Fair Value

12 Months Ended

Dec. 31, 2023

Financial Instruments Carried at Fair Value

Derivative Financial Instruments

The Company uses Hedging Derivatives to manage its interest rate risk. These instruments are carried at fair value in the Company's financial statements. The Company minimizes its credit risk on these transactions by dealing with major, creditworthy financial institutions which have an A or better credit rating by the Standard & Poor's Ratings Group or equivalent, and monitors the credit ratings of counterparties and the exposure of the Company to any single entity. The Company believes the likelihood of realizing losses from counterparty nonperformance is remote. Although the Company has determined that the majority of the inputs used to value its derivatives fall within Level 2 of the fair value hierarchy, such as interest rate, term to maturity and volatility, the credit valuation adjustments associated with its derivatives use Level 3 inputs, such as estimates of current credit spreads, which the Company concluded are not significant. As a result, the Company has determined that its derivative valuations are classified in Level 2 of the fair value hierarchy.

The following table summarizes the consolidated derivative positions at December 31, 2023 (dollars in thousands):


	Non-designated Hedges			Cash Flow Hedges
	Interest Rate Caps			Interest Rate Swaps
Notional balance	$	632,215		$	200,000
Weighted average interest rate (1)	5.5		%	N/A
Weighted average capped/swapped interest rate	6.5		%	3.1		%
Earliest maturity date	January 2024			February 2024
Latest maturity date	January 2027			June 2024

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(1) For debt hedged by interest rate caps, represents the weighted average interest rate on the hedged debt prior to any impact of the associated interest rate caps.

The following derivative activity occurred during the year ended December 31, 2023:

•In connection with the issuance of the Company's $400,000,000 unsecured notes in December 2023 maturing in 2033, the Company terminated $250,000,000 of forward interest rate swap agreements designated as cash flow hedges of the interest rate variability on the issuance of unsecured notes, receiving payments of $8,331,000 which will be recognized over the life of the unsecured notes as a reduction in the effective interest rate. All of the positions settled by the Company were forward interest rate swaps that the Company had entered into during 2023. The Company has deferred these gains in accumulated other comprehensive income on the accompanying Consolidated Balance Sheets, and is recognizing the impact as a component of interest expense, net, over the term of the respective hedged debt.

•In addition, the Company entered into $200,000,000 of forward interest rate swap agreements to reduce the impact of variability in interest rates on a portion of the Company's anticipated future debt issuance activity in 2024. The

Company expects to cash settle the swaps and either pay or receive cash for the then current fair value. Assuming that the Company issues the debt as expected, the hedging impact from these positions will then be recognized over the life of the issued debt as a yield adjustment.

The Company had certain derivatives not designated as hedges during the years ended December 31, 2023, 2022 and 2021, for which fair value changes during each of the respective years were not material.

Cash flow hedge losses reclassified from accumulated other comprehensive income into earnings were $1,360,000, $3,883,000 and $13,151,000 for the year ended December 31, 2023, 2022 and 2021, respectively.

The Company anticipates reclassifying approximately $582,000 of net hedging losses from accumulated other comprehensive income into earnings within the next 12 months as an offset to the hedged item during this period.

Redeemable Noncontrolling Interests

During the year ended December 31, 2023, 7,500 DownREIT units were redeemed for cash by the Company in conjunction with the sale of Avalon at Newton Highlands. Under the DownREIT agreement, for each limited partnership unit, the limited partner was entitled to receive cash in the amount equal to the fair value of the Company's common stock on or about the date of redemption. The limited partnership units in the DownREIT were valued using the market price of the Company's common stock, a Level 1 price under the fair value hierarchy.

Equity Securities

The Company has direct equity investments in property technology and environmentally focused companies. These investments are accounted for using the measurement alternative and are valued at the market price of observable transactions.

Financial Instruments Not Carried at Fair Value

Cash, Cash Equivalents and Restricted Cash

Cash, cash equivalent and restricted cash balances are held with various financial institutions within accounts designed to preserve principal. The Company monitors credit ratings of these financial institutions and the concentration of cash, cash equivalent and restricted cash balances with any one financial institution and believes the likelihood of realizing material losses related to cash, cash equivalent and restricted cash balances is remote. Cash, cash equivalent and restricted cash are carried at their face amounts, which reasonably approximate their fair values and are Level 1 within the fair value hierarchy.

Other Financial Instruments

Rents and other receivables and prepaid expenses, accounts and construction payable and accrued expenses and other liabilities are carried at their face amounts, which reasonably approximate their fair values. The Company determined that its notes receivables approximate fair value, because interest rates, yields and other terms are consistent with interest rates, yields and other terms currently available for similar instruments and are considered to be a Level 2 price within the fair value hierarchy.

Indebtedness

The Company values its fixed rate unsecured notes using quoted market prices, a Level 1 price within the fair value hierarchy. The Company values its mortgage notes payable, variable rate unsecured notes, including the Term Loan, and any outstanding amounts under the Credit Facility and Commercial Paper Program using a discounted cash flow analysis on the expected cash flows of each instrument. This analysis reflects the contractual terms of the instrument, including the period to maturity, and uses observable market-based inputs, including interest rate curves. The process also considers credit valuation adjustments to appropriately reflect the Company's nonperformance risk. The Company has concluded that the value of its mortgage notes payable, variable rate unsecured notes, Term Loan and any outstanding amounts under the Credit Facility and Commercial Paper Program are Level 2 prices as the majority of the inputs used to value its positions fall within Level 2 of the fair value hierarchy.

Financial Instruments Measured/Disclosed at Fair Value on a Recurring Basis

The following tables summarize the classification between the three levels of the fair value hierarchy of the Company's financial instruments measured/disclosed at fair value on a recurring basis (dollars in thousands):


Description	Total Fair Value		Quoted Prices in Active Markets for Identical Assets (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)
	December 31, 2023
Assets
Investments
Notes Receivable, net	$	118,127	$	—	$	118,127	$	—
Non Designated Hedges
Interest Rate Caps	85		—		85		—
Interest Rate Swaps - Assets	5,163		—		5,163		—
Total Assets	$	123,375	$	—	$	123,375	$	—

Liabilities
Interest Rate Swaps - Liabilities	$	162	$	—	$	162	$	—
Indebtedness
Fixed rate unsecured notes	6,716,631		6,716,631		—		—
Mortgage notes payable and Commercial Paper Program	644,313		—		644,313		—
Total Liabilities	$	7,361,106	$	6,716,631	$	644,475	$	—

	December 31, 2022
Assets
Investments
Notes Receivable, net	$	28,860	$	—	$	28,860	$	—
Non Designated Hedges
Interest Rate Caps	455		—		455		—
Total Assets	$	29,315	$	—	$	29,315	$	—

Liabilities
DownREIT units	$	1,211	$	1,211	$	—	$	—
Indebtedness
Fixed rate unsecured notes	6,653,681		6,653,681		—		—
Mortgage notes payable, Commercial Paper Program and variable rate unsecured note	768,984		—		768,984		—
Total Liabilities	$	7,423,876	$	6,654,892	$	768,984	$	—

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

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