CURB · Curbline Properties Corp.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.12

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.26.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.02.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.33.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.33.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.15.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.20.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.23.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.03 and $30.42.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.42.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.00 and $30.13.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $29.75 and $29.81.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $29.75 and $30.46.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.06 and $30.25.

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.

Reflects the weighted average sale price. The range of prices for such transaction is between $30.05 and $30.28.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $30.225 to $30.67. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range

Grant of Restricted Stock Awards ("RSAs") made in accordance with the terms of the executive's Amernded and Restated Employment Agreement dated June 25, 2026.

Grant of Restricted Stock Awards ("RSAs") made in accordance with the terms of the executive's Amended and Restated Employment Agreement dated June 25, 2026.

Gift by the Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025.

Reflects indirect ownership of gifted securities by the Jacqueline Lukes 2025 Irrevocable Trust U/A dtd 08/07/2025, where Mr. Lukes' spouse is the settlor, Mr. Lukes is the trustee and Mr. Lukes' child is the beneficiary of such trust.

Gift by the Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025.

Reflects indirect ownership of gifted securities by the Katherine Kensett Lukes 2025 Irrevocable Trust U/A dtd 08/07/2025, where Mr. Lukes' spouse is the settlor, Mr. Lukes is the trustee and Mr. Lukes' child is the beneficiary of such trust.

Gift by the Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025.

Reflects indirect ownership of gifted securities by the Sarah Lukes 2025 Irrevocable Trust U/A dtd 08/07/2025, where Mr. Lukes' spouse is the settlor, Mr. Lukes is the trustee and Mr. Lukes' child is the beneficiary of such trust.

Gift by the Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $26.75 to $27.02. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range.

The price reported in column 4 is a weighted average price.These shares were sold in multiple transactions at prices ranging from $26.75 to $26.89. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range.

Annual grant of service-based restricted stock made in accordance with the terms of Mr. Fennerty's Assigned Employment Agreement dated as of September 1, 2024, as amended by the First Amendment thereto dated as of September 26, 2025. These shares vest ratably on the first four anniversaries of the grant date, subject generally to Mr. Fennerty's continued employment with the Issuer.

Annual grant of service-based restricted stock made in accordance with the terms of Ms. Solomon's Assigned Employment Agreement dated as of September 1, 2024, as amended by the First Amendment thereto dated as of September 26, 2025. These shares vest ratably on the first four anniversaries of the grant date, subject generally to Ms. Solomon's continued employment with the Issuer

Represents a grant of service-based restricted stock that generally vests in substantially equal amounts on each of the first four anniversaries of the date of grant.

Gift to Spouse resulting in a change of beneficial ownership from direct to indirect of the gifted securities.

Gift to Spouse resulting in a change of beneficial ownership from direct to indirect of the gifted securities.

Reflects indirect ownership by the Elizabeth G Lukes 2025 Revocable Trust U/A dtd 08/07/2025, for which Mr. Luke's spouse is the settlor, trustee and beneficiary.

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.24 to $22.59. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.46 to $22.685. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range

The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $22.625 to $22.96. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the Staff of the Securities and Exchange Commission, upon request, with full information regarding the number of shares sold at each separate price within this range