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 June 30, 2023

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 172,097,661 Common Shares of Beneficial Interest, par value $0.01 per share of Brandywine Realty Trust, were outstanding as of July 24, 2023.

EXPLANATORY NOTE

This report combines the quarterly reports on Form 10-Q for the period ended June 30, 2023 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 June 30, 2023, 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.

To help investors understand the significant 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:

2

•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	5
Consolidated Balance Sheets as of June 30, 2023 and December 31, 2022	5
Consolidated Statements of Operations for the six months ended June 30, 2023 and 2022	6
Consolidated Statements of Comprehensive Income for the six months ended June 30, 2023 and 2022	7
Consolidated Statements of Beneficiaries’ Equity for the six months ended June 30, 2023 and 2022	8
Consolidated Statements of Cash Flows for the six months ended June 30, 2023 and 2022	10
Brandywine Operating Partnership, L.P.
Financial Statements of Brandywine Operating Partnership, L.P.	11
Consolidated Balance Sheets as of June 30, 2023 and December 31, 2022	11
Consolidated Statements of Operations for the six months ended June 30, 2023 and 2022	12
Consolidated Statements of Comprehensive Income for the six months ended June 30, 2023 and 2022	13
Consolidated Statements of Partners’ Equity for the six months ended June 30, 2023 and 2022	14
Consolidated Statements of Cash Flows for the six months ended June 30, 2023 and 2022	16
Notes to Unaudited Consolidated Financial Statements	17
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	31
Item 3. Quantitative and Qualitative Disclosures about Market Risk	46
Item 4. Controls and Procedures	47
PART II — OTHER INFORMATION	48
Item 1. Legal Proceedings	48
Item 1A. Risk Factors	48
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	48
Item 3. Defaults Upon Senior Securities	48
Item 4. Mine Safety Disclosures	48
Item 5. Other Information	48
Item 6. Exhibits	49
Signatures	50

Filing Format

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

4

PART I - FINANCIAL INFORMATION

Item 1. — Financial Statements

BRANDYWINE REALTY TRUST

CONSOLIDATED BALANCE SHEETS

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

	June 30, 2023		December 31, 2022
ASSETS
Real estate investments:
Operating properties	$	3,597,211	$	3,617,240
Accumulated depreciation	(1,125,145)		(1,063,060)
Right of use asset - operating leases, net	19,346		19,664
Operating real estate investments, net	2,491,412		2,573,844
Construction-in-progress	245,677		218,869
Land held for development	71,493		76,499
Prepaid leasehold interests in land held for development, net	27,762		35,576
Total real estate investments, net	2,836,344		2,904,788
Assets held for sale, net	52,664		—
Cash and cash equivalents	32,111		17,551
Restricted cash and escrows	10,876		—
Accounts receivable	11,654		11,003
Accrued rent receivable, net of allowance of $3,778 and $3,947 as of June 30, 2023 and December 31, 2022, respectively	183,191		179,771
Investment in unconsolidated real estate ventures	630,505		567,635
Deferred costs, net	95,102		96,639
Intangible assets, net	11,676		18,451
Other assets	90,362		78,667
Total assets	$	3,954,485	$	3,874,505
LIABILITIES AND BENEFICIARIES' EQUITY
Secured term loan, net	$	241,383	$	—
Unsecured credit facility	—		88,500
Unsecured term loan, net	318,065		248,168
Unsecured senior notes, net	1,574,373		1,628,370
Accounts payable and accrued expenses	116,913		132,440
Distributions payable	32,957		32,792
Deferred income, gains and rent	24,786		25,082
Intangible liabilities, net	8,811		10,322
Liabilities related to assets held for sale, net	1,041		—
Lease liability - operating leases	23,268		23,166
Other liabilities	56,228		52,331
Total liabilities	$	2,397,825	$	2,241,171
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; 172,101,929 and 171,569,807 issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	1,719		1,716
Additional paid-in-capital	3,159,276		3,153,229
Deferred compensation payable in common shares	19,965		19,601
Common shares in grantor trust, 1,207,415 and 1,179,643 issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	(19,965)		(19,601)
Cumulative earnings	1,158,240		1,176,195
Accumulated other comprehensive income	5,216		3,897
Cumulative distributions	(2,775,124)		(2,709,405)
Total Brandywine Realty Trust's equity	1,549,327		1,625,632
Noncontrolling interests	7,333		7,702
Total beneficiaries' equity	$	1,556,660	$	1,633,334
Total liabilities and beneficiaries' equity	$	3,954,485	$	3,874,505

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

5

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF OPERATIONS

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Revenue
Rents	$	118,133	$	116,897	$	238,981	$	232,798
Third party management fees, labor reimbursement and leasing	6,227		5,924		12,229		11,032
Other	1,522		1,221		3,899		7,717
Total revenue	125,882		124,042		255,109		251,547
Operating expenses
Property operating expenses	31,891		33,111		65,485		64,659
Real estate taxes	11,571		13,746		26,173		27,559
Third party management expenses	2,557		2,792		5,196		5,349
Depreciation and amortization	47,079		43,959		92,679		87,741
General and administrative expenses	9,360		8,328		18,842		18,328
Provision for impairment	4,468		—		4,468		—
Total operating expenses	106,926		101,936		212,843		203,636
Gain on sale of real estate
Net gain on disposition of real estate	—		144		—		144
Net gain on sale of undepreciated real estate	—		4,127		781		5,024
Total gain on sale of real estate	—		4,271		781		5,168
Operating income	18,956		26,377		43,047		53,079
Other income (expense):
Interest income	520		449		1,025		889
Interest expense	(23,669)		(16,341)		(46,322)		(32,083)
Interest expense - amortization of deferred financing costs	(1,114)		(805)		(2,141)		(1,514)
Equity in loss of unconsolidated real estate ventures	(7,598)		(4,981)		(13,765)		(9,544)
Net gain on real estate venture transactions	181		—		181		—
Net income (loss) before income taxes	(12,724)		4,699		(17,975)		10,827
Income tax provision	(13)		(48)		(38)		(75)
Net income (loss)	(12,737)		4,651		(18,013)		10,752
Net (income) loss attributable to noncontrolling interests	41		(14)		58		(22)
Net income (loss) attributable to Brandywine Realty Trust	(12,696)		4,637		(17,955)		10,730
Nonforfeitable dividends allocated to unvested restricted shareholders	(204)		(98)		(274)		(246)
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust	$	(12,900)	$	4,539	$	(18,229)	$	10,484
Basic income (loss) per Common Share	$	(0.08)	$	0.03	$	(0.11)	$	0.06
Diluted income (loss) per Common Share	$	(0.08)	$	0.03	$	(0.11)	$	0.06
Basic weighted average shares outstanding	171,962,162		171,527,031		171,818,463		171,411,631
Diluted weighted average shares outstanding	171,962,162		172,260,429		171,818,463		172,575,408

 

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

6

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited, in thousands)

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Net income (loss)	$	(12,737)	$	4,651	$	(18,013)	$	10,752
Comprehensive income:
Unrealized gain on derivative financial instruments	6,646		1,747		1,355		5,511
Amortization of interest rate contracts (1)	—		188		—		376
Total comprehensive income	6,646		1,935		1,355		5,887
Comprehensive income (loss)	(6,091)		6,586		(16,658)		16,639
Comprehensive (income) loss attributable to noncontrolling interest	21		(20)		22		(40)
Comprehensive income (loss) attributable to Brandywine Realty Trust	$	(6,070)	$	6,566	$	(16,636)	$	16,599

(1)Amounts reclassified from comprehensive income to interest expense within the Consolidated Statements of Operations.

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

7

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, 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 income											(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

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

8

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, 2021	171,126,257	1,169,703	$	1,712	$	3,146,786	$	18,491	$	(18,491)	$	1,122,372	$	(2,020)	$	(2,578,583)	$	10,952	$	1,701,219
Net income											6,093						8		6,101
Other comprehensive income													3,940				12		3,952
Redemption of LP Units																	(4,006)		(4,006)
Share-based compensation activity	277,061	68,540	2		1,653														1,655
Share Issuance from/(to) Deferred Compensation Plan	(19,406)	(52,702)			(249)		895		(895)										(249)
Reallocation of Noncontrolling interest					(959)												959		—
Distributions declared ($0.38 per share)															(32,711)		(98)		(32,809)
BALANCE, March 31, 2022	171,383,912	1,185,541	$	1,714	$	3,147,231	$	19,386	$	(19,386)	$	1,128,465	$	1,920	$	(2,611,294)	$	7,827	$	1,675,863
Net loss											4,637						14		4,651
Other comprehensive income													1,929				6		1,935
Share-based compensation activity	191,368	16,844	2		1,915														1,917
Share Issuance from/(to) Deferred Compensation Plan							215		(215)										—
Distributions declared ($0.19 per share)															(32,705)		(98)		(32,803)
BALANCE, June 30, 2022	171,575,280	1,202,385	$	1,716	$	3,149,146	$	19,601	$	(19,601)	$	1,133,102	$	3,849	$	(2,643,999)	$	7,749	$	1,651,563

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

9

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands) 

	Six Months Ended June 30,
	2023		2022
Cash flows from operating activities:
Net income (loss)	$	(18,013)	$	10,752
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	92,679		87,741
Amortization of deferred financing costs	2,141		1,514
Amortization of debt discount/(premium), net	(516)		(975)
Amortization of stock compensation costs	6,073		5,419
Straight-line rent income	(4,600)		(5,042)
Amortization of acquired above (below) market leases, net	(760)		(1,664)
Ground rent expense	401		408
Net gain on real estate venture transactions	(181)		—
Total gain on sale of real estate	(781)		(5,168)
Provision for impairment	4,468		—
Loss from unconsolidated real estate ventures, including income distributions	13,765		9,544
Income tax provision	38		75
Changes in assets and liabilities:
Accounts receivable	(469)		(1,254)
Other assets	(12,604)		(2,711)
Accounts payable and accrued expenses	(21,271)		(19,484)
Deferred income, gains and rent	285		(2,487)
Other liabilities	649		1,826
Net cash provided by operating activities	61,304		78,494
Cash flows from investing activities:
Acquisition of properties	—		(3,446)
Proceeds from the sale of properties	—		34,146
Capital expenditures for tenant improvements	(24,431)		(35,545)
Capital expenditures for redevelopments	(34,827)		(56,472)
Capital expenditures for developments	(18,341)		(82,252)
Advances for the purchase of tenant assets, net of repayments	(26)		(447)
Investment in unconsolidated real estate ventures	(60,290)		(27,807)
Deposits for real estate	3,500		(7,550)
Capital distributions from unconsolidated real estate ventures	2,250		5,720
Leasing costs paid	(5,697)		(15,209)
Net cash used in investing activities	(137,862)		(188,862)
Cash flows from financing activities:
Proceeds from credit facility borrowings	136,000		196,000
Repayments of credit facility borrowings	(224,500)		(5,000)
Repayments of unsecured notes	(54,301)		—
Proceeds from unsecured term loan	70,000		—
Proceeds from secured term loan	245,000		—
Debt financing costs paid	(4,455)		(6,641)
Shares used for employee taxes upon vesting of share awards	(952)		(2,935)
Redemption of limited partnership units	—		(4,006)
Distributions paid to shareholders	(65,438)		(65,315)
Distributions to noncontrolling interest	(196)		(255)
Net cash provided by financing activities	101,158		111,848
Increase in cash and cash equivalents and restricted cash	24,600		1,480
Cash and cash equivalents and restricted cash at beginning of period	18,387		28,300
Cash and cash equivalents and restricted cash at end of period	$	42,987	$	29,780
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	$	17,551	$	27,463
Restricted cash, beginning of period	836		837
Cash and cash equivalents and restricted cash, beginning of period	$	18,387	$	28,300
Cash and cash equivalents, end of period	$	32,111	$	28,849
Restricted cash, end of period	10,876		931
Cash and cash equivalents and restricted cash, end of period	$	42,987	$	29,780
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the six months ended June 30, 2023 and 2022 of $8,587 and $4,442, respectively	$	50,480	$	37,961
Cash paid for income taxes	550		902
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,957		32,800
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 other assets as a result of investing activities	—		13,396
Change in capital expenditures financed through accounts payable at period end	1,292		10,283
Change in capital expenditures financed through retention payable at period end	2,039		(1,097)

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

10

BRANDYWINE OPERATING PARTNERSHIP, L.P.

CONSOLIDATED BALANCE SHEETS

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

	June 30, 2023		December 31, 2022
ASSETS
Real estate investments:
Operating properties	$	3,597,211	$	3,617,240
Accumulated depreciation	(1,125,145)		(1,063,060)
Right of use asset - operating leases, net	19,346		19,664
Operating real estate investments, net	2,491,412		2,573,844
Construction-in-progress	245,677		218,869
Land held for development	71,493		76,499
Prepaid leasehold interests in land held for development, net	27,762		35,576
Total real estate investments, net	2,836,344		2,904,788
Assets held for sale, net	52,664		—
Cash and cash equivalents	32,111		17,551
Restricted cash and escrows	10,876		—
Accounts receivable	11,654		11,003
Accrued rent receivable, net of allowance of $3,778 and $3,947 as of June 30, 2023 and December 31, 2022, respectively	183,191		179,771
Investment in unconsolidated real estate ventures	630,505		567,635
Deferred costs, net	95,102		96,639
Intangible assets, net	11,676		18,451
Other assets	90,362		78,667
Total assets	$	3,954,485	$	3,874,505
LIABILITIES AND PARTNERS' EQUITY
Mortgage notes payable, net	$	241,383	$	—
Unsecured credit facility	—		88,500
Unsecured term loan, net	318,065		248,168
Unsecured senior notes, net	1,574,373		1,628,370
Accounts payable and accrued expenses	116,913		132,440
Distributions payable	32,957		32,792
Deferred income, gains and rent	24,786		25,082
Intangible liabilities, net	8,811		10,322
Liabilities related to assets held for sale, net	1,041		—
Lease liability - operating leases	23,268		23,166
Other liabilities	56,228		52,331
Total liabilities	$	2,397,825	$	2,241,171
Commitments and contingencies (See Note 14)
Redeemable limited partnership units at redemption value; 516,467 and 516,467 issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	2,318		3,195
Brandywine Operating Partnership, L.P.'s equity:
General Partnership Capital; $172,101,929 and 171,569,807 units issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	1,546,587		1,623,738
Accumulated other comprehensive income	4,924		3,569
Total Brandywine Operating Partnership, L.P.'s equity	1,551,511		1,627,307
Noncontrolling interest - consolidated real estate ventures	2,831		2,832
Total partners' equity	$	1,554,342	$	1,630,139
Total liabilities and partners' equity	$	3,954,485	$	3,874,505

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

11

BRANDYWINE OPERATING PARTNERSHIP, L.P.

CONSOLIDATED STATEMENTS OF OPERATIONS

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

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Revenue
Rents	$	118,133	$	116,897	$	238,981	$	232,798
Third party management fees, labor reimbursement and leasing	6,227		5,924		12,229		11,032
Other	1,522		1,221		3,899		7,717
Total revenue	125,882		124,042		255,109		251,547
Operating expenses
Property operating expenses	31,891		33,111		65,485		64,659
Real estate taxes	11,571		13,746		26,173		27,559
Third party management expenses	2,557		2,792		5,196		5,349
Depreciation and amortization	47,079		43,959		92,679		87,741
General and administrative expenses	9,360		8,328		18,842		18,328
Provision for impairment	4,468		—		4,468		—
Total operating expenses	106,926		101,936		212,843		203,636
Gain on sale of real estate
Net gain on disposition of real estate	—		144		—		144
Net gain on sale of undepreciated real estate	—		4,127		781		5,024
Total gain on sale of real estate	—		4,271		781		5,168
Operating income	18,956		26,377		43,047		53,079
Other income (expense):
Interest income	520		449		1,025		889
Interest expense	(23,669)		(16,341)		(46,322)		(32,083)
Interest expense - amortization of deferred financing costs	(1,114)		(805)		(2,141)		(1,514)
Equity in loss of unconsolidated real estate ventures	(7,598)		(4,981)		(13,765)		(9,544)
Net gain on real estate venture transactions	181		—		181		—
Net income (loss) before income taxes	(12,724)		4,699		(17,975)		10,827
Income tax provision	(13)		(48)		(38)		(75)
Net income (loss)	(12,737)		4,651		(18,013)		10,752
Net loss attributable to noncontrolling interests - consolidated real estate ventures	—		2		1		4
Net income (loss) attributable to Brandywine Operating Partnership	(12,737)		4,653		(18,012)		10,756
Nonforfeitable dividends allocated to unvested restricted unitholders	(204)		(98)		(274)		(246)
Net income (loss) attributable to Common Partnership Unitholders of Brandywine Operating Partnership, L.P.	$	(12,941)	$	4,555	$	(18,286)	$	10,510
Basic income (loss) per Common Partnership Unit	$	(0.08)	$	0.03	$	(0.11)	$	0.06
Diluted income (loss) per Common Partnership Unit	$	(0.08)	$	0.03	$	(0.11)	$	0.06
Basic weighted average common partnership units outstanding	172,478,629		172,043,498		172,334,930		171,985,863
Diluted weighted average common partnership units outstanding	172,478,629		172,776,896		172,334,930		173,149,640

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

12

BRANDYWINE OPERATING PARTNERSHIP, L.P.

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(unaudited, in thousands)

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Net income (loss)	$	(12,737)	$	4,651	$	(18,013)	$	10,752
Comprehensive income:
Unrealized gain on derivative financial instruments	6,646		1,747		1,355		5,511
Amortization of interest rate contracts (1)	—		188		—		376
Total comprehensive income	6,646		1,935		1,355		5,887
Comprehensive income (loss)	(6,091)		6,586		(16,658)		16,639
Comprehensive loss attributable to noncontrolling interest - consolidated real estate ventures	—		2		1		4
Comprehensive income (loss) attributable to Brandywine Operating Partnership	$	(6,091)	$	6,588	$	(16,657)	$	16,643

(1)Amounts reclassified from comprehensive income to interest expense within the Consolidated Statements of Operations.

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

13

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, 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)
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 income (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

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

14

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, 2021	171,126,257	$	1,689,611	$	(2,366)	$	2,834	$	1,690,079
Net income		6,103				(2)		6,101
Other comprehensive loss				3,952				3,952
Deferred compensation obligation	(19,406)	(249)						(249)
Repurchase and retirement of LP units		(4,006)						(4,006)
Share-based compensation activity	277,061	1,655						1,655
Adjustment of redeemable partnership units to liquidation value at period end		3,704						3,704
Distributions declared to general partnership unitholders ($0.19 per unit)		(32,711)						(32,711)
BALANCE, March 31, 2022	171,383,912	$	1,664,107	$	1,586	$	2,832	$	1,668,525
Net loss		4,653				(2)		4,651
Other comprehensive income				1,935				1,935
Issuance of partnership interest in consolidated real estate ventures	191,368	1,917						1,917
Share-based compensation activity		2,181						2,181
Adjustment of redeemable partnership units to liquidation value at period end		(32,705)						(32,705)
Distributions declared to general partnership unitholders ($0.19 per unit)								—
BALANCE, June 30, 2022	171,575,280	$	1,640,153	$	3,521	$	2,830	$	1,646,504

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

15

BRANDYWINE OPERATING PARTNERSHIP L.P.

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands) 

	Six Months Ended June 30,
	2023		2022
Cash flows from operating activities:
Net income (loss)	$	(18,013)	$	10,752
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	92,679		87,741
Amortization of deferred financing costs	2,141		1,514
Amortization of debt discount/(premium), net	(516)		(975)
Amortization of stock compensation costs	6,073		5,419
Straight-line rent income	(4,600)		(5,042)
Amortization of acquired above (below) market leases, net	(760)		(1,664)
Ground rent expense	401		408
Net gain on real estate venture transactions	(181)		—
Total gain on sale of real estate	(781)		(5,168)
Provision for impairment	4,468		—
Loss from unconsolidated real estate ventures, including income distributions	13,765		9,544
Income tax provision	38		75
Changes in assets and liabilities:
Accounts receivable	(469)		(1,254)
Other assets	(12,604)		(2,711)
Accounts payable and accrued expenses	(21,271)		(19,484)
Deferred income, gains and rent	285		(2,487)
Other liabilities	649		1,826
Net cash provided by operating activities	61,304		78,494
Cash flows from investing activities:
Acquisition of properties	—		(3,446)
Proceeds from the sale of properties	—		34,146
Capital expenditures for tenant improvements	(24,431)		(35,545)
Capital expenditures for redevelopments	(34,827)		(56,472)
Capital expenditures for developments	(18,341)		(82,252)
Advances for the purchase of tenant assets, net of repayments	(26)		(447)
Investment in unconsolidated real estate ventures	(60,290)		(27,807)
Deposits for real estate	3,500		(7,550)
Capital distributions from unconsolidated real estate ventures	2,250		5,720
Leasing costs paid	(5,697)		(15,209)
Net cash used in investing activities	(137,862)		(188,862)
Cash flows from financing activities:
Proceeds from credit facility borrowings	136,000		196,000
Repayments of credit facility borrowings	(224,500)		(5,000)
Repayments of unsecured notes	(54,301)		—
Proceeds from unsecured term loan	70,000		—
Proceeds from secured term loan	245,000		—
Debt financing costs paid	(4,455)		(6,641)
Shares used for employee taxes upon vesting of share awards	(952)		(2,935)
Redemption of limited partnership units	—		(4,006)
Distributions paid to preferred and common partnership units	(65,634)		(65,570)
Net cash provided by financing activities	101,158		111,848
Increase in cash and cash equivalents and restricted cash	24,600		1,480
Cash and cash equivalents and restricted cash at beginning of period	18,387		28,300
Cash and cash equivalents and restricted cash at end of period	$	42,987	$	29,780
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	$	17,551	$	27,463
Restricted cash, beginning of period	836		837
Cash and cash equivalents and restricted cash, beginning of period	$	18,387	$	28,300
Cash and cash equivalents, end of period	$	32,111	$	28,849
Restricted cash, end of period	10,876		931
Cash and cash equivalents and restricted cash, end of period	$	42,987	$	29,780
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the six months ended June 30, 2023 and 2022 of $8,587 and $4,442, respectively	$	50,480	$	37,961
Cash paid for income taxes	550		902
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,957		32,800
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 other assets as a result of investing activities	—		13,396
Change in capital expenditures financed through accounts payable at period end	1,292		10,283
Change in capital expenditures financed through retention payable at period end	2,039		(1,097)

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

16

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 June 30, 2023, 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 June 30, 2023, the Company owned 76 properties that contained an aggregate of approximately 13.4 million net rentable square feet (collectively, the “Properties”). The Company’s core portfolio of operating properties (the “Core Properties”) excludes development properties, redevelopment properties, and properties held for sale. The Properties were comprised of the following as of June 30, 2023:

	Number of Properties	Rentable Square Feet
Office properties	67	11,881,208
Mixed-use properties	5	942,334
Core Properties	72	12,823,542
Development property	2	350,488
Redevelopment properties	2	230,856
The Properties	76	13,404,886

In addition to the Properties, as of June 30, 2023, the Company owned 152.1 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 55.1 additional acres of undeveloped land.  As of June 30, 2023, 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 11.8 million net rentable square feet.

