Curbline director sells 2,344 shares at $29.51

A CURB director disclosed a modest open-market stock sale while retaining over 6.5 million shares.

Rhea-AI Filing Summary

Curbline Properties Corp. (CURB) director Otto Alexander reported selling 2,344 shares of common stock on September 10, 2026 in an open-market transaction at a weighted average price of $29.51 per share, with individual sale prices ranging from $29.50 to $29.53. After these sales, he directly holds 6,550,914 shares of Curbline Properties Corp. common stock. The filing states that multiple same-way transactions that day were aggregated into a single reported line, and no Rule 10b5-1 trading plan is affirmed.

Insider Trade Summary

Net Seller: 2,344 shares

Net Sell 1 txn

Insider Otto Alexander

Role Director

Sold 2,344 shs ($69K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	2,344	$29.51	$69K

Holdings After Transaction: Common Stock — 6,550,914 shares (Direct)

Footnotes (2)

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 $29.50 and $29.53.

Key Figures

Shares sold: 2,344 shares Weighted average sale price: $29.51 per share Sale price range: $29.50–$29.53 per share +2 more

5 metrics

Shares sold 2,344 shares Open-market sale of CURB common stock on September 10, 2026

Weighted average sale price $29.51 per share Aggregated same-day sale transactions within one-dollar price range

Sale price range $29.50–$29.53 per share Range of prices for the September 10, 2026 sale transactions

Shares held after transaction 6,550,914 shares Director’s direct CURB common stock holdings following the sale

Net shares sold 2,344 shares Net selling activity reported in this Form 4

Key Terms

weighted average sale price, open market sale transactions, broker-dealer

3 terms

weighted average sale price financial

"Reflects the weighted average sale price. The range of prices..."

open market sale transactions market

"The reporting person effected multiple same-way open market sale..."

broker-dealer financial

"sale transactions on the same day at different prices 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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did CURB director Otto Alexander report?

Otto Alexander reported an open-market sale of 2,344 CURB common shares on September 10, 2026, executed through a broker-dealer and disclosed as a single aggregated transaction within a one-dollar price range.

At what price were the CURB shares sold in this Form 4 filing?

The shares were sold at a weighted average price of $29.51 per share, with individual sale prices in a range from $29.50 to $29.53, according to the transaction footnote.

How many Curbline Properties Corp. (CURB) shares does the director hold after the sale?

Following the reported sale, Otto Alexander directly holds 6,550,914 shares of Curbline Properties Corp. common stock, as stated in the filing.

Was the CURB insider sale made under a Rule 10b5-1 trading plan?

The filing’s Rule 10b5-1 checkbox is not affirmed, and the footnotes describe ordinary open-market broker-dealer sales, so no Rule 10b5-1 trading plan is reported for this transaction.

How large was the CURB stock sale relative to the director’s holdings?

The director sold 2,344 shares and held 6,550,914 shares afterward, indicating the reported transaction represents only a small portion of his disclosed direct holdings.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 09/14/2026 - 04:10 PM Accepted by SEC EDGAR 09/14/2026 - 04:10 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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)

HAMBURG GERMANY D-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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/10/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/10/2026		S		2,344	D	$29.51(1)(2)	6,550,914	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount 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 $29.50 and $29.53.

	/s/ Frederic Arndts, managing director of KG CURA Vermogensverwaltung G.m.b.H. & Co., For: Alexander Otto	09/14/2026
	** Signature of Reporting Person	Date
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)