Exhibit 99.1

Brandywine Realty Trust Announces First Quarter Results

And Narrows 2018 Guidance

Philadelphia, PA, April 19, 2018 — Brandywine Realty Trust (NYSE:BDN) today reported its financial and operating results for the three months ended March 31, 2018.

Management Comments

“Our 2018 business plan is off to an excellent start,” stated Gerard H. Sweeney, President and Chief Executive Officer for Brandywine Realty Trust.  “We are now 83% complete on our 2018 revenue target.  We generated strong quarterly operating metrics including a 10.5% increase in quarterly GAAP market-to-market rents.  In addition to our strong operating results, we made excellent progress on our developments by leasing 100% of our 500 North Gulph Road redevelopment project in King of Prussia, Pennsylvania to an existing tenant needing to expand.  Also, after selling a 6.6 acre land parcel in Austin, Texas, we entered into a fee development agreement on a 250,000 square foot office building for the new owner.  After a successful first quarter, we are narrowing our current 2018 FFO guidance range from $1.33 to $1.43 to $1.34 to $1.42.”

First Quarter 2018 Highlights

Financial Results

Portfolio Results

Recent Transaction Activity

Joint Venture Activity

2929 Walnut Street, Suite 1700, Philadelphia, PA 19104 Phone: (610) 325-5600 • Fax: (610) 325-5622

Development/Redevelopment Acquisitions

Schuylkill Yards

2018 Finance / Capital Markets Activity

Results for the Three Months Ended March 31, 2018

Net income allocated to common shares totaled $44.2 million, or $0.25 per diluted share, in the first quarter of 2018 compared to a net income allocated to common shares totaled $19.3 million, or $0.11 per diluted shares in the first quarter of 2017.  First quarter of 2018 results include gains on property sales totaling $37.3 million, or $0.21 per diluted share.

FFO available to common shares and units in the first quarter of 2018 totaled $57.3 million, or $0.32 per diluted share, versus $56.1 million or $0.32 per diluted share in the first quarter of 2017.  Our first quarter 2018 payout ratio ($0.18 common share distribution / $0.32 FFO per diluted share) was 56.3%.  

Operating and Leasing Activity

In the first quarter of 2018, our Net Operating Income (NOI) excluding termination revenues and other income items decreased 4.4% on a GAAP basis and decreased 1.4% on a cash basis for our 83 same store properties, which were 92.5% and 94.6% occupied on March 31, 2018 and March 31, 2017, respectively.

We leased approximately 406,000 square feet and commenced occupancy on 302,000 square feet during the first quarter of 2018.  The first quarter occupancy activity includes 171,000 square feet of renewals, 98,000 square feet of new leases and 33,000 square feet of tenant expansions.  We have an additional 294,000 square feet of executed new leasing scheduled to commence subsequent to March 31, 2018.

We achieved a 51% tenant retention ratio in our core portfolio with net negative absorption of (95,000) square feet during the first quarter of 2018.  First quarter rental rate growth increased 10.5% as our renewal rental rates increased 9.7% and our new lease/expansion rental rates increased 11.9%, all on a GAAP basis.

At March 31, 2018, our core portfolio of 88 properties comprising 15.7 million square feet was 92.3% occupied and we are now 94.2% leased (reflecting new leases commencing after March 31, 2018).

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Distributions

On February 28, 2018, our Board of Trustees declared a quarterly cash dividend of $0.18 per common share and OP Unit that was paid on April 18, 2018 to holders of record on April 4, 2018.

2018 Earnings and FFO Guidance

Based on current plans and assumptions and subject to the risks and uncertainties more fully described in our Securities and Exchange Commission filings, we are adjusting our 2018 net income guidance of $0.29 - $0.39 to $0.29 - $0.37 per diluted share and 2018 FFO guidance of $1.33 - $1.43 to $1.34 - $1.42 per diluted share.  This guidance is provided for informational purposes and is subject to change.  The following is a reconciliation of the calculation of 2018 FFO and earnings per diluted share:

Our 2018 FFO key assumptions to include:

About Brandywine Realty Trust

Brandywine Realty Trust (NYSE: BDN) is one of the largest, publicly traded, full-service, integrated real estate companies in the United States with a core focus in the Philadelphia, Washington, D.C., and Austin markets.  Organized as a real estate investment trust (REIT), we own, develop, lease and manage an urban, town center and transit-oriented portfolio comprising 185 properties and 25.3 million square feet as of March 31, 2018, which excludes assets held for sale.  Our purpose is to shape, connect and inspire the world around us through our expertise, the relationships we foster, the communities in which we live and work, and the history we build together.  For more information, please visit www.brandywinerealty.com.

Conference Call and Audio Webcast

BDN management will discuss 2018 financial results and earnings guidance for fiscal 2018 on Friday, April 20, 2018 at 9:00 a.m. Eastern Time.  The conference call can be accessed by dialing 1-833-818-6810 and providing conference ID: 7876108.  Beginning two hours after the conference call, a taped replay of the call can be accessed

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through Friday, May 4, 2018, by calling 1-855-859-2056 and entering access code 7876108.  The conference call can also be accessed via a webcast on our website at www.brandywinerealty.com.

Looking Ahead – Second Quarter 2018 Conference Call

We anticipate we will release our second quarter 2018 earnings on Thursday, July 19, 2018, after the market close and will host our second quarter 2018 conference call on Friday, July 20, 2018 at 9:00 a.m. Eastern Time.  We expect to issue a press release in advance of these events to reconfirm the dates and times and provide all related information.

