Curbline Properties Corp. — Director's Dealing 2026

Feb 24, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Curbline Properties Corp. (CURB)
CIK: 0002027317
Period of Report: 2026-02-22

Reporting Person: Cattonar John M (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-22	Common Stock	F	1893	$27.25	Disposed	147458	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
LTIP Units	$		Common Stock (5740)	5740	Direct

Footnotes

F1: Reflects a class of limited partnership units in Curbline Properties LP ("LTIP Units"). Conditioned upon minimum allocations to the capital accounts of the LTIP Units for federal income tax purposes and vesting, each LTIP Unit may be converted into a common unit in Curbline Properties LP (a "Common Unit"). Each Common Unit acquired upon conversion of an LTIP Unit may be redeemed for one share of Issuer common stock or cash, at the election of the Issuer. The right to convert LTIP Units into Common Units and to redeem Common Units for cash or shares of Issuer common stock do not have expiration dates

F2: Annual grant of LTIP Units made in accordance with the terms of Mr. Cattonar's Assigned Employment Agreement dated as of September 1, 2024, as amended by the First Amendment thereto dated as of September 26, 2025 (the "Employment Agreement"). These LTIP Units vest ratably on the first four anniversaries of the grant date, subject generally to Mr. Cattonar's continued employment with the Issuer