Document:

2003 Stock Plan, as amended, including addendums and sub-plans

 Exhibit 10.1 
 IMPERVA, INC. 
 2003 STOCK
PLAN 
 ADOPTED FEBRUARY 24, 2003 

APPROVED BY STOCKHOLDERS MAY 22, 2003 

AMENDED JULY 28, 2006, JUNE 1,
2007, AUGUST 28, 2007, MAY 5, 2009, JUNE 4, 2010, AND 
 AUGUST 25, 2010.  

 TABLE OF CONTENTS 

 

							
	 	  	Page	 
	 SECTION 1. ESTABLISHMENT AND PURPOSE
	  	 	1	  
		
	 SECTION 2. ADMINISTRATION
	  	 	1	  
	 (a)
	  	 Committees of the Board of Directors
	  	 	1	  
	 (b)
	  	 Authority of the Board of Directors
	  	 	1	  
		
	 SECTION 3. ELIGIBILITY
	  	 	1	  
	 (a)
	  	 General Rule
	  	 	1	  
	 (b)
	  	 Ten-Percent Stockholders
	  	 	1	  
		
	 SECTION 4. STOCK SUBJECT TO PLAN
	  	 	2	  
	 (a)
	  	 Basic Limitation
	  	 	2	  
	 (b)
	  	 Additional Shares
	  	 	2	  
		
	 SECTION 5. TERMS AND CONDITIONS OF AWARDS OR SALES
	  	 	2	  
	 (a)
	  	 Stock Purchase Agreement
	  	 	2	  
	 (b)
	  	 Duration of Offers and Nontransferability of Rights
	  	 	2	  
	 (c)
	  	 Purchase Price
	  	 	2	  
	 (d)
	  	 Withholding Taxes
	  	 	3	  
	 (e)
	  	 Restrictions on Transfer of Shares and Minimum Vesting
	  	 	3	  
		
	 SECTION 6. TERMS AND CONDITIONS OF OPTIONS
	  	 	3	  
	 (a)
	  	 Stock Option Agreement
	  	 	3	  
	 (b)
	  	 Number of Shares
	  	 	3	  
	 (c)
	  	 Exercise Price
	  	 	3	  
	 (d)
	  	 Exercisability
	  	 	3	  
	 (e)
	  	 Accelerated Exercisability
	  	 	4	  
	 (f)
	  	 Basic Term
	  	 	4	  
	 (g)
	  	 Termination of Service (Except by Death)
	  	 	4	  
	 (h)
	  	 Leaves of Absence
	  	 	5	  
	 (i)
	  	 Death of Optionee
	  	 	5	  
	 (j)
	  	 Restrictions on Transfer of Shares and Minimum Vesting
	  	 	5	  
	 (k)
	  	 Transferability of Options
	  	 	5	  
	 (l)
	  	 Withholding Taxes
	  	 	6	  
	 (m)
	  	 No Rights as a Stockholer
	  	 	6	  
	 (n)
	  	 Modification, Extension and Assumption of Options
	  	 	6	  
		
	 SECTION 7. PAYMENT FOR SHARES
	  	 	6	  
	 (a)
	  	 General Rule
	  	 	6	  
	 (b)
	  	 Surrender of Stock
	  	 	6	  
	 (c)
	  	 Services Rendered
	  	 	7	  
	 (d)
	  	 Promissory Note
	  	 	7	  
	 (e)
	  	 Exercise/Sale
	  	 	7	  
	 (f)
	  	 Exercise/Pledge
	  	 	7	  
		
	 SECTION 8. ADJUSTMENT OF SHARES
	  	 	7	  
	 (a)
	  	 General
	  	 	7	  

  
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		 	 (b)
	    	Mergers and Consolidations	  	 	7	  
		 	 (c)
	    	Reservation of Rights	  	 	8	  
		
	 SECTION 9. SECURITIES LAW REQUIREMENTS
	  	 	8	  
		 	 (a)
	    	General	  	 	8	  
		 	 (b)
	    	Financial Reports	  	 	8	  
		
	 SECTION 10. NO RETENTION RIGHTS
	  	 	8	  
		
	 SECTION 11. DURATION AND AMENDMENTS
	  	 	9	  
		 	 (a)
	    	Term of the Plan	  	 	9	  
		 	 (b)
	    	Right to Amend or Terminate the Plan	  	 	9	  
		 	 (c)
	    	Effect of Amendment or Termination	  	 	9	  
		
	 SECTION 12. DEFINITIONS
	  	 	9	  

  
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 IMPERVA, INC. 

2003 STOCK PLAN 
 SECTION 1. ESTABLISHMENT AND PURPOSE. 
 The purpose of the Plan is to offer
selected persons an opportunity to acquire a proprietary interest in the success of the Company, or to increase such interest, by purchasing Shares of the Company’s Stock. The Plan provides both for the direct award or sale of Shares and for
the grant of Options to purchase Shares. Options granted under the Plan may be Nonstatutory Options or ISOs intended to qualify under Section 422 of the Code. 
 Capitalized terms are defined in Section 13. 
 SECTION 2. ADMINISTRATION. 

(a) Committees of the Board of Directors. The Plan may be administered by one or more Committees. Each Committee shall consist of
one or more members of the Board of Directors who have been appointed by the Board of Directors. Each Committee shall have such authority and be responsible for such functions as the Board of Directors has assigned to it. If no Committee has been
appointed, the entire Board of Directors shall administer the Plan. Notwithstanding the above, if a Committee has been appointed, the entire Board of Directors may also administer the Plan. Any reference to the Board of Directors in the Plan shall
be construed as a reference to the Committee (if any) to whom the Board of Directors has assigned a particular function. 
 (b)
Authority of the Board of Directors. Subject to the provisions of the Plan, the Board of Directors shall have full authority and discretion to take any actions it deems necessary or advisable for the administration of the Plan. All decisions,
interpretations and other actions of the Board of Directors shall be final and binding on all Purchasers, all Optionees and all persons deriving their rights from a Purchaser or Optionee. 
 SECTION 3. ELIGIBILITY. 
 (a) General Rule. Only Employees, Outside
Directors and Consultants shall be eligible for the grant of Nonstatutory Options or the direct award or sale of Shares. Only Employees shall be eligible for the grant of ISOs. 

(b) Ten-Percent Stockholders. A person who owns more than 10% of the total combined voting power of all classes of outstanding
stock of the Company, its Parent or any of its Subsidiaries shall not be eligible for designation as an Optionee or Purchaser unless (i) the Exercise Price is at least 110% of the Fair Market Value of a Share on the date of grant, (ii) the
Purchase Price (if any) is at least 100% of the Fair Market Value of a Share and (iii) in the case of an ISO, such ISO by its terms is not exercisable after the expiration of five years from the date of grant. For purposes of this
Subsection (b), in determining stock ownership, the attribution rules of Section 424(d) of the Code shall be applied. 

 SECTION 4. STOCK SUBJECT TO PLAN. 

(a) Basic Limitation. Not more than 11,674,5971 Shares may be issued under the Plan (subject to Subsection (b) below and Section 8). The number of Shares
that are subject to Options or other rights outstanding at any time under the Plan shall not exceed the number of Shares that then remain available for issuance under the Plan. The Company, during the term of the Plan, shall at all times reserve and
keep available sufficient Shares to satisfy the requirements of the Plan. Shares offered under the Plan may be authorized but unissued Shares or treasury Shares. 

(b) Additional Shares. In the event that any outstanding Option or other right for any reason expires or is
canceled or otherwise terminated, the Shares allocable to the unexercised portion of such Option or other right shall again be available for the purposes of the Plan. In the event that Shares issued under the Plan are reacquired by the Company
pursuant to any forfeiture provision, right of repurchase or right of first refusal, such Shares shall again be available for the purposes of the Plan, except that the aggregate number of Shares which may be issued upon the exercise of ISOs shall in
no event exceed 11,674,5971 Shares (subject to adjustment
pursuant to Section 8). 
 SECTION 5. TERMS AND CONDITIONS OF AWARDS OR SALES. 

(a) Stock Purchase Agreement. Each award or sale of Shares under the Plan (other than upon exercise of an Option) shall be
evidenced by a Stock Purchase Agreement between the Purchaser and the Company. Such award or sale shall be subject to all applicable terms and conditions of the Plan and may be subject to any other terms and conditions which are not inconsistent
with the Plan and which the Board of Directors deems appropriate for inclusion in a Stock Purchase Agreement. The provisions of the various Stock Purchase Agreements entered into under the Plan need not be identical. 

(b) Duration of Offers and Nontransferability of Rights. Any right to acquire Shares under the Plan (other than an Option) shall
automatically expire if not exercised by the Purchaser within 30 days after the grant of such right was communicated to the Purchaser by the Company. Such right shall not be transferable and shall be exercisable only by the Purchaser to whom such
right was granted. 
 (c) Purchase Price. The Purchase Price of Shares to be offered under the Plan shall not be less
than 85% of the Fair Market Value of such Shares, and a higher percentage may be required by Section 3(b). Subject to the preceding sentence, the Board of Directors shall determine the Purchase Price at its sole discretion. The Purchase Price
shall be payable in a form described in Section 7. 
  

 

	1 	 Reflects the initial 2,700,000 shares approved by the Board on February 24, 2003, and by the stockholders on May 22, 2003; a 1,722,203 share
increase approved by the Board on July 28, 2006, and by the stockholders on December 10, 2006; a 1,000,000 share increase approved by the Board on June 1, 2007, and by the stockholders on August 8, 2007; a 1,353,495 share
increase approved by the Board on August 28, 2007, and by the stockholders on November 1, 2007; a 941,983 share increase approved by the Board on May 5, 2009 and by the Stockholders on June 10, 2009; a 156,916 share increase
approved by the Board on June 4, 2010 and by the Stockholders on October 28, 2010; and a 3,800,000 share increase approved by the Board on August 25, 2010 and by the Stockholders on October 28, 2010. 

  
 2 

 (d) Withholding Taxes. As a condition to the purchase of Shares, the Purchaser shall
make such arrangements as the Board of Directors may require for the satisfaction of any federal, state, local or foreign withholding tax obligations that may arise in connection with such purchase. 

(e) Restrictions on Transfer of Shares and Minimum Vesting. Any Shares awarded or sold under the Plan shall be subject to such
special forfeiture conditions, rights of repurchase, rights of first refusal and other transfer restrictions as the Board of Directors may determine. Such restrictions shall be set forth in the applicable Stock Purchase Agreement and shall apply in
addition to any restrictions that may apply to holders of Shares generally. In the case of a Purchaser who is not an officer of the Company, an Outside Director or a Consultant: 

(i) Any right to repurchase the Purchaser’s Shares at the original Purchase Price (if any) upon termination of the
Purchaser’s Service shall lapse at least as rapidly as 20% per year over the five-year period commencing on the date of the award or sale of the Shares; 

(ii) Any such repurchase right may be exercised only for cash or for cancellation of indebtedness incurred in purchasing
the Shares; and 
 (iii) Any such repurchase right may be exercised only within 90 days after the termination of
the Purchaser’s Service. 
 SECTION 6. TERMS AND CONDITIONS OF OPTIONS. 

(a) Stock Option Agreement. Each grant of an Option under the Plan shall be evidenced by a Stock Option Agreement between the
Optionee and the Company. The Option shall be subject to all applicable terms and conditions of the Plan and may be subject to any other terms and conditions which are not inconsistent with the Plan and which the Board of Directors deems appropriate
for inclusion in a Stock Option Agreement. The provisions of the various Stock Option Agreements entered into under the Plan need not be identical. 
 (b) Number of Shares. Each Stock Option Agreement shall specify the number of Shares that are subject to the Option and shall provide for the adjustment of such number in accordance with
Section 8. The Stock Option Agreement shall also specify whether the Option is an ISO or a Nonstatutory Option. 
 (c)
Exercise Price. Each Stock Option Agreement shall specify the Exercise Price. The Exercise Price of an ISO shall not be less than 100% of the Fair Market Value of a Share on the date of grant, and a higher percentage may be required by
Section 3(b). The Exercise Price of a Nonstatutory Option shall not be less than 85% of the Fair Market Value of a Share on the date of grant, and a higher percentage may be required by Section 3(b). Subject to the preceding two sentences,
the Exercise Price under any Option shall be determined by the Board of Directors at its sole discretion. The Exercise Price shall be payable in a form described in Section 7. 

(d) Exercisability. Each Stock Option Agreement shall specify the date when all or any installment of the Option is to become
exercisable. No Option shall be exercisable 

  
 3 

 
unless the Optionee has delivered an executed copy of the Stock Option Agreement to the Company. In the case of an Optionee who is not an officer of the Company, an Outside Director or a
Consultant, an Option shall become exercisable at least as rapidly as 20% per year over the five-year period commencing on the date of grant. Subject to the preceding sentence, the Board of Directors shall determine the exercisability
provisions of the Stock Option Agreement at its sole discretion. 
 (e) Accelerated Exercisability. Unless the applicable
Stock Option Agreement provides otherwise, all of an Optionee’s Options shall become exercisable in full if (i) the Company is subject to a Change in Control before the Optionee’s Service terminates, (ii) such Options do not
remain outstanding, (iii) such Options are not assumed by the surviving corporation or its parent, (iv) the surviving corporation or its parent does not substitute options with substantially the same terms for such Options, and
(v) the full value of this option (whether or not exercisable) is not settled in cash or cash equivalents. 
 (f) Basic
Term. The Stock Option Agreement shall specify the term of the Option. The term shall not exceed 10 years from the date of grant, and a shorter term may be required by Section 3(b). Subject to the preceding sentence, the Board of Directors
at its sole discretion shall determine when an Option is to expire. 
 (g) Termination of Service (Except by Death). If
an Optionee’s Service terminates for any reason other than the Optionee’s death, then the Optionee’s Options shall expire on the earliest of the following occasions: 

(i) The expiration date determined pursuant to Subsection (f) above; 

(ii) The date 3 months after the termination of the Optionee’s Service for any reason other than Disability, or such
later date as the Board of Directors may determine; or 
 (iii) The date 6 months after the termination of the
Optionee’s Service by reason of Disability, or such other date as the Board of Directors may determine (but not less than six months after the termination of the Optionee’s Service by reason of Disability). 

The Optionee may exercise all or part of the Optionee’s Options at any time before the expiration of such Options under the preceding sentence, but
only to the extent that such Options had become exercisable before the Optionee’s Service terminated (or became exercisable as a result of the termination) and the underlying Shares had vested before the Optionee’s Service terminated (or
vested as a result of the termination). The balance of such Options shall lapse when the Optionee’s Service terminates. In the event that the Optionee dies after the termination of the Optionee’s Service but before the expiration of the
Optionee’s Options, all or part of such Options may be exercised (prior to expiration) by the executors or administrators of the Optionee’s estate or by any person who has acquired such Options directly from the Optionee by beneficiary
designation, bequest or inheritance, but only to the extent that such Options had become exercisable before the Optionee’s Service terminated (or became exercisable as a result 

  
 4 

 
of the termination) and the underlying Shares had vested before the Optionee’s Service terminated (or vested as a result of the termination). 

(h) Leaves of Absence. For purposes of Subsection (g) above, Service shall be deemed to continue while the Optionee is on a
bona fide leave of absence, if such leave was approved by the Company in writing and if continued crediting of Service for this purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). 

(i) Death of Optionee. If an Optionee dies while the Optionee is in Service, then the Optionee’s Options shall expire on the
earlier of the following dates: 
 (i) The expiration date determined pursuant to Subsection (f) above; or

 (ii) The date 12 months after the Optionee’s death, or such later date as the Board of Directors may
determine. 
 All or part of the Optionee’s Options may be exercised at any time before the expiration of such Options under the preceding
sentence by the executors or administrators of the Optionee’s estate or by any person who has acquired such Options directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that such Options had
become exercisable before the Optionee’s death (or became exercisable as a result of the death) and the underlying Shares had vested before the Optionee’s death (or vested as a result of the Optionee’s death). The balance of such
Options shall lapse when the Optionee dies. 
 (j) Restrictions on Transfer of Shares and Minimum Vesting. Any Shares
issued upon exercise of an Option shall be subject to such special forfeiture conditions, rights of repurchase, rights of first refusal and other transfer restrictions as the Board of Directors may determine. Such restrictions shall be set forth in
the applicable Stock Option Agreement and shall apply in addition to any restrictions that may apply to holders of Shares generally. In the case of an Optionee who is not an officer of the Company, an Outside Director or a Consultant: 

(i) Any right to repurchase the Optionee’s Shares at the original Exercise Price upon termination of the
Optionee’s Service shall lapse at least as rapidly as 20% per year over the five-year period commencing on the date of the option grant; 
 (ii) Any such right may be exercised only for cash or for cancellation of indebtedness incurred in purchasing the Shares; and 

(iii) Any such right may be exercised only within 90 days after the later of (A) the termination of the
Optionee’s Service or (B) the date of the option exercise. 
 (k) Transferability of Options. An Option shall
be transferable by the Optionee only by (i) a beneficiary designation, (ii) a will or (iii) the laws of descent and distribution, except as provided in the next sentence. If the applicable Stock Option Agreement

  
 5 

 
so provides, an Nonstatutory Option shall also be transferable by the Optionee by (i) a gift to a member of the Optionee’s Immediate Family or (ii) a gift to an inter vivos
or testamentary trust in which members of the Optionee’s Immediate Family have a beneficial interest of more than 50% and which provides that such Nonstatutory Option is to be transferred to the beneficiaries upon the Optionee’s death. An
ISO may be exercised during the lifetime of the Optionee only by the Optionee or by the Optionee’s guardian or legal representative. Except as expressly provided herein or in the applicable Stock Option Agreement, no Option or interest therein
may be transferred, assigned, pledged or hypothecated by the Optionee during the Optionee’s lifetime, whether by operation of law or otherwise, or be made subject to execution, attachment or similar process. 

(l) Withholding Taxes. As a condition to the exercise of an Option, the Optionee shall make such arrangements as the Board of
Directors may require for the satisfaction of any federal, state, local or foreign withholding tax obligations that may arise in connection with such exercise. The Optionee shall also make such arrangements as the Board of Directors may require for
the satisfaction of any federal, state, local or foreign withholding tax obligations that may arise in connection with the disposition of Shares acquired by exercising an Option. 

(m) No Rights as a Stockholder. An Optionee, or a transferee of an Optionee, shall have no rights as a stockholder with respect to
any Shares covered by the Optionee’s Option until such person becomes entitled to receive such Shares by filing a notice of exercise and paying the Exercise Price pursuant to the terms of such Option. 

(n) Modification, Extension and Assumption of Options. Within the limitations of the Plan, the Board of Directors may modify,
extend or assume outstanding Options or may accept the cancellation of outstanding Options (whether granted by the Company or another issuer) in return for the grant of new Options for the same or a different number of Shares and at the same or a
different Exercise Price. The foregoing notwithstanding, no modification of an Option shall, without the consent of the Optionee, impair the Optionee’s rights or increase the Optionee’s obligations under such Option. 

SECTION 7. PAYMENT FOR SHARES. 
 (a) General Rule. The entire Purchase Price or Exercise Price of Shares issued under the Plan shall be payable in cash or cash equivalents at the time when such Shares are purchased, except as
otherwise provided in this Section 7. 
 (b) Surrender of Stock. At the discretion of the Board of Directors and to
the extent that a Stock Option Agreement so provides, all or any part of the Exercise Price may be paid by surrendering, or attesting to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company
in good form for transfer and shall be valued at their Fair Market Value on the date when the Option is exercised. The Optionee shall not surrender, or attest to the ownership of, Shares in payment of the Exercise Price if such action would cause
the Company to recognize compensation expense (or additional compensation expense) with respect to the Option for financial reporting purposes. 

  
 6 

 (c) Services Rendered. At the discretion of the Board of Directors, Shares may be
awarded under the Plan in consideration of services rendered to the Company, a Parent or a Subsidiary prior to the award. 
 (d)
Promissory Note. At the discretion of the Board of Directors and to the extent that a Stock Option Agreement or Stock Purchase Agreement so provides, all or a portion of the Exercise Price or Purchase Price (as the case may be) of Shares
issued under the Plan may be paid with a full-recourse promissory note. However, the par value of the Shares, if newly issued, shall be paid in cash or cash equivalents. The Shares shall be pledged as security for payment of the principal amount of
the promissory note and interest thereon. The interest rate payable under the terms of the promissory note shall not be less than the minimum rate (if any) required to avoid the imputation of additional interest under the Code. Subject to the
foregoing, the Board of Directors (at its sole discretion) shall specify the term, interest rate, amortization requirements (if any) and other provisions of such note. 
 (e) Exercise/Sale. At the discretion of the Board of Directors and to the extent that a Stock Option Agreement so provides, and if Stock is publicly traded, payment may be made all or in part by
the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to the Company in payment of all or part of the Exercise
Price and any withholding taxes. 
 (f) Exercise/Pledge. At the discretion of the Board of Directors and to the extent
that a Stock Option Agreement so provides, and if Stock is publicly traded, payment may be made all or in part by the delivery (on a form prescribed by the Company) of an irrevocable direction to pledge Shares to a securities broker or lender
approved by the Company, as security for a loan, and to deliver all or part of the loan proceeds to the Company in payment of all or part of the Exercise Price and any withholding taxes. 
 SECTION 8. ADJUSTMENT OF SHARES. 
 (a) General. In the event of a
subdivision of the outstanding Stock, a declaration of a dividend payable in Shares, a declaration of an extraordinary dividend payable in a form other than Shares in an amount that has a material effect on the Fair Market Value of the Stock, a
combination or consolidation of the outstanding Stock into a lesser number of Shares, a recapitalization, a spin-off, a reclassification or a similar occurrence, the Board of Directors shall make appropriate adjustments in one or more of
(i) the number of Shares available for future grants under Section 4, (ii) the number of Shares covered by each outstanding Option or (iii) the Exercise Price under each outstanding Option. 

(b) Mergers and Consolidations. In the event that the Company is a party to a merger or consolidation, outstanding Options shall
be subject to the agreement of merger or consolidation. Such agreement shall provide for: 
 (i) The continuation
of such outstanding Options by the Company (if the Company is the surviving corporation); 

  
 7 

 (ii) The assumption of the Plan and such outstanding Options by the
surviving corporation or its parent; 
 (iii) The substitution by the surviving corporation or its parent of
options with substantially the same terms for such outstanding Options; 
 (iv) The full exercisability of such
outstanding Options and full vesting of the Shares subject to such Options, followed by the cancellation of such Options; or 
 (v) The settlement of the full value of such outstanding Options (whether or not then exercisable) in cash or cash equivalents, followed by the cancellation of such Options. 

(c) Reservation of Rights. Except as provided in this Section 8, an Optionee or Purchaser shall have no rights by reason of
(i) any subdivision or consolidation of shares of stock of any class, (ii) the payment of any dividend or (iii) any other increase or decrease in the number of shares of stock of any class. Any issuance by the Company of shares of
stock of any class, or securities convertible into shares of stock of any class, shall not affect, and no adjustment by reason thereof shall be made with respect to, the number or Exercise Price of Shares subject to an Option. The grant of an Option
pursuant to the Plan shall not affect in any way the right or power of the Company to make adjustments, reclassifications, reorganizations or changes of its capital or business structure, to merge or consolidate or to dissolve, liquidate, sell or
transfer all or any part of its business or assets. 
 SECTION 9. SECURITIES LAW REQUIREMENTS. 

(a) General. Shares shall not be issued under the Plan unless the issuance and delivery of such Shares comply with (or are exempt
from) all applicable requirements of law, including (without limitation) the Securities Act of 1933, as amended, the rules and regulations promulgated thereunder, state securities laws and regulations, including the Israeli securities law and
regulation, if applicable, and the regulations of any stock exchange or other securities market on which the Company’s securities may then be traded. 
 (b) Financial Reports. The Company each year shall furnish to Optionees, Purchasers and stockholders who have received Stock under the Plan its balance sheet and income statement, unless such
Optionees, Purchasers or stockholders are key Employees whose duties with the Company assure them access to equivalent information. Such balance sheet and income statement need not be audited. 

SECTION 10. NO RETENTION RIGHTS. 
 Nothing in the Plan or in any right or Option granted under the Plan shall confer upon the Purchaser or Optionee any right to continue in Service for any period of specific duration or interfere with or
otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Purchaser or Optionee) or of the Purchaser or Optionee, which rights are hereby expressly reserved by each, to terminate his or her
Service at any time and for any reason, with or without cause. 

  
 8 

 SECTION 11. DURATION AND AMENDMENTS. 

(a) Term of the Plan. The Plan, as set forth herein, shall become effective on the date of its adoption by the Board of Directors,
subject to the approval of the Company’s stockholders. If the stockholders fail to approve the Plan within 12 months after its adoption by the Board of Directors, then any grants or exercises of Options or sales of Shares that have already
occurred under the Plan shall be rescinded and no additional grants, exercises or sales shall thereafter be made under the Plan. The Plan shall terminate automatically 10 years after the later of (i) its adoption by the Board of Directors or
(ii) the most recent increase in the number of Shares reserved under Section 4 that was approved by the Company’s stockholders. The Plan may be terminated on any earlier date pursuant to Subsection (b) below. 

(b) Right to Amend or Terminate the Plan. The Board of Directors may amend, suspend or terminate the Plan at any time and for any
reason; provided, however, that any amendment of the Plan shall be subject to the approval of the Company’s stockholders if it (i) increases the number of Shares available for issuance under the Plan (except as provided in Section 8)
or (ii) materially changes the class of persons who are eligible for the grant of ISOs. Stockholder approval shall not be required for any other amendment of the Plan. If the stockholders fail to approve an increase in the number of Shares
reserved under Section 4 within 12 months after its adoption by the Board of Directors, then any grants, exercises or sales that have already occurred in reliance on such increase shall be rescinded and no additional grants, exercises or sales
shall thereafter be made in reliance on such increase. 
 (c) Effect of Amendment or Termination. No Shares shall be
issued or sold under the Plan after the termination thereof, except upon exercise of an Option or exercise of a purchase right, each granted prior to such termination. The termination of the Plan, or any amendment thereof, shall not affect any Share
previously issued or any Option previously granted under the Plan. 
 SECTION 12. DEFINITIONS. 

(a) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time. 

(b) “Change in Control” shall mean: 

(i) The consummation of a merger or consolidation of the Company with or into another entity or any other corporate
reorganization, if persons who were not stockholders of the Company immediately prior to such merger, consolidation or other reorganization own immediately after such merger, consolidation or other reorganization 50% or more of the voting power of
the outstanding securities of each of (A) the continuing or surviving entity and (B) any direct or indirect parent corporation of such continuing or surviving entity; or 

(ii) The sale, transfer or other disposition of all or substantially all of the Company’s assets. 

  
 9 

 A transaction shall not constitute a Change in Control if its sole purpose is to change the state of the
Company’s incorporation or to create a holding company that will be owned in substantially the same proportions by the persons who held the Company’s securities immediately before such transaction. 

(c) “Code” shall mean the Internal Revenue Code of 1986, as amended. 

(d) “Committee” shall mean a committee of the Board of Directors, as described in Section 2(a). 

(e) “Company” shall mean Imperva, Inc., a Delaware corporation. 

(f) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a
consultant or advisor, excluding Employees and Outside Directors. 
 (g) “Disability” shall mean that the
Optionee is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which has lasted, or can expected to last, for a continuous period of not less than 12 months, at the
Company’s or the Subsidiary’s, as applicable, discretion. 
 (h) “Employee” shall mean any individual
who is a common-law employee of the Company, a Parent or a Subsidiary. An individual shall not cease to be an “Employee” upon the transfer of such individual’s employment among the Company and its Subsidiaries. 

(i) “Exercise Price” shall mean the amount for which one Share may be purchased upon exercise of an Option, as specified
by the Board of Directors in the applicable Stock Option Agreement. 
 (j) “Fair Market Value” shall mean the
fair market value of a Share, as determined by the Board of Directors in good faith. Such determination shall be conclusive and binding on all persons. 
 (k) “Immediate Family” shall mean any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law,
brother-in-law or sister-in-law and shall include adoptive relationships. 
 (l) “ISO” shall mean an employee
incentive stock option described in Section 422(b) of the Code. 
 (m) “Nonstatutory Option” shall mean a
stock option not described in Sections 422(b) or 423(b) of the Code . 
 (n) “Option” shall mean an ISO or
Nonstatutory Option granted under the Plan and entitling the holder to purchase Shares. 
 (o) “Optionee” shall
mean a person who holds an Option. 

  
 10 

 (p) “Outside Director” shall mean a member of the Board of Directors who is
not an Employee. 
 (q) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of
corporations ending with the Company, if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. A corporation that
attains the status of a Parent on a date after the adoption of the Plan shall be considered a Parent commencing as of such date. 
 (r) “Plan” shall mean this Imperva, Inc. 2003 Stock Plan. 
 (s)
“Purchase Price” shall mean the consideration for which one Share may be acquired under the Plan (other than upon exercise of an Option), as specified by the Board of Directors. 

(t) “Purchaser” shall mean a person to whom the Board of Directors has offered the right to acquire Shares under the
Plan (other than upon exercise of an Option). 
 (u) “Service” shall mean service as an Employee, Outside
Director or Consultant. 
 (v) “Share” shall mean one share of Stock, as adjusted in accordance with
Section 8 (if applicable). 
 (w) “Stock” shall mean the Common Stock of the Company, with a par value of
$0.0001 per Share. 
 (x) “Stock Option Agreement” shall mean the agreement between the Company and an Optionee
that contains the terms, conditions and restrictions pertaining to the Optionee’s Option. 
 (y) “Stock Purchase
Agreement” shall mean the agreement between the Company and a Purchaser who acquires Shares under the Plan that contains the terms, conditions and restrictions pertaining to the acquisition of such Shares. 

(z) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain of corporations beginning with
the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. A corporation
that attains the status of a Subsidiary on a date after the adoption of the Plan shall be considered a Subsidiary commencing as of such date. 

  
 11 

 Neither this document, nor any award agreement connected with it, is an approved prospectus for the
purposes of section 85(1) of the Financial Services and Markets Act 2000 (“FSMA”) and no offer of transferable securities to the public (for the purposes of section 102B of FSMA) is being made in connection with the UK Sub-Plan of the
Imperva, Inc 2003 Stock Plan (the “Sub-Plan”). The Sub-Plan is exclusively available to bona fide employees and former employees of Imperva, Inc Group. 
 THE UK SUB-PLAN OF THE 
 IMPERVA, INC. 2003 STOCK PLAN 

(as amended July 28 2006) 
  

	1.	The purpose of this Sub-Plan is to provide incentives for UK tax resident present and future employees of Imperva Inc. through the grant of incentive awards.

  

	2.	This Sub-Plan is governed by the Imperva Inc. 2003 Stock Plan (the “Plan”) and all of the provisions of this Sub-Plan shall be identical to those of the Plan
SAVE THAT (i) “Sub-Plan” shall be substituted for “Plan”, and (ii) the following provisions shall be stated in this Sub-Plan in order to accommodate the specific requirements of UK law. 

 

	3.	The Sub-Plan shall become effective on the date of its adoption by the Board. The Sub-Plan shall terminate automatically on the date on which the term of the Plan
terminates in accordance with Section 11 of the Plan. The Sub-Plan may be terminated by the Board of Directors on any earlier date. 

  

	4.	References to ISOs and Non-statutory Options in the Plan shall not apply to Options granted under the Sub-Plan. 

 

	5.	Options granted under the Sub-Plan shall be known as UK Unapproved Options. 

 

	6.	Section 3(a) – Eligibility of the Plan shall be substituted by the following: 

 

	 	“(a)	General Rule. Only Employees shall be eligible for the grant of UK Unapproved Options or the direct award or sale of shares under the Sub-Plan.”

  

	7.	Section 5 – Terms and Conditions of Awards or Sales 

 This section shall not apply in its entirety. 
  

	8.	Section 6 – Terms and Conditions of Options 

 The last sentence of Section 6(b) shall be deleted. 
 The first three
sentences of Section 6(c) shall be deleted and substituted by the following: 
  

	 	“(c)	Exercise Price. Each Stock Option Agreement shall specify the Exercise Price. The Exercise Price of an Option shall not be less than 100% of the Fair Market
Value of a Share on the date of grant and a higher percentage may be required by Section 3(b).” 

  
 1 

 In Sections 6(g) and 6(i) the following words shall be deleted: 

“ or by any person who has acquired such Options directly from the Optionee by beneficiary designation, bequest or inheritance”

 In Section 6(j) the following words shall be deleted: 

“,an outside Director or a Consultant” 
 Section 6(k) shall be deleted and substituted by the following: 
  

	 	“(k)	Transferability of Options An Option shall not be transferable during the lifetime of the Optionholder but may be transferred to the Optionee’s executors or
personal representatives on death.” 

 Section 6(n) shall be deleted and substituted by the following:

  

	 	“(n)	Modification and Extension of Options Within the limitations of the Plan, the Board of Directors may modify or extend outstanding Options or may accept the
cancellation of outstanding Options (whether granted by the Company or another issuer) in return for the grant of new Options for the same or a different number of Shares and at the same or a different Exercise Price. The foregoing notwithstanding,
no modification of an Option shall, without the consent of the Optionee, impair the Optionee’s rights or increase the Optionee’s obligations under such Option.” 

 

	9.	Section 12 – Definitions 

 Sections 12(f), 12(k), 12(l), 12(m), 12(p), 12(s), 12(t), 12(z) shall not apply. 

Section 12(h) shall be amended by deleting “common-law”. 

Section 12(n) shall be substituted by the following: 
 ““Option” shall mean a UK Unapproved Option granted under the Plan and entitling the holder to purchase Shares.” 

Section 12(u) shall be amended by deleting the reference to “Outside Director or Consultant”. 

  
 2 

 IMPERVA, INC. 

APPENDIX A - ISRAEL 
 TO THE 2003 STOCK PLAN 
  

	1.	GENERAL 

  

	1.1.	This appendix (the “Appendix”) shall apply only to Optionees who are residents of the state of Israel or those who are deemed to be residents of the
state of Israel for the payment of tax. The provisions specified hereunder shall form an integral part of the Imperva, Inc. 2003 Stock Plan (hereinafter: the “Plan”), which applies to the issuance of options to purchase Shares of
Imperva, Inc. (hereinafter: the “Company”). According to the Plan, options to purchase the Company’s Shares may be issued to employees, directors, consultants and advisors of the Company or its Affiliates

  

	1.2	This Appendix is effective with respect to Options granted as of January 1, 2003 and shall comply with Amendment no. 132 of the Israeli Tax Ordinance.

  

	1.3.	This Appendix is to be read as a continuation of the Plan and only modifies options granted to Israeli Optionees so that they comply with the requirements set by the
Israeli law in general, and in particular with the provisions of Section 102 (as specified herein), as may be amended or replaced from time to time. For the avoidance of doubt, this Appendix does not add to or modify the Plan in respect of any
other category of Optioness. 

  

	1.5.	The Plan and this Appendix are complimentary to each other and shall be deemed as one. In any case of contradiction, whether explicit or implied, between the provisions
of this Appendix and the Plan, the provisions set out in the Appendix shall prevail. 

  

	1.6.	Any capitalized terms not specifically defined in this Appendix shall be construed according to the interpretation given to it in the Plan. 

	2.	DEFINITIONS 

  

	 	2.1	“Affiliate” means any “employing company” within the meaning of Section 102(a) of the Ordinance. 

 

	 	2.2	“Approved 102 Option” means an Option granted pursuant to Section 102(b) of the Ordinance and held in trust by a Trustee for the benefit of the
Optionee. 

  

	 	2.3	“Capital Gain Option (CGO)” means an Approved 102 Option elected and designated by the Company to qualify under the capital gain tax treatment in
accordance with the provisions of Section 102(b)(2) of the Ordinance. 

  

	 	2.4	“Controlling Shareholder” shall have the meaning ascribed to it in Section 32(9) of the Ordinance. 

 

	 	2.5	“Employee” means a person who is employed by the Company or its Affiliates, including an individual who is serving as a director or an office holder,
but excluding any Controlling Shareholder. 

  

	 	2.6	“ITA” means the Israeli Tax Authorities. 

  

	 	2.7	“Non-Employee” means a Consultant, Controlling Shareholder or any other person who is not an Employee. 

 

	 	2.8	“Ordinary Income Option (OIO)” means an Approved 102 Option elected and designated by the Company to qualify under the ordinary income tax treatment in
accordance with the provisions of Section 102(b)(1) of the Ordinance. 

  

	 	2.9	“Option” means an option to purchase one or more Shares of the Company pursuant to the Plan. 

 

	 	2.10	“102 Option” means any Option granted to Employees pursuant to Section 102 of the Ordinance. 

 

	 	2.11	“3(i) Option” means an Option granted pursuant to Section 3(i) of the Ordinance to any person who is a Non- Employee. 

 

	 	2.12	“Ordinance” means the 1961 Israeli Income Tax Ordinance [New Version] 1961 as now in effect or as hereafter amended. 

  
 - 2 -

	 	2.13	“Section 102” means section 102 of the Ordinance and any regulations, rules, orders or procedures promulgated thereunder as now in effect or as
hereafter amended. 

  

	 	2.14	“Trustee” means any individual appointed by the Company to serve as a trustee and approved by the ITA, all in accordance with the provisions of
Section 102(a) of the Ordinance. 

  

	 	2.15	“Unapproved 102 Option” means an Option granted pursuant to Section 102(c) of the Ordinance and not held in trust by a Trustee.

  

	 	3.	ISSUANCE OF OPTIONS 

  

	 	3.1	The persons eligible for participation in the Plan as Optionees shall include any Employees and/or Non-Employees of the Company or of any Affiliate; provided, however,
that (i) Employees may only be granted 102 Options; and (ii) Non-Employees and/or Controlling Shareholders may only be granted 3(i) Options 

  

	 	3.2	The Company may designate Options granted to Employees pursuant to Section 102 as Unapproved 102 Options or Approved 102 Options. 

 

	 	3.3	The grant of Approved 102 Options shall be made under this Appendix adopted by the Board of Directors, and shall be conditioned upon the approval of this Appendix by
the ITA. 

  

	 	3.4	Approved 102 Options may either be classified as Capital Gain Options (“CGOs”) or Ordinary Income Options (“OIOs”).

  

	 	3.5	No Approved 102 Options may be granted under this Appendix to any eligible Employee, unless and until, the Company’s election of the type of Approved 102 Options
as CGO or OIO granted to Employees (the “Election”), is appropriately filed with the ITA. Such Election shall become effective beginning the first date of grant of an Approved 102 Option under this Appendix and shall remain in
effect until the end of the year following the year during which the Company first granted Approved 102 Options. The Election shall obligate the Company to grant only the type of Approved 102 Option it has elected, and shall apply to all
Optionees who were granted Approved 102 Options during the period indicated herein, all in accordance with the provisions of Section 102(g) of the Ordinance. For the avoidance of doubt, such Election shall not prevent the Company from granting
Unapproved 102 Options simultaneously. 

  

	 	3.6	All Approved 102 Options must be held in trust by a Trustee, as described in Section 4 below. 

 

	 	3.7	For the avoidance of doubt, the designation of Unapproved 102 Options and Approved 102 Options shall be subject to the terms and conditions set forth in
Section 102. 

  
 - 3 -

	4.	TRUSTEE 

  

	 	4.1	Approved 102 Options which shall be granted under this Appendix and/or any Shares allocated or issued upon exercise of such Approved 102 Options and/or other shares
received subsequently following any realization of rights, shall be allocated or issued to the Trustee and held for the benefit of the Optionees for such period of time as required by Section 102 or any regulations, rules or orders or
procedures promulgated thereunder. In the case the requirements for Approved 102 Options are not met, then the Approved 102 Options shall be regarded as Unapproved 102 Options, all in accordance with the provisions of Section 102.

  

	 	4.2	Notwithstanding anything to the contrary, the Trustee shall not release any Shares allocated or issued upon exercise of Approved 102 Options prior to the full payment
of the Optionee’s tax liabilities arising from Approved 102 Options which were granted to him and/or any Shares allocated or issued upon exercise of such Options. 

 

	 	4.3	Upon receipt of Approved 102 Option, the Optionee will sign an undertaking to release the Trustee from any liability in respect of any action or decision duly taken and
bona fide executed in relation with this Appendix, or any Approved 102 Option or Share granted to him thereunder. 

  

	 	5.	THE OPTIONS 

 The terms
and conditions upon which the Options shall be issued and exercised, shall be as specified in the Stock Option Agreement to be executed pursuant to the Plan and to this Appendix. Each Stock Option Agreement shall state, inter alia, the number of
Shares to which the Option relates, the type of Option granted thereunder (whether a CGO, OIO, Unapproved 102 Option or a 3(i) Option), the vesting provisions and the exercise price. 

 

	6.	FAIR MARKET VALUE FOR TAX PURPOSE 

 Without derogating from Section 13(j) of the Plan and solely for the purpose of determining the tax liability pursuant to Section 102(b)(3) of the Ordinance, if at the date of grant the
Company’s Shares are listed on any established stock exchange or a national market system or if the Company’s Shares will be registered for trading within ninety (90) days following the date of grant of the CGOs, the fair market value
of the Shares at the date of grant shall be determined in accordance with the average value of the Company’s shares on the thirty (30) trading days preceding the date of grant or on the thirty (30) trading days following the date of
registration for trading, as the case may be. 

  
 - 4 -

	 	7.	EXERCISE OF OPTIONS 

Options shall be exercised by the Optionee by giving a written notice to the Company and/or to any third party designated by the Company
(the “Representative”), in such form and method as may be determined by the Company and, when applicable, by the Trustee, in accordance with the requirements of Section 102, which exercise shall be effective upon receipt of
such notice by the Company and/or the Representative and the payment of the exercise price for the number of Shares with respect to which the option is being exercised, at the Company’s or the Representative’s principal office. The notice
shall specify the number of Shares with respect to which the option is being exercised. 
  

	8.	ASSIGNABILITY AND SALE OF OPTIONS 

  

	 	8.1.	Notwithstanding any other provision of the Plan including without limitation Section 6(k) of the Plan, no Option or any right with respect thereto, purchasable
hereunder, whether fully paid or not, shall be assignable, transferable or given as collateral or any right with respect to them given to any third party whatsoever, and during the lifetime of the Optionee each and all of such Optionee’s rights
to purchase Shares hereunder shall be exercisable only by the Optionee. 

 Any such action made
directly or indirectly, for an immediate validation or for a future one, shall be void. 
  

	 	8.2	As long as Options or Shares purchased pursuant to thereto are held by the Trustee on behalf of the Optionee, all rights of the Optionee over the Shares are personal,
can not be transferred, assigned, pledged or mortgaged, other than by will or laws of descent and distribution. 

  

	 	9.	INTEGRATION OF SECTION 102 AND TAX ASSESSING OFFICER’S PERMIT 

  

	 	9.1.	With regards to Approved 102 Options, the provisions of the Plan and/or the Appendix and/or the Stock Option Agreement shall be subject to the provisions of
Section 102 and the Tax Assessing Officer’s permit, and the said provisions and permit shall be deemed an integral part of the Plan and of the Appendix and of the Stock Option Agreement. 

 

	 	9.2.	Any provision of Section 102 and/or the said permit which is necessary in order to receive and/or to keep any tax benefit pursuant to Section 102, which is
not expressly specified in the Plan or the Appendix or the Stock Option Agreement, shall be considered binding upon the Company and the Optionees. 

  
 - 5 -

	10.	DIVIDEND 

  

	10.1	Subject to the Company’s Incorporation Documents, with respect to all Shares (but excluding, for avoidance of any doubt, any unexercised Options) allocated or
issued upon the exercise of Options and held by the Optionee or by the Trustee as the case may be, the Optionee shall be entitled to receive dividends in accordance with the quantity of such Shares, and subject to any applicable taxation on
distribution of dividends. 

  

	10.2	During the period in which Shares are held by the Trustee on behalf of the Optionee, the cash dividends paid with respect thereto shall be paid directly to the
Optionee. 

  

	11.	TAX CONSEQUENCES 

  

	11.1	Any tax consequences arising from the grant or exercise of any Option, from the payment for Shares covered thereby or from any other event or act (of the Company,
and/or its Affiliates, and the Trustee or the Optionee), hereunder, shall be borne solely by the Optionee. The Company and/or its Affiliates, and/or the Trustee shall withhold taxes according to the requirements under the applicable laws, rules, and
regulations, including withholding taxes at source. Furthermore, the Optionee shall agree to indemnify the Company and/or its Affiliates and/or the Trustee and hold them harmless against and from any and all liability for any such tax or interest or
penalty thereon, including without limitation, liabilities relating to the necessity to withhold, or to have withheld, any such tax from any payment made to the Optionee. 

 

	11.2	The Company and/or, when applicable, the Trustee shall not be required to release any share certificate to any Optionee until all required payments have been fully
made. 

  

	12.	GOVERNING LAW & JURISDICTION 

 This Appendix shall be governed by and construed and enforced in accordance with the laws of the State of Israel applicable to contracts made and to be performed therein, without giving effect to the
principles of conflict of laws. The competent courts of Tel-Aviv, Israel shall have sole jurisdiction in any matters pertaining to this Appendix. 
 *    *    * 

  
 - 6 -

 IMPERVA, INC 
 2003 STOCK PLAN 
 ADDENDUM 

Terms and Conditions for French Option Grants 
 The following terms and conditions will apply in the case of Option grants to French residents and to those individuals who are otherwise subject to the laws of France. 

1. Definitions: All capitalized terms and expressions contained herein shall have the meanings ascribed to them in the Imperva
Inc. 2003 Stock Plan, it being specified that: 
 (a) “Applicable Laws” means the legal requirements relating
to the administration of stock option plans under U.S. state corporate laws, U.S. federal and state securities laws, the Code, any stock exchange or quotation system on which the Common Stock is listed or quoted and French corporate, securities,
labor and tax laws. 
 (b) “Employee” means (i) any person employed by the Company or a branch of the
Company or a Subsidiary in a salaried position within the meaning Applicable Laws, who does not own more than 10% of the voting power of all classes of stock of the Company, or any Parent or Subsidiary, and who is a resident of the Republic of
France or (ii) any person employed by the Company or a branch of the Company or a Subsidiary who is a resident of France for tax purposes or who performs his or her duties in France and is subject to French income social security contributions
on his or her remuneration. 
 (c) “Fair Market Value” means, as of any date, the dollar value of Common Stock
determined as follows: 
 (i) If the Common Stock is listed on any established stock exchange or a national market system,
including without limitation the Nasdaq Global Select Market or Nasdaq Global Market of the Nasdaq Stock Market, its Fair Market Value will be the average quotation price for the last 20 days preceding the date of determination for such stock (or
the average closing bid for such 20 day period, if no sales were reported) as quoted on such exchange or system and reported in The Wall Street Journal or such other source as the Administrator deems reliable; 

(ii) If the Common Stock is quoted on the Nasdaq Stock Market (but not on the Nasdaq Global Select Market or Nasdaq Global Market
thereof) or regularly quoted by a recognized securities dealer but selling prices are not reported, its Fair Market Value will be the mean between the high bid and low asked prices for the Common Stock for the last 20 days preceding the date of
determination; or 

 (iii) In the absence of an established market for the Common Stock, the Fair Market Value
thereof will be determined in good faith by the Board of Directors. 
 (d) “Optioned Stock” means stock
deriving from the exercise of an Option. 
 (e) “Subsidiary” means any participating subsidiary of the Company
located in the Republic of France and that falls within the definition of “subsidiary” within the meaning of Section L. 225-180 paragraph 1 of the French commercial code. 

(f) “Termination” means if the Optionee is an Employee, the last day of any statutory or contractual notice period
whether worked or not (provided, only the employer, and not the Optionee, may decide whether the Optionee works during the notice period) and irrespective of whether the termination of the employment agreement is due to resignation or dismissal of
the Employee for any reason whatsoever; if the Optionee is a corporate officer as defined in Section 2 of this Addendum, Termination means the date on which he or she effectively leaves his or her position as a corporate officer for any reason
whatsoever. 
 2. Eligibility: Options granted pursuant to this Addendum may be granted only to Employees. To the extent
applicable to the Company, the “Président du conseil d’administration”, the “membres du directoire”, the “Directeur general”, the “directeurs généraux
délégués”, the “Gérant” of a company with capital divided by shares who are not also Employees of a Subsidiary in accordance with a valid employment agreement may also be granted Options
hereunder provided that the Optioned Stock are listed. For the purpose of this Addendum, when applicable, the rules set forth for an Employee shall be applicable to the aforementioned corporate officers. 

3. Stock Subject to the Plan: The total number of Options outstanding which may be exercised for newly issued Shares may at no
time exceed one-third of the Company’s voting stock, whether preferred stock of the Company or Common Stock. If any Optioned Stock is to consist of reacquired Shares, such Optioned Stock must be purchased by the Company, in the limit of 10% of
its share capital, prior to the date of grant of the corresponding new Option and must be reserved and set aside for such purposes. In addition, the new Option must be granted within one (1) year of the acquisition of the Shares underlying such
new Option. 
 4. Limitations Upon Granting of Options. 

(a) Declaration of Dividend; Capital Increase: To the extent applicable to the Company, Options cannot be granted during the 20
trading days from (i) the date the Common Stock is trading on an ex-dividend basis or (ii) a capital increase. 
 (b)
Non-Public Information: To the extent applicable to the Company, the Company shall not grant Options during the closed periods required under Section L 225-177 of the French Commercial Code. As a result, notwithstanding any other
provision of the Plan, Options cannot be granted: 

 (i) during the ten (10) trading days preceding and following the date on which the
consolidated accounts, or, if unavailable, the annual accounts, are made public; 
 (ii) during the period between the date on
which the Company’s governing bodies (i.e., the Board of Directors) become aware of information which, if made public, could have a material impact on the price of the Shares, and the date ten (10) trading days after such information is
made public. 
 (c) Right to Employment: Neither the Plan nor any Option shall confer upon any Optionee any right with
respect to continuing the Optionee’s employment relationship with the Company or any Subsidiary. 
 5. Exercise
Price. The exercise price for the Shares to be issued pursuant to exercise of an Option will be determined by the Board of Directors upon the date of grant of the Option but in no event will be lower than (i) in case of issued Shares, the
Fair Market Value on the date of grant or (ii) in case of reacquired Shares, the Fair Market Value on the date of grant for ISO and 85% of the fair Market Value on the date of grant for Nonstatutory Options. The exercise price cannot be
modified while the Option is outstanding, except as required by Applicable Laws. 
 6. Term of Option: The term of each
Option shall be as stated in the Stock Option Agreement provided, however, that the maximum term of an Option shall not exceed ten (10) years from the date of grant of the Option. 

7. Exercise of Option; Restriction on Sale: 
 (a) Options granted hereunder may be not be exercised within one (1) year of the date the Option is granted (the “Initial Exercise Date”) whether or not the Option has vested prior to such
time; provided, however, that the Initial Exercise Date will be automatically adjusted to conform with any changes under Applicable Laws so that the length of time from the date of grant to the Initial Exercise Date when added to the length of time
in which Shares may not be disposed of after the Initial Exercise Date as provided in Section 7(b) below, will allow for favorable tax and social security treatment under Applicable Laws. Thereafter, Options may be exercised to the extent they
have vested. Options granted hereunder will vest as the Board of Directors determines. 
 An Option will be deemed exercised when the Company
receives: (i) written or electronic notice of exercise (in accordance with the Stock Option Agreement) from the person entitled to exercise the Option, and (ii) full payment for the Shares with respect to which the Option is exercised
together with any applicable withholding taxes and social security contributions. Full payment may consist of any consideration and method of payment authorized by the Board of Directors and permitted by the Stock Option Agreement and the Plan to
the exclusion of any cashless exercise program. Until the Shares are issued (as evidenced by the appropriate entry in the books of the Company or of a duly authorized transfer agent of the Company), no right to vote or receive dividends or any other
rights as a stockholder will exist with respect to the Shares, notwithstanding the exercise of the Option. The Company will issue (or cause to be issued) such Shares promptly after the Option is

 
exercised. No adjustment will be made for a dividend or other right for which the record date is prior to the date the Shares are issued, except as provided in Section 8 of the Plan.

 (b) The Shares subject to an Option may not be transferred, assigned or hypothecated in any manner otherwise than by will or
by the laws of descent or distribution before three (3) years from the Initial Exercise Date, except for any events provided for in Article 91 ter of Annex II to the French tax code; provided, however, that the duration of this
restriction on sale will be automatically adjusted to conform with any changes to the holding period required for favorable tax and social security treatment under Applicable Laws to the extent permitted under Applicable Laws. 

(c) Termination of Employment Relationship: Upon Termination of an Optionee’s status as an Employee (other than
upon the Optionee’s death or Disability), the Optionee may exercise his or her Option within thirty (30) days of Termination, or such longer period of time as specified in the Stock Option Agreement, and only to the extent that the
Optionee was entitled to exercise it at the date of Termination (but in no event later than the expiration of the term of such Option as set forth in the Stock Option Agreement). 

(d) Disability of Optionee: Upon Termination of an Optionee’s status as an Employee as a result of the Optionee’s
Disability, the Optionee may exercise his or her Option at any time within six (6) months from the date of such Termination or such longer period of time as specified in the Stock Option Agreement, but only to the extent that the Optionee was
entitled to exercise it at the date of such Termination (but in no event later than the expiration of the term of such Option as set forth in the Stock Option Agreement). 
 (e) Death of Optionee: In the event of the death of an Optionee while an Employee, the Option may be exercised at any time within six (6) months following the date of death by the
Optionee’s estate or by a person who acquired the right to exercise the Option by bequest or inheritance, but only to the extent that the Optionee was entitled to exercise the Option at the date of death. 

(f) Option granted to corporate officers: In the event of Options granted pursuant to this Addendum to a corporate officer the
Stock Option Agreement shall determine (i) the portion of the Options the corporate officer will not be entitled to exercise before the end of his functions or, (ii) the portion of the shares the corporate officer will have to hold until
the end of his functions. 
 8. Non-Transferability of Options: An Option may not be sold, pledged, assigned,
hypothecated, transferred, or disposed of in any manner other than by will or by the laws of descent or distribution and may be exercised, during the lifetime of the Optionee, only by the Optionee. 

9. Changes in Capitalization: If any adjustment or substitution provided for in Section 8 of the Plan to the exercise price
and the number of shares of Common Stock covered by outstanding Options would violate Applicable Laws in such a way to jeopardize the favorable tax and social security treatment of this Plan together with this Addendum and the Options granted
thereunder, 

 
then no such adjustment nor substitution will be made prior to the exercise of any such outstanding Option. 
 10. Information Statements to Optionees: The Company or Subsidiary, as required under Applicable Laws, will provide each Optionee with copies to the appropriate governmental entities, such
statements of information as required by the Applicable Laws. 
 11. Reporting to the Shareholders’ Meeting: The
Subsidiary of the Company, if required under Applicable Laws, will provide its shareholders with an annual report with respect to Options granted and/or exercised by its Employees in the financial year.Forms of agreements under the 2003 Stock Plan, as amended

 Exhibit 10.2 
 IMPERVA INC. 
 2003 STOCK
PLAN 
 NOTICE OF STOCK OPTION
GRANT (INSTALLMENT) 
 You have been granted the following option to purchase shares of the
Common Stock of Imperva Inc. (the “Company”): 
  

			
	 Name of Optionee:
	  	
		
	 Total Number of Shares:
	  	
		
	 Type of Option:
	  	
		
	 Exercise Price Per Share:
	  	
		
	 Date of Grant:
	  	
		
	 Date Exercisable:
	  	This option may be exercised with respect to 25% of the Shares subject to this option when the Optionee completes 12 months of continuous Service after the Vesting Commencement
Date. This option may be exercised with respect to an additional 6.25% of the Shares subject to this option when the Optionee completes each 3-month period of continuous Service thereafter.
		
	 Vesting Commencement Date:
	  	
		
	 Expiration Date:
	  	This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

By your signature and the signature of the Company’s representative below, you and the Company agree that this option is granted under and governed
by the terms and conditions of the 2003 Stock Plan and the Stock Option Agreement, both of which are attached to and made a part of this document. 
  

					
	OPTIONEE:	    	IMPERVA INC.	    	
			
	  
	    	By:                     	    	
			
		    	Title:         	    	

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 IMPERVA INC. 

2003 STOCK PLAN: 
 STOCK OPTION AGREEMENT 
 SECTION 1. GRANT
OF OPTION. 
 (a) Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this
Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the Exercise Price the number of Shares set forth in the Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market
Value per Share on the Date of Grant (110% of Fair Market Value if Section 3(b) of the Plan applies). This option is intended to be an ISO, a Nonstatutory Option, or a Nonstatutory Option described in Section 13, as provided in the Notice
of Stock Option Grant. 
 (b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock
Option Grant, it shall be deemed to be an NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 
 (c) Stock Plan and Defined Terms. This option is granted pursuant to the Plan, a copy of which the Optionee acknowledges having received. The provisions of the Plan are incorporated into this
Agreement by this reference. Any interpretation of this Agreement will be made in accordance with the Plan, but in the event there is any contradiction between the provisions of this Agreement and the Plan, the provisions of the Plan will prevail.
Capitalized terms are defined in Section 13 of this Agreement. 
 SECTION 2. RIGHT TO EXERCISE. 

(a) Exercisability. Subject to Subsection (b) below and the other conditions set forth in this Agreement, all or part of this
option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. 
 (b)
Stockholder Approval. Any other provision of this Agreement notwithstanding, no portion of this option shall be exercisable at any time prior to the approval of the Plan by the Company’s stockholders. 

 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION. 

Except as otherwise provided in this Agreement, this option and the rights and privileges conferred hereby shall not be sold, pledged or
otherwise transferred (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy or similar process. 
 SECTION 4. EXERCISE PROCEDURES. 
 (a) Notice of Exercise. The
Optionee or the Optionee’s representative may exercise this option by giving written notice to the Company pursuant to Section 12(c). The notice shall specify the election to exercise this option, the number of Shares for which it is being
exercised and the form of payment. The person exercising this option shall sign the notice. In the event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by proof (satisfactory to the
Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under Section 5 for the full
amount of the Purchase Price. 
 (b) Issuance of Shares. After receiving a proper notice of exercise, the Company shall
cause to be issued one or more certificates evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such person and his or
her spouse as community property or as joint tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable trust. The Company shall cause such certificates to be delivered to or upon the order of
the person exercising this option. 
 (c) Withholding Taxes. In the event that the Company determines that it is required
to withhold any tax as a result of the exercise of this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall
also make arrangements satisfactory to the Company to enable it to satisfy any withholding requirements that may arise in connection with the disposition of Shares purchased by exercising this option. 

SECTION 5. PAYMENT FOR STOCK. 
 (a) Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 
 (b) Surrender of Stock. At the discretion of the Board of Directors, all or any part of the Purchase Price may be paid by surrendering, or attesting to the ownership of, Shares that are already
owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and shall be valued at their Fair Market Value on the date when this option is exercised. The Optionee shall not surrender, or attest to the ownership
of, Shares in payment of the Purchase Price if such action would cause the Company to recognize compensation expense (or additional compensation expense) with respect to this option for financial reporting purposes. 

  
 2 

 (c) Exercise/Sale. At the discretion of the Board of Directors, if Stock is publicly
traded, all or part of the Purchase Price and any withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or
part of the sales proceeds to the Company. 
 (d) Exercise/Pledge. At the discretion of the Board of Directors, if Stock
is publicly traded, all or part of the Purchase Price and any withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to pledge Shares to a securities broker or lender approved by the Company,
as security for a loan, and to deliver all or part of the loan proceeds to the Company. 
 SECTION 6. TERM AND EXPIRATION. 

(a) Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which
date is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). 

(b) Termination of Service (Except by Death). If the Optionee’s Service terminates for any reason other than death, then this
option shall expire on the earliest of the following occasions: 
 (i) The expiration date determined pursuant to
Subsection (f) above; 
 (ii) The date 3 months after the termination of the Optionee’s Service for any
reason other than Disability, or such later date as the Board of Directors may determine; or 
 (iii) The date 6
months after the termination of the Optionee’s Service by reason of Disability, or such other date as the Board of Directors may determine (but not less than six months after the termination of the Optionee’s Service by reason of
Disability). 
 The Optionee may exercise all or part of this option at any time before its expiration under the preceding sentence, but only to
the extent that this option had become exercisable before the Optionee’s Service terminated. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which this option is not yet
exercisable. In the event that the Optionee dies after termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the executors or administrators of the Optionee’s
estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s Service terminated.

 (c) Death of the Optionee. If the Optionee dies while in Service, then this option shall expire on the earlier of the
following dates: 

  
 3 

 (i) The expiration date determined pursuant to Subsection (a) above; or

 (ii) The date 12 months after the Optionee’s death. 

All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators of the
Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s death. When
the Optionee dies, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable. 
 (d) Leaves of Absence. For any purpose under this Agreement, Service shall be deemed to continue while the Optionee is on a bona fide leave of absence, if such leave was approved by the
Company in writing and if continued crediting of Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). 
 (e) Notice Concerning ISO Treatment. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it ceases to qualify for favorable tax treatment as an ISO to the extent that
it is exercised: 
 (i) More than three months after the date when the Optionee ceases to be an Employee for any
reason other than death or permanent and total disability (as defined in Section 22(e)(3) of the Code); 

(ii) More than 12 months after the date when the Optionee ceases to be an Employee by reason of permanent and total
disability (as defined in Section 22(e)(3) of the Code); or 
 (iii) More than three months after the date
when the Optionee has been on a leave of absence for 90 days, unless the Optionee’s reemployment rights following such leave were guaranteed by statute or by contract. 
 SECTION 7. RIGHT OF FIRST REFUSAL. 
 (a) Right of First Refusal. In
the event that the Optionee proposes to sell, pledge or otherwise transfer to a third party any Shares acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all or any
portion of such Shares. If the Optionee desires to transfer Shares acquired under this Agreement, the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be
transferred, the proposed transfer price, the name and address of the proposed Transferee and proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal or state securities laws. The Transfer Notice
shall be signed both by the Optionee and by the proposed Transferee and must constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all or any portion of the Shares on the terms of
the proposal described in the Transfer Notice (subject, however, to any change in such 

  
 4 

 
terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First Refusal within 30 days after the date when the Transfer Notice was received by the
Company. 
 (b) Transfer of Shares. If the Company fails to exercise its Right of First Refusal within 30 days after
the date when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice on the terms and conditions
described in the Transfer Notice, provided that any such sale is made in compliance with applicable federal and state securities laws and not in violation of any other contractual restrictions to which the Optionee is bound. Any proposed transfer on
terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of First Refusal and shall require compliance with the procedure described
in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days after the date when the Company received the
Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be made in a form other than cash or cash
equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer Notice. 

(c) Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company with or into another
entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a recapitalization or a
similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents that are paid other than as an ordinary cash dividends) that are by reason of such transaction exchanged
for, or distributed with respect to, any Shares subject to this Section 7 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made
to the number and/or class of the Shares subject to this Section 7. 
 (d) Termination of Right of First Refusal.
Any other provision of this Section 7 notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of First Refusal, and the
Optionee shall have no obligation to comply with the procedures prescribed by Subsections (a) and (b) above. 
 (e)
Permitted Transfers. This Section 7 shall not apply to (i) a transfer by beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of the Optionee’s Immediate Family or to a trust
established by the Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all
provisions of this Agreement. If the Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or after the Company has failed to exercise the Right 

  
 5 

 
of First Refusal, then this Agreement shall apply to the Transferee to the same extent as to the Optionee. 
 (f) Termination of Rights as Stockholder. If the Company makes available, at the time and place and in the amount and form provided in this Agreement, the consideration for the Shares to be
purchased in accordance with this Section 7, then after such time the person from whom such Shares are to be purchased shall no longer have any rights as a holder of such Shares (other than the right to receive payment of such consideration in
accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the applicable provisions hereof, whether or not the certificate(s) therefor have been delivered as required by this Agreement. 

(g) Assignment of Right of First Refusal. The Company may freely assign the Company’s Right of First Refusal, in whole or in
part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and obligations under this Section 7. 
 SECTION 8. LEGALITY OF INITIAL ISSUANCE. 
 No Shares shall be issued upon
the exercise of this option unless and until the Company has determined that: 
 (a) It and the Optionee have
taken any actions required to register the Shares under the Securities Act or to perfect an exemption from the registration requirements thereof; 
 (b) Any applicable listing requirement of any stock exchange or other securities market on which Stock is listed has been satisfied; 

(c) Any other applicable provision of federal, state or foreign law has been satisfied; and 

(d) The Purchase Price has been received by the Company. 
 SECTION 9. NO REGISTRATION RIGHTS. 
 The Company may, but shall not be
obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law. The Company shall not be obligated to take any affirmative action in order to cause the sale of Shares under this Agreement to comply with any
law. 
 SECTION 10. RESTRICTIONS ON TRANSFER. 
 (a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been registered under the Securities Act or have been registered or qualified under the
securities laws of any state, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of appropriate legends on stock certificates or the imposition of stop-transfer
instructions) if, in the 

  
 6 

 
judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act, the securities laws of any state or any other law. 

(b) Market Stand-Off. In connection with any underwritten public offering by the Company of its equity securities pursuant to an
effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short sale of, loan, hypothecate, pledge, offer,
grant or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing transactions with respect to, any Shares acquired
under this Agreement without the prior written consent of the Company or its underwriters. Such restriction (the “Market Stand-Off”) shall be in effect for such period of time following the date of the final prospectus for the offering as
may be requested by the Company or such underwriters. In no event, however, shall such period exceed 180 days. The Market Stand-Off shall in any event terminate two years after the date of the Company’s initial public offering. In the event of
the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities without receipt of consideration, any new, substituted
or additional securities which are by reason of such transaction distributed with respect to any Shares subject to the Market Stand-Off, or into which such Shares thereby become convertible, shall immediately be subject to the Market Stand-Off. In
order to enforce the Market Stand-Off, the Company may impose stop-transfer instructions with respect to the Shares acquired under this Agreement until the end of the applicable stand-off period. The Company’s underwriters shall be
beneficiaries of the agreement set forth in this Subsection (b). This Subsection (b) shall not apply to Shares registered in the public offering under the Securities Act, and the Optionee or a Transferee shall be subject to this
Subsection (b) only if the directors and officers of the Company are subject to similar arrangements. 
 (c) Investment
Intent at Grant. The Optionee represents and agrees that the Shares to be acquired upon exercising this option will be acquired for investment, and not with a view to the sale or distribution thereof. 

(d) Investment Intent at Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act
but an exemption is available which requires an investment representation or other representation, the Optionee shall represent and agree at the time of exercise that the Shares being acquired upon exercising this option are being acquired for
investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are deemed necessary or appropriate by the Company and its counsel. 

(e) Legends. All certificates evidencing Shares purchased under this Agreement shall bear the following legend: 

“THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE
WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY 

  
 7 

 
CERTAIN RIGHTS OF FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE SHARES. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT
CHARGE.” 
 All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following
legend (and such other restrictive legends as are required or deemed advisable under the provisions of any applicable law): 

“THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED,
OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.” 

(f) Removal of Legends. If, in the opinion of the Company and its counsel, any legend placed on a stock certificate representing
Shares sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but without such legend. 

(g) Administration. Any determination by the Company and its counsel in connection with any of the matters set forth in this
Section 10 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION 11. ADJUSTMENT OF SHARES. 

In the event of any transaction described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the
number and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the
agreement of merger or consolidation, as provided in Section 8(b) of the Plan. 
 SECTION 12. MISCELLANEOUS PROVISIONS. 

(a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder
with respect to any Shares subject to this option until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5.

 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the Optionee any right to continue in
Service for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which rights are hereby expressly reserved
by each, to terminate his or her Service at any time and for any reason, with or without cause. 

  
 8 

 (c) Notice. Any notice required by the terms of this Agreement shall be given in
writing. It shall be deemed effective upon (i) personal delivery, (ii) deposit with the United States Postal Service, by registered or certified mail, with postage and fees prepaid or (iii) deposit with Federal Express Corporation,
with shipping charges prepaid. Notice shall be addressed to the Company at its principal executive office and to the Optionee at the address that he or she most recently provided to the Company in accordance with this Subsection (c).

 (d) Entire Agreement. The Notice of Stock Option Grant, this Agreement and the Plan constitute the entire contract
between the parties hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether express or implied) which relate to the subject matter hereof.

 (e) Choice of Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of
Delaware, as such laws are applied to contracts entered into and performed in such State. 
 SECTION 13. DEFINITIONS. 

(a) “Agreement” shall mean this Stock Option Agreement. 

(b) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a
Committee has been appointed, such Committee. 
 (c) “Code” shall mean the Internal Revenue Code of 1986, as
amended. 
 (d) “Committee” shall mean a committee of the Board of Directors, as described in Section 2 of
the Plan. 
 (e) “Company” shall mean Imperva Inc., a Delaware corporation. 

(f) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a
consultant or advisor, excluding Employees and Outside Directors. 
 (g) “Date of Grant” shall mean the date
specified in the Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day of the Optionee’s Service. 

(h) “Disability” shall mean that the Optionee is unable to engage in any substantial gainful activity by reason of any
medically determinable physical or mental impairment which has lasted, or can expected to last, for a continuous period of not less than 12 months, at the Company’s or the Subsidiary’s, as applicable, discretion. 

(i) “Employee” shall mean any individual who is a common-law employee of the Company, a Parent or a Subsidiary. An
individual shall not cease to be an “Employee” upon the transfer of such individual’s employment among the Company and its Subsidiaries. 

  
 9 

 (j) “Exercise Price” shall mean the amount for which one Share may be
purchased upon exercise of this option, as specified in the Notice of Stock Option Grant. 
 (k) “Fair Market
Value” shall mean the fair market value of a Share, as determined by the Board of Directors in good faith. Such determination shall be conclusive and binding on all persons. 

(l) “Immediate Family” shall mean any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling,
mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law and shall include adoptive relationships. 
 (m) “ISO” shall mean an employee incentive stock option described in Section 422(b) of the Code. 
 (n) “Notice of Stock Option Grant” shall mean the document so entitled to which this Agreement is attached. 
 (o) “NSO” shall mean a stock option not described in Sections 422(b) or 423(b) of the Code (including a stock option described in Section 13). 

(p) “Optionee” shall mean the person named in the Notice of Stock Option Grant. 

(q) “Outside Director” shall mean a member of the Board of Directors who is not an Employee. 

(r) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of corporations ending with the
Company, if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(s) “Plan” shall mean the Imperva Inc. 2003 Stock Plan, as in effect on the Date of Grant. 

(t) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares with respect to which this option
is being exercised. 
 (u) “Right of First Refusal” shall mean the Company’s right of first refusal
described in Section 7. 
 (v) “Securities Act” shall mean the Securities Act of 1933, as amended.

 (w) “Service” shall mean service as an Employee, Outside Director or Consultant. 

(x) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the Plan (if applicable).

  
 10 

 (y) “Stock” shall mean the Common Stock of the Company, with a par value of
$0.0001 per Share. 
 (z) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain
of corporations beginning with the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other
corporations in such chain. 
 (aa) “Transferee” shall mean any person to whom the Optionee has directly or
indirectly transferred any Share acquired under this Agreement. 
 (bb) “Transfer Notice” shall mean the notice
of a proposed transfer of Shares described in Section 7. 

  
 11 

 IMPERVA INC. 2003 STOCK PLAN

 NOTICE OF STOCK OPTION EXERCISE

 You must sign this Notice on Page 3 before submitting it to the Company. 

OPTIONEE INFORMATION: 
  

									
	Name:	 	  
	 		  	Social Security Number:	  	  

					
	Address:	 	  
	 		  	Employee Number:	  	  

					
		 	  
	 		  		  	

 OPTION INFORMATION: 

 

			
	Date of Grant:                  , 200    	  	Type of Stock Option:
		
	Exercise Price per Share: $        	  	 ̈ Nonstatutory (NSO)
		
	Total number of shares of Common Stock of Imperva Inc. (the “Company”) covered by
option:                     	  	 ̈ Incentive (ISO)

 EXERCISE INFORMATION: 
 Number of shares of Common Stock of
the Company for which option is being exercised now:                     . (These shares are referred to below as the “Purchased
Shares.”) 
 Total Exercise Price for the Purchased Shares: $         

Form of payment enclosed [check all that apply]: 
  

	 ̈	Check for $        , payable to “Imperva Inc.” 

 

	 ̈	Certificate(s) for                      shares of Common
Stock of the Company that I have owned for at least six months. (These shares will be valued as of the date this notice is received by the Company.) 

  

	 ̈	Attestation Form covering                      shares of
Common Stock of the Company. (These shares will be valued as of the date this notice is received by the Company.) 

 Name(s) in
which the Purchased Shares should be registered [please review the attached explanation of the available forms of ownership, and then check one box]: 

							
	 ̈	  	In my name only	  		  	
				
	 ̈	  	In the names of my spouse and myself as community property	  		  	My spouse’s name (if applicable):
				
	 ̈	  	In the names of my spouse and myself as joint tenants with the right of survivorship	  		  	  

		  	  		  	
				
	 ̈	  	 In the name of an eligible revocable trust 
 [requires Stock Transfer Agreement]
	  		  	Full legal name of revocable trust:
		  	  		  	  

		  	  		  	  

				
		  		  		  	  

		  	 The certificate for the Purchased Shares should be sent to the following address:

 
	  		  	
		  	  	  

	  	  	  
  

		  		  	  
  

REPRESENTATIONS AND ACKNOWLEDGMENTS OF THE OPTIONEE:

  

	1.	I represent and warrant to the Company that I am acquiring and will hold the Purchased Shares for investment for my account only, and not with a view to, or for resale
in connection with, any “distribution” of the Purchased Shares within the meaning of the Securities Act of 1933, as amended (the “Securities Act”). 

 

	2.	I understand that the Purchased Shares have not been registered under the Securities Act by reason of a specific exemption therefrom and that the Purchased Shares must
be held indefinitely, unless they are subsequently registered under the Securities Act or I obtain an opinion of counsel (in form and substance satisfactory to the Company and its counsel) that registration is not required. 

 

	3.	I acknowledge that the Company is under no obligation to register the Purchased Shares. 

 

	4.	I am aware of the adoption of Rule 144 by the Securities and Exchange Commission under the Securities Act, which permits limited public resales of securities acquired
in a non-public offering, subject to the satisfaction of certain conditions. These conditions include (without limitation) that certain current public information about the issuer is available, that the resale occurs only after the holding period
required by Rule 144 has been satisfied, that the sale occurs through an unsolicited “broker’s transaction” and that the amount of securities being sold during any three-month period does not exceed specified limitations. I
understand that the conditions for resale set forth in Rule 144 have not been satisfied and that the Company has no plans to satisfy these conditions in the foreseeable future. 

 

	5.	I will not sell, transfer or otherwise dispose of the Purchased Shares in violation of the Securities Act, the Securities Exchange Act of 1934, or the rules promulgated
thereunder, including Rule 144 under the Securities Act. 

  

	6.	I acknowledge that I have received and had access to such information as I consider necessary or appropriate for deciding whether to invest in the Purchased Shares and
that I had an opportunity to ask questions and receive answers from the Company regarding the terms and conditions of the issuance of the Purchased Shares. 

  
 2 

	7.	I am aware that my investment in the Company is a speculative investment that has limited liquidity and is subject to the risk of complete loss. I am able, without
impairing my financial condition, to hold the Purchased Shares for an indefinite period and to suffer a complete loss of my investment in the Purchased Shares. 

 

	8.	I acknowledge that the Purchased Shares remain subject to the Company’s right of first refusal and the market stand-off (sometimes referred to as the
“lock-up”), all in accordance with the applicable Notice of Stock Option Grant and Stock Option Agreement. 

  

	9.	I acknowledge that I am acquiring the Purchased Shares subject to all other terms of the Notice of Stock Option Grant and Stock Option Agreement.

  

	10.	I acknowledge that I have received a copy of the Company’s explanation of the forms of ownership available for my Purchased Shares. I acknowledge that the Company
has encouraged me to consult my own adviser to determine the form of ownership that is appropriate for me. In the event that I choose to transfer my Purchased Shares to a trust, I agree to sign a Stock Transfer Agreement. In the event that I choose
to transfer my Purchased Shares to a trust that does not satisfy the requirements described in the attached explanation (i.e., a trust that is not an eligible revocable trust), I also acknowledge that the transfer will be treated as a
“disposition” for tax purposes. As a result, the favorable ISO tax treatment will be unavailable and other unfavorable tax consequences may occur. 

 

	11.	I acknowledge that I have received a copy of the Company’s explanation of the federal income tax consequences of an option exercise. I acknowledge that the Company
has encouraged me to consult my own adviser to determine the tax consequences of acquiring the Purchased Shares at this time. 

  

	12.	I agree to seek the consent of my spouse to the extent required by the Company to enforce the foregoing. 

 

							
	SIGNATURE:	 		  	DATE:	  	
				
	  
	 		  	                            
            	  	

  
 3 

 STOCK TRANSFER AGREEMENT 

THIS STOCK TRANSFER AGREEMENT is entered into as of
            ,     , by IMPERVA, INC., a Delaware corporation (the “Company”),
                     (the “Transferor”) and
                     (the “Transferee”). 
 RECITALS: 
 A. The Transferor is record owner of certain
shares of the Common Stock of the Company and desires to transfer                      shares (the “Shares”) of the Company’s
Common Stock to the Transferee. 
 B. The Transferee desires to acquire all of the Transferor’s right, title and interest
to the Shares. 
 AGREEMENT: 
 1. The Transferor represents that the Transferor has good title to the Shares. Each of Transferor and Transferee represents that (a) they have all necessary power and authority to enter into and
perform this Agreement and (b) this Agreement constitutes their valid and binding obligation. 
 2. The Transferor hereby
transfers and assigns to the Transferee all of the Transferor’s right, title and interest to the Shares for no consideration. 
 3. The Transferee acknowledges that the Transferor purchased the Shares pursuant to a Stock Option Agreement between the Company and the Transferor dated as of June 4, 2010, as it may have been
amended (the “Stock Option Agreement”). The Transferee agrees to be bound by all of the terms and provisions of the Stock Option Agreement, as if the Transferee were a party thereto. Without limiting the foregoing, the Shares shall be
subject to (a) the Company’s right of repurchase under Section 7 of the Stock Option Agreement, (b) the Company’s right of first refusal under Section 8 of the Stock Option Agreement and (c) the market stand-off
provisions of Section 11(b) of the Stock Option Agreement. 
 4. The Transferor and the Transferee each represent that that
the Transferee either (a) is a member of the Transferor’s immediate family or (b) is a trust established by the Transferor for the benefit of the Transferor and/or one or more members of the Transferor’s immediate family, and
that the transfer of the Shares from the Transferor to the Transferee is expressly permitted by Section 7(e) of the Stock Option Agreement. In reliance on the foregoing representation, the Company acknowledges that its right of first refusal
under Section 7 of the Stock Option Agreement does not apply to the transfer of the Shares from the Transferor to the Transferee. However, the Company’s right of first refusal under Section 7 of the Stock Option Agreement will apply
to the Shares in the hands of the Transferee. 

 5. The Transferee represents that the Transferee is acquiring the Shares for investment for
an indefinite period for the Transferee’s own account, not as a nominee or agent and not with a view to the sale or distribution of any part thereof, and the Transferee has no present intention of selling, granting participation in or otherwise
distributing the same. The Transferee further represents that the Transferee does not have any contract, undertaking, agreement or arrangement with any person to sell, transfer or grant participation to such person or other third person with respect
to any of the Shares. 
 6. The Transferee understands that the Shares are subject to the federal securities laws and applicable
regulations and that the Shares may be resold without registration under the Securities Act of 1933, as amended (the “Act”), only in certain limited circumstances. In this connection, the Transferee represents that the Transferee
(a) is familiar with Securities and Exchange Commission Rule 144 as presently in effect, (b) understands the resale limitations imposed by Rule 144 and by the Act and (c) understands that the Company has no obligation, and
no current plans, to satisfy the current-information requirements of Rule 144. 
 7. If the Transferee is not a United
States person, the Transferee represents that the Transferee is satisfied as to the full observance of the laws of the Transferee’s jurisdiction in connection with any invitation to acquire the Shares, including (a) the legal requirements
within the Transferee’s jurisdiction for the purchase of the Shares, (b) any foreign exchange restrictions applicable to such purchase, (c) any governmental or other consents that may need to be obtained and (d) the income tax
and other tax consequences, if any, that may be relevant to the purchase, holding, redemption, sale or transfer of the Shares. The Transferee further represents that the Transferee’s acquisition and continued beneficial ownership of the Shares
will not violate any applicable securities or other laws of the Transferee’s jurisdiction. 
 8. The Transferee authorizes
the Company to issue stop-transfer instructions to its stock transfer agent or, as long as it acts as its own transfer agent, to make a stop-transfer notation in its appropriate records whenever necessary or appropriate to ensure that the Transferee
complies with this Agreement and, to the extent applicable, the Stock Option Agreement. The Transferee acknowledges that the Company is a third-party beneficiary of this Agreement and may take all actions that are necessary and appropriate to
enforce this Agreement and, to the extent applicable, the Stock Option Agreement. 
 9. The parties agree to execute such
further instruments and to take such further action as may reasonably be necessary to carry out the intent of this Agreement and the Stock Option Agreement. 
 10. This Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware, as such laws are applied to contracts entered into and performed in such State. 

11. This Agreement shall be binding upon the transferees, successors, assigns and legal representatives of the parties hereto.

 12. This Agreement may be executed in counterparts with the same force and effect as if each of the signatories had executed
the same instrument. 

  
 2 

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

			
	IMPERVA, INC.
		
	By:	 	  

		
	Title:	 	  

	
	TRANSFEROR:
	
	  

	
	TRANSFEREE:
	
	  

  
 3 

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 IMPERVA, INC. 2003 STOCK
PLAN: 
 STOCK OPTION AGREEMENT (INTERNATIONAL)

 SECTION 1. GRANT OF OPTION. 
 (a) Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the
Exercise Price the number of Shares set forth in the Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market Value per Share on the Date of Grant (110% of Fair Market Value if this option is designated as an
ISO in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). This option is intended to be an ISO or an NSO, as provided in the Notice of Stock Option Grant. 

(b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it shall be deemed to be
an NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 

(c) Stock Plan and Defined Terms. This option is granted pursuant to the Plan, a copy of which the Optionee acknowledges having
received. The provisions of the Plan are incorporated into this Agreement by this reference. Capitalized terms are defined in Section 14 of this Agreement. 
 SECTION 2. RIGHT TO EXERCISE. 
 (a) Exercisability. Subject to
Subsection (b) below and the other conditions set forth in this Agreement, all or part of this option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. 

(b) Stockholder Approval. Any other provision of this Agreement notwithstanding, no portion of this option shall be exercisable at
any time prior to the approval of the Plan by the Company’s stockholders. 
 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION.

 Except as otherwise provided in this Agreement, this option and the rights and privileges conferred hereby shall not be
sold, pledged or otherwise transferred (whether by 

 
operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy or similar process. 
 SECTION 4. EXERCISE PROCEDURES. 
 (a) Notice of Exercise. The
Optionee or the Optionee’s representative may exercise this option by giving written notice to the Company pursuant to Section 12(c). The notice shall specify the election to exercise this option, the number of Shares for which it is being
exercised and the form of payment. The person exercising this option shall sign the notice. In the event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by proof (satisfactory to the
Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under Section 5 for the full
amount of the Purchase Price. 
 (b) Issuance of Shares. After receiving a proper notice of exercise, the Company shall
cause to be issued one or more certificates evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such person and his or
her spouse as community property or as joint tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable trust. The Company shall cause such certificates to be delivered to or upon the order of
the person exercising this option. 
 (c) Withholding Taxes. In the event that the Company determines that it is required
to withhold any tax as a result of the exercise of this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall
also make arrangements satisfactory to the Company to enable it to satisfy any withholding requirements that may arise in connection with the disposition of Shares purchased by exercising this option. 

SECTION 5. PAYMENT FOR STOCK. 
 (a) Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 
 (b) Surrender of Stock. At the discretion of the Board of Directors, all or any part of the Purchase Price may be paid by surrendering, or attesting to the ownership of, Shares that are already
owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and shall be valued at their Fair Market Value as of the date when this option is exercised. 

