Curbline Properties Corp (CURB) insider trading
Recent insider transactions reported to the SEC on Form 4 — directors and officers buying or selling their own company’s stock. Sourced directly from public SEC filings, latest filed Sep 16, 2026.
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- Filings shown
- 14
- Open-market buys
- 0
- Open-market sells
- 21
Counts cover the 14 most recent Form 4 filings Tradune holds for CURB (filed Jul 31 – Sep 16, 2026). No completed check of CURB's Form 4 list on SEC EDGAR is on record yet; the latest CURB filing Tradune holds was filed Sep 16, 2026. This is not guaranteed to be the complete record — see CURB's full Form 4 filing history on SEC EDGAR.
Open-market activity, last 90 days
Purchases (Form 4 code P) and sales (code S) on the 14 filings Tradune holds for CURB filed Jul 31 – Sep 16, 2026. Grants, exercises, tax withholding and the other Form 4 transaction codes are left out.
21 open-market sales by Rule 10b5-1 checkbox
- On filings with the 10b5-1 box checked
- 0 sales· 0 sh
- checkbox disclosed
- On filings with the box not checked
- 21 sales· 1,451,090 sh
- not proof that no plan exists
- Not comparable
- 0 sales· 0 sh
- filed before Apr 1, 2023, or no checkbox value in the filing data
Counts are Form 4 lines as filed. The checkbox is one per filing, so every sale on a filing with the box checked is counted there even if only some of its transactions were under a plan; it records what the filer disclosed, and the three categories are not a judgement about why a sale was made.
| Insider | Buys | Sells | Shares bought | Shares sold | Value |
|---|---|---|---|---|---|
| Alexander OttoDirector | 0 | 20 | — | 1,395,985 | −$41,904,390 |
| Conor FennertyEVP, CFO & Treasurer | 0 | 1 | — | 55,105 | −$1,674,200 |
Value = shares × the price reported on each Form 4 (+ purchases, − sales); every open-market line in this window disclosed a price.
Summarises ~90 days of public SEC Form 4 activity — more distinct buyers, officer involvement and net buying score higher. A description of filing activity, not a rating or buy signal. How this score is computed →
How to read this: an open-market purchase (Form 4 code P) is a buy at the market price with the insider’s own money, as opposed to a grant, award or option exercise; an open-market sale is code S. When two or more distinct insiders report open-market purchases in the same 90-day window, this site labels that a cluster — a definition, not a forecast; see insider cluster buying. “Held after” is Form 4 Table I column 5; “Change” = shares ÷ holdings before the trade (held after − shares for an acquisition, held after + shares for a disposition).
Insider Buying at CURB
No open-market insider purchases (Form 4 code P) were reported for CURB in the trailing 90 days. The filings below may include other transaction types — sales, grants, option exercises, and tax withholding — shown for completeness; they are not open-market purchases.
Recent Form 4 filings
Source: SEC EDGAR Form 4 · transaction codes explained
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 839 | $29.52 | 6,550,075 | −0.0% | Sep 14, 2026 |
† change in this filer’s own reported holding line (Form 4 Table I, col. 5), not of total company ownership; small prior holdings produce large percentages, so under 100 shares the prior holding is shown instead.
“10b5-1 box checked” = the filer checked the Form 4 box stating that a transaction on the filing was made under a plan intended to satisfy Rule 10b5-1(c); “10b5-1 box not checked” = the box was left blank, which does not prove that no plan exists. The box applies to Form 4s filed from April 1, 2023; older filings, and boxes we could not read, carry no tag. What the 10b5-1 box means.
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 2,472 | $29.08 | 151,437 | −1.6% | Sep 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Tax withholding | 2,472 | $29.08 | 180,717 | −1.3% | Sep 15, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 2,344 | $29.51 | 6,550,914 | −0.0% | Sep 10, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 33,112 | $29.59 | 6,553,258 | −0.5% | Sep 9, 2026 |
| Open-market sale 10b5-1 box not checked | 221,812 | $29.68 | 6,586,370 | −3.3% | Sep 8, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 100 | $30.02 | 6,808,182 | −0.0% | Sep 1, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 3,600 | $30.05 | 6,808,282 | −0.1% | Aug 31, 2026 |
| Open-market sale 10b5-1 box not checked | 110,144 | $30.11 | 6,811,882 | −1.6% | Aug 28, 2026 |
| Open-market sale 10b5-1 box not checked | 500 | $30.00 | 6,922,026 | −0.0% | Aug 27, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 134,868 | $30.17 | 6,922,526 | −1.9% | Aug 26, 2026 |
| Open-market sale 10b5-1 box not checked | 174,293 | $30.12 | 7,057,394 | −2.4% | Aug 25, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 1,206 | $30.10 | 7,231,687 | −0.0% | Aug 19, 2026 |
| Open-market sale 10b5-1 box not checked | 32,927 | $30.02 | 7,232,893 | −0.5% | Aug 18, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 9,173 | $30.04 | 7,265,820 | −0.1% | Aug 17, 2026 |
| Open-market sale 10b5-1 box not checked | 136,226 | $30.25 | 7,274,993 | −1.8% | Aug 14, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 135,612 | $30.15 | 7,411,219 | −1.8% | Aug 13, 2026 |
| Open-market sale 10b5-1 box not checked | 96,331 | $30.06 | 7,546,831 | −1.3% | Aug 12, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 20,475 | $29.76 | 7,643,162 | −0.3% | Aug 7, 2026 |
| Open-market sale 10b5-1 box not checked | 109,366 | $29.79 | 7,663,637 | −1.4% | Aug 6, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 134,269 | $30.11 | 7,773,003 | −1.7% | Aug 5, 2026 |
| Open-market sale 10b5-1 box not checked | 38,788 | $30.17 | 7,907,272 | −0.5% | Aug 4, 2026 |
| Transaction | Shares | Price | Held after | Change† | Date |
|---|---|---|---|---|---|
| Open-market sale 10b5-1 box not checked | 55,105 | $30.38 | 153,909 | −26% | Jul 30, 2026 |
Insider filings reported around the same time
Other companies whose most recent Form 4 was filed closest to CURB's (Sep 16, 2026).
Frequently asked about CURB insider activity
How many insiders bought CURB stock in the last 90 days?
No open-market purchases (Form 4 code P) of CURB shares were reported by Curbline Properties Corp insiders in the trailing 90 days. The 14 filings shown on this page cover other transaction types — sales, grants, option exercises, and tax withholding.
Who filed the most recent Form 4 for CURB?
The most recent Form 4 on this page was filed by Alexander Otto (Director) on Sep 16, 2026, reporting 1 transaction. The original document is linked from the filing list above on SEC EDGAR. Amended filings (Form 4/A) may later revise reported figures.
What was the largest open-market CURB insider sale shown?
The largest open-market sale among the filings shown was 221,812 CURB shares at $29.68 (about $6,583,380) by Alexander Otto (Director) on Sep 8, 2026. Value is shares × the price reported on the Form 4; its Rule 10b5-1 box is not checked.
New to Form 4s? The transaction codes, the 90-day window and the 0–100 score are defined on the insider-activity score methodology page.
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Track CURB insider filings free →This score summarizes SEC Form 4 filing activity over the trailing 90 days. It is descriptive, not predictive — not a rating, recommendation, or investment advice. Data: SEC EDGAR (public domain), as filed; amendments may revise figures. Tradune is not a registered investment adviser.
Data as filed; amended filings (Form 4/A) may revise figures. Sales may occur under prearranged Rule 10b5-1 trading plans.