Document:

<PAGE>

                                    AGREEMENT

         THIS AGREEMENT is entered into as of the 12th day of May, 1999
by and between Anthony A. Nichols, Jr. ("Executive") and Brandywine Realty Trust
(the "Company") and amends and restates in its entirety the Agreement dated
____________, 1999 (the "Prior Agreement") between Executive and Company.

     WHEREAS, Executive is currently employed by the Company and/or a Subsidiary
(as defined below) of the Company;

     WHEREAS, in order to encourage Executive to remain an employee of the
Company and/or a Subsidiary, the Company is entering into this Agreement with
Executive.

     NOW, THEREFORE, the parties hereto, intending to be legally bound, hereby
agree as follows:

     1. Payment Obligation. The Company agrees that if (i) a Change of Control
(as defined below) of the Company occurs at a time when Executive is then an
employee of the Company and/or a Subsidiary of the Company and (ii) within one
year of the occurrence of the Change of Control either (a) the Company or the
purchaser or successor thereto (the "Purchaser") terminates the employment of
Executive other than for Cause (as defined below) or (b) Executive resigns for
Good Reason (as defined below), then the Company or Purchaser will be obligated
to (i) continue to pay to Executive an amount equal to his base salary as in
effect at the time of the Change of Control for a period expiring 547 days after
the effective date of Executive's termination of employment and (ii) during the
period referenced in the preceding clause (i), pay to Executive, in equal
monthly installments, an amount equal to his bonus, if any, for the year
preceding the termination or resignation.

     2. No Right to Employment. This Agreement shall not confer upon Executive
any right to remain an employee of the Company or a Subsidiary of the Company,
and shall only entitle Executive to the salary continuation payments in the
limited circumstances set forth in Paragraph 1 above.

     3. Certain Definitions. As used herein: (i) the terms "Change of Control"
and "Subsidiary" shall have the respective meanings assigned to them in the
Company's 1997 Long-Term Incentive Plan, as amended (the "Plan"), (ii) the term
"Cause" shall have the meaning assigned to it in the Plan (except that
references in such Plan definition to "Company" shall be interpreted to mean the
Company or Purchaser, as applicable) and (iii) the term "Good Reason" shall mean
any of (a) a reduction in Executive's base salary as in effect at the time of
the Change of Control, (b) a significant adverse alteration in the nature or
status of Executive's responsibilities from those in effect at the time of the
Change of Control or (c) relocation of the

<PAGE>

place where Executive performs his day-to-day responsibilities at the time of
the Change of Control by more than 30 miles.

     4. Tax Witholding, etc. All compensation payable under this Agreement shall
be subject to customary withholding taxes and other employment taxes as required
with respect to compensation paid by an employer to an employee and the amount
of compensation payable hereunder shall be reduced appropriately to reflect the
amount of any required withholding. The Company shall have no obligation to make
any payments to the Executive or make the Executive whole for the amount of any
required taxes.

     5. "Gross-Up Payment." If Executive is employed by the Company or a
Subsidiary at the time of a Change of Control and Executive's employment by the
Company or a Subsidiary is terminated under circumstances that entitle Executive
to a payment described in Paragraph 1 of this Agreement, the Company shall pay
Executive the Gross-Up Payment, computed as provided in this Paragraph 5.

          1. For purposes of this Agreement, the term "Gross-Up Payment" means
     an amount such that the net amount retained by Executive, after deduction
     of the excise tax imposed under section 4999 of the Internal Revenue Code
     of 1986, as amended (the "Code") or any successor provision of law ("Excise
     Tax"), if any, on the "Total Payments" (as hereinafter defined) and any
     federal state and local income tax, employment tax and Excise Tax upon the
     payment provided for by this Section 5, shall be equal to the excess of the
     Total Payments (including the payment provided for in this Section 5) over
     the payment provided for by this Section 5.

