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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 40 - F REGISTRATION STATEMENT PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 X OR ANNUAL REPORT PURSUANT TO SECTION 13 ( a ) OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For year period ended December 31 , 2020 Commission file number : 001-33621 British Columbia , Canada ( Province or other jurisdiction of incorporation or organization ) ALEXCO ALEXCO RESOURCE CORP . ( Exact Name of Registrant as Specified in its Charter ) 1040 ( Primary Standard Industrial Classification Code ) 91-0742812 ( I.R.S. Employer Identification No. ) Suite 1225 , Two Bentall Centre , 555 Burrard Street , Box 216 Vancouver , British Columbia , Canada V7X 1M9 ( 604 ) 633-4888 ( Address and Telephone Number of Registrant's Principal Executive Offices ) DL Services Inc. Copies to : Jason K. Brenkert Dorsey & Whitney LLP 1400 Wewatta Street , Suite 400 Denver , Colorado 80202 ( 303 ) 352-1133 Columbia Center , 701 Fifth Avenue , Suite 6100 Seattle , Washington 98104 ( 206 ) 903-8800 ( Name , address ( including zip code ) and telephone number ( including area code ) of agent for service in the United States ) Securities registered or to be registered pursuant to Section 12 ( b ) of the Act : Title of Each Class : Common Shares , no par value Trading Symbol ( s ) AXU Name of Each Exchange On Which Registered : NYSE American Securities registered or to be registered pursuant to Section 12 ( g ) of the Act : N / A Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act : N / A For annual reports , indicate by check mark the information filed with this form : x Annual Information Form x Audited Annual Financial Statements Indicate the number of outstanding shares of each of the issuer's classes of capital or common stock as of the close of the period covered by the annual report : As at December 31 , 2020 , 137,492,168 common shares of the Registrant were issued and outstanding . Indicate by check mark whether the Registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Exchange Act 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 . X Yes No