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  4. [Form 4] Curbline Properties Corp. Insider Trading Activity

Curbline director sells 309K shares around $30

Curbline Properties Corp. (CURB) director Otto Alexander reported two open-market sales of the company’s common stock.

Filing Impact
(Very High)
Filing Sentiment
(Very Negative)
Form Type
4

Rhea-AI Filing Summary

Curbline Properties Corp. (CURB) director Otto Alexander reported two open-market sales of the company’s common stock. On August 25, 2026, he sold 174,293 shares at a weighted average price of $30.12, and on August 26, 2026, he sold 134,868 shares at a weighted average price of $30.17. In each case, the reported price is a weighted average for multiple same-way trades executed by a broker-dealer within a price range of $30.00 to $30.33 per share.

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Insights

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Insider Otto Alexander
Role Director
Sold 309,161 shs ($9.32M)
Type Security Shares Price Value
Sale Common Stock F1, F3 134,868 $30.17 $4.07M
Sale Common Stock F1, F2 174,293 $30.12 $5.25M
Holdings After Transaction: Common Stock — 6,922,526 shares (Direct)
Footnotes (3)
  1. F1. 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.
  2. F2. Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.33.
  3. F3. Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.33.
Shares sold on 2026-08-25 174,293 shares of Common Stock Open-market sale coded S on August 25, 2026
Weighted average price on 2026-08-25 $30.12 per share Multiple same-way open market sale transactions within $30.00–$30.33 range
Shares sold on 2026-08-26 134,868 shares of Common Stock Open-market sale coded S on August 26, 2026
Weighted average price on 2026-08-26 $30.17 per share Multiple same-way open market sale transactions within $30.00–$30.33 range
Total shares sold 309,161 shares Sum of reported sales on August 25 and 26, 2026
Price range for trades $30.00–$30.33 per share Range of prices for trades aggregated into each weighted average sale price
weighted average sale price financial
"Reflects the weighted average sale price."
open market sale transactions financial
"multiple same-way open market sale transactions on the same day"
broker-dealer financial
"through a sale order executed by a broker-dealer"
A broker-dealer is a licensed firm or individual that both executes trades on behalf of clients (acting as a broker) and buys or sells securities for its own account (acting as a dealer). Investors care because broker-dealers provide the plumbing of markets — they place orders, hold or move cash and securities, offer research or advice, and their stability and fees directly affect trade execution, costs, and the safety of client funds; think of them as a combined travel agent and taxi for your investments.
Rule 10b5-1 regulatory
"aff_10b5_one is the filing's document-level Rule 10b5-1 checkbox"
Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

Who is the insider trading CURB stock in this Form 4?
The Form 4 reports that director Otto Alexander of Curbline Properties Corp. (CURB) executed the disclosed transactions in the company’s common stock.

How many CURB shares did Otto Alexander sell in this filing?
Otto Alexander reported selling a total of 309,161 shares of Curbline Properties Corp. common stock, consisting of 174,293 shares on August 25, 2026 and 134,868 shares on August 26, 2026.

At what prices were the CURB shares sold in the reported transactions?
The sales were reported at weighted average prices: $30.12 per share on August 25, 2026 and $30.17 per share on August 26, 2026. Footnotes state each day’s trades occurred within a price range of $30.00 to $30.33 per share.

Were the CURB stock sales made in the open market?
Yes. Each transaction is coded “S”, described as a sale in open market or private transaction, and the footnotes state they were effected through a broker-dealer via multiple same-way open market sale transactions.

Does this Form 4 indicate a Rule 10b5-1 trading plan for CURB?
The filing’s Rule 10b5-1 checkbox is not checked and the footnotes do not reference a trading plan, so the reported CURB stock sales are not identified as being made under a Rule 10b5-1 plan.

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SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Otto Alexander
(Last)(First)(Middle)
KG CURA VERMOGENSVERWALTUNG G.M.B.H.&CO.
SASELER DAMM 39 A
(Street)
HAMBURGGERMANYD-22395
(City)(State)(Zip)
GERMANY
(Country)		2. Issuer Name and Ticker or Trading Symbol
Curbline Properties Corp. [ CURB ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/25/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Common Stock08/25/2026S174,293D$30.12(1)(2)7,057,394D
Common Stock08/26/2026S134,868D$30.17(1)(3)6,922,526D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. 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.
2. Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.33.
3. Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.33.
/s/ Frederic Arndts, managing director of KG CURA Vermogensverwaltung G.m.b.H. & Co., For: Alexander Otto08/27/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR