Document:

Exhibit 10(nn)

 Exhibit 10(nn) 
 INDEMNIFICATION AGREEMENT 
 THIS INDEMNIFICATION AGREEMENT (this “Agreement”) is
entered into as of             , 2009, by and among Washington Real Estate Investment Trust, a Maryland real estate investment trust (the “Company”), and
            (the “Indemnitee”). 
 WHEREAS, the Indemnitee is an
officer or a member of the Board of Trustees of the Company and in such capacity is performing a valuable service for the Company; 
 WHEREAS, Maryland law permits the Company to enter into contracts with its officers or members of its Board of Trustees with respect to indemnification of, and advancement of expenses to, such persons; 
 WHEREAS, the Declaration of Trust of the Company (the “Declaration of Trust”) provides that each officer and trustee of the Company
shall be indemnified by the Company to the maximum extent permitted by Maryland law in effect from time to time and shall be entitled to advancement of expenses consistent with Maryland law; and 
 WHEREAS, to induce the Indemnitee to provide services to the Company as an officer or a member of the Board of Trustees, and to provide the
Indemnitee with specific contractual assurance that indemnification will be available to the Indemnitee regardless of, among other things, any amendment to or revocation of the Declaration of Trust or the Bylaws of the Company (“Bylaws”),
the Company desires to provide the Indemnitee with protection against personal liability as set forth herein. 
 NOW, THEREFORE, in
consideration of the premises and the covenants contained herein, the Company and the Indemnitee hereby agree as follows: 
  

	1.	DEFINITIONS. 

 For purposes of this Agreement:

  

	 	(A)	“Change in Control” shall mean 

  

	 	i.	the dissolution or liquidation of the Company; 

  

	 	ii.	the merger, consolidation, or reorganization of the Company with one or more other entities in which the Company is not the surviving entity or immediately following which the
persons or entities who were beneficial owners (as determined pursuant to Rule 13d-3 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)) of voting securities of the Company immediately prior thereto cease to
beneficially own more than fifty percent (50%) of the voting securities of the surviving entity immediately thereafter; 

  

	 	iii.	a sale of all or substantially all of the assets of the Company to another person or entity; 

  

	 	iv.	any transaction (including without limitation a merger or reorganization in which the Company is the surviving entity) that results in any person or entity or “group”
(within the meaning of Section 13(d)(3) or 14(d)(2) of the Exchange Act) (other than persons who are shareholders or affiliates immediately prior to the transaction) owning thirty percent (30%) or more of the combined voting power of all
classes of shares of the Company; or 

  

	 	v.	 individuals who, as of the date hereof, constitute the Board of Trustees (the “Incumbent Board”) cease for any reason to constitute at least a majority of
the Board of Trustees; provided, however, that any individual becoming a trustee 

	 	 
subsequent to the date hereof whose election, or nomination for election by the Company’s shareholders, was approved by a vote of at least a majority of
the trustees then comprising the Incumbent Board (either by a specific vote or by approval of the proxy statement of the Company in which such person is named as a nominee for trustee, without written objection to such nomination) shall be
considered as though such individual were a member of the Incumbent Board, but excluding, for this purpose, any such individual whose initial assumption of office occurs as a result of an actual or threatened election contest with respect to the
election or removal of trustees or other actual or threatened solicitation of proxies or contests by or on behalf of a person other than the Board of Trustees. 

  

	 	(B)	“Corporate Status” describes the status of a person who is or was a trustee or officer of the Company (or of any domestic or foreign predecessor entity of the Company in a
merger, consolidation or other transaction in which the predecessor’s interest ceased upon consummation of the transaction) or is or was serving at the request of the Company (or any such predecessor entity) as a director, officer, partner
(limited or general), member, manager, trustee, employee or agent of any other foreign or domestic corporation, partnership, joint venture, limited liability company, trust, other enterprise (whether conducted for profit or not for profit) or
employee benefit plan. The Company (and any domestic or foreign predecessor entity of the Company in a merger, consolidation or other transaction in which the predecessor’s existence ceased upon consummation of the transaction) shall be deemed
to have requested the Indemnitee to serve an employee benefit plan where the performance of the Indemnitee’s duties to the Company (or any such predecessor entity) also imposes or imposed duties on, or otherwise involves or involved services
by, the Indemnitee to the plan or participants or beneficiaries of the plan. 

  

	 	(C)	“Expenses” shall include all attorneys’ and paralegals’ fees, retainers, court costs, transcript costs, fees of experts, witness fees, travel expenses,
duplicating costs, printing and binding costs, telephone charges, postage, delivery service fees, and all other disbursements or expenses of the types customarily incurred in connection with prosecuting, defending, preparing to prosecute or defend,
investigating, or being or preparing to be a witness in a Proceeding. 

  

	 	(D)	“Proceeding” includes any action, suit, arbitration, alternate dispute resolution mechanism, investigation, administrative hearing, or any other proceeding, including
appeals therefrom, whether civil, criminal, administrative, or investigative, except one initiated by the Indemnitee pursuant to paragraph 8 of this Agreement to enforce such Indemnitee’s rights under this Agreement. 

 

	 	(E)	“Special Legal Counsel” means a law firm, or a member of a law firm, that is experienced in matters of corporation law and neither presently is, or in the past two years
has been, retained to represent (i) the Company or the Indemnitee in any matter material to either such party, or (ii) any other party to the Proceeding giving rise to a claim for indemnification hereunder. 