As of June 30, 2023, the Company also owned economic interests in twelve 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 June 30, 2023, the management company subsidiaries were managing properties containing an aggregate of approximately 22.8 million net rentable square feet, of which approximately 13.4 million net rentable square feet related to Properties owned by the Company and approximately 9.4 million net rentable square feet related to properties owned by third parties and unconsolidated real estate ventures.

Unless otherwise indicated, all references in this Form 10-Q to 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 June 30, 2023, the results of its operations for the three and six months ended June 30, 2023 and 2022 and its cash flows for the six months ended June 30, 2023 and 2022. 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, 2022 filed with the SEC on February 21, 2023.

The consolidated balance sheet at December 31, 2022 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.

17

The Company’s Annual Report on Form 10-K for the year ended December 31, 2022 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, 2022.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“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. Actual results could differ from those estimates. The estimates and assumptions include, but are not limited to, common development cost estimates for the Company’s contributions to development joint ventures. The common development cost estimates for development joint venture contributions are highly judgmental, covering significant future time horizons and are sensitive to cost escalation, sales price escalation and absorption, which are affected by expectations about future market or economic conditions. Actual results could differ from these and other estimates.

3. REAL ESTATE INVESTMENTS

As of June 30, 2023 and December 31, 2022, the gross carrying value of the operating properties was as follows (in thousands):

	June 30, 2023		December 31, 2022
Land	$	398,536	$	403,998
Building and improvements	2,725,168		2,760,357
Tenant improvements	473,507		452,885
Operating properties	$	3,597,211	$	3,617,240
Assets held for sale - real estate investments	52,664		—
Total	$	3,649,875	$	3,617,240

Dispositions

During the first quarter of 2023, the Company deconsolidated $7.8 million recorded in “Prepaid leasehold interests in land held for development, net” on the consolidated balance sheets. This deconsolidation reflects the Company’s contribution, in January 2023, of 200,000 square feet of buildable floor to area ratio (“FAR”) to the Company’s unconsolidated real estate venture, referred to in Note 4 below as the 3151 Market Street Venture, for use by this unconsolidated real estate venture in the development of 3151 Market Street. Upon contribution at fair market value, we recognized a gain, net of transaction costs, of $0.8 million in “Net gain on sale of undepreciated real estate” on the consolidated statements of operations.

Held-for-sale

As of June 30, 2023, the Company was under an agreement to sell to an unaffiliated third party an office property located in the Austin, Texas segment for $53.3 million and has classified the property as held for sale on the consolidated balance sheets. As of June 30, 2023, the carrying value of the of the property was in excess of the fair value less cost to sell. As a result, an impairment loss of $4.5 million was recognized. The estimated fair value is considered Level 3 in accordance with ASC 820 and was based upon the executed agreement of sale. Consummation of the sale is subject to closing conditions and there can be no assurance that the sale will be consummated on expected terms, or at all.

The following is a summary of the property classified as held for sale as of June 30, 2023 (in thousands):

18

	Held for Sale Properties (a)
	June 30, 2023
ASSETS HELD FOR SALE
Real estate investments:
Operating properties	$	54,701
Accumulated depreciation	(5,388)
Operating real estate investments, net	49,313
Construction-in-progress	370
Total real estate investments, net	49,683
Deferred costs, net	339
Intangible assets, net	1,755
Accrued Rent Receivable	790
Other assets	97
Total assets held for sale, net	$	52,664
LIABILITIES HELD FOR SALE
Mortgage notes payable, net
Deferred income, gains and rent	383
Intangible liabilities, net	658
Total liabilities held for sale, net	$	1,041

4. INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

As of June 30, 2023, the Company held ownership interests in twelve unconsolidated real estate ventures, with a net aggregate investment balance of $589.2 million, which includes a negative investment balance in one unconsolidated real estate venture of $41.3 million, reflected within “Other liabilities” on the consolidated balance sheets. As of June 30, 2023, five of the real estate ventures owned properties that contained an aggregate of approximately 9.1 million net rentable square feet of office space; two real estate ventures owned 1.4 acres of land held for development; four real estate ventures owned 7.5 acres of land in active development; one real estate venture 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 15% to 78%, using the equity method. Certain of the unconsolidated real estate ventures are subject to specified priority allocations of distributable cash.

The Company earned management fees from the unconsolidated real estate ventures of $2.1 million for both the three months ended June 30, 2023 and 2022, and $4.2 million and $4.0 million for the six months ended June 30, 2023 and 2022, respectively.

The Company earned leasing commissions from the unconsolidated real estate ventures of $0.8 million for both the three months ended June 30, 2023 and 2022, and $1.5 million and $1.1 million for the six months ended June 30, 2023 and 2022, respectively.

The Company had outstanding accounts receivable balances from the unconsolidated real estate ventures of $3.1 million and $2.9 million for both June 30, 2023 and December 31, 2022, 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 June 30, 2023 and December 31, 2022 (in thousands):

19

	June 30, 2023		December 31, 2022
Net property	$	2,262,891	$	2,117,226
Other assets	540,399		506,213
Other liabilities	448,432		446,101
Debt, net	1,335,323		1,198,213
Equity (a)	1,019,535		979,125

(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.

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 six-month periods ended June 30, 2023 and 2022 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Revenue	$	59,067	$	64,957	$	116,953	$	118,173
Operating expenses	(30,039)		(31,671)		(58,890)		(60,263)
Interest expense, net	(18,287)		(11,663)		(34,178)		(19,132)
Depreciation and amortization	(24,827)		(27,927)		(49,001)		(49,210)
Net loss	$	(14,086)	$	(6,304)	$	(25,116)	$	(10,432)
Ownership interest %	Various		Various		Various		Various
Company's share of net loss	$	(7,528)	$	(4,822)	$	(13,652)	$	(9,439)
Basis adjustments and other	(70)		(159)		(113)		(105)
Equity in loss of unconsolidated real estate ventures	$	(7,598)	$	(4,981)	$	(13,765)	$	(9,544)

Commerce Square Venture

The properties held by the Commerce Square Venture were encumbered by secured mortgage loans that were set to mature on April 5, 2023. The lender provided the venture with an extension of the maturity date of these loans until June 5, 2023. On June 2, 2023, the loans were refinanced through a new $220.0 million secured mortgage loan facility. The new loan bears an all-in fixed interest rate of 7.79% per annum and matures in June 2028.

In connection with the refinancing, the Company contributed $46.5 million to the venture in exchange for an additional 8% equity interest in the venture.

MAP Venture

The MAP Venture owns 58 office properties that contain an aggregate of 3,924,783 square feet located in the Pennsylvania Suburbs, New Jersey/Delaware, Metropolitan Washington, D.C. and Richmond, Virginia (the “MAP Venture”). The MAP Venture leases the land parcels under the 58 office properties through a ground lease that extends through February 2115. The properties held by the MAP Venture are encumbered by a mortgage on the MAP Venture's leasehold interest in the buildings ("MAP Collateral") and the assignment of the related rents and leases and is nonrecourse to the Company. At June 30 2023, the mortgage balance is $181.0 million, and has a maturity date of August 1, 2023. On July 26, 2023, the lender provided the MAP Venture with an extension until October 1, 2023. The Company and its partner are actively working to recapitalize the MAP Venture and the mortgage debt prior to maturity, but there can be no assurances that the debt will be satisfied or additional extension options will be provided by the existing lender. At June 30, 2023, the Company's negative investment balance was $41.3 million. The Company has no obligation to fund additional equity to the MAP Venture.

20

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 six months ended June 30, 2023 and 2022 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
Lease Revenue	2023		2022		2023		2022
Fixed contractual payments	$	92,969	$	88,672	$	184,651	$	177,435
Variable lease payments	22,335		25,234		48,850		49,565
Total	$	115,304	$	113,906	$	233,501	$	227,000

6. INTANGIBLE ASSETS AND LIABILITIES

As of June 30, 2023 and December 31, 2022, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	June 30, 2023
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	44,325	$	(32,746)	$	11,579
Tenant relationship value	110		(50)		60
Above market leases acquired	178		(141)		37
Total intangible assets, net	$	44,613	$	(32,937)	$	11,676
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	18,230	$	(9,419)	$	8,811

	December 31, 2022
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	55,715	$	(37,437)	$	18,278
Tenant relationship value	167		(104)		63
Above market leases acquired	331		(221)		110
Total intangible assets, net	$	56,213	$	(37,762)	$	18,451
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	20,985	$	(10,663)	$	10,322

As of June 30, 2023, the Company’s annual amortization for its intangible assets/liabilities, assuming no prospective early lease terminations, was as follows (dollars in thousands):

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	Assets		Liabilities
2023 (six months remaining)	$	4,496	$	730
2024	2,786		1,299
2025	1,905		1,023
2026	1,093		739
2027	808		623
Thereafter	588		4,397
Total	$	11,676	$	8,811

7. DEBT OBLIGATIONS

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of June 30, 2023 and December 31, 2022 (in thousands):

	June 30, 2023		December 31, 2022		Effective Interest Rate		Maturity Date
SECURED DEBT:
$245.0M 5.88% Secured Term Loan due 2028	$	245,000	—		5.88%		February 2028
Less: deferred financing costs	(3,617)		—
Total Secured indebtedness	$	241,383	$	—
UNSECURED DEBT
$600 million Unsecured Credit Facility	$	—	$	88,500	SOFR + 1.15%		June 2026	(a)
Term Loan - Swapped to fixed	250,000		250,000		SOFR + 1.30%		June 2027	(b)
$70.0 million Term Loan	70,000		—		SOFR + 1.85%		February 2024	(a)(c)
$350.0M 3.95% Guaranteed Notes due 2023	—		54,301		3.87%		February 2023	(d)
$350.0M 4.10% Guaranteed Notes due 2024	350,000		350,000		3.78%		October 2024
$450.0M 3.95% Guaranteed Notes due 2027	450,000		450,000		4.03%		November 2027
$350.0M 7.55% Guaranteed Notes due 2028	350,000		350,000		7.73%		March 2028
$350.0M 4.55% Guaranteed Notes due 2029	350,000		350,000		4.30%		October 2029
Indenture IA (Preferred Trust I)	27,062		27,062		LIBOR + 1.25%	(e)	March 2035
Indenture IB (Preferred Trust I)	25,774		25,774		LIBOR + 1.25%	(e)	April 2035
Indenture II (Preferred Trust II)	25,774		25,774		LIBOR + 1.25%	(e)	July 2035
Principal balance outstanding	1,898,610		1,971,411
Plus: original issue premium (discount), net	2,417		2,934
Less: deferred financing costs	(8,589)		(9,307)
Total unsecured indebtedness	$	1,892,438	$	1,965,038
Total Debt Obligations	$	2,133,821	$	1,965,038

(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 of 5.01% and matures on June 30, 2027. The effective date of the swap was January 31, 2023.

(c)The maturity date of the $70.0 million unsecured term loan is subject to a 12 month optional extension upon customary terms and conditions.

(d)On January 20, 2023, the Company redeemed in full its then outstanding 3.95% Guaranteed Notes due 2023 (the “2023 Notes”). The aggregate redemption price of the 2023 Notes was approximately $55.2 million (approximately $54.3 million in principal and approximately $0.92 million of accrued and unpaid interest).

(e)On July 1, 2023, the stated rate of interest was replaced with 3-month CME Term SOFR + 1.51%. The rate will be in effect as the existing 3-month LIBOR interest periods expire over the next three months.

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, 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 1.05% 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 three months ended June 30, 2023, the weighted-average interest rate on Unsecured Credit Facility borrowings was 5.62%, resulting in $0.4 million of interest expense for such period.

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Secured Facility due 2028

On January 19, 2023, seven indirect wholly-owned subsidiaries of the Company entered into a term loan agreement secured by seven operating properties in the aggregate principal amount of $245.0 million (the “Secured Facility”). The Secured Facility has a scheduled maturity date of February 6, 2028 and may be prepaid in full on or after March 6, 2025, subject to a prepayment premium, and may be prepaid in full on or after August 6, 2027 without any prepayment premium. The Secured Facility bears interest at 5.88% per year through the maturity date and is interest-only (payable monthly) through the maturity date.

2023 Unsecured Term Loan

On March 1, 2023, the Company entered into an unsecured one-year term loan agreement in the aggregate principal amount of $70.0 million (the “2023 Term Loan”). The 2023 Term Loan has a scheduled maturity date of February 28, 2024 with an option to extend for an additional twelve months upon customary terms and conditions. The 2023 Term Loan bears interest at Daily Simple SOFR plus 1.75%, with a 0.10% SOFR adjustment per year through the maturity date and is interest-only (payable monthly) through the maturity date.

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 June 30, 2023. Certain of the covenants restrict the Company’s ability to obtain alternative sources of capital.

As of June 30, 2023, the aggregate scheduled principal payments on the Company’s consolidated debt obligations were as follows (in thousands):

2023 (six months remaining)	$	—
2024	350,000
2025	70,000
2026	—
2027	700,000
Thereafter	1,023,610
Total principal payments	2,143,610
Net unamortized premiums/(discounts)	2,417
Net deferred financing costs	(12,206)
Outstanding indebtedness	$	2,133,821

8. FAIR VALUE OF FINANCIAL INSTRUMENTS

Financial assets and liabilities recorded on the 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 June 30, 2023 and December 31, 2022, 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 June 30, 2023 and December 31, 2022 approximate the fair values for cash and cash equivalents, accounts receivable, other assets and liabilities, accounts payable and accrued expenses because they

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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):

	June 30, 2023				December 31, 2022
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,495,763	$	1,269,445	$	1,549,760	$	1,411,351
Variable rate debt	$	396,675	$	354,862	$	415,278	$	386,988
Secured fixed rate debt	$	241,383	$	234,244	$	—	$	—

(a)Net of deferred financing costs of $6.7 million and $7.5 million for unsecured notes payable, $1.9 million and $1.8 million for variable rate debt and $3.6 million and $0.0 million for secured fixed rate debt as of June 30, 2023 and December 31, 2022.

The Company used quoted market prices as of June 30, 2023 and December 31, 2022 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 June 30, 2023 and December 31, 2022. 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 June 30, 2023. 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 June 30, 2023 and December 31, 2022. 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
				6/30/2023		12/31/2022						6/30/2023		12/31/2022
Assets/(Liabilities)
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	3.729	%	November 23, 2022	June 30, 2027	$	2,897	$	255
				$	250,000	$	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.

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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 $4.7 million and $4.9 million as of June 30, 2023 and December 31, 2022, respectively. Under the applicable accounting guidance, the redemption value of the redeemable common limited partnership units are 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 June 30, 2023) was approximately $2.4 million and $3.2 million as of June 30, 2023 and December 31, 2022, 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 June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(12,737)	$	(12,737)	$	4,651	$	4,651
Net (income) loss attributable to noncontrolling interests	41		41		(14)		(14)
Nonforfeitable dividends allocated to unvested restricted shareholders	(204)		(204)		(98)		(98)
Net income (loss) attributable to common shareholders	$	(12,900)	$	(12,900)	$	4,539	$	4,539
Denominator
Weighted-average shares outstanding	171,962,162		171,962,162		171,527,031		171,527,031
Contingent securities/Share based compensation	—		—		—		733,398
Weighted-average shares outstanding	171,962,162		171,962,162		171,527,031		172,260,429
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders	$	(0.08)	$	(0.08)	$	0.03	$	0.03

	Six Months Ended June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(18,013)	$	(18,013)	$	10,752	$	10,752
Net (income) loss attributable to noncontrolling interests	58		58		(22)		(22)
Nonforfeitable dividends allocated to unvested restricted shareholders	(274)		(274)		(246)		(246)
Net income (loss) attributable to common shareholders	$	(18,229)	$	(18,229)	$	10,484	$	10,484
Denominator
Weighted-average shares outstanding	171,818,463		171,818,463		171,411,631		171,411,631
Contingent securities/Share based compensation	—		—		—		1,163,777
Weighted-average shares outstanding	171,818,463		171,818,463		171,411,631		172,575,408
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders	$	(0.11)	$	(0.11)	$	0.06	$	0.06

Redeemable common limited partnership units totaling 516,467 at June 30, 2023 and June 30, 2022, were excluded from the diluted earnings per share computations because they are not dilutive.

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 six months ended June 30, 2023 and 2022, 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.

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Common Shares

On May 25, 2023, the Parent Company declared a distribution of $0.19 per common share, totaling $32.9 million, which was paid on July 20, 2023 to shareholders of record as of July 6, 2023.

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 six months ended June 30, 2023 and June 30, 2022, 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 June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(12,737)	$	(12,737)	$	4,651	$	4,651
Net loss attributable to noncontrolling interests	—		—		2		2
Nonforfeitable dividends allocated to unvested restricted unitholders	(204)		(204)		(98)		(98)
Net income (loss) attributable to common unitholders	$	(12,941)	$	(12,941)	$	4,555	$	4,555
Denominator
Weighted-average units outstanding	172,478,629		172,478,629		172,043,498		172,043,498
Contingent securities/Share based compensation	—		—		—		733,398
Total weighted-average units outstanding	172,478,629		172,478,629		172,043,498		172,776,896
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common unitholders	$	(0.08)	$	(0.08)	$	0.03	$	0.03

	Six Months Ended June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(18,013)	$	(18,013)	$	10,752	$	10,752
Net loss attributable to noncontrolling interests	1		1		4		4
Nonforfeitable dividends allocated to unvested restricted unitholders	(274)		(274)		(246)		(246)
Net income (loss) attributable to common unitholders	$	(18,286)	$	(18,286)	$	10,510	$	10,510
Denominator
Weighted-average units outstanding	172,334,930		172,334,930		171,985,863		171,985,863
Contingent securities/Share based compensation	—		—		—		1,163,777
Total weighted-average units outstanding	172,334,930		172,334,930		171,985,863		173,149,640
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common unitholders	$	(0.11)	$	(0.11)	$	0.06	$	0.06

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 six months ended June 30, 2023 and 2022, 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 May 25, 2023, the Operating Partnership declared a distribution of $0.19 per common partnership unit, totaling $32.9 million, which was paid on July 20, 2023 to unitholders of record as of July 6, 2023.

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 six months ended June 30, 2023 and June 30, 2022, the Company did not repurchase any units.

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13. SEGMENT INFORMATION

As of June 30, 2023, 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 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. Beginning on January 1, 2023, the properties that were historically part of the Metro Washington D.C. segment are reflected in the other reportable segment. The operations for the Metro Washington D.C. segment for the three and six months ended June 30, 2023 and real estate investments as of June 30, 2023 and December 31, 2022, as detailed below, have been included in the Other reportable segment. The following tables provide selected asset information and results of operations of the Company’s reportable segments (in thousands):

Real estate investments, at cost:
	June 30, 2023		December 31, 2022
Philadelphia CBD	$	1,519,616	$	1,517,801
Pennsylvania Suburbs	906,584		878,546
Austin, Texas	798,229		851,835
Total Core Segments	3,224,429		3,248,182
Other	372,782		369,058
	$	3,597,211	$	3,617,240
Assets held for sale (a)	52,664		—
Operating Properties	$	3,649,875	$	3,617,240
Corporate
Right of use asset - operating leases, net	$	19,346	$	19,664
Construction-in-progress	$	245,677	$	218,869
Land held for development	$	71,493	$	76,499
Prepaid leasehold interests in land held for development, net	$	27,762	$	35,576

Net operating income:

	Three Months Ended June 30,
	2023						2022
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	56,671	$	(20,257)	$	36,414	$	55,426	$	(20,538)	$	34,888
Pennsylvania Suburbs	32,102		(10,084)		22,018		31,333		(10,258)		21,075
Austin, Texas	23,781		(8,683)		15,098		23,921		(10,438)		13,483
Other	8,888		(4,850)		4,038		9,405		(5,458)		3,947
Corporate	4,440		(2,145)		2,295		3,957		(2,957)		1,000
Operating properties	$	125,882	$	(46,019)	$	79,863	$	124,042	$	(49,649)	$	74,393

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	Six Months Ended June 30,
	2023						2022
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	112,898	$	(40,843)	$	72,055	$	108,897	$	(40,281)	$	68,616
Pennsylvania Suburbs	64,873		(19,863)		45,010		63,140		(20,416)		42,724
Austin, Texas	49,018		(19,977)		29,041		48,836		(20,731)		28,105
Other	18,277		(10,262)		8,015		18,204		(10,896)		7,308
Corporate	10,043		(5,909)		4,134		12,470		(5,243)		7,227
Operating properties	$	255,109	$	(96,854)	$	158,255	$	251,547	$	(97,567)	$	153,980

(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 venture
	As of				Three Months Ended June 30,
	June 30, 2023		December 31, 2022		2023		2022
Philadelphia CBD	$	452,365	$	387,301	$	(4,412)	$	(2,574)
Metropolitan Washington, D.C.	82,603		83,903		(1,414)		(381)
Mid-Atlantic Office JV	28,791		31,005		223		(101)
MAP Venture	(41,310)		(35,411)		(1,995)		(1,925)
Austin, Texas	66,746		65,426		—		—
Total	$	589,195	$	532,224	$	(7,598)	$	(4,981)

Net operating income (“NOI”) is a non-GAAP financial measure, which we define 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 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):

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	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Net income (loss)	$	(12,737)	$	4,651	$	(18,013)	$	10,752
Plus:
Interest expense	23,669		16,341		46,322		32,083
Interest expense - amortization of deferred financing costs	1,114		805		2,141		1,514
Depreciation and amortization	47,079		43,959		92,679		87,741
General and administrative expenses	9,360		8,328		18,842		18,328
Equity in loss of unconsolidated real estate ventures	7,598		4,981		13,765		9,544
Provision for impairment	4,468		—		4,468		—
Less:
Interest income	520		449		1,025		889
Income tax provision	(13)		(48)		(38)		(75)
Net gain on disposition of real estate	—		144		—		144
Net gain on sale of undepreciated real estate	—		4,127		781		5,024
Net gain on real estate venture transactions	181		—		181		—
Consolidated net operating income	$	79,863	$	74,393	$	158,255	$	153,980

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.

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Debt Guarantees and Equity Funding Commitments

As of June 30, 2023, the Company’s unconsolidated real estate ventures had aggregate indebtedness of $1,341.0 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. As of June 30, 2023, it is expected the project will require $12.7 million of additional equity funding through the project completion date. Similarly, 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. With respect to the construction loan obtained by 3025 JFK Venture on July 23, 2021, the Company has also provided a carry guarantee and limited payment guarantee up to 25% of the principal balance of the $186.7 million construction loan. As of June 30, 2023, 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. The partner is responsible for up to $37.0 million of additional construction costs. Thereafter, if a construction loan has not been obtained, the Company would be responsible to fund the balance of the development costs and would be funded through the use of its credit facilities and cash on hand. In addition, with respect to the One Uptown Ventures, the Company has provided completion guarantees and environmental indemnities in favor of its partner. As of June 30, 2023, it is expected the project will require $10.0 million of additional equity funding through the project completion date. Furthermore, in addition to completion guarantees, environmental indemnities and guarantees of exceptions to nonrecourse loan provisions in favor of the lenders for the One Uptown Ventures, 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 and $85.0 million construction loans, respectively.

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 June 30, 2023, had $6.6 million of future fixed contractual obligations. The Company also committed to fund additional contributions under the program. As of June 30, 2023, the Company estimates that these additional contributions, which are not fixed under the terms of agreement, will be $2.2 million.

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.

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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 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, 2022. 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.

The discussion that follows is based primarily on our consolidated financial statements as of June 30, 2023 and December 31, 2022 and for the three and six months ended June 30, 2023 and 2022 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 properties placed in service and dispositions made during those periods.

