
<PAGE>
                      SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C. 20549




                                   FORM 8-K

                                Current Report


                 Filed pursuant to Section 13 or 15(d) of the
                        Securities Exchange Act of 1934



       Date of Report (Date of earliest event reported) February 3, 1998



                            BRANDYWINE REALTY TRUST
                            -----------------------
            (Exact name of registrant as specified in its charter)




          MARYLAND                      1-9106                 23-2413352
(State or Other Jurisdiction          (Commission           (I.R.S. Employer
      of Incorporation)               file number)        Identification Number)



                     16 Campus Boulevard, Newtown Square,
                   Pennsylvania 19073 (Address of principal
                              executive offices)


                                (610) 325-5600
             (Registrant's telephone number, including area code)
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Item 2.  Acquisition or Disposition of Assets.

         On March 4, 1998, the Company, through Brandywine Operating
Partnership, L.P. (the "Operating Partnership"), consummated the acquisition
of the Three Christina Office Centre, an approximately 311,286 net rentable
square foot office building in Wilmington, Delaware. The purchase price for
this property, which was paid through borrowings under the Company's revolving
credit facility, was approximately $50.6 million. The Company has provided
additional information with respect to this acquisition under the caption
"Three Christina Centre" in Item 5 of a Current Report on Form 8-K filed with
the Securities and Exchange Commission on February 23, 1998.

Item 5.  Other Events

         (i) Plymouth Meeting Joint Venture. On February 3, 1998, the
Operating Partnership acquired an approximately 60% economic interest in a
partnership that owns approximately 12.5 acres of land in Plymouth Meeting,
Pennsylvania. The Company believes the land (on which an inn is currently
situated) can accommodate an office building containing approximately 190,000
net rentable square feet. The Operating Partnership acquired its interest
through a loan and equity contribution aggregating approximately $4.3 million.
The loan and equity contribution are entitled to a 10% priority return. As of
the date of this Form 8-K, the partnership has not determined its plans for
the land.

         (ii) 1000 Chesterbrook Boulevard Joint Venture. On February 25, 1998,
the Operating Partnership acquired a 50% interest in a newly-formed
partnership that was established to develop a three-story office property
containing approximately 180,000 net rentable square feet in Chester County,
Pennsylvania. Total project costs are estimated to be approximately $35.9
million. The Operating Partnership has agreed to contribute $5.4 million to
the partnership, and the other partner has agreed to contribute approximately
12.5 acres of undeveloped land to the partnership upon receipt of a
construction loan. Architectural plans for the development of the land have
not been completed and development of the land is subject to receipt of a
construction loan as well as certain land development and other necessary
approvals.

         (iii) Exercise of Over-allotment Option. On March 6, 1998, the
Company issued an additional 1,000,000 common shares of beneficial interest at
a price to the public of $24.00 per share. Aggregate proceeds to the Company,
net of underwriting discounts and commissions of $1.23 per share and before
expenses, totaled $22,770,000. This issuance was the result of the exercise of
the over-allotment option granted by the Company to the underwriters in its
10,000,000 common share offering consummated on February 4, 1998.

         (iv) Increase in Credit Facility. On March 17, 1998, the Company 
increased the maximum amount available for borrowing under its unsecured 
revolving credit facility from $300 million to $330 million.

         (v) 920 Harvest Drive. On March 16, 1998, the Operating Partnership 
acquired a two-story office property known as 920 Harvest Drive. This property
contains approximately 104,505 net rentable square feet and is located in Blue 
Bell, Montgomery County, Pennsylvania, for a cash purchase price of 
approximately $12.0 million. The purchase price was funded from borrowings 
under the Company's revolving credit facility. As of March 16, 1998, 920 Harvest
Drive was fully leased to two tenants. Aetna Life Insurance is the major 
tenant, occupying approximately 96% of the total net rentable square feet of 
the property.

         The seller of 920 Harvest Drive, Lincoln National Life Insurance 
Company (the "Seller") is a party unaffiliated with the Company and the 
Operating Partnership. The Company based its determination of the purchase 
price on the expected cash flow, physical condition, location, competitive 
advantages, existing tenancies and opportunties to retain and attract 
additional tenants. The purchase price was determined by arm's-length 
negotiation between the Company and the Seller.

Item 7.  Financial Statements, Pro Forma Financial Information and Exhibits.

         (c)   Exhibits.

               10.1 - Agreement of Purchase and Sale - Three Christiana Centre

               10.2 - Second Amendment to Amended and Restated Credit Agreement

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                                   SIGNATURE

                  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 hereunto duly authorized.



                                           BRANDYWINE REALTY TRUST


Date:  March 17, 1998                      By: /s/ Gerard H. Sweeney
                                               ---------------------
                                               Title: President and Chief
                                                      Executive Officer


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