Insider Transactions Reported by 22 Insiders of SUN COMMUNITIES INC

Symbol: SUI on NYSE
Location: Southfield, MI

Key facts

SUI - SUN COMMUNITIES INC has 22 insiders with reported activity on this page.
Net insider value flow over the last year: -$21,359,370.
Recent transaction rows are available for direct filing-level review.

Change

Buy value: $432,433; sell value: $21,791,803.
Net share flow: -171,210.

Research use

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Net insider flow leans to selling over the last 12 months. Net value: -$21,359,370.

Buys

$432,433

Shares: 3,665

Insiders: 1

Sells

$21,791,804

Shares: 174,875

Insiders: 2

Net

-$21,359,370

Shares: -171,210

Insiders: -1

Window (months)	Buy shares	Sell shares	Buy $	Sell $	Net $
0-3	0	14,000	$0	$1,908,078	-$1,908,078
3-6	0	156,875	$0	$19,378,769	-$19,378,769
6-9	0	4,000	$0	$504,957	-$504,957
9-12	3,665	0	$432,433	$0	+$432,433

SUN COMMUNITIES INC executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Gary A. Shiffman	Director	$120,618,346	-$19,378,769	-14%	Mixed	05 Feb 2026
Karen Dearing	EVP - Special Projects	$21,567,505			Mixed	20 Mar 2023
Arthur A. Weiss	Director	$16,253,712			Mixed	18 Jan 2024
Charles D. Young	CEO & Director, Director	$9,600,175			Mixed	27 Mar 2026
John B. McLaren	President and COO	$9,497,329			Mixed	27 Mar 2026
Aaron Weiss	EVP, Chief Investment Officer	$8,039,156			Mixed	27 Mar 2026
Marc Farrugia	EVP & Chief Admin. Officer	$7,870,018			Mixed	27 Mar 2026
Baxter R. Underwood	CEO - Safe Harbor Marinas, LLC	$7,495,367			Mixed	28 Mar 2025
Bruce Thelen	Evp, Coo	$7,048,607			Mixed	09 Mar 2026
Fernando Castro-Caratini	EVP, CFO, Sec. & Treas.	$4,349,779			Mixed	09 Mar 2026
Brian M. Hermelin	Director	$3,502,644			Mixed	05 Feb 2026
Stephanie W. Bergeron	Director	$3,274,488			Mixed	08 Jan 2025
Meghan G. Baivier	Director	$2,401,494			Mixed	05 Feb 2026
Clunet R. Lewis	Director	$2,287,280	-$2,413,035	-51%	Filing P/S	05 Mar 2026
Ronald A. Klein	Director	$2,244,774			Mixed	18 Jan 2024
Brian P. Loftus	SVP, Chief Accounting Officer	$1,997,279			Mixed	12 Mar 2026
Jeff T. Blau	Director	$1,342,843	+$432,433	+47%	Mixed	05 Feb 2026
Tonya Allen	Director	$1,289,487			Mixed	05 Feb 2026
Jerome W. Ehlinger	Director	$643,578			Mixed	05 Feb 2026
Craig Leupold	Director	$640,908			Mixed	05 Feb 2026
Mark A. Denien	Director	$147,420			Mixed	05 Feb 2026
Mark E. Patten	EVP, CFO, Sec. & Treas.	$0			Mixed	04 Feb 2026

