SEC Form 4
Sun Communities, Inc (SUI) insider trading
In the 12 months to Oct 23, 2026, 3 SUI insiders reported open-market sales of $27.7M across 6 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $27.7M
- 6 filings · 3 insiders
- Open-market purchases
- $0
- 0 filings
Who traded SUI, and when
- Sale
SUI daily close from Oct 23, 2025 to Oct 23, 2026, between $110.00 and $137.18, last $120.24. 6 sale and 0 purchase filings by 3 insiders, marked at their filing dates. Gary A. Shiffman, Director: sold $22.4M across 2 filings, first filed Dec 18, 2025, last Jun 25, 2026. Fernando Castro-Caratini, EVP, CFO, Sec. & Treas.: sold $3.0M across 1 filing, first filed May 27, 2026, last May 27, 2026. Clunet R. Lewis, Director: sold $2.4M across 3 filings, first filed Nov 12, 2025, last Mar 6, 2026.
Largest mark · tap a row for others
Gary A. Shiffman · Director
Sale $19,378,769
156,875 shares at $123.53 avg
Filed Dec 18, 2025 · traded Dec 17
Close on filing date $122.93
Gary A. Shiffman · Director
Director
$22.4M soldFernando Castro-Caratini · EVP, CFO, Sec. & Treas.
EVP, CFO, Sec. & Treas.
$3.0M soldClunet R. Lewis · Director
Director
$2.4M soldHas Sun Communities, Inc's CEO sold stock?
No. Charles D. Young (CEO) made no open-market sales filed as CEO in the last 12 months.
Open-market trades
6 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Gary A. Shiffman | Director | $22.4M | — | 2 | — | |
| Fernando Castro-Caratini | EVP, CFO, Sec. & Treas. | $3.0M | — | 1 | — | |
| Clunet R. Lewis | Director | $2.4M | — | 3 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Gary A. Shiffman Director | Sale | 25,031 | $119.96 | $3.0M | 857,761 | |
traded | Fernando Castro-Caratini EVP, CFO, Sec. & Treas. | Sale | 23,750 | $124.43 | $3.0M | 12,487 | |
traded | Clunet R. Lewis Director | Sale | 7,000 | $136.07 | $952.5K | Multiple accounts | |
traded | Clunet R. Lewis Director | Sale | 7,000 | $136.51 | $955.6K | 20,617 | |
traded | Gary A. Shiffman Director | Sale | 156,875 | $123.53 | $19.4M | 0 | |
traded | Clunet R. Lewis Director | Sale | 4,000 | $126.24 | $505.0K | 26,000 |
GET /stocks/filings/vX/form-4?tickers=SUI&filing_date.gte=2025-10-23&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"SUI"
],
"issuer_cik": "0000912593",
"owner_cik": "0001171077",
"accession_number": "0000912593-26-000203",
"form_type": "4",
"filing_date": "2026-06-25",
"period_of_report": "2026-06-24",
"issuer_name": "SUN COMMUNITIES INC",
"issuer_trading_symbol": "SUI",
"owner_name": "SHIFFMAN GARY A",
"is_director": true,
"is_officer": false,
"is_ten_percent_owner": false,
"is_other": false,
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "COMMON STOCK, $0.01 PAR VALUE",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-06-24",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 25031,
"transaction_price_per_share": 119.96,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 857761,
"transaction_value": 3002718.76,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The price reported in Column 4 is a volume weighted average price. These shares were sold in multiple transactions with prices ranging from $119.75 to $120.05, inclusive. The reporting person undertakes to provide to Sun Communities, Inc., any security holder of Sun Communities, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."
}
]
},
{
"tickers": [
"SUI"
],
"issuer_cik": "0000912593",
"owner_cik": "0001917872",
"accession_number": "0000912593-26-000190",
"form_type": "4",
"filing_date": "2026-05-27",
"period_of_report": "2026-05-26",
"issuer_name": "SUN COMMUNITIES INC",
"issuer_trading_symbol": "SUI",
"owner_name": "Castro-Caratini Fernando",
"is_director": false,
"is_officer": true,
"is_ten_percent_owner": false,
"is_other": false,
"officer_title": "EVP, CFO, Sec. & Treas.",
"security_type": "non_derivative",
"record_type": "transaction",
"security_title": "COMMON STOCK, $0.01 PAR VALUE",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-05-26",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2489,
"transaction_price_per_share": 124.97,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 9998,
"transaction_value": 311050.33,
"not_subject_to_section_16": false,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F2",
"description": "The price reported in Column 4 is a volume weighted average price. These shares were sold in multiple transactions with prices ranging from $124.96 to $125.00, inclusive. The reporting person undertakes to provide to Sun Communities, Inc., any security holder of Sun Communities, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."
}
]
}
]
}
// trimmed to 2 resultsThe response includes every Form 4 record; this page keeps open-market purchases and sales on common stock and removes duplicate joint-filer rows.
Other insider activity (not market trades) · 52 records
- Option exercises1 record
- Tax withholding29 records
- Grants and awards16 records
- Gifts2 records
- Other4 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
Build this yourself
This page joins two Massive endpoints: Form 4 filings and daily prices. Ask an agent to watch for new filings:
Using the Massive API (massive.com/docs/llms.txt), check Form 4 filings for SUI every day with transaction_code=P and tell me when an insider files an open-market purchase, with their role, shares, price and the filing link.
How to read this page
- Open-market purchase or sale
- A buy or sell of the company's stock at market price. Grants, option exercises, shares withheld for tax, gifts and employee stock plan purchases are listed separately and not counted.
- Filing date
- Insiders have two business days to report a trade. Totals and the chart use the filing date, when the trade became public.