          2. For purposes of determining whether any of the Total Payments will
     be subject to Excise Tax and the amount of such Excise Tax,

               (1) any payments or benefits received or to be received by
          Executive in connection with a Change of Control or Executive's
          termination of employment (whether pursuant to the terms of this
          Agreement or any other plan, arrangement or agreement with the Company
          or a Subsidiary, any person whose actions result in a Change of
          Control or any person affiliated with the Company or such person (the
          "Total Payments")) shall be treated as "parachute payments" (within
          the meaning of section 280G(b)(2) of the Code) unless, in the opinion
          of a tax advisor selected by the Company's independent auditors and
          reasonably acceptable to Executive, such payments or benefits (in
          whole or in part) do not constitute parachute payments, including by
          reason of section 280G(b)(4)(A) of the Code, and all "excess parachute
          payments" (within the meaning of section 280G(b)(1) of the Code) shall
          be treated as subject to Excise Tax unless, in the opinion of such tax
          counsel, such excess parachute payments (in whole or in part)
          represent reasonable compensation for services actually rendered
          (within the meaning of section 280G(b)(4)(B) of the Code), or are
          otherwise not subject to Excise Tax; and

                                      -2-

<PAGE>

               (2) the value of any noncash benefits or deferred payment or
          benefit shall be determined by the Company's independent auditors in
          accordance with the principles of sections 280G(d)(3) and (4) of the
          Code. For purposes of determining the amount of the Gross-Up Payment,
          Executive shall be deemed to pay federal income tax at the highest
          marginal rate of federal income taxation in the calendar year in which
          the Gross-Up Payment is to be made and state and local income taxes at
          the highest marginal rate of taxation in the state and locality of
          Executive's residence on the date of Executive's termination of
          employment (or such other time as is hereinafter described), net of
          the maximum reduction in federal income taxes which could be obtained
          from the deduction of such state and local taxes.

          3. Notwithstanding the foregoing, if the Excise Tax is subsequently
     determined to be less than the amount taken into account hereunder at the
     time of termination of Executive's employment, Executive shall repay to the
     Company, at the time that the amount of such reduction in Excise Tax is
     finally determined, the portion of the Gross-Up Payment attributable to
     such reduction (plus that portion of the Gross-Up Payment attributable to
     the Excise Tax and federal, state and local income tax imposed on the
     Gross-Up Payment being repaid by Executive to the extent that such
     repayment results in a reduction in Excise Tax or a federal, state or local
     income tax deduction), plus interest on the amount of such repayment at the
     rate provided in section 1274(b)(2)(B) of the Code. If the Excise Tax is
     subsequently determined to exceed the amount taken into account hereunder
     at the time of termination of Executive's employment (including by reason
     of any payment the existence or amount of which cannot be determined at the
     time of the Gross-Up Payment), the Company shall make an additional
     Gross-Up Payment in respect of such excess (plus any interest, penalties or
     additions payable by Executive with respect to such excess) at the time
     that the amount of such excess is finally determined. Executive and the
     Company shall each reasonably cooperate with the other in connection with
     any administrative or judicial proceedings concerning the existence or
     amount of liability for Excise Tax with respect to the Total Payments. Such
     additional payment shall be made within 30 days following the date
     Executive notifies the Company that he is subject to the Excise Tax.

          4. The Company shall promptly pay in advance or reimburse Executive
     for all reasonable legal fees and expenses incurred in good faith by
     Executive in connection with any tax audit or proceeding to the extent
     attributable to the application of section 4999 of the Code to any payment
     or benefit provided hereunder.

     6. Miscellaneous.

          1. Controlling Law. This Agreement, and all questions relating to its
     validity, interpretation, performance and enforcement, shall be governed by
     and construed in accordance with the laws of the Commonwealth of
     Pennsylvania.

                                      -3-

<PAGE>

          2. Entire Agreement. This Agreement contains the entire understanding
     among the parties hereto with respect to the subject matter hereof and
     supersedes all prior agreements and understandings, inducements or
     conditions, express or implied, oral or written, except as herein
     contained. This Agreement may not be modified or amended other than by an
     agreement in writing.

          3. Liability of Trustees, etc. No recourse shall be had for any
     obligation of the Company hereunder, or for any claim based thereon or
     otherwise in respect thereof, against any past, present or future trustee,
     shareholder, officer or employee of the Company, whether by virtue of any
     statute or rule of law, or by the enforcement of any assessment or penalty
     or otherwise, all such liability being expressly waived and released by
     Executive.

          4. Prior Agreement. The Prior Agreement is hereby amended and restated
     in its entirety.

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the day and year first above written.

                                      BRANDYWINE REALTY TRUST

                                      By: /s/ Gerard H. Sweeney
                                          --------------------------------------
                                          President and Chief Executive Officer

                                          /s/ Anthony A. Nichols, Jr.
                                          --------------------------------------
                                          Anthony A. Nichols, Jr.