Top shareholders of SUN COMMUNITIES INC (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
DODGE & COX	13F 13D/G	Company	11% from 13D/G	14,266,030	$1,796,949,139	—	31 Mar 2026	13F 13D/G
COHEN & STEERS, INC.	13D/G 13F	Company	11%	13,101,349	$1,696,886,722	+$248,426,095	30 Apr 2026	13D/G 13F
BlackRock, Inc.	13F 13D/G	Company	7.8% from 13D/G	12,681,528	$1,597,365,324	—	31 Mar 2026	13F 13D/G
NORGES BANK	13D/G	—	4.9%	6,079,930	$753,364,126	$0	31 Dec 2025	13D/G
PRICE T ROWE ASSOCIATES INC /MD/	13F 13D/G	Company · T. Rowe Price Associates, Inc.	4.5% from 13D/G	5,529,426	$696,489,000	—	31 Mar 2026	13F 13D/G
FMR LLC	13D/G 13F	Company	4.2%	5,269,273	$679,736,272	-$340,627,209	30 Sep 2025	13D/G 13F
Gary A. Shiffman	3/4/5	Director	0.79%	975,870	$120,618,346	-$19,378,769	05 Feb 2026	3/4/5
Bruce Thelen	3/4/5	EVP, COO	0.04%	54,687	$7,048,607	—	09 Mar 2026	3/4/5
Fernando Castro-Caratini	3/4/5	EVP, CFO, Sec. & Treas.	0.03%	33,748	$4,349,779	—	09 Mar 2026	3/4/5
Brian M. Hermelin	3/4/5	Director	0.02%	28,327	$3,502,644	—	05 Feb 2026	3/4/5
Meghan G. Baivier	3/4/5	Director	0.02%	19,417	$2,401,494	—	05 Feb 2026	3/4/5
Clunet R. Lewis	3/4/5	Director	0.01%	16,817	$2,287,280	-$2,413,035	05 Mar 2026	3/4/5
Brian P. Loftus	3/4/5	SVP, Chief Accounting Officer	0.01%	15,496	$1,997,279	—	12 Mar 2026	3/4/5
Jeff T. Blau	3/4/5	Director	0.01%	10,882	$1,342,843	+$432,433	05 Feb 2026	3/4/5
Tonya Allen	3/4/5	Director	0.01%	10,426	$1,289,487	—	05 Feb 2026	3/4/5
VANGUARD PORTFOLIO MANAGEMENT LLC	13F	Company	8.3%	10,168,892	$1,280,873,636	—	31 Mar 2026	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	4.7%	5,842,918	$735,973,951	—	31 Mar 2026	13F
VANGUARD CAPITAL MANAGEMENT LLC	13F	Company	4.4%	5,453,074	$686,869,201	—	31 Mar 2026	13F
STATE STREET CORP	13F	Company	4.2%	5,213,224	$662,436,611	—	31 Mar 2026	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	1.9%	2,385,877	$299,703,114	—	31 Mar 2026	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.5%	1,812,301	$228,279,844	—	31 Mar 2026	13F
Daiwa Securities Group Inc.	13F	Company	1.4%	1,768,350	$222,741,366	—	31 Mar 2026	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.2%	1,526,108	$192,228,564	—	31 Mar 2026	13F
