CURBLINE PROPERTIES 2Q25 QUARTERLY FINANCIAL SUPPLEMENT QUARTER ENDED September 30, 2025 Recent Acquisition Roundlake Plaza, TAMPA, FLORIDA (Form 8-K)

CURBLINE PROPERTIES 2Q25 QUARTERLY FINANCIAL SUPPLEMENT QUARTER ENDED September 30, 2025 Recent Acquisition Roundlake Plaza, TAMPA, FLORIDA

CURBLINE PROPERTIES COMPANY & PORTFOLIO OVERVIEW Curbline Properties is an owner and manager of convenience shopping centers positioned on the curbline of well-trafficked intersections and major vehicular corridors in suburban, high household income communities. $2.3B MARKET CAPITALIZATION 162 PROPERTIES 4.5M GLA THE CURBLINE PORTFOLIO 117K AVERAGE HOUSEHOLD INCOME TOP 5 MSAs by ABR ATLANTA 12% MIAMI 11% PHOENIX 8% ORLANDO 6% HOUSTON 6% THE CURBLINE PROTFOLIO SOUTHEAST 41% SOUTHWEST MOUNTAIN & TEXAS 24% MID-ATLANTIC 11% MIDWEST & NORTHEAST 11% WEST COAST 14% RETAILER MIX LOCAL 30% NATIONAL 70% PROPERTY COMPOSITION ANCHOR 6% SHOP 94% AVERAGE ASSET SIZE 28K SF CURBLINE PROPERTIES INVESTOR RELATIONS DEPARTMENT e: [email protected] w: ir.curbline.com 323 Park Avenue, 27thFloor, New York, NY 10022 3300 Enterprise Pkwy Beachwood, OH 44122 o:216-755-6200 f:216-274-9711 w: curbline.com • NYSE:CURB CURB LISTED NYSE

Curbline Properties Corp.

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New York, New York, October 28, 2025 - Curbline Properties Corp. (NYSE: CURB) (the "Company" or "Curbline"), an owner of convenience centers in suburban, high household income communities, announced today operating results for the quarter ended September 30, 2025.

"Curbline had a very strong third quarter with results ahead of expectations, over $330 million of acquisitions, better-than-budgeted same-property NOI growth and elevated new leasing activity pushing the Company's leased rate close to 97%. Momentum has continued into the fourth quarter highlighting the strength of the Company's simple and focused business plan," commented David R. Lukes, President and Chief Executive Officer. "Curbline remains uniquely positioned in the public real estate sector as it looks to scale the first public real estate company focused exclusively on convenience properties given its differentiated investment focus, the leasing economics of the Company's property type, and its balance sheet."

Results for the Third Quarter

Significant Third Quarter Activity and Recent Activity

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Key Quarterly Operating Results

2025 Guidance

The Company has updated its guidance for net income attributable to Curbline for 2025 to be from $0.35 to $0.38 per diluted share and Operating FFO to be from $1.04 to $1.05 per diluted share. The Company does not include a projection of gains or losses on asset sales, transaction costs or debt extinguishment costs in guidance.

Reconciliation of Net Income Attributable to Curbline to FFO and Operating FFO estimates:

About Curbline Properties

Curbline Properties is an owner and manager of convenience shopping centers positioned on the curbline of well-trafficked intersections and major vehicular corridors in suburban, high household income communities. The Company is a self-managed real estate investment trust ("REIT") that is publicly traded under the ticker symbol "CURB" on the NYSE. Additional information about the Company is available at curbline.com. To be included in the Company's e-mail distributions for press releases and other investor news, please click here.

