Document:

2011 Stock Option and Incentive Plan and form agreements thereunder

 Exhibit 10.3 
 IMPERVA, INC. 
 2011 Stock Option and Incentive Plan 

1. PURPOSE. The purpose of this Plan is to provide incentives to attract, retain and motivate eligible persons whose
present and potential contributions are important to the success of the Company, and any Parents and Subsidiaries that exist now or in the future, by offering them an opportunity to participate in the Company’s future performance through the
grant of Awards. Capitalized terms not defined elsewhere in the text are defined in Section 27. 
 2. SHARES
SUBJECT TO THE PLAN. 
 2.1 Number of Shares Available. Subject to Sections 2.4, 2.6 and any other applicable
provisions hereof, the total number of Shares reserved and available for grant and issuance pursuant to this Plan as of the date of adoption of this Plan by the Board, is 1,000,000 Shares plus (a) any reserved shares not issued or subject to
outstanding grants under the Company’s 2003 Stock Plan (together with any subplans and addenda adopted thereunder, the “Prior Plan”) on the Effective Date, (b) shares that are subject to stock options granted under
the Prior Plan that cease to be subject to such stock options after the Effective Date (other than by exercise), (c) shares issued under the Prior Plan before or after the Effective Date pursuant to the exercise of stock options that are, after
the Effective Date, forfeited, and (d) shares issued under the Prior Plan that are repurchased by the Company at the original issue price. 
 2.2 Lapsed, Returned Awards. Shares subject to Awards, and Shares issued under this Plan under any Award, will again be available for grant and issuance in connection with subsequent Awards under
this Plan to the extent such Shares: (a) are subject to issuance upon exercise of an Option or SAR granted under this Plan but which cease to be subject to the Option or SAR for any reason other than exercise of the Option or SAR; (b) are
subject to Awards granted under this Plan that are forfeited or are repurchased by the Company at the original issue price; (c) are subject to Awards granted under this Plan that otherwise terminate without such Shares being issued; or
(d) are surrendered pursuant to an Exchange Program. To the extent an Award under this Plan is paid out in cash rather than Shares, such cash payment will not result in reducing the number of Shares available for issuance under this Plan.
Shares used to pay the exercise price of an Award or to satisfy the tax withholding obligations related to an Award will become available for future grant or sale under this Plan. For the avoidance of doubt, Shares that otherwise become available
for grant and issuance because of the provisions of this Section 2.2 shall not include Shares subject to Awards that initially became available because of the substitution clause in Section 21.2 hereof. 

2.3 Minimum Share Reserve. At all times the Company shall reserve and keep available a sufficient number of Shares as shall be
required to satisfy the requirements of all outstanding Awards granted under this Plan. 
 2.4 Automatic Share Reserve
Increase. The number of Shares available for grant and issuance under this Plan shall be increased on January 1, of each of 2012 through 2015, by the lesser of (a) four percent (4%) of the number of Shares issued and outstanding
on each December 31 immediately prior to the date of increase (rounded down to the nearest whole share), or (b) such number of Shares determined by the Board. 

