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Exhibit 10.15  

         

  

 
 

INDEPENDENT CONTRACTOR AGREEMENT    
    

        This Independent Contractor Agreement ("Agreement") is made effective as of April 1, 2006 by and between the CyberKnife Society, a California
non-profit organization (the "Society"), and John Adler, M.D. ("Contractor" and, together with the Society, the "Parties"). The Society desires to retain Contractor as an independent
contractor to perform certain services for the Society and Contractor is willing to perform such services, on terms set forth more fully below. In consideration of the mutual promises contained
herein, the Parties agree as follows: 

1.     Services.  

        During the term of this agreement, Contractor will serve as President and, when applicable, President Emeritus of the Board of the Society, and will provide
services (the "Services") to the Society as described on Exhibit A attached to this Agreement.
Contractor shall use his best efforts to perform the Services to the satisfaction of the Society and by the completion dates specified by the Society. Contractor shall not perform any Services for the
Society other than as specifically authorized in Exhibit A. 

2.     Independent Contractor Status.  

        It is the Parties' intent that Contractor at all times, and with respect to all Services covered by this Agreement function as and remain an independent
contractor, and not an employee of the Society, and neither Party shall represent to third parties that Contractor is an employee of the Society. 

        (a)   Contractor
shall be responsible for the payment of all taxes on amounts received from the Society for the Services. The Society will regularly report amounts paid to
Contractor by filing Form 1099-MISC with the Internal Revenue service, as required by law. No part of Contractor's fees will be subject to withholding by the Society for payment of
any social security, federal, state or other employee payroll taxes. Contractor agrees to indemnify and hold the Society harmless from any liability for, or assessment of, any such taxes imposed on
the Society by relevant taxing authorities. 

        (b)   Contractor
shall retain the right to perform services for others during the term of this Agreement. 

        (c)   Contractor
will determine the method, details, and means of performing the Services. The Society shall have no right to, and shall not control, the manner or determine
the method of accomplishment of the Services, though it may define the Services to be performed. Such Services may be amended, from time-to-time, by the Parties by written
agreement, signed by the Contractor and the Society. 

        (d)   Contractor
may, at Contractor's own expense, employ such assistants as the Contractor may deem necessary to perform the Services. The Society shall not control, direct
or supervise the work of Contractor's assistants or employees in the performance of Services. The Contractor assumes full and sole responsibility for the quality of Services provided by the
Contractor's 

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assistants
or employees, for the payment of all compensation and expenses of these assistants and employees, for state and federal income taxes and other applicable payroll taxes and withholding that
may be required with respect to such assistants or employees, and for the provision of all benefits and insurance, including without limitation, Worker's Compensation Insurance, to such assistants or
employees. Contractor shall furnish the Society with proof of Worker's Compensation Insurance coverage for all persons who provide Services pursuant to this Agreement. 

        (e)   Contractor
shall be responsible for all expenses incurred in the execution of Contractor's responsibilities pursuant to this Agreement, including, without limitation,
all travel (including airfare and lodging), entertainment and dining expenses. No fines, taxes, bonds or fees imposed against Contractor, or costs of Contractor doing business, shall be reimbursable
by the Society. 

        (f)    Contractor
shall not be eligible to participate in any fringe benefit program or any benefit plan of the Society. 

        (g)   Contractor
shall have reasonable assistance from Society with respect to administrative support staff as needed in furtherance of his duties as President. 

        (h)   Contractor
shall have the use of an office and a conference room from Society as needed in furtherance of his duties as President. 

3.     Fees.  

        As consideration for the Services to be provided by Contractor, the Society will compensate Contractor as described in  Exhibit B to
this Agreement. Society will pay Contractor Contractor's annual compensation in quarterly installments of $19,000, such quarterly
installments to be paid in advance of each quarter beginning on the date on which this Agreement is signed by both Parties and thereafter on the first business day of each quarter. Contractor shall
submit quarterly invoices for all Services performed by Contractor during the applicable quarter two (2) weeks prior to the end of such quarter (for example, for the first quarterly period of
this Agreement, January 1, 2006 to March 31, 2006, Contractor's first quarterly invoice will be due to Society no later than March 17, 2006). If for any quarter, Contractor has
not provided the level of Services required to earn the full quarterly installment for such quarter, then the quarterly installment for Contractor for the following quarter will be reduced in an
amount equal to the amount that Contractor was overcompensated for the preceding quarter. If at the end of the term of this Agreement, Contractor has never performed certain services, and Contractor's
failure to perform such services has not been offset against any subsequent quarter's installment, then Contractor will reimburse Society the corresponding amount for the services not performed within
thirty (30) calendar days. The Parties acknowledge that payment for the Services provided hereunder is consistent with the fair market value of such Services. 

4.     Confidentiality.  

        (a)   Confidential Information. "Confidential Information" means Society proprietary information, technical data, trade secrets
or know-how, including, but not limited to, research, product plans, product specifications, services, customers, customer lists, pipeline documents, marketing plans and strategies,
software, developments, inventions, processes, formulas, technology, designs, drawings, engineering, hardware configuration information, circuit board designs, logic designs for filters and/or circuit
boards, Society financials or other business information disclosed by the Society either directly or indirectly in writing, orally, or by drawings or inspection of parts or equipment. Confidential
Information also includes any other information designated by the Society as such upon its disclosure to the Contractor. 