(c) Exercise/Sale. All or part of the Purchase Price and any withholding taxes may be paid by the delivery (on a form prescribed
by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to the Company. However, payment pursuant to this Subsection (c) shall be permitted only
if (i) Stock then is publicly traded and (ii) such payment does not violate applicable law. 

  
 2 

 SECTION 6. TERM AND EXPIRATION. 

(a) Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which
date is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). 

(b) Termination of Service (Except by Death). If the Optionee’s Service terminates for any reason other than death, then this
option shall expire on the earliest of the following occasions: 
 (i) The expiration date determined pursuant to
Subsection (a) above; 
 (ii) The date three months after the termination of the Optionee’s Service for
any reason other than Disability; or 
 (iii) The date 12 months after the termination of the Optionee’s
Service by reason of Disability. 
 The Optionee may exercise all or part of this option at any time before its expiration under the preceding
sentence, but only to the extent that this option had become exercisable before the Optionee’s Service terminated. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which
this option is not yet exercisable. In the event that the Optionee dies after termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the executors or administrators of
the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s Service
terminated. 
 (c) Death of the Optionee. If the Optionee dies while in Service, then this option shall expire on the
earlier of the following dates: 
 (i) The expiration date determined pursuant to Subsection (a) above; or

 (ii) The date 12 months after the Optionee’s death. 

All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators of the
Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s death. When
the Optionee dies, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable. 
 (d) Part-Time Employment and Leaves of Absence. If the Optionee commences working on a part-time basis, then the Company may adjust the vesting schedule set forth in the Notice of Stock Option
Grant in accordance with the Company’s part-time work 

  
 3 

 
policy or the terms of an agreement between the Optionee and the Company pertaining to his or her part-time schedule. If the Optionee goes on a leave of absence, then the Company may adjust the
vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s leave of absence policy or the terms of such leave. Except as provided in the preceding sentence, Service shall be deemed to continue for any
purpose under this Agreement while the Optionee is on a bona fide leave of absence, if (i) such leave was approved by the Company in writing and (ii) continued crediting of Service for such purpose is expressly required by the terms
of such leave or by applicable law (as determined by the Company). Service shall be deemed to terminate when such leave ends, unless the Optionee immediately returns to active work. 

(e) Notice Concerning ISO Treatment. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it ceases to
qualify for favorable tax treatment as an ISO to the extent that it is exercised: 
 (i) More than three months
after the date when the Optionee ceases to be an Employee for any reason other than death or Disability; 
 (ii)
More than 12 months after the date when the Optionee ceases to be an Employee by reason of Disability; or 

(iii) More than three months after the date when the Optionee has been on a leave of absence for 90 days, unless the
Optionee’s reemployment rights following such leave were guaranteed by statute or by contract. 
 SECTION 7. RIGHT OF FIRST REFUSAL.

 (a) Right of First Refusal. In the event that the Optionee proposes to sell, pledge or otherwise transfer to a
third party any Shares acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all (and not less than all) of such Shares. If the Optionee desires to transfer Shares acquired
under this Agreement, the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be transferred, the proposed transfer price, the name and address of the
proposed Transferee and proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal, State or foreign securities laws. The Transfer Notice shall be signed both by the Optionee and by the proposed
Transferee and must constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all, and not less than all, of the Shares on the terms of the proposal described in the Transfer Notice
(subject, however, to any change in such terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First Refusal within 30 days after the date when the Transfer Notice was received by the Company.

 (b) Transfer of Shares. If the Company fails to exercise its Right of First Refusal within 30 days after the date
when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice on the terms and conditions described in
the Transfer 

  
 4 

 
Notice, provided that any such sale is made in compliance with applicable federal, State and foreign securities laws and not in violation of any other contractual restrictions to which the
Optionee is bound. Any proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of First Refusal and shall
require compliance with the procedure described in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days
after the date when the Company received the Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be
made in a form other than cash or cash equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer
Notice. 
 (c) Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company
with or into another entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a
recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents) that are by reason of such transaction exchanged for, or distributed with respect
to, any Shares subject to this Section 7 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made to the number and/or class of the
Shares subject to this Section 7. 
 (d) Termination of Right of First Refusal. Any other provision of this
Section 7 notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of First Refusal, and the Optionee shall have no
obligation to comply with the procedures prescribed by Subsections (a) and (b) above. 
 (e) Permitted
Transfers. This Section 7 shall not apply to (i) a transfer by beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of the Optionee’s Immediate Family or to a trust established by
the Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this
Agreement. If the Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or after the Company has failed to exercise the Right of First Refusal, then this Agreement shall apply to the Transferee to the
same extent as to the Optionee. 
 (f) Termination of Rights as Stockholder. If the Company makes available, at the time
and place and in the amount and form provided in this Agreement, the consideration for the Shares to be purchased in accordance with this Section 7, then after such time the person from whom such Shares are to be purchased shall no longer have
any rights as a holder of such Shares (other than the right to receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the

  
 5 

 
applicable provisions hereof, whether or not the certificate(s) therefor have been delivered as required by this Agreement. 

(g) Assignment of Right of First Refusal. The Board of Directors may freely assign the Company’s Right of First Refusal, in
whole or in part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and obligations under this Section 7. 
 SECTION 8. LEGALITY OF INITIAL ISSUANCE. 
 No Shares shall be issued upon
the exercise of this option unless and until the Company has determined that: 
 (a) It and the Optionee have
taken any actions required to register the Shares under the Securities Act or to perfect an exemption from the registration requirements thereof; 
 (b) Any applicable listing requirement of any stock exchange or other securities market on which Stock is listed has been satisfied; and 

(c) Any other applicable provision of federal, State or foreign law has been satisfied. 

SECTION 9. NO REGISTRATION RIGHTS. 
 The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law. The Company shall not be obligated to take any affirmative
action in order to cause the sale of Shares under this Agreement to comply with any law. 
 SECTION 10. RESTRICTIONS ON TRANSFER OF SHARES.

 (a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been
registered under the Securities Act or have been registered or qualified under the securities laws of any State, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of
appropriate legends on stock certificates or the imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act, the securities laws
of any State or any other law. 
 (b) Market Stand-Off. In connection with any underwritten public offering by the
Company of its equity securities pursuant to an effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short
sale of, loan, hypothecate, pledge, offer, grant or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing
transactions with respect to, any Shares acquired under this Agreement without the prior written consent of the Company or its managing underwriter. Such restriction (the “Market Stand-Off”)

  
 6 

 
shall be in effect for such period of time following the date of the final prospectus for the offering as may be requested by the Company or such underwriter. In no event, however, shall such
period exceed 180 days plus such additional period as may reasonably be requested by the Company or such underwriter to accommodate regulatory restrictions on (i) the publication or other distribution of research reports or (ii) analyst
recommendations and opinions, including (without limitation) the restrictions set forth in Rule 2711(f)(4) of the National Association of Securities Dealers and Rule 472(f)(4) of the New York Stock Exchange, as amended, or any similar
successor rules. The Market Stand-Off shall in any event terminate two years after the date of the Company’s initial public offering. In the event of the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion
ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities without receipt of consideration, any new, substituted or additional securities which are by reason of such transaction distributed with respect
to any Shares subject to the Market Stand-Off, or into which such Shares thereby become convertible, shall immediately be subject to the Market Stand-Off. In order to enforce the Market Stand-Off, the Company may impose stop-transfer instructions
with respect to the Shares acquired under this Agreement until the end of the applicable stand-off period. The Company’s underwriters shall be beneficiaries of the agreement set forth in this Subsection (b). This Subsection (b) shall
not apply to Shares registered in the public offering under the Securities Act. 
 (c) Investment Intent at Grant. The
Optionee represents and agrees that the Shares to be acquired upon exercising this option will be acquired for investment, and not with a view to the sale or distribution thereof. 

(d) Investment Intent at Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act
but an exemption is available that requires an investment representation or other representation, the Optionee shall represent and agree at the time of exercise that the Shares being acquired upon exercising this option are being acquired for
investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are deemed necessary or appropriate by the Company and its counsel. 

(e) Legends. All certificates evidencing Shares purchased under this Agreement shall bear the following legend: 

“THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE
WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE
SHARES. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.” 

All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following legend (and such other
restrictive legends as are required or deemed advisable under the provisions of any applicable law): 

  
 7 

 “THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF
1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.”

 (f) Removal of Legends. If, in the opinion of the Company and its counsel, any legend placed on a stock certificate
representing Shares sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but without such legend. 

(g) Administration. Any determination by the Company and its counsel in connection with any of the matters set forth in this
Section 10 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION 11. ADJUSTMENT OF SHARES. 

In the event of any transaction described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the
number and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the
agreement of merger or consolidation, as provided in Section 8(b) of the Plan. 
 SECTION 12. MISCELLANEOUS PROVISIONS. 

(a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder
with respect to any Shares subject to this option until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5.

 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the Optionee any right to continue in
Service for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which rights are hereby expressly reserved
by each, to terminate his or her Service at any time and for any reason, with or without cause. 
 (c) Notice. Any notice
required by the terms of this Agreement shall be given in writing. It shall be deemed effective upon (i) personal delivery, (ii) deposit with the United States Postal Service, by registered or certified mail, with postage and fees prepaid
or (iii) deposit with Federal Express Corporation, with shipping charges prepaid. Notice shall be addressed to the Company at its principal executive office and to the Optionee at the address that he or she most recently provided to the Company
in accordance with this Subsection (c). 
 (d) Entire Agreement. The Notice of Stock Option Grant, this Agreement
and the Plan constitute the entire contract between the parties hereto with regard to the subject 

  
 8 

 
matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether express or implied) that relate to the subject matter hereof.

 (e) Choice of Law. This Agreement shall be governed by, and construed in accordance with, the laws of the State of
Delaware, as such laws are applied to contracts entered into and performed in such State. 
 (f) Plan Discretionary. The
Optionee understands and acknowledges that (i) the Plan is entirely discretionary, (ii) the Company and the Optionee’s employer have reserved the right to amend, suspend or terminate the Plan at any time, (iii) the grant of an
option does not in any way create any contractual or other right to receive additional grants of options (or benefits in lieu of options) at any time or in any amount and (iv) all determinations with respect to any additional grants, including
(without limitation) the times when options will be granted, the number of Shares offered, the Exercise Price and the vesting schedule, will be at the sole discretion of the Company. 

(g) Extraordinary Compensation. The value of this option shall be an extraordinary item of compensation outside the scope of the
Optionee’s employment contract, if any, and shall not be considered a part of his or her normal or expected compensation for purposes of calculating severance, resignation, redundancy or end-of-service payments, bonuses, long-service awards,
pension or retirement benefits or similar payments. 
 (h) Termination of Service. The Optionee understands and
acknowledges that participation in the Plan ceases upon termination of his or her Service for any reason, except as may explicitly be provided otherwise in the Plan or this Agreement. 

(i) Authorization to Disclose. The Optionee hereby authorizes and directs the Optionee’s employer to disclose to the Company
or any Subsidiary any information regarding the Optionee’s employment, the nature and amount of the Optionee’s compensation and the fact and conditions of the Optionee’s participation in the Plan, as the Optionee’s employer deems
necessary or appropriate to facilitate the administration of the Plan. 
 (j) Personal Data Authorization. The Optionee
consents to the collection, use and transfer of personal data as described in this Subsection (j). The Optionee understands and acknowledges that the Company, the Optionee’s employer and the Company’s other Subsidiaries hold certain
personal information regarding the Optionee for the purpose of managing and administering the Plan, including (without limitation) the Optionee’s name, home address, telephone number, date of birth, social insurance number, salary, nationality,
job title, any Shares or directorships held in the Company and details of all options or any other entitlements to Shares awarded, canceled, exercised, vested, unvested or outstanding in the Optionee’s favor (the “Data”). The Optionee
further understands and acknowledges that the Company and/or its Subsidiaries will transfer Data among themselves as necessary for the purpose of implementation, administration and management of the Optionee’s participation in the Plan and that
the Company and/or any Subsidiary may each further transfer Data to any third party assisting the Company in the implementation, administration and management of the Plan. The Optionee understands and acknowledges that the recipients of Data may be
located in the United States or elsewhere. The Optionee authorizes such recipients to receive, possess, use, 

  
 9 

 
retain and transfer Data, in electronic or other form, for the purpose of administering the Optionee’s participation in the Plan, including a transfer to any broker or other third party with
whom the Optionee elects to deposit Shares acquired under the Plan of such Data as may be required for the administration of the Plan and/or the subsequent holding of Shares on the Optionee’s behalf. The Optionee may, at any time, view the
Data, require any necessary modifications of Data or withdraw the consents set forth in this Subsection (j) by contacting the Human Resources Department of the Company in writing. 
 SECTION 13. ACKNOWLEDGEMENTS OF THE OPTIONEE. 
 (a) Tax Consequences.
The Optionee agrees that the Company does not have a duty to design or administer the Plan or its other compensation programs in a manner that minimizes the Optionee’s tax liabilities. The Optionee shall not make any claim against the Company
or its Board of Directors, officers or employees related to tax liabilities arising from this option or the Optionee’s other compensation. In particular, the Optionee acknowledges that this option is exempt from Section 409A of the Code
only if the Exercise Price is at least equal to the Fair Market Value per Share on the Date of Grant. Since Shares are not traded on an established securities market, the determination of their Fair Market Value is made by the Board of Directors or
by an independent valuation firm retained by the Company. The Optionee acknowledges that there is no guarantee in either case that the Internal Revenue Service will agree with the valuation, and the Optionee shall not make any claim against the
Company or its Board of Directors, officers or employees in the event that the Internal Revenue Service asserts that the valuation was too low. 
 (b) Electronic Delivery of Documents. The Optionee agrees that the Company may deliver by email all documents relating to the Plan or this option (including, without limitation, a copy of the Plan)
and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures that may be required by the Securities and Exchange Commission). The Optionee also agrees that the Company may
deliver these documents by posting them on a website maintained by the Company or by a third party under contract with the Company. If the Company posts these documents on a website, it shall notify the Optionee by email. 

SECTION 14. DEFINITIONS. 

(a) “Agreement” shall mean this Stock Option Agreement. 

(b) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a
Committee has been appointed, such Committee. 
 (c) “Code” shall mean the Internal Revenue Code of 1986, as
amended. 
 (d) “Committee” shall mean a committee of the Board of Directors, as described in Section 2 of
the Plan. 
 (e) “Company” shall mean Imperva, Inc., a Delaware corporation. 

  
 10 

 (f) “Consultant” shall mean a person who performs bona fide services for
the Company, a Parent or a Subsidiary as a consultant or advisor, excluding Employees and Outside Directors. 
 (g)
“Date of Grant” shall mean the date of grant specified in the Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day
of the Optionee’s Service. 
 (h) “Disability” shall mean that the Optionee is unable to engage in any
substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted, or can be expected to last, for a continuous period of not less than 12 months.

 (i) “Employee” shall mean any individual who is a common-law employee of the Company, a Parent or a
Subsidiary. 
 (j) “Exercise Price” shall mean the amount for which one Share may be purchased upon exercise of
this option, as specified in the Notice of Stock Option Grant. 
 (k) “Fair Market Value” shall mean the fair
market value of a Share, as determined by the Board of Directors in good faith. Such determination shall be conclusive and binding on all persons. 
 (l) “Immediate Family” shall mean any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law,
brother-in-law or sister-in-law and shall include adoptive relationships. 
 (m) “ISO” shall mean an employee
incentive stock option described in Section 422(b) of the Code. 
 (n) “Notice of Stock Option Grant”
shall mean the document so entitled to which this Agreement is attached. 
 (o) “NSO” shall mean a stock option
not described in Sections 422(b) or 423(b) of the Code. 
 (p) “Optionee” shall mean the person named
in the Notice of Stock Option Grant. 
 (q) “Outside Director” shall mean a member of the Board of Directors
who is not an Employee. 
 (r) “Parent” shall mean any corporation (other than the Company) in an unbroken
chain of corporations ending with the Company, if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain.

  
 11 

 (s) “Plan” shall mean the Imperva, Inc. 2003 Stock Plan, as in effect on
the Date of Grant. 
 (t) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares
with respect to which this option is being exercised. 
 (u) “Right of First Refusal” shall mean the
Company’s right of first refusal described in Section 7. 
 (v) “Securities Act” shall mean the
Securities Act of 1933, as amended. 
 (w) “Service” shall mean service as an Employee, Outside Director or
Consultant. 
 (x) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the
Plan (if applicable). 
 (y) “Stock” shall mean the Common Stock of the Company. 

(z) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain of corporations beginning with
the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(aa) “Transferee” shall mean any person to whom the Optionee has directly or indirectly transferred any Share acquired
under this Agreement. 
 (bb) “Transfer Notice” shall mean the notice of a proposed transfer of Shares
described in Section 7. 

  
 12 

 IMPERVA, INC. 2003 STOCK PLAN

 NOTICE OF STOCK OPTION GRANT
(INTERNATIONAL) 
 The Optionee has been granted the following option to purchase shares of the Common Stock of Imperva,
Inc.: 
  

			
	Name of Optionee:	  	
		
	Total Number of Shares:	  	
		
	Type of Option:	  	
		
	Exercise Price per Share:	  	
		
	Date of Grant:	  	
		
	Date Exercisable:	  	This option may be exercised with respect to the first 25% of the Shares subject to this option when the Optionee completes 12 months of continuous Service after the Vesting
Commencement Date set forth below. This option may be exercised with respect to an additional 6.25% of the Shares subject to this option when the Optionee completes each three-month period of continuous Service thereafter.
		
	Vesting Commencement Date:	  	
		
	Expiration Date:	  	This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

By signing this Notice of Stock Option Grant, the Optionee and the Company agree that this option is granted under, and governed by the terms and
conditions of, the 2003 Stock Plan (as amended) and the Stock Option Agreement (International), copies of which Optionee acknowledges receipt. Section 13 of the Stock Option Agreement (International) includes important acknowledgements of
the Optionee. Optionee and the Company agree that signature of this Notice of Stock Option Grant may be affected electronically. 
  

							
	OPTIONEE:	 		 	IMPERVA, INC.
				
	  
	 		 	By:	  	  

		 		 	Title:	  	  

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 IMPERVA, INC. 2003 STOCK
PLAN: 
 STOCK OPTION AGREEMENT (INTERNATIONAL)

 SECTION 1. GRANT OF OPTION. 
 (a) Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the
Exercise Price the number of Shares set forth in the Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market Value per Share on the Date of Grant (110% of Fair Market Value if this option is designated as an
ISO in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). This option is intended to be an ISO or an NSO, as provided in the Notice of Stock Option Grant. 

(b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it shall be deemed to be
an NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 

(c) Stock Plan and Defined Terms. This option is granted pursuant to the Plan, a copy of which the Optionee acknowledges having
received. The provisions of the Plan are incorporated into this Agreement by this reference. Capitalized terms are defined in Section 14 of this Agreement. 
 SECTION 2. RIGHT TO EXERCISE. 
 (a) Exercisability. Subject to
Subsection (b) below and the other conditions set forth in this Agreement, all or part of this option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. 

(b) Stockholder Approval. Any other provision of this Agreement notwithstanding, no portion of this option shall be exercisable at
any time prior to the approval of the Plan by the Company’s stockholders. 
 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION.

 Except as otherwise provided in this Agreement, this option and the rights and privileges conferred hereby shall not be
sold, pledged or otherwise transferred (whether by 

  
 1 

 
operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy or similar process. 
 SECTION 4. EXERCISE PROCEDURES. 
 (a) Notice of Exercise. The
Optionee or the Optionee’s representative may exercise this option by giving written notice to the Company pursuant to Section 12(c). The notice shall specify the election to exercise this option, the number of Shares for which it is being
exercised and the form of payment. The person exercising this option shall sign the notice. In the event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by proof (satisfactory to the
Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under Section 5 for the full
amount of the Purchase Price. 
 (b) Issuance of Shares. After receiving a proper notice of exercise, the Company shall
cause to be issued one or more certificates evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such person and his or
her spouse as community property or as joint tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable trust. The Company shall cause such certificates to be delivered to or upon the order of
the person exercising this option. 
 (c) Withholding Taxes. In the event that the Company determines that it is required
to withhold any tax as a result of the exercise of this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall
also make arrangements satisfactory to the Company to enable it to satisfy any withholding requirements that may arise in connection with the disposition of Shares purchased by exercising this option. 

SECTION 5. PAYMENT FOR STOCK. 
 (a) Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 
 (b) Surrender of Stock. At the discretion of the Board of Directors, all or any part of the Purchase Price may be paid by surrendering, or attesting to the ownership of, Shares that are already
owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and shall be valued at their Fair Market Value as of the date when this option is exercised. 

(c) Exercise/Sale. All or part of the Purchase Price and any withholding taxes may be paid by the delivery (on a form prescribed
by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to the Company. However, payment pursuant to this Subsection (c) shall be permitted only
if (i) Stock then is publicly traded and (ii) such payment does not violate applicable law. 

  
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 SECTION 6. TERM AND EXPIRATION. 

(a) Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which
date is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). 

(b) Termination of Service (Except by Death). If the Optionee’s Service terminates for any reason other than death, then this
option shall expire on the earliest of the following occasions: 
 (i) The expiration date determined pursuant to
Subsection (a) above; 
 (ii) The date three months after the termination of the Optionee’s Service for
any reason other than Disability; or 
 (iii) The date 12 months after the termination of the Optionee’s
Service by reason of Disability. 
 The Optionee may exercise all or part of this option at any time before its expiration under the preceding
sentence, but only to the extent that this option had become exercisable before the Optionee’s Service terminated. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which
this option is not yet exercisable. In the event that the Optionee dies after termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the executors or administrators of
the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s Service
terminated. 
 (c) Death of the Optionee. If the Optionee dies while in Service, then this option shall expire on the
earlier of the following dates: 
 (i) The expiration date determined pursuant to Subsection (a) above; or

 (ii) The date 12 months after the Optionee’s death. 

All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators of the
Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s death. When
the Optionee dies, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable. 
 (d) Part-Time Employment and Leaves of Absence. If the Optionee commences working on a part-time basis, then the Company may adjust the vesting schedule set forth in the Notice of Stock Option
Grant in accordance with the Company’s part-time work 

  
 3 

 
policy or the terms of an agreement between the Optionee and the Company pertaining to his or her part-time schedule. If the Optionee goes on a leave of absence, then the Company may adjust the
vesting schedule set forth in the Notice of Stock Option Grant in accordance with the Company’s leave of absence policy or the terms of such leave. Except as provided in the preceding sentence, Service shall be deemed to continue for any
purpose under this Agreement while the Optionee is on a bona fide leave of absence, if (i) such leave was approved by the Company in writing and (ii) continued crediting of Service for such purpose is expressly required by the terms
of such leave or by applicable law (as determined by the Company). Service shall be deemed to terminate when such leave ends, unless the Optionee immediately returns to active work. 

(e) Notice Concerning ISO Treatment. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it ceases to
qualify for favorable tax treatment as an ISO to the extent that it is exercised: 
 (i) More than three months
after the date when the Optionee ceases to be an Employee for any reason other than death or Disability; 
 (ii)
More than 12 months after the date when the Optionee ceases to be an Employee by reason of Disability; or 

(iii) More than three months after the date when the Optionee has been on a leave of absence for 90 days, unless the
Optionee’s reemployment rights following such leave were guaranteed by statute or by contract. 
 SECTION 7. RIGHT OF FIRST REFUSAL.

 (a) Right of First Refusal. In the event that the Optionee proposes to sell, pledge or otherwise transfer to a
third party any Shares acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all (and not less than all) of such Shares. If the Optionee desires to transfer Shares acquired
under this Agreement, the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be transferred, the proposed transfer price, the name and address of the
proposed Transferee and proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal, State or foreign securities laws. The Transfer Notice shall be signed both by the Optionee and by the proposed
Transferee and must constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all, and not less than all, of the Shares on the terms of the proposal described in the Transfer Notice
(subject, however, to any change in such terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First Refusal within 30 days after the date when the Transfer Notice was received by the Company.

 (b) Transfer of Shares. If the Company fails to exercise its Right of First Refusal within 30 days after the date
when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice on the terms and conditions described in
the Transfer 

  
 4 

 
Notice, provided that any such sale is made in compliance with applicable federal, State and foreign securities laws and not in violation of any other contractual restrictions to which the
Optionee is bound. Any proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of First Refusal and shall
require compliance with the procedure described in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days
after the date when the Company received the Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be
made in a form other than cash or cash equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer
Notice. 
 (c) Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company
with or into another entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a
recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents) that are by reason of such transaction exchanged for, or distributed with respect
to, any Shares subject to this Section 7 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made to the number and/or class of the
Shares subject to this Section 7. 
 (d) Termination of Right of First Refusal. Any other provision of this
Section 7 notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of First Refusal, and the Optionee shall have no
obligation to comply with the procedures prescribed by Subsections (a) and (b) above. 
 (e) Permitted
Transfers. This Section 7 shall not apply to (i) a transfer by beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of the Optionee’s Immediate Family or to a trust established by
the Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this
Agreement. If the Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or after the Company has failed to exercise the Right of First Refusal, then this Agreement shall apply to the Transferee to the
same extent as to the Optionee. 
 (f) Termination of Rights as Stockholder. If the Company makes available, at the time
and place and in the amount and form provided in this Agreement, the consideration for the Shares to be purchased in accordance with this Section 7, then after such time the person from whom such Shares are to be purchased shall no longer have
any rights as a holder of such Shares (other than the right to receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the

  
 5 

 
applicable provisions hereof, whether or not the certificate(s) therefor have been delivered as required by this Agreement. 

(g) Assignment of Right of First Refusal. The Board of Directors may freely assign the Company’s Right of First Refusal, in
whole or in part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and obligations under this Section 7. 
 SECTION 8. LEGALITY OF INITIAL ISSUANCE. 
 No Shares shall be issued upon
the exercise of this option unless and until the Company has determined that: 
 (a) It and the Optionee have
taken any actions required to register the Shares under the Securities Act or to perfect an exemption from the registration requirements thereof; 
 (b) Any applicable listing requirement of any stock exchange or other securities market on which Stock is listed has been satisfied; and 

(c) Any other applicable provision of federal, State or foreign law has been satisfied. 

SECTION 9. NO REGISTRATION RIGHTS. 
 The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law. The Company shall not be obligated to take any affirmative
action in order to cause the sale of Shares under this Agreement to comply with any law. 
 SECTION 10. RESTRICTIONS ON TRANSFER OF SHARES.

 (a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been
registered under the Securities Act or have been registered or qualified under the securities laws of any State, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of
appropriate legends on stock certificates or the imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act, the securities laws
of any State or any other law. 
 (b) Market Stand-Off. In connection with any underwritten public offering by the
Company of its equity securities pursuant to an effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short
sale of, loan, hypothecate, pledge, offer, grant or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing
transactions with respect to, any Shares acquired under this Agreement without the prior written consent of the Company or its managing underwriter. Such restriction (the “Market Stand-Off”)

  
 6 

 
shall be in effect for such period of time following the date of the final prospectus for the offering as may be requested by the Company or such underwriter. In no event, however, shall such
period exceed 180 days plus such additional period as may reasonably be requested by the Company or such underwriter to accommodate regulatory restrictions on (i) the publication or other distribution of research reports or (ii) analyst
recommendations and opinions, including (without limitation) the restrictions set forth in Rule 2711(f)(4) of the National Association of Securities Dealers and Rule 472(f)(4) of the New York Stock Exchange, as amended, or any similar
successor rules. The Market Stand-Off shall in any event terminate two years after the date of the Company’s initial public offering. In the event of the declaration of a stock dividend, a spin-off, a stock split, an adjustment in
conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities without receipt of consideration, any new, substituted or additional securities which are by reason of such transaction distributed
with respect to any Shares subject to the Market Stand-Off, or into which such Shares thereby become convertible, shall immediately be subject to the Market Stand-Off. In order to enforce the Market Stand-Off, the Company may impose stop-transfer
instructions with respect to the Shares acquired under this Agreement until the end of the applicable stand-off period. The Company’s underwriters shall be beneficiaries of the agreement set forth in this Subsection (b). This
Subsection (b) shall not apply to Shares registered in the public offering under the Securities Act. 
 (c) Investment
Intent at Grant. The Optionee represents and agrees that the Shares to be acquired upon exercising this option will be acquired for investment, and not with a view to the sale or distribution thereof. 