 2.5 Limitations. No more than 20,000,000 Shares shall be issued pursuant to the
exercise of ISOs. 
 2.6 Adjustment of Shares. If the number of outstanding Shares is changed by a stock dividend,
recapitalization, stock split, reverse stock split, subdivision, combination, reclassification or similar change in the capital structure of the Company, without consideration, then (a) the number of Shares reserved for issuance and future
grant under this Plan set forth in Section 2.1, (b) the Exercise Prices of and number of Shares subject to outstanding Options and SARs, (c) the number of Shares subject to other outstanding Awards, (d) the maximum number of
shares that may be issued as ISOs set forth in Section 2.5, (e) the maximum number of Shares that may be issued to an individual or to a new Employee in any one calendar year set forth in Section 3 and (f) the number of Shares
that are granted as Awards to Non-Employee Directors as set forth in Section 12, shall be proportionately adjusted, subject to any required action by the Board or the stockholders of the Company and in compliance with applicable securities
laws; provided that fractions of a Share will not be issued. 
 3. ELIGIBILITY. ISOs may be granted only to Employees.
All other Awards may be granted to Employees, Consultants, Directors and Non-Employee Directors of the Company or any Parent or Subsidiary of the Company; provided such Consultants, Directors and Non-Employee Directors render bona fide
services not in connection with the offer and sale of securities in a capital-raising transaction. No Participant will be eligible to receive more than 500,000 Shares in any calendar year under this Plan pursuant to the grant of Awards except that
new Employees of the Company or of a Parent or Subsidiary of the Company (including new Employees who are also officers and directors of the Company or any Parent or Subsidiary of the Company) are eligible to receive up to a maximum of 1,000,000
Shares in the calendar year in which they commence their employment. 
 4. ADMINISTRATION. 

4.1 Committee Composition; Authority. This Plan will be administered by the Committee or by the Board acting as the Committee.
Subject to the general purposes, terms and conditions of this Plan, and to the direction of the Board, the Committee will have full power to implement and carry out this Plan, except, however, the Board shall establish the terms for the grant of an
Award to Non-Employee Directors. The Committee will have the authority to: 
 (a) construe and interpret this Plan, any Award
Agreement and any other agreement or document executed pursuant to this Plan; 
 (b) prescribe, amend and rescind rules and
regulations relating to this Plan or any Award; 
 (c) select persons to receive Awards; 

(d) determine the form and terms and conditions, not inconsistent with the terms of this Plan, of any Award granted hereunder. Such terms
and conditions include, but are not limited to, the exercise price, the time or times when Awards may be exercised (which may be based on performance criteria), any vesting acceleration or waiver of forfeiture restrictions, and any restriction or
limitation regarding any Award or the Shares relating thereto, based in each case on such factors as the Committee will determine; 
 (e) determine the number of Shares or other consideration subject to Awards; 

  
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 (f) determine the Fair Market Value in good faith, if necessary; 

(g) determine whether Awards will be granted singly, in combination with, in tandem with, in replacement of, or as alternatives to, other
Awards under this Plan or any other incentive or compensation plan of the Company or any Parent or Subsidiary of the Company; 

(h) grant waivers of Plan or Award conditions; 
 (i) determine the vesting, exercisability and payment of Awards; 
 (j) correct any
defect, supply any omission or reconcile any inconsistency in this Plan, any Award or any Award Agreement; 
 (k) determine
whether an Award has been earned; 
 (l) determine the terms and conditions of any, and to institute any Exchange Program;

 (m) reduce or waive any criteria with respect to Performance Factors; 

(n) adjust Performance Factors to take into account changes in law and accounting or tax rules as the Committee deems necessary or
appropriate to reflect the impact of extraordinary or unusual items, events or circumstances to avoid windfalls or hardships provided that such adjustments are consistent with the regulations promulgated under Section 162(m) of the Code with
respect to persons whose compensation is subject to Section 162(m) of the Code; and 
 (o) make all other determinations
necessary or advisable for the administration of this Plan. 
 4.2 Committee Interpretation and Discretion. Any
determination made by the Committee with respect to any Award shall be made in its sole discretion at the time of grant of the Award or, unless in contravention of any express term of this Plan or Award, at any later time, and such determination
shall be final and binding on the Company and all persons having an interest in any Award under this Plan. Any dispute regarding the interpretation of this Plan or any Award Agreement shall be submitted by the Participant or Company to the Committee
for review. The resolution of such a dispute by the Committee shall be final and binding on the Company and the Participant. The Committee may delegate to one or more executive officers the authority to review and resolve disputes with respect to
Awards held by Participants who are not Insiders, and such resolution shall be final and binding on the Company and the Participant. 
 4.3 Section 162(m) of the Code and Section 16 of the Exchange Act. When necessary or desirable for an Award to qualify as “performance-based compensation” under
Section 162(m) of the Code, the Committee shall include at least two persons who are “outside directors” (as defined under Section 162(m) of the Code) and at least two (or a majority if more than two then serve on the Committee)
such “outside directors” shall approve the grant of such Award and timely determine (as applicable) the Performance Period and any Performance Factors upon which vesting or settlement of any portion of such Award is to be subject. When
required by Section 162(m) of the Code, prior to settlement of any such Award at least two (or a majority if more than two then serve on the Committee) such “outside directors” then serving on the Committee shall determine and certify
in writing the extent to which such Performance Factors have been timely achieved and the extent to which the Shares subject to such Award have thereby been earned. Awards granted to Participants who are subject to Section 16 of 