Forward-Looking Statements

Estimates of future earnings per share, FFO per share, common share dividend distributions and certain other statements in this release constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995.  Such forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our and our affiliates’ actual results, performance, achievements or transactions to be materially different from any future results, performance, achievements or transactions expressed or implied by such forward-looking statements.  Such risks, uncertainties and other factors relate to, among others: our ability to lease vacant space and to renew or relet space under expiring leases at expected levels; competition with other real estate companies for tenants; the potential loss or bankruptcy of major tenants; interest rate levels; the availability of debt, equity or other financing; risks of acquisitions, dispositions and developments, including the cost of construction delays and cost overruns; unanticipated operating and capital costs; our ability to obtain adequate insurance, including coverage for terrorist acts; dependence upon certain geographic markets; and general and local economic and real estate conditions, including the extent and duration of adverse changes that affect the industries in which our tenants operate.  The declaration and payment of future dividends (both timing and amount) is subject to the determination of our Board of Trustees, in its sole discretion, after considering various factors, including the Company's financial condition, historical and forecast operating results, and available cash flow, as well as any applicable laws and contractual covenants and any other relevant factors.  The Company's practice regarding payment of dividends may be modified at any time and from time to time.  Additional information on factors which could impact us and the forward-looking statements contained herein are included in our filings with the Securities and Exchange Commission, including our Form 10-K for the year ended December 31, 2017.  We assume no obligation to update or supplement forward-looking statements that become untrue because of subsequent events except as required by law.

Non-GAAP Supplemental Financial Measures

We compute our financial results in accordance with generally accepted accounting principles (GAAP).  Although FFO and NOI are non-GAAP financial measures, we believe that FFO and NOI calculations are helpful to shareholders and potential investors and are widely recognized measures of real estate investment trust performance.  At the end of this press release, we have provided a reconciliation of the non-GAAP financial measures to the most directly comparable GAAP measure.

Funds from Operations (FFO)

We compute FFO in accordance with standards established by the National Association of Real Estate Investment Trusts (NAREIT), which may not be comparable to FFO reported by other REITs that do not compute FFO in accordance with the NAREIT definition, or that interpret the NAREIT definition differently than us.  NAREIT defines FFO as net income (loss) before non-controlling interests and excluding gains (losses) on sales of depreciable operating property, impairment losses on depreciable consolidated real estate, impairment losses on investments in unconsolidated real estate ventures and extraordinary items (computed in accordance with GAAP); plus real estate related depreciation and amortization (excluding amortization of deferred financing costs), and after similar adjustments for unconsolidated joint ventures.  Net income, the GAAP measure that we believe to be most directly comparable to FFO, includes depreciation and amortization expenses, gains or losses on property sales, extraordinary items and non-controlling interests.  To facilitate a clear understanding of our historical operating results, FFO should be examined in conjunction with net income (determined in accordance with GAAP) as presented in the financial statements included elsewhere in this release.  FFO does not represent cash flow from operating activities (determined in accordance with GAAP) and should not be considered to be an alternative to net income (loss) (determined in accordance with GAAP) as an indication of our financial performance or to be an

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alternative to cash flow from operating activities (determined in accordance with GAAP) as a measure of our liquidity, nor is it indicative of funds available for our cash needs, including our ability to make cash distributions to shareholders.

Net Operating Income (NOI)

NOI is a financial measure equal to net income available to common shareholders, the most directly comparable GAAP financial measure, plus corporate general and administrative expense, depreciation and amortization, interest expense, non-controlling interest in the Operating Partnership and losses from early extinguishment of debt, less interest income, development and management income, gains from property dispositions, gains on sale from discontinued operations, gains on early extinguishment of debt, income from discontinued operations, income from unconsolidated joint ventures and non-controlling interest in property partnerships.  In some cases we also present NOI on a cash basis, which is NOI after eliminating the effects of straight-lining of rent and deferred market intangible amortization.  NOI presented by us may not be comparable to NOI reported by other REITs that define NOI differently.  NOI should not be considered an alternative to net income as an indication of our performance or to cash flows as a measure of the Company's liquidity or its ability to make distributions.  NOI is a useful measure for evaluating the operating performance of our properties, as it excludes certain components from net income available to common shareholders in order to provide results that are more closely related to a property's results of operations.  NOI is used internally to evaluate the performance of our operating segments and to make decisions about resource allocations.  We concluded that NOI provides useful information to investors regarding our financial condition and results of operations, as it reflects only the income and expense items incurred at the property level, as well as the impact on operations from trends in occupancy rates, rental rates, operating costs and acquisition and development activity on an unlevered basis.

Core Portfolio

Our core portfolio is comprised of our wholly-owned properties, excluding any properties currently in development, re-development or re-entitlement.

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BRANDYWINE REALTY TRUST

CONSOLIDATED BALANCE SHEETS

(in thousands)

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BRANDYWINE REALTY TRUST

CONSOLIDATED STATEMENTS OF OPERATIONS

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

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BRANDYWINE REALTY TRUST

FUNDS FROM OPERATIONS

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

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BRANDYWINE REALTY TRUST

SAME STORE OPERATIONS – 1st QUARTER

(unaudited and in thousands)

Of the 94 properties owned by the Company as of March 31, 2018, a total of 83 properties ("Same Store Properties") containing an aggregate of 14.3 million net rentable square feet were owned for the entire three-month periods ended March 31, 2018 and 2017. As of March 31, 2018, five properties were recently completed/acquired, two properties were in development and four properties were in redevelopment. Average occupancy for the Same Store Properties was 92.5% during 2018 and 94.5% during 2017. The following table sets forth revenue and expense information for the Same Store Properties:

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