  

	2.	INDEMNIFICATION 

 The Company shall indemnify the
Indemnitee (A) against any and all judgments, penalties, fines, settlements and reasonable Expenses actually incurred by or on behalf of the Indemnitee in connection with any threatened, pending or completed Proceeding (or any claim, issue or
matter therein) to which the Indemnitee is, or is threatened to be made, a party by reason of the Indemnitee’s Corporate Status, subject to the terms and conditions of this Agreement, and (B) otherwise to the fullest extent permitted by
Maryland law in effect on the date hereof and as amended from time to time (provided, however, that no change in Maryland law shall have the effect of reducing the benefits available to Indemnitee hereunder based on Maryland law as in effect on the
date hereof). The Indemnitee shall not be entitled to 

 
indemnification under clause (A) of the preceding sentence if the Proceeding was one by or in the right of the Company and the Indemnitee shall have
been adjudged to be liable to the Company. For purposes of clause (A) of the preceding sentence, excise taxes assessed on the Indemnitee with respect to an employee benefit plan pursuant to applicable law shall be deemed fines. 
  

	3.	EXPENSES OF A SUCCESSFUL PARTY 

 Without limiting
the effect of any other provision of this Agreement and without regard to the provisions of paragraph 6 hereof, to the extent that the Indemnitee is, by reason of such Indemnitee’s Corporate Status, a party to and is successful, on the merits
or otherwise, in any Proceeding pursuant to a final non-appealable order, the Company shall indemnify the Indemnitee against all reasonable Expenses actually incurred by or on behalf of such Indemnitee in connection therewith. If the Indemnitee
is not wholly successful in such Proceeding pursuant to a final non-appealable order but is successful, on the merits or otherwise, as to one or more but less than all claims, issues, or matters in such Proceeding pursuant to a final non-appealable
order, the Company shall indemnify the Indemnitee against all reasonable Expenses actually incurred by or on behalf of such Indemnitee in connection with each successfully resolved claim, issue or matter. For purposes of this paragraph and
without limitation, the termination of any claim, issue or matter in such Proceeding by dismissal, with or without prejudice, shall be deemed to be a successful result as to such claim, issue or matter. 
  

	4.	ADVANCEMENT OF EXPENSES 

 The Company shall advance
all reasonable Expenses incurred by or on behalf of the Indemnitee in connection with any Proceeding within 20 days after the receipt by the Company of a statement from the Indemnitee requesting such advance from time to time, whether prior to or
after final disposition of such Proceeding. Such statement shall reasonably evidence the Expenses incurred or to be incurred by the Indemnitee and shall include or be preceded or accompanied by (i) a written affirmation by the Indemnitee
of the Indemnitee’s good faith belief that the standard of conduct necessary for indemnification by the Company as authorized by this Agreement has been met and (ii) a written undertaking by or on behalf of the Indemnitee to repay the
amounts advanced if it should ultimately be determined that the standard of conduct has not been met. The undertaking required by clause (ii) of the immediately preceding sentence shall be an unlimited general obligation of the Indemnitee
but need not be secured and may be accepted without reference to financial ability to make the repayment. 
  

	5.	WITNESS EXPENSES 

 Notwithstanding any other
provision of this Agreement, to the extent that the Indemnitee is, by reason of such Indemnitee’s Corporate Status, a witness for any reason in any Proceeding to which such Indemnitee is not a named defendant or respondent, such Indemnitee
shall be indemnified by the Company against all Expenses actually incurred by or on behalf of such Indemnitee in connection therewith. 
  

	6.	DETERMINATION OF ENTITLEMENT TO AND AUTHORIZATION OF INDEMNIFICATION 

  

	 	(A)	To obtain indemnification under this Agreement, the Indemnitee shall submit to the Company a written request, including therewith such documentation and information reasonably
necessary to determine whether and to what extent the Indemnitee is entitled to indemnification. 

  

	 	(B)	 Indemnification under this Agreement may not be made unless authorized for a specific Proceeding after a determination has been made in accordance with this
Section 6(B) that indemnification of the Indemnitee is permissible in the circumstances because the Indemnitee has met the following standard of conduct: the Company shall indemnify the Indemnitee in accordance with the provisions of paragraph
2 hereof, unless it is established that: (a) the act or omission of the Indemnitee was material to the matter giving rise to the Proceeding and (x) was committed in bad faith or (y) was the result of 

	 	 
active and deliberate dishonesty; (b) the Indemnitee actually received an improper personal benefit in money, property or services; or (c) in the
case of any criminal proceeding, the Indemnitee had reasonable cause to believe that the act or omission was unlawful. Upon receipt by the Company of the Indemnitee’s written request for indemnification pursuant to subparagraph 6(A), a
determination as to whether the applicable standard of conduct has been met shall be made within the period specified in paragraph 6(E): (i) if a Change in Control shall have occurred, by Special Legal Counsel in a written opinion to the
Board of Trustees, a copy of which shall be delivered to the Indemnitee, with Special Legal Counsel selected by the Indemnitee (unless the Indemnitee shall request that such determination be made by the person or persons and in the manner provided
in clause (ii) of this paragraph 6(B), in which event the provisions of such clause (ii) shall apply) (If the Indemnitee selects Special Legal Counsel to make the determination under this clause (i), the Indemnitee shall give prompt
written notice to the Company advising them of the identity of the Special Legal Counsel so selected); or (ii) if a Change in Control shall not have occurred, (A) by the Board of Trustees by a majority vote of a quorum consisting of
trustees not, at the time, parties to the Proceeding, or, if such quorum cannot be obtained, then by a majority vote of a committee of the Board of Trustees consisting solely of two or more trustees not, at the time, parties to such Proceeding and
who were duly designated to act in the matter by a majority vote of the full Board of Trustees in which the designated trustees who are parties may participate, (B) by Special Legal Counsel in a written opinion to the Board of Trustees, a copy
of which shall be delivered to the Indemnitee, with Special Legal Counsel selected by the Board of Trustees or a committee of the Board of Trustees by vote as set forth in subparagraph (ii)(A) of this paragraph 6(B), or, if the requisite quorum of
the full Board of Trustees cannot be obtained therefor and the committee cannot be established, by a majority of the full Board of Trustees in which trustees who are parties to the Proceeding may participate (If the Company selects Special Legal
Counsel to make the determination under this clause (ii), the Company shall give prompt written notice to the Indemnitee advising him or her of the identity of the Special Legal Counsel so selected) or (C) by the shareholders of the
Company. If it is so determined that the Indemnitee is entitled to indemnification, payment to the Indemnitee shall be made within 10 days after such determination. Authorization of indemnification and determination as to reasonableness of
Expenses shall be made in the same manner as the determination that indemnification is permissible. However, if the determination that indemnification is permissible is made by Special Legal Counsel under clause (B) above, authorization of
indemnification and determination as to reasonableness of Expenses shall be made in the manner specified under clause (B) above for the selection of such Special Legal Counsel. 