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	13F	Company	1.2%	1,504,752	$189,538,562	—	31 Mar 2026	13F
DEUTSCHE BANK AG\	13F	Company	1%	1,235,421	$155,613,629	—	31 Mar 2026	13F
Nuveen, LLC	13F	Company	0.91%	1,124,291	$141,615,695	—	31 Mar 2026	13F
Legal & General Group Plc	13F	Company	0.87%	1,076,405	$135,583,972	—	31 Mar 2026	13F
NORTHERN TRUST CORP	13F	Company	0.84%	1,038,383	$130,794,724	—	31 Mar 2026	13F
CANADA PENSION PLAN INVESTMENT BOARD	13F	Company	0.84%	1,030,991	$129,863,626	—	31 Mar 2026	13F
Russell Investments Group, Ltd.	13F	Company	0.79%	974,982	$122,809,131	—	31 Mar 2026	13F
JPMORGAN CHASE & CO	13F	Company	0.73%	893,921	$112,812,862	—	31 Mar 2026	13F
MORGAN STANLEY	13F	Company	0.65%	806,642	$101,604,707	—	31 Mar 2026	13F
SEI INVESTMENTS CO	13F	Company	0.63%	771,978	$97,238,328	—	31 Mar 2026	13F
VANGUARD FIDUCIARY TRUST CO	13F	Company	0.59%	730,287	$91,986,951	—	31 Mar 2026	13F
Bank of New York Mellon Corp	13F	Company	0.55%	682,504	$85,968,183	—	31 Mar 2026	13F
HSBC HOLDINGS PLC	13F	Company	0.49%	601,525	$75,822,594	—	31 Mar 2026	13F
CITADEL ADVISORS LLC	13F	Company	0.47%	579,938	$73,048,991	—	31 Mar 2026	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.46%	568,513	$71,609,960	—	31 Mar 2026	13F
CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC	13F	Company	0.44%	536,746	$67,608,526	—	31 Mar 2026	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	0.41%	509,346	$64,157,222	—	31 Mar 2026	13F
Sumitomo Mitsui Trust Group, Inc.	13F	Company	0.35%	435,388	$54,841,472	—	31 Mar 2026	13F
Qube Research & Technologies Ltd	13F	Company	0.35%	427,964	$53,906,345	—	31 Mar 2026	13F
BALYASNY ASSET MANAGEMENT L.P.	13F	Company	0.34%	421,928	$53,146,051	—	31 Mar 2026	13F
GW&K Investment Management, LLC	13F	Company	0.32%	392,920	$49,493,000	—	31 Mar 2026	13F
Swiss National Bank	13F	Company	0.29%	362,860	$45,705,846	—	31 Mar 2026	13F
Vision Capital Corp	13F	Company	0.27%	330,796	$41,667,064	—	31 Mar 2026	13F
AMERICAN CENTURY COMPANIES INC	13F	Company	0.26%	325,196	$40,961,688	—	31 Mar 2026	13F
Amundi	13F	Individual	0.25%	312,099	$39,311,991	—	31 Mar 2026	13F
APG Asset Management US Inc.	13F	Company	0.25%	307,048	$39,111,774	—	31 Mar 2026	13F
UBS Group AG	13F	Company	0.24%	297,862	$37,518,698	—	31 Mar 2026	13F