(d) Investment Intent at Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act
but an exemption is available that requires an investment representation or other representation, the Optionee shall represent and agree at the time of exercise that the Shares being acquired upon exercising this option are being acquired for
investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are deemed necessary or appropriate by the Company and its counsel. 

(e) Legends. All certificates evidencing Shares purchased under this Agreement shall bear the following legend: 

“THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE
WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE
SHARES. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.” 

  
 7 

 All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear
the following legend (and such other restrictive legends as are required or deemed advisable under the provisions of any applicable law): 
 “THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF
UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.” 
 (f) Removal of Legends. If, in the opinion of the Company and its counsel, any legend placed on a stock certificate representing Shares sold under this Agreement is no longer required, the holder
of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but without such legend. 
 (g) Administration. Any determination by the Company and its counsel in connection with any of the matters set forth in this Section 10 shall be conclusive and binding on the Optionee and all
other persons. 
 SECTION 11. ADJUSTMENT OF SHARES. 
 In the event of any transaction described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the number and kind of Shares subject to this option and the Exercise
Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the agreement of merger or consolidation, as provided in Section 8(b)
of the Plan. 
 SECTION 12. MISCELLANEOUS PROVISIONS. 
 (a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder with respect to any Shares subject to this option until the Optionee
or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5. 
 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the Optionee any right to continue in Service for any period of specific duration or interfere with or otherwise
restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which rights are hereby expressly reserved by each, to terminate his or her Service at any time and for any reason,
with or without cause. 
 (c) Notice. Any notice required by the terms of this Agreement shall be given in writing. It
shall be deemed effective upon (i) personal delivery, (ii) deposit with the United States Postal Service, by registered or certified mail, with postage and fees prepaid or (iii) deposit with Federal Express Corporation, with shipping
charges prepaid. Notice shall be addressed to the Company at its principal executive office and to the Optionee at the address that he or she most recently provided to the Company in accordance with this Subsection (c). 

  
 8 

 (d) Entire Agreement. The Notice of Stock Option Grant, this Agreement and the Plan
constitute the entire contract between the parties hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether express or implied) that relate to the
subject matter hereof. 
 (e) Choice of Law. This Agreement shall be governed by, and construed in accordance with, the
laws of the State of Delaware, as such laws are applied to contracts entered into and performed in such State. 
 (f) Plan
Discretionary. The Optionee understands and acknowledges that (i) the Plan is entirely discretionary, (ii) the Company and the Optionee’s employer have reserved the right to amend, suspend or terminate the Plan at any time,
(iii) the grant of an option does not in any way create any contractual or other right to receive additional grants of options (or benefits in lieu of options) at any time or in any amount and (iv) all determinations with respect to any
additional grants, including (without limitation) the times when options will be granted, the number of Shares offered, the Exercise Price and the vesting schedule, will be at the sole discretion of the Company. 

(g) Extraordinary Compensation. The value of this option shall be an extraordinary item of compensation outside the scope of the
Optionee’s employment contract, if any, and shall not be considered a part of his or her normal or expected compensation for purposes of calculating severance, resignation, redundancy or end-of-service payments, bonuses, long-service awards,
pension or retirement benefits or similar payments. 
 (h) Termination of Service. The Optionee understands and
acknowledges that participation in the Plan ceases upon termination of his or her Service for any reason, except as may explicitly be provided otherwise in the Plan or this Agreement. 

(i) Authorization to Disclose. The Optionee hereby authorizes and directs the Optionee’s employer to disclose to the Company
or any Subsidiary any information regarding the Optionee’s employment, the nature and amount of the Optionee’s compensation and the fact and conditions of the Optionee’s participation in the Plan, as the Optionee’s employer deems
necessary or appropriate to facilitate the administration of the Plan. 
 (j) Personal Data Authorization. The Optionee
consents to the collection, use and transfer of personal data as described in this Subsection (j). The Optionee understands and acknowledges that the Company, the Optionee’s employer and the Company’s other Subsidiaries hold certain
personal information regarding the Optionee for the purpose of managing and administering the Plan, including (without limitation) the Optionee’s name, home address, telephone number, date of birth, social insurance number, salary, nationality,
job title, any Shares or directorships held in the Company and details of all options or any other entitlements to Shares awarded, canceled, exercised, vested, unvested or outstanding in the Optionee’s favor (the “Data”). The Optionee
further understands and acknowledges that the Company and/or its Subsidiaries will transfer Data among themselves as necessary for the purpose of implementation, administration and management of the Optionee’s participation in the Plan and that
the Company and/or any Subsidiary may each further transfer Data to any third party assisting the Company in the implementation, administration and management of the Plan. 

  
 9 

 
The Optionee understands and acknowledges that the recipients of Data may be located in the United States or elsewhere. The Optionee authorizes such recipients to receive, possess, use, retain
and transfer Data, in electronic or other form, for the purpose of administering the Optionee’s participation in the Plan, including a transfer to any broker or other third party with whom the Optionee elects to deposit Shares acquired under
the Plan of such Data as may be required for the administration of the Plan and/or the subsequent holding of Shares on the Optionee’s behalf. The Optionee may, at any time, view the Data, require any necessary modifications of Data or withdraw
the consents set forth in this Subsection (j) by contacting the Human Resources Department of the Company in writing. 
 SECTION 13.
ACKNOWLEDGEMENTS OF THE OPTIONEE. 
 (a) Tax Consequences. The Optionee agrees that the Company does not have a duty
to design or administer the Plan or its other compensation programs in a manner that minimizes the Optionee’s tax liabilities. The Optionee shall not make any claim against the Company or its Board of Directors, officers or employees related to
tax liabilities arising from this option or the Optionee’s other compensation. In particular, the Optionee acknowledges that this option is exempt from Section 409A of the Code only if the Exercise Price is at least equal to the Fair
Market Value per Share on the Date of Grant. Since Shares are not traded on an established securities market, the determination of their Fair Market Value is made by the Board of Directors or by an independent valuation firm retained by the Company.
The Optionee acknowledges that there is no guarantee in either case that the Internal Revenue Service will agree with the valuation, and the Optionee shall not make any claim against the Company or its Board of Directors, officers or employees in
the event that the Internal Revenue Service asserts that the valuation was too low. 
 (b) Electronic Delivery of
Documents. The Optionee agrees that the Company may deliver by email all documents relating to the Plan or this option (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its
security holders (including, without limitation, disclosures that may be required by the Securities and Exchange Commission). The Optionee also agrees that the Company may deliver these documents by posting them on a website maintained by the
Company or by a third party under contract with the Company. If the Company posts these documents on a website, it shall notify the Optionee by email. 
 SECTION 14. DEFINITIONS. 
 (a) “Agreement” shall mean this
Stock Option Agreement. 
 (b) “Board of Directors” shall mean the Board of Directors of the Company, as
constituted from time to time or, if a Committee has been appointed, such Committee. 
 (c) “Code” shall mean
the Internal Revenue Code of 1986, as amended. 
 (d) “Committee” shall mean a committee of the Board of
Directors, as described in Section 2 of the Plan. 
 (e) “Company” shall mean Imperva, Inc., a Delaware
corporation. 

  
 10 

 (f) “Consultant” shall mean a person who performs bona fide services for
the Company, a Parent or a Subsidiary as a consultant or advisor, excluding Employees and Outside Directors. 
 (g)
“Date of Grant” shall mean the date of grant specified in the Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day
of the Optionee’s Service. 
 (h) “Disability” shall mean that the Optionee is unable to engage in any
substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or which has lasted, or can be expected to last, for a continuous period of not less than 12 months.

 (i) “Employee” shall mean any individual who is a common-law employee of the Company, a Parent or a
Subsidiary. 
 (j) “Exercise Price” shall mean the amount for which one Share may be purchased upon exercise of
this option, as specified in the Notice of Stock Option Grant. 
 (k) “Fair Market Value” shall mean the fair
market value of a Share, as determined by the Board of Directors in good faith. Such determination shall be conclusive and binding on all persons. 
 (l) “Immediate Family” shall mean any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law,
brother-in-law or sister-in-law and shall include adoptive relationships. 
 (m) “ISO” shall mean an employee
incentive stock option described in Section 422(b) of the Code. 
 (n) “Notice of Stock Option Grant”
shall mean the document so entitled to which this Agreement is attached. 
 (o) “NSO” shall mean a stock option
not described in Sections 422(b) or 423(b) of the Code. 
 (p) “Optionee” shall mean the person named
in the Notice of Stock Option Grant. 
 (q) “Outside Director” shall mean a member of the Board of Directors
who is not an Employee. 
 (r) “Parent” shall mean any corporation (other than the Company) in an unbroken
chain of corporations ending with the Company, if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain.

  
 11 

 (s) “Plan” shall mean the Imperva, Inc. 2003 Stock Plan, as in effect on
the Date of Grant. 
 (t) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares
with respect to which this option is being exercised. 
 (u) “Right of First Refusal” shall mean the
Company’s right of first refusal described in Section 7. 
 (v) “Securities Act” shall mean the
Securities Act of 1933, as amended. 
 (w) “Service” shall mean service as an Employee, Outside Director or
Consultant. 
 (x) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the
Plan (if applicable). 
 (y) “Stock” shall mean the Common Stock of the Company. 

(z) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain of corporations beginning with
the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(aa) “Transferee” shall mean any person to whom the Optionee has directly or indirectly transferred any Share acquired
under this Agreement. 
 (bb) “Transfer Notice” shall mean the notice of a proposed transfer of Shares
described in Section 7. 

  
 12 

 IMPERVA, INC. 2003 STOCK PLAN

 NOTICE OF STOCK OPTION GRANT
(INTERNATIONAL) 
 The Optionee has been granted the following option to purchase shares of the Common Stock of Imperva,
Inc.: 
  

					
		 	Name of Optionee:	  	
			
		 	Total Number of Shares:	  	
			
		 	Type of Option:	  	
			
		 	Exercise Price per Share:	  	
			
		 	Date of Grant:	  	
			
		 	Date Exercisable:	  	This option may be exercised with respect to the first 25% of the Shares subject to this option when the Optionee completes 12 months of continuous Service after the Vesting
Commencement Date set forth below. This option may be exercised with respect to an additional 6.25% of the Shares subject to this option when the Optionee completes each three-month period of continuous Service thereafter.
			
		 	Vesting Commencement Date:	  	
			
		 	Expiration Date:	  	This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

By signing this Notice of Stock Option Grant, the Optionee and the Company agree that this option is granted under, and governed by the terms and
conditions of, the 2003 Stock Plan (as amended) and the Stock Option Agreement (International), copies of which Optionee acknowledges receipt. Section 13 of the Stock Option Agreement (International) includes important acknowledgements of
the Optionee. Optionee and the Company agree that signature of this Notice of Stock Option Grant may be affected electronically. 
  

							
	OPTIONEE:	 		  	IMPERVA, INC.
				
	  
	 		  	By:	  	  

		 		  	Title:	  	      

 IMPERVA, INC. 2003 STOCK PLAN

 NOTICE OF STOCK OPTION EXERCISE

 (INTERNATIONAL OPTIONEE) 

You must sign this Notice on Page 3 before submitting it to the Company. 

OPTIONEE INFORMATION: 
  

									
	Name:	 	  
	 		  	Tax Identification Number:	  	  

					
	Address:	 	  
	 		  	Employee Number:	  	  

					
		 	  
	 		  		  	

 OPTION INFORMATION: 

 

			
	Date of Grant:             ,      200    	  	Type of Stock Option:
		
	Exercise Price per Share: $        	  	 ̈ Nonstatutory (NSO)
		
	Total number of shares of Common Stock of Imperva, Inc. (the “Company”) covered by option:
                    	  	

 EXERCISE INFORMATION: 

Number of shares of Common Stock of the Company for which option is being exercised now:
                    . (These shares are referred to below as the “Purchased Shares.”) 

Total Exercise Price for the Purchased Shares: $         

Form of payment enclosed [check all that apply]: 

 

	 ̈	Check for $        , payable to “Imperva, Inc.” 

 

	 ̈	Certificate(s) for                      shares of Common
Stock of the Company that I have owned for at least six months. (These shares will be valued as of the date this notice is received by the Company.) 

  

	 ̈	Attestation Form covering                      shares of
Common Stock of the Company. (These shares will be valued as of the date this notice is received by the Company.) 

 Name(s) in which the Purchased Shares should be registered 

 

	 ̈	In my name only 

  

	 ̈	Other
                                         
                                         
                                         
                                         
                 

  

					
	 The certificate for the Purchased Shares
	 		 	  

	 should be sent to the following address:
	 		 	  

		 		 	  

		 		 	  

 REPRESENTATIONS AND ACKNOWLEDGMENTS OF THE OPTIONEE: 

 

	1.	I represent and warrant to the Company that I am acquiring and will hold the Purchased Shares for investment for my account only, and not with a view to, or for resale
in connection with, any “distribution” of the Purchased Shares within the meaning of the Securities Act of 1933, as amended (the “Securities Act”). 

 

	2.	I understand that the Purchased Shares have not been registered under the Securities Act by reason of a specific exemption therefrom and that the Purchased Shares must
be held indefinitely, unless they are subsequently registered under the Securities Act or I obtain an opinion of counsel (in form and substance satisfactory to the Company and its counsel) that registration is not required. 

 

	3.	I acknowledge that the Company is under no obligation to register the Purchased Shares. 

 

	4.	I am aware of the adoption of Rule 144 by the Securities and Exchange Commission under the Securities Act, which permits limited public resales of securities acquired
in a non-public offering, subject to the satisfaction of certain conditions. These conditions include (without limitation) that certain current public information about the issuer is available, that the resale occurs only after the holding period
required by Rule 144 has been satisfied, that the sale occurs through an unsolicited “broker’s transaction” and that the amount of securities being sold during any three-month period does not exceed specified limitations. I
understand that the conditions for resale set forth in Rule 144 have not been satisfied and that the Company has no plans to satisfy these conditions in the foreseeable future. 

 

	5.	I will not sell, transfer or otherwise dispose of the Purchased Shares in violation of the Securities Act, the Securities Exchange Act of 1934, or the rules promulgated
thereunder, including Rule 144 under the Securities Act. 

  

	6.	I acknowledge that I have received and had access to such information as I consider necessary or appropriate for deciding whether to invest in the Purchased Shares and
that I had an opportunity to ask questions and receive answers from the Company regarding the terms and conditions of the issuance of the Purchased Shares. 

 

	7.	I am aware that my investment in the Company is a speculative investment that has limited liquidity and is subject to the risk of complete loss. I am able, without
impairing my financial condition, to hold the Purchased Shares for an indefinite period and to suffer a complete loss of my investment in the Purchased Shares. 

  
 2 

	8	I acknowledge that the Purchased Shares remain subject to the Company’s right of first refusal and the market stand-off (sometimes referred to as the
“lock-up”), all in accordance with the applicable Notice of Stock Option Grant and Stock Option Agreement. 

  

	9	I acknowledge that I am acquiring the Purchased Shares subject to all other terms of the Notice of Stock Option Grant and Stock Option Agreement.

  

	10	I acknowledge that the Company has encouraged me to consult my own adviser to determine the tax consequences of acquiring the Purchased Shares at this time.

  

	11	I agree to seek the consent of my spouse to the extent required by the Company to enforce the foregoing. 

 

							
	SIGNATURE:	 		  	DATE:	  	
				
	  
	 		  	  
	  	

  
 3 

 UK SUB_PLAN OF THE
IMPERVA, INC. 
 2003 STOCK PLAN (AS
AMENDED JULY 28 2006) 
 NOTICE OF STOCK
OPTION GRANT (INSTALLMENT) 
 You have been granted the following option to
purchase shares of the Common Stock of Imperva, Inc. (the “Company”): 
  

			
	 Name of Optionee:
	 	
		
	 Total Number of Shares:
	 	
		
	 Type of Option:
	 	UK Unapproved Option
		
	 Exercise Price Per Share:
	 	
		
	 Date of Grant:
	 	
		
	 Date Exercisable:
	 	This option may be exercised with respect to 25% of the Shares subject to this option when the Optionee completes 12 months of continuous Service after the Vesting Commencement
Date. This option may be exercised with respect to an additional 6.25% of the Shares subject to this option when the Optionee completes each 3-month period of continuous Service thereafter.
		
	 Vesting Commencement Date:
	 	
		
	 Expiration Date:
	 	This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option Agreement.

By your signature and the signature of the Company’s representative below, you and the Company agree that this option is granted under and governed
by the terms and conditions of the Plan and the Stock Option Agreement, both of which are attached to and made a part of this document. 

  
 1 

 This agreement has been executed and delivered as a deed on the date written below. 

Dated:                     

 

			
	 SIGNED as a DEED
	  	)
	 By IMPERVA, INC.
	  	)
	 acting by the under-mentioned
	  	)
	 person(s) acting on the authority
	  	)
	 of the Corporation in accordance
	  	)
	 with the laws of the territory of
	  	)
	 its incorporation:
	  	)
		
	 Authorised signatory
	  	
		
	 SIGNED as a DEED
	  	)
	 by [insert name of Optionee]
	  	)
		
	 in the presence of:
	  	
		
	 Witness signature:
	  	
		
	 Name:
	  	
		
	 Address:
	  	
		
	 Occupation:
	  	

  
 2 

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 IMPERVA, INC. 

2003 STOCK PLAN: 
 STOCK OPTION AGREEMENT 
 SECTION 1. GRANT
OF OPTION. 
 (a) Option. On the terms and conditions set forth in the Notice of Stock Option Grant and this
Agreement, the Company grants to the Optionee on the Date of Grant the option to purchase at the Exercise Price the number of Shares set forth in the Notice of Stock Option Grant. The Exercise Price is agreed to be at least 100% of the Fair Market
Value per Share on the Date of Grant. This option is intended to be an Unapproved Option, as provided in the Notice of Stock Option Grant. 
 (b) Stock Plan and Defined Terms. This option is granted pursuant to the Plan, the Joint Election and the Section 431 Election, copies of which the Optionee acknowledges having received. The
provisions of the Plan are incorporated into this Agreement by this reference. Any interpretation of this Agreement will be made in accordance with the Plan, but in the event there is any contradiction between the provisions of this Agreement and
the Plan, the provisions of the Plan will prevail. Capitalized terms are defined in Section 13 of this Agreement. 
 SECTION 2. RIGHT TO
EXERCISE. 
 (a) Exercisability. Subject to Subsection (b) below and the other conditions set forth in this
Agreement, all or part of this option may be exercised prior to its expiration at the time or times set forth in the Notice of Stock Option Grant. 
 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION. 
 Except as otherwise
provided in this Agreement, this option and the rights and privileges conferred hereby shall not be sold, pledged or otherwise transferred (whether by operation of law or otherwise) and shall not be subject to sale under execution, attachment, levy
or similar process. 

 SECTION 4. EXERCISE PROCEDURES. 

(a) Notice of Exercise. The Optionee or the Optionee’s representative may exercise this option by giving written notice to the
Company pursuant to Section 12(c). The notice shall specify the election to exercise this option, the number of Shares for which it is being exercised and the form of payment. The person exercising this option shall sign the notice. In the
event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by proof (satisfactory to the Company) of the representative’s right to exercise this option. The exercise of this Option is
contingent upon the Optionee having executed (i) the Joint Election and (ii) the Section 431 Election. The Optionee or the Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a
form permissible under Section 5: 
  

	 	(i)	for the full amount of the Purchase Price; 

  

	 	(ii)	payment of the Option Tax Liability; 

  

	 	(iii)	and payment of any Secondary NIC Liability (as defined in Section 4(g). 

 (b) Issuance of Shares. After receiving a proper notice of exercise, and payment and evidence of the Joint Election and Section 431 Election being executed, the Company shall cause to be
issued one or more certificates evidencing the Shares for which this option has been exercised. Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such person and his or her spouse as
community property or as joint tenants with the right of survivorship or (iii) with the Company’s consent, in the name of a revocable trust. The Company shall cause such certificates to be delivered to or upon the order of the person
exercising this option. 
 (c) Withholding Taxes. In the event that the Company determines that it is required to
withhold any tax as a result of the exercise of this option, the Optionee, as a condition to the exercise of this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall
also make arrangements satisfactory to the Company to enable it to satisfy any withholding requirements that may arise in connection with the disposition of Shares purchased by exercising this option 

(d) Optionee’s Taxation Indemnity. To the extent permitted by law, the Optionee agrees to indemnify and keep indemnified the
Company and the Company as trustee for and on behalf of any related corporation, in respect of any liability or obligation of the Company and/or any related corporation to account for income tax (under PAYE) or any other taxation provisions and
primary Class 1 National Insurance Contributions (“NICs”) in the United Kingdom to the extent arising from the grant, exercise, assignment, release, cancellation or any other disposal of this Option or arising out of the acquisition,
retention and disposal of the Common Shares acquired pursuant to this Option. 
 (e) The Company shall not be obliged to allot
and issue any Common Shares or any interest in Common Shares pursuant to the exercise of an Option unless and until the Optionee has paid to the Company such sum as is, in the opinion of the Company, sufficient to

  
 2 

 
indemnify the Company in full against any liability the Company has to account to HM Revenue & Customs for any amount of, or representing, income tax and/or primary NICs (the
“Option Tax Liability”), or the Optionee has made such other arrangement as in the opinion of the Company will ensure that the full amount of any Option Tax Liability will be recovered from you within such period as the Company may then
determine. 
 (f) In the absence of any such other arrangement being made, the Company shall have the right to retain out of the
aggregate number of Common Shares to which the Optionee would have otherwise been entitled upon the exercise of this option, such number of Common Shares as, in the opinion of the Company, will enable the Company to sell as agent for the Optionee
(at the best price which can reasonably expect to be obtained at the time of the sale) and to pay over to the Company sufficient monies out of the net proceeds of sale, after deduction of all fees, commissions and expenses incurred in relation to
such sale, to satisfy the Optionee’s liability under such indemnity. 
 (g) As consideration of the grant of an Option
under the Plan the Optionee joins with the Company and the employer, or if and to the extent that there is a change in the law, any other company or person who is or becomes a secondary contributor for NIC purposes in respect of this Option (the
“Secondary Contributor”) in making an election (in such terms and such form as provided in paragraphs 3A and 3B of Schedule 1 to the Social Security Contributions and Benefits Act 1992) which has been approved by HM Revenue &
Customs (the “Joint Election”), for the transfer of the whole of any liability of the Secondary Contributor to Employer’s Class 1 NICs (the “Secondary NIC Liability”) to be transferred to the Optionee. The Joint Election
must be executed before the Option can be exercised. 
 SECTION 5. PAYMENT FOR STOCK. 

(a) Cash. All or part of the Purchase Price the Option Tax Liability and the Secondary NIC Liability may be paid in cash or cash
equivalents. 
 (b) Surrender of Stock. At the discretion of the Board of Directors, all or any part of the Purchase
Price, the Option Tax Liability and the Secondary NIC Liability may be paid by surrendering, or attesting to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer
and shall be valued at their Fair Market Value on the date when this option is exercised. The Optionee shall not surrender, or attest to the ownership of, Shares in payment of the Purchase Price, the Option Tax Liability and the Secondary NIC
Liability if such action would cause the Company to recognize compensation expense (or additional compensation expense) with respect to this option for financial reporting purposes. 

(c) Exercise/Sale. At the discretion of the Board of Directors, if Stock is publicly traded, all or part of the Purchase Price,
and the Option Tax Liability and the Secondary NIC Liability and any withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to
deliver all or part of the sales proceeds to the Company. 

  
 3 

 (d) Exercise/Pledge. At the discretion of the Board of Directors, if Stock is
publicly traded, all or part of the Purchase Price and any withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to pledge Shares to a securities broker or lender approved by the Company, as
security for a loan, and to deliver all or part of the loan proceeds to the Company. 
 SECTION 6. TERM AND EXPIRATION. 

(a) Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock Option Grant, which
date is 10 years after the Date of Grant. 
 (b) Termination of Service (Except by Death). If the Optionee’s Service
terminates for any reason other than death, then this option shall expire on the earliest of the following occasions: 
 (i) The expiration date determined pursuant to Subsection (a) above; 
 (ii) The date 3 months after the termination of the Optionee’s Service for any reason other than Disability, or such later date as the Board of Directors may determine; or 

(iii) The date 6 months after the termination of the Optionee’s Service by reason of Disability, or such other date
as the Board of Directors may determine (but not less than six months after the termination of the Optionee’s Service by reason of Disability). 
 The Optionee may exercise all or part of this option at any time before its expiration under the preceding sentence, but only to the extent that this option had become exercisable before the
Optionee’s Service terminated. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable. In the event that the Optionee dies after
termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the executors or administrators of the Optionee’s estate or by any person who has acquired this option
directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s Service terminated. 

(c) Death of the Optionee. If the Optionee dies while in Service, then this option shall expire on the earlier of the following
dates: 
 (i) The expiration date determined pursuant to Subsection (a) above; or 

(ii) The date 12 months after the Optionee’s death. 
 All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators of the Optionee’s estate but only to the extent that this
option had become exercisable before the Optionee’s death. When the Optionee dies, this 

  
 4 

 
option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable. 
 (d) Leaves of Absence. For any purpose under this Agreement, Service shall be deemed to continue while the Optionee is on a bona fide leave of absence, if such leave was approved by the
Company in writing and if continued crediting of Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). 
 SECTION 7. RIGHT OF FIRST REFUSAL. 
 (a) Right of First Refusal. In
the event that the Optionee proposes to sell, pledge or otherwise transfer to a third party any Shares acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all or any
portion of such Shares. If the Optionee desires to transfer Shares acquired under this Agreement, the Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be
transferred, the proposed transfer price, the name and address of the proposed Transferee and proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal or state securities laws. The Transfer Notice
shall be signed both by the Optionee and by the proposed Transferee and must constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all or any portion of the Shares on the terms of
the proposal described in the Transfer Notice (subject, however, to any change in such terms permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First Refusal within 30 days after the date when the Transfer
Notice was received by the Company. 
 (b) Transfer of Shares. If the Company fails to exercise its Right of First
Refusal within 30 days after the date when it received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice
on the terms and conditions described in the Transfer Notice, provided that any such sale is made in compliance with applicable federal and state securities laws and not in violation of any other contractual restrictions to which the Optionee is
bound. Any proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of First Refusal and shall require
compliance with the procedure described in Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days after
the date when the Company received the Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be made in
a form other than cash or cash equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer Notice.

 (c) Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company with or
into another entity, any other corporate 

  
 5 

 
reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio,
a recapitalization or a similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents that are paid other than as an ordinary cash dividends) that are by reason of such
transaction exchanged for, or distributed with respect to, any Shares subject to this Section 7 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or
property shall be made to the number and/or class of the Shares subject to this Section 7. 
 (d) Termination of Right
of First Refusal. Any other provision of this Section 7 notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of
First Refusal, and the Optionee shall have no obligation to comply with the procedures prescribed by Subsections (a) and (b) above. 
 (e) Permitted Transfers. This Section 7 shall not apply to (i) a transfer by beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of the
Optionee’s Immediate Family or to a trust established by the Optionee for the benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form
prescribed by the Company to be bound by all provisions of this Agreement. If the Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or after the Company has failed to exercise the Right of First
Refusal, then this Agreement shall apply to the Transferee to the same extent as to the Optionee. 
 (f) Termination of
Rights as Stockholder. If the Company makes available, at the time and place and in the amount and form provided in this Agreement, the consideration for the Shares to be purchased in accordance with this Section 7, then after such time the
person from whom such Shares are to be purchased shall no longer have any rights as a holder of such Shares (other than the right to receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been
purchased in accordance with the applicable provisions hereof, whether or not the certificate(s) therefor have been delivered as required by this Agreement. 
 (g) Assignment of Right of First Refusal. The Company may freely assign the Company’s Right of First Refusal, in whole or in part. Any person who accepts an assignment of the Right of First
Refusal from the Company shall assume all of the Company’s rights and obligations under this Section 7. 
 SECTION 8. LEGALITY OF
INITIAL ISSUANCE. 
 No Shares shall be issued upon the exercise of this option unless and until the Company has determined
that: 

  
 6 

 (a) It and the Optionee have taken any actions required to register the
Shares under the Securities Act or to perfect an exemption from the registration requirements thereof; 
 (b) Any
applicable listing requirement of any stock exchange or other securities market on which Stock is listed has been satisfied; 
 (c) Any other applicable provision of federal, state or foreign law has been satisfied; and 
 (d) The Purchase Price, the Option Tax Liability and the Secondary NIC Liablity have been received by the Company. 
 SECTION 9. NO REGISTRATION RIGHTS. 
 The Company may, but shall not be
obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law. The Company shall not be obligated to take any affirmative action in order to cause the sale of Shares under this Agreement to comply with any
law. 
 SECTION 10. RESTRICTIONS ON TRANSFER. 
 (a) Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been registered under the Securities Act or have been registered or qualified under the
securities laws of any state, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of appropriate legends on stock certificates or the imposition of stop-transfer
instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act, the securities laws of any state or any other law. 

