10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_____________________________________________________________________________________________

FORM 10-Q

_____________________________________________________________________________________________

(Mark One)

☒ Quarterly Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the quarterly period ended September 30, 2024

or

☐ Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

For the transition period from                      to                     

_____________________________________________________________________________________________

Brandywine Realty Trust

Brandywine Operating Partnership, L.P.

(Exact name of registrant as specified in its charter)

_____________________________________________________________________________________________

Registrant’s telephone number, including area code (610) 325-5600

_____________________________________________________________________________________________

Maryland
(Brandywine Realty Trust)	001-9106	23-2413352
Delaware
(Brandywine Operating Partnership, L.P.)	000-24407	23-2862640
(State or Other Jurisdiction of Incorporation or Organization)	(Commission file number)	(I.R.S. Employer Identification Number)

2929 Arch Street
Suite 1800
Philadelphia, PA 19104
(Address of principal executive offices) (Zip Code)

(610) 325-5600
(Registrant’s telephone number, including area code)

Securities registered pursuant to section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Shares of Beneficial Interest	BDN	NYSE

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.

Brandywine Realty Trust	Yes	☒  No ☐
Brandywine Operating Partnership, L.P.	Yes	☒  No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files).

Brandywine Realty Trust	Yes	☒  No ☐
Brandywine Operating Partnership, L.P.	Yes	☒  No ☐

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, “smaller reporting company”, and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Brandywine Realty Trust:

Large accelerated filer	☒	Accelerated filer ☐	Non-accelerated filer ☐
Smaller reporting company	☐	Emerging growth company	☐

Brandywine Operating Partnership, L.P.:

Large accelerated filer	☐	Accelerated filer ☐	Non-accelerated filer	☒
Smaller reporting company	☐	Emerging growth company	☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).

Brandywine Realty Trust	Yes	☐	No ☒
Brandywine Operating Partnership, L.P.	Yes	☐	No ☒

A total of 172,666,038 Common Shares of Beneficial Interest, par value $0.01 per share of Brandywine Realty Trust, were outstanding as of October 31, 2024.

EXPLANATORY NOTE

This report combines the quarterly reports on Form 10-Q for the period ended September 30, 2024 of Brandywine Realty Trust (the “Parent Company”) and Brandywine Operating Partnership L.P. (the “Operating Partnership”). The Parent Company is a Maryland real estate investment trust, or REIT, that owns its assets and conducts its operations through the Operating Partnership, a Delaware limited partnership, and subsidiaries of the Operating Partnership. The Parent Company, the Operating Partnership and their consolidated subsidiaries are collectively referred to in this report as the “Company”. In addition, as used in this report, terms such as “we”, “us”, and “our” may refer to the Company, the Parent Company, or the Operating Partnership.

The Parent Company is the sole general partner of the Operating Partnership and, as of September 30, 2024, owned a 99.7% interest in the Operating Partnership. The remaining 0.3% interest consists of common units of limited partnership interest issued by the Operating Partnership to third parties in exchange for contributions of properties to the Operating Partnership. As the sole general partner of the Operating Partnership, the Parent Company has full and complete authority over the Operating Partnership’s day-to-day operations and management.

Management operates the Parent Company and the Operating Partnership as one enterprise. The management of the Parent Company consists of the same members as the management of the Operating Partnership.

As general partner with control of the Operating Partnership, the Parent Company consolidates the Operating Partnership for financial reporting purposes, and the Parent Company does not have significant assets other than its investment in the Operating Partnership. Therefore, the assets and liabilities of the Parent Company and the Operating Partnership are the same on their respective financial statements. The separate discussions of the Parent Company and the Operating Partnership in this report should be read in conjunction with each other to understand the results of the Company’s operations on a consolidated basis and how management operates the Company.

The Company believes that combining the quarterly reports on Form 10-Q of the Parent Company and the Operating Partnership into a single report will:

•facilitate a better understanding by the investors of the Parent Company and the Operating Partnership by enabling them to view the business as a whole in the same manner as management views and operates the business;

•remove duplicative disclosures and provide a more straightforward presentation in light of the fact that a substantial portion of the disclosure applies to both the Parent Company and the Operating Partnership; and

•create time and cost efficiencies through the preparation of one combined report instead of two separate reports.

There are few differences between the Parent Company and the Operating Partnership, which are reflected in the footnote disclosures in this report. The Company believes it is important to understand the differences between the Parent Company and the Operating Partnership in the context of how these entities operate as an interrelated consolidated company. The Parent Company is a REIT, whose only material asset is its ownership of partnership interests of the Operating Partnership. As a result, the Parent Company does not conduct business itself, other than acting as the sole general partner of the Operating Partnership, issuing equity from time to time (and contributing the net proceeds of such issuances to the Operating Partnership) and guaranteeing the debt obligations of the Operating Partnership. The Operating Partnership holds substantially all the assets of the Company, including the Company’s ownership interests in the real estate ventures described below. The Operating Partnership conducts the operations of the Company’s business and is structured as a partnership with no publicly traded equity. Except for net proceeds from equity issuances by the Parent Company, which are contributed to the Operating Partnership in exchange for partnership units, the Operating Partnership generates the capital required by the Company’s business through the Operating Partnership’s operations, by the Operating Partnership’s incurrence of indebtedness (directly and through subsidiaries) and through the issuance of partnership units of the Operating Partnership or equity interests in subsidiaries of the Operating Partnership.

The equity and non-controlling interests in the Parent Company and the Operating Partnership’s equity are the main areas of difference between the consolidated financial statements of the Parent Company and the Operating Partnership. The common units of limited partnership interest in the Operating Partnership are accounted for as partners’ equity in the Operating Partnership’s financial statements while the common units of limited partnership interests held by parties other than the Parent Company are presented as non-controlling interests in the Parent Company’s financial statements. The differences between the Parent Company and the Operating Partnership’s equity relate to the differences in the equity issued at the Parent Company and Operating Partnership levels.

2

To help investors understand the differences between the Parent Company and the Operating Partnership, this report presents the following as separate notes or sections for each of the Parent Company and the Operating Partnership:

•Consolidated Financial Statements; and

•Notes to the Parent Company’s and Operating Partnership’s Equity.

This report also includes separate Item 4. (Controls and Procedures) disclosures and separate Exhibit 31 and 32 certifications for each of the Parent Company and the Operating Partnership in order to establish that the Chief Executive Officer and the Chief Financial Officer of each entity have made the requisite certifications and that the Parent Company and Operating Partnership are compliant with Rule 13a-15 or Rule 15d-15 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and 18 U.S.C. § 1350.

In order to highlight the differences between the Parent Company and the Operating Partnership, the separate sections in this report for the Parent Company and the Operating Partnership specifically refer to the Parent Company and the Operating Partnership. In the sections that combine disclosures of the Parent Company and the Operating Partnership, this report refers to such disclosures as those of the Company. Although the Operating Partnership is generally the entity that directly or indirectly enters into contracts and real estate ventures and holds assets and incurs debt, reference to the Company is appropriate because the business is one enterprise and the Parent Company operates the business through the Operating Partnership.

3

TABLE OF CONTENTS

	Page
PART I — FINANCIAL INFORMATION
Item 1. Financial Statements
Brandywine Realty Trust
Financial Statements of Brandywine Realty Trust	6
Consolidated Balance Sheets as of September 30, 2024 and December 31, 2023	6
Consolidated Statements of Operations for the nine months ended September 30, 2024 and 2023	7
Consolidated Statements of Comprehensive Income for the nine months ended September 30, 2024 and 2023	8
Consolidated Statements of Beneficiaries’ Equity for the nine months ended September 30, 2024 and 2023	9
Consolidated Statements of Cash Flows for the nine months ended September 30, 2024 and 2023	11
Brandywine Operating Partnership, L.P.
Financial Statements of Brandywine Operating Partnership, L.P.	12
Consolidated Balance Sheets as of September 30, 2024 and December 31, 2023	12
Consolidated Statements of Operations for the nine months ended September 30, 2024 and 2023	13
Consolidated Statements of Comprehensive Income for the nine months ended September 30, 2024 and 2023	14
Consolidated Statements of Partners’ Equity for the nine months ended September 30, 2024 and 2023	15
Consolidated Statements of Cash Flows for the nine months ended September 30, 2024 and 2023	17
Notes to Unaudited Consolidated Financial Statements	18
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	33
Item 3. Quantitative and Qualitative Disclosures about Market Risk	48
Item 4. Controls and Procedures	50
PART II — OTHER INFORMATION	51
Item 1. Legal Proceedings	51
Item 1A. Risk Factors	51
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	51
Item 3. Defaults Upon Senior Securities	51
Item 4. Mine Safety Disclosures	51
Item 5. Other Information	51
Item 6. Exhibits	52
Signatures	53

Filing Format

This combined Form 10-Q is being filed separately by Brandywine Realty Trust and Brandywine Operating Partnership, L.P.

4

Glossary

Defined terms used in this Report:

Average annual rent	Represents total initial contractual rental rate under the applicable leases (as impacted by free rent) plus contractual fixed rent increases due under the applicable leases averaged over the total terms (without regard to extension options) of the applicable leases. For comparison purposes, the Company excludes new leases of space when the previous lease of such space ended more than 12 months prior to the signing date for the new leases.
Core Portfolio/Core Properties	Includes all wholly-owned operating properties.
Funds From Operations (FFO)	Is a non-GAAP financial measure,which the Company believes is useful to investors. The Company computes FFO in accordance with standards established by the National Association of Real Estate Investment Trusts (NAREIT), which may not be comparable to FFO reported by other REITs that do not compute FFO in accordance with the NAREIT definition, or that interpret the NAREIT definition differently than the Company. NAREIT defines FFO as net income (loss) before noncontrolling interests of unitholders (preferred and common) and excluding gains (losses) on sales of depreciable operating property, impairment losses on depreciable consolidated real estate, impairment losses on investments in unconsolidated real estate ventures and extraordinary items (computed in accordance with GAAP); plus real estate related depreciation and amortization (excluding amortization of deferred financing costs), and after adjustment for unconsolidated real estate ventures. Net income, the GAAP measure that the Company believes to be most directly comparable to FFO, includes depreciation and amortization expenses, gains or losses on property sales and noncontrolling interests. FFO per share is calculated by dividing FFO by fully diluted shares available to common shareholders and limited partnership unitholders. See Management’s Discussion and Analysis of Financial Condition and Results of Operations in Item 2 of this Report for a reconciliation of net income attributable to common shares and common unitholders to FFO.
Net Operating Income (NOI)	Is a non-GAAP financial measure, which the Company defines as total property revenue less property operating expenses, real estate taxes and third-party management expenses. Property operating expenses that are included in determining NOI consist of costs that are necessary and allocable to our operating properties such as utilities, property-level salaries, repairs and maintenance, property insurance and management fees. General and administrative expenses that are not reflected in NOI primarily consist of corporate-level salaries, amortization of share awards and professional fees that are incurred as part of corporate office management. NOI is a non-GAAP financial measure that we report because we believe it is useful to our investors. See Note 13, “Segment Information,” to our Consolidated Financial Statements for a reconciliation of NOI to our consolidated net income as defined by GAAP.
Rental Rate	Includes base rent plus reimbursement for operating expenses and real estate taxes.
Same Store Properties	We refer to properties acquired or placed in-service prior to the beginning of the earliest period presented and owned by us through the end of the latest period presented as Same Store Properties. Same Store Properties therefore exclude properties placed in-service, acquired, repositioned, held for sale or in development or redevelopment after the beginning of the earliest period presented or disposed of prior to the end of the latest period presented. Accordingly, it takes at least one year and one quarter after a property is acquired for that property to be included in Same Store Properties.

5

PART I - FINANCIAL INFORMATION

Item 1. — Financial Statements

BRANDYWINE REALTY TRUST

CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands, except share and per share information)

	September 30, 2024		December 31, 2023
ASSETS
Real estate investments:
Operating properties	$	3,409,605	$	3,542,232
Accumulated depreciation	(1,156,992)		(1,131,792)
Right of use asset - operating leases, net	18,565		19,031
Operating real estate investments, net	2,271,178		2,429,471
Construction-in-progress	166,278		135,529
Land held for development	78,259		82,510
Prepaid leasehold interests in land held for development, net	27,762		27,762
Total real estate investments, net	2,543,477		2,675,272
Cash and cash equivalents	36,498		58,319
Restricted cash and escrows	6,195		9,215
Accounts receivable	8,669		11,977
Accrued rent receivable, net of allowance of $1,332 and $2,672 as of September 30, 2024 and December 31, 2023, respectively	187,873		186,708
Investment in unconsolidated real estate ventures	602,700		601,227
Deferred costs, net	86,390		95,984
Intangible assets, net	6,249		7,694
Other assets	121,509		86,051
Total assets	$	3,599,560	$	3,732,447
LIABILITIES AND BENEFICIARIES' EQUITY
Secured debt, net	$	272,181	$	255,671
Unsecured credit facility	40,000		—
Unsecured term loans, net	331,797		318,499
Unsecured senior notes, net	1,617,795		1,564,662
Accounts payable and accrued expenses	137,406		123,825
Distributions payable	26,230		26,017
Deferred income, gains and rent	21,453		24,248
Intangible liabilities, net	7,558		8,270
Lease liability - operating leases	23,502		23,369
Other liabilities	16,908		63,729
Total liabilities	$	2,494,830	$	2,408,290
Commitments and contingencies (See Note 14)
Brandywine Realty Trust's Equity:
Common Shares of Brandywine Realty Trust's beneficial interest, $0.01 par value; shares authorized 400,000,000; 172,665,995 and 172,097,661 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	1,724		1,719
Additional paid-in-capital	3,178,214		3,163,949
Deferred compensation payable in common shares	20,456		19,965
Common shares in grantor trust, 1,221,333 and 1,194,127 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	(20,456)		(19,965)
Cumulative earnings	827,991		979,406
Accumulated other comprehensive loss	(3,773)		(668)
Cumulative distributions	(2,905,554)		(2,827,022)
Total Brandywine Realty Trust's equity	1,098,602		1,317,384
Noncontrolling interests	6,128		6,773
Total beneficiaries' equity	$	1,104,730	$	1,324,157
Total liabilities and beneficiaries' equity	$	3,599,560	$	3,732,447

The accompanying notes are an integral part of these consolidated financial statements.

6

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited, in thousands, except share and per share information)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Revenue
Rents	$	117,958	$	121,661	$	354,975	$	360,642
Third party management fees, labor reimbursement and leasing	6,093		6,553		17,685		18,782
Other	7,731		1,158		10,952		5,057
Total revenue	131,782		129,372		383,612		384,481
Operating expenses
Property operating expenses	31,900		31,123		95,532		96,608
Real estate taxes	11,892		12,808		37,019		38,981
Third party management expenses	2,487		2,468		7,456		7,664
Depreciation and amortization	44,301		48,966		133,530		141,645
General and administrative expenses	12,681		8,069		32,726		26,911
Provision for impairment	37,980		11,666		44,407		16,134
Total operating expenses	141,241		115,100		350,670		327,943
Gain on sale of real estate
Net gain on sale of undepreciated real estate	—		—		—		781
Total gain on sale of real estate	—		—		—		781
Operating income (loss)	(9,459)		14,272		32,942		57,319
Other income (expense):
Interest and investment income	639		293		2,572		1,318
Interest expense	(30,561)		(24,355)		(85,104)		(70,677)
Interest expense - amortization of deferred financing costs	(1,247)		(1,110)		(3,753)		(3,251)
Equity in loss of unconsolidated real estate ventures	(125,862)		(10,739)		(153,957)		(24,504)
Net gain on real estate venture transactions	770		—		54,503		181
Gain on early extinguishment of debt	—		—		941		—
Net loss before income taxes	(165,720)		(21,639)		(151,856)		(39,614)
Income tax benefit (provision)	—		3		(11)		(35)
Net loss	(165,720)		(21,636)		(151,867)		(39,649)
Net loss attributable to noncontrolling interests	500		82		452		140
Net loss attributable to Brandywine Realty Trust	(165,220)		(21,554)		(151,415)		(39,509)
Nonforfeitable dividends allocated to unvested restricted shareholders	(276)		(159)		(889)		(433)
Net loss attributable to Common Shareholders of Brandywine Realty Trust	$	(165,496)	$	(21,713)	$	(152,304)	$	(39,942)
Basic loss per Common Share	$	(0.96)	$	(0.13)	$	(0.88)	$	(0.23)
Diluted loss per Common Share	$	(0.96)	$	(0.13)	$	(0.88)	$	(0.23)
Basic weighted average shares outstanding	172,668,731		172,097,661		172,480,325		171,912,552
Diluted weighted average shares outstanding	172,668,731		172,097,661		172,480,325		171,912,552

 

The accompanying notes are an integral part of these consolidated financial statements.

7

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited, in thousands)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Net loss	$	(165,720)	$	(21,636)	$	(151,867)	$	(39,649)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	(9,919)		2,885		(3,112)		4,240
Total comprehensive income (loss)	(9,919)		2,885		(3,112)		4,240
Comprehensive loss	(175,639)		(18,751)		(154,979)		(35,409)
Comprehensive loss attributable to noncontrolling interest	529		106		459		128
Comprehensive loss attributable to Brandywine Realty Trust	$	(175,110)	$	(18,645)	$	(154,520)	$	(35,281)

The accompanying notes are an integral part of these consolidated financial statements.

8

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF BENEFICIARIES’ EQUITY

(unaudited, in thousands, except number of shares)

	Number of Common Shares	Number of Rabbi Trust/Deferred  Compensation Shares	Common Shares of  Brandywine Realty Trust's beneficial interest		Additional Paid-in Capital		Deferred Compensation  Payable in Common  Shares		Common Shares in  Grantor Trust		Cumulative Earnings		Accumulated Other Comprehensive Income (Loss)		Cumulative Distributions		Noncontrolling Interests		Total
BALANCE, December 31, 2023	172,097,661	1,194,127	$	1,719	$	3,163,949	$	19,965	$	(19,965)	$	979,406	$	(668)	$	(2,827,022)	$	6,773	$	1,324,157
Net loss											(16,368)						(46)		(16,414)
Other comprehensive income													6,007				19		6,026
Share-based compensation activity	194,480	7,148	2		4,829														4,831
Share Issuance from/(to) Deferred Compensation Plan	(21,234)	(56,154)			(100)		31		(31)										(100)
Reallocation of Noncontrolling interest					(17)												17		—
Distributions declared $0.15 per share)															(26,177)		(77)		(26,254)
BALANCE, March 31, 2024	172,270,907	1,145,121	$	1,721	$	3,168,661	$	19,996	$	(19,996)	$	963,038	$	5,339	$	(2,853,199)	$	6,686	$	1,292,246
Net income											30,173						94		30,267
Other comprehensive income													778				3		781
Repurchase and retirement of Common Shares of Beneficial Interest																			—
Share-based compensation activity	407,226	107,389	3		2,356														2,359
Share Issuance from/(to) Deferred Compensation Plan	(43)	(43)					460		(460)										—
Reallocation of Noncontrolling interest					(6)												6		—
Distributions declared $0.15 per share)															(26,179)		(77)		(26,256)
BALANCE, June 30, 2024	172,678,090	1,252,467	$	1,724	$	3,171,011	$	20,456	$	(20,456)	$	993,211	$	6,117	$	(2,879,378)	$	6,712	$	1,299,397
Net loss											(165,220)						(500)		(165,720)
Other comprehensive loss													(9,890)				(29)		(9,919)
Share-based compensation activity					7,284														7,284
Share Issuance from/(to) Deferred Compensation Plan	(12,095)	(31,134)			(59)														(59)
Reallocation of Noncontrolling interest					(22)												22		—
Distributions declared $0.15 per share)															(26,176)		(77)		(26,253)
BALANCE, September 30, 2024	172,665,995	1,221,333	1,724		3,178,214		20,456		(20,456)		827,991		(3,773)		(2,905,554)		6,128		1,104,730

The accompanying notes are an integral part of these consolidated financial statements.

9

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENT OF BENEFICIARIES’ EQUITY

(unaudited, in thousands, except number of shares)

	Number of Common Shares	Number of Rabbi Trust/Deferred Compensation Shares	Common Shares of Brandywine Realty Trust's beneficial interest		Additional Paid-in Capital		Deferred Compensation  Payable in Common  Shares		Common Shares in  Grantor Trust		Cumulative Earnings		Accumulated Other Comprehensive Income (Loss)		Cumulative Distributions		Noncontrolling Interests		Total
BALANCE, December 31, 2022	171,569,807	1,179,643	$	1,716	$	3,153,229	$	19,601	$	(19,601)	$	1,176,195	$	3,897	$	(2,709,405)	$	7,702	$	1,633,334
Net loss											(5,259)						(17)		(5,276)
Other comprehensive income (loss)													(5,307)				16		(5,291)
Share-based compensation activity	171,318	22,449	1		3,370														3,371
Share Issuance from/(to) Deferred Compensation Plan	(13,422)	(48,733)			(88)		145		(145)										(88)
Reallocation of Noncontrolling interest					(4)												4		—
Distributions declared ($0.19 per share)															(32,734)		(98)		(32,832)
BALANCE, March 31, 2023	171,727,703	1,153,359	$	1,717	$	3,156,507	$	19,746	$	(19,746)	$	1,170,936	$	(1,410)	$	(2,742,139)	$	7,607	$	1,593,218
Net loss											(12,696)						(41)		(12,737)
Other comprehensive income													6,626				20		6,646
Share-based compensation activity	374,226	54,056	2		2,614														2,616
Share Issuance from/(to) Deferred Compensation Plan							219		(219)										—
Reallocation of Noncontrolling interest					155												(155)		—
Distributions declared ($0.19 per share)															(32,985)		(98)		(33,083)
BALANCE, June 30, 2023	172,101,929	1,207,415	$	1,719	$	3,159,276	$	19,965	$	(19,965)	$	1,158,240	$	5,216	$	(2,775,124)	$	7,333	$	1,556,660
Net loss											(21,554)						(82)		(21,636)
Other comprehensive income (loss)													2,909				(24)		2,885
Share-based compensation activity					2,506														2,506
Share Issuance from/(to) Deferred Compensation Plan	(4,268)	(13,288)			(20)														(20)
Reallocation of Noncontrolling interest					(194)												194		—
Distributions declared $0.15 per share)															(25,950)		(77)		(26,027)
BALANCE, September 30, 2023	172,097,661	1,194,127	1,719		3,161,568		19,965		(19,965)		1,136,686		8,125		(2,801,074)		7,344		1,514,368

The accompanying notes are an integral part of these consolidated financial statements.

10

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands) 

	Nine Months Ended September 30,
	2024		2023
Cash flows from operating activities:
Net loss	$	(151,867)	$	(39,649)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	133,530		141,645
Amortization of deferred financing costs	3,753		3,251
Amortization of debt discount/(premium), net	(2,540)		(774)
Amortization of stock compensation costs	13,068		8,305
Straight-line rent income	(5,745)		(6,612)
Amortization of acquired above (below) market leases, net	(706)		(993)
Ground rent expense	589		601
Net gain on real estate venture transactions	(54,503)		(181)
Total gain on sale of real estate	—		(781)
Gain on early extinguishment of debt	(941)		—
Provision for impairment	44,407		16,134
Loss from unconsolidated real estate ventures, including income distributions	153,957		24,504
Income tax provision	11		35
Changes in assets and liabilities:
Accounts receivable	1,787		(2,362)
Other assets	(14,343)		(24,619)
Accounts payable and accrued expenses	4,851		(8,992)
Deferred income, gains and rent	(1,740)		(1,196)
Other liabilities	634		3,089
Net cash provided by operating activities	124,202		111,405
Cash flows from investing activities:
Proceeds from the sale of properties	45,250		51,285
Capital expenditures for tenant improvements	(55,214)		(34,219)
Capital expenditures for redevelopments	(8,747)		(42,592)
Capital expenditures for developments	(29,580)		(30,149)
Advances for the purchase of tenant assets, net of repayments	1,377		(9,292)
Investment in unconsolidated real estate ventures	(143,751)		(72,715)
Deposits for real estate	—		3,500
Capital distributions from unconsolidated real estate ventures	3,941		2,700
Leasing costs paid	(6,307)		(7,969)
Net cash used in investing activities	(193,031)		(139,451)
Cash flows from financing activities:
Proceeds from credit facility borrowings	131,000		172,000
Repayments of credit facility borrowings	(91,000)		(260,500)
Proceeds from unsecured notes	400,000		—
Repayments of unsecured notes	(339,059)		(54,301)
Proceeds from unsecured term loan	13,000		70,000
Proceeds from secured term loan	—		245,000
Proceeds from construction loan	15,943		—
Debt financing costs paid	(6,334)		(4,371)
Shares used for employee taxes upon vesting of share awards	(1,028)		(952)
Distributions paid to shareholders	(78,303)		(98,306)
Distributions to noncontrolling interest	(231)		(294)
Net cash provided by financing activities	43,988		68,276
Increase/(Decrease) in cash and cash equivalents and restricted cash	(24,841)		40,230
Cash and cash equivalents and restricted cash at beginning of period	67,534		18,387
Cash and cash equivalents and restricted cash at end of period	$	42,693	$	58,617
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	$	58,319	$	17,551
Restricted cash, beginning of period	9,215		836
Cash and cash equivalents and restricted cash, beginning of period	$	67,534	$	18,387
Cash and cash equivalents, end of period	$	36,498	$	47,872
Restricted cash, end of period	6,195		10,745
Cash and cash equivalents and restricted cash, end of period	$	42,693	$	58,617
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2024 and 2023 of $13,866 and $12,602, respectively	$	86,398	$	73,217
Cash paid for income taxes	—		550
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	26,230		26,027
Change in investment in real estate ventures as a result of deconsolidation	—		8,595
Change in operating real estate from deconsolidation of operating properties	—		(7,814)
Change in notes receivable from sale of properties	19,919		—
Change in capital expenditures financed through accounts payable at period end	8,383		4,276
Change in capital expenditures financed through retention payable at period end	(2,331)		2,587

The accompanying notes are an integral part of these consolidated financial statements.

11

BRANDYWINE OPERATING PARTNERSHIP, L.P.

CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands, except unit and per unit information)

	September 30, 2024		December 31, 2023
ASSETS
Real estate investments:
Operating properties	$	3,409,605	$	3,542,232
Accumulated depreciation	(1,156,992)		(1,131,792)
Right of use asset - operating leases, net	18,565		19,031
Operating real estate investments, net	2,271,178		2,429,471
Construction-in-progress	166,278		135,529
Land held for development	78,259		82,510
Prepaid leasehold interests in land held for development, net	27,762		27,762
Total real estate investments, net	2,543,477		2,675,272
Cash and cash equivalents	36,498		58,319
Restricted cash and escrows	6,195		9,215
Accounts receivable	8,669		11,977
Accrued rent receivable, net of allowance of $1,332 and $2,672 as of September 30, 2024 and December 31, 2023, respectively	187,873		186,708
Investment in unconsolidated real estate ventures	602,700		601,227
Deferred costs, net	86,390		95,984
Intangible assets, net	6,249		7,694
Other assets	121,509		86,051
Total assets	$	3,599,560	$	3,732,447
LIABILITIES AND PARTNERS' EQUITY
Secured debt, net	$	272,181	$	255,671
Unsecured credit facility	40,000		—
Unsecured term loans, net	331,797		318,499
Unsecured senior notes, net	1,617,795		1,564,662
Accounts payable and accrued expenses	137,406		123,825
Distributions payable	26,230		26,017
Deferred income, gains and rent	21,453		24,248
Intangible liabilities, net	7,558		8,270
Lease liability - operating leases	23,502		23,369
Other liabilities	16,908		63,729
Total liabilities	$	2,494,830	$	2,408,290
Commitments and contingencies (See Note 14)
Redeemable limited partnership units at redemption value; 515,595 and 515,595 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	2,773		2,785
Brandywine Operating Partnership, L.P.'s equity:
General Partnership Capital; 172,665,995 and 172,097,661 units issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	1,103,266		1,319,572
Accumulated other comprehensive loss	(4,122)		(1,010)
Total Brandywine Operating Partnership, L.P.'s equity	1,099,144		1,318,562
Noncontrolling interest - consolidated real estate ventures	2,813		2,810
Total partners' equity	$	1,101,957	$	1,321,372
Total liabilities and partners' equity	$	3,599,560	$	3,732,447

The accompanying notes are an integral part of these consolidated financial statements.

12

BRANDYWINE OPERATING PARTNERSHIP, L.P.

CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited, in thousands, except unit and per unit information)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Revenue
Rents	$	117,958	$	121,661	$	354,975	$	360,642
Third party management fees, labor reimbursement and leasing	6,093		6,553		17,685		18,782
Other	7,731		1,158		10,952		5,057
Total revenue	131,782		129,372		383,612		384,481
Operating expenses
Property operating expenses	31,900		31,123		95,532		96,608
Real estate taxes	11,892		12,808		37,019		38,981
Third party management expenses	2,487		2,468		7,456		7,664
Depreciation and amortization	44,301		48,966		133,530		141,645
General and administrative expenses	12,681		8,069		32,726		26,911
Provision for impairment	37,980		11,666		44,407		16,134
Total operating expenses	141,241		115,100		350,670		327,943
Gain on sale of real estate
Net gain on sale of undepreciated real estate	—		—		—		781
Total gain on sale of real estate	—		—		—		781
Operating income (loss)	(9,459)		14,272		32,942		57,319
Other income (expense):
Interest and investment income	639		293		2,572		1,318
Interest expense	(30,561)		(24,355)		(85,104)		(70,677)
Interest expense - amortization of deferred financing costs	(1,247)		(1,110)		(3,753)		(3,251)
Equity in loss of unconsolidated real estate ventures	(125,862)		(10,739)		(153,957)		(24,504)
Net gain on real estate venture transactions	770		—		54,503		181
Gain on early extinguishment of debt	—		—		941		—
Net loss before income taxes	(165,720)		(21,639)		(151,856)		(39,614)
Income tax benefit (provision)	—		3		(11)		(35)
Net loss	(165,720)		(21,636)		(151,867)		(39,649)
Net (income) loss attributable to noncontrolling interests - consolidated real estate ventures	3		20		(3)		21
Net loss attributable to Brandywine Operating Partnership, L.P.	(165,717)		(21,616)		(151,870)		(39,628)
Nonforfeitable dividends allocated to unvested restricted unitholders	(276)		(159)		(889)		(433)
Net loss attributable to Common Partnership Unitholders of Brandywine Operating Partnership, L.P.	$	(165,993)	$	(21,775)	$	(152,759)	$	(40,061)
Basic loss per Common Partnership Unit	$	(0.96)	$	(0.13)	$	(0.88)	$	(0.23)
Diluted loss per Common Partnership Unit	$	(0.96)	$	(0.13)	$	(0.88)	$	(0.23)
Basic weighted average common partnership units outstanding	173,184,325		172,614,128		172,995,920		172,429,019
Diluted weighted average common partnership units outstanding	173,184,325		172,614,128		172,995,920		172,429,019

The accompanying notes are an integral part of these consolidated financial statements.

13

BRANDYWINE OPERATING PARTNERSHIP, L.P.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited, in thousands)

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Net loss	$	(165,720)	$	(21,636)	$	(151,867)	$	(39,649)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	(9,919)		2,885		(3,112)		4,240
Total comprehensive income (loss)	(9,919)		2,885		(3,112)		4,240
Comprehensive loss	(175,639)		(18,751)		(154,979)		(35,409)
Comprehensive (income) loss attributable to noncontrolling interest - consolidated real estate ventures	3		20		(3)		21
Comprehensive loss attributable to Brandywine Operating Partnership, L.P.	$	(175,636)	$	(18,731)	$	(154,982)	$	(35,388)

The accompanying notes are an integral part of these consolidated financial statements.

14

BRANDYWINE OPERATING PARTNERSHIP, L.P.

CONSOLIDATED STATEMENTS OF PARTNERS’ EQUITY

(unaudited, in thousands, except number of units)

	General Partner Capital
	Units	Amount		Accumulated Other Comprehensive Income		Noncontrolling Interest - Consolidated Real Estate Ventures		Total Partners' Equity
BALANCE, December 31, 2023	172,097,661	$	1,319,572	$	(1,010)	$	2,810	$	1,321,372
Net loss		(16,417)				3		(16,414)
Other comprehensive income				6,026				6,026
Deferred compensation obligation	(21,234)	(100)						(100)
Share-based compensation activity	194,480	4,831						4,831
Adjustment of redeemable partnership units to liquidation value at period end		316						316
Distributions declared to general partnership unitholders ($0.15 per unit)		(26,177)						(26,177)
BALANCE, March 31, 2024	172,270,907	$	1,282,025	$	5,016	$	2,813	$	1,289,854
Net income		30,264				3		30,267
Other comprehensive income				781				781
Deferred compensation obligation	(43)							—
Share-based compensation activity	407,226	2,359						2,359
Adjustment of redeemable partnership units to liquidation value at period end		16						16
Distributions declared to general partnership unitholders ($0.15 per unit)		(26,179)						(26,179)
BALANCE, June 30, 2024	172,678,090	$	1,288,485	$	5,797	$	2,816	$	1,297,098
Net loss		(165,717)				(3)		(165,720)
Other comprehensive loss				(9,919)				(9,919)
Deferred compensation obligation	(12,095)	(59)						(59)
Distributions from consolidated real estate ventures								—
Share-based compensation activity		7,284						7,284
Adjustment of redeemable partnership units to liquidation value at period end		(551)						(551)
Distributions declared to general partnership unitholders ($0.15 per unit)		(26,176)						(26,176)
BALANCE, September 30, 2024	172,665,995	$	1,103,266	$	(4,122)	$	2,813	$	1,101,957

The accompanying notes are an integral part of these consolidated financial statements.

15

BRANDYWINE OPERATING PARTNERSHIP, L.P.

CONSOLIDATED STATEMENT OF PARTNERS’ EQUITY

(unaudited, in thousands, except number of units)

	General Partner Capital
	Units	Amount		Accumulated Other Comprehensive Income (Loss)		Noncontrolling Interest - Consolidated Real Estate Ventures		Total Partners' Equity
BALANCE, December 31, 2022	171,569,807	$	1,623,738	$	3,569	$	2,832	$	1,630,139
Net loss		(5,275)				(1)		(5,276)
Other comprehensive loss				(5,291)				(5,291)
Deferred compensation obligation	(13,422)	(88)						(88)
Repurchase and retirement of LP units								—
Share-based compensation activity	171,318	3,371						3,371
Adjustment of redeemable partnership units to liquidation value at period end		779						779
Distributions declared to general partnership unitholders ($0.19 per unit)		(32,734)						(32,734)
BALANCE, March 31, 2023	171,727,703	$	1,589,791	$	(1,722)	$	2,831	$	1,590,900
Net loss		(12,737)						(12,737)
Other comprehensive income				6,646				6,646
Share-based compensation activity	374,226	2,616						2,616
Adjustment of redeemable partnership units to liquidation value at period end		(98)						(98)
Distributions declared to general partnership unitholders ($0.19 per unit)		(32,985)						(32,985)
BALANCE, June 30, 2023	172,101,929	1,546,587		4,924		2,831		1,554,342
Net loss		(21,616)				(20)		(21,636)
Other comprehensive income				2,885				2,885
Deferred compensation obligation	(4,268)	(20)						(20)
Share-based compensation activity		2,506						2,506
Adjustment of redeemable partnership units to liquidation value at period end		(41)						(41)
Distributions declared to general partnership unitholders ($0.15 per unit)		(25,950)						(25,950)
BALANCE, September 30, 2023	172,097,661	1,501,466		7,809		2,811		1,512,086

The accompanying notes are an integral part of these consolidated financial statements.