OVERVIEW

During the six months ended June 30, 2023, 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 of certain real estate properties during the construction period, and certain other general support functions.

We generate cash and revenue from leases of space at our Properties and, to a lesser extent, from the management and development of properties owned by third parties 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.

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

Overall economic conditions, including but not limited to labor shortages, supply chain constraints, inflation, rising interest rates and deteriorating financial and credit markets, could have a dampening effect on the fundamentals of our business, including increases in past due accounts, tenant defaults, lower occupancy and reduced effective rents. These adverse conditions could impact our net income and cash flows and could have a material adverse effect on our financial condition. We believe that the quality of our assets and the strength of our balance sheet will enable us to raise capital, if 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.

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We continue to seek revenue growth throughout our portfolio by increasing occupancy and rental rates. Occupancy at our Core Properties at June 30, 2023 was 89.4% compared to 89.6% at June 30, 2022.

The table below summarizes selected operating and leasing statistics of our wholly owned properties for the three and six months ended June 30, 2023 and 2022:

	Three Months Ended June 30,						Six Months Ended June 30,
	2023			2022			2023			2022
Leasing Activity
Core Properties (1):
Total net rentable square feet owned	12,823,542			12,996,825			12,823,542			12,996,825
Occupancy percentage (end of period)	89.4		%	89.6		%	89.4		%	89.6		%
Average occupancy percentage	89.0		%	88.9		%	89.2		%	89.4		%
Total Portfolio, less properties in development/redevelopment (2):
Tenant retention rate (3)	70.7		%	70.3		%	55.4		%	60.6		%
New leases and expansions commenced (square feet)	93,215			247,597			159,466			359,694
Leases renewed (square feet)	113,952			137,103			222,745			519,458
Net (negative) absorption (square feet)	18,311			27,391			(90,976)			(224,973)
Percentage change in rental rates per square foot (4):
New and expansion rental rates	30.1		%	26.2		%	21.1		%	23.9		%
Renewal rental rates	13.0		%	8.3		%	14.4		%	17.9		%
Combined rental rates	17.6		%	18.4		%	16.0		%	19.6		%
Weighted average lease term for leases commenced (years)	7.0			8.0			7.2			8.3
Capital Costs Committed (5):
Leasing commissions (per square foot)	$	7.33		$	10.45		$	9.64		$	11.95
Tenant Improvements (per square foot)	$	23.06		$	39.59		$	16.79		$	35.81
Total capital per square foot per lease year	$	3.72		$	4.85		$	3.26		$	4.44

(1)Does not include properties under development, redevelopment, held for sale, or sold.

(2)Includes leasing related to completed developments and redevelopments, recently completed not yet stabilized, and sold properties.

(3)Calculated as percentage of total square feet.

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

(5)Calculated on a weighted average basis.

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.

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 3.2% of our aggregate final annualized base rents as of June 30, 2023 (representing approximately 3.8% of the net rentable square feet of the properties) are scheduled to expire without penalty during the remainder of 2023. 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 $3.8 million or 2.0% of our accrued rent receivable balance as of June 30, 2023, compared to $3.9 million or 2.1% of our accrued rent receivable balance as of December 31, 2022.

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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 Risk

Development 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 and other agreements on favorable terms, and unexpected environmental and other hazards.

As of June 30, 2023, the following active development and redevelopment projects, within our consolidated portfolio, remain 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
250 King of Prussia Road (a)	Radnor, PA	Q3 2022	Redevelopment	168,294	$	103,680	$	—	$	83,716
2340 Dulles Corner Boulevard (b)	Herndon, VA	Q2 2023	Redevelopment	268,365	$	117,974	$	—	$	95,243
155 King of Prussia Road	Radnor, PA	Q4 2024	Development	144,685	$	80,000	(c)		$	23,649

(a)Total project costs include $20.6 million of existing property basis. Base building was completed in the third quarter of 2022. The remaining amounts unfunded relate to tenant fit-out work to be completed.

(b)Total project costs include $58.0 million of existing property basis.

(c)The development budget contemplates receipt of a construction loan of approximately $50.0 million, reflecting a 55% loan to value ratio. As of the date of this Form 10-Q, a third-party construction lender has been identified and the Company is actively negotiating the terms of the loan agreement; however, since a definitive agreement has not been reached and the construction loan has not been completed, 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.

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

As of June 30, 2023 the following active unconsolidated real estate venture development projects remain under construction in progress (dollars, in thousands):

Property/Portfolio Name (a)	Location	Expected 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 (55%)	Philadelphia, PA	Q4 2023	(b)	$	300,000	$	215,368	$	186,727	$	12,728	$	—
3151 Market Street (55%)	Philadelphia, PA	Q2 2024	441,000	$	316,909	$	105,636	(c)		(c)		$	36,973
One Uptown - Office (50%)	Austin, TX	Q4 2023	362,679	$	201,616	$	111,800	$	121,650	$	10,000	$	—
One Uptown - Multifamily (50%)	Austin, TX	Q3 2024	341 Units	$	144,029	$	76,563	$	85,000	$	—	$	—

(a)The percentage represents Brandywine's ownership in the venture.

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

(c)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.

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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, 2022 contains a discussion of our critical accounting policies. There have been no significant changes in our critical accounting policies since December 31, 2022.

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RESULTS OF OPERATIONS

The following discussion is based on our consolidated financial statements for the three and six months ended June 30, 2023 and 2022. 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 June 30, 2023 and June 30, 2022

The following comparison for the three months ended June 30, 2023 to the three months ended June 30, 2022, makes reference to the effect of the following:

(a)“Same Store Property Portfolio,” which represents 71 properties containing an aggregate of approximately 12.6 million net rentable square feet, and represents properties that we owned and consolidated for the three-month periods ended June 30, 2023 and 2022. The Same Store Property Portfolio includes properties acquired or placed in service on or prior to April 1, 2022 and owned and consolidated through June 30, 2023, excluding properties classified as held for sale,

(b)“Total Portfolio,” which represents all properties owned and consolidated by us during the three months ended June 30, 2023 and 2022,

(c)“Recently Completed/Acquired Property,” which represents one property placed into service or acquired on or subsequent to April 1, 2022,

(d)“Development/Redevelopment Properties,” which represents four 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)“Q2 2022 through Q2 2023 Dispositions,” which represents five properties disposed of from April 1, 2022 through June 30, 2023.

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Comparison of the three months ended June 30, 2023 to the three months ended June 30, 2022

	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)	2023			2022			$ Change		% Change		2023		2022		2023		2022		2023		2022		2023		2022		$ Change		% Change
Revenue:
Rents	$	108.2		$	108.0		$	0.2	0.2	%	$3.5		$	1.2	$	1.2	$	0.2	$	5.3	$	7.4	$	118.2	$	116.8	$	1.4	1.2	%
Third party management fees, labor reimbursement and leasing	—			—			—		—	%	—		—		—		—		6.2		5.9		6.2		5.9		0.3		5.1	%
Other	0.3			0.3			—		—	%	—		—		—		—		1.2		0.9		1.5		1.2		0.3		25.0	%
Total revenue	108.5			108.3			0.2		0.2	%	3.5		1.2		1.2		0.2		12.7		14.2		125.9		123.9		2.0		1.6	%
Property operating expenses	28.1			28.7			(0.6)		(2.1)	%	0.9		0.3		0.1		—		2.8		4.1		31.9		33.1		(1.2)		(3.6)	%
Real estate taxes	10.4			12.6			(2.2)		(17.5)	%	0.6		0.2		0.2		0.1		0.4		0.8		11.6		13.7		(2.1)		(15.3)	%
Third party management expenses	—			—			—		—	%	—		—		—		—		2.6		2.8		2.6		2.8		(0.2)		(7.1)	%
Net operating income	70.0			67.0			3.0		4.5	%	2.0		0.7		0.9		0.1		6.9		6.5		79.8		74.3		5.5		7.4	%
Depreciation and amortization	41.3			38.8			2.5		6.4	%	0.9		0.5		0.8		0.1		3.8		4.3		46.8		43.7		3.1		7.1	%
General & administrative expenses	—			—			—		—	%	—		—		—		—		9.5		8.4		9.5		8.4		1.1		13.1	%
Provision for impairment	—			—			—		—	%	—		—		—		—		4.5		—		4.5		—		4.5		—	%
Net gain on disposition of real estate																							—		(0.1)		0.1		(100.0)	%
Net gain on sale of undepreciated real estate																							—		(4.1)		4.1		(100.0)	%
Operating income (loss)	$	28.7		$	28.2		$	0.5	1.8	%	$1.1		$	0.2	$	0.1	$	—	$	(10.9)	$	(6.2)	$	19.0	$	26.4	$	(7.4)	(28.0)	%
Number of properties	71			71							1				4								76
Square feet	12.6			12.6							0.2				0.6								13.4
Core Occupancy % (b)	89.4		%	89.4		%					89.3	%
Other Income (Expense):
Interest income																							0.5		0.4		0.1		25.0	%
Interest expense																							(23.7)		(16.3)		(7.4)		45.4	%
Interest expense — Deferred financing costs																							(1.1)		(0.8)		(0.3)		37.5	%
Equity in loss of unconsolidated real estate ventures																							(7.6)		(5.0)		(2.6)		52.0	%
Net gain on real estate venture transactions																							0.2		—		0.2		—	%
Net income (loss)																							$	(12.7)	$	4.7	$	(17.4)	(370.2)	%
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust																							$	(0.08)	$	0.03	$	(0.11)	(366.7)	%

(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.

Total Revenue

Rents from the Total Portfolio increased primarily as a result of the following:

•$3.3 million increase related to our Recently Completed/Acquired Property, which are comprised of 405 Colorado, Austin, TX and 250 King of Prussia Road, Radnor, PA;

•$1.8 million increase related to new lease commencements, net of rollover, primarily in our Philadelphia CBD and Pennsylvania Suburbs segments;

•$2.2 million offset due to a decrease in real estate tax reimbursement income as a result of real estate tax reassessments in Austin, TX; and

•$1.5 offset due to the sale of 200 Barr Harbor Drive, West Conshohocken, PA in the fourth quarter of 2022 and removing one building from service in our Philadelphia CBD segment in the third quarter of 2022.

Property Operating Expenses

Property Operating Expenses decreased as a results of the sale of 200 Barr Harbor Drive, West Conshohocken, PA in the fourth quarter of 2022 and removing one building from service in our Philadelphia CBD segment in the third quarter of 2022.

Real Estate Taxes

Real Estate Taxes decreased primarily due to a $2.9 million decrease across properties in our Austin, TX segment as a result of tax reassessments.

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Depreciation and Amortization

Depreciation and amortization expense increased primarily due to the placement into service of our recently completed/acquired property and tenant improvements partially, offset by the sale of 200 Barr Harbor Drive in the fourth quarter of 2022 and removing one building from service in our Philadelphia CBD segment in the third quarter of 2022.

General and Administrative

General and Administrative expense increased primarily due to a $0.4 million increase related to non-cash compensation expense during the three months ended June 30, 2023 compared to the six months ended June 30, 2022.

Provision for Impairment

The Provision for Impairment is due to a property in our Austin, TX segment which met the held for sale criteria at June 30, 2023. Since the estimated sales proceeds are less than the carrying value of the assets, net of liabilities, we recognized an impairment charge inclusive of costs to sell.

Net Gain on Sale of Undepreciated Real Estate

In the second quarter of 2022, gains totaling $4.1 million were recognized related to the sale of a portfolio of five parcels of land and three operating properties in our Other segment.

Interest Expense

Interest expense increased primarily due to a full quarter of our interest incurred on our 2028 Bonds (issued in December 2022), which carry an effective interest rate of 7.75% per annum compared to the retired 2023 Bonds, which carried an effective interest rate of 3.865% per annum. In addition, we closed on our $245 million secured term loan which paid down our line of credit and obtained another $70 million of unsecured financing in March 2023 resulting in higher leverage at higher interest rates over the prior period.

Equity in Income of Real Estate Ventures

The increased losses from our joint ventures is primarily due to higher interest rates on the ventures’ outstanding indebtedness.

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Comparison of the Six Months Ended June 30, 2023 and June 30, 2022

The following comparison for the six months ended June 30, 2023 to the six months ended June 30, 2022, makes reference to the effect of the following:

(a)“Same Store Property Portfolio,” which represents 71 properties containing an aggregate of approximately 12.6 million net rentable square feet, and represents properties that we owned and consolidated for the six-month periods ended June 30, 2023 and 2022. The Same Store Property Portfolio includes properties acquired or placed in service on or prior to January 1, 2022 and owned and consolidated through June 30, 2023 excluding properties classified as held for sale,

(b)“Total Portfolio,” which represents all properties owned and consolidated by us during the six months ended June 30, 2023 and 2022,

(c)"Recently Completed/Acquired Property," which represents one property placed into service or acquired on or subsequent to January 1, 2022,

(d)"Development/Redevelopment Properties," which represents four 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 2022 and 2023 Dispositions," which represents six properties disposed of from January 1, 2022 through June 30, 2023.

Comparison of the six months ended June 30, 2023 to the six months ended June 30, 2022

	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)	2023			2022			$ Change		% Change		2023			2022		2023		2022		2023		2022		2023		2022		$ Change		% Change
Revenue:
Rents	$	220.3		$	216.4		$	3.9	1.8	%	$	6.2		$	2.3	$	2.1	$	0.3	$	10.4	$	13.8	$	239.0	$	232.8	$	6.2	2.7	%
Third party management fees, labor reimbursement and leasing	—			—			—		—	%	—			—		—		—		12.2		11.0		12.2		11.0		1.2		10.9	%
Other	0.5			0.6			(0.1)		(16.7)	%	—			0.1		—		—		3.4		7.1		3.9		7.8		(3.9)		(50.0)	%
Total revenue	220.8			217.0			3.8		1.8	%	6.2			2.4		2.1		0.3		26.0		31.9		255.1		251.6		3.5		1.4	%
Property operating expenses	58.4			56.9			1.5		2.6	%	1.6			0.5		0.2		—		5.3		7.3		65.5		64.7		0.8		1.2	%
Real estate taxes	23.4			25.3			(1.9)		(7.5)	%	1.4			0.4		0.2		0.2		1.1		1.7		26.1		27.6		(1.5)		(5.4)	%
Third party management expenses	—			—			—		—	%	—			—		—		—		5.2		5.3		5.2		5.3		(0.1)		(1.9)	%
Net operating income	139.0			134.8			4.2		3.1	%	3.2			1.5		1.7		0.1		14.4		17.6		158.3		154.0		4.3		2.8	%
Depreciation and amortization	81.0			77.8			3.2		4.1	%	1.8			0.9		1.4		0.1		8.6		8.9		92.8		87.7		5.1		5.8	%
General & administrative expenses	—			—			—		—	%	—			—		—		—		18.8		18.3		18.8		18.3		0.5		2.7	%
Provision for impairment	—			—			—		—	%	—			—		—		—		4.5		—		4.5		—		4.5		—	%
Net gain on disposition of real estate																								—		(0.1)		0.1		(100.0)	%
Net gain on sale of undepreciated real estate																								(0.8)		(5.0)		4.2		(84.0)	%
Operating income (loss)	$	58.0		$	57.0		$	1.0	1.8	%	$	1.4		$	0.6	$	0.3	$	—	$	(17.5)	$	(9.6)	$	43.0	$	53.1	$	(10.1)	(19.0)	%
Number of properties	71			71							1					4								76
Square feet	12.6			12.6							0.2					0.6								13.4
Core Occupancy % (b)	89.4		%	88.7		%					89.3		%
Other Income (Expense):
Interest income																								1.0		0.9		0.1		11.1	%
Interest expense																								(46.3)		(32.1)		(14.2)		44.2	%
Interest expense — Deferred financing costs																								(2.1)		(1.5)		(0.6)		40.0	%
Equity in loss of unconsolidated real estate ventures																								(13.8)		(9.5)		(4.3)		45.3	%
Net gain on real estate venture transactions																								0.2		—		0.2		—	%
Income tax provision																								—		(0.1)		0.1		(100.0)	%
Net income (loss)																								$	(18.0)	$	10.8	$	(28.8)	(266.7)	%
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust																								$	(0.11)	$	0.06	$	(0.17)	(283.3)	%

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(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.

Total Revenue

Rents from the Total Portfolio increased primarily as a result of the following:

•$5.7 million increase related to our Recently Completed/Acquired Property which comprise 405 Colorado, Austin, TX and 250 King of Prussia Road, Radnor, PA.;

•$4.3 increase related to new lease commencements, net of rollover, from April 2022 to June 2023;

•$2.2 million offset due to a decrease in real estate tax reimbursement income as a result of real estate tax reassessments in Austin, TX; and

•$2.6 million offset due to the sale of 200 Barr Harbor Drive in the fourth quarter of 2022 and removing one building from service in our Philadelphia CBD segment in the third quarter of 2022.

Other income decreased primarily as a result of the following:

•A decrease of $1.4 million of excess insurance proceeds received during the six months ended June 30, 2023 in comparison to the six months ended June 30, 2022. During the six months ended June 30, 2023 and 2022, we received $1.0 million and $2.4 million, respectively, of excess insurance proceeds relating to a property in our Austin, Texas segment;

•$2.2 million of settlement proceeds received from a general contractor for liquidated damages as a result of a construction delay at a property in our Austin, Texas segment during the six months ended June 30, 2022; and

•$0.5 million offset related non-rental or fee income activities.

Real Estate Taxes

Real estate taxes decreased primarily due to a $2.9 million decrease across properties in our Austin, Texas segment as a result of tax reassessments.

Depreciation and Amortization

Depreciation and amortization expense increased primarily due to the placement into service of our Recently Completed/Acquired Property which comprise 405 Colorado, Austin, TX and 250 King of Prussia Road, Radnor, PA and tenant improvements, partially, offset by the buildings that were taken out of service or disposed of in the second half of 2022.

Provision for Impairment

The Provision for Impairment is due to a property in our Austin, TX segment which met the held for sale criteria at June 30, 2023. Since the estimated sales proceeds are less than the carrying value of the assets, net of liabilities, we recognized an impairment charge inclusive of costs to sell.

Net Gain on Sale of Undepreciated Real Estate

The gain of $0.8 million recognized during the six months ended June 30, 2022 is related to the contribution of a prepaid leasehold interest to the 3151 Market Street Venture at fair value.

The gain of $5.0 million recognized during the six months ended June 30, 2022 is related to the sale of a portfolio of six parcels of land and three operating properties in our Other segment.

Interest Expense

Interest expense increased primarily due to a full quarter of our interest incurred on our 2028 Bonds (issued in December 2022), which carry an effective interest rate of 7.75% per annum compared to the retired 2023 Bonds, which carried an effective interest rate of 3.865% per annum. In addition, we closed on our $245 million secured term loan which paid down our line of credit and obtained another $70 million unsecured term loan in March 2023, resulting in higher leverage at higher interest rates over the prior period.

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Equity in Loss of Unconsolidated Real Estate Ventures

The increased losses from our joint ventures is primarily due to higher interest rates on the outstanding indebtedness of the ventures and a $0.9 million decrease associated with our former 1919 Market Venture where the underlying property was sold in Q4, 2022.

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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;

•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 June 30, 2023, 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 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, effective 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 2023 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 June 30, 2023 we were in compliance with all of our debt covenants and requirement obligations.

On January 19, 2023, we closed on a term loan secured by seven operating properties with an aggregate principal amount of $245.0 million (the “Secured Facility”). The Secured Facility matures on February 6, 2028. We used the net proceeds from the Secured Facility for general corporate purposes, including to reduce outstanding borrowings under the Company’s Unsecured Credit Facility. On January 20, 2023, we completed the redemption of our then remaining $54.3 million aggregate principal amount of 2023 Notes. See Note 7, “Debt Obligations,” for further information.

On March 1, 2023, we closed on an unsecured term loan with a principal amount of $70.0 million (the “Unsecured Term Facility”). The loan has a scheduled maturity date of February 28, 2024 with an option to extend for twelve months and bears interest at Daily Simple SOFR plus 1.75% with a 0.10% SOFR adjustment. See Note 7, “Debt Obligations,” for further information. We use multiple financing sources to fund our long-term capital needs. When needed, we use borrowings under our Unsecured Credit Facility for general business purposes, including to meet debt maturities and to fund distributions to shareholders as well as for development and acquisition costs and other expenses. In light of the volatility in financial markets and economic uncertainties, it is possible that one or more lenders under our Unsecured Credit Facility could fail to fund a

41

borrowing request. Such an event could adversely affect our ability to access funds under our Unsecured Credit Facility when needed to fund distributions or pay expenses.

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.

The Parent Company unconditionally guarantees the Operating Partnership’s unsecured debt obligations, which, as of June 30, 2023, amounted to $1,898.6 million. We have $245.0 million of debt obligations secured by seven of our wholly-owned portfolio as of June 30, 2023.

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.

Capital Recycling

The Operating Partnership also considers net sales of selected properties and recapitalization of unconsolidated real estate ventures as additional sources of managing its liquidity. During the six months ended June 30, 2023, we contributed to the 3151 Market Street Venture 200,000 square feet of FAR, which represents buildable density, at the project site, and, upon contribution at fair market value, recognized a gain, net of transaction costs, of $0.8 million.

As of June 30, 2023, we have one asset classified as held for sale which is expected to close in the third quarter of 2023. The anticipated sales proceeds, net of selling costs is $51.5 million. Consummation of the sale is subject to closing conditions and there can be no assurance that the sale will be consummated on expected terms, or at all.

As of June 30, 2023, we had $32.1 million of cash and cash equivalents and $557.6 million of available borrowings under our unsecured credit facility, net of $42.4 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 2023 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.

As of June 30, 2023 and December 31, 2022, we maintained cash and cash equivalents and restricted cash of $43.0 million and $18.4 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):

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	Six Months Ended June 30,
Activity	2023		2022		(Decrease) Increase
Operating	$	61,304	$	78,494	$	(17,190)
Investing	(137,862)		(188,862)		51,000
Financing	101,158		111,848		(10,690)
Net cash flows	$	24,600	$	1,480	$	23,120

Our principal source of cash flows is from the operation 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. The decrease in operating cash flows is primarily due to the timing of operating expenses.

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 enable us to take advantage of our development, leasing, financing, and property management skills and invest in existing buildings that meet our investment criteria. During the six months ended June 30, 2023, when compared to the six months ended June 30, 2022, the change in investing cash flows was due to the following activities (in thousands):

	(Decrease) Increase
Acquisitions of real estate	$	3,446
Capital expenditures and capitalized interest	96,670
Capital improvements/acquisition deposits/leasing costs	20,983
Joint venture investments	(32,483)
Proceeds from the sale of properties	(34,146)
Capital distributions from unconsolidated real estate ventures	(3,470)
Decrease in net cash used in investing activities	$	51,000

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 six months ended June 30, 2023, when compared to the six months ended June 30, 2022, the change in financing cash flows was due to the following activities (in thousands):

	(Decrease) Increase
Proceeds from debt obligations	$	255,000
Repayments of debt obligations	(273,801)
Redemption of limited partnership units	4,006
Dividends and distributions paid	(64)
Debt financing costs paid	2,186
Other financing activities	1,983
Decrease in net cash provided by financing activities	$	(10,690)

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Capitalization

Indebtedness

The table below summarizes our secured and unsecured debt at June 30, 2023 and December 31, 2022:  

	June 30, 2023			December 31, 2022
	(dollars in thousands)
Balance: (a)
Fixed rate	$	1,995,000		$	1,554,301
Variable rate - unhedged (b)	148,610			417,110
Total	$	2,143,610		$	1,971,411
Percent of Total Debt:
Fixed rate	93.1		%	78.8		%
Variable rate - unhedged	6.9		%	21.2		%
Total	100.0		%	100.0		%
Weighted-average interest rate at period end:
Fixed rate	5.0		%	4.9		%
Variable rate - unhedged	6.7		%	5.6		%
Total	5.1		%	5.0		%
Weighted-average maturity in years:
Fixed rate	4.3			4.6
Variable rate - unhedged	7.2			5.9
Total	4.5			4.8

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

(b)On November 23, 2022, our $ 250.0 million unsecured term loan was swapped to a fixed rate of 5.01% and matures on June 30, 2027. The effective date of the swap was January 31, 2023.

