Document:

Amendment to Purchase and Sale Agreement

 Exhibit 10.50 
 AMENDMENT TO PURCHASE AND SALE AGREEMENT 
 THIS AMENDMENT TO PURCHASE AND SALE AGREEMENT (this
“Amendment”) dated as of December 22, 2006, is entered into between KBS CRESCENT GREEN, LLC, a Delaware limited liability company (“Purchaser”), and CRESCENT 1100, L.L.C., a Delaware limited liability company,
CRESCENT 1200, L.L.C., a Delaware limited liability company, and CRESCENT 1300, L.L.C., a Delaware limited liability company (collectively, “Sellers”), with reference to the following recitals: 
 RECITALS 
 A. Sellers and KBS
Capital Advisors LLC, a Delaware limited liability company (“Assignor”), entered into that certain Purchase and Sale Agreement dated as of December 19, 2006 (the “Purchase Agreement”). Assignor subsequently
assigned its entire interest in and to the Purchase Agreement to Purchaser. All initially-capitalized terms not otherwise defined herein shall have the meanings set forth in the Purchase Agreement unless the context clearly indicates otherwise.

 B. Sellers and Purchaser mutually desire to amend the Purchase Agreement as provided below. 
 NOW, THEREFORE, for good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereto hereby agree as
follows: 
 AGREEMENT 
 1. Reduction in Purchase Price. The Purchase Price shall be, and hereby is, reduced from Forty-Eight Million Two Hundred Fifty Thousand and No/100 Dollars ($48,250,000.00) to Forty-Eight Million One Hundred
Forty Thousand and No/100 Dollars ($48,140,000.00). 
 2. Post Closing Escrow Agreement. The definition of “Post
Closing Escrow Agreement” is hereby amended to mean an escrow agreement, the form of which shall be mutually agreed upon and approved by Sellers and Purchaser at least five (5) business days prior to the Closing Date. 
 3. Ellis & Winters Letter. The parties hereby agree upon and approve the form of the Ellis and Winters Letter Agreement as
attached hereto as Exhibit A. 
 4. Temporary Parking Easement. The parties hereby agree upon and approve the
form of the Crescent Lakeside Parking Easement as attached hereto as Exhibit B. 
 5. Ground Lease Amendment.
The parties hereby agree upon and approve the form of the Ground Lease Amendment as attached hereto as Exhibit C. 

 6. Service Contracts. The only Service Contracts under which Purchaser will assume
obligations at Closing for the Property are the Service Contracts listed on Exhibit D attached hereto. Seller shall terminate at Closing all Service Contracts that are not listed on Exhibit D attached hereto. 
 7. Approved Title Insurance Policy. Notwithstanding anything stated to the contrary in the Purchase Agreement, including, without
limitation, the provisions of Section 7 of the Purchase Agreement, the Title Insurance Policy which the Title Insurer shall issue and deliver to Purchaser, or shall have committed to issue and deliver to Purchaser, as a condition precedent to
Closing, shall be a title policy in the form contemplated by the pro-forma title policy attached hereto as Exhibit E and made a part hereof, together with any endorsements attached thereto. 
 8. Amendments. Purchaser acknowledges receipt of (a) the fully-executed ACS 1200 Lease Amendment; and (b) the
fully-executed ACS 1300 Lease Amendment. Notwithstanding anything to the contrary set forth in the Purchase Agreement, Purchaser hereby confirms that the foregoing lease amendments are acceptable to Purchaser and Sellers’ delivery thereof
satisfies Sellers’ obligation to deliver the ACS 1200 Lease Amendment and the ACS 1300 Lease Amendment pursuant to Section 10.1.1 of the Purchase Agreement. 
 9. No Other Amendments; This Amendment Governs and Controls. Except as expressly modified hereby, the Purchase Agreement shall
remain unmodified and in full force and effect. To the extent any of the provisions of this Amendment are inconsistent with any of the provisions set forth in the Purchase Agreement, the provisions of this Amendment shall govern and control.

