10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

_____________________________________________________________________________________________

FORM 10-Q

_____________________________________________________________________________________________

(Mark One)

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

For the quarterly period ended September 30, 2020

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 Walnut Street
Suite 1700
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 170,572,964 Common Shares of Beneficial Interest, par value $0.01 per share of Brandywine Realty Trust, were outstanding as of October 21, 2020.

EXPLANATORY NOTE

This report combines the quarterly reports on Form 10-Q for the period ended September 30, 2020 of Brandywine Realty Trust (the “Parent Company”) and Brandywine Operating Partnership L.P. (the “Operating Partnership”). The Parent Company is a Maryland real estate investment trust, or REIT, that owns its assets and conducts its operations through the Operating Partnership, a Delaware limited partnership, and subsidiaries of the Operating Partnership. The Parent Company, the Operating Partnership and their consolidated subsidiaries are collectively referred to in this report as the “Company”. In addition, as used in this report, terms such as “we”, “us”, and “our” may refer to the Company, the Parent Company, or the Operating Partnership.

The Parent Company is the sole general partner of the Operating Partnership and, as of September 30, 2020, owned a 99.4% interest in the Operating Partnership. The remaining 0.6% 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:

• Consolidated Financial Statements; and

2

• 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, 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 September 30, 2020 and December 31, 2019	5
Consolidated Statements of Operations for the three and nine months ended September 30, 2020 and 2019	6
Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2020 and 2019	7
Consolidated Statements of Beneficiaries’ Equity for the three and nine months ended September 30, 2020 and 2019	8
Consolidated Statements of Cash Flows for the nine months ended September 30, 2020 and 2019	10
Brandywine Operating Partnership, L.P.
Financial Statements of Brandywine Operating Partnership, L.P.	11
Consolidated Balance Sheets as of September 30, 2020 and December 31, 2019	11
Consolidated Statements of Operations for the three and nine months ended September 30, 2020 and 2019	12
Consolidated Statements of Comprehensive Income for the three and nine months ended September 30, 2020 and 2019	13
Consolidated Statements of Partners’ Equity for the three and nine months ended September 30, 2020 and 2019	14
Consolidated Statements of Cash Flows for the nine months ended September 30, 2020 and 2019	16
Notes to Unaudited Consolidated Financial Statements	17
Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations	32
Item 3. Quantitative and Qualitative Disclosures about Market Risk	47
Item 4. Controls and Procedures	48
PART II — OTHER INFORMATION	49
Item 1. Legal Proceedings	49
Item 1A. Risk Factors	49
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds	49
Item 3. Defaults Upon Senior Securities	49
Item 4. Mine Safety Disclosures	49
Item 5. Other Information	49
Item 6. Exhibits	50
Signatures	51

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)

	September 30, 2020			December 31, 2019
ASSETS
Real estate investments:
Operating properties	$	3,715,765		$	4,006,459
Accumulated depreciation	(980,664		)	(973,318		)
Right of use asset - operating leases, net	21,145			21,656
Operating real estate investments, net	2,756,246			3,054,797
Construction-in-progress	186,853			180,718
Land held for development	115,474			96,124
Prepaid leasehold interests in land held for development, net	39,287			39,592
Total real estate investments, net	3,097,860			3,371,231
Assets held for sale, net	7,349			7,349
Cash and cash equivalents	62,256			90,499
Accounts receivable, net of allowance of $0 and $284 as of September 30, 2020 and December 31, 2019, respectively	20,433			16,363
Accrued rent receivable, net of allowance of $6,111 and $7,691 as of September 30, 2020 and December 31, 2019, respectively	159,952			174,144
Investment in Real Estate Ventures	377,486			120,294
Deferred costs, net	90,601			95,560
Intangible assets, net	50,715			84,851
Other assets	124,408			115,678
Total assets	$	3,991,060		$	4,075,969
LIABILITIES AND BENEFICIARIES' EQUITY
Mortgage notes payable, net	$	88,913		$	313,812
Unsecured term loan, net	248,953			248,561
Unsecured senior notes, net	1,581,645			1,582,045
Accounts payable and accrued expenses	117,248			113,347
Distributions payable	32,705			33,815
Deferred income, gains and rent	25,070			35,284
Intangible liabilities, net	17,500			22,263
Lease liability - operating leases	22,707			22,554
Other liabilities	40,537			15,985
Total liabilities	$	2,175,278		$	2,387,666
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; 170,572,964 and 176,480,095 issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	1,707			1,766
Additional paid-in-capital	3,136,851			3,192,158
Deferred compensation payable in common shares	17,516			16,216
Common shares in grantor trust, 1,160,494 and 1,105,542 issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	(17,516		)	(16,216		)
Cumulative earnings	1,091,095			804,556
Accumulated other comprehensive loss	(8,749		)	(2,370		)
Cumulative distributions	(2,415,736		)	(2,318,233		)
Total Brandywine Realty Trust's equity	1,805,168			1,677,877
Noncontrolling interests	10,614			10,426
Total beneficiaries' equity	$	1,815,782		$	1,688,303
Total liabilities and beneficiaries' equity	$	3,991,060		$	4,075,969

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 September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Revenue
Rents	$	121,277		$	139,228		$	392,661		$	415,113
Third party management fees, labor reimbursement and leasing	4,324			4,938			13,339			14,041
Other	505			1,165			2,031			4,224
Total revenue	126,106			145,331			408,031			433,378
Operating expenses
Property operating expenses	31,567			38,358			102,320			116,542
Real estate taxes	14,923			15,247			48,525			47,119
Third party management expenses	2,509			2,469			7,546			7,035
Depreciation and amortization	43,533			55,627			145,314			158,738
General and administrative expenses	7,069			6,974			23,973			25,217
Total operating expenses	99,601			118,675			327,678			354,651
Gain on sale of real estate
Net gain on disposition of real estate	271,901			356			274,487			356
Net gain on sale of undepreciated real estate	—			250			201			1,501
Total gain on sale of real estate	271,901			606			274,688			1,857
Operating income	298,406			27,262			355,041			80,584
Other income (expense):
Interest income	467			558			1,487			1,636
Interest expense	(16,310		)	(20,400		)	(56,510		)	(61,273		)
Interest expense - amortization of deferred financing costs	(715		)	(694		)	(2,195		)	(2,026		)
Equity in loss of Real Estate Ventures	(5,788		)	(1,965		)	(9,882		)	(4,814		)
Net gain on real estate venture transactions	75			2,059			75			3,594
Net income before income taxes	276,135			6,820			288,016			17,701
Income tax (provision) benefit	(2		)	—			224			(46		)
Net income	276,133			6,820			288,240			17,655
Net income attributable to noncontrolling interests	(1,612		)	(48		)	(1,701		)	(155		)
Net income attributable to Brandywine Realty Trust	274,521			6,772			286,539			17,500
Nonforfeitable dividends allocated to unvested restricted shareholders	(93		)	(93		)	(317		)	(305		)
Net income attributable to Common Shareholders of Brandywine Realty Trust	$	274,428		$	6,679		$	286,222		$	17,195
Basic income per Common Share	$	1.61		$	0.04		$	1.66		$	0.10
Diluted income per Common Share	$	1.60		$	0.04		$	1.66		$	0.10
Basic weighted average shares outstanding	170,573,028			176,195,244			172,380,410			176,066,507
Diluted weighted average shares outstanding	171,026,492			176,750,600			172,735,436			176,617,726

 

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 September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Net income	$	276,133		$	6,820		$	288,240		$	17,655
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	1,040			(1,586		)	(6,979		)	(9,209		)
Amortization of interest rate contracts (1)	188			188			564			582
Total comprehensive income (loss)	1,228			(1,398		)	(6,415		)	(8,627		)
Comprehensive income	277,361			5,422			281,825			9,028
Comprehensive income attributable to noncontrolling interest	(1,619		)	(40		)	(1,665		)	(107		)
Comprehensive income attributable to Brandywine Realty Trust	$	275,742		$	5,382		$	280,160		$	8,921

⁽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, beginning of period	176,480,095		1,105,542		$	1,766		$	3,192,158		$	16,216	$	(16,216	)	$	804,556	$	(2,370	)	$	(2,318,233	)	$	10,426		$	1,688,303
Net income																8,022								65			8,087
Other comprehensive loss																		(7,825		)				(44		)	(7,869		)
Repurchase and retirement of Common Shares of Beneficial Interest	(5,644,200	)			(57		)	(53,801		)																	(53,858		)
Share-based compensation activity	142,468		50,967		1			2,030																			2,031
Share Issuance from/(to) Deferred Compensation Plan	(12,376	)	(38,726	)				(193		)	796		(796		)												(193		)
Distributions declared ($0.19 per share)																					(32,500		)	(187		)	(32,687		)
BALANCE, March 31, 2020	170,965,987		1,117,783		$	1,710		$	3,140,194		$	17,012	$	(17,012	)	$	812,578	$	(10,195	)	$	(2,350,733	)	$	10,260		$	1,603,814
Net income																3,996								24			4,020
Other comprehensive income																		225						1			226
Repurchase and retirement of Common Shares of Beneficial Interest	(604,283	)			(5		)	(6,136		)																	(6,141		)
Share-based compensation activity	166,628				2			1,666																			1,668
Share Issuance from/(to) Deferred Compensation Plan	44,827		42,906					(11		)	504		(504		)												(11		)
Reallocation of Noncontrolling interest								(123		)														123			—
Distributions declared ($0.19 per share)																					(32,540		)	(187		)	(32,727		)
BALANCE, June 30, 2020	170,573,159		1,160,689		$	1,707		$	3,135,590		$	17,516	$	(17,516	)	$	816,574	$	(9,970	)	$	(2,383,273	)	$	10,221		$	1,570,849
Net income																274,521								1,612			276,133
Other comprehensive income																		1,221						7			1,228
Impact of deconsolidation of real estate venture																								(1,017		)	(1,017		)
Distributions from consolidated real estate ventures																								(22		)	(22		)
Share-based compensation activity								1,263																			1,263
Share Issuance from/(to) Deferred Compensation Plan	(195	)	(195	)				(2		)																	(2		)
Distributions declared ($0.19 per share)																					(32,463		)	(187		)	(32,650		)
BALANCE, September 30, 2020	170,572,964		1,160,494		$	1,707		$	3,136,851		$	17,516	$	(17,516	)	$	1,091,095	$	(8,749	)	$	(2,415,736	)	$	10,614		$	1,815,782

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, beginning of period	176,873,324		977,120		$	1,770		$	3,200,312		$	14,021		$	(14,021	)	$	775,625		$	5,029		$	(2,183,909	)	$	12,201		$	1,811,028
Cumulative effect of accounting change																	(5,336		)										(5,336		)
Net income																	4,523									60			4,583
Other comprehensive loss																				(2,469		)				(14		)	(2,483		)
Repurchase and retirement of Common Shares of Beneficial Interest	(1,337,169	)			(13		)	(17,268		)																			(17,281		)
Issuance of partnership interest in consolidated real estate ventures																										22			22
Share-based compensation activity	465,883		41,342		4			3,673																					3,677
Share Issuance from/(to) Deferred Compensation Plan	(458	)	(5,920	)							619			(619		)													—
Reallocation of Noncontrolling interest								57																		(57		)	—
Distributions declared ($0.19 per share)																							(33,560		)	(187		)	(33,747		)
BALANCE, March 31, 2019	176,001,580		1,012,542		$	1,761		$	3,186,774		$	14,640		$	(14,640	)	$	774,812		$	2,560		$	(2,217,469	)	$	12,025		$	1,760,463
Net income																	6,205									47			6,252
Other comprehensive loss																				(4,720		)				(26		)	(4,746		)
Issuance of partnership interest in consolidated real estate ventures																										3			3
Redemption of LP Units	1,245							16																		(16		)	—
Share-based compensation activity	94,150				2			1,449																					1,451
Share Issuance from/(to) Deferred Compensation Plan	100,908		100,908								1,599			(1,599		)													—
Distributions declared ($0.19 per share)																							(33,571		)	(187		)	(33,758		)
BALANCE, June 30, 2019	176,197,883		1,113,450		$	1,763		$	3,188,239		$	16,239		$	(16,239	)	$	781,017		$	(2,160	)	$	(2,251,040	)	$	11,846		$	1,729,665
Net income																	6,772									48			6,820
Other comprehensive loss																				(1,390		)				(8		)	(1,398		)
Issuance of partnership interest in consolidated real estate ventures																										2			2
Share-based compensation activity								1,105																					1,105
Share Issuance from/(to) Deferred Compensation Plan	(2,965	)	(7,908	)							(23		)	23															—
Reallocation of Noncontrolling interest								6																		(6		)	—
Distributions declared ($0.19 per share)																							(33,570		)	(187		)	(33,757		)
BALANCE, September 30, 2019	176,194,918		1,105,542		$	1,763		$	3,189,350		$	16,216		$	(16,216	)	$	787,789		$	(3,550	)	$	(2,284,610	)	$	11,695		$	1,702,437

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

9

BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands) 

	Nine Months Ended September 30,
	2020			2019
Cash flows from operating activities:
Net income	$	288,240		$	17,655
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	145,314			158,738
Amortization of deferred financing costs	2,195			2,026
Amortization of debt discount/(premium), net	(55		)	527
Amortization of stock compensation costs	5,544			6,145
Straight-line rent income	(8,903		)	(8,287		)
Amortization of acquired above (below) market leases, net	(3,657		)	(7,236		)
Ground rent expense	1,092			1,103
Provision for doubtful accounts	1,041			611
Net gain on real estate venture transactions	—			(3,594		)
Net gain on sale of interests in real estate	(274,688		)	(1,857		)
Loss from Real Estate Ventures, net of distributions	9,880			5,134
Income tax provision (benefit)	(224		)	46
Changes in assets and liabilities:
Accounts receivable	(6,263		)	2,086
Other assets	(7,527		)	(13,089		)
Accounts payable and accrued expenses	10,782			194
Deferred income, gains and rent	(8,856		)	(3,640		)
Other liabilities	8,549			(1,312		)
Net cash provided by operating activities	162,464			155,250
Cash flows from investing activities:
Acquisition of properties	(11,432		)	—
Proceeds from the sale of properties	122,055			41,546
Proceeds from real estate venture sales	—			675
Proceeds from repayment of mortgage notes receivable	—			3,341
Capital expenditures for tenant improvements	(55,262		)	(53,383		)
Capital expenditures for redevelopments	(18,664		)	(33,905		)
Capital expenditures for developments	(51,435		)	(55,002		)
Advances for the purchase of tenant assets, net of repayments	1,265			(178		)
Investment in unconsolidated Real Estate Ventures	(719		)	(253		)
Deposits for real estate	—			(1,990		)
Capital distributions from Real Estate Ventures	6,916			35,206
Leasing costs paid	(16,747		)	(13,184		)
Net cash used in investing activities	(24,023		)	(77,127		)
Cash flows from financing activities:
Repayments of mortgage notes payable	(6,105		)	(5,669		)
Proceeds from credit facility borrowings	170,500			333,000
Repayments of credit facility borrowings	(170,500		)	(279,000		)
Proceeds from the exercise of stock options	47			800
Shares used for employee taxes upon vesting of share awards	(1,346		)	(1,554		)
Partner contributions to consolidated real estate venture	—			25
Repurchase and retirement of common shares	(60,000		)	(17,282		)
Distributions paid to shareholders	(98,651		)	(100,573		)
Distributions to noncontrolling interest	(561		)	(560		)
Net cash used in financing activities	(166,616		)	(70,813		)
Increase/(Decrease) in cash and cash equivalents and restricted cash	(28,175		)	7,310
Cash and cash equivalents and restricted cash at beginning of year	91,170			23,211
Cash and cash equivalents and restricted cash at end of period	$	62,995		$	30,521
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	$	90,499		$	22,842
Restricted cash, beginning of period	671			369
Cash and cash equivalents and restricted cash, beginning of period	$	91,170		$	23,211
Cash and cash equivalents, end of period	$	62,256		$	29,925
Restricted cash, end of period	739			596
Cash and cash equivalents and restricted cash, end of period	$	62,995		$	30,521
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2020 and 2019 of $3,462 and $2,246, respectively	$	51,733		$	56,455
Cash paid for income taxes	719			1,169
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,705			33,759
Change in investment in real estate ventures as a result of dispositions	—			3,461
Change in operating real estate from deconsolidation of operating properties	269,268			—
Change in investment in real estate ventures from deconsolidation of operating properties	(263,358		)	—
Change in mortgage notes payable from deconsolidation of operating properties	(220,271		)	—
Change in capital expenditures financed through accounts payable at period end	(8,244		)	(6,011		)
Change in capital expenditures financed through retention payable at period end	754			(3,356		)

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)

	September 30, 2020			December 31, 2019
ASSETS
Real estate investments:
Operating properties	$	3,715,765		$	4,006,459
Accumulated depreciation	(980,664		)	(973,318		)
Right of use asset - operating leases, net	21,145			21,656
Operating real estate investments, net	2,756,246			3,054,797
Construction-in-progress	186,853			180,718
Land held for development	115,474			96,124
Prepaid leasehold interests in land held for development, net	39,287			39,592
Total real estate investments, net	3,097,860			3,371,231
Assets held for sale, net	7,349			7,349
Cash and cash equivalents	62,256			90,499
Accounts receivable, net of allowance of $0 and $284 as of September 30, 2020 and December 31, 2019	20,433			16,363
Accrued rent receivable, net of allowance of $6,111 and $7,691 as of September 30, 2020 and December 31, 2019, respectively	159,952			174,144
Investment in Real Estate Ventures	377,486			120,294
Deferred costs, net	90,601			95,560
Intangible assets, net	50,715			84,851
Other assets	124,408			115,678
Total assets	$	3,991,060		$	4,075,969
LIABILITIES AND PARTNERS' EQUITY
Mortgage notes payable, net	$	88,913		$	313,812
Unsecured term loan, net	248,953			248,561
Unsecured senior notes, net	1,581,645			1,582,045
Accounts payable and accrued expenses	117,248			113,347
Distributions payable	32,705			33,815
Deferred income, gains and rent	25,070			35,284
Intangible liabilities, net	17,500			22,263
Lease liability - operating leases	22,707			22,554
Other liabilities	40,537			$	15,985
Total liabilities	$	2,175,278		2,387,666
Commitments and contingencies (See Note 14)
Redeemable limited partnership units at redemption value; 981,634 issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	9,950			15,388
Brandywine Operating Partnership, L.P.'s equity:
General Partnership Capital; 170,572,964 and 176,480,095 units issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	1,814,890			1,674,539
Accumulated other comprehensive income	(9,130		)	(2,715		)
Total Brandywine Operating Partnership, L.P.'s equity	1,805,760			1,671,824
Noncontrolling interest - consolidated real estate ventures	72			1,091
Total partners' equity	$	1,805,832		$	1,672,915
Total liabilities and partners' equity	$	3,991,060		$	4,075,969

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 September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Revenue
Rents	$	121,277		$	139,228		$	392,661		$	415,113
Third party management fees, labor reimbursement and leasing	4,324			4,938			13,339			14,041
Other	505			1,165			2,031			4,224
Total revenue	126,106			145,331			408,031			433,378
Operating expenses
Property operating expenses	31,567			38,358			102,320			116,542
Real estate taxes	14,923			15,247			48,525			47,119
Third party management expenses	2,509			2,469			7,546			7,035
Depreciation and amortization	43,533			55,627			145,314			158,738
General and administrative expenses	7,069			6,974			23,973			25,217
Total operating expenses	99,601			118,675			327,678			354,651
Gain on sale of real estate
Net gain on disposition of real estate	271,901			356			274,487			356
Net gain on sale of undepreciated real estate	—			250			201			1,501
Total gain on sale of real estate	271,901			606			274,688			1,857
Operating income	298,406			27,262			355,041			80,584
Other income (expense):
Interest income	467			558			1,487			1,636
Interest expense	(16,310		)	(20,400		)	(56,510		)	(61,273		)
Interest expense - amortization of deferred financing costs	(715		)	(694		)	(2,195		)	(2,026		)
Equity in loss of Real Estate Ventures	(5,788		)	(1,965		)	(9,882		)	(4,814		)
Net gain on real estate venture transactions	75			2,059			75			3,594
Net income before income taxes	276,135			6,820			288,016			17,701
Income tax (provision) benefit	(2		)	—			224			(46		)
Net income	276,133			6,820			288,240			17,655
Net (income) loss attributable to noncontrolling interests - consolidated real estate ventures	2			(11		)	(20		)	(58		)
Net income attributable to Brandywine Operating Partnership	276,135			6,809			288,220			17,597
Nonforfeitable dividends allocated to unvested restricted unitholders	(93		)	(93		)	(317		)	(305		)
Net income attributable to Common Partnership Unitholders of Brandywine Operating Partnership, L.P.	$	276,042		$	6,716		$	287,903		$	17,292
Basic income per Common Partnership Unit	$	1.61		$	0.04		$	1.66		$	0.10
Diluted income per Common Partnership Unit	$	1.60		$	0.04		$	1.66		$	0.10
Basic weighted average common partnership units outstanding	171,554,662			177,176,870			173,362,044			177,048,621
Diluted weighted average common partnership units outstanding	172,008,126			177,732,226			173,717,070			177,599,840

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 September 30,					Nine Months Ended September 30,
	2020		2019			2020			2019
Net income	$	276,133	$	6,820		$	288,240		$	17,655
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments	1,040		(1,586		)	(6,979		)	(9,209		)
Amortization of interest rate contracts (1)	188		188			564			582
Total comprehensive income (loss)	1,228		(1,398		)	(6,415		)	(8,627		)
Comprehensive income	277,361		5,422			281,825			9,028
Comprehensive (income) loss attributable to noncontrolling interest - consolidated real estate ventures	2		(11		)	(20		)	(58		)
Comprehensive income attributable to Brandywine Operating Partnership	$	277,363	$	5,411		$	281,805		$	8,970

(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, beginning of period	176,480,095		$	1,674,539		$	(2,715	)	$	1,091		$	1,672,915
Net income			8,075						12			8,087
Other comprehensive loss						(7,869		)				(7,869		)
Deferred compensation obligation	(12,376	)	(193		)							(193		)
Repurchase and retirement of LP units	(5,644,200	)	(53,858		)							(53,858		)
Share-based compensation activity	142,468		2,031									2,031
Adjustment of redeemable partnership units to liquidation value at period end			5,220									5,220
Distributions declared to general partnership unitholders ($0.19 per unit)			(32,500		)							(32,500		)
BALANCE, March 31, 2020	170,965,987		$	1,603,314		$	(10,584	)	$	1,103		$	1,593,833
Net income			4,010						10			4,020
Other comprehensive income						226						226
Deferred compensation obligation	44,827		(11		)							(11		)
Repurchase and retirement of LP units	(604,283	)	(6,141		)							(6,141		)
Share-based compensation activity	166,628		1,668									1,668
Adjustment of redeemable partnership units to liquidation value at period end			(743		)							(743		)
Distributions declared to general partnership unitholders ($0.19 per unit)			(32,540		)							(32,540		)
BALANCE, June 30, 2020	170,573,159		$	1,569,557		$	(10,358	)	$	1,113		$	1,560,312
Net income			276,135						(2		)	276,133
Other comprehensive income						1,228						1,228
Deferred compensation obligation	(195	)	(2		)							(2		)
Distributions from consolidated real estate ventures									(22		)	(22		)
Share-based compensation activity			1,263									1,263
Impact of deconsolidation of real estate venture									(1,017		)	(1,017		)
Adjustment of redeemable partnership units to liquidation value at period end			400									400
Distributions declared to general partnership unitholders ($0.19 per unit)			(32,463		)							(32,463		)
BALANCE, September 30, 2020	170,572,964		$	1,814,890		$	(9,130	)	$	72		$	1,805,832

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, beginning of period	176,873,324		$	1,791,591		$	4,725		$	2,192	$	1,798,508
Cumulative effect of accounting change			(5,336		)						(5,336		)
Net income			4,549						34		4,583
Other comprehensive loss						(2,483		)			(2,483		)
Deferred compensation obligation	(458	)									—
Repurchase and retirement of LP units	(1,337,169	)	(17,281		)						(17,281		)
Issuance of partnership interest in consolidated real estate ventures									22		22
Share-based compensation activity	465,883		3,677								3,677
Adjustment of redeemable partnership units to liquidation value at period end			(3,088		)						(3,088		)
Distributions declared to general partnership unitholders ($0.19 per unit)			(33,560		)						(33,560		)
BALANCE, March 31, 2019	176,001,580		$	1,740,552		$	2,242		$	2,248	$	1,745,042
Net income			6,239						13		6,252
Other comprehensive loss						(4,746		)			(4,746		)
Deferred compensation obligation	100,908										—
Repurchase and retirement of LP units	1,245										—
Issuance of partnership interest in consolidated real estate ventures									3		3
Share-based compensation activity	94,150		1,451								1,451
Adjustment of redeemable partnership units to liquidation value at period end			1,014								1,014
Distributions declared to general partnership unitholders ($0.19 per unit)			(33,571		)						(33,571		)
BALANCE, June 30, 2019	176,197,883		$	1,715,685		$	(2,504	)	$	2,264	$	1,715,445
Net income			6,809						11		6,820
Other comprehensive loss						(1,398		)			(1,398		)
Deferred compensation obligation	(2,965	)									—
Issuance of partnership interest in consolidated real estate ventures									2		2
Share-based compensation activity			1,105								1,105
Adjustment of redeemable partnership units to liquidation value at period end			(695		)						(695		)
Distributions declared to general partnership unitholders ($0.19 per unit)			(33,570		)						(33,570		)
BALANCE, September 30, 2019	176,194,918		$	1,689,334		$	(3,902	)	$	2,277	$	1,687,709

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) 

	Nine Months Ended September 30,
	2020			2019
Cash flows from operating activities:
Net income	$	288,240		$	17,655
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	145,314			158,738
Amortization of deferred financing costs	2,195			2,026
Amortization of debt discount/(premium), net	(55		)	527
Amortization of stock compensation costs	5,544			6,145
Straight-line rent income	(8,903		)	(8,287		)
Amortization of acquired above (below) market leases, net	(3,657		)	(7,236		)
Ground rent expense	1,092			1,103
Provision for doubtful accounts	1,041			611
Net gain on real estate venture transactions	—			(3,594		)
Net gain on sale of interests in real estate	(274,688		)	(1,857		)
Loss from Real Estate Ventures, net of distributions	9,880			5,134
Income tax provision (benefit)	(224		)	46
Changes in assets and liabilities:
Accounts receivable	(6,263		)	2,086
Other assets	(7,527		)	(13,089		)
Accounts payable and accrued expenses	10,782			194
Deferred income, gains and rent	(8,856		)	(3,640		)
Other liabilities	8,549			(1,312		)
Net cash provided by operating activities	162,464			155,250
Cash flows from investing activities:
Acquisition of properties	(11,432		)	—
Proceeds from the sale of properties	122,055			41,546
Proceeds from real estate venture sales	—			675
Proceeds from repayment of mortgage notes receivable	—			3,341
Capital expenditures for tenant improvements	(55,262		)	(53,383		)
Capital expenditures for redevelopments	(18,664		)	(33,905		)
Capital expenditures for developments	(51,435		)	(55,002		)
Advances for the purchase of tenant assets, net of repayments	1,265			(178		)
Investment in unconsolidated Real Estate Ventures	(719		)	(253		)
Deposits for real estate	—			(1,990		)
Capital distributions from Real Estate Ventures	6,916			35,206
Leasing costs paid	(16,747		)	(13,184		)
Net cash used in investing activities	(24,023		)	(77,127		)
Cash flows from financing activities:
Repayments of mortgage notes payable	(6,105		)	(5,669		)
Proceeds from credit facility borrowings	170,500			333,000
Repayments of credit facility borrowings	(170,500		)	(279,000		)
Proceeds from the exercise of stock options	47			800
Shares used for employee taxes upon vesting of share awards	(1,346		)	(1,554		)
Partner contributions to consolidated real estate venture	—			25
Repurchase and retirement of common shares	(60,000		)	(17,282		)
Distributions paid to preferred and common partnership units	(99,212		)	(101,133		)
Net cash used in financing activities	(166,616		)	(70,813		)
Increase/(Decrease) in cash and cash equivalents and restricted cash	(28,175		)	7,310
Cash and cash equivalents and restricted cash at beginning of year	91,170			23,211
Cash and cash equivalents and restricted cash at end of period	$	62,995		$	30,521
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	$	90,499		$	22,842
Restricted cash, beginning of period	671			369
Cash and cash equivalents and restricted cash, beginning of period	$	91,170		$	23,211
Cash and cash equivalents, end of period	$	62,256		$	29,925
Restricted cash, end of period	739			596
Cash and cash equivalents and restricted cash, end of period	$	62,995		$	30,521
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2020 and 2019 of $3,462 and $2,246, respectively	$	51,733		$	56,455
Cash paid for income taxes	719			1,169
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,705			33,759
Change in investment in real estate ventures as a result of dispositions	—			3,461
Change in operating real estate from deconsolidation of operating properties	269,268			—
Change in investment in real estate ventures from deconsolidation of operating properties	(263,358		)	—
Change in mortgage notes payable from deconsolidation of operating properties	(220,271		)	—
Change in capital expenditures financed through accounts payable at period end	(8,244		)	(6,011		)
Change in capital expenditures financed through retention payable at period end	754			(3,356		)

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 September 30, 2020, owned a 99.4% interest in the Operating Partnership. The Parent Company’s common shares of beneficial interest are publicly traded on the New York Stock Exchange under the ticker symbol “BDN”. The Parent Company, the Operating Partnership, and their consolidated subsidiaries are collectively referred to as the "Company".