Scheduled principal payments and related weighted average annual effective interest rates for our debt as of June 30, 2023 were as follows (dollars in thousands):

Period	Principal maturities		Weighted Average Interest Rate of Maturing Debt
2023 (six months remaining)	$	—	—	%
2024	350,000		3.78	%
2025	70,000		6.90	%
2026	—		—	%
2027	700,000		4.38	%
2028	595,000		6.97	%
2029	350,000		4.30	%
2030	—		—	%
2031	—		—	%
2032	—		—	%
Thereafter	78,610		6.50	%
Totals	$	2,143,610	5.15	%

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 June 30, 2023.

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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 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 second quarter of 2023.

Inflation

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 June 30, 2023, approximately 96% of our leases (as a percentage of the aggregate net rentable square feet of our wholly-owned portfolio) contain effective 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. Accordingly, we do not believe that our cash flows or earnings from real estate operations are subject to significant risks from inflation. However, recent inflation and higher interest rates has caused an increase in our borrowing costs, including on our variable rate debt.

Other Contractual Obligations

We provide customary guarantees for certain development projects of our unconsolidated real estate ventures. See Note 15 “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, 2022 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.

45

The following table presents a reconciliation of net income attributable to common unitholders to FFO for the three and six months ended June 30, 2023 and 2022:

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
	(amounts in thousands, except share information)
Net income (loss) attributable to common unitholders	$	(12,941)	$	4,555	$	(18,286)	$	10,510
Add (deduct):
Amount allocated to unvested restricted unitholders	204		98		274		246
Net gain on real estate venture transactions	(181)		—		(181)		—
Net gain on disposition of real estate	—		(144)		—		(144)
Provision for impairment	4,468		—		4,468		—
Depreciation and amortization:
Real property	39,119		36,631		77,749		72,793
Leasing costs including acquired intangibles	7,103		6,597		13,243		13,591
Company’s share of unconsolidated real estate ventures	12,145		12,903		23,709		24,198
Partners’ share of consolidated real estate ventures	(4)		(5)		(8)		(10)
Funds from operations	$	49,913	$	60,635	$	100,968	$	121,184
Funds from operations allocable to unvested restricted shareholders	(309)		(154)		(533)		(392)
Funds from operations available to common share and unit holders (FFO)	$	49,604	$	60,481	$	100,435	$	120,792
Weighted-average shares/units outstanding — basic (a)	172,478,629		172,043,498		172,334,930		171,985,863
Weighted-average shares/units outstanding — fully diluted (a)	172,797,873		172,776,896		172,811,483		173,149,640

(a)Includes common shares and partnership units outstanding through the three and six months ended June 30, 2023 and 2022, 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 June 30, 2023, our consolidated debt consisted of (i) unsecured notes with an outstanding principal balance of $1,500.0 million, all of which are fixed rate borrowings, (ii) variable rate debt consisting of trust preferred securities with an outstanding principal balance of $78.6 million, (iii) a $600.0 million revolving credit facility with no outstanding balance, (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 $9.3 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 $9.7 million.

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As of June 30, 2023, based on prevailing interest rates and credit spreads, the fair value of our unsecured notes was $1,269.4 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 $12.7 million at June 30, 2023.

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 $398.6 million as of June 30, 2023. The total fair value of our variable rate debt was approximately $354.9 million at June 30, 2023. 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 $13.3 million at June 30, 2023. If market rates of interest decrease by 100 basis points the fair value of our outstanding variable rate debt would increase by approximately $14.1 million at June 30, 2023.

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.

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.

47

Part II. OTHER INFORMATION

Item 1. Legal Proceedings

None.

Item 1A. Risk Factors

As of June 30, 2023, 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, 2022.

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 June 30, 2023. As of June 30, 2023, $82.9 million remained available for repurchases under our 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 June 30, 2023, 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 of the Securities Act of 1933).

48

Item 6. Exhibits

(a)	Exhibits
	Exhibits No.	Description
	10.1	Brandywine Realty Trust 2023 Long-Term Incentive Plan (incorporated by reference to Appendix B to the Company’s Definitive Proxy Statement on Schedule 14A filed on March 31, 2023).
	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 Quarterly Reports on Form 10-Q of Brandywine Realty Trust and Brandywine Operating Partnership, L.P. for the quarter ended June 30, 2023 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.

49

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:	July 27, 2023	By:	/s/ Gerard H. Sweeney
			Gerard H. Sweeney, President and Chief Executive Officer
			(Principal Executive Officer)
Date:	July 27, 2023	By:	/s/ Thomas E. Wirth
			Thomas E. Wirth, Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	July 27, 2023	By:	/s/ Daniel Palazzo
			Daniel Palazzo, Vice President and Chief Accounting Officer
			(Principal Accounting Officer)

50

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:	July 27, 2023	By:	/s/ Gerard H. Sweeney
			Gerard H. Sweeney, President and Chief Executive Officer
			(Principal Executive Officer)
Date:	July 27, 2023	By:	/s/ Thomas E. Wirth
			Thomas E. Wirth, Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	July 27, 2023	By:	/s/ Daniel Palazzo
			Daniel Palazzo, Vice President and Chief Accounting Officer
			(Principal Accounting Officer)

51

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: July 27, 2023	/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: July 27, 2023	/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: July 27, 2023	/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: July 27, 2023	/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 June 30, 2023 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: July 27, 2023

* 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 June 30, 2023 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: July 27, 2023

* 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 June 30, 2023 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: July 27, 2023

* 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 June 30, 2023 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: July 27, 2023

* 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	6 Months Ended
	Jun. 30, 2023	Jul. 24, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2023
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		172,097,661
Entity Central Index Key	0000790816
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
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	Jun. 30, 2023	Dec. 31, 2022
Real estate investments:
Operating properties	$ 3,597,211	$ 3,617,240
Accumulated depreciation	(1,125,145)	(1,063,060)
Right of use asset - operating leases, net	19,346	19,664
Operating real estate investments, net	2,491,412	2,573,844
Construction-in-progress	245,677	218,869
Land held for development	71,493	76,499
Prepaid leasehold interests in land held for development, net	27,762	35,576
Total real estate investments, net	2,836,344	2,904,788
Assets held for sale, net	52,664	0
Cash and cash equivalents	32,111	17,551
Restricted cash and escrows	10,876	0
Accounts receivable	11,654	11,003
Accrued rent receivable, net of allowance of $3,778 and $3,947 as of June 30, 2023 and December 31, 2022, respectively	183,191	179,771
Investment in unconsolidated real estate ventures	630,505	567,635
Deferred costs, net	95,102	96,639
Intangible assets, net	11,676	18,451
Other assets	90,362	78,667
Total assets	3,954,485	3,874,505
LIABILITIES AND BENEFICIARIES' EQUITY
Secured term loan, net	241,383	0
Unsecured credit facility	0	88,500
Unsecured term loan, net	318,065	248,168
Unsecured senior notes, net	1,574,373	1,628,370
Accounts payable and accrued expenses	116,913	132,440
Distributions payable	32,957	32,792
Deferred income, gains and rent	24,786	25,082
Intangible liabilities, net	8,811	10,322
Liabilities related to assets held for sale, net	1,041	0
Lease liability - operating leases	23,268	23,166
Other liabilities	56,228	52,331
Total liabilities	2,397,825	2,241,171
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; 172,101,929 and 171,569,807 issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	1,719	1,716
Additional paid-in-capital	3,159,276	3,153,229
Deferred compensation payable in common shares	19,965	19,601
Common shares in grantor trust, 1,207,415 and 1,179,643 issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	(19,965)	(19,601)
Cumulative earnings	1,158,240	1,176,195
Accumulated other comprehensive income	5,216	3,897
Cumulative distributions	(2,775,124)	(2,709,405)
Total Brandywine Realty Trust's equity	1,549,327	1,625,632
Noncontrolling interests	7,333	7,702
Total beneficiaries' equity	1,556,660	1,633,334
Total liabilities and beneficiaries' equity	$ 3,954,485	$ 3,874,505

XML

CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Accrued rent receivable, allowance	$ 3,778	$ 3,947
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	172,101,929	171,569,807
Common stock, shares outstanding (in shares)	172,101,929	171,569,807
Common shares in grantor trust, issued and outstanding (in shares)	1,207,415	1,179,643

XML

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue
Total revenue	$ 125,882	$ 124,042	$ 255,109	$ 251,547
Operating expenses
Property operating expenses	31,891	33,111	65,485	64,659
Real estate taxes	11,571	13,746	26,173	27,559
Third party management expenses	2,557	2,792	5,196	5,349
Depreciation and amortization	47,079	43,959	92,679	87,741
General and administrative expenses	9,360	8,328	18,842	18,328
Provision for impairment	4,468	0	4,468	0
Total operating expenses	106,926	101,936	212,843	203,636
Gain on sale of real estate
Net gain on disposition of real estate	0	144	0	144
Net gain on sale of undepreciated real estate	0	4,127	781	5,024
Total gain on sale of real estate	0	4,271	781	5,168
Operating income	18,956	26,377	43,047	53,079
Other income (expense):
Investment income	520	449	1,025	889
Interest expense	(23,669)	(16,341)	(46,322)	(32,083)
Interest expense - amortization of deferred financing costs	(1,114)	(805)	(2,141)	(1,514)
Equity in loss of unconsolidated real estate ventures	(7,598)	(4,981)	(13,765)	(9,544)
Net gain on real estate venture transactions	181	0	181	0
Net income (loss) before income taxes	(12,724)	4,699	(17,975)	10,827
Income tax provision	(13)	(48)	(38)	(75)
Net income (loss)	(12,737)	4,651	(18,013)	10,752
Net (income) loss attributable to noncontrolling interests	41	(14)	58	(22)
Net income (loss) attributable to Brandywine Realty Trust	(12,696)	4,637	(17,955)	10,730
Nonforfeitable dividends allocated to unvested restricted shareholders	(204)	(98)	(274)	(246)
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust	$ (12,900)	$ 4,539	$ (18,229)	$ 10,484
Basic income (loss) per Common Share (in dollars per share)	$ (0.08)	$ 0.03	$ (0.11)	$ 0.06
Diluted income (loss) per Common Share (in dollars per share)	$ (0.08)	$ 0.03	$ (0.11)	$ 0.06
Basic weighted average shares outstanding (in shares)	171,962,162	171,527,031	171,818,463	171,411,631
Diluted weighted average shares outstanding (in shares)	171,962,162	172,260,429	171,818,463	172,575,408
Rents
Revenue
Total revenue	$ 118,133	$ 116,897	$ 238,981	$ 232,798
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	6,227	5,924	12,229	11,032
Other
Revenue
Total revenue	$ 1,522	$ 1,221	$ 3,899	$ 7,717

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		3 Months Ended				6 Months Ended
		Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income (loss)		$ (12,737)	$ (5,276)	$ 4,651	$ 6,101	$ (18,013)	$ 10,752
Comprehensive income:
Unrealized gain on derivative financial instruments		6,646		1,747		1,355	5,511
Amortization of interest rate contracts	[1]	0		188		0	376
Total comprehensive income		6,646	$ (5,291)	1,935	$ 3,952	1,355	5,887
Comprehensive income (loss)		(6,091)		6,586		(16,658)	16,639
Comprehensive (income) loss attributable to noncontrolling interest		21		(20)		22	(40)
Comprehensive income (loss) attributable to Brandywine Realty Trust		$ (6,070)		$ 6,566		$ (16,636)	$ 16,599

[1] Amounts reclassified from comprehensive income to interest expense within the Consolidated Statements of Operations.

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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, 2021		171,126,257	1,169,703
Beginning balance at Dec. 31, 2021	$ 1,701,219	$ 1,712	$ 18,491	$ 3,146,786	$ (18,491)	$ 1,122,372	$ (2,020)	$ (2,578,583)	$ 10,952
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	6,101					6,093			8
Other comprehensive income (loss)	3,952						3,940		12
Redemption of LP Units	(4,006)								(4,006)
Share-based compensation activity (in shares)		277,061	68,540
Share-based compensation activity	1,655	$ 2		1,653
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(19,406)	(52,702)
Share Issuance from/(to) Deferred Compensation Plan	(249)		$ 895	(249)	(895)
Reallocation of Noncontrolling interest	0			(959)					959
Distributions declared	(32,809)							(32,711)	(98)
Ending balance (in shares) at Mar. 31, 2022		171,383,912	1,185,541
Ending balance at Mar. 31, 2022	1,675,863	$ 1,714	$ 19,386	3,147,231	(19,386)	1,128,465	1,920	(2,611,294)	7,827
Beginning balance (in shares) at Dec. 31, 2021		171,126,257	1,169,703
Beginning balance at Dec. 31, 2021	1,701,219	$ 1,712	$ 18,491	3,146,786	(18,491)	1,122,372	(2,020)	(2,578,583)	10,952
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	10,752
Other comprehensive income (loss)	5,887
Ending balance (in shares) at Jun. 30, 2022		171,575,280	1,202,385
Ending balance at Jun. 30, 2022	1,651,563	$ 1,716	$ 19,601	3,149,146	(19,601)	1,133,102	3,849	(2,643,999)	7,749
Beginning balance (in shares) at Mar. 31, 2022		171,383,912	1,185,541
Beginning balance at Mar. 31, 2022	1,675,863	$ 1,714	$ 19,386	3,147,231	(19,386)	1,128,465	1,920	(2,611,294)	7,827
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,651					4,637			14
Other comprehensive income (loss)	1,935						1,929		6
Share-based compensation activity (in shares)		191,368	16,844
Share-based compensation activity	1,917	$ 2		1,915
Share Issuance from/(to) Deferred Compensation Plan	0		$ 215		(215)
Distributions declared	(32,803)							(32,705)	(98)
Ending balance (in shares) at Jun. 30, 2022		171,575,280	1,202,385
Ending balance at Jun. 30, 2022	$ 1,651,563	$ 1,716	$ 19,601	3,149,146	(19,601)	1,133,102	3,849	(2,643,999)	7,749
Beginning balance (in shares) at Dec. 31, 2022	171,569,807	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 income (loss)	(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	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 income (loss)	(18,013)
Other comprehensive income (loss)	$ 1,355
Ending balance (in shares) at Jun. 30, 2023	172,101,929	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
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 income (loss)	(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	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

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CONSOLIDATED STATEMENTS OF BENEFICIARIES’ EQUITY (Parenthetical) - $ / shares		3 Months Ended
	May 25, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022
Statement of Stockholders' Equity [Abstract]
Distributions declared (in dollars per share)	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.38

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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ (18,013)	$ 10,752
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	92,679	87,741
Amortization of deferred financing costs	2,141	1,514
Amortization of debt discount/(premium), net	(516)	(975)
Amortization of stock compensation costs	6,073	5,419
Straight-line rent income	(4,600)	(5,042)
Amortization of acquired above (below) market leases, net	(760)	(1,664)
Ground rent expense	401	408
Net gain on real estate venture transactions	(181)	0
Total gain on sale of real estate	(781)	(5,168)
Provision for impairment	4,468	0
Loss from unconsolidated real estate ventures, including income distributions	13,765	9,544
Income tax provision	38	75
Changes in assets and liabilities:
Accounts receivable	(469)	(1,254)
Other assets	(12,604)	(2,711)
Accounts payable and accrued expenses	(21,271)	(19,484)
Deferred income, gains and rent	285	(2,487)
Other liabilities	649	1,826
Net cash provided by operating activities	61,304	78,494
Cash flows from investing activities:
Acquisition of properties	0	(3,446)
Proceeds from the sale of properties	0	34,146
Capital expenditures for tenant improvements	(24,431)	(35,545)
Capital expenditures for redevelopments	(34,827)	(56,472)
Capital expenditures for developments	(18,341)	(82,252)
Advances for the purchase of tenant assets, net of repayments	(26)	(447)
Investment in unconsolidated real estate ventures	(60,290)	(27,807)
Deposits for real estate	3,500	(7,550)
Capital distributions from unconsolidated real estate ventures	2,250	5,720
Leasing costs paid	(5,697)	(15,209)
Net cash used in investing activities	(137,862)	(188,862)
Cash flows from financing activities:
Proceeds from credit facility borrowings	136,000	196,000
Repayments of credit facility borrowings	(224,500)	(5,000)
Repayments of unsecured notes	(54,301)	0
Proceeds from unsecured term loan	70,000	0
Proceeds from secured term loan	245,000	0
Debt financing costs paid	(4,455)	(6,641)
Shares used for employee taxes upon vesting of share awards	(952)	(2,935)
Redemption of limited partnership units	0	(4,006)
Distributions paid to shareholders	(65,438)	(65,315)
Distributions to noncontrolling interest	(196)	(255)
Net cash provided by financing activities	101,158	111,848
Increase in cash and cash equivalents and restricted cash	24,600	1,480
Cash and cash equivalents and restricted cash at beginning of period	18,387	28,300
Cash and cash equivalents and restricted cash at end of period	42,987	29,780
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	17,551	27,463
Restricted cash, beginning of period	836	837
Cash and cash equivalents and restricted cash at beginning of period	18,387	28,300
Cash and cash equivalents, end of period	32,111	28,849
Restricted cash, end of period	10,876	931
Cash and cash equivalents and restricted cash at end of period	42,987	29,780
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the six months ended June 30, 2023 and 2022 of $8,587 and $4,442, respectively	50,480	37,961
Cash paid for income taxes	550	902
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,957	32,800
Change in investment in real estate ventures as a result of deconsolidation	8,595	0
Change in operating real estate from deconsolidation of operating properties	(7,814)	0
Change in other assets as a result of investing activities	0	13,396
Change in capital expenditures financed through accounts payable at period end	1,292	10,283
Change in capital expenditures financed through retention payable at period end	$ 2,039	$ (1,097)

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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Statement of Cash Flows [Abstract]
Capitalized interest	$ 8,587	$ 4,442

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CONSOLIDATED BALANCE SHEETS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Real estate investments:
Operating properties	$ 3,597,211	$ 3,617,240
Accumulated depreciation	(1,125,145)	(1,063,060)
Right of use asset - operating leases, net	19,346	19,664
Operating real estate investments, net	2,491,412	2,573,844
Construction-in-progress	245,677	218,869
Land held for development	71,493	76,499
Prepaid leasehold interests in land held for development, net	27,762	35,576
Total real estate investments, net	2,836,344	2,904,788
Assets held for sale, net	52,664	0
Cash and cash equivalents	32,111	17,551
Restricted cash and escrows	10,876	0
Accounts receivable	11,654	11,003
Accrued rent receivable, net of allowance of $3,778 and $3,947 as of June 30, 2023 and December 31, 2022, respectively	183,191	179,771
Investment in unconsolidated real estate ventures	630,505	567,635
Deferred costs, net	95,102	96,639
Intangible assets, net	11,676	18,451
Other assets	90,362	78,667
Total assets	3,954,485	3,874,505
LIABILITIES AND PARTNERS' EQUITY
Mortgage notes payable, net	241,383	0
Unsecured credit facility	0	88,500
Unsecured term loan, net	318,065	248,168
Unsecured senior notes, net	1,574,373	1,628,370
Accounts payable and accrued expenses	116,913	132,440
Distributions payable	32,957	32,792
Deferred income, gains and rent	24,786	25,082
Intangible liabilities, net	8,811	10,322
Liabilities related to assets held for sale, net	1,041	0
Lease liability - operating leases	23,268	23,166
Other liabilities	56,228	52,331
Total liabilities	2,397,825	2,241,171
Commitments and contingencies (See Note 14)
Brandywine Operating Partnership, L.P.'s equity:
Accumulated other comprehensive income	5,216	3,897
Total liabilities and beneficiaries' equity	3,954,485	3,874,505
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Real estate investments:
Operating properties	3,597,211	3,617,240
Accumulated depreciation	(1,125,145)	(1,063,060)
Right of use asset - operating leases, net	19,346	19,664
Operating real estate investments, net	2,491,412	2,573,844
Construction-in-progress	245,677	218,869
Land held for development	71,493	76,499
Prepaid leasehold interests in land held for development, net	27,762	35,576
Total real estate investments, net	2,836,344	2,904,788
Assets held for sale, net	52,664	0
Cash and cash equivalents	32,111	17,551
Restricted cash and escrows	10,876	0
Accounts receivable	11,654	11,003
Accrued rent receivable, net of allowance of $3,778 and $3,947 as of June 30, 2023 and December 31, 2022, respectively	183,191	179,771
Investment in unconsolidated real estate ventures	630,505	567,635
Deferred costs, net	95,102	96,639
Intangible assets, net	11,676	18,451
Other assets	90,362	78,667
Total assets	3,954,485	3,874,505
LIABILITIES AND PARTNERS' EQUITY
Mortgage notes payable, net	241,383	0
Unsecured credit facility	0	88,500
Unsecured term loan, net	318,065	248,168
Unsecured senior notes, net	1,574,373	1,628,370
Accounts payable and accrued expenses	116,913	132,440
Distributions payable	32,957	32,792
Deferred income, gains and rent	24,786	25,082
Intangible liabilities, net	8,811	10,322
Liabilities related to assets held for sale, net	1,041	0
Lease liability - operating leases	23,268	23,166
Other liabilities	56,228	52,331
Total liabilities	2,397,825	2,241,171
Commitments and contingencies (See Note 14)
Redeemable limited partnership units at redemption value; 516,467 and 516,467 issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	2,318	3,195
Brandywine Operating Partnership, L.P.'s equity:
General Partnership Capital; $172,101,929 and 171,569,807 units issued and outstanding as of June 30, 2023 and December 31, 2022, respectively	1,546,587	1,623,738
Accumulated other comprehensive income	4,924	3,569
Total Brandywine Operating Partnership, L.P.'s equity	1,551,511	1,627,307
Noncontrolling interest - consolidated real estate ventures	2,831	2,832
Total partners' equity	1,554,342	1,630,139
Total liabilities and beneficiaries' equity	$ 3,954,485	$ 3,874,505

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CONSOLIDATED BALANCE SHEETS - BRANDYWINE OPERATING PARTNERSHIP, L.P. (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Accrued rent receivable, allowance	$ 3,778	$ 3,947
Common stock, shares issued (in shares)	172,101,929	171,569,807
Common stock, shares outstanding (in shares)	172,101,929	171,569,807
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Accrued rent receivable, allowance	$ 3,778	$ 3,947
Common stock, shares issued (in shares)	172,101,929	171,569,807
Common stock, shares outstanding (in shares)	172,101,929	171,569,807
BRANDYWINE OPERATING PARTNERSHIP, L.P. | Class A Units
Redeemable limited partnership units issued (in shares)	516,467	516,467
Redeemable limited partnership units outstanding (in shares)	516,467	516,467

