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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 40 - F [ Check one ] ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 ☑ OR ANNUAL REPORT PURSUANT TO SECTION 13 ( a ) OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 Commission File Number 001-34244 HUDBAY MINERALS INC . ( Exact name of Registrant as specified in its charter ) N / A ( Translation of Registrant's name into English ( if applicable ) ) Canada ( Province or other jurisdiction of incorporation or organization ) 1000 ( Primary Standard Industrial Classification Code Number ( if applicable ) ) 98-0485558 ( I.R.S. Employer Identification Number ( if applicable ) ) 25 York Street Suite 800 Toronto , Ontario M5J 2V5 , Canada 416 362-8181 ( Address and telephone number of Registrant's principal executive offices ) Corporation Service Company 2711 Centerville Road , Suite 400 Wilmington , DE 19808 302 636-5401 ( Name , address ( including zip code ) and telephone number ( including area code ) of agent for service in the United States )