Document:

Form of Medium-Term Notes, Series K, Notes Linked to 3 Month LIBOR

 Exhibit 4.1 
 [Face of Note] 
 Unless this certificate is presented by an authorized
representative of The Depository Trust Company, a New York corporation (“DTC”), to the Company or its agent for registration of transfer, exchange or payment, and any certificate issued is registered in the name of Cede &
Co. or in such other name as requested by an authorized representative of DTC (and any payment is made to Cede & Co. or such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE OR OTHER USE HEREOF FOR
VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein. 
  

			
	CUSIP NO. 94986RLV1	  	PRINCIPAL AMOUNT: $        
	REGISTERED NO.    	  	

 WELLS FARGO & COMPANY 

MEDIUM-TERM NOTE, SERIES K 
 Due Nine Months or More From Date of Issue 
 Notes Linked to 3 Month
LIBOR due October 19, 2020 
 WELLS FARGO & COMPANY, a corporation duly organized and existing under the laws
of the State of Delaware (hereinafter called the “Company,” which term includes any successor corporation under the Indenture hereinafter referred to), for value received, hereby promises to pay to CEDE & Co., or registered
assigns, the principal sum of             ($            ) on October 19, 2020 (the “Stated Maturity
Date”) and to pay interest thereon from October 19, 2012 or from the most recent Interest Payment Date to which interest has been paid or duly provided for quarterly on January 19, April 19, July 19 and October 19,
commencing January 19, 2013, and at Maturity (each, an “Interest Payment Date”), at the rate per annum specified below until the principal hereof is paid or made available for payment. The interest so payable, and punctually
paid or duly provided for, on any Interest Payment Date will, as provided in the Indenture, be paid to the Person in whose name this Security (or one or more Predecessor Securities) is registered at the close of business on the Regular Record Date
for such interest next preceding such Interest Payment Date. The Regular Record Date for an Interest Payment Date shall be one Business Day prior to such Interest Payment Date. If an Interest Payment Date is not a Business Day, interest on this
Security shall be payable on the next day that is a Business Day, with the same force and effect as if made on such Interest Payment Date, and without any interest or other payment with respect to the delay. “Business Day” shall
mean a day, other than a Saturday or Sunday, (i) that is neither a legal holiday nor a day on which banking institutions are authorized or required by law or regulation to close in New York, New York and (ii) that is also a London Banking
Day (as defined below). 

 Except as described below for the first Interest Period, on each Interest Payment Date,
interest will be paid for the period commencing on and including the immediately preceding Interest Payment Date and ending on and including the day immediately preceding that Interest Payment Date. This period is referred to as an “Interest
Period.” The first Interest Period will commence on and include October 19, 2012 and end on and include January 18, 2013. Interest on this Security will be computed on the basis of a 360-day year of twelve 30-day months.

 The interest rate on this Security that will apply during the first eight Interest Periods (up to and including the Interest
Period ending October 18, 2014) will be equal to 2.25% per annum. For all Interest Periods commencing on or after October 19, 2014, the interest rate on this Security will be determined by the calculation agent for this Security (the
“Calculation Agent”) and will be equal to 3 month LIBOR on the Determination Date for such Interest Period plus 0.50%, subject to the Maximum Interest Rate. 
 The “Determination Date” for an Interest Period commencing on or after October 19, 2014 will be two London Banking Days prior to the first day of such Interest Period. A
“London Banking Day” is any day on which commercial banks and foreign exchange markets settle payments in London. 
 “3 month LIBOR” means, for any Determination Date, the arithmetic mean of the offered rates for deposits in U.S. dollars having a 3 month maturity, commencing on the second London
Banking Day immediately following that Determination Date that appear on the Designated LIBOR Page as of 11:00 a.m., London time, on that Determination Date, if at least two offered rates appear on the Designated LIBOR Page, provided that if
the Designated LIBOR Page by its terms provides only for a single rate, that single rate will be used. The “Designated LIBOR Page” means the display on Reuters, or any successor service, on page LIBOR01, or any other page as may
replace that page on that service, for the purpose of displaying the London Interbank rates for U.S. dollars. 
 If
(i) fewer than two offered rates appear or (ii) no rate appears and the Designated LIBOR Page by its terms provides only for a single rate, then the Calculation Agent will request the principal London offices of each of four major banks in
the London Interbank market, as selected by the Calculation Agent, to provide the Calculation Agent with its offered quotation for deposits in U.S. dollars for a 3 month period commencing on the second London Banking Day immediately following that
Determination Date to prime banks in the London Interbank market at approximately 11:00 a.m., London time, on that Determination Date and in a principal amount that is representative of a single transaction in U.S. dollars in that market at
that time. If at least two quotations are provided, 3 month LIBOR determined on that Determination Date will be the arithmetic mean of those quotations. 
 If fewer than two quotations are provided, 3 month LIBOR will be the arithmetic mean of the rates quoted at approximately 11:00 a.m. in New York, New York on that Determination Date by three major
banks in New York, New York selected by the Calculation Agent for loans in U.S. dollars to leading European banks, having a 3 month maturity and in a principal amount that is representative of a single transaction in U.S. dollars in that market at
that time. 

  
 2 

 If the banks so selected by the Calculation Agent are not quoting as set forth above, 3
month LIBOR on such Determination Date will be determined by the Calculation Agent in a commercially reasonable manner. 
 The
“Maximum Interest Rate” is 5.00% per annum. 
 The Calculation Agent shall, upon the request of a Holder
of this Security, provide the interest rate then in effect and, if determined, the interest rate that will become effective for the next Interest Period. All calculations of the Calculation Agent, in the absence of manifest error, shall be
conclusive for all purposes and binding on the Company and the Holder hereof. The Calculation Agent shall notify the Paying Agent of each determination of the interest applicable to this Security promptly after the determination is made. Wells Fargo
Securities, LLC will initially act as Calculation Agent. The Company may appoint a successor Calculation Agent with the written consent of the Trustee. 
 Any interest not punctually paid or duly provided for will forthwith cease to be payable to the Holder on such Regular Record Date and may either be paid to the Person in whose name this Security (or one
or more Predecessor Securities) is registered at the close of business on a Special Record Date for the payment of such Defaulted Interest to be fixed by the Trustee, notice whereof shall be given to Holders of Securities of this series not less
than 10 days prior to such Special Record Date, or be paid at any time in any other lawful manner not inconsistent with the requirements of any securities exchange on which the Securities of this series may be listed, and upon such notice as
may be required by such exchange, all as more fully provided in the Indenture. 
 Payment of interest on this Security will be
made in immediately available funds at the office or agency of the Company maintained for that purpose in the City of Minneapolis, Minnesota in such coin or currency of the United States of America as at the time of payment is legal tender for
payment of public and private debts; provided, however, that, at the option of the Company, payment of interest may be paid by check mailed to the Person entitled thereto at such Person’s last address as it appears in the Security Register or
by wire transfer to such account as may have been designated by such Person. Payment of principal of and interest on this Security at Maturity will be made against presentation of this Security at the office or agency of the Company maintained for
that purpose in the City of Minneapolis, Minnesota. Notwithstanding the foregoing, for so long as this Security is a Global Security registered in the name of the Depositary, payments of principal and interest on this Security will be made to the
Depositary by wire transfer of immediately available funds. 
 This Security is not subject to redemption at the option of the
Company or, except as set forth in the next sentence, repayment at the option of the Holder hereof prior to October 19, 2020. This Security may be subject to repayment if requested by the authorized representative of a beneficial owner of this
Security as described on the reverse hereof under “Repayment upon Exercise of Survivor’s Option.” This Security is not entitled to any sinking fund. 