As of September 30, 2020, the Company owned 92 properties that contained an aggregate of approximately 14.7 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 September 30, 2020:

	Number of Properties	Rentable Square Feet
Office properties	84	13,641,289
Mixed-use properties	5	780,184
Core Properties	89	14,421,473
Development property	1	205,803
Redevelopment properties	2	64,070
The Properties	92	14,691,346

In addition to the Properties, as of September 30, 2020, the Company owned 228.5 acres of land held for development, of which 35.2 acres were held for sale. The Company also held leasehold interests in two land parcels totaling 1.8 acres, each acquired through prepaid 99-year ground leases, and held options to purchase approximately 55.5 additional acres of undeveloped land.  As of September 30, 2020, 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 14.2 million square feet, of which 0.2 million square feet relates to 35.2 acres held for sale. As of September 30, 2020, the Company also owned economic interests in eight unconsolidated real estate ventures (collectively, the “Real Estate Ventures”) (see Note 4, ''Investment in Unconsolidated Real Estate Ventures” for further information). The Properties and the properties owned by the Real Estate Ventures are located in or near Philadelphia, Pennsylvania; Austin, Texas; Metropolitan Washington, D.C.; Southern New Jersey; and Wilmington, Delaware.

The Company conducts its third-party real estate management services business primarily through wholly-owned management company subsidiaries. As of September 30, 2020, the management company subsidiaries were managing properties containing an aggregate of approximately 24.4 million net rentable square feet, of which approximately 14.7 million net rentable square feet related to Properties owned by the Company and approximately 9.7 million net rentable square feet related to properties owned by third parties and 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 ("U.S. GAAP") have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, all adjustments consist solely of normal recurring matters, and result in a fair statement of the financial position of the Company as of September 30, 2020, the results of its operations for the three and nine months ended September 30, 2020 and 2019 and its cash flows for the nine months ended September 30, 2020 and 2019. 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 2019 Annual Report on Form 10-K filed with the SEC on March 2, 2020.

The consolidated balance sheet at December 31, 2019 has been derived from the audited financial statements as of that date but does not include all the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

17

The Company's Annual Report on Form 10-K for the year ended December 31, 2019 contains a discussion of our significant accounting policies under Note 2, "Summary of Significant Accounting Policies". There have been no significant changes in our significant accounting policies since December 31, 2019.

Risks and Uncertainties - COVID-19

Currently, one of the most significant risks and uncertainties is the potential adverse effect of the ongoing global COVID-19 pandemic, which has significantly slowed global economic activity, caused significant volatility in financial markets, and resulted in unprecedented job losses, causing many to fear an imminent global recession. The responses of many countries, including the U.S., have included mandatory quarantines, restrictions on business activities, including construction activities, restrictions on group gatherings, restrictions on travel and mandatory closures. These actions are creating disruption in the global economy and supply chains and adversely impacting many industries, including owners and developers of real estate. Moreover, there is significant uncertainty around the breadth and duration of business disruptions related to COVID-19, as well as its impact on the U.S. economy and consumer confidence. Demand for space at our properties is dependent on a variety of macroeconomic factors, such as employment levels, interest rates, changes in stock market valuations, rent levels and availability of competing space. The extent to which COVID-19 impacts our results will depend on future developments, many of which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity of COVID-19 and future action plans. The COVID-19 pandemic has caused continued negative economic impacts, market volatility, and business disruption, which could negatively impact our tenants’ ability to pay rent, our ability to lease vacant space, and our ability to complete development and redevelopment projects. These consequences, in turn, could materially impact our results of operations.

Accounting Standards Updates

In May 2020, the SEC adopted amendments to requirements for companies relating to significant acquisitions and dispositions of businesses as well as amendments to the significance tests in the ‘significant subsidiary’ definition. Additionally, significant modifications were made to the requirements related to the presentation of pro forma financial information. The amendments are effective on January 1, 2021, with early adoption permitted. The Company has elected to early adopt the amendments as of September 30, 2020.

On April 10, 2020, the Financial Accounting Standards Board (the "FASB") issued a Staff Q&A to respond to some frequently asked questions about accounting for lease concessions related to the effects of the COVID-19 pandemic. Consequently, for concessions related to the effects of the COVID-19 pandemic, an entity will not have to analyze each contract to determine whether enforceable rights and obligations for concessions exist in the contract and can elect to apply or not apply the lease modification guidance to those contracts. Entities may make the elections for any lessor-provided concessions related to the effects of the COVID-19 pandemic (e.g., deferrals of lease payments, cash payments made to the lessee, reduced future lease payments) as long as the concession does not result in a substantial increase in the rights of the lessor or the obligations of the lessee. The Company has elected to account for lease concessions as though the enforceable rights and obligations for the concessions existed in the original lease. To date, the impact of lease concessions granted has not had a material effect on the financial statements. The Company will continue to evaluate the impact of lease concessions and the appropriate accounting for those concessions.

In March 2020, the FASB issued ASU 2020-04 Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The amendments provide practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance is optional and is effective between March 12, 2020 and December 31, 2022. The guidance may be elected over time as reference rate reform activities occur. The Company continues to evaluate the impact of the guidance and may apply elections as applicable as additional changes in the market occur.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments Credit Losses (Topic 326), which changes how entities measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The guidance replaces the current incurred loss model with an expected loss approach, resulting in more timely recognition of such losses. In November 2018, the FASB released ASU 2018-19, Codification Improvements to Topic 326, Financial Instrument - Credit Losses, which clarifies that receivables arising from operating leases are not within the scope of Subtopic 326-20. The guidance was effective for the Company as of January 1, 2020. The Company adopted ASU 2016-13 effective January 1, 2020 and it did not have a material impact on the consolidated financial statements.

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3. REAL ESTATE INVESTMENTS

As of September 30, 2020 and December 31, 2019, the gross carrying value of the operating properties was as follows (in thousands):

	September 30, 2020		December 31, 2019
Land	$	437,617	$	489,702
Building and improvements	2,851,185		3,049,395
Tenant improvements	426,963		467,362
Total	$	3,715,765	$	4,006,459

Acquisitions

The following table summarizes the property acquisitions during the nine months ended September 30, 2020 (dollars in thousands):

Property/Portfolio Name	Acquisition Date	Location	Property Type	Rentable Square Feet/Acres	Purchase Price
145 King of Prussia Road	February 27, 2020	Radnor, PA	Land	7.75 acres	$	11,250

Dispositions

The following table summarizes the property dispositions during the nine months ended September 30, 2020 (dollars in thousands):

Property/Portfolio Name	Disposition Date	Location	Property Type	Rentable Square Feet/Acres	Sales Price		Gain/(Loss) on Sale (a)
52 East Swedesford Road	March 19, 2020	Malvern, PA	Office	131,077	$	18,000	$	2,336
Keith Valley	June 15, 2020	Horsham, PA	Land	14.0 Acres	$	4,000	$	201
One and Two Commerce Square (b)	July 21, 2020	Philadelphia, PA	Office	1,896,142	$	115,000	$	271,905

(a) Gain/(Loss) on Sale is net of closing and other transaction related costs.

(b) The Company sold a preferred equity interest representing a 30% equity interest in two office buildings located in Philadelphia, Pennsylvania, to an unrelated third party for $115.0 million (the "Commerce Square Venture Transaction"), which resulted in deconsolidation of the properties and formation of Brandywine Commerce I LP and Brandywine Commerce II LP (collectively, the "Commerce Square Venture"). The transaction valued the properties at $600.0 million. The Company recorded its investment at fair value and recognized a gain of $271.9 million in "Net gain on disposition of real estate" on the Consolidated Statements of Operations during the three months ended September 30, 2020. See Note 4, ''Investment in Unconsolidated Real Estate Ventures," for further information.

Held for Sale

As of September 30, 2020 and December 31, 2019, the Company determined that the sale of two parcels of land within the Other segment totaling 35.2 acres was probable and classified these properties as held for sale. As such, $7.3 million was classified as “Assets held for sale, net” on the consolidated balance sheets.

4. INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

As of September 30, 2020, the Company held ownership interests in eight unconsolidated real estate ventures for a net aggregate investment balance of $367.8 million, which includes a negative investment balance in one unconsolidated real estate venture of $9.7 million, reflected within "Other liabilities" on the consolidated balance sheets. As of September 30, 2020, four of the real estate ventures owned properties that contained an aggregate of approximately 7.3 million net rentable square feet of office space; two real estate ventures owned 1.4 acres of land held for development; one real estate venture owned 1.3 acres of land in active development; and one real estate venture owned a residential tower that contained 321 apartment units.

The Company accounts for its interests in the Real Estate Ventures, which range from 15% to 70%, using the equity method. Certain of the Real Estate Ventures are subject to specified priority allocations of distributable cash.

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The Company earned management fees from its Real Estate Ventures of $1.3 million and $3.2 million for the three and nine months ended September 30, 2020, respectively, and $1.0 million and $3.2 million for the three and nine months ended September 30, 2019, respectively.

The Company earned leasing commission income from its Real Estate Ventures of $0.2 million and $0.9 million for the three and nine months ended September 30, 2020, respectively, and $0.3 million and $0.8 million for the three and nine months ended September 30, 2019, respectively.

The Company had outstanding accounts receivable balances from its Real Estate Ventures of $1.4 million and $0.8 million as of September 30, 2020 and December 31, 2019, 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 Real Estate Ventures.

The following is a summary of the financial position of the Real Estate Ventures in which the Company held interests as of September 30, 2020 and December 31, 2019 (in thousands):

	September 30, 2020		December 31, 2019
Net property	$	1,363,889	$	834,367
Other assets	442,834		342,002
Other liabilities	323,442		290,071
Debt, net	833,716		585,068
Equity (a)	649,565		301,230

(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 Real Estate Ventures in which the Company held interests during the three and nine-month periods ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Revenue	$	43,109		$	32,726		$	105,554		$	101,148
Operating expenses	(23,870		)	(17,869		)	(59,838		)	(53,956		)
Interest expense, net	(6,175		)	(6,180		)	(16,320		)	(16,421		)
Depreciation and amortization	(22,345		)	(13,094		)	(47,493		)	(40,279		)
Gain on early extinguishment of debt	—			4,371			—			4,371
Net loss	$	(9,281	)	$	(46	)	$	(18,097	)	$	(5,137	)
Ownership interest %	Various			Various			Various			Various
Company's share of net income (loss)	$	(5,812	)	$	(1,945	)	$	(9,892	)	$	(4,765	)
Basis adjustments and other	24			(20		)	10			(49		)
Equity in loss of Real Estate Ventures	$	(5,788	)	$	(1,965	)	$	(9,882	)	$	(4,814	)

Commerce Square Venture

On July 21, 2020, the Company sold a 30% preferred equity interest in the entities that own One Commerce Square and Two Commerce Square. After the transaction, the Company owns approximately 32% of the equity interest in Commerce Square Venture through preferred equity interest holdings and approximately 38% of the equity interest in Commerce Square Venture as the sole common equity holder, for a combined approximately 70% equity interest in the venture. The properties held by the newly

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formed joint ventures remain encumbered by the existing mortgages, which had a $222.1 million principal balance outstanding on the transaction date.

Based on the facts and circumstances at the formation of the Commerce Square Venture, the Company determined that the venture is not a variable interest entity. As a result, the Company used the voting interest model under the accounting standard for consolidation in order to determine whether to consolidate the Commerce Square Venture. Based upon each member's substantive participating rights over the activities of the Commerce Square Venture under the operating and related agreements of the Commerce Square Venture, the Company does not have a controlling interest in the properties as the third party investor holds substantive participating rights in the properties. Therefore, the Company deconsolidated the properties and the venture is accounted for under the equity method of accounting. As a result, the Company measured its equity interest at fair value based on the fair value of the Commerce Square Venture properties and the distribution provisions of the real estate venture agreement. Since the Company retains a non-controlling interest in the Commerce Square Venture and there are no other facts and circumstances that preclude sale recognition, the contribution qualifies as the sale of a nonfinancial asset under the relevant guidance.

Under the conventional approach of accounting for equity method investments, an investor applies its percentage ownership interest to the venture’s net income or loss to determine the investor’s share of the earnings or losses of the venture. This approach is inappropriate if the venture’s capital structure gives different rights and priorities to its investors. Therefore, the Company follows the hypothetical liquidation at book value (“HLBV”) method in determining its share of the venture’s earnings or losses for the reporting period as this method better reflects the Company’s claim on the venture’s book value at the end of each reporting period. Earnings for this equity method investment are recognized in accordance with the investment agreement and, where applicable, based upon the allocation of the investment’s net assets at book value as if the investment was hypothetically liquidated at the end of each reporting period.

5. LEASES

Lessor Accounting

The table below sets forth the allocation of lease revenue between fixed contractual payments and variable lease payments for the three and nine months ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Lease Revenue	2020		2019		2020		2019
Fixed contractual payments	$	95,751	$	105,073	$	302,146	$	314,999
Variable lease payments	22,716		27,475		80,824		83,989
Total	$	118,467	$	132,548	$	382,970	$	398,988

6. INTANGIBLE ASSETS AND LIABILITIES

As of September 30, 2020 and December 31, 2019, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	September 30, 2020
	Total Cost		Accumulated Amortization			Intangible Assets, net
Intangible assets, net:
In-place lease value	$	89,504	$	(39,302	)	$	50,202
Tenant relationship value	2,610		(2,399		)	211
Above market leases acquired	1,140		(838		)	302
Total intangible assets, net	$	93,254	$	(42,539	)	$	50,715
	Total Cost		Accumulated Amortization			Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	29,189	$	(11,689	)	$	17,500

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	December 31, 2019
	Total Cost		Accumulated Amortization			Intangible Assets, net
Intangible assets, net:
In-place lease value	$	167,357	$	(84,123	)	$	83,234
Tenant relationship value	5,268		(4,815		)	453
Above market leases acquired	4,956		(3,792		)	1,164
Total intangible assets, net	$	177,581	$	(92,730	)	$	84,851
	Total Cost		Accumulated Amortization			Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	44,757	$	(22,494	)	$	22,263

As of September 30, 2020, the Company’s annual amortization for its intangible assets/liabilities, assuming no prospective early lease terminations, was as follows (dollars in thousands):

	Assets		Liabilities
2020 (three months remaining)	$	4,273	$	1,011
2021	14,789		3,601
2022	9,627		2,065
2023	7,564		1,651
2024	5,214		1,425
Thereafter	9,248		7,747
Total	$	50,715	$	17,500

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7. DEBT OBLIGATIONS

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of September 30, 2020 and December 31, 2019 (in thousands):

	September 30, 2020			December 31, 2019			Effective Interest Rate	Maturity Date
MORTGAGE DEBT:
Two Logan Square (a)	$	79,781		$	81,103		3.98%	October 2020
Four Tower Bridge	9,107			9,291			4.50%	February 2021
One Commerce Square (b)	—			116,571			3.64%	April 2023
Two Commerce Square (b)	—			108,472			4.51%	April 2023
Principal balance outstanding	88,888			315,437
Plus: fair market value premium (discount), net	25			(1,383		)
Less: deferred financing costs	—			(242		)
Mortgage indebtedness	$	88,913		$	313,812
UNSECURED DEBT
Seven-Year Term Loan - Swapped to fixed	$	250,000		$	250,000		2.87%	October 2022
$350.0M 3.95% Guaranteed Notes due 2023	350,000			350,000			3.87%	February 2023
$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 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%	March 2035
Indenture IB (Preferred Trust I) - Swapped to fixed	25,774			25,774			3.30%	April 2035
Indenture II (Preferred Trust II)	25,774			25,774			LIBOR + 1.25%	July 2035
Principal balance outstanding	1,828,610			1,828,610
Plus: original issue premium (discount), net	10,626			12,090
Less: deferred financing costs	(8,638		)	(10,094		)
Total unsecured indebtedness	$	1,830,598		$	1,830,606
Total Debt Obligations	$	1,919,511		$	2,144,418

(a) On October 21, 2020, the Company acquired the mortgage on this property from the lender. See Note 15, "Subsequent Events," for further information.

(b) The properties encumbered by these mortgages were deconsolidated as a result of the Commerce Square Venture Transaction.. See Note 3, ''Real Estate Investments," for further information.

In addition to the debt described above, the Company utilizes borrowings under its unsecured revolving 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 LIBOR plus 1.10%. The interest rate and facility fee are subject to adjustment upon a change in the Company’s unsecured debt ratings. During the nine months ended September 30, 2020, the weighted-average interest rate on Unsecured Credit Facility borrowings was 1.6% resulting in a nominal amount of interest expense. As of September 30, 2020, the Company had no borrowings under the Unsecured Credit Facility.

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

The Company was in compliance with all financial covenants as of September 30, 2020. Certain of the covenants restrict the Company’s ability to obtain alternative sources of capital.

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As of September 30, 2020, the Company’s aggregate scheduled principal payments of debt obligations are as follows (in thousands):

2020 (three months remaining)	$	79,845
2021	9,043
2022	250,000
2023	350,000
2024	350,000
Thereafter	878,610
Total principal payments	1,917,498
Net unamortized premiums/(discounts)	10,651
Net deferred financing costs	(8,638		)
Outstanding indebtedness	$	1,919,511

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 September 30, 2020 and December 31, 2019, respectively. The discount rate used in calculating fair value is the sum of the current risk free rate and the risk premium on the date of measurement of the instruments or obligations. Considerable judgment is necessary to interpret market data and to develop the related estimates of fair value. Accordingly, the estimates presented are not necessarily indicative of the amounts that the Company could realize upon disposition. The use of different estimates and valuation methodologies may have a material effect on the fair value amounts shown. The Company believes that the carrying amounts reflected in the consolidated balance sheets at September 30, 2020 and December 31, 2019 approximate the fair values for cash and cash equivalents, accounts receivable, other assets and liabilities, accounts payable and accrued expenses because they are short-term in duration. The following are financial instruments for which the Company’s estimates of fair value differ from the carrying amounts (in thousands):

	September 30, 2020				December 31, 2019
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,503,035	$	1,566,650	$	1,503,435	$	1,591,830
Variable rate debt	$	327,563	$	308,519	$	327,171	$	309,947
Mortgage notes payable	$	88,913	$	89,034	$	313,812	$	317,031
Notes receivable	$	44,430	$	47,415	$	44,430	$	43,322

(a) Net of deferred financing costs of $7.6 million and $8.7 million for unsecured notes payable, $1.0 million and $1.4 million for variable rate debt and $0.0 million and $0.2 million for mortgage notes payable as of September 30, 2020 and December 31, 2019.

On June 26, 2018, the Company provided a $44.4 million mortgage loan to Brandywine 1919 Ventures, an unconsolidated real estate venture in which the Company holds a 50% ownership interest, and recorded a related party note receivable of $44.4 million within 'Other assets' on the consolidated balance sheets. Refer to Note 4, ''Investment in Unconsolidated Real Estate Ventures" to the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 for further detail regarding this financing.

The Company used quoted market prices as of September 30, 2020 and December 31, 2019 to value the unsecured notes payable and, as such, categorized them as Level 2.

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The inputs utilized to determine the fair value of the Company’s mortgage notes payable and 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 fair value of the mortgage notes payable was determined using a discounted cash flow model that considered the contractual interest and principal payments discounted at a blended market rate for loans with similar terms, maturities and loan-to-value. These inputs have been categorized as Level 3 because the Company considers the rates used in the valuation techniques to be unobservable.

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

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

Disclosure about the fair value of financial instruments is based upon pertinent information available to management as of September 30, 2020 and December 31, 2019. Although management is not aware of any factors that would significantly affect the fair value amounts, such amounts were not comprehensively revalued for purposes of these financial statements since September 30, 2020. Current estimates of fair value may differ from the amounts presented herein.

9. DERIVATIVE FINANCIAL INSTRUMENTS

The following table summarizes the terms and fair values of the Company’s derivative financial instruments as of September 30, 2020 and December 31, 2019. The notional amounts provide an indication of the extent of the Company’s involvement in these instruments at that time, but do not represent exposure to credit, interest rate or market risks (amounts presented in thousands).

Hedge Product	Hedge Type	Designation		Notional Amount				Strike		Trade Date	Maturity Date	Fair value
				9/30/2020		12/31/2019						9/30/2020			12/31/2019
Liabilities
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	2.868	%	October 8, 2015	October 8, 2022	$	(7,597	)	$	(562	)
Swap	Interest Rate	Cash Flow	(a)	25,774		25,774		3.300	%	December 22, 2011	January 30, 2021	(234		)	(94		)
				$	275,774	$	275,774

(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.

Disclosure about the fair value of derivative instruments is based upon pertinent information available to management as of September 30, 2020 and December 31, 2019. Although management is not aware of any factors that would significantly affect the fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since September 30, 2020. Current estimates of fair value may differ from the amounts presented herein.

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 interests in the accompanying consolidated balance sheet of the Parent Company was $10.5 million and $9.3 million as of September 30, 2020 and December 31, 2019, respectively. Under the applicable accounting guidance, the redemption value of limited partnership units are carried at fair value. The Parent Company believes that the aggregate settlement value of these interests (based on the

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number of units outstanding and the closing price of the common shares on the balance sheet date) was approximately $10.2 million and $15.5 million as of September 30, 2020 and December 31, 2019, respectively.

11. BENEFICIARIES' EQUITY OF THE PARENT COMPANY

Earnings per Share (EPS)

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

	Three Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	276,133		$	276,133		$	6,820		$	6,820
Net income attributable to noncontrolling interests	(1,612		)	(1,612		)	(48		)	(48		)
Nonforfeitable dividends allocated to unvested restricted shareholders	(93		)	(93		)	(93		)	(93		)
Net income attributable to common shareholders	$	274,428		$	274,428		$	6,679		$	6,679
Denominator
Weighted-average shares outstanding	170,573,028			170,573,028			176,195,244			176,195,244
Contingent securities/Share based compensation	—			453,464			—			555,356
Weighted-average shares outstanding	170,573,028			171,026,492			176,195,244			176,750,600
Earnings per Common Share:
Net income attributable to common shareholders	$	1.61		$	1.60		$	0.04		$	0.04

	Nine Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	288,240		$	288,240		$	17,655		$	17,655
Net income attributable to noncontrolling interests	(1,701		)	(1,701		)	(155		)	(155		)
Nonforfeitable dividends allocated to unvested restricted shareholders	(317		)	(317		)	(305		)	(305		)
Net income attributable to common shareholders	$	286,222		$	286,222		$	17,195		$	17,195
Denominator
Weighted-average shares outstanding	172,380,410			172,380,410			176,066,507			176,066,507
Contingent securities/Share based compensation	—			355,026			—			551,219
Weighted-average shares outstanding	172,380,410			172,735,436			176,066,507			176,617,726
Earnings per Common Share:
Net income attributable to common shareholders	$	1.66		$	1.66		$	0.10		$	0.10

Redeemable common limited partnership units totaling 981,634 at September 30, 2020 and 981,626 at September 30, 2019, 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 nine months ended September 30, 2020 and 2019, 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 incentive plan.

Common Shares

On September 15, 2020 the Parent Company declared a distribution of $0.19 per common share, totaling $32.7 million, which was paid on October 21, 2020 to shareholders of record as of October 7, 2020.

The Parent Company maintains a common share repurchase program under which the Board of Trustees has authorized the Parent Company to repurchase common shares. On January 3, 2019, the Board of Trustees authorized the repurchase of up to $150.0 million common shares from and after January 3, 2019. During the nine months ended September 30, 2020, the Company repurchased and retired 6,248,483 common shares at an average price of $9.60 per share, totaling $60.0 million. During the nine

26

months ended September 30, 2019, the Company repurchased and retired 1,337,169 common shares at an average price of $12.92 per share, totaling $17.3 million.

12. PARTNERS' EQUITY OF THE PARENT COMPANY

Earnings per Common Partnership Unit

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

	Three Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	276,133		$	276,133		$	6,820		$	6,820
Net (income) loss attributable to noncontrolling interests	2			2			(11		)	(11		)
Nonforfeitable dividends allocated to unvested restricted unitholders	(93		)	(93		)	(93		)	(93		)
Net income attributable to common unitholders	$	276,042		$	276,042		$	6,716		$	6,716
Denominator
Weighted-average units outstanding	171,554,662			171,554,662			177,176,870			177,176,870
Contingent securities/Share based compensation	—			453,464			—			555,356
Total weighted-average units outstanding	171,554,662			172,008,126			177,176,870			177,732,226
Earnings per Common Partnership Unit:
Net income attributable to common unitholders	1.61			1.60			0.04			0.04

	Nine Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	288,240		$	288,240		$	17,655		$	17,655
Net income attributable to noncontrolling interests	(20		)	(20		)	(58		)	(58		)
Nonforfeitable dividends allocated to unvested restricted unitholders	(317		)	(317		)	(305		)	(305		)
Net income attributable to common unitholders	$	287,903		$	287,903		$	17,292		$	17,292
Denominator
Weighted-average units outstanding	173,362,044			173,362,044			177,048,621			177,048,621
Contingent securities/Share based compensation	—			355,026			—			551,219
Total weighted-average units outstanding	173,362,044			173,717,070			177,048,621			177,599,840
Earnings per Common Partnership Unit:
Net income attributable to common unitholders	$	1.66		$	1.66		$	0.10		$	0.10

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 share. For the three and nine months ended September 30, 2020 and 2019, earnings representing nonforfeitable dividends were allocated to the unvested restricted units issued to the Parent Company's executives and other employees under the Parent Company's shareholder-approved long-term incentive plan.

Common Partnership Units

On September 15, 2020 the Operating Partnership declared a distribution of $0.19 per common partnership unit, totaling $32.7 million, which was paid on October 21, 2020 to unitholders of record as of October 7, 2020.

In connection with the Parent Company’s common share repurchase program, one common unit of the Operating Partnership is retired for each common share repurchased. During the nine months ended September 30, 2020, the Company retired 6,248,483 common partnership units at an average price of $9.60 per unit, totaling $60.0 million, in connection with an equal number of common share repurchases. During the nine months ended September 30, 2019, the Company retired 1,337,169 common partnership units at an average price of $12.92 per unit, totaling $17.3 million, in connection with an equal number of share repurchases.

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13. SEGMENT INFORMATION

As of September 30, 2020, the Company owns and manages properties within five segments: (1) Philadelphia Central Business District ("Philadelphia CBD"), (2) Pennsylvania Suburbs, (3) Austin, Texas (4) Metropolitan Washington, D.C. and (5) 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 Metropolitan Washington, D.C. segment includes properties in the District of Columbia, Northern Virginia and Southern Maryland. The Other segment includes properties located in Camden County, New Jersey and New Castle County, Delaware. In addition to the five 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 following tables provide selected asset information and results of operations of the Company's reportable segments (in thousands):

Real estate investments, at cost:
	September 30, 2020		December 31, 2019
Philadelphia CBD (a)	$	1,414,041	$	1,726,299
Pennsylvania Suburbs	1,000,214		1,003,890
Austin, Texas	726,295		721,255
Metropolitan Washington, D.C.	488,139		468,035
Other	87,076		86,980
Operating Properties	$	3,715,765	$	4,006,459
Right of use asset - operating leases, net	$	21,145	$	21,656
Corporate
Construction-in-progress	$	186,853	$	180,718
Land held for development (b)	$	115,474	$	96,124
Prepaid leasehold interests in land held for development, net (c)	$	39,287	$	39,592

(a) Decrease primarily due to the Commerce Square Venture Transaction. See Note 3, ''Real Estate Investments," for further information.

(b) Does not include 35.2 acres of land classified as held for sale as of September 30, 2020 and December 31, 2019.

(c) Includes leasehold interests in prepaid 99-year ground leases at 3025 and 3001-3003 JFK Boulevard, in Philadelphia, Pennsylvania as of September 30, 2020 and December 31, 2019.

Net operating income:

	Three Months Ended September 30,
	2020								2019
	Total revenue		Operating expenses (a)			Net operating income (loss)			Total revenue		Operating expenses (a)			Net operating income (loss)
Philadelphia CBD	$	52,640	$	(18,522	)	$	34,118		$	66,105	$	(24,773	)	$	41,332
Pennsylvania Suburbs	34,649		(11,141		)	23,508			34,818		(11,667		)	23,151
Austin, Texas	25,328		(9,944		)	15,384			26,280		(9,302		)	16,978
Metropolitan Washington, D.C.	9,675		(5,236		)	4,439			13,179		(5,999		)	7,180
Other	3,188		(2,374		)	814			3,706		(2,691		)	1,015
Corporate	626		(1,782		)	(1,156		)	1,243		(1,642		)	(399		)
Operating properties	$	126,106	$	(48,999	)	$	77,107		$	145,331	$	(56,074	)	$	89,257

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	Nine Months Ended September 30,
	2020								2019
	Total revenue		Operating expenses (a)			Net operating income (loss)			Total revenue		Operating expenses (a)			Net operating income (loss)
Philadelphia CBD	$	181,203	$	(65,615	)	$	115,588		$	196,859	$	(75,311	)	121,548
Pennsylvania Suburbs	106,569		(34,980		)	71,589			104,744		(36,466		)	68,278
Austin, Texas	76,921		(30,032		)	46,889			77,234		(28,182		)	49,052
Metropolitan Washington, D.C.	30,520		(15,678		)	14,842			40,372		(18,542		)	21,830
Other	10,221		(7,434		)	2,787			10,352		(7,226		)	3,126
Corporate	2,597		(4,652		)	(2,055		)	3,817		(4,969		)	(1,152		)
Operating properties	$	408,031	$	(158,391	)	$	249,640		$	433,378	$	(170,696	)	$	262,682

(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 September 30,						Nine Months Ended September 30,
	September 30, 2020			December 31, 2019			2020			2019			2020			2019
Philadelphia CBD (a)	$	277,161		$	17,524		$	(2,737	)	$	55		$	(2,575	)	$	217
Metropolitan Washington, D.C.	100,325			102,840			(1,367		)	(528		)	(2,463		)	(963		)
MAP Venture (b)	(9,715		)	(70		)	(1,684		)	(1,602		)	(4,844		)	(4,414		)
Other	—			—			—			110			—			346
Total	$	367,771		$	120,294		$	(5,788	)	$	(1,965	)	$	(9,882	)	$	(4,814	)

(a) Increase primarily due to the Commerce Square Venture Transaction. See Note 3, ''Real Estate Investments," for further information.

(b) Included in "Other liabilities" on the consolidated balance sheets.

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 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, as defined by GAAP, to consolidated NOI, (in thousands):

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	Three Months Ended September 30,					Nine Months Ended September 30,
	2020			2019		2020		2019
Net income	$	276,133		$	6,820	$	288,240	$	17,655
Plus:
Interest expense	16,310			20,400		56,510		61,273
Interest expense - amortization of deferred financing costs	715			694		2,195		2,026
Depreciation and amortization	43,533			55,627		145,314		158,738
General and administrative expenses	7,069			6,974		23,973		25,217
Equity in loss of Real Estate Ventures	5,788			1,965		9,882		4,814
Less:
Interest income	467			558		1,487		1,636
Income tax (provision) benefit	(2		)	—		224		(46		)
Net gain on disposition of real estate	271,901			356		274,487		356
Net gain on sale of undepreciated real estate	—			250		201		1,501
Net gain on real estate venture transactions	75			2,059		75		3,594
Consolidated net operating income	$	77,107		$	89,257	$	249,640	$	262,682

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.

Letters-of-Credit

Under certain mortgages, the Company has funded required leasing and capital reserve accounts for the benefit of the mortgage lenders with letters-of-credit. There were no letters-of-credit for a mortgage lender as of September 30, 2020. Certain of the tenant rents at properties that secure these mortgage loans are deposited into the loan servicer’s depository accounts, which are used to fund debt service, operating expenses, capital expenditures and the escrow and reserve accounts, as necessary. Any excess cash is included in cash and cash equivalents.

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

As of September 30, 2020, the Company’s Real Estate Ventures had aggregate indebtedness of $842.2 million. These loans are generally mortgage or construction loans, most of which are nonrecourse to the Company, except for customary recourse carve-outs. As of September 30, 2020, the $150.0 million construction loan obtained by 4040 Wilson, located in Arlington, Virginia, for which the Company has a payment guarantee up to $41.3 million, is recourse to the Company. In addition, during construction undertaken by the Real Estate Ventures, including 4040 Wilson, the Company has provided, and expects to continue to provide, cost overrun and completion guarantees, with rights of contribution among partners or members in the real estate ventures, as well as customary environmental indemnities and guarantees of customary exceptions to nonrecourse provisions in loan agreements.  

Other Commitments or Contingencies

In connection with the Schuylkill Yards Project, the Company entered into a neighborhood engagement program and, as of September 30, 2020, had $7.7 million of future fixed contractual obligations. The Company also committed to fund additional

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contributions under the program. As of September 30, 2020, the Company estimates that these additional contributions, which are not fixed under the terms of agreement, will be $2.6 million.

In connection with the formation of the Commerce Square Venture, the Company has committed to investing an additional $20.0 million of preferred equity in the properties on a pari passu basis with its joint venture partner.

As of September 30, 2020, the Company was under contract to acquire an office property containing approximately 170,000 rentable square feet located in Radnor, Pennsylvania for a purchase price of $20.3 million. The Company has paid $1.0 million towards the purchase price in the form of a non-refundable deposit and the transaction is expected to close during the fourth quarter of 2020.

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.

15. SUBSEQUENT EVENTS

On October 21, 2020, the Company acquired the $79.8 million first mortgage on the property located at Two Logan Square in Philadelphia, Pennsylvania from the current lender at an amount equal to the outstanding principal balance and accrued interest thereon. The Company acquired the first mortgage with cash-on-hand and proceeds from our unsecured line of credit.

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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, many of which may be more likely to impact us as a result of the ongoing COVID-19 outbreak, are set forth in the “Risk Factors ” section of our Annual Report on Form 10-K for the year ended December 31, 2019 and our Quarterly Report on Form 10-Q for the quarter ended March 31, 2020. 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 September 30, 2020 and December 31, 2019 and for the three and nine months ended September 30, 2020 and 2019 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 nine months ended September 30, 2020, we owned and managed properties within five markets: (1) Philadelphia Central Business District (“Philadelphia CBD”), (2) Pennsylvania Suburbs, (3) Austin, Texas, (4) Metropolitan Washington, D.C., and (5) 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 Metropolitan Washington, D.C. segment includes properties in Northern Virginia, Washington, D.C. and Southern Maryland. The Other segment includes properties in Camden County, New Jersey and New Castle County, Delaware. In addition to the five markets, 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 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 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.

We are closely monitoring the impact of the COVID-19 pandemic on all aspects of our business, including how it is impacting our tenants, employees, and business partners. Adverse changes in economic conditions, including the ongoing effects of the global COVID-19 pandemic, could result in a reduction of the availability of financing and potentially in higher borrowing costs. Vacancy rates may increase, and rental rates and rent collection rates may decline, during the remainder of 2020 and possibly beyond as the current economic climate may negatively impact tenants.

Overall economic conditions, including but not limited to higher unemployment 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. The ongoing COVID-19 pandemic has significantly slowed global economic activity, caused significant volatility in financial markets, and resulted in unprecedented job losses. In addition, the government responses to control the pandemic are creating disruption in the global economy and supply chains and adversely impacting many industries, including owners and developers of office and mixed-use building. These adverse conditions have impacted 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 debt capital, if necessary, in various forms and from different sources, including

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through secured or unsecured loans from banks, pension funds and life insurance companies. However, there can be no assurance that we will be able to borrow funds on terms that are economically attractive or at all.

We continue to seek revenue growth throughout our portfolio by increasing occupancy and rental rates. Occupancy at our Core Properties at September 30, 2020 was 91.0% compared to 93.2% at September 30, 2019.

The table below summarizes selected operating and leasing statistics of our wholly owned properties for the three and nine months ended September 30, 2020 and 2019:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Leasing Activity
Core Properties (1):
Total net rentable square feet owned	14,421,473			16,168,629			14,421,473			16,168,629
Occupancy percentage (end of period)	91.0		%	93.2		%	91.0		%	93.2		%
Average occupancy percentage	90.7		%	92.9		%	90.0		%	92.2		%
Total Portfolio, less properties in development (2):
Tenant retention rate (3)	59.6		%	71.6		%	53.4		%	72.2		%
New leases and expansions commenced (square feet)	370,123			276,907			636,800			902,040
Leases renewed (square feet)	280,678			240,904			562,632			748,953
Net absorption (square feet)	101,562			33,173			(150,576		)	116,164
Percentage change in rental rates per square feet (4):
New and expansion rental rates	22.8		%	13.3		%	22.5		%	13.9		%
Renewal rental rates	10.6		%	6.5		%	12.8		%	11.8		%
Combined rental rates	17.1		%	9.3		%	17.2		%	12.4		%
Capital Costs Committed (5):
Leasing commissions (per square feet)	$	12.07		$	9.49		$	9.41		$	8.05
Tenant Improvements (per square feet)	$	27.24		$	29.78		$	21.68		$	23.77
Weighted average lease term (years)	7.2			7.9			6.3			7.4
Total capital per square foot per lease year	$	4.48		$	4.82		$	4.00		$	4.76

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

(2) Includes leasing related to completed developments and redevelopments, as well as 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 1.1% of our aggregate final annualized base rents as of September 30, 2020 (representing approximately 1.5% of the net rentable square feet of the properties) are scheduled to expire without penalty in the remainder of 2020. 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 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 accounts receivable reserve policy in light of our tenant base and general

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and local economic conditions. Our accounts receivable allowance was $6.1 million or 3.3% of total receivables (including accrued rent receivable) as of September 30, 2020 compared to $8.0 million or 4.0% of total receivables (including accrued rent receivable) as of December 31, 2019. The decrease in the accounts receivable allowance as a percentage of the total receivables is primarily due to the write-off of the accrued rent receivable for certain retail tenants where revenue is now being recognized on a cash basis due to collectability concerns arising from the economic conditions resulting from the COVID-19 outbreak.

If economic conditions deteriorate, including as a result of the recent COVID-19 outbreak, we may experience increases in past due accounts, defaults, lower occupancy and reduced effective rents. This condition 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. During the second quarter of 2020, certain development projects were impacted by building moratoriums imposed by local governments as a result of COVID-19. These moratoriums have since been lifted in all geographies in which we have active development projects, but could be reinstated in the event of a significant increase in COVID-19 cases. The construction delays did not materially impact the development projects.

As of September 30, 2020 the following development and redevelopment projects remain under construction in progress and we were proceeding on the following activity (dollars, in thousands):

Property/Portfolio Name	Location	Expected Completion	Activity Type	Approximate Square Footage	Estimated Costs		Amount Funded
405 Colorado Street (a)	Austin, TX	Q1 2021	Development	205,803	$	116,000	$	58,000
3000 Market Street (b)	Philadelphia, PA	Q1 2021	Redevelopment	64,070	$	38,000	$	16,300

(a) Estimated costs include $2.1 million of existing property basis through a ground lease. Project includes 520 parking spaces.

(b) Estimated costs include $12.8 million of existing property basis.

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

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 accounting principles generally accepted in the United States of America (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, 2019 contains a discussion of our critical accounting policies. There have been no significant changes in our critical accounting policies since December 31, 2019.

RESULTS OF OPERATIONS

The following discussion is based on our consolidated financial statements for the three and nine months ended September 30, 2020 and 2019. 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

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operating performance of our real estate assets by segment, as presented in Note 13, ''Segment Information," to our consolidated financial statements, and of our business as a whole. We believe NOI provides useful information to investors regarding our financial condition and results of operations because it reflects only those income and expense items that are incurred at the property level. While NOI is a relevant and widely used measure of operating performance of real estate investment trusts, it does not represent cash flow from operations or net income as defined by GAAP and should not be considered as an alternative to those measures in evaluating our liquidity or operating performance. NOI does not reflect interest expenses, real estate impairment losses, depreciation and amortization costs, capital expenditures and leasing costs. We believe that net income, as defined by GAAP, is the most appropriate earnings measure. See Note 13, ''Segment Information” to our Consolidated Financial Statements for a reconciliation of NOI to our consolidated net income as defined by GAAP.

Comparison of the Three Months Ended September 30, 2020 and September 30, 2019

The following comparison for the three months ended September 30, 2020 to the three months ended September 30, 2019, makes reference to the effect of the following:

(a) “Same Store Property Portfolio,” which represents 87 properties containing an aggregate of approximately 14.1 million net rentable square feet, and represents properties that we owned for the three-month periods ended September 30, 2020 and 2019. The Same Store Property Portfolio includes properties acquired or placed in service on or prior to July 1, 2019 and owned through September 30, 2020 excluding properties classified as held for sale,

(b) “Total Portfolio,” which represents all properties owned by us during the three months ended September 30, 2020 and 2019,

(c) "Recently Completed/Acquired Properties," which represents two properties placed into service or acquired on or subsequent to July 1, 2019,

(d) "Development/Redevelopment Properties," which represents three 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) "Q3 2019 through Q3 2020 Dispositions," which represents four properties disposed of from July 1, 2019 through September 30, 2020.

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Comparison of three months ended September 30, 2020 to the three months ended September 30, 2019

	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)	2020			2019			$ Change			% Change		2020			2019			2020			2019			2020			2019			2020			2019			$ Change			% Change
Revenue:
Rents	$	113.2		$	115.4		$	(2.2	)	(1.9	)%	$	3.2		$	2.0		$	—		$	1.2		$	4.9		$	20.6		$	121.3		$	139.2		$	(17.9	)	(12.9	)%
Third party management fees, labor reimbursement and leasing	—			—			—			—	%	—			—			—			—			4.3			4.9			4.3			4.9			(0.6		)	(12.2	)%
Other	0.2			0.4			(0.2		)	(50.0	)%	—			—			—			—			0.3			0.8			0.5			1.2			(0.7		)	(58.3	)%
Total revenue	113.4			115.8			(2.4		)	(2.1	)%	3.2			2.0			—			1.2			9.5			26.3			126.1			145.3			(19.2		)	(13.2	)%
Property operating expenses	28.7			30.0			(1.3		)	(4.3	)%	0.8			0.6			(0.1		)	—			2.2			7.8			31.6			38.4			(6.8		)	(17.7	)%
Real estate taxes	13.8			12.5			1.3			10.4	%	0.2			0.2			0.1			0.1			0.8			2.4			14.9			15.2			(0.3		)	(2.0	)%
Third party management expenses	—			—			—			—	%	—			—			—			—			2.5			2.5			2.5			2.5			—			—	%
Net operating income	70.9			73.3			(2.4		)	(3.3	)%	2.2			1.2			—			1.1			4.0			13.6			77.1			89.2			(12.1		)	(13.6	)%
Depreciation and amortization	40.1			43.7			(3.6		)	(8.2	)%	1.4			1.6			—			1.9			2.1			8.5			43.6			55.7			(12.1		)	(21.7	)%
General & administrative expenses	—			—			—			—	%	—			—			—			—			7.1			7.0			7.1			7.0			0.1			1.4	%
Net gain on disposition of real estate																														(271.9		)	(0.4		)	(271.5		)	67875.0	%
Net gain on sale of undepreciated real estate																														—			(0.3		)	0.3			(100.0	)%
Operating income (loss)	$	30.8		$	29.6		$	1.2		4.1	%	$	0.8		$	(0.4	)	$	—		$	(0.8	)	$	(5.2	)	$	(1.9	)	$	298.3		$	27.2		$	271.1		996.7	%
Number of properties	87			87								2						3												92
Square feet	14.1			14.1								0.3						0.3												14.7
Core Occupancy % (b)	91.0		%	93.2		%						91.6		%
Other Income (Expense):
Interest income																														0.5			0.6			(0.1		)	(16.7	)%
Interest expense																														(16.3		)	(20.4		)	4.1			(20.1	)%
Interest expense — Deferred financing costs																														(0.7		)	(0.7		)	—			—	%
Equity in loss of Real Estate Ventures																														(5.8		)	(2.0		)	(3.8		)	190.0	%
Net gain on real estate venture transactions																														0.1			2.1			(2.0		)	(95.2	)%
Net income																														$	276.1		$	6.8		$	269.3		3960.3	%
Net income attributable to Common Shareholders of Brandywine Realty Trust																														$	1.60		$	0.04		$	1.56		3900.0	%

(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 decreased by $17.9 million during the third quarter of 2020 compared to the third quarter of 2019. The primary drivers of the decrease in Rents are as follows:

• $14.0 million decrease related to the Q3 2019 through Q3 2020 Dispositions;

• $1.6 million decrease related to reduced parking income;

• $1.5 million decrease due to the termination of a large tenant in the Metropolitan Washington D.C. segment; and

• $1.3 million decrease in revenue from the residential and hotel components at the FMC Tower in our Philadelphia CBD segment related to the COVID-19 pandemic.

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Third party management fees, labor reimbursement, and leasing income decreased by $0.6 million during the third quarter of 2020 compared to the third quarter of 2019 primarily due to a decrease in construction management fees for a third party building that was completed in the first quarter of 2020.

Other income decreased $0.7 million, which was primarily related to a decrease in income from the restaurant component of FMC Tower as a result of the COVID-19 pandemic.

Property Operating Expenses

Property operating expenses across our Total Portfolio decreased $6.8 million for the three months ended September 30, 2020 compared to the three months ended September 30, 2019. The decrease in property operating expenses is primarily related to a decrease of $4.2 million related to the Q3 2019 through Q3 2020 Dispositions, a $1.3 million decrease across our Same Store portfolio primarily due to decreased use of our properties by the tenants during the COVID-19 pandemic, and a $0.9 million decrease at the hotel, residential, and restaurant components of FMC Tower due to the COVID-19 pandemic.

Depreciation and Amortization

Depreciation and amortization expense decreased by $12.1 million for the third quarter of 2020 compared to the third quarter of 2019. The decrease in depreciation and amortization expense is primarily related to a $6.3 million decrease related to the Q3 2019 through Q3 2020 Dispositions and a $3.6 million decrease at the Same Store Property Portfolio, largely due to the completion of amortization of acquired in-place lease intangibles. There was also a decrease of $1.9 million related to our Development/Redevelopment Properties primarily related to a property placed into redevelopment in our Philadelphia CBD segment.

Net Gain on Disposition of Real Estate

The Net Gain on Disposition of Real Estate of $271.9 million recognized during the three months ended September 30, 2020 is related to the sale of a 30% preferred equity interest in One Commerce Square and Two Commerce Square, which resulted in deconsolidation of the properties and recognition of our investment in the properties at fair value.

Interest Expense

Interest expense decreased by $4.1 million for the third quarter of 2020 compared to the third quarter of 2019. The decrease is primarily driven by a $1.8 million decrease due to deconsolidation of One Commerce Square and Two Commerce Square and the associated mortgage loans on July 21, 2020 and a $2.0 million reduction to prior period accretions of interest expense on account of a contingent payment to an unaffiliated third party, a portion of which contingent payment ceased to be probable in the third quarter due to the anticipated purchase of the Two Logan Square mortgage. These decreases were partially offset by an increase in interest expense of $1.6 million related to the 10 Year Notes Due 2024 and the 15 Year Notes Due 2029, as $100.0 million was added to the principal of each note during the fourth quarter of 2019.

The remaining decrease of $1.9 million is primarily related to decreased borrowings on the line of credit and lower interest rates during the three months ended September 30, 2020 compared to the three months ended September 30, 2019.

Equity in loss of Real Estate Ventures

Equity in loss of Real Estate Ventures increased $3.8 million from the third quarter of 2019 to the third quarter of 2020 primarily due to the following:

• $2.6 million in net losses associated with our Commerce Square Venture formed on July 21, 2020; and

• $1.1 million increase related to depreciation and interest expense being recorded at our 4040 Wilson Venture due to portions of the project being placed into service as leases commenced.

Net Gain on Real Estate Venture Transactions

The gain of $2.1 million recognized during the three months ended September 30, 2019 is primarily related to the gain on debt forgiveness for 3130 Fairview Drive, located in Falls Church, Virginia, held by the BDN - AI Venture. The property was transferred to the mortgage lender during the three months ended September 30, 2019 in full satisfaction of the $26.0 million mortgage debt then held by the lender.

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Net Income

Net income increased by $269.3 million for the third quarter of 2020 compared to the third quarter of 2019 as a result of the factors described above.

Net Income per Common Share – fully diluted

Net income per share was $1.60 for the third quarter of 2020 as compared to net income per share of $0.04 for the third quarter of 2019 as a result of the factors described above.

Comparison of the Nine Months Ended September 30, 2020 and September 30, 2019

The following comparison for the nine months ended September 30, 2020 to the nine months ended September 30, 2019, makes reference to the effect of the following:

(a) “Same Store Property Portfolio,” which represents 86 properties containing an aggregate of approximately 13.9 million net rentable square feet, and represents properties that we owned for the nine-month periods ended September 30, 2020 and 2019. The Same Store Property Portfolio includes properties acquired or placed in service on or prior to January 1, 2019 and owned through September 30, 2020 excluding properties classified as held for sale,

(b) “Total Portfolio,” which represents all properties owned by us during the nine months ended September 30, 2020 and 2019,

(c) "Recently Completed/Acquired Properties," which represents three properties placed into service or acquired on or subsequent to January 1, 2019,

(d) "Development/Redevelopment Properties," which represents three 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 2019 and 2020 Dispositions," which represents four properties disposed of from January 1, 2019 through September 30, 2020.

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Comparison of the nine months ended September 30, 2020 to the nine months ended September 30, 2019

	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)	2020			2019			$ Change			% Change		2020			2019		2020			2019			2020			2019			2020			2019			$ Change			% Change
Revenue:
Rents	$	339.7		$	341.2		$	(1.5	)	(0.4	)%	$	11.2		$	10.5	$	0.2		$	1.6		$	41.6		$	61.8		$	392.7		$	415.1		$	(22.4	)	(5.4	)%
Third party management fees, labor reimbursement and leasing	—			—			—			—	%	—			—		—			—			13.3			14.0			13.3			14.0			(0.7		)	(5.0	)%
Other	0.7			1.1			(0.4		)	(36.4	)%	—			—		—			—			1.3			3.1			2.0			4.2			(2.2		)	(52.4	)%
Total revenue	340.4			342.3			(1.9		)	(0.6	)%	11.2			10.5		0.2			1.6			56.2			78.9			408.0			433.3			(25.3		)	(5.8	)%
Property operating expenses	87.0			91.0			(4.0		)	(4.4	)%	2.9			2.6		(0.4		)	0.4			12.8			22.5			102.3			116.5			(14.2		)	(12.2	)%
Real estate taxes	40.3			38.2			2.1			5.5	%	1.6			1.2		0.7			0.4			5.9			7.3			48.5			47.1			1.4			3.0	%
Third party management expenses	—			—			—			—	%	—			—		—			—			7.5			7.0			7.5			7.0			0.5			7.1	%
Net operating income	213.1			213.1			—			—	%	6.7			6.7		(0.1		)	0.8			30.0			42.1			249.7			262.7			(13.0		)	(4.9	)%
Depreciation and amortization	121.7			126.1			(4.4		)	(3.5	)%	4.6			4.4		1.6			2.7			17.5			25.6			145.4			158.8			(13.4		)	(8.4	)%
General & administrative expenses	—			—			—			—	%	—			—		—			—			24.0			25.2			24.0			25.2			(1.2		)	(4.8	)%
Net gain on disposition of real estate																													(274.5		)	(0.4		)	(274.1		)	68525.0	%
Net gain on sale of undepreciated real estate																													(0.2		)	(1.5		)	1.3			(86.7	)%
Operating income (loss)	$	91.4		$	87.0		$	4.4		5.1	%	$	2.1		$	2.3	$	(1.7	)	$	(1.9	)	$	(11.5	)	$	(8.7	)	$	355.0		$	80.6		$	274.4		340.4	%
Number of properties	86			86								3					3												92
Square feet	13.9			13.9								0.5					0.3												14.7
Core Occupancy % (b)	90.9		%	93.1		%						94.4		%
Other Income (Expense):
Interest income																													1.5			1.6			(0.1		)	(6.3	)%
Interest expense																													(56.5		)	(61.3		)	4.8			(7.8	)%
Interest expense — Deferred financing costs																													(2.2		)	(2.0		)	(0.2		)	10.0	%
Equity in loss of Real Estate Ventures																													(9.9		)	(4.8		)	(5.1		)	106.3	%
Net gain on real estate venture transactions																													0.1			3.6			(3.5		)	(97.2	)%
Income tax benefit																													0.2			—			0.2			—	%
Net income																													$	288.2		$	17.7		$	270.5		1528.2	%
Net income attributable to Common Shareholders of Brandywine Realty Trust																													$	1.66		$	0.10		$	1.56		1560.0	%

(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 decreased by $22.4 million during the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019. The decrease in rents is primarily driven by the following:

• $16.8 million decrease related to the YTD 2019 and 2020 Dispositions;

• $4.3 million decrease related to the termination of a large tenant in the Metropolitan Washington D.C. segment; and

• $3.6 million decrease related to reduced parking income.

The remaining change was attributable to a $2.3 million increase in Rents, which was primarily driven by increases in occupancy at properties in the Philadelphia suburbs and Philadelphia CBD segments for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019.

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Other income decreased $2.2 million, which was primarily related to a decrease in income from the restaurant component of FMC Tower, as well as decreases in various fees from third parties due to the COVID-19 pandemic and associated store and building closures.

Property Operating Expenses

Property operating expenses across our Total Portfolio decreased $14.2 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019. The decrease in property operating expenses is primarily related to a decrease of $5.3 million related to the YTD 2019 and 2020 Dispositions as well as a decrease of $4.0 million across our Same Store Portfolio primarily due to the termination of a large tenant in the Metropolitan Washington D.C. and a $2.2 million decrease at the hotel, residential, and restaurant components of FMC Tower due to the COVID-19 pandemic. There was also a decrease of $1.6 million across our portfolio due to decreased use of our properties by the tenants during the COVID-19 pandemic.

Real Estate Taxes

Real estate taxes increased $1.4 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019. The increase in real estate taxes is primarily related to increases in real estate tax assessments, the most significant of which are related to our Austin segment, as well as a $0.4 million increase related to Recently Completed/Acquired Properties. These increases were partially offset by a decrease of $1.9 million related to the YTD 2019 and 2020 Dispositions.

Depreciation and Amortization

Depreciation and amortization expense decreased by $13.4 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019. The decrease in depreciation and amortization expense primarily relates to a $6.6 million decrease due to the YTD 2019 and 2020 Dispositions and a $4.4 million decrease related to the Same Store properties, largely due to the completion of amortization of acquired in-place lease intangibles and the write-off of lease intangibles in connection with an early lease termination at 1676 International Drive in 2019. There was also a decrease of $1.1 million related to our Development/Redevelopment Properties primarily related to a property placed into redevelopment in our Philadelphia CBD segment.

General and Administrative

General and administrative expenses decreased by $1.2 million for the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019, primarily due to a $1.5 million decrease in compensation related expenses, which is driven by changes to the vesting period of retirement eligible officers for the 2020 Restricted Performance Share Unit awards compared to the 2019 Restricted Performance Share Unit awards.

Net Gain on disposition of Real Estate

The gain of $274.5 million recognized during the nine months ended September 30, 2020 is primarily related to the following:

• $271.9 million related to the sale of a 30% preferred equity interest in One Commerce Square and Two Commerce Square, which resulted in deconsolidation of the properties and recognition of our investment in the properties at fair value; and

• $2.3 million related to the disposition of 52 East Swedesford Road, an office property in our Pennsylvania Suburbs Segment.

Net Gain on Sale of Undepreciated Real Estate

The gain of $1.5 million recognized during the nine months ended September 30, 2019 resulted from the sale of 9 Presidential Boulevard and from additional consideration received during the nine months ended September 30, 2019 related to the Libertyview disposition, which occurred in 2015.

The gain of $0.2 million recognized during the nine months ended September 30, 2020 resulted from the sale of Keith Valley, a land parcel in our Pennsylvania Suburbs Segment.

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Interest Expense

Interest expense decreased $4.8 million from the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019. The decrease is primarily driven by a $1.9 million decrease due to deconsolidation of One Commerce Square and Two Commerce Square and the associated mortgage loans on July 21, 2020 and a $2.0 million reduction to prior period accretions of interest expense on account of a contingent payment to an unaffiliated third party, a portion of which contingent payment ceased to be probable in the third quarter due to the anticipated purchase of the Two Logan Square mortgage. These decreases were partially offset by an increase in interest expense of $4.8 million related to the 10 Year Notes Due 2024 and the 15 Year Notes Due 2029, as $100.0 million was added to the principal of each note during the fourth quarter of 2019.