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CONSOLIDATED STATEMENTS OF OPERATIONS - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Revenue
Total revenue	$ 125,882	$ 124,042	$ 255,109	$ 251,547
Operating expenses
Property operating expenses	31,891	33,111	65,485	64,659
Real estate taxes	11,571	13,746	26,173	27,559
Third party management expenses	2,557	2,792	5,196	5,349
Depreciation and amortization	47,079	43,959	92,679	87,741
General and administrative expenses	9,360	8,328	18,842	18,328
Provision for impairment	4,468	0	4,468	0
Total operating expenses	106,926	101,936	212,843	203,636
Gain on sale of real estate
Net gain on disposition of real estate	0	144	0	144
Net gain on sale of undepreciated real estate	0	4,127	781	5,024
Total gain on sale of real estate	0	4,271	781	5,168
Operating income	18,956	26,377	43,047	53,079
Nonoperating Income (Expense) [Abstract]
Interest income	520	449	1,025	889
Interest expense	(23,669)	(16,341)	(46,322)	(32,083)
Interest expense - amortization of deferred financing costs	(1,114)	(805)	(2,141)	(1,514)
Equity in loss of unconsolidated real estate ventures	(7,598)	(4,981)	(13,765)	(9,544)
Net gain on real estate venture transactions	181	0	181	0
Net income (loss) before income taxes	(12,724)	4,699	(17,975)	10,827
Income tax provision	(13)	(48)	(38)	(75)
Net income (loss)	(12,737)	4,651	(18,013)	10,752
Nonforfeitable dividends allocated to unvested restricted shareholders	(204)	(98)	(274)	(246)
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust	$ (12,900)	$ 4,539	$ (18,229)	$ 10,484
Basic income (loss) per Common Partnership Unit (in dollars per share)	$ (0.08)	$ 0.03	$ (0.11)	$ 0.06
Diluted income (loss) per Common Partnership Unit (in dollars per share)	$ (0.08)	$ 0.03	$ (0.11)	$ 0.06
Basic weighted average common partnership units outstanding (in shares)	171,962,162	171,527,031	171,818,463	171,411,631
Diluted weighted average common partnership units outstanding (in shares)	171,962,162	172,260,429	171,818,463	172,575,408
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	$ 125,882	$ 124,042	$ 255,109	$ 251,547
Operating expenses
Property operating expenses	31,891	33,111	65,485	64,659
Real estate taxes	11,571	13,746	26,173	27,559
Third party management expenses	2,557	2,792	5,196	5,349
Depreciation and amortization	47,079	43,959	92,679	87,741
General and administrative expenses	9,360	8,328	18,842	18,328
Provision for impairment	4,468	0	4,468	0
Total operating expenses	106,926	101,936	212,843	203,636
Gain on sale of real estate
Net gain on disposition of real estate	0	144	0	144
Net gain on sale of undepreciated real estate	0	4,127	781	5,024
Total gain on sale of real estate	0	4,271	781	5,168
Operating income	18,956	26,377	43,047	53,079
Nonoperating Income (Expense) [Abstract]
Interest income	520	449	1,025	889
Interest expense	(23,669)	(16,341)	(46,322)	(32,083)
Interest expense - amortization of deferred financing costs	(1,114)	(805)	(2,141)	(1,514)
Equity in loss of unconsolidated real estate ventures	(7,598)	(4,981)	(13,765)	(9,544)
Net gain on real estate venture transactions	181	0	181	0
Net income (loss) before income taxes	(12,724)	4,699	(17,975)	10,827
Income tax provision	(13)	(48)	(38)	(75)
Net income (loss)	(12,737)	4,651	(18,013)	10,752
Net loss attributable to noncontrolling interests - consolidated real estate ventures	0	2	1	4
Net income (loss) attributable to Brandywine Operating Partnership	(12,737)	4,653	(18,012)	10,756
Nonforfeitable dividends allocated to unvested restricted shareholders	(204)	(98)	(274)	(246)
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust	$ (12,941)	$ 4,555	$ (18,286)	$ 10,510
Basic income (loss) per Common Partnership Unit (in dollars per share)	$ (0.08)	$ 0.03	$ (0.11)	$ 0.06
Diluted income (loss) per Common Partnership Unit (in dollars per share)	$ (0.08)	$ 0.03	$ (0.11)	$ 0.06
Basic weighted average common partnership units outstanding (in shares)	172,478,629	172,043,498	172,334,930	171,985,863
Diluted weighted average common partnership units outstanding (in shares)	172,478,629	172,776,896	172,334,930	173,149,640
Rents
Revenue
Total revenue	$ 118,133	$ 116,897	$ 238,981	$ 232,798
Rents | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	118,133	116,897	238,981	232,798
Third party management fees, labor reimbursement and leasing
Revenue
Total revenue	6,227	5,924	12,229	11,032
Third party management fees, labor reimbursement and leasing | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	6,227	5,924	12,229	11,032
Other
Revenue
Total revenue	1,522	1,221	3,899	7,717
Other | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Total revenue	$ 1,522	$ 1,221	$ 3,899	$ 7,717

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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - BRANDYWINE OPERATING PARTNERSHIP, L.P. - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net income (loss)		$ (12,737)	$ 4,651	$ (18,013)	$ 10,752
Comprehensive income:
Unrealized gain on derivative financial instruments		6,646	1,747	1,355	5,511
Amortization of interest rate contracts	[1]	0	188	0	376
Total comprehensive income		6,646	1,935	1,355	5,887
Comprehensive income (loss)		(6,091)	6,586	(16,658)	16,639
Comprehensive loss attributable to noncontrolling interest - consolidated real estate ventures		21	(20)	22	(40)
Comprehensive income (loss) attributable to Brandywine Realty Trust		(6,070)	6,566	(16,636)	16,599
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net income (loss)		(12,737)	4,651	(18,013)	10,752
Comprehensive income:
Unrealized gain on derivative financial instruments		6,646	1,747	1,355	5,511
Amortization of interest rate contracts	[2]	0	188	0	376
Total comprehensive income		6,646	1,935	1,355	5,887
Comprehensive income (loss)		(6,091)	6,586	(16,658)	16,639
Comprehensive loss attributable to noncontrolling interest - consolidated real estate ventures		0	2	1	4
Comprehensive income (loss) attributable to Brandywine Realty Trust		$ (6,091)	$ 6,588	$ (16,657)	$ 16,643

[1] Amounts reclassified from comprehensive income to interest expense within the Consolidated Statements of Operations.

[2] Amounts reclassified from comprehensive income to interest expense within the Consolidated Statements of Operations.

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CONSOLIDATED STATEMENTS OF PARTNERS’ EQUITY - USD ($) $ in Thousands	Total	Accumulated Other Comprehensive Income	Noncontrolling Interest - Consolidated Real Estate Ventures	BRANDYWINE OPERATING PARTNERSHIP, L.P.	BRANDYWINE OPERATING PARTNERSHIP, L.P. Accumulated Other Comprehensive Income	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, 2021							171,126,257
Beginning balance at Dec. 31, 2021				$ 1,690,079	$ (2,366)	$ 2,834	$ 1,689,611
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	$ 6,101		$ 8	6,101		(2)	$ 6,103
Other comprehensive (loss) income	3,952	$ 3,940	12	3,952	3,952
Deferred compensation obligation (in shares)							(19,406)
Deferred compensation obligation	(249)			(249)			$ (249)
Repurchase and retirement of LP units				(4,006)			$ (4,006)
Share-based compensation activity (in shares)							277,061
Share-based compensation activity	1,655			1,655			$ 1,655
Adjustment of redeemable partnership units to liquidation value at period end				3,704			3,704
Distributions declared to general partnership unit holders				(32,711)			$ (32,711)
Ending balance (in shares) at Mar. 31, 2022							171,383,912
Ending balance at Mar. 31, 2022				1,668,525	1,586	2,832	$ 1,664,107
Beginning balance (in shares) at Dec. 31, 2021							171,126,257
Beginning balance at Dec. 31, 2021				1,690,079	(2,366)	2,834	$ 1,689,611
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	10,752			10,752
Other comprehensive (loss) income	5,887			5,887
Ending balance (in shares) at Jun. 30, 2022							171,575,280
Ending balance at Jun. 30, 2022				1,646,504	3,521	2,830	$ 1,640,153
Beginning balance (in shares) at Mar. 31, 2022							171,383,912
Beginning balance at Mar. 31, 2022				1,668,525	1,586	2,832	$ 1,664,107
Increase (Decrease) in Partners' Capital [Roll Forward]
Net income (loss)	4,651		14	4,651		(2)	$ 4,653
Other comprehensive (loss) income	1,935	1,929	6	1,935	1,935
Deferred compensation obligation	0
Issuance of partnership interest in consolidated real estate ventures (in shares)							191,368
Issuance of partnership interest in consolidated real estate ventures				1,917			$ 1,917
Share-based compensation activity	1,917			2,181			2,181
Adjustment of redeemable partnership units to liquidation value at period end				(32,705)			$ (32,705)
Distributions declared to general partnership unit holders				0
Ending balance (in shares) at Jun. 30, 2022							171,575,280
Ending balance at Jun. 30, 2022				1,646,504	3,521	2,830	$ 1,640,153
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 income (loss)	(5,276)		(17)	(5,276)		(1)	$ (5,275)
Other comprehensive (loss) income	(5,291)	(5,307)	16	(5,291)	(5,291)
Deferred compensation obligation (in shares)							13,422
Deferred compensation obligation	(88)			(88)			$ (88)
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 income (loss)	(18,013)			(18,013)
Other comprehensive (loss) income	1,355			1,355
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
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 income (loss)	(12,737)		(41)	(12,737)		0	$ (12,737)
Other comprehensive (loss) income	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

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CONSOLIDATED STATEMENTS OF PARTNERS’ EQUITY (Parenthetical) - $ / shares	3 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022
BRANDYWINE OPERATING PARTNERSHIP, L.P. | General Partner Capital
Distributions to general partnership unitholders (in dollars per share)	$ 0.19	$ 0.19	$ 0.19	$ 0.19

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CONSOLIDATED STATEMENTS OF CASH FLOWS - BRANDYWINE OPERATING PARTNERSHIP L.P. - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Cash flows from operating activities:
Net income (loss)	$ (18,013)	$ 10,752
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	92,679	87,741
Amortization of deferred financing costs	2,141	1,514
Amortization of debt discount/(premium), net	(516)	(975)
Amortization of stock compensation costs	6,073	5,419
Straight-line rent income	(4,600)	(5,042)
Amortization of acquired above (below) market leases, net	(760)	(1,664)
Ground rent expense	401	408
Net gain on real estate venture transactions	(181)	0
Total gain on sale of real estate	(781)	(5,168)
Provision for impairment	4,468	0
Loss from unconsolidated real estate ventures, including income distributions	13,765	9,544
Income tax provision	38	75
Changes in assets and liabilities:
Accounts receivable	(469)	(1,254)
Other assets	(12,604)	(2,711)
Accounts payable and accrued expenses	(21,271)	(19,484)
Deferred income, gains and rent	285	(2,487)
Other liabilities	649	1,826
Net cash provided by operating activities	61,304	78,494
Cash flows from investing activities:
Acquisition of properties	0	(3,446)
Proceeds from the sale of properties	0	34,146
Capital expenditures for tenant improvements	(24,431)	(35,545)
Capital expenditures for redevelopments	(34,827)	(56,472)
Capital expenditures for developments	(18,341)	(82,252)
Advances for the purchase of tenant assets, net of repayments	(26)	(447)
Investment in unconsolidated real estate ventures	(60,290)	(27,807)
Deposits for real estate	3,500	(7,550)
Capital distributions from unconsolidated real estate ventures	2,250	5,720
Leasing costs paid	(5,697)	(15,209)
Net cash used in investing activities	(137,862)	(188,862)
Cash flows from financing activities:
Proceeds from credit facility borrowings	136,000	196,000
Repayments of credit facility borrowings	(224,500)	(5,000)
Repayments of unsecured notes	(54,301)	0
Proceeds from unsecured term loan	70,000	0
Proceeds from secured term loan	245,000	0
Debt financing costs paid	(4,455)	(6,641)
Shares used for employee taxes upon vesting of share awards	(952)	(2,935)
Redemption of limited partnership units	0	(4,006)
Distributions paid to shareholders	(65,438)	(65,315)
Net cash provided by financing activities	101,158	111,848
Increase in cash and cash equivalents and restricted cash	24,600	1,480
Cash and cash equivalents and restricted cash at beginning of period	18,387	28,300
Cash and cash equivalents and restricted cash at end of period	42,987	29,780
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	17,551	27,463
Restricted cash, beginning of period	836	837
Cash and cash equivalents and restricted cash at beginning of period	18,387	28,300
Cash and cash equivalents, end of period	32,111	28,849
Restricted cash, end of period	10,876	931
Cash and cash equivalents and restricted cash at end of period	42,987	29,780
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the six months ended June 30, 2023 and 2022 of $8,587 and $4,442, respectively	50,480	37,961
Cash paid for income taxes	550	902
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,957	32,800
Change in investment in real estate ventures as a result of deconsolidation	8,595	0
Change in operating real estate from deconsolidation of operating properties	(7,814)	0
Change in other assets as a result of investing activities	0	13,396
Change in capital expenditures financed through accounts payable at period end	1,292	10,283
Change in capital expenditures financed through retention payable at period end	2,039	(1,097)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Cash flows from operating activities:
Net income (loss)	(18,013)	10,752
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	92,679	87,741
Amortization of deferred financing costs	2,141	1,514
Amortization of debt discount/(premium), net	(516)	(975)
Amortization of stock compensation costs	6,073	5,419
Straight-line rent income	(4,600)	(5,042)
Amortization of acquired above (below) market leases, net	(760)	(1,664)
Ground rent expense	401	408
Net gain on real estate venture transactions	(181)	0
Total gain on sale of real estate	(781)	(5,168)
Provision for impairment	4,468	0
Loss from unconsolidated real estate ventures, including income distributions	13,765	9,544
Income tax provision	38	75
Changes in assets and liabilities:
Accounts receivable	(469)	(1,254)
Other assets	(12,604)	(2,711)
Accounts payable and accrued expenses	(21,271)	(19,484)
Deferred income, gains and rent	285	(2,487)
Other liabilities	649	1,826
Net cash provided by operating activities	61,304	78,494
Cash flows from investing activities:
Acquisition of properties	0	(3,446)
Proceeds from the sale of properties	0	34,146
Capital expenditures for tenant improvements	(24,431)	(35,545)
Capital expenditures for redevelopments	(34,827)	(56,472)
Capital expenditures for developments	(18,341)	(82,252)
Advances for the purchase of tenant assets, net of repayments	(26)	(447)
Investment in unconsolidated real estate ventures	(60,290)	(27,807)
Deposits for real estate	3,500	(7,550)
Capital distributions from unconsolidated real estate ventures	2,250	5,720
Leasing costs paid	(5,697)	(15,209)
Net cash used in investing activities	(137,862)	(188,862)
Cash flows from financing activities:
Proceeds from credit facility borrowings	136,000	196,000
Repayments of credit facility borrowings	(224,500)	(5,000)
Repayments of unsecured notes	(54,301)	0
Proceeds from unsecured term loan	70,000	0
Proceeds from secured term loan	245,000	0
Debt financing costs paid	(4,455)	(6,641)
Shares used for employee taxes upon vesting of share awards	(952)	(2,935)
Redemption of limited partnership units	0	(4,006)
Distributions paid to shareholders	(65,634)	(65,570)
Net cash provided by financing activities	101,158	111,848
Increase in cash and cash equivalents and restricted cash	24,600	1,480
Cash and cash equivalents and restricted cash at beginning of period	18,387	28,300
Cash and cash equivalents and restricted cash at end of period	42,987	29,780
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	17,551	27,463
Restricted cash, beginning of period	836	837
Cash and cash equivalents and restricted cash at beginning of period	18,387	28,300
Cash and cash equivalents, end of period	32,111	28,849
Restricted cash, end of period	10,876	931
Cash and cash equivalents and restricted cash at end of period	42,987	29,780
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the six months ended June 30, 2023 and 2022 of $8,587 and $4,442, respectively	50,480	37,961
Cash paid for income taxes	550	902
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,957	32,800
Change in investment in real estate ventures as a result of deconsolidation	8,595	0
Change in operating real estate from deconsolidation of operating properties	(7,814)	0
Change in other assets as a result of investing activities	0	13,396
Change in capital expenditures financed through accounts payable at period end	1,292	10,283
Change in capital expenditures financed through retention payable at period end	$ 2,039	$ (1,097)

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CONSOLIDATED STATEMENTS OF CASH FLOWS - BRANDYWINE OPERATING PARTNERSHIP L.P. (Parenthetical) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022
Capitalized interest	$ 8,587	$ 4,442
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Capitalized interest	$ 8,587	$ 4,442

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ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP

6 Months Ended

Jun. 30, 2023

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 June 30, 2023, 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 June 30, 2023, the Company owned 76 properties that contained an aggregate of approximately 13.4 million net rentable square feet (collectively, the “Properties”). The Company’s core portfolio of operating properties (the “Core Properties”) excludes development properties, redevelopment properties, and properties held for sale. The Properties were comprised of the following as of June 30, 2023:

	Number of Properties	Rentable Square Feet
Office properties	67	11,881,208
Mixed-use properties	5	942,334
Core Properties	72	12,823,542
Development property	2	350,488
Redevelopment properties	2	230,856
The Properties	76	13,404,886

In addition to the Properties, as of June 30, 2023, the Company owned 152.1 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 55.1 additional acres of undeveloped land.  As of June 30, 2023, 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 11.8 million net rentable square feet.

As of June 30, 2023, the Company also owned economic interests in twelve 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 June 30, 2023, the management company subsidiaries were managing properties containing an aggregate of approximately 22.8 million net rentable square feet, of which approximately 13.4 million net rentable square feet related to Properties owned by the Company and approximately 9.4 million net rentable square feet related to properties owned by third parties and unconsolidated real estate ventures.

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

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BASIS OF PRESENTATION

6 Months Ended

Jun. 30, 2023

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 June 30, 2023, the results of its operations for the three and six months ended June 30, 2023 and 2022 and its cash flows for the six months ended June 30, 2023 and 2022. 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, 2022 filed with the SEC on February 21, 2023.

The consolidated balance sheet at December 31, 2022 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, 2022 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, 2022.

Use of Estimates

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“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. Actual results could differ from those estimates. The estimates and assumptions include, but are not limited to, common development cost estimates for the Company’s contributions to development joint ventures. The common development cost estimates for development joint venture contributions are highly judgmental, covering significant future time horizons and are sensitive to cost escalation, sales price escalation and absorption, which are affected by expectations about future market or economic conditions. Actual results could differ from these and other estimates.

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REAL ESTATE INVESTMENTS

6 Months Ended

Jun. 30, 2023

Real Estate [Abstract]

REAL ESTATE INVESTMENTS

3. REAL ESTATE INVESTMENTS

As of June 30, 2023 and December 31, 2022, the gross carrying value of the operating properties was as follows (in thousands):

	June 30, 2023		December 31, 2022
Land	$	398,536	$	403,998
Building and improvements	2,725,168		2,760,357
Tenant improvements	473,507		452,885
Operating properties	$	3,597,211	$	3,617,240
Assets held for sale - real estate investments	52,664		—
Total	$	3,649,875	$	3,617,240

Dispositions

During the first quarter of 2023, the Company deconsolidated $7.8 million recorded in “Prepaid leasehold interests in land held for development, net” on the consolidated balance sheets. This deconsolidation reflects the Company’s contribution, in January 2023, of 200,000 square feet of buildable floor to area ratio (“FAR”) to the Company’s unconsolidated real estate venture, referred to in Note 4 below as the 3151 Market Street Venture, for use by this unconsolidated real estate venture in the development of 3151 Market Street. Upon contribution at fair market value, we recognized a gain, net of transaction costs, of $0.8 million in “Net gain on sale of undepreciated real estate” on the consolidated statements of operations.

Held-for-sale

As of June 30, 2023, the Company was under an agreement to sell to an unaffiliated third party an office property located in the Austin, Texas segment for $53.3 million and has classified the property as held for sale on the consolidated balance sheets. As of June 30, 2023, the carrying value of the of the property was in excess of the fair value less cost to sell. As a result, an impairment loss of $4.5 million was recognized. The estimated fair value is considered Level 3 in accordance with ASC 820 and was based upon the executed agreement of sale. Consummation of the sale is subject to closing conditions and there can be no assurance that the sale will be consummated on expected terms, or at all.

The following is a summary of the property classified as held for sale as of June 30, 2023 (in thousands):

	Held for Sale Properties (a)
	June 30, 2023
ASSETS HELD FOR SALE
Real estate investments:
Operating properties	$	54,701
Accumulated depreciation	(5,388)
Operating real estate investments, net	49,313
Construction-in-progress	370
Total real estate investments, net	49,683
Deferred costs, net	339
Intangible assets, net	1,755
Accrued Rent Receivable	790
Other assets	97
Total assets held for sale, net	$	52,664
LIABILITIES HELD FOR SALE
Mortgage notes payable, net
Deferred income, gains and rent	383
Intangible liabilities, net	658
Total liabilities held for sale, net	$	1,041

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

6 Months Ended

Jun. 30, 2023

Equity Method Investments and Joint Ventures [Abstract]

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

4. INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

As of June 30, 2023, the Company held ownership interests in twelve unconsolidated real estate ventures, with a net aggregate investment balance of $589.2 million, which includes a negative investment balance in one unconsolidated real estate venture of $41.3 million, reflected within “Other liabilities” on the consolidated balance sheets. As of June 30, 2023, five of the real estate ventures owned properties that contained an aggregate of approximately 9.1 million net rentable square feet of office space; two real estate ventures owned 1.4 acres of land held for development; four real estate ventures owned 7.5 acres of land in active development; one real estate venture 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 15% to 78%, using the equity method. Certain of the unconsolidated real estate ventures are subject to specified priority allocations of distributable cash.

The Company earned management fees from the unconsolidated real estate ventures of $2.1 million for both the three months ended June 30, 2023 and 2022, and $4.2 million and $4.0 million for the six months ended June 30, 2023 and 2022, respectively. The Company earned leasing commissions from the unconsolidated real estate ventures of $0.8 million for both the three months ended June 30, 2023 and 2022, and $1.5 million and $1.1 million for the six months ended June 30, 2023 and 2022, respectively

The Company had outstanding accounts receivable balances from the unconsolidated real estate ventures of $3.1 million and $2.9 million for both June 30, 2023 and December 31, 2022, 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.

he following is a summary of the financial position of the unconsolidated real estate ventures in which the Company held interests as of June 30, 2023 and December 31, 2022 (in thousands):

	June 30, 2023		December 31, 2022
Net property	$	2,262,891	$	2,117,226
Other assets	540,399		506,213
Other liabilities	448,432		446,101
Debt, net	1,335,323		1,198,213
Equity (a)	1,019,535		979,125

(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.

