<ACCESSION-NUMBER>0000790816-20-000008 <TYPE>10-K <PUBLIC-DOCUMENT-COUNT>158 <PERIOD>20191231 <FILING-DATE>20200302 <DATE-OF-FILING-DATE-CHANGE>20200302 <FILER> <COMPANY-DATA> <CONFORMED-NAME>BRANDYWINE REALTY TRUST <CIK>0000790816 <ASSIGNED-SIC>6798 <IRS-NUMBER>232413352 <STATE-OF-INCORPORATION>MD <FISCAL-YEAR-END>1231 </COMPANY-DATA> <FILING-VALUES> <FORM-TYPE>10-K <ACT>34 <FILE-NUMBER>001-09106 <FILM-NUMBER>20676201 </FILING-VALUES> <BUSINESS-ADDRESS> <STREET1>2929 WALNUT STREET <STREET2>SUITE 1700 <CITY>PHILADELPHIA <STATE>PA <ZIP>19104 <PHONE>6103255600 </BUSINESS-ADDRESS> <MAIL-ADDRESS> <STREET1>2929 WALNUT STREET <STREET2>SUITE 1700 <CITY>PHILADELPHIA <STATE>PA <ZIP>19104 </MAIL-ADDRESS> <FORMER-COMPANY> <FORMER-CONFORMED-NAME>LINPRO SPECIFIED PROPERTIES <DATE-CHANGED>19920703 </FORMER-COMPANY> </FILER> <FILER> <COMPANY-DATA> <CONFORMED-NAME>BRANDYWINE OPERATING PARTNERSHIP, L.P. <CIK>0001060386 <ASSIGNED-SIC>6798 <IRS-NUMBER>232862640 <STATE-OF-INCORPORATION>DE <FISCAL-YEAR-END>1231 </COMPANY-DATA> <FILING-VALUES> <FORM-TYPE>10-K <ACT>34 <FILE-NUMBER>000-24407 <FILM-NUMBER>20676200 </FILING-VALUES> <BUSINESS-ADDRESS> <STREET1>C/O BRANDYWINE REALTY TRUST <STREET2>2929 WALNUT STREET, SUITE 1700 <CITY>PHILADELPHIA <STATE>PA <ZIP>19104 <PHONE>6103255600 </BUSINESS-ADDRESS> <MAIL-ADDRESS> <STREET1>C/O BRANDYWINE REALTY TRUST <STREET2>2929 WALNUT STREET, SUITE 1700 <CITY>PHILADELPHIA <STATE>PA <ZIP>19104 </MAIL-ADDRESS> <FORMER-COMPANY> <FORMER-CONFORMED-NAME>BRANDYWINE OPERATING PARTNERSHIP LP /PA <DATE-CHANGED>19980428 </FORMER-COMPANY> </FILER>