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(Registrant’s telephone number, including area code)

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:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

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 September 30, 2024, Sun Communities Operating Limited Partnership (“SCOLP”), the operating subsidiary of Sun Communities, Inc. (the “Company”), issued 243,273 common OP units (the “Common Units”) at an issuance price of $129.50 per unit. All of the Common Units were issued as consideration for the initial holder’s contribution of certain assets to SCOLP.

The issuance by SCOLP of the Common Units was made in reliance upon the exemption from registration afforded by Section 4(a)(2) of the Securities Act of 1933, as amended.

Each Common Unit is exchangeable at any time (subject to certain limited exceptions) at the holder’s option for one share of common stock (the “Common Stock”) of the Company.

Notwithstanding the foregoing exchange rights, the initial holder of the Common Units has agreed not to sell or otherwise dispose of the shares of the Common Stock issuable upon the exchange of such securities for a period of six months after September 30, 2024, subject to certain limited exceptions.

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.