 
  

  
 3 

 Reference is hereby made to the further provisions of this Security set forth on the reverse
hereof, which further provisions shall for all purposes have the same effect as if set forth at this place. 
 Unless the
certificate of authentication hereon has been executed by the Trustee referred to on the reverse hereof by manual signature or its duly authorized agent under the Indenture referred to on the reverse hereof by manual signature, this Security shall
not be entitled to any benefit under the Indenture or be valid or obligatory for any purpose. 
 [The remainder of this page
has been left intentionally blank] 

  
 4 

 IN WITNESS WHEREOF, the Company has caused this instrument to be duly executed under its
corporate seal. 
 DATED:              

 

			
	WELLS FARGO & COMPANY
		
	By:	 	  

		 	  

		 	Its:
                                         
                                         
     

 [SEAL] 
  

			
	     Attest:	 	  

		 	  

	         Its:	 	                             
                                         
             

 TRUSTEE’S CERTIFICATE OF 
 AUTHENTICATION 
 This is one of the Securities of the 

series designated therein described 
 in the
within-mentioned Indenture. 
  

			
	CITIBANK, N.A.,
	      as Trustee
		
	By:	 	  

		 	Authorized Signature
		
		 	OR
	
	WELLS FARGO BANK, N.A.,
	      as Authenticating Agent for the Trustee
		
	By:	 	  

		 	Authorized Signature

  
 5 

 [Reverse of Note] 
 WELLS FARGO & COMPANY 
 MEDIUM-TERM NOTE, SERIES K

 Due Nine Months or More From Date of Issue 
 Notes Linked to 3 Month LIBOR due October 19, 2020 
 This Security is
one of a duly authorized issue of securities of the Company (herein called the “Securities”), issued and to be issued in one or more series under an indenture dated as of July 21, 1999, as amended or supplemented from time to
time (herein called the “Indenture”), between the Company and Citibank, N.A., as Trustee (herein called the “Trustee,” which term includes any successor trustee under the Indenture), to which Indenture and all
indentures supplemental thereto reference is hereby made for a statement of the respective rights, limitations of rights, duties and immunities thereunder of the Company, the Trustee and the Holders of the Securities, and of the terms upon which the
Securities are, and are to be, authenticated and delivered. This Security is one of the series of the Securities designated as Medium-Term Notes, Series K, of the Company, which series is limited to an aggregate principal amount or face amount, as
applicable, of $25,000,000,000 or the equivalent thereof in one or more foreign or composite currencies. The amount payable on the Securities of this series may be determined by reference to the performance of one or more equity-, commodity- or
currency-based indices, exchange traded funds, securities, commodities, currencies, statistical measures of economic or financial performance, or a basket comprised of two or more of the foregoing, or any other market measure or may bear interest at
a fixed rate or a floating rate. The Securities of this series may mature at different times, be redeemable at different times or not at all, be repayable at the option of the Holder at different times or not at all and be denominated in different
currencies. 
 Article Sixteen of the Indenture shall not apply to this Security. 

The Securities are issuable only in registered form without coupons and will be either (a) book-entry securities represented by one
or more Global Securities recorded in the book-entry system maintained by the Depositary or (b) certificated securities issued to and registered in the names of, the beneficial owners or their nominees. 

The Company agrees, to the extent permitted by law, not to voluntarily claim the benefits of any laws concerning usurious rates of
interest against a Holder of this Security. 
 Modification and Waivers 

The Indenture permits, with certain exceptions as therein provided, the amendment thereof and the modification of the rights and
obligations of the Company and the rights of the Holders of the Securities of each series to be affected under the Indenture at any time by the Company and the Trustee with the consent of the Holders of a majority in principal amount of the
Securities at the time Outstanding of all series to be affected, acting together as a class. The Indenture also contains 

  
 6 

 
provisions permitting the Holders of a majority in principal amount of the Securities of all series at the time Outstanding affected by certain provisions of the Indenture, acting together as a
class, on behalf of the Holders of all Securities of such series, to waive compliance by the Company with those provisions of the Indenture. Certain past defaults under the Indenture and their consequences may be waived under the Indenture by the
Holders of a majority in principal amount of the Securities of each series at the time Outstanding, on behalf of the Holders of all Securities of such series. Any such consent or waiver by the Holder of this Security shall be conclusive and binding
upon such Holder and upon all future Holders of this Security and of any Security issued upon the registration of transfer hereof or in exchange herefor or in lieu hereof, whether or not notation of such consent or waiver is made upon this Security.

 Defeasance 
 Section 403 and Article Fifteen of the Indenture and the provisions of clause (ii) of Section 401(1)(B) of the Indenture, relating to defeasance at any time of (a) the entire
indebtedness on this Security and (b) certain restrictive covenants and certain Events of Default, upon compliance by the Company with certain conditions set forth therein, shall not apply to this Security. The remaining provisions of
Section 401 of the Indenture shall apply to this Security. 
 Authorized Denominations 

This Security is issuable only in registered form without coupons in denominations of $1,000 or any amount in excess thereof which is an
integral multiple of $1,000. 
 Repayment upon Exercise of Survivor’s Option 

The Company has agreed to repay beneficial ownership interests in this Security, if requested by the authorized representative of the
beneficial owner of such beneficial ownership interest following the death of the beneficial owner, so long as the beneficial ownership interest in this Security was acquired by the beneficial owner at least six months prior to the request (the
“Survivor’s Option”). 
 Upon the valid exercise of the Survivor’s Option and the proper tender of a
beneficial ownership interest in this Security for repayment, the Company will repay such beneficial ownership interest in this Security, in whole or in part, at a price equal to 100% of the principal amount of the deceased beneficial owner’s
beneficial interest in this Security, plus any accrued and unpaid interest to the date of repayment. 
 To be valid, the
Survivor’s Option must be exercised by or on behalf of the Person who has authority to act on behalf of a deceased beneficial owner of this Security under the laws of the applicable jurisdiction (including, without limitation, the personal
representative of or the executor of the estate of the deceased beneficial owner or the surviving joint owner with the deceased beneficial owner). 
 A beneficial owner of this Security is a Person who has the right, immediately prior to such Person’s death, to receive the proceeds from the disposition of such beneficial owner’s interest in
this Security, as well as the right to receive the principal amount of the deceased beneficial owner’s interest in this Security plus any accrued and unpaid interest thereon. 

