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Table of Contents ( Mark One ) X 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 No. UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 0-55108 Title of each class None Nevada ( State or other jurisdiction of incorporation or organization ) FORM 10 - K 5430 LBJ Freeway , Suite 1485 , Dallas , Texas ( Address of principal executive offices ) Registrant's telephone number , including area code Securities registered pursuant to Section 12 ( b ) of the Act : BLACKBOXSTOCKS INC . ( Exact name of registrant as specified in its charter ) ( 972 ) 726-9203 to Trading Symbol ( s ) N / A 45-3598066 ( I.R.S. Employer Identification No. ) Securities registered pursuant to Section 12 ( g ) of the Act : Common Stock , par value $ .001 ( Title of class ) 75240 ( Zip Code ) Name of each exchange on which registered N / A Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes No > 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 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