        (b)   Disclosure. Contractor will not, during or subsequent to the term of this Agreement, use the Society's Confidential
Information for any purpose whatsoever other than the performance of 

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the
Services on behalf of the Society. Contractor will not disclose the Society's Confidential Information to any third party, and understands that said Confidential Information shall remain the sole
property of the Society. Contractor further agrees to take all reasonable precautions to prevent any unauthorized disclosure of such Confidential Information including, but not limited to, having each
employee of Contractor, if any, with access to any Confidential Information, execute a nondisclosure agreement containing provisions in the Society's favor substantially similar to Sections 4, 5 and 6
of this Agreement. Confidential Information does not include information which, upon disclosure to Contractor is part of the public domain; can be established by written evidence to have been in the
possession of Contractor at the time of disclosure; is received by Contractor from a third party without restriction and without breach of this Agreement; or has become publicly known and made
generally available through no wrongful act of Contractor. If Contractor is required to disclose Confidential Information by lawfully issued subpoena or by an authorized order of a government agency,
Contractor will immediately so inform the Society, and will use best efforts to minimize the disclosure of such Confidential Information and will consult with and assist the Society in seeking a
protective order prior to such disclosure. 

        (c)   Indemnity. Contractor agrees that Contractor will not, during the term of this Agreement, improperly use or disclose to
the Society or any of its employees any proprietary information or trade secrets of any former or current employer or other person or entity with which Contractor has an agreement, or to which
Contractor has a duty, to keep in confidence information acquired by Contractor, and that Contractor will not bring onto the premises of the Society any unpublished document, proprietary information,
or trade secret belonging to such employer, person or entity unless consented to in writing by such employer, person or entity. Contractor will indemnify the Society and hold it harmless from and
against all claims, liabilities, damages and expenses, including reasonable attorneys' fees and costs of suit, arising out of or in connection with any violation or claimed violation of a third
party's rights resulting in whole or in part from the Services provided by Contractor under this Agreement. 

        (d)   Third Parties. Contractor recognizes that the Society has received and in the future will receive from third parties
their confidential or proprietary information or trade secrets subject to a duty on the Society's part to maintain the confidentiality of such information and to use it only for certain limited
purposes. Contractor agrees that Contractor owes the Society and such third parties, during the term of this Agreement and thereafter, a duty to hold all such confidential or proprietary information
or trade secrets in the strictest confidence and not to disclose it to any person, firm or corporation or to use it except as necessary in carrying out the Services for the Society consistent with the
Society's agreement with such third party. 

        (e)   Return of Confidential Information. Upon the termination of this Agreement, or upon the Society's earlier request,
Contractor will deliver to the Society all of the Society's property and all Confidential Information in tangible form that Contractor may have in Contractor's possession or control. 

5.     Ownership.  

        (a)   Inventions. Contractor agrees that all copyrightable material, notes, records, drawings, designs, inventions,
improvements, developments, discoveries and trade secrets (collectively, "Inventions") conceived, made or discovered by Contractor, solely or in collaboration with others, during the period of this
Agreement which relate in any manner to the business of the Society that Contractor may be directed to undertake, investigate or experiment with, or which Contractor may become associated with as a
result of work, investigation or experimentation in the line of business of Society in performing the Services hereunder, are the sole property of the Society. Contractor further agrees to assign (or
cause to be assigned) and does hereby assign fully to the Society all 

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such
Inventions and any copyrights, patents, mask work rights or other intellectual property rights relating thereto. 

        (b)   Assistance. Contractor agrees to assist Society, or its designee, at the Society's expense, in every proper way to secure
the Society's rights in the Inventions and any copyrights, patents, mask work rights or other intellectual property rights relating thereto in any and all countries, including the disclosure to the
Society of all pertinent information and data with respect thereto, the execution of all applications, specifications, oaths, assignments and all other instruments which the Society shall deem
necessary in order to apply for and obtain such rights and in order to assign and convey to the Society, its successors, assigns and nominees the sole and exclusive rights, title and interest in and
to such Inventions, and any copyrights, patents, mask work rights or other intellectual property rights relating thereto. Contractor further agrees that Contractor's obligation to execute or cause to
be executed, when it is in Contractor's power to do so, any such instrument or papers shall continue after the termination of this Agreement. 

        (c)   License. Contractor agrees that if in the course of performing the Services, Contractor incorporates into any Invention
developed hereunder any invention, improvement, development, concept, discovery or other proprietary information owned by Contractor or in which Contractor has an interest, the Society is hereby
granted and shall have a nonexclusive, royalty-free, perpetual, irrevocable, worldwide license to make, have made, modify, use and sell such item as part of or in connection with such
Invention. 

        (d)   Agent. Contractor agrees that if the Society is unable because of Contractor's unavailability for any reason to secure
Contractor's signature to apply for or to pursue any application for any United States or foreign patents or mask work or copyright registrations covering the Inventions assigned to the Society above,
then Contractor hereby irrevocably designates and appoints the Society and its duly authorized officers and agents as Contractor's agent and attorney-in-fact, to act for and in
Contractor's behalf and stead to execute and file any such applications and to do all other lawfully permitted acts to further the prosecution and issuance of patents, copyright and mask work
registrations thereon with the same legal force and effect as if executed by Contractor. 

6.     Originality and Noninfringement.  

        Contractor represents and warrants that all materials and Services provided hereunder will be original with Contractor and that the use thereof by the Society or
its customers, representatives, distributors or dealers will not infringe any patent, copyright, trade secret or other intellectual property right of any third party. Contractor agrees to indemnify
and hold the Society harmless against any liability, loss, cost, damage, claims, demands or expenses (including reasonable attorneys' fees) of the Society or its customers, representatives,
distributors or dealers arising out of any infringement or claim of infringement with respect to any materials or Services provided by Contractor. 

