SEC Form 4
Curbline Properties Corp. (CURB) insider trading
In the 12 months to Nov 6, 2026, 3 CURB insiders reported open-market sales of $46.9M across 13 filings; no open-market purchases were filed.
Latest filing · Last 12 months · Source: SEC EDGAR · How we count
- Open-market sales
- $46.9M
- 13 filings · 3 insiders
- Open-market purchases
- $0
- 0 filings
Who traded CURB, and when
- Sale
CURB daily close from Nov 6, 2025 to Nov 6, 2026, between $22.70 and $31.75, last $29.37. 13 sale and 0 purchase filings by 3 insiders, marked at their filing dates. Alexander Otto, Director: sold $41.9M across 11 filings, first filed Aug 6, 2026, last Sep 16, 2026. David R. Lukes, President & CEO: sold $3.3M across 1 filing, first filed Mar 17, 2026, last Mar 17, 2026. Conor Fennerty, EVP, CFO & Treasurer: sold $1.7M across 1 filing, first filed Jul 31, 2026, last Jul 31, 2026.
Largest mark · tap a row for others
Alexander Otto · Director
Filing 1 of 2 within a week · $12,758,289 total
Sale $9,318,673
309,161 shares at $30.14 avg
Filed Aug 27, 2026 · traded Aug 25
Close on filing date $29.87
Alexander Otto · Director
Director
$41.9M soldDavid R. Lukes · President & CEO
President & CEO
$3.3M soldConor Fennerty · EVP, CFO & Treasurer
EVP, CFO & Treasurer
$1.7M soldOpen-market trades
13 filings in the last 12 months| Insider | Role | Sold | Bought | Filings | Pre-arranged (10b5-1) | Last filed |
|---|---|---|---|---|---|---|
| Alexander Otto | Director | $41.9M | — | 11 | — | |
| David R. Lukes | President & CEO | $3.3M | — | 1 | — | |
| Conor Fennerty | EVP, CFO & Treasurer | $1.7M | — | 1 | — |
| Filed | Insider | Type | Shares | Avg price | Value | Held after | Source |
|---|---|---|---|---|---|---|---|
traded | Alexander Otto Director | Sale | 839 | $29.52 | $24.8K | 6,550,075 | |
traded | Alexander Otto Director | Sale | 2,344 | $29.51 | $69.2K | 6,550,914 | |
traded | Alexander Otto Director | Sale | 254,924 | $29.67 | $7.6M | 6,553,258 | |
traded | Alexander Otto Director | Sale | 100 | $30.02 | $3.0K | 6,808,182 | |
traded | Alexander Otto Director | Sale | 114,244 | $30.11 | $3.4M | 6,808,282 | |
traded | Alexander Otto Director | Sale | 309,161 | $30.14 | $9.3M | 6,922,526 | |
traded | Alexander Otto Director | Sale | 34,133 | $30.02 | $1.0M | 7,231,687 | |
traded | Alexander Otto Director | Sale | 145,399 | $30.24 | $4.4M | 7,265,820 | |
traded | Alexander Otto Director | Sale | 231,943 | $30.11 | $7.0M | 7,411,219 | |
traded | Alexander Otto Director | Sale | 129,841 | $29.79 | $3.9M | 7,643,162 | |
traded | Alexander Otto Director | Sale | 173,057 | $30.12 | $5.2M | 7,773,003 | |
traded | Conor Fennerty EVP, CFO & Treasurer | Sale | 55,105 | $30.38 | $1.7M | 153,909 | |
traded | David R. Lukes President & CEO | Sale | 123,412 | $26.82 | $3.3M | 506,597 |
GET /stocks/filings/vX/form-4?tickers=CURB&filing_date.gte=2025-11-06&sort=filing_date.desc&limit=500{
"status": "OK",
"results": [
{
"tickers": [
"CURB",
"CURBw"
],
"issuer_cik": "0002027317",
"owner_cik": "0001462468",
"accession_number": "0001193125-26-393072",
"form_type": "4",
"filing_date": "2026-09-16",
"period_of_report": "2026-09-14",
"issuer_name": "Curbline Properties Corp.",
"issuer_trading_symbol": "CURB",
"owner_name": "Otto Alexander",
"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",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-14",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 839,
"transaction_price_per_share": 29.52,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 6550075,
"transaction_value": 24767.28,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The reporting person effected multiple same-way open market sale transactions on the same day at different prices through a sale order executed by a broker-dealer. The reporting person reported on a single line all such transactions that occurred within a one dollar price range. The reporting person hereby undertakes to provide upon request by the SEC staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares sold at each separate price."
},
{
"id": "F2",
"description": "Reflects the weighted average sale price. The range of prices for such transaction is between $29.50 and $29.56."
}
]
},
{
"tickers": [
"CURB",
"CURBw"
],
"issuer_cik": "0002027317",
"owner_cik": "0001462468",
"accession_number": "0001193125-26-390575",
"form_type": "4",
"filing_date": "2026-09-14",
"period_of_report": "2026-09-10",
"issuer_name": "Curbline Properties Corp.",
"issuer_trading_symbol": "CURB",
"owner_name": "Otto Alexander",
"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",
"transaction_timeliness": "O",
"aff_10b5_one": false,
"transaction_date": "2026-09-10",
"transaction_code": "S",
"equity_swap_involved": false,
"transaction_shares": 2344,
"transaction_price_per_share": 29.51,
"transaction_acquired_disposed": "D",
"shares_owned_following_transaction": 6550914,
"transaction_value": 69171.44,
"direct_or_indirect": "D",
"footnotes": [
{
"id": "F1",
"description": "The reporting person effected multiple same-way open market sale transactions on the same day at different prices through a sale order executed by a broker-dealer. The reporting person reported on a single line all such transactions that occurred within a one dollar price range. The reporting person hereby undertakes to provide upon request by the SEC staff, the issuer, or a shareholder of the issuer, full information regarding the number of shares sold at each separate price."
},
{
"id": "F2",
"description": "Reflects the weighted average sale price. The range of prices for such transaction is between $29.50 and $29.53."
}
]
}
]
}
// 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) · 25 records
- Tax withholding12 records
- Grants and awards5 records
- Gifts8 records
Reported on Form 4 but not purchases or sales in the market, so not counted in the totals above.
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.
Frequently asked questions
Has Curbline Properties Corp.'s CEO sold stock?
Yes. David R. Lukes (CEO) sold 123,412 shares ($3.3M) in Mar 2026.
How current is CURB’s insider data?
These are CURB Form 4 filings from the last year, refreshed daily. The Massive Form 4 API has the full, continuously updated record.
What counts as an open-market buy or sell?
Only purchases and sales at the market price. Option exercises, grants, gifts, and shares withheld for taxes are reported on Form 4 but are left out of the buy and sell totals.
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Track CURB insider trades with your agent
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 CURB 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.
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