16

BRANDYWINE OPERATING PARTNERSHIP L.P.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands) 

	Nine Months Ended September 30,
	2024		2023
Cash flows from operating activities:
Net loss	$	(151,867)	$	(39,649)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	133,530		141,645
Amortization of deferred financing costs	3,753		3,251
Amortization of debt discount/(premium), net	(2,540)		(774)
Amortization of stock compensation costs	13,068		8,305
Straight-line rent income	(5,745)		(6,612)
Amortization of acquired above (below) market leases, net	(706)		(993)
Ground rent expense	589		601
Net gain on real estate venture transactions	(54,503)		(181)
Total gain on sale of real estate	—		(781)
Gain on early extinguishment of debt	(941)		—
Provision for impairment	44,407		16,134
Loss from unconsolidated real estate ventures, including income distributions	153,957		24,504
Income tax provision	11		35
Changes in assets and liabilities:
Accounts receivable	1,787		(2,362)
Other assets	(14,343)		(24,619)
Accounts payable and accrued expenses	4,851		(8,992)
Deferred income, gains and rent	(1,740)		(1,196)
Other liabilities	634		3,089
Net cash provided by operating activities	124,202		111,405
Cash flows from investing activities:
Proceeds from the sale of properties	45,250		51,285
Capital expenditures for tenant improvements	(55,214)		(34,219)
Capital expenditures for redevelopments	(8,747)		(42,592)
Capital expenditures for developments	(29,580)		(30,149)
Advances for the purchase of tenant assets, net of repayments	1,377		(9,292)
Investment in unconsolidated real estate ventures	(143,751)		(72,715)
Deposits for real estate	—		3,500
Capital distributions from unconsolidated real estate ventures	3,941		2,700
Leasing costs paid	(6,307)		(7,969)
Net cash used in investing activities	(193,031)		(139,451)
Cash flows from financing activities:
Proceeds from credit facility borrowings	131,000		172,000
Repayments of credit facility borrowings	(91,000)		(260,500)
Proceeds from unsecured notes	400,000		—
Repayments of unsecured notes	(339,059)		(54,301)
Proceeds from unsecured term loan	13,000		70,000
Proceeds from secured term loan	—		245,000
Proceeds from construction loan	15,943		—
Debt financing costs paid	(6,334)		(4,371)
Shares used for employee taxes upon vesting of share awards	(1,028)		(952)
Distributions paid to preferred and common partnership units	(78,534)		(98,600)
Net cash provided by financing activities	43,988		68,276
Increase/(Decrease) in cash and cash equivalents and restricted cash	(24,841)		40,230
Cash and cash equivalents and restricted cash at beginning of period	67,534		18,387
Cash and cash equivalents and restricted cash at end of period	$	42,693	$	58,617
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	$	58,319	$	17,551
Restricted cash, beginning of period	9,215		836
Cash and cash equivalents and restricted cash, beginning of period	$	67,534	$	18,387
Cash and cash equivalents, end of period	$	36,498	$	47,872
Restricted cash, end of period	6,195		10,745
Cash and cash equivalents and restricted cash, end of period	$	42,693	$	58,617
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2024 and 2023 of $13,866 and $12,602, respectively	$	86,398	$	73,217
Cash paid for income taxes	—		550
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	26,230		26,027
Change in investment in real estate ventures as a result of deconsolidation	—		8,595
Change in operating real estate from deconsolidation of operating properties	—		(7,814)
Change in notes receivable from sale of properties	19,919		—
Change in capital expenditures financed through accounts payable at period end	8,383		4,276
Change in capital expenditures financed through retention payable at period end	(2,331)		2,587

The accompanying notes are an integral part of these consolidated financial statements.

17

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1. ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP

Brandywine Realty Trust (the “Parent Company”) is a self-administered and self-managed real estate investment trust (“REIT”) engaged in the acquisition, development, redevelopment, ownership, management, and operation of a portfolio of office and mixed-use properties. The Parent Company owns its assets and conducts its operations through Brandywine Operating Partnership, L.P. (the “Operating Partnership”) and subsidiaries of the Operating Partnership. The Parent Company is the sole general partner of the Operating Partnership and, as of September 30, 2024, owned a 99.7% interest in the Operating Partnership. The Parent Company’s common shares of beneficial interest (“common shares”) are publicly traded on the New York Stock Exchange under the ticker symbol “BDN.” The Parent Company, the Operating Partnership, and their consolidated subsidiaries are collectively referred to as the “Company.”

As of September 30, 2024, the Company owned and consolidated 67 properties that contained an aggregate of approximately 12.5 million net rentable square feet (collectively, the “Properties”). The Company’s core portfolio of operating properties (the “Core Properties”) exclude properties under development or redevelopment properties, recently completed - not stabilized properties, and properties held for sale. The Properties were comprised of the following as of September 30, 2024:

	Number of Properties	Rentable Square Feet
Office properties	60	11,252,377
Mixed-use properties	4	924,450
Core Properties	64	12,176,827
Development/redevelopment properties	2	144,685
Recently completed - not stabilized properties (a)	1	168,294
The Properties	67	12,489,806

(a)The Company reclassifies a Property from “development/redevelopment property” to “recently completed – not-stabilized property” after the date that the development or redevelopment of the Property is placed in service and prior to the time that the Property reaches at least 90% occupy. At such time as the Property reaches at least 90% occupancy, the Company reclassifies the Property as a “Core Property.”

In addition to the Properties, as of September 30, 2024, the Company owned 130.6 acres of land held for development. The Company also held a leasehold interest in one land parcel totaling 0.8 acres, acquired through a prepaid 99-year ground lease, and held options to purchase approximately 5.1 additional acres of undeveloped land. As of September 30, 2024, the total potential development that this inventory of land could support under current zoning and entitlements, including the parcels under option, amounted to an estimated 11.9 million net rentable square feet.

As of September 30, 2024, the Company also owned economic interests in thirteen unconsolidated real estate ventures (see Note 4“Investment in Unconsolidated Real Estate Ventures,” for further information). The Properties and the properties owned by the unconsolidated real estate ventures are primarily located in or near Philadelphia, Pennsylvania; Austin, Texas; Metropolitan Washington, D.C.; Southern New Jersey; and Wilmington, Delaware.

The Company conducts its third-party real estate management services business primarily through wholly-owned management company subsidiaries. As of September 30, 2024, the management company subsidiaries were managing properties containing an aggregate of approximately 20.4 million net rentable square feet, of which approximately 12.5 million net rentable square feet relate to Properties owned by the Company and approximately 7.9 million net rentable square feet relate to properties owned by the unconsolidated real estate ventures.

Unless otherwise indicated, all references in this Form 10-Q to square feet and net rentable square feet represent net rentable area.

2. BASIS OF PRESENTATION

Basis of Presentation

The consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial statements. Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, all adjustments consist solely of normal recurring matters, and result in a fair statement of the financial position of the Company as of September 30, 2024, the results of its operations for the three and nine months ended September 30, 2024 and 2023 and its cash flows for the nine months ended September 30, 2024 and 2023. The results of operations for such interim periods are not necessarily indicative of the results for a full year. These consolidated financial statements should be read in conjunction with the Parent Company’s and the Operating Partnership’s consolidated financial statements and footnotes

18

included in their combined Annual Report on Form 10-K for the year ended December 31, 2023 filed with the SEC on February 22, 2024.

The consolidated balance sheet at December 31, 2023 has been derived from the audited financial statements as of that date but does not include all the information and footnotes required by GAAP for complete financial statements. The Company’s Annual Report on Form 10-K for the year ended December 31, 2023 contains a discussion of the Company’s significant accounting policies under Note 2, “Summary of Significant Accounting Policies”. There have been no material changes in the Company’s significant accounting policies since December 31, 2023.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The estimates and assumptions include, but are not limited to, the amount and timing of development/redevelopment costs and of Company obligations for such costs, including costs incurred through unconsolidated real estate ventures. The estimates and assumptions for development/redevelopment cost are highly judgmental, cover significant future time horizons and are sensitive to cost escalations, sales price escalations and timing and pricing of leasing activity, all of which may be affected by expectations about future market or economic conditions. Actual results could differ from these and other estimates.

Recent Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280). The new standard requires enhanced disclosures about significant segment expenses and other segment items and requires companies to disclose all annual disclosures about segments in interim periods. The new standard also permits companies to disclose more than one measure of segment profit or loss, requires disclosure of the title and position of the Chief Operating Decision Maker, and requires companies with a single reportable segment to provide all disclosures required by Topic 280. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and companies are required to apply the ASU retrospectively to all periods presented. The Company does not expect the standard to have a material impact on its consolidated financial statements.

19

3. REAL ESTATE INVESTMENTS

As of September 30, 2024 and December 31, 2023, the gross carrying value of the Properties, reflected in the line item “Operating properties” in the Company's consolidated balance sheets, was as follows (in thousands):

	September 30, 2024		December 31, 2023
Land	$	369,098	$	394,669
Building and improvements	2,577,361		2,671,024
Tenant improvements	463,146		476,539
Total	$	3,409,605	$	3,542,232

Dispositions

During the three months ended September 30, 2024, the Company sold the Plymouth Meeting Executive Center, comprised of five office properties totaling a 521,288 square feet located in Plymouth Meeting, Pennsylvania for a gross sales price of $65.5 million, and after closing costs and seller credits, received $44.1 million of net cash proceeds and $15.5 million in seller financing to the purchaser which is subordinate to a first mortgage. The seller financing is subject to mandatory redemption by no later than the tenth anniversary of the closing date of the sale and is classified within “Other Asset” on the consolidated balance sheet. Prior to the sale and during the three months ended September 30, 2024, the Company recognized a provision for impairment of $3.3 million on the properties based upon the executed purchase and sale agreement.

During the three months ended September 30, 2024, the Company sold 11 acres of land in Gibbsboro, New Jersey for $6.5 million and provided seller financing of $4.4 million. Prior to the sale and during the three months ended September 30, 2024, the Company recognized a provision for impairment of $0.6 million on the property based upon the executed purchase and sale agreement.

Held for Use Impairment

For the quarter ended September 30, 2024, the Company recognized impairment losses totaling $34.1 million on three properties, two of which are located in the Austin, Texas segment and one of which is in the Other segment. The estimated fair value is considered Level 3 in accordance with ASC 820 and was based upon purchase and sale agreements as of September 30, 2024. The closings under the purchase and sales agreements have not been consummated and there can be no assurance that the Company will complete the dispositions.

4. INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

As of September 30, 2024, the Company held ownership interests in thirteen unconsolidated real estate ventures, with a net aggregate investment balance of $602.7 million. As of September 30, 2024, six of the real estate ventures owned properties (directly or through leasehold interests) that contained an aggregate of approximately 9.1 million net rentable square feet of office space; two of the real estate ventures owned 1.4 acres of land held for development; four of the real estate ventures owned 7.5 acres of land in active development; and one of the real estate ventures owned a mixed-used tower comprised of 250 apartment units and 0.2 million net rentable square feet of office/retail space.

The Company accounts for its interests in the unconsolidated real estate ventures, which range from 5% to 78%, using the equity method. Certain of the unconsolidated real estate ventures are subject to specified priority allocations of distributable cash, including cash from operations and cash from capital events, such as sales of properties.

The Company earned management fees from the unconsolidated real estate ventures of $2.2 million and $2.1 million for the three months ended September 30, 2024 and 2023, respectively, and $5.9 million and $6.2 million for the nine months ended September 30, 2024 and 2023, respectively.

The Company earned leasing commissions from the unconsolidated real estate ventures of $0.2 million and $1.5 million for the three months ended September 30, 2024 and 2023, respectively, and $1.7 million and $2.9 million for the nine months ended September 30, 2024 and 2023, respectively.

The Company had outstanding accounts receivable balances from the unconsolidated real estate ventures of $4.6 million and $3.5 million as of September 30, 2024 and December 31, 2023, respectively.

20

The amounts reflected in the following tables (except for the Company’s share of equity in income) are based on the financial information of the individual unconsolidated real estate ventures.

The following is a summary of the financial position of the unconsolidated real estate ventures in which the Company held interests as of September 30, 2024 and December 31, 2023 (in thousands):

	September 30, 2024 (b)		December 31, 2023
Net property	$	1,760,185	$	2,339,921
Other assets	278,441		534,658
Other liabilities	147,265		443,536
Debt, net	824,714		1,407,858
Equity (a)	1,066,647		1,023,185

(a)This amount does not include the effect of the basis difference between the Company’s historical cost basis and the basis recorded at the real estate venture level, which is typically amortized over the life of the related assets and liabilities. Basis differentials occur from the impairment of investments, purchases of third-party interests in existing real estate ventures and upon the transfer of assets that were previously owned by the Company into a real estate venture. In addition, certain acquisition, transaction and other costs may not be reflected in the net assets at the real estate venture level.

(b)Excludes amounts related to the Herndon Innovation Center Metro Portfolio Venture, LLC and the New MAP Venture as the Company discontinued applying the equity method of accounting. The Company discontinued applying the equity method of accounting on the Herndon Innovation Center Metro Portfolio Venture, LLC after March 31, 2024 and discontinued applying the equity method of accounting on the New MAP Venture after June 30, 2024.

The following is a summary of results of operations of the unconsolidated real estate ventures in which the Company held interests during the three and nine-month periods ended September 30, 2024 and 2023 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024 (a)		2023		2024 (a)		2023
Revenue	$	33,058	$	58,986	$	122,951	$	175,939
Operating expenses	(13,680)		(31,641)		(63,985)		(90,531)
Interest expense, net	(12,030)		(21,591)		(44,980)		(55,769)
Depreciation and amortization	(14,518)		(24,635)		(54,499)		(73,636)
Provision for impairment	(116,543)		—		(116,543)		—
Loss on property disposition	490		—		—		—
Net loss	$	(123,223)	$	(18,881)	$	(157,056)	$	(43,997)
Ownership interest %	Various		Various		Various		Various
Company's share of net loss	$	(119,111)	$	(10,130)	$	(146,992)	$	(23,782)
Other-than-temporary impairment (b)	(6,833)		—		(6,833)		—
Basis adjustments and other	82		(609)		(132)		(722)
Equity in loss of unconsolidated real estate ventures	$	(125,862)	$	(10,739)	$	(153,957)	$	(24,504)

(a)Excludes amounts related to the Herndon Innovation Center Metro Portfolio Venture, LLC and the New MAP Venture as the Company discontinued applying the equity method of accounting. The Company discontinued applying the equity method of accounting on the Herndon Innovation Center Metro Portfolio Venture, LLC after March 31, 2024 and the New MAP Venture after June 30, 2024.

(b)Represents other-than-temporary impairment on investment in an unconsolidated joint venture due to a decline in fair value below the carrying value of our investments in the unconsolidated joint venture for the quarter ended September 30, 2024.

Mid-Atlantic Office Venture

On August 9, 2024 as part of a loan restructuring for the Mid-Atlantic Office Venture which included forgiveness of $39.8 million of the Venture's debt, the Company funded its $4.1 million portion of a lender pay down for the venture. Brandywine’s contribution is an equity method investment in the Mid-Atlantic Office JV. The Company recorded the contribution to Investment in unconsolidated real estate ventures on the consolidated balance sheet. The Mid-Atlantic Office Venture has liquidation rights and priorities that are different from ownership percentages. As such, equity in earnings is determined using the hypothetical liquidation book value (“HLBV”) method. Income or loss is recorded based on changes in what would be received should the entity liquidate all of its assets (as valued in accordance with GAAP) and distribute the resulting proceeds based on the terms of the respective agreements. The HLBV method is a balance sheet focused approach commonly applied to equity investments where cash distribution percentages vary at different points in time and are not directly linked to an equity holder’s ownership percentage.

21

Commerce Square Venture

On August 26, 2024, the Company agreed to fund and has subsequently funded, in November 2024, an additional $23 million common equity contribution to the Commerce Square Venture, the proceeds from which will be used by the Commerce Square Venture to pay down the preferred equity position of the Company’s current partner in the Commerce Square Venture, thereby increasing a portion of the Company’s ownership interest in the Commerce Square Venture to 84%. In connection with the Company’s funding agreement, the Commerce Square Venture recorded impairment charges of $116.5 million during the quarter ended September 30, 2024 based on the excess of the carrying value of the properties over their estimated fair value. The estimated fair value is considered Level 3 in accordance with ASC 820 and was based upon the third party appraisal.

4040 Wilson Venture

During the quarter ended September 30, 2024, our partner elected to acquire our 50% ownership interest in the 4040 Wilson Venture based on an agreed upon property valuation of $190.5M. As a result, the Company recognized an other than temporary impairment loss on its investment in the unconsolidated joint ventures of $6.8 million.

Original MAP Venture and New MAP Venture

On June 28, 2024, the Company recapitalized one of its unconsolidated real estate ventures, referred to as the “Original MAP Venture,” in which the Company had a negative investment balance of $52.2 million as of March 31, 2024 and a 50% ownership interest. Through the recapitalization, the Original MAP Venture transferred, for $26.0 million, 14 of the 57 properties in which it held ground lease interests to a newly-formed real estate venture, referred to below as the “KB JV,” owned equally between the Company and the ground lessor of the land on which all of the 57 properties are situated. The Original MAP Venture used substantially all of the proceeds it received from the transfer of the 14 properties to pay down its non-recourse mortgage loan to $154.6 million. Through the recapitalization of the Original MAP Venture, the Company redeemed the entire interest of its former partner in the Original MAP Venture for a nominal amount and reversed the Company’s negative investment balance to zero, resulting in a one-time, non-cash gain of $53.8 million. The non-recourse mortgage loan was amended as part of the pay-down, and, as amended, has a scheduled maturity date of March 1, 2027 (subject to mandatory pay downs as properties that remain owned by the New MAP Venture are sold), bears interest at SOFR plus 2.75% and provides the lender with a 95% entitlement to residual cash from operations and capital proceeds, if any, after the mortgage loan has been repaid and after all obligations to the ground lessor and other third parties have been satisfied. Pursuant to the amended loan, the Company has agreed to fund up to $12 million for tenant and capital improvements pursuant to leases that the Company proposes, in its discretion, to enter into at the properties owned by the New MAP Venture, which amounts, when funded, will accrue interest at 8.0% per annum.As of June 30, 2024, the Company's investment in the New MAP Venture was zero, and the Company discontinued applying the equity method of accounting on the New MAP Venture. The Company has not guaranteed any of the obligations of the New MAP Venture or otherwise committed to funding any future losses.

KB JV

As discussed above under “Original MAP Venture and New MAP Venture,” on June 28, 2024, the Company formed a new joint venture, KB JV, LLC (the "KB JV"), which acquired leasehold interests in 14 properties from the Original MAP Venture for $26.0 million. The 14 properties owned by the KB JV contain of an aggregate of 641,819 net rentable square feet and are located in Richmond, Virginia. The Company owns a 50% equity interest in the KB JV and the portfolio assets are unencumbered by third party debt. In connection with the formation of KB JV, KB JV loaned $13.0 million to the Company to fund a portion of the purchase of the 14 properties. The loan from KB JV is classified as “Unsecured term loan, net” on the consolidated balance sheet. If the properties owned by the KB JV are sold, the fee owner of the properties, has agreed to cause both the leasehold and fee interests in the portfolio to be sold.

22

5. LEASES

Lessor Accounting

The table below sets forth the allocation of lease revenue between fixed contractual payments and variable lease payments for the three and nine months ended September 30, 2024 and 2023 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Lease Revenue	2024		2023		2024		2023
Fixed contractual payments	$	91,844	$	94,478	$	276,050	$	279,129
Variable lease payments	22,982		23,851		70,249		72,754
Total	$	114,826	$	118,329	$	346,299	$	351,883

6. INTANGIBLE ASSETS AND LIABILITIES

As of September 30, 2024 and December 31, 2023, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	September 30, 2024
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	17,112	$	(10,940)	$	6,172
Tenant relationship value	110		(56)		54
Above market leases acquired	75		(52)		23
Total intangible assets, net	$	17,297	$	(11,048)	$	6,249
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	16,668	$	(9,110)	$	7,558

	December 31, 2023
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	24,281	$	(16,673)	$	7,608
Tenant relationship value	110		(52)		58
Above market leases acquired	75		(47)		28
Total intangible assets, net	$	24,466	$	(16,772)	$	7,694
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	17,588	$	(9,318)	$	8,270

As of September 30, 2024, the Company’s annual amortization for its intangible assets/liabilities, assuming no early lease terminations, was as follows (dollars in thousands):

23

	Assets		Liabilities
2024 (three months remaining)	$	373	$	217
2025	1,485		869
2026	1,093		739
2027	808		623
2028	313		534
Thereafter	2,177		4,576
Total	$	6,249	$	7,558

7. DEBT OBLIGATIONS

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of September 30, 2024 and December 31, 2023 (in thousands):

	September 30, 2024		December 31, 2023		Effective Interest Rate		Maturity Date
SECURED DEBT:
$245.0M 5.88% Secured Term Loan due 2028	$	245,000	$	245,000	5.88%		February 2028
$50.0M Construction Loan due 2026	29,767		13,824		SOFR + 2.50%		August 2026
Principal balance outstanding	274,767		258,824
Less: deferred financing costs	(2,586)		(3,153)
Total Secured indebtedness	$	272,181	$	255,671
UNSECURED DEBT
$600.0M Unsecured Credit Facility	$	40,000	$	—	SOFR + 1.50%		June 2027	(a)
Term Loan - Swapped to fixed	250,000		250,000		SOFR + 1.70%	(b)	June 2027	(a)
$70.0M Term Loan	70,000		70,000		SOFR + 2.00%		February 2025	(a)
$350.0M 4.10% Guaranteed Notes due 2024	—		340,000		3.78%		October 2024
$450.0M 3.95% Guaranteed Notes due 2027	450,000		450,000		4.03%		November 2027
$350.0M 8.30% Guaranteed Notes due 2028	350,000		350,000		8.35%	(c)	March 2028
$350.0M 4.55% Guaranteed Notes due 2029	350,000		350,000		4.30%		October 2029
$400.0M 8.875% Guaranteed Notes due 2029	400,000		—		8.97%		April 2029
Indenture IA (Preferred Trust I)	27,062		27,062		SOFR + 1.51	(d)	March 2035
Indenture IB (Preferred Trust I)	25,774		25,774		SOFR + 1.51	(d)	April 2035
Indenture II (Preferred Trust II)	25,774		25,774		SOFR + 1.51	(d)	July 2035
Note Payable	13,000		—		4.66%		June 2027
Principal balance outstanding	2,001,610		1,888,610
Plus: original issue premium (discount), net	$	(663)	$	1,878
Less: deferred financing costs	(11,355)		(7,327)
Total unsecured indebtedness	$	1,989,592	$	1,883,161
Total Debt Obligations	$	2,261,773	$	2,138,832

(a)Spread includes a 10 basis point daily SOFR adjustment.

(b)On November 23, 2022, the $250.0 million unsecured term loan was swapped to a fixed rate. At September 30, 2024, the fixed rate for this instrument was 5.41% and matures on June 30, 2027. The effective date of the swap was January 31, 2023.

(c)During the third quarter of 2023, Moody’s downgraded the Company's senior unsecured credit rating from Baa3 to Ba1. As a result of the downgrade, the interest rate on the Company's 7.55% Guaranteed Notes due 2028 (the "2028 Notes") increased 25 basis points in September 2023 due to the coupon adjustment provisions within the 2028 Notes. During the first quarter of 2024, S&P downgraded the Company's senior unsecured credit rating from BBB- to BB+. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.05% in March 2024 due to the coupon adjustment provisions within the 2028 Notes. During the second quarter of 2024, Moody's downgraded the Company's senior unsecured credit rating from Ba1 to Ba2. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.30% in April 2024 due to the coupon adjustment provisions within the 2028 Notes.

(d)On January 16, 2024, the Trust Preferred I Indenture IA was swapped to a fixed rate at 5.14% for the period from March 30, 2024 to December 30, 2026 and Trust Preferred I Indenture IB and Trust Preferred II Indenture II were swapped to a fixed rate at 5.24% for the period from January 30, 2024 to January 30, 2027.

The Company utilizes borrowings under its unsecured credit facility (the “Unsecured Credit Facility”) for general business purposes, including to fund costs of acquisitions, developments and redevelopments of properties, and to fund share repurchases and repay other debt. The Unsecured Credit Facility provides for borrowings of up to $600.0 million and the per annum variable interest rate on borrowings is SOFR plus 1.40% plus a spread adjustment of 0.10%. The interest rate and

24

facility fee are subject to adjustment upon a change in the Company’s unsecured debt ratings. During the nine months ended September 30, 2024, the weighted-average interest rate on Unsecured Credit Facility borrowings was 6.90%, resulting in $1.4 million of interest expense for such period.

Guaranteed Notes due 2029

On April 12, 2024, the Company completed an underwritten offering of $400.0 million aggregate principal amount of its 8.875% Guaranteed Notes due 2029 (the “2029 Notes”). The 2029 Notes were priced at approximately 99.51% of their face amount. The Company received approximately $391.8 million of net proceeds after the deduction for underwriting discounts and offering expenses.

On April 15, 2024, the Company commenced a tender offer (the “Tender Offer”) for any and all of the outstanding $335.1 million principal amount of its 4.10% Guaranteed Notes due 2024 (the “2024 Notes”). The purchase price offered per $1,000 principal amount of 2024 Notes pursuant to the Tender Offer was determined by reference to the fixed spread for the 2024 Notes of 0 basis points plus the yield based on the bid-side price of the 4.250% U.S. Treasury due September 30, 2024. The Tender Offer expired on April 19, 2024. Upon completion of the Tender Offer, on April 23, 2024, the Company issued a redemption notice to redeem any 2024 Notes that remained outstanding after the Tender Offer. On June 7, 2024, the Company redeemed the $113.4 million principal amount of the 2024 Notes at the aggregate principal amount outstanding together with accrued and unpaid interest thereon to the redemption date. 

Additional Information on Unsecured and Secured Consolidated Debt

The Parent Company unconditionally guarantees the unsecured debt obligations of the Operating Partnership (or is a co-borrower with the Operating Partnership) but does not by itself incur unsecured indebtedness. The Parent Company has no material assets other than its investment in the Operating Partnership.

The Company was in compliance with all financial covenants as of September 30, 2024. Certain of the covenants restrict the Company’s ability to obtain alternative sources of capital.

As of September 30, 2024, the aggregate scheduled principal payments on the Company’s consolidated debt obligations (secured and unsecured) were as follows (in thousands):

2024 (three months remaining)	$	—
2025	70,000
2026	29,767
2027	753,000
2028	595,000
Thereafter	828,610
Total principal payments	2,276,377
Net unamortized premiums/(discounts)	(663)
Net deferred financing costs	(13,941)
Outstanding indebtedness	$	2,261,773

8. FAIR VALUE OF FINANCIAL INSTRUMENTS

Financial assets and liabilities recorded on the Company's consolidated balance sheets are categorized based on the inputs to the valuation techniques as follows:

•Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access;

•Level 2 inputs are inputs, other than quoted prices included in Level 1, which are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals; and

•Level 3 inputs are unobservable inputs for the asset or liability, which is typically based on an entity’s own assumptions, as there is little, if any, related market activity or information.

The Company determined the fair values disclosed below using available market information and discounted cash flow analyses as of September 30, 2024 and December 31, 2023, respectively. The discount rate used in calculating fair value is the sum of the current risk free rate and the risk premium on the date of measurement of the instruments or obligations. Considerable

25

judgment is necessary to interpret market data and to develop the related estimates of fair value. Accordingly, the estimates presented are not necessarily indicative of the amounts that the Company could realize upon disposition. The use of different estimates and valuation methodologies may have a material effect on the fair value amounts shown. The Company believes that the carrying amounts reflected in the consolidated balance sheets at September 30, 2024 and December 31, 2023 approximate the fair values for cash and cash equivalents, accounts receivable, other assets and liabilities, accounts payable and accrued expenses because they are short-term in duration. The following are financial instruments for which the Company’s estimates of fair value differ from the carrying amounts (in thousands):

	September 30, 2024				December 31, 2023
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,552,185	$	1,586,000	$	1,486,052	$	1,386,621
Variable rate debt	467,174		433,908		410,932		370,665
Fixed rate debt	242,415		237,376		241,847		233,088

(a)Net of deferred financing costs of $10.2 million and $5.8 million for unsecured notes payable, $1.2 million and $1.5 million for variable rate debt and $2.6 million and $3.2 million for secured fixed rate debt as of September 30, 2024 and December 31, 2023.

The Company used quoted market prices as of September 30, 2024 and December 31, 2023 to value the unsecured notes payable and, as such, categorized them as Level 2.

The inputs utilized to determine the fair value of the Company’s variable rate debt are categorized as Level 3. The fair value of the variable rate debt was determined using a discounted cash flow model that considered borrowing rates available to the Company for loans with similar terms and characteristics.

The inputs utilized to determine fair value of the Company’s notes receivable are unobservable and, as such, were categorized as Level 3. Fair value was determined using a discounted cash flow model that considered the contractual interest and principal payments discounted at a blended interest rate of the notes receivable.

For the Company’s Level 3 financial instruments for which fair value is disclosed, an increase in the discount rate used to determine fair value would result in a decrease to the fair value. Conversely, a decrease in the discount rate would result in an increase to the fair value.

Disclosure about the fair value of financial instruments is based upon pertinent information available to management as of September 30, 2024 and December 31, 2023. Although management is not aware of any factors that would significantly affect the fair value amounts, such amounts were not comprehensively revalued for purposes of these financial statements since September 30, 2024. Current estimates of fair value may differ from the amounts presented herein.

9. DERIVATIVE FINANCIAL INSTRUMENTS

The following table summarizes the terms and fair values of the Company’s derivative financial instruments as of September 30, 2024 and December 31, 2023. The notional amounts provide an indication of the extent of the Company’s involvement in these instruments at that time, but do not represent exposure to credit, interest rate or market risks (amounts presented in thousands).

Hedge Product	Hedge Type	Designation		Notional Amount				Strike		Trade Date	Maturity Date	Fair value
				9/30/2024		12/31/2023						9/30/2024		12/31/2023
Liabilities
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	3.729	%	November 23, 2022	June 30, 2027	$	(2,707)	$	(757)
Swap	Interest Rate	Cash Flow	(a)	27,062		—		3.629	%	January 12, 2024	December 30, 2026	(420)		—
Swap	Interest Rate	Cash Flow	(a)	51,548		—		3.725	%	January 12, 2024	January 30, 2027	(160)		—
				$	328,610	$	250,000

(a)Hedging unsecured variable rate debt.

26

The Company measures its derivative instruments at fair value and records them in “Other assets” and “Other liabilities” on the Company’s consolidated balance sheets.

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, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. The Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that the inputs utilized to determine the fair value of derivative instruments are classified in Level 2 of the fair value hierarchy.

10. LIMITED PARTNERS’ NONCONTROLLING INTERESTS IN THE PARENT COMPANY

Noncontrolling interests in the Parent Company’s financial statements relate to redeemable common limited partnership interests in the Operating Partnership held by parties other than the Parent Company and properties which are consolidated but not wholly-owned by the Operating Partnership.

Operating Partnership

The aggregate book value of the noncontrolling interests associated with the redeemable common limited partnership units in the accompanying consolidated balance sheet of the Parent Company was $3.3 million and $4.1 million as of September 30, 2024 and December 31, 2023, respectively. Under the applicable accounting guidance, the redemption value of the redeemable common limited partnership units is carried at fair value. The aggregate settlement value of these units (based on the number of units outstanding and the average closing price of the common shares during the last five business days of the quarter ended September 30, 2024) was approximately $2.8 million and $2.8 million as of September 30, 2024 and December 31, 2023, respectively.

11. BENEFICIARIES’ EQUITY OF THE PARENT COMPANY

Earnings per Share (EPS)

The following table details the number of shares and net income used to calculate basic and diluted earnings per share (in thousands, except share and per share amounts; results may not add due to rounding):

	Three Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(165,720)	$	(165,720)	$	(21,636)	$	(21,636)
Net loss attributable to noncontrolling interests	500		500		82		82
Nonforfeitable dividends allocated to unvested restricted shareholders	(276)		(276)		(159)		(159)
Net loss attributable to common shareholders	$	(165,496)	$	(165,496)	$	(21,713)	$	(21,713)
Denominator
Weighted-average shares outstanding	172,668,731		172,668,731		172,097,661		172,097,661
Weighted-average shares outstanding	172,668,731		172,668,731		172,097,661		172,097,661
Loss per Common Share:
Net loss attributable to common shareholders	$	(0.96)	$	(0.96)	$	(0.13)	$	(0.13)

27

	Nine Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(151,867)	$	(151,867)	$	(39,649)	$	(39,649)
Net loss attributable to noncontrolling interests	452		452		140		140
Nonforfeitable dividends allocated to unvested restricted shareholders	(889)		(889)		(433)		(433)
Net loss attributable to common shareholders	$	(152,304)	$	(152,304)	$	(39,942)	$	(39,942)
Denominator
Weighted-average shares outstanding	172,480,325		172,480,325		171,912,552		171,912,552
Weighted-average shares outstanding	172,480,325		172,480,325		171,912,552		171,912,552
Loss per Common Share:
Net loss attributable to common shareholders	$	(0.88)	$	(0.88)	$	(0.23)	$	(0.23)

Redeemable common limited partnership units totaling 515,595 and 516,467 at September 30, 2024 and September 30, 2023, respectively, were excluded from the diluted earnings per share computations because they are not dilutive. The reduction in the number of outstanding common limited partnership units reflects the redemption for cash of 872 such units on December 19, 2023.

Unvested restricted shares are considered participating securities which require the use of the two-class method for the computation of basic and diluted earnings per share. For the three and nine months ended September 30, 2024 and 2023, earnings representing nonforfeitable dividends as noted in the table above were allocated to the unvested restricted shares issued to the Company’s executives and other employees under the Company’s shareholder-approved long-term equity incentive plan.

Common Shares

On September 25, 2024, the Parent Company declared a distribution of $0.15 per common share, totaling $26.3 million, which was paid on October 24, 2024 to shareholders of record as of October 9, 2024.

The Parent Company maintains a common share repurchase program under which the Board of Trustees has authorized the Parent Company to repurchase its common shares. On January 3, 2019, the Board of Trustees authorized the repurchase of up to $150.0 million of the Company's common shares from and after January 3, 2019. During the nine months ended September 30, 2024 and September 30, 2023, the Company did not repurchase any common shares.

12. PARTNERS’ EQUITY OF THE PARENT COMPANY

Earnings per Common Partnership Unit

The following table details the number of units and net income used to calculate basic and diluted earnings per common partnership unit (in thousands, except unit and per unit amounts; results may not add due to rounding):

	Three Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(165,720)	$	(165,720)	$	(21,636)	$	(21,636)
Net loss attributable to noncontrolling interests	3		3		20		20
Nonforfeitable dividends allocated to unvested restricted unitholders	(276)		(276)		(159)		(159)
Net loss attributable to common unitholders	$	(165,993)	$	(165,993)	$	(21,775)	$	(21,775)
Denominator
Total weighted-average units outstanding	173,184,325		173,184,325		172,614,128		172,614,128
Loss per Common Partnership Unit:
Net loss attributable to common unitholders	$	(0.96)	$	(0.96)	$	(0.13)	$	(0.13)

28

	Nine Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(151,867)	$	(151,867)	$	(39,649)	$	(39,649)
Net (income) loss attributable to noncontrolling interests	(3)		(3)		21		21
Nonforfeitable dividends allocated to unvested restricted unitholders	(889)		(889)		(433)		(433)
Net loss attributable to common unitholders	$	(152,759)	$	(152,759)	$	(40,061)	$	(40,061)
Denominator
Total weighted-average units outstanding	172,995,920		172,995,920		172,429,019		172,429,019
Loss per Common Partnership Unit:
Net loss attributable to common unitholders	$	(0.88)	$	(0.88)	$	(0.23)	$	(0.23)

Unvested restricted units are considered participating securities which require the use of the two-class method for the computation of basic and diluted earnings per unit. For the three and nine months ended September 30, 2024 and 2023, earnings representing nonforfeitable dividends were allocated to the unvested restricted units issued to the Parent Company’s executives and other employees under the Parent Company’s shareholder-approved long-term incentive plan.

Common Partnership Units

On September 25, 2024, the Operating Partnership declared a distribution of $0.15 per common partnership unit, totaling $0.1 million, which was paid on October 24, 2024 to unitholders of record as of October 9, 2024.

In connection with the Parent Company’s common share repurchase program, one common unit of the Operating Partnership is retired for each common share repurchased. During the nine months ended September 30, 2024 and September 30, 2023, the Company did not repurchase any units.

13. SEGMENT INFORMATION

As of September 30, 2024, the Company owns and manages properties within four segments: (1) Philadelphia Central Business District (“Philadelphia CBD”), (2) Pennsylvania Suburbs, (3) Austin, Texas and (4) Other. The Philadelphia CBD segment includes properties located in the City of Philadelphia, Pennsylvania. The Pennsylvania Suburbs segment includes properties in Chester, Delaware, and Montgomery counties in the Philadelphia suburbs. The Austin, Texas segment includes properties in the City of Austin, Texas. The Other segment includes properties located in the District of Columbia, Northern Virginia, Southern Maryland, Camden County, New Jersey and New Castle County, Delaware. In addition to the four segments, the corporate group is responsible for cash and investment management, development/redevelopment of certain real estate properties during the construction period, and certain other general support functions. Land held for development and construction in progress is transferred to operating properties by region upon completion of the associated construction or project.

