Page 1

Table of Contents ( Mark One ) 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 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 Title of each class Common Shares , no par value to Commission File No. 1-34370 WASTE CONNECTIONS , INC . ( Exact name of registrant as specified in its charter ) Ontario , Canada ( State or other jurisdiction of incorporation or organization ) 98-1202763 ( I.R.S. Employer Identification No. ) 610 Applewood Crescent , 2nd Floor Vaughan Ontario L4K 0E3 Canada ( Address of principal executive offices ) ( 905 ) 532-7510 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) WCN 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 þ No □ Name of each exchange on which registered New York Stock Exchange ( " NYSE " ) Toronto Stock Exchange ( “ TSX ” ) 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 þ 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 þ No □ □ Accelerated filer 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 þ 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 ) : þ Large accelerated filer Non - accelerated filer □ Emerging growth company 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 . □ □ Smaller reporting 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 . þ Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . Yes No þ As of June 30 , 2020 , the aggregate market value of shares held by non - affiliates of the registrant , based on the closing sales price for the registrant's common shares , as reported on the New York Stock Exchange , was $ 24,588,674,819 . Number of common shares outstanding as of February 9 , 2021 : 262,233,072 DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant's definitive Management Information Circular and Proxy Statement for the 2021 Annual Meeting of Shareholders ( which will be filed with the SEC pursuant to Regulation 14A of the Securities Exchange Act of 1934 , as amended , or the Exchange Act , and with the securities commissions or similar regulatory authorities in Canada within 120 days after the end of our 2020 fiscal year ) are incorporated by reference into Part III hereof .