Document:

Amendment No. 4 to Note Agreement, dated February 23, 2006

 Exhibit 10.4 
 BARNES GROUP INC. 
 AMENDMENT NO. 4 TO NOTE AGREEMENT 
 As of February 23, 2006 
 To each of the Current
Noteholders 
 Named in Annex 1 hereto 
 Ladies and Gentlemen: 
 Barnes Group Inc., a Delaware corporation (hereinafter, the
“Company”), together with its successors and assigns, agrees with you as follows: 
 1. PRELIMINARY STATEMENTS. 
 1.1 Note Issuance, etc. 
 3031786 Nova Scotia Company (“3031786”) issued and sold (i) US$24,500,000 aggregate principal amount of its 7.66% Senior Notes due November 12, 2007 (as may be amended, restated or otherwise modified from time to
time, the “7.66% Notes”) and (ii) US$45,500,000 aggregate principal amount of its 7.80% Senior Notes due November 12, 2010 (as may be amended, restated or otherwise modified from time to time, the “7.80%
Notes” and together with the 7.66% Notes, the “Notes”) pursuant to separate Note Agreements, each dated as of November 12, 1999, entered into by and among 3031786, the Company, as Guarantor and each of the Purchasers
listed on Schedule A attached thereto, as amended by Amendment No. 1 to Note Agreement dated as of February 5, 2003, by and among 3031786, the Company and each of the Purchasers listed on Annex 1 attached thereto, by the Assumption and
Amendment Agreement dated as of August 26, 2005, by and among 3031786, the Company and each of the Persons identified on Schedule A and Schedule B attached thereto, whereby the Company assumed the obligations of 30301786 under the said Note
Agreement and the Notes and Amendment No. 3 to Note Agreement dated as of January 11, 2006, by and among the Company and each of the Persons identified on Annex 1 attached thereto (the “Existing Note Agreement” and, as
amended by this Amendment No. 4 to Note Agreement (this “Amendment Agreement”), the “Note Agreement”). The register for the registration and transfer of the Notes indicates that the Persons named in Annex 1
hereto (collectively, the “Current Noteholders”) are currently the holders of the outstanding principal amount of the Notes as set forth next to such holder’s name on Annex 1. 

 2. DEFINED TERMS. 
 Capitalized terms used herein and not otherwise defined herein have the meanings ascribed to them in the Note Agreement. 
 3. AMENDMENT. 
 Subject to Section 5, the Existing Note Agreement is hereby amended by this Amendment Agreement in the
manner specified below in this Section 3 (the foregoing referred to herein as the “Amendment”). 
 3.1 Amendment
to Section 7.14 of the Existing Note Agreement. 
 Section 7.14 of the Existing Note Agreement is hereby amended, by
deleting “and” from the end of subsection “(g)”, relettering subsection “(h)” as a new subsection “(i)” and adding a new subsection “(h)” to read as follows: 
 “(h) Investments by Barnes in capital stock of any Person whose business is similar to the businesses conducted by Barnes and its
Subsidiaries or businesses reasonably related or incidental thereto, in an aggregate amount not to exceed $30,000,000 outstanding at any time; and” 
 4. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. 
 To induce you to enter into this Amendment Agreement and to consent to
the Amendment, the Company represents and warrants as follows: 
 4.1. Organization, Power and Authority, etc. 
 The Company is a corporation duly incorporated and validly existing and in good standing under the laws of the State of Delaware and has all requisite
corporate power and authority to enter into and perform its obligations under this Amendment Agreement. 
 4.2. Legal Validity.

 The execution and delivery of this Amendment Agreement by the Company and compliance by the Company with its obligations hereunder:
(a) are within the corporate powers of the Company; and (b) are legal and do not conflict with, result in any breach of, constitute a default under, or result in the creation of any Lien upon any Property of the Company under the
provisions of: (i) any charter instrument or bylaw to which the Company is a party or by which the Company or any of its Properties may be bound, (ii) any order, judgment, decree or ruling of any court, arbitrator or governmental authority
applicable to either the Company or any of its Properties or (iii) any agreement or instrument to which the Company is a party or by which the Company or any of its Properties may be bound or any statute or other rule or regulation of any
governmental authority applicable to the Company or any of its Properties. 
  