  

	 	(C)	The Indemnitee shall cooperate with the person or entity making such determination with respect to the Indemnitee’s entitlement to indemnification, including providing upon
reasonable advance request any documentation or information which is not privileged or otherwise protected from disclosure and which is reasonably available to the Indemnitee and reasonably necessary to such determination. Any reasonable costs
or expenses (including reasonable attorneys’ fees and disbursements) incurred by the Indemnitee in so cooperating shall be borne by the Company (irrespective of the determination as to the Indemnitee’s entitlement to indemnification) and
the Company hereby indemnifies and agrees to hold the Indemnitee’s harmless therefrom. 

  

	 	(D)	 In the event the determination of entitlement to indemnification is to be made by Special Legal Counsel pursuant to paragraph 6(B) hereof, the Indemnitee, or the
Company, as the case may be, may, within seven days after such written notice of selection shall have been given, deliver to the Company or to the Indemnitee, as the case may be, a written objection to such selection. Such objection may be
asserted only on the grounds that the Special Legal Counsel so selected does not meet the requirements of “Special Legal Counsel” as defined in paragraph 1 of this Agreement. If such written objection is made, 

	 	 
the Special Legal Counsel so selected may not serve as Special Legal Counsel until a court has determined that such objection is without merit. If,
within 20 days after submission by the Indemnitee of a written request for indemnification pursuant to paragraph 6(A) hereof, no Special Legal Counsel shall have been selected or, if selected, shall have been objected to, either the Company or the
Indemnitee may petition a court for resolution of any objection which shall have been made by the Company or the Indemnitee to the other’s selection of Special Legal Counsel and/or for the appointment as Special Legal Counsel of a person
selected by the court or by such other person as the court shall designate, and the person with respect to whom an objection is so resolved or the person so appointed shall act as Special Legal Counsel under paragraph 6(B) hereof. The Company
shall pay all reasonable fees and expenses of Special Legal Counsel incurred in connection with acting pursuant to paragraph 6(B) hereof, and all reasonable fees and expenses incident to the selection of such Special Legal Counsel pursuant to this
paragraph 6(D). In the event that a determination of entitlement to indemnification is to be made by Special Legal Counsel and such determination shall not have been made and delivered in a written opinion within 90 days after the receipt by
the Company of the Indemnitee’s request in accordance with paragraph 6(A), upon the due commencement of any judicial proceeding in accordance with paragraph 8(A) of this Agreement, Special Legal Counsel shall be discharged and relieved of any
further responsibility in such capacity. 

  

	 	(E)	If the person or entity making the determination whether the Indemnitee is entitled to indemnification shall not have made a determination within 60 days after receipt by the
Company of the request therefor, the requisite determination of entitlement to indemnification shall be deemed to have been made and the Indemnitee shall be entitled to such indemnification, absent: (i) a misstatement by the Indemnitee of
a material fact, or an omission of a material fact necessary to make the Indemnitee’s statement not materially misleading, in connection with the request for indemnification, or (ii) a prohibition of such indemnification under applicable
law. Such 60-day period may be extended for a reasonable time, not to exceed an additional 30 days, if the person or entity making said determination in good faith requires additional time for the obtaining or evaluating of documentation and/or
information relating thereto. The foregoing provisions of this paragraph 6(E) shall not apply: (i) if the determination of entitlement to indemnification is to be made by the shareholders and if within 15 days after receipt by the
Company of the request for such determination the Board of Trustees resolves to submit such determination to the shareholders for consideration at an annual or special meeting thereof to be held within 75 days after such receipt and such
determination is made at such meeting, or (ii) if the determination of entitlement to indemnification is to be made by Special Legal Counsel pursuant to paragraph 6(B) of this Agreement. 

  

	7.	PRESUMPTIONS 

  

	 	(A)	In making a determination with respect to entitlement or authorization of indemnification hereunder, the person or entity making such determination shall presume that the Indemnitee
is entitled to indemnification under this Agreement and the Company shall have the burden of proof to overcome such presumption. 

  

	 	(B)	The termination of any Proceeding by conviction, or upon a plea of nolo contendere or its equivalent, or an entry of an order of probation prior to judgment, creates a rebuttable
presumption that the Indemnitee did not meet the requisite standard of conduct described herein for indemnification. 

