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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 December 31 , 2020 or □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Commission File Number 1-37556 Delaware ( State or other jurisdiction of incorporation or organization ) Title of each class to Stericycle , Inc. ( Exact name of registrant as specified in its charter ) Large accelerated filer > Smaller reporting company 36-3640402 ( IRS Employer Identification Number ) 2355 Waukegan Road Bannockburn , Illinois 60015 ( Address of principal executive offices , including zip code ) ( 847 ) 367-5910 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) . Name of each exchange on which registered Nasdaq Global Select Market Common Stock , par value $ 0.01 per share SRCL None Securities registered pursuant to Section 12 ( g ) of the Act : Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes x 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 x 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 x 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 ( § 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 x 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 definition of " large accelerated filer " , " accelerated filer " " smaller reporting company " , and " emerging growth company " in Rule 12b - 2 of the Exchange Act . Accelerated filer Emerging Growth Company 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 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 . < Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . YES NO X The aggregate market value of voting and non - voting common equity held by non - affiliates computed by reference to the price at which common equity was last sold as of the last business day of the registrant's most recently completed second fiscal quarter ( June 30 , 2020 ) : $ 5,120,550,890 . On February 22 , 2021 there were 91,609,194 shares of the Registrant's Common Stock outstanding . DOCUMENTS INCORPORATED BY REFERENCE Information required by Items 10 , 11 , 12 and 13 of Part III of this Report is incorporated by reference from the Registrant's definitive Proxy Statement for the 2021 Annual Meeting of Stockholders .