UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(D)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of Report (Date of earliest event reported): March 4, 2021

Supernova Partners Acquisition Company II, Ltd.

(Exact name of registrant as specified in its charter)

(202) 918-7050

(Registrant’s telephone number, including area code)

Check the appropriate box below if the Form 8-K is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth 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.  ☐

On March 4, 2021, Supernova Partners Acquisition Company II, Ltd. (the “Company”) consummated its initial public offering (the “IPO”) of 34,500,000 units (the “Units”). Each Unit consists of one Class A ordinary share, par value $0.0001 per share (“Class A Ordinary Share”), of the Company and one-fourth of one redeemable warrant of the Company (the “Warrants”), with each whole Warrant entitling the holder thereof to purchase one whole Class A Ordinary Share for $11.50 per share. The Units were sold at a price of $10.00 per Unit, generating gross proceeds to the Company of $345,000,000.

Simultaneously with the consummation of the IPO on March 4, 2021, the Company completed the private sale (the “Private Placement”) of 4,450,000 warrants (the “Private Placement Warrants”) at a purchase price of $2.00 per Private Placement Warrant, to the Company’s sponsor, Supernova Partners II LLC, generating gross proceeds to the Company of $8,900,000.

Approximately $345 million of the net proceeds from the IPO and the sale of the Private Placement Warrants to the Sponsor have been deposited in a trust account maintained by American Stock Transfer & Trust Company, acting as trustee, established for the benefit of the Company’s public stockholders. An audited balance sheet as of March 4, 2021 reflecting receipt of the net proceeds from the IPO and the Private Placement is included as Exhibit 99.1 to this Current Report on Form 8-K.

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

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