 10. Counterparts. This Amendment may be executed in any number of counterparts, each of which shall be deemed an
original, but all of which when taken together shall constitute one and the same instrument. Each counterpart may be delivered by facsimile transmission. The signature page of any counterpart may be detached therefrom without impairing the legal
effect of the signature(s) thereon provided such signature page is attached to any other counterpart identical thereto. 
 [SIGNATURES ON NEXT
PAGE] 
  

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 IN WITNESS WHEREOF, Purchaser and Sellers have executed this Amendment as of the day and year first above
written. 
  

									
	SELLERS:
	
	 CRESCENT 1100, L.L.C.,
 a Delaware
limited liability company

		
	By:	 	Key Partners XII-CG, LLC, a North Carolina limited liability company, Member/Manager
			
		 	By:	 	Capital Associates Limited Partnership, a North Carolina limited partnership, Manager
				
		 		 	By:	 	/s/ Frank P. Baird
		 		 	Name:	 	Frank P. Baird
		 		 	Title:	 	
		
	By:	 	Union Security Insurance Company, an Iowa corporation, Member/Manager
			
		 	By:	 	/s/ Authorized Signatory
		 	Name:	 	  
		 	Title:	 	  
		
	Date:	 	  

  

									
	 CRESCENT 1200, L.L.C.,
 a Delaware
limited liability company

		
	By:	 	Key Partners XIV-CG, LLC, a North Carolina limited liability company, Member/Manager
			
		 	By:	 	Capital Associates Limited Partnership, a North Carolina limited partnership, Manager
				
		 		 	By:	 	/s/ Frank P. Baird
		 		 	Name:	 	Frank P. Baird
		 		 	Title:	 	

 [SIGNATURES CONTINUE ON FOLLOWING PAGE] 
  

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	By:	 	Union Security Insurance Company, an Iowa corporation, Member/Manager
			
		 	By:	 	/s/ Authorized Signatory
		 	Name:	 	  
		 	Title:	 	  
	
	 CRESCENT 1300, L.L.C.,
 a Delaware
limited liability company

		
	By:	 	Key Partners XV-CG, LLC, a North Carolina limited liability company, Member/Manager
			
		 	By:	 	Capital Associates Limited Partnership, a North Carolina limited partnership, Manager
				
		 		 	By:	 	/s/ Frank P. Baird
		 		 	Name: Frank P. Baird
		 		 	Title:
		
	By:	 	Union Security Insurance Company, an Iowa corporation, Member/Manager
			
		 	By:	 	/s/ Authorized Signatory
		 	Name:	 	  
		 	Title:	 	  

 [SIGNATURES CONTINUE ON FOLLOWING PAGE] 
  

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	PURCHASER:
	
	 KBS CRESCENT GREEN, LLC,
 a Delaware
limited liability company

		
	By:	 	 KBS REIT ACQUISITION IX, LLC,
 a Delaware
limited liability company,
 its sole member

			
		 	By:	 	 KBS LIMITED PARTNERSHIP,
 a Delaware
limited partnership,
 its sole member

				
		 		 	By:	 	 KBS REAL ESTATE INVESTMENT TRUST, INC.,
 a
Maryland corporation,
 general partner

					
		 		 		 	By:	 	/s/ Authorized Signatory
		 		 		 	Name:	 	
		 		 		 	Title:	 	

  