 2 

 This Amendment Agreement has been duly authorized by all necessary action on the part of the Company, has
been executed and delivered by a duly authorized officer of the Company, and constitutes a legal, valid and binding obligation of the Company, enforceable in accordance with its terms, except that enforceability may be limited by applicable
bankruptcy, reorganization, arrangement, insolvency, moratorium, or other similar laws affecting the enforceability of creditors’ rights generally and subject to the availability of equitable remedies. 
 4.3. No Defaults. 
 No event
has occurred and no condition exists that, upon the execution and delivery of this Amendment Agreement, would constitute a Default or an Event of Default. 
 5. EFFECTIVENESS OF THE AMENDMENT. 
 The Amendment shall become effective as of the first date written above (the
“Effective Date”) upon: 
 (a) execution and delivery of a counterpart of this Amendment Agreement by the Company and by
holders of 66-2/3% of aggregate outstanding principal amount of Notes; 
 (b) delivery by the Company to the Current Noteholders’
counsel of a fully executed copy of Amendment No. 1 to Second Amended and Restated Revolving Credit Agreement dated as of February 8, 2006, by and among Bank of America, N.A., as administrative agent, the lenders party thereto, the Company
and Barnes Group Switzerland GmbH, Nevis Branch, in form and substance satisfactory to the Current Noteholders; 
 (c) delivery by the
Company to the Current Noteholders’ counsel of a fully executed copy of Amendment No. 4 to Note Agreement, dated the date hereof to those separate Note Agreements, each dated as of November 21, 2000, (as amended by Amendment
No. 1 to Note Agreement dated as of February 21, 2002, Amendment No. 2 dated as of February 5, 2003 and Amendment No. 3 dated as of January 11, 2006) and entered into by and among the Company and each of the Purchasers
listed on Annex 1 attached thereto (the “2000 Note Agreement”); and 
 (d) the Company shall have paid the fees and expenses
of the Current Noteholders’ special counsel as provided in Section 6. 
 6. EXPENSES. 
 Whether or not the Amendment becomes effective, the Company will promptly (and in any event within thirty days of receiving any statement or invoice
therefor) pay all fees, expenses and costs relating to this Amendment Agreement, including, but not limited to, the reasonable fees of the Current Noteholders’ special counsel, Bingham McCutchen LLP, incurred in connection with the preparation,
negotiation and delivery of this Amendment Agreement and any 
  

 3 

 other documents related thereto. Notwithstanding the foregoing, the Company will on the Effective Date, pay the fees and
expense of Bingham McCutchen LLP incurred through the Effective Date. Nothing in this Section shall limit the Company’s obligations pursuant to Section 1.5 of the Existing Note Agreement. 
 7. MISCELLANEOUS. 
 7.1. Part of Existing Note
Agreement; Future References, etc. 
 This Amendment Agreement shall be construed in connection with and as a part of the Existing
Note Agreement and, except as expressly amended by this Amendment Agreement, all terms, conditions and covenants contained in the Existing Note Agreement are hereby ratified and shall be and remain in full force and effect. Any and all notices,
requests, certificates and other instruments executed and delivered after the execution and delivery of this Amendment Agreement may refer to the Existing Note Agreement without making specific reference to this Amendment Agreement, but nevertheless
all such references shall include this Amendment Agreement unless the context otherwise requires. 
 7.2. Counterparts; Effectiveness.

 This Amendment Agreement may be executed in any number of counterparts, each of which shall be an original but all of which
together shall constitute one instrument. Each counterpart may consist of a number of copies hereof, each signed by less than all, but together signed by all, of the parties hereto. Delivery of an executed signature page by facsimile transmission or
e-mail transmission of an adobe file format document (also known as a PDF file) shall be effective as delivery of a manually signed counterpart of this Amendment Agreement. 
 7.3. Governing Law. 
 THIS AMENDMENT AGREEMENT SHALL BE CONSTRUED AND ENFORCED IN ACCORDANCE WITH, AND THE RIGHTS OF THE PARTIES SHALL BE GOVERNED BY, THE LAW OF THE STATE OF CONNECTICUT EXCLUDING CHOICE-OF-LAW PRINCIPLES OF THE LAW OF SUCH
STATE THAT WOULD REQUIRE THE APPLICATION OF THE LAWS OF A JURISDICTION OTHER THAN CONNECTICUT.  
 [Remainder of page
intentionally left blank; next page is signature page.] 
  