  
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 the Exchange Act must be approved by two or more “non-employee directors” (as defined in the
regulations promulgated under Section 16 of the Exchange Act). With respect to Participants whose compensation is subject to Section 162(m) of the Code, and provided that such adjustments are consistent with the regulations promulgated
under Section 162(m) of the Code, the Committee may adjust the performance goals to account for changes in law and accounting and to make such adjustments as the Committee deems necessary or appropriate to reflect the impact of extraordinary or
unusual items, events or circumstances to avoid windfalls or hardships, including without limitation (i) restructurings, discontinued operations, extraordinary items, and other unusual or non-recurring charges, (ii) an event either not
directly related to the operations of the Company or not within the reasonable control of the Company’s management, or (iii) a change in accounting standards required by generally accepted accounting principles. 

4.4 Foreign Award Recipients. Notwithstanding any provision of this Plan to the contrary, in order to comply with the laws in
other countries in which the Company and its Subsidiaries operate or have employees or other individuals eligible for Awards, the Committee, in its sole discretion, shall have the power and authority to: (a) determine which Subsidiaries shall
be covered by this Plan; (b) determine which individuals outside the United States are eligible to participate in this Plan; (c) modify the terms and conditions of any Award granted to individuals outside the United States to comply with
applicable foreign laws; (d) establish subplans and modify exercise procedures and other terms and procedures, to the extent the Committee determines such actions to be necessary or advisable (and such subplans and/or modifications shall be
attached to this Plan as appendices); provided, however, that no such subplans and/or modifications shall increase the share limitations contained in this Plan; and (e) take any action, before or after an Award is made, that the Committee
determines to be necessary or advisable to obtain approval or comply with any local governmental regulatory exemptions or approvals. Notwithstanding the foregoing, the Committee may not take any actions hereunder, and no Awards shall be granted,
that would violate the Exchange Act or any other applicable United States securities law, the Code, or any other applicable United States governing statute or law. 
 4.5 Documentation. The Award Agreement for a given Award, this Plan and any other documents may be delivered to, and accepted by, a Participant or any other person in any manner (including
electronic distribution or posting) that meets applicable legal requirements. 
 5. OPTIONS. The Committee
may grant Options to Participants and will determine whether such Options will be Incentive Stock Options within the meaning of the Code (“ISOs”) or Nonqualified Stock Options (“NQSOs”), the number of
Shares subject to the Option, the Exercise Price of the Option, the period during which the Option may be exercised, and all other terms and conditions of the Option, subject to the following: 

5.1 Option Grant. Each Option granted under this Plan will identify the Option as an ISO or an NQSO. An Option may be, but need
not be, awarded or vested upon satisfaction of such Performance Factors during any Performance Period as are set out in advance in the Participant’s individual Award Agreement. If the Option is being earned upon the satisfaction of Performance
Factors, then the Committee will: (a) determine the nature, length and starting date of any Performance Period for each Option; and (b) select from among the Performance Factors to be used to measure the performance, if any. Performance
Periods may overlap and Participants may participate simultaneously with respect to Options that are subject to different performance goals and other criteria. 
 5.2 Date of Grant. The date of grant of an Option will be the date on which the Committee makes the determination to grant such Option, or a specified future date. The Award Agreement and a copy of
this Plan will be delivered to the Participant within a reasonable time after the granting of the Option. 