The Company’s segments are based on the Company’s method of internal reporting, which classifies the Company's operations by geographic area. The following tables provide selected asset information and results of operations of the Company’s reportable segments (in thousands):

Real estate investments, at cost:
	September 30, 2024		December 31, 2023
Philadelphia CBD	$	1,535,263	$	1,534,893
Pennsylvania Suburbs	803,267		900,230
Austin, Texas	790,435		801,973
Total Core Segments	3,128,965		3,237,096
Other	280,640		305,136
Operating properties	$	3,409,605	$	3,542,232
Corporate
Right of use asset - operating leases, net	$	18,565	$	19,031
Construction-in-progress	$	166,278	$	135,529
Land held for development	$	78,259	$	82,510
Prepaid leasehold interests in land held for development, net	$	27,762	$	27,762

29

Net operating income:

	Three Months Ended September 30,
	2024						2023
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	56,448	$	(19,959)	$	36,489	$	56,367	$	(18,609)	$	37,758
Pennsylvania Suburbs	31,681		(10,081)		21,600		32,611		(9,770)		22,841
Austin, Texas	21,951		(8,429)		13,522		24,457		(10,044)		14,413
Other	10,430		(5,076)		5,354		10,295		(5,526)		4,769
Corporate	11,272		(2,734)		8,538		5,642		(2,450)		3,192
Operating properties	$	131,782	$	(46,279)	$	85,503	$	129,372	$	(46,399)	$	82,973

	Nine Months Ended September 30,
	2024						2023
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	169,159	$	(58,912)	$	110,247	$	169,265	$	(59,452)	$	109,813
Pennsylvania Suburbs	95,366		(29,337)		66,029		97,484		(29,633)		67,851
Austin, Texas	67,360		(26,276)		41,084		73,475		(30,021)		43,454
Other	31,706		(15,670)		16,036		28,572		(15,788)		12,784
Corporate	20,021		(9,812)		10,209		15,685		(8,359)		7,326
Operating properties	$	383,612	$	(140,007)	$	243,605	$	384,481	$	(143,253)	$	241,228

(a)Includes property operating expenses, real estate taxes and third-party management expense.

Unconsolidated real estate ventures:
	Investment in real estate ventures				Equity in income (loss) of real estate ventures
	As of				Three Months Ended September 30,				Nine Months Ended September 30,
	September 30, 2024		December 31, 2023		2024		2023		2024		2023
Philadelphia CBD	$	419,700	$	450,136	$	(125,593)	$	(6,537)	$	(145,429)	$	(14,208)
Metropolitan Washington, D.C.	86,666		71,931		(6,915)		(1,306)		(8,608)		(3,896)
Mid-Atlantic Office JV	10,925		—		7,222		182		7,222		595
MAP Venture	—		(48,733)		10		(3,078)		(6,552)		(6,995)
Austin, Texas	85,409		79,160		(586)		—		(590)		—
Total	$	602,700	$	552,494	$	(125,862)	$	(10,739)	$	(153,957)	$	(24,504)

Net operating income (“NOI”) is a non-GAAP financial measure, which we define as total property revenue less property operating expenses, real estate taxes and third-party management expenses. Property operating expenses that are included in determining NOI consist of costs that are necessary and allocable to our operating properties such as utilities, property-level salaries, repairs and maintenance, property insurance and management fees. General and administrative expenses that are not reflected in NOI primarily consist of corporate-level salaries, amortization of share awards and professional fees that are incurred as part of corporate office management. NOI presented by the Company may not be comparable to NOI reported by other companies that define NOI differently. NOI is the primary measure that is used by the Company’s management to evaluate the operating performance of the Company’s real estate assets by segment. The Company believes NOI provides useful information to investors regarding the financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. While NOI is a relevant and widely used measure of operating performance of real estate investment trusts, it does not represent cash flow from operations or net income as defined by GAAP and should not be considered as an alternative to those measures in evaluating our liquidity or operating performance. NOI does not reflect interest expenses, real estate impairment losses, depreciation and amortization costs, capital expenditures and leasing costs. The Company believes that net income (loss), as defined by GAAP, is the most appropriate earnings measure. The following is a reconciliation of consolidated net income (loss), as defined by GAAP, to consolidated NOI, (in thousands):

30

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Net loss	$	(165,720)	$	(21,636)	$	(151,867)	$	(39,649)
Plus:
Interest expense	30,561		24,355		85,104		70,677
Interest expense - amortization of deferred financing costs	1,247		1,110		3,753		3,251
Depreciation and amortization	44,301		48,966		133,530		141,645
General and administrative expenses	12,681		8,069		32,726		26,911
Equity in loss of unconsolidated real estate ventures	125,862		10,739		153,957		24,504
Provision for impairment	37,980		11,666		44,407		16,134
Gain on early extinguishment of debt	—		—		(941)		—
Less:
Interest and investment income	639		293		2,572		1,318
Income tax benefit (provision)	—		3		(11)		(35)
Net gain on sale of undepreciated real estate	—		—		—		781
Net gain on real estate venture transactions	770		—		54,503		181
Consolidated net operating income	$	85,503	$	82,973	$	243,605	$	241,228

14. COMMITMENTS AND CONTINGENCIES

Legal Proceedings

The Company is involved from time to time in litigation on various matters, including disputes with tenants, vendors and disputes arising out of agreements to purchase or sell properties. Given the nature of the Company’s business activities, these lawsuits are considered routine to the conduct of its business. The result of any particular lawsuit cannot be predicted, because of the very nature of litigation, the litigation process and its adversarial nature, and the jury system. The Company will establish reserves for specific legal proceedings when it determines that the likelihood of an unfavorable outcome is probable and when the amount of loss is reasonably estimable. The Company does not expect that the liabilities, if any, that may ultimately result from such legal actions will have a material adverse effect on the consolidated financial position, results of operations or cash flows of the Company.

Environmental

As an owner of real estate, the Company is subject to various environmental laws of federal, state, and local governments. The Company’s compliance with existing laws has not had a material adverse effect on its financial condition and results of operations, and the Company does not believe it will have a material adverse effect in the future. However, the Company cannot predict the impact of unforeseen environmental contingencies or new or changed laws or regulations on its current Properties or on properties that the Company may acquire.

Debt Guarantees and Equity Funding Commitments

As of September 30, 2024, the Company’s unconsolidated real estate ventures had aggregate indebtedness of $890.8 million. These loans are generally mortgage loans or secured construction loans, most of which are nonrecourse to the Company, except for customary recourse carve-outs. In addition, during construction undertaken by the unconsolidated real estate ventures, including the 3025 JFK Venture, the 3151 Market Street Venture, and the One Uptown Ventures, the Company has provided, and expects to continue to provide, cost overrun and completion guarantees, as well as customary environmental indemnities and guarantees of customary exceptions to nonrecourse provisions in loan agreements.

In the agreement with its partner in the 3025 JFK Venture, the Company agreed to provide cost overrun and completion guarantees for the project under development. With respect to the construction loan obtained by 3025 JFK Venture on July 23, 2021, the Company also provided a carry guarantee and limited payment guarantee up to 25% of the principal balance of the $186.7 million construction loan.

31

In the agreement with its partner in the 3151 Market Street Venture, the Company agreed to provide cost overrun and completion guaranties for the project under development. As of September 30, 2024, total estimated costs to develop 3151 Market Street are approximately $316.9 million and as of such date, the Company has fully funded its share of equity. However, the development budget for this project contemplated receipt of a construction loan of approximately $174.3 million, reflecting a 55% loan to value ratio and, as of the date of this Form 10-Q, no construction loan has been obtained and there can be no assurance that a loan will be obtained. In the event that costs are incurred before a construction loan has been obtained, the Company expects to fund such costs through its credit facilities and cash on hand.

With respect to the One Uptown Ventures, the Company has provided completion guarantees and environmental indemnities in favor of its partner. In addition, the Company has provided completion guarantees, environmental indemnities and guarantees of exceptions to nonrecourse loan provisions in favor of the lenders for the One Uptown Ventures. Moreover, the Company has provided, in favor of the lenders, carry guarantees and limited payment guarantees up to 30% and 15% of the principal balance of the $121.7 million (office) and $85.0 million (multifamily) construction loans, respectively.

The Company has agreed, pursuant to the leasehold mortgage loan to the New MAP Venture, to fund up to an additional $12 million for tenant and capital improvements pursuant to leases that the Company proposes, in its discretion, to enter into at the properties owned (through leasehold interests) by the New MAP Venture, which amounts, when funded, will accrue interest at 8.0% per annum.

The Company has agreed to contribute and has subsequently funded $23.0 million to the Commerce Square Venture in November 2024. See Note 4“Investment in Unconsolidated Real Estate Ventures,” for further information.

Impact of Natural Disasters and Casualty

The Company carries liability insurance to mitigate its exposure to certain losses, including those relating to property damage. The Company records the estimated amount of expected insurance proceeds for property damage and other losses incurred as an asset (typically a receivable from the insurer) and income up to the amount of the losses incurred when receipt of insurance proceeds is deemed probable. Any amount of insurance recovery in excess of the amount of the losses is considered a gain contingency and is not recorded until the proceeds are received.

Other Commitments or Contingencies

In connection with the Schuylkill Yards Project, the Company entered into a neighborhood engagement program and, as of September 30, 2024, had $5.6 million of future fixed contractual obligations. The Company also committed to fund additional contributions under the program. As of September 30, 2024, the Company estimates that these additional contributions, which are not fixed under the terms of agreement, will be $2.0 million.

The Company has committed to contribute $15.0 million to a venture capital fund that invests in early-stage life science companies. As of September 30, 2024, the Company had funded $2.5 million of the foregoing commitment.

The Company invests in its properties and regularly incurs capital expenditures in the ordinary course of business to maintain the properties. The Company believes that such expenditures enhance its competitiveness. The Company also enters into construction, utility and service contracts in the ordinary course of business which may extend beyond one year. These contracts typically provide for cancellation with insignificant or no cancellation penalties.

32

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The Private Securities Litigation Reform Act of 1995 (the “1995 Act”) provides a “safe harbor” for forward-looking statements. This Quarterly Report on Form 10-Q and other materials filed by us with the SEC (as well as information included in oral or other written statements made by us) contain statements that are forward-looking, including statements relating to business and real estate development/redevelopment activities, acquisitions, dispositions, future capital expenditures, financing sources, governmental regulation (including environmental regulation) and competition. We intend such forward-looking statements to be covered by the safe-harbor provisions of the 1995 Act. The words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “will,” “should” and similar expressions, as they relate to us, are intended to identify forward-looking statements. Although we believe that the expectations reflected in such forward-looking statements are based on reasonable assumptions, we can give no assurance that our expectations will be achieved. As forward-looking statements, these statements involve important risks, uncertainties and other factors that could cause actual results to differ materially from the expected results and, accordingly, such results may differ from those expressed in any forward-looking statements made by us or on our behalf. Factors that might cause actual results to differ materially from our expectations are set forth in the “Risk Factors” section of our Annual Report on Form 10-K for the year ended December 31, 2023 and in Part II, Item 1A of our Quarterly Report on From 10-Q for the quarter ended June 30, 2024. Accordingly, we caution readers not to place undue reliance on forward-looking statements. We assume no obligation to update or supplement forward-looking statements that become untrue because of subsequent events except as required by law.

The discussion that follows is based primarily on our consolidated financial statements as of September 30, 2024 and December 31, 2023 and for the three and nine months ended September 30, 2024 and 2023 and should be read along with the consolidated financial statements and related notes appearing elsewhere in this report. The ability to compare one period to another may be significantly affected by acquisitions completed, development/redevelopment properties placed in service and dispositions made during those periods.

OVERVIEW

During the nine months ended September 30, 2024, we owned and managed properties within four segments: (1) Philadelphia CBD, (2) Pennsylvania Suburbs, (3) Austin, Texas, and (4) Other. The Philadelphia CBD segment includes properties located in the City of Philadelphia in Pennsylvania. The Pennsylvania Suburbs segment includes properties in Chester, Delaware and Montgomery counties in the Philadelphia suburbs. The Austin, Texas segment includes properties in the City of Austin, Texas. The Other segment includes properties located in the District of Columbia, Northern Virginia, Southern Maryland, Camden County, New Jersey and New Castle County, Delaware. In addition to the four segments, our corporate group is responsible for cash and investment management, development/redevelopment of certain properties during the construction period, and certain other general support functions.

Our financial condition and operating performance are dependent upon the demand for office, residential, life science, parking and retail space in our markets, our leasing results, our acquisition, disposition and development/redevelopment activity, our financing activity, our cash requirements and economic and market conditions, including prevailing interest rates.

We generate cash and revenue from leases of space at our Properties and, to a lesser extent, from the management and development/redevelopment of properties owned by third parties (primarily unconsolidated real estate ventures) and from investments in the unconsolidated real estate ventures. Factors that we evaluate when leasing space include rental rates, costs of tenant improvements, tenant creditworthiness, current and expected operating costs, the length of the lease term, vacancy levels and demand for space. We also generate cash through sales of assets, including assets that we do not view as core to our business plan, either because of location or expected growth potential, and assets that are commanding premium prices from third party investors.

Overall macroeconomic conditions, including but not limited to inflation and high interest rates and changes in work patterns, including remote working arrangements, that have contributed to negative lease absorption within our office markets, have had a dampening effect on the fundamentals of our business, as reflected in, among other metrics, our increased borrowing costs and lower occupancy as well as downward pressures on asset valuations. These adverse conditions could continue to impact our net income, cash flows and liquidity and could have a material adverse effect on our financial condition and results of operations.

Notwithstanding the challenging macroeconomic conditions, which have contributed to recent difficulties in asset dispositions at acceptable prices, leasing of vacant space at attractive rents and sourcing of capital for development projects at acceptable costs, as well as to impairments of assets, we believe that our portfolio or Properties and investments, and liquidity profile, will allow us to maintain stable operating performance. In our ongoing assessment of our Properties we consider both their quantitative and qualitative attributes, including in relation to other properties within a given submarket or adjacent submarkets that compete with our portfolio for tenants. The attributes that we consider in our assessment include the age and condition of the property, average asking rental rates, access to mass transit and highways, floorplate efficiencies, amenities within, and

33

nearby, the property and availability of parking as well as market demographics such that bear on demand for space at our portfolio. We also believe that our portfolio and liquidity profile will enable us to raise capital, as necessary, in various forms and from different sources, including through secured or unsecured loans from banks, pension funds and life insurance companies. However, there can be no assurance that we will be able to borrow funds on terms that are economically attractive or at all.

We continue to seek revenue growth throughout our portfolio by increasing occupancy and rental rates. Occupancy at our Core Properties at September 30, 2024 was 87.2% compared to 88.3% at September 30, 2023.

The table below summarizes selected operating and leasing statistics of our Core Properties for the three and nine months ended September 30, 2024 and 2023:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2024			2023			2024			2023
Leasing Activity
Core Properties (1):
Total net rentable square feet owned	12,176,827			12,598,531			12,176,827			12,598,531
Occupancy percentage (end of period)	87.2		%	88.3		%	87.2		%	88.3		%
Average occupancy percentage	87.3		%	88.8		%	87.8		%	89.1		%
Total Portfolio, less properties in development/redevelopment (2):
Tenant retention rate (3)	42.0		%	44.1		%	60.9		%	50.8		%
New leases and expansions commenced (square feet)	72,962			59,750			327,947			219,216
Leases renewed (square feet)	102,254			115,633			496,232			338,378
Net (negative) absorption (square feet)	(68,481)			(145,408)			(160,949)			(236,384)
Percentage change in rental rates per square foot (4):
New and expansion rental rates	18.0		%	—		%	19.8		%	21.1		%
Renewal rental rates	14.3		%	2.8		%	12.5		%	11.8		%
Combined rental rates	14.9		%	2.8		%	13.9		%	13.6		%
Weighted average lease term for leases commenced (years)	6.2			6.0			6.2			6.9
Average annual rent (per square foot) (7) (8)	$	35.41		$	33.53		$	40.08		$	37.37
Capital Costs Committed (5, 6, 7):
Leasing commissions (per square foot)	$	7.90		$	1.53		$	8.20		$	8.12
Tenant improvements (per square foot)	$	13.50		$	6.02		$	22.93		$	14.77
Total capital per square foot per lease year	$	3.06		$	3.24		$	4.04		$	3.26
Average annualized capital as % of average annual rent (7) (8)	10.2		%	11.7		%	12.5		%	9.9		%

(1)Does not include Properties under development/redevelopment, or recently completed not-stabilized Properties.

(2)Includes leasing at recently completed not-stabilized Properties. The statistics presented for periods ended prior to the three-month period ended September 30, 2024 have not been adjusted for properties sold subsequent to the periods presented.

(3)Calculated as percentage of total net rentable square feet.

(4)Includes base rent plus reimbursement for operating expenses and real estate taxes.

(5)Calculated on a weighted average basis.

(6)The increases for the three and nine months ended September 30, 2024 are primarily due to leases having a higher average lease terms and a higher percentage of new leases compared to renewals.

(7)For comparison purposes, we exclude new leases of space when the previous lease of such space ended more than 12 months prior to the signing date for the new leases.

(8)Average annual rent represents total initial contractual rent under the applicable leases plus contractual fixed rent increases due under the applicable leases averaged over the total terms of the applicable leases.

Our actual leasing capital costs as a percentage of rents are largely a function of the composition of our leases to new tenants or renewals with existing tenants, in addition to size and timing of occupancy. We generally experience lower leasing costs in connection with the renewal of leases with existing tenants compared to leases with new tenants. Our properties compete for tenants with similar properties primarily on the basis of location, total occupancy costs (including base rent and operating expenses), services and amenities, and the design and condition of the properties. As leases at our properties expire, we face competition to renew or re-let space in light of the competing properties within the applicable markets. As a result, and as part of customary lease negotiations, we are often required to provide rent concessions or abatements, incur charges for tenant

34

improvements and other inducements, including early termination rights or potential below market renewal options, all of which impact, in varying degrees, annualized rents.

The table below summarizes occupancy statistics of our Core Properties by segment for the nine months ended September 30, 2024 and 2023:

	Nine Months Ended September 30,
	% Occupied		% Occupied
	2024		2023
	% Occupied		% Occupied
Philadelphia CBD	93.6	%	95.2	%
Pennsylvania Suburbs	86.2	%	89.4	%
Austin, Texas	79.5	%	81.7	%
Other	82.0	%	73.8	%
Total - Core Properties	87.2	%	88.3	%

The table below summarizes the occupancy statistics of our Properties, broken down by property types for the nine months ended September 30, 2024 and 2023:

	Nine Months Ended September 30,				Nine Months Ended September 30,
	% Net Operating Income (4)		% Net Operating Income (4)		% Occupied		% Occupied
	2024		2023		2024		2023
Office	91.2	%	91.3	%	87.0	%	89.2	%
Life Science (1)	5.9	%	5.8	%	84.4	%	83.0	%
Residential (2)	2.9	%	2.9	%	85.0	%	87.0	%
Total (3)	100.0	%	100.0	%	86.9	%	88.9	%

(1)Represents Philadelphia portfolio assets located at 3000 Market Street and 3025 Market Street in Philadelphia, Pennsylvania, dedicated life science floors at Cira Centre in Philadelphia, Pennsylvania and 250 King of Prussia Road in Radnor, Pennsylvania.

(2)Represents our residential operation at 2929 Walnut Street in Philadelphia, Pennsylvania.

(3)Does not include Properties under development/redevelopment.

(4)See Note 13“Segment Information,” to our Consolidated Financial Statements for the definition of Net Operating Income.

In seeking to increase revenue through our operating, financing and investment activities, we also seek to minimize operating risks, including (i) tenant rollover risk, (ii) tenant credit risk and (iii) development risk.

We have compared our weighted-average in-place rental rates to our leases signed in 2024 and our current market leasing assumptions, and while the actual results will be dependent on the leases expiring in any particular period, we believe the current portfolio should generate positive rental rate increases for the remainder of fiscal 2024.

Tenant Rollover Risk

We are subject to the risk that tenant leases, upon expiration, will not be renewed, that space may not be relet, or that the terms of renewal or reletting (including the cost of renovations) may be less favorable to us than the current lease terms. Leases that accounted for approximately 0.8% of our total square footage as of September 30, 2024 (representing approximately 0.9% of the occupied rentable square feet of the properties) are scheduled to expire without penalty during the remainder of 2024. We maintain an active dialogue with our tenants in an effort to maximize lease renewals. If we are unable to renew leases or relet space under expiring leases, at anticipated rental rates, or if our tenants terminate their leases early, our cash flow would be adversely impacted.

Tenant Credit Risk

In the event of a tenant default, we may experience delays in enforcing our rights as a landlord and may incur substantial costs in protecting our investment. Our management evaluates our accrued rent receivable reserve policy in light of our tenant base and general and local economic conditions. Our accrued rent receivable allowance was $1.3 million or 0.7% of our accrued rent

35

receivable balance as of September 30, 2024, compared to $2.7 million or 1.4% of our accrued rent receivable balance as of December 31, 2023.

If economic conditions deteriorate, including as a result of inflation and rising interest rates, we may experience increases in past due accounts, defaults, lower occupancy and reduced effective rents. These conditions would negatively affect our future net income and cash flows and could have a material adverse effect on our financial condition.

Development and Redevelopment Risk

Development and Redevelopment projects are subject to a variety of risks, including construction delays, construction cost overruns, building moratoriums, inability to obtain financing on favorable terms, inability to lease space at projected rates, inability to enter into construction, development, redevelopment and other agreements on favorable terms, and unexpected environmental and other hazards.

As of September 30, 2024, the following development project, within our consolidated portfolio, remains under construction in progress (dollars, in thousands):

Property/Portfolio Name	Location	Expected Completion Date	Activity Type	Approximate Square Footage	Estimated Costs		Construction Loan Financing		Amount Funded (a)
155 King of Prussia Road	Radnor, PA	Q4 2024	Development	144,685	$	80,000	$	50,000	$	60,853

(a)The Company has fully funded its $30.0 million equity commitment, and the balance of the construction costs are expected to be funded through advances under the construction loan.

In addition to the property listed above, we have classified one parking facility in Philadelphia, Pennsylvania as redevelopment.

As of September 30, 2024, the following unconsolidated real estate venture development projects remain under construction in progress (dollars, in thousands):

Property/Portfolio Name	Location	Substantial Completion Date	Approximate Square Footage	Estimated Costs		Amount Funded		Construction Loan Financing		Our Share Remaining to be Funded		Partner's Share Remaining to be Funded
3025 JFK Boulevard (60%)	Philadelphia, PA	Q4 2023	(a)	$	300,000	$	285,346	$	186,727	$	—	$	—
3151 Market Street (65%)	Philadelphia, PA	Q4 2024	441,000	$	316,909	$	199,383	(b)		(b)		$	—
One Uptown - Office (56%)	Austin, TX	Q1 2024	362,679	$	201,616	$	149,454	$	121,650	$	—	$	—
One Uptown - Multifamily (50%)	Austin, TX	Q3 2024	341 Units	$	144,029	$	121,916	$	85,000	$	—	$	—

(a)Mixed used building with 428,000 rentable square feet consisting of 200,000 square feet of life science, 219,000 square feet of residential (326 units), and 9,000 square feet of retail.

(b)The development budget contemplated receipt of a construction loan of approximately $174.3 million, reflecting a 55% loan to value ratio and, as of the date of this Form 10-Q, no construction loan has been obtained and there can be no assurance that a loan will be obtained. In the event that costs are incurred before a construction loan has been obtained, the Company expects to fund such costs through its credit facilities and cash on hand.

As of the date of this Quarterly Report on Form 10-Q, the 3151 Market Street Venture has not secured a construction loan. Under the partnership agreement with our partner in this real estate venture, after our partner has funded the remaining balance of its capital commitment, as shown in the table above, then, until a construction loan has been obtained, we will be obligated to fund the balance of construction costs incurred in the project development.

CRITICAL ACCOUNTING POLICIES AND ESTIMATES

Management’s Discussion and Analysis of Financial Condition and Results of Operations discuss our consolidated financial statements, which have been prepared in accordance with GAAP. The preparation of these financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and the disclosure of contingent liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. Certain accounting policies are considered to be critical accounting policies, as they require management to make assumptions about matters that are highly uncertain at the time the estimate is made and changes in accounting estimate are reasonably likely to occur from period to period. Management bases its estimates and assumptions on historical experience and current economic conditions.

Our Annual Report on Form 10-K for the year ended December 31, 2023 contains a discussion of our critical accounting policies. There have been no significant changes in our critical accounting policies since December 31, 2023.

36

RESULTS OF OPERATIONS

The following discussion is based on our consolidated financial statements for the three and nine months ended September 30, 2024 and 2023. We believe that presentation of our consolidated financial information, without a breakdown by segment, will effectively present important information useful to our investors.

Net operating income (“NOI”) as presented in the comparative analysis below is a non-GAAP financial measure defined as total revenue less property operating expenses, real estate taxes and third party management expenses. Property operating expenses that are included in determining NOI consist of costs that are necessary and allocable to our operating properties such as utilities, property-level salaries, repairs and maintenance, property insurance, and management fees. General and administrative expenses that are not reflected in NOI primarily consist of corporate-level salaries, amortization of share awards and professional fees that are incurred as part of corporate office management. NOI is a non-GAAP financial measure that we use internally to evaluate the operating performance of our real estate assets by segment, as presented in Note 13“Segment Information,” to our consolidated financial statements, and of our business as a whole. We believe NOI provides useful information to investors regarding our financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. While NOI is a relevant and widely used measure of operating performance of real estate investment trusts, it does not represent cash flow from operations or net income as defined by GAAP and should not be considered as an alternative to those measures in evaluating our liquidity or operating performance. NOI does not reflect interest expenses, real estate impairment losses, depreciation and amortization costs, capital expenditures and leasing costs. We believe that net income, as defined by GAAP, is the most appropriate earnings measure. See Note 13“Segment Information,” to our Consolidated Financial Statements for a reconciliation of NOI to our consolidated net income as defined by GAAP.

Comparison of the Three Months Ended September 30, 2024 and September 30, 2023

The following comparison of the three months ended September 30, 2024 to the three months ended September 30, 2023 makes reference to the effect of the following:

(a)“Same Store Property Portfolio,” which represents 63 properties containing an aggregate of approximately 11.9 million net rentable square feet, and represents properties that we owned and consolidated for the three-month periods ended September 30, 2024 and 2023. The Same Store Property Portfolio includes properties acquired or placed in service on or prior to July 1, 2023 and owned and consolidated through September 30, 2024, excluding properties classified as held for sale;

(b)“Total Portfolio,” which represents all properties owned and consolidated by us during the three months ended September 30, 2024 and 2023;

(c)“Recently Completed/Acquired Properties,” which represents two properties placed into service or acquired on or subsequent to July 1, 2023;

(d)“Development/Redevelopment Properties,” which represents two properties currently in development/redevelopment. A property is excluded from our Same Store Property Portfolio and moved into Development/Redevelopment Properties in the period that we determine to proceed with development/redevelopment for a future development strategy; and

(e)“Q3 2023 through Q3 2024 Dispositions,” which represents five properties disposed of from July 1, 2023 through September 30, 2024.

37

Comparison of the three months ended September 30, 2024 to the three months ended September 30, 2023

	Same Store Property Portfolio										Recently Completed/Acquired Properties				Development/Redevelopment Properties				Other (Eliminations) (a)				Total Portfolio
(dollars and square feet in millions except per share amounts)	2024			2023			$ Change		% Change		2024		2023		2024		2023		2024		2023		2024		2023		$ Change		% Change
Revenue:
Rents	$	107.3		$	108.5		$	(1.2)	(1.1)	%	$	3.9	$	3.2	$	—	$	—	$	6.8	$	10.0	$	118.0	$	121.7	$	(3.7)	(3.0)	%
Third party management fees, labor reimbursement and leasing	—			—			—		—	%	—		—		—		—		6.1		6.6		6.1		6.6		(0.5)		(7.6)	%
Other	0.3			0.2			0.1		50.0	%	—		—		—		—		7.4		1.0		7.7		1.2		6.5		541.7	%
Total revenue	107.6			108.7			(1.1)		(1.0)	%	3.9		3.2		—		—		20.3		17.6		131.8		129.5		2.3		1.8	%
Property operating expenses	27.8			27.7			0.1		0.4	%	0.8		0.7		—		—		3.3		2.7		31.9		31.1		0.8		2.6	%
Real estate taxes	10.8			11.6			(0.8)		(6.9)	%	0.4		0.1		—		—		0.7		1.1		11.9		12.8		(0.9)		(7.0)	%
Third party management expenses	—			—			—		—	%	—		—		—		—		2.5		2.5		2.5		2.5		—		—	%
Net operating income	69.0			69.4			(0.4)		(0.6)	%	2.7		2.4		—		—		13.8		11.3		85.5		83.1		2.4		2.9	%
Depreciation and amortization	37.2			38.7			(1.5)		(3.9)	%	2.3		0.8		—		—		4.8		9.5		44.3		49.0		(4.7)		(9.6)	%
General & administrative expenses	—			—			—		—	%	—		—		—		—		12.7		8.1		12.7		8.1		4.6		56.8	%
Provision for impairment (c)	—			—			—		—	%	—		—		—		—		38.0		11.7		38.0		11.7		26.3		224.8	%
Operating income (loss)	$	31.8		$	30.7		$	1.1	3.6	%	$	0.4	$	1.6	$	—	$	—	$	(41.7)	$	(18.0)	$	(9.5)	$	14.3	$	(23.8)	(166.4)	%
Number of properties	63			63							2				2								67
Square feet	11.9			11.9							0.4				0.1								12.5
Core Occupancy % (b)	87.0		%	89.0		%
Other Income (Expense):
Interest and investment income																							0.6		0.3		0.3		100.0	%
Interest expense																							(30.6)		(24.4)		(6.2)		25.4	%
Interest expense — Deferred financing costs																							(1.1)		(1.1)		—		—	%
Equity in loss of unconsolidated real estate ventures																							(125.9)		(10.7)		(115.2)		1076.6	%
Net gain on real estate venture transactions																							0.8		—		0.8		—	%
Net loss																							$	(165.7)	$	(21.6)	$	(144.1)	667.1	%
Net loss attributable to Common Shareholders of Brandywine Realty Trust																							$	(0.96)	$	(0.13)	$	(0.83)	638.5	%

(a)Represents certain revenues and expenses at the corporate level as well as various intercompany costs that are eliminated in consolidation, third-party management fees, provisions for impairment, and changes in the accrued rent receivable allowance. Other(Eliminations) also includes properties sold and properties classified as held for sale.

(b)Pertains to Core Properties.

(c)Held for use impairment charges are excluded from Same Store Property Portfolio operating income and presented in Other (Eliminations).

38

Rents

Rents decreased primarily as a result of the following:

•$1.6 million decrease due to the sales of 8521 Leesburg Pike, Vienna, VA in the fourth quarter of 2023, Three Barton Skyway, Austin, TX in the third quarter of 2023 and 200 North Radnor Chester Road, Radnor, PA in the fourth quarter of 2023;

•$0.5 million decrease due to the early termination of a single tenant occupant at a property in Austin, TX;

•$0.7 million increase related to our Recently Completed/Acquired Properties, which are comprised of 2430 Dulles Corner, Herndon, VA and 250 King of Prussia Road, Radnor, PA; and

•$2.3 million decrease due to net changes in leasing activity within the remainder of the portfolio.

Other Revenue

Other revenue includes $6.5 million of insurance proceeds in connection with the resolution of a legal dispute that was settled during the third quarter of 2024.

Depreciation and Amortization

Depreciation and Amortization decreased primarily as a result of the following:

•$2.3 million decrease related to accelerated depreciation on tenant improvements due to the early termination of a single tenant occupant at a property in our Austin, Texas segment in 2023;

•$1.5 million decrease related to the reduction in the cost basis of assets as a result of the provision for impairment recorded on two properties in the Metropolitan Washington, D.C. area within our Other segment and five office properties located in our Pennsylvania Suburbs segment in 2023; and

•$0.4 million decrease related to the sales of three properties in 2023.

Provision for Impairment

During the third quarter of 2024, we recognized a provision for impairment of $34.1 million on three properties, two of which are located in the Austin, Texas segment and one which is in the Other segment. We also recognized a provision for impairment of $3.9 million on two disposition transactions during the third quarter of 2024. See Note 3“Real Estate Investments,” for further information.

Interest Expense

Interest expense increased primarily due to our issuance of $400 million aggregate principal amount of our 8.875% Guaranteed Notes due 2029 (the “2029 Notes”) in April 2024, partially offset by the redemption of our 2024 $350.0 million 4.10% Guaranteed Notes. Additionally, interest expense increased during the third quarter of 2023 when Moody’s downgraded our senior unsecured credit rating from Baa3 to Ba1. As a result of the downgrade, the interest rate on our 7.55% Guaranteed Notes due 2028 (the “2028 Notes”) increased 25 basis points in September 2023 due to the coupon adjustment provisions within the 2028 Notes. During the first quarter of 2024, S&P downgraded our senior unsecured credit rating from BBB- to BB+. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.05% in March 2024 due to the coupon adjustment provisions within the 2028 Notes. During the second quarter of 2024, Moody's downgraded our senior unsecured credit rating from Ba1 to Ba2. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.30% in April 2024 due to the coupon adjustment provisions within the 2028 Notes.

Equity in Loss of Real Estate Ventures

Equity in loss of real estate ventures increased primarily due to the Company's recognition of an impairment charge on the properties in the Commerce Square Venture. Additionally, the Company recognized an other than temporary impairment loss on its investment in the 4040 Wilson Venture which was offset by the income at the Mid-Atlantic Office Venture.

39

Comparison of the Nine Months Ended September 30, 2024 and September 30, 2023

The following comparison of the nine months ended September 30, 2024 to the nine months ended September 30, 2023 makes reference to the effect of the following:

(a)“Same Store Property Portfolio,” which represents 63 properties containing an aggregate of approximately 11.9 million net rentable square feet, and represents properties that we owned and consolidated for the nine-month periods ended September 30, 2024 and 2023. The Same Store Property Portfolio includes properties acquired or placed in service on or prior to January 1, 2023 and owned and consolidated through September 30, 2024 excluding properties classified as held for sale;

(b)“Total Portfolio,” which represents all properties owned and consolidated by us during the nine months ended September 30, 2024 and 2023;

(c)"Recently Completed/Acquired Properties," which represents two properties placed into service or acquired on or subsequent to January 1, 2023;

(d)"Development/Redevelopment Properties," which represents two properties currently in development/redevelopment. A property is excluded from our Same Store Property Portfolio and moved into Development/Redevelopment in the period that we determine to proceed with development/redevelopment for a future development strategy; and

(e)"YTD 2023 and 2024 Dispositions," which represents six properties disposed of from January 1, 2023 through September 30, 2024.

40

Comparison of the nine months ended September 30, 2024 to the nine months ended September 30, 2023

	Same Store Property Portfolio										Recently Completed/Acquired Properties					Development/Redevelopment Properties				Other (Eliminations) (a)				Total Portfolio
(dollars and square feet in millions except per share amounts)	2024			2023			$ Change		% Change		2024			2023		2024		2023		2024		2023		2024		2023		$ Change		% Change
Revenue:
Rents	$	321.3		$	324.0		$	(2.7)	(0.8)	%	$	11.7		$	5.3	$	—	$	—	$	22.0	$	31.3	$	355.0	$	360.6	$	(5.6)	(1.6)	%
Third party management fees, labor reimbursement and leasing	—			—			—		—	%	—			—		—		—		17.7		18.8		17.7		18.8		(1.1)		(5.9)	%
Other	0.8			0.8			—		—	%	—			—		—		—		10.1		4.3		10.9		5.1		5.8		113.7	%
Total revenue	322.1			324.8			(2.7)		(0.8)	%	11.7			5.3		—		—		49.8		54.4		383.6		384.5		(0.9)		(0.2)	%
Property operating expenses	84.0			84.7			(0.7)		(0.8)	%	2.4			0.9		—		—		9.1		11.0		95.5		96.6		(1.1)		(1.1)	%
Real estate taxes	33.9			34.9			(1.0)		(2.9)	%	0.9			0.4		(0.1)		—		2.3		3.7		37.0		39.0		(2.0)		(5.1)	%
Third party management expenses	—			—			—		—	%	—			—		—		—		7.5		7.7		7.5		7.7		(0.2)		(2.6)	%
Net operating income	204.2			205.2			(1.0)		(0.5)	%	8.4			4.0		0.1		—		30.9		32.0		243.6		241.2		2.4		1.0	%
Depreciation and amortization	111.5			115.1			(3.6)		(3.1)	%	6.8			3.5		—		—		15.2		23.0		133.5		141.6		(8.1)		(5.7)	%
General & administrative expenses	—			—			—		—	%	—			—		—		—		32.7		26.9		32.7		26.9		5.8		21.6	%
Provision for impairment (c)	—			—			—		—	%	—			—		—		—		44.4		16.1		44.4		16.1		28.3		175.8	%
Net loss on disposition of real estate																								—		—		—		—	%
Net gain on sale of undepreciated real estate																								—		(0.8)		0.8		(100.0)	%
Operating income (loss)	$	92.7		$	90.1		$	2.6	2.9	%	$	1.6		$	0.5	$	0.1	$	—	$	(61.4)	$	(34.0)	$	33.0	$	57.4	$	(24.4)	(42.5)	%
Number of properties	63			63							2					2								68
Square feet	11.9			11.9							0.4					0.1								15.2
Core Occupancy % (b)	87.0		%	89.0		%					56.4		%
Other Income (Expense):
Interest and investment income																								2.6		1.3		1.3		100.0	%
Interest expense																								(85.1)		(70.7)		(14.4)		20.4	%
Interest expense — Deferred financing costs																								(3.8)		(3.3)		(0.5)		15.2	%
Equity in loss of unconsolidated real estate ventures																								(154.0)		(24.5)		(129.5)		528.6	%
Net gain on real estate venture transactions																								54.5		0.2		54.3		27150.0	%
Gain on early extinguishment of debt																								0.9		—		0.9
Net loss																								$	(151.9)	$	(39.6)	$	(112.3)	283.6	%
Net loss attributable to Common Shareholders of Brandywine Realty Trust																								$	(0.88)	$	(0.23)	$	(0.65)	282.6	%

(a)Represents certain revenues and expenses at the corporate level as well as various intercompany costs that are eliminated in consolidation, third-party management fees, provisions for impairment, and changes in the accrued rent receivable allowance. Other/(Eliminations) also includes properties sold and properties classified as held for sale.