7.     Reports.  

        Contractor agrees that Contractor will, from time-to-time during the term of this Agreement, keep the Society informed as to Contractor's
progress in performing the Services hereunder and that Contractor will, as requested by the Society, prepare written reports with respect thereto. The Parties understand that the time required in the
preparation of such written reports shall be considered time devoted to the performance of Contractor's Services. 

8.     Conflicting Obligations.  

        (a)   Performance. Contractor acknowledges that Contractor will be available to perform the Services in a timely and
responsible manner, except for occasional circumstances in which a 

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pre-existing
clinical responsibility on the part of Contractor may conflict with a new commitment requested by the Society, subject to the requirements of the schedule of Services arranged
by Society and Contractor pursuant to Section 1.3 of Exhibit A hereto. Failure to perform in a timely and responsible manner shall be a breach of this Agreement. 

        (b)   No Conflicts. Contractor represents and warrants that Contractor has no outstanding agreement or obligation that is in
conflict with any provision of this Agreement, or that would preclude Contractor from complying with the provisions hereof, other than as disclosed on  Exhibit C hereto. Contractor further
represents and warrants that Contractor will not enter into any such conflicting Agreement during the term
of this Agreement. 

9.     Term and Termination.  

        (a)   Commencement. This Agreement will commence on the date first above written and will continue for a period of one year
(the "Initial Term"). Unless 30 days' written notice of termination is given by either Party prior to the expiration of the Initial Term, or any subsequent Term, this Agreement shall renew for
successive one-year periods. 

        (b)   Termination. This Agreement may be terminated as follows: 

          (i)  Either
Party may terminate this Agreement with 30 days' prior written notice to the other. Any such notice shall be addressed to such Party at the address shown
below or such other address as such Party shall provide to the other, and shall be deemed given upon delivery if personally delivered, on the next business day if sent via overnight courier, or three
days after deposit in the United States mail, postage prepaid, registered or certified mail, return receipt requested. 

         (ii)  The
Parties shall attempt to amend this Agreement upon receipt of any Governmental Action in order to comply with such Governmental Action. If the Parties, acting in
good faith, are unable to make the amendments necessary to comply with such Governmental Action, or, alternatively, if either Party determines in good faith that compliance with the Governmental
Action is impossible or infeasible, this Agreement shall terminate 10 days after one Party notifies the other of such fact. For
purposes of this Section 9(b)(ii), the term "Governmental Action" shall mean any legislation, regulation, rule or procedure passed, adopted or implemented by any federal, state or local
government or legislative body or any private agency, or any notice of a decision, finding, interpretation or action by any governmental or private agency, court or other third party which, in the
opinion of counsel to the Society, because of the arrangement between the Parties pursuant to this Agreement, if or when implemented, would: (A) constitute a violation of any federal, state or
local law; or (B) subject either Party, or any of their respective employees or agents, to civil or criminal liability or prosecution on the basis of their participation in executing this
Agreement or performing their respective obligations under this Agreement 

        (iii)  If
this Agreement is terminated for any reason within one-year of the date first above written, the Parties shall not enter into the same or substantially
the same arrangement contemplated by this Agreement during the period which is one-year following the date first above written. 

        (c)   Survival. Upon such termination, all rights and duties of the Parties toward each other shall cease except: 

          (i)  that
the Society shall be obliged to pay, within 30 days of receipt of the Contractor's invoice, all amounts owing to Contractor for unpaid Services through the
termination date; and 

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         (ii)  Sections
4, 5, 6, 9 and 11 shall survive termination of this Agreement. 

10.   Assignment.  

        Neither this Agreement nor any right hereunder or interest herein may be assigned or transferred by the Society or the Contractor without the written consent of
the other. 

11.   Arbitration and Equitable Relief.  

        (a)   Arbitration. Except as provided in Section 11(b) below, the Society and Contractor agree that any dispute or
controversy arising out of or relating to any interpretation, construction, performance or breach of this Agreement shall be settled by arbitration to be held in Santa Clara County, California before
a single, neutral arbitrator associated with the Judicial Arbitration and Mediation Service ("JAMS"). The arbitrator shall be selected by the Parties or, if the Parties are unable to agree, by JAMS,
in accordance with its selection practices. The arbitrator may grant injunctions or other relief in such dispute or controversy. The decision of the arbitrator shall be final, conclusive, and binding
on the Parties to the arbitration. Judgment may be entered on the arbitrator's decision in any court of competent jurisdiction. Unless otherwise required to preserve the enforceability of this
arbitration clause, the Society and Contractor shall each pay one-half of the costs and expenses of such arbitration. 

        (b)   Equitable Relief. Contractor agrees that it would be impossible or inadequate to measure and calculate the Society's
damages from any breach of the covenants set forth in Section 4 or 5 herein. Accordingly, Contractor agrees that if Contractor breaches Sections 4 or 5, the Society will have available, in
addition to any other right or remedy available, the right to obtain from any court of competent jurisdiction an injunction restraining such breach or threatened breach and specific performance of any
such provision. Contractor further agrees that no bond or other security shall be required in obtaining such equitable relief and Contractor hereby consents to the issuances of such injunction and to
the ordering of such specific performance. 

12.   Miscellaneous.  

        (a)   Amendments and Waivers. Any term of this Agreement may be amended or waived only with the written consent of the Parties. 

        (b)   Entire Agreement. This Agreement, including the Exhibits hereto, constitutes the entire agreement of the Parties and
supersedes and replaces all oral negotiations and prior writings with respect to the subject matter hereof. 

        (c)   Notices. Any notice required or permitted by this Agreement shall be in writing and shall be deemed sufficient upon
receipt, when delivered personally or by courier or overnight delivery service, or three (3) days after being deposited in the regular mail as certified or registered mail (airmail if sent
internationally) with postage prepaid, if such notice is addressed to the party to be notified at such party's address or facsimile number as set forth below, or as subsequently modified by written
notice. 