  

	8.	REMEDIES 

  

	 	(A)	 In the event that: (i) a determination is made in accordance with the provisions of paragraph 6 that the Indemnitee is not entitled to indemnification
under this Agreement, 

	 	 
or (ii) advancement of reasonable Expenses is not timely made pursuant to this Agreement, or (iii) payment of indemnification due the Indemnitee
under this Agreement is not timely made, the Indemnitee shall be entitled to an adjudication in an appropriate court of competent jurisdiction of such Indemnitee’s entitlement to such indemnification or advancement of Expenses.

  

	 	(B)	In the event that a determination shall have been made pursuant to paragraph 6 of this Agreement that the Indemnitee is not entitled to indemnification, any judicial proceeding
commenced pursuant to this paragraph 8 shall be conducted in all respects as a de novo trial on the merits. The fact that a determination had been made earlier pursuant to paragraph 6 of this Agreement that the Indemnitee was not entitled to
indemnification shall not be taken into account in any judicial proceeding commenced pursuant to this paragraph 8 and the Indemnitee shall not be prejudiced in any way by reason of that adverse determination. In any judicial proceeding
commenced pursuant to this paragraph 8, the Company shall have the burden of proving that the Indemnitee is not entitled to indemnification or advancement of Expenses, as the case may be. 

  

	 	(C)	If a determination shall have been made or deemed to have been made pursuant to this Agreement that the Indemnitee is entitled to indemnification, the Company shall be bound by such
determination in any judicial proceeding commenced pursuant to this paragraph 8, absent: (i) a misstatement by the Indemnitee of a material fact, or an omission of a material fact necessary to make the Indemnitee’s statement not
materially misleading, in connection with the request for indemnification, or (ii) a prohibition of such indemnification under applicable law. 

  

	 	(D)	The Company shall be precluded from asserting in any judicial proceeding commenced pursuant to this paragraph 8 that the procedures and presumptions of this Agreement are not valid,
binding and enforceable and shall stipulate in any such court that the Company is bound by all the provisions of this Agreement. 

  

	 	(E)	In the event that the Indemnitee, pursuant to this paragraph 8, seeks a judicial adjudication of such Indemnitee’s rights under, or to recover damages for breach of, this
Agreement, if successful in whole or in part, the Indemnitee shall be entitled to recover from the Company, and shall be indemnified by the Company against, any and all reasonable Expenses actually incurred by such Indemnitee in such judicial
adjudication. 

  

	9.	NOTIFICATION AND DEFENSE OF CLAIMS 

 The Indemnitee
agrees promptly to notify the Company in writing upon being served with any summons, citation, subpoena, complaint, indictment, information, or other document relating to any Proceeding or matter which may be subject to indemnification or
advancement of Expenses covered hereunder, but the failure so to notify the Company will not relieve the Company from any liability that the Company may have to Indemnitee under this Agreement unless the Company is materially prejudiced
thereby. With respect to any such Proceeding as to which Indemnitee notifies the Company of the commencement thereof: 
  

	 	(A)	The Company will be entitled to participate therein at its own expense. 

  

	 	(B)	 Except as otherwise provided below, the Company will be entitled to assume the defense thereof, with counsel reasonably satisfactory to Indemnitee. After
notice from the Company to Indemnitee of the Company’s election so to assume the defense thereof, the Company will not be liable to Indemnitee under this Agreement for any legal or other expenses subsequently incurred by Indemnitee in
connection with the defense thereof other than reasonable costs of investigation or as otherwise provided below. Indemnitee shall have the right to employ Indemnitee’s own counsel in such Proceeding, but the fees and disbursements of such
counsel incurred after notice from the Company of the 

	 	 
Company’s assumption of the defense thereof shall be at the expense of Indemnitee unless (a) the employment by counsel by Indemnitee has been
authorized by the Company, (b) the Indemnitee shall have reasonably concluded that there may be a conflict of interest between the Company and the Indemnitee in the conduct of the defense of such action, (c) such Proceeding seeks penalties
or other relief against the Indemnitee with respect to which the Company could not provide monetary indemnification to the Indemnitee (such as injunctive relief or incarceration) or (d) the Company shall not in fact have employed counsel to
assume the defense of such action, in each of which cases the fees and disbursements of counsel shall be at the expense of the Company. The Company shall not be entitled to assume the defense of any Proceeding brought by or on behalf of the
Company, or as to which Indemnitee shall have reached the conclusion specified in clause (b) above, or which involves penalties or other relief against Indemnitee of the type referred to in clause (c) above. 

 

	 	(C)	The Company shall not be liable to indemnify Indemnitee under this Agreement for any amounts paid in settlement of any action or claim effected without the Company’s written
consent. The Company shall not settle any action or claim in any manner that would impose any penalty or limitation on Indemnitee without Indemnitee’s written consent. Neither the Company nor Indemnitee will unreasonably withhold or
delay consent to any proposed settlement. 

  

	10.	NON-EXCLUSIVITY; SURVIVAL OF RIGHTS; INSURANCE SUBROGATION 

  

	 	(A)	The rights of indemnification and to receive advancement of reasonable Expenses as provided by this Agreement shall not be deemed exclusive of any other rights to which the
Indemnitee may at any time be entitled under applicable law, the Declaration of Trust, the Bylaws, any other agreement, a vote of shareholders, a resolution of the Board of Trustees or otherwise. No amendment, alteration or repeal of this
Agreement or any provision hereof shall be effective as to the Indemnitee with respect to any action taken or omitted by the Indemnitee as a member of the Board of Trustees prior to such amendment, alteration or repeal. 

  

	 	(B)	To the extent that the Company maintains an insurance policy or policies providing liability insurance for trustees and officers of the Company, the Indemnitee shall be covered by
such policy or policies in accordance with its or their terms to the maximum extent of the coverage available and upon any “Change in Control” the Company shall use commercially reasonable efforts to obtain or arrange for continuation
and/or “tail” coverage for the Indemnitee to the maximum extent obtainable at such time. 

  

	 	(C)	In the event of any payment under this Agreement, the Company shall be subrogated to the extent of such payment to all of the rights of recovery of the Indemnitee, who shall execute
all papers required and take all actions necessary to secure such rights, including execution of such documents as are necessary to enable the Company to bring suit to enforce such rights. 

  

	 	(D)	The Company shall not be liable under this Agreement to make any payment of amounts otherwise indemnifiable hereunder if and to the extent that the Indemnitee has otherwise actually
received such payment under any insurance policy, contract, agreement, or otherwise. 

  

	11.	CONTINUATION OF INDEMNITY 

  

	 	(A)	 All agreements and obligations of the Company contained herein shall continue during the period the Indemnitee is an officer or a member of the Board of Trustees of
the Company and shall continue thereafter so long as the Indemnitee shall be subject to any threatened, pending or completed Proceeding by reason of such Indemnitee’s Corporate 

	 	 
Status and during the period of statute of limitations for any act or omission occurring during the Indemnitee’s term of Corporate Status. This
Agreement shall be binding upon the Company and its respective successors and assigns and shall inure to the benefit of the Indemnitee and such Indemnitee’s heirs, executors and administrators. 

  

	 	(B)	The Company shall require and cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all, substantially all or a substantial part, of
the business and/or assets of the Company, by written agreement in form and substance reasonably satisfactory to the Indemnitee, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would
be required to perform if no such succession had taken place. 

  

	12.	SEVERABILITY 

 If any provision or provisions of
this Agreement shall be held to be invalid, illegal, or unenforceable for any reason whatsoever, (i) the validity, legality, and enforceability of the remaining provisions of this Agreement (including, without limitation, each portion of any
paragraph of this Agreement containing any such provision held to be invalid, illegal, or unenforceable, that is not itself invalid, illegal, or unenforceable) shall not in any way be affected or impaired thereby, and (ii) to the fullest extent
possible, the provisions of this Agreement (including, without limitation, each portion of any paragraph of this Agreement containing any such provision held to be invalid, illegal, or unenforceable, that is not itself invalid, illegal, or
unenforceable) shall be construed so as to give effect to the intent manifested by the provisions held invalid, illegal, or unenforceable. 
  

	13.	EXCEPTION TO RIGHT OF INDEMNIFICATION OR ADVANCEMENT OF EXPENSES 

 Notwithstanding any other provisions of this Agreement, the Indemnitee shall not be entitled to indemnification or advancement of reasonable Expenses under this Agreement with respect to any Proceeding initiated by
such Indemnitee against the Company other than a proceeding commenced pursuant to paragraph 8. 
  

	14.	NOTICE TO THE COMPANY SHAREHOLDERS 

 Any
indemnification of, or advancement of reasonable Expenses to, an Indemnitee in accordance with this Agreement, if arising out of a Proceeding by or in the right of the Company, shall be reported in writing to the shareholders of the Company with the
notice of the next Company shareholders’ meeting or prior to the meeting. 
  

	15.	HEADINGS 

 The headings of the paragraphs of this
Agreement are inserted for convenience only and shall not be deemed to constitute part of this Agreement or to affect the construction thereof. 
  

	16.	MODIFICATION AND WAIVER 

 No supplement,
modification, or amendment of this Agreement shall be binding unless executed in writing by each of the parties hereto. No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions
hereof (whether or not similar) nor shall such waiver constitute a continuing waiver. 
  

	17.	NOTICES 

 All notices, requests, demands, and other
communications hereunder shall be in writing and shall be deemed to have been duly given if (i) delivered by hand and receipted for by the party to whom said notice or other communication shall have been directed, or (ii) mailed by
certified or registered mail with postage prepaid, on the third business day after the date on which it is so mailed, if so delivered or mailed, as the case may be, to the following addresses: 
 If to the Indemnitee, to the address set forth in the records of the Company. 

 If to the Company, to: 
 Washington Real Estate Investment Trust 
 6110 Executive Boulevard 
 Suite 800 
 Rockville, Maryland 20850

 Attention: General Counsel 
 or to such other
address as may have been furnished to the Indemnitee by the Company or to the Company by the Indemnitee, as the case may be. 
  

	18.	GOVERNING LAW 

 The parties agree that this
Agreement shall be governed by, and construed and enforced in accordance with, the laws of the State of Maryland, without application of the conflict of laws principles thereof. 
  

	19.	COUNTERPARTS 

 This Agreement may be executed in two
or more counterparts, each of which shall be deemed an original, but all of which together constitute an agreement binding on all of the parties hereto. 
 (Remainder of page intentionally left blank.) 

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

			
	WASHINGTON REAL ESTATE INVESTMENT TRUST
		
	By:	 	  

	Name:	 	
	Title:	 	
	
	INDEMNITEE:
	
	  

	Name:Enbridge Inc. Incentive Stock Option Plan (2002)

 Exhibit 10.2 
 ENBRIDGE INC. 
 INCENTIVE STOCK OPTION PLAN (2002) 
  

	1.	PURPOSE 

 The purpose of this Incentive Stock Option
Plan (the “Plan”) is to provide employees of the Corporation and its Subsidiaries the opportunity to acquire or enjoy the benefit of an increased proprietary interest in the Corporation in a manner which is consistent with and will
advance the interests of the Corporation and its Subsidiaries by (a) motivating and rewarding employees in relation to the long-term performance and growth of the Corporation and the total return to shareholders, and thereby (b) attracting
and retaining the best employees. 
  

	2.	DEFINED TERMS 

 As used herein, the following terms
shall have the following meanings, respectively: 
 “Board” means the Board of Directors of the Corporation (or, if
established and duly authorized to act, the Executive Committee of the Board of Directors of the Corporation); 
 “Code”
means the United States Internal Revenue Code of 1986, as amended; 
 “Corporation” means Enbridge Inc., and includes any
successor corporation thereto; 
 “Committee” means the Human Resources & Compensation Committee of the Board,
established and duly authorized to act in accordance with the by-laws of the Corporation; 
 “Directors’ Plan” means the
Enbridge Inc. Directors’ Compensation Plan (2002), as the same may be amended or varied from time to time; 
 “Fair Market
Value” means, with respect to any date, the last board lot sale price of common shares of the Corporation on The Toronto Stock Exchange on the last Trading Day immediately prior to such date; 
 “Insider” means: 
  

	 	(a)	an insider as defined in the Securities Act (Alberta), other than a person who falls within that definition solely by virtue of being a director or senior officer of a
Subsidiary; and 

	 	(b)	an associate, as defined in the Securities Act (Alberta), of any person who is an insider by virtue of (a) above; 

 “Participant” means any employee, including an officer, of the Corporation or its Subsidiaries who has been designated by the Committee
to receive and be granted options or stock option appreciation rights in accordance with paragraph 5; 
 “Plan” means
the Enbridge Inc. Incentive Stock Option Plan (2002), as embodied herein and as the same may be amended or varied from time to time; 
 “Stock Option Plans” means the Plan and the Directors’ Plan; 
 “Subsidiary” means:

  

	 	(a)	any corporation that is a subsidiary of the Corporation (as such term is defined in subsection 2(5) of the Canada Business Corporations Act, as such provision is from time to
time amended, varied or re-enacted); 

  

	 	(b)	any partnership or limited partnership that is controlled by the Corporation (the Corporation will be deemed to control a partnership or limited partnership if the Corporation
possesses, directly or indirectly, the power to direct or cause the direction of the management or policies of such partnership or limited partnership whether through the ownership of voting securities, by contract or otherwise); and

  

	 	(c)	subject to regulatory approval, any corporation, partnership, limited partnership, trust, limited liability company or other form of business entity that the Committee determines
ought to be treated as a Subsidiary for purposes of the Plan, provided that the Committee shall have the sole discretion to determine that any such entity has ceased to be a Subsidiary for purposes of the Plan; and 

 “Trading Day” means any day, other than a Saturday or Sunday, on which The Toronto Stock Exchange is open for trading. 
  

	3.	ADMINISTRATION 

 The Committee will administer the
Plan in its discretion, subject only to the specific approval right reserved to the Board in paragraphs 5, 8, 9 and 11 herein. The Committee shall be composed of three or more members of the Board not eligible to participate in the Plan. The
Committee shall have the power to interpret the provisions of the Plan and to make regulations and formulate administrative provisions for its implementation, and to make such changes in the regulations and administrative provisions as, from time to
time, the Committee deems proper and in the best interests of the Corporation. Such regulations and provisions may include such terms and conditions relating to the grant or 

  

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exercise of options or stock appreciation rights or to resale of shares purchased upon exercise of options as the Committee may deem necessary or desirable
in connection with compliance with exemption or other provisions of securities laws of any jurisdiction. 
  

	4.	SHARES 

 The shares subject to the options and other
provisions of the Plan shall be authorized and unissued common shares of the Corporation. The total number of shares reserved to be issued under the Plan shall not exceed in the aggregate 15,000,000, subject to the adjustment provisions of paragraph
9. Shares subject to options which are terminated, cancelled, or expire prior to exercise shall be available for the grant of further options hereunder. Shares represented by an unexercised option surrendered upon the exercise of stock appreciation
rights, but not shares issued in payment of any such rights, shall be deducted from the aggregate reserve and shall not be available for the grant of further options hereunder. 
  

	5.	ELIGIBLE EMPLOYEES 

 The Committee, subject to
approval by the Board, shall from time to time designate those full-time key employees, including officers, of the Corporation or its Subsidiaries to whom options and stock appreciation rights shall be granted, and shall determine the extent and
terms of their participation, subject to the following: 
  

	 	(a)	the total number of shares reserved for issuance to any one Participant pursuant to options granted pursuant to the Plan (together with options granted pursuant to any other share
compensation arrangements) shall not exceed in the aggregate 5% of the number of common shares of the Corporation outstanding at the time of reservation; 

  

	 	(b)	the total number of shares reserved for issuance to Insiders pursuant to the Stock Option Plans (and any other share compensation arrangements) shall not exceed 10% of the number of
common shares of the Corporation outstanding at the time of reservation; 

  

	 	(c)	the total number of shares issued to Insiders pursuant to the Stock Option Plans (and any other share compensation arrangements) within any one-year period shall not exceed 10% of
the number of common shares of the Corporation outstanding at the time of issuance (excluding any other shares issued under the Stock Option Plans (or any other share compensation arrangements) during such one-year period); and

  

	 	(d)	 the total number of shares issued to any one Insider and such Insider’s associates (as defined in the Securities Act (Alberta)) pursuant to the Stock
Option Plans (and any other share compensation arrangements) 

  

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within any one-year period shall not exceed 5% of the number of common shares outstanding at the time of issuance (excluding any other shares issued under
the Stock Option Plans (or any other share compensation arrangements) during such one-year period). 

 For the purposes of
(b), (c) and (d) above, any entitlement to acquire shares granted pursuant to the Plan prior to the Participant becoming an Insider are to be excluded from the calculation. 
 Directors who are not full-time employees of the Corporation, or its Subsidiaries, shall not be eligible to become Participants. 
 A designated employee shall have the right not to participate in the Plan, and any decision not to participate shall not affect his or her employment with
the Corporation. Participation in the Plan does not confer upon the Participant any right to continued employment with the Corporation, or its Subsidiaries. 
  

	6.	TERMS AND CONDITIONS OF OPTIONS 

  

	 	(a)	Term 

 The term during which an option will be
exercisable shall be fixed at the time of grant, but in no case shall a term exceed ten years, and each option shall be subject to earlier termination, as provided in paragraphs 6(f), 6(g) and 6(h). 
  

	 	(b)	Exercise 

 Unless the Committee otherwise decides,
an option shall become exercisable only after one year of continued employment immediately following the day the option is granted and only then in such instalments as the Committee may determine. A Participant may exercise the exercisable
instalments of his or her option in whole or in part at any time and from time to time during the option term. 
  

	 	(c)	Price 

 The price at which shares will be issued to
a Participant pursuant to an option (the “Option Price”) shall be determined at the time of option grant, but shall in no instance be less than 100% of the Fair Market Value on the day of grant. Notwithstanding the foregoing, in the
event that an option is awarded at a time when a corporate trading blackout memo has been issued and is in effect (a “Trading Blackout”), the effective date of the option shall be no earlier than the fourth Trading Day following the
date of the termination of the Trading Blackout and the Option Price shall in no instance be less than the weighted average trading price of the common shares of the Corporation on The Toronto Stock Exchange for the three Trading Days immediately
prior to the effective date of the option. 
  

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	 	(d)	Payment 

 Participants shall be required to make
payment in full for any shares purchased upon the exercise, in whole or in part, of any option granted under the Plan and no shares shall be issued until full payment has been made. 
  

	 	(e)	Transferability 

 Options are not transferable or
assignable other than by will or according to the laws of descent and distribution. 
  

	 	(f)	Termination of Employment (Retirement or Disability) 

 Unless the Committee otherwise decides, in the event that a Participant, before completely exercising his or her option, terminates his or her employment with the Corporation (or a Subsidiary) due to normal or early retirement under the
Retirement Plan of the Corporation (or a Subsidiary), disability or under conditions acceptable to the Committee, unexercised instalments of the option that are exercisable on the date of termination of employment remain exercisable, unvested
instalments of the option continue to vest and the option remains exercisable until the third anniversary of the date of termination of employment or the remainder of the option term, whichever is the shorter period, and the option (in its entirety)
shall terminate and be of no further force or effect whatsoever at the end of such period. 
  

	 	(g)	Termination of Employment (Death) 

 Unless the
Committee otherwise decides, in the event that a Participant, before completely exercising his or her option, terminates his or her employment with the Corporation (or a Subsidiary) due to death, unvested instalments of that option fully vest on the
date of death and all unexercised options remain exercisable until the first anniversary of the date of death or the remainder of the option term, whichever is the shorter period, and the option (in its entirety) shall terminate and be of no further
force or effect whatsoever at the end of such period. 
  

	 	(h)	Termination of Employment (Other) 

 Unless the
Committee otherwise decides, in the event that a Participant, before completely exercising his or her option, terminates his or her employment with the Corporation (or a Subsidiary) for any reason (other 

  

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than under the circumstances set out in paragraphs 6(f) and 6(g) above), only unexercised instalments of that option, exercisable on the date employment
terminated, remain exercisable until the thirtieth (30th) day following the
date of the Participant’s termination of employment under this paragraph or the remainder of the option term, whichever is the shorter period, and the option (in its entirety) shall terminate and be of no further force or effect whatsoever at
the end of such period. Notwithstanding the foregoing, the Committee shall have the discretion to extend the 30 day period to a period not exceeding the third anniversary of the date of termination of employment under this paragraph, provided that
in no circumstances will any such extension result in the exercise period being extended beyond the end of the option term. 
 For greater
certainty, employment shall be deemed not to have terminated when a Participant terminates employment with the Corporation in order to accept employment with a Subsidiary or terminates employment with a Subsidiary in order to accept employment with
the Corporation. Employment shall be deemed to have terminated if a Subsidiary which employs the Participant ceases to be such. 
  

	7.	TERMS AND CONDITIONS OF UNITED STATES INCENTIVE STOCK OPTIONS 

 Designated employees of the Corporation’s United States Subsidiary(ies) may be granted “incentive stock options” within the meaning of Section 422 of the Code (“United States Incentive
Stock Options”). 
 No United States Incentive Stock Options shall be granted to any participant, if as a result of such grant, the
aggregate fair market value (as of the time the option is granted) of the shares covered by all United States Incentive Stock Options granted under this Plan and any other plan of the Corporation or any Subsidiary to the Participant, which are or
which will become exercisable for the first time by the participant in a single calendar year, exceeds US$100,000 or such amount as shall be specified in Section 422 of the Code. 
 The exercise price of a United States Incentive Stock Option shall be not less than 100% of Fair Market Value on the day of grant. 
 The Committee may determine terms and conditions, in accordance with Section 422 of the Code, under which United States Incentive Stock Options or
related stock appreciation rights may be exercised upon the termination of employment of a Participant. In all other respects, United States Incentive Stock Options and related stock appreciation rights shall be subject to the terms and conditions
of options as set forth in paragraph 6. 
  

