CAMDEN PROPERTY TRUST

Notes to Condensed Consolidated Financial Statements

1. Description of Business

Business. Formed on May 25, 1993, Camden Property Trust ("CPT"), a Texas real estate investment trust ("REIT"), and all consolidated subsidiaries are primarily engaged in the ownership, management, development, reposition, redevelopment, acquisition, and construction of multifamily apartment communities. Our multifamily apartment communities are referred to as "communities," "multifamily communities," "properties," or "multifamily properties" in the following discussion. As of March 31, 2024, we owned interests in, operated, or were developing 175 multifamily properties comprised of 59,227 apartment homes across the United States. Of the 175 properties, four properties were under construction as of March 31, 2024, and will consist of a total of 1,166 apartment homes when completed. We also own land holdings which we may develop into multifamily communities in the future.

2. Summary of Significant Accounting Policies and Recent Accounting Pronouncements

Principles of Consolidation. Our condensed consolidated financial statements include our accounts and the accounts of other subsidiaries (including partnerships and limited liability companies) over which we have control. All intercompany transactions, balances, and profits have been eliminated in consolidation. Investments acquired or created are evaluated based on the accounting guidance relating to variable interest entities ("VIEs"), which requires the consolidation of VIEs in which we are considered to be the primary beneficiary. If the investment is determined not to be a VIE, then the investment is evaluated for consolidation primarily using a voting interest model. In determining if we have a controlling financial interest, we consider factors such as ownership interests, decision making authority, kick-out rights, and participating rights. As of March 31, 2024, two of our consolidated operating partnerships were VIEs. We are considered the primary beneficiary of both consolidated operating partnerships and therefore consolidate these operating partnerships. As of March 31, 2024, we held approximately 93% and 95% of the outstanding common limited partnership units and the sole 1% general partnership interest in each of these consolidated operating partnerships.

Interim Financial Reporting. We have prepared these unaudited financial statements in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial statements and the applicable rules and regulations of the Securities and Exchange Commission ("SEC"). Accordingly, these statements do not include all information and footnote disclosures required for annual statements. While we believe the disclosures presented are adequate for interim reporting, these interim unaudited financial statements should be read in conjunction with the audited financial statements and notes included in our 2023 Annual Report on Form 10-K.

Asset Impairment. Long-lived assets are reviewed for impairment annually or whenever events or changes in circumstances indicate the carrying amount of an asset may not be recoverable. Impairment may exist if estimated future undiscounted cash flows associated with long-lived assets are not sufficient to recover the carrying value of such assets. We consider projected future undiscounted cash flows, trends, strategic decisions regarding future development plans, and other factors in our assessment of whether impairment conditions exist. While we believe our estimates of future cash flows are reasonable, different assumptions regarding a number of factors, including market rents, economic conditions, and occupancies, could significantly affect these estimates. When impairment exists, the long-lived asset is adjusted to its fair value. In estimating fair value, management uses appraisals, management estimates, and discounted cash flow calculations which utilize inputs from a marketplace participant's perspective. We did not record any impairment charges for the three months ended March 31, 2024 or 2023.

The value of our properties under development depends on market conditions, including estimates of the project start date, projected construction costs, and demand for multifamily communities. We have reviewed market trends and other marketplace information and incorporated this information as well as our current outlook into the assumptions we use in our impairment analyses. Due to the judgment and assumptions applied in the impairment analyses, it is possible actual results could differ substantially from those estimated.

We believe the carrying value of our operating real estate assets, properties under development, and land is currently recoverable. However, if market conditions deteriorate or if changes in our development strategy significantly affect any key assumptions used in our fair value estimates, we may need to take material charges in future periods for impairments related to existing assets. Any such material non-cash charges could have an adverse effect in our condensed consolidated financial position and results of operations.

Cost Capitalization. Real estate assets are carried at cost plus capitalized carrying charges. Carrying charges are primarily interest and real estate taxes which are capitalized as part of properties under development. Capitalized interest is generally based on the weighted average interest rate of our unsecured debt and was approximately $5.0 million for each of the three months ended March 31, 2024 and 2023. Capitalized real estate taxes were approximately $1.4 million and $1.3 million for the three months ended March 31, 2024 and 2023, respectively.

