GARY A. SHIFFMAN - 09 Dec 2025 Form 4 Insider Report for SUN COMMUNITIES INC (SUI)

Role: Director
Signature: Gary A. Shiffman
Issuer symbol: SUI
Transactions as of: 09 Dec 2025
Transactions value $: $0
Form type: 4
Filing time: 10 Dec 2025, 17:57:28 UTC
Previous filing: 21 Mar 2025
Next filing: 18 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
SHIFFMAN GARY A	Director	27777 FRANKLIN ROAD, SUITE 300, SOUTHFIELD	Gary A. Shiffman	10 Dec 2025	0001171077

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SUI	COMMON STOCK, $0.01 PAR VALUE	Options Exercise	$0	+157K		$0.00	157K	09 Dec 2025	Owned by irrevocable trust.	F1
holding	SUI	COMMON STOCK, $0.01 PAR VALUE						881K	09 Dec 2025	Direct
holding	SUI	COMMON STOCK, $0.01 PAR VALUE						6.28K	09 Dec 2025	Owned by spouse
holding	SUI	COMMON STOCK, $0.01 PAR VALUE						86.8K	09 Dec 2025	Owned by irrevocable trust.	F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	SUI	COMMON OPERATING PARTNERSHIP UNITS	Options Exercise	$0	-157K	-100%	$0.00	0	09 Dec 2025	COMMON STOCK, $0.01 PAR VALUE	157K	$0.00	Owned by irrevocable trust	F1, F3
holding	SUI	COMMON OPERATING PARTNERSHIP UNITS						576K	09 Dec 2025	COMMON STOCK, $0.01 PAR VALUE	576K	$0.00	Owned by certain LLC's	F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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.