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	8.	TERMS AND CONDITIONS OF STOCK APPRECIATION RIGHTS 

 Stock appreciation rights may be granted in connection with all options granted under the Plan, either when the underlying option is granted or at any other time prior to the expiry or exercise of such option. Exercise of a stock
appreciation right shall result in cancellation of a corresponding number of shares of the underlying option. Exercise of an option (or part thereof) or settlement of an option in accordance with Section 10 shall result in cancellation of a
corresponding number of stock appreciation rights. All stock appreciation rights shall be subject to the following terms and conditions, and such additional terms, conditions and limits as the Committee with Board approval may from time to time
determine. 
  

	 	(a)	Extent of Grant 

 The number of shares covered by a
grant of stock appreciation rights shall not exceed the number of shares which the Participant may purchase upon the exercise of an unexercised option or parts thereof held by the Participant. 
  

	 	(b)	Limitations on Exercise 

 Stock appreciation rights
shall be exercisable at such times and in such amounts as the options with which such right are connected are exercisable, provided that exercise of a stock appreciation right shall be made only during periods set by the Committee with Board
approval. 
  

	 	(c)	Entitlement 

 Stock appreciation rights shall
entitle only the holder to surrender to the Corporation all or part of the unexercised, but exercisable, option in connection with which such rights were granted and to receive from the Corporation in exchange, the payment of an amount equal to the
amount, if any, by which the aggregate fair market value of the shares covered by the surrendered option or portion thereof at the exercise date (calculated as the weighted average trading price of common shares of the Corporation on The Toronto
Stock Exchange for the five Trading Days prior to the date on which such payment is made) exceeds the aggregate option exercise price of those shares. Such payment may not exceed 100% of the exercise price of the related option or portion thereof
which is being surrendered. Payment of such amount may be made and satisfied by the Corporation in such of the following forms as the Committee may determine: 
  

	 	(i)	in common shares of the Corporation (valued at the weighted average trading price of common shares of the Corporation on The Toronto Stock Exchange for the five Trading Days prior
to the date on which such payment is made); or 

  

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	 	(ii)	in cash; or 

  

	 	(iii)	partly in shares so valued and partly in cash. 

  

	 	(d)	Transferability 

 Stock appreciation rights are not
transferable or assignable other than by will or according to the laws of descent and distribution. 
  

	9.	ADJUSTMENTS 

 In the event that the outstanding
common shares of the Corporation shall be increased or decreased, or changed into, or exchanged for a different number or kind of shares or other securities of the Corporation or another corporation, whether through a stock dividend, stock split,
consolidation, recapitalization, amalgamation, reorganization, arrangement or other transaction effected without receipt of consideration, the Committee or the Board may make appropriate adjustment in the number or kind of shares or securities
available for options or stock appreciation rights pursuant to the Plan, and as regards options or stock appreciation rights previously granted or to be granted pursuant to the Plan, in the number or kind of shares or securities and the purchase
price therefor and the manner in which instalments of the options or stock appreciation rights become exercisable. 
 The appropriate
adjustments in the number of shares optioned, the option price per share and the period during which each option may be exercised may be made by the Board in its discretion and in order to give effect to the adjustments in the number of shares of
the Corporation resulting from the implementation and operation of the Shareholder Rights Plan Agreement dated as of November 9, 1995 between the Corporation and The R-M Trust Company, as amended, restated or revised from time to time.

  

	10.	EFFECT OF REORGANIZATION 

 In the event of any
take-over bid or any proposal, offer or agreement for a merger, consolidation, amalgamation, arrangement, recapitalization, liquidation, dissolution, reorganization into a royalty trust or income fund or similar transaction or other business
combination in which the Corporation is not the surviving or continuing corporation (a “Reorganization”), all options and stock appreciation rights granted hereunder and outstanding on the date of such Reorganization, shall be
assumed by the surviving or continuing corporation, provided that the Committee or the Board may make appropriate adjustment in the manner in which instalments of the options or stock appreciation rights 

  

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become exercisable prior to such assumption. If, in the event of any such Reorganization, provision for such assumption satisfactory to a Participant is not
made by the surviving or continuing corporation, each Participant shall have distributed to him or her within thirty days after the Reorganization in full satisfaction in the case of an unexpired option, or part thereof, whether or not exercisable,
cash representing the excess, if any, of the Fair Market Value on the third Trading Day immediately preceding the closing date of such Reorganization over the exercise price of such option (less applicable tax withholdings). 
  

	11.	AMENDMENT, ETC. 

 The Board may revise, suspend or
discontinue the Plan in whole or in part. No such revision, suspension, or discontinuance shall alter or impair the rights of a Participant in respect of options or stock appreciation rights previously granted under the Plan, without the consent of
a Participant. Any amendment to the Plan or to the terms of any options or stock appreciation rights granted under the Plan are subject to regulatory approval. 
 Subject to the provisions of paragraph 9, the Board shall not change the minimum exercise price at which options or stock appreciation rights will be granted, or extend the maximum term during which an option or stock
appreciation right may be exercised. 
  

	12.	EFFECTIVE DATE 

 The Plan shall take effect on
May 3, 2002, being the date of the 2002 Annual Meeting of shareholders of the Corporation, if approved by the shareholders at such meeting. On the Plan taking effect, the Incentive Stock Option Plan (1999) (the “Prior
Plan”) shall be discontinued and all unexercised options issued under the Prior Plan shall then be considered to be issued and outstanding under the Plan and all shares reserved for issuance under the Prior Plan that have not been issued
shall be considered to be reserved for issuance under the Plan. 
  

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