Page 1

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , DC 20549 FORM 10 - K Annual Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 For the Year Ended December 31 , 2020 Transition Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 Commission File Number : 814-00899 BLACKROCK TCP CAPITAL CORP . ( Exact Name of Registrant as Specified in Charter ) Delaware ( State or Other Jurisdiction of Incorporation ) 2951 28th Street , Suite 1000 Santa Monica , California ( Address of Principal Executive Offices ) Common Stock , par value $ 0.001 per share ( Title of each class ) ( 310 ) 566-1000 56-2594706 TCPC ( Trading Symbol ( s ) ) ( IRS Employer Identification No. ) ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : 90405 ( Zip Code ) NASDAQ Global Select Market ( Name of each exchange where registered ) Securities registered pursuant to Section 12 ( g ) of the Act : None Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act : Yes x 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 and ( 2 ) has been subject to such filing requirements for the past 90 days : Yes x No Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site , if any , every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit and post such files ) . Yes " No " Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , or a non - accelerated filer . See definition of " accelerated filer and large accelerated filer " in Rule 12b - 2 of the Exchange Act . ( Check one ) :