Conference Call and Supplemental Information

The Company will hold its quarterly conference call today at 8:00 a.m. Eastern Time. To participate with access to the slide presentation, please visit the Investor Relations portion of Curbline's website, ir.curbline.com, or for audio only, dial 800-715-9871 (U.S.) or 646-307-1963 (international) using pass code 6823859 at least ten minutes prior to the scheduled start of the call. The call will also be webcast and available in a listen-only mode on Curbline's website at ir.curbline.com. If you are unable to participate during the live call, a replay of the conference call will also be available at ir.curbline.com for further review. You may also access the telephone replay by dialing 800-770-2030 or 609-800-9909 (international) using passcode 6823859 through November 4, 2025. Copies of the Company's supplemental package and earnings slide presentation are available on the Company's website.

Non-GAAP Measures and Other Operational Metrics

Funds from Operations ("FFO") is a supplemental non-GAAP financial measure used as a standard in the real estate industry and is a widely accepted measure of REIT performance. The Company believes that both FFO and Operating FFO provide additional indicators of the financial performance of a REIT, more appropriately measure the core operations of the Company, and provide benchmarks to its peer group.

2

FFO is generally defined and calculated by the Company as net income attributable to Curbline (computed in accordance with Generally Accepted Accounting Principles in the United States ("GAAP")), adjusted to exclude (i) gains and losses from disposition of real estate property, which are presented net of taxes, (ii) impairment charges on real estate property, (iii) gains and losses from changes in control and (iv) certain non-cash items. These non-cash items principally include real property depreciation and amortization of intangibles net of depreciation allocated to non-controlling interests. The Company's calculation of FFO is consistent with the definition of FFO provided by NAREIT. The Company calculates Operating FFO as FFO excluding certain non-operating charges, income and gains/losses. Operating FFO is useful to investors as the Company removes non-comparable charges, income and gains/losses to analyze the results of its operations and assess performance of the core operating real estate portfolio. Other real estate companies may calculate FFO and Operating FFO in a different manner.

In calculating the expected range for or amount of net income attributable to Curbline to estimate projected FFO and Operating FFO for future periods, the Company does not include a projection of gains and losses from the disposition of real estate property, potential impairments and reserves of real estate property, debt extinguishment costs and certain transaction costs. Other real estate companies may calculate expected FFO and Operating FFO in a different manner.

The Company also uses net operating income ("NOI"), a non-GAAP financial measure, as a supplemental performance measure. NOI is calculated as property revenues less property-related expenses and excludes depreciation and amortization expense, interest income and expense and corporate level transactions. The Company believes NOI provides useful information to investors regarding the Company's financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level and, when compared across periods, reflects the impact on operations from trends in occupancy rates, rental rates, operating costs and acquisition and disposition activity on an unleveraged basis.

The Company presents NOI information herein on a same-property basis or "SPNOI." The Company defines SPNOI as property revenues less property-related expenses, which exclude straight-line rental income and reimbursements and expenses, lease termination income, management fee expense, and fair market value of leases. SPNOI only includes assets owned for the entirety of both comparable periods. SPNOI excludes all non-property and corporate level revenue and expenses. Other real estate companies may calculate NOI and SPNOI in a different manner. The Company believes SPNOI provides investors with additional information regarding the operating performances of comparable assets because it excludes certain non-cash and non-comparable items as noted above.

FFO, Operating FFO, NOI and SPNOI do not represent cash generated from operating activities in accordance with GAAP, are not necessarily indicative of cash available to fund cash needs and should not be considered as alternatives to net income computed in accordance with GAAP, as indicators of the Company's operating performance or as alternatives to cash flow as a measure of liquidity. Reconciliations of these non-GAAP measures to their most directly comparable GAAP measures have been provided herein.

The Company calculates Cash Leasing Spreads by comparing the prior tenant's annual base rent in the final year of the prior lease to the executed tenant's annual base rent in the first year of the executed lease. Straight-Lined Leasing Spreads are calculated by comparing the prior tenant's average base rent over the prior lease term to the executed tenant's average base rent over the term of the executed lease. For both Cash and Straight-Lined Leasing Spreads, the reported calculation excludes first generation units and spaces vacant at the time of acquisition and includes all leases for spaces vacant greater than twelve months along with split and combination deals.