  
 7 

 The death of a Person holding a beneficial ownership interest in this Security as a joint
tenant or tenant by the entirety with another Person, or as a tenant in common with the deceased holder’s spouse, will be deemed the death of a beneficial owner of that beneficial ownership interest in this Security, and the entire principal
amount of the deceased beneficial owner’s interest in this Security held in this manner will be subject to repayment by the Company upon exercise of the Survivor’s Option. However, the death of a Person holding a beneficial ownership
interest in this Security as tenant in common with a Person other than such deceased holder’s spouse will be deemed the death of a beneficial owner only with respect to such deceased Person’s interest in this Security, and only the
deceased beneficial owner’s percentage interest in that beneficial ownership interest in the principal amount of this Security will be subject to repayment. 
 The death of a Person who, during his or her lifetime, was entitled to substantially all of the beneficial ownership interests in this Security will be deemed the death of the beneficial owner of this
Security for purposes of the Survivor’s Option, regardless of whether that beneficial owner was the registered holder of this Security, if the beneficial ownership interest can be established to the satisfaction of the Paying Agent. A
beneficial ownership interest will be deemed to exist in typical cases of nominee ownership, ownership under the Uniform Transfers to Minors Act or Uniform Gifts to Minors Act, community property, or other joint ownership arrangements between a
husband and wife. In addition, the beneficial ownership interest in this Security will be deemed to exist in custodial and trust arrangements where one Person has all of the beneficial ownership interest in this Security during his or her lifetime.
In the case of a joint trust, the joint tenant rules above will apply to the respective beneficial ownership interests. 
 The
Company has the discretionary right to limit the aggregate principal amount of this Security as to which exercises of the Survivor’s Option will be accepted by the Company from the authorized representative for any individual deceased
beneficial owner of this Security in any calendar year to $250,000. In addition, the Company will not permit the exercise of the Survivor’s Option for any portion of this Security with a principal amount of less than $1,000, and the Company
will not permit the exercise of the Survivor’s Option if such exercise will result in this Security having a principal amount that is not an integral multiple of $1,000. 
 An otherwise valid election to exercise the Survivor’s Option may not be withdrawn. An election to exercise the Survivor’s Option will be accepted in the order that it was received by the Paying
Agent, except for any beneficial ownership interest in this Security the acceptance of which would contravene the limitation described above. Beneficial ownership interests in this Security accepted for repayment through the exercise of the
Survivor’s Option normally will be repaid on the first Interest Payment Date that occurs 20 or more calendar days after the date of the acceptance. Each tendered beneficial ownership interest in this Security that is not accepted in a calendar
year due to the application of the limitation described in the preceding paragraph will be deemed to be tendered in the following calendar year in the order in which all such beneficial interests were originally tendered. If a beneficial ownership
interest in this Security tendered through a valid exercise of the Survivor’s Option is not accepted, the Paying Agent will deliver a notice by first-class mail to the registered holder, at that registered holder’s last known address as
indicated in the Security Register, that states the reason that the beneficial ownership interest in this Security has not been accepted for repayment. 

  
 8 

 Since this Security is a Global Security, DTC, as depository, or its nominee will be treated
as the holder of this Security and will be the only entity that can exercise the Survivor’s Option. To obtain repayment of this Security pursuant to exercise of the Survivor’s Option, the deceased beneficial owner’s authorized
representative must provide the following items to the broker or other entity through which the beneficial interest in this Security is held by the deceased beneficial owner: 

 

	 	•	 	 appropriate evidence satisfactory to the Paying Agent that: 

 

	 	(a)	the deceased was a beneficial owner of this Security at the time of death and his or her interest in this Security was acquired by the deceased beneficial owner at
least six months prior to the request for repayment, 

  

	 	(b)	the death of the beneficial owner has occurred and the date of death, and 

  

	 	(c)	the representative has authority to act on behalf of the deceased beneficial owner; 

 

	 	•	 	 if the beneficial interest in this Security is held by a nominee or trustee of, or custodian for, or other Person in a similar capacity to, the
deceased beneficial owner, a certificate satisfactory to the Paying Agent from the nominee, trustee, custodian or similar Person attesting to the deceased’s beneficial ownership in this Security; 

 

	 	•	 	 a written request for repayment signed by the authorized representative of the deceased beneficial owner with the signature guaranteed by a member firm
of a registered national securities exchange or of the Financial Industry Regulatory Authority, Inc. or a commercial bank or trust company having an office or correspondent in the United States; 

 

	 	•	 	 if applicable, a properly executed assignment or endorsement; 

 

	 	•	 	 tax waivers and any other instruments or documents that the Paying Agent reasonably requires in order to establish the validity of the beneficial
ownership in this Security and the claimant’s entitlement to payment; and 

  

	 	•	 	 any additional information the Paying Agent requires to evidence satisfaction of any conditions to the exercise of the Survivor’s Option or to
document beneficial ownership or authority to make the election and to cause the repayment of this Security. 

 In turn, the
broker or other entity will deliver each of these items to the Paying Agent and will certify to the Paying Agent that the broker or other entity represents the deceased beneficial owner. 

The Company retains the right to limit the aggregate principal amount of this Security as to which exercises of the Survivor’s
Option will be accepted by the Company from the authorized representative for any individual deceased beneficial owner in this Security in any calendar year as described above. All other questions regarding the eligibility or validity of any
exercise of the Survivor’s Option will be determined by the Paying Agent, in its sole discretion, which determination will be final and binding on all parties. 

  
 9 

 The broker or other entity will be responsible for disbursing payments received from the
Paying Agent to the authorized representative. Forms for the exercise of the Survivor’s Option may be obtained from the Paying Agent. 

Registration of Transfer 
 Upon due presentment for registration of transfer of this Security at the office or agency of the Company in the City of Minneapolis, Minnesota, a new Security or Securities of this series, with the same
terms as this Security, in authorized denominations for an equal aggregate principal amount will be issued to the transferee in exchange herefor, as provided in the Indenture and subject to the limitations provided therein and to the limitations
described below, without charge except for any tax or other governmental charge imposed in connection therewith. 
 This
Security is exchangeable for definitive Securities in registered form only if (x) the Depositary notifies the Company that it is unwilling or unable to continue as Depositary for this Security or if at any time the Depositary ceases to be a
clearing agency registered under the Securities Exchange Act of 1934, as amended, and a successor depositary is not appointed within 90 days after the Company receives such notice or becomes aware of such ineligibility, (y) the Company in
its sole discretion determines that this Security shall be exchangeable for definitive Securities in registered form and notifies the Trustee thereof or (z) an Event of Default with respect to the Securities represented hereby has occurred and
is continuing. If this Security is exchangeable pursuant to the preceding sentence, it shall be exchangeable for definitive Securities in registered form, bearing interest at the same rate, having the same date of issuance, Stated Maturity Date and
other terms and of authorized denominations aggregating a like amount. 
 This Security may not be transferred except as a whole
by the Depositary to a nominee of the Depositary or by a nominee of the Depositary to the Depositary or another nominee of the Depositary or by the Depositary or any such nominee to a successor of the Depositary or a nominee of such successor.
Except as provided above, owners of beneficial interests in this Global Security will not be entitled to receive physical delivery of Securities in definitive form and will not be considered the Holders hereof for any purpose under the Indenture.