(b) Market Stand-Off. In connection with any underwritten public offering by the Company of its equity securities pursuant to an
effective registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short sale of, loan, hypothecate, pledge, offer,
grant or sell any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing transactions with respect to, any Shares acquired
under this Agreement without the prior written consent of the Company or its underwriters. Such restriction (the “Market Stand-Off”) shall be in effect for such period of time following the date of the final prospectus for the offering as
may be requested by the Company or such underwriters. In no event, however, shall such period exceed 180 days. The Market Stand-Off shall in any event terminate two years after the date of the Company’s initial public offering. In the event of
the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities without receipt of consideration, any new, substituted
or additional securities which are by reason of such transaction distributed with respect to any Shares subject to the Market Stand-Off, or into which such Shares thereby become convertible, shall immediately be subject to the Market Stand-Off. In
order to enforce the 

  
 7 

 
Market Stand-Off, the Company may impose stop-transfer instructions with respect to the Shares acquired under this Agreement until the end of the applicable stand-off period. The Company’s
underwriters shall be beneficiaries of the agreement set forth in this Subsection (b). This Subsection (b) shall not apply to Shares registered in the public offering under the Securities Act, and the Optionee or a Transferee shall be
subject to this Subsection (b) only if the directors and officers of the Company are subject to similar arrangements. 

(c) Investment Intent at Grant. The Optionee represents and agrees that the Shares to be acquired upon exercising this option will
be acquired for investment, and not with a view to the sale or distribution thereof. 
 (d) Investment Intent at
Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act but an exemption is available which requires an investment representation or other representation, the Optionee shall represent and agree at
the time of exercise that the Shares being acquired upon exercising this option are being acquired for investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are deemed necessary or
appropriate by the Company and its counsel. 
 (e) Legends. All certificates evidencing Shares purchased under this
Agreement shall bear the following legend: 
 “THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED,
ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY
CERTAIN RIGHTS OF FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE SHARES. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.” 

All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following legend (and such other
restrictive legends as are required or deemed advisable under the provisions of any applicable law): 
 “THE SHARES
REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE
COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.” 
 (f) Removal of Legends. If, in the opinion of
the Company and its counsel, any legend placed on a stock certificate representing Shares sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing
the same number of Shares but without such legend. 

  
 8 

 (g) Administration. Any determination by the Company and its counsel in connection
with any of the matters set forth in this Section 10 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION
11. ADJUSTMENT OF SHARES. 
 In the event of any transaction described in Section 8(a) of the Plan, the terms of this
option (including, without limitation, the number and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan. In the event that the Company is a party to a merger or
consolidation, this option shall be subject to the agreement of merger or consolidation, as provided in Section 8(b) of the Plan. 

SECTION 12. MISCELLANEOUS PROVISIONS. 
 (a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder with respect to any Shares subject to this option until the Optionee
or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5. 
 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the Optionee any right to continue in Service for any period of specific duration or interfere with or otherwise
restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which rights are hereby expressly reserved by each, to terminate his or her Service at any time and for any reason,
with or without cause. 
 (c) Notice. Any notice required by the terms of this Agreement shall be given in writing. It
shall be deemed effective upon (i) personal delivery, (ii) deposit with the United States Postal Service or with the Royal Mail, by registered or certified mail, with postage and fees prepaid or (iii) deposit with Federal Express
Corporation, with shipping charges prepaid. Notice shall be addressed to the Company at its principal executive office and to the Optionee at the address that he or she most recently provided to the Company in accordance with this
Subsection (c). 
 (d) Entire Agreement. The Notice of Stock Option Grant, this Agreement and the Plan constitute
the entire contract between the parties hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether express or implied) which relate to the subject
matter hereof. 
 (e) Choice of Law. This Agreement shall be governed by, and construed in accordance with, the laws of
the State of Delaware, as such laws are applied to contracts entered into and performed in such State. 
 (f) Data
Protection 
 (i) In order to facilitate the administration of the Plan, it will be necessary for the Company (or its
payroll administrators) to collect, hold and process certain personal information about the 

  
 9 

 Optionee and to transfer this data to the Company and to certain third parties such as
brokers with whom the Optionee may elect to deposit any share capital under the Plan. The Optionee consents to the Company (or its payroll administrators) collecting, holding and processing its personal data and transferring this data to any other
third parties insofar as is reasonably necessary to implement, administer and manage the Plan. 
 (ii) Where the transfer is to
be to a destination outside the European Economic Area, the Company shall take reasonable steps to ensure that the Optionee’s personal data continues to be adequately protected and securely held. 

(iii) The Optionee understands that the Optionee may, at any time, view its personal data, require any necessary corrections to it or
withdraw the consents herein in writing by contacting the Human Resources Department of the Company (but acknowledges that without the use of such data it may not be practicable for the Company to administer the Optionee’s involvement in the
Plan in a timely fashion or at all and this may be detrimental to the Optionee). 
 SECTION 13. DEFINITIONS. 

(a) “Agreement” shall mean this Stock Option Agreement. 

(b) “Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a
Committee has been appointed, such Committee. 
 (c) “Committee” shall mean a committee of the Board of
Directors, as described in Section 2 of the Plan. 
 (d) “Company” shall mean Imperva, Inc., a Delaware
corporation. 
 (e) “Date of Grant” shall mean the date specified in the Notice of Stock Option Grant, which
date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day of the Optionee’s Service. 
 (f) “Disability” shall mean that the Optionee is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which has
lasted, or can expected to last, for a continuous period of not less than 12 months, at the Company’s or the Subsidiary’s, as applicable, discretion. 
 (g) “Employee” shall mean any individual who is an employee of the Company, a Parent or a Subsidiary. An individual shall not cease to be an “Employee” upon the transfer of such
individual’s employment among the Company and its Subsidiaries. 

  
 10 

 (h) “Exercise Price” shall mean the amount for which one Share may be
purchased upon exercise of this option, as specified in the Notice of Stock Option Grant. 
 (i) “Fair Market
Value” shall mean the fair market value of a Share, as determined by the Board of Directors in good faith. Such determination shall be conclusive and binding on all persons. 

(j) “Immediate Family” shall mean any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling,
mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law and shall include adoptive relationships. 
 (k) “Joint Election” shall have the meaning set out in Section 4(g) of the Stock Option Agreement. 
 (l) “Notice of Stock Option Grant” shall mean the document so entitled to which this Agreement is attached. 
 (m) “Optionee” shall mean the person named in the Notice of Stock Option Grant. 
 (n) “Option Tax Liability”(as defined in Section 4(e) of the Stock Option Agreement. 
 (o) “Parent” shall mean any corporation (other than the Company) in an unbroken chain of corporations ending with the Company, if each of the corporations other than the Company owns
stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 
 (p) “Plan” shall mean the UK Sub-Plan of the Imperva, Inc. 2003 Stock Plan, as in effect on the Date of Grant. 
 (q) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares with respect to which this option is being exercised. 

(r) “Right of First Refusal” shall mean the Company’s right of first refusal described in
Section 7.”Secondary NIC Liability” (as defined in Section 4(g) of the Stock Option Agreement. 
 (s)
“Section 431 Election” shall mean the election set out in Appendix 1 of the Stock Option Agreement (or such other form as proscribed by HM Revenue & Customs from time to time). 

(t) “Securities Act” shall mean the Securities Act of 1933, as amended. 

(u) “Service” shall mean service as an Employee. 

(v) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the Plan (if applicable).

  
 11 

 (w) “Stock” shall mean the Common Stock of the Company, with a par value of
$0.0001 per Share. 
 (x) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain
of corporations beginning with the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other
corporations in such chain. 
 (y) “Transferee” shall mean any person to whom the Optionee has directly or
indirectly transferred any Share acquired under this Agreement. 
 (z) “Transfer Notice” shall mean the notice
of a proposed transfer of Shares described in Section 7. 

  
 12 

 APPENDIX 1 

 

	
	 
	Joint Election under s431 ITEPA 2003 for full or partial
disapplication of
	 Chapter 2 Income Tax (Earnings and Pensions) Act 2003
  

 

 One Part Election 

 

	1.	Between 

  

			
	 the Employee
	 	[insert name of employee]
		
	 whose National Insurance Number is
	 	[insert NINO]
		
	 and
	 	
		
	 the Company (who is the Employee’s employer)
	 	Imperva UK Limited
		
	 of Company Registration Number
	 	05918482

  

	2.	Purpose of Election 

 This joint election
is made pursuant to section 431(1) or 431(2) Income Tax (Earnings and Pensions) Act 2003 (ITEPA) and applies where employment-related securities, which are restricted securities by reason of section 423 ITEPA, are acquired. 

The effect of an election under section 431(1) is that, for the relevant Income Tax and NIC purposes, the employment-related securities and their market
value will be treated as if they were not restricted securities and that sections 425 to 430 ITEPA do not apply. An election under section 431(2) will ignore one or more of the restrictions in computing the charge on acquisition. Additional Income
Tax will be payable (with PAYE and NIC where the securities are Readily Convertible Assets). 
  

	
	Should the value of the securities fall following the acquisition, it is possible that Income Tax/NIC that
would have arisen because of any future chargeable event (in the absence of an election) would have been less than the Income Tax/NIC due by reason of this election. Should this be the case, there is no Income Tax/NIC relief available under Part 7
of ITEPA 2003; nor is it available if the securities acquired are subsequently transferred, forfeited or revert to the original owner.

  
 13 

	3.	Application 

 This joint election is made
not later than 14 days after the date of acquisition of the securities by the employee and applies to: 
  

			
	Number of securities	  	[insert number]
		
	Description of securities	  	Common Stock of Imperva, Inc.
		
	Name of issuer of securities	  	Imperva, Inc.

 To be acquired by the Employee after
[date of grant] under the terms of the UK Sub-Plan of the Imperva, Inc. 2003 Stock Plan (as amended July 28 2006.). 
  

	4.	Extent of Application 

 This election
disapplies S.431(1) ITEPA: All restrictions attaching to the securities. 
  

	5.	Declaration 

 This election will become
irrevocable upon the later of its signing or the acquisition (and each subsequent acquisition) of employment-related securities to which this election applies. 
 In signing this joint election, we agree to be bound by its terms as stated above. 
  

			
	  
	    	    /    /            
	Signature (Employee)	    	Date
		
	  
	    	    /    /            
	Signature (for and on behalf of the company)	    	Date
		
	  
	    	
	Position in company	    	

  
 14 

			
	 DATED
	  	2011

 IMPERVA, INC. 
 - and - 

IMPERVA UK LIMITED 
 - and - 
 OPTIONEE 

 
  
 JOINT ELECTION 
 In relation to the UK Sub-plan of the Imperva, Inc. 2003
Stock Plan 
  
  

 JOINT ELECTION 
 BETWEEN 
  

	(1)	IMPERVA, INC. whose office is at 3400 Bridge Parkway, Suite 200, Redwood Shores, CA 94065, United States of America (the “Company”);

  

	(2)	IMPERVA UK LIMITED (company registration number 05918482) whose registered office is at 37 Broadhurst Gardens, London, NW6 3QT (the “Employer”);and

  

	(3)	[INSERT NAME OF OPTIONEE] of [insert address of Optionee] (the “Optionee” which shall include his executors or administrators in the case of his
death). 

 INTRODUCTION 
  

	(A)	The Optionee may be granted, from time to time, options (each one an “Option”) to acquire shares of common stock in the Company (the “Shares”) on
terms set out in stock option agreements issued pursuant to the UK Sub-Plan of the Imperva, Inc. 2003 Stock Plan (as amended July 28 2006) (the “Plan”). 

 

	(B)	This joint election (the “Joint Election”) is in an approved format. The exercise, cancellation, release, assignment or other disposal of an Option is subject
to the Optionee entering into this Joint Election. 

  

	(C)	The Optionee is currently an employee of the Employer. 

  

	(D)	The exercise, release, cancellation, assignment or other disposal of an Option (a “Trigger Event”) (whether in whole or in part), may result in the Employer
or, if and to the extent that there is a change in law, any other company or person who becomes the secondary contributor for National Insurance contributions (“NIC”) purposes at the time of such Trigger Event having a liability to pay
employer’s (secondary) Class I NICs (or any tax or social security premiums which may be introduced in substitution or in addition thereto) in respect of such Trigger Event. 

 

	(E)	Where the context so admits, any reference in this Joint Election: 

  

	 	(i)	to the singular number shall be construed as if it referred also to the plural number and vice versa; 

 

	 	(ii)	to the masculine gender shall be construed as though it referred also to the feminine gender; 

 

	 	(iii)	to a statute or statutory provision shall be construed as if it referred also to that statute or provision as for the time being amended or re-enacted; and

  

	 	(iv)	Shares means shares of common stock of the Company. 

 AGREED TERMS 
  

	1.	Joint Election 

  

	1.1	It is a condition of the exercise, cancellation, release, assignment or other disposal of an Option that the Optionee has entered into this Joint Election with the
Employer. 

  

	1.2	The Optionee, the Employer and the Company elect to transfer the liability (the “Liability”) for all of the employer’s (secondary) Class I NICs referred
to in (D) above and charged on payments or other benefits arising on a Trigger Event and treated as remuneration and earnings pursuant to section 4(4)(a) of the Social Security Contributions and Benefit Act 1992 (“SSCBA”) to the
Optionee. This Joint Election is made pursuant to an arrangement authorised by paragraph 3B, Schedule 1 of the SSCBA. 

  

	2.	Restriction on registration until liability paid by Optionee 

 The Optionee hereby agrees that no Shares shall be registered in his name until he has met the Liability as a result of a Trigger Event in accordance with this Joint Election. 

 

	3.	Payment 

  

	3.1	Where, in relation to an Option, the Optionee is liable, or is in accordance with current practice at the date of the Trigger Event believed by the Employer to be
liable (where it is believed that the shares under option are readily convertible assets), to account to the HM Revenue & Customs for the Liability, the Optionee and the Employer agree that, upon receipt of the funds to meet the Liability
from the Optionee, such funds to meet the Liability shall be paid to the Collector of Taxes or other relevant taxation authority by the Employer on the Optionee’s behalf within 14 days of the end of the income tax month in which the gain
on the Option was made (“the 14 day period”) and for the purposes of securing payment of the Liability the Optionee will on the occurrence of a Trigger Event:: 

 

	 	(a)	pay to the Employer a cash amount equal to the Liability; and/or 

  

	 	(b)	suffer a deduction from salary or other remuneration due to the Optionee such deduction being in an amount not exceeding the Liability; and/or 

 

	 	(c)	at the request of the Employer enter into such arrangement or arrangements necessary or expedient with such person or persons (including the appointment of a nominee on
behalf of the Optionee) to effect the sale of Shares acquired through the exercise of the Option to cover all or any part of the Liability and use the proceeds to pay the Employer a cash amount equal to the Liability. 

 

	3.2	The Optionee hereby irrevocably appoints the Company and the Employer as his attorney with full power in his name to execute or sign any document and do any other thing
which the Company or the Employer may consider desirable for the purpose of giving effect to the Optionee satisfying the Liability under clause 3.1 and satisfying any penalties and interest under clause 3.4, save that this power of
attorney shall be limited as set out below. The Optionee further agrees to ratify and confirm whatever the Company and the Employer may lawfully do as his attorney. The power of attorney granted in this clause shall be limited to the grant of a
right for the Employer and/or the Company to enter into such an arrangement (as envisaged by clause 3.1(c)) on the Optionee’s behalf to sell sufficient of the Shares issued or transferred to the Optionee on the exercise of the Option to
meet the Liability pursuant to clause 3.1 and any penalty or interest arising under clause 3.4. 

  
 2 

	3.3	The Employer shall pass all monies it has collected from the Optionee in respect of the Liability to the Collector of Taxes by no later than 14 days after the end
of the income tax month in which the Trigger Event occurred. The Employer shall be responsible for any penalties or interest that may arise in respect of the Liability from any failure on its part after it has collected any monies from the Optionee
to pass the Liability to the Collector of Taxes within the said 14 days period. 

  

	3.4	If the Optionee has failed to pay all or part of the Liability to the Employer within the 14 day period the Optionee hereby indemnifies the Employer against such
penalties or interest that the Employer would have to pay in respect of the late payment of all or part of the Liability to the Collector of Taxes. 

  

	4.	Termination of Joint Election 

  

	4.1	This Joint Election shall cease to have effect on the occurrence of any of the following: 

 

	 	(a)	if the terms of this Joint Election are satisfied in the reasonable opinion of the Company, the Employer and the Optionee; 

 

	 	(b)	if the Company, the Employer and the Optionee jointly agree in writing to revoke this Joint Election; 

 

	 	(c)	if the HM Revenue & Customs withdraws approval of this Joint Election so far as it relates to share options covered by the Joint Election but not yet granted;

  

	 	(d)	if the Options lapse or no Option is otherwise capable of being exercised pursuant to the UK Sub-Plan of the Plan; and/or 

 

	 	(e)	if the Company and/or the Employer serve notice on the Optionee that the Joint Election is to cease to have effect. 

 

	5.	Further assurance 

  

	5.1	The Company, the Employer and the Optionee shall do all such things and execute all such documents as may be necessary or desirable to ensure that this Joint Election
complies with all relevant legislation and/or HM Revenue & Customs requirements. 

  

	5.2	The Optionee shall notify the Employer in writing of any Trigger Event which occurs in relation to an Option within three days of such Trigger Event.

  

	6.	Secondary Contributor 

The Employer enters into this Joint Election on its own behalf and on behalf of the Company, or, if and to the extent that there is a
change in law, any other company or person who is or becomes a secondary contributor for NIC purposes in respect of an Option. It is agreed that the Employer can enforce the terms of this Joint Election against the Optionee on behalf of any such
company. 
  

	7.	Binding Effect 

  

	7.1	The Optionee agrees to be bound by the terms of this Joint Election and for the avoidance of doubt the Optionee shall continue to be bound by the terms of this Joint
Election regardless of which country the Optionee is working in when the Liability arises and regardless of whether the Optionee is an employee of the Employer when the Liability arises. 

 

	7.2	 The Employer and the Company agree to be bound by the terms of this Joint Election and for the avoidance of doubt the Employer and the Company shall
continue to be 

  
 3 

 
bound by the terms of this Joint Election regardless of which country the Optionee is working in when the Liability arises and regardless of whether the Optionee is an employee of the Employer
when the Liability arises. 
  

	8.	Governing Law 

 This Joint
Election shall be governed by and construed in accordance with English law and the parties irrevocably submit to the non-exclusive jurisdiction of the English Courts to settle any claims, disputes or issues which may arise out of this deed. This
Joint Election has been executed and delivered as a deed on the date written above. 
  

					
	 SIGNED as a DEED
	 		  	
	 by IMPERVA, INC.
 acting by the under-mentioned
 person(s) acting on the authority

of the Company in accordance
 with the laws of
the territory of
 its incorporation:
	 		  	
			
		 		  	Authorised signatory
			
		 		  	Authorised signatory
			
	 SIGNED as a DEED

by IMPERVA UK LIMITED

acting by:
	 		  	
			
		 		  	Director
			
		 		  	Director/Secretary
			
	 SIGNED as a Deed

by [insert name of Optionee]

 
 in the presence of:
	 		  	
			
	 Witness signature:
	 		  	
			
	 Name:
	 		  	
			
	 Address:
	 		  	
			
	 Occupation:
	 		  	

  
 4 

 UK SUB-PLAN OF THE
IMPERVA, INC. 2003 STOCK PLAN (AS 

AMENDED JULY 28 2006) 
 NOTICE OF STOCK OPTION EXERCISE 
 (UK OPTIONEE) 
 You must sign this Notice on
Page 3 before submitting it to the Company. 
 OPTIONEE INFORMATION: 

 

									
	Name:	 	  
	 		  	NIC Number:	  	  

					
	Address:	 	  
	 		  	Employee Number:	  	  

					
		 	  
	 		  		  	

 OPTION INFORMATION: 

 

			
	Date of Grant:                  , 200    	  	Type of Stock Option:
		
	Exercise Price per Share: $        	  	 ̈ UK Unapproved
		
	Total number of shares of Common Stock of Imperva, Inc. (the “Company”) covered by option:
                	  	

 EXERCISE INFORMATION: 

Number of shares of Common Stock of the Company for which option is being exercised now:
                    . (These shares are referred to below as the “Purchased Shares.”) 

Total Exercise Price for the Purchased Shares: $         

Payment of Option Tax Liability and Secondary NIC Liability (where applicable):
                     
 Form of
payment enclosed for Total Exercise Price and Option Tax Liability and Secondary NIC Liability [check all that apply]: 
  

	 ̈	Cheque for $        , payable to “Imperva, Inc.” 

 

	 ̈	Certificate(s) for                      shares of Common
Stock of the Company that I have owned for at least six months. (These shares will be valued as of the date this notice is received by the Company.) 

  

	 ̈	Attestation Form covering                      shares of
Common Stock of the Company. (These shares will be valued as of the date this notice is received by the Company.) 

 Tax elections
enclosed and signed. 

			
	  ̈       Joint
Election

	
	  ̈       Section 431
Election

	
	 Name(s) in which the Purchased Shares should be registered

	
	  ̈       In my name
only

		
	  ̈       Other
	 	  

 

			
	The certificate for the Purchased Shares	 	  

	 should be sent to the following address:
	 	  

		 	  

		 	  

 REPRESENTATIONS AND ACKNOWLEDGMENTS OF THE OPTIONEE: 

 

	1.	I represent and warrant to the Company that I am acquiring and will hold the Purchased Shares for investment for my account only, and not with a view to, or for resale
in connection with, any “distribution” of the Purchased Shares within the meaning of the Securities Act of 1933, as amended (the “Securities Act”). 

 

	2.	I understand that the Purchased Shares have not been registered under the Securities Act by reason of a specific exemption therefrom and that the Purchased Shares must
be held indefinitely, unless they are subsequently registered under the Securities Act or I obtain an opinion of counsel (in form and substance satisfactory to the Company and its counsel) that registration is not required. 

 

	3.	I acknowledge that the Company is under no obligation to register the Purchased Shares. 

 

	4.	I am aware of the adoption of Rule 144 by the Securities and Exchange Commission under the Securities Act, which permits limited public resales of securities acquired
in a non-public offering, subject to the satisfaction of certain conditions. These conditions include (without limitation) that certain current public information about the issuer is available, that the resale occurs only after the holding period
required by Rule 144 has been satisfied, that the sale occurs through an unsolicited “broker’s transaction” and that the amount of securities being sold during any three-month period does not exceed specified limitations. I
understand that the conditions for resale set forth in Rule 144 have not been satisfied and that the Company has no plans to satisfy these conditions in the foreseeable future. 

 

	5.	I will not sell, transfer or otherwise dispose of the Purchased Shares in violation of the Securities Act, the Securities Exchange Act of 1934, or the rules promulgated
thereunder, including Rule 144 under the Securities Act. 

  

	6.	I acknowledge that I have received and had access to such information as I consider necessary or appropriate for deciding whether to invest in the Purchased Shares and
that I had an opportunity to ask questions and receive answers from the Company regarding the terms and conditions of the issuance of the Purchased Shares. 

 

	7.	 I am aware that my investment in the Company is a speculative investment that has limited liquidity and is subject to the risk of complete loss. I am
able, without impairing my financial condition, to 

  
 2 

	 	 
hold the Purchased Shares for an indefinite period and to suffer a complete loss of my investment in the Purchased Shares. 

 

	8.	I acknowledge that the Purchased Shares remain subject to the Company’s right of first refusal and the market stand-off (sometimes referred to as the
“lock-up”), all in accordance with the applicable Notice of Stock Option Grant and Stock Option Agreement. 

  

	9.	I acknowledge that I am acquiring the Purchased Shares subject to all other terms of the Notice of Stock Option Grant and Stock Option Agreement.

  

	10.	I acknowledge that the Company has encouraged me to consult my own adviser to determine the tax consequences of acquiring the Purchased Shares at this time.

  

	11.	I agree to seek the consent of my spouse to the extent required by the Company to enforce the foregoing. 

 

					
	SIGNATURE:	  	DATE:	  	
			
	  
	  	  
	  	

  
 3 

 STOCK TRANSFER AGREEMENT (UK) 

THIS STOCK TRANSFER AGREEMENT is entered into as of
                ,         , by IMPERVA, INC., a Delaware corporation (the
“Company”),                      (the “Transferor”) and
                     (the “Transferee”). 
 RECITALS: 
 A. The Transferor is record owner of certain
shares of the Common Stock of the Company and desires to transfer                      shares (the “Shares”) of the Company’s
Common Stock to the Transferee. 
 B. The Transferee desires to acquire all of the Transferor’s right, title and interest
to the Shares. 
 AGREEMENT: 
 1. The Transferor represents that the Transferor has good title to the Shares. Each of Transferor and Transferee represents that (a) they have all necessary power and authority to enter into and
perform this Agreement and (b) this Agreement constitutes their valid and binding obligation. 
 2. The Transferor hereby
transfers and assigns to the Transferee all of the Transferor’s right, title and interest to the Shares for no consideration. 
 3. The Transferee acknowledges that the Transferor purchased the Shares pursuant to a Notice of Grant and Stock Option Agreement between the Company and the Transferor (the “Stock Option
Agreement”). The Transferee agrees to be bound by all of the terms and provisions of the Stock Option Agreement, as if the Transferee were a party thereto. Without limiting the foregoing, the Shares shall be subject to (a) the
Company’s right of first refusal under Section 7 of the Stock Option Agreement and (b) the restrictions on transfer in Section 10 of the Stock Option Agreement, including the market stand-off provisions of Section 10(b) of
the Stock Option Agreement. 
 4. The Transferor and the Transferee each represent that that the Transferee either (a) is a
member of the Transferor’s immediate family or (b) is a trust established by the Transferor for the benefit of the Transferor and/or one or more members of the Transferor’s immediate family, and that the transfer of the Shares from
the Transferor to the Transferee is expressly permitted by Section 7(e) of the Stock Option Agreement. In reliance on the foregoing representation, the Company acknowledges that its right of first refusal under Section 7 of the Stock
Option Agreement does not apply to the transfer of the Shares from the Transferor to the Transferee. However, the Company’s right of first refusal under Section 7 of the Stock Option Agreement will apply to the Shares in the hands of the
Transferee. 

 5. The Transferee represents that the Transferee is acquiring the Shares for investment for
an indefinite period for the Transferee’s own account, not as a nominee or agent and not with a view to the sale or distribution of any part thereof, and the Transferee has no present intention of selling, granting participation in or otherwise
distributing the same. The Transferee further represents that the Transferee does not have any contract, undertaking, agreement or arrangement with any person to sell, transfer or grant participation to such person or other third person with respect
to any of the Shares. 
 6. The Transferee understands that the Shares are subject to the federal securities laws and applicable
regulations and that the Shares may be resold without registration under the Securities Act of 1933, as amended (the “Act”), only in certain limited circumstances. In this connection, the Transferee represents that the Transferee
(a) is familiar with Securities and Exchange Commission Rule 144 as presently in effect, (b) understands the resale limitations imposed by Rule 144 and by the Act and (c) understands that the Company has no obligation, and
no current plans, to satisfy the current-information requirements of Rule 144. 
 7. If the Transferee is not a United
States person, the Transferee represents that the Transferee is satisfied as to the full observance of the laws of the Transferee’s jurisdiction in connection with any invitation to acquire the Shares, including (a) the legal requirements
within the Transferee’s jurisdiction for the purchase of the Shares, (b) any foreign exchange restrictions applicable to such purchase, (c) any governmental or other consents that may need to be obtained and (d) the income tax
and other tax consequences, if any, that may be relevant to the purchase, holding, redemption, sale or transfer of the Shares. The Transferee further represents that the Transferee’s acquisition and continued beneficial ownership of the Shares
will not violate any applicable securities or other laws of the Transferee’s jurisdiction. 
 8. The Transferee authorizes
the Company to issue stop-transfer instructions to its stock transfer agent or, as long as it acts as its own transfer agent, to make a stop-transfer notation in its appropriate records whenever necessary or appropriate to ensure that the Transferee
complies with this Agreement and, to the extent applicable, the Stock Option Agreement. The Transferee acknowledges that the Company is a third-party beneficiary of this Agreement and may take all actions that are necessary and appropriate to
enforce this Agreement and, to the extent applicable, the Stock Option Agreement. 
 9. The parties agree to execute such
further instruments and to take such further action as may reasonably be necessary to carry out the intent of this Agreement and the Stock Option Agreement. 
 10. This Agreement shall be governed by, and construed in accordance with, the laws of the State of Delaware, as such laws are applied to contracts entered into and performed in such State. 