The remaining decrease of $5.7 million is primarily related to decreased borrowings on the line of credit and lower interest rates during the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019.

Equity in Loss of Real Estate Ventures

Equity in loss of Real Estate Ventures increased $5.1 million from the nine months ended September 30, 2019 to the nine months ended September 30, 2020 primarily due to the following:

• $2.6 million in net losses associated with our Commerce Square Venture formed on July 21, 2020;

• $1.5 million increase related to depreciation and interest expense being recorded at our 4040 Wilson Venture due to portions of the project being placed into service as leases commenced;

• $0.4 million increase related to our MAP Venture due to lower revenues from lower occupancy rate during the nine months ended September 30, 2020 than the nine months ended September 30, 2019; and

• $0.3 million increase related to the disposition of our PJP Joint Venture in the fourth quarter of 2019.

Net Gain from Real Estate Venture Transactions

The $3.6 million net gain from real estate venture transactions during the nine months ended September 30, 2019 relates to the following:

• $1.2 million of gain recognized related to proceeds from a connection agreement by the 51 N Street venture with the third-party owner of an adjacent property;

• $0.3 million of additional proceeds during the first quarter of 2019 from the sale of the evo at Cira Centre South Venture, which was sold during the first quarter of 2018; and

• $2.1 million related to the gain on debt forgiveness for 3130 Fairview Drive, located in Falls Church, Virginia, held by the BDN - AI Venture.

Net Income

Net income increased by $270.5 million from the nine months ended September 30, 2020 compared to the nine months ended September 30, 2019 as a result of the factors described above.

Net Income per Common Share – fully diluted

Net income per share was $1.66 for the nine months ended September 30, 2020 as compared to net income per share of $0.10 for the nine months ended September 30, 2019 as a result of the factors described above.

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;

41

• distributions to shareholders to maintain our Parent Company’s 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;

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

• sales of real estate.

As of September 30, 2020, the Parent Company owned a 99.4% interest in the Operating Partnership. The remaining interest of approximately 0.6% 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 2020 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 revolving 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 revolving credit facility, including unsecured term loans and unsecured notes. As of September 30, 2020 we were in compliance with all of our debt covenants and requirement obligations.

In addition, we are continuing to monitor the outbreak of COVID-19 and the related economic impacts, market volatility, and business disruption, and its impact on our tenants. The severity and duration of the pandemic and its impact on our operations and liquidity is uncertain as this continues to evolve globally. However, if the outbreak continues, there will likely be continued negative economic impacts, market volatility, and business disruption which could negatively impact our tenants’ ability to pay rent, our ability to lease vacant space, and our ability to complete development and redevelopment projects, and these consequences, in turn, could materially impact our results of operations. We collected 99.5% of total cash-based rent due from tenants during the third quarter of 2020. In addition, approximately 97% of October total cash-based rent has been received from our tenants to date, which reflects a 97% collection rate from our office tenants.

We have granted rent relief requests primarily to our co-working and retail tenants. The relief requests have substantially all been in the form of rent deferral for varying lengths of time, but are primarily being repaid in 2020 and 2021. For those tenants we believe require rent relief, we have granted deferrals and, in some instances, rent abatements while receiving extended lease terms through favorable lease extensions. To date, we have provided $4.5 million of rent relief to 59 tenants approximating 0.9 million square feet. The deferrals represent approximately 0.9% of annualized revenue. We continue to assess the merits of rent deferral requests and can give no assurances on the outcomes of these ongoing negotiations, the amount and nature of the rent relief packages and ultimate recovery of the amounts deferred.

See Note 2, "Basis of Presentation - Accounting Standards Update," to our Consolidated Financial Statements for further information related to our accounting policies for rent concessions. Pursuant to our accounting elections, rental revenue continued to be recognized for tenants subject to deferral agreements, as long as such agreements did not result in a substantial increase in our

42

rights as the lessor. As a result, rent deferrals did not have a material impact on revenues for the three months ended September 30, 2020.

We use multiple financing sources to fund our long-term capital needs. When needed, we use borrowings under our unsecured revolving credit facility for general business purposes, including to meet debt maturities and to fund distributions to shareholders as well as 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 revolving credit facility could fail to fund a 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 secured and unsecured obligations, which, as of September 30, 2020, amounted to $88.9 million and $1,828.6 million, respectively.

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 during the three and nine months ended September 30, 2020. We expect to fund any additional share repurchases with a combination of available cash balances and availability under our unsecured revolving 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 nine months ended September 30, 2020, we sold 14.0 acres of land as well as one office property for net cash proceeds of $3.5 and $17.5 million, respectively. In addition, we sold a 30% preferred equity interest in One Commerce Square and Two Commerce Square for net cash proceeds of $100.8 million.

As of September 30, 2020, we had $62.3 million of cash and cash equivalents and $598.4 million of available borrowings under our Credit Facility, net of $1.6 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 2020 will be to fund our current development and redevelopment projects and acquire an office property in Radnor, Pennsylvania for $20.3 million. Additionally, we acquired the $79.8 million mortgage note at par from the lender for Two Logan Square, in Philadelphia, Pennsylvania, on October 21, 2020. See Note 15, ''Subsequent Events" for further information.

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 September 30, 2020 and December 31, 2019, we maintained cash and cash equivalents and restricted cash of $63.0 million and $91.2 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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	Nine Months Ended September 30,
Activity	2020			2019			(Decrease) Increase
Operating	$	162,464		$	155,250		$	7,214
Investing	(24,023		)	(77,127		)	53,104
Financing	(166,616		)	(70,813		)	(95,803		)
Net cash flows	$	(28,175	)	$	7,310		$	(35,485	)

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. 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 nine months ended September 30, 2020, when compared to the nine months ended September 30, 2019, the change in investing cash flows was due to the following activities (in thousands):

Acquisitions of real estate	$	(11,432	)
Capital expenditures and capitalized interest	16,929
Capital improvements/acquisition deposits/leasing costs	(130		)
Joint venture investments	(1,141		)
Distributions from joint ventures	(28,290		)
Proceeds from the sale of properties	80,509
Proceeds from notes receivable	(3,341		)
Decrease in net cash used in investing activities	$	53,104

We generally fund our investment activity through the sale of real estate, property-level financing, credit facilities, senior unsecured notes, and construction loans. From time to time, we may issue common or preferred shares of beneficial interest, or the Operating Partnership may issue common or preferred units of limited partnership interest. During the nine months ended September 30, 2020, when compared to the nine months ended September 30, 2019, the change in financing cash flows was due to the following activities (in thousands):

Proceeds from debt obligations	$	(162,500	)
Repayments of debt obligations	108,064
Proceeds from the exercise of stock options	(753		)
Repurchase and retirement of common shares	(42,718		)
Other financing activities	183
Dividends and distributions paid	1,921
Increase in net cash used in financing activities	$	(95,803	)

Off-Balance Sheet Arrangements

As of September 30, 2020, we did not have any off-balance sheet arrangements that have, or are reasonably likely to have, a material current or future effect on our financial condition, revenues or expenses, results of operations, liquidity, capital expenditures or capital resources.

44

Capitalization

Indebtedness

The table below summarizes indebtedness under our mortgage notes payable and our unsecured debt at September 30, 2020 and December 31, 2019:  

	September 30, 2020			December 31, 2019
	(dollars in thousands)
Balance: (a)
Fixed rate	$	1,864,662		$	2,091,211
Variable rate - unhedged	52,836			52,836
Total	$	1,917,498		$	2,144,047
Percent of Total Debt:
Fixed rate	97.2		%	97.5		%
Variable rate - unhedged	2.8		%	2.5		%
Total	100.0		%	100.0		%
Weighted-average interest rate at period end:
Fixed rate	3.8		%	3.9		%
Variable rate - unhedged	1.5		%	3.2		%
Total	3.8		%	3.8		%
Weighted-average maturity in years:
Fixed rate	5.2			5.6
Variable rate - unhedged	14.9			15.6
Total	5.4			5.9

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

Scheduled principal payments and related weighted average annual effective interest rates for our debt as of September 30, 2020 were as follows (dollars in thousands):

Period	Scheduled amortization		Principal maturities		Total		Weighted Average Interest Rate of Maturing Debt
2020 (three months remaining)	$	63	$	79,782	$	79,845	3.98	%
2021	21		9,022		9,043		4.50	%
2022	—		250,000		250,000		2.87	%
2023	—		350,000		350,000		3.87	%
2024	—		350,000		350,000		3.78	%
2025	—		—		—		—	%
2026	—		—		—		—	%
2027	—		450,000		450,000		4.03	%
2028	—		—		—		—	%
2029	—		350,000		350,000		4.30	%
Thereafter	—		78,610		78,610		2.12	%
Totals	$	84	$	1,917,414	$	1,917,498	3.77	%

The indenture under which the Operating Partnership issued its unsecured notes contains financial covenants, including: (i) a leverage ratio not to exceed 60%; (ii) a secured debt leverage ratio not to exceed 40%; (iii) a debt service coverage ratio of greater than 1.5 to 1.0; and (iv) an unencumbered asset value of not less than 150% of unsecured debt. The Operating Partnership is in compliance with all covenants as of September 30, 2020.

The Operating Partnership has mortgage loans that are collateralized by certain of its Properties. Payments on mortgage loans are generally due in monthly installments of principal and interest, or interest only. The Operating Partnership intends to refinance or

45

repay its indebtedness as it matures, subject to tax guarantees, through the use of proceeds from selective property sales and secured or unsecured borrowings. However, in the current and expected future economic environment one or more of these sources may not be available on attractive terms or at all.

Equity

In order to maintain its qualification as a REIT, the Parent Company is required to, among other things, pay dividends to its shareholders of at least 90% of its REIT taxable income. See Note 11, ''Beneficiaries' Equity of the Parent Company,” to our Consolidated Financial Statements for further information related to our dividends declared for the third quarter of 2020.

Contractual Obligations

Refer to our 2019 Annual Report on Form 10-K for a discussion of our contractual obligations. In connection with the formation of the Commerce Square Venture, the Company has committed to investing an additional $20.0 million in preferred equity in the properties on a pari-passu basis with our joint venture partner.

Otherwise, there have been no material changes, outside the ordinary course of business, to these contractual obligations during the three months ended September 30, 2020.

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. 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 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.

46

The following table presents a reconciliation of net income attributable to common unit holders to FFO for the three and nine months ended September 30, 2020 and 2019:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
	(amounts in thousands, except share information)
Net income attributable to common unitholders	$	276,042		$	6,716		$	287,903		$	17,292
Add (deduct):
Amount allocated to unvested restricted unitholders	93			93			317			305
Net gain on real estate venture transactions	(75		)	(2,059		)	(75		)	(2,318		)
Net gain on disposition of real estate	(271,901		)	(356		)	(274,487		)	(356		)
Depreciation and amortization:
Real property	34,479			40,695			110,026			112,833
Leasing costs including acquired intangibles	8,542			14,374			33,786			44,478
Company’s share of unconsolidated real estate ventures	13,014			4,800			22,243			14,815
Partners’ share of consolidated real estate ventures	(5		)	(61		)	(124		)	(168		)
Funds from operations	$	60,189		$	64,202		$	179,589		$	186,881
Funds from operations allocable to unvested restricted shareholders	(172		)	(179		)	(529		)	(567		)
Funds from operations available to common share and unit holders (FFO)	$	60,017		$	64,023		$	179,060		$	186,314
Weighted-average shares/units outstanding — basic (a)	171,554,662			177,176,870			173,362,044			177,048,621
Weighted-average shares/units outstanding — fully diluted (a)	172,008,126			177,732,226			173,717,070			177,599,840

(a) Includes common share and partnership units outstanding through the three and nine months ended September 30, 2020 and 2019, respectively.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

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

Interest Rate Risk and Sensitivity Analysis

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

Our financial instruments consist of both fixed and variable rate debt. As of September 30, 2020, our consolidated debt consisted of mortgage loans with an outstanding principal balance of $88.9 million and unsecured notes with an outstanding principal balance of $1,500.0 million, all of which are fixed rate borrowings. We also have variable rate debt consisting of trust preferred securities with an outstanding principal balance of $78.6 million, a $600.0 million Credit Facility with no amounts borrowed and an unsecured term loan with an outstanding principal balance of $250.0 million, all of which have been swapped to fixed rates, except for two trust preferred securities with an outstanding principal balance of $52.8 million and our unsecured credit facility. 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 fixed-rate mortgage debt would decrease by a nominal amount. If market rates of interest decrease by 100 basis points, the fair value of our outstanding fixed-rate mortgage debt would increase by a nominal amount.

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As of September 30, 2020, based on prevailing interest rates and credit spreads, the fair value of our unsecured notes was $1,566.7 million. For sensitivity purposes, a 100-basis point change in the discount rate equates to a change in the total fair value of our unsecured notes of approximately $15.7 million at September 30, 2020.

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 $328.6 million as of September 30, 2020 and December 31, 2019. The total fair value of our debt was approximately $308.5 million and $309.9 million at September 30, 2020 and December 31, 2019, respectively. For sensitivity purposes, if market rates of interest increase by 100 basis points the fair value of our variable rate debt would decrease by approximately $12.1 million at September 30, 2020. If market rates of interest decrease by 100 basis points the fair value of our outstanding variable rate debt would increase by approximately $13.3 million.

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.

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Part II. OTHER INFORMATION

Item 1. Legal Proceedings

None.

Item 1A. Risk Factors

As of September 30, 2020 there have been no material changes to the Risk Factors disclosed in "Part I. Item 1A. Risk Factors" in the Company's Annual Report on Form 10-K for the year ended December 31, 2019 or the Risk Factors disclosed in "Part II. Item 1A. Risk Factors" in the Company's Quarterly Report on Form 10-Q for the three months ended March 31, 2020.

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, or other repurchases of equity securities of the Parent Company or the Operating Partnership, during the fiscal quarter ended September 30, 2020. As of September 30, 2020, $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

None.

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Item 6. Exhibits

(a)	Exhibits
	Exhibits No.	Description
	31.1	Certification of the Chief Executive Officer of Brandywine Realty Trust pursuant to 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934 (filed herewith)
	31.2	Certification of the Chief Financial Officer of Brandywine Realty Trust pursuant to 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934 (filed herewith)
	31.3	Certification of the Chief Executive Officer of Brandywine Realty Trust, in its capacity as the general partner of Brandywine Operating Partnership, L.P., pursuant to 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934 (filed herewith)
	31.4	Certification of the Chief Financial Officer of Brandywine Realty Trust, in its capacity as the general partner of Brandywine Operating Partnership, L.P., pursuant to 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934 (filed herewith)
	32.1	Certification of the Chief Executive Officer of Brandywine Realty Trust pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith)
	32.2	Certification of the Chief Financial Officer of Brandywine Realty Trust pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith)
	32.3	Certification of the Chief Executive Officer of Brandywine Realty Trust, in its capacity as the general partner of Brandywine Operating Partnership, L.P., pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith)
	32.4	Certification of the Chief Financial Officer of Brandywine Realty Trust, in its capacity as the general partner of Brandywine Operating Partnership, L.P., pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished herewith)
	101.1	The following materials from the Quarterly Reports on Form 10-Q of Brandywine Realty Trust and Brandywine Operating Partnership, L.P. for the quarter ended September 30, 2020 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 of 1934, as amended (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.

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 REALTY TRUST (Registrant)
Date:	October 28, 2020	By:	/s/ Gerard H. Sweeney
			Gerard H. Sweeney, President and Chief Executive Officer
			(Principal Executive Officer)
Date:	October 28, 2020	By:	/s/ Thomas E. Wirth
			Thomas E. Wirth, Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	October 28, 2020	By:	/s/ Daniel Palazzo
			Daniel Palazzo, Vice President and Chief Accounting Officer
			(Principal Accounting Officer)

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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:	October 28, 2020	By:	/s/ Gerard H. Sweeney
			Gerard H. Sweeney, President and Chief Executive Officer
			(Principal Executive Officer)
Date:	October 28, 2020	By:	/s/ Thomas E. Wirth
			Thomas E. Wirth, Executive Vice President and Chief Financial Officer
			(Principal Financial Officer)
Date:	October 28, 2020	By:	/s/ Daniel Palazzo
			Daniel Palazzo, Vice President and Chief Accounting Officer
			(Principal Accounting Officer)

52

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: October 28, 2020	/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: October 28, 2020	/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: October 28, 2020	/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: October 28, 2020	/s/ Thomas E. Wirth
	Thomas E. Wirth
	Executive Vice President and Chief Financial Officer

EX-32.1

Exhibit 32.1

RULE 13(a)-14(b) CERTIFICATION

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002*

In connection with the Quarterly Report of Brandywine Realty Trust (the “Company”) on Form 10-Q for the quarter ended September 30, 2020 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: October 28, 2020

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

EX-32.2

Exhibit 32.2

RULE 13(a)-14(b) CERTIFICATION

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002*

In connection with the Quarterly Report of Brandywine Realty Trust (the “Company”) on Form 10-Q for the quarter ended September 30, 2020 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: October 28, 2020

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

EX-32.3

Exhibit 32.3

RULE 13(a)-14(b) CERTIFICATION

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002*

In connection with the Quarterly Report of Brandywine Operating Partnership, L.P. (the “Partnership”) on Form 10-Q for the quarter ended September 30, 2020 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: October 28, 2020

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

EX-32.4

Exhibit 32.4

RULE 13(a)-14(b) CERTIFICATION

PURSUANT TO

18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002*

In connection with the Quarterly Report of Brandywine Operating Partnership, L.P. (the “Partnership”) on Form 10-Q for the quarter ended September 30, 2020 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: October 28, 2020

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

XML

Cover Page - shares	9 Months Ended
	Sep. 30, 2020	Oct. 21, 2020
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2020
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 Walnut Street
Entity Address, Address Line Two	Suite 1700
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		170,572,964
Entity Central Index Key	0000790816
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Amendment Flag	false
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Document Information [Line Items]
Entity Registrant Name	Brandywine Operating Partnership, L.P.
Entity Incorporation, State or Country Code	DE
Entity File Number	000-24407
Entity Tax Identification Number	23-2862640
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001060386

XML

Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Real estate investments:
Operating properties	$ 3,715,765	$ 4,006,459
Accumulated depreciation	(980,664)	(973,318)
Right of use asset - operating leases, net	21,145	21,656
Operating real estate investments, net	2,756,246	3,054,797
Construction-in-progress	186,853	180,718
Land held for development	115,474	96,124
Prepaid leasehold interests in land held for development, net	39,287	39,592
Total real estate investments, net	3,097,860	3,371,231
Assets held for sale, net	7,349	7,349
Cash and cash equivalents	62,256	90,499
Accounts receivable, net of allowance of $0 and $284 as of September 30, 2020 and December 31, 2019, respectively	20,433	16,363
Accrued rent receivable, net of allowance of $6,111 and $7,691 as of September 30, 2020 and December 31, 2019, respectively	159,952	174,144
Investment in Real Estate Ventures	377,486	120,294
Deferred costs, net	90,601	95,560
Intangible assets, net	50,715	84,851
Other assets	124,408	115,678
Total assets	3,991,060	4,075,969
LIABILITIES AND EQUITY
Mortgage notes payable, net	88,913	313,812
Unsecured term loan, net	248,953	248,561
Unsecured senior notes, net	1,581,645	1,582,045
Accounts payable and accrued expenses	117,248	113,347
Distributions payable	32,705	33,815
Deferred income, gains and rent	25,070	35,284
Intangible liabilities, net	17,500	22,263
Lease liability - operating leases	22,707	22,554
Other liabilities	40,537	15,985
Total liabilities	2,175,278	2,387,666
Commitments and contingencies (See Note 14)
Equity:
Common Shares of Brandywine Realty Trust's beneficial interest, $0.01 par value; shares authorized 400,000,000; 170,572,964 and 176,480,095 issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	1,707	1,766
Additional paid-in-capital	3,136,851	3,192,158
Deferred compensation payable in common shares	17,516	16,216
Common shares in grantor trust, 1,160,494 and 1,105,542 issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	(17,516)	(16,216)
Cumulative earnings	1,091,095	804,556
Accumulated other comprehensive loss	(8,749)	(2,370)
Cumulative distributions	(2,415,736)	(2,318,233)
Total Brandywine Realty Trust's equity	1,805,168	1,677,877
Noncontrolling interests	10,614	10,426
Total beneficiaries' equity	1,815,782	1,688,303
Total liabilities and beneficiaries' equity	3,991,060	4,075,969
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Real estate investments:
Operating properties	3,715,765	4,006,459
Accumulated depreciation	(980,664)	(973,318)
Right of use asset - operating leases, net	21,145	21,656
Operating real estate investments, net	2,756,246	3,054,797
Construction-in-progress	186,853	180,718
Land held for development	115,474	96,124
Prepaid leasehold interests in land held for development, net	39,287	39,592
Total real estate investments, net	3,097,860	3,371,231
Assets held for sale, net	7,349	7,349
Cash and cash equivalents	62,256	90,499
Accounts receivable, net of allowance of $0 and $284 as of September 30, 2020 and December 31, 2019, respectively	20,433	16,363
Accrued rent receivable, net of allowance of $6,111 and $7,691 as of September 30, 2020 and December 31, 2019, respectively	159,952	174,144
Investment in Real Estate Ventures	377,486	120,294
Deferred costs, net	90,601	95,560
Intangible assets, net	50,715	84,851
Other assets	124,408	115,678
Total assets	3,991,060	4,075,969
LIABILITIES AND EQUITY
Mortgage notes payable, net	88,913	313,812
Unsecured term loan, net	248,953	248,561
Unsecured senior notes, net	1,581,645	1,582,045
Accounts payable and accrued expenses	117,248	113,347
Distributions payable	32,705	33,815
Deferred income, gains and rent	25,070	35,284
Intangible liabilities, net	17,500	22,263
Lease liability - operating leases	22,707	22,554
Other liabilities	40,537	15,985
Total liabilities	2,175,278	2,387,666
Commitments and contingencies (See Note 14)
Redeemable limited partnership units at redemption value; 981,634 issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	9,950	15,388
Equity:
General Partnership Capital; 170,572,964 and 176,480,095 units issued and outstanding as of September 30, 2020 and December 31, 2019, respectively	1,814,890	1,674,539
Accumulated other comprehensive loss	(9,130)	(2,715)
Total Brandywine Operating Partnership, L.P.'s equity	1,805,760	1,671,824
Noncontrolling interest - consolidated real estate ventures	72	1,091
Total partners' equity	1,805,832	1,672,915
Total liabilities and beneficiaries' equity	$ 3,991,060	$ 4,075,969

XML

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Accounts receivable, allowance	$ 0	$ 284
Accrued rent receivable, allowance	$ 6,111	$ 7,691
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)	170,572,964	176,480,095
Common stock, shares outstanding (in shares)	170,572,964	176,480,095
Common shares in grantor trust, issued and outstanding (in shares)	1,160,494	1,105,542
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Accounts receivable, allowance	$ 0	$ 284
Accrued rent receivable, allowance	$ 6,111	$ 7,691
Redeemable limited partnership units issued (in units)	981,634	981,634
Redeemable limited partnership units outstanding (in units)	981,634	981,634
General partners' capital account, units issued (in units)	170,572,964	176,480,095
General partners' capital account, units outstanding (in units)	170,572,964	176,480,095

XML

Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenue
Revenue	$ 126,106	$ 145,331	$ 408,031	$ 433,378
Operating expenses
Property operating expenses	31,567	38,358	102,320	116,542
Real estate taxes	14,923	15,247	48,525	47,119
Third party management expenses	2,509	2,469	7,546	7,035
Depreciation and amortization	43,533	55,627	145,314	158,738
General and administrative expenses	7,069	6,974	23,973	25,217
Total operating expenses	99,601	118,675	327,678	354,651
Gain on sale of real estate
Net gain on disposition of real estate	271,901	356	274,487	356
Net gain on sale of undepreciated real estate	0	250	201	1,501
Total gain on sale of real estate	271,901	606	274,688	1,857
Operating income	298,406	27,262	355,041	80,584
Other income (expense):
Interest income	467	558	1,487	1,636
Interest expense	(16,310)	(20,400)	(56,510)	(61,273)
Interest expense - amortization of deferred financing costs	(715)	(694)	(2,195)	(2,026)
Equity in loss of Real Estate Ventures	(5,788)	(1,965)	(9,882)	(4,814)
Net gain on real estate venture transactions	75	2,059	75	3,594
Net income before income taxes	276,135	6,820	288,016	17,701
Income tax (provision) benefit	(2)	0	224	(46)
Net income	276,133	6,820	288,240	17,655
Net income attributable to noncontrolling interests	(1,612)	(48)	(1,701)	(155)
Net income attributable to Brandywine Realty Trust	274,521	6,772	286,539	17,500
Nonforfeitable dividends allocated to unvested restricted shareholders	(93)	(93)	(317)	(305)
Net income attributable to Common Shareholders of Brandywine Realty Trust	$ 274,428	$ 6,679	$ 286,222	$ 17,195
Basic income per Common Share (in dollars per share)	$ 1.61	$ 0.04	$ 1.66	$ 0.10
Diluted income per Common Share (in dollars per share)	$ 1.60	$ 0.04	$ 1.66	$ 0.10
Basic weighted average shares outstanding (in shares)	170,573,028	176,195,244	172,380,410	176,066,507
Diluted weighted average shares outstanding (in shares)	171,026,492	176,750,600	172,735,436	176,617,726
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Revenue	$ 126,106	$ 145,331	$ 408,031	$ 433,378
Operating expenses
Property operating expenses	31,567	38,358	102,320	116,542
Real estate taxes	14,923	15,247	48,525	47,119
Third party management expenses	2,509	2,469	7,546	7,035
Depreciation and amortization	43,533	55,627	145,314	158,738
General and administrative expenses	7,069	6,974	23,973	25,217
Total operating expenses	99,601	118,675	327,678	354,651
Gain on sale of real estate
Net gain on disposition of real estate	271,901	356	274,487	356
Net gain on sale of undepreciated real estate	0	250	201	1,501
Total gain on sale of real estate	271,901	606	274,688	1,857
Operating income	298,406	27,262	355,041	80,584
Other income (expense):
Interest income	467	558	1,487	1,636
Interest expense	(16,310)	(20,400)	(56,510)	(61,273)
Interest expense - amortization of deferred financing costs	(715)	(694)	(2,195)	(2,026)
Equity in loss of Real Estate Ventures	(5,788)	(1,965)	(9,882)	(4,814)
Net gain on real estate venture transactions	75	2,059	75	3,594
Net income before income taxes	276,135	6,820	288,016	17,701
Income tax (provision) benefit	(2)	0	224	(46)
Net income	276,133	6,820	288,240	17,655
Net (income) loss attributable to noncontrolling interests - consolidated real estate ventures	2	(11)	(20)	(58)
Net income attributable to Brandywine Operating Partnership	276,135	6,809	288,220	17,597
Nonforfeitable dividends allocated to unvested restricted shareholders	(93)	(93)	(317)	(305)
Net income attributable to Common Shareholders of Brandywine Realty Trust	$ 276,042	$ 6,716	$ 287,903	$ 17,292
Basic income per Common Share (in dollars per share)	$ 1.61	$ 0.04	$ 1.66	$ 0.10
Diluted income per Common Share (in dollars per share)	$ 1.60	$ 0.04	$ 1.66	$ 0.10
Basic weighted average shares outstanding (in shares)	171,554,662	177,176,870	173,362,044	177,048,621
Diluted weighted average shares outstanding (in shares)	172,008,126	177,732,226	173,717,070	177,599,840
Rents
Revenue
Revenue	$ 121,277	$ 139,228	$ 392,661	$ 415,113
Rents | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Revenue	121,277	139,228	392,661	415,113
Third party management fees, labor reimbursement and leasing
Revenue
Service and other revenue	4,324	4,938	13,339	14,041
Third party management fees, labor reimbursement and leasing | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Service and other revenue	4,324	4,938	13,339	14,041
Other
Revenue
Service and other revenue	505	1,165	2,031	4,224
Other | BRANDYWINE OPERATING PARTNERSHIP, L.P.
Revenue
Service and other revenue	$ 505	$ 1,165	$ 2,031	$ 4,224