Expenditures directly related to the development and improvement of real estate assets are capitalized at cost as land and buildings and improvements. Indirect development costs, including salaries and benefits and other related costs directly attributable to the development of properties, are also capitalized. We begin capitalizing development, construction, and carrying costs when the development of the future real estate asset is probable and certain activities necessary to prepare the underlying real estate for its intended use have been initiated. All construction and carrying costs are capitalized and reported in the balance sheet as properties under development until the apartment homes are substantially completed. As apartment homes within development properties are substantially completed, the total capitalized development cost of each apartment home is transferred from properties under development including land to buildings and improvements.

Depreciation and amortization is computed over the expected useful lives of depreciable property on a straight-line basis with lives generally as follows:

Derivative Financial Instruments. Derivative financial instruments are recorded in the condensed consolidated balance sheets at fair value and presented on a gross basis for financial reporting purposes even when those instruments are subject to master netting arrangements and may otherwise qualify for net presentation. Accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether we have elected to designate a derivative in a hedging relationship and apply hedge accounting, and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. Cash flows from derivatives and the related gains and losses are classified as cash flows from operating activities on the condensed consolidated statements of cash flows.

Cash Flow Hedges. For derivative instruments which are designated and qualify as a cash flow hedge, the derivative's gain or loss is reported as a component to other comprehensive income ("OCI") and recorded in accumulated other comprehensive income ("AOCI") on our condensed consolidated balance sheets. The gain or loss is subsequently reclassified into net earnings when the hedged exposure affects net earnings, in the same line item as the underlying hedged item on our condensed consolidated statements of earnings.

Cash flow hedges related to anticipated transactions are designated and documented at the inception of each hedge. Cash flows from hedging transactions are classified in the same categories as the cash flows from the respective hedged items.

Fair Value Hedges. For derivative instruments which are designated and qualify as a fair value hedge, the changes in fair value of the derivative instrument and the offsetting changes in fair value of the underlying hedged item due to changes in the hedged risk are recorded to interest expense on our condensed consolidated statements of earnings.

Counterparty Credit Risk. Fair values of our derivatives can change significantly from period to period based on, among other factors, market movements and changes in our positions. We manage counterparty credit risk (the risk counterparties will default and not make payments to us according to the terms of our agreements) on an individual counterparty basis.

Fair Value. For financial assets and liabilities recorded at fair value on a recurring or non-recurring basis, fair value is the price we would expect to receive to sell an asset, or pay to transfer a liability, in an orderly transaction with a market participant at the measurement date under current market conditions. In the absence of such data, fair value is estimated using internal information consistent with what market participants would use in a hypothetical transaction.

In determining fair value, observable inputs reflect market data obtained from independent sources while unobservable inputs reflect our market assumptions; preference is given to observable inputs. These two types of inputs create the following fair value hierarchy:

•Level 1: Quoted prices for identical instruments in active markets.

•Level 2: Quoted prices for similar instruments in active markets; quoted prices for identical or similar instruments in markets that are not active; and model-derived valuations whose inputs are observable or whose significant value drivers are observable.

•Level 3: Significant inputs to the valuation model are unobservable.

Recurring Fair Value Measurements. The following describes the valuation methodologies we use to measure different financial instruments at fair value on a recurring basis:

Derivative Financial Instruments. The estimated fair values of derivative financial instruments are valued using widely accepted valuation techniques including discounted cash flow analysis on the expected cash flows of each derivative. This analysis reflects the contractual terms of the derivatives, including the period to maturity, and uses observable market-based inputs, including interest rate curves and volatility. The fair values of interest rate swaps are estimated using the market-standard methodology of netting the discounted fixed cash payments and the discounted expected variable cash receipts. The variable cash receipts are based on an expectation of interest rates (forward curves) derived from observable market interest rate curves. In addition, credit valuation adjustments, which consider the impact of any credit enhancements to the contracts, are incorporated in the fair values to account for potential nonperformance risk, including our own nonperformance risk and the respective counterparty’s nonperformance risk.