11. This Agreement shall be binding upon the transferees, successors, assigns and legal representatives of the parties hereto.

 12. This Agreement may be executed in counterparts with the same force and effect as if each of the signatories had executed
the same instrument. 

  
 2 

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

			
	IMPERVA, INC.
		
	By:	 	  

		
	Name:	 	  

		
	Title:	 	  

	
	TRANSFEROR:
	
	  

	
	TRANSFEREE:
	
	  

  
 3 

 IMPERVA, INC. 

2003 STOCK PLAN 
 The following terms and conditions will apply in the case of grants to French residents and to those individuals who are otherwise subject to the laws of France. 

Unless otherwise defined herein, the terms defined in the Imperva Inc. 2003 Stock Plan (the “Plan”) and the Addendum relating to terms
and conditions for French Option Grants (the “Addendum”) shall have the same defined meanings in this Stock Option Agreement (the “Agreement”) and in the Notice of Stock Option Grant. To the extent that any term is
defined in both the Plan and the Addendum, for purposes of this Agreement and the Notice of Stock Option Grant, the definitions in the Addendum shall prevail. In the event of any inconsistency between the Plan, this Agreement, the Notice of Stock
Option Grant and the Addendum, the Addendum shall prevail. 
 NOTICE OF STOCK
OPTION GRANT (INSTALLMENT) – FRENCH 
 OPTIONEES

 You have been granted the following option to purchase shares of the Common Stock of Imperva, Inc. (the
“Company”) subject to the terms and conditions of the Plan, the Addendum, the Stock Option Agreement and this Notice of Stock Option Grant, as follows: 
  

			
	 Name of Optionee:
	  	
		
	 Total Number of Shares:
	  	
		
	 Type of Option:
	  	Nonstatutory Stock Option (NSO)
		
	 Exercise Price Per Share:
	  	$0.
		
	 Date of Grant:
	  	
		
	 Date Exercisable:
	  	This option may be exercised with respect to 25% of the Shares subject to this option when the Optionee completes 12 months of continuous Service after the Vesting Commencement
Date. This option may be exercised with respect to an additional 6.25% of the Shares subject to this option when the Optionee completes each 3-month period of continuous Service thereafter.
		
	 Vesting Commencement Date:
	  	
		
	 Expiration Date:
	  	 This option expires earlier if the Optionee’s Service terminates earlier, as provided in Section 6 of the Stock Option
Agreement.

 By your signature and the signature of the Company’s representative below, you and the Company agree that
this option is granted under and governed by the terms and conditions of the 
  

 
2003 Stock Plan, the Addendum and the Stock Option Agreement, both of which are attached to and made a part of this document. 

 

							
	OPTIONEE:	 		 	IMPERVA, INC.
				
	  
	 		 	By:	 	  

				
		 		 	Title:	 	  

 THE OPTION GRANTED PURSUANT TO THIS AGREEMENT AND THE SHARES ISSUABLE UPON THE EXERCISE THEREOF HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT
SUCH REGISTRATION IS NOT REQUIRED. 
 IMPERVA, INC. 

2003 STOCK PLAN: 
 STOCK OPTION AGREEMENT 
 SECTION 1. GRANT
OF OPTION. 
 Option. The Company grants to the Optionee on the Date of Grant the option to purchase at the Exercise
Price the number of Shares set forth in the Notice of Stock Option Grant and subject to the terms and conditions of the Plan and the Addendum, which are incorporated herein by reference. Subject to Section 11(b) of the Plan, in the event of a
conflict between the terms and conditions of the Plan and this Stock Option Agreement, the terms and conditions of the Plan shall prevail; provided, however, in the event of any inconsistency between the Plan and the Addendum, the Addendum shall
prevail. 
 This Option is intended to be a French-qualified Option that qualifies for the favorable tax and social security regime in France,
as set forth in the French Addendum. Certain events may affect the status of the Option as a French-qualified Option and the Option may be disqualified in the future. The Company does not make any undertaking or representation to maintain the
qualified status of the French-qualified Option during the life of the Option, and Optionee will not be entitled to any damages if the Option no longer qualifies as a French-qualified Option. 

(a) The Exercise Price is agreed to be at least 100% of the Fair Market Value per Share on the Date of Grant (110% of Fair Market Value
if Section 3(b) of the Plan applies). This option is intended to be an ISO, a Nonstatutory Option, or a Nonstatutory Option described in Section 13, as provided in the Notice of Stock Option Grant. 

(b) $100,000 Limitation. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it shall be deemed to be
an NSO to the extent (and only to the extent) required by the $100,000 annual limitation under Section 422(d) of the Code. 

(c) Stock Plan and Defined Terms. This option is granted pursuant to the Plan and the Addendum, a copy of which the Optionee
acknowledges having received. The provisions of the Plan and the Addendum are incorporated into this Agreement by this reference. Any interpretation of this Agreement will be made in accordance with the Plan and the Addendum, but in the event there
is any contradiction between the provisions of this Agreement 

 
the Plan and the Addendum, the provisions of the Addendum will prevail. Capitalized terms are defined in Section 13 of this Agreement. 

SECTION 2. RIGHT TO EXERCISE. 
 (a) Exercisability. Subject to Subsection (b) below and the other conditions set forth in this Agreement, the Addendum and the Plan, all or part of this option may be exercised prior to its
expiration at the time or times set forth in the Notice of Stock Option Grant. 
 (b) Stockholder Approval. Any other
provision of this Agreement notwithstanding, no portion of this option shall be exercisable at any time prior to the approval of the Plan and the Addendum by the Company’s stockholders. 
 SECTION 3. NO TRANSFER OR ASSIGNMENT OF OPTION. 
 Except as otherwise
provided in this Agreement, the Plan and the Addendum this option and the rights and privileges conferred hereby shall not be sold, pledged or otherwise transferred (whether by operation of law or otherwise) and shall not be subject to sale under
execution, attachment, levy or similar process. 
 SECTION 4. EXERCISE PROCEDURES. 

(a) Notice of Exercise. The Optionee or the Optionee’s representative may exercise this option by giving written notice to the
Company pursuant to Section 12(c). The notice shall specify the election to exercise this option, the number of Shares for which it is being exercised and the form of payment. The person exercising this option shall sign the notice. In the
event that this option is being exercised by the representative of the Optionee, the notice shall be accompanied by proof (satisfactory to the Company) of the representative’s right to exercise this option. The Optionee or the Optionee’s
representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under Section 5 for the full amount of the Purchase Price. 
 (b) Issuance of Shares. After receiving a proper notice of exercise, the Company shall cause to be issued one or more certificates evidencing the Shares for which this option has been exercised.
Such Shares shall be registered (i) in the name of the person exercising this option, (ii) in the names of such person and his or her spouse as community property or as joint tenants with the right of survivorship or (iii) with the
Company’s consent, in the name of a revocable trust. The Company shall cause such certificates to be delivered to or upon the order of the person exercising this option. 
 (c) Withholding Taxes. In the event that the Company determines that it is required to withhold any tax as a result of the exercise of this option, the Optionee, as a condition to the exercise of
this option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding requirements. The Optionee shall also make arrangements satisfactory to the Company to enable it to satisfy any withholding requirements that
may arise in connection with the disposition of Shares purchased by exercising this option. 

  
 2 

 SECTION 5. PAYMENT FOR STOCK. 

(a) Cash. All or part of the Purchase Price may be paid in cash or cash equivalents. 

(b) Surrender of Stock. At the discretion of the Board of Directors, all or any part of the Purchase Price may be paid by
surrendering, or attesting to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and shall be valued at their Fair Market Value on the date when this option is
exercised. The Optionee shall not surrender, or attest to the ownership of, Shares in payment of the Purchase Price if such action would cause the Company to recognize compensation expense (or additional compensation expense) with respect to this
option for financial reporting purposes. 
 (c) Exercise/Sale. At the discretion of the Board of Directors, if Stock is
publicly traded, all or part of the Purchase Price and any withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver
all or part of the sales proceeds to the Company. 
 (d) Exercise/Pledge. At the discretion of the Board of Directors, if
Stock is publicly traded, all or part of the Purchase Price and any withholding taxes may be paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to pledge Shares to a securities broker or lender approved by the
Company, as security for a loan, and to deliver all or part of the loan proceeds to the Company. 
 SECTION 6. TERM AND EXPIRATION.

 (a) Basic Term. This option shall in any event expire on the expiration date set forth in the Notice of Stock
Option Grant, which date is 10 years after the Date of Grant (five years after the Date of Grant if this option is designated as an ISO in the Notice of Stock Option Grant and Section 3(b) of the Plan applies). 

(b) Termination of Service (Except by Death). If the Optionee’s Service terminates for any reason other than death, then this
option shall expire on the earliest of the following occasions: 
 (i) The expiration date determined pursuant to
Subsection (a) above; 
 (ii) The date 3 months after the termination of the Optionee’s Service for any
reason other than Disability, or such later date as the Board of Directors may determine; or 
 (iii) The date 6
months after the termination of the Optionee’s Service by reason of Disability, or such other date as the Board of Directors may determine (but not less than six months after the termination of the Optionee’s Service by reason of
Disability). 

  
 3 

 The Optionee may exercise all or part of this option at any time before its expiration under the preceding
sentence, but only to the extent that this option had become exercisable before the Optionee’s Service terminated. When the Optionee’s Service terminates, this option shall expire immediately with respect to the number of Shares for which
this option is not yet exercisable. In the event that the Optionee dies after termination of Service but before the expiration of this option, all or part of this option may be exercised (prior to expiration) by the executors or administrators of
the Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s Service
terminated. 
 (c) Death of the Optionee. If the Optionee dies while in Service, then this option shall expire on the
earlier of the following dates: 
 (i) The expiration date determined pursuant to Subsection (a) above; or

 (ii) The date 12 months after the Optionee’s death. 

All or part of this option may be exercised at any time before its expiration under the preceding sentence by the executors or administrators of the
Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that this option had become exercisable before the Optionee’s death. When
the Optionee dies, this option shall expire immediately with respect to the number of Shares for which this option is not yet exercisable. 
 (d) Leaves of Absence. For any purpose under this Agreement, Service shall be deemed to continue while the Optionee is on a bona fide leave of absence, if such leave was approved by the
Company in writing and if continued crediting of Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). 
 (e) Notice Concerning ISO Treatment. Even if this option is designated as an ISO in the Notice of Stock Option Grant, it ceases to qualify for favorable tax treatment as an ISO to the extent that
it is exercised: 
 (f) More than three months after the date when the Optionee ceases to be an Employee for any reason other
than death or permanent and total disability (as defined in Section 22(e)(3) of the Code); 
 (g) More than 12 months after
the date when the Optionee ceases to be an Employee by reason of permanent and total disability (as defined in Section 22(e)(3) of the Code); or 
 (h) More than three months after the date when the Optionee has been on a leave of absence for 90 days, unless the Optionee’s reemployment rights following such leave were guaranteed by statute or by
contract. 

  
 4 

 SECTION 7. RIGHT OF FIRST REFUSAL. 

(a) Right of First Refusal. In the event that the Optionee proposes to sell, pledge or otherwise transfer to a third party any
Shares acquired under this Agreement, or any interest in such Shares, the Company shall have the Right of First Refusal with respect to all or any portion of such Shares. If the Optionee desires to transfer Shares acquired under this Agreement, the
Optionee shall give a written Transfer Notice to the Company describing fully the proposed transfer, including the number of Shares proposed to be transferred, the proposed transfer price, the name and address of the proposed Transferee and proof
satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal or state securities laws. The Transfer Notice shall be signed both by the Optionee and by the proposed Transferee and must constitute a binding
commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all or any portion of the Shares on the terms of the proposal described in the Transfer Notice (subject, however, to any change in such terms
permitted under Subsection (b) below) by delivery of a notice of exercise of the Right of First Refusal within 30 days after the date when the Transfer Notice was received by the Company. 

(b) Transfer of Shares. If the Company fails to exercise its Right of First Refusal within 30 days after the date when it
received the Transfer Notice, the Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice on the terms and conditions described in the
Transfer Notice, provided that any such sale is made in compliance with applicable federal and state securities laws and not in violation of any other contractual restrictions to which the Optionee is bound. Any proposed transfer on terms and
conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the Right of First Refusal and shall require compliance with the procedure described in
Subsection (a) above. If the Company exercises its Right of First Refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days after the date when the Company received the
Transfer Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be made in a form other than cash or cash
equivalents paid at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer Notice. 

(c) Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company with or into another
entity, any other corporate reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a recapitalization or a
similar transaction affecting the Company’s outstanding securities, any securities or other property (including cash or cash equivalents that are paid other than as an ordinary cash dividends) that are by reason of such transaction exchanged
for, or distributed with respect to, any Shares subject to this Section 7 shall immediately be subject to the Right of First Refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made
to the number and/or class of the Shares subject to this Section 7. 

  
 5 

 (d) Termination of Right of First Refusal. Any other provision of this Section 7
notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no Right of First Refusal, and the Optionee shall have no obligation to comply
with the procedures prescribed by Subsections (a) and (b) above. 
 (e) Permitted Transfers. This
Section 7 shall not apply to (i) a transfer by beneficiary designation, will or intestate succession or (ii) a transfer to one or more members of the Optionee’s Immediate Family or to a trust established by the Optionee for the
benefit of the Optionee and/or one or more members of the Optionee’s Immediate Family, provided in either case that the Transferee agrees in writing on a form prescribed by the Company to be bound by all provisions of this Agreement. If the
Optionee transfers any Shares acquired under this Agreement, either under this Subsection (e) or after the Company has failed to exercise the Right of First Refusal, then this Agreement shall apply to the Transferee to the same extent as to the
Optionee. 
 (f) Termination of Rights as Stockholder. If the Company makes available, at the time and place and
in the amount and form provided in this Agreement, the consideration for the Shares to be purchased in accordance with this Section 7, then after such time the person from whom such Shares are to be purchased shall no longer have any rights as
a holder of such Shares (other than the right to receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the applicable provisions hereof, whether or not the
certificate(s) therefor have been delivered as required by this Agreement. 
 (g) Assignment of Right of First
Refusal. The Company may freely assign the Company’s Right of First Refusal, in whole or in part. Any person who accepts an assignment of the Right of First Refusal from the Company shall assume all of the Company’s rights and
obligations under this Section 7. 
 SECTION 8. LEGALITY OF INITIAL ISSUANCE. 

No Shares shall be issued upon the exercise of this option unless and until the Company has determined that: 

(a) It and the Optionee have taken any actions required to register the Shares under the Securities Act or to perfect an
exemption from the registration requirements thereof; 
 (b) Any applicable listing requirement of any stock
exchange or other securities market on which Stock is listed has been satisfied; 
 (c) Any other applicable
provision of federal, state or foreign law has been satisfied; and 
 (d) The Purchase Price has been received by
the Company. 

  
 6 

 SECTION 9. NO REGISTRATION RIGHTS. 

The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable
law. The Company shall not be obligated to take any affirmative action in order to cause the sale of Shares under this Agreement to comply with any law. 
 SECTION 10. RESTRICTIONS ON TRANSFER. 
 (a) Securities Law
Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been registered under the Securities Act or have been registered or qualified under the securities laws of any state, the Company at its discretion may
impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of appropriate legends on stock certificates or the imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions
are necessary or desirable in order to achieve compliance with the Securities Act, the securities laws of any state or any other law. 
 (b) Market Stand-Off. In connection with any underwritten public offering by the Company of its equity securities pursuant to an effective registration statement filed under the Securities Act,
including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short sale of, loan, hypothecate, pledge, offer, grant or sell any option or other contract for the purchase of,
purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing transactions with respect to, any Shares acquired under this Agreement without the prior written consent of the
Company or its underwriters. Such restriction (the “Market Stand-Off”) shall be in effect for such period of time following the date of the final prospectus for the offering as may be requested by the Company or such underwriters. In no
event, however, shall such period exceed 180 days. The Market Stand-Off shall in any event terminate two years after the date of the Company’s initial public offering. In the event of the declaration of a stock dividend, a spin-off, a stock
split, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities without receipt of consideration, any new, substituted or additional securities which are by reason of such
transaction distributed with respect to any Shares subject to the Market Stand-Off, or into which such Shares thereby become convertible, shall immediately be subject to the Market Stand-Off. In order to enforce the Market Stand-Off, the Company may
impose stop-transfer instructions with respect to the Shares acquired under this Agreement until the end of the applicable stand-off period. The Company’s underwriters shall be beneficiaries of the agreement set forth in this
Subsection (b). This Subsection (b) shall not apply to Shares registered in the public offering under the Securities Act, and the Optionee or a Transferee shall be subject to this Subsection (b) only if the directors and officers of
the Company are subject to similar arrangements. 
 (c) Investment Intent at Grant. The Optionee represents and agrees
that the Shares to be acquired upon exercising this option will be acquired for investment, and not with a view to the sale or distribution thereof. 
 (d) Investment Intent at Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act but an exemption is available which requires

  
 7 

 
an investment representation or other representation, the Optionee shall represent and agree at the time of exercise that the Shares being acquired upon exercising this option are being acquired
for investment, and not with a view to the sale or distribution thereof, and shall make such other representations as are deemed necessary or appropriate by the Company and its counsel. 

(e) Legends. All certificates evidencing Shares purchased under this Agreement shall bear the following legend: 

“THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE
WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE
SHARES. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.” 

All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following legend (and such other
restrictive legends as are required or deemed advisable under the provisions of any applicable law): 
 “THE SHARES
REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE
COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT REQUIRED.” 
 (f) Removal of Legends. If, in the opinion of
the Company and its counsel, any legend placed on a stock certificate representing Shares sold under this Agreement is no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing
the same number of Shares but without such legend. 
 (g) Administration. Any determination by the Company and its
counsel in connection with any of the matters set forth in this Section 10 shall be conclusive and binding on the Optionee and all other persons. 
 SECTION 11. ADJUSTMENT OF SHARES. 
 In the event of any transaction
described in Section 8(a) of the Plan, the terms of this option (including, without limitation, the number and kind of Shares subject to this option and the Exercise Price) shall be adjusted as set forth in Section 8(a) of the Plan and 9
of the Addendum. In the event that the Company is a party to a merger or consolidation, this option shall be subject to the agreement of merger or consolidation, as provided in Section 8(b) of the Plan. 

  
 8 

 SECTION 12. MISCELLANEOUS PROVISIONS. 

(a) Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder
with respect to any Shares subject to this option until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Purchase Price pursuant to Sections 4 and 5.

 (b) No Retention Rights. Nothing in this option or in the Plan shall confer upon the Optionee any right to continue in
Service for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which rights are hereby expressly reserved
by each, to terminate his or her Service at any time and for any reason, with or without cause. 
 (c) Notice. Any notice
required by the terms of this Agreement shall be given in writing. It shall be deemed effective upon (i) personal delivery, (ii) deposit with the United States Postal Service, by registered or certified mail, with postage and fees prepaid
or (iii) deposit with Federal Express Corporation, with shipping charges prepaid. Notice shall be addressed to the Company at its principal executive office and to the Optionee at the address that he or she most recently provided to the Company
in accordance with this Subsection (c). 
 (d) Entire Agreement. The Notice of Stock Option Grant, this Agreement,
the Plan and the Addendum constitute the entire contract between the parties hereto with regard to the subject matter hereof. They supersede any other agreements, representations or understandings (whether oral or written and whether express or
implied) which relate to the subject matter hereof. 
 (e) Choice of Law. This Agreement shall be governed by, and
construed in accordance with, the laws of the State of Delaware, as such laws are applied to contracts entered into and performed in such State. 
 SECTION 13. ENGLISH LANGUAGE. 
 Optionee has received the terms and
conditions of this Agreement and any other related communications, and Optionee consents to having received these documents in English. If Optionee has received this Agreement or any other document related to the Plan or the Addendum translated into
a language other than English and if the translated version is different than the English version, the English version will control. 

Je reconnais expressément par les présentes, que je comprends et parle parfaitement la langue anglaise, que j’ai eu le temps
nécessaire pour entièrement lire et parfaitement comprendre le présent contrat ainsi que l’ensemble des documents et annexes s’y afférant et que j’ai eu l’opportunité de m’en entretenir
avec les conseils de mon choix. (I represent that I perfectly speak and understand English language, that I had enough time to review and understand this agreement as all the related documents and appendix and that I had the
opportunity to obtain advice from the counsels of my choice). 

  
 9 

 SECTION 14. DEFINITIONS. 
 (a) “Agreement” shall mean this Stock Option Agreement. 
 (b)
“Board of Directors” shall mean the Board of Directors of the Company, as constituted from time to time or, if a Committee has been appointed, such Committee. 
 (c) “Code” shall mean the Internal Revenue Code of 1986, as amended. 
 (d) “Committee” shall mean a committee of the Board of Directors, as described in Section 2 of the Plan. 
 (e) “Company” shall mean Imperva, Inc., a Delaware corporation. 

(f) “Consultant” shall mean a person who performs bona fide services for the Company, a Parent or a Subsidiary as a
consultant or advisor, excluding Employees and Outside Directors. 
 (g) “Date of Grant” shall mean the date
specified in the Notice of Stock Option Grant, which date shall be the later of (i) the date on which the Board of Directors resolved to grant this option or (ii) the first day of the Optionee’s Service. 

(h) “Disability” shall mean that the Optionee is unable to engage in any substantial gainful activity by reason of any
medically determinable physical or mental impairment which has lasted, or can expected to last, for a continuous period of not less than 12 months, at the Company’s or the Subsidiary’s, as applicable, discretion. 

(i) “Employee” shall mean any individual who is a common-law employee of the Company, a Parent or a Subsidiary. An
individual shall not cease to be an “Employee” upon the transfer of such individual’s employment among the Company and its Subsidiaries. 
 (j) “Exercise Price” shall mean the amount for which one Share may be purchased upon exercise of this option, as specified in the Notice of Stock Option Grant. 

(k) “Fair Market Value” shall mean the fair market value of a Share, as determined by the Board of Directors in good
faith. Such determination shall be conclusive and binding on all persons. 
 (l) “Immediate Family” shall mean
any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, sibling, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law or sister-in-law and shall include adoptive relationships. 

(m) “ISO” shall mean an employee incentive stock option described in Section 422(b) of the Code. 

  
 10 

 (n) “Notice of Stock Option Grant” shall mean the document so entitled to
which this Agreement is attached. 
 (o) “NSO” shall mean a stock option not described in Sections 422(b)
or 423(b) of the Code (including a stock option described in Section 13). 
 (p) “Optionee” shall mean the
person named in the Notice of Stock Option Grant. 
 (q) “Outside Director” shall mean a member of the Board of
Directors who is not an Employee. 
 (r) “Parent” shall mean any corporation (other than the Company) in an
unbroken chain of corporations ending with the Company, if each of the corporations other than the Company owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain.

 (s) “Plan” shall mean the Imperva, Inc. 2003 Stock Plan, as in effect on the Date of Grant. 

(t) “Purchase Price” shall mean the Exercise Price multiplied by the number of Shares with respect to which this option
is being exercised. 
 (u) “Right of First Refusal” shall mean the Company’s right of first refusal
described in Section 7. 
 (v) “Securities Act” shall mean the Securities Act of 1933, as amended.

 (w) “Service” shall mean service as an Employee, Outside Director or Consultant. 

(x) “Share” shall mean one share of Stock, as adjusted in accordance with Section 8 of the Plan (if applicable).

 (y) “Stock” shall mean the Common Stock of the Company, with a par value of $0.0001 per Share. 

(z) “Subsidiary” shall mean any corporation (other than the Company) in an unbroken chain of corporations beginning with
the Company, if each of the corporations other than the last corporation in the unbroken chain owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain. 

(aa) “Transferee” shall mean any person to whom the Optionee has directly or indirectly transferred any Share acquired
under this Agreement. 
 (bb) “Transfer Notice” shall mean the notice of a proposed transfer of Shares
described in Section 7. 

  
 11 

							
	OPTIONEE:	 		 	IMPERVA, INC.
				
	  
	 		 	By:	 	  

				
		 		 	Title:	 	  

  
 12 

 IMPERVA INC. 
 OPTION AGREEMENT 
 Made as of the      day of
            , 2010 
  

			
	BETWEEN:	  	Imperva Inc.
		
		  	A Delaware corporation
		
		  	(hereinafter the “Company”)
		
		  	on the one part
		
	AND:	  	Name:
		
		  	I.D. No.
		
		  	Address:
		
		  	(hereinafter the “Optionee”)
		
		  	on the other part

  

			
	WHEREAS	  	On February 24, 2003, the Company duly adopted and the Board approved an Appendix to the 2003 Stock Plan (the “Plan”) forming an integral part of the Plan, a
copy of which is attached as Exhibit A hereto, forming an integral part hereof; and -
		
	WHEREAS	  	Pursuant to the Plan, the Company has decided to grant Options to purchase Shares of the Company to the Optionee, and the Optionee has agreed to such grant, subject to all the
terms and conditions as set forth in the Plan and as provided herein;

 NOW, THEREFORE, it is agreed as follows:

  
 1 

	1.	Preamble and Definitions 

  

	 	1.1	The preamble to this agreement constitutes an integral part hereof. 

  

	 	1.2	Unless otherwise defined herein, capitalized terms used herein shall have the meaning ascribed to them in the Plan. 

 

	2.	Grant of Options 

  

	 	2.1	The Company hereby grants to the Optionee the number of Options as set forth in Exhibit B hereto, each Option shall be exercisable for one Share, upon payment of
the Exercise Price as set forth in Exhibit B, subject to the terms and the conditions as set forth in the Plan and as provided herein. 

  

	 	2.2	The Optionee is aware that the Company intends in the future to issue additional shares and to grant additional options to various entities and individuals, as the
Company in its sole discretion shall determine. 

  

	3.	Period of Option and Conditions of Exercise 

  

	 	3.1	The terms of this Option Agreement shall commence on the date of grant and terminate at the expiration date, or at the time at which the Option expires pursuant to the
terms of the Plan or pursuant to this Option Agreement. 

  

	 	3.2	Options may be exercised only to purchase whole Shares, and in no case may a fraction of a Share be purchased. If any fractional Share would be deliverable upon
exercise, such fraction shall be rounded up one-half or less, or otherwise rounded down, to the nearest whole number. 

  

	4.	Adjustments  

Notwithstanding anything to the contrary in Section 6(e) of the Plan and in addition thereto, if in any such Change in Control as
described in Section 6(e) of the Plan, the surviving corporation or its parent does not agree to assume or substitute for the Options, all unexercised Options shall be expired as of the date of the Change in Control. 

 

	5.	Vesting; Period of Exercise 

 Subject to the provisions of the Plan, Options shall vest and become exercisable according to the vesting dates set forth in Exhibit B hereto, provided that the Optionee is an Employee of or
providing services to the Company and/or its Affiliates on the applicable vesting date. 
 All unexercised Options granted to the
Optionee shall terminate and shall no longer be exercisable on the expiration date. 
  

