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● UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , DC 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 □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number 1-2958 HUBBELL INCORPORATED ( Exact name of registrant as specified in its charter ) Connecticut ( State or other jurisdiction of incorporation or organization ) 40 Waterview Drive Shelton CT ( Address of principal executive offices ) HUBBELL Title of each Class Common Stock - par value $ 0.01 per share 06-0397030 ( I.R.S. Employer Identification No. ) ( 475 ) 882-4000 ( Registrant's telephone number , including area code ) 06484 ( Zip Code ) SECURITIES REGISTERED PURSUANT TO SECTION 12 ( b ) OF THE ACT : Trading Symbol ( s ) Name of Exchange on which Registered New York Stock Exchange HUBB 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 . if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 . Yes Yes if 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 report ) , Yes and ( 2 ) has been subject to such filing requirements for the past 90 days . whether the registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S - T ( §232.405 of this chapter ) during the preceding 12 months ( or for such Yes shorter period that the registrant was required to submit such files ) . No No Emerging growth company 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 . whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . No No 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 Smaller reporting company Accelerated filer 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 standard provided pursuant to Section 13 ( a ) of the Exchange Act . Yes The approximate aggregate market value of the voting stock held by non - affiliates of the registrant as of June 30 , 2020 was $ 6,739,772,177 * . The number of shares outstanding of Hubbell Common Stock as of February 9 , 2021 is 54,296,993 . DOCUMENTS INCORPORATED BY REFERENCE Portions of the definitive proxy statement for the annual meeting of shareholders scheduled to be held on May 4 , 2021 , to be filed with the Securities and Exchange Commission ( the “ SEC " ) , are incorporated by reference in answer to Part III of this Form 10 - K . * Calculated by excluding all shares held by Executive Officers and Directors of registrant without conceding that all such persons or entities are " affiliates " of registrant for purpose of the Federal Securities Laws . No