Curbline Properties (CURB) EVP reports tax-withholding share disposition

Rhea-AI Filing Summary

Curbline Properties Corp. executive vice president and chief investment officer John M. Cattonar reported a tax-related share disposition. On February 28, 2026, he transferred 9,320 shares of common stock at $27.81 per share to cover tax obligations. After this tax-withholding disposition, he directly held 138,138 common shares of the company.

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

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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^*

Cattonar John M

(Last) (First) (Middle)

320 PARK AVENUE

(Street)

NEW YORK NY 10022

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Curbline Properties Corp. [ CURB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Investment Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/28/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

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

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	02/28/2026		F		9,320	D	$27.81	138,138	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:

	/s/ Jennifer Daubenspeck, Attorney-In-Fact	03/03/2026
	** 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.

FAQ

What insider transaction did CURB executive John M. Cattonar report?

John M. Cattonar reported a tax-withholding disposition of Curbline Properties Corp. common stock. He transferred 9,320 shares on February 28, 2026 at $27.81 per share to satisfy tax obligations tied to equity compensation.

Was the CURB insider transaction an open-market sale of shares?

No, the CURB insider transaction was a tax-withholding disposition, not an open-market sale. Shares were delivered to cover tax liabilities, which is common for equity awards, and does not reflect a discretionary decision to sell in the market.

How many Curbline Properties (CURB) shares did the insider dispose of?

The insider disposed of 9,320 common shares of Curbline Properties Corp. The transaction was coded “F,” indicating payment of exercise price or tax liability by delivering securities rather than a voluntary buy-or-sell trade in the open market.

At what price were the CURB shares used for the tax-withholding disposition?

The shares in the tax-withholding disposition were valued at $27.81 per share. This price is used in the Form 4 to calculate the value of shares delivered to satisfy tax obligations associated with the executive’s equity compensation.

How many Curbline Properties (CURB) shares does the insider own after the transaction?

After the tax-withholding disposition, the insider directly owned 138,138 shares of Curbline Properties Corp. This post-transaction holding reflects his remaining equity stake following delivery of 9,320 shares to meet related tax liabilities.

What does transaction code “F” mean in the CURB Form 4 filing?

Transaction code “F” indicates payment of exercise price or tax liability by delivering securities. For this CURB filing, it shows the executive satisfied tax obligations by transferring company shares rather than executing a discretionary market sale.