 Prior to due presentment of this Security for registration of transfer, the Company, the Trustee and any agent of the Company
or the Trustee may treat the Person in whose name this Security is registered as the owner hereof for all purposes, whether or not this Security be overdue, and neither the Company, the Trustee nor any such agent shall be affected by notice to the
contrary. 
 Obligation of the Company Absolute 
 No reference herein to the Indenture and no provision of this Security or the Indenture shall alter or impair the obligation of the Company, which is absolute and unconditional, to pay the principal of
and interest on this Security at the times, place and rate, and in the coin or currency, herein prescribed, except as otherwise provided in this Security. 

  
 10 

 No Personal Recourse 
 No recourse shall be had for the payment of the principal of or the interest on this Security, or for any claim based hereon, or otherwise in respect hereof, or based on or in respect of the Indenture or
any indenture supplemental thereto, against any incorporator, stockholder, officer or director, as such, past, present or future, of the Company or any successor corporation, whether by virtue of any constitution, statute or rule of law, or by the
enforcement of any assessment or penalty or otherwise, all such liability being, by the acceptance hereof and as part of the consideration for the issuance hereof, expressly waived and released. 

Defined Terms 

All terms used in this Security which are defined in the Indenture shall have the meanings assigned to them in the Indenture unless
otherwise defined in this Security. 
 Governing Law 
 This Security shall be governed by and construed in accordance with the law of the State of New York, without regard to principles of conflicts of laws. 

  
 11 

 ABBREVIATIONS 

The following abbreviations, when used in the inscription on the face of this instrument, shall be construed as though they were written
out in full according to applicable laws or regulations: 
  

					
	TEN COM	  	—	  	as tenants in common
			
	TEN ENT	  	—	  	as tenants by the entireties
			
	JT TEN	  	—	  	 as joint tenants with right
 of
survivorship and not
 as tenants in common

  

							
	UNIF GIFT MIN ACT —	  	  
	  	Custodian	  	  

		  	(Cust)	  		  	(Minor)

  

					
	Under Uniform Gifts to Minors Act	 		  	
			
	  
	 		  	
	(State)	 		  	

 Additional abbreviations may also be used though not in the above list. 

FOR VALUE RECEIVED, the undersigned hereby sell(s) and transfer(s) unto 
 Please Insert Social Security or 
 Other Identifying Number of Assignee 

 

					
	  
	 		  	

  
   

 
  

 
  

 
 (PLEASE
PRINT OR TYPE NAME AND ADDRESS INCLUDING POSTAL ZIP CODE OF ASSIGNEE)

  
 12 

 the within Security of WELLS FARGO & COMPANY and does hereby irrevocably constitute and appoint
            attorney to transfer the said Security on the books of the Company, with full power of substitution in the premises. 
 Dated:              
  

	
	  

	
	  

 NOTICE: The signature to this assignment must correspond with the name as written upon the face of the within
instrument in every particular, without alteration or enlargement or any change whatever. 

  
 13Executive Employment Transition Agreement

 Exhibit 10.1 
 EXECUTIVE EMPLOYMENT TRANSITION AGREEMENT 
 THIS EXECUTIVE EMPLOYMENT
TRANSITION AGREEMENT, dated effective as of October 19, 2012 (the “Effective Date”), is made by and between NetScout Systems, Inc. (the “Company”), and David P. Sommers (the “Executive”)
residing at [address]. 
 WHEREAS, the Company desires to continue to retain Executive as an employee to
provide personal services to the Company, and wishes to provide Executive with certain compensation and benefits in return for his services; 
 WHEREAS, Executive desires to continue to be employed by the Company and provide such services to the Company as an employee in return for certain compensation and
benefits; 
 WHEREAS, Executive is currently party to that certain existing Amended and
Restated Severance Agreement for Executive Officers, dated as of May 28, 2012, by and between the Company and Executive (the “Amended Severance Agreement”), and the Company and Executive agree that this Agreement shall
supersede the Amended Severance Agreement in its entirety; and 
 NOW,
THEREFORE, in consideration of the mutual promises and covenants contained herein, it is hereby agreed by and between the parties hereto as follows: 

1. Defined Terms. The definitions of capitalized terms used in this Agreement are provided in Section 21. 

2. Term of Agreement. The term of this Agreement shall commence on the Effective Date and shall continue in effect through
March 31, 2015 (the “Term”). 
 3. Position. From the Effective Date through March 31, 2013
(the “2013 Fiscal Year”), Executive shall be employed full-time as the Executive Vice Chairman of the Company, subject to the terms and conditions set forth in this Agreement. From April 1, 2013 through March 31, 2014 (the
“2014 Fiscal Year”) and from April 1, 2014 through March 31, 2015 (the “2015 Fiscal Year”), Executive shall be employed part-time as the Advisor to the Chief Executive Officer of the Company, subject to
the terms and conditions set forth in this Agreement. Following the Effective Date, Executive will no longer be an “officer” of the Company (as defined in Section 16 of the Securities Exchange Act of 1934, as amended). 

4. Duties. Executive will report to the Chief Executive Officer of the Company, performing such duties as are normally associated
with his then current position and such duties as are assigned to him from time to time, subject to the oversight and direction of the Chief Executive Officer. Except as permitted by Section 9 herein, Executive shall devote his full business
time, energy, and skill to the affairs of the Company and shall devote such hours as necessary to perform his duties to the Company. 
 5. Policies and Practices. The employment relationship between the parties shall be governed by this Agreement and by the policies and practices established by the Company. In the event that
the terms of this Agreement differ from or are in conflict with the Company’s policies or practices, this Agreement shall control. 

