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Table of Contents ( Mark One ) ☑ 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 001-39351 ΤΟ NUVATION BIO INC . ( Exact name of Registrant as specified in its Charter ) Delaware ( State or other jurisdiction of incorporation or organization ) 1500 Broadway New York , New York ( Address of principal executive offices ) 85-0862255 ( I.R.S. Employer Identification No. ) 10036 ( Zip Code ) Registrant's telephone number , including area code : ( 332 ) 208-6102 Title of each class Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) Class A Common Stock , Par Value $ 0.0001 Per Share Warrants to Purchase Class A Common Stock NUVB NUVB.WS Securities registered pursuant to section 12 ( g ) of the Act : None Name of each exchange on which registered New York Stock Exchange New York Stock Exchange 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 15 ( d ) of the Act . YES ☐ NO ☑ NO ☑ 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 □ 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 :