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10/17/25 , 6:01 PM 40 - F 1 d141434d40f.htm 40 - F 40 - F UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 40 - F 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 : 1-14228 CAMECO CORPORATION ( Exact name of Registrant as specified in its charter ) CANADA ( Province or other jurisdiction of incorporation or organization ) 1090 ( Primary Standard Industrial Classification Code Number ) 98-0113090 ( I.R.S. Employer Identification ) 2121 - 11th Street West , Saskatoon , Saskatchewan , Canada , S7M 1J3 , Telephone : ( 306 ) 956-6200 ( Address and telephone number of Registrant's principal executive offices ) Doug Pavlick , Power Resources , Inc. , Smith Ranch - Highland Operation , 762 Ross Road , Douglas , Wyoming , USA , 82633 Telephone : ( 307 ) 358-6541 ( Name , address , ( including zip code ) and telephone number ( including area code ) of agent for service in the United States ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of Class : Common Shares , no par value Trading Symbol ( s ) : CCJ Name of Exchange where Securities are listed : New York Stock Exchange Securities registered or to be registered pursuant to Section 12 ( g ) of the Act : None Securities for which there is a reporting obligation pursuant to Section 15 ( d ) of the Act : None Information filed with this Form : ☑Annual Information Form ☑Audited annual financial statements 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 : 396,262,741 Common Shares outstanding as of December 31 , 2020 https://www.sec.gov/Archives/edgar/data/1009001/000119312521087174/d141434d40f.htm 1/7 17