Recent Insider Transactions by Companies or Individuals for SUN COMMUNITIES INC

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
Charles D. Young	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	22.7%			14,334	77,477	27 Mar 2026	Direct
Charles D. Young	SUI	PERFORMANCE RIGHT	Award				28,151	28,151	27 Mar 2026	Direct
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	10.3%			4,778	51,274	27 Mar 2026	Direct
Marc Farrugia	SUI	PERFORMANCE RIGHT	Award				9,382	9,382	27 Mar 2026	Direct
Aaron Weiss	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	8.82%			5,256	64,879	27 Mar 2026	Direct
Aaron Weiss	SUI	PERFORMANCE RIGHT	Award				10,321	10,321	27 Mar 2026	Direct
John B. McLaren	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	3.22%			2,389	76,637	27 Mar 2026	Direct
John B. McLaren	SUI	PERFORMANCE RIGHT	Award				4,690	4,690	27 Mar 2026	Direct
John B. McLaren	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.16%			-872	74,248	17 Mar 2026	Direct
Brian P. Loftus	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	50.3%			5,185	15,496	12 Mar 2026	Direct
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	46%			296	939	12 Mar 2026	Owned by spouse
Fernando Castro-Caratini	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-18.9%			-7,858	33,748	09 Mar 2026	Direct
Brian P. Loftus	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.64%			-172	10,311	09 Mar 2026	Direct
Bruce Thelen	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.01%			-560	54,687	09 Mar 2026	Direct
Aaron Weiss	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-2.2%			-1,344	59,623	09 Mar 2026	Direct
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-2.87%			-19	643	09 Mar 2026	Owned by spouse
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.19%			-560	46,496	09 Mar 2026	Direct
Clunet R. Lewis	SUI	COMMON STOCK, $0.01 PAR VALUE	Sale	-100%	$435,680	$136.15	-3,200	0	05 Mar 2026	By Wife's IRA
Clunet R. Lewis	SUI	COMMON STOCK, $0.01 PAR VALUE	Sale	-18.4%	$516,838	$136.01	-3,800	16,817	05 Mar 2026	Direct
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.34%			-9	662	05 Mar 2026	Owned by spouse
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.46%			-699	47,056	05 Mar 2026	Direct
Aaron Weiss	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.86%			-1,154	60,967	04 Mar 2026	Direct
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-2.75%			-19	671	04 Mar 2026	Owned by spouse
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.16%			-560	47,755	04 Mar 2026	Direct
Bruce Thelen	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.14%			-635	55,247	04 Mar 2026	Direct
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-2.4%			-17	690	02 Mar 2026	Owned by spouse
Clunet R. Lewis	SUI	COMMON STOCK, $0.01 PAR VALUE	Sale	-25.4%	$955,560	$136.51	-7,000	20,617	27 Feb 2026	Direct
Aaron Weiss	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-2.4%			-1,529	62,121	24 Feb 2026	Direct
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.12%			-8	707	24 Feb 2026	Owned by spouse
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.89%			-932	48,315	24 Feb 2026	Direct
Bruce Thelen	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.8%			-1,025	55,882	24 Feb 2026	Direct
John B. McLaren	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-1.15%			-872	75,120	23 Feb 2026	Direct
Bruce Thelen	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-0.55%			-317	56,907	11 Feb 2026	Direct
Brian M. Hermelin	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	6.29%			1,617	27,317	05 Feb 2026	Direct
Tonya Allen	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	18.4%			1,617	10,426	05 Feb 2026	Direct
Craig Leupold	SUI	DEFERRED RESTRICTED COMMON STOCK RIGHTS	Award	44.9%			1,617	5,217	05 Feb 2026	Direct
Gary A. Shiffman	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	0.18%			1,617	882,792	05 Feb 2026	Direct
Jeff T. Blau	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	28.9%			1,617	7,217	05 Feb 2026	Direct
Meghan G. Baivier	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	9.08%			1,617	19,417	05 Feb 2026	Direct
Clunet R. Lewis	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	6.22%			1,617	27,617	05 Feb 2026	Direct
Jerome W. Ehlinger	SUI	COMMON STOCK, $0.01 PAR VALUE	Award	101.1%			1,617	3,217	05 Feb 2026	Direct
Mark A. Denien	SUI	DEFERRED RESTRICTED COMMON STOCK RIGHTS	Award				1,617	1,617	05 Feb 2026	Direct
Mark E. Patten	SUI	COMMON STOCK, $0.01 PAR VALUE	Disposed to Issuer	-100%			-28,892	0	04 Feb 2026	Direct
Mark E. Patten	SUI	COMMON STOCK, $0.01 PAR VALUE	Award				28,892	28,892	05 Jan 2026	Direct
Aaron Weiss	SUI	COMMON STOCK, $0.01 PAR VALUE	Disposed to Issuer	-12.4%			-9,000	63,650	01 Jan 2026	Direct
Bruce Thelen	SUI	COMMON STOCK, $0.01 PAR VALUE	Disposed to Issuer	-15.1%			-10,200	57,224	01 Jan 2026	Direct
Marc Farrugia	SUI	COMMON STOCK, $0.01 PAR VALUE	Disposed to Issuer	-10.9%			-6,000	49,247	01 Jan 2026	Direct
Brian P. Loftus	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-2.36%			-253	10,483	30 Dec 2025	Direct
Fernando Castro-Caratini	SUI	COMMON STOCK, $0.01 PAR VALUE	Tax liability	-31.4%			-19,008	41,606	30 Dec 2025	Direct
Gary A. Shiffman	SUI	COMMON STOCK, $0.01 PAR VALUE	Sale	-100%	$19,378,769	$123.53	-156,875	0	17 Dec 2025	Owned by irrevocable trust.

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