Termination of a Material Definitive Agreement. The information set forth in

Material Modification to Rights of Security Holders. Effective as of August 12, 2026, the board of directors of Curbline Properties Corp. (the “Company”) determined that the beneficial ownership of Mr. Alexander Otto, a member of the Company’s board of directors, his family and other persons who may be deemed to have constructive ownership of common stock owned by the Otto family (collectively, the “Exempt Holder”) was 7.5% or less of the Company’s outstanding common stock (the “Exempt Holder…

Results of Operations and Financial Condition. On July 28, 2026, Curbline Properties Corp. (the “Company”) issued a quarterly financial supplement containing financial and property information of the Company (the “Quarterly Supplement”) for the quarter ended June 30, 2026, which includes a News Release containing financial results of the Company. A copy of the Quarterly Supplement is attached hereto as Exhibit 99.1 and is incorporated herein by reference. This information shall not be deemed…

Other Events. On June 29, 2026, Curbline Properties Corp., a Maryland corporation (the “Company”), and Curbline Properties LP, a Delaware limited partnership (the “Operating Partnership”), entered into an underwriting agreement (the “Underwriting Agreement”) with Goldman Sachs & Co. LLC, Morgan Stanley & Co. LLC and Wells Fargo Securities, LLC, as underwriters (in such capacities, the “Underwriters”), forward sellers (in such capacities, the “Forward Sellers”) and affiliates thereof as forwar…

Executive Vice President, Chief Financial Officer, Treasurer (Mr. Fennerty); Executive Vice President and Chief Investment Officer (Mr. Cattonar) — Conor Fennerty, John Cattonar: The company extended and expanded the employment agreements for Mr. Fennerty and Mr. Cattonar, including increased salaries and equity awards.

Entry into a Material Definitive Agreement. Equity Sales Agreement On June 2, 2026, Curbline Properties Corp. (the “ Company ”) and Curbline Properties LP (the “ Operating Partnership ”) entered into an ATM Equity Offering Sales Agreement (the “ Equity Sales Agreement ”) with Jefferies LLC, BNY Mellon Capital Markets, LLC, BofA Securities, Inc., BTIG, LLC, Capital One Securities, Inc., Goldman Sachs & Co. LLC, KeyBanc Capital Markets Inc., Morgan Stanley & Co. LLC, Nomura Securities Internati…

Results of Operations and Financial Condition. On April 28, 2026, Curbline Properties Corp. (the “Company”) issued a quarterly financial supplement containing financial and property information of the Company (the “Quarterly Supplement”) for the quarter ended March 31, 2026, which includes a News Release containing financial results of the Company. A copy of the Quarterly Supplement is attached hereto as Exhibit 99.1 and is incorporated herein by reference. This information shall not be deeme…

Other Events. On February 10, 2026, Curbline Properties Corp., a Maryland corporation (the “Company”), and Curbline Properties L.P., a Delaware limited partnership (the “Operating Partnership”), entered into an underwriting agreement (the “Underwriting Agreement”) with Morgan Stanley & Co. LLC and BofA Securities, Inc., as underwriters (in such capacities, the “Underwriters”), forward sellers (in such capacities, the “Forward Sellers”) and affiliates thereof as forward purchasers (in such cap…

Results of Operations and Financial Condition. On February 9, 2026, Curbline Properties Corp. (the “Company”) issued a quarterly financial supplement containing financial and property information of the Company (the “Quarterly Supplement”) for the quarter and year ended December 31, 2025, which includes a News Release containing financial results of the Company. A copy of the Quarterly Supplement is attached hereto as Exhibit 99.1 and is incorporated herein by reference. This information shal…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The terms of the direct financial obligations are summarized in

Entry into a Material Definitive Agreement. On November 12, 2025, Curbline Properties Corp. (the “Company”) and its subsidiary, Curbline Properties LP (the “Operating Partnership”), entered into a Note and Guaranty Agreement (the “Note Agreement”) in connection with a private placement of $200 million of the Operating Partnership’s senior unsecured notes (the “Notes”), consisting of (i) $50 million aggregate principal amount of 4.90% senior unsecured notes due January 20, 2031 (the “2025-C No…