 4 

 If you are in agreement with the foregoing, please so indicate by signing the acceptance below on the
accompanying counterpart of this Amendment Agreement and returning it to the Company, whereupon it will become a binding agreement among each of you and the Company. 
  

			
	BARNES GROUP INC.
		
	By:	 	 /S/ Lawrence W. O’Brien

	Name:	 	Lawrence W. O’Brien
	Title:	 	Vice President and Treasurer
		
	By:	 	 /S/ William C. Denninger

	Name:	 	William C. Denninger
	Title:	 	 Senior Vice President, Finance and
 Chief Financial
Officer

  

 [Signature page to Barnes Group Inc. Amendment No. 4 to 1999 Note Agreement] 

 The foregoing Amendment Agreement is hereby accepted as of the date first above written. 
  

			
	ALLSTATE INSURANCE COMPANY
		
	By:	 	 /S/ Robert B. Bodett

	Name:	 	Robert B. Bodett
		
	By:	 	 /S/ Jerry D. Zinkula

	Name:	 	Jerry D. Zinkula
		 	Authorized Signatories
	
	ALLSTATE LIFE INSURANCE COMPANY
		
	By	 	 /S/ Robert B/ Bodett

	Name:	 	Robert B. Bodett
		
	By:	 	 /S/ Jerry D. Zinkula

	Name:	 	Jerry D. Zinkula
		 	Authorized Signatories

  

 [Signature page to Barnes Group Inc. Amendment No. 4 to 1999 Note Agreement] 

			
	STATE FARM LIFE INSURANCE COMPANY
		
	By:	 	 /S/ Julie Pierce

	Name:	 	Julie Pierce
	Title:	 	Investment Officer
		
	By:	 	 /S/ Larry Rottunda

	Name:	 	Larry Rottunda
	Title:	 	Assistant Secretary

  

 [Signature page to Barnes Group Inc. Amendment No. 4 to 1999 Note Agreement] 

			
	MASSACHUSETTS MUTUAL LIFE INSURANCE COMPANY
	By:	 	Babson Capital Management LLC, Investment Adviser
		
	By:	 	 /S/ Emeka O.Onukwugha

	Name:	 	Emeka O. Onukwugha
	Title:	 	Managing Director

  

 [Signature page to Barnes Group Inc. Amendment No. 4 to 1999 Note Agreement] 

			
	PRUDENTIAL RETIREMENT INSURANCE AND ANNUITY COMPANY
	By:	 	Prudential Investment Management, Inc., as Investment Manager
		
	By:	 	 /S/ Paul Meiring

	Name:	 	Paul Meiring
	Title:	 	Vice President

  

 [Signature page to Barnes Group Inc. Amendment No. 4 to 1999 Note Agreement] 

			
	NATIONWIDE LIFE INSURANCE COMPANY
		
	By:	 	 /S/ Joseph P. Young

	Name:	 	Joseph P. Young
	Title:	 	Authorized Signatory

  

 [Signature page to Barnes Group Inc. Amendment No. 4 to 1999 Note Agreement] 

			
	THE CANADA LIFE ASSURANCE COMPANY
		
	By:	 	 /S/ Tad Anderson

	Name:	 	Tad Anderson
	Title:	 	A.V.P., Investments, U.S. Operations
		
	By:	 	 /S/ Eve Hampton

	Name:	 	Eve Hampton
	Title:	 	V.P., Investments. U.S. Operations

  

 [Signature page to Barnes Group Inc. Amendment No. 4 to 1999 Note Agreement] 

			
	PAN-AMERICAN LIFE INSURANCE COMPANY
		
	By:	 	 /S/ Lisa Baudot

	Name:	 	Lisa Baudot
	Title:	 	Vice President, Securities

  

 [Signature page to Barnes Group Inc. Amendment No. 4 to 1999 Note Agreement] 