        (d)   Governing Law. The validity, interpretation, construction and performance of this Agreement shall be governed by the laws
of the State of California, without giving effect to its principles of conflict of laws. 

        (e)   Legal Fees. If any dispute arises between the Parties with respect to matters covered by this Agreement which leads to a
proceeding, pursuant to Section 12, to resolve such dispute, the prevailing party in any such proceeding shall be entitled to receive its reasonable attorneys' fees, expert witness fees and
out-of-pocket costs incurred in connection with such proceeding, in addition to any other relief to which it may be entitled. 

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        (f)    Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, then such
unenforceable provision shall be deemed modified so as to be enforceable (or if not subject to modification then eliminated herefrom) for the purpose of those procedures to the extent necessary to
permit the remaining provisions to be enforced. 

        (g)   Counterparts. This Agreement may be executed in counterparts, each of which shall be deemed an original, but all of which
together will constitute one and the same instrument. 

        (h)   Advice of Counsel. EACH PARTY ACKNOWLEDGES THAT, IN EXECUTING THIS AGREEMENT, SUCH PARTY HAS HAD THE OPPORTUNITY TO SEEK
THE ADVICE OF INDEPENDENT LEGAL COUNSEL, AND HAS READ AND UNDERSTOOD ALL OF THE TERMS AND PROVISIONS OF THIS AGREEMENT. THIS AGREEMENT SHALL NOT BE CONSTRUED AGAINST ANY PARTY BY REASON OF THE
DRAFTING OR PREPARATION HEREOF. 

        (i)    Compliance with Laws. The Parties agree to abide by the Society's compliance policies and all
federal, state or local laws, regulations, ordinances or other legal requirements in connection with the performance of the Services hereunder. In addition, at all times during this Agreement,
Contractor shall have in effect all licenses, permits and authorizations for all local, state, federal and foreign governmental agencies to the extent the same are necessary to the performance of the
Services hereunder and will verify all such licenses, permits and authorizations are in place before performing any Services under this Agreement. Consultant shall not perform any Services under this
Agreement for which he does not hold all necessary licenses, permits and authorizations and will hold the Society harmless in all respects for any claims or actions resulting from Contractor's
violation of this provision. 

        [SIGNATURE PAGE FOLLOWS]

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

	JOHN ADLER, M.D.	 	THE CYBERKNIFE SOCIETY
	

Signature:	
 	

/s/ John Adler
	
 	

Signature:	
 	

/s/ Kristine Gagliardi

	

Name:	
 	

John Adler, M.D.
	
 	

Name:	
 	

Kristine Gagliardi

	

Title:	
 	

Contractor
	
 	

Title:	
 	

Administrative Director of CyberKnife Society

	

Address:	
 	

    
	
 	

Address:	
 	

1310 Chesapeake Terrace

	

 	
 	

    
	
 	

 	
 	

Sunnyvale, CA 94089

	

Telephone:	
 	

    
	
 	

Telephone:	
 	

  

	

Date:	
 	

3/29/06
	
 	

Date:	
 	

4/5/06

	

 	

 	

 	

 	

Signature:	

 	

/s/ Darren Milliken

	

 	
 	

 	
 	

Name:	
 	

Darren Milliken

	

 	
 	

 	
 	

Address:	
 	

1310 Chesapeake Terrace

	

 	
 	

 	
 	

 	
 	

Sunnyvale, CA 94089

	

 	
 	

 	
 	

Title:	
 	

General Counsel

	

 	
 	

 	
 	

Date:	
 	

4/4/06

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EXHIBIT A    
    
    SERVICES    
    

	1.
	Description of Services.

	1.1.
	Contractor
will serve as the President of the Society with such duties and responsibilities as are customarily associated with such position and as set forth in the Society's Bylaws.
In addition, Consultant shall perform the following functions and duties:

	1.1.1.
	Users' Meeting. Contractor will attend and participate in the annual Users' Meeting for four (4) days per year. Contractor's
participation in the annual Users' Meeting will include, but is not limited to: chairing all scientific sessions and Society breakout sessions, reviewing all abstracts and selecting oral presentations
and awards and participating in the PDC quarterly meeting at the Users' Meeting.

	1.1.2.
	PDC Meetings. Contractor will attend and participate in certain PDC Meetings, as requested by the Society, up to two (2) per
year with each lasting two (2) days, but excluding the PDC Meeting held at the annual Users' Meeting. Contractor's participation in such PDC Meetings will include, but is not limited to
consulting with surgical specialists and radiation oncologists to develop new procedures using the CyberKnife.

	1.1.3.
	Publications/Books. Contractor will use his contacts within the industry to drive other individuals to write and publish
publications on Robotic Radiosurgery at Stanford University and at other sites. Contractor will also author at least three (3) publishable peer-reviewed articles or chapters in a
book on Robotic Radiosurgery, as requested by Society, including at least one (1) publishable peer-reviewed article that involves other CyberKnife centers or is a multi-center
study.

	1.1.4.
	Society's Website. Contractor will write and edit at least two (2) pages per month on the Society's website, as requested by
Society. Contractor will also participate each week in the online discussion board on the Society's website. Contractor will attend and participate in the monthly online meetings and webcast on the
Society's website.

	1.1.5.
	Task Force. Contractor will participate in a task force advising the leadership of AANS/CNS on professional fees for Robotic
Radiosurgery using the CyberKnife.