XML

Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net income		$ 276,133	$ 6,820	$ 288,240	$ 17,655
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments		1,040	(1,586)	(6,979)	(9,209)
Amortization of interest rate contracts	[1]	188	188	564	582
Total comprehensive income (loss)		1,228	(1,398)	(6,415)	(8,627)
Comprehensive income		277,361	5,422	281,825	9,028
Comprehensive income attributable to noncontrolling interest		(1,619)	(40)	(1,665)	(107)
Comprehensive income attributable to Brandywine Realty Trust		275,742	5,382	280,160	8,921
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Net income		276,133	6,820	288,240	17,655
Comprehensive income (loss):
Unrealized gain (loss) on derivative financial instruments		1,040	(1,586)	(6,979)	(9,209)
Amortization of interest rate contracts	[1]	188	188	564	582
Total comprehensive income (loss)		1,228	(1,398)	(6,415)	(8,627)
Comprehensive income		277,361	5,422	281,825	9,028
Comprehensive income attributable to noncontrolling interest		2	(11)	(20)	(58)
Comprehensive income attributable to Brandywine Realty Trust		$ 277,363	$ 5,411	$ 281,805	$ 8,970

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

XML

Consolidated Statements of Beneficiaries' Equity - USD ($) $ in Thousands	Total	Common Stock	Rabbi Trust/Deferred Compensation Shares	Additional Paid-in Capital	Common Shares in Grantor Trust	Cumulative Earnings	Accumulated Other Comprehensive Income (Loss)	Cumulative Distributions	Noncontrolling Interests	Cumulative effect of accounting change	Cumulative effect of accounting change Cumulative Earnings
Beginning balance (in shares) at Dec. 31, 2018		176,873,324	977,120
Beginning balance at Dec. 31, 2018	$ 1,811,028	$ 1,770	$ 14,021	$ 3,200,312	$ (14,021)	$ 775,625	$ 5,029	$ (2,183,909)	$ 12,201	$ (5,336)	$ (5,336)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,583					4,523			60
Other comprehensive income (loss)	(2,483)						(2,469)		(14)
Issuance of partnership interest in consolidated real estate ventures	22								22
Repurchase and retirement of Common Shares of Beneficial Interest (in shares)		(1,337,169)
Repurchase and retirement of Common Shares of Beneficial Interest	(17,281)	$ (13)		(17,268)
Share-based compensation activity (in shares)		465,883	41,342
Share-based compensation activity	3,677	$ 4		3,673
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(458)	(5,920)
Share Issuance from/(to) Deferred Compensation Plan	0		$ 619		(619)
Reallocation of Noncontrolling interest	0			57					(57)
Distributions declared	(33,747)							(33,560)	(187)
Ending balance (in shares) at Mar. 31, 2019		176,001,580	1,012,542
Ending balance at Mar. 31, 2019	1,760,463	$ 1,761	$ 14,640	3,186,774	(14,640)	774,812	2,560	(2,217,469)	12,025
Beginning balance (in shares) at Dec. 31, 2018		176,873,324	977,120
Beginning balance at Dec. 31, 2018	1,811,028	$ 1,770	$ 14,021	3,200,312	(14,021)	775,625	5,029	(2,183,909)	12,201	$ (5,336)	$ (5,336)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	17,655
Other comprehensive income (loss)	$ (8,627)
Repurchase and retirement of Common Shares of Beneficial Interest (in shares)	(1,337,169)
Repurchase and retirement of Common Shares of Beneficial Interest	$ (17,300)
Ending balance (in shares) at Sep. 30, 2019		176,194,918	1,105,542
Ending balance at Sep. 30, 2019	1,702,437	$ 1,763	$ 16,216	3,189,350	(16,216)	787,789	(3,550)	(2,284,610)	11,695
Beginning balance (in shares) at Mar. 31, 2019		176,001,580	1,012,542
Beginning balance at Mar. 31, 2019	1,760,463	$ 1,761	$ 14,640	3,186,774	(14,640)	774,812	2,560	(2,217,469)	12,025
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,252					6,205			47
Other comprehensive income (loss)	(4,746)						(4,720)		(26)
Issuance of partnership interest in consolidated real estate ventures	3								3
Redemption of LP Units (in shares)		1,245
Redemption of LP Units	0			16					(16)
Share-based compensation activity (in shares)		94,150
Share-based compensation activity	1,451	$ 2		1,449
Share Issuance from/(to) Deferred Compensation Plan (in shares)		100,908	100,908
Share Issuance from/(to) Deferred Compensation Plan	0		$ 1,599		(1,599)
Distributions declared	(33,758)							(33,571)	(187)
Ending balance (in shares) at Jun. 30, 2019		176,197,883	1,113,450
Ending balance at Jun. 30, 2019	1,729,665	$ 1,763	$ 16,239	3,188,239	(16,239)	781,017	(2,160)	(2,251,040)	11,846
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,820					6,772			48
Other comprehensive income (loss)	(1,398)						(1,390)		(8)
Issuance of partnership interest in consolidated real estate ventures	2								2
Share-based compensation activity	1,105			1,105
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(2,965)	(7,908)
Share Issuance from/(to) Deferred Compensation Plan	0		$ (23)		23
Reallocation of Noncontrolling interest	0			6					(6)
Distributions declared	(33,757)							(33,570)	(187)
Ending balance (in shares) at Sep. 30, 2019		176,194,918	1,105,542
Ending balance at Sep. 30, 2019	1,702,437	$ 1,763	$ 16,216	3,189,350	(16,216)	787,789	(3,550)	(2,284,610)	11,695
Beginning balance (in shares) at Dec. 31, 2019		176,480,095	1,105,542
Beginning balance at Dec. 31, 2019	1,688,303	$ 1,766	$ 16,216	3,192,158	(16,216)	804,556	(2,370)	(2,318,233)	10,426
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,087					8,022			65
Other comprehensive income (loss)	(7,869)						(7,825)		(44)
Repurchase and retirement of Common Shares of Beneficial Interest (in shares)		(5,644,200)
Repurchase and retirement of Common Shares of Beneficial Interest	(53,858)	$ (57)		(53,801)
Share-based compensation activity (in shares)		142,468	50,967
Share-based compensation activity	2,031	$ 1		2,030
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(12,376)	(38,726)
Share Issuance from/(to) Deferred Compensation Plan	(193)		$ 796	(193)	(796)
Distributions declared	(32,687)							(32,500)	(187)
Ending balance (in shares) at Mar. 31, 2020		170,965,987	1,117,783
Ending balance at Mar. 31, 2020	1,603,814	$ 1,710	$ 17,012	3,140,194	(17,012)	812,578	(10,195)	(2,350,733)	10,260
Beginning balance (in shares) at Dec. 31, 2019		176,480,095	1,105,542
Beginning balance at Dec. 31, 2019	1,688,303	$ 1,766	$ 16,216	3,192,158	(16,216)	804,556	(2,370)	(2,318,233)	10,426
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	288,240
Other comprehensive income (loss)	$ (6,415)
Repurchase and retirement of Common Shares of Beneficial Interest (in shares)	(6,248,483)
Repurchase and retirement of Common Shares of Beneficial Interest	$ (60,000)
Ending balance (in shares) at Sep. 30, 2020		170,572,964	1,160,494
Ending balance at Sep. 30, 2020	1,815,782	$ 1,707	$ 17,516	3,136,851	(17,516)	1,091,095	(8,749)	(2,415,736)	10,614
Beginning balance (in shares) at Mar. 31, 2020		170,965,987	1,117,783
Beginning balance at Mar. 31, 2020	1,603,814	$ 1,710	$ 17,012	3,140,194	(17,012)	812,578	(10,195)	(2,350,733)	10,260
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,020					3,996			24
Other comprehensive income (loss)	226						225		1
Repurchase and retirement of Common Shares of Beneficial Interest (in shares)		(604,283)
Repurchase and retirement of Common Shares of Beneficial Interest	(6,141)	$ (5)		(6,136)
Share-based compensation activity (in shares)		166,628
Share-based compensation activity	1,668	$ 2		1,666
Share Issuance from/(to) Deferred Compensation Plan (in shares)		44,827	42,906
Share Issuance from/(to) Deferred Compensation Plan	(11)		$ 504	(11)	(504)
Reallocation of Noncontrolling interest	0			(123)					123
Distributions declared	(32,727)							(32,540)	(187)
Ending balance (in shares) at Jun. 30, 2020		170,573,159	1,160,689
Ending balance at Jun. 30, 2020	1,570,849	$ 1,707	$ 17,516	3,135,590	(17,516)	816,574	(9,970)	(2,383,273)	10,221
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	276,133					274,521			1,612
Other comprehensive income (loss)	1,228						1,221		7
Impact of deconsolidation of real estate venture	(1,017)								(1,017)
Distributions from consolidated real estate ventures	(22)								(22)
Share-based compensation activity	1,263			1,263
Share Issuance from/(to) Deferred Compensation Plan (in shares)		(195)	(195)
Share Issuance from/(to) Deferred Compensation Plan	(2)			(2)
Distributions declared	(32,650)							(32,463)	(187)
Ending balance (in shares) at Sep. 30, 2020		170,572,964	1,160,494
Ending balance at Sep. 30, 2020	$ 1,815,782	$ 1,707	$ 17,516	$ 3,136,851	$ (17,516)	$ 1,091,095	$ (8,749)	$ (2,415,736)	$ 10,614

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Consolidated Statements of Beneficiaries' Equity (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
Statement of Stockholders' Equity [Abstract]
Distributions declared (in dollars per share)	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.19

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Consolidated Statements of Partners' Equity - USD ($) $ in Thousands	Total	Accumulated Other Comprehensive Income (Loss)	Noncontrolling Interests	BRANDYWINE OPERATING PARTNERSHIP, L.P.	BRANDYWINE OPERATING PARTNERSHIP, L.P. Accumulated Other Comprehensive Income (Loss)	BRANDYWINE OPERATING PARTNERSHIP, L.P. Noncontrolling Interests	BRANDYWINE OPERATING PARTNERSHIP, L.P. General Partner Capital	BRANDYWINE OPERATING PARTNERSHIP, L.P. Cumulative effect of accounting change	BRANDYWINE OPERATING PARTNERSHIP, L.P. Cumulative effect of accounting change General Partner Capital
Beginning balance (in shares) at Dec. 31, 2018							176,873,324
Beginning Balance at Dec. 31, 2018				$ 1,798,508	$ 4,725	$ 2,192	$ 1,791,591	$ (5,336)	$ (5,336)
Net income	$ 4,583		$ 60	4,583		34	$ 4,549
Other comprehensive income (loss)	(2,483)	$ (2,469)	(14)	(2,483)	(2,483)
Deferred compensation obligation (in shares)							(458)
Deferred compensation obligation	0			0
Repurchase and retirement of LP units (in shares)							(1,337,169)
Repurchase and retirement of LP units				(17,281)			$ (17,281)
Issuance of partnership interest in consolidated real estate ventures	22		22	22		22
Share-based compensation activity (in shares)							465,883
Share-based compensation activity	3,677			3,677			$ 3,677
Adjustment of redeemable partnership units to liquidation value at period end				(3,088)			(3,088)
Distributions declared to general partnership unitholders				(33,560)			$ (33,560)
Ending balance (in shares) at Mar. 31, 2019							176,001,580
Ending Balance at Mar. 31, 2019				1,745,042	2,242	2,248	$ 1,740,552
Beginning balance (in shares) at Dec. 31, 2018							176,873,324
Beginning Balance at Dec. 31, 2018				1,798,508	4,725	2,192	$ 1,791,591	$ (5,336)	$ (5,336)
Net income	17,655			17,655
Other comprehensive income (loss)	(8,627)			(8,627)
Ending balance (in shares) at Sep. 30, 2019							176,194,918
Ending Balance at Sep. 30, 2019				1,687,709	(3,902)	2,277	$ 1,689,334
Beginning balance (in shares) at Mar. 31, 2019							176,001,580
Beginning Balance at Mar. 31, 2019				1,745,042	2,242	2,248	$ 1,740,552
Net income	6,252		47	6,252		13	$ 6,239
Other comprehensive income (loss)	(4,746)	(4,720)	(26)	(4,746)	(4,746)
Deferred compensation obligation (in shares)							100,908
Deferred compensation obligation	0			0
Repurchase and retirement of LP units (in shares)							1,245
Repurchase and retirement of LP units				0
Issuance of partnership interest in consolidated real estate ventures	3		3	3		3
Share-based compensation activity (in shares)							94,150
Share-based compensation activity	1,451			1,451			$ 1,451
Adjustment of redeemable partnership units to liquidation value at period end				1,014			1,014
Distributions declared to general partnership unitholders				(33,571)			$ (33,571)
Ending balance (in shares) at Jun. 30, 2019							176,197,883
Ending Balance at Jun. 30, 2019				1,715,445	(2,504)	2,264	$ 1,715,685
Net income	6,820		48	6,820		11	$ 6,809
Other comprehensive income (loss)	(1,398)	(1,390)	(8)	(1,398)	(1,398)
Deferred compensation obligation (in shares)							(2,965)
Deferred compensation obligation	0			0
Issuance of partnership interest in consolidated real estate ventures	2		2	2		2
Share-based compensation activity	1,105			1,105			$ 1,105
Adjustment of redeemable partnership units to liquidation value at period end				(695)			(695)
Distributions declared to general partnership unitholders				(33,570)			$ (33,570)
Ending balance (in shares) at Sep. 30, 2019							176,194,918
Ending Balance at Sep. 30, 2019				1,687,709	(3,902)	2,277	$ 1,689,334
Beginning balance (in shares) at Dec. 31, 2019							176,480,095
Beginning Balance at Dec. 31, 2019				1,672,915	(2,715)	1,091	$ 1,674,539
Net income	8,087		65	8,087		12	$ 8,075
Other comprehensive income (loss)	(7,869)	(7,825)	(44)	(7,869)	(7,869)
Deferred compensation obligation (in shares)							(12,376)
Deferred compensation obligation	(193)			(193)			$ (193)
Repurchase and retirement of LP units (in shares)							(5,644,200)
Repurchase and retirement of LP units				(53,858)			$ (53,858)
Share-based compensation activity (in shares)							142,468
Share-based compensation activity	2,031			2,031			$ 2,031
Adjustment of redeemable partnership units to liquidation value at period end				5,220			5,220
Distributions declared to general partnership unitholders				(32,500)			$ (32,500)
Ending balance (in shares) at Mar. 31, 2020							170,965,987
Ending Balance at Mar. 31, 2020				1,593,833	(10,584)	1,103	$ 1,603,314
Beginning balance (in shares) at Dec. 31, 2019							176,480,095
Beginning Balance at Dec. 31, 2019				1,672,915	(2,715)	1,091	$ 1,674,539
Net income	288,240			288,240
Other comprehensive income (loss)	(6,415)			(6,415)
Ending balance (in shares) at Sep. 30, 2020							170,572,964
Ending Balance at Sep. 30, 2020				1,805,832	(9,130)	72	$ 1,814,890
Beginning balance (in shares) at Mar. 31, 2020							170,965,987
Beginning Balance at Mar. 31, 2020				1,593,833	(10,584)	1,103	$ 1,603,314
Net income	4,020		24	4,020		10	$ 4,010
Other comprehensive income (loss)	226	225	1	226	226
Deferred compensation obligation (in shares)							44,827
Deferred compensation obligation	(11)			(11)			$ (11)
Repurchase and retirement of LP units (in shares)							(604,283)
Repurchase and retirement of LP units				(6,141)			$ (6,141)
Share-based compensation activity (in shares)							166,628
Share-based compensation activity	1,668			1,668			$ 1,668
Adjustment of redeemable partnership units to liquidation value at period end				(743)			(743)
Distributions declared to general partnership unitholders				(32,540)			$ (32,540)
Ending balance (in shares) at Jun. 30, 2020							170,573,159
Ending Balance at Jun. 30, 2020				1,560,312	(10,358)	1,113	$ 1,569,557
Net income	276,133		1,612	276,133		(2)	$ 276,135
Other comprehensive income (loss)	1,228	$ 1,221	7	1,228	1,228
Deferred compensation obligation (in shares)							(195)
Deferred compensation obligation	(2)			(2)			$ (2)
Distributions from consolidated real estate ventures	(22)		(22)	(22)		(22)
Share-based compensation activity	1,263			1,263			1,263
Impact of deconsolidation of real estate venture	$ (1,017)		$ (1,017)	(1,017)		(1,017)
Adjustment of redeemable partnership units to liquidation value at period end				400			400
Distributions declared to general partnership unitholders				(32,463)			$ (32,463)
Ending balance (in shares) at Sep. 30, 2020							170,572,964
Ending Balance at Sep. 30, 2020				$ 1,805,832	$ (9,130)	$ 72	$ 1,814,890

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Consolidated Statements of Partners' Equity (Parenthetical) - $ / shares	3 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019
BRANDYWINE OPERATING PARTNERSHIP, L.P. | General Partner Capital
Distributions to general partnership unitholders (USD per share)	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.19	$ 0.19

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Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income	$ 288,240	$ 17,655
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	145,314	158,738
Amortization of deferred financing costs	2,195	2,026
Amortization of debt discount/(premium), net	(55)	527
Amortization of stock compensation costs	5,544	6,145
Straight-line rent income	(8,903)	(8,287)
Amortization of acquired above (below) market leases, net	(3,657)	(7,236)
Ground rent expense	1,092	1,103
Provision for doubtful accounts	1,041	611
Net gain on real estate venture transactions	0	(3,594)
Net gain on sale of interests in real estate	(274,688)	(1,857)
Loss from Real Estate Ventures, net of distributions	9,880	5,134
Income tax provision (benefit)	(224)	46
Changes in assets and liabilities:
Accounts receivable	(6,263)	2,086
Other assets	(7,527)	(13,089)
Accounts payable and accrued expenses	10,782	194
Deferred income, gains and rent	(8,856)	(3,640)
Other liabilities	8,549	(1,312)
Net cash provided by operating activities	162,464	155,250
Cash flows from investing activities:
Acquisition of properties	(11,432)	0
Proceeds from the sale of properties	122,055	41,546
Proceeds from real estate venture sales	0	675
Proceeds from repayment of mortgage notes receivable	0	3,341
Capital expenditures for tenant improvements	(55,262)	(53,383)
Capital expenditures for redevelopments	(18,664)	(33,905)
Capital expenditures for developments	(51,435)	(55,002)
Advances for the purchase of tenant assets, net of repayments	1,265	(178)
Investment in unconsolidated Real Estate Ventures	(719)	(253)
Deposits for real estate	0	(1,990)
Capital distributions from Real Estate Ventures	6,916	35,206
Leasing costs paid	(16,747)	(13,184)
Net cash used in investing activities	(24,023)	(77,127)
Cash flows from financing activities:
Repayments of mortgage notes payable	(6,105)	(5,669)
Proceeds from credit facility borrowings	170,500	333,000
Repayments of credit facility borrowings	(170,500)	(279,000)
Proceeds from the exercise of stock options	47	800
Shares used for employee taxes upon vesting of share awards	(1,346)	(1,554)
Partner contributions to consolidated real estate venture	0	25
Repurchase and retirement of common shares	(60,000)	(17,282)
Distributions paid to shareholders	(98,651)	(100,573)
Distributions to noncontrolling interest	(561)	(560)
Net cash used in financing activities	(166,616)	(70,813)
Increase/(Decrease) in cash and cash equivalents and restricted cash	(28,175)	7,310
Cash and cash equivalents and restricted cash at beginning of year	91,170	23,211
Cash and cash equivalents and restricted cash at end of period	62,995	30,521
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	90,499	22,842
Restricted cash, beginning of period	671	369
Cash and cash equivalents and restricted cash at beginning of year	91,170	23,211
Cash and cash equivalents, end of period	62,256	29,925
Restricted cash, end of period	739	596
Cash and cash equivalents and restricted cash at end of period	62,995	30,521
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2020 and 2019 of $3,462 and $2,246, respectively	51,733	56,455
Cash paid for income taxes	719	1,169
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,705	33,759
Change in investment in real estate ventures as a result of dispositions	0	3,461
Change in operating real estate from deconsolidation of operating properties	269,268	0
Change in investment in real estate ventures from deconsolidation of operating properties	(263,358)	0
Change in mortgage notes payable from deconsolidation of operating properties	(220,271)	0
Change in capital expenditures financed through accounts payable at period end	(8,244)	(6,011)
Change in capital expenditures financed through retention payable at period end	754	(3,356)
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Cash flows from operating activities:
Net income	288,240	17,655
Adjustments to reconcile net income to net cash from operating activities:
Depreciation and amortization	145,314	158,738
Amortization of deferred financing costs	2,195	2,026
Amortization of debt discount/(premium), net	(55)	527
Amortization of stock compensation costs	5,544	6,145
Straight-line rent income	(8,903)	(8,287)
Amortization of acquired above (below) market leases, net	(3,657)	(7,236)
Ground rent expense	1,092	1,103
Provision for doubtful accounts	1,041	611
Net gain on real estate venture transactions	0	(3,594)
Net gain on sale of interests in real estate	(274,688)	(1,857)
Loss from Real Estate Ventures, net of distributions	9,880	5,134
Income tax provision (benefit)	(224)	46
Changes in assets and liabilities:
Accounts receivable	(6,263)	2,086
Other assets	(7,527)	(13,089)
Accounts payable and accrued expenses	10,782	194
Deferred income, gains and rent	(8,856)	(3,640)
Other liabilities	8,549	(1,312)
Net cash provided by operating activities	162,464	155,250
Cash flows from investing activities:
Acquisition of properties	(11,432)	0
Proceeds from the sale of properties	122,055	41,546
Proceeds from real estate venture sales	0	675
Proceeds from repayment of mortgage notes receivable	0	3,341
Capital expenditures for tenant improvements	(55,262)	(53,383)
Capital expenditures for redevelopments	(18,664)	(33,905)
Capital expenditures for developments	(51,435)	(55,002)
Advances for the purchase of tenant assets, net of repayments	1,265	(178)
Investment in unconsolidated Real Estate Ventures	(719)	(253)
Deposits for real estate	0	(1,990)
Capital distributions from Real Estate Ventures	6,916	35,206
Leasing costs paid	(16,747)	(13,184)
Net cash used in investing activities	(24,023)	(77,127)
Cash flows from financing activities:
Repayments of mortgage notes payable	(6,105)	(5,669)
Proceeds from credit facility borrowings	170,500	333,000
Repayments of credit facility borrowings	(170,500)	(279,000)
Proceeds from the exercise of stock options	47	800
Shares used for employee taxes upon vesting of share awards	(1,346)	(1,554)
Partner contributions to consolidated real estate venture	0	25
Repurchase and retirement of common shares	(60,000)	(17,282)
Distributions paid to shareholders	(99,212)	(101,133)
Net cash used in financing activities	(166,616)	(70,813)
Increase/(Decrease) in cash and cash equivalents and restricted cash	(28,175)	7,310
Cash and cash equivalents and restricted cash at beginning of year	91,170	23,211
Cash and cash equivalents and restricted cash at end of period	62,995	30,521
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents, beginning of period	90,499	22,842
Restricted cash, beginning of period	671	369
Cash and cash equivalents and restricted cash at beginning of year	91,170	23,211
Cash and cash equivalents, end of period	62,256	29,925
Restricted cash, end of period	739	596
Cash and cash equivalents and restricted cash at end of period	62,995	30,521
Supplemental disclosure:
Cash paid for interest, net of capitalized interest during the nine months ended September 30, 2020 and 2019 of $3,462 and $2,246, respectively	51,733	56,455
Cash paid for income taxes	719	1,169
Supplemental disclosure of non-cash activity:
Dividends and distributions declared but not paid	32,705	33,759
Change in investment in real estate ventures as a result of dispositions	0	3,461
Change in operating real estate from deconsolidation of operating properties	269,268	0
Change in investment in real estate ventures from deconsolidation of operating properties	(263,358)	0
Change in mortgage notes payable from deconsolidation of operating properties	(220,271)	0
Change in capital expenditures financed through accounts payable at period end	(8,244)	(6,011)
Change in capital expenditures financed through retention payable at period end	$ 754	$ (3,356)

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Consolidated Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Capitalized interest	$ 3,462	$ 2,246
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Capitalized interest	$ 3,462	$ 2,246

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Organization of the Parent Company and The Operating Partnership

9 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP

1. ORGANIZATION OF THE PARENT COMPANY AND THE OPERATING PARTNERSHIP

Brandywine Realty Trust (the "Parent Company") is a self-administered and self-managed real estate investment trust (“REIT”) engaged in the acquisition, development, redevelopment, ownership, management, and operation of a portfolio of office and mixed-use properties. The Parent Company owns its assets and conducts its operations through Brandywine Operating Partnership, L.P. (the "Operating Partnership") and subsidiaries of the Operating Partnership. The Parent Company is the sole general partner of the Operating Partnership and, as of September 30, 2020, owned a 99.4% interest in the Operating Partnership. The Parent Company’s common shares of beneficial interest are publicly traded on the New York Stock Exchange under the ticker symbol “BDN”. The Parent Company, the Operating Partnership, and their consolidated subsidiaries are collectively referred to as the "Company".

As of September 30, 2020, the Company owned 92 properties that contained an aggregate of approximately 14.7 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 September 30, 2020:

	Number of Properties	Rentable Square Feet
Office properties	84	13,641,289
Mixed-use properties	5	780,184
Core Properties	89	14,421,473
Development property	1	205,803
Redevelopment properties	2	64,070
The Properties	92	14,691,346

In addition to the Properties, as of September 30, 2020, the Company owned 228.5 acres of land held for development, of which 35.2 acres were held for sale. The Company also held leasehold interests in two land parcels totaling 1.8 acres, each acquired through prepaid 99-year ground leases, and held options to purchase approximately 55.5 additional acres of undeveloped land.  As of September 30, 2020, 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 14.2 million square feet, of which 0.2 million square feet relates to 35.2 acres held for sale. As of September 30, 2020, the Company also owned economic interests in eight unconsolidated real estate ventures (collectively, the “Real Estate Ventures”) (see Note 4, ''Investment in Unconsolidated Real Estate Ventures” for further information). The Properties and the properties owned by the Real Estate Ventures are located in or near Philadelphia, Pennsylvania; Austin, Texas; Metropolitan Washington, D.C.; Southern New Jersey; and Wilmington, Delaware.

The Company conducts its third-party real estate management services business primarily through wholly-owned management company subsidiaries. As of September 30, 2020, the management company subsidiaries were managing properties containing an aggregate of approximately 24.4 million net rentable square feet, of which approximately 14.7 million net rentable square feet related to Properties owned by the Company and approximately 9.7 million net rentable square feet related to properties owned by third parties and 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

9 Months Ended

Sep. 30, 2020

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 ("U.S. GAAP") have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, all adjustments consist solely of normal recurring matters, and result in a fair statement of the financial position of the Company as of September 30, 2020, the results of its operations for the three and nine months ended September 30, 2020 and 2019 and its cash flows for the nine months ended September 30, 2020 and 2019. 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 2019 Annual Report on Form 10-K filed with the SEC on March 2, 2020.

The consolidated balance sheet at December 31, 2019 has been derived from the audited financial statements as of that date but does not include all the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

The Company's Annual Report on Form 10-K for the year ended December 31, 2019 contains a discussion of our significant accounting policies under Note 2, "Summary of Significant Accounting Policies". There have been no significant changes in our significant accounting policies since December 31, 2019.

Risks and Uncertainties - COVID-19

Currently, one of the most significant risks and uncertainties is the potential adverse effect of the ongoing global COVID-19 pandemic, which has significantly slowed global economic activity, caused significant volatility in financial markets, and resulted in unprecedented job losses, causing many to fear an imminent global recession. The responses of many countries, including the U.S., have included mandatory quarantines, restrictions on business activities, including construction activities, restrictions on group gatherings, restrictions on travel and mandatory closures. These actions are creating disruption in the global economy and supply chains and adversely impacting many industries, including owners and developers of real estate. Moreover, there is significant uncertainty around the breadth and duration of business disruptions related to COVID-19, as well as its impact on the U.S. economy and consumer confidence. Demand for space at our properties is dependent on a variety of macroeconomic factors, such as employment levels, interest rates, changes in stock market valuations, rent levels and availability of competing space. The extent to which COVID-19 impacts our results will depend on future developments, many of which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity of COVID-19 and future action plans. The COVID-19 pandemic has caused continued negative economic impacts, market volatility, and business disruption, which could negatively impact our tenants’ ability to pay rent, our ability to lease vacant space, and our ability to complete development and redevelopment projects. These consequences, in turn, could materially impact our results of operations.

Accounting Standards Updates

In May 2020, the SEC adopted amendments to requirements for companies relating to significant acquisitions and dispositions of businesses as well as amendments to the significance tests in the ‘significant subsidiary’ definition. Additionally, significant modifications were made to the requirements related to the presentation of pro forma financial information. The amendments are effective on January 1, 2021, with early adoption permitted. The Company has elected to early adopt the amendments as of September 30, 2020.