(b)Pertains to Core Properties.

(c)Held for use impairment charges are excluded from Same Store Property Portfolio operating income and presented in Other (Eliminations).

41

Rents

Rents decreased primarily as a result of the following:

•$6.4 million decrease due to the sales of 8521 Leesburg Pike, Vienna, VA in the fourth quarter of 2023, Three Barton Skyway, Austin, TX in the third quarter of 2023 and 200 North Radnor Chester Road, Radnor, PA in the fourth quarter of 2023;

•$2.5 million decrease due to the early termination of a single tenant occupant at a property in Austin, TX;

•$6.4 million increase related to our Recently Completed/Acquired Properties, which are comprised of 2430 Dulles Corner, Herndon, VA and 250 King of Prussia Road, Radnor, PA; and

•$3.2 million decrease due to net changes in leasing activity within the remainder of the portfolio.

Other Revenue

Other revenue includes $6.5 million of insurance proceeds in connection with the resolution of a legal dispute that was settled during the third quarter of 2024.

Depreciation and Amortization

Depreciation and amortization expense decreased primarily as a result of the following:

•$4.0 million decrease related to accelerated depreciation on tenant improvements due to the early termination of a single tenant occupant at a property in our Austin, Texas segment in 2023;

•$4.4 million decrease related to the reduction in the cost basis of assets as a result of the provision for impairment recorded on two properties in the Metropolitan Washington, D.C. area within our Other segment and five office properties located in our Pennsylvania Suburbs segment in 2023;

•$2.7 million decrease related to the sales of three properties in 2023; and

•Partially offset by a $3.2 million increase related to two properties which were placed in service in the second half of 2023.

Provision for Impairment

During the second quarter of 2024, we recognized a provision for impairment of $6.4 million on office properties located in our Austin, Texas segment. During the third quarter of 2024, we recognized a provision for impairment of $34.1 million on three properties, two located in the Austin, Texas segment and one in the Other segment. We also recognized a provision for impairment of $3.9 million on two disposition transactions during the third quarter of 2024. See Note 3 “Real Estate Investments,” for further information.

Interest Expense

Interest expense increased primarily due to our issuance of $400 million aggregate principal amount of 2029 Notes in April 2024, partially offset by the redemption of our 2024 $350.0 million 4.10% Guaranteed Notes. Additionally, interest expense increased during the third quarter of 2023 when Moody’s downgraded our senior unsecured credit rating from Baa3 to Ba1. As a result of the downgrade, the interest rate on our 2028 Notes increased 25 basis points in September 2023 due to the coupon adjustment provisions within the 2028 Notes. During the first quarter of 2024, S&P downgraded our senior unsecured credit rating from BBB- to BB+. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.05% in March 2024 due to the coupon adjustment provisions within the 2028 Notes. During the second quarter of 2024, Moody's downgraded our senior unsecured credit rating from Ba1 to Ba2. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.30% in April 2024 due to the coupon adjustment provisions within the 2028 Notes.

Equity in Loss of Unconsolidated Real Estate Ventures

Equity in loss of real estate ventures increased primarily due to the Company's recognition of an impairment charge on the properties in the Commerce Square Venture. See Note 4“Investment in Unconsolidated Real Estate Ventures,” for further information. Additionally, the increased losses from our unconsolidated real estate ventures are due to higher interest rates on the ventures’ outstanding indebtedness.

Net gain on real estate venture transactions

On June 28, 2024, we recapitalized our Original MAP Venture, in which we had a negative investment balance of $52.2 million as of March 31, 2024. In connection with the recapitalization, we recognized a one-time, non-cash gain of $53.8 million in connection with the derecognition of the negative investment balance in the Original MAP Venture. See Note 4“Investment in Unconsolidated Real Estate Ventures,” for further information.

42

LIQUIDITY AND CAPITAL RESOURCES

General

Our principal liquidity funding needs for the next twelve months are as follows:

•normal recurring expenses;

•capital expenditures, including capital and tenant improvements and leasing costs;

•debt service and principal repayment obligations;

•current development and redevelopment costs;

•commitments to unconsolidated real estate ventures and investment vehicles;

•distributions to shareholders to maintain our REIT status;

•possible acquisitions of properties, either directly or indirectly through the acquisition of equity interest therein; and

•possible common share repurchases.

We expect to satisfy these needs using one or more of the following:

•cash flows from operations;

•distributions of cash from our unconsolidated real estate ventures;

•cash and cash equivalent balances;

•availability under our Unsecured Credit Facility;

•secured construction loans and long-term unsecured indebtedness;

•sales of real estate or contributions of interests in real estate to joint ventures; and

•issuances of Parent Company equity securities and/or units of the Operating Partnership.

As of September 30, 2024, the Parent Company owned a 99.7% interest in the Operating Partnership. The remaining interest of approximately 0.3% pertains to common limited partnership interests owned by non-affiliated investors who contributed property to the Operating Partnership in exchange for their interests. As the sole general partner of the Operating Partnership, the Parent Company has full and complete responsibility for the Operating Partnership’s day-to-day operations and management. The Parent Company’s source of funding for its dividend payments and other obligations is the distributions it receives from the Operating Partnership.

As summarized above, we believe that our liquidity needs will be satisfied through available cash balances and cash flows from operations, financing activities and real estate sales. Rental revenue and other income from operations are our principal sources of cash to pay operating expenses, debt service, recurring capital expenditures and the minimum distributions required to maintain our REIT qualification. We seek to increase cash flows from our properties by maintaining quality standards for our properties that promote high occupancy rates and permit increases in rental rates while reducing tenant turnover and controlling operating expenses. Our revenue also includes third-party fees generated by our property management, leasing, development/redevelopment and construction businesses. We believe that our revenue, together with proceeds from property sales and debt financings, will continue to provide funds for our short-term liquidity needs. However, material changes in our operating or financing activities may adversely affect our net cash flows. With uncertain economic conditions, vacancy rates may increase, rental rates on new and renewed leases may decrease and tenant installation costs, including concessions, may increase in most or all of our markets during the remainder of 2024 and possibly beyond. As a result, our revenues and cash flows could be insufficient to cover operating expenses, including increased tenant installation costs, pay debt service or make distributions to shareholders over the short-term. If this situation were to occur, we expect that we would finance cash deficits through borrowings under our unsecured credit facility and other sources of debt and equity financings. In addition, a material adverse change in cash provided by operations could adversely affect our compliance with financial performance covenants under our unsecured credit facility, including unsecured term loans and unsecured notes. As of September 30, 2024 we were in compliance with all of our debt covenants and requirement obligations.

On April 12, 2024, we completed an underwritten offering of $400.0 million aggregate principal amount of the 2029 Notes. The 2029 Notes were priced at approximately 99.51% of their face amount. We received approximately $391.8 million of net proceeds after the deduction for underwriting discounts and offering expenses.

On April 15, 2024, we commenced a tender offer (the “Tender Offer”) for any and all of the outstanding $335.1 million principal amount of our 4.10% Guaranteed Notes due 2024 (the “2024 Notes”). The purchase price offered per $1,000 principal amount of 2024 Notes pursuant to the Tender Offer was determined by reference to the fixed spread for the 2024 Notes of 0 basis points plus the yield based on the bid-side price of the 4.250% U.S. Treasury due September 30, 2024. The Tender Offer expired on April 19, 2024. Upon completion of the Tender Offer, on April 23, 2024, we issued a redemption notice to redeem any 2024 Notes that remained outstanding after the Tender Offer. On June 7, 2024, we redeemed the remaining $113.4 million of our 2024 Bonds at the aggregate principal amount outstanding together with accrued and unpaid interest thereon to the redemption date.

43

The 2028 Notes include an interest rate adjustment provision whereby the interest rate payable on the 2028 Notes is subject to a 25 basis point adjustment if either Moody's Investors Services Inc, and its successors ("Moody's"), or S&P Global Ratings, and its successors ("S&P") downgrades (or subsequently upgrades) its rating assigned to the 2028 Notes. During the third quarter of 2023, Moody’s downgraded our senior unsecured credit rating from Baa3 to Ba1. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 7.80% in September 2023. In January 2024, S&P downgraded our senior unsecured credit rating from BBB- to BB+. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.05% in March 2024. During the second quarter of 2024, Moody's downgraded our senior unsecured credit rating from Ba1 to Ba2. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.30% in April 2024 due to the coupon adjustment provisions within the 2028 Notes.

Our ability to incur additional debt is dependent upon a number of factors, including our credit ratings, the value of our unencumbered assets, our degree of leverage and borrowing restrictions imposed by our lenders. If one or more rating agencies were to downgrade our unsecured credit rating, our access to the unsecured debt market would be more limited and the interest rate under our unsecured credit facility and unsecured term loan would increase.

As of September 30, 2024, our senior unsecured credit ratings and outlook were as follows:

	Moody's	S&P
Long-term debt	Ba2	BB+
Outlook	Stable	Stable

If our credit ratings are lowered further, our ability to access the public debt markets, our costs of funds, and other terms for new debt issuances could be adversely impacted. Each of the credit ratings agencies reviews its ratings periodically and there is no guarantee our current credit ratings will remain the same.

The Parent Company unconditionally guarantees the Operating Partnership’s unsecured debt obligations, which, as of September 30, 2024, amounted to $2,001.6 million. The Operating Partnership’s secured debt obligations as of September 30, 2024, amounted to $274.8 million

Capital Markets

The Parent Company issues equity from time to time, the proceeds of which it contributes to the Operating Partnership in exchange for additional interests in the Operating Partnership, and guarantees debt obligations of the Operating Partnership. The Parent Company’s ability to sell common shares and preferred shares is dependent on, among other things, general market conditions for REITs, market perceptions about the Company as a whole and the current trading price of the Parent Company’s shares. The Parent Company maintains a shelf registration statement that covers the offering and sale of common shares, preferred shares, depositary shares, warrants and unsecured debt securities. Subject to our ongoing compliance with securities laws, and if warranted by market conditions, we may offer and sell equity and debt securities from time to time under the shelf registration statement or in transactions exempt from registration.

See Note 11“Beneficiaries' Equity of the Parent Company,” to our Consolidated Financial Statements for further information related to our share repurchase program. We expect to fund any additional share repurchases with a combination of available cash balances and availability under our unsecured credit facility. The timing and amounts of any repurchases will depend on a variety of factors, including market conditions, regulatory requirements, share prices, capital availability and other factors as determined by our management team. The repurchase program does not require the purchase of any minimum number of shares and may be suspended or discontinued at any time without notice.

Liquidity

As of September 30, 2024, we had $36.5 million of cash and cash equivalents and $520.8 million of available borrowings under our unsecured credit facility, net of $39.2 million in letters of credit outstanding. Based on the foregoing, as well as cash flows from operations net of dividend requirements, we believe we have sufficient capital to fund our remaining capital requirements on existing development and redevelopment projects and pursue additional attractive investment opportunities. We expect that our primary uses of capital during the remainder of 2024 will be to fund our current development and redevelopment projects.

Cash Flows

The following discussion of our cash flows is based on the consolidated statement of cash flows and is not meant to be a comprehensive discussion of the changes in our cash flows for the periods presented.

44

As of September 30, 2024 and December 31, 2023, we maintained cash and cash equivalents and restricted cash of $42.7 million and $67.5 million, respectively. We report and analyze our cash flows based on operating activities, investing activities, and financing activities. The following table summarizes changes in our cash flows (in thousands):

	Nine Months Ended September 30,
Activity	2024		2023		(Decrease) Increase
Operating	$	124,202	$	111,405	$	12,797
Investing	(193,031)		(139,451)		(53,580)
Financing	43,988		68,276		(24,288)
Net cash flows	$	(24,841)	$	40,230	$	(65,071)

Our principal source of cash flows is from the leasing of space at of our Properties. Our Properties provide a relatively consistent stream of cash flows that provides us with the resources to fund operating expenses, debt service and quarterly dividends.

Cash is used in investing activities to fund acquisitions, development, or redevelopment projects and recurring and nonrecurring capital expenditures. We selectively invest in new projects that we expect will enable us to take advantage of our development/redevelopment, leasing, financing, and property management skills and invest in existing buildings that meet our investment criteria for additional capital. During the nine months ended September 30, 2024, when compared to the nine months ended September 30, 2023, the change in investing cash flows was due to the following activities (in thousands):

	(Decrease) Increase
Capital expenditures and capitalized interest	13,419
Capital improvements/acquisition deposits/leasing costs	8,831
Unconsolidated real estate venture investments	(71,036)
Proceeds from the sale of properties	(6,035)
Capital distributions from unconsolidated real estate ventures	1,241
Increase in net cash used in investing activities	$	(53,580)

We generally fund our investment activity through the sale of real estate, property-level financing, unsecured and secured credit facilities, senior unsecured notes, and construction loans. From time to time, we may issue common or preferred shares of beneficial interest, or the Operating Partnership may issue common or preferred units of limited partnership interest. During the nine months ended September 30, 2024, when compared to the nine months ended September 30, 2023, the change in financing cash flows was due to the following activities (in thousands):

	(Decrease) Increase
Proceeds from debt obligations	$	72,943
Repayments of debt obligations	(115,258)
Dividends and distributions paid	20,066
Debt financing costs paid	(1,963)
Other financing activities	(76)
Decrease in net cash provided by financing activities	$	(24,288)

45

Capitalization

Indebtedness

The table below summarizes our secured and unsecured debt at September 30, 2024 and December 31, 2023:  

	September 30, 2024			December 31, 2023
	(dollars in thousands)
Balance: (a)
Fixed rate	$	2,136,610		$	1,985,000
Variable rate - unhedged	139,767			162,434
Total	$	2,276,377		$	2,147,434
Percent of Total Debt:
Fixed rate	93.9		%	92.4		%
Variable rate - unhedged	6.1		%	7.6		%
Total	100.0		%	100.0		%
Weighted-average interest rate at period end:
Fixed rate	6.1		%	5.1		%
Variable rate - unhedged	6.9		%	7.1		%
Total	6.2		%	5.2		%
Weighted-average maturity in years:
Fixed rate	4.1			3.8
Variable rate - unhedged	1.4			6.3
Total	3.9			4.0

(a)Consists of unpaid principal and does not reflect premium/discount or deferred financing costs.

Scheduled principal payments and related weighted average annual effective interest rates for our debt as of September 30, 2024, were as follows (dollars in thousands):

Period	Principal maturities		Weighted Average Interest Rate of Maturing Debt
2024 (three months remaining)	$	—	—	%
2025	70,000		6.8	%
2026	29,767		7.7	%
2027	753,000		4.6	%
2028	595,000		7.3	%
2029	750,000		6.8	%
2030	—		—	%
2031	—		—	%
2032	—		—	%
2033	—		—	%
Thereafter	78,610		5.2	%
Totals	$	2,276,377	6.2	%

Unsecured Debt

The Operating Partnership is the issuer of our unsecured notes which are fully and unconditionally guaranteed by the Parent Company. The indenture under which the Operating Partnership issued its unsecured notes contains financial covenants, including: (i) a leverage ratio not to exceed 60%; (ii) a secured debt leverage ratio not to exceed 40%; (iii) a debt service coverage ratio of greater than 1.5 to 1.0; and (iv) an unencumbered asset value of not less than 150% of unsecured debt. The Operating Partnership is in compliance with all covenants as of September 30, 2024.

The charter documents of the Parent Company and Operating Partnership do not limit the amount or form of indebtedness that the Operating Partnership may incur, and its policies on debt incurrence are solely within the discretion of the Parent

46

Company’s Board of Trustees, subject to the financial covenants in the credit agreement for our Unsecured Credit Facility, the indenture for our unsecured notes and in our other credit agreements.

Equity

In order to maintain its qualification as a REIT, the Parent Company is required to, among other things, pay dividends to its shareholders of at least 90% of its REIT taxable income. See Note 11“Beneficiaries' Equity of the Parent Company,” to our Consolidated Financial Statements for further information related to our dividends declared for the third quarter of 2024.

Inflation and Lease Pass-Through Provisions

Substantially all our leases are structured as base year or triple net leases which provide for reimbursement billings for operating expense pass-through charges, real estate tax and insurance reimbursements on a per square-foot basis, or in some cases, annual reimbursement of operating expenses above certain per square-foot allowances. In addition, as of September 30, 2024, approximately 96% of our leases (as a percentage of the aggregate net rentable square feet of our wholly-owned portfolio) contain annual rent escalations that are either fixed (generally ranging from 2.5% to 3.0% per lease year) or indexed based on a consumer price index or other indices. We believe such lease provisions mitigate adverse impacts of inflation on our earnings from real estate operations. However, recent inflation and higher interest rates have caused an increase in our borrowing costs, including on our variable rate debt, and on our operating expenses that are not subject to the lease pass-through provisions.

While we have experienced increased inflation, our Same Store Property Portfolio operating margins improved to 63.4% and 63.2% for the nine months ended September 30, 2024 and 2023, respectively, primarily due to the expense reimbursement provisions noted above. The expense reimbursement provisions in our leases resulted in Same Store Property Portfolio operating expense recovery rates of 53.6% and 54.1% for the nine months ended September 30, 2024 and 2023, respectively.

Other Contractual Obligations

We provide customary guarantees for certain development projects of our unconsolidated real estate ventures. See Note 14 “Commitments and Contingencies,” to our Consolidated Financial Statement for further details on payment guarantees provided on behalf of our real estate ventures and refer to our Annual Report on Form 10-K for the year ended December 31, 2023 for a discussion of our contractual obligations.

Funds from Operations (FFO)

Pursuant to the revised definition of FFO adopted by the Board of Governors of the National Association of Real Estate Investment Trusts (“NAREIT”), we calculate FFO by adjusting net income/(loss) attributable to common unit holders (computed in accordance with GAAP) for gains (or losses) from sales of properties, impairment losses on depreciable consolidated real estate, impairment losses on investments in unconsolidated real estate ventures driven by a measurable decrease in the fair value of depreciable real estate held by the unconsolidated real estate ventures, real estate related depreciation and amortization, and after similar adjustments for unconsolidated real estate ventures. Our calculation of FFO includes gains from sale of undepreciated real estate and other assets, considered incidental to our main business, to third parties or unconsolidated real estate ventures. FFO is a non-GAAP financial measure. We believe that the use of FFO combined with the required GAAP presentations, has been beneficial in improving the understanding of operating results of REITs among the investing public and making comparisons of REITs’ operating results more meaningful. We consider FFO to be a useful measure for reviewing comparative operating and financial performance because, by excluding property impairments, gains or losses related to sales of previously depreciated operating real estate assets and real estate depreciation and amortization, FFO can help the investing public compare the operating performance of a company’s real estate between periods or as compared to other companies. Our computation of FFO may not be comparable to FFO reported by other REITs or real estate companies that do not define the term in accordance with the current NAREIT definition or that interpret the current NAREIT definition differently.

We consider net income, as defined by GAAP, to be the most comparable earnings measure to FFO. While FFO and FFO per unit are relevant and widely used measures of operating performance of REITs, FFO does not represent cash flow from operations or net income as defined by GAAP and should not be considered as alternatives to those measures in evaluating our liquidity or operating performance. We believe that to further understand our performance, FFO should be compared with our reported net income/(loss) attributable to common unit holders and considered in addition to cash flows in accordance with GAAP, as presented in our consolidated financial statements.

47

The following table presents a reconciliation of net income attributable to common shares and common unitholders to FFO for the three and nine months ended September 30, 2024 and 2023:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
	(amounts in thousands, except share information)
Net loss attributable to common unitholders	$	(165,993)	$	(21,775)	$	(152,759)	$	(40,061)
Add (deduct):
Amount allocated to unvested restricted unitholders	276		159		889		433
Net gain on real estate venture transactions	(7,929)		—		(61,662)		(181)
Provision for impairment	37,426		11,666		43,853		16,134
Company's share of impairment of an unconsolidated real estate venture	123,376		—		123,376		—
Depreciation and amortization:
Real property	38,584		40,493		116,069		118,242
Leasing costs including acquired intangibles	4,862		7,594		14,785		20,837
Company’s share of unconsolidated real estate ventures	9,636		12,840		35,782		36,549
Partners’ share of consolidated real estate ventures	(6)		(8)		(6)		(16)
Funds from operations	$	40,232	$	50,969	$	120,327	$	151,937
Funds from operations allocable to unvested restricted shareholders	(420)		(347)		(1,306)		(880)
Funds from operations available to common share and unit holders (FFO)	$	39,812	$	50,622	$	119,021	$	151,057
Weighted-average shares/units outstanding — basic (a)	173,184,325		172,614,128		172,995,920		172,429,019
Weighted-average shares/units outstanding — fully diluted (a)	175,997,959		173,236,769		175,238,507		172,954,267

(a)Includes common shares and partnership units outstanding through the three and nine months ended September 30, 2024 and 2023, respectively.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

Market risk is the exposure to loss resulting from changes in interest rates, commodity prices and equity prices. In pursuing our business plan, the primary market risk to which we are exposed is interest rate risk. Changes in the general level of interest rates prevailing in the financial markets may affect the spread between our yield on invested assets and cost of funds and, in turn, our ability to make distributions or payments to our shareholders. While we have not experienced any significant credit losses, in the event of a significant rising interest rate environment and/or continued economic slowdown, defaults could increase and result in losses to us which would adversely affect our operating results and liquidity.

Interest Rate Risk and Sensitivity Analysis

The analysis below presents the sensitivity of the market value of the Operating Partnership’s financial instruments to selected changes in market rates. The range of changes chosen reflects its view of changes which are reasonably possible over a one-year period. Market values are the present value of projected future cash flows based on the market rates chosen.

Our financial instruments consist of both fixed and variable rate debt. As of September 30, 2024, our consolidated debt consisted of (i) unsecured notes with an outstanding principal balance of $1,563.0 million, all of which are fixed rate borrowings, (ii) variable rate debt consisting of trust preferred securities that have been swapped to fixed rates with an outstanding principal balance of $78.6 million, (iii) a $600.0 million revolving credit facility with an outstanding principal balance of $40.0 million , (iv) a secured fixed rate term loan with an outstanding principal balance of $245.0 million and (v) two unsecured term loans of $250.0 million and $70.0 million. The $250.0 million unsecured term loan has been swapped to a fixed rate. All financial instruments were entered into for other than trading purposes and the net market value of these financial instruments is referred to as the net financial position. Changes in interest rates have different impacts on the fixed and variable rate portions of our debt portfolio. A change in interest rates on the fixed portion of the debt portfolio impacts the net financial instrument position, but has no impact on interest incurred or cash flows. A change in interest rates on the variable portion of the debt portfolio impacts the interest incurred and cash flows, but does not impact the net financial instrument position.

If market rates of interest increase by 100 basis points, the fair value of our outstanding secured fixed rate debt would increase by approximately $7.2 million. If market rates of interest decrease by 100 basis points, the fair value of our outstanding secured fixed rate debt would decrease by approximately $7.4 million.

48

As of September 30, 2024, based on prevailing interest rates and credit spreads, the fair value of our unsecured notes was $1,586.0 million. For sensitivity purposes, a 100-basis point change in the discount rate equates to a change in the total fair value of our debt of approximately $15.9 million at September 30, 2024.

From time to time or as the need arises, we use derivative instruments to manage interest rate risk exposures and not for speculative or trading purposes. The total outstanding principal balance of our variable rate debt was approximately $468.4 million as of September 30, 2024. The total fair value of our variable rate debt was approximately $433.9 million at September 30, 2024. For sensitivity purposes, if market rates of interest increase by 100 basis points the fair value of our variable rate debt would decrease by approximately $12.0 million at September 30, 2024. If market rates of interest decrease by 100 basis points the fair value of our outstanding variable rate debt would increase by approximately $12.7 million at September 30, 2024.

These amounts were determined solely by considering the impact of hypothetical interest rates on our financial instruments. Due to the uncertainty of specific actions we may undertake to minimize possible effects of market interest rate increases, this analysis assumes no changes in our financial structure.

49

Item 4. Controls and Procedures

Controls and Procedures (Parent Company)

(a)Evaluation of disclosure controls and procedures. Under the supervision and with the participation of its management, including its principal executive officer and principal financial officer, the Parent Company conducted an evaluation of its disclosure controls and procedures, as such term is defined under Rule 13a-15(e) promulgated under the Securities Exchange Act of 1934, as amended (the Exchange Act), as of the end of the period covered by this quarterly report. Based on this evaluation, the Parent Company’s principal executive officer and principal financial officer have concluded that the Parent Company’s disclosure controls and procedures are effective as of the end of the period covered by this quarterly report.

(b)Changes in internal control over financial reporting. There was no change in the Parent Company’s internal control over financial reporting that occurred during the period covered by this quarterly report that has materially affected, or is reasonably likely to materially affect, the Parent Company’s internal control over financial reporting.

Controls and Procedures (Operating Partnership)

(a)Evaluation of disclosure controls and procedures. Under the supervision and with the participation of its management, including its principal executive officer and principal financial officer, the Operating Partnership conducted an evaluation of its disclosure controls and procedures, as such term is defined under Rule 13a-15(e) promulgated under the Exchange Act as of the end of the period covered by this quarterly report. Based on this evaluation, the Operating Partnership’s principal executive officer and principal financial officer have concluded that the Operating Partnership’s disclosure controls and procedures are effective as of the end of the period covered by this quarterly report.

(b)Changes in internal control over financial reporting. There was no change in the Operating Partnership’s internal control over financial reporting that occurred during the period covered by this quarterly report that has materially affected, or is reasonably likely to materially affect, the Operating Partnership’s internal control over financial reporting.

50

Part II. OTHER INFORMATION

Item 1. Legal Proceedings

None.

Item 1A. Risk Factors

As of September 30, 2024, there have been no material changes to the Risk Factors disclosed in “Part I. Item 1A. Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2023 and our Quarterly Report on Form 10-Q for the quarter ended June 30, 2024.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

(a)None.

(b)Not applicable.

(c)There were no common share repurchases under the Parent Company’s share repurchase program during the fiscal quarter ended September 30, 2024. As of September 30, 2024, $82.9 million remained available for repurchases under the share repurchase program.

Item 3. Defaults Upon Senior Securities

None.

Item 4. Mine Safety Disclosures

Not applicable.

Item 5. Other Information

During the three months ended September 30, 2024, none of the Company’s trustees or officers (as defined in Rule 16a-1(f) of the Securities Exchange Act of 1934) adopted, terminated or modified a Rule 10b5-1 trading arrangement or non-Rule 10b5-1

trading arrangement (as such terms are defined in Item 408 of Regulation S-K).

51

Item 6. Exhibits

(a)	Exhibits
	Exhibits No.	Description
	31.1	Certification of the Chief Executive Officer of Brandywine Realty Trust pursuant to 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934 (filed herewith).
	31.2	Certification of the Chief Financial Officer of Brandywine Realty Trust pursuant to 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934 (filed herewith).
	31.3	Certification of the Chief Executive Officer of Brandywine Realty Trust, in its capacity as the general partner of Brandywine Operating Partnership, L.P., pursuant to 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934 (filed herewith).
	31.4	Certification of the Chief Financial Officer of Brandywine Realty Trust, in its capacity as the general partner of Brandywine Operating Partnership, L.P., pursuant to 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934 (filed herewith).
	32.1	Certification of the Chief Executive Officer of Brandywine Realty Trust pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).
	32.2	Certification of the Chief Financial Officer of Brandywine Realty Trust pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).
	32.3	Certification of the Chief Executive Officer of Brandywine Realty Trust, in its capacity as the general partner of Brandywine Operating Partnership, L.P., pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).
	32.4	Certification of the Chief Financial Officer of Brandywine Realty Trust, in its capacity as the general partner of Brandywine Operating Partnership, L.P., pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith).
	101.1	The following materials from the combined Quarterly Reports on Form 10-Q of Brandywine Realty Trust and Brandywine Operating Partnership, L.P. for the quarter ended September 30, 2024 formatted in iXBRL (Inline eXtensible Business Reporting Language): (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Operations, (iii) the Consolidated Statement of Equity, (iv) the Consolidated Statements of Cash Flows, and (v) Notes to Consolidated Financial Statements, detailed tagged and filed herewith.
	104	Cover Page Interactive Data File – the cover page interactive data file does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.

Exhibits 32.1, 32.2, 32.3 and 32.4 are being furnished and shall not be deemed to be “filed” for purposes of Section 18 of the Exchange Act or otherwise subject to the liability of that section, nor shall any of such exhibits be deemed to be incorporated by reference in any filing of Brandywine Realty Trust or Brandywine Operating Partnership, L.P. under the Securities Act of 1933, as amended, or the Exchange Act, except as otherwise stated in such filing.

52

SIGNATURES OF REGISTRANT

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		BRANDYWINE REALTY TRUST (Registrant)
Date:	November 4, 2024	By:	/s/ Gerard H. Sweeney
			Gerard H. Sweeney, President and Chief Executive Officer
			(Principal Executive Officer)
Date:	November 4, 2024	By:	/s/ Thomas E. Wirth
			Thomas E. Wirth, Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	November 4, 2024	By:	/s/ Daniel Palazzo
			Daniel Palazzo, Senior Vice President and Chief Accounting Officer
			(Principal Accounting Officer)

53

SIGNATURES OF REGISTRANT

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

		BRANDYWINE OPERATING PARTNERSHIP, L.P. (Registrant) BRANDYWINE REALTY TRUST, as general partner
Date:	November 4, 2024	By:	/s/ Gerard H. Sweeney
			Gerard H. Sweeney, President and Chief Executive Officer
			(Principal Executive Officer)
Date:	November 4, 2024	By:	/s/ Thomas E. Wirth
			Thomas E. Wirth, Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	November 4, 2024	By:	/s/ Daniel Palazzo
			Daniel Palazzo, Senior Vice President and Chief Accounting Officer
			(Principal Accounting Officer)

54

EX-31.1

Exhibit 31.1

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES

EXCHANGE ACT OF 1934, AS AMENDED

I, Gerard H. Sweeney, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Brandywine Realty Trust;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15(d)-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 4, 2024	/s/ Gerard H. Sweeney
	Gerard H. Sweeney President and Chief Executive Officer

EX-31.2

Exhibit 31.2

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES

EXCHANGE ACT OF 1934, AS AMENDED

I, Thomas E. Wirth, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Brandywine Realty Trust;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15(d)-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 4, 2024	/s/ Thomas E. Wirth
	Thomas E. Wirth Executive Vice President and Chief Financial Officer

EX-31.3

Exhibit 31.3

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES

EXCHANGE ACT OF 1934, AS AMENDED

I, Gerard H. Sweeney, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Brandywine Operating Partnership, L.P.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15(d)-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 4, 2024	/s/ Gerard H. Sweeney
	Gerard H. Sweeney
	President and Chief Executive Officer

EX-31.4

Exhibit 31.4

CERTIFICATION PURSUANT TO

RULES 13a-14(a) AND 15d-14(a) UNDER THE SECURITIES

EXCHANGE ACT OF 1934, AS AMENDED

I, Thomas E. Wirth, certify that:

1.I have reviewed this quarterly report on Form 10-Q of Brandywine Operating Partnership, L.P.;

2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3.Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4.The registrant's other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15(d)-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a.Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b.Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c.Evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

d.Disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5.The registrant's other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a.All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b.Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.

Date: November 4, 2024	/s/ Thomas E. Wirth
	Thomas E. Wirth
	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

RULE 13(a)-14(b) CERTIFICATION

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002*

In connection with the Quarterly Report of Brandywine Realty Trust (the “Company”) on Form 10-Q for the quarter ended September 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gerard H. Sweeney, President and Chief Executive Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Gerard H. Sweeney

Gerard H. Sweeney
President and Chief Executive Officer

Date: November 4, 2024

* A signed original of this written statement required by Section 906 has been provided to Brandywine Realty Trust and will be retained by Brandywine Realty Trust and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.2

Exhibit 32.2

RULE 13(a)-14(b) CERTIFICATION

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002*

In connection with the Quarterly Report of Brandywine Realty Trust (the “Company”) on Form 10-Q for the quarter ended September 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Thomas E. Wirth, Executive Vice President and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Thomas E. Wirth

Thomas E. Wirth
Executive Vice President and Chief Financial Officer

Date: November 4, 2024

* A signed original of this written statement required by Section 906 has been provided to Brandywine Realty Trust and will be retained by Brandywine Realty Trust and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.3

Exhibit 32.3

RULE 13(a)-14(b) CERTIFICATION

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002*

In connection with the Quarterly Report of Brandywine Operating Partnership, L.P. (the “Partnership”) on Form 10-Q for the quarter ended September 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Gerard H. Sweeney, President and Chief Executive Officer of Brandywine Realty Trust, the Partnership's sole general partner, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Gerard H. Sweeney

Gerard H. Sweeney

President and Chief Executive Officer

Date: November 4, 2024

* A signed original of this written statement required by Section 906 has been provided to Brandywine Realty Trust and will be retained by Brandywine Realty Trust and furnished to the Securities and Exchange Commission or its staff upon request.

EX-32.4

Exhibit 32.4

RULE 13(a)-14(b) CERTIFICATION

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002*

In connection with the Quarterly Report of Brandywine Operating Partnership, L.P. (the “Partnership”) on Form 10-Q for the quarter ended September 30, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Thomas E. Wirth, Executive Vice President and Chief Financial Officer of Brandywine Realty Trust, the Partnership's sole general partner, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

1.The Report fully complies with the requirements of Section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and

2.The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ Thomas E. Wirth

Thomas E. Wirth

Executive Vice President and Chief Financial Officer

Date: November 4, 2024

* A signed original of this written statement required by Section 906 has been provided to Brandywine Realty Trust and will be retained by Brandywine Realty Trust and furnished to the Securities and Exchange Commission or its staff upon request.