	1.2.
	The
Parties acknowledge that the Society intends to appoint a new President during the term of this Agreement. Upon the appointment of a new President of the Society, Contractor
shall assume the title of President Emeritus. As President Emeritus:

	1.2.1.
	Contractor
shall no longer be responsible for the duties and responsibilities that are customarily associated with, or which are enumerated in the Society's Bylaws for, the
position of President, however, Contractor will aid in the transition of the new President and help to educate the new President on the Society.

	1.2.2.
	Contractor
shall continue to perform those functions and duties set forth in Sections 1.1.1 through 1.1.5 above.

	1.3.
	As
soon as practicable following the execution of this Agreement, Contractor and the Society shall meet to schedule the specific Services to be performed during the first calendar
quarter that this Agreement is in effect. Thereafter, Contractor and the Society shall meet at least thirty (30) days in advance of the end of each calendar quarter to schedule the Services to
be performed during the subsequent calendar quarter. 

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EXHIBIT B    
    
    COMPENSATION    
    

	

1.	
 	
President Compensation. Contractor shall be compensated for Services performed according to this Agreement as President or President Emeritus, as applicable, as follows:
	

 	
 	

1.1.	
 	
Compensation for Users' Meeting:
	

 	
 	

 	
 	

•	
 	

Attendance/Participation in annual Users' Meeting:	
 	

$3,375 per day
	

 	
 	

 	
 	

•	
 	

Maximum Annual Compensation for Attendance/Participation in annual Users' Meeting:*	
 	

$13,500 per year
	

 	
 	

 	
 	

 	
 	

* (maximum annual compensation for Users' Meeting is based on the maximum attendance/participation of 4 days per year)
	

 	
 	

1.2.	
 	
Compensation for PDC Meetings:	
 	

 
	

 	
 	

 	
 	

•	
 	

Attendance/Participation in certain PDC Meetings:	
 	

$7,000 per meeting
	

 	
 	

 	
 	

•	
 	

Maximum Annual Compensation for Attendance/Participation in PDC Meetings:*	
 	

$14,000 per year
	

 	
 	

 	
 	

 	
 	

* (maximum annual compensation for PDC Meetings is based on the maximum attendance/participation of 2 PDC Meetings per year)
	

 	
 	

1.3.	
 	
Compensation for Publications/Books:	
 	

 
	

 	
 	

 	
 	

•	
 	

Drive Publications on Robotic Radiosurgery/Articles or Chapters in Robotic Radiosurgery Book:	
 	

$23,500 per year
	

 	
 	

1.4.	
 	
Compensation for Society's Website:
	

 	
 	

 	
 	

•	
 	

Writing/Editing pages on Society's website; participating in online discussion board and online meetings/webcast:	
 	

$20,000 per year
	

 	
 	

1.5.	
 	
Compensation for Participating in Task Force:	
 	

 
	

 	
 	

 	
 	

•	
 	

Participate in task force advising leadership of AANS/CNS on professional fees for CK Radiosurgery:	
 	

$5,000 per year
	

 	
 	

1.6.	
 	
Total Compensation/Payment. As indicated above, Contractor's maximum possible annual compensation from Society is $76,000 to be paid quarterly in advance, in four (4) equal installments
of $19,000 per quarter beginning on the day that this Agreement is signed by both Parties and thereafter on the first business day of each quarter. Should Contractor not perform certain of the above objectives, then future quarterly payments to
Contractor may be offset by the corresponding amount of the Services not performed. If at the end of the term of this Agreement, certain Services were not performed, and Contractor's failure to perform such services has not been offset against any
subsequent quarter's installment, then Contractor shall reimburse Society for the corresponding amount of the services not performed within thirty (30) calendar days.

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EXHIBIT C    
    
    LIST OF POTENTIAL CONFLICTS    
    

—none—

/s/ DM 

11

 
 

[ACCURAY LOGO]    
    

 
 

AMENDMENT ONE TO INDEPENDENT CONTRACTOR AGREEMENT    
    

        This Amendment One to Independent Contractor Agreement ("Amendment") is made, effective as of October 3, 2006 ("Effective Date"), by and between Accuray
Incorporated, a California Corporation with offices located at 1310 Chesapeake Terrace, Sunnyvale, California 94089, ("Accuray"), and John Adler, M.D. ("Contractor"), each separately being a "Party"
and collectively the "Parties." 

        On
April 4, 2006, Contractor and The CyberKnife Society ("CKS"), a California non-profit organization, entered into an Independent Contractor Agreement (the
"Agreement") whereby Contractor agreed to provide certain services to CKS as an independent contractor and, in exchange, CKS agreed to provide Contractor with certain compensation. On
October 3, 2006 (the "Dissolution Date"), CKS filed a Certificate of Dissolution with the California Secretary of State. In connection with the dissolution of CKS, Accuray agreed that it would
assume all of the obligations and responsibilities of CKS, including the Agreement. In consideration of the mutual promises contained in this Amendment, the Parties want to amend the Agreement on the
terms and conditions set forth herein. 

        The
Parties hereby agree as follows: 

	1.
	As
of the Dissolution Date, Accuray agrees to assume all of CKS' rights and obligations under the Agreement and Contractor consents to such assumption by Accuray.

	2.
	As
of the Dissolution Date, all references to the "CyberKnife Society" or the "Society" in the Agreement shall be deemed to refer to Accuray.

	3.
	All
provisions of the Agreement, except as expressly modified by this Amendment, will remain in full force and effect and are hereby ratified and reaffirmed. In the case of direct
conflict or conflict by reason of interpretation between any provision of this Amendment and the Agreement, this Amendment shall control and supersede the terms of the Agreement.

