SCHEDULE 13G/A 0000950170-25-035277 0000200217 XXXXXXXX LIVE 2 Common Stock 06/30/2025 0000912593 SUN COMMUNITIES, INC 866674104 27777 Franklin Rd, Suite 300 Southfield MI 48034 Rule 13d-1(b) Dodge & Cox CA 13635560 0 14198760 0 14198760 N 11.1 IA SUN COMMUNITIES, INC 27777 Franklin Rd, Suite 300, Southfield, Michigan 48034 Dodge & Cox 555 California Street 40th Floor, San Francisco, CA 94104 California, USA N IA 14,198,760 11.1 13,635,560 0 14,198,760 0 Y N The clients of Dodge & Cox, including investment companies registered under the Investment Company Act of 1940 and other managed accounts, have the right to receive or power to direct the receipt of dividends from, and the proceeds from the sale of, SUN COMMUNITIES, INC. Dodge & Cox Stock Fund, an investment company registered under the Investment Company Act of 1940, has an interest of 10,679,800 or 8.4%, of the class of securities reported herein. Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. Dodge & Cox /S/ Katherine M. Primas 08/13/2025