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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 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number : 001-39648 For the fiscal year ended December 31 , 2020 OR YELLOWSTONE ACQUISITION COMPANY ( Exact name of registrant as specified in its Charter ) Delaware ( State or other jurisdiction of incorporation or organization ) 1601 Dodge Street , Suite 3300 Omaha , NE ( Address of principal executive offices ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of Class Units , each consisting of one share of Class A common stock , $ 0.0001 par value , and one - half of one redeemable warrant Shares of Class A common stock , $ 0.0001 par value included as part of the units Large accelerated filer Non - accelerated filer Emerging growth company ☐ X X ( I.R.S. Employer Identification No. ) Trading Symbols YSACU YSAC 85-2732947 YSACW 68102 ( Zip Code ) Warrants , included as part of the units , each whole warrant exercisable for one share of Class A common stock at an exercise price of $ 11.50 per share 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 NO 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 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 Name of Exchange on Which Registered The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC 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 The Nasdaq Stock Market LLC 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 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 X