 E-3Form of Stock Unit Award Agreement

 Exhibit 10.1 
 NATIONWIDE HEALTH PROPERTIES, INC. 
 2005 PERFORMANCE INCENTIVE PLAN 
 STOCK UNIT AWARD AGREEMENT 
 THIS
STOCK UNIT AWARD AGREEMENT (this “Agreement”) is dated as of [                    ,
200    ] by and between Nationwide Health Properties, Inc., a Maryland corporation (the “Corporation”), and
[                            ] (the “Participant”). 
 WITNESSETH 
 WHEREAS, pursuant
to the Nationwide Health Properties, Inc. 2005 Performance Incentive Plan (the “Plan”), the Corporation has granted to the Participant effective as of the date hereof (the “Award Date”), a credit of stock units
under the Plan (the “Award”), upon the terms and conditions set forth herein and in the Plan. 
 NOW THEREFORE, in
consideration of services rendered and to be rendered by the Participant, and the mutual promises made herein and the mutual benefits to be derived therefrom, the parties agree as follows: 
 1. Defined Terms. Capitalized terms used herein and not otherwise defined herein shall have the meaning assigned to such terms in the Plan.

 2. Grant. Subject to the terms of this Agreement, the Corporation hereby grants to the Participant an Award with respect to
an aggregate of [                    ] stock units (subject to adjustment as provided in Section 7.1 of the Plan) (the
“Stock Units”). As used herein, the term “stock unit” shall mean a non-voting unit of measurement which is deemed for bookkeeping purposes to be equivalent to one outstanding share of the Corporation’s Common Stock
(subject to adjustment as provided in Section 7.1 of the Plan) solely for purposes of the Plan and this Agreement. The Stock Units shall be used solely as a device for the determination of the payment to eventually be made to the Participant if
such Stock Units vest pursuant to Section 3. The Stock Units shall not be treated as property or as a trust fund of any kind. 
 3.
Vesting. Subject to Section 8 below, the Award shall vest and become nonforfeitable with respect to [one-third of the total number of Stock Units (subject to adjustment under Section 7.1 of the Plan) on each of the first,
second and third anniversaries of the Award Date.] 
 4. Continuance of Employment. The vesting schedule requires
continued employment or service through each applicable vesting date as a condition to the vesting of the applicable installment of the Award and the rights and benefits under this Agreement. Employment or service for only a portion of the vesting
period, even if a substantial portion, will not entitle the Participant to any proportionate vesting or avoid or mitigate a termination of rights and benefits upon or following a termination of employment or services as provided in Section 8
below or under the Plan. 
 Nothing contained in this Agreement or the Plan constitutes an employment or service commitment by the
Corporation, affects the Participant’s status as an employee at will who is subject to termination without cause, confers upon the Participant any right to remain employed by or in service to the Corporation or any Subsidiary, interferes in any
way with the right of the 
  

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 Corporation or any Subsidiary at any time to terminate such employment or services, or affects the right of the
Corporation or any Subsidiary to increase or decrease the Participant’s other compensation or benefits. Nothing in this paragraph, however, is intended to adversely affect any independent contractual right of the Participant without his or her
consent thereto. 
 5. Dividend and Voting Rights. 
 (a) Limitations on Rights Associated with Units. The Participant shall have no rights as a stockholder of the Corporation, no dividend
rights (except as expressly provided in Sections 5(b) and 5(c) with respect to Dividend Equivalent Rights) and no voting rights with respect to the Stock Units and any shares of Common Stock underlying or issuable in respect of such Stock Units
until such shares of Common Stock are actually issued to and held of record by the Participant. No adjustments will be made for dividends or other rights of a holder for which the record date is prior to the date of issuance of the stock
certificate. 
 (b) Dividend Equivalent Rights. Subject to Section 5(c) below, in the event that the Corporation pays an
ordinary cash dividend on its Common Stock and the related dividend payment record date occurs at any time after the Award Date and before all of the Stock Units subject to the Award either have been paid pursuant to this Section 5(b) or
Section 7 or have terminated pursuant to Section 8, the Corporation shall credit the Participant with an additional number of Stock Units equal to (i) the per-share cash dividend paid by the Corporation on its Common Stock with
respect to such record date, multiplied by (ii) the total number of outstanding and unpaid Stock Units (including any dividend equivalents previously credited under this Section 5(b) and with such total number subject to adjustment
pursuant to Section 7.1 of the Plan and/or Section 9 hereof) subject to the Award as of such record date, divided by (iii) the fair market value of a share of Common Stock (as determined under the Plan) on the related dividend payment
date. Any Stock Units credited pursuant to the foregoing provisions of this Section 5(b) shall be subject to the same vesting, payment and other terms, conditions and restrictions as the original Stock Units to which they relate; provided,
however, that the Participant may elect, prior to the time the Award is granted and on a form and in a manner prescribed by the Administrator, that any Stock Units credited pursuant to this Section 5(b) that relate to Stock Units that are not
vested as of the applicable dividend payment record date and are subject to a deferred payment election pursuant to Section 7 hereof, shall be paid on or as soon as practicable after the vesting date of such Stock Units (as opposed to being
paid on the deferred payment date), with any Stock Units credited pursuant to this Section 5(b) after such vesting date being paid pursuant to such deferred payment election; and provided, further, that the Corporation shall retain discretion
to pay any Stock Units credited under this Section 5(b) in cash rather than shares of Common Stock if and to the extent that payment in shares would exceed the applicable share limits of the Plan. No crediting of Stock Units shall be made
pursuant to this Section 5(b) with respect to any Stock Units which, as of the related dividend payment record date, have either been paid pursuant to this Section 5(b) or Section 7 or terminated pursuant to Section 8.

