Document:

EXHIBIT 4.1

 Exhibit 4.1 
 SECOND SUPPLEMENTAL INDENTURE 
 This “Supplemental Indenture” is entered into as of June 23,
2006 by and between CarrAmerica Realty Operating Partnership, L.P., a Delaware limited partnership (the “Company”), as successor to CarrAmerica Realty Corporation, a Maryland corporation (“CARC”), CarrAmerica Realty, L.P., a
Delaware limited partnership, as guarantor (the “Guarantor”), and Deutsche Bank Trust Company Americas, a New York banking corporation, formerly known as Bankers Trust Company, as trustee (the “Trustee”). 
 W I T N E S S E T H: 
 WHEREAS, CARC, the
Guarantor and Bankers Trust Company entered into that certain Indenture dated as of July 1, 1997 (the “Original Indenture”), and CARC issued pursuant to the Original Indenture its 7.375% Notes due 2007 (the “Notes”);

 WHEREAS, the Company, CARC, the Guarantor and the Trustee have heretofore entered into that certain First Supplemental Indenture dated as
of June 30, 2004 (the “First Supplemental Indenture,” and together with the Original Indenture, the “Indenture”), which provided for (i) the assumption by the Company of the due and punctual payment of the principal of
(and premium, if any) and any interest (including all Additional Amounts, if any, payable pursuant to Section 1012 of the Original Indenture) on all of the Notes, according to their tenor, and the due and punctual performance and observance of
all of the covenants and conditions of the Original Indenture to be performed by CARC and (ii) the Company’s succession and substitution for CARC with respect to the Original Indenture and the Notes; 
 WHEREAS, Section 902 of the Indenture provides that the Company, the Guarantor and the Trustee may, with the consent of the Holders of not less than
a majority in principal amount of all outstanding Notes, enter into a supplemental indenture for the purpose of amending certain provisions of the Indenture; 
 WHEREAS, the Company has offered to purchase for cash any and all of the outstanding Notes upon the terms and subject to the conditions set forth in the Offer to Purchase and Consent Solicitation Statement, dated
June 8, 2006 (as the same may be amended or supplemented from time to time, the “Statement”), and in the related Consent and Letter of Transmittal (as the same may be amended or supplemented from time to time, together with the
Statement, the “Offer”), from each Holder of such Notes; 
 WHEREAS, the Offer is conditioned upon, among other things, certain
amendments to the Indenture and to the Notes set forth in Article Two and Article Three of this Supplemental Indenture (the “Amendments”) having been approved by Holders of not less than a majority in principal amount of all outstanding
Notes voting (and a supplemental indenture in respect thereof having been executed and delivered), provided that the Amendments will become operative concurrently with the Mergers (as defined in the Statement) and provided all validly tendered Notes
are accepted for purchase pursuant to the Offer upon consummation of the Mergers; 

 WHEREAS, the Company has received and delivered to the Trustee the consents from Holders of a majority in
principal amount of all outstanding Notes to effect the Amendments; 
 WHEREAS, each of the Company and the Guarantor have been authorized by
or pursuant to a Board Resolution to enter into this Supplemental Indenture; and 
 WHEREAS, all acts, conditions, proceedings and
requirements necessary to make this Supplemental Indenture a valid, binding and legal agreement enforceable in accordance with its terms for the purposes expressed herein, in accordance with its terms, have been duly done and performed. 

NOW, THEREFORE, in consideration of the premises and the covenants and agreements contained herein, and for other good and valuable consideration the
receipt of which is hereby acknowledged, the Company, the Guarantor and the Trustee hereby agree as follows: 
 ARTICLE ONE 
 SECTION 1.01. Definitions. 
 Capitalized terms used
in this Supplemental Indenture and not otherwise defined herein shall have the meanings assigned to such terms in the Indenture. 
 ARTICLE
TWO 
 SECTION 2.01. Amendments to Table of Contents. 
 The Table of Contents of the Indenture is amended by deleting the titles to Sections 514, 1004 and 1007 through and including 1010, and inserting, in each case, in lieu thereof the phrase “[intentionally
omitted]”. 
 ARTICLE THREE 
 SECTION 3.01.
Elimination of Certain Definitions and References. 
 The Indenture is amended by deleting (i) all definitions of terms in
Section 101 and references to definitions of terms that are used exclusively in the text of the Indenture and the Notes that are being otherwise eliminated by this Supplemental Indenture and (ii) all references to Sections of the Indenture
that are used exclusively in the text of the Indenture and the Notes that are being otherwise eliminated by this Supplemental Indenture. 
  

