York Stock Exchange 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 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 . ( Check one ) : Large accelerated filer Non - accelerated filer Emerging growth company Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No > Documents Incorporated by Reference 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 . Portions of the 2021 Proxy Statement for Annual Meeting of Stockholders to be held on May 7 , 2021 . Accelerated filer Smaller reporting company 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 . 0 The aggregate market value of the voting stock held by non - affiliates of the registrant as of June 30 , 2020 was approximately $ 55.1 billion based on the New York Stock Exchange closing sales price as of June 30 , 2020 . Shares of common stock outstanding at January 31 , 2021 : 316,662,263 . Part III