On April 10, 2020, the Financial Accounting Standards Board (the "FASB") issued a Staff Q&A to respond to some frequently asked questions about accounting for lease concessions related to the effects of the COVID-19 pandemic. Consequently, for concessions related to the effects of the COVID-19 pandemic, an entity will not have to analyze each contract to determine whether enforceable rights and obligations for concessions exist in the contract and can elect to apply or not apply the lease modification guidance to those contracts. Entities may make the elections for any lessor-provided concessions related to the effects of the COVID-19 pandemic (e.g., deferrals of lease payments, cash payments made to the lessee, reduced future lease payments) as long as the concession does not result in a substantial increase in the rights of the lessor or the obligations of the lessee. The Company has elected to account for lease concessions as though the enforceable rights and obligations for the concessions existed in the original lease. To date, the impact of lease concessions granted has not had a material effect on the financial statements. The Company will continue to evaluate the impact of lease concessions and the appropriate accounting for those concessions.

In March 2020, the FASB issued ASU 2020-04 Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The amendments provide practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance is optional and is effective between March 12, 2020 and December 31, 2022. The guidance may be elected over time as reference rate reform activities occur. The Company continues to evaluate the impact of the guidance and may apply elections as applicable as additional changes in the market occur.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments Credit Losses (Topic 326), which changes how entities measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The guidance replaces the current incurred loss model with an expected loss approach, resulting in more timely recognition of such losses. In November 2018, the FASB released ASU 2018-19, Codification Improvements to Topic 326, Financial Instrument - Credit Losses, which clarifies that receivables arising from operating leases are not within the scope of Subtopic 326-20. The guidance was effective for the Company as of January 1, 2020. The Company adopted ASU 2016-13 effective January 1, 2020 and it did not have a material impact on the consolidated financial statements.

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Real Estate Investments

9 Months Ended

Sep. 30, 2020

Real Estate [Abstract]

REAL ESTATE INVESTMENTS

3. REAL ESTATE INVESTMENTS

As of September 30, 2020 and December 31, 2019, the gross carrying value of the operating properties was as follows (in thousands):

	September 30, 2020		December 31, 2019
Land	$	437,617	$	489,702
Building and improvements	2,851,185		3,049,395
Tenant improvements	426,963		467,362
Total	$	3,715,765	$	4,006,459

Acquisitions

The following table summarizes the property acquisitions during the nine months ended September 30, 2020 (dollars in thousands):

Property/Portfolio Name	Acquisition Date	Location	Property Type	Rentable Square Feet/Acres	Purchase Price
145 King of Prussia Road	February 27, 2020	Radnor, PA	Land	7.75 acres	$	11,250

Dispositions

The following table summarizes the property dispositions during the nine months ended September 30, 2020 (dollars in thousands):

Property/Portfolio Name	Disposition Date	Location	Property Type	Rentable Square Feet/Acres	Sales Price		Gain/(Loss) on Sale (a)
52 East Swedesford Road	March 19, 2020	Malvern, PA	Office	131,077	$	18,000	$	2,336
Keith Valley	June 15, 2020	Horsham, PA	Land	14.0 Acres	$	4,000	$	201
One and Two Commerce Square (b)	July 21, 2020	Philadelphia, PA	Office	1,896,142	$	115,000	$	271,905

(a) Gain/(Loss) on Sale is net of closing and other transaction related costs.

(b) The Company sold a preferred equity interest representing a 30% equity interest in two office buildings located in Philadelphia, Pennsylvania, to an unrelated third party for $115.0 million (the "Commerce Square Venture Transaction"), which resulted in deconsolidation of the properties and formation of Brandywine Commerce I LP and Brandywine Commerce II LP (collectively, the "Commerce Square Venture"). The transaction valued the properties at $600.0 million. The Company recorded its investment at fair value and recognized a gain of $271.9 million in "Net gain on disposition of real estate" on the Consolidated Statements of Operations during the three months ended September 30, 2020. See Note 4, ''Investment in Unconsolidated Real Estate Ventures," for further information.

Held for Sale

As of September 30, 2020 and December 31, 2019, the Company determined that the sale of two parcels of land within the Other segment totaling 35.2 acres was probable and classified these properties as held for sale. As such, $7.3 million was classified as “Assets held for sale, net” on the consolidated balance sheets.

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Investment in Unconsolidated Real Estate Ventures

9 Months Ended

Sep. 30, 2020

Equity Method Investments and Joint Ventures [Abstract]

INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

4. INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES

As of September 30, 2020, the Company held ownership interests in eight unconsolidated real estate ventures for a net aggregate investment balance of $367.8 million, which includes a negative investment balance in one unconsolidated real estate venture of $9.7 million, reflected within "Other liabilities" on the consolidated balance sheets. As of September 30, 2020, four of the real estate ventures owned properties that contained an aggregate of approximately 7.3 million net rentable square feet of office space; two real estate ventures owned 1.4 acres of land held for development; one real estate venture owned 1.3 acres of land in active development; and one real estate venture owned a residential tower that contained 321 apartment units.

The Company accounts for its interests in the Real Estate Ventures, which range from 15% to 70%, using the equity method. Certain of the Real Estate Ventures are subject to specified priority allocations of distributable cash.

The Company earned management fees from its Real Estate Ventures of $1.3 million and $3.2 million for the three and nine months ended September 30, 2020, respectively, and $1.0 million and $3.2 million for the three and nine months ended September 30, 2019, respectively.

The Company earned leasing commission income from its Real Estate Ventures of $0.2 million and $0.9 million for the three and nine months ended September 30, 2020, respectively, and $0.3 million and $0.8 million for the three and nine months ended September 30, 2019, respectively.

The Company had outstanding accounts receivable balances from its Real Estate Ventures of $1.4 million and $0.8 million as of September 30, 2020 and December 31, 2019, 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 Real Estate Ventures.

The following is a summary of the financial position of the Real Estate Ventures in which the Company held interests as of September 30, 2020 and December 31, 2019 (in thousands):

	September 30, 2020		December 31, 2019
Net property	$	1,363,889	$	834,367
Other assets	442,834		342,002
Other liabilities	323,442		290,071
Debt, net	833,716		585,068
Equity (a)	649,565		301,230

(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 Real Estate Ventures in which the Company held interests during the three and nine-month periods ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Revenue	$	43,109		$	32,726		$	105,554		$	101,148
Operating expenses	(23,870		)	(17,869		)	(59,838		)	(53,956		)
Interest expense, net	(6,175		)	(6,180		)	(16,320		)	(16,421		)
Depreciation and amortization	(22,345		)	(13,094		)	(47,493		)	(40,279		)
Gain on early extinguishment of debt	—			4,371			—			4,371
Net loss	$	(9,281	)	$	(46	)	$	(18,097	)	$	(5,137	)
Ownership interest %	Various			Various			Various			Various
Company's share of net income (loss)	$	(5,812	)	$	(1,945	)	$	(9,892	)	$	(4,765	)
Basis adjustments and other	24			(20		)	10			(49		)
Equity in loss of Real Estate Ventures	$	(5,788	)	$	(1,965	)	$	(9,882	)	$	(4,814	)

Commerce Square Venture

On July 21, 2020, the Company sold a 30% preferred equity interest in the entities that own One Commerce Square and Two Commerce Square. After the transaction, the Company owns approximately 32% of the equity interest in Commerce Square Venture through preferred equity interest holdings and approximately 38% of the equity interest in Commerce Square Venture as the sole common equity holder, for a combined approximately 70% equity interest in the venture. The properties held by the newly

formed joint ventures remain encumbered by the existing mortgages, which had a $222.1 million principal balance outstanding on the transaction date.

Based on the facts and circumstances at the formation of the Commerce Square Venture, the Company determined that the venture is not a variable interest entity. As a result, the Company used the voting interest model under the accounting standard for consolidation in order to determine whether to consolidate the Commerce Square Venture. Based upon each member's substantive participating rights over the activities of the Commerce Square Venture under the operating and related agreements of the Commerce Square Venture, the Company does not have a controlling interest in the properties as the third party investor holds substantive participating rights in the properties. Therefore, the Company deconsolidated the properties and the venture is accounted for under the equity method of accounting. As a result, the Company measured its equity interest at fair value based on the fair value of the Commerce Square Venture properties and the distribution provisions of the real estate venture agreement. Since the Company retains a non-controlling interest in the Commerce Square Venture and there are no other facts and circumstances that preclude sale recognition, the contribution qualifies as the sale of a nonfinancial asset under the relevant guidance.

Under the conventional approach of accounting for equity method investments, an investor applies its percentage ownership interest to the venture’s net income or loss to determine the investor’s share of the earnings or losses of the venture. This approach is inappropriate if the venture’s capital structure gives different rights and priorities to its investors. Therefore, the Company follows the hypothetical liquidation at book value (“HLBV”) method in determining its share of the venture’s earnings or losses for the reporting period as this method better reflects the Company’s claim on the venture’s book value at the end of each reporting period. Earnings for this equity method investment are recognized in accordance with the investment agreement and, where applicable, based upon the allocation of the investment’s net assets at book value as if the investment was hypothetically liquidated at the end of each reporting period.

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Leases

9 Months Ended

Sep. 30, 2020

Leases [Abstract]

LEASES

5. LEASES

Lessor Accounting

The table below sets forth the allocation of lease revenue between fixed contractual payments and variable lease payments for the three and nine months ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Lease Revenue	2020		2019		2020		2019
Fixed contractual payments	$	95,751	$	105,073	$	302,146	$	314,999
Variable lease payments	22,716		27,475		80,824		83,989
Total	$	118,467	$	132,548	$	382,970	$	398,988

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Intangible Assets and Liabilities

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

INTANGIBLE ASSETS AND LIABILITIES

6. INTANGIBLE ASSETS AND LIABILITIES

As of September 30, 2020 and December 31, 2019, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	September 30, 2020
	Total Cost		Accumulated Amortization			Intangible Assets, net
Intangible assets, net:
In-place lease value	$	89,504	$	(39,302	)	$	50,202
Tenant relationship value	2,610		(2,399		)	211
Above market leases acquired	1,140		(838		)	302
Total intangible assets, net	$	93,254	$	(42,539	)	$	50,715
	Total Cost		Accumulated Amortization			Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	29,189	$	(11,689	)	$	17,500

	December 31, 2019
	Total Cost		Accumulated Amortization			Intangible Assets, net
Intangible assets, net:
In-place lease value	$	167,357	$	(84,123	)	$	83,234
Tenant relationship value	5,268		(4,815		)	453
Above market leases acquired	4,956		(3,792		)	1,164
Total intangible assets, net	$	177,581	$	(92,730	)	$	84,851
	Total Cost		Accumulated Amortization			Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	44,757	$	(22,494	)	$	22,263

As of September 30, 2020, the Company’s annual amortization for its intangible assets/liabilities, assuming no prospective early lease terminations, was as follows (dollars in thousands):

	Assets		Liabilities
2020 (three months remaining)	$	4,273	$	1,011
2021	14,789		3,601
2022	9,627		2,065
2023	7,564		1,651
2024	5,214		1,425
Thereafter	9,248		7,747
Total	$	50,715	$	17,500

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Debt Obligations

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

DEBT OBLIGATIONS

7. DEBT OBLIGATIONS

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of September 30, 2020 and December 31, 2019 (in thousands):

	September 30, 2020			December 31, 2019			Effective Interest Rate	Maturity Date
MORTGAGE DEBT:
Two Logan Square (a)	$	79,781		$	81,103		3.98%	October 2020
Four Tower Bridge	9,107			9,291			4.50%	February 2021
One Commerce Square (b)	—			116,571			3.64%	April 2023
Two Commerce Square (b)	—			108,472			4.51%	April 2023
Principal balance outstanding	88,888			315,437
Plus: fair market value premium (discount), net	25			(1,383		)
Less: deferred financing costs	—			(242		)
Mortgage indebtedness	$	88,913		$	313,812
UNSECURED DEBT
Seven-Year Term Loan - Swapped to fixed	$	250,000		$	250,000		2.87%	October 2022
$350.0M 3.95% Guaranteed Notes due 2023	350,000			350,000			3.87%	February 2023
$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 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%	March 2035
Indenture IB (Preferred Trust I) - Swapped to fixed	25,774			25,774			3.30%	April 2035
Indenture II (Preferred Trust II)	25,774			25,774			LIBOR + 1.25%	July 2035
Principal balance outstanding	1,828,610			1,828,610
Plus: original issue premium (discount), net	10,626			12,090
Less: deferred financing costs	(8,638		)	(10,094		)
Total unsecured indebtedness	$	1,830,598		$	1,830,606
Total Debt Obligations	$	1,919,511		$	2,144,418

(a) On October 21, 2020, the Company acquired the mortgage on this property from the lender. See Note 15, "Subsequent Events," for further information.

(b) The properties encumbered by these mortgages were deconsolidated as a result of the Commerce Square Venture Transaction.. See Note 3, ''Real Estate Investments," for further information.

In addition to the debt described above, the Company utilizes borrowings under its unsecured revolving 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 LIBOR plus 1.10%. The interest rate and facility fee are subject to adjustment upon a change in the Company’s unsecured debt ratings. During the nine months ended September 30, 2020, the weighted-average interest rate on Unsecured Credit Facility borrowings was 1.6% resulting in a nominal amount of interest expense. As of September 30, 2020, the Company had no borrowings under the Unsecured Credit Facility.

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

The Company was in compliance with all financial covenants as of September 30, 2020. Certain of the covenants restrict the Company’s ability to obtain alternative sources of capital.

As of September 30, 2020, the Company’s aggregate scheduled principal payments of debt obligations are as follows (in thousands):

2020 (three months remaining)	$	79,845
2021	9,043
2022	250,000
2023	350,000
2024	350,000
Thereafter	878,610
Total principal payments	1,917,498
Net unamortized premiums/(discounts)	10,651
Net deferred financing costs	(8,638		)
Outstanding indebtedness	$	1,919,511

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Fair Value of Financial Instruments

9 Months Ended

Sep. 30, 2020

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 September 30, 2020 and December 31, 2019, respectively. The discount rate used in calculating fair value is the sum of the current risk free rate and the risk premium on the date of measurement of the instruments or obligations. Considerable judgment is necessary to interpret market data and to develop the related estimates of fair value. Accordingly, the estimates presented are not necessarily indicative of the amounts that the Company could realize upon disposition. The use of different estimates and valuation methodologies may have a material effect on the fair value amounts shown. The Company believes that the carrying amounts reflected in the consolidated balance sheets at September 30, 2020 and December 31, 2019 approximate the fair values for cash and cash equivalents, accounts receivable, other assets and liabilities, accounts payable and accrued expenses because they are short-term in duration. The following are financial instruments for which the Company’s estimates of fair value differ from the carrying amounts (in thousands):

	September 30, 2020				December 31, 2019
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,503,035	$	1,566,650	$	1,503,435	$	1,591,830
Variable rate debt	$	327,563	$	308,519	$	327,171	$	309,947
Mortgage notes payable	$	88,913	$	89,034	$	313,812	$	317,031
Notes receivable	$	44,430	$	47,415	$	44,430	$	43,322

(a) Net of deferred financing costs of $7.6 million and $8.7 million for unsecured notes payable, $1.0 million and $1.4 million for variable rate debt and $0.0 million and $0.2 million for mortgage notes payable as of September 30, 2020 and December 31, 2019.

On June 26, 2018, the Company provided a $44.4 million mortgage loan to Brandywine 1919 Ventures, an unconsolidated real estate venture in which the Company holds a 50% ownership interest, and recorded a related party note receivable of $44.4 million within 'Other assets' on the consolidated balance sheets. Refer to Note 4, ''Investment in Unconsolidated Real Estate Ventures" to the consolidated financial statements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2019 for further detail regarding this financing.

The Company used quoted market prices as of September 30, 2020 and December 31, 2019 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 mortgage notes payable and 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 fair value of the mortgage notes payable was determined using a discounted cash flow model that considered the contractual interest and principal payments discounted at a blended market rate for loans with similar terms, maturities and loan-to-value. These inputs have been categorized as Level 3 because the Company considers the rates used in the valuation techniques to be unobservable.

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

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

Disclosure about the fair value of financial instruments is based upon pertinent information available to management as of September 30, 2020 and December 31, 2019. Although management is not aware of any factors that would significantly affect the fair value amounts, such amounts were not comprehensively revalued for purposes of these financial statements since September 30, 2020. Current estimates of fair value may differ from the amounts presented herein.

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Derivative Financial Instruments

9 Months Ended

Sep. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

DERIVATIVE FINANCIAL INSTRUMENTS

9. DERIVATIVE FINANCIAL INSTRUMENTS

The following table summarizes the terms and fair values of the Company’s derivative financial instruments as of September 30, 2020 and December 31, 2019. The notional amounts provide an indication of the extent of the Company’s involvement in these instruments at that time, but do not represent exposure to credit, interest rate or market risks (amounts presented in thousands).

Hedge Product	Hedge Type	Designation		Notional Amount				Strike		Trade Date	Maturity Date	Fair value
				9/30/2020		12/31/2019						9/30/2020			12/31/2019
Liabilities
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	2.868	%	October 8, 2015	October 8, 2022	$	(7,597	)	$	(562	)
Swap	Interest Rate	Cash Flow	(a)	25,774		25,774		3.300	%	December 22, 2011	January 30, 2021	(234		)	(94		)
				$	275,774	$	275,774

(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.

Disclosure about the fair value of derivative instruments is based upon pertinent information available to management as of September 30, 2020 and December 31, 2019. Although management is not aware of any factors that would significantly affect the fair value amounts, such amounts have not been comprehensively revalued for purposes of these financial statements since September 30, 2020. Current estimates of fair value may differ from the amounts presented herein.

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Limited Partners' Non-Controlling Interests in the Parent Company

9 Months Ended

Sep. 30, 2020

Noncontrolling Interest [Abstract]

LIMITED PARTNERS' NON-CONTROLLING 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 interests in the accompanying consolidated balance sheet of the Parent Company was $10.5 million and $9.3 million as of September 30, 2020 and December 31, 2019, respectively. Under the applicable accounting guidance, the redemption value of limited partnership units are carried at fair value. The Parent Company believes that the aggregate settlement value of these interests (based on the

number of units outstanding and the closing price of the common shares on the balance sheet date) was approximately $10.2 million and $15.5 million as of September 30, 2020 and December 31, 2019, respectively.

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Beneficiaries Equity of the Parent Company

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

BENEFICIARIES' EQUITY OF THE PARENT COMPANY

11. BENEFICIARIES' EQUITY OF THE PARENT COMPANY

Earnings per Share (EPS)

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

	Three Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	276,133		$	276,133		$	6,820		$	6,820
Net income attributable to noncontrolling interests	(1,612		)	(1,612		)	(48		)	(48		)
Nonforfeitable dividends allocated to unvested restricted shareholders	(93		)	(93		)	(93		)	(93		)
Net income attributable to common shareholders	$	274,428		$	274,428		$	6,679		$	6,679
Denominator
Weighted-average shares outstanding	170,573,028			170,573,028			176,195,244			176,195,244
Contingent securities/Share based compensation	—			453,464			—			555,356
Weighted-average shares outstanding	170,573,028			171,026,492			176,195,244			176,750,600
Earnings per Common Share:
Net income attributable to common shareholders	$	1.61		$	1.60		$	0.04		$	0.04

	Nine Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	288,240		$	288,240		$	17,655		$	17,655
Net income attributable to noncontrolling interests	(1,701		)	(1,701		)	(155		)	(155		)
Nonforfeitable dividends allocated to unvested restricted shareholders	(317		)	(317		)	(305		)	(305		)
Net income attributable to common shareholders	$	286,222		$	286,222		$	17,195		$	17,195
Denominator
Weighted-average shares outstanding	172,380,410			172,380,410			176,066,507			176,066,507
Contingent securities/Share based compensation	—			355,026			—			551,219
Weighted-average shares outstanding	172,380,410			172,735,436			176,066,507			176,617,726
Earnings per Common Share:
Net income attributable to common shareholders	$	1.66		$	1.66		$	0.10		$	0.10

Redeemable common limited partnership units totaling 981,634 at September 30, 2020 and 981,626 at September 30, 2019, 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 nine months ended September 30, 2020 and 2019, 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 incentive plan.

Common Shares

On September 15, 2020 the Parent Company declared a distribution of $0.19 per common share, totaling $32.7 million, which was paid on October 21, 2020 to shareholders of record as of October 7, 2020.

The Parent Company maintains a common share repurchase program under which the Board of Trustees has authorized the Parent Company to repurchase common shares. On January 3, 2019, the Board of Trustees authorized the repurchase of up to $150.0 million common shares from and after January 3, 2019. During the nine months ended September 30, 2020, the Company repurchased and retired 6,248,483 common shares at an average price of $9.60 per share, totaling $60.0 million. During the nine

months ended September 30, 2019, the Company repurchased and retired 1,337,169 common shares at an average price of $12.92 per share, totaling $17.3 million.

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Partners' Equity Of The Parent Company

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

PARTNERS' EQUITY OF THE PARENT COMPANY

12. PARTNERS' EQUITY OF THE PARENT COMPANY

Earnings per Common Partnership Unit

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

	Three Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	276,133		$	276,133		$	6,820		$	6,820
Net (income) loss attributable to noncontrolling interests	2			2			(11		)	(11		)
Nonforfeitable dividends allocated to unvested restricted unitholders	(93		)	(93		)	(93		)	(93		)
Net income attributable to common unitholders	$	276,042		$	276,042		$	6,716		$	6,716
Denominator
Weighted-average units outstanding	171,554,662			171,554,662			177,176,870			177,176,870
Contingent securities/Share based compensation	—			453,464			—			555,356
Total weighted-average units outstanding	171,554,662			172,008,126			177,176,870			177,732,226
Earnings per Common Partnership Unit:
Net income attributable to common unitholders	1.61			1.60			0.04			0.04

	Nine Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	288,240		$	288,240		$	17,655		$	17,655
Net income attributable to noncontrolling interests	(20		)	(20		)	(58		)	(58		)
Nonforfeitable dividends allocated to unvested restricted unitholders	(317		)	(317		)	(305		)	(305		)
Net income attributable to common unitholders	$	287,903		$	287,903		$	17,292		$	17,292
Denominator
Weighted-average units outstanding	173,362,044			173,362,044			177,048,621			177,048,621
Contingent securities/Share based compensation	—			355,026			—			551,219
Total weighted-average units outstanding	173,362,044			173,717,070			177,048,621			177,599,840
Earnings per Common Partnership Unit:
Net income attributable to common unitholders	$	1.66		$	1.66		$	0.10		$	0.10

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 share. For the three and nine months ended September 30, 2020 and 2019, earnings representing nonforfeitable dividends were allocated to the unvested restricted units issued to the Parent Company's executives and other employees under the Parent Company's shareholder-approved long-term incentive plan.

Common Partnership Units

On September 15, 2020 the Operating Partnership declared a distribution of $0.19 per common partnership unit, totaling $32.7 million, which was paid on October 21, 2020 to unitholders of record as of October 7, 2020.

In connection with the Parent Company’s common share repurchase program, one common unit of the Operating Partnership is retired for each common share repurchased. During the nine months ended September 30, 2020, the Company retired 6,248,483 common partnership units at an average price of $9.60 per unit, totaling $60.0 million, in connection with an equal number of common share repurchases. During the nine months ended September 30, 2019, the Company retired 1,337,169 common partnership units at an average price of $12.92 per unit, totaling $17.3 million, in connection with an equal number of share repurchases.

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Segment Information

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

SEGMENT INFORMATION

13. SEGMENT INFORMATION

As of September 30, 2020, the Company owns and manages properties within five segments: (1) Philadelphia Central Business District ("Philadelphia CBD"), (2) Pennsylvania Suburbs, (3) Austin, Texas (4) Metropolitan Washington, D.C. and (5) 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 Metropolitan Washington, D.C. segment includes properties in the District of Columbia, Northern Virginia and Southern Maryland. The Other segment includes properties located in Camden County, New Jersey and New Castle County, Delaware. In addition to the five 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 following tables provide selected asset information and results of operations of the Company's reportable segments (in thousands):

Real estate investments, at cost:
	September 30, 2020		December 31, 2019
Philadelphia CBD (a)	$	1,414,041	$	1,726,299
Pennsylvania Suburbs	1,000,214		1,003,890
Austin, Texas	726,295		721,255
Metropolitan Washington, D.C.	488,139		468,035
Other	87,076		86,980
Operating Properties	$	3,715,765	$	4,006,459
Right of use asset - operating leases, net	$	21,145	$	21,656
Corporate
Construction-in-progress	$	186,853	$	180,718
Land held for development (b)	$	115,474	$	96,124
Prepaid leasehold interests in land held for development, net (c)	$	39,287	$	39,592

(a) Decrease primarily due to the Commerce Square Venture Transaction. See Note 3, ''Real Estate Investments," for further information.

(b) Does not include 35.2 acres of land classified as held for sale as of September 30, 2020 and December 31, 2019.

(c) Includes leasehold interests in prepaid 99-year ground leases at 3025 and 3001-3003 JFK Boulevard, in Philadelphia, Pennsylvania as of September 30, 2020 and December 31, 2019.

Net operating income:

	Three Months Ended September 30,
	2020								2019
	Total revenue		Operating expenses (a)			Net operating income (loss)			Total revenue		Operating expenses (a)			Net operating income (loss)
Philadelphia CBD	$	52,640	$	(18,522	)	$	34,118		$	66,105	$	(24,773	)	$	41,332
Pennsylvania Suburbs	34,649		(11,141		)	23,508			34,818		(11,667		)	23,151
Austin, Texas	25,328		(9,944		)	15,384			26,280		(9,302		)	16,978
Metropolitan Washington, D.C.	9,675		(5,236		)	4,439			13,179		(5,999		)	7,180
Other	3,188		(2,374		)	814			3,706		(2,691		)	1,015
Corporate	626		(1,782		)	(1,156		)	1,243		(1,642		)	(399		)
Operating properties	$	126,106	$	(48,999	)	$	77,107		$	145,331	$	(56,074	)	$	89,257

	Nine Months Ended September 30,
	2020								2019
	Total revenue		Operating expenses (a)			Net operating income (loss)			Total revenue		Operating expenses (a)			Net operating income (loss)
Philadelphia CBD	$	181,203	$	(65,615	)	$	115,588		$	196,859	$	(75,311	)	121,548
Pennsylvania Suburbs	106,569		(34,980		)	71,589			104,744		(36,466		)	68,278
Austin, Texas	76,921		(30,032		)	46,889			77,234		(28,182		)	49,052
Metropolitan Washington, D.C.	30,520		(15,678		)	14,842			40,372		(18,542		)	21,830
Other	10,221		(7,434		)	2,787			10,352		(7,226		)	3,126
Corporate	2,597		(4,652		)	(2,055		)	3,817		(4,969		)	(1,152		)
Operating properties	$	408,031	$	(158,391	)	$	249,640		$	433,378	$	(170,696	)	$	262,682

(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 September 30,						Nine Months Ended September 30,
	September 30, 2020			December 31, 2019			2020			2019			2020			2019
Philadelphia CBD (a)	$	277,161		$	17,524		$	(2,737	)	$	55		$	(2,575	)	$	217
Metropolitan Washington, D.C.	100,325			102,840			(1,367		)	(528		)	(2,463		)	(963		)
MAP Venture (b)	(9,715		)	(70		)	(1,684		)	(1,602		)	(4,844		)	(4,414		)
Other	—			—			—			110			—			346
Total	$	367,771		$	120,294		$	(5,788	)	$	(1,965	)	$	(9,882	)	$	(4,814	)

(a) Increase primarily due to the Commerce Square Venture Transaction. See Note 3, ''Real Estate Investments," for further information.

(b) Included in "Other liabilities" on the consolidated balance sheets.

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 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, as defined by GAAP, to consolidated NOI, (in thousands):

	Three Months Ended September 30,					Nine Months Ended September 30,
	2020			2019		2020		2019
Net income	$	276,133		$	6,820	$	288,240	$	17,655
Plus:
Interest expense	16,310			20,400		56,510		61,273
Interest expense - amortization of deferred financing costs	715			694		2,195		2,026
Depreciation and amortization	43,533			55,627		145,314		158,738
General and administrative expenses	7,069			6,974		23,973		25,217
Equity in loss of Real Estate Ventures	5,788			1,965		9,882		4,814
Less:
Interest income	467			558		1,487		1,636
Income tax (provision) benefit	(2		)	—		224		(46		)
Net gain on disposition of real estate	271,901			356		274,487		356
Net gain on sale of undepreciated real estate	—			250		201		1,501
Net gain on real estate venture transactions	75			2,059		75		3,594
Consolidated net operating income	$	77,107		$	89,257	$	249,640	$	262,682

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Commitments and Contingencies

9 Months Ended

Sep. 30, 2020

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.

