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Table of Contents 0 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 Delaware ( State or other jurisdiction of incorporation or organization ) Commission file number : 001-35347 Clovis Oncology , Inc. ( Exact name of Registrant as specified in its charter ) to 5500 Flatiron Parkway , Suite 100 Boulder , Colorado ( Address of principal executive offices ) ( 303 ) 625-5000 ( Registrant's telephone number , including area code ) 90-0475355 ( I.R.S. Employer Identification No. ) Trading Symbol ( s ) CLVS 80301 ( Zip Code ) Not Applicable ( Former name , former address and former fiscal year , if changed since last report ) Securities registered pursuant to Section 12 ( b ) of the Act Title of Each Class Common Stock par Value $ 0.001 per share 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 No " Name of each exchange on which registered The NASDAQ Global Select Market 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 □ 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 ☐ No " Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , 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 . The number of outstanding shares of the registrant's common stock , par value $ 0.001 per share , as of February 12 , 2021 was 104,529,652 . ooo 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 " The aggregate market value of the registrant's common stock , par value $ 0.001 per share , held by non - affiliates of the registrant on June 30 , 2020 , the last business day of the registrant's most recently completed second quarter , was $ 578,173,019 based on the closing price of the registrant's common stock on the NASDAQ Global Select Market on that date of $ 6.75 per share . DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant's definitive proxy statement to be filed with the Securities and Exchange Commission pursuant Regulation 14A in connection with the registrant's 2021 Annual Meeting of Stockho ers , which is to be filed within 120 days after the end of the registrant's fiscal year ended December 31 , 2020 , are incorporated by reference into Part III of this Annual Report on Form 10 - K to the extent stated therein .