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 six-month periods ended June 30, 2023 and 2022 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Revenue	$	59,067	$	64,957	$	116,953	$	118,173
Operating expenses	(30,039)		(31,671)		(58,890)		(60,263)
Interest expense, net	(18,287)		(11,663)		(34,178)		(19,132)
Depreciation and amortization	(24,827)		(27,927)		(49,001)		(49,210)
Net loss	$	(14,086)	$	(6,304)	$	(25,116)	$	(10,432)
Ownership interest %	Various		Various		Various		Various
Company's share of net loss	$	(7,528)	$	(4,822)	$	(13,652)	$	(9,439)
Basis adjustments and other	(70)		(159)		(113)		(105)
Equity in loss of unconsolidated real estate ventures	$	(7,598)	$	(4,981)	$	(13,765)	$	(9,544)

Commerce Square Venture

The properties held by the Commerce Square Venture were encumbered by secured mortgage loans that were set to mature on April 5, 2023. The lender provided the venture with an extension of the maturity date of these loans until June 5, 2023. On June 2, 2023, the loans were refinanced through a new $220.0 million secured mortgage loan facility. The new loan bears an all-in fixed interest rate of 7.79% per annum and matures in June 2028.

In connection with the refinancing, the Company contributed $46.5 million to the venture in exchange for an additional 8% equity interest in the venture.

MAP Venture

The MAP Venture owns 58 office properties that contain an aggregate of 3,924,783 square feet located in the Pennsylvania Suburbs, New Jersey/Delaware, Metropolitan Washington, D.C. and Richmond, Virginia (the “MAP Venture”). The MAP Venture leases the land parcels under the 58 office properties through a ground lease that extends through February 2115. The properties held by the MAP Venture are encumbered by a mortgage on the MAP Venture's leasehold interest in the buildings ("MAP Collateral") and the assignment of the related rents and leases and is nonrecourse to the Company. At June 30 2023, the mortgage balance is $181.0 million, and has a maturity date of August 1, 2023. On July 26, 2023, the lender provided the MAP Venture with an extension until October 1, 2023. The Company and its partner are actively working to recapitalize the MAP Venture and the mortgage debt prior to maturity, but there can be no assurances that the debt will be satisfied or additional extension options will be provided by the existing lender. At June 30, 2023, the Company's negative investment balance was $41.3 million. The Company has no obligation to fund additional equity to the MAP Venture.

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LEASES

6 Months Ended

Jun. 30, 2023

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 six months ended June 30, 2023 and 2022 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
Lease Revenue	2023		2022		2023		2022
Fixed contractual payments	$	92,969	$	88,672	$	184,651	$	177,435
Variable lease payments	22,335		25,234		48,850		49,565
Total	$	115,304	$	113,906	$	233,501	$	227,000

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INTANGIBLE ASSETS AND LIABILITIES

6 Months Ended

Jun. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS AND LIABILITIES

6. INTANGIBLE ASSETS AND LIABILITIES

As of June 30, 2023 and December 31, 2022, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	June 30, 2023
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	44,325	$	(32,746)	$	11,579
Tenant relationship value	110		(50)		60
Above market leases acquired	178		(141)		37
Total intangible assets, net	$	44,613	$	(32,937)	$	11,676
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	18,230	$	(9,419)	$	8,811

	December 31, 2022
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	55,715	$	(37,437)	$	18,278
Tenant relationship value	167		(104)		63
Above market leases acquired	331		(221)		110
Total intangible assets, net	$	56,213	$	(37,762)	$	18,451
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	20,985	$	(10,663)	$	10,322

As of June 30, 2023, the Company’s annual amortization for its intangible assets/liabilities, assuming no prospective early lease terminations, was as follows (dollars in thousands):

	Assets		Liabilities
2023 (six months remaining)	$	4,496	$	730
2024	2,786		1,299
2025	1,905		1,023
2026	1,093		739
2027	808		623
Thereafter	588		4,397
Total	$	11,676	$	8,811

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DEBT OBLIGATIONS

6 Months Ended

Jun. 30, 2023

Debt Disclosure [Abstract]

DEBT OBLIGATIONS

7. DEBT OBLIGATIONS

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of June 30, 2023 and December 31, 2022 (in thousands):

	June 30, 2023		December 31, 2022		Effective Interest Rate		Maturity Date
SECURED DEBT:
$245.0M 5.88% Secured Term Loan due 2028	$	245,000	—		5.88%		February 2028
Less: deferred financing costs	(3,617)		—
Total Secured indebtedness	$	241,383	$	—
UNSECURED DEBT
$600 million Unsecured Credit Facility	$	—	$	88,500	SOFR + 1.15%		June 2026	(a)
Term Loan - Swapped to fixed	250,000		250,000		SOFR + 1.30%		June 2027	(b)
$70.0 million Term Loan	70,000		—		SOFR + 1.85%		February 2024	(a)(c)
$350.0M 3.95% Guaranteed Notes due 2023	—		54,301		3.87%		February 2023	(d)
$350.0M 4.10% Guaranteed Notes due 2024	350,000		350,000		3.78%		October 2024
$450.0M 3.95% Guaranteed Notes due 2027	450,000		450,000		4.03%		November 2027
$350.0M 7.55% Guaranteed Notes due 2028	350,000		350,000		7.73%		March 2028
$350.0M 4.55% Guaranteed Notes due 2029	350,000		350,000		4.30%		October 2029
Indenture IA (Preferred Trust I)	27,062		27,062		LIBOR + 1.25%	(e)	March 2035
Indenture IB (Preferred Trust I)	25,774		25,774		LIBOR + 1.25%	(e)	April 2035
Indenture II (Preferred Trust II)	25,774		25,774		LIBOR + 1.25%	(e)	July 2035
Principal balance outstanding	1,898,610		1,971,411
Plus: original issue premium (discount), net	2,417		2,934
Less: deferred financing costs	(8,589)		(9,307)
Total unsecured indebtedness	$	1,892,438	$	1,965,038
Total Debt Obligations	$	2,133,821	$	1,965,038

(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 of 5.01% and matures on June 30, 2027. The effective date of the swap was January 31, 2023.

(c)The maturity date of the $70.0 million unsecured term loan is subject to a 12 month optional extension upon customary terms and conditions.

(d)On January 20, 2023, the Company redeemed in full its then outstanding 3.95% Guaranteed Notes due 2023 (the “2023 Notes”). The aggregate redemption price of the 2023 Notes was approximately $55.2 million (approximately $54.3 million in principal and approximately $0.92 million of accrued and unpaid interest).

(e)On July 1, 2023, the stated rate of interest was replaced with 3-month CME Term SOFR + 1.51%. The rate will be in effect as the existing 3-month LIBOR interest periods expire over the next three months.

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, 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 1.05% 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 three months ended June 30, 2023, the weighted-average interest rate on Unsecured Credit Facility borrowings was 5.62%, resulting in $0.4 million of interest expense for such period.

Secured Facility due 2028

On January 19, 2023, seven indirect wholly-owned subsidiaries of the Company entered into a term loan agreement secured by seven operating properties in the aggregate principal amount of $245.0 million (the “Secured Facility”). The Secured Facility has a scheduled maturity date of February 6, 2028 and may be prepaid in full on or after March 6, 2025, subject to a prepayment premium, and may be prepaid in full on or after August 6, 2027 without any prepayment premium. The Secured Facility bears interest at 5.88% per year through the maturity date and is interest-only (payable monthly) through the maturity date.

2023 Unsecured Term Loan

On March 1, 2023, the Company entered into an unsecured one-year term loan agreement in the aggregate principal amount of $70.0 million (the “2023 Term Loan”). The 2023 Term Loan has a scheduled maturity date of February 28, 2024 with an option to extend for an additional twelve months upon customary terms and conditions. The 2023 Term Loan bears interest at Daily Simple SOFR plus 1.75%, with a 0.10% SOFR adjustment per year through the maturity date and is interest-only (payable monthly) through the maturity date.

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 June 30, 2023. Certain of the covenants restrict the Company’s ability to obtain alternative sources of capital.

As of June 30, 2023, the aggregate scheduled principal payments on the Company’s consolidated debt obligations were as follows (in thousands):

2023 (six months remaining)	$	—
2024	350,000
2025	70,000
2026	—
2027	700,000
Thereafter	1,023,610
Total principal payments	2,143,610
Net unamortized premiums/(discounts)	2,417
Net deferred financing costs	(12,206)
Outstanding indebtedness	$	2,133,821

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FAIR VALUE OF FINANCIAL INSTRUMENTS

6 Months Ended

Jun. 30, 2023

Fair Value Disclosures [Abstract]

FAIR VALUE OF FINANCIAL INSTRUMENTS

8. FAIR VALUE OF FINANCIAL INSTRUMENTS

Financial assets and liabilities recorded on the 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 June 30, 2023 and December 31, 2022, 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 June 30, 2023 and December 31, 2022 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):

	June 30, 2023				December 31, 2022
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,495,763	$	1,269,445	$	1,549,760	$	1,411,351
Variable rate debt	$	396,675	$	354,862	$	415,278	$	386,988
Secured fixed rate debt	$	241,383	$	234,244	$	—	$	—

(a)Net of deferred financing costs of $6.7 million and $7.5 million for unsecured notes payable, $1.9 million and $1.8 million for variable rate debt and $3.6 million and $0.0 million for secured fixed rate debt as of June 30, 2023 and December 31, 2022.

The Company used quoted market prices as of June 30, 2023 and December 31, 2022 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 June 30, 2023 and December 31, 2022. 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 June 30, 2023. Current estimates of fair value may differ from the amounts presented herein.

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DERIVATIVE FINANCIAL INSTRUMENTS

6 Months Ended

Jun. 30, 2023

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 June 30, 2023 and December 31, 2022. 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
				6/30/2023		12/31/2022						6/30/2023		12/31/2022
Assets/(Liabilities)
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	3.729	%	November 23, 2022	June 30, 2027	$	2,897	$	255
				$	250,000	$	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.

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LIMITED PARTNERS' NONCONTROLLING INTERESTS IN THE PARENT COMPANY

6 Months Ended

Jun. 30, 2023

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 $4.7 million and $4.9 million as of June 30, 2023 and December 31, 2022, respectively. Under the applicable accounting guidance, the redemption value of the redeemable common limited partnership units are 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 June 30, 2023) was approximately $2.4 million and $3.2 million as of June 30, 2023 and December 31, 2022, respectively.

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BENEFICIARIES' EQUITY OF THE PARENT COMPANY

6 Months Ended

Jun. 30, 2023

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 June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(12,737)	$	(12,737)	$	4,651	$	4,651
Net (income) loss attributable to noncontrolling interests	41		41		(14)		(14)
Nonforfeitable dividends allocated to unvested restricted shareholders	(204)		(204)		(98)		(98)
Net income (loss) attributable to common shareholders	$	(12,900)	$	(12,900)	$	4,539	$	4,539
Denominator
Weighted-average shares outstanding	171,962,162		171,962,162		171,527,031		171,527,031
Contingent securities/Share based compensation	—		—		—		733,398
Weighted-average shares outstanding	171,962,162		171,962,162		171,527,031		172,260,429
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders	$	(0.08)	$	(0.08)	$	0.03	$	0.03

	Six Months Ended June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(18,013)	$	(18,013)	$	10,752	$	10,752
Net (income) loss attributable to noncontrolling interests	58		58		(22)		(22)
Nonforfeitable dividends allocated to unvested restricted shareholders	(274)		(274)		(246)		(246)
Net income (loss) attributable to common shareholders	$	(18,229)	$	(18,229)	$	10,484	$	10,484
Denominator
Weighted-average shares outstanding	171,818,463		171,818,463		171,411,631		171,411,631
Contingent securities/Share based compensation	—		—		—		1,163,777
Weighted-average shares outstanding	171,818,463		171,818,463		171,411,631		172,575,408
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders	$	(0.11)	$	(0.11)	$	0.06	$	0.06

Redeemable common limited partnership units totaling 516,467 at June 30, 2023 and June 30, 2022, were excluded from the diluted earnings per share computations because they are not dilutive.

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 six months ended June 30, 2023 and 2022, 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 May 25, 2023, the Parent Company declared a distribution of $0.19 per common share, totaling $32.9 million, which was paid on July 20, 2023 to shareholders of record as of July 6, 2023.

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 six months ended June 30, 2023 and June 30, 2022, the Company did not repurchase any common shares.

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PARTNERS' EQUITY OF THE PARENT COMPANY

6 Months Ended

Jun. 30, 2023

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 June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(12,737)	$	(12,737)	$	4,651	$	4,651
Net loss attributable to noncontrolling interests	—		—		2		2
Nonforfeitable dividends allocated to unvested restricted unitholders	(204)		(204)		(98)		(98)
Net income (loss) attributable to common unitholders	$	(12,941)	$	(12,941)	$	4,555	$	4,555
Denominator
Weighted-average units outstanding	172,478,629		172,478,629		172,043,498		172,043,498
Contingent securities/Share based compensation	—		—		—		733,398
Total weighted-average units outstanding	172,478,629		172,478,629		172,043,498		172,776,896
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common unitholders	$	(0.08)	$	(0.08)	$	0.03	$	0.03

	Six Months Ended June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(18,013)	$	(18,013)	$	10,752	$	10,752
Net loss attributable to noncontrolling interests	1		1		4		4
Nonforfeitable dividends allocated to unvested restricted unitholders	(274)		(274)		(246)		(246)
Net income (loss) attributable to common unitholders	$	(18,286)	$	(18,286)	$	10,510	$	10,510
Denominator
Weighted-average units outstanding	172,334,930		172,334,930		171,985,863		171,985,863
Contingent securities/Share based compensation	—		—		—		1,163,777
Total weighted-average units outstanding	172,334,930		172,334,930		171,985,863		173,149,640
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common unitholders	$	(0.11)	$	(0.11)	$	0.06	$	0.06

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 six months ended June 30, 2023 and 2022, 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 May 25, 2023, the Operating Partnership declared a distribution of $0.19 per common partnership unit, totaling $32.9 million, which was paid on July 20, 2023 to unitholders of record as of July 6, 2023.

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 six months ended June 30, 2023 and June 30, 2022, the Company did not repurchase any units.

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SEGMENT INFORMATION

6 Months Ended

Jun. 30, 2023

Segment Reporting [Abstract]

SEGMENT INFORMATION

13. SEGMENT INFORMATION

As of June 30, 2023, 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 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. Beginning on January 1, 2023, the properties that were historically part of the Metro Washington D.C. segment are reflected in the other reportable segment. The operations for the Metro Washington D.C. segment for the three and six months ended June 30, 2023 and real estate investments as of June 30, 2023 and December 31, 2022, as detailed below, have been included in the Other reportable segment. The following tables provide selected asset information and results of operations of the Company’s reportable segments (in thousands):

Real estate investments, at cost:
	June 30, 2023		December 31, 2022
Philadelphia CBD	$	1,519,616	$	1,517,801
Pennsylvania Suburbs	906,584		878,546
Austin, Texas	798,229		851,835
Total Core Segments	3,224,429		3,248,182
Other	372,782		369,058
	$	3,597,211	$	3,617,240
Assets held for sale (a)	52,664		—
Operating Properties	$	3,649,875	$	3,617,240
Corporate
Right of use asset - operating leases, net	$	19,346	$	19,664
Construction-in-progress	$	245,677	$	218,869
Land held for development	$	71,493	$	76,499
Prepaid leasehold interests in land held for development, net	$	27,762	$	35,576

Net operating income:

	Three Months Ended June 30,
	2023						2022
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	56,671	$	(20,257)	$	36,414	$	55,426	$	(20,538)	$	34,888
Pennsylvania Suburbs	32,102		(10,084)		22,018		31,333		(10,258)		21,075
Austin, Texas	23,781		(8,683)		15,098		23,921		(10,438)		13,483
Other	8,888		(4,850)		4,038		9,405		(5,458)		3,947
Corporate	4,440		(2,145)		2,295		3,957		(2,957)		1,000
Operating properties	$	125,882	$	(46,019)	$	79,863	$	124,042	$	(49,649)	$	74,393

	Six Months Ended June 30,
	2023						2022
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	112,898	$	(40,843)	$	72,055	$	108,897	$	(40,281)	$	68,616
Pennsylvania Suburbs	64,873		(19,863)		45,010		63,140		(20,416)		42,724
Austin, Texas	49,018		(19,977)		29,041		48,836		(20,731)		28,105
Other	18,277		(10,262)		8,015		18,204		(10,896)		7,308
Corporate	10,043		(5,909)		4,134		12,470		(5,243)		7,227
Operating properties	$	255,109	$	(96,854)	$	158,255	$	251,547	$	(97,567)	$	153,980

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 venture
	As of				Three Months Ended June 30,
	June 30, 2023		December 31, 2022		2023		2022
Philadelphia CBD	$	452,365	$	387,301	$	(4,412)	$	(2,574)
Metropolitan Washington, D.C.	82,603		83,903		(1,414)		(381)
Mid-Atlantic Office JV	28,791		31,005		223		(101)
MAP Venture	(41,310)		(35,411)		(1,995)		(1,925)
Austin, Texas	66,746		65,426		—		—
Total	$	589,195	$	532,224	$	(7,598)	$	(4,981)

Net operating income (“NOI”) is a non-GAAP financial measure, which we define 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 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 June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Net income (loss)	$	(12,737)	$	4,651	$	(18,013)	$	10,752
Plus:
Interest expense	23,669		16,341		46,322		32,083
Interest expense - amortization of deferred financing costs	1,114		805		2,141		1,514
Depreciation and amortization	47,079		43,959		92,679		87,741
General and administrative expenses	9,360		8,328		18,842		18,328
Equity in loss of unconsolidated real estate ventures	7,598		4,981		13,765		9,544
Provision for impairment	4,468		—		4,468		—
Less:
Interest income	520		449		1,025		889
Income tax provision	(13)		(48)		(38)		(75)
Net gain on disposition of real estate	—		144		—		144
Net gain on sale of undepreciated real estate	—		4,127		781		5,024
Net gain on real estate venture transactions	181		—		181		—
Consolidated net operating income	$	79,863	$	74,393	$	158,255	$	153,980

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COMMITMENTS AND CONTINGENCIES

6 Months Ended

Jun. 30, 2023

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 June 30, 2023, the Company’s unconsolidated real estate ventures had aggregate indebtedness of $1,341.0 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. As of June 30, 2023, it is expected the project will require $12.7 million of additional equity funding through the project completion date. Similarly, 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. With respect to the construction loan obtained by 3025 JFK Venture on July 23, 2021, the Company has also provided a carry guarantee and limited payment guarantee up to 25% of the principal balance of the $186.7 million construction loan. As of June 30, 2023, 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. The partner is responsible for up to $37.0 million of additional construction costs. Thereafter, if a construction loan has not been obtained, the Company would be responsible to fund the balance of the development costs and would be funded through the use of its credit facilities and cash on hand. In addition, with respect to the One Uptown Ventures, the Company has provided completion guarantees and environmental indemnities in favor of its partner. As of June 30, 2023, it is expected the project will require $10.0 million of additional equity funding through the project completion date. Furthermore, in addition to completion guarantees, environmental indemnities and guarantees of exceptions to nonrecourse loan provisions in favor of the lenders for the One Uptown Ventures, 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 and $85.0 million construction loans, respectively.

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 June 30, 2023, had $6.6 million of future fixed contractual obligations. The Company also committed to fund additional contributions under the program. As of June 30, 2023, the Company estimates that these additional contributions, which are not fixed under the terms of agreement, will be $2.2 million.

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.

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BASIS OF PRESENTATION (Policies)

6 Months Ended

Jun. 30, 2023

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 June 30, 2023, the results of its operations for the three and six months ended June 30, 2023 and 2022 and its cash flows for the six months ended June 30, 2023 and 2022. 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, 2022 filed with the SEC on February 21, 2023.

The consolidated balance sheet at December 31, 2022 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, 2022 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, 2022.

Use of Estimates

Use of EstimatesThe preparation of financial statements in conformity with accounting principles generally accepted in the United States of America (“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. Actual results could differ from those estimates. The estimates and assumptions include, but are not limited to, common development cost estimates for the Company’s contributions to development joint ventures. The common development cost estimates for development joint venture contributions are highly judgmental, covering significant future time horizons and are sensitive to cost escalation, sales price escalation and absorption, which are affected by expectations about future market or economic conditions. Actual results could differ from these and other estimates.

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

6 Months Ended

Jun. 30, 2023

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”) excludes development properties, redevelopment properties, and properties held for sale. The Properties were comprised of the following as of June 30, 2023:

	Number of Properties	Rentable Square Feet
Office properties	67	11,881,208
Mixed-use properties	5	942,334
Core Properties	72	12,823,542
Development property	2	350,488
Redevelopment properties	2	230,856
The Properties	76	13,404,886

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REAL ESTATE INVESTMENTS (Tables)

6 Months Ended

Jun. 30, 2023

Real Estate [Abstract]

Schedule of Gross Carrying Value of Operating Properties

As of June 30, 2023 and December 31, 2022, the gross carrying value of the operating properties was as follows (in thousands):

	June 30, 2023		December 31, 2022
Land	$	398,536	$	403,998
Building and improvements	2,725,168		2,760,357
Tenant improvements	473,507		452,885
Operating properties	$	3,597,211	$	3,617,240
Assets held for sale - real estate investments	52,664		—
Total	$	3,649,875	$	3,617,240

Schedule of Properties Classified as Held for Sale

The following is a summary of the property classified as held for sale as of June 30, 2023 (in thousands):

	Held for Sale Properties (a)
	June 30, 2023
ASSETS HELD FOR SALE
Real estate investments:
Operating properties	$	54,701
Accumulated depreciation	(5,388)
Operating real estate investments, net	49,313
Construction-in-progress	370
Total real estate investments, net	49,683
Deferred costs, net	339
Intangible assets, net	1,755
Accrued Rent Receivable	790
Other assets	97
Total assets held for sale, net	$	52,664
LIABILITIES HELD FOR SALE
Mortgage notes payable, net
Deferred income, gains and rent	383
Intangible liabilities, net	658
Total liabilities held for sale, net	$	1,041

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES (Tables)

6 Months Ended

Jun. 30, 2023

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 June 30, 2023 and December 31, 2022 (in thousands):

	June 30, 2023		December 31, 2022
Net property	$	2,262,891	$	2,117,226
Other assets	540,399		506,213
Other liabilities	448,432		446,101
Debt, net	1,335,323		1,198,213
Equity (a)	1,019,535		979,125

(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.

