Document:

Form of 4.95% Senior Notes due October 1, 2020

 Exhibit 4.1 

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation (“DTC”), to the
Trust (as defined below) or its agent for registration of transfer, exchange, or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any
payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner
hereof, Cede & Co., has an interest herein. 
  

			
	REGISTERED	  	PRINCIPAL AMOUNT: $250,000,000
	No.: 1	  	

 CUSIP NUMBER: 939653 AL5 

WASHINGTON REAL ESTATE INVESTMENT TRUST 

4.95% SENIOR NOTE DUE OCTOBER 1, 2020 

WASHINGTON REAL ESTATE INVESTMENT TRUST, a Maryland real estate investment trust (hereinafter called the “Trust,” which term
shall include any successor trust or corporation under the Indenture hereinafter referred to), for value received, hereby promises to pay to Cede & Co., or registered assigns, upon presentation, the principal sum of TWO HUNDRED FIFTY MILLION
DOLLARS ($250,000,000) on October 1, 2020, and to pay interest on the outstanding principal amount thereon from September 30, 2010, or from the most recent Interest Payment Date to which interest has been paid or duly provided for, semi-annually in
arrears on April 1 and October 1 in each year, commencing April 1, 2011, at the rate of 4.95% per annum, until the entire principal amount hereof is paid or made available for payment. The interest so payable, and punctually paid or duly provided
for on any Interest Payment Date will, as provided in the Indenture, be paid to the Person in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on the Regular Record Date for such interest which shall be
15 calendar days (whether or not a Business Day) next preceding such Interest Payment Date. Any such interest not so punctually paid or duly provided for shall forthwith cease to be payable to the Holder on such Regular Record Date, and may either
be paid to the Person in whose name this Note (or one or more Predecessor Notes) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to
Holders of Notes of this series not more than 15 days and not less than 10 days prior to such Special Record Date, or may be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the
Notes may be listed, and upon such notice as may be required by such exchange, all as more fully provided in the Indenture. Payment of the principal of, Make Whole Amount, if any, on, and interest on this Note will be made at the office or agency of
the Trust maintained for that purpose in the City of New York, State of New York, or elsewhere as provided in the Indenture, in such coin or currency of the United States of America as at the time of payment is legal tender for payment of public and
private debts; provided, however, that at the option of the Trust payment of interest may be made by (i) check mailed to the address of the Person entitled thereto 

 
as such address shall appear in the Security Register kept for the Notes pursuant to Section 305 of the Indenture (the “Note Register”) or (ii) transfer to an account of the Person
entitled thereto located inside the United States. 
 This Note is one of a duly authorized issue of securities of the Trust
(herein called the “Notes”), issued and to be issued in one or more series under an Indenture, dated as of August 1, 1996, as amended (herein called the “Indenture”), between the Trust and The Bank of New York Mellon Trust
Company, N.A. (successor to The First National Bank of Chicago) (herein called the “Trustee,” which term includes any successor trustee under the Indenture with respect to the Notes), to which Indenture and all indentures supplemental
thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Trust, the Trustee and the Holders of the Notes and of the terms upon which the Notes are, and are to be,
authenticated and delivered. This Note is one of the series designated as the “4.95% Senior Notes due October 1, 2020”, limited in aggregate principal amount to $250,000,000. 

The Notes may be redeemed at any time at the option of the Trust, in whole or in part, upon notice of not more than 60 nor less than 30
days prior to the Redemption Date. Prior to April 1, 2020, the redemption price shall equal to the sum of (i) the principal amount of the Notes being redeemed plus accrued interest thereon to the Redemption Date and (ii) the Make-Whole Amount, if
any, with respect to such Notes. On or after April 1, 2020, the redemption price shall equal the principal amount of the Notes being redeemed plus accrued interest thereon to the Redemption Date. 