XML

COVER PAGE - shares	9 Months Ended
	Sep. 30, 2024	Oct. 31, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2024
Document Transition Report	false
Entity Registrant Name	Brandywine Realty Trust
Entity Incorporation, State or Country Code	MD
Entity File Number	001-9106
Entity Tax Identification Number	23-2413352
Entity Address, Address Line One	2929 Arch Street
Entity Address, Address Line Two	Suite 1800
Entity Address, City or Town	Philadelphia
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19104
City Area Code	610
Local Phone Number	325-5600
Title of 12(b) Security	Common Shares of Beneficial Interest
Trading Symbol	BDN
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		172,666,038
Entity Central Index Key	0000790816
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q3
Amendment Flag	false
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Document Information [Line Items]
Entity Registrant Name	Brandywine Operating Partnership, L.P.
Entity Incorporation, State or Country Code	DE
Entity File Number	000-24407
Entity Tax Identification Number	23-2862640
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001060386

XML

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Real estate investments:
Operating properties	$ 3,409,605	$ 3,542,232
Accumulated depreciation	(1,156,992)	(1,131,792)
Right of use asset - operating leases, net	18,565	19,031
Operating real estate investments, net	2,271,178	2,429,471
Construction-in-progress	166,278	135,529
Land held for development	78,259	82,510
Prepaid leasehold interests in land held for development, net	27,762	27,762
Total real estate investments, net	2,543,477	2,675,272
Cash and cash equivalents	36,498	58,319
Restricted cash and escrows	6,195	9,215
Accounts receivable	8,669	11,977
Accrued rent receivable, net of allowance of $1,332 and $2,672 as of September 30, 2024 and December 31, 2023, respectively	187,873	186,708
Investment in unconsolidated real estate ventures	602,700	601,227
Deferred costs, net	86,390	95,984
Intangible assets, net	6,249	7,694
Other assets	121,509	86,051
Total assets	3,599,560	3,732,447
LIABILITIES AND BENEFICIARIES' EQUITY
Secured debt, net	272,181	255,671
Unsecured credit facility	40,000	0
Unsecured term loans, net	331,797	318,499
Unsecured senior notes, net	1,617,795	1,564,662
Accounts payable and accrued expenses	137,406	123,825
Distributions payable	26,230	26,017
Deferred income, gains and rent	21,453	24,248
Intangible liabilities, net	7,558	8,270
Lease liability - operating leases	23,502	23,369
Other liabilities	16,908	63,729
Total liabilities	2,494,830	2,408,290
Commitments and contingencies (See Note 14)
Brandywine Realty Trust's Equity:
Common Shares of Brandywine Realty Trust's beneficial interest, $0.01 par value; shares authorized 400,000,000; 172,665,995 and 172,097,661 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	1,724	1,719
Additional paid-in-capital	3,178,214	3,163,949
Deferred compensation payable in common shares	20,456	19,965
Common shares in grantor trust, 1,221,333 and 1,194,127 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	(20,456)	(19,965)
Cumulative earnings	827,991	979,406
Accumulated other comprehensive loss	(3,773)	(668)
Cumulative distributions	(2,905,554)	(2,827,022)
Total Brandywine Realty Trust's equity	1,098,602	1,317,384
Noncontrolling interests	6,128	6,773
Total beneficiaries' equity	1,104,730	1,324,157
Total liabilities and beneficiaries' equity	$ 3,599,560	$ 3,732,447

XML

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Accrued rent receivable, allowance	$ 1,332	$ 2,672
Common stock, par or stated value per share (in usd per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	172,665,995	172,097,661
Common stock, shares outstanding (in shares)	172,665,995	172,097,661
Common shares in grantor trust, issued and outstanding (in shares)	1,221,333	1,194,127

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue
Total revenue	$ 131,782			$ 129,372			$ 383,612	$ 384,481
Operating expenses
Property operating expenses	31,900			31,123			95,532	96,608
Real estate taxes	11,892			12,808			37,019	38,981
Third party management expenses	2,487			2,468			7,456	7,664
Depreciation and amortization	44,301			48,966			133,530	141,645
General and administrative expenses	12,681			8,069			32,726	26,911
Provision for impairment	37,980			11,666			44,407	16,134
Total operating expenses	141,241			115,100			350,670	327,943
Gain on sale of real estate
Net gain on sale of undepreciated real estate	0			0			0	781
Total gain on sale of real estate	0			0			0	781
Operating income (loss)	(9,459)			14,272			32,942	57,319
Other income (expense):
Interest and investment income	639			293			2,572	1,318
Interest expense	(30,561)			(24,355)			(85,104)	(70,677)
Interest expense - amortization of deferred financing costs	(1,247)			(1,110)			(3,753)	(3,251)
Equity in loss of unconsolidated real estate ventures	(125,862)			(10,739)			(153,957)	(24,504)
Net gain on real estate venture transactions	770			0			54,503	181
Gain on early extinguishment of debt	0			0			941	0
Net loss before income taxes	(165,720)			(21,639)			(151,856)	(39,614)
Income tax benefit (provision)	0			3			(11)	(35)
Net loss	(165,720)	$ 30,267	$ (16,414)	(21,636)	$ (12,737)	$ (5,276)	(151,867)	(39,649)
Net loss attributable to noncontrolling interests	500			82			452	140
Net loss attributable to Brandywine Realty Trust	(165,220)			(21,554)			(151,415)	(39,509)
Nonforfeitable dividends allocated to unvested restricted shareholders	(276)			(159)			(889)	(433)
Net loss attributable to common shareholders, basic	$ (165,496)			$ (21,713)			$ (152,304)	$ (39,942)
Basic loss per Common Share (in dollars per share)	$ (0.96)			$ (0.13)			$ (0.88)	$ (0.23)
Diluted loss per Common Share (in dollars per share)	$ (0.96)			$ (0.13)			$ (0.88)	$ (0.23)
Basic weighted average shares outstanding (in shares)	172,668,731			172,097,661			172,480,325	171,912,552
Diluted weighted average shares outstanding (in shares)	172,668,731			172,097,661			172,480,325	171,912,552
Rents
Revenue
Total revenue	$ 117,958			$ 121,661			$ 354,975	$ 360,642
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	6,093			6,553			17,685	18,782
Other
Revenue
Total revenue	$ 7,731			$ 1,158			$ 10,952	$ 5,057

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (165,720)	$ 30,267	$ (16,414)	$ (21,636)	$ (12,737)	$ (5,276)	$ (151,867)	$ (39,649)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	(9,919)			2,885			(3,112)	4,240
Total comprehensive income (loss)	(9,919)	$ 781	$ 6,026	2,885	$ 6,646	$ (5,291)	(3,112)	4,240
Comprehensive loss	(175,639)			(18,751)			(154,979)	(35,409)
Comprehensive loss attributable to noncontrolling interest	529			106			459	128
Comprehensive loss attributable to Brandywine Realty Trust	$ (175,110)			$ (18,645)			$ (154,520)	$ (35,281)

XML

CONSOLIDATED STATEMENTS OF BENEFICIARIES’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Rabbi Trust/Deferred Compensation Shares	Additional Paid-in Capital	Common Shares in Grantor Trust	Cumulative Earnings	Accumulated Other Comprehensive Income (Loss)	Cumulative Distributions	Noncontrolling Interests
Beginning balance (in shares) at Dec. 31, 2022		171,569,807	1,179,643
Beginning balance at Dec. 31, 2022	$ 1,633,334	$ 1,716	$ 19,601	$ 3,153,229	$ (19,601)	$ 1,176,195	$ 3,897	$ (2,709,405)	$ 7,702
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(5,276)					(5,259)			(17)
Other comprehensive income (loss)	(5,291)						(5,307)		16
Share-based compensation activity (in shares)		171,318	22,449
Share-based compensation activity	3,371	$ 1		3,370
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(13,422)	(48,733)
Share Issuance from/(to) Deferred Compensation Plan	(88)		$ 145	(88)	(145)
Reallocation of Noncontrolling interest	0			(4)					4
Distributions declared	(32,832)							(32,734)	(98)
Ending balance (in shares) at Mar. 31, 2023		171,727,703	1,153,359
Ending balance at Mar. 31, 2023	1,593,218	$ 1,717	$ 19,746	3,156,507	(19,746)	1,170,936	(1,410)	(2,742,139)	7,607
Beginning balance (in shares) at Dec. 31, 2022		171,569,807	1,179,643
Beginning balance at Dec. 31, 2022	1,633,334	$ 1,716	$ 19,601	3,153,229	(19,601)	1,176,195	3,897	(2,709,405)	7,702
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(39,649)
Other comprehensive income (loss)	4,240
Ending balance (in shares) at Sep. 30, 2023		172,097,661	1,194,127
Ending balance at Sep. 30, 2023	1,514,368	$ 1,719	$ 19,965	3,161,568	(19,965)	1,136,686	8,125	(2,801,074)	7,344
Beginning balance (in shares) at Mar. 31, 2023		171,727,703	1,153,359
Beginning balance at Mar. 31, 2023	1,593,218	$ 1,717	$ 19,746	3,156,507	(19,746)	1,170,936	(1,410)	(2,742,139)	7,607
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(12,737)					(12,696)			(41)
Other comprehensive income (loss)	6,646						6,626		20
Share-based compensation activity (in shares)		374,226	54,056
Share-based compensation activity	2,616	$ 2		2,614
Share Issuance from/(to) Deferred Compensation Plan	0		$ 219		(219)
Reallocation of Noncontrolling interest	0			155					(155)
Distributions declared	(33,083)							(32,985)	(98)
Ending balance (in shares) at Jun. 30, 2023		172,101,929	1,207,415
Ending balance at Jun. 30, 2023	1,556,660	$ 1,719	$ 19,965	3,159,276	(19,965)	1,158,240	5,216	(2,775,124)	7,333
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(21,636)					(21,554)			(82)
Other comprehensive income (loss)	2,885						2,909		(24)
Share-based compensation activity (in shares)
Share-based compensation activity	2,506			2,506
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(4,268)	(13,288)
Share Issuance from/(to) Deferred Compensation Plan	(20)			(20)
Reallocation of Noncontrolling interest	0			(194)					194
Distributions declared	(26,027)							(25,950)	(77)
Ending balance (in shares) at Sep. 30, 2023		172,097,661	1,194,127
Ending balance at Sep. 30, 2023	$ 1,514,368	$ 1,719	$ 19,965	3,161,568	(19,965)	1,136,686	8,125	(2,801,074)	7,344
Beginning balance (in shares) at Dec. 31, 2023	172,097,661	172,097,661	1,194,127
Beginning balance at Dec. 31, 2023	$ 1,324,157	$ 1,719	$ 19,965	3,163,949	(19,965)	979,406	(668)	(2,827,022)	6,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(16,414)					(16,368)			(46)
Other comprehensive income (loss)	6,026						6,007		19
Share-based compensation activity (in shares)		194,480	7,148
Share-based compensation activity	4,831	$ 2		4,829
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(21,234)	(56,154)
Share Issuance from/(to) Deferred Compensation Plan	(100)		$ 31	(100)	(31)
Reallocation of Noncontrolling interest	0			(17)					17
Distributions declared	(26,254)							(26,177)	(77)
Ending balance (in shares) at Mar. 31, 2024		172,270,907	1,145,121
Ending balance at Mar. 31, 2024	$ 1,292,246	$ 1,721	$ 19,996	3,168,661	(19,996)	963,038	5,339	(2,853,199)	6,686
Beginning balance (in shares) at Dec. 31, 2023	172,097,661	172,097,661	1,194,127
Beginning balance at Dec. 31, 2023	$ 1,324,157	$ 1,719	$ 19,965	3,163,949	(19,965)	979,406	(668)	(2,827,022)	6,773
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(151,867)
Other comprehensive income (loss)	$ (3,112)
Ending balance (in shares) at Sep. 30, 2024	172,665,995	172,665,995	1,221,333
Ending balance at Sep. 30, 2024	$ 1,104,730	$ 1,724	$ 20,456	3,178,214	(20,456)	827,991	(3,773)	(2,905,554)	6,128
Beginning balance (in shares) at Mar. 31, 2024		172,270,907	1,145,121
Beginning balance at Mar. 31, 2024	1,292,246	$ 1,721	$ 19,996	3,168,661	(19,996)	963,038	5,339	(2,853,199)	6,686
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	30,267					30,173			94
Other comprehensive income (loss)	781						778		3
Share-based compensation activity (in shares)		407,226	107,389
Share-based compensation activity	2,359	$ 3		2,356
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(43)	(43)
Share Issuance from/(to) Deferred Compensation Plan	0		$ 460		(460)
Reallocation of Noncontrolling interest	0			(6)					6
Distributions declared	(26,256)							(26,179)	(77)
Ending balance (in shares) at Jun. 30, 2024		172,678,090	1,252,467
Ending balance at Jun. 30, 2024	1,299,397	$ 1,724	$ 20,456	3,171,011	(20,456)	993,211	6,117	(2,879,378)	6,712
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(165,720)					(165,220)			(500)
Other comprehensive income (loss)	(9,919)						(9,890)		(29)
Share-based compensation activity (in shares)
Share-based compensation activity	7,284			7,284
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(12,095)	(31,134)
Share Issuance from/(to) Deferred Compensation Plan	(59)			(59)
Reallocation of Noncontrolling interest	0			(22)					22
Distributions declared	$ (26,253)							(26,176)	(77)
Ending balance (in shares) at Sep. 30, 2024	172,665,995	172,665,995	1,221,333
Ending balance at Sep. 30, 2024	$ 1,104,730	$ 1,724	$ 20,456	$ 3,178,214	$ (20,456)	$ 827,991	$ (3,773)	$ (2,905,554)	$ 6,128

XML

CONSOLIDATED STATEMENTS OF BENEFICIARIES’ EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Statement of Stockholders' Equity [Abstract]
Distributions declared (in dollars per share)	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.19	$ 0.19

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net loss	$ (151,867)	$ (39,649)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	133,530	141,645
Amortization of deferred financing costs	3,753	3,251
Amortization of debt discount/(premium), net	(2,540)	(774)
Amortization of stock compensation costs	13,068	8,305
Straight-line rent income	(5,745)	(6,612)
Amortization of acquired above (below) market leases, net	(706)	(993)
Ground rent expense	589	601
Net gain on real estate venture transactions	(54,503)	(181)
Total gain on sale of real estate	0	(781)
Gain on early extinguishment of debt	(941)	0
Provision for impairment	44,407	16,134
Loss from unconsolidated real estate ventures, including income distributions	153,957	24,504
Income tax provision	11	35
Changes in assets and liabilities:
Accounts receivable	1,787	(2,362)
Other assets	(14,343)	(24,619)
Accounts payable and accrued expenses	4,851	(8,992)
Deferred income, gains and rent	(1,740)	(1,196)
Other liabilities	634	3,089
Net cash provided by operating activities	124,202	111,405
Cash flows from investing activities:
Proceeds from the sale of properties	45,250	51,285
Capital expenditures for tenant improvements	(55,214)	(34,219)
Capital expenditures for redevelopments	(8,747)	(42,592)
Capital expenditures for developments	(29,580)	(30,149)
Advances for the purchase of tenant assets, net of repayments	1,377	(9,292)
Investment in unconsolidated real estate ventures	(143,751)	(72,715)
Deposits for real estate	0	3,500
Capital distributions from unconsolidated real estate ventures	3,941	2,700
Leasing costs paid	(6,307)	(7,969)
Net cash used in investing activities	(193,031)	(139,451)
Cash flows from financing activities:
Proceeds from credit facility borrowings	131,000	172,000
Repayments of credit facility borrowings	(91,000)	(260,500)
Proceeds from unsecured notes	400,000	0
Repayments of unsecured notes	(339,059)	(54,301)
Proceeds from unsecured term loan	13,000	70,000
Proceeds from secured term loan	0	245,000
Proceeds from construction loan	15,943	0
Debt financing costs paid	(6,334)	(4,371)
Shares used for employee taxes upon vesting of share awards	(1,028)	(952)
Distributions paid to shareholders	(78,303)	(98,306)
Distributions to noncontrolling interest	(231)	(294)
Net cash provided by financing activities	43,988	68,276
Increase/(Decrease) in cash and cash equivalents and restricted cash	(24,841)	40,230
Cash and cash equivalents and restricted cash at beginning of period	67,534	18,387
Cash and cash equivalents and restricted cash at end of period	42,693	58,617
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	58,319	17,551
Restricted cash, beginning of period	9,215	836
Cash and cash equivalents and restricted cash at beginning of period	67,534	18,387
Cash and cash equivalents, end of period	36,498	47,872
Restricted cash, end of period	6,195	10,745
Cash and cash equivalents and restricted cash at end of period	42,693	58,617
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2024 and 2023 of $13,866 and $12,602, respectively	86,398	73,217
Cash paid for income taxes	0	550
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	26,230	26,027
Change in investment in real estate ventures as a result of deconsolidation	0	8,595
Change in operating real estate from deconsolidation of operating properties	0	(7,814)
Change in notes receivable from sale of properties	19,919	0
Change in capital expenditures financed through accounts payable at period end	8,383	4,276
Change in capital expenditures financed through retention payable at period end	$ (2,331)	$ 2,587

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Statement of Cash Flows [Abstract]
Capitalized interest	$ 13,866	$ 12,602

XML

CONSOLIDATED BALANCE SHEETS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Real estate investments:
Operating properties	$ 3,409,605	$ 3,542,232
Accumulated depreciation	(1,156,992)	(1,131,792)
Right of use asset - operating leases, net	18,565	19,031
Operating real estate investments, net	2,271,178	2,429,471
Construction-in-progress	166,278	135,529
Land held for development	78,259	82,510
Prepaid leasehold interests in land held for development, net	27,762	27,762
Total real estate investments, net	2,543,477	2,675,272
Cash and cash equivalents	36,498	58,319
Restricted cash and escrows	6,195	9,215
Accounts receivable	8,669	11,977
Accrued rent receivable, net of allowance of $1,332 and $2,672 as of September 30, 2024 and December 31, 2023, respectively	187,873	186,708
Investment in unconsolidated real estate ventures	602,700	601,227
Deferred costs, net	86,390	95,984
Intangible assets, net	6,249	7,694
Other assets	121,509	86,051
Total assets	3,599,560	3,732,447
LIABILITIES AND PARTNERS' EQUITY
Secured debt, net	272,181	255,671
Unsecured credit facility	40,000	0
Unsecured term loans, net	331,797	318,499
Unsecured senior notes, net	1,617,795	1,564,662
Accounts payable and accrued expenses	137,406	123,825
Distributions payable	26,230	26,017
Deferred income, gains and rent	21,453	24,248
Intangible liabilities, net	7,558	8,270
Lease liability - operating leases	23,502	23,369
Other liabilities	16,908	63,729
Total liabilities	2,494,830	2,408,290
Commitments and contingencies (See Note 14)
Brandywine Operating Partnership, L.P.'s equity:
Accumulated other comprehensive loss	(3,773)	(668)
Total liabilities and beneficiaries' equity	3,599,560	3,732,447
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Real estate investments:
Operating properties	3,409,605	3,542,232
Accumulated depreciation	(1,156,992)	(1,131,792)
Right of use asset - operating leases, net	18,565	19,031
Operating real estate investments, net	2,271,178	2,429,471
Construction-in-progress	166,278	135,529
Land held for development	78,259	82,510
Prepaid leasehold interests in land held for development, net	27,762	27,762
Total real estate investments, net	2,543,477	2,675,272
Cash and cash equivalents	36,498	58,319
Restricted cash and escrows	6,195	9,215
Accounts receivable	8,669	11,977
Accrued rent receivable, net of allowance of $1,332 and $2,672 as of September 30, 2024 and December 31, 2023, respectively	187,873	186,708
Investment in unconsolidated real estate ventures	602,700	601,227
Deferred costs, net	86,390	95,984
Intangible assets, net	6,249	7,694
Other assets	121,509	86,051
Total assets	3,599,560	3,732,447
LIABILITIES AND PARTNERS' EQUITY
Secured debt, net	272,181	255,671
Unsecured credit facility	40,000	0
Unsecured term loans, net	331,797	318,499
Unsecured senior notes, net	1,617,795	1,564,662
Accounts payable and accrued expenses	137,406	123,825
Distributions payable	26,230	26,017
Deferred income, gains and rent	21,453	24,248
Intangible liabilities, net	7,558	8,270
Lease liability - operating leases	23,502	23,369
Other liabilities	16,908	63,729
Total liabilities	2,494,830	2,408,290
Commitments and contingencies (See Note 14)
Redeemable limited partnership units at redemption value; 515,595 and 515,595 issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	2,773	2,785
Brandywine Operating Partnership, L.P.'s equity:
General Partnership Capital; 172,665,995 and 172,097,661 units issued and outstanding as of September 30, 2024 and December 31, 2023, respectively	1,103,266	1,319,572
Accumulated other comprehensive loss	(4,122)	(1,010)
Total Brandywine Operating Partnership, L.P.'s equity	1,099,144	1,318,562
Noncontrolling interest - consolidated real estate ventures	2,813	2,810
Total partners' equity	1,101,957	1,321,372
Total liabilities and beneficiaries' equity	$ 3,599,560	$ 3,732,447

XML

CONSOLIDATED BALANCE SHEETS - BRANDYWINE OPERATING PARTNERSHIP, L.P. (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accrued rent receivable, allowance	$ 1,332	$ 2,672
Common stock, shares issued (in shares)	172,665,995	172,097,661
Common stock, shares outstanding (in shares)	172,665,995	172,097,661
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Accrued rent receivable, allowance	$ 1,332	$ 2,672
Common stock, shares issued (in shares)	172,665,995	172,097,661
Common stock, shares outstanding (in shares)	172,665,995	172,097,661
BRANDYWINE OPERATING PARTNERSHIP, L.P. | Class A Units
Redeemable limited partnership units issued (in shares)	515,595	515,595
Redeemable limited partnership units outstanding (in shares)	515,595	515,595

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Revenue
Total revenue	$ 131,782	$ 129,372	$ 383,612	$ 384,481
Operating expenses
Property operating expenses	31,900	31,123	95,532	96,608
Real estate taxes	11,892	12,808	37,019	38,981
Third party management expenses	2,487	2,468	7,456	7,664
Depreciation and amortization	44,301	48,966	133,530	141,645
General and administrative expenses	12,681	8,069	32,726	26,911
Provision for impairment	37,980	11,666	44,407	16,134
Total operating expenses	141,241	115,100	350,670	327,943
Gain on sale of real estate
Net gain on sale of undepreciated real estate	0	0	0	781
Total gain on sale of real estate	0	0	0	781
Operating income (loss)	(9,459)	14,272	32,942	57,319
Other income (expense):
Interest and investment income	639	293	2,572	1,318
Interest expense	(30,561)	(24,355)	(85,104)	(70,677)
Interest expense - amortization of deferred financing costs	(1,247)	(1,110)	(3,753)	(3,251)
Equity in loss of unconsolidated real estate ventures	(125,862)	(10,739)	(153,957)	(24,504)
Net gain on real estate venture transactions	770	0	54,503	181
Gain on early extinguishment of debt	0	0	941	0
Net loss before income taxes	(165,720)	(21,639)	(151,856)	(39,614)
Income tax benefit (provision)	0	3	(11)	(35)
Net loss	(165,720)	(21,636)	(151,867)	(39,649)
Nonforfeitable dividends allocated to unvested restricted unitholders	(276)	(159)	(889)	(433)
Net loss attributable to Common Shareholders of Brandywine Realty Trust	$ (165,496)	$ (21,713)	$ (152,304)	$ (39,942)
Basic loss per Common Partnership Unit (in dollars per share)	$ (0.96)	$ (0.13)	$ (0.88)	$ (0.23)
Diluted loss per Common Partnership Unit (in dollars per share)	$ (0.96)	$ (0.13)	$ (0.88)	$ (0.23)
Basic weighted average common partnership units outstanding (in shares)	172,668,731	172,097,661	172,480,325	171,912,552
Diluted weighted average common partnership units outstanding (in shares)	172,668,731	172,097,661	172,480,325	171,912,552
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	$ 131,782	$ 129,372	$ 383,612	$ 384,481
Operating expenses
Property operating expenses	31,900	31,123	95,532	96,608
Real estate taxes	11,892	12,808	37,019	38,981
Third party management expenses	2,487	2,468	7,456	7,664
Depreciation and amortization	44,301	48,966	133,530	141,645
General and administrative expenses	12,681	8,069	32,726	26,911
Provision for impairment	37,980	11,666	44,407	16,134
Total operating expenses	141,241	115,100	350,670	327,943
Gain on sale of real estate
Net gain on sale of undepreciated real estate	0	0	0	781
Total gain on sale of real estate	0	0	0	781
Operating income (loss)	(9,459)	14,272	32,942	57,319
Other income (expense):
Interest and investment income	639	293	2,572	1,318
Interest expense	(30,561)	(24,355)	(85,104)	(70,677)
Interest expense - amortization of deferred financing costs	(1,247)	(1,110)	(3,753)	(3,251)
Equity in loss of unconsolidated real estate ventures	(125,862)	(10,739)	(153,957)	(24,504)
Net gain on real estate venture transactions	770	0	54,503	181
Gain on early extinguishment of debt	0	0	941	0
Net loss before income taxes	(165,720)	(21,639)	(151,856)	(39,614)
Income tax benefit (provision)	0	3	(11)	(35)
Net loss	(165,720)	(21,636)	(151,867)	(39,649)
Net (income) loss attributable to noncontrolling interests - consolidated real estate ventures	3	20	(3)	21
Net loss attributable to Brandywine Operating Partnership, L.P.	(165,717)	(21,616)	(151,870)	(39,628)
Nonforfeitable dividends allocated to unvested restricted unitholders	(276)	(159)	(889)	(433)
Net loss attributable to Common Shareholders of Brandywine Realty Trust	$ (165,993)	$ (21,775)	$ (152,759)	$ (40,061)
Basic loss per Common Partnership Unit (in dollars per share)	$ (0.96)	$ (0.13)	$ (0.88)	$ (0.23)
Diluted loss per Common Partnership Unit (in dollars per share)	$ (0.96)	$ (0.13)	$ (0.88)	$ (0.23)
Basic weighted average common partnership units outstanding (in shares)	173,184,325	172,614,128	172,995,920	172,429,019
Diluted weighted average common partnership units outstanding (in shares)	173,184,325	172,614,128	172,995,920	172,429,019
Rents
Revenue
Total revenue	$ 117,958	$ 121,661	$ 354,975	$ 360,642
Rents | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	117,958	121,661	354,975	360,642
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	6,093	6,553	17,685	18,782
Third party management fees, labor reimbursement and leasing | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	6,093	6,553	17,685	18,782
Other
Revenue
Total revenue	7,731	1,158	10,952	5,057
Other | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	$ 7,731	$ 1,158	$ 10,952	$ 5,057

XML

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Net loss	$ (165,720)	$ (21,636)	$ (151,867)	$ (39,649)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	(9,919)	2,885	(3,112)	4,240
Total comprehensive income (loss)	(9,919)	2,885	(3,112)	4,240
Comprehensive loss	(175,639)	(18,751)	(154,979)	(35,409)
Comprehensive (income) loss attributable to noncontrolling interest - consolidated real estate ventures	529	106	459	128
Comprehensive loss attributable to Brandywine Realty Trust	(175,110)	(18,645)	(154,520)	(35,281)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net loss	(165,720)	(21,636)	(151,867)	(39,649)
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	(9,919)	2,885	(3,112)	4,240
Total comprehensive income (loss)	(9,919)	2,885	(3,112)	4,240
Comprehensive loss	(175,639)	(18,751)	(154,979)	(35,409)
Comprehensive (income) loss attributable to noncontrolling interest - consolidated real estate ventures	3	20	(3)	21
Comprehensive loss attributable to Brandywine Realty Trust	$ (175,636)	$ (18,731)	$ (154,982)	$ (35,388)

XML

CONSOLIDATED STATEMENTS OF PARTNERS’ EQUITY - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	Total	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interest - Consolidated Real Estate Ventures	BRANDYWINE OPERATING PARTNERSHIP, L.P.	BRANDYWINE OPERATING PARTNERSHIP, L.P. Accumulated Other Comprehensive Income (Loss)	BRANDYWINE OPERATING PARTNERSHIP, L.P. Noncontrolling Interest - Consolidated Real Estate Ventures	BRANDYWINE OPERATING PARTNERSHIP, L.P. General Partner Capital
Beginning balance (in shares) at Dec. 31, 2022							171,569,807
Beginning balance at Dec. 31, 2022				$ 1,630,139	$ 3,569	$ 2,832	$ 1,623,738
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	$ (5,276)		$ (17)	(5,276)		(1)	$ (5,275)
Other comprehensive income (loss)	(5,291)	$ (5,307)	16	(5,291)	(5,291)
Deferred compensation obligation (in shares)							(13,422)
Deferred compensation obligation	(88)			(88)			$ (88)
Repurchase and retirement of LP units				0
Share-based compensation activity (in shares)							171,318
Share-based compensation activity	3,371			3,371			$ 3,371
Adjustment of redeemable partnership units to liquidation value at period end				779			779
Distributions declared to general partnership unit holders				(32,734)			$ (32,734)
Ending balance (in shares) at Mar. 31, 2023							171,727,703
Ending balance at Mar. 31, 2023				1,590,900	(1,722)	2,831	$ 1,589,791
Beginning balance (in shares) at Dec. 31, 2022							171,569,807
Beginning balance at Dec. 31, 2022				1,630,139	3,569	2,832	$ 1,623,738
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	(39,649)			(39,649)
Other comprehensive income (loss)	4,240			4,240
Ending balance (in shares) at Sep. 30, 2023							172,097,661
Ending balance at Sep. 30, 2023				1,512,086	7,809	2,811	$ 1,501,466
Beginning balance (in shares) at Mar. 31, 2023							171,727,703
Beginning balance at Mar. 31, 2023				1,590,900	(1,722)	2,831	$ 1,589,791
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	(12,737)		(41)	(12,737)			$ (12,737)
Other comprehensive income (loss)	6,646	6,626	20	6,646	6,646
Deferred compensation obligation	0
Share-based compensation activity (in shares)							374,226
Share-based compensation activity	2,616			2,616			$ 2,616
Adjustment of redeemable partnership units to liquidation value at period end				(98)			(98)
Distributions declared to general partnership unit holders				(32,985)			$ (32,985)
Ending balance (in shares) at Jun. 30, 2023							172,101,929
Ending balance at Jun. 30, 2023				1,554,342	4,924	2,831	$ 1,546,587
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	(21,636)		(82)	(21,636)		(20)	$ (21,616)
Other comprehensive income (loss)	2,885	2,909	(24)	2,885	2,885
Deferred compensation obligation (in shares)							(4,268)
Deferred compensation obligation	(20)			(20)			$ (20)
Share-based compensation activity	2,506			2,506			2,506
Adjustment of redeemable partnership units to liquidation value at period end				(41)			(41)
Distributions declared to general partnership unit holders				(25,950)			$ (25,950)
Ending balance (in shares) at Sep. 30, 2023							172,097,661
Ending balance at Sep. 30, 2023				1,512,086	7,809	2,811	$ 1,501,466
Beginning balance (in shares) at Dec. 31, 2023							172,097,661
Beginning balance at Dec. 31, 2023				1,321,372	(1,010)	2,810	$ 1,319,572
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	(16,414)		(46)	(16,414)		3	$ (16,417)
Other comprehensive income (loss)	6,026	6,007	19	6,026	6,026
Deferred compensation obligation (in shares)							(21,234)
Deferred compensation obligation	(100)			(100)			$ (100)
Share-based compensation activity (in shares)							194,480
Share-based compensation activity	4,831			4,831			$ 4,831
Adjustment of redeemable partnership units to liquidation value at period end				316			316
Distributions declared to general partnership unit holders				(26,177)			$ (26,177)
Ending balance (in shares) at Mar. 31, 2024							172,270,907
Ending balance at Mar. 31, 2024				1,289,854	5,016	2,813	$ 1,282,025
Beginning balance (in shares) at Dec. 31, 2023							172,097,661
Beginning balance at Dec. 31, 2023				1,321,372	(1,010)	2,810	$ 1,319,572
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	(151,867)			(151,867)
Other comprehensive income (loss)	(3,112)			(3,112)
Ending balance (in shares) at Sep. 30, 2024							172,665,995
Ending balance at Sep. 30, 2024				1,101,957	(4,122)	2,813	$ 1,103,266
Beginning balance (in shares) at Mar. 31, 2024							172,270,907
Beginning balance at Mar. 31, 2024				1,289,854	5,016	2,813	$ 1,282,025
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	30,267		94	30,267		3	$ 30,264
Other comprehensive income (loss)	781	778	3	781	781
Deferred compensation obligation (in shares)							(43)
Deferred compensation obligation	0
Share-based compensation activity (in shares)							407,226
Share-based compensation activity	2,359			2,359			$ 2,359
Adjustment of redeemable partnership units to liquidation value at period end				16			16
Distributions declared to general partnership unit holders				(26,179)			$ (26,179)
Ending balance (in shares) at Jun. 30, 2024							172,678,090
Ending balance at Jun. 30, 2024				1,297,098	5,797	2,816	$ 1,288,485
Increase (Decrease) in Partners' Capital [Roll Forward]
Net (loss) income	(165,720)		(500)	(165,720)		(3)	$ (165,717)
Other comprehensive income (loss)	(9,919)	$ (9,890)	$ (29)	(9,919)	(9,919)
Deferred compensation obligation (in shares)							(12,095)
Deferred compensation obligation	(59)			(59)			$ (59)
Share-based compensation activity	$ 7,284			7,284			7,284
Adjustment of redeemable partnership units to liquidation value at period end				(551)			(551)
Distributions declared to general partnership unit holders				(26,176)			$ (26,176)
Ending balance (in shares) at Sep. 30, 2024							172,665,995
Ending balance at Sep. 30, 2024				$ 1,101,957	$ (4,122)	$ 2,813	$ 1,103,266

XML

CONSOLIDATED STATEMENTS OF PARTNERS’ EQUITY - BRANDYWINE OPERATING PARTNERSHIP, L.P. (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
BRANDYWINE OPERATING PARTNERSHIP, L.P. | General Partner Capital
Distributions to general partnership unitholders (in dollars per share)	$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.19	$ 0.19

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - BRANDYWINE OPERATING PARTNERSHIP L.P. - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net loss	$ (151,867)	$ (39,649)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	133,530	141,645
Amortization of deferred financing costs	3,753	3,251
Amortization of debt discount/(premium), net	(2,540)	(774)
Amortization of stock compensation costs	13,068	8,305
Straight-line rent income	(5,745)	(6,612)
Amortization of acquired above (below) market leases, net	(706)	(993)
Ground rent expense	589	601
Net gain on real estate venture transactions	(54,503)	(181)
Total gain on sale of real estate	0	(781)
Gain on early extinguishment of debt	(941)	0
Provision for impairment	44,407	16,134
Loss from unconsolidated real estate ventures, including income distributions	153,957	24,504
Income tax provision	11	35
Changes in assets and liabilities:
Accounts receivable	1,787	(2,362)
Other assets	(14,343)	(24,619)
Accounts payable and accrued expenses	4,851	(8,992)
Deferred income, gains and rent	(1,740)	(1,196)
Other liabilities	634	3,089
Net cash provided by operating activities	124,202	111,405
Cash flows from investing activities:
Proceeds from the sale of properties	45,250	51,285
Capital expenditures for tenant improvements	(55,214)	(34,219)
Capital expenditures for redevelopments	(8,747)	(42,592)
Capital expenditures for developments	(29,580)	(30,149)
Advances for the purchase of tenant assets, net of repayments	1,377	(9,292)
Investment in unconsolidated real estate ventures	(143,751)	(72,715)
Deposits for real estate	0	3,500
Capital distributions from unconsolidated real estate ventures	3,941	2,700
Leasing costs paid	(6,307)	(7,969)
Net cash used in investing activities	(193,031)	(139,451)
Cash flows from financing activities:
Proceeds from credit facility borrowings	131,000	172,000
Repayments of credit facility borrowings	(91,000)	(260,500)
Proceeds from unsecured notes	13,000	70,000
Repayments of unsecured notes	(339,059)	(54,301)
Proceeds from unsecured notes	400,000	0
Proceeds from secured term loan	0	245,000
Proceeds from construction loan	15,943	0
Debt financing costs paid	(6,334)	(4,371)
Shares used for employee taxes upon vesting of share awards	(1,028)	(952)
Distributions paid to preferred and common partnership units	(78,303)	(98,306)
Net cash provided by financing activities	43,988	68,276
Increase/(Decrease) in cash and cash equivalents and restricted cash	(24,841)	40,230
Cash and cash equivalents and restricted cash at beginning of period	67,534	18,387
Cash and cash equivalents and restricted cash at end of period	42,693	58,617
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	58,319	17,551
Restricted cash, beginning of period	9,215	836
Cash and cash equivalents and restricted cash at beginning of period	67,534	18,387
Cash and cash equivalents, end of period	36,498	47,872
Restricted cash, end of period	6,195	10,745
Cash and cash equivalents and restricted cash at end of period	42,693	58,617
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2024 and 2023 of $13,866 and $12,602, respectively	86,398	73,217
Cash paid for income taxes	0	550
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	26,230	26,027
Change in investment in real estate ventures as a result of deconsolidation	0	8,595
Change in operating real estate from deconsolidation of operating properties	0	(7,814)
Change in notes receivable from sale of properties	19,919	0
Change in capital expenditures financed through accounts payable at period end	8,383	4,276
Change in capital expenditures financed through retention payable at period end	(2,331)	2,587
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Cash flows from operating activities:
Net loss	(151,867)	(39,649)
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	133,530	141,645
Amortization of deferred financing costs	3,753	3,251
Amortization of debt discount/(premium), net	(2,540)	(774)
Amortization of stock compensation costs	13,068	8,305
Straight-line rent income	(5,745)	(6,612)
Amortization of acquired above (below) market leases, net	(706)	(993)
Ground rent expense	589	601
Net gain on real estate venture transactions	(54,503)	(181)
Total gain on sale of real estate	0	(781)
Gain on early extinguishment of debt	(941)	0
Provision for impairment	44,407	16,134
Loss from unconsolidated real estate ventures, including income distributions	153,957	24,504
Income tax provision	11	35
Changes in assets and liabilities:
Accounts receivable	1,787	(2,362)
Other assets	(14,343)	(24,619)
Accounts payable and accrued expenses	4,851	(8,992)
Deferred income, gains and rent	(1,740)	(1,196)
Other liabilities	634	3,089
Net cash provided by operating activities	124,202	111,405
Cash flows from investing activities:
Proceeds from the sale of properties	45,250	51,285
Capital expenditures for tenant improvements	(55,214)	(34,219)
Capital expenditures for redevelopments	(8,747)	(42,592)
Capital expenditures for developments	(29,580)	(30,149)
Advances for the purchase of tenant assets, net of repayments	1,377	(9,292)
Investment in unconsolidated real estate ventures	(143,751)	(72,715)
Deposits for real estate	0	3,500
Capital distributions from unconsolidated real estate ventures	3,941	2,700
Leasing costs paid	(6,307)	(7,969)
Net cash used in investing activities	(193,031)	(139,451)
Cash flows from financing activities:
Proceeds from credit facility borrowings	131,000	172,000
Repayments of credit facility borrowings	(91,000)	(260,500)
Proceeds from unsecured notes	400,000	0
Repayments of unsecured notes	(339,059)	(54,301)
Proceeds from unsecured notes	13,000	70,000
Proceeds from secured term loan	0	245,000
Proceeds from construction loan	15,943	0
Debt financing costs paid	(6,334)	(4,371)
Shares used for employee taxes upon vesting of share awards	(1,028)	(952)
Distributions paid to preferred and common partnership units	(78,534)	(98,600)
Net cash provided by financing activities	43,988	68,276
Increase/(Decrease) in cash and cash equivalents and restricted cash	(24,841)	40,230
Cash and cash equivalents and restricted cash at beginning of period	67,534	18,387
Cash and cash equivalents and restricted cash at end of period	42,693	58,617
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	58,319	17,551
Restricted cash, beginning of period	9,215	836
Cash and cash equivalents and restricted cash at beginning of period	67,534	18,387
Cash and cash equivalents, end of period	36,498	47,872
Restricted cash, end of period	6,195	10,745
Cash and cash equivalents and restricted cash at end of period	42,693	58,617
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2024 and 2023 of $13,866 and $12,602, respectively	86,398	73,217
Cash paid for income taxes	0	550
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	26,230	26,027
Change in investment in real estate ventures as a result of deconsolidation	0	8,595
Change in operating real estate from deconsolidation of operating properties	0	(7,814)
Change in capital expenditures financed through accounts payable at period end	8,383	4,276
Change in capital expenditures financed through retention payable at period end	$ (2,331)	$ 2,587

XML

CONSOLIDATED STATEMENTS OF CASH FLOWS - BRANDYWINE OPERATING PARTNERSHIP L.P. (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Capitalized interest	$ 13,866	$ 12,602
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Capitalized interest	$ 13,866	$ 12,602

XML

ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP

1. ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP

Brandywine Realty Trust (the “Parent Company”) is a self-administered and self-managed real estate investment trust (“REIT”) engaged in the acquisition, development, redevelopment, ownership, management, and operation of a portfolio of office and mixed-use properties. The Parent Company owns its assets and conducts its operations through Brandywine Operating Partnership, L.P. (the “Operating Partnership”) and subsidiaries of the Operating Partnership. The Parent Company is the sole general partner of the Operating Partnership and, as of September 30, 2024, owned a 99.7% interest in the Operating Partnership. The Parent Company’s common shares of beneficial interest (“common shares”) are publicly traded on the New York Stock Exchange under the ticker symbol “BDN.” The Parent Company, the Operating Partnership, and their consolidated subsidiaries are collectively referred to as the “Company.”

