SUN COMMUNITIES INC — Director's Dealing 2025

Dec 10, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SUN COMMUNITIES INC (SUI)
CIK: 0000912593
Period of Report: 2025-12-09

Reporting Person: SHIFFMAN GARY A (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-09	COMMON STOCK, $0.01 PAR VALUE	M	156875	—	Acquired	156875	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-09	COMMON OPERATING PARTNERSHIP UNITS	$0	M	156875	Disposed		COMMON STOCK, $0.01 PAR VALUE (156875)	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
COMMON STOCK, $0.01 PAR VALUE	881175	Direct
COMMON STOCK, $0.01 PAR VALUE	6278	Indirect
COMMON STOCK, $0.01 PAR VALUE	86800	Indirect

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
COMMON OPERATING PARTNERSHIP UNITS	$0		COMMON STOCK, $0.01 PAR VALUE (576222)	576222	Indirect

Footnotes

F1: This transaction represents the conversion of Common Operating Partnership Units of Sun Communities Operating Limited Partnership (the "Operating Partnership") reported in Table II into Common Stock of the Issuer reported in Table I. The Reporting Person is a trustee and a beneficiary of the irrevocable trust that owns these securities. The Reporting Person disclaims beneficial ownership of the securities held by the trust except to the extent of his pecuniary interest therein. This conversion was completed for tax planning reasons.

F2: Owned by an irrevocable trust of which the Reporting Person is a trustee and a beneficiary. The Reporting Person disclaims beneficial ownership of the securities held by the trust except to the extent of his pecuniary interest therein.

F3: The Common Operating Partnership Units of the Operating Partnership are convertible into Common Stock of the Issuer at any time on a one-for-one basis and have no expiration date.

F4: Owned by certain limited liability companies of which the Reporting Person is a member and a manager. The Reporting Person disclaims beneficial ownership of the securities held by these limited liability companies except to the extent of his pecuniary interest therein.