 6. Location and Travel. Unless the parties otherwise agree in writing, at all times
during the Term, Executive’s principal place of business shall be at the Company’s corporate headquarters (or such other future Company location), provided, however, that the Company may from time to time require Executive to travel
temporarily to other locations (domestic and international) in connection with the Company’s business. 
 7.
Compensation and Benefits. 
 a. Base Salary. During his employment with the Company, Executive shall receive an
annualized base salary of: (i) $265,000 for services performed in the 2013 Fiscal Year; (ii) $132,500 for services performed in the 2014 Fiscal Year; and (iii) $132,500 for services performed in the 2015 Fiscal Year; payable subject
to applicable payroll deductions and withholdings in accordance with the Company’s standard payroll practices (“Base Salary”). 
 b. 2013 Fiscal Year Bonus. For the 2013 Fiscal Year, Executive will be eligible to earn a performance bonus of up to $230,000 (the “2013 Fiscal Year Bonus”). The 2013 Fiscal Year
Bonus will be based upon the Board’s assessment of the Company’s and the Company’s senior management’s attainment of targeted goals during the 2013 Fiscal Year as set by the Board in its sole discretion. The 2013 Fiscal Year
Bonus, if any, will be subject to applicable payroll deductions and withholdings. Following the close of the 2013 Fiscal Year, the Board will determine whether Executive has earned the 2013 Fiscal Year Bonus, and the amount of any 2013 Fiscal Year
Bonus, based on the set criteria. No amount of the 2013 Fiscal Year Bonus is guaranteed, and Executive must be an employee in good standing on the 2013 Fiscal Year Bonus payment date to be eligible to receive a 2013 Fiscal Year Bonus. No partial or
prorated bonuses will be provided unless and until so determined by the Board. The 2013 Fiscal Year Bonus, if earned, will be paid in accordance with the Company’s usual bonus payment practices, but no later than March 15, 2014.
Executive’s eligibility for a 2013 Fiscal Year Bonus is subject to change in the discretion of the Board (or any authorized committee thereof). Executive shall not be entitled to receive any bonus with respect to periods after the 2013 Fiscal
Year. 
 c. Equity. During his employment with the Company, all stock options, restricted stock units and other equity
incentives granted or issued to Executive by the Company under the Company’s 2007 Equity Incentive Plan (or any successor or other equity compensation plan of the Company) (the “Plan”) shall continue to vest under the terms of
Executive’s stock option agreement, restricted stock unit agreement, grant notice, the Plan, and the Plan documents. Executive will not be eligible to receive any additional grants of the Company’s restricted stock units, unless otherwise
authorized by the Company in its sole discretion. 
 d. Benefits. During his employment with the Company, Executive
shall, in accordance with Company policy and the terms of the applicable Company benefit plan documents, continue to be eligible to participate in any benefit plan or arrangement, including health, life and disability insurance, retirement plans and
the like, that may be in effect from time to time and made available to the Company’s senior management. All matters of eligibility for coverage or benefits under any benefit plan shall be determined in accordance with the provisions of such
plan. The Company reserves the right to change, alter, or terminate any benefit plan in its sole discretion. Notwithstanding the foregoing, in the event that the terms of this Agreement differ from or are in conflict with the Company’s general
employment policies or practices, this Agreement shall control. 

  
 - 2-

 8. Confidential Information Obligations. As a condition of employment, Executive
agrees to continue to abide by his Non-Competition, Non-Solicitation, and Confidentiality Agreement (“Confidentiality Agreement”), which may be amended by the parties from time to time without regard to this Agreement. The
Confidentiality Agreement contains provisions that are intended by the parties to survive and do survive termination of this Agreement. 
 9. Outside Activities During Employment. 
 a. No Adverse Interests.
Executive agrees not to acquire, assume or participate in, directly or indirectly, any position, investment or interest known by him to be adverse or antagonistic to the Company, its business or prospects, financial or otherwise during his
employment without the written consent of the Board. Except with the prior written consent of the Board, Executive will not during his employment undertake or engage in any other employment, occupation or business enterprise; provided that,
Executive may engage in civic and not-for-profit activities so long as such activities do not create a conflict with his employment hereunder or materially interfere with the performance of his duties. 

b. Noncompetition. Other than as permitted by Section 9(a) herein, during his employment, except on behalf of the Company,
Executive will not directly or indirectly, whether as an officer, director, stockholder, partner, proprietor, associate, representative, consultant, or in any capacity whatsoever engage in, become financially interested in, participate in, be
employed by or have any business connection with any other person, corporation, firm, partnership or other entity whatsoever which competes with the Company, anywhere throughout the world, in any line of business engaged in (or planned to be engaged
in) by the Company other than de minimis stock holdings in public companies; provided, however, that anything above to the contrary notwithstanding, he may own, as a passive investor, securities of any competitor corporation, so long as his
direct holdings in any one such corporation shall not in the aggregate constitute more than one percent (1%) of the voting stock of such corporation, and provided that Executive promptly discloses to the Board any such participation,
other than such de minimis stock holdings. 
 10. Termination of Employment. The parties acknowledge that
Executive’s employment relationship with the Company is at-will. Either Executive or the Company may terminate the employment relationship at any time, with or without Cause. The provisions in this Section govern the amount of compensation, if
any, to be provided to Executive upon termination of employment and do not alter this at-will status. 
 a. Termination by
the Company For Cause. 
 i. Notwithstanding any other provision of this Agreement, Executive’s employment under this
Agreement may be terminated by the Company for Cause (as defined below) by delivery of written notice to Executive. Any notice of termination shall effect termination as of the date of the notice, or as of such other date as specified in the notice.

 ii. If, during the Term, Executive’s employment is terminated by the Company for Cause, the Company shall pay Executive
any accrued and unpaid Base Salary owed to Executive, expense reimbursement amounts owed to Executive, and accrued and unused vacation benefits earned through the date of termination at the rate in effect at the time of termination, less standard
deductions and withholdings, on the next regularly scheduled Company payroll date following the date of termination, or earlier if required by applicable law. The Company shall thereafter have no further obligations to Executive under this
Agreement, except as otherwise provided by law. 

  
 - 3-

 b. Resignation by Executive without Good Reason. 

i. Notwithstanding any other provision of this Agreement, Executive’s employment under this Agreement may be terminated by
Executive without Good Reason (as defined below) by delivery of written notice to the Company. Any notice of resignation shall effect termination thirty (30) days after Executive gives written notice to the Company of Executive’s
resignation; provided that the Company may set a termination date at any time between the date of notice and the effective date of resignation, in which case Executive’s resignation shall be effective as of such other date. For avoidance
of doubt, in the event that the Company shortens the time period between the date Executive gives written notice of his resignation and the effective date of his resignation, this shall not be construed as a termination by the Company without Cause.