Results of Operations and Financial Condition. On October 28, 2025, Curbline Properties Corp. (the “Company”) issued a quarterly financial supplement containing financial and property information of the Company (the “Quarterly Supplement”) for the quarter ended September 30, 2025, which includes a News Release containing financial results of the Company. A copy of the Quarterly Supplement is attached hereto as Exhibit 99.1 and is incorporated herein by reference. This information shall not be…

Entry into a Material Definitive Agreement. Equity Sales Agreement On October 1, 2025, Curbline Properties Corp. (the “ Company ”) and Curbline Properties LP (the “ Operating Partnership ”) entered into an ATM Equity Offering Sales Agreement (the “ Equity Sales Agreement ”) with Wells Fargo Securities, LLC, BNY Mellon Capital Markets, LLC, BofA Securities, Inc., BTIG, LLC, Capital One Securities, Inc., Goldman Sachs & Co. LLC, Jefferies LLC, KeyBanc Capital Markets Inc., Morgan Stanley & Co.…

Other Events. Share Repurchase Program On September 25, 2025, the Company’s board of directors authorized a share repurchase program of up to an aggregate purchase price of $250,000,000. Repurchases of common stock under the share repurchase program may be made from time to time in the open market, in privately negotiated purchases, in accelerated share repurchase programs or by any other lawful means. The number of shares of common stock purchased and the timing of any purchases will depend…

The amendments to the employment agreements primarily concern compensation adjustments and do not represent a departure or change in management roles.

Results of Operations and Financial Condition. On July 28, 2025, Curbline Properties Corp. (the “Company”) issued a quarterly financial supplement containing financial and property information of the Company (the “Quarterly Supplement”) for the quarter ended June 30, 2025, which includes a News Release containing financial results of the Company. A copy of the Quarterly Supplement is attached hereto as Exhibit 99.1 and is incorporated herein by reference. This information shall not be deemed…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The terms of the direct financial obligations are summarized in

Entry into a Material Definitive Agreement. Term Loan Agreement On July 15, 2025, Curbline Properties Corp. (the “Company”) and its subsidiary, Curbline Properties LP (the “Operating Partnership”), as borrower, the lenders named therein and PNC Bank, National Association, as administrative agent, entered into a Term Loan Agreement (the “ Term Loan Agreement ”) that provides for a term loan facility in the amount of $150.0 million (the “ Term Loan Facility ”). In connection with entering into…

Entry into a Material Definitive Agreement. On June 26, 2025, Curbline Properties Corp. (the “Company”) and its subsidiary, Curbline Properties LP (the “Operating Partnership”), entered into a Note and Guaranty Agreement (the “Note Agreement”) in connection with a private placement of $150 million of the Operating Partnership’s unsecured senior notes (the “Notes”), consisting of (i) $100 million aggregate principal amount of 5.58% unsecured senior notes due September 3, 2030 and (ii) $50 mill…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The terms of the direct financial obligations are summarized in

Results of Operations and Financial Condition. On April 24, 2025, Curbline Properties Corp. (the “Company”) issued a quarterly financial supplement containing financial and property information of the Company (the “Quarterly Supplement”) for the quarter ended March 31, 2025, which includes a News Release containing financial results of the Company. A copy of the Quarterly Supplement is attached hereto as Exhibit 99.1 and is incorporated herein by reference. This information shall not be deeme…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. On March 28, 2025, Curbline Properties LP (the “Borrower”), a wholly owned subsidiary of Curbline Properties Corp. (“the Company”), funded an aggregate of $100 million in indebtedness pursuant to the previously disclosed delayed-draw term loan facility provided under the Company’s previously disclosed Credit Agreement, dated as of October 1, 2024, among the Borrower, the Company,…

Results of Operations and Financial Condition. On February 11, 2025, Curbline Properties Corp. (the “Company”) issued a quarterly financial supplement containing financial and property information of the Company (the “Quarterly Supplement”) for the quarter ended December 31, 2024, which includes a News Release containing financial results of the Company. A copy of the Quarterly Supplement is attached hereto as Exhibit 99.1 and is incorporated herein by reference. This information shall not be…

Changes in Control of Registrant. The information set forth in

Director: The filing describes the expansion of the board and the election of new directors to form committees, which is a standard governance restructuring rather than the loss of a senior executive.