UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Title of each classTrading Symbol(s)Name of each exchange on which registered Units, each consisting of one share of Class A Common Stock, par value $0.0001 per share, and one-fourth of one Redeemable Warrant HYACU The NASDAQ Stock Market LLC Class A Common Stock, par value $0.0001 per share HYAC The NASDAQ Stock Market LLC Warrants, each exercisable for one share of Class A Common Stock for $11.50 per share HYACW The NASDAQ Stock Marke ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-Q (Mark One) ☒ QUARTERLY REPORT UNDER SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to | --- | --- | --- | |------------------------------------------------------------------------------------------------------------------------------ ...

Table of Contents Title of each classTrading Symbol(s)Name of each exchange on which registered Units, each consisting of one share of Class A Common Stock, par value $0.0001 per share, and one-fourth of one Redeemable Warrant HYACU The NASDAQ Stock Market LLC Class A Common Stock, par value $0.0001 per share HYAC The NASDAQ Stock Market LLC Warrants, each exercisable for one share of Class A Common Stock for $11.50 per share HYACW The NASDAQ Stock Market LLC UNITED STATES SECURITIES AND EXCHANGE COMMISSION ...