 (c) Election to Receive Vested Dividend Equivalents in Cash. Notwithstanding Section 5(b), if the Participant elects to
defer payment of any Stock Units hereunder as contemplated by Section 7, the Participant may also elect, prior to the time the Award is granted and on a form and in a manner prescribed by the Administrator, that, in the 
  

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 event that the Corporation pays an ordinary cash dividend on its Common Stock and the related dividend payment record
date occurs after the date any Stock Units subject to such deferral election have vested and prior to the date such vested Stock Units are paid, the Corporation shall pay the Participant an amount equal to the per-share cash dividend paid on its
Common Stock, multiplied by the number of vested and unpaid Stock Units subject to such deferral election as of such record date. Such amount will be paid to the Participant in cash in a lump sum on or as soon as practicable after January 1 of
the calendar year following the calendar year in which such record date occurred (the “Payment Date”), together with any interest accrued on such amount with respect to the period commencing with the date on which the related dividend is
actually paid to the Corporation’s stockholders and ending on the Payment Date, such interest to accrue at an annual rate equal to the three-month London Inter-Bank Offered Rate in effect on the date the related dividend is actually paid to the
Corporation’s stockholders and to be compounded quarterly. No payment shall be made pursuant to this Section 5(c) with respect to any Stock Units which, as of such record date, have either been paid pursuant to Section 5(b) or
Section 7 or terminated pursuant to Section 8. For purposes of clarity, the Participant will not be entitled to both a credit of additional Stock Units under Section 5(b) and a cash payment under this Section 5(c) with respect to
any Stock Unit in respect of any one dividend payment event. 
 6. Restrictions on Transfer. Neither the Award, nor any
interest therein or amount or shares payable in respect thereof may be sold, assigned, transferred, pledged or otherwise disposed of, alienated or encumbered, either voluntarily or involuntarily. The transfer restrictions in the preceding sentence
shall not apply to (a) transfers to the Corporation, or (b) transfers by will or the laws of descent and distribution. 
 7.
Timing and Manner of Payment of Stock Units. On or as soon as administratively practical following each vesting of the applicable portion of the total Award pursuant to Section 3 or Section 9, the Corporation shall deliver to
the Participant a number of shares of Common Stock (either by delivering one or more certificates for such shares or by entering such shares in book entry form, as determined by the Corporation in its discretion) equal to the number of Stock Units
subject to this Award that vest on the applicable vesting date (including any vested Stock Units credited in respect of Dividend Equivalent Rights pursuant to Section 5(b) hereof). Notwithstanding the foregoing sentence, the Participant may
elect, on a form and in a manner prescribed by the Administrator, to defer any such payment of vested Stock Units, provided that such election must be made prior to the time the Award is granted and any such deferral of payment must comply with any
applicable requirements of Section 409A of the Code (including, without limitation, the six-month waiting period contemplated by Section 18, if applicable). The Corporation’s obligation to deliver shares of Common Stock or otherwise
make payment with respect to vested Stock Units is subject to the condition precedent that the Participant or other person entitled under the Plan to receive any shares with respect to the vested Stock Units deliver to the Corporation any
representations or other documents or assurances required pursuant to Section 8.1 of the Plan. The Participant shall have no further rights with respect to any Stock Units that are paid pursuant to Section 5(b) or this Section 7 or
that terminate pursuant to Section 8. 
 8. Effect of Termination of Employment. The Participant’s Stock Units shall
terminate to the extent such units have not become vested prior to the first date the Participant is no longer employed by the Corporation or one of its Subsidiaries, regardless of the reason for the 
  