  
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 5.3 Exercise Period. Options may be exercisable within the times or upon the
conditions as set forth in the Award Agreement governing such Option; provided, however, that no Option will be exercisable after the expiration of ten (10) years from the date the Option is granted; and provided further
that no ISO granted to a person who, at the time the ISO is granted, directly or by attribution owns more than ten percent (10%) of the total combined voting power of all classes of stock of the Company or of any Parent or Subsidiary of the
Company (“Ten Percent Stockholder”) will be exercisable after the expiration of five (5) years from the date the ISO is granted. The Committee also may provide for Options to become exercisable at one time or from time
to time, periodically or otherwise, in such number of Shares or percentage of Shares as the Committee determines. 
 5.4
Exercise Price. The Exercise Price of an Option will be determined by the Committee when the Option is granted; provided that: (i) the Exercise Price of an ISO will be not less than one hundred percent (100%) of the Fair Market
Value of the Shares on the date of grant and (ii) the Exercise Price of any ISO granted to a Ten Percent Stockholder will not be less than one hundred ten percent (110%) of the Fair Market Value of the Shares on the date of grant. Payment
for the Shares purchased must be made in accordance with Section 11 and the Award Agreement and in accordance with any procedures established by the Company. The Exercise Price of a NQSO may not be less than one hundred percent (100%) of
the Fair Market Value per Share on the date of grant. 
 5.5 Method of Exercise. Any Option granted hereunder will be
exercisable according to the terms of this Plan and at such times and under such conditions as determined by the Committee and set forth in the Award Agreement. An Option may not be exercised for a fraction of a Share. An Option will be deemed
exercised when the Company receives: (a) notice of exercise (in such form as the Committee may specify from time to time) from the person entitled to exercise the Option, and (b) full payment for the Shares with respect to which the Option
is exercised (together with applicable withholding taxes). Full payment may consist of any consideration and method of payment authorized by the Committee and permitted by the Award Agreement and this Plan. Shares issued upon exercise of an Option
will be issued in the name of the Participant. Until the Shares are issued (as evidenced by the appropriate entry on 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 2.6 of this Plan. Exercising an Option in any manner will decrease the number of Shares thereafter available, both for purposes
of this Plan and for sale under the Option, by the number of Shares as to which the Option is exercised. 
 5.6
Termination. The exercise of an Option will be subject to the following (except as may be otherwise provided in an Award Agreement): 
 (a) If the Participant is Terminated for any reason except for Cause or the Participant’s death or Disability, then the Participant may exercise such Participant’s Options only to the extent
that such Options would have been exercisable by the Participant on the Termination Date no later than three (3) months after the Termination Date (or such shorter time period or longer time period not exceeding five (5) years as may be
determined by the Committee, with any exercise beyond three (3) months after the Termination Date deemed to be the exercise of an NQSO), but in any event no later than the expiration date of the Options. 

(b) If the Participant is Terminated because of the Participant’s death (or the Participant dies within three (3) months after
a Termination other than for Cause or because of the Participant’s Disability), then the Participant’s Options may be exercised only to the extent that such 