Although we have determined the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads, to evaluate the likelihood of default. However, we have assessed the significance of the impact of the credit valuation adjustments on the overall valuation of our derivative positions and have determined the credit valuation adjustments are not significant to the overall valuation of our derivatives. As a result, we have determined our derivative valuations in their entirety are classified in Level 2 of the fair value hierarchy.

Deferred Compensation Plan Investments. The estimated fair values of investment securities classified as deferred compensation plan investments are based on quoted market prices utilizing public information for the same transactions. Our deferred compensation plan investments, excluding the value of Company shares, are recorded in other assets in our condensed consolidated balance sheets. The inputs associated with the valuation of our recurring deferred compensation plan investments are included in Level 1 of the fair value hierarchy.

Non-Recurring Fair Value Measurements. Certain assets are measured at fair value on a non-recurring basis. These assets are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances. These assets primarily include long-lived assets which are recorded at fair value when they are acquired, including the remeasurement of previously held ownership interests, using fair value methodologies described above at"Acquisitions of Real Estate," or if the long-lived assets are impaired using the fair value methodologies used to measure long-lived assets described above at"Asset Impairment."The inputs associated with the valuation of long-lived assets are generally included in Level 3 of the fair value hierarchy, unless a quoted price for a similar long-lived asset in an active market exists, at which time they are included in Level 2 of the fair value hierarchy.

Financial Instrument Fair Value Disclosures. As of March 31, 2024 and December 31, 2023, the carrying values of cash and cash equivalents, accounts receivable, accounts payable, accrued expenses, and distributions payable represented fair value because of the short-term nature of these instruments. The carrying value of restricted cash approximates its fair value based on the nature of our assessment of the ability to recover these amounts. In calculating the fair value of our notes payable, interest rate and spread assumptions reflect current credit worthiness and market conditions available for the issuance of notes payable with similar terms and remaining maturities. These financial instruments utilize Level 2 inputs.

Income Recognition. The majority of our revenues are derived from real estate lease contracts and presented as property revenues, and include rental revenue as well as revenue under contractual terms for other services provided to our customers. As a lessor, we have also elected practical expedients to: i) not separate the lease and non-lease components by class of underlying assets and account for the combined components as a single component under certain conditions, and ii) exclude from lease revenues the sales taxes collected from lessees and certain lessor costs paid directly by the lessee. Our other revenue streams include fee and asset management income in accordance with other revenue guidance, ASC 606, Revenues from Contracts with Customers. Details of our material revenue streams are discussed below:

Property Revenues. We earn rental revenue from operating lease contracts for the use of dedicated spaces within owned assets, which is our only underlying asset class. We recognize rental revenues from these lease contracts on a straight-line basis over the applicable lease term, net of amounts related to lease contracts identified as uncollectible. We also earn revenues under contractual terms for other services considered non-lease components within a lease contract, primarily consisting of utility rebillings and other transactional fees. These amounts received under contractual terms for other services are charged to our residents and recognized monthly as earned. Any identified uncollectible amounts related to individual lease contracts are presented as an adjustment to property revenue. Any renewal options of real estate lease contracts are considered a new and separate contract which will be recognized at the time the option is exercised on a straight-line basis over the renewal period.

As of March 31, 2024, our average residential lease term was approximately fourteen months with all non-residential commercial leases averaging longer lease terms. We currently anticipate property revenue from existing leases as follows:

Credit Risk. We believe there is no significant concentration of credit risk due to the number of residents, the types and diversity of submarkets in which our properties operate, and the collection terms.

Investments. We hold equity interests in certain technology funds which are not accounted for using the equity method because we have no influence over these entities and their fair values are not readily determinable. These investments are recorded using the measurement alternative in which our equity interests are recorded at cost, adjusted for impairments and observable price changes in orderly transactions for an identical or similar investment of the same issuer. At each reporting period, we reassess whether these investments continue to qualify for this measurement alternative. We had investments recorded at cost of approximately $14.8 million and $14.3 million as of March 31, 2024 and December 31, 2023, respectively. These investments are included in other assets, net in our condensed consolidated balance sheets and we did not record any impairments during the three months ended March 31, 2024 or 2023 relating to these investments.