As of September 30, 2024, the Company owned and consolidated 67 properties that contained an aggregate of approximately 12.5 million net rentable square feet (collectively, the “Properties”). The Company’s core portfolio of operating properties (the “Core Properties”) exclude properties under development or redevelopment properties, recently completed - not stabilized properties, and properties held for sale. The Properties were comprised of the following as of September 30, 2024:

	Number of Properties	Rentable Square Feet
Office properties	60	11,252,377
Mixed-use properties	4	924,450
Core Properties	64	12,176,827
Development/redevelopment properties	2	144,685
Recently completed - not stabilized properties (a)	1	168,294
The Properties	67	12,489,806

(a)The Company reclassifies a Property from “development/redevelopment property” to “recently completed – not-stabilized property” after the date that the development or redevelopment of the Property is placed in service and prior to the time that the Property reaches at least 90% occupy. At such time as the Property reaches at least 90% occupancy, the Company reclassifies the Property as a “Core Property.”

In addition to the Properties, as of September 30, 2024, the Company owned 130.6 acres of land held for development. The Company also held a leasehold interest in one land parcel totaling 0.8 acres, acquired through a prepaid 99-year ground lease, and held options to purchase approximately 5.1 additional acres of undeveloped land. As of September 30, 2024, the total potential development that this inventory of land could support under current zoning and entitlements, including the parcels under option, amounted to an estimated 11.9 million net rentable square feet.

As of September 30, 2024, the Company also owned economic interests in thirteen unconsolidated real estate ventures (see Note 4“Investment in Unconsolidated Real Estate Ventures,” for further information). The Properties and the properties owned by the unconsolidated real estate ventures are primarily located in or near Philadelphia, Pennsylvania; Austin, Texas; Metropolitan Washington, D.C.; Southern New Jersey; and Wilmington, Delaware.

The Company conducts its third-party real estate management services business primarily through wholly-owned management company subsidiaries. As of September 30, 2024, the management company subsidiaries were managing properties containing an aggregate of approximately 20.4 million net rentable square feet, of which approximately 12.5 million net rentable square feet relate to Properties owned by the Company and approximately 7.9 million net rentable square feet relate to properties owned by the unconsolidated real estate ventures.

Unless otherwise indicated, all references in this Form 10-Q to square feet and net rentable square feet represent net rentable area.

XML

BASIS OF PRESENTATION

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

BASIS OF PRESENTATION

2. BASIS OF PRESENTATION

Basis of Presentation

The consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial statements. Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, all adjustments consist solely of normal recurring matters, and result in a fair statement of the financial position of the Company as of September 30, 2024, the results of its operations for the three and nine months ended September 30, 2024 and 2023 and its cash flows for the nine months ended September 30, 2024 and 2023. The results of operations for such interim periods are not necessarily indicative of the results for a full year. These consolidated financial statements should be read in conjunction with the Parent Company’s and the Operating Partnership’s consolidated financial statements and footnotes

included in their combined Annual Report on Form 10-K for the year ended December 31, 2023 filed with the SEC on February 22, 2024.

The consolidated balance sheet at December 31, 2023 has been derived from the audited financial statements as of that date but does not include all the information and footnotes required by GAAP for complete financial statements. The Company’s Annual Report on Form 10-K for the year ended December 31, 2023 contains a discussion of the Company’s significant accounting policies under Note 2, “Summary of Significant Accounting Policies”. There have been no material changes in the Company’s significant accounting policies since December 31, 2023.

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The estimates and assumptions include, but are not limited to, the amount and timing of development/redevelopment costs and of Company obligations for such costs, including costs incurred through unconsolidated real estate ventures. The estimates and assumptions for development/redevelopment cost are highly judgmental, cover significant future time horizons and are sensitive to cost escalations, sales price escalations and timing and pricing of leasing activity, all of which may be affected by expectations about future market or economic conditions. Actual results could differ from these and other estimates.

Recent Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280). The new standard requires enhanced disclosures about significant segment expenses and other segment items and requires companies to disclose all annual disclosures about segments in interim periods. The new standard also permits companies to disclose more than one measure of segment profit or loss, requires disclosure of the title and position of the Chief Operating Decision Maker, and requires companies with a single reportable segment to provide all disclosures required by Topic 280. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and companies are required to apply the ASU retrospectively to all periods presented. The Company does not expect the standard to have a material impact on its consolidated financial statements.

XML

REAL ESTATE INVESTMENTS

9 Months Ended

Sep. 30, 2024

Real Estate [Abstract]

REAL ESTATE INVESTMENTS

3. REAL ESTATE INVESTMENTS

As of September 30, 2024 and December 31, 2023, the gross carrying value of the Properties, reflected in the line item “Operating properties” in the Company's consolidated balance sheets, was as follows (in thousands):

	September 30, 2024		December 31, 2023
Land	$	369,098	$	394,669
Building and improvements	2,577,361		2,671,024
Tenant improvements	463,146		476,539
Total	$	3,409,605	$	3,542,232

Dispositions

During the three months ended September 30, 2024, the Company sold the Plymouth Meeting Executive Center, comprised of five office properties totaling a 521,288 square feet located in Plymouth Meeting, Pennsylvania for a gross sales price of $65.5 million, and after closing costs and seller credits, received $44.1 million of net cash proceeds and $15.5 million in seller financing to the purchaser which is subordinate to a first mortgage. The seller financing is subject to mandatory redemption by no later than the tenth anniversary of the closing date of the sale and is classified within “Other Asset” on the consolidated balance sheet. Prior to the sale and during the three months ended September 30, 2024, the Company recognized a provision for impairment of $3.3 million on the properties based upon the executed purchase and sale agreement.

During the three months ended September 30, 2024, the Company sold 11 acres of land in Gibbsboro, New Jersey for $6.5 million and provided seller financing of $4.4 million. Prior to the sale and during the three months ended September 30, 2024, the Company recognized a provision for impairment of $0.6 million on the property based upon the executed purchase and sale agreement.

Held for Use Impairment

For the quarter ended September 30, 2024, the Company recognized impairment losses totaling $34.1 million on three properties, two of which are located in the Austin, Texas segment and one of which is in the Other segment. The estimated fair value is considered Level 3 in accordance with ASC 820 and was based upon purchase and sale agreements as of September 30, 2024. The closings under the purchase and sales agreements have not been consummated and there can be no assurance that the Company will complete the dispositions.

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

9 Months Ended

Sep. 30, 2024

Equity Method Investments and Joint Ventures [Abstract]

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

4. INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

As of September 30, 2024, the Company held ownership interests in thirteen unconsolidated real estate ventures, with a net aggregate investment balance of $602.7 million. As of September 30, 2024, six of the real estate ventures owned properties (directly or through leasehold interests) that contained an aggregate of approximately 9.1 million net rentable square feet of office space; two of the real estate ventures owned 1.4 acres of land held for development; four of the real estate ventures owned 7.5 acres of land in active development; and one of the real estate ventures owned a mixed-used tower comprised of 250 apartment units and 0.2 million net rentable square feet of office/retail space.

The Company accounts for its interests in the unconsolidated real estate ventures, which range from 5% to 78%, using the equity method. Certain of the unconsolidated real estate ventures are subject to specified priority allocations of distributable cash, including cash from operations and cash from capital events, such as sales of properties.

The Company earned management fees from the unconsolidated real estate ventures of $2.2 million and $2.1 million for the three months ended September 30, 2024 and 2023, respectively, and $5.9 million and $6.2 million for the nine months ended September 30, 2024 and 2023, respectively.

The Company earned leasing commissions from the unconsolidated real estate ventures of $0.2 million and $1.5 million for the three months ended September 30, 2024 and 2023, respectively, and $1.7 million and $2.9 million for the nine months ended September 30, 2024 and 2023, respectively.

The Company had outstanding accounts receivable balances from the unconsolidated real estate ventures of $4.6 million and $3.5 million as of September 30, 2024 and December 31, 2023, respectively.

The amounts reflected in the following tables (except for the Company’s share of equity in income) are based on the financial information of the individual unconsolidated real estate ventures.

The following is a summary of the financial position of the unconsolidated real estate ventures in which the Company held interests as of September 30, 2024 and December 31, 2023 (in thousands):

	September 30, 2024 (b)		December 31, 2023
Net property	$	1,760,185	$	2,339,921
Other assets	278,441		534,658
Other liabilities	147,265		443,536
Debt, net	824,714		1,407,858
Equity (a)	1,066,647		1,023,185

(a)This amount does not include the effect of the basis difference between the Company’s historical cost basis and the basis recorded at the real estate venture level, which is typically amortized over the life of the related assets and liabilities. Basis differentials occur from the impairment of investments, purchases of third-party interests in existing real estate ventures and upon the transfer of assets that were previously owned by the Company into a real estate venture. In addition, certain acquisition, transaction and other costs may not be reflected in the net assets at the real estate venture level.

(b)Excludes amounts related to the Herndon Innovation Center Metro Portfolio Venture, LLC and the New MAP Venture as the Company discontinued applying the equity method of accounting. The Company discontinued applying the equity method of accounting on the Herndon Innovation Center Metro Portfolio Venture, LLC after March 31, 2024 and discontinued applying the equity method of accounting on the New MAP Venture after June 30, 2024.

The following is a summary of results of operations of the unconsolidated real estate ventures in which the Company held interests during the three and nine-month periods ended September 30, 2024 and 2023 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024 (a)		2023		2024 (a)		2023
Revenue	$	33,058	$	58,986	$	122,951	$	175,939
Operating expenses	(13,680)		(31,641)		(63,985)		(90,531)
Interest expense, net	(12,030)		(21,591)		(44,980)		(55,769)
Depreciation and amortization	(14,518)		(24,635)		(54,499)		(73,636)
Provision for impairment	(116,543)		—		(116,543)		—
Loss on property disposition	490		—		—		—
Net loss	$	(123,223)	$	(18,881)	$	(157,056)	$	(43,997)
Ownership interest %	Various		Various		Various		Various
Company's share of net loss	$	(119,111)	$	(10,130)	$	(146,992)	$	(23,782)
Other-than-temporary impairment (b)	(6,833)		—		(6,833)		—
Basis adjustments and other	82		(609)		(132)		(722)
Equity in loss of unconsolidated real estate ventures	$	(125,862)	$	(10,739)	$	(153,957)	$	(24,504)

(a)Excludes amounts related to the Herndon Innovation Center Metro Portfolio Venture, LLC and the New MAP Venture as the Company discontinued applying the equity method of accounting. The Company discontinued applying the equity method of accounting on the Herndon Innovation Center Metro Portfolio Venture, LLC after March 31, 2024 and the New MAP Venture after June 30, 2024.

(b)Represents other-than-temporary impairment on investment in an unconsolidated joint venture due to a decline in fair value below the carrying value of our investments in the unconsolidated joint venture for the quarter ended September 30, 2024.

Mid-Atlantic Office Venture

On August 9, 2024 as part of a loan restructuring for the Mid-Atlantic Office Venture which included forgiveness of $39.8 million of the Venture's debt, the Company funded its $4.1 million portion of a lender pay down for the venture. Brandywine’s contribution is an equity method investment in the Mid-Atlantic Office JV. The Company recorded the contribution to Investment in unconsolidated real estate ventures on the consolidated balance sheet. The Mid-Atlantic Office Venture has liquidation rights and priorities that are different from ownership percentages. As such, equity in earnings is determined using the hypothetical liquidation book value (“HLBV”) method. Income or loss is recorded based on changes in what would be received should the entity liquidate all of its assets (as valued in accordance with GAAP) and distribute the resulting proceeds based on the terms of the respective agreements. The HLBV method is a balance sheet focused approach commonly applied to equity investments where cash distribution percentages vary at different points in time and are not directly linked to an equity holder’s ownership percentage.

Commerce Square Venture

On August 26, 2024, the Company agreed to fund and has subsequently funded, in November 2024, an additional $23 million common equity contribution to the Commerce Square Venture, the proceeds from which will be used by the Commerce Square Venture to pay down the preferred equity position of the Company’s current partner in the Commerce Square Venture, thereby increasing a portion of the Company’s ownership interest in the Commerce Square Venture to 84%. In connection with the Company’s funding agreement, the Commerce Square Venture recorded impairment charges of $116.5 million during the quarter ended September 30, 2024 based on the excess of the carrying value of the properties over their estimated fair value. The estimated fair value is considered Level 3 in accordance with ASC 820 and was based upon the third party appraisal.

4040 Wilson Venture

During the quarter ended September 30, 2024, our partner elected to acquire our 50% ownership interest in the 4040 Wilson Venture based on an agreed upon property valuation of $190.5M. As a result, the Company recognized an other than temporary impairment loss on its investment in the unconsolidated joint ventures of $6.8 million.

Original MAP Venture and New MAP Venture

On June 28, 2024, the Company recapitalized one of its unconsolidated real estate ventures, referred to as the “Original MAP Venture,” in which the Company had a negative investment balance of $52.2 million as of March 31, 2024 and a 50% ownership interest. Through the recapitalization, the Original MAP Venture transferred, for $26.0 million, 14 of the 57 properties in which it held ground lease interests to a newly-formed real estate venture, referred to below as the “KB JV,” owned equally between the Company and the ground lessor of the land on which all of the 57 properties are situated. The Original MAP Venture used substantially all of the proceeds it received from the transfer of the 14 properties to pay down its non-recourse mortgage loan to $154.6 million. Through the recapitalization of the Original MAP Venture, the Company redeemed the entire interest of its former partner in the Original MAP Venture for a nominal amount and reversed the Company’s negative investment balance to zero, resulting in a one-time, non-cash gain of $53.8 million. The non-recourse mortgage loan was amended as part of the pay-down, and, as amended, has a scheduled maturity date of March 1, 2027 (subject to mandatory pay downs as properties that remain owned by the New MAP Venture are sold), bears interest at SOFR plus 2.75% and provides the lender with a 95% entitlement to residual cash from operations and capital proceeds, if any, after the mortgage loan has been repaid and after all obligations to the ground lessor and other third parties have been satisfied. Pursuant to the amended loan, the Company has agreed to fund up to $12 million for tenant and capital improvements pursuant to leases that the Company proposes, in its discretion, to enter into at the properties owned by the New MAP Venture, which amounts, when funded, will accrue interest at 8.0% per annum.As of June 30, 2024, the Company's investment in the New MAP Venture was zero, and the Company discontinued applying the equity method of accounting on the New MAP Venture. The Company has not guaranteed any of the obligations of the New MAP Venture or otherwise committed to funding any future losses.

KB JV

As discussed above under “Original MAP Venture and New MAP Venture,” on June 28, 2024, the Company formed a new joint venture, KB JV, LLC (the "KB JV"), which acquired leasehold interests in 14 properties from the Original MAP Venture for $26.0 million. The 14 properties owned by the KB JV contain of an aggregate of 641,819 net rentable square feet and are located in Richmond, Virginia. The Company owns a 50% equity interest in the KB JV and the portfolio assets are unencumbered by third party debt. In connection with the formation of KB JV, KB JV loaned $13.0 million to the Company to fund a portion of the purchase of the 14 properties. The loan from KB JV is classified as “Unsecured term loan, net” on the consolidated balance sheet. If the properties owned by the KB JV are sold, the fee owner of the properties, has agreed to cause both the leasehold and fee interests in the portfolio to be sold.

XML

LEASES

9 Months Ended

Sep. 30, 2024

Leases [Abstract]

LEASES

5. LEASES

Lessor Accounting

The table below sets forth the allocation of lease revenue between fixed contractual payments and variable lease payments for the three and nine months ended September 30, 2024 and 2023 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Lease Revenue	2024		2023		2024		2023
Fixed contractual payments	$	91,844	$	94,478	$	276,050	$	279,129
Variable lease payments	22,982		23,851		70,249		72,754
Total	$	114,826	$	118,329	$	346,299	$	351,883

LEASES

5. LEASES

Lessor Accounting

The table below sets forth the allocation of lease revenue between fixed contractual payments and variable lease payments for the three and nine months ended September 30, 2024 and 2023 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Lease Revenue	2024		2023		2024		2023
Fixed contractual payments	$	91,844	$	94,478	$	276,050	$	279,129
Variable lease payments	22,982		23,851		70,249		72,754
Total	$	114,826	$	118,329	$	346,299	$	351,883

XML

INTANGIBLE ASSETS AND LIABILITIES

9 Months Ended

Sep. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS AND LIABILITIES

6. INTANGIBLE ASSETS AND LIABILITIES

As of September 30, 2024 and December 31, 2023, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	September 30, 2024
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	17,112	$	(10,940)	$	6,172
Tenant relationship value	110		(56)		54
Above market leases acquired	75		(52)		23
Total intangible assets, net	$	17,297	$	(11,048)	$	6,249
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	16,668	$	(9,110)	$	7,558

	December 31, 2023
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	24,281	$	(16,673)	$	7,608
Tenant relationship value	110		(52)		58
Above market leases acquired	75		(47)		28
Total intangible assets, net	$	24,466	$	(16,772)	$	7,694
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	17,588	$	(9,318)	$	8,270

As of September 30, 2024, the Company’s annual amortization for its intangible assets/liabilities, assuming no early lease terminations, was as follows (dollars in thousands):

	Assets		Liabilities
2024 (three months remaining)	$	373	$	217
2025	1,485		869
2026	1,093		739
2027	808		623
2028	313		534
Thereafter	2,177		4,576
Total	$	6,249	$	7,558

XML

DEBT OBLIGATIONS

9 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

DEBT OBLIGATIONS

7. DEBT OBLIGATIONS

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of September 30, 2024 and December 31, 2023 (in thousands):

	September 30, 2024		December 31, 2023		Effective Interest Rate		Maturity Date
SECURED DEBT:
$245.0M 5.88% Secured Term Loan due 2028	$	245,000	$	245,000	5.88%		February 2028
$50.0M Construction Loan due 2026	29,767		13,824		SOFR + 2.50%		August 2026
Principal balance outstanding	274,767		258,824
Less: deferred financing costs	(2,586)		(3,153)
Total Secured indebtedness	$	272,181	$	255,671
UNSECURED DEBT
$600.0M Unsecured Credit Facility	$	40,000	$	—	SOFR + 1.50%		June 2027	(a)
Term Loan - Swapped to fixed	250,000		250,000		SOFR + 1.70%	(b)	June 2027	(a)
$70.0M Term Loan	70,000		70,000		SOFR + 2.00%		February 2025	(a)
$350.0M 4.10% Guaranteed Notes due 2024	—		340,000		3.78%		October 2024
$450.0M 3.95% Guaranteed Notes due 2027	450,000		450,000		4.03%		November 2027
$350.0M 8.30% Guaranteed Notes due 2028	350,000		350,000		8.35%	(c)	March 2028
$350.0M 4.55% Guaranteed Notes due 2029	350,000		350,000		4.30%		October 2029
$400.0M 8.875% Guaranteed Notes due 2029	400,000		—		8.97%		April 2029
Indenture IA (Preferred Trust I)	27,062		27,062		SOFR + 1.51	(d)	March 2035
Indenture IB (Preferred Trust I)	25,774		25,774		SOFR + 1.51	(d)	April 2035
Indenture II (Preferred Trust II)	25,774		25,774		SOFR + 1.51	(d)	July 2035
Note Payable	13,000		—		4.66%		June 2027
Principal balance outstanding	2,001,610		1,888,610
Plus: original issue premium (discount), net	$	(663)	$	1,878
Less: deferred financing costs	(11,355)		(7,327)
Total unsecured indebtedness	$	1,989,592	$	1,883,161
Total Debt Obligations	$	2,261,773	$	2,138,832

(a)Spread includes a 10 basis point daily SOFR adjustment.

(b)On November 23, 2022, the $250.0 million unsecured term loan was swapped to a fixed rate. At September 30, 2024, the fixed rate for this instrument was 5.41% and matures on June 30, 2027. The effective date of the swap was January 31, 2023.

(c)During the third quarter of 2023, Moody’s downgraded the Company's senior unsecured credit rating from Baa3 to Ba1. As a result of the downgrade, the interest rate on the Company's 7.55% Guaranteed Notes due 2028 (the "2028 Notes") increased 25 basis points in September 2023 due to the coupon adjustment provisions within the 2028 Notes. During the first quarter of 2024, S&P downgraded the Company's senior unsecured credit rating from BBB- to BB+. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.05% in March 2024 due to the coupon adjustment provisions within the 2028 Notes. During the second quarter of 2024, Moody's downgraded the Company's senior unsecured credit rating from Ba1 to Ba2. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.30% in April 2024 due to the coupon adjustment provisions within the 2028 Notes.

(d)On January 16, 2024, the Trust Preferred I Indenture IA was swapped to a fixed rate at 5.14% for the period from March 30, 2024 to December 30, 2026 and Trust Preferred I Indenture IB and Trust Preferred II Indenture II were swapped to a fixed rate at 5.24% for the period from January 30, 2024 to January 30, 2027.

The Company utilizes borrowings under its unsecured credit facility (the “Unsecured Credit Facility”) for general business purposes, including to fund costs of acquisitions, developments and redevelopments of properties, and to fund share repurchases and repay other debt. The Unsecured Credit Facility provides for borrowings of up to $600.0 million and the per annum variable interest rate on borrowings is SOFR plus 1.40% plus a spread adjustment of 0.10%. The interest rate and

facility fee are subject to adjustment upon a change in the Company’s unsecured debt ratings. During the nine months ended September 30, 2024, the weighted-average interest rate on Unsecured Credit Facility borrowings was 6.90%, resulting in $1.4 million of interest expense for such period.

Guaranteed Notes due 2029

On April 12, 2024, the Company completed an underwritten offering of $400.0 million aggregate principal amount of its 8.875% Guaranteed Notes due 2029 (the “2029 Notes”). The 2029 Notes were priced at approximately 99.51% of their face amount. The Company received approximately $391.8 million of net proceeds after the deduction for underwriting discounts and offering expenses.

On April 15, 2024, the Company commenced a tender offer (the “Tender Offer”) for any and all of the outstanding $335.1 million principal amount of its 4.10% Guaranteed Notes due 2024 (the “2024 Notes”). The purchase price offered per $1,000 principal amount of 2024 Notes pursuant to the Tender Offer was determined by reference to the fixed spread for the 2024 Notes of 0 basis points plus the yield based on the bid-side price of the 4.250% U.S. Treasury due September 30, 2024. The Tender Offer expired on April 19, 2024. Upon completion of the Tender Offer, on April 23, 2024, the Company issued a redemption notice to redeem any 2024 Notes that remained outstanding after the Tender Offer. On June 7, 2024, the Company redeemed the $113.4 million principal amount of the 2024 Notes at the aggregate principal amount outstanding together with accrued and unpaid interest thereon to the redemption date. 

Additional Information on Unsecured and Secured Consolidated Debt

The Parent Company unconditionally guarantees the unsecured debt obligations of the Operating Partnership (or is a co-borrower with the Operating Partnership) but does not by itself incur unsecured indebtedness. The Parent Company has no material assets other than its investment in the Operating Partnership.

The Company was in compliance with all financial covenants as of September 30, 2024. Certain of the covenants restrict the Company’s ability to obtain alternative sources of capital.

As of September 30, 2024, the aggregate scheduled principal payments on the Company’s consolidated debt obligations (secured and unsecured) were as follows (in thousands):

2024 (three months remaining)	$	—
2025	70,000
2026	29,767
2027	753,000
2028	595,000
Thereafter	828,610
Total principal payments	2,276,377
Net unamortized premiums/(discounts)	(663)
Net deferred financing costs	(13,941)
Outstanding indebtedness	$	2,261,773

XML

FAIR VALUE OF FINANCIAL INSTRUMENTS

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

FAIR VALUE OF FINANCIAL INSTRUMENTS

8. FAIR VALUE OF FINANCIAL INSTRUMENTS

Financial assets and liabilities recorded on the Company's consolidated balance sheets are categorized based on the inputs to the valuation techniques as follows:

•Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that the Company has the ability to access;

•Level 2 inputs are inputs, other than quoted prices included in Level 1, which are observable for the asset or liability, either directly or indirectly. Level 2 inputs may include quoted prices for similar assets and liabilities in active markets, as well as inputs that are observable for the asset or liability (other than quoted prices), such as interest rates, foreign exchange rates, and yield curves that are observable at commonly quoted intervals; and

•Level 3 inputs are unobservable inputs for the asset or liability, which is typically based on an entity’s own assumptions, as there is little, if any, related market activity or information.

The Company determined the fair values disclosed below using available market information and discounted cash flow analyses as of September 30, 2024 and December 31, 2023, respectively. The discount rate used in calculating fair value is the sum of the current risk free rate and the risk premium on the date of measurement of the instruments or obligations. Considerable

judgment is necessary to interpret market data and to develop the related estimates of fair value. Accordingly, the estimates presented are not necessarily indicative of the amounts that the Company could realize upon disposition. The use of different estimates and valuation methodologies may have a material effect on the fair value amounts shown. The Company believes that the carrying amounts reflected in the consolidated balance sheets at September 30, 2024 and December 31, 2023 approximate the fair values for cash and cash equivalents, accounts receivable, other assets and liabilities, accounts payable and accrued expenses because they are short-term in duration. The following are financial instruments for which the Company’s estimates of fair value differ from the carrying amounts (in thousands):

	September 30, 2024				December 31, 2023
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,552,185	$	1,586,000	$	1,486,052	$	1,386,621
Variable rate debt	467,174		433,908		410,932		370,665
Fixed rate debt	242,415		237,376		241,847		233,088

(a)Net of deferred financing costs of $10.2 million and $5.8 million for unsecured notes payable, $1.2 million and $1.5 million for variable rate debt and $2.6 million and $3.2 million for secured fixed rate debt as of September 30, 2024 and December 31, 2023.

The Company used quoted market prices as of September 30, 2024 and December 31, 2023 to value the unsecured notes payable and, as such, categorized them as Level 2.

The inputs utilized to determine the fair value of the Company’s variable rate debt are categorized as Level 3. The fair value of the variable rate debt was determined using a discounted cash flow model that considered borrowing rates available to the Company for loans with similar terms and characteristics.

The inputs utilized to determine fair value of the Company’s notes receivable are unobservable and, as such, were categorized as Level 3. Fair value was determined using a discounted cash flow model that considered the contractual interest and principal payments discounted at a blended interest rate of the notes receivable.

For the Company’s Level 3 financial instruments for which fair value is disclosed, an increase in the discount rate used to determine fair value would result in a decrease to the fair value. Conversely, a decrease in the discount rate would result in an increase to the fair value.

Disclosure about the fair value of financial instruments is based upon pertinent information available to management as of September 30, 2024 and December 31, 2023. Although management is not aware of any factors that would significantly affect the fair value amounts, such amounts were not comprehensively revalued for purposes of these financial statements since September 30, 2024. Current estimates of fair value may differ from the amounts presented herein.

XML

DERIVATIVE FINANCIAL INSTRUMENTS

9 Months Ended

Sep. 30, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

9. DERIVATIVE FINANCIAL INSTRUMENTS

The following table summarizes the terms and fair values of the Company’s derivative financial instruments as of September 30, 2024 and December 31, 2023. The notional amounts provide an indication of the extent of the Company’s involvement in these instruments at that time, but do not represent exposure to credit, interest rate or market risks (amounts presented in thousands).

Hedge Product	Hedge Type	Designation		Notional Amount				Strike		Trade Date	Maturity Date	Fair value
				9/30/2024		12/31/2023						9/30/2024		12/31/2023
Liabilities
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	3.729	%	November 23, 2022	June 30, 2027	$	(2,707)	$	(757)
Swap	Interest Rate	Cash Flow	(a)	27,062		—		3.629	%	January 12, 2024	December 30, 2026	(420)		—
Swap	Interest Rate	Cash Flow	(a)	51,548		—		3.725	%	January 12, 2024	January 30, 2027	(160)		—
				$	328,610	$	250,000

(a)Hedging unsecured variable rate debt.

The Company measures its derivative instruments at fair value and records them in “Other assets” and “Other liabilities” on the Company’s consolidated balance sheets.

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, the credit valuation adjustments associated with its derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by itself and its counterparties. The Company has assessed the significance of the impact of the credit valuation adjustments on the overall valuation of its derivative positions and has determined that the credit valuation adjustments are not significant to the overall valuation of its derivatives. As a result, the Company has determined that the inputs utilized to determine the fair value of derivative instruments are classified in Level 2 of the fair value hierarchy.

XML

LIMITED PARTNERS' NONCONTROLLING INTERESTS IN THE PARENT COMPANY

9 Months Ended

Sep. 30, 2024

Noncontrolling Interest [Abstract]

LIMITED PARTNERS' NONCONTROLLING INTERESTS IN THE PARENT COMPANY

10. LIMITED PARTNERS’ NONCONTROLLING INTERESTS IN THE PARENT COMPANY

Noncontrolling interests in the Parent Company’s financial statements relate to redeemable common limited partnership interests in the Operating Partnership held by parties other than the Parent Company and properties which are consolidated but not wholly-owned by the Operating Partnership.

Operating Partnership

The aggregate book value of the noncontrolling interests associated with the redeemable common limited partnership units in the accompanying consolidated balance sheet of the Parent Company was $3.3 million and $4.1 million as of September 30, 2024 and December 31, 2023, respectively. Under the applicable accounting guidance, the redemption value of the redeemable common limited partnership units is carried at fair value. The aggregate settlement value of these units (based on the number of units outstanding and the average closing price of the common shares during the last five business days of the quarter ended September 30, 2024) was approximately $2.8 million and $2.8 million as of September 30, 2024 and December 31, 2023, respectively.

XML

BENEFICIARIES' EQUITY OF THE PARENT COMPANY

9 Months Ended

Sep. 30, 2024

Equity [Abstract]

BENEFICIARIES' EQUITY OF THE PARENT COMPANY

11. BENEFICIARIES’ EQUITY OF THE PARENT COMPANY

Earnings per Share (EPS)

The following table details the number of shares and net income used to calculate basic and diluted earnings per share (in thousands, except share and per share amounts; results may not add due to rounding):

	Three Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(165,720)	$	(165,720)	$	(21,636)	$	(21,636)
Net loss attributable to noncontrolling interests	500		500		82		82
Nonforfeitable dividends allocated to unvested restricted shareholders	(276)		(276)		(159)		(159)
Net loss attributable to common shareholders	$	(165,496)	$	(165,496)	$	(21,713)	$	(21,713)
Denominator
Weighted-average shares outstanding	172,668,731		172,668,731		172,097,661		172,097,661
Weighted-average shares outstanding	172,668,731		172,668,731		172,097,661		172,097,661
Loss per Common Share:
Net loss attributable to common shareholders	$	(0.96)	$	(0.96)	$	(0.13)	$	(0.13)

	Nine Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(151,867)	$	(151,867)	$	(39,649)	$	(39,649)
Net loss attributable to noncontrolling interests	452		452		140		140
Nonforfeitable dividends allocated to unvested restricted shareholders	(889)		(889)		(433)		(433)
Net loss attributable to common shareholders	$	(152,304)	$	(152,304)	$	(39,942)	$	(39,942)
Denominator
Weighted-average shares outstanding	172,480,325		172,480,325		171,912,552		171,912,552
Weighted-average shares outstanding	172,480,325		172,480,325		171,912,552		171,912,552
Loss per Common Share:
Net loss attributable to common shareholders	$	(0.88)	$	(0.88)	$	(0.23)	$	(0.23)

Redeemable common limited partnership units totaling 515,595 and 516,467 at September 30, 2024 and September 30, 2023, respectively, were excluded from the diluted earnings per share computations because they are not dilutive. The reduction in the number of outstanding common limited partnership units reflects the redemption for cash of 872 such units on December 19, 2023.

Unvested restricted shares are considered participating securities which require the use of the two-class method for the computation of basic and diluted earnings per share. For the three and nine months ended September 30, 2024 and 2023, earnings representing nonforfeitable dividends as noted in the table above were allocated to the unvested restricted shares issued to the Company’s executives and other employees under the Company’s shareholder-approved long-term equity incentive plan.

Common Shares

On September 25, 2024, the Parent Company declared a distribution of $0.15 per common share, totaling $26.3 million, which was paid on October 24, 2024 to shareholders of record as of October 9, 2024.

The Parent Company maintains a common share repurchase program under which the Board of Trustees has authorized the Parent Company to repurchase its common shares. On January 3, 2019, the Board of Trustees authorized the repurchase of up to $150.0 million of the Company's common shares from and after January 3, 2019. During the nine months ended September 30, 2024 and September 30, 2023, the Company did not repurchase any common shares.

