Brandywine Realty Trust (NYSE: BDN), which owns and manages more than 7.5 million square feet of office space in Metro DC, announced today that it has signed over 428,000 square feet of new and renewed leases year-to-date.

"Despite the challenging economic environment, we have been able to maintain a high level of lease renewals and new tenant leases," stated Bob Wiberg, Executive Vice President and Senior Managing Director for the Metro Washington DC Region of Brandywine Realty Trust. "We attribute this success to the quality of our real estate portfolio and the high level of service offered by our leasing and management personnel."

Leasing highlights include the following transactions:

* Serco renewed a 34,623 square foot lease at 11781 Lee Jackson Highway in Fairfax, VA. Serco was represented by Harry Klaff of Jones Lang LaSalle.
* URS renewed a 13,258 square foot lease at 13825 Sunrise Drive in Dulles Corner, VA. URS was represented by Laurent Myers of Studley.
* Digital Sandbox, Inc. renewed a 7,279 square foot lease and signed a 6,535 square foot lease expansion at 8260 Greensboro Drive in Tysons Corner, VA. Digital Sandbox was represented by Kelly McBride of Jones Lang LaSalle.

In addition to these leases, Brandywine Realty Trust previously announced new, renewed and expansion leases of:

* AT&T Government Solutions renewed a 105,172 square foot lease at 1900 Gallows Road, Vienna, VA. AT&T was represented by Cathy Delcoco and Brad Davis of CBRE.
* National Rural Utilities Cooperative Finance Corporation extended two leases, one at 2201 Cooperative Way (92,284 square feet) and the other at 2121 Cooperative Way (7,316 square feet) in Herndon, VA.
* The existing tenant signed a lease expansion for 29,939 square feet at 13820 Sunrise Valley Drive, Herndon, VA to occupy 99.5% of the building. Meredith LaPier and Brad Davis of CBRE represented the tenant.
* Lockheed Martin renewed a 20,667 square foot lease at 2411 Dulles Corner, Herndon, VA. Lockheed Martin was represented by Traci Morris Cole of Jones Lang LaSalle.
* Lockheed Martin signed a new 22,311 square foot lease at 2275 Research Boulevard, Rockville, MD. Lockheed Martin was represented by Traci Morris Cole of Jones Lang LaSalle.
* Red Hat signed a renewal and lease expansion totaling 23,879 square feet at 8260 Greensboro Drive, Tysons Corner, VA. Red Hat was represented by Brad Davis of CBRE.

About Brandywine Realty Trust

Brandywine Realty Trust is one of the largest, publicly traded, full-service, integrated real estate companies in the United States. Organized as a real estate investment trust and operating in select markets, Brandywine owns, develops and manages a primarily Class A, suburban and urban office portfolio aggregating approximately 37.3 million square feet, including 26.1 million square feet which it currently owns on a consolidated basis.

Forward-Looking Statements

Certain 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 the actual results, performance, achievements or transactions of the Company and its affiliates or industry results 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, the Company's ability to lease vacant space and to renew or relet space under expiring leases at expected levels, the potential loss of major tenants, interest rate levels, the availability and terms of debt and equity financing, competition with other real estate companies for tenants and acquisitions, risks of real estate acquisitions, dispositions and developments, including cost overruns and construction delays, unanticipated operating costs and the effects of general and local economic and real estate conditions. Additional information or factors which could impact the Company and the forward-looking statements contained herein are included in the Company's filings with the Securities and Exchange Commission. The Company assumes no obligation to update or supplement forward-looking statements that become untrue because of subsequent events.