Letters-of-Credit

Under certain mortgages, the Company has funded required leasing and capital reserve accounts for the benefit of the mortgage lenders with letters-of-credit. There were no letters-of-credit for a mortgage lender as of September 30, 2020. Certain of the tenant rents at properties that secure these mortgage loans are deposited into the loan servicer’s depository accounts, which are used to fund debt service, operating expenses, capital expenditures and the escrow and reserve accounts, as necessary. Any excess cash is included in cash and cash equivalents.

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

As of September 30, 2020, the Company’s Real Estate Ventures had aggregate indebtedness of $842.2 million. These loans are generally mortgage or construction loans, most of which are nonrecourse to the Company, except for customary recourse carve-outs. As of September 30, 2020, the $150.0 million construction loan obtained by 4040 Wilson, located in Arlington, Virginia, for which the Company has a payment guarantee up to $41.3 million, is recourse to the Company. In addition, during construction undertaken by the Real Estate Ventures, including 4040 Wilson, the Company has provided, and expects to continue to provide, cost overrun and completion guarantees, with rights of contribution among partners or members in the real estate ventures, as well as customary environmental indemnities and guarantees of customary exceptions to nonrecourse provisions in loan agreements.  

Other Commitments or Contingencies

In connection with the Schuylkill Yards Project, the Company entered into a neighborhood engagement program and, as of September 30, 2020, had $7.7 million of future fixed contractual obligations. The Company also committed to fund additional

contributions under the program. As of September 30, 2020, the Company estimates that these additional contributions, which are not fixed under the terms of agreement, will be $2.6 million.

In connection with the formation of the Commerce Square Venture, the Company has committed to investing an additional $20.0 million of preferred equity in the properties on a pari passu basis with its joint venture partner.

As of September 30, 2020, the Company was under contract to acquire an office property containing approximately 170,000 rentable square feet located in Radnor, Pennsylvania for a purchase price of $20.3 million. The Company has paid $1.0 million towards the purchase price in the form of a non-refundable deposit and the transaction is expected to close during the fourth quarter of 2020.

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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Subsequent Events

9 Months Ended

Sep. 30, 2020

Subsequent Events [Abstract]

Subsequent Events

15. SUBSEQUENT EVENTS

On October 21, 2020, the Company acquired the $79.8 million first mortgage on the property located at Two Logan Square in Philadelphia, Pennsylvania from the current lender at an amount equal to the outstanding principal balance and accrued interest thereon. The Company acquired the first mortgage with cash-on-hand and proceeds from our unsecured line of credit.

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Basis of Presentation (Policies)

9 Months Ended

Sep. 30, 2020

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 ("U.S. GAAP") have been condensed or omitted pursuant to such rules and regulations. In the opinion of management, all adjustments consist solely of normal recurring matters, and result in a fair statement of the financial position of the Company as of September 30, 2020, the results of its operations for the three and nine months ended September 30, 2020 and 2019 and its cash flows for the nine months ended September 30, 2020 and 2019. 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 2019 Annual Report on Form 10-K filed with the SEC on March 2, 2020.

The consolidated balance sheet at December 31, 2019 has been derived from the audited financial statements as of that date but does not include all the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.

The Company's Annual Report on Form 10-K for the year ended December 31, 2019 contains a discussion of our significant accounting policies under Note 2, "Summary of Significant Accounting Policies". There have been no significant changes in our significant accounting policies since December 31, 2019.

Significant Risks and Uncertainties

Risks and Uncertainties - COVID-19

Currently, one of the most significant risks and uncertainties is the potential adverse effect of the ongoing global COVID-19 pandemic, which has significantly slowed global economic activity, caused significant volatility in financial markets, and resulted in unprecedented job losses, causing many to fear an imminent global recession. The responses of many countries, including the U.S., have included mandatory quarantines, restrictions on business activities, including construction activities, restrictions on group gatherings, restrictions on travel and mandatory closures. These actions are creating disruption in the global economy and supply chains and adversely impacting many industries, including owners and developers of real estate. Moreover, there is significant uncertainty around the breadth and duration of business disruptions related to COVID-19, as well as its impact on the U.S. economy and consumer confidence. Demand for space at our properties is dependent on a variety of macroeconomic factors, such as employment levels, interest rates, changes in stock market valuations, rent levels and availability of competing space. The extent to which COVID-19 impacts our results will depend on future developments, many of which are highly uncertain and cannot be predicted, including new information which may emerge concerning the severity of COVID-19 and future action plans. The COVID-19 pandemic has caused continued negative economic impacts, market volatility, and business disruption, which could negatively impact our tenants’ ability to pay rent, our ability to lease vacant space, and our ability to complete development and redevelopment projects. These consequences, in turn, could materially impact our results of operations.

Adoption of New Accounting Guidance

Accounting Standards Updates

In May 2020, the SEC adopted amendments to requirements for companies relating to significant acquisitions and dispositions of businesses as well as amendments to the significance tests in the ‘significant subsidiary’ definition. Additionally, significant modifications were made to the requirements related to the presentation of pro forma financial information. The amendments are effective on January 1, 2021, with early adoption permitted. The Company has elected to early adopt the amendments as of September 30, 2020.

On April 10, 2020, the Financial Accounting Standards Board (the "FASB") issued a Staff Q&A to respond to some frequently asked questions about accounting for lease concessions related to the effects of the COVID-19 pandemic. Consequently, for concessions related to the effects of the COVID-19 pandemic, an entity will not have to analyze each contract to determine whether enforceable rights and obligations for concessions exist in the contract and can elect to apply or not apply the lease modification guidance to those contracts. Entities may make the elections for any lessor-provided concessions related to the effects of the COVID-19 pandemic (e.g., deferrals of lease payments, cash payments made to the lessee, reduced future lease payments) as long as the concession does not result in a substantial increase in the rights of the lessor or the obligations of the lessee. The Company has elected to account for lease concessions as though the enforceable rights and obligations for the concessions existed in the original lease. To date, the impact of lease concessions granted has not had a material effect on the financial statements. The Company will continue to evaluate the impact of lease concessions and the appropriate accounting for those concessions.

In March 2020, the FASB issued ASU 2020-04 Reference Rate Reform (Topic 848) Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The amendments provide practical expedients for reference rate reform related activities that impact debt, leases, derivatives and other contracts. The guidance is optional and is effective between March 12, 2020 and December 31, 2022. The guidance may be elected over time as reference rate reform activities occur. The Company continues to evaluate the impact of the guidance and may apply elections as applicable as additional changes in the market occur.

In June 2016, the FASB issued ASU No. 2016-13, Financial Instruments Credit Losses (Topic 326), which changes how entities measure credit losses for most financial assets and certain other instruments that are not measured at fair value through net income. The guidance replaces the current incurred loss model with an expected loss approach, resulting in more timely recognition of such losses. In November 2018, the FASB released ASU 2018-19, Codification Improvements to Topic 326, Financial Instrument - Credit Losses, which clarifies that receivables arising from operating leases are not within the scope of Subtopic 326-20. The guidance was effective for the Company as of January 1, 2020. The Company adopted ASU 2016-13 effective January 1, 2020 and it did not have a material impact on the consolidated financial statements.

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Organization of the Parent Company and The Operating Partnership (Tables)

9 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Summary 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 September 30, 2020:

	Number of Properties	Rentable Square Feet
Office properties	84	13,641,289
Mixed-use properties	5	780,184
Core Properties	89	14,421,473
Development property	1	205,803
Redevelopment properties	2	64,070
The Properties	92	14,691,346

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Real Estate Investments (Tables)

9 Months Ended

Sep. 30, 2020

Real Estate [Abstract]

Gross Carrying Value of Operating Properties

As of September 30, 2020 and December 31, 2019, the gross carrying value of the operating properties was as follows (in thousands):

	September 30, 2020		December 31, 2019
Land	$	437,617	$	489,702
Building and improvements	2,851,185		3,049,395
Tenant improvements	426,963		467,362
Total	$	3,715,765	$	4,006,459

Summary of Properties Acquired

The following table summarizes the property acquisitions during the nine months ended September 30, 2020 (dollars in thousands):

Property/Portfolio Name	Acquisition Date	Location	Property Type	Rentable Square Feet/Acres	Purchase Price
145 King of Prussia Road	February 27, 2020	Radnor, PA	Land	7.75 acres	$	11,250

Summary of Properties Sold

The following table summarizes the property dispositions during the nine months ended September 30, 2020 (dollars in thousands):

Property/Portfolio Name	Disposition Date	Location	Property Type	Rentable Square Feet/Acres	Sales Price		Gain/(Loss) on Sale (a)
52 East Swedesford Road	March 19, 2020	Malvern, PA	Office	131,077	$	18,000	$	2,336
Keith Valley	June 15, 2020	Horsham, PA	Land	14.0 Acres	$	4,000	$	201
One and Two Commerce Square (b)	July 21, 2020	Philadelphia, PA	Office	1,896,142	$	115,000	$	271,905

(a) Gain/(Loss) on Sale is net of closing and other transaction related costs.

(b) The Company sold a preferred equity interest representing a 30% equity interest in two office buildings located in Philadelphia, Pennsylvania, to an unrelated third party for $115.0 million (the "Commerce Square Venture Transaction"), which resulted in deconsolidation of the properties and formation of Brandywine Commerce I LP and Brandywine Commerce II LP (collectively, the "Commerce Square Venture"). The transaction valued the properties at $600.0 million. The Company recorded its investment at fair value and recognized a gain of $271.9 million in "Net gain on disposition of real estate" on the Consolidated Statements of Operations during the three months ended September 30, 2020. See Note 4, ''Investment in Unconsolidated Real Estate Ventures," for further information.

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Investment in Unconsolidated Real Estate Ventures (Tables)

9 Months Ended

Sep. 30, 2020

Equity Method Investments and Joint Ventures [Abstract]

Summary of Financial Position of Real Estate Ventures

The following is a summary of the financial position of the Real Estate Ventures in which the Company held interests as of September 30, 2020 and December 31, 2019 (in thousands):

	September 30, 2020		December 31, 2019
Net property	$	1,363,889	$	834,367
Other assets	442,834		342,002
Other liabilities	323,442		290,071
Debt, net	833,716		585,068
Equity (a)	649,565		301,230

(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.

Investment in Real Estate Ventures and Share of Real Estate Ventures' Income (Loss)

The following is a summary of results of operations of the Real Estate Ventures in which the Company held interests during the three and nine-month periods ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,						Nine Months Ended September 30,
	2020			2019			2020			2019
Revenue	$	43,109		$	32,726		$	105,554		$	101,148
Operating expenses	(23,870		)	(17,869		)	(59,838		)	(53,956		)
Interest expense, net	(6,175		)	(6,180		)	(16,320		)	(16,421		)
Depreciation and amortization	(22,345		)	(13,094		)	(47,493		)	(40,279		)
Gain on early extinguishment of debt	—			4,371			—			4,371
Net loss	$	(9,281	)	$	(46	)	$	(18,097	)	$	(5,137	)
Ownership interest %	Various			Various			Various			Various
Company's share of net income (loss)	$	(5,812	)	$	(1,945	)	$	(9,892	)	$	(4,765	)
Basis adjustments and other	24			(20		)	10			(49		)
Equity in loss of Real Estate Ventures	$	(5,788	)	$	(1,965	)	$	(9,882	)	$	(4,814	)

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Leases (Tables)

9 Months Ended

Sep. 30, 2020

Leases [Abstract]

Schedule of Lease Income

The table below sets forth the allocation of lease revenue between fixed contractual payments and variable lease payments for the three and nine months ended September 30, 2020 and 2019 (in thousands):

	Three Months Ended September 30,				Nine Months Ended September 30,
Lease Revenue	2020		2019		2020		2019
Fixed contractual payments	$	95,751	$	105,073	$	302,146	$	314,999
Variable lease payments	22,716		27,475		80,824		83,989
Total	$	118,467	$	132,548	$	382,970	$	398,988

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Intangible Assets and Liabilities (Tables)

9 Months Ended

Sep. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Intangible Assets and Liabilities

As of September 30, 2020 and December 31, 2019, the Company’s intangible assets/liabilities were comprised of the following (in thousands):

	September 30, 2020
	Total Cost		Accumulated Amortization			Intangible Assets, net
Intangible assets, net:
In-place lease value	$	89,504	$	(39,302	)	$	50,202
Tenant relationship value	2,610		(2,399		)	211
Above market leases acquired	1,140		(838		)	302
Total intangible assets, net	$	93,254	$	(42,539	)	$	50,715
	Total Cost		Accumulated Amortization			Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	29,189	$	(11,689	)	$	17,500

	December 31, 2019
	Total Cost		Accumulated Amortization			Intangible Assets, net
Intangible assets, net:
In-place lease value	$	167,357	$	(84,123	)	$	83,234
Tenant relationship value	5,268		(4,815		)	453
Above market leases acquired	4,956		(3,792		)	1,164
Total intangible assets, net	$	177,581	$	(92,730	)	$	84,851
	Total Cost		Accumulated Amortization			Intangible Liabilities, net
Intangible liabilities, net:
Below market leases acquired	$	44,757	$	(22,494	)	$	22,263

Summary of Amortization for Intangible Assets and Liabilities

As of September 30, 2020, the Company’s annual amortization for its intangible assets/liabilities, assuming no prospective early lease terminations, was as follows (dollars in thousands):

	Assets		Liabilities
2020 (three months remaining)	$	4,273	$	1,011
2021	14,789		3,601
2022	9,627		2,065
2023	7,564		1,651
2024	5,214		1,425
Thereafter	9,248		7,747
Total	$	50,715	$	17,500

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Debt Obligations (Tables)

9 Months Ended

Sep. 30, 2020

Debt Disclosure [Abstract]

Consolidated debt obligations

The following table sets forth information regarding the Company’s consolidated debt obligations outstanding as of September 30, 2020 and December 31, 2019 (in thousands):

	September 30, 2020			December 31, 2019			Effective Interest Rate	Maturity Date
MORTGAGE DEBT:
Two Logan Square (a)	$	79,781		$	81,103		3.98%	October 2020
Four Tower Bridge	9,107			9,291			4.50%	February 2021
One Commerce Square (b)	—			116,571			3.64%	April 2023
Two Commerce Square (b)	—			108,472			4.51%	April 2023
Principal balance outstanding	88,888			315,437
Plus: fair market value premium (discount), net	25			(1,383		)
Less: deferred financing costs	—			(242		)
Mortgage indebtedness	$	88,913		$	313,812
UNSECURED DEBT
Seven-Year Term Loan - Swapped to fixed	$	250,000		$	250,000		2.87%	October 2022
$350.0M 3.95% Guaranteed Notes due 2023	350,000			350,000			3.87%	February 2023
$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 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%	March 2035
Indenture IB (Preferred Trust I) - Swapped to fixed	25,774			25,774			3.30%	April 2035
Indenture II (Preferred Trust II)	25,774			25,774			LIBOR + 1.25%	July 2035
Principal balance outstanding	1,828,610			1,828,610
Plus: original issue premium (discount), net	10,626			12,090
Less: deferred financing costs	(8,638		)	(10,094		)
Total unsecured indebtedness	$	1,830,598		$	1,830,606
Total Debt Obligations	$	1,919,511		$	2,144,418

(a) On October 21, 2020, the Company acquired the mortgage on this property from the lender. See Note 15, "Subsequent Events," for further information.

(b)

The properties encumbered by these mortgages were deconsolidated as a result of the Commerce Square Venture Transaction.. See Note 3, ''Real Estate Investments," for further information.

Schedule of maturities of long-term debt

As of September 30, 2020, the Company’s aggregate scheduled principal payments of debt obligations are as follows (in thousands):

2020 (three months remaining)	$	79,845
2021	9,043
2022	250,000
2023	350,000
2024	350,000
Thereafter	878,610
Total principal payments	1,917,498
Net unamortized premiums/(discounts)	10,651
Net deferred financing costs	(8,638		)
Outstanding indebtedness	$	1,919,511

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Fair Value of Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2020

Fair Value Disclosures [Abstract]

Schedule of Financial Instruments With Fair Values Different From Their Carrying Amount

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

	September 30, 2020				December 31, 2019
	Carrying Amount (a)		Fair Value		Carrying Amount (a)		Fair Value
Unsecured notes payable	$	1,503,035	$	1,566,650	$	1,503,435	$	1,591,830
Variable rate debt	$	327,563	$	308,519	$	327,171	$	309,947
Mortgage notes payable	$	88,913	$	89,034	$	313,812	$	317,031
Notes receivable	$	44,430	$	47,415	$	44,430	$	43,322

(a) Net of deferred financing costs of $7.6 million and $8.7 million for unsecured notes payable, $1.0 million and $1.4 million for variable rate debt and $0.0 million and $0.2 million for mortgage notes payable as of September 30, 2020 and December 31, 2019.

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Derivative Financial Instruments (Tables)

9 Months Ended

Sep. 30, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

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

The following table summarizes the terms and fair values of the Company’s derivative financial instruments as of September 30, 2020 and December 31, 2019. The notional amounts provide an indication of the extent of the Company’s involvement in these instruments at that time, but do not represent exposure to credit, interest rate or market risks (amounts presented in thousands).

Hedge Product	Hedge Type	Designation		Notional Amount				Strike		Trade Date	Maturity Date	Fair value
				9/30/2020		12/31/2019						9/30/2020			12/31/2019
Liabilities
Swap	Interest Rate	Cash Flow	(a)	$	250,000	$	250,000	2.868	%	October 8, 2015	October 8, 2022	$	(7,597	)	$	(562	)
Swap	Interest Rate	Cash Flow	(a)	25,774		25,774		3.300	%	December 22, 2011	January 30, 2021	(234		)	(94		)
				$	275,774	$	275,774

(a)

Hedging unsecured variable rate debt.

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Beneficiaries Equity of the Parent Company (Tables)

9 Months Ended

Sep. 30, 2020

Equity [Abstract]

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 September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	276,133		$	276,133		$	6,820		$	6,820
Net income attributable to noncontrolling interests	(1,612		)	(1,612		)	(48		)	(48		)
Nonforfeitable dividends allocated to unvested restricted shareholders	(93		)	(93		)	(93		)	(93		)
Net income attributable to common shareholders	$	274,428		$	274,428		$	6,679		$	6,679
Denominator
Weighted-average shares outstanding	170,573,028			170,573,028			176,195,244			176,195,244
Contingent securities/Share based compensation	—			453,464			—			555,356
Weighted-average shares outstanding	170,573,028			171,026,492			176,195,244			176,750,600
Earnings per Common Share:
Net income attributable to common shareholders	$	1.61		$	1.60		$	0.04		$	0.04

	Nine Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	288,240		$	288,240		$	17,655		$	17,655
Net income attributable to noncontrolling interests	(1,701		)	(1,701		)	(155		)	(155		)
Nonforfeitable dividends allocated to unvested restricted shareholders	(317		)	(317		)	(305		)	(305		)
Net income attributable to common shareholders	$	286,222		$	286,222		$	17,195		$	17,195
Denominator
Weighted-average shares outstanding	172,380,410			172,380,410			176,066,507			176,066,507
Contingent securities/Share based compensation	—			355,026			—			551,219
Weighted-average shares outstanding	172,380,410			172,735,436			176,066,507			176,617,726
Earnings per Common Share:
Net income attributable to common shareholders	$	1.66		$	1.66		$	0.10		$	0.10

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Partners' Equity Of The Parent Company (Tables)

9 Months Ended

Sep. 30, 2020

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 September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	276,133		$	276,133		$	6,820		$	6,820
Net income attributable to noncontrolling interests	(1,612		)	(1,612		)	(48		)	(48		)
Nonforfeitable dividends allocated to unvested restricted shareholders	(93		)	(93		)	(93		)	(93		)
Net income attributable to common shareholders	$	274,428		$	274,428		$	6,679		$	6,679
Denominator
Weighted-average shares outstanding	170,573,028			170,573,028			176,195,244			176,195,244
Contingent securities/Share based compensation	—			453,464			—			555,356
Weighted-average shares outstanding	170,573,028			171,026,492			176,195,244			176,750,600
Earnings per Common Share:
Net income attributable to common shareholders	$	1.61		$	1.60		$	0.04		$	0.04

	Nine Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	288,240		$	288,240		$	17,655		$	17,655
Net income attributable to noncontrolling interests	(1,701		)	(1,701		)	(155		)	(155		)
Nonforfeitable dividends allocated to unvested restricted shareholders	(317		)	(317		)	(305		)	(305		)
Net income attributable to common shareholders	$	286,222		$	286,222		$	17,195		$	17,195
Denominator
Weighted-average shares outstanding	172,380,410			172,380,410			176,066,507			176,066,507
Contingent securities/Share based compensation	—			355,026			—			551,219
Weighted-average shares outstanding	172,380,410			172,735,436			176,066,507			176,617,726
Earnings per Common Share:
Net income attributable to common shareholders	$	1.66		$	1.66		$	0.10		$	0.10

BRANDYWINE OPERATING PARTNERSHIP, L.P.

Earnings Per Share (EPS), Basic and Diluted

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

	Three Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	276,133		$	276,133		$	6,820		$	6,820
Net (income) loss attributable to noncontrolling interests	2			2			(11		)	(11		)
Nonforfeitable dividends allocated to unvested restricted unitholders	(93		)	(93		)	(93		)	(93		)
Net income attributable to common unitholders	$	276,042		$	276,042		$	6,716		$	6,716
Denominator
Weighted-average units outstanding	171,554,662			171,554,662			177,176,870			177,176,870
Contingent securities/Share based compensation	—			453,464			—			555,356
Total weighted-average units outstanding	171,554,662			172,008,126			177,176,870			177,732,226
Earnings per Common Partnership Unit:
Net income attributable to common unitholders	1.61			1.60			0.04			0.04

	Nine Months Ended September 30,
	2020						2019
	Basic			Diluted			Basic			Diluted
Numerator
Net income	$	288,240		$	288,240		$	17,655		$	17,655
Net income attributable to noncontrolling interests	(20		)	(20		)	(58		)	(58		)
Nonforfeitable dividends allocated to unvested restricted unitholders	(317		)	(317		)	(305		)	(305		)
Net income attributable to common unitholders	$	287,903		$	287,903		$	17,292		$	17,292
Denominator
Weighted-average units outstanding	173,362,044			173,362,044			177,048,621			177,048,621
Contingent securities/Share based compensation	—			355,026			—			551,219
Total weighted-average units outstanding	173,362,044			173,717,070			177,048,621			177,599,840
Earnings per Common Partnership Unit:
Net income attributable to common unitholders	$	1.66		$	1.66		$	0.10		$	0.10

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Segment Information (Tables)

9 Months Ended

Sep. 30, 2020

Segment Reporting [Abstract]

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

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

Real estate investments, at cost:
	September 30, 2020		December 31, 2019
Philadelphia CBD (a)	$	1,414,041	$	1,726,299
Pennsylvania Suburbs	1,000,214		1,003,890
Austin, Texas	726,295		721,255
Metropolitan Washington, D.C.	488,139		468,035
Other	87,076		86,980
Operating Properties	$	3,715,765	$	4,006,459
Right of use asset - operating leases, net	$	21,145	$	21,656
Corporate
Construction-in-progress	$	186,853	$	180,718
Land held for development (b)	$	115,474	$	96,124
Prepaid leasehold interests in land held for development, net (c)	$	39,287	$	39,592

(a) Decrease primarily due to the Commerce Square Venture Transaction. See Note 3, ''Real Estate Investments," for further information.

(b) Does not include 35.2 acres of land classified as held for sale as of September 30, 2020 and December 31, 2019.

(c) Includes leasehold interests in prepaid 99-year ground leases at 3025 and 3001-3003 JFK Boulevard, in Philadelphia, Pennsylvania as of September 30, 2020 and December 31, 2019.

Net operating income:

	Three Months Ended September 30,
	2020								2019
	Total revenue		Operating expenses (a)			Net operating income (loss)			Total revenue		Operating expenses (a)			Net operating income (loss)
Philadelphia CBD	$	52,640	$	(18,522	)	$	34,118		$	66,105	$	(24,773	)	$	41,332
Pennsylvania Suburbs	34,649		(11,141		)	23,508			34,818		(11,667		)	23,151
Austin, Texas	25,328		(9,944		)	15,384			26,280		(9,302		)	16,978
Metropolitan Washington, D.C.	9,675		(5,236		)	4,439			13,179		(5,999		)	7,180
Other	3,188		(2,374		)	814			3,706		(2,691		)	1,015
Corporate	626		(1,782		)	(1,156		)	1,243		(1,642		)	(399		)
Operating properties	$	126,106	$	(48,999	)	$	77,107		$	145,331	$	(56,074	)	$	89,257

	Nine Months Ended September 30,
	2020								2019
	Total revenue		Operating expenses (a)			Net operating income (loss)			Total revenue		Operating expenses (a)			Net operating income (loss)
Philadelphia CBD	$	181,203	$	(65,615	)	$	115,588		$	196,859	$	(75,311	)	121,548
Pennsylvania Suburbs	106,569		(34,980		)	71,589			104,744		(36,466		)	68,278
Austin, Texas	76,921		(30,032		)	46,889			77,234		(28,182		)	49,052
Metropolitan Washington, D.C.	30,520		(15,678		)	14,842			40,372		(18,542		)	21,830
Other	10,221		(7,434		)	2,787			10,352		(7,226		)	3,126
Corporate	2,597		(4,652		)	(2,055		)	3,817		(4,969		)	(1,152		)
Operating properties	$	408,031	$	(158,391	)	$	249,640		$	433,378	$	(170,696	)	$	262,682

(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 September 30,						Nine Months Ended September 30,
	September 30, 2020			December 31, 2019			2020			2019			2020			2019
Philadelphia CBD (a)	$	277,161		$	17,524		$	(2,737	)	$	55		$	(2,575	)	$	217
Metropolitan Washington, D.C.	100,325			102,840			(1,367		)	(528		)	(2,463		)	(963		)
MAP Venture (b)	(9,715		)	(70		)	(1,684		)	(1,602		)	(4,844		)	(4,414		)
Other	—			—			—			110			—			346
Total	$	367,771		$	120,294		$	(5,788	)	$	(1,965	)	$	(9,882	)	$	(4,814	)

(a) Increase primarily due to the Commerce Square Venture Transaction. See Note 3, ''Real Estate Investments," for further information.

(b)

Included in "Other liabilities" on the consolidated balance sheets.

