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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 ( Mark One ) ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31 , 2020 FORM 10 - K □ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from Delaware ( State or other jurisdiction of incorporation or organization ) or Commission File Number 001-39936 DIAMONDHEAD HOLDINGS CORP . ( Exact name of registrant as specified in its charter ) Securities registered pursuant to Section 12 ( b ) of the Act : Title of each class Units , each consisting of one share of Class A common stock , $ 0.0001 per value and one fourth of one redeemable warrant 250 Park Ave. 7th Floor , New York , New York 10177 ( Address of principal executive offices including zip code ) to ( 212 ) 572-6260 ( Registrant's telephone number , including area code ) Trading Symbol ( s ) DHHCU DHHC 85-3460766 ( IRS Employer Identification No. ) DHHCW Name of each exchange on which registered The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC Class A common stock , par value $ 0.0001 per share Warrants , each whole warrant exercisable for one share of Class A common stock , each at an exercise price of $ 11.50 per share The Nasdaq Stock Market LLC 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 > Check whether the issuer ( 1 ) filed all reports required to be filed by Section 13 or 15 ( d ) of the Exchange Act 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 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