	4.
	This
Amendment, in combination with the Agreement, contains the entire agreement of the Parties hereto with respect to the subject matter hereof, and supersedes all prior
understandings, representations and warranties, written and oral. 

[SIGNATURE PAGE FOLLOWS]

 
 

[ACCURAY LOGO]    
    

        IN
WITNESS WHEREOF, the Parties have caused this Amendment to be executed as of the Effective Date by their duly authorized representatives. The Parties acknowledge and agree that this
Amendment does not become effective until it has been signed by all parties indicated below. 

	 
	 	 
	 	 
	 	 

	JOHN ADLER, M.D.	 	ACCURAY, INCORPORATED
	

Signature:	
 	

/s/  JOHN ADLER      
	
 	

Signature:	
 	

/s/  ERIC LINDQUIST      

	

Name:	
 	

John Adler, M.D.
	
 	

Name:	
 	

Eric Lindquist

	

Title:	
 	

Contractor
	
 	

Title:	
 	

SVP, Chief Marketing Officer

	

Address:	
 	

    
    
	
 	

Address:	
 	

1310 Chesapeake Terrace
Sunnyvale, CA 94089

	

Telephone:	
 	

    
	
 	

Telephone:	
 	

	

Date:	
 	

	
 	

Date:	
 	

	

 	
 	

 	
 	

Signature:	
 	

/s/  DARREN MILLIKEN      

	

 	
 	

 	
 	

Name:	
 	

Darren Milliken

	

 	
 	

 	
 	

Title:	
 	

General Counsel

	

 	
 	

 	
 	

Address:	
 	

1310 Chesapeake Terrace
Sunnyvale, CA 94089

	

 	
 	

 	
 	

Telephone:	
 	

	

 	
 	

 	
 	

Date:	
 	

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INDEPENDENT CONTRACTOR AGREEMENT

EXHIBIT A SERVICES

EXHIBIT B COMPENSATION

EXHIBIT C LIST OF POTENTIAL CONFLICTS

[ACCURAY LOGO]

AMENDMENT ONE TO INDEPENDENT CONTRACTOR AGREEMENT

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Exhibit 10.16  

Execution Version

 
 

LICENSE AGREEMENT    
    

        This License Agreement is made as of the 12th day of December, 2004 (the "Effective Date"), by and between Accuray
Incorporated, a California corporation ("Licensor"), and American Science and Engineering, Inc., a Massachusetts corporation
("Licensee"). Licensee and Licensor are each sometimes referred to herein as a "Party" and collectively
as the "Parties." 

Background  

        Licensor and Licensee are also parties to an Asset Purchase Agreement dated December 12, 2004 ("Asset Purchase
Agreement"). Under the Asset Purchase Agreement, Licensor is purchasing the Acquired Assets (as defined therein) from the Licensee, including the Intellectual Property (as
defined therein, including without limitation, the Division Documentation pertaining to the Intellectual Property). 

        To
allow Licensee to use the Intellectual Property in various lines of business, Licensee desires to obtain a license from Licensor of the Intellectual Property. Licensor is willing to
grant Licensee such a license on the terms and conditions stated in this License Agreement. 

        Therefore,
in consideration of the agreements contained in this License Agreement and in the Asset Purchase Agreement, and for other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Parties agree as follows: 

1.    Definitions.    

	1.1
	"Affiliate" means with respect to any Person, any other Person that controls, is controlled by or is under common control with such
Person.

	1.2
	"Homeland Security Market" means detection systems for use by domestic and foreign commercial, government and military customers for
security related purposes including force protection for the Department of Defense, but in no event including any medical application.

	1.3
	"Non-Destructive Testing Market" means world-wide detection and inspection systems for use in government and
commercial non-destructive evaluation of finished product or component quality, but in no event including any medical application.

	1.4
	"Person" means an individual, company, corporation, partnership, joint venture, limited liability company, association, trust,
unincorporated organization, or other entity, domestic or foreign, including a government or political subdivision or an agency or instrumentality thereof.

	1.5
	"X-Ray Target Technology" means the High Power X-ray Target Design technology identified in Schedule 3.9
of the Asset Purchase Agreement, and any technical information relating thereto.

	1.6
	All
other capitalized terms not defined in this License Agreement have the meaning given them in the Asset Purchase Agreement. 

2.    License Grants.    

	2.1
	Exclusive License. Subject to the terms and conditions of this License Agreement, Licensor grants Licensee an irrevocable, exclusive
(even as to Licensor), worldwide, fully paid license of the Intellectual Property solely for use in connection with the design, development, marketing, manufacturing, sales and service of products
intended for use in the Homeland Security Market and the Non-Destructive Testing Market. 

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	2.2
	Non-exclusive License. Subject to the terms and conditions of this License Agreement, Licensor grants Licensee a
non-exclusive, worldwide, fully paid license of the Intellectual Property for all uses other than (i) those referred to in Section 2.1 above and (ii) medical use or
applications.

	2.3
	No further rights. Except as otherwise expressly stated in this License Agreement, Licensor retains all right, title and interest in
and to the Intellectual Property.