XML

PARTNERS' EQUITY OF THE PARENT COMPANY

9 Months Ended

Sep. 30, 2024

Equity [Abstract]

PARTNERS' EQUITY OF THE PARENT COMPANY

12. PARTNERS’ EQUITY OF THE PARENT COMPANY

Earnings per Common Partnership Unit

The following table details the number of units and net income used to calculate basic and diluted earnings per common partnership unit (in thousands, except unit and per unit amounts; results may not add due to rounding):

	Three Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(165,720)	$	(165,720)	$	(21,636)	$	(21,636)
Net loss attributable to noncontrolling interests	3		3		20		20
Nonforfeitable dividends allocated to unvested restricted unitholders	(276)		(276)		(159)		(159)
Net loss attributable to common unitholders	$	(165,993)	$	(165,993)	$	(21,775)	$	(21,775)
Denominator
Total weighted-average units outstanding	173,184,325		173,184,325		172,614,128		172,614,128
Loss per Common Partnership Unit:
Net loss attributable to common unitholders	$	(0.96)	$	(0.96)	$	(0.13)	$	(0.13)

	Nine Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(151,867)	$	(151,867)	$	(39,649)	$	(39,649)
Net (income) loss attributable to noncontrolling interests	(3)		(3)		21		21
Nonforfeitable dividends allocated to unvested restricted unitholders	(889)		(889)		(433)		(433)
Net loss attributable to common unitholders	$	(152,759)	$	(152,759)	$	(40,061)	$	(40,061)
Denominator
Total weighted-average units outstanding	172,995,920		172,995,920		172,429,019		172,429,019
Loss per Common Partnership Unit:
Net loss attributable to common unitholders	$	(0.88)	$	(0.88)	$	(0.23)	$	(0.23)

Unvested restricted units are considered participating securities which require the use of the two-class method for the computation of basic and diluted earnings per unit. For the three and nine months ended September 30, 2024 and 2023, earnings representing nonforfeitable dividends were allocated to the unvested restricted units issued to the Parent Company’s executives and other employees under the Parent Company’s shareholder-approved long-term incentive plan.

Common Partnership Units

On September 25, 2024, the Operating Partnership declared a distribution of $0.15 per common partnership unit, totaling $0.1 million, which was paid on October 24, 2024 to unitholders of record as of October 9, 2024.

In connection with the Parent Company’s common share repurchase program, one common unit of the Operating Partnership is retired for each common share repurchased. During the nine months ended September 30, 2024 and September 30, 2023, the Company did not repurchase any units.

XML

SEGMENT INFORMATION

9 Months Ended

Sep. 30, 2024

Segment Reporting [Abstract]

SEGMENT INFORMATION

13. SEGMENT INFORMATION

As of September 30, 2024, the Company owns and manages properties within four segments: (1) Philadelphia Central Business District (“Philadelphia CBD”), (2) Pennsylvania Suburbs, (3) Austin, Texas and (4) Other. The Philadelphia CBD segment includes properties located in the City of Philadelphia, Pennsylvania. The Pennsylvania Suburbs segment includes properties in Chester, Delaware, and Montgomery counties in the Philadelphia suburbs. The Austin, Texas segment includes properties in the City of Austin, Texas. The Other segment includes properties located in the District of Columbia, Northern Virginia, Southern Maryland, Camden County, New Jersey and New Castle County, Delaware. In addition to the four segments, the corporate group is responsible for cash and investment management, development/redevelopment of certain real estate properties during the construction period, and certain other general support functions. Land held for development and construction in progress is transferred to operating properties by region upon completion of the associated construction or project.

The Company’s segments are based on the Company’s method of internal reporting, which classifies the Company's operations by geographic area. The following tables provide selected asset information and results of operations of the Company’s reportable segments (in thousands):

Real estate investments, at cost:
	September 30, 2024		December 31, 2023
Philadelphia CBD	$	1,535,263	$	1,534,893
Pennsylvania Suburbs	803,267		900,230
Austin, Texas	790,435		801,973
Total Core Segments	3,128,965		3,237,096
Other	280,640		305,136
Operating properties	$	3,409,605	$	3,542,232
Corporate
Right of use asset - operating leases, net	$	18,565	$	19,031
Construction-in-progress	$	166,278	$	135,529
Land held for development	$	78,259	$	82,510
Prepaid leasehold interests in land held for development, net	$	27,762	$	27,762

Net operating income:

	Three Months Ended September 30,
	2024						2023
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	56,448	$	(19,959)	$	36,489	$	56,367	$	(18,609)	$	37,758
Pennsylvania Suburbs	31,681		(10,081)		21,600		32,611		(9,770)		22,841
Austin, Texas	21,951		(8,429)		13,522		24,457		(10,044)		14,413
Other	10,430		(5,076)		5,354		10,295		(5,526)		4,769
Corporate	11,272		(2,734)		8,538		5,642		(2,450)		3,192
Operating properties	$	131,782	$	(46,279)	$	85,503	$	129,372	$	(46,399)	$	82,973

	Nine Months Ended September 30,
	2024						2023
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	169,159	$	(58,912)	$	110,247	$	169,265	$	(59,452)	$	109,813
Pennsylvania Suburbs	95,366		(29,337)		66,029		97,484		(29,633)		67,851
Austin, Texas	67,360		(26,276)		41,084		73,475		(30,021)		43,454
Other	31,706		(15,670)		16,036		28,572		(15,788)		12,784
Corporate	20,021		(9,812)		10,209		15,685		(8,359)		7,326
Operating properties	$	383,612	$	(140,007)	$	243,605	$	384,481	$	(143,253)	$	241,228

Includes property operating expenses, real estate taxes and third-party management expense.

Unconsolidated real estate ventures:
	Investment in real estate ventures				Equity in income (loss) of real estate ventures
	As of				Three Months Ended September 30,				Nine Months Ended September 30,
	September 30, 2024		December 31, 2023		2024		2023		2024		2023
Philadelphia CBD	$	419,700	$	450,136	$	(125,593)	$	(6,537)	$	(145,429)	$	(14,208)
Metropolitan Washington, D.C.	86,666		71,931		(6,915)		(1,306)		(8,608)		(3,896)
Mid-Atlantic Office JV	10,925		—		7,222		182		7,222		595
MAP Venture	—		(48,733)		10		(3,078)		(6,552)		(6,995)
Austin, Texas	85,409		79,160		(586)		—		(590)		—
Total	$	602,700	$	552,494	$	(125,862)	$	(10,739)	$	(153,957)	$	(24,504)

Net operating income (“NOI”) is a non-GAAP financial measure, which we define as total property revenue less property operating expenses, real estate taxes and third-party management expenses. Property operating expenses that are included in determining NOI consist of costs that are necessary and allocable to our operating properties such as utilities, property-level salaries, repairs and maintenance, property insurance and management fees. General and administrative expenses that are not reflected in NOI primarily consist of corporate-level salaries, amortization of share awards and professional fees that are incurred as part of corporate office management. NOI presented by the Company may not be comparable to NOI reported by other companies that define NOI differently. NOI is the primary measure that is used by the Company’s management to evaluate the operating performance of the Company’s real estate assets by segment. The Company believes NOI provides useful information to investors regarding the financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. While NOI is a relevant and widely used measure of operating performance of real estate investment trusts, it does not represent cash flow from operations or net income as defined by GAAP and should not be considered as an alternative to those measures in evaluating our liquidity or operating performance. NOI does not reflect interest expenses, real estate impairment losses, depreciation and amortization costs, capital expenditures and leasing costs. The Company believes that net income (loss), as defined by GAAP, is the most appropriate earnings measure. The following is a reconciliation of consolidated net income (loss), as defined by GAAP, to consolidated NOI, (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Net loss	$	(165,720)	$	(21,636)	$	(151,867)	$	(39,649)
Plus:
Interest expense	30,561		24,355		85,104		70,677
Interest expense - amortization of deferred financing costs	1,247		1,110		3,753		3,251
Depreciation and amortization	44,301		48,966		133,530		141,645
General and administrative expenses	12,681		8,069		32,726		26,911
Equity in loss of unconsolidated real estate ventures	125,862		10,739		153,957		24,504
Provision for impairment	37,980		11,666		44,407		16,134
Gain on early extinguishment of debt	—		—		(941)		—
Less:
Interest and investment income	639		293		2,572		1,318
Income tax benefit (provision)	—		3		(11)		(35)
Net gain on sale of undepreciated real estate	—		—		—		781
Net gain on real estate venture transactions	770		—		54,503		181
Consolidated net operating income	$	85,503	$	82,973	$	243,605	$	241,228

XML

COMMITMENTS AND CONTINGENCIES

9 Months Ended

Sep. 30, 2024

Commitments and Contingencies Disclosure [Abstract]

COMMITMENTS AND CONTINGENCIES

14. COMMITMENTS AND CONTINGENCIES

Legal Proceedings

The Company is involved from time to time in litigation on various matters, including disputes with tenants, vendors and disputes arising out of agreements to purchase or sell properties. Given the nature of the Company’s business activities, these lawsuits are considered routine to the conduct of its business. The result of any particular lawsuit cannot be predicted, because of the very nature of litigation, the litigation process and its adversarial nature, and the jury system. The Company will establish reserves for specific legal proceedings when it determines that the likelihood of an unfavorable outcome is probable and when the amount of loss is reasonably estimable. The Company does not expect that the liabilities, if any, that may ultimately result from such legal actions will have a material adverse effect on the consolidated financial position, results of operations or cash flows of the Company.

Environmental

As an owner of real estate, the Company is subject to various environmental laws of federal, state, and local governments. The Company’s compliance with existing laws has not had a material adverse effect on its financial condition and results of operations, and the Company does not believe it will have a material adverse effect in the future. However, the Company cannot predict the impact of unforeseen environmental contingencies or new or changed laws or regulations on its current Properties or on properties that the Company may acquire.

Debt Guarantees and Equity Funding Commitments

As of September 30, 2024, the Company’s unconsolidated real estate ventures had aggregate indebtedness of $890.8 million. These loans are generally mortgage loans or secured construction loans, most of which are nonrecourse to the Company, except for customary recourse carve-outs. In addition, during construction undertaken by the unconsolidated real estate ventures, including the 3025 JFK Venture, the 3151 Market Street Venture, and the One Uptown Ventures, the Company has provided, and expects to continue to provide, cost overrun and completion guarantees, as well as customary environmental indemnities and guarantees of customary exceptions to nonrecourse provisions in loan agreements.

In the agreement with its partner in the 3025 JFK Venture, the Company agreed to provide cost overrun and completion guarantees for the project under development. With respect to the construction loan obtained by 3025 JFK Venture on July 23, 2021, the Company also provided a carry guarantee and limited payment guarantee up to 25% of the principal balance of the $186.7 million construction loan.

In the agreement with its partner in the 3151 Market Street Venture, the Company agreed to provide cost overrun and completion guaranties for the project under development. As of September 30, 2024, total estimated costs to develop 3151 Market Street are approximately $316.9 million and as of such date, the Company has fully funded its share of equity. However, the development budget for this project contemplated receipt of a construction loan of approximately $174.3 million, reflecting a 55% loan to value ratio and, as of the date of this Form 10-Q, no construction loan has been obtained and there can be no assurance that a loan will be obtained. In the event that costs are incurred before a construction loan has been obtained, the Company expects to fund such costs through its credit facilities and cash on hand.

With respect to the One Uptown Ventures, the Company has provided completion guarantees and environmental indemnities in favor of its partner. In addition, the Company has provided completion guarantees, environmental indemnities and guarantees of exceptions to nonrecourse loan provisions in favor of the lenders for the One Uptown Ventures. Moreover, the Company has provided, in favor of the lenders, carry guarantees and limited payment guarantees up to 30% and 15% of the principal balance of the $121.7 million (office) and $85.0 million (multifamily) construction loans, respectively.

The Company has agreed, pursuant to the leasehold mortgage loan to the New MAP Venture, to fund up to an additional $12 million for tenant and capital improvements pursuant to leases that the Company proposes, in its discretion, to enter into at the properties owned (through leasehold interests) by the New MAP Venture, which amounts, when funded, will accrue interest at 8.0% per annum.

The Company has agreed to contribute and has subsequently funded $23.0 million to the Commerce Square Venture in November 2024. See Note 4“Investment in Unconsolidated Real Estate Ventures,” for further information.

Impact of Natural Disasters and Casualty

The Company carries liability insurance to mitigate its exposure to certain losses, including those relating to property damage. The Company records the estimated amount of expected insurance proceeds for property damage and other losses incurred as an asset (typically a receivable from the insurer) and income up to the amount of the losses incurred when receipt of insurance proceeds is deemed probable. Any amount of insurance recovery in excess of the amount of the losses is considered a gain contingency and is not recorded until the proceeds are received.

Other Commitments or Contingencies

In connection with the Schuylkill Yards Project, the Company entered into a neighborhood engagement program and, as of September 30, 2024, had $5.6 million of future fixed contractual obligations. The Company also committed to fund additional contributions under the program. As of September 30, 2024, the Company estimates that these additional contributions, which are not fixed under the terms of agreement, will be $2.0 million.

The Company has committed to contribute $15.0 million to a venture capital fund that invests in early-stage life science companies. As of September 30, 2024, the Company had funded $2.5 million of the foregoing commitment.

The Company invests in its properties and regularly incurs capital expenditures in the ordinary course of business to maintain the properties. The Company believes that such expenditures enhance its competitiveness. The Company also enters into construction, utility and service contracts in the ordinary course of business which may extend beyond one year. These contracts typically provide for cancellation with insignificant or no cancellation penalties.

XML

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Pay vs Performance Disclosure
Net Income (Loss)	$ (165,220)	$ (21,554)	$ (151,415)	$ (39,509)

XML

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

XML

BASIS OF PRESENTATION (Policies)

9 Months Ended

Sep. 30, 2024

Accounting Policies [Abstract]

Basis of Presentation

Basis of Presentation

The consolidated financial statements have been prepared by the Company pursuant to the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) for interim financial statements. Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, all adjustments consist solely of normal recurring matters, and result in a fair statement of the financial position of the Company as of September 30, 2024, the results of its operations for the three and nine months ended September 30, 2024 and 2023 and its cash flows for the nine months ended September 30, 2024 and 2023. The results of operations for such interim periods are not necessarily indicative of the results for a full year. These consolidated financial statements should be read in conjunction with the Parent Company’s and the Operating Partnership’s consolidated financial statements and footnotes

included in their combined Annual Report on Form 10-K for the year ended December 31, 2023 filed with the SEC on February 22, 2024.

The consolidated balance sheet at December 31, 2023 has been derived from the audited financial statements as of that date but does not include all the information and footnotes required by GAAP for complete financial statements. The Company’s Annual Report on Form 10-K for the year ended December 31, 2023 contains a discussion of the Company’s significant accounting policies under Note 2, “Summary of Significant Accounting Policies”. There have been no material changes in the Company’s significant accounting policies since December 31, 2023.

Use of Estimates

Use of Estimates

The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period. The estimates and assumptions include, but are not limited to, the amount and timing of development/redevelopment costs and of Company obligations for such costs, including costs incurred through unconsolidated real estate ventures. The estimates and assumptions for development/redevelopment cost are highly judgmental, cover significant future time horizons and are sensitive to cost escalations, sales price escalations and timing and pricing of leasing activity, all of which may be affected by expectations about future market or economic conditions. Actual results could differ from these and other estimates.

Recent Accounting Pronouncements

Recent Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280). The new standard requires enhanced disclosures about significant segment expenses and other segment items and requires companies to disclose all annual disclosures about segments in interim periods. The new standard also permits companies to disclose more than one measure of segment profit or loss, requires disclosure of the title and position of the Chief Operating Decision Maker, and requires companies with a single reportable segment to provide all disclosures required by Topic 280. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and companies are required to apply the ASU retrospectively to all periods presented. The Company does not expect the standard to have a material impact on its consolidated financial statements.

XML

ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP (Tables)

9 Months Ended

Sep. 30, 2024

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Core Portfolio of Operating Properties and Excludes Development, Redevelopment and Held for Sale

The Company’s core portfolio of operating properties (the “Core Properties”) exclude properties under development or redevelopment properties, recently completed - not stabilized properties, and properties held for sale. The Properties were comprised of the following as of September 30, 2024:

	Number of Properties	Rentable Square Feet
Office properties	60	11,252,377
Mixed-use properties	4	924,450
Core Properties	64	12,176,827
Development/redevelopment properties	2	144,685
Recently completed - not stabilized properties (a)	1	168,294
The Properties	67	12,489,806

(a)The Company reclassifies a Property from “development/redevelopment property” to “recently completed – not-stabilized property” after the date that the development or redevelopment of the Property is placed in service and prior to the time that the Property reaches at least 90% occupy. At such time as the Property reaches at least 90% occupancy, the Company reclassifies the Property as a “Core Property.”

XML

REAL ESTATE INVESTMENTS (Tables)

9 Months Ended

Sep. 30, 2024

Real Estate [Abstract]

Schedule of Gross Carrying Value of Operating Properties

As of September 30, 2024 and December 31, 2023, the gross carrying value of the Properties, reflected in the line item “Operating properties” in the Company's consolidated balance sheets, was as follows (in thousands):

	September 30, 2024		December 31, 2023
Land	$	369,098	$	394,669
Building and improvements	2,577,361		2,671,024
Tenant improvements	463,146		476,539
Total	$	3,409,605	$	3,542,232

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES (Tables)

9 Months Ended

Sep. 30, 2024

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Financial Position of Real Estate Ventures

The following is a summary of the financial position of the unconsolidated real estate ventures in which the Company held interests as of September 30, 2024 and December 31, 2023 (in thousands):

	September 30, 2024 (b)		December 31, 2023
Net property	$	1,760,185	$	2,339,921
Other assets	278,441		534,658
Other liabilities	147,265		443,536
Debt, net	824,714		1,407,858
Equity (a)	1,066,647		1,023,185

(a)This amount does not include the effect of the basis difference between the Company’s historical cost basis and the basis recorded at the real estate venture level, which is typically amortized over the life of the related assets and liabilities. Basis differentials occur from the impairment of investments, purchases of third-party interests in existing real estate ventures and upon the transfer of assets that were previously owned by the Company into a real estate venture. In addition, certain acquisition, transaction and other costs may not be reflected in the net assets at the real estate venture level.

(b)Excludes amounts related to the Herndon Innovation Center Metro Portfolio Venture, LLC and the New MAP Venture as the Company discontinued applying the equity method of accounting. The Company discontinued applying the equity method of accounting on the Herndon Innovation Center Metro Portfolio Venture, LLC after March 31, 2024 and discontinued applying the equity method of accounting on the New MAP Venture after June 30, 2024.

Schedule of Results of Operations of Real Estate Ventures with Interests

The following is a summary of results of operations of the unconsolidated real estate ventures in which the Company held interests during the three and nine-month periods ended September 30, 2024 and 2023 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024 (a)		2023		2024 (a)		2023
Revenue	$	33,058	$	58,986	$	122,951	$	175,939
Operating expenses	(13,680)		(31,641)		(63,985)		(90,531)
Interest expense, net	(12,030)		(21,591)		(44,980)		(55,769)
Depreciation and amortization	(14,518)		(24,635)		(54,499)		(73,636)
Provision for impairment	(116,543)		—		(116,543)		—
Loss on property disposition	490		—		—		—
Net loss	$	(123,223)	$	(18,881)	$	(157,056)	$	(43,997)
Ownership interest %	Various		Various		Various		Various
Company's share of net loss	$	(119,111)	$	(10,130)	$	(146,992)	$	(23,782)
Other-than-temporary impairment (b)	(6,833)		—		(6,833)		—
Basis adjustments and other	82		(609)		(132)		(722)
Equity in loss of unconsolidated real estate ventures	$	(125,862)	$	(10,739)	$	(153,957)	$	(24,504)

(a)Excludes amounts related to the Herndon Innovation Center Metro Portfolio Venture, LLC and the New MAP Venture as the Company discontinued applying the equity method of accounting. The Company discontinued applying the equity method of accounting on the Herndon Innovation Center Metro Portfolio Venture, LLC after March 31, 2024 and the New MAP Venture after June 30, 2024.

(b)Represents other-than-temporary impairment on investment in an unconsolidated joint venture due to a decline in fair value below the carrying value of our investments in the unconsolidated joint venture for the quarter ended September 30, 2024.

XML

LEASES (Tables)

9 Months Ended

Sep. 30, 2024

Leases [Abstract]

Schedule of Lease Income

The table below sets forth the allocation of lease revenue between fixed contractual payments and variable lease payments for the three and nine months ended September 30, 2024 and 2023 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Lease Revenue	2024		2023		2024		2023
Fixed contractual payments	$	91,844	$	94,478	$	276,050	$	279,129
Variable lease payments	22,982		23,851		70,249		72,754
Total	$	114,826	$	118,329	$	346,299	$	351,883

XML

INTANGIBLE ASSETS AND LIABILITIES (Tables)

9 Months Ended

Sep. 30, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Liabilities

As of September 30, 2024 and December 31, 2023, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	September 30, 2024
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	17,112	$	(10,940)	$	6,172
Tenant relationship value	110		(56)		54
Above market leases acquired	75		(52)		23
Total intangible assets, net	$	17,297	$	(11,048)	$	6,249
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	16,668	$	(9,110)	$	7,558

	December 31, 2023
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	24,281	$	(16,673)	$	7,608
Tenant relationship value	110		(52)		58
Above market leases acquired	75		(47)		28
Total intangible assets, net	$	24,466	$	(16,772)	$	7,694
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	17,588	$	(9,318)	$	8,270

Schedule of Amortization for Intangible Assets and Liabilities

As of September 30, 2024, the Company’s annual amortization for its intangible assets/liabilities, assuming no early lease terminations, was as follows (dollars in thousands):

	Assets		Liabilities
2024 (three months remaining)	$	373	$	217
2025	1,485		869
2026	1,093		739
2027	808		623
2028	313		534
Thereafter	2,177		4,576
Total	$	6,249	$	7,558

XML

DEBT OBLIGATIONS (Tables)

9 Months Ended

Sep. 30, 2024

Debt Disclosure [Abstract]

Schedule of Consolidated Debt Obligations

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of September 30, 2024 and December 31, 2023 (in thousands):

	September 30, 2024		December 31, 2023		Effective Interest Rate		Maturity Date
SECURED DEBT:
$245.0M 5.88% Secured Term Loan due 2028	$	245,000	$	245,000	5.88%		February 2028
$50.0M Construction Loan due 2026	29,767		13,824		SOFR + 2.50%		August 2026
Principal balance outstanding	274,767		258,824
Less: deferred financing costs	(2,586)		(3,153)
Total Secured indebtedness	$	272,181	$	255,671
UNSECURED DEBT
$600.0M Unsecured Credit Facility	$	40,000	$	—	SOFR + 1.50%		June 2027	(a)
Term Loan - Swapped to fixed	250,000		250,000		SOFR + 1.70%	(b)	June 2027	(a)
$70.0M Term Loan	70,000		70,000		SOFR + 2.00%		February 2025	(a)
$350.0M 4.10% Guaranteed Notes due 2024	—		340,000		3.78%		October 2024
$450.0M 3.95% Guaranteed Notes due 2027	450,000		450,000		4.03%		November 2027
$350.0M 8.30% Guaranteed Notes due 2028	350,000		350,000		8.35%	(c)	March 2028
$350.0M 4.55% Guaranteed Notes due 2029	350,000		350,000		4.30%		October 2029
$400.0M 8.875% Guaranteed Notes due 2029	400,000		—		8.97%		April 2029
Indenture IA (Preferred Trust I)	27,062		27,062		SOFR + 1.51	(d)	March 2035
Indenture IB (Preferred Trust I)	25,774		25,774		SOFR + 1.51	(d)	April 2035
Indenture II (Preferred Trust II)	25,774		25,774		SOFR + 1.51	(d)	July 2035
Note Payable	13,000		—		4.66%		June 2027
Principal balance outstanding	2,001,610		1,888,610
Plus: original issue premium (discount), net	$	(663)	$	1,878
Less: deferred financing costs	(11,355)		(7,327)
Total unsecured indebtedness	$	1,989,592	$	1,883,161
Total Debt Obligations	$	2,261,773	$	2,138,832

(a)Spread includes a 10 basis point daily SOFR adjustment.

(b)On November 23, 2022, the $250.0 million unsecured term loan was swapped to a fixed rate. At September 30, 2024, the fixed rate for this instrument was 5.41% and matures on June 30, 2027. The effective date of the swap was January 31, 2023.

(c)During the third quarter of 2023, Moody’s downgraded the Company's senior unsecured credit rating from Baa3 to Ba1. As a result of the downgrade, the interest rate on the Company's 7.55% Guaranteed Notes due 2028 (the "2028 Notes") increased 25 basis points in September 2023 due to the coupon adjustment provisions within the 2028 Notes. During the first quarter of 2024, S&P downgraded the Company's senior unsecured credit rating from BBB- to BB+. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.05% in March 2024 due to the coupon adjustment provisions within the 2028 Notes. During the second quarter of 2024, Moody's downgraded the Company's senior unsecured credit rating from Ba1 to Ba2. As a result of the downgrade, the interest rate on the 2028 Notes increased 25 basis points to 8.30% in April 2024 due to the coupon adjustment provisions within the 2028 Notes.

(d)On January 16, 2024, the Trust Preferred I Indenture IA was swapped to a fixed rate at 5.14% for the period from March 30, 2024 to December 30, 2026 and Trust Preferred I Indenture IB and Trust Preferred II Indenture II were swapped to a fixed rate at 5.24% for the period from January 30, 2024 to January 30, 2027.

Schedule of Maturities of Long-term Debt

As of September 30, 2024, the aggregate scheduled principal payments on the Company’s consolidated debt obligations (secured and unsecured) were as follows (in thousands):

2024 (three months remaining)	$	—
2025	70,000
2026	29,767
2027	753,000
2028	595,000
Thereafter	828,610
Total principal payments	2,276,377
Net unamortized premiums/(discounts)	(663)
Net deferred financing costs	(13,941)
Outstanding indebtedness	$	2,261,773

XML

FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2024

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments with Fair Values Different from their Carrying Amount

The following are financial instruments for which the Company’s estimates of fair value differ from the carrying amounts (in thousands):

	September 30, 2024				December 31, 2023
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,552,185	$	1,586,000	$	1,486,052	$	1,386,621
Variable rate debt	467,174		433,908		410,932		370,665
Fixed rate debt	242,415		237,376		241,847		233,088

(a)Net of deferred financing costs of $10.2 million and $5.8 million for unsecured notes payable, $1.2 million and $1.5 million for variable rate debt and $2.6 million and $3.2 million for secured fixed rate debt as of September 30, 2024 and December 31, 2023.

XML

DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

9 Months Ended

Sep. 30, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments in Statement of Financial Position, Fair Value

The following table summarizes the terms and fair values of the Company’s derivative financial instruments as of September 30, 2024 and December 31, 2023. The notional amounts provide an indication of the extent of the Company’s involvement in these instruments at that time, but do not represent exposure to credit, interest rate or market risks (amounts presented in thousands).

Hedge Product	Hedge Type	Designation		Notional Amount				Strike		Trade Date	Maturity Date	Fair value
				9/30/2024		12/31/2023						9/30/2024		12/31/2023
Liabilities
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	3.729	%	November 23, 2022	June 30, 2027	$	(2,707)	$	(757)
Swap	Interest Rate	Cash Flow	(a)	27,062		—		3.629	%	January 12, 2024	December 30, 2026	(420)		—
Swap	Interest Rate	Cash Flow	(a)	51,548		—		3.725	%	January 12, 2024	January 30, 2027	(160)		—
				$	328,610	$	250,000

(a)Hedging unsecured variable rate debt.

XML

BENEFICIARIES' EQUITY OF THE PARENT COMPANY (Tables)

9 Months Ended

Sep. 30, 2024

Equity [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table details the number of shares and net income used to calculate basic and diluted earnings per share (in thousands, except share and per share amounts; results may not add due to rounding):

	Three Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(165,720)	$	(165,720)	$	(21,636)	$	(21,636)
Net loss attributable to noncontrolling interests	500		500		82		82
Nonforfeitable dividends allocated to unvested restricted shareholders	(276)		(276)		(159)		(159)
Net loss attributable to common shareholders	$	(165,496)	$	(165,496)	$	(21,713)	$	(21,713)
Denominator
Weighted-average shares outstanding	172,668,731		172,668,731		172,097,661		172,097,661
Weighted-average shares outstanding	172,668,731		172,668,731		172,097,661		172,097,661
Loss per Common Share:
Net loss attributable to common shareholders	$	(0.96)	$	(0.96)	$	(0.13)	$	(0.13)

	Nine Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(151,867)	$	(151,867)	$	(39,649)	$	(39,649)
Net loss attributable to noncontrolling interests	452		452		140		140
Nonforfeitable dividends allocated to unvested restricted shareholders	(889)		(889)		(433)		(433)
Net loss attributable to common shareholders	$	(152,304)	$	(152,304)	$	(39,942)	$	(39,942)
Denominator
Weighted-average shares outstanding	172,480,325		172,480,325		171,912,552		171,912,552
Weighted-average shares outstanding	172,480,325		172,480,325		171,912,552		171,912,552
Loss per Common Share:
Net loss attributable to common shareholders	$	(0.88)	$	(0.88)	$	(0.23)	$	(0.23)

The following table details the number of units and net income used to calculate basic and diluted earnings per common partnership unit (in thousands, except unit and per unit amounts; results may not add due to rounding):

	Three Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(165,720)	$	(165,720)	$	(21,636)	$	(21,636)
Net loss attributable to noncontrolling interests	3		3		20		20
Nonforfeitable dividends allocated to unvested restricted unitholders	(276)		(276)		(159)		(159)
Net loss attributable to common unitholders	$	(165,993)	$	(165,993)	$	(21,775)	$	(21,775)
Denominator
Total weighted-average units outstanding	173,184,325		173,184,325		172,614,128		172,614,128
Loss per Common Partnership Unit:
Net loss attributable to common unitholders	$	(0.96)	$	(0.96)	$	(0.13)	$	(0.13)

	Nine Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(151,867)	$	(151,867)	$	(39,649)	$	(39,649)
Net (income) loss attributable to noncontrolling interests	(3)		(3)		21		21
Nonforfeitable dividends allocated to unvested restricted unitholders	(889)		(889)		(433)		(433)
Net loss attributable to common unitholders	$	(152,759)	$	(152,759)	$	(40,061)	$	(40,061)
Denominator
Total weighted-average units outstanding	172,995,920		172,995,920		172,429,019		172,429,019
Loss per Common Partnership Unit:
Net loss attributable to common unitholders	$	(0.88)	$	(0.88)	$	(0.23)	$	(0.23)

XML

PARTNERS' EQUITY OF THE PARENT COMPANY (Tables)

9 Months Ended

Sep. 30, 2024

Equity [Abstract]

Schedule of Earnings Per Share, Basic and Diluted

The following table details the number of shares and net income used to calculate basic and diluted earnings per share (in thousands, except share and per share amounts; results may not add due to rounding):

	Three Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(165,720)	$	(165,720)	$	(21,636)	$	(21,636)
Net loss attributable to noncontrolling interests	500		500		82		82
Nonforfeitable dividends allocated to unvested restricted shareholders	(276)		(276)		(159)		(159)
Net loss attributable to common shareholders	$	(165,496)	$	(165,496)	$	(21,713)	$	(21,713)
Denominator
Weighted-average shares outstanding	172,668,731		172,668,731		172,097,661		172,097,661
Weighted-average shares outstanding	172,668,731		172,668,731		172,097,661		172,097,661
Loss per Common Share:
Net loss attributable to common shareholders	$	(0.96)	$	(0.96)	$	(0.13)	$	(0.13)

	Nine Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(151,867)	$	(151,867)	$	(39,649)	$	(39,649)
Net loss attributable to noncontrolling interests	452		452		140		140
Nonforfeitable dividends allocated to unvested restricted shareholders	(889)		(889)		(433)		(433)
Net loss attributable to common shareholders	$	(152,304)	$	(152,304)	$	(39,942)	$	(39,942)
Denominator
Weighted-average shares outstanding	172,480,325		172,480,325		171,912,552		171,912,552
Weighted-average shares outstanding	172,480,325		172,480,325		171,912,552		171,912,552
Loss per Common Share:
Net loss attributable to common shareholders	$	(0.88)	$	(0.88)	$	(0.23)	$	(0.23)

The following table details the number of units and net income used to calculate basic and diluted earnings per common partnership unit (in thousands, except unit and per unit amounts; results may not add due to rounding):

	Three Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(165,720)	$	(165,720)	$	(21,636)	$	(21,636)
Net loss attributable to noncontrolling interests	3		3		20		20
Nonforfeitable dividends allocated to unvested restricted unitholders	(276)		(276)		(159)		(159)
Net loss attributable to common unitholders	$	(165,993)	$	(165,993)	$	(21,775)	$	(21,775)
Denominator
Total weighted-average units outstanding	173,184,325		173,184,325		172,614,128		172,614,128
Loss per Common Partnership Unit:
Net loss attributable to common unitholders	$	(0.96)	$	(0.96)	$	(0.13)	$	(0.13)

	Nine Months Ended September 30,
	2024				2023
	Basic		Diluted		Basic		Diluted
Numerator
Net loss	$	(151,867)	$	(151,867)	$	(39,649)	$	(39,649)
Net (income) loss attributable to noncontrolling interests	(3)		(3)		21		21
Nonforfeitable dividends allocated to unvested restricted unitholders	(889)		(889)		(433)		(433)
Net loss attributable to common unitholders	$	(152,759)	$	(152,759)	$	(40,061)	$	(40,061)
Denominator
Total weighted-average units outstanding	172,995,920		172,995,920		172,429,019		172,429,019
Loss per Common Partnership Unit:
Net loss attributable to common unitholders	$	(0.88)	$	(0.88)	$	(0.23)	$	(0.23)

XML

SEGMENT INFORMATION (Tables)

9 Months Ended

Sep. 30, 2024

Segment Reporting [Abstract]

Schedule of Real Estate Investments, Net Operating Income and Unconsolidated Real Estate Ventures of Reportable Segments

The following tables provide selected asset information and results of operations of the Company’s reportable segments (in thousands):

Real estate investments, at cost:
	September 30, 2024		December 31, 2023
Philadelphia CBD	$	1,535,263	$	1,534,893
Pennsylvania Suburbs	803,267		900,230
Austin, Texas	790,435		801,973
Total Core Segments	3,128,965		3,237,096
Other	280,640		305,136
Operating properties	$	3,409,605	$	3,542,232
Corporate
Right of use asset - operating leases, net	$	18,565	$	19,031
Construction-in-progress	$	166,278	$	135,529
Land held for development	$	78,259	$	82,510
Prepaid leasehold interests in land held for development, net	$	27,762	$	27,762

Net operating income:

	Three Months Ended September 30,
	2024						2023
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	56,448	$	(19,959)	$	36,489	$	56,367	$	(18,609)	$	37,758
Pennsylvania Suburbs	31,681		(10,081)		21,600		32,611		(9,770)		22,841
Austin, Texas	21,951		(8,429)		13,522		24,457		(10,044)		14,413
Other	10,430		(5,076)		5,354		10,295		(5,526)		4,769
Corporate	11,272		(2,734)		8,538		5,642		(2,450)		3,192
Operating properties	$	131,782	$	(46,279)	$	85,503	$	129,372	$	(46,399)	$	82,973

	Nine Months Ended September 30,
	2024						2023
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	169,159	$	(58,912)	$	110,247	$	169,265	$	(59,452)	$	109,813
Pennsylvania Suburbs	95,366		(29,337)		66,029		97,484		(29,633)		67,851
Austin, Texas	67,360		(26,276)		41,084		73,475		(30,021)		43,454
Other	31,706		(15,670)		16,036		28,572		(15,788)		12,784
Corporate	20,021		(9,812)		10,209		15,685		(8,359)		7,326
Operating properties	$	383,612	$	(140,007)	$	243,605	$	384,481	$	(143,253)	$	241,228

Includes property operating expenses, real estate taxes and third-party management expense.