  
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Options would have been exercisable by the Participant on the Termination Date and must be exercised by the Participant’s legal representative, or authorized assignee, no later than twelve
(12) months after the Termination Date (or such shorter time period not less than six (6) months or longer time period not exceeding five (5) years as may be determined by the Committee), but in any event no later than the expiration
date of the Options. 
 (c) If the Participant is Terminated because of the Participant’s Disability, then the
Participant’s Options may be exercised only to the extent that such Options would have been exercisable by the Participant on the Termination Date and must be exercised by the Participant (or the Participant’s legal representative or
authorized assignee) no later than twelve (12) months after the Termination Date (with any exercise beyond (a) three (3) months after the Termination Date when the Termination is for a Disability that is not a “permanent
and total disability” as defined in Section 22(e)(3) of the Code, or (b) twelve (12) months after the Termination Date when the Termination is for a Disability that is a “permanent and total disability” as
defined in Section 22(e)(3) of the Code, deemed to be exercise of an NQSO), but in any event no later than the expiration date of the Options. 
 (d) If the Participant is terminated for Cause, then Participant’s Options shall expire on such Participant’s Termination Date, or at such later time and on such conditions as are determined by
the Committee, but in any no event later than the expiration date of the Options. 
 5.7 Limitations on Exercise. The
Committee may specify a minimum number of Shares that may be purchased on any exercise of an Option, provided that such minimum number will not prevent any Participant from exercising the Option for the full number of Shares for which it is then
exercisable. 
 5.8 Limitations on ISOs. With respect to Awards granted as ISOs, to the extent that the aggregate Fair
Market Value of the Shares with respect to which such ISOs are exercisable for the first time by the Participant during any calendar year (under all plans of the Company and any Parent or Subsidiary) exceeds one hundred thousand dollars ($100,000),
such Options will be treated as NQSOs. For purposes of this Section 5.8, ISOs will be taken into account in the order in which they were granted. The Fair Market Value of the Shares will be determined as of the time the Option with respect to
such Shares is granted. In the event that the Code or the regulations promulgated thereunder are amended after the Effective Date to provide for a different limit on the Fair Market Value of Shares permitted to be subject to ISOs, such different
limit will be automatically incorporated herein and will apply to any Options granted after the effective date of such amendment. 
 5.9 Modification, Extension or Renewal. The Committee may modify, extend or renew outstanding Options and authorize the grant of new Options in substitution therefor, provided that any such action
may not, without the written consent of a Participant, impair any of such Participant’s rights under any Option previously granted. Any outstanding ISO that is modified, extended, renewed or otherwise altered will be treated in accordance with
Section 424(h) of the Code. Subject to Section 18 of this Plan, by written notice to affected Participants, the Committee may reduce the Exercise Price of outstanding Options without the consent of such Participants; provided,
however, that the Exercise Price may not be reduced below the Fair Market Value on the date the action is taken to reduce the Exercise Price. 
 5.10 No Disqualification. Notwithstanding any other provision in this Plan, no term of this Plan relating to ISOs will be interpreted, amended or altered, nor will any discretion or authority
granted under this Plan be exercised, so as to disqualify this Plan under Section 422 of the Code or, without the consent of the Participant affected, to disqualify any ISO under Section 422 of the Code. 

  
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 6. RESTRICTED STOCK AWARDS. 

6.1 Awards of Restricted Stock. A Restricted Stock Award is an offer by the Company to sell to a Participant Shares that are
subject to restrictions (“Restricted Stock”). The Committee will determine to whom an offer will be made, the number of Shares the Participant may purchase, the Purchase Price, the restrictions under which the Shares
will be subject and all other terms and conditions of the Restricted Stock Award, subject to this Plan. 
 6.2
Restricted Stock Purchase Agreement. All purchases under a Restricted Stock Award will be evidenced by an Award Agreement. Except as may otherwise be provided in an Award Agreement, a Participant accepts a Restricted Stock Award by
signing and delivering to the Company an Award Agreement with full payment of the Purchase Price, within thirty (30) days from the date the Award Agreement was delivered to the Participant. If the Participant does not accept such Award within
thirty (30) days, then the offer of such Restricted Stock Award will terminate, unless the Committee determines otherwise. 