	2.4
	Licenses to New Developments. Subject to the terms and conditions of this License Agreement, Licensee grants to Licensor (i) an
exclusive, worldwide, fully paid license under any intellectual property rights that Licensee may obtain with respect to any modifications, improvements, enhancements or new developments (whether
patentable or not) arising from the Intellectual Property ("Licensee Improvements") for medical uses or applications, and (ii) a non-exclusive, worldwide, fully paid license with
respect to such Improvements for all uses other than those described in Section 2.1 above. Subject to the terms and conditions of this License Agreement, Licensor grants to Licensee
(i) an exclusive, worldwide, fully paid license under any intellectual property rights that Licensor may obtain with respect to any modifications, improvements, enhancements or new developments
(whether patentable or not) arising from the Intellectual Property ("Licensor Improvements") for use in connection with the design, development, marketing, manufacturing, sales and service of products
intended for use in the Homeland Security Market and the Non-Destructive Testing Market, and (ii) a non-exclusive, worldwide, fully paid license with respect to such
Improvements for all uses other than medical uses or applications. Notwithstanding the foregoing grant of licenses with respect to Licensor Improvements and Licensee Improvements, neither party shall
have any obligation to advise the other party regarding the existence of such Improvements or to deliver any Improvement to the other party or any information or documentation with respect thereto. 

3.    Patent Rights Subject to Reversion    

	3.1
	For
a period of one year commencing on the Closing Date (the "Filing Period"), Licensor shall have the right, in its sole discretion, to file one or more patent applications for any
of the inventions included in the X-Ray Target Technology. If Licensor chooses to file a patent application during the Filing Period, it shall notify the Licensee of the filing of
the patent application within thirty (30) days of the day the patent application is filed. If upon the expiration of the Filing Period Licensor has not filed a patent application for any
invention included in the X-Ray Target Technology, Licensor hereby grants to Licensee the right, which right may be exercised in Licensee's sole discretion, at Licensee's sole cost and
expense, to file a patent application for such invention at any time thereafter, but such application shall be solely within Licensee's fields of exclusivity as set forth in Section 2.1,
unless otherwise agreed in writing by Licensor.

	3.2
	If
at any time during the Filing Period, or following expiration of the Filing Period, but before publication of any patent application that Licensee may thereafter elect to file,
either Licensor or Licensee intends, through commercialization or otherwise, to disclose subject matter pertaining to the X-Ray Target Technology, notice shall be provided to the other
party not less than thirty (30) days prior to any such disclosure.

	3.3
	Nothing
set forth in this Section 3 is intended to reduce or restrict the licenses granted to Licensee pursuant to Section 2 and any patents obtained by Licensor with
respect to the X-Ray Target Technology shall be deemed Licensor Improvements. 

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	3.4
	In
the event that Licensee is granted and exercises the right to file a patent application as set forth in Section 3.1, any resulting patent(s) shall be deemed Licensee
Improvements and subject to the licenses granted to Licensor in Section 2.4. 

4.    Warranties.    

	4.1
	Negation. Licensee acknowledges that, before the effective date of this License Agreement, Licensee controlled the Intellectual
Property, and that it is therefore reasonable for Licensor to not provide any representations or warrantees with respect to the Intellectual Property or the licenses granted in this License Agreement.
LICENSOR THUS PROVIDES ALL RIGHTS GRANTED LICENSEE UNDER THIS LICENSE AGREEMENT AS IS, AS AVAILABLE, WHERE IS AND WITH ALL FAULTS. Among other things, Licensor disclaims any and all warranties,
whether express or implied, including by not limited to any implied warranty of merchantability, of fitness for a particular purpose, of title, of non-infringement or arising out of any
course of dealing.

	4.2
	No Indirect Liability. For the same reasons, Licensee acknowledges and agrees that Licensor shall have no liability for any special,
consequential, lost profits, expectation, punitive or other indirect damages in connection with any claim arising out of or related to this License Agreement, including but not limited to damages for
loss of business profits and/or business interruption, whether foreseeable or not, and whether grounded in tort (including negligence), strict liability, contract, or otherwise, even if Licensor has
been advised of the possibility of such damages.

	4.3
	By Licensee. Licensee represents and warrants that it has full corporate power and authority and has taken all required corporate
action necessary to permit it to execute and deliver and to carry out the terms of this License Agreement and none of such actions will violate any law, rule, regulation, statute or ordinance
applicable to Licensee, violate any provisions of Licensee's Articles of Organization or By-Laws, each as amended, or result in any breach of, or default under, under any agreement,
instrument, order or judgment to which Licensee is a party or by which any of its assets may be bound. Licensee further represents and warrants that this License Agreement constitutes the valid and
legally binding obligation of Licensee enforceable against Licensee in accordance with its respective terms, subject to applicable bankruptcy, insolvency, moratorium, reorganization and other general
laws affecting the rights and remedies of creditors and general principles of equity, whether considered in a proceeding in equity or at law. 

        5.    Indemnification.    

	5.1
	Licensee
agrees to indemnify, defend and hold Licensor, its Affiliates, and their respective officers, directors, employees and agents (collectively, the
"Indemnitees") harmless from and against any claim of any kind and will pay any costs, damages and reasonable attorneys' fees incurred or attributable
to such claim arising out of or related to the exercise of any rights granted Licensee under this License Agreement or the breach of this License Agreement by Licensee (except, in either case, to the
extent attributable to Licensor's breach of this License Agreement or the Asset Purchase Agreement).

	5.2
	When
making a claim for indemnification hereunder, the Indemnitee(s) shall notify Licensee of the claim in writing, describing the claim, the amount thereof, and the basis therefor.
Licensee shall respond to each such claim within thirty (30) days of receipt of such notice. If such demand is based on a claim by a third party, Licensee shall have the right to assume control
of the defense thereof, including at its own expense, employment of counsel satisfactory to the Indemnitee(s), and, in connection therewith, the Indemnitee(s) shall reasonably cooperate to make
available to Licensee all pertinent information under its control. 

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No
settlement may be made by Licensee without the consent of Licensor, unless: i) such settlement only requires the payment of money damages and all such amounts are paid in full by Licensee;
and ii) Licensor and the Indemnitee(s) are released from all claims of the relevant third party or parties. Licensor may, at its own expense, participate in any proceeding relating to any such
claims as to which Licensee has assumed control pursuant to this License Agreement. 