Recent Accounting Pronouncements: In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update ("ASU") 2023-07 ("ASU 2023-07"), Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures. ASU 2023-07 is intended to enhance disclosures regarding a public entity's reportable segments by requiring public entities, who have a single reportable segment or multiple reportable segments, to disclose significant segment expenses which are regularly provided to the chief operating decision maker ("CODM"), the title or position of the CODM, and how the CODM utilizes segment information to assess performance and allocate resources. ASU 2023-07 is effective for annual periods beginning after December 15, 2023 and interim periods for fiscal years beginning after December 15, 2024, and early adoption is permitted. This standard must be applied using the retrospective transition method upon adoption. We expect to adopt ASU 2023-07 in our 2024 Form 10-K and in the interim periods thereafter. The adoption of ASU 2023-07 will require additional disclosures, but we do not believe the adoption will materially impact our consolidated financial statements.

In December 2023, the FASB issued ASU 2023-09 ("ASU 2023-09"), Income Taxes (Topic 740): Improvements to Income Tax Disclosures. ASU 2023-09 requires additional disclosures to enhance the transparency regarding income tax information through the use of a rate reconciliation table and disclosure of net taxes paid, detailed by federal, state, and foreign taxes and, if applicable, further detailed by specific jurisdictions if the amount exceeds a qualitative threshold. ASU 2023-09 is effective for annual periods beginning after December 15, 2024, and early adoption is permitted. This standard may be applied either on a prospective basis or on a retrospective basis. We expect to adopt ASU 2023-09 for the fiscal year ending December 31, 2025 and do not expect the additional disclosure to impact our consolidated financial statements contained in our Annual Report on Form 10-K for the fiscal year ended December 31, 2025.

In March 2024, the SEC issued final rules on the enhancement and standardization of climate-related disclosures. The rules require disclosure of, among other things: material climate-related risks; activities to mitigate or adapt to such risks; governance and management of such risks; and material greenhouse gas (GHG) emissions from operations owned or controlled (Scope 1) and/or indirect emissions from purchased energy consumed in operations (Scope 2). Additionally, the rules require disclosure in the notes to the financial statements regarding the effects of severe weather events and other natural conditions, subject to certain materiality thresholds. As published, rules will be effective on a phased-in-timeline starting with annual periods beginning in 2025. On April 4, 2024, the SEC issued a stay on this rule pending the outcome of existing and future legal challenges, and it is therefore unclear at this time when, or if, the climate disclosure rule will become effective.

3. Per Share Data

Basic earnings per share is computed using net income attributable to common shareholders and the weighted average number of common shares outstanding. Diluted earnings per share reflects common shares issuable from the assumed conversion of common share options and unvested share awards as well as units convertible into common shares. Only those items having a dilutive impact on our basic earnings per share are included in diluted earnings per share. Our unvested share-based awards are considered participating securities and are reflected in the calculation of basic and diluted earnings per share using the two-class method. Common shares under a forward sale agreement, if any, will be considered in our calculation for diluted earnings-per-share until settlement using the if-converted method. The number of common share equivalent securities excluded from the diluted earnings per share calculation was approximately 1.8 million and for each of the three months ended March 31, 2024 and 2023. These securities, which include share awards granted and units convertible into common shares, are anti-dilutive and were therefore excluded from the diluted earnings per share calculations. The following table presents information necessary to calculate basic and diluted earnings per share for the periods indicated:

4. Common Shares

In May 2023, we created an at-the-market ("ATM") share offering program through which we can, but have no obligation to, sell common shares for an aggregate offering amount of up to $500.0 million (the "2023 ATM program"), in amounts and at times as we determine, into the existing trading market at current market prices as well as through negotiated transactions. Actual sales from time to time may depend on a variety of factors including, among others, market conditions, the trading price of our common shares, and determinations by management of the appropriate sources of funding for us. We intend to use the proceeds from any sale of our common shares under the 2023 ATM program for general corporate purposes, which may include reducing future borrowings under our unsecured revolving credit facility, the repayment of other indebtedness, the redemption or other repurchase of outstanding debt or equity securities, funding for development activities, and financing for acquisitions.