 Annex 1 
 CURRENT NOTEHOLDERS AND 
 CURRENT OUTSTANDING PRINCIPAL AMOUNT 
  

							
	 Current Noteholders:
	  	 Outstanding Principal Amount of Notes

	 	  	7.66% Notes	  	7.80% Notes
	 Allstate Insurance Company
	  	$	5,000,000	  	 	n/a
	 Allstate Life Insurance Company
	  	$	12,500,000	  	 	n/a
	 State Farm Life Insurance Company
	  	$	7,000,000	  	$	7,000,000
	 Massachusetts Mutual Life Insurance Company
	  	 	n/a	  	$	14,000,000
	 Prudential Retirement Insurance and Annuity Company
	  	 	n/a	  	$	10,500,000
	 Nationwide Life Insurance Company
	  	 	n/a	  	$	7,000,000
	 The Canada Life Assurance Company
	  	 	n/a	  	$	3,500,000
	 Pan-American Life Insurance Company
	  	 	n/a	  	$	3,500,000
	 TOTALS
	  	$	24,500,000	  	$	45,500,000

  

 Annex 1First Amendment to Escrow Agreement

 EXHIBIT 4.1 
 EXECUTION COPY 
 FIRST AMENDMENT TO ESCROW AGREEMENT 
 This first amendment to Escrow Agreement (this “Amendment”) is entered into as of April 12, 2006 by and among KBS Real Estate Investment Trust,
Inc., a Maryland corporation (the “Company”), KBS Capital Markets Group, LLC, a California limited liability company (the “Dealer Manager”), and First Republic Trust Company (the “Escrow Agent”).

 The Company, the Dealer Manager and the Escrow Agent are parties to that certain escrow agreement dated as of November 15, 2006 (the “Escrow
Agreement”) in connection with the public offering of the Company’s common stock. 
 The Company and the Dealer Manager have requested that the
Escrow Agent amend the Escrow Agreement to modify the procedures for the disbursement of interest income earned on funds deposited in the Escrow Account and the Pennsylvania Escrow Account. 
 ACCORDINGLY, in consideration of the mutual promises herein contained, the parties intending to be legally bound agree as follows: 
 ARTICLE I 
 CONSTRUCTION AND DEFINED TERMS 
 SECTION 1.01. Articles and Sections. The Article and Section headings and captions in
this Amendment are for convenience only and shall not affect the construction or interpretation of this Amendment. The references in this Amendment to Articles and Sections shall be read as Articles or Sections of this Amendment unless otherwise
specifically provided. 
 SECTION 1.02. Defined Terms. All capitalized terms used herein and not otherwise defined shall have the meanings set
forth in the Escrow Agreement. 
 ARTICLE II 
 AMENDMENTS 
 SECTION 2.01. Amendments to Subparagraph 3(a). Subparagraph 3(a) of the Escrow
Agreement is hereby amended and restated to read in its entirety as follows: 
 3. (a) (i) Subject to the provisions of
subparagraphs 3(b)—3(e) below, once collected funds in the Escrow Account are an amount equal to or greater than the Required Capital, and upon receiving written instructions from the Company for disbursement of the funds, you shall
(i) disburse to the Company, by check or wire transfer, the funds in the Escrow Account representing the gross purchase price for the Stock, and (ii) disburse to the subscribers any interest thereon calculated pursuant to the provisions of
paragraph 8, provided however, that in the event a Form W-9 pertaining to any subscriber has not been received by you from the Dealer Manager, you shall remit an amount to such subscriber in accordance with the provisions hereof, withholding
twenty-eight percent (28%) of any interest income on subscription proceeds attributable to such subscriber. For 