6.    Termination.    

	6.1
	This
License Agreement and the licenses granted by Licensor to Licensee hereunder may be terminated by Licensor for any material breach by Licensee (including but not limited to
acting outside the scope of the licenses granted herein or breaching the limitations on assignment or transfer). Licensor shall have a period of sixty (60) days from the date it first learns of
the breach to provide Licensee with written notice of the breach, such notice to include details of the alleged breach. Licensee shall than have sixty (60) days from the date it receives such
notice to respond in writing to Licensor explaining why no breach has occurred or Licensee's plan to cure such breach. If after receiving such response, Licensor continues to believe a breach exists
and/or agrees with Licensee's proposed plan to cure such breach, Licensee shall have sixty (60) days from receipt by Licensor of the Licensee's response to cure the breach. Nothing contained in
this Section 5.1 shall limit or preclude Licensor from seeking immediate equitable relief in the event that Licensee acts outside the scope of the licenses granted or discloses Licensor's trade
secrets.

	6.2
	Bankruptcy. If Licensee becomes the subject of a voluntary or involuntary petition in bankruptcy or of any proceeding relating to
insolvency, receivership, liquidation, or composition for the benefit of creditors, and such petition or proceeding is not dismissed within sixty (60) days after filing, Licensor may terminate
the rights, licenses, immunities and covenants granted hereunder to Licensee upon thirty (30) days written notice of termination to Licensee. 

7.    Miscellaneous.    

	7.1
	Notices. All notices to a Party hereto shall be in writing and delivered in person or mailed by certified mail, return receipt
requested, or sent by Federal Express with receipt showing acceptance signature, to such Party at its address set forth below (or such other address as it may from time to time designate in writing to
the other Party): 

If
to Licensor:

Accuray Incorporated

1310 Chesapeake Terrace

Sunnyvale, CA 94089 

with
a copy to: 

Ralph
Pais

Fenwick & West LLP

801 California Street

Mountain View, CA 94041 

If
to Licensee:

American Science and Engineering, Inc. 

with
a copy to:

Ropes & Gray LLP

One International Place

Boston, MA 02110

Attention: David B. Walek 

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Notice
shall be deemed given upon receipt, on the next business day in the case of Federal Express delivery, and on the third business day after mailing in the case of mailing. 

	7.2
	Reasonable Assurances. Each Party agrees that it will execute and deliver, or cause to be executed and delivered, on or after the date
of this License Agreement, all such other instruments and will take all reasonable actions as the other Party may reasonably request from time to time in order to effectuate the provisions and
purposes of this License Agreement.

	7.3
	No Waiver. No waiver or failure to insist upon strict compliance with any obligation, covenant, agreement or condition of the License
Agreement shall operate as a waiver of, or an estoppel with respect to any subsequent or other failure.

	7.4
	Amendments and Waivers. This License Agreement may be modified or amended only by a writing signed by the Parties. No waiver of any
term or provision hereof shall be effective unless in writing signed by the Party waiving such term or provision.

	7.5
	Governing Law. This License Agreement shall be governed by, and construed in accordance with, the laws of the State of California,
without regard as to principles of conflicts of law.

	7.6
	Headings, Interpretation. The headings in this License Agreement have been included solely for ease of reference and shall not be
considered in the interpretation or construction of this License Agreement. All references herein to the masculine, neuter or singular shall be construed to include the masculine, feminine, neuter or
plural, as appropriate.

	7.7
	Binding Effect and Benefits; Assignment. This License Agreement shall be binding upon and shall inure to the benefit of the Parties and
their respective heirs, successors and assigns. Notwithstanding the foregoing, in no event may Licensee assign this License Agreement (whether by operation of law, upon a change of control or
otherwise) without the prior written consent of Licensor to any party that manufactures or sells products for medical uses or applications which have substantially similar purposes to those products
manufactured or sold by the Licensor on the date hereof. Any attempted assignment, transfer or delegation, without such consent, will be void.

	7.8
	Entire Agreement. This writing embodies the entire agreement and understanding between the Parties with respect to the transaction
contemplated herein and supersedes all prior discussions, understandings and agreements concerning such matters, except for the Asset Purchase Agreement, and other documents executed pursuant thereto,
all of which agreements remain in full force and effect.

	7.9
	Counterparts. This License Agreement may be executed in one or more counterparts, each of which shall constitute an original and all of
which taken together shall constitute one and the same instrument, and any of the Parties hereto may execute this License Agreement by signing any such counterpart.

	7.10
	No Third Party Rights. This License Agreement is not intended and shall not be construed to create any rights in any Persons other
than Licensor and Licensee and no Person shall assert any rights as third party beneficiary hereunder.

	7.11
	Expenses. Each Party shall bear the expenses incurred by it relating to the transactions contemplated by this License Agreement,
including without limitation fees and expenses of counsel. 

[Remainder of page left blank intentionally.]

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        IN
WITNESS WHEREOF, the parties hereto have duly executed and delivered this License Agreement as a sealed instrument as of the date first above written. 

	 	 	ACCURAY INCORPORATED
	

 	
 	

By:	

/s/  EUAN S. THOMSON      

	 	 	Name:	Euan S. Thomson
	 	 	Title:	President and CEO

	

    	
 	

AMERICAN SCIENCE AND ENGINEERING, INC.
	

 	
 	

By:	

/s/  ANTHONY R. FABIANO      

	 	 	 	Name: Anthony R. Fabiano
	 	 	 	Title: President and CEO

6

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LICENSE AGREEMENT

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