Unconsolidated real estate ventures:
	Investment in real estate ventures				Equity in income (loss) of real estate ventures
	As of				Three Months Ended September 30,				Nine Months Ended September 30,
	September 30, 2024		December 31, 2023		2024		2023		2024		2023
Philadelphia CBD	$	419,700	$	450,136	$	(125,593)	$	(6,537)	$	(145,429)	$	(14,208)
Metropolitan Washington, D.C.	86,666		71,931		(6,915)		(1,306)		(8,608)		(3,896)
Mid-Atlantic Office JV	10,925		—		7,222		182		7,222		595
MAP Venture	—		(48,733)		10		(3,078)		(6,552)		(6,995)
Austin, Texas	85,409		79,160		(586)		—		(590)		—
Total	$	602,700	$	552,494	$	(125,862)	$	(10,739)	$	(153,957)	$	(24,504)

Schedule of Reconciliation of Consolidated Net Income to Consolidated NOI

The following is a reconciliation of consolidated net income (loss), as defined by GAAP, to consolidated NOI, (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
	2024		2023		2024		2023
Net loss	$	(165,720)	$	(21,636)	$	(151,867)	$	(39,649)
Plus:
Interest expense	30,561		24,355		85,104		70,677
Interest expense - amortization of deferred financing costs	1,247		1,110		3,753		3,251
Depreciation and amortization	44,301		48,966		133,530		141,645
General and administrative expenses	12,681		8,069		32,726		26,911
Equity in loss of unconsolidated real estate ventures	125,862		10,739		153,957		24,504
Provision for impairment	37,980		11,666		44,407		16,134
Gain on early extinguishment of debt	—		—		(941)		—
Less:
Interest and investment income	639		293		2,572		1,318
Income tax benefit (provision)	—		3		(11)		(35)
Net gain on sale of undepreciated real estate	—		—		—		781
Net gain on real estate venture transactions	770		—		54,503		181
Consolidated net operating income	$	85,503	$	82,973	$	243,605	$	241,228

XML

ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP - Narrative (Details)	9 Months Ended
	Sep. 30, 2024 a ft² parcel property
Organization of The Parent Company and The Operating Partnership [Line Items]
Number of real estate properties | property	67
Area of real estate property	12,489,806
Unconsolidated Properties | Unconsolidated Real Estate Ventures
Organization of The Parent Company and The Operating Partnership [Line Items]
Number of real estate properties | property	13
Parent Company
Organization of The Parent Company and The Operating Partnership [Line Items]
Area of real estate property	11,900,000
Areas of land held for development (in acres) | a	130.6
Lease agreement term	99 years
Area of additional undeveloped parcels of land with option to purchase (in acres) | a	5.1
Parent Company | Parcel of land
Organization of The Parent Company and The Operating Partnership [Line Items]
Lease agreement term	99 years
Parent Company | Leashold Interest Land
Organization of The Parent Company and The Operating Partnership [Line Items]
Areas of land held for development (in acres) | a	0.8
Number of parcels of land | parcel	1
Wholly-owned Management Company Subsidiaries
Organization of The Parent Company and The Operating Partnership [Line Items]
Area of real estate property	20,400,000
Wholly-owned Management Company Subsidiaries | Wholly Owned Properties
Organization of The Parent Company and The Operating Partnership [Line Items]
Area of real estate property	12,500,000
Wholly-owned Management Company Subsidiaries | Partially Owned Properties
Organization of The Parent Company and The Operating Partnership [Line Items]
Area of real estate property	7,900,000
Brandywine Operating Partnership LP
Organization of The Parent Company and The Operating Partnership [Line Items]
Ownership in the operating partnership	99.70%

XML

ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP - Schedule of Core Portfolio of Operating Properties and Excludes Development, Redevelopment and Held for Sale (Details)	Sep. 30, 2024 ft² property
Real Estate Properties [Line Items]
Number of Properties | property	67
Rentable Square Feet | ft²	12,489,806
Occupancy percentage	90.00%
Core Properties
Real Estate Properties [Line Items]
Number of Properties | property	64
Rentable Square Feet | ft²	12,176,827
Office properties
Real Estate Properties [Line Items]
Number of Properties | property	60
Rentable Square Feet | ft²	11,252,377
Mixed-use properties
Real Estate Properties [Line Items]
Number of Properties | property	4
Rentable Square Feet | ft²	924,450
Development/redevelopment properties
Real Estate Properties [Line Items]
Number of Properties | property	2
Rentable Square Feet | ft²	144,685
Recently completed - not stabilized properties
Real Estate Properties [Line Items]
Number of Properties | property	1
Rentable Square Feet | ft²	168,294

XML

REAL ESTATE INVESTMENTS - Schedule of Gross Carrying Value of Operating Properties (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Long Lived Assets Held-for-sale [Line Items]
Total	$ 3,409,605	$ 3,542,232
Continuing Operations
Long Lived Assets Held-for-sale [Line Items]
Land	369,098	394,669
Building and improvements	2,577,361	2,671,024
Tenant improvements	$ 463,146	$ 476,539

XML

REAL ESTATE INVESTMENTS - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) a ft² property	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) a ft² property	Sep. 30, 2023 USD ($)
Real Estate [Abstract]
Provision for impairment	$ 37,980	$ 11,666	$ 44,407	$ 16,134
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property	67		67
Provision for impairment	$ 37,980	$ 11,666	$ 44,407	$ 16,134
Impairment of properties held for sale	$ 34,100
Number of real estate properties impaired | property	3		3
Austin, Texas
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties impaired | property	2		2
Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties impaired | property	1		1
Plymouth Meeting Executive Center | Discontinued Operations, Disposed of by Sale
Real Estate [Abstract]
Provision for impairment	$ 3,300
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of real estate properties | property	5		5
Rentable area (in square feet) | ft²	521,288		521,288
Disposal group, including discontinued operation, consideration	$ 65,500		$ 65,500
Proceeds from sale of real estate	44,100
Seller financing amount	15,500		15,500
Provision for impairment	3,300
Gibbsboro | Discontinued Operations, Disposed of by Sale
Real Estate [Abstract]
Provision for impairment	600
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal group, including discontinued operation, consideration	6,500		6,500
Seller financing amount	4,400		$ 4,400
Provision for impairment	$ 600
Area of land (in acres) | a	11		11

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Narrative (Details) $ in Thousands, ft² in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) ft² a apartment property	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) ft² a apartment property	Sep. 30, 2023 USD ($)	Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of real estate properties	67		67
Accounts receivable | $	$ 8,669		$ 8,669		$ 11,977
Real Estate Venture
Schedule of Equity Method Investments [Line Items]
Accounts receivable | $	4,600		4,600		$ 3,500
Real Estate Venture | Management Fees
Schedule of Equity Method Investments [Line Items]
Service and other revenue | $	2,200	$ 2,100	5,900	$ 6,200
Real Estate Venture | Leasing Commission Income
Schedule of Equity Method Investments [Line Items]
Service and other revenue | $	200	$ 1,500	1,700	$ 2,900
Unconsolidated Real Estate Ventures
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated real estate ventures | $	$ 602,700		$ 602,700
Unconsolidated Real Estate Ventures | Minimum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	5.00%		5.00%
Unconsolidated Real Estate Ventures | Maximum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	78.00%		78.00%
Unconsolidated Real Estate Ventures | Office Properties
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures	6		6
Rentable area (in square feet) | ft²	9.1		9.1
Unconsolidated Real Estate Ventures | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Number of real estate properties	13		13
Unconsolidated Real Estate Ventures | Land Held For Development
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures	2		2
Area of land (in acres) | a	1.4		1.4
Unconsolidated Real Estate Ventures | Land Under Active Development
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures	4		4
Area of land (in acres) | a	7.5		7.5
Unconsolidated Real Estate Ventures | Mixed Use Tower
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures	1		1
Rentable area (in square feet) | ft²	0.2		0.2
Number of apartment units (in units) | apartment	250		250

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Schedule of Financial Position of Real Estate Ventures (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Net property	$ 2,543,477			$ 2,675,272
Other assets	121,509			86,051
Other liabilities	16,908			63,729
Debt, net	2,261,773			2,138,832
Equity	1,104,730	$ 1,299,397	$ 1,292,246	1,324,157	$ 1,514,368	$ 1,556,660	$ 1,593,218	$ 1,633,334
Investment In Nonconsolidated Real Estate
Schedule of Equity Method Investments [Line Items]
Net property	1,760,185			2,339,921
Other assets	278,441			534,658
Other liabilities	147,265			443,536
Debt, net	824,714			1,407,858
Equity	$ 1,066,647			$ 1,023,185

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Schedule of Results of Operations of Real Estate Ventures with Interests (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Schedule of Equity Method Investments [Line Items]
Revenue	$ 131,782			$ 129,372			$ 383,612	$ 384,481
Operating expenses	(141,241)			(115,100)			(350,670)	(327,943)
Interest expense, net	(30,561)			(24,355)			(85,104)	(70,677)
Depreciation and amortization	(44,301)			(48,966)			(133,530)	(141,645)
Provision for impairment	(37,980)			(11,666)			(44,407)	(16,134)
Net loss	(165,720)	$ 30,267	$ (16,414)	(21,636)	$ (12,737)	$ (5,276)	(151,867)	(39,649)
Other-than-temporary impairment	(6,833)			0			(6,833)	0
Equity in loss of unconsolidated real estate ventures	(125,862)			(10,739)			(153,957)	(24,504)
Investment In Nonconsolidated Real Estate
Schedule of Equity Method Investments [Line Items]
Revenue	33,058			58,986			122,951	175,939
Operating expenses	(13,680)			(31,641)			(63,985)	(90,531)
Interest expense, net	(12,030)			(21,591)			(44,980)	(55,769)
Depreciation and amortization	(14,518)			(24,635)			(54,499)	(73,636)
Provision for impairment	(116,543)			0			(116,543)	0
Loss on property disposition	490			0			0	0
Net loss	(123,223)			(18,881)			(157,056)	(43,997)
Company's share of net loss	(119,111)			(10,130)			(146,992)	(23,782)
Basis adjustments and other	$ 82			$ (609)			$ (132)	$ (722)

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Mid-Atlantic Office Venture (Details) - USD ($) $ in Thousands		9 Months Ended
	Aug. 09, 2024	Sep. 30, 2024	Sep. 30, 2023
Schedule of Equity Method Investments [Line Items]
Payments to acquire investment		$ 143,751	$ 72,715
Mid-Atlantic Office Venture
Schedule of Equity Method Investments [Line Items]
Loan restructuring which included forgiveness	$ 39,800
Payments to acquire investment	$ 4,100

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Commerce Square Venture (Details) - USD ($) $ in Thousands	Aug. 26, 2024	Sep. 30, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Investment in real estate ventures		$ 602,700	$ 552,494
Commerce Square Venture
Schedule of Equity Method Investments [Line Items]
Investment in real estate ventures	$ 23,000
Equity method investment, ownership percentage	84.00%
Impairment loss of real estate	$ 116,500

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - 4040 Wilson Venture (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Aug. 26, 2024
Schedule of Equity Method Investments [Line Items]
Payments to acquire investment			$ 143,751	$ 72,715
Other-than-temporary impairment	$ 6,833	$ 0	$ 6,833	$ 0
4040 Wilson Venture
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage					50.00%
Payments to acquire investment	190,500
Other-than-temporary impairment	$ 6,800

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - MAP Venture (Details)		3 Months Ended		9 Months Ended
	Jun. 28, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Jun. 28, 2024	Jun. 28, 2024 joint_venture	Jun. 28, 2024 property	Jun. 28, 2024 portfolioAsset	Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items]
Investment in real estate ventures		$ 602,700,000		$ 602,700,000							$ 552,494,000
Debt, net		2,261,773,000		2,261,773,000							$ 2,138,832,000
Net gain on real estate venture transactions		770,000	$ 0	54,503,000	$ 181,000
MAP Venture
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated joint ventures | joint_venture								1
Real estate investments, joint ventures, net	$ 52,200,000
Equity method investment, ownership percentage							50.00%
Investment in real estate ventures						$ 0
Number of office properties owned | property									57
Net gain on real estate venture transactions	53,800,000
MAP Venture | Funding For Tenant And Capital Improvement Of Properties
Schedule of Equity Method Investments [Line Items]
Other commitments		$ 12,000,000		$ 12,000,000
MAP Venture | Fixed rate debt
Schedule of Equity Method Investments [Line Items]
Debt instrument, interest rate, stated percentage		8.00%		8.00%
MAP Venture | Nonrecourse Mortgage Loan | Fixed rate debt
Schedule of Equity Method Investments [Line Items]
Debt, net	$ 154,600,000
MAP Venture | MAP Venture | Nonrecourse Mortgage Loan | Fixed rate debt
Schedule of Equity Method Investments [Line Items]
Basis spread on interest rate (as percent)	2.75%
Lender residual entitlement percentage							95.00%
KB Joint Venture
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage							50.00%
Investment in real estate ventures	$ 26,000,000
Number of properties contributed to joint venture									14	14

XML

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - KB Joint Venture (Details) $ in Thousands	Jun. 28, 2024 USD ($) ft²	Sep. 30, 2024 USD ($) ft²	Jun. 28, 2024	Jun. 28, 2024 property	Jun. 28, 2024 USD ($)	Jun. 28, 2024 portfolioAsset	Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items]
Investment in real estate ventures		$ 602,700					$ 552,494
Area of real estate property | ft²		12,489,806
KB Joint Venture
Schedule of Equity Method Investments [Line Items]
Number of properties contributed to joint venture				14		14
Investment in real estate ventures					$ 26,000
Area of real estate property | ft²	641,819
Equity method investment, ownership percentage			50.00%
KB Joint Venture | Loan With Related Party
Schedule of Equity Method Investments [Line Items]
Amount of transaction	$ 13,000

XML

LEASES - Schedule of Lease Income (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Leases [Abstract]
Fixed contractual payments	$ 91,844	$ 94,478	$ 276,050	$ 279,129
Variable lease payments	22,982	23,851	70,249	72,754
Total	$ 114,826	$ 118,329	$ 346,299	$ 351,883

XML

INTANGIBLE ASSETS AND LIABILITIES - Schedule of Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Intangible assets, net:
Total Cost	$ 17,297	$ 24,466
Accumulated Amortization	(11,048)	(16,772)
Intangible Assets, net	6,249	7,694
Intangible liabilities, net:
Total Cost	16,668	17,588
Accumulated Amortization	(9,110)	(9,318)
Intangible Liabilities, net	7,558	8,270
In-place lease value
Intangible assets, net:
Total Cost	17,112	24,281
Accumulated Amortization	(10,940)	(16,673)
Intangible Assets, net	6,172	7,608
Tenant relationship value
Intangible assets, net:
Total Cost	110	110
Accumulated Amortization	(56)	(52)
Intangible Assets, net	54	58
Above market leases acquired
Intangible assets, net:
Total Cost	75	75
Accumulated Amortization	(52)	(47)
Intangible Assets, net	$ 23	$ 28

XML

INTANGIBLE ASSETS AND LIABILITIES - Schedule of Amortization for Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Assets
2024 (three months remaining)	$ 373
2025	1,485
2026	1,093
2027	808
2028	313
Thereafter	2,177
Intangible Assets, net	6,249	$ 7,694
Liabilities
2024 (three months remaining)	217
2025	869
2026	739
2027	623
2028	534
Thereafter	4,576
Intangible Liabilities, net	$ 7,558	$ 8,270

XML

DEBT OBLIGATIONS - Schedule of Consolidated Debt Obligations Outstanding (Details) - USD ($)		1 Months Ended			9 Months Ended
	Apr. 15, 2024	Apr. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Sep. 30, 2024	Apr. 12, 2024	Jan. 16, 2024	Dec. 31, 2023	Nov. 23, 2022
Debt Instrument [Line Items]
Principal balance outstanding					$ 2,276,377,000
Plus: original issue premium (discount), net					(663,000)
Less: deferred financing costs					(13,941,000)
Debt, net					2,261,773,000			$ 2,138,832,000
Fixed rate debt
Debt Instrument [Line Items]
Principal balance outstanding					272,181,000			255,671,000
Less: deferred financing costs					(2,586,000)			(3,153,000)
Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.25%
Principal balance outstanding					2,001,610,000			1,888,610,000
Plus: original issue premium (discount), net					(663,000)			1,878,000
Less: deferred financing costs					(11,355,000)			(7,327,000)
Debt, net					1,989,592,000			1,883,161,000
$245.0M 5.88% Secured Term Loan due 2028 | Fixed rate debt
Debt Instrument [Line Items]
Debt instrument, face amount					$ 245,000,000.0
Debt instrument, interest rate, stated percentage					5.88%
Principal balance outstanding					$ 245,000,000			245,000,000
Effective interest rate					5.88%
$50.0M Construction Loan due 2026 | Fixed rate debt
Debt Instrument [Line Items]
Debt instrument, face amount					$ 50,000,000.0
Principal balance outstanding					$ 29,767,000			13,824,000
$50.0M Construction Loan due 2026 | Fixed rate debt | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Effective interest rate					2.50%
Principal balance outstanding | Fixed rate debt
Debt Instrument [Line Items]
Principal balance outstanding					$ 274,767,000			258,824,000
$600.0M Unsecured Credit Facility | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount					600,000,000.0
Principal balance outstanding					$ 40,000,000			0
Variable interest rate					1.40%
$600.0M Unsecured Credit Facility | Unsecured Debt | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Variable interest rate					1.50%
$600.0M Unsecured Credit Facility | Unsecured Debt | Daily SOFR Adjustment
Debt Instrument [Line Items]
Variable interest rate					0.10%
Term Loan - Swapped to fixed | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount									$ 250,000,000
Debt instrument, interest rate, stated percentage					5.41%
Principal balance outstanding					$ 250,000,000			250,000,000
Term Loan - Swapped to fixed | Unsecured Debt | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Variable interest rate					1.70%
Term Loan - Swapped to fixed | Unsecured Debt | Daily SOFR Adjustment
Debt Instrument [Line Items]
Variable interest rate					0.10%
$70.0M Term Loan | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount					$ 70,000,000.0
Principal balance outstanding					$ 70,000,000			70,000,000
$70.0M Term Loan | Unsecured Debt | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Variable interest rate					2.00%
$70.0M Term Loan | Unsecured Debt | Daily SOFR Adjustment
Debt Instrument [Line Items]
Variable interest rate					0.10%
$350.0M 4.10% Guaranteed Notes due 2024 | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount	$ 335,100,000				$ 350,000,000.0
Debt instrument, interest rate, stated percentage	4.10%				4.10%
Principal balance outstanding					$ 0			340,000,000
Effective interest rate					3.78%
Variable interest rate	0.00%
$450.0M 3.95% Guaranteed Notes due 2027 | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount					$ 450,000,000.0
Debt instrument, interest rate, stated percentage					3.95%
Principal balance outstanding					$ 450,000,000			450,000,000
Effective interest rate					4.03%
$350.0M 7.80% Guaranteed Notes due 2028 | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount					$ 350,000,000.0
Debt instrument, interest rate, stated percentage		8.30%	8.05%	7.55%	8.30%
Principal balance outstanding					$ 350,000,000			350,000,000
Effective interest rate					8.35%
Variable interest rate		0.25%	0.25%	0.25%
$350.0M 4.55% Guaranteed Notes due 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount					$ 350,000,000.0	$ 400,000,000
Debt instrument, interest rate, stated percentage					4.55%	8.875%
Principal balance outstanding					$ 350,000,000			350,000,000
Effective interest rate					4.30%
$400.0M 8.875% Guaranteed Notes due 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount					$ 400,000,000.0
Debt instrument, interest rate, stated percentage					8.875%
Principal balance outstanding					$ 400,000,000			0
Effective interest rate					8.97%
Indenture IA (Preferred Trust I) | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage							5.14%
Principal balance outstanding					$ 27,062,000			27,062,000
Indenture IA (Preferred Trust I) | Unsecured Debt | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Variable interest rate					1.51%
Indenture IB (Preferred Trust I) | Unsecured Debt
Debt Instrument [Line Items]
Principal balance outstanding					$ 25,774,000			25,774,000
Indenture IB (Preferred Trust I) | Unsecured Debt | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Variable interest rate					1.51%
Indenture II (Preferred Trust II) | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage							5.24%
Principal balance outstanding					$ 25,774,000			25,774,000
Indenture II (Preferred Trust II) | Unsecured Debt | Secured Overnight Financing Rate (SOFR)
Debt Instrument [Line Items]
Variable interest rate					1.51%
Note Payable | Unsecured Debt
Debt Instrument [Line Items]
Principal balance outstanding					$ 13,000,000			$ 0
Effective interest rate					4.66%

XML

DEBT OBLIGATIONS - Narrative (Details) - USD ($)			9 Months Ended
	Apr. 15, 2024	Apr. 12, 2024	Sep. 30, 2024	Sep. 30, 2023	Jun. 07, 2024
Debt Instrument [Line Items]
Proceeds from unsecured term loan			$ 13,000,000	$ 70,000,000
Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	4.25%
$600.0M Unsecured Credit Facility | Unsecured Debt
Debt Instrument [Line Items]
Maximum borrowing capacity (up to)			$ 600,000,000
Basis spread on interest rate (as percent)			1.40%
Weighted-average interest rate			6.90%
Interest expense borrowings			$ 1,400,000
Debt instrument, face amount			$ 600,000,000.0
$600.0M Unsecured Credit Facility | Unsecured Debt | Daily SOFR Adjustment
Debt Instrument [Line Items]
Basis spread on interest rate (as percent)			0.10%
$350.0M 4.55% Guaranteed Notes due 2029 | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount		$ 400,000,000	$ 350,000,000.0
Debt instrument, interest rate, stated percentage		8.875%	4.55%
Percentage of face amount		99.51%
Proceeds from unsecured term loan		$ 391,800,000
$350.0M 4.10% Guaranteed Notes due 2024 | Unsecured Debt
Debt Instrument [Line Items]
Basis spread on interest rate (as percent)	0.00%
Debt instrument, face amount	$ 335,100,000		$ 350,000,000.0
Debt instrument, interest rate, stated percentage	4.10%		4.10%
Redemption on remaining principal amount					$ 113,400,000

XML

DEBT OBLIGATIONS - Schedule of Aggregate Scheduled Principal Payments of Debt Obligation, Excluding Amortization of Discounts and Premiums (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Debt Disclosure [Abstract]
2024 (three months remaining)	$ 0
2025	70,000
2026	29,767
2027	753,000
2028	595,000
Thereafter	828,610
Total principal payments	2,276,377
Net unamortized premiums/(discounts)	(663)
Net deferred financing costs	(13,941)
Outstanding indebtedness	$ 2,261,773	$ 2,138,832

XML

FAIR VALUE OF FINANCIAL INSTRUMENTS - Schedule of Financial Instruments with Fair Values Different from their Carrying Amount (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed rate debt	$ 272,181	$ 255,671
Deferred financing costs, net	13,941
Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs, net	11,355	7,327
Fixed rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs, net	2,586	3,153
Carrying Amount | Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unsecured notes payable	1,552,185	1,486,052
Deferred financing costs, net	10,200	5,800
Carrying Amount | Variable rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Variable rate debt	467,174	410,932
Deferred financing costs, net	1,200	1,500
Carrying Amount | Fixed rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fixed rate debt	242,415	241,847
Deferred financing costs, net	2,600	3,200
Fair Value | Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	1,586,000	1,386,621
Fair Value | Variable rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	433,908	370,665
Fair Value | Fixed rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	$ 237,376	$ 233,088

XML

DERIVATIVE FINANCIAL INSTRUMENTS (Details) - USD ($)	Sep. 30, 2024	Dec. 31, 2023
Derivatives, Fair Value [Line Items]
Notional Amount	$ 328,610,000	$ 250,000,000
Interest Rate Swap, 3.279% | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Notional Amount	$ 250,000,000	250,000,000
Strike	3.729%
Fair value	$ (2,707,000)	(757,000)
Interest Rate Swap, 3.629% | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Notional Amount	$ 27,062,000	0
Strike	3.629%
Fair value	$ (420,000)	0
Interest Rate Swap, 3.725% | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Notional Amount	$ 51,548,000	0
Strike	3.725%
Fair value	$ (160,000)	$ 0

XML

LIMITED PARTNERS' NONCONTROLLING INTERESTS IN THE PARENT COMPANY (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Noncontrolling Interest [Abstract]
Aggregate amount related to non-controlling interests classified within equity	$ 3.3	$ 4.1
Settlement value of non controlling interest in operating partnership	$ 2.8	$ 2.8

XML

BENEFICIARIES' EQUITY OF THE PARENT COMPANY - Schedule of Earnings Per Share, Basic and Diluted (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator
Net loss	$ (165,720)	$ 30,267	$ (16,414)	$ (21,636)	$ (12,737)	$ (5,276)	$ (151,867)	$ (39,649)
Net loss attributable to noncontrolling interests, basic	500			82			452	140
Net loss attributable to noncontrolling interests, diluted	500			82			452	140
Nonforfeitable dividends allocated to unvested restricted shareholders, basic	(276)			(159)			(889)	(433)
Nonforfeitable dividends allocated to unvested restricted shareholders, diluted	(276)			(159)			(889)	(433)
Net loss attributable to common shareholders, basic	(165,496)			(21,713)			(152,304)	(39,942)
Net loss attributable to common shareholders, diluted	$ (165,496)			$ (21,713)			$ (152,304)	$ (39,942)
Denominator
Basic weighted average shares outstanding (in shares)	172,668,731			172,097,661			172,480,325	171,912,552
Weighted average shares outstanding, diluted (in shares)	172,668,731			172,097,661			172,480,325	171,912,552
Loss per Common Share:
Net loss attributable to common shareholders, basic (in dollars per share)	$ (0.96)			$ (0.13)			$ (0.88)	$ (0.23)
Net loss attributable to common shareholders, diluted (in dollars per share)	$ (0.96)			$ (0.13)			$ (0.88)	$ (0.23)

XML

BENEFICIARIES' EQUITY OF THE PARENT COMPANY - Narrative (Details) - USD ($)				3 Months Ended						9 Months Ended
	Oct. 24, 2024	Sep. 25, 2024	Dec. 19, 2023	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023	Jan. 03, 2019
Class of Stock [Line Items]
Units redeemed for cash (in shares)			872
Distributions declared (in dollars per share)				$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.19	$ 0.19
Dividends, common stock		$ 26,300,000
Authorized amount												$ 150,000,000.0
Repurchased and retired (in shares)										0	0
Distributions payable				$ 26,230,000			$ 26,027,000			$ 26,230,000	$ 26,027,000
Subsequent Event
Class of Stock [Line Items]
Dividends paid in cash (in dollars per share)	$ 0.15
Redeemable Common Limited Partnership Units
Class of Stock [Line Items]
Redeemable common limited partnership units (in shares)										515,595	516,467

XML

PARTNERS' EQUITY OF THE PARENT COMPANY - Schedule of Number of Units and Net Income Used to Calculate Basic and Diluted Earnings Per Common Partnership Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Numerator
Net loss	$ (165,720)	$ 30,267	$ (16,414)	$ (21,636)	$ (12,737)	$ (5,276)	$ (151,867)	$ (39,649)
Nonforfeitable dividends allocated to unvested restricted shareholders, basic	(276)			(159)			(889)	(433)
Nonforfeitable dividends allocated to unvested restricted unitholders, Diluted	$ (276)			$ (159)			$ (889)	$ (433)
Denominator
Weighted average units outstanding, basic (in shares)	172,668,731			172,097,661			172,480,325	171,912,552
Weighted average shares outstanding, diluted (in shares)	172,668,731			172,097,661			172,480,325	171,912,552
Loss per Common Partnership Unit:
Net loss attributable to common shareholders, basic (in dollars per share)	$ (0.96)			$ (0.13)			$ (0.88)	$ (0.23)
Net loss attributable to common shareholders, diluted (in dollars per share)	$ (0.96)			$ (0.13)			$ (0.88)	$ (0.23)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Numerator
Net loss	$ (165,720)	$ 30,267	$ (16,414)	$ (21,636)	$ (12,737)	$ (5,276)	$ (151,867)	$ (39,649)
Net loss attributable to noncontrolling interests	3			20			(3)	21
Nonforfeitable dividends allocated to unvested restricted shareholders, basic	(276)			(159)			(889)	(433)
Nonforfeitable dividends allocated to unvested restricted unitholders, Diluted	(276)			(159)			(889)	(433)
Net income (loss) attributable to common unitholders, basic	(165,993)			(21,775)			(152,759)	(40,061)
Net income (loss) attributable to common unitholders, diluted	$ (165,993)			$ (21,775)			$ (152,759)	$ (40,061)
Denominator
Weighted average units outstanding, basic (in shares)	173,184,325			172,614,128			172,995,920	172,429,019
Weighted average shares outstanding, diluted (in shares)	173,184,325			172,614,128			172,995,920	172,429,019
Loss per Common Partnership Unit:
Net loss attributable to common shareholders, basic (in dollars per share)	$ (0.96)			$ (0.13)			$ (0.88)	$ (0.23)
Net loss attributable to common shareholders, diluted (in dollars per share)	$ (0.96)			$ (0.13)			$ (0.88)	$ (0.23)

XML

PARTNERS' EQUITY OF THE PARENT COMPANY - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended						9 Months Ended
	Oct. 24, 2024	Sep. 25, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Earnings Per Common Partnership Unit [Line Items]
Distributions declared (in dollars per share)			$ 0.15	$ 0.15	$ 0.15	$ 0.15	$ 0.19	$ 0.19
Amount of dividend declared		$ 26.3
Repurchased and retired (in shares)									0	0
Subsequent Event
Earnings Per Common Partnership Unit [Line Items]
Dividends paid in cash (in dollars per share)	$ 0.15
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Earnings Per Common Partnership Unit [Line Items]
Distributions declared (in dollars per share)			$ 0.15
Amount of dividend declared		$ 0.1
Repurchase program, ratio of mirror unit of operating partnership retired for each common share repurchased									1
BRANDYWINE OPERATING PARTNERSHIP, L.P. | Subsequent Event
Earnings Per Common Partnership Unit [Line Items]
Dividends paid in cash (in dollars per share)	$ 0.15

XML

SEGMENT INFORMATION - Narrative (Details)	9 Months Ended
	Sep. 30, 2024 segment
Segment Reporting [Abstract]
Number of reportable segments	4

XML

SEGMENT INFORMATION - Schedule of Real Estate Investments, at Cost of Company's Reportable Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Segment Reporting Information [Line Items]
Operating properties	$ 3,409,605	$ 3,542,232
Right of use asset - operating leases, net	18,565	19,031
Construction-in-progress	166,278	135,529
Land held for development	78,259	82,510
Prepaid leasehold interests in land held for development, net	27,762	27,762
Continuing Operations
Segment Reporting Information [Line Items]
Operating properties	3,409,605	3,542,232
Total Core Segments | Continuing Operations
Segment Reporting Information [Line Items]
Operating properties	3,128,965	3,237,096
Philadelphia CBD | Continuing Operations
Segment Reporting Information [Line Items]
Operating properties	1,535,263	1,534,893
Pennsylvania Suburbs | Continuing Operations
Segment Reporting Information [Line Items]
Operating properties	803,267	900,230
Austin, Texas | Continuing Operations
Segment Reporting Information [Line Items]
Operating properties	790,435	801,973
Other | Continuing Operations
Segment Reporting Information [Line Items]
Operating properties	$ 280,640	$ 305,136

XML

SEGMENT INFORMATION - Schedule of Net Operating Income of Company's Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Total revenue	$ 131,782	$ 129,372	$ 383,612	$ 384,481
Operating expenses	(46,279)	(46,399)	(140,007)	(143,253)
Net operating income	85,503	82,973	243,605	241,228
Operating Segments | Philadelphia CBD
Segment Reporting Information [Line Items]
Total revenue	56,448	56,367	169,159	169,265
Operating expenses	(19,959)	(18,609)	(58,912)	(59,452)
Net operating income	36,489	37,758	110,247	109,813
Operating Segments | Pennsylvania Suburbs
Segment Reporting Information [Line Items]
Total revenue	31,681	32,611	95,366	97,484
Operating expenses	(10,081)	(9,770)	(29,337)	(29,633)
Net operating income	21,600	22,841	66,029	67,851
Operating Segments | Austin, Texas
Segment Reporting Information [Line Items]
Total revenue	21,951	24,457	67,360	73,475
Operating expenses	(8,429)	(10,044)	(26,276)	(30,021)
Net operating income	13,522	14,413	41,084	43,454
Operating Segments | Other
Segment Reporting Information [Line Items]
Total revenue	10,430	10,295	31,706	28,572
Operating expenses	(5,076)	(5,526)	(15,670)	(15,788)
Net operating income	5,354	4,769	16,036	12,784
Corporate
Segment Reporting Information [Line Items]
Total revenue	11,272	5,642	20,021	15,685
Operating expenses	(2,734)	(2,450)	(9,812)	(8,359)
Net operating income	$ 8,538	$ 3,192	$ 10,209	$ 7,326

XML

SEGMENT INFORMATION - Schedule of Unconsolidated Real Estate Ventures of Company's Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Segment Reporting Information [Line Items]
Investment in real estate ventures	$ 602,700		$ 602,700		$ 552,494
Equity in income (loss) of real estate ventures	(125,862)	$ (10,739)	(153,957)	$ (24,504)
Philadelphia CBD
Segment Reporting Information [Line Items]
Investment in real estate ventures	419,700		419,700		450,136
Equity in income (loss) of real estate ventures	(125,593)	(6,537)	(145,429)	(14,208)
Metropolitan Washington, D.C.
Segment Reporting Information [Line Items]
Investment in real estate ventures	86,666		86,666		71,931
Equity in income (loss) of real estate ventures	(6,915)	(1,306)	(8,608)	(3,896)
Mid-Atlantic Office JV
Segment Reporting Information [Line Items]
Investment in real estate ventures	10,925		10,925		0
Equity in income (loss) of real estate ventures	7,222	182	7,222	595
MAP Venture
Segment Reporting Information [Line Items]
Investment in real estate ventures	0		0		(48,733)
Equity in income (loss) of real estate ventures	10	(3,078)	(6,552)	(6,995)
Austin, Texas
Segment Reporting Information [Line Items]
Investment in real estate ventures	85,409		85,409		$ 79,160
Equity in income (loss) of real estate ventures	$ (586)	$ 0	$ (590)	$ 0

XML

SEGMENT INFORMATION - Schedule of Reconciliation of Consolidated Net Income to Consolidated NOI (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting [Abstract]
Net loss	$ (165,720)	$ 30,267	$ (16,414)	$ (21,636)	$ (12,737)	$ (5,276)	$ (151,867)	$ (39,649)
Plus:
Interest expense	30,561			24,355			85,104	70,677
Interest expense - amortization of deferred financing costs	1,247			1,110			3,753	3,251
Depreciation and amortization	44,301			48,966			133,530	141,645
General and administrative expenses	12,681			8,069			32,726	26,911
Equity in loss of unconsolidated real estate ventures	125,862			10,739			153,957	24,504
Provision for impairment	37,980			11,666			44,407	16,134
Gain on early extinguishment of debt	0			0			(941)	0
Less:
Investment income	639			293			2,572	1,318
Income tax benefit (provision)	0			3			(11)	(35)
Net gain on sale of undepreciated real estate	0			0			0	781
Net gain on real estate venture transactions	770			0			54,503	181
Consolidated net operating income	$ 85,503			$ 82,973			$ 243,605	$ 241,228

XML

COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	Sep. 30, 2024	Aug. 26, 2024	Jun. 30, 2024	Dec. 31, 2023	Jul. 23, 2021
Loss Contingencies [Line Items]
Investment in real estate ventures	$ 602,700,000			$ 552,494,000
Drexel Square
Loss Contingencies [Line Items]
Contractual obligation	5,600,000
Estimated potential additional contribution obligation	2,000,000.0
Preferred Equity Investment Obligation
Loss Contingencies [Line Items]
Contractual obligation	15,000,000
Commitment funded amount	2,500,000
3151 Market Street
Loss Contingencies [Line Items]
Investment in real estate ventures	316,900,000
3151 Market Street | Scenario, Plan
Loss Contingencies [Line Items]
Debt instrument, face amount	$ 174,300,000
Loan to value ratio	55.00%
Affiliated Entity | 3025 JFK Venture
Loss Contingencies [Line Items]
Construction loan					$ 186,700,000
3025 JFK Venture
Loss Contingencies [Line Items]
Limited payment guarantee, percent of principle balance (up to)					25.00%
One Uptown Venture | Carry Guarantee
Loss Contingencies [Line Items]
Limited payment guarantee, percent of principle balance (up to)					30.00%
Construction loan amount					$ 121,700,000
One Uptown Venture | Payment Guarantee
Loss Contingencies [Line Items]
Limited payment guarantee, percent of principle balance (up to)					15.00%
Construction loan amount					$ 85,000,000
Unconsolidated Real Estate Ventures
Loss Contingencies [Line Items]
Unconsolidated real estate venture debt at 100%, gross	$ 890,800,000
MAP Venture
Loss Contingencies [Line Items]
Investment in real estate ventures			$ 0
MAP Venture | Fixed rate debt
Loss Contingencies [Line Items]
Debt instrument, interest rate, stated percentage	8.00%
MAP Venture | Additional Funding For Tenant And Capital Improvement Of Properties
Loss Contingencies [Line Items]
Other commitments	$ 12,000,000
Commerce Square Venture
Loss Contingencies [Line Items]
Investment in real estate ventures		$ 23,000,000