SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or Section 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 25, 2020

ACON S2 ACQUISITION CORP.

(Exact name of registrant as specified in its charter)

(202) 454-1100

Registrant’s telephone number, including area code

Not Applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing 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 or Rule 12b-2 of the Securities Exchange Act of 1934.

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 September 21, 2020, ACON S2 Acquisition Corp. (the “Company”) consummated an initial public offering (the “IPO”) of 25,000,000 units (the “Units”), at an offering price of $10.00 per Unit and a private placement with ACON S2 Sponsor L.L.C. of 4,666,667 private placement warrants at a price of $1.50 per warrant (the “Private Placement”). The net proceeds from the IPO together with certain of the proceeds from the Private Placement, $250,000,000 in the aggregate (the “Offering Proceeds”), were placed in a trust account established for the benefit of the Company’s public shareholders and the underwriter of the IPO with Continental Stock Transfer & Trust Company acting as trustee. Except with respect to interest earned on the Offering Proceeds held in the trust account that may be released to the Company to pay its income taxes, if any, the Company’s amended and restated certificate of incorporation provides that the Offering Proceeds will not be released from the trust account until the earliest of (a) the completion of the Company’s initial business combination, (b) the redemption of any public shares properly tendered in connection with a shareholder vote to amend the Company’s amended and restated certificate of incorporation (i) to modify the substance or timing of the Company’s obligation to provide holders of the Company’s Class A Ordinary Shares the right to have their shares redeemed in connection with the Company’s initial business combination or to redeem 100% of the Company’s public shares if the Company does not complete its initial business combination within 24 months from the closing of the IPO or (ii) with respect to any other provisions relating to the rights of holders of the Company’s Class A Ordinary Shares, and (c) the redemption of the Company’s public shares if the Company has not consummated its business combination within 24 months from the closing of the IPO, subject to applicable law.

An audited balance sheet as of September 21, 2020 reflecting receipt of the Offering Proceeds has been issued by the Company and is included as Exhibit 99.1 to this Current Report on Form 8-K.

(d) Exhibits

SIGNATURES

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.

2