Page 1

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 001-31938 ACORDA THERAPEUTICS , INC . ( Exact name of registrant as specified in its charter ) Delaware ( State or other jurisdiction of incorporation or organization ) 420 Saw Mill River Road , Ardsley , New York ( Address of principal executive offices ) to Trading Symbol 13-3831168 ( I.R.S. Employer Identification No. ) 10502 ( Zip Code ) Registrant's telephone number , including area code : ( 914 ) 347-4300 Securities registered pursuant to Section 12 ( b ) of the Act : Name of each exchange on which registered Nasdaq Global Select Market Title of each class Common Stock $ 0.001 par value per share ACOR 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 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 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 No 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 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 Non - accelerated filer 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 . X 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 Exchange Act ) . Yes No As of June 30 , 2020 , the aggregate market value ( based on the closing price on that date ) of the registrant's voting stock held by non - affiliates was $ 34,723,350 . For purposes of this calculation , we have excluded shares of common stock held by directors , officers and stockholders reporting ownership on Schedule 13D ( or amendments thereto ) that exceeds five percent of the common stock outstanding at June 30 , 2020. Exclusion of shares held by any person should not be construed to indicate that the person possesses the power , direct or indirect , to direct or cause the direction of the management or policies of the registrant , or that the person is controlled by or under common control with the registrant . As of March 4 , 2021 , the registrant had 9,489,873 shares of common stock , $ 0.001 par value per share , outstanding . The registrant does not have any non - voting stock outstanding .