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( Mark One ) [ X ] Annual Report Pursuant to Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 [ Fee Required ] For the Fiscal Year Ended December 31 , 2020 [ ] U.S. Securities and Exchange Commission Washington , D.C. 20549 FORM 10 - K Transition Report Under Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 [ No Fee Required ] Commission File Number 0-20791 AMARILLO BIOSCIENCES , INC . ( Exact name of registrant as specified in its charter ) TEXAS ( State or other jurisdiction of incorporation or organization ) 4134 Business Park Drive , Amarillo , Texas ( Address of principal executive offices ) Issuer's telephone number , including area code : Securities registered under Section 12 ( b ) of the Exchange Act . Securities registered under Section 12 ( g ) of the Exchange Act . Large accelerated filer [ ] Non - accelerated filer [ ] Emerging growth company [ ] None . Common Stock , Par Value $ .01 75-1974352 ( IRS Employer Identification No. ) 79110-4225 Zip Code ( 806 ) 376-1741 Indicate by check mark whether the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . [ ] Yes [ √ ] No Indicate by check mark whether the issuer is not required to file reports pursuant to Section 13 or 15 ( d ) of the Exchange 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 Exchange Act of 1934 during the past 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 if there is no disclosure of delinquent filers in response to Item 405 of Regulation S - K ( Sec . 229.405 of this chapter ) is not contained herein , and will not be contained , to the best of registrant's knowledge , in definitive proxy or information statements incorporated by reference in Part III of this Form 10 - K or any amendment to this Form 10 - K . [ √ ] 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 . Accelerated filer [ ] Smaller reporting 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 . [ ] Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Exchange Act ) . [ ] Yes [ √ ] No