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X ☐ 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 TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from or Commission File Number : 001-39037 Delaware ( State or other jurisdiction of incorporation or organization ) SMILEDIRECTCLUB , INC . ( Exact name of registrant as specified in its charter ) 414 Union Street Nashville , TN ( Address of principal executive offices ) to ( 800 ) 848-7566 ( Registrant's telephone number , including area code ) per Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) ( I.R.S. Employer Identification No. ) SDC 83-4505317 37219 ( Zip Code ) Title of each class Class A common stock , par value $ 0.0001 share 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 . 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 Name of each exchange on which registered The NASDAQ Stock Market LLC □ 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