The following definitions apply with respect to any redemption or accelerated payment of the Notes: 

“Make-Whole Amount” means, in connection with any optional redemption or accelerated payment of any Notes, the
excess, if any, of (a) the aggregate present value as of the date of such redemption or accelerated payment of each dollar of principal being redeemed or paid and the amount of interest (exclusive of interest accrued to the date of redemption or
accelerated payment) that would have been payable in respect of each such dollar if such redemption or accelerated payment had not been made, determined by discounting, on a semi-annual basis, such principal and interest at the Reinvestment Rate
(determined on the third Business Day preceding the date such notice of redemption is given or declaration of acceleration is made) from the respective dates on which such principal and interest would have been payable if such redemption or
accelerated payment had not been made, over (b) the aggregate principal amount of the Notes being redeemed or paid. 

“Reinvestment Rate” means 0.40% plus the arithmetic mean of the yields under the heading “Week Ending”
published in the most recent Statistical Release under the caption “Treasury Constant Maturities” for the maturity (rounded to the nearest month) corresponding to the remaining life to maturity of the Note, as of the payment date of the
principal of the Notes being redeemed or paid. If no maturity exactly corresponds to such maturity, yields for the two published maturities most closely corresponding to such maturity shall be calculated pursuant to the immediately preceding
sentence and the 
  

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Reinvestment Rate shall be interpolated or extrapolated from such yields on a straight-line basis, rounding in each of such relevant periods to the nearest month. For the purposes of calculating
the Reinvestment Rate, the most recent Statistical Release published prior to the date of determination of the Make-Whole Amount shall be used. 

“Statistical Release” means the statistical release designated “H.15(519)” or any successor
publication which is published weekly by the Federal Reserve System and which establishes yields on actively traded United States government securities adjusted to constant maturities, or, if such statistical release is not published at the time of
any determination of the Make-Whole Amount, then such other reasonably comparable index which shall be designated by the Trust. 

The Indenture contains provisions for defeasance at any time of (a) the entire indebtedness of the Trust on this Note and (b) certain
restrictive covenants and the related defaults and Events of Default applicable to the Trust, in each case, upon compliance by the Trust with certain conditions set forth in the Indenture, which provisions apply to this Note. 

If an Event of Default with respect to the Notes of this series shall occur and be continuing, the principal of, and the Make-Whole
Amount, if any, on, the Notes of this series may be declared due and payable in the manner and with the effect provided in the Indenture. 

As provided in and subject to the provisions of the Indenture, the Holder of this Note shall not have the right to institute any
proceeding with respect to the Indenture or for the appointment of a receiver or trustee or for any other remedy thereunder, unless such Holder shall have previously given the Trustee written notice of a continuing Event of Default with respect to
the Notes of this series, the Holders of not less than 25% in principal amount of the Notes of this series at the time Outstanding shall have made written request to the Trustee to institute proceedings in respect of such Event of Default as Trustee
and offered the Trustee reasonable indemnity and the Trustee shall not have received from the Holders of a majority in principal amount of the Notes of this series at the time Outstanding a direction inconsistent with such request, and shall have
failed to institute any such proceeding, for 60 days after receipt of such notice, request and offer of indemnity. The foregoing shall not apply to any suit instituted by the Holder of this Note for the enforcement of any payment of principal hereof
or any interest on or after the respective due dates expressed herein. 
 The Indenture permits, with certain exceptions as
therein provided, the amendment thereof and the modification of the rights and obligations of the Trust and the rights of the Holders of the Notes under the Indenture at any time by the Trust and the Trustee with the consent of the Holders of not
less than a majority in principal amount of the Outstanding Notes. The Indenture also contains provisions permitting the Holders of specified percentages in principal amount of the Notes at the time Outstanding, on behalf of the Holders of all
Notes, to waive compliance by the Trust with certain provisions of the Indenture and certain past defaults under the Indenture and their consequences. Any such consent or waiver by the Holder of this Note shall be conclusive and binding upon such
Holder and upon all future Holders of this Note and of any Note issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Note. 

 

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 No reference herein to the Indenture and no provision of this Note or of the Indenture shall
alter or impair the obligation of the Trust, which is absolute and unconditional, to pay the principal of, Make-Whole Amount, if any, on, and interest on this Note at the times, place and rate, and in the coin or currency, herein prescribed.

 As provided in the Indenture and subject to certain limitations therein set forth, the transfer of this Note is registrable
in the Note Register, upon surrender of this Note for registration of transfer at the office or agency of the Trust in any Place of Payment where the principal of, Make-Whole Amount, if any, on, and interest on this Note are payable, duly endorsed
by, or accompanied by a written instrument of transfer in form satisfactory to the Trust and the Security Registrar for the Notes (the “Note Registrar”) duly executed by, the Holder hereof or his attorney duly authorized in writing, and
thereupon one or more new Notes of this series, of authorized denominations and for the same aggregate principal amount, will be issued to the designated transferee or transferees. 

The Notes of this series are issuable only in registered form without coupons in denominations of $1,000 and any integral multiple
thereof. As provided in the Indenture and subject to certain limitations therein set forth, Notes of this series are exchangeable for a like aggregate principal amount of Notes of this series of a different authorized denomination, as requested by
the Holder surrendering the same. 
 No service charge shall be made for any such registration of transfer or exchange, but the
Trust may require payment of a sum sufficient to cover any tax or other governmental charge payable in connection therewith. 

Prior to due presentment of this Note for registration of transfer, the Trust, the Trustee and any agent of the Trust or the Trustee may
treat the Person in whose name this Note is registered as the owner hereof for all purposes, whether or not this Note be overdue, and neither the Trust, the Trustee nor any such agent shall be affected by notice to the contrary. 

The obligations of the Trust under the Indenture and this Note and all documents delivered in the name of the Trust in connection
herewith and therewith do not and shall not constitute personal obligations of the trustees, officers, employees, agents or shareholders of the Trust or any of them, and shall not involve any claim against or personal liability on the part of any of
them, and all persons including the Trustee shall look solely to the assets of the Trust for the payment of any claim thereunder or for the performance thereof and shall not seek recourse against such trustees, officers, employees, agents or
shareholders of the Trust or any of them or any of their personal assets for such satisfaction. The performance of the obligations of the Trust under the Indenture and this Note and all documents delivered in the name of the Trust in connection
therewith shall not be deemed a waiver of any rights or powers of the Trust, trustees or shareholders under the Trust’s Declaration of Trust. 

All terms used in this Note which are defined in the Indenture shall have the meanings assigned to them in the Indenture. 

 

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 THE INDENTURE AND THE NOTES, INCLUDING THIS NOTE, SHALL BE GOVERNED BY AND CONSTRUED IN
ACCORDANCE WITH THE LAW OF THE STATE OF NEW YORK. 
 Pursuant to a recommendation promulgated by the Committee on Uniform
Security Identification Procedures, the Trust has caused “CUSIP” numbers to be printed on the Notes as a convenience to the Holders of the Notes. No representation is made as to the correctness or accuracy of such CUSIP numbers as printed
on the Notes, and reliance may be placed only on the other identification numbers printed hereon. 
 Unless the certificate of
authentication hereon has been executed by or on behalf of the Trustee by manual signature, this Note shall not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. 

IN WITNESS WHEREOF, the Trust has caused this instrument to be duly executed this September 30, 2010. 

 

					
	WASHINGTON REAL ESTATE INVESTMENT TRUST
			
		 	By:	 	 /s/ George McKenzie

		 	Name:	 	George McKenzie
		 	Title:	 	President and Chief Executive Officer

 Attest:

  

			
	By:	 	 /s/ Laura M. Franklin

	Name:	 	Laura M. Franklin
	Title:	 	Corporate Secretary

  

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 TRUSTEE’S CERTIFICATE OF AUTHENTICATION: 

This is one of the Notes of the series designated “4.95% Senior Notes due October 1, 2020” pursuant to the within-mentioned Indenture.

 THE BANK OF NEW YORK MELLON TRUST COMPANY, N. A. 

as Trustee 
  

			
	By:	 	 /s/ Sharon McGrath

	Authorized Signatory

  

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 ASSIGNMENT FORM 

FOR VALUE RECEIVED, the undersigned hereby 

sells, assigns and transfers unto 
 PLEASE INSERT
SOCIAL 

					
	SECURITY OR OTHER IDENTIFYING	 	  
	  	

 NUMBER OF ASSIGNEE 
  

 
 (Please Print or Typewrite Name and
Address, including Zip Code, of Assignee) 
 the within Note of Washington Real Investment Trust
                                        
and hereby does irrevocably constitute and appoint 
  
  

Attorney to transfer said Note on the books of the within-named Trust with full power of substitution in the premises. 

 

					
	Dated:	 	  
	  	

  

					
	Signature:	  	  
	  	

 NOTICE: The signature to this assignment must correspond with the name as it appears on the first page of the within
Note in every particular, without alteration or enlargement or any change whatever. 
  

					
	Signature Guaranteed:	 	  
	  	

 NOTICE: Signatures) must be guaranteed by an “eligible guarantor institution” that is a member or
participant in a “signature guarantee program” (e.g., the Securities Transfer Agents Medallion Program, the Stock Exchange Medallion Program or the New York Stock Exchange, Inc. Medallion Signature Program). 

 

 -7-Officers' Certificate establishing the terms of the 4.95%  Notes

 Exhibit 4.2 

OFFICERS’ CERTIFICATE ESTABLISHING 

THE TERMS OF THE NOTES 

Pursuant to Section 301 of the Indenture 

We, George McKenzie, a trustee and President and Chief Executive Officer of Washington Real Estate Investment Trust (the
“Trust”), and William Camp, Executive Vice President and Chief Financial Officer of the Trust, do hereby deliver this Certificate establishing the following terms of the Notes (defined below) pursuant to (i) resolutions adopted
by the Board of Trustees of the Trust dated as of July 29, 2010 and resolutions of the Finance Committee of the Board of Trustees of the Trust dated as of September 23, 2010 and (ii) Section 301 of the Indenture, dated as of
August 1, 1996, between the Trust and The Bank of New York Mellon Trust Company, N.A. (successor to The First National Bank of Chicago), as Trustee, as amended (the “Indenture”), and do hereby certify that (terms used in this
Certificate and not defined herein having the same definitions as in the Indenture): 
 (1) The Notes shall
constitute a single series of debt securities under the Indenture having the title “4.95% Senior Notes due October 1, 2020” (the “Notes”). 

(2) The aggregate principal amount of the Notes that may be authenticated and delivered under the Indenture (except for
Notes authenticated and delivered upon registration of transfer of, or in exchange for, or in lieu of, other Notes pursuant to Sections 304, 305, 306, 906, 1107 or 1305 of the Indenture) shall be $250,000,000. 

(3) The Notes shall mature on October 1, 2020 (the “Maturity Date”), subject to prior redemption at the
option of the Trust as described in paragraph (9). 
 (4) The rate at which the Notes shall bear interest shall
be 4.95% per annum. The date from which such interest shall accrue shall be September 30, 2010; the Interest Payment Dates on which such interest will be payable shall be April 1 and October 1 in each year, beginning
April 1, 2011, and on the Maturity Date; the Regular Record Dates for the interest payable on the Notes on any Interest Payment Date shall be 15 calendar days prior to the related Interest Payment Date regardless of whether such day is a
Business Day; the interest on the Notes shall be computed on the basis of a 360-day year consisting of twelve 30-day months. 

(5) The Notes shall be issuable in denominations of $1,000 and integral multiples thereof. 

(6) The place where the principal of (and Make-Whole Amount, if any) and interest on the Notes shall be payable and the
Notes may be surrendered for registration of transfer or exchange and where notices or demands to or upon the Trust in respect of the Notes and the Indenture may be served shall be the Corporate Trust Office of The Bank of New York Mellon Trust
Company, N.A., at 101 Barclay Street, New York, NY 10286. 

 (7) The entire outstanding principal amount of the Notes (and Make-Whole
Amount, if any) shall be payable upon declaration of acceleration of the maturity thereof pursuant to Section 502 of the Indenture. 

(8) Payment of the principal of (and Make-Whole Amount, any) and interest on the Notes shall be payable in Dollars and the
Notes shall be denominated in Dollars. 
 (9) The Notes shall be redeemable at any time at the option of the
Trust, in whole or in part. Prior to April 1, 2020, the Redemption Price, payable in Dollars, shall equal to the sum of (i) the principal amount of the Notes being redeemed plus accrued interest thereon to the redemption date and
(ii) the Make-Whole Amount, if any, with respect to such Notes. On or after April 1, 2020, the Redemption Price, payable in Dollars, shall equal the principal amount of the Notes being redeemed plus accrued interest thereon to the
redemption date. 
 “Make-Whole Amount” shall mean, in connection with any optional redemption
or accelerated payment of any of the Notes, the excess, if any, of (a) the aggregate present value as of the date of such redemption or accelerated payment of each dollar of principal being redeemed or paid and the amount of interest (exclusive
of interest accrued to the date of redemption or accelerated payment) that would have been payable in respect of each such dollar if such redemption or accelerated payment had not been made, determined by discounting, on a semi-annual basis, such
principal and interest at the Reinvestment Rate (determined on the third Business Day preceding the date such notice of redemption is given or declaration of acceleration is made) from the respective dates on which such principal and interest would
have been payable if such redemption or accelerated payment had not been made, over (b) the aggregate principal amount of the Notes being redeemed or paid. 

“Reinvestment Rate” shall mean with respect to the Notes, 0.40% plus the arithmetic mean of the yields
under the heading “Week Ending” published in the most recent Statistical Release under the caption “Treasury Constant Maturities” for the maturity (rounded to the nearest month) corresponding to the remaining life to maturity, as
of the payment date of the principal of the Notes being redeemed or paid. If no maturity exactly corresponds to such maturity, yields for the two published maturities most closely corresponding to such maturity shall be calculated pursuant to the
immediately preceding sentence and the Reinvestment Rate shall be interpolated or extrapolated from such yields on a straight-line basis, rounding in each of such relevant periods to the nearest month. For the purposes of calculating the
Reinvestment Rate, the most recent Statistical Release published prior to the date of determination of the Make-Whole Amount shall be used. 
  

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 “Statistical Release” shall mean the statistical release
designated “H.15(519)” or any successor publication which is published weekly by the Federal Reserve System and which establishes yields on actively traded United States government securities adjusted to constant maturities, or, if such
statistical release is not published at the time of any determination under the Indenture, then such other reasonably comparable index which shall be designated by the Trust. 

(10) The Trust shall not be obligated to redeem, repay or purchase the Notes pursuant to any sinking fund or analogous
provision or at the option of a Holder thereof. 
 (11) The Holders of the Notes shall have no special rights in
addition to those provided in the Indenture upon the occurrence of any particular events. 
 (12) Other than as
set forth herein, there shall be no deletions from, modifications of or additions to the Events of Default or additional covenants of the Trust with respect to the Notes set forth in the Indenture. 

(13) The Notes will be represented by a single global security (the “Global Security”) registered in the
name of the Depository Trust Company (“DTC”) or its nominee. DTC or its nominee will credit, on its book-entry registration and transfer system, the amount of Notes represented by the Global Security. Ownership of beneficial
interests in the Global Security will be limited to institutions that have accounts with DTC or its nominee (“Participants”) and to persons that may hold interests through Participants. Beneficial owners of interests in the Global
Security may exchange such interests for Notes of like tenor of any authorized form and denomination only in the manner provided in Section 305 of the Indenture. DTC shall be the depositary of the Global Security. The form of such Global
Security, attached hereto as Exhibit A, is hereby approved. 
 (14) The Notes shall not be issuable as
Bearer Securities. 
 (15) Interest on any of the Notes shall be payable only to the Person in whose name that
Note (or one or more Predecessor Securities thereof) is registered at the close of business on the Regular Record Date for such interest. 

(16) Sections 1402 and 1403 of the Indenture shall be applicable to the Notes. 

(17) The Notes shall not be issuable in definitive form except under the circumstances described in Section 305 of
the Indenture. 
 (18) The Trust shall not pay Additional Amounts as contemplated by Section 1010 of the
Indenture on the Notes. 
  

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 (19) The Trust shall have no obligation to permit the conversion of the
Notes into Common Shares or Preferred Shares of the Trust. 
  

			
		 	 /s/ George McKenzie

		 	George McKenzie,
		 	President and Chief Executive Officer
		
		 	 /s/ William Camp

	Date: September 23, 2010	 	William Camp,
		 	Executive Vice President and Chief Financial Officer

  

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 Exhibit A 

Form of Note

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