Schedule of Results Of Unconsolidated Real Estate Ventures

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 six-month periods ended June 30, 2023 and 2022 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Revenue	$	59,067	$	64,957	$	116,953	$	118,173
Operating expenses	(30,039)		(31,671)		(58,890)		(60,263)
Interest expense, net	(18,287)		(11,663)		(34,178)		(19,132)
Depreciation and amortization	(24,827)		(27,927)		(49,001)		(49,210)
Net loss	$	(14,086)	$	(6,304)	$	(25,116)	$	(10,432)
Ownership interest %	Various		Various		Various		Various
Company's share of net loss	$	(7,528)	$	(4,822)	$	(13,652)	$	(9,439)
Basis adjustments and other	(70)		(159)		(113)		(105)
Equity in loss of unconsolidated real estate ventures	$	(7,598)	$	(4,981)	$	(13,765)	$	(9,544)

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LEASES (Tables)

6 Months Ended

Jun. 30, 2023

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 six months ended June 30, 2023 and 2022 (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
Lease Revenue	2023		2022		2023		2022
Fixed contractual payments	$	92,969	$	88,672	$	184,651	$	177,435
Variable lease payments	22,335		25,234		48,850		49,565
Total	$	115,304	$	113,906	$	233,501	$	227,000

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INTANGIBLE ASSETS AND LIABILITIES (Tables)

6 Months Ended

Jun. 30, 2023

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Intangible Assets and Liabilities

As of June 30, 2023 and December 31, 2022, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	June 30, 2023
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	44,325	$	(32,746)	$	11,579
Tenant relationship value	110		(50)		60
Above market leases acquired	178		(141)		37
Total intangible assets, net	$	44,613	$	(32,937)	$	11,676
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	18,230	$	(9,419)	$	8,811

	December 31, 2022
	Total Cost		Accumulated Amortization		Intangible Assets, net
Intangible assets, net:
In-place lease value	$	55,715	$	(37,437)	$	18,278
Tenant relationship value	167		(104)		63
Above market leases acquired	331		(221)		110
Total intangible assets, net	$	56,213	$	(37,762)	$	18,451
	Total Cost		Accumulated Amortization		Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	20,985	$	(10,663)	$	10,322

Schedule of Amortization for Intangible Assets and Liabilities

As of June 30, 2023, the Company’s annual amortization for its intangible assets/liabilities, assuming no prospective early lease terminations, was as follows (dollars in thousands):

	Assets		Liabilities
2023 (six months remaining)	$	4,496	$	730
2024	2,786		1,299
2025	1,905		1,023
2026	1,093		739
2027	808		623
Thereafter	588		4,397
Total	$	11,676	$	8,811

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DEBT OBLIGATIONS (Tables)

6 Months Ended

Jun. 30, 2023

Debt Disclosure [Abstract]

Schedule of Consolidated Debt Obligations

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of June 30, 2023 and December 31, 2022 (in thousands):

	June 30, 2023		December 31, 2022		Effective Interest Rate		Maturity Date
SECURED DEBT:
$245.0M 5.88% Secured Term Loan due 2028	$	245,000	—		5.88%		February 2028
Less: deferred financing costs	(3,617)		—
Total Secured indebtedness	$	241,383	$	—
UNSECURED DEBT
$600 million Unsecured Credit Facility	$	—	$	88,500	SOFR + 1.15%		June 2026	(a)
Term Loan - Swapped to fixed	250,000		250,000		SOFR + 1.30%		June 2027	(b)
$70.0 million Term Loan	70,000		—		SOFR + 1.85%		February 2024	(a)(c)
$350.0M 3.95% Guaranteed Notes due 2023	—		54,301		3.87%		February 2023	(d)
$350.0M 4.10% Guaranteed Notes due 2024	350,000		350,000		3.78%		October 2024
$450.0M 3.95% Guaranteed Notes due 2027	450,000		450,000		4.03%		November 2027
$350.0M 7.55% Guaranteed Notes due 2028	350,000		350,000		7.73%		March 2028
$350.0M 4.55% Guaranteed Notes due 2029	350,000		350,000		4.30%		October 2029
Indenture IA (Preferred Trust I)	27,062		27,062		LIBOR + 1.25%	(e)	March 2035
Indenture IB (Preferred Trust I)	25,774		25,774		LIBOR + 1.25%	(e)	April 2035
Indenture II (Preferred Trust II)	25,774		25,774		LIBOR + 1.25%	(e)	July 2035
Principal balance outstanding	1,898,610		1,971,411
Plus: original issue premium (discount), net	2,417		2,934
Less: deferred financing costs	(8,589)		(9,307)
Total unsecured indebtedness	$	1,892,438	$	1,965,038
Total Debt Obligations	$	2,133,821	$	1,965,038

(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 of 5.01% and matures on June 30, 2027. The effective date of the swap was January 31, 2023.

(c)The maturity date of the $70.0 million unsecured term loan is subject to a 12 month optional extension upon customary terms and conditions.

(d)On January 20, 2023, the Company redeemed in full its then outstanding 3.95% Guaranteed Notes due 2023 (the “2023 Notes”). The aggregate redemption price of the 2023 Notes was approximately $55.2 million (approximately $54.3 million in principal and approximately $0.92 million of accrued and unpaid interest).

(e)On July 1, 2023, the stated rate of interest was replaced with 3-month CME Term SOFR + 1.51%. The rate will be in effect as the existing 3-month LIBOR interest periods expire over the next three months.

Schedule of Maturities of Long-term Debt

As of June 30, 2023, the aggregate scheduled principal payments on the Company’s consolidated debt obligations were as follows (in thousands):

2023 (six months remaining)	$	—
2024	350,000
2025	70,000
2026	—
2027	700,000
Thereafter	1,023,610
Total principal payments	2,143,610
Net unamortized premiums/(discounts)	2,417
Net deferred financing costs	(12,206)
Outstanding indebtedness	$	2,133,821

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FAIR VALUE OF FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2023

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):

	June 30, 2023				December 31, 2022
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,495,763	$	1,269,445	$	1,549,760	$	1,411,351
Variable rate debt	$	396,675	$	354,862	$	415,278	$	386,988
Secured fixed rate debt	$	241,383	$	234,244	$	—	$	—

(a)Net of deferred financing costs of $6.7 million and $7.5 million for unsecured notes payable, $1.9 million and $1.8 million for variable rate debt and $3.6 million and $0.0 million for secured fixed rate debt as of June 30, 2023 and December 31, 2022.

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DERIVATIVE FINANCIAL INSTRUMENTS (Tables)

6 Months Ended

Jun. 30, 2023

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 June 30, 2023 and December 31, 2022. 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
				6/30/2023		12/31/2022						6/30/2023		12/31/2022
Assets/(Liabilities)
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	3.729	%	November 23, 2022	June 30, 2027	$	2,897	$	255
				$	250,000	$	250,000

(a)Hedging unsecured variable rate debt.

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BENEFICIARIES' EQUITY OF THE PARENT COMPANY (Tables)

6 Months Ended

Jun. 30, 2023

Equity [Abstract]

Schedule of Earnings Per Share (EPS), 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 June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(12,737)	$	(12,737)	$	4,651	$	4,651
Net (income) loss attributable to noncontrolling interests	41		41		(14)		(14)
Nonforfeitable dividends allocated to unvested restricted shareholders	(204)		(204)		(98)		(98)
Net income (loss) attributable to common shareholders	$	(12,900)	$	(12,900)	$	4,539	$	4,539
Denominator
Weighted-average shares outstanding	171,962,162		171,962,162		171,527,031		171,527,031
Contingent securities/Share based compensation	—		—		—		733,398
Weighted-average shares outstanding	171,962,162		171,962,162		171,527,031		172,260,429
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders	$	(0.08)	$	(0.08)	$	0.03	$	0.03

	Six Months Ended June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(18,013)	$	(18,013)	$	10,752	$	10,752
Net (income) loss attributable to noncontrolling interests	58		58		(22)		(22)
Nonforfeitable dividends allocated to unvested restricted shareholders	(274)		(274)		(246)		(246)
Net income (loss) attributable to common shareholders	$	(18,229)	$	(18,229)	$	10,484	$	10,484
Denominator
Weighted-average shares outstanding	171,818,463		171,818,463		171,411,631		171,411,631
Contingent securities/Share based compensation	—		—		—		1,163,777
Weighted-average shares outstanding	171,818,463		171,818,463		171,411,631		172,575,408
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders	$	(0.11)	$	(0.11)	$	0.06	$	0.06

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 June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(12,737)	$	(12,737)	$	4,651	$	4,651
Net loss attributable to noncontrolling interests	—		—		2		2
Nonforfeitable dividends allocated to unvested restricted unitholders	(204)		(204)		(98)		(98)
Net income (loss) attributable to common unitholders	$	(12,941)	$	(12,941)	$	4,555	$	4,555
Denominator
Weighted-average units outstanding	172,478,629		172,478,629		172,043,498		172,043,498
Contingent securities/Share based compensation	—		—		—		733,398
Total weighted-average units outstanding	172,478,629		172,478,629		172,043,498		172,776,896
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common unitholders	$	(0.08)	$	(0.08)	$	0.03	$	0.03

	Six Months Ended June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(18,013)	$	(18,013)	$	10,752	$	10,752
Net loss attributable to noncontrolling interests	1		1		4		4
Nonforfeitable dividends allocated to unvested restricted unitholders	(274)		(274)		(246)		(246)
Net income (loss) attributable to common unitholders	$	(18,286)	$	(18,286)	$	10,510	$	10,510
Denominator
Weighted-average units outstanding	172,334,930		172,334,930		171,985,863		171,985,863
Contingent securities/Share based compensation	—		—		—		1,163,777
Total weighted-average units outstanding	172,334,930		172,334,930		171,985,863		173,149,640
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common unitholders	$	(0.11)	$	(0.11)	$	0.06	$	0.06

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PARTNERS' EQUITY OF THE PARENT COMPANY (Tables)

6 Months Ended

Jun. 30, 2023

Equity [Abstract]

Schedule of Earnings Per Share (EPS), 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 June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(12,737)	$	(12,737)	$	4,651	$	4,651
Net (income) loss attributable to noncontrolling interests	41		41		(14)		(14)
Nonforfeitable dividends allocated to unvested restricted shareholders	(204)		(204)		(98)		(98)
Net income (loss) attributable to common shareholders	$	(12,900)	$	(12,900)	$	4,539	$	4,539
Denominator
Weighted-average shares outstanding	171,962,162		171,962,162		171,527,031		171,527,031
Contingent securities/Share based compensation	—		—		—		733,398
Weighted-average shares outstanding	171,962,162		171,962,162		171,527,031		172,260,429
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders	$	(0.08)	$	(0.08)	$	0.03	$	0.03

	Six Months Ended June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(18,013)	$	(18,013)	$	10,752	$	10,752
Net (income) loss attributable to noncontrolling interests	58		58		(22)		(22)
Nonforfeitable dividends allocated to unvested restricted shareholders	(274)		(274)		(246)		(246)
Net income (loss) attributable to common shareholders	$	(18,229)	$	(18,229)	$	10,484	$	10,484
Denominator
Weighted-average shares outstanding	171,818,463		171,818,463		171,411,631		171,411,631
Contingent securities/Share based compensation	—		—		—		1,163,777
Weighted-average shares outstanding	171,818,463		171,818,463		171,411,631		172,575,408
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders	$	(0.11)	$	(0.11)	$	0.06	$	0.06

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 June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(12,737)	$	(12,737)	$	4,651	$	4,651
Net loss attributable to noncontrolling interests	—		—		2		2
Nonforfeitable dividends allocated to unvested restricted unitholders	(204)		(204)		(98)		(98)
Net income (loss) attributable to common unitholders	$	(12,941)	$	(12,941)	$	4,555	$	4,555
Denominator
Weighted-average units outstanding	172,478,629		172,478,629		172,043,498		172,043,498
Contingent securities/Share based compensation	—		—		—		733,398
Total weighted-average units outstanding	172,478,629		172,478,629		172,043,498		172,776,896
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common unitholders	$	(0.08)	$	(0.08)	$	0.03	$	0.03

	Six Months Ended June 30,
	2023				2022
	Basic		Diluted		Basic		Diluted
Numerator
Net income (loss)	$	(18,013)	$	(18,013)	$	10,752	$	10,752
Net loss attributable to noncontrolling interests	1		1		4		4
Nonforfeitable dividends allocated to unvested restricted unitholders	(274)		(274)		(246)		(246)
Net income (loss) attributable to common unitholders	$	(18,286)	$	(18,286)	$	10,510	$	10,510
Denominator
Weighted-average units outstanding	172,334,930		172,334,930		171,985,863		171,985,863
Contingent securities/Share based compensation	—		—		—		1,163,777
Total weighted-average units outstanding	172,334,930		172,334,930		171,985,863		173,149,640
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common unitholders	$	(0.11)	$	(0.11)	$	0.06	$	0.06

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SEGMENT INFORMATION (Tables)

6 Months Ended

Jun. 30, 2023

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:
	June 30, 2023		December 31, 2022
Philadelphia CBD	$	1,519,616	$	1,517,801
Pennsylvania Suburbs	906,584		878,546
Austin, Texas	798,229		851,835
Total Core Segments	3,224,429		3,248,182
Other	372,782		369,058
	$	3,597,211	$	3,617,240
Assets held for sale (a)	52,664		—
Operating Properties	$	3,649,875	$	3,617,240
Corporate
Right of use asset - operating leases, net	$	19,346	$	19,664
Construction-in-progress	$	245,677	$	218,869
Land held for development	$	71,493	$	76,499
Prepaid leasehold interests in land held for development, net	$	27,762	$	35,576

Net operating income:

	Three Months Ended June 30,
	2023						2022
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	56,671	$	(20,257)	$	36,414	$	55,426	$	(20,538)	$	34,888
Pennsylvania Suburbs	32,102		(10,084)		22,018		31,333		(10,258)		21,075
Austin, Texas	23,781		(8,683)		15,098		23,921		(10,438)		13,483
Other	8,888		(4,850)		4,038		9,405		(5,458)		3,947
Corporate	4,440		(2,145)		2,295		3,957		(2,957)		1,000
Operating properties	$	125,882	$	(46,019)	$	79,863	$	124,042	$	(49,649)	$	74,393

	Six Months Ended June 30,
	2023						2022
	Total revenue		Operating expenses (a)		Net operating income		Total revenue		Operating expenses (a)		Net operating income
Philadelphia CBD	$	112,898	$	(40,843)	$	72,055	$	108,897	$	(40,281)	$	68,616
Pennsylvania Suburbs	64,873		(19,863)		45,010		63,140		(20,416)		42,724
Austin, Texas	49,018		(19,977)		29,041		48,836		(20,731)		28,105
Other	18,277		(10,262)		8,015		18,204		(10,896)		7,308
Corporate	10,043		(5,909)		4,134		12,470		(5,243)		7,227
Operating properties	$	255,109	$	(96,854)	$	158,255	$	251,547	$	(97,567)	$	153,980

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 venture
	As of				Three Months Ended June 30,
	June 30, 2023		December 31, 2022		2023		2022
Philadelphia CBD	$	452,365	$	387,301	$	(4,412)	$	(2,574)
Metropolitan Washington, D.C.	82,603		83,903		(1,414)		(381)
Mid-Atlantic Office JV	28,791		31,005		223		(101)
MAP Venture	(41,310)		(35,411)		(1,995)		(1,925)
Austin, Texas	66,746		65,426		—		—
Total	$	589,195	$	532,224	$	(7,598)	$	(4,981)

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 June 30,				Six Months Ended June 30,
	2023		2022		2023		2022
Net income (loss)	$	(12,737)	$	4,651	$	(18,013)	$	10,752
Plus:
Interest expense	23,669		16,341		46,322		32,083
Interest expense - amortization of deferred financing costs	1,114		805		2,141		1,514
Depreciation and amortization	47,079		43,959		92,679		87,741
General and administrative expenses	9,360		8,328		18,842		18,328
Equity in loss of unconsolidated real estate ventures	7,598		4,981		13,765		9,544
Provision for impairment	4,468		—		4,468		—
Less:
Interest income	520		449		1,025		889
Income tax provision	(13)		(48)		(38)		(75)
Net gain on disposition of real estate	—		144		—		144
Net gain on sale of undepreciated real estate	—		4,127		781		5,024
Net gain on real estate venture transactions	181		—		181		—
Consolidated net operating income	$	79,863	$	74,393	$	158,255	$	153,980

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ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP - Narrative (Details)	6 Months Ended
	Jun. 30, 2023 ft² a property parcel
Organization of The Parent Company and The Operating Partnership [Line Items]
Number of real estate properties | property	76
Rentable Square Feet	13,404,886
Unconsolidated Properties | Unconsolidated Real Estate Ventures
Organization of The Parent Company and The Operating Partnership [Line Items]
Number of real estate properties | property	12
Parent Company
Organization of The Parent Company and The Operating Partnership [Line Items]
Rentable Square Feet	11,800,000
Areas of land held for development (in acres) | a	152.1
Lease agreement term	99 years
Area of additional undeveloped parcels of land with option to purchase (in acres) | a	55.1
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]
Rentable Square Feet	22,800,000
Wholly-owned Management Company Subsidiaries | Wholly Owned Properties
Organization of The Parent Company and The Operating Partnership [Line Items]
Rentable Square Feet	13,400,000
Wholly-owned Management Company Subsidiaries | Partially Owned Properties
Organization of The Parent Company and The Operating Partnership [Line Items]
Rentable Square Feet	9,400,000
Brandywine Operating Partnership LP
Organization of The Parent Company and The Operating Partnership [Line Items]
Ownership in the operating partnership	99.70%

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ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP - Summary of Core Portfolio of Operating Properties and Excludes Development, Redevelopment and Held for Sale (Details)	Jun. 30, 2023 ft² property
Real Estate Properties [Line Items]
Number of Properties | property	76
Rentable Square Feet | ft²	13,404,886
Core Properties
Real Estate Properties [Line Items]
Number of Properties | property	72
Rentable Square Feet | ft²	12,823,542
Office properties
Real Estate Properties [Line Items]
Number of Properties | property	67
Rentable Square Feet | ft²	11,881,208
Mixed-use properties
Real Estate Properties [Line Items]
Number of Properties | property	5
Rentable Square Feet | ft²	942,334
Development property
Real Estate Properties [Line Items]
Number of Properties | property	2
Rentable Square Feet | ft²	350,488
Redevelopment properties
Real Estate Properties [Line Items]
Number of Properties | property	2
Rentable Square Feet | ft²	230,856

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REAL ESTATE INVESTMENTS - Schedule of Gross Carrying Value of Operating Properties (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Long Lived Assets Held-for-sale [Line Items]
Total	$ 3,649,875	$ 3,617,240
Discontinued Operations
Long Lived Assets Held-for-sale [Line Items]
Total	52,664	0
Continuing Operations
Long Lived Assets Held-for-sale [Line Items]
Land	398,536	403,998
Building and improvements	2,725,168	2,760,357
Tenant improvements	473,507	452,885
Total	$ 3,597,211	$ 3,617,240

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REAL ESTATE INVESTMENTS - Narrative (Details) ft² in Thousands, $ in Millions		3 Months Ended	6 Months Ended
	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Jan. 30, 2023 ft²
Austin, Texas | Held-for-sale
Real Estate Properties [Line Items]
Consideration	$ 53.3		$ 53.3
Impairment charge	$ 4.5
Leaseholds and Leasehold Improvements | 3151 Market Street
Real Estate Properties [Line Items]
Operating lease costs, capitalized		$ 7.8
Rentable area (in square feet) | ft²				200
Net gain from remeasurment of investment in real estate ventures			$ 0.8

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REAL ESTATE INVESTMENTS - Schedule of Properties Classified as Held for Sale (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Real estate investments:
Accumulated depreciation	$ (1,125,145)	$ (1,063,060)
Operating real estate investments, net	3,597,211	3,617,240
Total real estate investments, net	2,836,344	2,904,788
Deferred costs, net	95,102	96,639
Intangible assets, net	11,676	18,451
Other assets	90,362	78,667
Total assets	3,954,485	3,874,505
LIABILITIES HELD FOR SALE
Mortgage notes payable, net	241,383	0
Deferred income, gains and rent	24,786	25,082
Intangible liabilities, net	8,811	10,322
Total liabilities	2,397,825	$ 2,241,171
Held-for-sale | Pennsylvania suburbs segment
Real estate investments:
Total real estate investments, net	49,683
Deferred costs, net	339
Intangible assets, net	1,755
Accrued Rent Receivable	790
Other assets	97
Total assets	52,664
LIABILITIES HELD FOR SALE
Mortgage notes payable, net
Deferred income, gains and rent	383
Intangible liabilities, net	658
Total liabilities	1,041
Held-for-sale | Pennsylvania suburbs segment | Real Estate Excluding Construction In Progress
Real estate investments:
Operating properties	54,701
Accumulated depreciation	(5,388)
Operating real estate investments, net	49,313
Held-for-sale | Pennsylvania suburbs segment | Construction in Progress
Real estate investments:
Operating real estate investments, net	$ 370

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Narrative (Details) $ in Thousands, ft² in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023 USD ($) a ft² property apartment	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) a ft² property apartment	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of real estate properties	76		76
Accounts receivable | $	$ 11,654		$ 11,654		$ 11,003
Real Estate Venture
Schedule of Equity Method Investments [Line Items]
Accounts receivable | $	3,100		3,100		$ 2,900
Management Fees | Real Estate Venture
Schedule of Equity Method Investments [Line Items]
Service and other revenue | $	2,100	$ 2,100	4,200	$ 4,000
Leasing Commission Income | Real Estate Venture
Schedule of Equity Method Investments [Line Items]
Service and other revenue | $	800	$ 800	1,500	$ 1,100
Unconsolidated Real Estate Ventures
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated real estate ventures | $	$ 589,200		$ 589,200
Unconsolidated Real Estate Ventures | Minimum
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	15.00%		15.00%
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	5		5
Rentable area (in square feet) | ft²	9.1		9.1
Unconsolidated Real Estate Ventures | Other Liabilities
Schedule of Equity Method Investments [Line Items]
Investment in unconsolidated real estate ventures | $	$ 41,300		$ 41,300
Unconsolidated Real Estate Ventures | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Number of real estate properties	12		12
Number of properties with negative investment balances	1		1
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

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Summary of Financial Position of Real Estate Ventures (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021
Schedule of Equity Method Investments [Line Items]
Net property	$ 2,836,344		$ 2,904,788
Other assets	90,362		78,667
Other liabilities	56,228		52,331
Debt, net	2,133,821		1,965,038
Equity	1,556,660	$ 1,593,218	1,633,334	$ 1,651,563	$ 1,675,863	$ 1,701,219
Investment In Nonconsolidated Real Estate
Schedule of Equity Method Investments [Line Items]
Net property	2,262,891		2,117,226
Other assets	540,399		506,213
Other liabilities	448,432		446,101
Debt, net	1,335,323		1,198,213
Equity	$ 1,019,535		$ 979,125

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Summary of Results of Operations of Real Estate Ventures with Interests (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Schedule of Equity Method Investments [Line Items]
Revenue	$ 125,882		$ 124,042		$ 255,109	$ 251,547
Operating expenses	(106,926)		(101,936)		(212,843)	(203,636)
Interest expense, net	(23,669)		(16,341)		(46,322)	(32,083)
Depreciation and amortization	(47,079)		(43,959)		(92,679)	(87,741)
Net income (loss)	(12,737)	$ (5,276)	4,651	$ 6,101	(18,013)	10,752
Equity in loss of unconsolidated real estate ventures	(7,598)		(4,981)		(13,765)	(9,544)
Investment In Nonconsolidated Real Estate
Schedule of Equity Method Investments [Line Items]
Revenue	59,067		64,957		116,953	118,173
Operating expenses	(30,039)		(31,671)		(58,890)	(60,263)
Interest expense, net	(18,287)		(11,663)		(34,178)	(19,132)
Depreciation and amortization	(24,827)		(27,927)		(49,001)	(49,210)
Net income (loss)	(14,086)		(6,304)		(25,116)	(10,432)
Company's share of net loss	(7,528)		(4,822)		(13,652)	(9,439)
Basis adjustments and other	$ (70)		$ (159)		$ (113)	$ (105)