 ii. If, during the Term, Executive resigns his employment hereunder without Good Reason, the Company shall pay Executive any
accrued and unpaid Base Salary owed to Executive, expense reimbursement amounts owed to Executive, and accrued and unused vacation benefits earned through the date of termination at the rate in effect at the time of termination, less standard
deductions and withholdings, on the next regularly scheduled Company payroll date following the date of termination, or earlier if required by applicable law. The Company shall thereafter have no further obligations to Executive under this
Agreement, except as otherwise provided by law. 
 c. Termination by the Company without Cause or Resignation for Good
Reason. 
 i. Notwithstanding any other provision of this Agreement, Executive’s employment under this Agreement may
be terminated without Cause at any time and for any reason, or for no reason or by Executive with Good Reason by delivery of written notice to the other party. Termination by the Company shall be effective on the date Executive is so informed, or as
otherwise specified by the Company. Resignation by Executive shall be effective as provided in the definition of “Good Reason” in Section 21 below. 
 ii. If the Company terminates Executive’s employment without Cause, or if Executive resigns for Good Reason, the Company shall pay Executive any accrued and unpaid Base Salary owed to Executive,
expense reimbursement amounts owed to Executive and accrued and unused vacation benefits earned through the date of termination at the rate in effect at the time of termination, less standard deductions and withholdings, on the next regularly
scheduled Company payroll date following the date of termination, or earlier if required by applicable law. 
 iii. In
addition, subject to Executive furnishing to the Company an executed waiver and general release of any and all known and unknown claims, and other provisions and covenants, in the form acceptable to the Company (the “Release”)
within the time period specified in the Release, but no later than 60 days following Executive’s “separation from service” (as defined under Treasury Regulation Section 1.409A-1(h) and without regard to any alternate definition
thereunder) (a “Separation from Service”), and allowing the Release to become effective in accordance with its terms, then Executive shall be entitled to the following benefits: (A) continuation of Executive’s Base Salary
(at the annual base salary rates described in Section 7(a) and subject to standard payroll deductions and withholdings) until the end of the Term; provided, however, that any payments otherwise scheduled to be made prior to the effective
date of the Release (namely, the date it can no longer be revoked) shall accrue and be paid in the first payroll date that follows such effective date with subsequent payments occurring on each subsequent Company payroll date; (B) an amount
equal to: (i) the full 2013 Fiscal Year Bonus, 

  
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payable as a lump sum payment on the Release effective date (namely, the date it can no longer be revoked), if Executive is terminated prior to the Board’s Compensation Committee’s (the
“Compensation Committee”) determination of bonus amounts for the 2013 Fiscal Year; or (ii) the amount of the 2013 Fiscal Year Bonus owed to Executive as determined by the Compensation Committee, payable as a lump sum payment on
the Release effective date (namely, the date it can no longer be revoked), if Executive is terminated after the Compensation Committee’s determination of bonus amounts for the 2013 Fiscal Year, but prior to the Company’s payment of such
bonuses; (C) all stock options, restricted stock units and other equity incentives granted or issued by the Company prior to Executive’s termination under the Company’s 2007 Equity Incentive Plan (or any successor or other equity
compensation plan of the Company) that would have become vested (and, if applicable exercisable) in the period between Executive’s termination and the end of the Term shall immediately and without further action become vested (and, if
applicable, exercisable), effective upon the Release effective date (namely, the date it can no longer be revoked); and (D) if Executive timely elects continued coverage under COBRA for himself and his covered dependents under the
Company’s group health plans following such termination, then the Company shall pay the COBRA premiums necessary to continue Executive’s and his covered dependents’ health insurance coverage in effect for himself on the termination
date until the earliest of (i) the end of the Term; or (ii) the date when Executive becomes eligible for substantially equivalent health insurance coverage in connection with new employment or self-employment (such period from the
termination date through the earlier of (i)-(ii), the “COBRA Payment Period”). Notwithstanding the foregoing, if Executive ceases to be eligible for COBRA continuation coverage or if at any time the Company determines that its
payment of COBRA premiums on Executive’s behalf would result in a violation of applicable law (including, without limitation, Section 2716 of the Public Health Service Act), then in lieu of paying COBRA premiums pursuant to this
Section 10(c)(iii), the Company shall pay Executive on the last day of each remaining month of the COBRA Payment Period, a fully taxable cash payment equal to the COBRA premium for such month (or if Executive is no longer eligible for COBRA
continuation coverage, an amount equal to the COBRA premium for the last month that Executive was eligible for COBRA), subject to applicable tax withholding (such amount, the “Special Severance Payment”), such Special Severance
Payment to be made without regard to Executive’s payment of COBRA premiums and without regard to the expiration of the COBRA period prior to the end of the COBRA Payment Period. Nothing in this Agreement shall deprive Executive of his rights
under COBRA or ERISA for benefits under plans and policies arising under his employment by the Company. 
 iv. Notwithstanding
anything to the contrary in this Agreement, if any severance pay or benefits are deferred compensation under Section 409A of the Internal Revenue Code of 1986, as amended (the “Code”), and the regulations and other guidance
issued thereunder and any state law of similar effect (collectively, “Section 409A”), and the period during which Executive may sign the Release begins in one calendar year and ends in another, then the severance pay or benefit
shall not be paid or the first payment shall not occur until the later calendar year. 
 d. Termination for Death or
Disability. 
 i. Executive’s employment with the Company shall automatically terminate effective upon the date of
Executive’s death or Disability (as defined below). 
 ii. If, during the Term, Executive’s employment shall be
terminated by death or Disability, the Company shall pay to Executive, his estate, or his heirs, as applicable, any accrued and unpaid Base Salary owed to Executive, expense reimbursement amounts owed to Executive, accrued

  
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and unused vacation benefits earned through the date of termination at the rate in effect at the time of termination, less standard deductions and withholdings, on the next regularly scheduled
Company payroll date following the date of termination, or earlier if required by applicable law. The Company shall thereafter have no further obligations to Executive under this Agreement, except as otherwise provided by law. 

e. Expiration of the Term. Upon the expiration of the Term, the Company shall pay Executive any accrued and unpaid Base Salary
owed to Executive, expense reimbursement amounts owed to Executive, and accrued and unused vacation benefits earned through the last day of the Term at the rate in effect at the time of the expiration of the Term, less standard deductions and
withholdings, on the next regularly scheduled Company payroll date following the expiration of the Term, or earlier if required by applicable law. The Company shall thereafter have no further obligations to Executive under this Agreement, except as
otherwise provided by law. 
 11. Assignment. This Agreement and the rights and obligations of the parties hereto shall
bind and inure to the benefit of any successor of the Company by Change in Control, reorganization, merger or consolidation and any assignee of all or substantially all of its business and properties. Transfer of Executive’s employment from the
Company to any successor of the Company by Change in Control shall not be deemed a termination of employment for purposes of Section 10 of this Agreement. Neither this Agreement nor any rights or benefits hereunder may be assigned by Executive,
except that, upon Executive’s death, Executive’s earned and unpaid economic benefits will be paid to Executive’s heirs or beneficiaries. 
 12. Notices. For the purpose of this Agreement, notices and all other communications provided for in this Agreement shall be in writing and shall be deemed to have been duly given when delivered or
mailed by United States registered or certified mail, return receipt requested, postage prepaid, addressed to the last known residence address of Executive or in the case of the Company, to its principal office to the attention of the Chief
Executive Officer of the Company, or to such other address as either party may have furnished to the other in writing in accordance herewith, except that notice of change of address shall be effective only upon receipt. 

