UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K/A

(Amendment No. 1)

CURRENT REPORT

Pursuant to Section 13 OR 15(d)

of The Securities Exchange Act of 1934

Date of Report: April 25, 2017

(Date of earliest event reported)

SUN COMMUNITIES, INC.

(Exact name of registrant as specified in its charter)

(248) 208-2500

(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:

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.  ☐

Explanatory Note

On April 26, 2017, Sun Communities, Inc. (the “Company”) filed a Current Report on Form 8-K (the “Original Form 8-K,” and, together with this amendment, the “Form 8-K”) reporting that on April 25, 2017, Sun Communities Operating Limited Partnership (“SCOLP”), as borrower, and the Company, and certain of its subsidiaries, as guarantors, entered into the Second Amended and Restated Credit Agreement (the “Credit Agreement”) with Citibank, N.A. (“Citibank”), as Administrative Agent, Swing Line Lender and L/C Issuer, Citigroup Global Markets Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated and BMO Capital Markets, as Joint Lead Arrangers, and Citigroup Global Markets Inc. and Merrill Lynch, Pierce, Fenner & Smith Incorporated as Joint Bookrunners, and Bank of America, N.A. and Bank of Montreal, as Co-Syndication Agents and Fifth Third Bank, an Ohio Banking Corporation, Regions Bank and RBC Capital Markets as Co-Documentation Agents and the other lenders, PNC Bank, National Association, U.S. Bank National Association, Credit Suisse, Associated Bank, N.A. and Flagstar Bank, FSB. This Form 8-K/A amends the Original Form 8-K to file the Credit Agreement as an exhibit under Item 9.01.

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.

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