 2 

 SECTION 3.02. Elimination of Certain Provisions in Article 5. 
 (i) Section 501 of the Indenture is amended by (a) deleting the text of each of clauses (3), (4) and (7) in its entirety and, in each
case, inserting in lieu thereof the phrase “[intentionally omitted];” (b) deleting the phrase “or any Significant Subsidiary” from clause (5); (c) deleting the phrase “or any Significant Subsidiary” from
clauses (A) and (C) of clause (6); and (d) deleting the phrases “or any Significant Subsidiary” and “either of” from clause (B) of clause (6); and 
 (ii) Article 5 of the Indenture is further amended by deleting the text of Section 514 in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted].” 
 SECTION 3.03. Amendment of Certain Provisions in Article 8. 
 Section 801 of the Indenture is amended by deleting the phrase “and immediately after giving effect to such transaction and treating any
indebtedness which becomes an obligation of the Company or any such Subsidiary as a result thereof as having been incurred by the Company or such Subsidiary at the time or [sic] such transaction, no Event of Default, and no event, which,
after notice or the lapse of time, or both, would become an Event of Default, shall have occurred and be continuing.” 
 SECTION 3.04. Amendment of
Certain Provisions in Article 10. 
 Article 10 of the Indenture is amended by deleting the text of each of Sections 1004 and 1007
through and including 1010 in its entirety and, in each case, inserting in lieu thereof the phrase “[intentionally omitted].” 
 ARTICLE FOUR 
 SECTION 4.01. Effectiveness of Amendments to Indenture. 
 Notwithstanding any other provision of this Supplemental Indenture, (i) this Supplemental Indenture shall be effective upon its signing by the
parties hereto but (ii) the Amendments shall become operative concurrently with the Mergers (as defined in the Statement) and provided all validly tendered Notes are accepted for purchase pursuant to the Offer upon consummation of the Mergers.

 SECTION 4.02. Governing Law. 
 This
Supplemental Indenture shall be governed by and construed in accordance with the law of the State of New York. 
  

 3 

 SECTION 4.03. Counterparts. 
 This Supplemental Indenture may be executed in counterparts, each of which shall be deemed an original, but all of which shall together constitute one and the same instrument. 
 SECTION 4.04. Effect of Headings. 
 The Section
headings herein are for convenience only and shall not affect the construction hereof. 
 SECTION 4.05. Conflict with Trust Indenture Act. 

If any provision of this Supplemental Indenture limits, qualifies or conflicts with any provision of the Trust Indenture Act that may not be so
limited, qualified or conflicted with, such provision of such Act shall control. If any provision of this Supplemental Indenture modifies or excludes any provision of the Trust Indenture Act that may be so modified or excluded, the provision of such
Act shall be deemed to apply to the Indenture as so modified or to be excluded by this Supplemental Indenture, as the case may be. 
 SECTION 4.06.
Separability Clause. 
 In case any provision in this Supplemental Indenture shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 
 SECTION 4.07. Benefits of Supplemental
Indenture. 
 Nothing in this Supplemental Indenture, the Indenture or the Notes, express or implied, shall give to any person, other
than the parties hereto and thereto, any Security Registrar, any Paying Agent, any Authenticating Agent and their successors hereunder and thereunder and the Holders of Notes any benefit or any legal or equitable right, remedy or claim under this
Supplemental Indenture, the Indenture or the Notes. 
  

 4 

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed, all
as of the date first above written. 
  