13. Governing Law. The validity, interpretation, construction and performance of this Agreement shall be governed by the laws of
the Commonwealth of Massachusetts, without regard to its conflict of laws provisions. 
 14. Arbitration. The parties
recognize that litigation in federal or state courts or before federal or state administrative agencies of disputes arising out of Executive’s employment with the Company or out of this Agreement, or Executive’s termination of employment
or termination of this Agreement, may not be in the best interests of either Executive or the Company, and may result in unnecessary costs, delays, complexities, and uncertainty. The parties agree that any dispute between the parties arising out of
or relating to the negotiation, execution, performance or termination of this Agreement or Executive’s employment, including, but not limited to, any claim arising out of this Agreement, claims under Title VII of the Civil Rights Act of 1964,
as amended, the Civil Rights Act of 1991, the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act of 1990, Section 1981 of the Civil Rights Act of 1966, as amended, the Family Medical Leave Act, the Employee
Retirement Income Security Act, and any similar federal, state or local law, statute, regulation, or any common law doctrine, whether that dispute arises during or after employment, shall be settled by binding

  
 - 6-

 
arbitration in accordance with the Employment Arbitration Rules & Procedures of JAMS (“JAMS”); provided however, that this dispute resolution provision shall not
apply to any separate agreements between the parties that do not themselves specify arbitration as an exclusive remedy. The location for the arbitration shall be the Boston, Massachusetts metropolitan area. Any award made by such panel shall be
final, binding and conclusive on the parties for all purposes, and judgment upon the award rendered by the arbitrators may be entered in any court having jurisdiction thereof. The Company shall pay all JAMS fees in excess of the amount of filing and
other court-related fees Executive would have been required to pay if the claims were asserted in a court of law. The parties acknowledge and agree that their obligations to arbitrate under this Section survive the termination of this Agreement and
continue after the termination of the employment relationship between Executive and the Company. The parties each further agree that the arbitration provisions of this Agreement shall provide each party with its exclusive remedy, and each party
expressly waives any right it might have to seek redress in any other forum, except as otherwise expressly provided in this Agreement. By electing arbitration as the means for final settlement of all claims, the parties hereby waive their
respective rights to, and agree not to, sue each other in any action in a federal, state or local court with respect to such claims, but may seek to enforce in court an arbitration award rendered pursuant to this Agreement. The parties specifically
agree to waive their respective rights to a trial by jury, and further agree that no demand, request or motion will be made for trial by jury. Nothing in this Agreement shall prevent either Executive or the Company from obtaining injunctive
relief in court to prevent irreparable harm pending the conclusion of any such arbitration. 
 15. Application of
Section 409A. Notwithstanding anything to the contrary set forth herein, any payments and benefits provided under this Agreement (the “Benefits”) that constitute “deferred compensation” within the meaning of
Section 409A shall not commence in connection with Executive’s termination of employment unless and until Executive has also incurred a Separation from Service, unless the Company reasonably determines that such amounts may be provided to
Executive without causing Executive to incur the additional 20% tax under Section 409A. It is intended that each installment of the Benefits payments provided for in this Agreement is a separate and distinct “payment” for purposes of
Treasury Regulation Section 1.409A-2(b)(2)(i). For the avoidance of doubt, it is intended that payments of the Benefits set forth in this Agreement satisfy, to the greatest extent possible, the exemptions from the application of
Section 409A provided under Treasury Regulation Sections 1.409A-1(b)(4), 1.409A-1(b)(5), and 1.409A-1(b)(9). However, if the Company (or, if applicable, the successor entity thereto) determines that the Benefits constitute “deferred
compensation” under Section 409A and Executive is, on the termination of service, a “specified employee” of the Company or any successor entity thereto, as such term is defined in Section 409A(a)(2)(B)(i) of the Code, then,
solely to the extent necessary to avoid the incurrence of the adverse personal tax consequences under Section 409A, the timing of the Benefits payments shall be delayed until the earlier to occur of: (i) the date that is six months and one
day after Executive’s Separation from Service, or (ii) the date of Executive’s death (such applicable date, the “Specified Employee Initial Payment Date”). On the Specified Employee Initial Payment Date, the Company
(or the successor entity thereto, as applicable) shall (A) pay to Executive a lump sum amount equal to the sum of the Benefits payments that Executive would otherwise have received through the Specified Employee Initial Payment Date if the
commencement of the payment of the Benefits had not been so delayed pursuant to this Section and (B) commence paying the balance of the Benefits in accordance with the applicable payment schedules set forth in this Agreement. While it is
intended that all payments and benefits provided under this Agreement or otherwise to Executive will be exempt from or comply with Section 409A, the Company makes no representation or covenant to ensure that any such payments or benefits are
exempt from or compliant with Section 409A. The Company will have no 

  
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liability to Executive or any other party if a payment or benefit under this Agreement is challenged by any taxing authority or is ultimately determined not to be exempt or compliant. Executive
further understands and agrees that Executive will be entirely responsible for any and all taxes on any payments and benefits provided to Executive as a result of this Agreement. 

16. Application of Section 280G. If any Benefits payments provided for in this Agreement or any other agreement would
(i) constitute a “parachute payment” within the meaning of Section 280G of the Code, and (ii) but for this sentence, be subject to the excise tax imposed by Section 4999 of the Code (the “Excise Tax”),
then such Benefits payments shall be adjusted so that it would equal to the Reduced Amount. The “Reduced Amount” shall be either (x) the largest portion of the Benefits payments that would result in no portion of the Benefits payments
being subject to the Excise Tax or (y) the total Benefits payments, whichever amount of (x) or (y), after taking into account all applicable federal, state and local employment taxes, income taxes, and the Excise Tax (all computed at the
highest applicable marginal rate), results in receipt by Executive, on an after-tax basis, of the greater amount of the Benefits payments notwithstanding that all or some portion of the Benefits payments may be subject to the Excise Tax. If a
reduction in payments or benefits constituting “parachute payments” is necessary so that the Benefits payments equals the Reduced Amount, reduction shall occur in the following order: (a) reduction of cash payments;
(b) cancellation of accelerated vesting of equity awards other than stock options; (c) cancellation of accelerated vesting of stock options; and (d) reduction of employee benefits. Within any such category of payments and benefits
(that is, (a), (b), (c) or (d)), a reduction will occur first with respect to amounts that are not “deferred compensation” within the meaning of Section 409A and then with respect to amounts that are. In the event that
acceleration of vesting of stock options, restricted stock units or other equity incentive awards compensation (each an “Equity Award”) is to be reduced, such acceleration of vesting shall be cancelled, subject to the immediately
preceding sentence, in the reverse order of the date of grant of Executive’s Equity Awards (i.e., earliest granted Equity Award cancelled last). 
 17. Non-Payment and Clawback. In the event that at any point during Executive’s employment or after Executive’s employment has terminated, the Company reasonably determines upon the
completion of an investigation that results in specific evidence of the occurrence of any such action (which evidence shall be disclosed to Executive upon request to the extent the Company is legally permitted to disclose such evidence) that
Executive: (a) committed a fraudulent, dishonest or criminal act while employed with the Company which resulted in, or is reasonably likely to result in, harm to the Company; or (b) materially breached or continues to materially breach any
of Executive’s obligations under any written agreements executed between the Company and Executive (provided that with respect to this clause (b), the Company has provided Executive at least fifteen (15) days prior notice of its intent to
cease payment and/or seek repayment of prior payments pursuant to this Section 17 and such breach, if capable of remedy or cure, has not been remedied or cured by Executive within such fifteen (15) day period), then (and in addition to any
other legal remedies available) the Company shall be entitled to cease making any remaining payments otherwise due under this Agreement and Executive shall, within fifteen (15) days of receiving notice from the Company, repay the Company all
amounts previously received under this Agreement (including the value of any options, restricted stock units or other equity incentives accelerated under this Agreement as of the time that the acceleration of vesting occurred). 