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 termination of the Participant’s employment with the Corporation or a Subsidiary, whether with or without cause,
voluntarily or involuntarily; provided, however, that if the Participant has any rights to accelerated vesting of restricted stock awards in connection with such termination of employment pursuant to a change in control or other employment agreement
with the Corporation, such acceleration rights shall apply equally to the Stock Units. If any unvested Stock Units are terminated hereunder, such Stock Units shall automatically terminate and be cancelled as of the applicable termination date
without payment of any consideration by the Corporation and without any other action by the Participant, or the Participant’s beneficiary or personal representative, as the case may be. 
 9. Adjustments Upon Specified Events. The Administrator may accelerate payment and vesting of the Stock Units in such circumstances as it,
in its sole discretion, may determine. In addition, upon the occurrence of certain events relating to the Corporation’s stock contemplated by Section 7.1 of the Plan (including, without limitation, an extraordinary cash dividend on such
stock), the Administrator shall make adjustments in accordance with such section in the number of Stock Units then outstanding and the number and kind of securities that may be issued in respect of the Award. No such adjustment shall be made with
respect to any ordinary cash dividend for which dividend equivalents are credited or paid pursuant to Section 5(b) or Section 5(c). 
 10. Tax Withholding. Subject to Section 8.1 of the Plan and such rules and procedures as the Administrator may impose, upon any distribution of shares of Common Stock in respect of the Stock Units, the Corporation shall
automatically reduce the number of shares to be delivered by (or otherwise reacquire) the appropriate number of whole shares, valued at their then fair market value (with the “fair market value” of such shares determined in accordance with
the applicable provisions of the Plan), to satisfy any withholding obligations of the Corporation or its Subsidiaries with respect to such distribution of shares at the minimum applicable withholding rates; provided, however, that the foregoing
provision shall not apply in the event that the Participant has, subject to the approval of the Administrator, made other provision in advance of the date of such distribution for the satisfaction of such withholding obligations. In the event that
the Corporation cannot legally satisfy such withholding obligations by such reduction of shares, or in the event of a cash payment or any other withholding event in respect of the Stock Units, the Corporation (or a Subsidiary) shall be entitled to
require a cash payment by or on behalf of the Participant and/or to deduct from other compensation payable to the Participant any sums required by federal, state or local tax law to be withheld with respect to such distribution or payment.

 11. Notices. Any notice to be given under the terms of this Agreement shall be in writing and addressed to the Corporation
at its principal office to the attention of the Secretary, and to the Participant at the Participant’s last address reflected on the Corporation’s records, or at such other address as either party may hereafter designate in writing to the
other. Any such notice shall be given only when received, but if the Participant is no longer an employee of the Corporation, shall be deemed to have been duly given by the Corporation when enclosed in a properly sealed envelope addressed as
aforesaid, registered or certified, and deposited (postage and registry or certification fee prepaid) in a post office or branch post office regularly maintained by the United States Government. 
  