The 2023 ATM program also permits the use of forward sale agreements which allows us to lock in a share price on the sale of common shares at the time the agreement is executed, but defer receiving the proceeds from the sale of the applicable shares until a later date. If we enter into a forward sale agreement, we expect the applicable forward purchasers will borrow from third parties and, through the applicable sales agent acting in its role as forward seller, sell a number of common shares equal to the number of shares underlying the applicable agreement. Under this scenario, we would not initially receive any proceeds from any sale of borrowed shares by the forward seller. We expect to physically settle each forward sale agreement with the relevant forward purchaser on or prior to the maturity date of a particular forward sale agreement by issuing our common shares in return for the receipt of aggregate net cash proceeds at settlement equal to the number of common shares underlying the particular forward sale agreement multiplied by the relevant forward sale price. However, at our sole discretion, we may also elect to cash settle or net share settle a particular forward sale agreement, in which case we may not receive any proceeds from the issuance of common shares, and we will instead receive or pay cash (in the case of cash settlement) or receive or deliver common shares (in the case of net share settlement). As of the date of this filing, we have not sold any shares or entered into any forward sales agreement under the 2023 ATM program and have common shares having an aggregate offering amount of up to $500.0 million remaining available for sale under the 2023 ATM program.

In May 2022, we created an ATM share offering program through which we could, but had no obligation to, sell common shares for an aggregate offering amount of up to $500.0 million (the "2022 ATM program"). In May 2023, in connection with the creation of the 2023 ATM program, we terminated the 2022 ATM program and did not sell any shares under this program

We have a share repurchase plan approved by our Board of Trust Managers which allows for the repurchase of up to $500.0 million of our common equity securities through open-market purchases, block purchases, and privately negotiated transactions. During the three months ended March 31, 2024, we repurchased 471,282 common shares at an average price of $96.91 per share for approximately $45.7 million. In April 2024, we repurchased 44,692 common shares at an average price of $96.52 per share for approximately $4.3 million. As of the date of this filing, the remaining dollar value of our common equity securities authorized to be repurchased under this plan was approximately $450.0 million.

We currently have an automatic shelf registration statement which allows us to offer common shares, preferred shares, debt securities, or warrants, and our Amended and Restated Declaration of Trust provides we may issue up to 185 million shares of beneficial interest, consisting of 175 million common shares and 10 million preferred shares. At March 31, 2024, we had approximately 106.6 million common shares outstanding, net of treasury shares and shares held in our deferred compensation arrangements, andno preferred shares outstanding.

5. Dispositions

Sale of Operating Property. During the three months ended March 31, 2024, we soldone operating property comprised of 592 apartment homes located in Atlanta, Georgia for approximately $115.0 million and recognized a gain of approximately $43.8 million. We did not sell any operating properties during the three months ended March 31, 2023.

6. Notes Payable

The following is a summary of our indebtedness:

(1)Balance includes $3.8 million and $11.6 million fair value adjustments due to changes in benchmark interest rates related to these notes as of March 31, 2024 and December 31, 2023, respectively. See Note 7, "Derivative Financial Instruments and Hedging Activities," for further discussion.

(2)The 2029 Notes have an effective annual interest rate of approximately 3.84% through June 2026, which includes the effect of a settled forward interest rate swap, and approximately 3.28% thereafter, for an all-in average effective rate of approximately 3.67%.

(3)Unamortized debt discounts, debt issuance costs, and fair market value adjustments of $17.5 million and $5.5 million are included in notes payable as of March 31, 2024 and December 31, 2023, respectively.