                                      -4-<PAGE>
                                    AGREEMENT

     THIS AGREEMENT is entered into as of the 12th day of May, 1999 by and
between H. Jeffrey DeVuono ("Executive") and Brandywine Realty Trust (the
"Company") and amends and restates in its entirety the Agreement dated_________,
1999 (the "Prior Agreement") between Executive and the Company.

     WHEREAS, Executive is currently employed by the Company and/or a Subsidiary
(as defined below) of the Company;

     WHEREAS, in order to encourage Executive to remain an employee of the
Company and/or a Subsidiary, the Company is entering into this Agreement with
Executive.

     NOW, THEREFORE, the parties hereto, intending to be legally bound, hereby
agree as follows:

     1. Payment Obligation. The Company agrees that if (i) a Change of Control
(as defined below) of the Company occurs at a time when Executive is then an
employee of the Company and/or a Subsidiary of the Company and (ii) within one
year of the occurrence of the Change of Control either (a) the Company or the
purchaser or successor thereto (the "Purchaser") terminates the employment of
Executive other than for Cause (as defined below) or (b) Executive resigns for
Good Reason (as defined below), then the Company or Purchaser will be obligated
to (i) continue to pay to Executive an amount equal to his base salary as in
effect at the time of the Change of Control for a period expiring 547 days after
the effective date of Executive's termination of employment and (ii) during the
period referenced in the preceding clause (i), pay to Executive, in equal
monthly installments, an amount equal to his bonus, if any, for the year
preceding the termination or resignation.

     2. No Right to Employment. This Agreement shall not confer upon Executive
any right to remain an employee of the Company or a Subsidiary of the Company,
and shall only entitle Executive to the salary continuation payments in the
limited circumstances set forth in Paragraph 1 above.

     3. Certain Definitions. As used herein: (i) the terms "Change of Control"
and "Subsidiary" shall have the respective meanings assigned to them in the
Company's 1997 Long-Term Incentive Plan, as amended (the "Plan"), (ii) the term
"Cause" shall have the meaning assigned to it in the Plan (except that
references in such Plan definition to "Company" shall be interpreted to mean the
Company or Purchaser, as applicable) and (iii) the term "Good Reason" shall mean
any of (a) a reduction in Executive's base salary as in effect at the time of
the Change of Control, (b) a significant adverse alteration in the nature or
status of Executive's responsibilities from those in effect at the time of the
Change of Control or (c) relocation of the

<PAGE>

place where Executive performs his day-to-day responsibilities at the time of
the Change of Control by more than 30 miles.

     4. Tax Witholding, etc. All compensation payable under this Agreement shall
be subject to customary withholding taxes and other employment taxes as required
with respect to compensation paid by an employer to an employee and the amount
of compensation payable hereunder shall be reduced appropriately to reflect the
amount of any required withholding. The Company shall have no obligation to make
any payments to the Executive or make the Executive whole for the amount of any
required taxes.

     5. "Gross-Up Payment." If Executive is employed by the Company or a
Subsidiary at the time of a Change of Control and Executive's employment by the
Company or a Subsidiary is terminated under circumstances that entitle Executive
to a payment described in Paragraph 1 of this Agreement, the Company shall pay
Executive the Gross-Up Payment, computed as provided in this Paragraph 5.

          1. For purposes of this Agreement, the term "Gross-Up Payment" means
     an amount such that the net amount retained by Executive, after deduction
     of the excise tax imposed under section 4999 of the Internal Revenue Code
     of 1986, as amended (the "Code") or any successor provision of law ("Excise
     Tax"), if any, on the "Total Payments" (as hereinafter defined) and any
     federal state and local income tax, employment tax and Excise Tax upon the
     payment provided for by this Section 5, shall be equal to the excess of the
     Total Payments (including the payment provided for in this Section 5) over
     the payment provided for by this Section 5.

