BRANDYWINE REALTY TRUST

We are 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, life science/lab, residential and mixed-use properties. During the twelve months ended December 31, 2025, we owned and managed properties within four segments: (1) Philadelphia Central Business District ( Philadelphia CBD ), (2) Pennsylvania Suburbs, (3) Austin, Texas, and (4) Other. The Philadelphia CBD segment includes properties located in the City of Philadelphia, Pennsylvania. The Pennsylvania Suburbs segment includes properties in Chester, Delaware and Montgomery counties in the Philadelphia suburbs. The Austin, Texas segment includes properties in the City of Austin, Texas. The Other segment includes properties in Washington, D.C., Northern Virginia, Southern Maryland, Camden County, New Jersey and New Castle County, Delaware. In addition to our four segments, our corporate group is responsible for cash and investment management, development/redevelopment of certain real estate properties during the construction period, and certain other general support functions. See Note 1 Organization of the Parent Company and the Operating Partnership, to our Consolidated Financial Statements for our property portfolio, management services and land holdings. Unless otherwise indicated, all references in this Form 10-K to square feet represent the net rentable area. The Parent Company was organized and commenced its operations in 1986 as a Maryland REIT.