	6.	Exercise of Options 

  

	 	6.1	 Notice of Exercise. The Optionee or the Optionee’s representative may exercise this option by giving written notice to the Company pursuant
to Section 14.8 herein. The notice shall specify the election to exercise Options, the number of Shares for which the Options are being exercised and the form of payment. The person exercising the Options shall sign the notice. In the event
that Options are being exercised by the 

  
 2 

	 	 
representative of the Optionee, the notice shall be accompanied by proof (satisfactory to the Company) of the representative’s right to exercise the Options. The Optionee or the
Optionee’s representative shall deliver to the Company, at the time of giving the notice, payment in a form permissible under Section 7 herein, for the full amount of the Exercise Price. The Company will notify the Trustee of any exercise
of any Approved 102 Options. 

  

	 	6.2	Issuance of Shares. After receiving a proper notice of exercise, the Company shall cause to be issued one or more certificates evidencing the Shares for which
Options have been exercised, provided that the Shares issued upon exercise of Approved 102 Options shall be registered in the name of the Trustee for the benefit of the Optionee and the share certificate of such Shares shall be deposited in the
hands of the Trustee. 

  

	 	6.2	In order for the Company to issue Shares upon the exercise of any of the Options, the Optionee hereby agrees to sign any and all documents required by any applicable
law and/or by the Company’s incorporation documents. 

  

	 	6.3	Until the consummation of an initial public offering, such Stock shall be voted by an irrevocable proxy (the “Proxy”) pursuant to the directions of the
Board, such Proxy to be assigned to the person or persons designated by the Board. Such person or persons designated by the Board shall be indemnified and held harmless by the Company against any cost or expense (including counsel fees) reasonably
incurred by him/her, or any liability (including any sum paid in settlement of a claim with the approval of the Company) arising out of any act or omission to act in connection with the voting of such Proxy unless arising out of such member’s
own fraud or bad faith, to the extent permitted by applicable law. Such indemnification shall be in addition to any rights of indemnification the person(s) may have as a director or otherwise under the Company’s incorporation documents, any
agreement, any vote of shareholders or disinterested directors, insurance policy or otherwise. Without derogating from the above, with respect to Approved 102 Options, such shares shall be voted in accordance with the provisions of Section 102
and any rules, regulations or orders promulgated thereunder. 

  

	 	6.4	The Company shall not be obligated to issue any Shares upon the exercise of an Option if such issuance, in the opinion of the Company, might constitute a violation by
the Company of any provision of law. 

  

	7.	Payment For Stock 

  

	 	7.1	Cash. All or part of the Exercise Price may be paid in cash or cash equivalents. If payment shall be made in New Israeli Shekels, it shall be made at the
Representative Rate of Exchange for the U.S. dollar last published by the Bank of Israel prior to the date of actual payment. 

  

	 	7.2	 Surrender of Stock. At the discretion of the Board of Directors, all or any part of the Exercise Price may be paid by surrendering, or attesting
to the ownership of, Shares that are already owned by the Optionee. Such Shares shall be surrendered to the Company in good form for transfer and shall be valued at their Fair Market Value on the date when this option is exercised. The Optionee
shall not surrender, or attest to 

  
 3 

	 	 
the ownership of, Shares in payment of the Exercise Price if such action would cause the Company to recognize compensation expense (or additional compensation expense) with respect to this option
for financial reporting purposes. 

  

	 	7.3	Exercise/Sale. At the discretion of the Board of Directors and if Stock is publicly traded, all or part of the Exercise Price and any withholding taxes may be
paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to a securities broker approved by the Company to sell Shares and to deliver all or part of the sales proceeds to the Company. Notwithstanding the foregoing, in
the case of the exercise of Approved 102 Options subject to the provisions of Appendix A of the Plan, any proceeds must be delivered to the Trustee for the benefit of the Optionee. 

 

	 	7.4	Exercise/Pledge. At the discretion of the Board of Directors and if Stock is publicly traded, all or part of the Exercise Price and any withholding taxes may be
paid by the delivery (on a form prescribed by the Company) of an irrevocable direction to pledge Shares to a securities broker or lender approved by the Company, as security for a loan, and to deliver all or part of the loan proceeds to the Company.
Notwithstanding the foregoing, in the case of the exercise of Approved 102 Options subject to the provisions of Appendix A of the Plan, any proceeds must be delivered to the Trustee for the benefit of the Optionee 

 

	8.	Term And Expiration. 

  

	 	8.1	Basic Term. Options shall in any event expire on the expiration date set forth in Exhibit B. 

 

	 	8.2	Termination of Service (Except by Death). If the Optionee’s Service terminates for any reason other than death, then this option shall expire on the
earliest of the following occasions: 

  

	 	(i)	The expiration date determined pursuant to Exhibit B; 

  

	 	(ii)	The date 3 (three) months after the termination of the Optionee’s Service for any reason other than Disability, or such later date as the Board of Directors may
determine; or 

  

	 	(iii)	The date 6 months after the termination of the Optionee’s Service by reason of Disability, or such other date as the Board of Directors may determine (but not less
than six months after the termination of the Optionee’s Service by reason of Disability). 

 For avoidance of
any doubt, if termination of Service is for Cause, any outstanding unexercised Option (whether vested or non-vested), will immediately expire and terminate, and the Optionee shall not have any right in connection to such outstanding Options

  
 4 

 For the purpose of this Section “Cause” means, (i) conviction of any
felony involving moral turpitude or affecting the Company; (ii) any refusal to carry out a reasonable directive of the chief executive officer, the Board or the Optionee’s direct supervisor, which involves the business of the Company or
its Affiliates and was capable of being lawfully performed; (iii) embezzlement of funds of the Company or its Affiliates; (iv) any breach of the Optionee’s fiduciary duties or duties of care of the Company; including without
limitation disclosure of confidential information of the Company; and (v) any conduct (other than conduct in good faith) reasonably determined by the Board to be materially detrimental to the Company. 

The Optionee may exercise all or part of his Options at any time before their expiration under the preceding sentence, but only to the
extent that the Options had become exercisable before the Optionee’s Service terminated. When the Optionee’s Service terminates, the Options shall expire immediately with respect to the number of Shares for which this option is not yet
vested and exercisable. In the event that the Optionee dies after termination of Service but before the expiration of this option, all or part of the Options may be exercised (prior to expiration) by the executors or administrators of the
Optionee’s estate or by any person who has acquired this option directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that Options had become exercisable before the Optionee’s Service
terminated. 
  

	 	8.3	Death of the Optionee. If the Optionee dies while in Service, then the Options shall expire on the earlier of the following dates: 

 

	 	(i)	The expiration date determined pursuant to Section 8.1 above; or 

  

	 	(ii)	The date 12 months after the Optionee’s death. 

 All or part of the Options may be exercised at any time before the expiration under the preceding sentence by the executors or administrators of the Optionee’s estate or by any person who has
acquired the Options directly from the Optionee by beneficiary designation, bequest or inheritance, but only to the extent that the Options had become vested and exercisable before the Optionee’s death. When the Optionee dies, the Options shall
expire immediately with respect to the number of Shares for which Options are not yet exercisable. 
  

	 	8.4	Leaves of Absence. For any purpose under this Agreement, Service shall be deemed to continue while the Optionee is on a bona fide leave of absence, if such leave
was approved by the Company in writing and if continued crediting of Service for such purpose is expressly required by the terms of such leave or by applicable law (as determined by the Company). 

 

	9.	Right of First Refusal 

  

	 	9.1	 Right of First Refusal. Unless otherwise determined by the Committee, until such time as the Company shall complete an IPO, an Optionee shall
not have the right to sell Shares issued upon the exercise of an Option within six (6) months and one day of the date of exercise of such Option or issuance of such Shares. In the event that the Optionee proposes to sell, pledge or otherwise
transfer to a third party any Shares acquired under this Agreement, or any interest in such Shares, the Company shall 

  
 5 

	 	 
have the right of first refusal with respect to all or any portion of such Shares. If the Optionee desires to transfer Shares acquired under this Agreement, the Optionee shall give a written
transfer notice (the “Transfer Notice”) to the Company describing fully the proposed transfer, including the number of Shares proposed to be transferred, the proposed transfer price, the name and address of the proposed transferee
(the “Transferee”) and proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable federal or state securities laws, including Israeli Securities Laws, if applicable. The Transfer Notice
shall be signed both by the Optionee and by the proposed Transferee and must constitute a binding commitment of both parties to the transfer of the Shares. The Company shall have the right to purchase all or any portion of the Shares on the terms of
the proposal described in the Transfer Notice (subject, however, to any change in such terms permitted under Section 9.2 below) by delivery of a notice of exercise of the right of first refusal within 30 days after the date when the Transfer
Notice was received by the Company. 

  

	 	9.2	Transfer of Shares. If the Company fails to exercise its right of first refusal within 30 days after the date when it received the Transfer Notice, the
Optionee may, not later than 90 days following receipt of the Transfer Notice by the Company, conclude a transfer of the Shares subject to the Transfer Notice on the terms and conditions described in the Transfer Notice, provided that any such
sale is made in compliance with applicable federal and state securities laws, including Israeli Securities Laws, if applicable, and not in violation of any other contractual restrictions to which the Optionee is bound. Any proposed transfer on terms
and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the Optionee, shall again be subject to the right of first refusal and shall require compliance with the procedure described in
Section 9.1 above. If the Company exercises its right of first refusal, the parties shall consummate the sale of the Shares on the terms set forth in the Transfer Notice within 60 days after the date when the Company received the Transfer
Notice (or within such longer period as may have been specified in the Transfer Notice); provided, however, that in the event the Transfer Notice provided that payment for the Shares was to be made in a form other than cash or cash equivalents paid
at the time of transfer, the Company shall have the option of paying for the Shares with cash or cash equivalents equal to the present value of the consideration described in the Transfer Notice. 

 

	 	9.3	Additional or Exchanged Securities and Property. In the event of a merger or consolidation of the Company with or into another entity, any other corporate
reorganization, a stock split, the declaration of a stock dividend, the declaration of an extraordinary dividend payable in a form other than stock, a spin-off, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting
the Company’s outstanding securities, any securities or other property (including cash or cash equivalents that are paid other than as an ordinary cash dividends) that are by reason of such transaction exchanged for, or distributed with respect
to, any Shares subject to this Section 9 shall immediately be subject to the right of first refusal. Appropriate adjustments to reflect the exchange or distribution of such securities or property shall be made to the number and/or class of the
Shares subject to this Section 9. 

  

	 	9.4	 Termination of Right of First Refusal. Any other provision of this Section 9

  
 6 

	 	 
notwithstanding, in the event that the Stock is readily tradable on an established securities market when the Optionee desires to transfer Shares, the Company shall have no right of first
refusal, and the Optionee shall have no obligation to comply with the procedures prescribed by Sections 9.1 and 9.2 above. 

  

	 	9.5	Permitted Transfers. This Section 9 shall not apply to a transfer by beneficiary designation, will or intestate succession provided that the transferee
agrees in writing on a form prescribed by the Company to be bound by all provisions of this Agreement and the Plan. If the Optionee transfers any Shares acquired under this Agreement, either under this Section 9.5 or after the Company has
failed to exercise the right of first refusal, then this Agreement shall apply to the transferee to the same extent as to the Optionee. 

  

	 	9.6	Termination of Rights as Stockholder. If the Company makes available, at the time and place and in the amount and form provided in this Agreement, the
consideration for the Shares to be purchased in accordance with this Section 9, then after such time the person from whom such Shares are to be purchased shall no longer have any rights as a holder of such Shares (other than the right to
receive payment of such consideration in accordance with this Agreement). Such Shares shall be deemed to have been purchased in accordance with the applicable provisions hereof, whether or not the certificate(s) therefor have been delivered as
required by this Agreement. 

  

	 	9.7	Assignment of Right of First Refusal. The Company may freely assign the Company’s right of first refusal, in whole or in part. Any person who accepts an
assignment of the right of first refusal from the Company shall assume all of the Company’s rights and obligations under this Section 9. 

  

	10.	Legality of Initial Issuance. 

 No Shares shall be issued upon the exercise of Options unless and until the Company has determined that: 
  

	 	10.1	It and the Optionee have taken any actions required to register the Shares under the Securities Act of 1933 as amended (the “Securities Act”) or to
perfect an exemption from the registration requirements thereof; 

  

	 	10.2	Any applicable listing requirement of any stock exchange or other securities market on which Stock is listed has been satisfied; 

 

	 	10.3	Any other applicable provision of federal, state or foreign law has been satisfied; 

 

	 	10.4	All applicable withholding taxes with respect to 102 Options and 3(i) Options have been paid and, with respect to Approved 102 Options, evidence of such payment shall
have been received by the Trustee and the Company; and 

  

	 	10.5	The exercise Price has been received by the Company. 

  
 7 

	11.	No Registration Rights 

 The Company may, but shall not be obligated to, register or qualify the sale of Shares under the Securities Act or any other applicable law. The Company shall not be obligated to take any affirmative
action in order to cause the sale of Shares under this Agreement to comply with any law. 
  

	12.	Restrictions on Transfer of Options and Shares 

  

	 	12.1	The transfer of Options and the transfer of Shares to be issued upon exercise of the Options shall be subject to the limitations set forth in the Plan, in the
Company’s incorporation documents, in any shareholders’ agreement to which the holders of ordinary shares of the Company are bound, or in any applicable law including securities law of any jurisdiction. 

 

	 	12.2	With respect to any Approved 102 Option, subject to the provisions of Section 102 and any rules or regulation or orders or procedures promulgated thereunder, an
Optionee shall not sell or release from trust any Share received upon the exercise of an Approved 102 Option and/or any share received subsequently following any realization of rights, including without limitation, bonus shares, until the lapse of
the Holding Period required under Section 102 of the Ordinance. Notwithstanding the above, if any such sale or release occurs during the Holding Period, the sanctions under Section 102 of the Ordinance and under any rules or regulation or
orders or procedures promulgated thereunder shall apply to and shall be borne by such Optionee. 

  

	 	12.3	With respect to Unapproved 102 Option, if the Optionee ceases to be employed by the Company or any Affiliate, the Optionee shall extend to the Company and/or its
Affiliate a security or guarantee for the payment of tax due at the time of sale of Shares, all in accordance with the provisions of Section 102 and the rules, regulation or orders promulgated thereunder. 

 

	 	12.4	Securities Law Restrictions. Regardless of whether the offering and sale of Shares under the Plan have been registered under the Securities Act or have been
registered or qualified under the securities laws of any state, the Company at its discretion may impose restrictions upon the sale, pledge or other transfer of such Shares (including the placement of appropriate legends on stock certificates or the
imposition of stop-transfer instructions) if, in the judgment of the Company, such restrictions are necessary or desirable in order to achieve compliance with the Securities Act, the securities laws of any state or any other law.

  

	 	12.5	 Market Stand-Off. In connection with any underwritten public offering by the Company of its equity securities pursuant to an effective
registration statement filed under the Securities Act, including the Company’s initial public offering, the Optionee or a Transferee shall not directly or indirectly sell, make any short sale of, loan, hypothecate, pledge, offer, grant or sell
any option or other contract for the purchase of, purchase any option or other contract for the sale of, or otherwise dispose of or transfer, or agree to engage in any of the foregoing transactions with respect to, any Shares acquired under this
Agreement without the prior written consent of the Company or its underwriters. Such restriction (the “Market Stand-

  
 8 

	 	 
Off”) shall be in effect for such period of time following the date of the final prospectus for the offering as may be requested by the Company or such underwriters. In the event of
the declaration of a stock dividend, a spin-off, a stock split, an adjustment in conversion ratio, a recapitalization or a similar transaction affecting the Company’s outstanding securities without receipt of consideration, any new, substituted
or additional securities which are by reason of such transaction distributed with respect to any Shares subject to the Market Stand-Off, or into which such Shares thereby become convertible, shall immediately be subject to the Market Stand-Off. In
order to enforce the Market Stand-Off, the Company may impose stop-transfer instructions with respect to the Shares acquired under this Agreement until the end of the applicable stand-off period. 

 

	 	12.6	The Optionee shall not dispose of any Shares in transactions which violate, in the opinion of the Company, any applicable laws, rules and regulations.

  

	 	12.7	Investment Intent at Grant. The Optionee represents and agrees that the Shares to be acquired upon exercising this option will be acquired for investment, and
not with a view to the sale or distribution thereof. 

  

	 	12.8	Investment Intent at Exercise. In the event that the sale of Shares under the Plan is not registered under the Securities Act but an exemption is available which
requires an investment representation or other representation, the Optionee shall represent and agree at the time of exercise that the Shares being acquired upon exercising this option are being acquired for investment, and not with a view to the
sale or distribution thereof, and shall make such other representations as are deemed necessary or appropriate by the Company and its counsel. 

  

	 	12.9	Legends. All certificates evidencing Shares purchased under this Agreement shall bear the following legend: 

“THE SHARES REPRESENTED HEREBY MAY NOT BE SOLD, ASSIGNED, TRANSFERRED, ENCUMBERED OR IN ANY MANNER DISPOSED OF, EXCEPT IN COMPLIANCE
WITH THE TERMS OF A WRITTEN AGREEMENT BETWEEN THE COMPANY AND THE REGISTERED HOLDER OF THE SHARES (OR THE PREDECESSOR IN INTEREST TO THE SHARES). SUCH AGREEMENT GRANTS TO THE COMPANY CERTAIN RIGHTS OF FIRST REFUSAL UPON AN ATTEMPTED TRANSFER OF THE
SHARES. THE SECRETARY OF THE COMPANY WILL UPON WRITTEN REQUEST FURNISH A COPY OF SUCH AGREEMENT TO THE HOLDER HEREOF WITHOUT CHARGE.” 
 All certificates evidencing Shares purchased under this Agreement in an unregistered transaction shall bear the following legend (and such other restrictive legends as are required or deemed advisable
under the provisions of any applicable law): 
 “THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES
ACT OF 1933, AS AMENDED, AND MAY NOT BE SOLD, PLEDGED, OR OTHERWISE TRANSFERRED WITHOUT AN EFFECTIVE REGISTRATION THEREOF UNDER SUCH ACT OR AN OPINION OF COUNSEL, SATISFACTORY TO THE COMPANY AND ITS COUNSEL, THAT SUCH REGISTRATION IS NOT
REQUIRED.” 

  
 9 

	 	12.10	Removal of Legends. If, in the opinion of the Company and its counsel, any legend placed on a stock certificate representing Shares sold under this Agreement is
no longer required, the holder of such certificate shall be entitled to exchange such certificate for a certificate representing the same number of Shares but without such legend. 

 

	 	12.11	The Optionee agrees that the Company shall have the authority to endorse upon the certificate or certificates representing the Shares such legends referring to the
foregoing restrictions, and any other applicable restrictions as it may deem appropriate (which do not violate the Optionee’s rights according to this Option Agreement). 

 

	 	12.12	Administration. Any determination by the Company and its counsel in connection with any of the matters set forth in this Section 12 shall be conclusive and
binding on the Optionee and all other persons. 

  

	13.	Taxes; Indemnification 

  

	 	13.1	Any tax consequences arising from the grant or exercise of any Option, from the payment for Shares covered thereby or from any other event or act (of the Company and/or
its Affiliates, the Trustee or the Optionee), hereunder, shall be borne solely by the Optionee. The Optionee, as a condition to the exercise any Option, shall make arrangements satisfactory to the Company to enable it to satisfy all withholding
requirements The Company and/or its Affiliates and/or the Trustee shall withhold taxes according to the requirements under the applicable laws, rules, and regulations, including withholding taxes at source. Furthermore, the Optionee hereby agrees to
indemnify the Company and/or its Affiliates and/or the Trustee and hold them harmless against and from any and all liability for any such tax or interest or penalty thereon, including without limitation, liabilities relating to the necessity to
withhold, or to have withheld, any such tax from any payment made to the Optionee. 

  

	 	13.2	The Optionee will not be entitled to receive from the Company and/or the Trustee any Shares allocated or issued upon the exercise of Options prior to the full payments
of the Optionee’s tax liabilities arising from Options which were granted to him and/or Shares issued upon the exercise of Options. For the avoidance of doubt, neither the Company nor the Trustee shall be required to release any share
certificate to the Optionee until all payments required to be made by the Optionee have been fully satisfied. 

  

	 	13.3	The receipt of the Options and the acquisition of the Shares to be issued upon the exercise of the Options may result in tax consequences. THE OPTIONEE IS ADVISED TO
CONSULT A TAX ADVISER WITH RESPECT TO THE TAX CONSEQUENCES OF RECEIVING OR EXERCISING THIS OPTION OR DISPOSING OF THE SHARES. 

  

	 	13.4	 With respect to Approved 102 Options, the Optionee hereby acknowledges that he is familiar with the provisions of Section 102 and the regulations
and rules promulgated thereunder, including without limitations the type of Option granted hereunder and the tax implications applicable to such grant. The Optionee accepts the provisions of the trust agreement signed between the Company and the
Trustee, 

  
 10 

	 	 
attached as Exhibit D hereto, and agrees to be bound by its terms. 

  

	14.	Miscellaneous 

  

	 	14.1	No Obligation to Exercise Options. The grant and acceptance of these Options imposes no obligation on the Optionee to exercise it. 

 

	 	14.2	Confidentiality. The Optionee shall regard the information in this Option Agreement and its exhibits attached hereto as confidential information and the Optionee
shall not reveal its contents to anyone except when required by law or for the purpose of gaining legal or tax advice. 

  

	 	14.3	Rights as a Stockholder. Neither the Optionee nor the Optionee’s representative shall have any rights as a stockholder with respect to any Shares subject to
the Options until the Optionee or the Optionee’s representative becomes entitled to receive such Shares by filing a notice of exercise and paying the Exercise Price pursuant to Sections 6 and 7. 

 

	 	14.4	Continuation of Employment or Service. Nothing in this option or in the Plan shall confer upon the Optionee any right to continue in Service for any period of
specific duration or interfere with or otherwise restrict in any way the rights of the Company (or any Parent or Subsidiary employing or retaining the Optionee) or of the Optionee, which rights are hereby expressly reserved by each, to terminate his
or her Service at any time and for any reason, with or without cause. 

  

	 	14.5	Entire Agreement. Subject to the provisions of the Plan, to which this Option Agreement is subject, this Option Agreement, together with the exhibits hereto,
constitute the entire agreement between the Optionee and the Company with respect to Options granted hereunder, and supersedes all prior agreements, understandings and arrangements, oral or written, between the Optionee and the Company with respect
to the subject matter hereof. 

  

	 	14.6	Failure to Enforce - Not a Waiver. The failure of any party to enforce at any time any provisions of this Option Agreement or the Plan shall in no way be
construed to be a waiver of such provision or of any other provision hereof. 

  

	 	14.7	Provisions of the Plan. The Options provided for herein are granted pursuant to the Plan and said Options and this Option Agreement are in all respects governed
by the Plan and subject to all of the terms and provisions of the Plan. 

 Any interpretation of this Option
Agreement will be made in accordance with the Plan but in the event there is any contradiction between the provisions of this Option Agreement and the Plan, the provisions of the Option Agreement will prevail. 

 

	 	14.7	Binding Effect. The Plan and this Option Agreement shall be binding upon the heirs, executors, administrators and successors of the parties hereof.

  

	 	14.8	 Notices. All notices or other communications given or made hereunder shall be in writing and shall be delivered or mailed by registered mail
with postage and fees prepaid or deposit with Federal Express Corporation, with shipping charges prepaid or delivered by email or facsimile with written confirmation of receipt to the Optionee and/or to the Company at the addresses shown on the
letterhead above, or at such other place as the Company may designate by written notice to the Optionee. The Optionee is responsible for notifying the Company in writing of any change in the Optionee’s address, and the Company shall be

  
 11 

	 	 
deemed to have complied with any obligation to provide the Optionee with notice by sending such notice to the address indicated below. 

Company’s Signature: 
 Name: 

Position: 
 Signature:
                     
 I, the
undersigned, hereby acknowledge receipt of a copy of the Plan and accept the Options subject to all of the terms and provisions thereof. I have reviewed the Plan and this Option Agreement in its entirety, have had an opportunity to obtain the advice
of counsel prior to executing this Option Agreement, and fully understand all provisions of this Option Agreement. I agree to notify the Company upon any change in the residence address indicated above. 

 

							
	 	  		  	 	  	
	Date	  		  	Optionee’s Signature	  	

  

			
	Exhibit A:	 	Imperva Inc. 2003 Stock Plan
		
	Exhibit B:	 	Terms of the Option
		
	Exhibit C:	 	Proxy
		
	Exhibit D:	 	Trust Agreement

  
 12 

 EXHIBIT B 

TERMS OF THE OPTION 
  

			
	Name of the Optionee:	  	
		
	Date of Grant:	  	
		
	Designation:	  	 •      Approved 102 Option:

		
		  	 Capital Gain Option (CGO)

 

	1.	Number of Options granted: 

  

	2.	Exercise Price: $ 

  

	3.	Vesting Dates: 

  

			
	 Number of Options
	  	 Vesting Date

		  	
		  	

	4.	Expiration Date: 10 years. 

  

							
	 	 		 	 	  	
	Optionee	 		 	Company	  	

  

  
 13 

 EXHIBIT C 

PROXY 
 The
undersigned, as record holder of securities of Imperva Inc. described below, hereby irrevocably appoints Chairman of the Board, each individually, as my proxy to attend all shareholders’ meetings and to vote, execute consents, and otherwise
represent me with respect to exercised shares (i.e. options exercised into shares pursuant to the Imperva Inc. 2003 Stock Plan) in the same manner and with the same effect as if the undersigned were personally present at any such meeting or voting
such securities or personally acting on any matters submitted to shareholders for approval or consent. 
 This proxy is made
pursuant the Imperva Inc. 2003 Stock Plan dated
14th January 2003. 

The Shares shall be voted by the proxy holder in the same proportion as the votes of the other shareholders of the Company. 

This proxy is irrevocable as it may effect rights of third parties. 
 The irrevocable proxy will remain in full force and effect until the consummation of an initial public offering, upon which it will terminate automatically. 

This proxy shall be signed exactly as the shareholder’s name appears on his share certificate. Joint shareholders must each sign this proxy. If
signed by an attorney in fact, the Power of Attorney must be attached. 
  

					
	  
	 		  	  

	 NAME
	 		  	            DATE

  

					
		 	  
	 	
		 	     SIGNATURE
	 	

  
 14 

 EXERCISE NOTICE 
 Exercise of Option – effective as of today,             , 2010 the undersigned (the “Optionee”)
hereby elects to exercise Optionee’s Option to purchase              Shares of Common Stock of Imperva Inc. (hereinafter the “Company” and the
“Shares”) pursuant to the 2003 Stock Plan (the “Plan”) and Appendix A – Israel to the Plan (both the Plan and the appendix shall be referred herein as the “Plan”) and the Option
Agreement dated             , (the “Option Agreement”). 

Delivery of Payment – Optionee herewith delivers to the Company the full exercise price of the Shares, as set forth in the Option
Agreement. 
 Trustee - Optionee herewith understands and acknowledges that the Shares issued upon the exercise of Optionee’s
Options shall be allocated or issued to a trustee nominated by the company (the “Trustee”) and shall be held by the Trustee in accordance with the provisions of section 102 of the Israeli Income Tax Ordinance [New Version] 1961.

 Representations of Optionee - Optionee acknowledges that Optionee has received, read and understood the Plan and Option
Agreement and agrees to abide by and be bound by their terms and conditions. 
 Tax Consequences – Any tax consequences
arising from the grant or exercise of any Option, from the payment for Shares covered thereby or from any other event or act (of the Company and/or its Affiliates, the Trustee or the Optionee), hereunder, shall be borne solely by the Optionee. The
Company and/or its Affiliates, and/or the Trustee shall withhold taxes according to the requirements under the applicable laws, rules, and regulations, including the withholding of taxes at source. Furthermore, the Optionee agrees to indemnify the
Company and/or its Affiliates and/or the Trustee and hold them harmless against and from any and all liability for any such tax or interest or penalty thereon, including without limitation, liabilities relating to the necessity to withhold, or to
have withheld, any such tax from any payment made to the Optionee. 
 The Company and/or the Trustee shall not be required to release any Share
certificate to any Optionee until all required payments have been fully made. 
  

					
	Submitted by:	  		  	Accepted by:
			
	OPTIONEE	  		  	Imperva Inc.
	  
	  		  	
	Signature	  		  	By
			
	  
	  		  	  

	Print Name	  		  	Signature
			
	Address:	  		  	Address:
			
	  
	  		  	125 Menachem Begin St. Tel-Aviv

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