We have a $1.2 billion unsecured revolving credit facility which matures in August 2026, with two options to extend the facility at our election for two consecutive six-month periods and to expand the facility up to three times by up to an additional $500 million upon satisfaction of certain conditions. The interest rates on our unsecured revolving credit facility is based upon, at our option, (a) the daily or the one-, three-, or six-month Secured Overnight Financing Rate ("SOFR") plus, in each case, a spread based on our credit rating, or (b) a base rate equal to the higher of: (i) the Federal Funds Rate plus 0.50%, (ii) Bank of America, N.A.'s prime rate, (iii) Term SOFR plus 1.0%, and (iv) 1.0%. Advances under our unsecured revolving credit facility may be priced at the scheduled rates, or we may enter into bid rate loans with participating banks at rates below the scheduled rates. These bid rate loans have terms of 180 days or less and may not exceed the lesser of $600 million or the remaining amount available under our unsecured revolving credit facility. Our unsecured revolving credit facility is subject to customary financial covenants and limitations. We believe we are in compliance with all such financial covenants and limitations as of March 31, 2024 and through the date of this filing.

Our unsecured revolving credit facility provides us with the ability to issue up to $50 million in letters of credit. While our issuance of letters of credit does not increase our borrowings outstanding under our unsecured revolving credit facility, it does reduce the amount available. At March 31, 2024, we had outstanding letters of credit totaling approximately $27.7 million and approximately $1.2 billion available under our unsecured revolving credit facility.

In January 2024, we issued $400.0 million aggregate principal amount of 4.90% senior unsecured notes due January 15, 2034 (the "2034 Notes") under our existing shelf registration statement. The 2034 Notes were offered to the public at 99.638% of their face amount with a stated rate of 4.90% and a yield to maturity of 4.946%. After deducting underwriting discounts and other offering expenses, the net proceeds from the sale of the 2034 Notes was approximately $394.8 million. Interest on the 2034 Notes is payable semi-annually on January 15 and July 15, beginning July 15, 2024. We may redeem the 2034 Notes, in whole or in part, at anytime at a redemption price equal to the principal amount and accrued interest of the notes being redeemed, plus a make-whole provision. If, however, we redeem the 2034 Notes on or after three months prior to their maturity date, the redemption price will equal 100% of the principal amount of the 2034 Notes to be redeemed plus accrued and unpaid interest on the amount being redeemed to the redemption date. The 2034 Notes are direct, senior unsecured obligations and rank equally with all of our other unsecured and unsubordinated indebtedness. In January 2024, we utilized a portion of the net proceeds from the 2034 Notes to repay the $300.0 million,6.21% unsecured term loan due in August 2024 with a one year extension option to August 2025. As a result of the early repayment, we expensed approximately $0.9 million of unamortized loan costs, which are reflected in the loss on early retirement of debt in our condensed consolidated statements of income and comprehensive income.

In January 2024, we utilized cash on hand to repay the principal amount of our 4.36% senior unsecured notes payable, which matured on January 15, 2024, for a total of $250.0 million, plus accrued interest.

We had outstanding floating rate debt of approximately $541.1 million and $848.5 million at March 31, 2024 and December 31, 2023, respectively, which includes the senior unsecured notes payable due in 2026 which have been converted to floating rate debt through the issuance of an interest rate swap. The weighted average interest rate on such debt was approximately 6.7% for the three months ended March 31, 2024 and approximately 6.5% at December 31, 2023.

Our indebtedness had a weighted average maturity of approximately 6.6 years at March 31, 2024. The table below is a summary of the maturity dates of our outstanding debt and principal amortizations, and the weighted average interest rates on such debt, at March 31, 2024:

(1)Includes all available extension options.

(2)Includes amortization of debt discounts, debt issuance costs, and fair market value adjustments.

(3)Includes the effects of the applicable settled derivatives.

7. Derivative Financial Instruments and Hedging Activities

Risk Management Objective of Using Derivatives. We are exposed to certain risks arising from both our business operations and economic conditions. We manage economic risks, including interest rate, liquidity, and credit risk, primarily by managing the amount, sources, and duration of our debt funding and the use of derivative financial instruments. Specifically, we may enter into derivative financial instruments to manage exposures arising from business activities resulting in differences in the amount, timing, and duration of our known or expected cash payments related to our borrowings. We do not utilize derivative financial instruments for trading or speculative purposes. See Note 2, "Summary of Significant Accounting Policies and Recent Accounting Pronouncements" for a further discussion of derivative financial instruments.