											
		 	CARRAMERICA REALTY OPERATING PARTNERSHIP, L.P.
			
		 	By:	 	CarrAmerica Realty Corporation, Its General Partner
			
		 	By:	 	 /s/ Stephen E. Riffee
  

		 	Name:	 	Stephen E. Riffee
		 	Title:	 	Chief Financial Officer
						
	Attest: /s/ Ann Marie Pulsch	 		 		 		 		 	
	  
  
	 		 		 		 		 	
	Name: Ann Marie Pulsch	 		 		 		 		 	
	Title:   Assistant Corporate Secretary	 		 		 		 		 	
		 	CARRAMERICA REALTY, L.P.
			
		 	By:	 	CarrAmerica Realty GP Holdings, Inc., its general partner
				
		 		 	By:	 	CarrAmerica Realty Operating Partnership, L.P., its sole and managing member
						
		 		 		 		 	By:	 	CarrAmerica Realty Corporation, its general partner
						
		 		 		 		 	By:	 	 /s/ Stephen E. Riffee
  

		 		 		 		 	Name:	 	Stephen E. Riffee
		 		 		 		 	Title:	 	Chief Financial Officer
						
	Attest: /s/ Ann Marie Pulsch	 		 		 		 		 	
	  
  
	 		 		 		 		 	
	Name: Ann Marie Pulsch	 		 		 		 		 	
	Title:   Assistant Corporate Secretary	 		 		 		 		 	

  

 5 

							
		 	DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee
			
		 	By:	 	Deutsche Bank National Trust Company
				
		 		 	By:	 	 /s/ David Contino

		 		 	Name:	 	David Contino
		 		 	Title:	 	Assistant Vice President
				
		 		 	By:	 	 /s/ Irina Golovashchuk

		 		 	Name:	 	Irina Golovashchuk
		 		 	Title:	 	Assistant Vice President

  

 6EXHIBIT 4.2

 Exhibit 4.2 
 SECOND SUPPLEMENTAL INDENTURE 
 This “Supplemental Indenture” is entered into as of June 23,
2006 by and between CarrAmerica Realty Operating Partnership, L.P., a Delaware limited partnership (the “Company”), as successor to CarrAmerica Realty Corporation, a Maryland corporation (“CARC”), CarrAmerica Realty, L.P., a
Delaware limited partnership, as guarantor (the “Guarantor”), and Deutsche Bank Trust Company Americas, a New York banking corporation, formerly known as Bankers Trust Company, as trustee (the “Trustee”). 
 W I T N E S S E T H: 
 WHEREAS, CARC, the
Guarantor and Bankers Trust Company entered into that certain Indenture dated as of February 23, 1998 (the “Original Indenture”), and CARC issued pursuant to the Original Indenture its 6.875% Notes due 2008 (the “Notes”);

 WHEREAS, the Company, CARC, the Guarantor and the Trustee have heretofore entered into that certain First Supplemental Indenture dated as
of June 30, 2004 (the “First Supplemental Indenture,” and together with the Original Indenture, the “Indenture”), which provided for (i) the assumption by the Company of the due and punctual payment of the principal of
(and premium, if any) and any interest (including all Additional Amounts, if any, payable pursuant to Section 1012 of the Original Indenture) on all of the Notes, according to their tenor, and the due and punctual performance and observance of
all of the covenants and conditions of the Original Indenture to be performed by CARC and (ii) the Company’s succession and substitution for CARC with respect to the Original Indenture and the Notes; 
 WHEREAS, Section 902 of the Indenture provides that the Company, the Guarantor and the Trustee may, with the consent of the Holders of not less than
a majority in principal amount of all outstanding Notes, enter into a supplemental indenture for the purpose of amending certain provisions of the Indenture; 
 WHEREAS, the Company has offered to purchase for cash any and all of the outstanding Notes upon the terms and subject to the conditions set forth in the Offer to Purchase and Consent Solicitation Statement, dated
June 8, 2006 (as the same may be amended or supplemented from time to time, the “Statement”), and in the related Consent and Letter of Transmittal (as the same may be amended or supplemented from time to time, together with the
Statement, the “Offer”), from each Holder of such Notes; 
 WHEREAS, the Offer is conditioned upon, among other things, certain
amendments to the Indenture and to the Notes set forth in Article Two and Article Three of this Supplemental Indenture (the “Amendments”) having been approved by Holders of not less than a majority in principal amount of all outstanding
Notes (and a supplemental indenture in respect thereof having been executed and delivered), provided that the Amendments will become operative concurrently with the Mergers (as defined in the Statement) and provided all validly tendered Notes are
accepted for purchase pursuant to the Offer upon consummation of the Mergers; 

 WHEREAS, the Company has received and delivered to the Trustee the consents from Holders of a majority in
principal amount of all outstanding Notes to effect the Amendments; 
 WHEREAS, each of the Company and the Guarantor have been authorized by
or pursuant to a Board Resolution to enter into this Supplemental Indenture; and 
 WHEREAS, all acts, conditions, proceedings and
requirements necessary to make this Supplemental Indenture a valid, binding and legal agreement enforceable in accordance with its terms for the purposes expressed herein, in accordance with its terms, have been duly done and performed. 

NOW, THEREFORE, in consideration of the premises and the covenants and agreements contained herein, and for other good and valuable consideration the
receipt of which is hereby acknowledged, the Company, the Guarantor and the Trustee hereby agree as follows: 
 ARTICLE ONE 
 SECTION 1.01. Definitions. 
 Capitalized terms used
in this Supplemental Indenture and not otherwise defined herein shall have the meanings assigned to such terms in the Indenture. 
 ARTICLE
TWO 
 SECTION 2.01. Amendments to Table of Contents. 
 The Table of Contents of the Indenture is amended by deleting the titles to Sections 514, 1004 and 1007 through and including 1010, and inserting, in each case, in lieu thereof the phrase “[intentionally
omitted]”. 
 ARTICLE THREE 
 SECTION 3.01.
Elimination of Certain Definitions and References. 
 The Indenture is amended by deleting (i) all definitions of terms in
Section 101 and references to definitions of terms that are used exclusively in the text of the Indenture and the Notes that are being otherwise eliminated by this Supplemental Indenture and (ii) all references to Sections of the Indenture
that are used exclusively in the text of the Indenture and the Notes that are being otherwise eliminated by this Supplemental Indenture. 
  

 2 

 SECTION 3.02. Elimination of Certain Provisions in Article 5. 
 (i) Section 501 of the Indenture is amended by (a) deleting the text of each of clauses (3), (4) and (7) in its entirety and, in each
case, inserting in lieu thereof the phrase “[intentionally omitted];” (b) deleting the phrase “or any Significant Subsidiary” from clause (5); (c) deleting the phrase “or any Significant Subsidiary” from
clauses (A) and (C) of clause (6); and (d) deleting the phrases “or any Significant Subsidiary” and “either of” from clause (B) of clause (6); and 
 (ii) Article 5 of the Indenture is further amended by deleting the text of Section 514 in its entirety and inserting in lieu thereof the phrase
“[intentionally omitted].” 
 SECTION 3.03. Amendment of Certain Provisions in Article 8. 
 Section 801 of the Indenture is amended by deleting the phrase “and immediately after giving effect to such transaction and treating any
indebtedness which becomes an obligation of the Company or any such Subsidiary as a result thereof as having been incurred by the Company or such Subsidiary at the time or [sic] such transaction, no Event of Default, and no event, which,
after notice or the lapse of time, or both, would become an Event of Default, shall have occurred and be continuing.” 
 SECTION 3.04. Amendment of
Certain Provisions in Article 10. 
 Article 10 of the Indenture is amended by deleting the text of each of Sections 1004 and 1007
through and including 1010 in its entirety and, in each case, inserting in lieu thereof the phrase “[intentionally omitted].” 
 ARTICLE FOUR 
 SECTION 4.01. Effectiveness of Amendments to Indenture. 
 Notwithstanding any other provision of this Supplemental Indenture, (i) this Supplemental Indenture shall be effective upon its signing by the
parties hereto but (ii) the Amendments shall become operative concurrently with the Mergers (as defined in the Statement) and provided all validly tendered Notes are accepted for purchase pursuant to the Offer upon consummation of the Mergers.

 SECTION 4.02. Governing Law. 
 This
Supplemental Indenture shall be governed by and construed in accordance with the law of the State of New York. 
  

 3 

 SECTION 4.03. Counterparts. 
 This Supplemental Indenture may be executed in counterparts, each of which shall be deemed an original, but all of which shall together constitute one and the same instrument. 
 SECTION 4.04. Effect of Headings. 
 The Section
headings herein are for convenience only and shall not affect the construction hereof. 
 SECTION 4.05. Conflict with Trust Indenture Act. 

If any provision of this Supplemental Indenture limits, qualifies or conflicts with any provision of the Trust Indenture Act that may not be so
limited, qualified or conflicted with, such provision of such Act shall control. If any provision of this Supplemental Indenture modifies or excludes any provision of the Trust Indenture Act that may be so modified or excluded, the provision of such
Act shall be deemed to apply to the Indenture as so modified or to be excluded by this Supplemental Indenture, as the case may be. 
 SECTION 4.06.
Separability Clause. 
 In case any provision in this Supplemental Indenture shall be invalid, illegal or unenforceable, the validity,
legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby. 
 SECTION 4.07. Benefits of Supplemental
Indenture. 
 Nothing in this Supplemental Indenture, the Indenture or the Notes, express or implied, shall give to any person, other
than the parties hereto and thereto, any Security Registrar, any Paying Agent, any Authenticating Agent and their successors hereunder and thereunder and the Holders of Notes any benefit or any legal or equitable right, remedy or claim under this
Supplemental Indenture, the Indenture or the Notes. 
  

 4 

 IN WITNESS WHEREOF, the parties hereto have caused this Supplemental Indenture to be duly executed, all
as of the date first above written. 
  

									
		 	CARRAMERICA REALTY OPERATING PARTNERSHIP, L.P.
			
		 	By:	 	CarrAmerica Realty Corporation, Its General Partner
			
		 	By:	 	 /s/ Stephen E. Riffee
  

		 	Name:	 	Stephen E. Riffee
		 	Title:	 	Chief Financial Officer
					
	Attest: /s/ Ann Marie Pulsch	 		 		 		 	
	  
  
	 		 		 		 	
	Name: Ann Marie Pulsch	 		 		 		 	
	Title:   Assistant Corporate Secretary	 		 		 		 	
		
		 	CARRAMERICA REALTY, L.P.
			
		 	By:	 	CarrAmerica Realty GP Holdings, Inc., its general partner
				
		 		 	By:	 	CarrAmerica Realty Operating Partnership, L.P., its sole and managing member
					
		 		 		 	By:	 	CarrAmerica Realty Corporation, its general partner
					
		 		 		 	By:	 	 /s/ Stephen E. Riffee
  

		 		 		 	Name:	 	Stephen E. Riffee
		 		 		 	Title:	 	Chief Financial Officer
					
	Attest: /s/ Ann Marie Pulsch	 		 		 		 	
	  
  
	 		 		 		 	
	Name: Ann Marie Pulsch	 		 		 		 	
	Title:   Assistant Corporate Secretary	 		 		 		 	

  

 5 

							
		 	DEUTSCHE BANK TRUST COMPANY AMERICAS, as Trustee
			
		 	By:	 	Deutsche Bank National Trust Company
				
		 		 	By:	 	 /s/ David Contino

		 		 	Name:	 	David Contino
		 		 	Title:	 	Assistant Vice President
				
		 		 	By:	 	 /s/ Irina Golovashchuk

		 		 	Name:	 	Irina Golovashchuk
		 		 	Title:	 	Assistant Vice President

  

 6

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