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 12. Plan. The Award and all rights of the Participant under this Agreement are subject to
the terms and conditions of the provisions of the Plan, incorporated herein by reference. The Participant agrees to be bound by the terms of the Plan and this Agreement. The Participant acknowledges having read and understanding the Plan, the
Prospectus for the Plan, and this Agreement. Unless otherwise expressly provided in other sections of this Agreement, provisions of the Plan that confer discretionary authority on the Board or the Administrator do not (and shall not be deemed to)
create any rights in the Participant unless such rights are expressly set forth herein or are otherwise in the sole discretion of the Board or the Administrator so conferred by appropriate action of the Board or the Administrator under the Plan
after the date hereof. 
 13. Entire Agreement. This Agreement and the Plan together constitute the entire agreement and
supersede all prior understandings and agreements, written or oral, of the parties hereto with respect to the subject matter hereof. The Plan and this Agreement may be amended pursuant to Section 8.6 of the Plan. Such amendment must be in
writing and signed by the Corporation. The Corporation may, however, unilaterally waive any provision hereof in writing to the extent such waiver does not adversely affect the interests of the Participant hereunder, but no such waiver shall operate
as or be construed to be a subsequent waiver of the same provision or a waiver of any other provision hereof. 
 14. Limitation on
Participant’s Rights. Participation in the Plan confers no rights or interests other than as herein provided. This Agreement creates only a contractual obligation on the part of the Corporation as to amounts payable and shall not be
construed as creating a trust. Neither the Plan nor any underlying program, in and of itself, has any assets. The Participant shall have only the rights of a general unsecured creditor of the Corporation with respect to amounts credited and benefits
payable, if any, with respect to the Stock Units, and rights no greater than the right to receive the Common Stock as a general unsecured creditor with respect to Stock Units, as and when payable hereunder. 
 15. Counterparts. This Agreement may be executed simultaneously in any number of counterparts, each of which shall be deemed an original
but all of which together shall constitute one and the same instrument. 
 16. Section Headings. The section headings of this
Agreement are for convenience of reference only and shall not be deemed to alter or affect any provision hereof. 
 17. Governing
Law. This Agreement shall be governed by and construed and enforced in accordance with the laws of the State of Maryland without regard to conflict of law principles thereunder. 
 18. Construction; Section 409A. It is intended that the terms of the Award will not result in the imposition of any tax liability
pursuant to Section 409A of the Code. This Agreement shall be construed and interpreted consistent with that intent. Notwithstanding any provision of this Agreement to the contrary, if the Participant is a “specified employee” as
defined in Code Section 409A, and, as a result of that status, any portion of the payments under this Agreement would otherwise be subject to taxation pursuant to Code Section 409A, the Participant shall not be entitled to any payments
upon a termination of his or her employment until the earlier of (i) the date which is six (6) months after his termination of employment for 
  

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 any reason other than death, or (ii) the date of the Participant’s death; provided the first such payment
thereafter shall include all amounts that would have been paid earlier but for such six (6) month delay. 
 [Remainder of page
intentionally left blank] 
  

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 IN WITNESS WHEREOF, the Corporation has caused this Agreement to be executed on its behalf by a
duly authorized officer and the Participant has hereunto set his hand as of the date and year first above written. 
  

			
	NATIONWIDE HEALTH PROPERTIES, INC.	 	PARTICIPANT
	A Maryland corporation	 	
		
	 	 	 
	By:______________________________________________	 	Signature
		
	Print Name:________________________________________	 	
		 	  

		 	Print Name
	Its:______________________________________________	 	

  

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 CONSENT OF SPOUSE 
 In consideration of the execution of the foregoing Stock Unit Award Agreement by Nationwide Health Properties, Inc., I,
                                        
                                        , the
spouse of the Participant therein named, do hereby join with my spouse in executing the foregoing Stock Unit Award Agreement and do hereby agree to be bound by all of the terms and provisions thereof and of the Plan. 
 Dated:
                                , 200     

 

	
	  

	Signature of Spouse
	  
  

	Print Name
	

  

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