18. Integration. This Agreement, including the Confidentiality Agreement, contains the complete, final and exclusive agreement of
the parties relating to the terms and conditions of Executive’s employment and the termination of Executive’s employment, and supersedes and is in lieu of all prior and 

  
 - 8-

 
contemporaneous oral and written employment agreements or arrangements between the parties, including but not limited to the Amended Severance Agreement; provided that nothing herein shall
supersede or replace the acceleration of vesting provided by the Company’s 1999 Stock Option and Incentive Plan. 
 19.
Survivorship. Except as otherwise set forth in this Agreement, the respective rights and obligations of the parties, including but not limited to the Company’s obligations under Section 10(c), shall survive any termination of
Executive’s employment or the expiration of the Term. 
 20. Miscellaneous. No provision of this Agreement may be
modified, waived or discharged unless such waiver, modification or discharge is agreed to in writing and signed by Executive and the Chief Executive Officer. No waiver by either party hereto at any time of any breach by the other party hereto of, or
of any lack of compliance with, any condition or provision of this Agreement to be performed by such other party shall be deemed a waiver of similar or dissimilar provisions or conditions at the same or at any prior or subsequent time. The
invalidity or unenforceability of any provision of this Agreement shall not affect the validity or enforceability of any other provision of this Agreement, which shall remain in full force and effect. 

21. Counterparts. This Agreement may be executed in several counterparts, each of which shall be deemed to be an original but all
of which together will constitute one and the same instrument. 
 22. Definitions. 

“Board” shall mean the Board of Directors of the Company or any committee thereof. 

“Cause” for termination by the Company of Executive’s employment shall mean (a) the willful and continued
failure by Executive to perform substantially the duties and responsibilities of Executive’s position with the Company after a written demand for substantial performance is delivered to Executive by the Board, which demand specifically
identifies the manner in which the Board believes that Executive has not substantially performed such duties or responsibilities and which, if capable of remedy or cure, provides Executive a period of fifteen (15) days to remedy or cure such
conduct; (b) the conviction of Executive by a court of competent jurisdiction of a felony; or (c) the willful engaging by Executive in fraud or dishonesty which is demonstrably and materially injurious to the Company or its reputation,
monetarily or otherwise. No act, or failure to act, on Executive’s part shall be deemed “willful” unless committed, or omitted by Executive in bad faith and without reasonable belief that Executive’s act or failure to act was in,
or not opposed to, the best interest of the Company. It is also expressly understood that Executive’s attention to matters not directly related to the business of the Company shall not provide a basis for termination for Cause so long as the
Board has approved Executive’s engagement in such activities. 
 “Change in Control” shall be deemed to
have occurred if any of the events set forth in any one of the following clauses shall have occurred: (a) any “person” or “group” (as defined in the Securities Exchange Act of 1934, as amended) becomes the beneficial owner
of a majority of the combined voting power of the then outstanding voting securities with respect to the election of the Board; (b) any merger, consolidation or similar transaction involving the Company, other than a transaction in which the
stockholders of the Company immediately prior to the transaction hold immediately thereafter in the same proportion as immediately prior to the transaction not less than 50% of the combined voting power of the

  
 - 9-

 
then voting securities with respect to the election of the Board of the resulting entity; (c) any sale of all or substantially all of the assets of the Company; or (d) any other
acquisition by a third party of all or substantially all of the business or assets of the Company, as determined by the Board, in its sole discretion. 
 Notwithstanding anything in the foregoing to the contrary, no Change in Control shall be deemed to have occurred for purposes of this Agreement by virtue of any transaction which results in Executive, or
a group of persons which includes Executive, acquiring, directly or indirectly, 25% or more of either the then outstanding shares of common stock of the Company or the combined voting power of the Company’s then outstanding securities.

 “Disability” shall occur when the Board determines, upon the advice of an independent qualified physician
selected by the Company, that Executive has become physically or mentally incapable of performing the essential functions of his job duties under this Agreement with or without reasonable accommodation, for ninety (90) consecutive days or one
hundred twenty (120) nonconsecutive days in any twelve (12) month period. For purposes of this Section, at the Company’s request, Executive agrees to make himself available and to cooperate in a reasonable examination by such
independent physician. 
 “Good Reason” for termination by Executive of Executive’s employment shall mean
the occurrence (without Executive’s express written consent) of any one of the following acts by the Company, or failures by the Company to act: (a) a material change in Executive’s status or position as Executive Vice Chairman prior
to March 31, 2013, as a result of a diminution of Executive’s duties or responsibilities (other than, if applicable, any such change directly and solely attributable to the fact that the Company is no longer publicly owned) or the
assignment to Executive of any duties or responsibilities which are inconsistent with such status or position, or any removal of Executive from such position; (b) a material change in Executive’s status or position as Advisor to the Chief
Executive Officer on or after April 1, 2013, as a result of a diminution of Executive’s duties or responsibilities (other than, if applicable, any such change directly and solely attributable to the fact that the Company is no longer
publicly owned) or the assignment to Executive of any duties or responsibilities which are inconsistent with such status or position, or any removal of Executive from such position; (c) a material reduction in Executive’s Base Salary;
provided that the reduction in Base Salary provided in Section 7(a) and any proportional reduction applied to the base salaries of other officers of equal or senior seniority shall not constitute “Good Reason”; (d) a
material reduction in the maximum 2013 Fiscal Year Bonus target during the 2013 Fiscal Year; or (e) the Company requiring Executive to be based at an office that is greater than 50 miles from where Executive’s office is located except for
required travel on the Company’s business to an extent substantially consistent with the business travel obligations typically undertaken by Executive; provided that this clause (e) shall not apply to the extent that any new office
location is located less than 50 miles from Executive’s residence. Additionally, before Executive may resign for Good Reason, (i) Executive must provide written notice to the Company describing the event, condition or conduct giving rise
to Good Reason within fifteen (15) days of the initial occurrence of the event or condition, (ii) the Company must fail to remedy or cure the alleged Good Reason within the thirty (30) day period after receipt of such notice if
capable of being cured, and (iii) Executive’s resignation is effective not later than fifteen (15) days after the end of the cure period. 
 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 

  
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 IN WITNESS WHEREOF, the Company and Executive have signed this Agreement as of the date
first above written. 
  

					
	NETSCOUT SYSTEMS, INC.
		
	By:	 	 /s/ Anil Singhal

		 	Name: Anil Singhal
		 	Title: CEO
	
	EXECUTIVE:
	
	 /s/ David Sommers

	David Sommers

  
 - 11-

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