Cash Flow Hedges. From time to time, we enter into designated cash flow hedges to manage the variability in cash flows due to changes in benchmark interest rates. We enter into interest rate swap agreements, including forward interest rate swaps and treasury locks, settled in cash based upon the difference between an agreed-upon benchmark rate and the prevailing benchmark rate at settlement. The agreements are generally settled around the time of the pricing of the related debt. Each cash flow derivative gain or loss is recorded to OCI and is subsequently reclassified to interest expense over the life of the related debt. We did not have any cash flow hedges at March 31, 2024 or material cash flow hedges at December 31, 2023.

During each of the three months ended March 31, 2024 and 2023, approximately $0.3 million was reclassified from AOCI as an increase to interest expense for derivative financial instruments settled in prior periods.

Fair Value Hedges. From time to time, we utilize interest rate swaps to achieve an additional level of floating rate debt relative to fixed rate debt as we deem appropriate. We designate fixed to floating interest rate swaps as fair value hedges. The changes in fair values of these derivative instruments and the offsetting changes in fair values of the underlying hedged debt due to changes in the relevant benchmark interest rates are recorded in interest expense. At March 31, 2024 and December 31,

2023, we had one interest rate swap with a notional amount of $500.0 million designated as a fair value hedge, which converts our $500.0 million principal amount of 5.85% fixed rate senior unsecured notes due November 2026 into a floating rate instrument with an interest rate based on a SOFR index.

Refer to Note 12, "Fair Value Measurements" for the outstanding derivative instruments and the corresponding fair value classifications.

8. Share-Based Compensation and Non-Qualified Deferred Compensation Plan

Incentive Compensation. We currently maintain the 2018 Share Incentive Plan (the "2018 Share Plan"), which was approved by our shareholders. The shares available for awards under the 2018 Share Plan are, subject to certain other limits under the plan, generally available for any type of award authorized under the 2018 Share Plan including stock options, stock appreciation rights, restricted stock awards, stock bonuses, and other stock-based awards. Persons eligible to receive awards under the 2018 Share Plan include our and our subsidiaries' officers and employees, Trust Managers, and certain of our and our subsidiaries' consultants and advisors. A total of 9.7 million shares ("Share Limit") was authorized under the 2018 Share Plan. Shares issued or to be issued are counted against the Share Limit as (1)3.45 to 1.0 for every share award, excluding stock options and share appreciation rights, granted, and (2) 1.0 to 1.0 for every share of stock option or share appreciation right granted. As of March 31, 2024, there were approximately 4.3 million common shares available under the 2018 Share Plan, which would result in approximately 1.3 million shares which could be granted pursuant to full value awards conversion ratios as defined under the plan.

Total compensation cost for share awards charged against income was approximately $3.5 million and $3.9 million for the three months ended March 31, 2024 and 2023, respectively. Total capitalized compensation costs for share awards were approximately $1.2 million and $1.7 million for the three months ended March 31, 2024 and 2023, respectively.

A summary of activity under our share incentive plans for the three months ended March 31, 2024 is shown below:

Share Awards and Vesting. Share awards for employees generally vest over three years and are valued at the market value of the shares on the grant date. In the event the holder of the share awards attains at least age 65, and with respect to employees, also attain at least ten or more years of service ("Retirement Eligibility") before the term in which the awards are scheduled to vest, the value of the share awards is amortized from the date of grant to the individual's Retirement Eligibility date. All new share awards granted after reaching Retirement Eligibility vest on the date of grant.

The weighted average fair value of share awards granted during the three months ended March 31, 2024 and 2023 was $95.41 per share and $117.56 per share, respectively. The total fair value of shares vested was approximately $21.7 million and $20.2 million during the three months ended March 31, 2024 and 2023, respectively. At March 31, 2024, the unamortized value of previously issued unvested share awards was approximately $22.2 million which is expected to be amortized over the next three years.

9. Net Change in Operating Accounts

The effect of changes in the operating and other accounts on cash flows from operating activities is as follows: