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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 State of Incorporation : Delaware Title of each class Common Stock , Par Value $ .01 Per Share 0.375 % Notes due 2022 0.950 % Notes due 2023 1.500 % Notes due 2026 1.750 % Notes due 2030 1.500 % Notes due 2031 SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 Commission file number 1-3285 3M COMPANY I.R.S. Employer Identification No. 41-0417775 Principal executive offices : 3M Center , St. Paul , Minnesota 55144 Telephone number : ( 651 ) 733-1110 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) MMM MMM MMM22A MMM23 MMM26 MMM30 MMM31 Note : The common stock of the registrant is also traded on the SWX Swiss Exchange . Securities registered pursuant to section 12 ( g ) of the ActNone Name of each exchange on which registered New York Stock Exchange Inc. Chicago Stock Exchange , Inc. New York Stock Exchange Inc. New York Stock Exchange Inc. New York Stock Exchange Inc New York Stock Exchange Inc. New York Stock Exchange Inc. Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rul405 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 ( dof 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 Rul405 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 . Yes ☑No Indicate by check mark whether the registrant is a shell company ( as defined in Rulel 2b - 2 of the Act ) . Yes ☐ No ☑ The aggregate market value of voting stock held by nonaffiliates of the registrant , computed by reference to the closing price and shares outstanding , was approximately $ 1.7 billion as of January 31 , 2021 ( approximately $ 89.9 billion as of June 30 , 2020 , the last business day of the registrant's most recently completed second quarter ) . Shares of common stock outstanding at January 31 , 2021 : 579.1 million DOCUMENTS INCORPORATED BY REFERENCE Parts of the Company's definitive proxy statement ( to be filed pursuant to Regulation 14A within 120 days after Registrant's fiscal year - end of December 31 , 2020 ) for its annual meeting to be held on May 11 , 2021 , are incorporated by reference in this Form 10 - K in response to Part III , Items 10 , 11 , 12 , 13 and 14 .