          2. For purposes of determining whether any of the Total Payments will
     be subject to Excise Tax and the amount of such Excise Tax,

               (1) any payments or benefits received or to be received by
          Executive in connection with a Change of Control or Executive's
          termination of employment (whether pursuant to the terms of this
          Agreement or any other plan, arrangement or agreement with the Company
          or a Subsidiary, any person whose actions result in a Change of
          Control or any person affiliated with the Company or such person (the
          "Total Payments")) shall be treated as "parachute payments" (within
          the meaning of section 280G(b)(2) of the Code) unless, in the opinion
          of a tax advisor selected by the Company's independent auditors and
          reasonably acceptable to Executive, such payments or benefits (in
          whole or in part) do not constitute parachute payments, including by
          reason of section 280G(b)(4)(A) of the Code, and all "excess parachute
          payments" (within the meaning of section 280G(b)(1) of the Code) shall
          be treated as subject to Excise Tax unless, in the opinion of such tax
          counsel, such excess parachute payments (in whole or in part)
          represent reasonable compensation for services actually rendered
          (within the meaning of section 280G(b)(4)(B) of the Code), or are
          otherwise not subject to Excise Tax; and

                                      -2-
<PAGE>

               (2) the value of any noncash benefits or deferred payment or
          benefit shall be determined by the Company's independent auditors in
          accordance with the principles of sections 280G(d)(3) and (4) of the
          Code. For purposes of determining the amount of the Gross-Up Payment,
          Executive shall be deemed to pay federal income tax at the highest
          marginal rate of federal income taxation in the calendar year in which
          the Gross-Up Payment is to be made and state and local income taxes at
          the highest marginal rate of taxation in the state and locality of
          Executive's residence on the date of Executive's termination of
          employment (or such other time as is hereinafter described), net of
          the maximum reduction in federal income taxes which could be obtained
          from the deduction of such state and local taxes.

          3. Notwithstanding the foregoing, if the Excise Tax is subsequently
     determined to be less than the amount taken into account hereunder at the
     time of termination of Executive's employment, Executive shall repay to the
     Company, at the time that the amount of such reduction in Excise Tax is
     finally determined, the portion of the Gross-Up Payment attributable to
     such reduction (plus that portion of the Gross-Up Payment attributable to
     the Excise Tax and federal, state and local income tax imposed on the
     Gross-Up Payment being repaid by Executive to the extent that such
     repayment results in a reduction in Excise Tax or a federal, state or local
     income tax deduction), plus interest on the amount of such repayment at the
     rate provided in section 1274(b)(2)(B) of the Code. If the Excise Tax is
     subsequently determined to exceed the amount taken into account hereunder
     at the time of termination of Executive's employment (including by reason
     of any payment the existence or amount of which cannot be determined at the
     time of the Gross-Up Payment), the Company shall make an additional
     Gross-Up Payment in respect of such excess (plus any interest, penalties or
     additions payable by Executive with respect to such excess) at the time
     that the amount of such excess is finally determined. Executive and the
     Company shall each reasonably cooperate with the other in connection with
     any administrative or judicial proceedings concerning the existence or
     amount of liability for Excise Tax with respect to the Total Payments. Such
     additional payment shall be made within 30 days following the date
     Executive notifies the Company that he is subject to the Excise Tax.

          4. The Company shall promptly pay in advance or reimburse Executive
     for all reasonable legal fees and expenses incurred in good faith by
     Executive in connection with any tax audit or proceeding to the extent
     attributable to the application of section 4999 of the Code to any payment
     or benefit provided hereunder.

     6. Miscellaneous.

          1. Controlling Law. This Agreement, and all questions relating to its
     validity, interpretation, performance and enforcement, shall be governed by
     and construed in accordance with the laws of the Commonwealth of
     Pennsylvania.

                                      -3-
<PAGE>

          2. Entire Agreement. This Agreement contains the entire understanding
     among the parties hereto with respect to the subject matter hereof and
     supersedes all prior agreements and understandings, inducements or
     conditions, express or implied, oral or written, except as herein
     contained. This Agreement may not be modified or amended other than by an
     agreement in writing.

          3. Liability of Trustees, etc. No recourse shall be had for any
     obligation of the Company hereunder, or for any claim based thereon or
     otherwise in respect thereof, against any past, present or future trustee,
     shareholder, officer or employee of the Company, whether by virtue of any
     statute or rule of law, or by the enforcement of any assessment or penalty
     or otherwise, all such liability being expressly waived and released by
     Executive.

          4. Prior Agreement. The Prior Agreement is hereby amended and restated
     in its entirety.

     IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of
the day and year first above written.

                                       BRANDYWINE REALTY TRUST

                                       By: /s/ Gerard H. Sweeney
                                          --------------------------------------
                                          President and Chief Executive Officer

                                          /s/ H. Jeffrey DeVuono
                                          --------------------------------------
                                          H. Jeffrey DeVuono

                                      -4-

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