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - Commerce Square Venture (Details) - USD ($)	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 02, 2023
Schedule of Equity Method Investments [Line Items]
Payments to acquire investment	$ 60,290,000	$ 27,807,000
Secured fixed rate debt | Common Ownership Interest Securities
Schedule of Equity Method Investments [Line Items]
Debt instrument, face amount			$ 220,000,000
Commerce Square Venture
Schedule of Equity Method Investments [Line Items]
Payments to acquire investment	$ 46,500,000
Commerce Square Venture | Common Ownership Interest Securities
Schedule of Equity Method Investments [Line Items]
Equity method investment, ownership percentage	8.00%
Commerce Square Venture | Secured fixed rate debt
Schedule of Equity Method Investments [Line Items]
Debt instrument, interest rate, stated percentage			7.79%

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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - MAP Venture (Details) $ in Thousands	Jun. 30, 2023 USD ($) ft² property	Dec. 31, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Negative investment in real estate ventures	$ 589,195	$ 532,224
Variable Interest Entity, Not Primary Beneficiary | MAP Venture
Schedule of Equity Method Investments [Line Items]
Number of office properties owned | property	58
Rentable area (in square feet) | ft²	3,924,783
Number of properties subject to ground leases | property	58
Negative investment in real estate ventures	$ 41,300
Variable Interest Entity, Not Primary Beneficiary | MAP Venture | Secured fixed rate debt
Schedule of Equity Method Investments [Line Items]
Capitalized financing costs	$ 181,000

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LEASES (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Leases [Abstract]
Fixed contractual payments	$ 92,969	$ 88,672	$ 184,651	$ 177,435
Variable lease payments	22,335	25,234	48,850	49,565
Total	$ 115,304	$ 113,906	$ 233,501	$ 227,000

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INTANGIBLE ASSETS AND LIABILITIES - Summary of Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Intangible Assets [Line Items]
Total Cost	$ 44,613	$ 56,213
Accumulated Amortization	(32,937)	(37,762)
Intangible Assets, net	11,676	18,451
Total Cost	18,230	20,985
Accumulated Amortization	(9,419)	(10,663)
Intangible Liabilities, net	8,811	10,322
In-place lease value
Intangible Assets [Line Items]
Total Cost	44,325	55,715
Accumulated Amortization	(32,746)	(37,437)
Intangible Assets, net	11,579	18,278
Tenant relationship value
Intangible Assets [Line Items]
Total Cost	110	167
Accumulated Amortization	(50)	(104)
Intangible Assets, net	60	63
Above market leases acquired
Intangible Assets [Line Items]
Total Cost	178	331
Accumulated Amortization	(141)	(221)
Intangible Assets, net	$ 37	$ 110

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INTANGIBLE ASSETS AND LIABILITIES - Summary of Annual Amortization of Intangible Assets, Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Assets
2023 (six months remaining)	$ 4,496
2024	2,786
2025	1,905
2026	1,093
2027	808
Thereafter	588
Intangible Assets, net	11,676	$ 18,451
Liabilities
2023 (six months remaining)	730
2024	1,299
2025	1,023
2026	739
2027	623
Thereafter	4,397
Intangible Liabilities, net	$ 8,811	$ 10,322

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DEBT OBLIGATIONS - Schedule of Consolidated Debt Obligations Outstanding (Details) - USD ($)					6 Months Ended
	Jul. 01, 2023	Mar. 01, 2023	Jan. 20, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022	Nov. 23, 2022
Consolidated debt obligations
Principal balance outstanding					$ 2,143,610,000
Plus: original issue premium (discount), net					2,417,000
Less: deferred financing costs					(12,206,000)
Debt, net					2,133,821,000		$ 1,965,038,000
Repayments of unsecured notes					54,301,000	$ 0
SECURED DEBT
Consolidated debt obligations
Principal balance outstanding					241,383,000		0
Less: deferred financing costs					(3,617,000)		0
SECURED DEBT | $245.0M 5.88% Secured Term Loan due 2028
Consolidated debt obligations
Debt instrument, face amount					$ 245,000,000.0
Debt instrument, interest rate, stated percentage					5.88%
Principal balance outstanding					$ 245,000,000		0
Effective interest rate					5.88%
UNSECURED DEBT
Consolidated debt obligations
Principal balance outstanding					$ 1,898,610,000		1,971,411,000
Plus: original issue premium (discount), net					2,417,000		2,934,000
Less: deferred financing costs					(8,589,000)		(9,307,000)
Debt, net					1,892,438,000		1,965,038,000
UNSECURED DEBT | $600 million Unsecured Credit Facility
Consolidated debt obligations
Debt instrument, face amount					600,000,000
Principal balance outstanding					$ 0		88,500,000
UNSECURED DEBT | $600 million Unsecured Credit Facility | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Consolidated debt obligations
Spread on variable rate					1.15%
UNSECURED DEBT | $600 million Unsecured Credit Facility | Daily SOFR Adjustment
Consolidated debt obligations
Spread on variable rate				0.10%	0.10%
UNSECURED DEBT | Term Loan - Swapped to fixed
Consolidated debt obligations
Debt instrument, face amount								$ 250,000,000
Debt instrument, interest rate, stated percentage								5.01%
Principal balance outstanding					$ 250,000,000		250,000,000
UNSECURED DEBT | Term Loan - Swapped to fixed | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Consolidated debt obligations
Spread on variable rate					1.30%
UNSECURED DEBT | $70.0 million Term Loan
Consolidated debt obligations
Debt instrument, face amount		$ 70,000,000.0			$ 70,000,000
Principal balance outstanding					$ 70,000,000		0
Extension period					12 months
UNSECURED DEBT | $70.0 million Term Loan | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate
Consolidated debt obligations
Spread on variable rate					1.85%
UNSECURED DEBT | $70.0 million Term Loan | Daily SOFR Adjustment
Consolidated debt obligations
Spread on variable rate		0.10%			0.10%
UNSECURED DEBT | $350.0M 3.95% Guaranteed Notes due 2023
Consolidated debt obligations
Debt instrument, face amount					$ 350,000,000.0
Debt instrument, interest rate, stated percentage			3.95%		3.95%
Principal balance outstanding					$ 0		54,301,000
Effective interest rate					3.87%
Repayments of unsecured notes			$ 55,200,000
Redemption on remaining principal amount			54,300,000
Interest payable			$ 920,000
UNSECURED DEBT | $350.0M 4.10% Guaranteed Notes due 2024
Consolidated debt obligations
Debt instrument, face amount					$ 350,000,000.0
Debt instrument, interest rate, stated percentage					4.10%
Principal balance outstanding					$ 350,000,000		350,000,000
Effective interest rate					3.78%
UNSECURED DEBT | $450.0M 3.95% Guaranteed Notes due 2027
Consolidated debt obligations
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%
UNSECURED DEBT | $350.0M 7.55% Guaranteed Notes due 2028
Consolidated debt obligations
Debt instrument, face amount					$ 350,000,000.0
Debt instrument, interest rate, stated percentage					7.55%
Principal balance outstanding					$ 350,000,000		350,000,000
Effective interest rate					7.73%
UNSECURED DEBT | $350.0M 4.55% Guaranteed Notes due 2029
Consolidated debt obligations
Debt instrument, face amount					$ 350,000,000.0
Debt instrument, interest rate, stated percentage					4.55%
Principal balance outstanding					$ 350,000,000		350,000,000
Effective interest rate					4.30%
UNSECURED DEBT | Indenture IA (Preferred Trust I)
Consolidated debt obligations
Principal balance outstanding					$ 27,062,000		27,062,000
UNSECURED DEBT | Indenture IA (Preferred Trust I) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Subsequent Event
Consolidated debt obligations
Spread on variable rate	1.51%
UNSECURED DEBT | Indenture IA (Preferred Trust I) | LIBOR
Consolidated debt obligations
Spread on variable rate					1.25%
UNSECURED DEBT | Indenture IB (Preferred Trust I)
Consolidated debt obligations
Principal balance outstanding					$ 25,774,000		25,774,000
UNSECURED DEBT | Indenture IB (Preferred Trust I) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Subsequent Event
Consolidated debt obligations
Spread on variable rate	1.51%
UNSECURED DEBT | Indenture IB (Preferred Trust I) | LIBOR
Consolidated debt obligations
Spread on variable rate					1.25%
UNSECURED DEBT | Indenture II (Preferred Trust II)
Consolidated debt obligations
Principal balance outstanding					$ 25,774,000		$ 25,774,000
UNSECURED DEBT | Indenture II (Preferred Trust II) | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate | Subsequent Event
Consolidated debt obligations
Spread on variable rate	1.51%
UNSECURED DEBT | Indenture II (Preferred Trust II) | LIBOR
Consolidated debt obligations
Spread on variable rate					1.25%

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DEBT OBLIGATIONS - Narrative (Details)				3 Months Ended	6 Months Ended
	Mar. 01, 2023 USD ($)	Jan. 19, 2023 USD ($) subsidiary property	Jun. 30, 2022	Jun. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)
$600 million Unsecured Credit Facility | Unsecured Debt
Debt Instrument [Line Items]
Maximum borrowing capacity (up to)				$ 600,000,000	$ 600,000,000
Weighted-average interest rate				5.62%	5.62%
Interest expense				$ 400,000
Debt instrument, face amount				600,000,000	$ 600,000,000
$600 million Unsecured Credit Facility | Unsecured Debt | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, Before Adjustment
Debt Instrument [Line Items]
Spread on variable rate					1.05%
$600 million Unsecured Credit Facility | Unsecured Debt | Daily SOFR Adjustment
Debt Instrument [Line Items]
Spread on variable rate			0.10%		0.10%
Secured Facility | Secured fixed rate debt
Debt Instrument [Line Items]
Number of wholly owned subsidiaries participating in a loan agreement | subsidiary		7
Number of operating properties | property		7
Debt instrument, face amount		$ 245,000,000
Debt instrument, interest rate, stated percentage		5.88%
$70.0 million Term Loan | Unsecured Debt
Debt Instrument [Line Items]
Debt instrument, face amount	$ 70,000,000.0			$ 70,000,000	$ 70,000,000
Debt instrument, term	1 year
Extension term	12 months
$70.0 million Term Loan | Unsecured Debt | Secured Overnight Financing Rate (SOFR) Overnight Index Swap Rate, Before Adjustment
Debt Instrument [Line Items]
Spread on variable rate	1.75%
$70.0 million Term Loan | Unsecured Debt | Daily SOFR Adjustment
Debt Instrument [Line Items]
Spread on variable rate	0.10%				0.10%

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DEBT OBLIGATIONS - Scheduled Principal Payments of Debt Obligation, Excluding Amortization of Discounts and Premiums (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Debt Disclosure [Abstract]
2023 (six months remaining)	$ 0
2024	350,000
2025	70,000
2026	0
2027	700,000
Thereafter	1,023,610
Total principal payments	2,143,610
Net unamortized premiums/(discounts)	2,417
Net deferred financing costs	(12,206)
Outstanding indebtedness	$ 2,133,821	$ 1,965,038

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FAIR VALUE OF FINANCIAL INSTRUMENTS - Financial Instruments for which Estimates of Fair Value Differ from Carrying Amounts (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Secured fixed rate debt	$ 241,383	$ 0
Deferred financing costs, net	12,206
Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs, net	8,589	9,307
Secured fixed rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs, net	3,617	0
Carrying Amount | Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unsecured notes payable	1,495,763	1,549,760
Deferred financing costs, net	6,700	7,500
Carrying Amount | Variable rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Variable rate debt	396,675	415,278
Deferred financing costs, net	1,900	1,800
Carrying Amount | Secured fixed rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Secured fixed rate debt	241,383	0
Deferred financing costs, net	3,600	0
Fair Value | Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	1,269,445	1,411,351
Fair Value | Variable rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	354,862	386,988
Fair Value | Secured fixed rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	$ 234,244	$ 0

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DERIVATIVE FINANCIAL INSTRUMENTS (Details) - USD ($)	Jun. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Notional Amount	$ 250,000,000	$ 250,000,000
Swap | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Notional Amount	$ 250,000,000	250,000,000
Strike	3.729%
Asset, fair value	$ 2,897,000	$ 255,000

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LIMITED PARTNERS' NONCONTROLLING INTERESTS IN THE PARENT COMPANY (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Noncontrolling Interest [Abstract]
Aggregate amount related to non-controlling interests classified within equity	$ 4.7	$ 4.9
Settlement value of non controlling interest in operating partnership	$ 2.4	$ 3.2

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BENEFICIARIES' EQUITY OF THE PARENT COMPANY - Schedule of Number of Shares and Net Income Used to Calculate Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator
Net income (loss)	$ (12,737)	$ (5,276)	$ 4,651	$ 6,101	$ (18,013)	$ 10,752
Net (income) loss attributable to noncontrolling interests, Basic	41		(14)		58	(22)
Net (income) loss attributable to noncontrolling interests, Diluted	41		(14)		58	(22)
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic	(204)		(98)		(274)	(246)
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted	(204)		(98)		(274)	(246)
Net income (loss) attributable to Common Shareholders of Brandywine Realty Trust	(12,900)		4,539		(18,229)	10,484
Net income (loss) attributable to common shareholders, diluted	$ (12,900)		$ 4,539		$ (18,229)	$ 10,484
Denominator
Basic weighted average shares outstanding (in shares)	171,962,162		171,527,031		171,818,463	171,411,631
Contingent securities/Share based compensation (in shares)	0		733,398		0	1,163,777
Weighted average shares outstanding, diluted (in shares)	171,962,162		172,260,429		171,818,463	172,575,408
Earnings (loss) per Common Share:
Net income (loss) attributable to common shareholders, Basic (in dollars per share)	$ (0.08)		$ 0.03		$ (0.11)	$ 0.06
Net income (loss) attributable to common shareholders, Diluted (in dollars per share)	$ (0.08)		$ 0.03		$ (0.11)	$ 0.06

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BENEFICIARIES' EQUITY OF THE PARENT COMPANY - Narrative (Details) - USD ($)			3 Months Ended				6 Months Ended
	Jun. 20, 2023	May 25, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022	Jan. 03, 2019
Class of Stock [Line Items]
Distributions declared (in dollars per share)		$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.38
Dividends paid in cash (in dollars per share)	$ 0.19
Dividends, common stock		$ 32,900,000
Stock repurchase program, authorized amount									$ 150,000,000
Shares repurchased and retired (in shares)							0	0
Redeemable Common Limited Partnership Units
Class of Stock [Line Items]
Redeemable common limited partnership units (in shares)							516,467	516,467

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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				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Numerator
Net income (loss)	$ (12,737)	$ (5,276)	$ 4,651	$ 6,101	$ (18,013)	$ 10,752
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic	(204)		(98)		(274)	(246)
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted	$ (204)		$ (98)		$ (274)	$ (246)
Denominator
Weighted average units outstanding, basic (in shares)	171,962,162		171,527,031		171,818,463	171,411,631
Contingent securities/Share based compensation (in shares)	0		733,398		0	1,163,777
Weighted average shares outstanding, diluted (in shares)	171,962,162		172,260,429		171,818,463	172,575,408
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common shareholders, Basic (in dollars per share)	$ (0.08)		$ 0.03		$ (0.11)	$ 0.06
Net income (loss) attributable to common shareholders, Diluted (in dollars per share)	$ (0.08)		$ 0.03		$ (0.11)	$ 0.06
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Numerator
Net income (loss)	$ (12,737)	$ (5,276)	$ 4,651	$ 6,101	$ (18,013)	$ 10,752
Net loss attributable to noncontrolling interests	0		2		1	4
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic	(204)		(98)		(274)	(246)
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted	(204)		(98)		(274)	(246)
Net income (loss) attributable to common unitholders, Basic	(12,941)		4,555		(18,286)	10,510
Net income (loss) attributable to common unitholders, Diluted	$ (12,941)		$ 4,555		$ (18,286)	$ 10,510
Denominator
Weighted average units outstanding, basic (in shares)	172,478,629		172,043,498		172,334,930	171,985,863
Contingent securities/Share based compensation (in shares)	0		733,398		0	1,163,777
Weighted average shares outstanding, diluted (in shares)	172,478,629		172,776,896		172,334,930	173,149,640
Earnings (loss) per Common Partnership Unit:
Net income (loss) attributable to common shareholders, Basic (in dollars per share)	$ (0.08)		$ 0.03		$ (0.11)	$ 0.06
Net income (loss) attributable to common shareholders, Diluted (in dollars per share)	$ (0.08)		$ 0.03		$ (0.11)	$ 0.06

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PARTNERS' EQUITY OF THE PARENT COMPANY - Narrative (Details) $ / shares in Units, $ in Millions					3 Months Ended				6 Months Ended
	Jul. 20, 2023 $ / shares	Jun. 20, 2023 $ / shares	May 25, 2023 USD ($) $ / shares	Jan. 03, 2019	Jun. 30, 2023 $ / shares	Mar. 31, 2023 $ / shares	Jun. 30, 2022 $ / shares	Mar. 31, 2022 $ / shares	Jun. 30, 2023 shares	Jun. 30, 2022 shares
Earnings Per Common Partnership Unit [Line Items]
Distributions declared (in dollars per share)			$ 0.19		$ 0.19	$ 0.19	$ 0.19	$ 0.38
Dividends paid in cash (in dollars per share)		$ 0.19
Dividends, common stock | $			$ 32.9
Shares repurchased and retired (in shares) | shares									0	0
Subsequent Event
Earnings Per Common Partnership Unit [Line Items]
Dividends paid in cash (in dollars per share)	$ 0.19
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Earnings Per Common Partnership Unit [Line Items]
Distributions declared (in dollars per share)			$ 0.19
Dividends, common stock | $			$ 32.9
Repurchase program, ratio of mirror unit of operating partnership retired for each common share repurchased				1

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SEGMENT INFORMATION - Narrative (Details)	6 Months Ended
	Jun. 30, 2023 segment
Segment Reporting [Abstract]
Number of reportable segments	4

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SEGMENT INFORMATION - Real Estate Investments, at Cost of Company's Reportable Segments (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Operating properties	$ 3,597,211	$ 3,617,240
Right of use asset - operating leases, net	19,346	19,664
Construction-in-progress	245,677	218,869
Land held for development	71,493	76,499
Prepaid leasehold interests in land held for development, net	27,762	35,576
Discontinued Operations
Segment Reporting Information [Line Items]
Operating properties	52,664	0
Continuing Operations
Segment Reporting Information [Line Items]
Operating properties	3,649,875	3,617,240
Total Core Segments
Segment Reporting Information [Line Items]
Operating properties	3,224,429	3,248,182
Philadelphia CBD
Segment Reporting Information [Line Items]
Operating properties	1,519,616	1,517,801
Pennsylvania Suburbs
Segment Reporting Information [Line Items]
Operating properties	906,584	878,546
Austin, Texas
Segment Reporting Information [Line Items]
Operating properties	798,229	851,835
Other
Segment Reporting Information [Line Items]
Operating properties	$ 372,782	$ 369,058

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SEGMENT INFORMATION - Net Operating Income of Company's Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting Information [Line Items]
Total revenue	$ 125,882	$ 124,042	$ 255,109	$ 251,547
Operating expenses	(46,019)	(49,649)	(96,854)	(97,567)
Net operating income	79,863	74,393	158,255	153,980
Operating Segments | Philadelphia CBD
Segment Reporting Information [Line Items]
Total revenue	56,671	55,426	112,898	108,897
Operating expenses	(20,257)	(20,538)	(40,843)	(40,281)
Net operating income	36,414	34,888	72,055	68,616
Operating Segments | Pennsylvania Suburbs
Segment Reporting Information [Line Items]
Total revenue	32,102	31,333	64,873	63,140
Operating expenses	(10,084)	(10,258)	(19,863)	(20,416)
Net operating income	22,018	21,075	45,010	42,724
Operating Segments | Austin, Texas
Segment Reporting Information [Line Items]
Total revenue	23,781	23,921	49,018	48,836
Operating expenses	(8,683)	(10,438)	(19,977)	(20,731)
Net operating income	15,098	13,483	29,041	28,105
Operating Segments | Other
Segment Reporting Information [Line Items]
Total revenue	8,888	9,405	18,277	18,204
Operating expenses	(4,850)	(5,458)	(10,262)	(10,896)
Net operating income	4,038	3,947	8,015	7,308
Corporate
Segment Reporting Information [Line Items]
Total revenue	4,440	3,957	10,043	12,470
Operating expenses	(2,145)	(2,957)	(5,909)	(5,243)
Net operating income	$ 2,295	$ 1,000	$ 4,134	$ 7,227

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SEGMENT INFORMATION - Unconsolidated Real Estate Ventures of Company's Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Segment Reporting Information [Line Items]
Investment in real estate ventures	$ 589,195		$ 589,195		$ 532,224
Equity in income (loss) of real estate venture	(7,598)	$ (4,981)	(13,765)	$ (9,544)
Philadelphia CBD
Segment Reporting Information [Line Items]
Investment in real estate ventures	452,365		452,365		387,301
Equity in income (loss) of real estate venture	(4,412)	(2,574)
Metropolitan Washington, D.C.
Segment Reporting Information [Line Items]
Investment in real estate ventures	82,603		82,603		83,903
Equity in income (loss) of real estate venture	(1,414)	(381)
Mid-Atlantic Office JV
Segment Reporting Information [Line Items]
Investment in real estate ventures	28,791		28,791		31,005
Equity in income (loss) of real estate venture	223	(101)
MAP Venture
Segment Reporting Information [Line Items]
Investment in real estate ventures	(41,310)		(41,310)		(35,411)
Equity in income (loss) of real estate venture	(1,995)	(1,925)
Austin, Texas
Segment Reporting Information [Line Items]
Investment in real estate ventures	66,746		$ 66,746		$ 65,426
Equity in income (loss) of real estate venture	$ 0	$ 0

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SEGMENT INFORMATION - Reconciliation of Consolidated Net Income to Consolidated NOI (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting [Abstract]
Net income (loss)	$ (12,737)	$ (5,276)	$ 4,651	$ 6,101	$ (18,013)	$ 10,752
Plus:
Interest expense	23,669		16,341		46,322	32,083
Interest expense - amortization of deferred financing costs	1,114		805		2,141	1,514
Depreciation and amortization	47,079		43,959		92,679	87,741
General and administrative expenses	9,360		8,328		18,842	18,328
Equity in loss of unconsolidated real estate ventures	7,598		4,981		13,765	9,544
Provision for impairment	4,468		0		4,468	0
Less:
Investment income	520		449		1,025	889
Income tax provision	(13)		(48)		(38)	(75)
Net gain on disposition of real estate	0		144		0	144
Net gain on sale of undepreciated real estate	0		4,127		781	5,024
Net gain on real estate venture transactions	181		0		181	0
Consolidated net operating income	$ 79,863		$ 74,393		$ 158,255	$ 153,980

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COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022	Jul. 23, 2021
Loss Contingencies [Line Items]
Investment in real estate ventures	$ 589,195	$ 532,224
Drexel Square
Loss Contingencies [Line Items]
Contractual obligation	6,600
Estimated potential additional contribution obligation	2,200
3151 Market Street
Loss Contingencies [Line Items]
Construction loan amount	37,000
Investment in real estate ventures	316,900
One Uptown 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%
Equity method investment, additional summarized financial information debt	10,000
Construction loan amount			$ 121,700
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
3025 JFK Venture
Loss Contingencies [Line Items]
Construction loan amount			$ 186,700
Unconsolidated Real Estate Ventures
Loss Contingencies [Line Items]
Unconsolidated real estate venture debt at 100%, gross	1,341,000
Equity method investment, additional summarized financial information debt	$ 12,700