Reconciliation of Consolidated Net Income to Consolidated NOI

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

	Three Months Ended September 30,					Nine Months Ended September 30,
	2020			2019		2020		2019
Net income	$	276,133		$	6,820	$	288,240	$	17,655
Plus:
Interest expense	16,310			20,400		56,510		61,273
Interest expense - amortization of deferred financing costs	715			694		2,195		2,026
Depreciation and amortization	43,533			55,627		145,314		158,738
General and administrative expenses	7,069			6,974		23,973		25,217
Equity in loss of Real Estate Ventures	5,788			1,965		9,882		4,814
Less:
Interest income	467			558		1,487		1,636
Income tax (provision) benefit	(2		)	—		224		(46		)
Net gain on disposition of real estate	271,901			356		274,487		356
Net gain on sale of undepreciated real estate	—			250		201		1,501
Net gain on real estate venture transactions	75			2,059		75		3,594
Consolidated net operating income	$	77,107		$	89,257	$	249,640	$	262,682

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Organization of The Parent Company and The Operating Partnership - Textual (Details)	9 Months Ended
	Sep. 30, 2020 a ft² parcel property
Organization of The Parent Company and The Operating Partnership [Line Items]
Number of properties | property	92
Net rentable area (in square feet)	14,691,346
Parent Company
Organization of The Parent Company and The Operating Partnership [Line Items]
Areas of land held for development (in acres) | a	228.5
Area of land held for sale (in acres) | a	35.2
Area of additional undeveloped parcels of land with option to purchase (in acres) | a	55.5
Total potential development capacity (in square feet)	14,200,000
Parent Company | Land Parcel One
Organization of The Parent Company and The Operating Partnership [Line Items]
Lease agreement term	99 years
Parent Company | Land Parcel Two
Organization of The Parent Company and The Operating Partnership [Line Items]
Lease agreement term	99 years
Parent Company | Held-for-sale
Organization of The Parent Company and The Operating Partnership [Line Items]
Total potential development capacity (in square feet)	200,000
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	1.8
Number of parcels of land | parcel	2
Wholly-owned Management Company Subsidiaries
Organization of The Parent Company and The Operating Partnership [Line Items]
Net rentable area (in square feet)	24,400,000
Wholly-owned Management Company Subsidiaries | Wholly Owned Properties
Organization of The Parent Company and The Operating Partnership [Line Items]
Net rentable area (in square feet)	14,700,000
Wholly-owned Management Company Subsidiaries | Partially Owned Properties
Organization of The Parent Company and The Operating Partnership [Line Items]
Net rentable area (in square feet)	9,700,000
Brandywine Operating Partnership LP
Organization of The Parent Company and The Operating Partnership [Line Items]
Ownership in the operating partnership	99.40%
Unconsolidated Real Estate Ventures | Unconsolidated Properties
Organization of The Parent Company and The Operating Partnership [Line Items]
Number of properties | property	8

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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)	Sep. 30, 2020 ft² property
Real Estate Properties [Line Items]
Number of properties | property	92
Net rentable area (in square feet) | ft²	14,691,346
Office properties
Real Estate Properties [Line Items]
Number of properties | property	84
Net rentable area (in square feet) | ft²	13,641,289
Mixed-use properties
Real Estate Properties [Line Items]
Number of properties | property	5
Net rentable area (in square feet) | ft²	780,184
Core Properties
Real Estate Properties [Line Items]
Number of properties | property	89
Net rentable area (in square feet) | ft²	14,421,473
Development property
Real Estate Properties [Line Items]
Number of properties | property	1
Net rentable area (in square feet) | ft²	205,803
Redevelopment properties
Real Estate Properties [Line Items]
Number of properties | property	2
Net rentable area (in square feet) | ft²	64,070

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Real Estate Investments - Gross Carrying Value of Operating Properties (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Real Estate [Abstract]
Land	$ 437,617	$ 489,702
Building and improvements	2,851,185	3,049,395
Tenant improvements	426,963	467,362
Total	$ 3,715,765	$ 4,006,459

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Real Estate Investments - Summary of Properties Acquired (Details) $ in Thousands		9 Months Ended
	Feb. 27, 2020 USD ($) a	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Real Estate [Line Items]
Purchase price		$ 11,432	$ 0
Land | 145 King of Prussia Road
Real Estate [Line Items]
Area of land (in acres) | a	7.75
Purchase price	$ 11,250

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Real Estate Investments - Summary of Properties Sold (Details) $ in Thousands				3 Months Ended		9 Months Ended
	Jul. 21, 2020 USD ($) ft²	Jun. 15, 2020 USD ($) a	Mar. 19, 2020 USD ($) ft²	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($)	Sep. 30, 2019 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from the sale of properties						$ 122,055	$ 41,546
Gain (loss) on sale				$ 271,901	$ 356	$ 274,487	$ 356
One and Two Commerce Square
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of ownership interest percentage	30.00%
Total sale price for property sold	$ 115,000
Value of properties sold	$ 600,000
Gain on sale				$ 271,900
Office properties | 52 East Swedesford Road
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rentable area (in square feet) | ft²			131,077
Proceeds from the sale of properties			$ 18,000
Gain (loss) on sale			$ 2,336
Office properties | One and Two Commerce Square
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Rentable area (in square feet) | ft²	1,896,142
Proceeds from the sale of properties	$ 115,000
Gain (loss) on sale	$ 271,905
Land | Keith Valley
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of land (in acres) | a		14.0
Proceeds from the sale of properties		$ 4,000
Gain (loss) on sale		$ 201

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Real Estate Investments - Textual (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($) a parcel	Dec. 31, 2019 USD ($) a
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale, net | $	$ 7,349	$ 7,349
Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of land (in acres) | a	35.2	35.2
Other - Land | Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale, net | $	$ 7,300
Other - Land | Held-for-sale | Other
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of parcels of land | parcel	2
Area of land (in acres) | a	35.2

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Investment in Unconsolidated Real Estate Ventures - Textual (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020 USD ($) a ft² investment property apartment	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) a ft² investment property apartment	Sep. 30, 2019 USD ($)	Jul. 21, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)
Schedule of Equity Method Investments [Line Items]
Number of properties | property	92		92
Investment in Real Estate Ventures	$ 377,486		$ 377,486			$ 120,294
Accounts receivable	20,433		20,433			16,363
Debt, net	$ 1,919,511		$ 1,919,511			2,144,418
Minimum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	15.00%		15.00%
Maximum
Schedule of Equity Method Investments [Line Items]
Ownership percentage	70.00%		70.00%
Real Estate Venture
Schedule of Equity Method Investments [Line Items]
Accounts receivable	$ 1,400		$ 1,400			800
Real Estate Venture | Management Fees
Schedule of Equity Method Investments [Line Items]
Service and other revenue	1,300	$ 1,000	3,200	$ 3,200
Real Estate Venture | Leasing Commission Income
Schedule of Equity Method Investments [Line Items]
Service and other revenue	200	$ 300	900	$ 800
Unconsolidated Real Estate Ventures
Schedule of Equity Method Investments [Line Items]
Investment in Real Estate Ventures	$ 367,800		$ 367,800
Unconsolidated Real Estate Ventures | Office properties
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures | investment	4		4
Rentable area (in square feet) | ft²	7,300,000		7,300,000
Unconsolidated Real Estate Ventures | Unconsolidated Properties
Schedule of Equity Method Investments [Line Items]
Number of properties | property	8		8
Number of properties with negative investment balances | property	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 | investment	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 | investment	1		1
Area of land (in acres) | a	1.3		1.3
Unconsolidated Real Estate Ventures | Residential Tower
Schedule of Equity Method Investments [Line Items]
Number of unconsolidated investments in Real Estate Ventures | investment	1		1
Number of apartment units (in units) | apartment	321		321
One and Two Commerce Square
Schedule of Equity Method Investments [Line Items]
Ownership percentage	70.00%		70.00%
Secured Debt
Schedule of Equity Method Investments [Line Items]
Debt, net	$ 88,913		$ 88,913			$ 313,812
Secured Debt | Philadelphia - Office
Schedule of Equity Method Investments [Line Items]
Debt, net					$ 222,100
Preferred Equity Securities | One and Two Commerce Square
Schedule of Equity Method Investments [Line Items]
Ownership percentage	32.00%		32.00%
Common Equity Securities | One and Two Commerce Square
Schedule of Equity Method Investments [Line Items]
Ownership percentage	38.00%		38.00%
Other Liabilities | Unconsolidated Real Estate Ventures
Schedule of Equity Method Investments [Line Items]
Investment in Real Estate Ventures	$ (9,700)		$ (9,700)
One and Two Commerce Square
Schedule of Equity Method Investments [Line Items]
Sale of ownership interest percentage					30.00%
One and Two Commerce Square | Office properties
Schedule of Equity Method Investments [Line Items]
Rentable area (in square feet) | ft²					1,896,142

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Investment in Unconsolidated Real Estate Ventures - Summary of Financial Position of Real Estate Ventures (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Schedule of Equity Method Investments [Line Items]
Net property	$ 3,097,860			$ 3,371,231
Other assets	124,408			115,678
Other liabilities	40,537			15,985
Debt, net	1,919,511			2,144,418
Equity	1,815,782	$ 1,570,849	$ 1,603,814	1,688,303	$ 1,702,437	$ 1,729,665	$ 1,760,463	$ 1,811,028
Investment In Nonconsolidated Real Estate
Schedule of Equity Method Investments [Line Items]
Net property	1,363,889			834,367
Other assets	442,834			342,002
Other liabilities	323,442			290,071
Debt, net	833,716			585,068
Equity	$ 649,565			$ 301,230

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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						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Schedule of Equity Method Investments [Line Items]
Revenue	$ 126,106			$ 145,331			$ 408,031	$ 433,378
Operating expenses	(99,601)			(118,675)			(327,678)	(354,651)
Interest expense	(16,310)			(20,400)			(56,510)	(61,273)
Depreciation and amortization	(43,533)			(55,627)			(145,314)	(158,738)
Net income	276,133	$ 4,020	$ 8,087	6,820	$ 6,252	$ 4,583	288,240	17,655
Equity in loss of Real Estate Ventures	(5,788)			(1,965)			(9,882)	(4,814)
Investment In Nonconsolidated Real Estate
Schedule of Equity Method Investments [Line Items]
Revenue	43,109			32,726			105,554	101,148
Operating expenses	(23,870)			(17,869)			(59,838)	(53,956)
Interest expense	(6,175)			(6,180)			(16,320)	(16,421)
Depreciation and amortization	(22,345)			(13,094)			(47,493)	(40,279)
Gain on early extinguishment of debt	0			4,371			0	4,371
Net income	(9,281)			(46)			(18,097)	(5,137)
Company's share of net loss	(5,812)			(1,945)			(9,892)	(4,765)
Basis adjustments and other	24			(20)			10	(49)
Equity in loss of Real Estate Ventures	$ (5,788)			$ (1,965)			$ (9,882)	$ (4,814)

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Leases (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Leases [Abstract]
Fixed contractual payments	$ 95,751	$ 105,073	$ 302,146	$ 314,999
Variable lease payments	22,716	27,475	80,824	83,989
Total	$ 118,467	$ 132,548	$ 382,970	$ 398,988

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Intangible Assets and Liabilities - Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Intangible Assets [Line Items]
Intangible assets, total cost	$ 93,254	$ 177,581
Intangible assets, accumulated amortization	(42,539)	(92,730)
Intangible assets, net	50,715	84,851
Intangible liabilities, net		44,757
Acquired lease intangibles, accumulated amortization		(22,494)
Acquired lease intangibles, net	17,500	22,263
In-place lease value
Intangible Assets [Line Items]
Intangible assets, total cost	89,504	167,357
Intangible assets, accumulated amortization	(39,302)	(84,123)
Intangible assets, net	50,202	83,234
Tenant relationship value
Intangible Assets [Line Items]
Intangible assets, total cost	2,610	5,268
Intangible assets, accumulated amortization	(2,399)	(4,815)
Intangible assets, net	211	453
Above market leases acquired
Intangible Assets [Line Items]
Intangible assets, total cost	1,140	4,956
Intangible assets, accumulated amortization	(838)	(3,792)
Intangible assets, net	302	$ 1,164
Below market leases acquired
Intangible Assets [Line Items]
Intangible liabilities, net	29,189
Acquired lease intangibles, accumulated amortization	(11,689)
Acquired lease intangibles, net	$ 17,500

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Intangible Assets and Liabilities - Annual Amortization of Intangible Assets, Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
2020 (three months remaining)	$ 4,273
2021	14,789
2022	9,627
2023	7,564
2024	5,214
Thereafter	9,248
Intangible assets, net	50,715	$ 84,851
Liabilities
2020 (three months remaining)	1,011
2021	3,601
2022	2,065
2023	1,651
2024	1,425
Thereafter	7,747
Acquired lease intangibles, net	$ 17,500	$ 22,263

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Debt Obligations - Consolidated Debt Obligations Outstanding (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Consolidated debt obligations
Plus: premiums/(discounts), net	$ 10,651
Less: deferred financing costs	(8,638)
Outstanding indebtedness	1,919,511	$ 2,144,418
Secured Debt
Consolidated debt obligations
Principal balance outstanding	88,888	315,437
Plus: premiums/(discounts), net	25	(1,383)
Less: deferred financing costs	0	(242)
Outstanding indebtedness	88,913	313,812
Secured Debt | Two Logan Square
Consolidated debt obligations
Principal balance outstanding	$ 79,781	81,103
Effective interest rate	3.98%
Secured Debt | Four Tower Bridge
Consolidated debt obligations
Principal balance outstanding	$ 9,107	9,291
Effective interest rate	4.50%
Secured Debt | One Commerce Square
Consolidated debt obligations
Principal balance outstanding	$ 0	116,571
Effective interest rate	3.64%
Secured Debt | Two Commerce Square
Consolidated debt obligations
Principal balance outstanding	$ 0	108,472
Effective interest rate	4.51%
Unsecured Debt
Consolidated debt obligations
Principal balance outstanding	$ 1,828,610	1,828,610
Plus: premiums/(discounts), net	10,626	12,090
Less: deferred financing costs	(8,638)	(10,094)
Outstanding indebtedness	1,830,598	1,830,606
Unsecured Debt | Seven-Year Term Loan - Swapped to fixed
Consolidated debt obligations
Principal balance outstanding	$ 250,000	250,000
Effective interest rate	2.87%
Unsecured Debt | $350.0M 3.95% Guaranteed Notes due 2023
Consolidated debt obligations
Principal balance outstanding	$ 350,000	350,000
Effective interest rate	3.87%
Unsecured Debt | $350.0M 4.10% Guaranteed Notes due 2024
Consolidated debt obligations
Principal balance outstanding	$ 350,000	350,000
Effective interest rate	3.78%
Unsecured Debt | $450.0M 3.95% Guaranteed Notes due 2027
Consolidated debt obligations
Principal balance outstanding	$ 450,000	450,000
Effective interest rate	4.03%
Unsecured Debt | $350.0M 4.55% Guaranteed Notes due 2029
Consolidated debt obligations
Principal balance outstanding	$ 350,000	350,000
Effective interest rate	4.30%
Unsecured Debt | Indenture IA (Preferred Trust I)
Consolidated debt obligations
Principal balance outstanding	$ 27,062	27,062
Unsecured Debt | Indenture IA (Preferred Trust I) | LIBOR
Consolidated debt obligations
Spread on variable rate	1.25%
Unsecured Debt | Indenture IB (Preferred Trust I) - Swapped to fixed
Consolidated debt obligations
Principal balance outstanding	$ 25,774	25,774
Effective interest rate	3.30%
Unsecured Debt | Indenture II (Preferred Trust II)
Consolidated debt obligations
Principal balance outstanding	$ 25,774	$ 25,774
Unsecured Debt | Indenture II (Preferred Trust II) | LIBOR
Consolidated debt obligations
Spread on variable rate	1.25%

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Debt Obligations - Textual (Details) - USD ($)	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 600,000,000.0
Weighted average interest rate	1.60%
LIBOR | Revolving Credit Facility
Debt Instrument [Line Items]
Spread on variable rate	1.10%
Unsecured Debt
Debt Instrument [Line Items]
Principal balance outstanding	$ 1,828,610,000	$ 1,828,610,000
Unsecured Debt | $600 million Unsecured Credit Facility
Debt Instrument [Line Items]
Principal balance outstanding	$ 0

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Debt Obligations - Aggregate Scheduled Principal Payments of Debt Obligation, Excluding Amortization of Discounts and Premiums (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
2020 (three months remaining)	$ 79,845
2021	9,043
2022	250,000
2023	350,000
2024	350,000
Thereafter	878,610
Total principal payments	1,917,498
Net unamortized premiums/(discounts)	10,651
Net deferred financing costs	(8,638)
Outstanding indebtedness	$ 1,919,511	$ 2,144,418

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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	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage notes payable	$ 88,913	$ 313,812
Deferred financing costs, net	8,638
Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Deferred financing costs, net	8,638	10,094
Carrying Amount
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Notes receivable	44,430	44,430
Carrying Amount | Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Unsecured notes payable	1,503,035	1,503,435
Deferred financing costs, net	7,600	8,700
Carrying Amount | Variable rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Variable rate debt	327,563	327,171
Deferred financing costs, net	1,000	1,400
Carrying Amount | Mortgage notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage notes payable	88,913	313,812
Deferred financing costs, net	0	200
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Note receivable, fair value	47,415	43,322
Fair Value | Unsecured notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	1,566,650	1,591,830
Fair Value | Variable rate debt
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	308,519	309,947
Fair Value | Mortgage notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Debt instrument, fair value	$ 89,034	$ 317,031

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Fair Value of Financial Instruments - Textual (Details) - Brandywine 1919 Ventures $ in Millions	Jun. 26, 2018 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loan	$ 44.4
Equity method investment, ownership percentage	50.00%
Other Assets
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Mortgage loan	$ 44.4

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Derivative Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative, notional amount	$ 275,774	$ 275,774
2.868% Interest Rate Swap Maturing October 8, 2022 | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivative liability, notional amount	$ 250,000	250,000
Derivative, fixed interest rate	2.868%
Derivative liability, fair value, gross liability	$ (7,597)	(562)
3.300% Interest Rate Swap Maturing January 30, 2021 | Cash Flow Hedging
Derivatives, Fair Value [Line Items]
Derivative liability, notional amount	$ 25,774	25,774
Derivative, fixed interest rate	3.30%
Derivative liability, fair value, gross liability	$ (234)	$ (94)

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Limited Partners' Non-Controlling Interests in the Parent Company (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Noncontrolling Interest [Abstract]
Aggregate amount related to non-controlling interests classified within equity	$ 10.5	$ 9.3
Settlement value of non controlling interest in operating partnership	$ 10.2	$ 15.5

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Beneficiaries Equity of the Parent Company - 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						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator
Net income	$ 276,133	$ 4,020	$ 8,087	$ 6,820	$ 6,252	$ 4,583	$ 288,240	$ 17,655
Net income attributable to noncontrolling interests, Basic	(1,612)			(48)			(1,701)	(155)
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic	(93)			(93)			(317)	(305)
Net income attributable to noncontrolling interests, Diluted	(1,612)			(48)			(1,701)	(155)
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted	(93)			(93)			(317)	(305)
Net income attributable to Common Shareholders of Brandywine Realty Trust	274,428			6,679			286,222	17,195
Net income attributable to common shareholders, Diluted	$ 274,428			$ 6,679			$ 286,222	$ 17,195
Denominator
Basic weighted average shares outstanding (in shares)	170,573,028			176,195,244			172,380,410	176,066,507
Contingent securities/Share based compensation (in shares)	453,464			555,356			355,026	551,219
Diluted weighted average shares outstanding (in shares)	171,026,492			176,750,600			172,735,436	176,617,726
Earnings per Common Share:
Net income attributable to common shareholders, Basic (USD per share)	$ 1.61			$ 0.04			$ 1.66	$ 0.10
Net income attributable to common shareholders, Diluted (USD per share)	$ 1.60			$ 0.04			$ 1.66	$ 0.10

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Beneficiaries Equity of the Parent Company - Textual (Details) - USD ($)		3 Months Ended			9 Months Ended
	Sep. 15, 2020	Jun. 30, 2020	Mar. 31, 2020	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019	Jan. 03, 2019
Class of Stock [Line Items]
Dividends, common stock	$ 32,700,000
Shares repurchased and retired (in shares)					6,248,483	1,337,169
Share price (in dollars per share)					$ 9.60	$ 12.92
Value of stock repurchased and retired		$ 6,141,000	$ 53,858,000	$ 17,281,000	$ 60,000,000.0	$ 17,300,000
Maximum
Class of Stock [Line Items]
Share repurchase, authorized amount							$ 150,000,000.0
Dividend declared
Class of Stock [Line Items]
Dividends payable (in dollars per share)	$ 0.19
Redeemable Common Limited Partnership Units
Class of Stock [Line Items]
Redeemable common limited partnership units (in shares)					981,634	981,626

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Partners' Equity Of The Parent Company - Number of Units and Net Income Used to Calculate Basic and Diluted Earnings Per Common Partnership Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Numerator
Net income	$ 276,133	$ 4,020	$ 8,087	$ 6,820	$ 6,252	$ 4,583	$ 288,240	$ 17,655
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic	(93)			(93)			(317)	(305)
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted	$ (93)			$ (93)			$ (317)	$ (305)
Denominator
Basic weighted average shares outstanding (in shares)	170,573,028			176,195,244			172,380,410	176,066,507
Contingent securities/Share based compensation (in shares)	453,464			555,356			355,026	551,219
Diluted weighted average shares outstanding (in shares)	171,026,492			176,750,600			172,735,436	176,617,726
Earnings per Common Partnership Unit:
Net income attributable to common shareholders, Basic (USD per share)	$ 1.61			$ 0.04			$ 1.66	$ 0.10
Net income attributable to common shareholders, Diluted (USD per share)	$ 1.60			$ 0.04			$ 1.66	$ 0.10
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Numerator
Net income	$ 276,133	$ 4,020	$ 8,087	$ 6,820	$ 6,252	$ 4,583	$ 288,240	$ 17,655
Net income attributable to noncontrolling interests	2			(11)			(20)	(58)
Nonforfeitable dividends allocated to unvested restricted shareholders, Basic	(93)			(93)			(317)	(305)
Nonforfeitable dividends allocated to unvested restricted shareholders, Diluted	(93)			(93)			(317)	(305)
Net income attributable to common unitholders, Basic	276,042			6,716			287,903	17,292
Net income attributable to common unitholders, Diluted	$ 276,042			$ 6,716			$ 287,903	$ 17,292
Denominator
Basic weighted average shares outstanding (in shares)	171,554,662			177,176,870			173,362,044	177,048,621
Contingent securities/Share based compensation (in shares)	453,464			555,356			355,026	551,219
Diluted weighted average shares outstanding (in shares)	172,008,126			177,732,226			173,717,070	177,599,840
Earnings per Common Partnership Unit:
Net income attributable to common shareholders, Basic (USD per share)	$ 1.61			$ 0.04			$ 1.66	$ 0.10
Net income attributable to common shareholders, Diluted (USD per share)	$ 1.60			$ 0.04			$ 1.66	$ 0.10

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Partners' Equity Of The Parent Company - Textual (Details) $ / shares in Units, $ in Thousands		3 Months Ended			9 Months Ended
	Sep. 15, 2020 USD ($) $ / shares	Jun. 30, 2020 USD ($)	Mar. 31, 2020 USD ($)	Mar. 31, 2019 USD ($)	Sep. 30, 2020 USD ($) $ / shares shares	Sep. 30, 2019 USD ($) $ / shares shares
Earnings Per Common Partnership Unit [Line Items]
Dividends, common stock | $	$ 32,700
Shares repurchased and retired (in shares) | shares					6,248,483	1,337,169
Share price (in dollars per share) | $ / shares					$ 9.60	$ 12.92
Value of stock repurchased and retired | $		$ 6,141	$ 53,858	$ 17,281	$ 60,000	$ 17,300
Dividend declared
Earnings Per Common Partnership Unit [Line Items]
Dividends payable (in dollars per share) | $ / shares	$ 0.19
BRANDYWINE OPERATING PARTNERSHIP, L.P.
Earnings Per Common Partnership Unit [Line Items]
Dividends, common stock | $	$ 32,700
Repurchase program, ratio of mirror unit of operating partnership retired for each common share repurchased					1
BRANDYWINE OPERATING PARTNERSHIP, L.P. | Dividend declared
Earnings Per Common Partnership Unit [Line Items]
Dividends payable (in dollars per share) | $ / shares	$ 0.19

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Segment Information (Textual) (Details)	9 Months Ended
	Sep. 30, 2020 segment
Segment Reporting [Abstract]
Number of reportable segments	5

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Segment Information - Real Estate Investments, at Cost of Company's Reportable Segments (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Operating properties	$ 3,715,765	$ 4,006,459
Operating Properties	3,715,765	4,006,459
Right of use asset - operating leases, net	21,145	21,656
Construction-in-progress	186,853	180,718
Land held for development	115,474	96,124
Prepaid leasehold interests in land held for development, net	39,287	39,592
Philadelphia CBD
Segment Reporting Information [Line Items]
Operating properties	1,414,041	1,726,299
Pennsylvania Suburbs
Segment Reporting Information [Line Items]
Operating properties	1,000,214	1,003,890
Austin, Texas
Segment Reporting Information [Line Items]
Operating properties	726,295	721,255
Metropolitan Washington, D.C.
Segment Reporting Information [Line Items]
Operating properties	488,139	468,035
Other
Segment Reporting Information [Line Items]
Operating properties	$ 87,076	$ 86,980

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Segment Information - Real Estate Investments, at Cost of Company's Reportable Segments (Additional Information) (Details) - a	9 Months Ended	12 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
3001-3003 and 3025 JFK Boulevard
Segment Reporting Information [Line Items]
Lease agreement term	99 years	99 years
Held-for-sale
Segment Reporting Information [Line Items]
Area of land (in acres)	35.2	35.2

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Segment Information - Net Operating Income of Company's Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting Information [Line Items]
Total revenue	$ 126,106	$ 145,331	$ 408,031	$ 433,378
Operating expenses	(48,999)	(56,074)	(158,391)	(170,696)
Net operating income (loss)	77,107	89,257	249,640	262,682
Operating Segments | Philadelphia CBD
Segment Reporting Information [Line Items]
Total revenue	52,640	66,105	181,203	196,859
Operating expenses	(18,522)	(24,773)	(65,615)	(75,311)
Net operating income (loss)	34,118	41,332	115,588	121,548
Operating Segments | Pennsylvania Suburbs
Segment Reporting Information [Line Items]
Total revenue	34,649	34,818	106,569	104,744
Operating expenses	(11,141)	(11,667)	(34,980)	(36,466)
Net operating income (loss)	23,508	23,151	71,589	68,278
Operating Segments | Austin, Texas
Segment Reporting Information [Line Items]
Total revenue	25,328	26,280	76,921	77,234
Operating expenses	(9,944)	(9,302)	(30,032)	(28,182)
Net operating income (loss)	15,384	16,978	46,889	49,052
Operating Segments | Metropolitan Washington, D.C.
Segment Reporting Information [Line Items]
Total revenue	9,675	13,179	30,520	40,372
Operating expenses	(5,236)	(5,999)	(15,678)	(18,542)
Net operating income (loss)	4,439	7,180	14,842	21,830
Operating Segments | Other
Segment Reporting Information [Line Items]
Total revenue	3,188	3,706	10,221	10,352
Operating expenses	(2,374)	(2,691)	(7,434)	(7,226)
Net operating income (loss)	814	1,015	2,787	3,126
Corporate
Segment Reporting Information [Line Items]
Total revenue	626	1,243	2,597	3,817
Operating expenses	(1,782)	(1,642)	(4,652)	(4,969)
Net operating income (loss)	$ (1,156)	$ (399)	$ (2,055)	$ (1,152)

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Segment Information - Unconsolidated Real Estate Ventures of Company's Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Investment in real estate ventures	$ 367,771		$ 367,771		$ 120,294
Equity in loss of real estate ventures	(5,788)	$ (1,965)	(9,882)	$ (4,814)
Philadelphia CBD
Segment Reporting Information [Line Items]
Investment in real estate ventures	277,161		277,161		17,524
Equity in loss of real estate ventures	(2,737)	55	(2,575)	217
Metropolitan Washington, D.C.
Segment Reporting Information [Line Items]
Investment in real estate ventures	100,325		100,325		102,840
Equity in loss of real estate ventures	(1,367)	(528)	(2,463)	(963)
MAP Venture
Segment Reporting Information [Line Items]
Investment in real estate ventures	(9,715)		(9,715)		(70)
Equity in loss of real estate ventures	(1,684)	(1,602)	(4,844)	(4,414)
Other
Segment Reporting Information [Line Items]
Investment in real estate ventures	0		0		$ 0
Equity in loss of real estate ventures	$ 0	$ 110	$ 0	$ 346

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Segment Information - Reconciliation of Consolidated Net Income to Consolidated NOI (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Segment Reporting [Abstract]
Net income	$ 276,133	$ 4,020	$ 8,087	$ 6,820	$ 6,252	$ 4,583	$ 288,240	$ 17,655
Plus:
Interest expense	16,310			20,400			56,510	61,273
Interest expense - amortization of deferred financing costs	715			694			2,195	2,026
Depreciation and amortization	43,533			55,627			145,314	158,738
General and administrative expenses	7,069			6,974			23,973	25,217
Equity in loss of Real Estate Ventures	5,788			1,965			9,882	4,814
Less:
Interest income	467			558			1,487	1,636
Income tax (provision) benefit	(2)			0			224	(46)
Net gain on disposition of real estate	271,901			356			274,487	356
Net gain on sale of undepreciated real estate	0			250			201	1,501
Net gain on real estate venture transactions	75			2,059			75	3,594
Consolidated net operating income	$ 77,107			$ 89,257			$ 249,640	$ 262,682

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Commitments and Contingencies (Details) ft² in Thousands	9 Months Ended
	Sep. 30, 2020 USD ($) ft²	Dec. 31, 2019 USD ($)
Property Subject to or Available for Operating Lease [Line Items]
Debt, net	$ 1,919,511,000	$ 2,144,418,000
4040 Wilson Venture
Property Subject to or Available for Operating Lease [Line Items]
Debt, net	150,000,000.0
Guarantees, maximum exposure amount	41,300,000
Unconsolidated Real Estate Ventures
Property Subject to or Available for Operating Lease [Line Items]
Real estate ventures aggregate indebtedness	$ 842,200,000
Radnor PA Property
Property Subject to or Available for Operating Lease [Line Items]
Rentable area (in square feet) | ft²	170
Payments to acquire buildings	$ 20,300,000
Payments for deposits on real estate acquisitions	1,000,000.0
One and Two Commerce Square | Preferred Equity Investment
Property Subject to or Available for Operating Lease [Line Items]
Other commitments	20,000,000.0
Drexel Square
Property Subject to or Available for Operating Lease [Line Items]
Other commitments	7,700,000
Estimated potential additional contribution obligation	2,600,000
Mortgage Lenders
Property Subject to or Available for Operating Lease [Line Items]
Associated letter of credit	$ 0

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Subsequent Events (Details) $ in Millions	Oct. 21, 2020 USD ($)
Secured Debt | Two Logan Square | Subsequent Event
Subsequent Event [Line Items]
Acquisition of mortgage loan	$ 79.8