 
purposes of this Agreement, the term “collected funds” shall mean all funds received by the Escrow Agent that have cleared normal banking channels
and are in the form of cash. Following such disbursement, the Escrow Account shall close and thereafter you shall forward directly to the Company any checks received by you from subscribers. 
 (ii) Regardless of any release of funds from the Escrow Account, the Dealer Manager shall continue to forward, or cause to be forwarded,
checks received from Pennsylvania Subscribers to you for deposit into the Pennsylvania Escrow Account until such time as the Company notifies you in writing that total subscription proceeds from Non-Affiliates (including the amount then in the
Pennsylvania Escrow Account) equal or exceed the Pennsylvania Required Capital. Within five days of receiving such notice and instructions from the Company for the disbursement of the funds, you shall (i) disburse to the Company, by check or
wire transfer, the funds in the Pennsylvania Escrow Account representing the gross purchase price for the Stock, and (ii) disburse to the subscribers any interest thereon calculated pursuant to the provisions of paragraph 8, provided however
that in the event a Form W-9 pertaining to any subscriber has not been received by you from the Dealer Manager, you shall remit an amount to such subscriber in accordance with the provisions hereof, withholding twenty-eight percent (28%) of any
interest income on subscription proceeds attributable to such subscriber. Following such disbursement, you shall close the Pennsylvania Escrow Account, and thereafter you shall forward directly to the Company any checks received by you from
Pennsylvania Subscribers. 
 SECTION 2.02. Amendments to Paragraph 8. Paragraph 8 of the Escrow Agreement is hereby amended and restated to
read in its entirety as follows: 
 8. If the collected funds are disbursed in accordance with the provisions of subparagraph 3(a), or the
Offering terminates prior to receipt of the Required Capital, or one or more of the Pennsylvania Subscribers elects to have his or her subscription returned in accordance with paragraph 3, interest income earned on subscription proceeds deposited in
the Escrow Account (the “Escrow Income”) and the Pennsylvania Escrow Account (the “Pennsylvania Escrow Income”), as applicable, shall be calculated by the Dealer Manager in accordance with this paragraph 8, and
shall be remitted to subscribers by you in accordance with paragraph 3 and without any deductions for escrow expenses. The Dealer Manager shall calculate each subscriber’s pro rata portion of Escrow Income as follows: the total amount of Escrow
Income (or Pennsylvania Escrow Income, as applicable) shall be multiplied by a fraction, (i) the numerator of which is determined by multiplying the number of shares of Stock purchased by said subscriber times the number of days said
subscriber’s proceeds are held in the Escrow Account (or the Pennsylvania Escrow Account, as applicable) prior to the date of disbursement, and (ii) the denominator of which is the total of the numerators for all such subscribers in such
account. 

 SECTION 2.03. Addition of Paragraph 28. the Escrow Agreement is hereby amended to add the following new
paragraph 28: 
 28. The parties to this Agreement understand that the Escrow Agent is required to provide United States income tax reporting
for the Escrow Income and the Pennsylvania Escrow Income. Each subscriber’s pro rata portion of Escrow Income (or Pennsylvania Escrow Income, as applicable), as calculated by the Dealer Manager in accordance with the provisions of paragraph 8,
shall be reported by the Escrow Agent as taxable to such subscriber. The Escrow Agent shall generate and deliver to each subscriber a Form 1099 as and when required under the United States income tax laws and regulations. 
 ARTICLE III 
 MISCELLANEOUS 
 SECTION 3.01. Governing Law. This Amendment shall be governed by the laws of the State of California as
to both interpretation and performance without regard to the conflict of laws rules thereof. 
 SECTION 3.02. Counterparts. This Amendment may
be executed in any number of counterparts, each of which when so executed and delivered shall be an original, but all of which shall constitute one and the same instrument. It shall not be necessary in making proof of this Amendment to produce or
account for more than one such counterpart. 
 SECTION 3.03. Notices. Any notice required or permitted by or in connection with this Amendment
shall be in writing and shall be made in accordance with the notice provision of the Escrow Agreement. 
 SECTION 3.04. Modification. This
Amendment may not be modified or revoked unless such modification or revocation is reduced to writing and signed by all parties hereto. 
 SECTION 3.05.
Scope of Amendment. Except as modified by this Amendment, the Escrow Agreement remains in full force and effect in accordance with its terms and constitutes a binding obligation of the Company, the Dealer Manager and the Escrow Agent.

 [SIGNATURE PAGE FOLLOWS] 

 Agreed to as of the date first written above. 
  

			
	KBS REAL ESTATE INVESTMENT TRUST, INC.
		
	By:	 	 /s/ Charles Jr. Schreiber, Jr.

	 Name:
	 	 Charles J. Schreiber, Jr.

	 Title:
	 	 Chief Executive Officer
  

	
	 KBS CAPITAL MARKETS GROUP, LLC

		
	By:	 	 /s/ Ken Jaffe

		
	 Name:
	 	 Ken Jaffe

	 Title:
	 	 Chief Operating Officer

 The terms and conditions contained above are hereby accepted and agreed to by: 
  

			
	 FIRST REPUBLIC TRUST COMPANY

		
	By:	 	 /s/ Mary Lago

	 Name:
	 	 Mary Lago

	 Title:
	 	 Managing Director, Trust Sales

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