6.3 Purchase Price. The Purchase Price for a Restricted Stock Award will be determined by the Committee, may be less than
Fair Market Value on the date the Restricted Stock Award is granted, and may be zero. Payment of the Purchase Price must be made in accordance with Section 11 of this Plan, and the Award Agreement and in accordance with any procedures
established by the Company. 
 6.4 Terms of Restricted Stock Awards. Restricted Stock Awards will be subject to such
restrictions as the Committee may impose or are required by law. These restrictions may be based on completion of a specified number of years of service with the Company or upon completion of Performance Factors, if any, during any Performance
Period as set out in advance in the Participant’s Award Agreement. Prior to the grant of a Restricted Stock Award, the Committee shall: (a) determine the nature, length and starting date of any Performance Period for the Restricted Stock
Award; (b) select from among the Performance Factors to be used to measure performance goals, if any; and (c) determine the number of Shares that may be awarded to the Participant. Performance Periods may overlap and a Participant may
participate simultaneously with respect to Restricted Stock Awards that are subject to different Performance Periods and having different performance goals and other criteria. 
 6.5 Termination of Participant. Except as may be set forth in the Participant’s Award Agreement, vesting ceases on such Participant’s Termination Date (unless determined otherwise by the
Committee). 
 7. STOCK BONUS AWARDS. 

7.1 Awards of Stock Bonuses. A Stock Bonus Award is an award to an eligible person of Shares for services to be rendered or for
past services already rendered to the Company or any Parent or Subsidiary. All Stock Bonus Awards shall be made pursuant to an Award Agreement. Except as otherwise determined by the Committee, no payment from the Participant will be required for
Shares awarded pursuant to a Stock Bonus Award. If the Committee requires payment for Shares awarded pursuant to a Stock Bonus Award, the Purchase Price will be determined by the Committee and may be less than Fair Market Value on the date the Stock
Bonus Award is granted. Payment of the Purchase Price must be made in accordance with Section 11 of this Plan, and the Award Agreement and in accordance with any procedures established by the Company. 

7.2 Terms of Stock Bonus Awards. The Committee will determine the number of Shares to be awarded to the Participant under a Stock
Bonus Award and the restrictions thereon (if any). 

  
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These restrictions may be based upon completion of a specified number of years of service with the Company or upon satisfaction of performance goals based on Performance Factors during any
Performance Period as set out in advance in the Participant’s Stock Bonus Agreement. Prior to the grant of any Stock Bonus Award subject to restrictions or performance goals, the Committee shall: (a) determine the nature, length and
starting date of any Performance Period for the Stock Bonus Award; (b) select from among the Performance Factors to be used to measure performance goals; and (c) determine the number of Shares that may be awarded to the Participant.
Performance Periods may overlap and a Participant may participate simultaneously with respect to Stock Bonus Awards that are subject to different Performance Periods and different performance goals and other criteria. 

7.3 Form of Payment to Participant. Payment may be made in the form of cash, whole Shares, or a combination thereof, based on the
Fair Market Value of the Shares earned under a Stock Bonus Award on the date of payment, as determined in the sole discretion of the Committee. 
 7.4 Termination of Participation. Except as may be set forth in the Participant’s Award Agreement, vesting ceases on such Participant’s Termination Date (unless determined otherwise by
the Committee). 
 8. STOCK APPRECIATION RIGHTS. 

8.1 Awards of SARs. A Stock Appreciation Right (“SAR”) is an award to a Participant that may be settled in
cash, or Shares (which may consist of Restricted Stock), having a value equal to (a) the difference between the Fair Market Value on the date of exercise over the Exercise Price multiplied by (b) the number of Shares with respect to which
the SAR is being settled (subject to any maximum number of Shares that may be issuable as specified in an Award Agreement). All SARs shall be made pursuant to an Award Agreement. 

8.2 Terms of SARs. The Committee will determine the terms of each SAR including, without limitation: (a) the number of Shares
subject to the SAR; (b) the Exercise Price and the time or times during which the SAR may be settled; (c) the consideration to be distributed on settlement of the SAR; and (d) the effect of the Participant’s Termination on each
SAR. The Exercise Price of the SAR will be determined by the Committee when the SAR is granted, and may not be less than Fair Market Value. A SAR may be awarded upon satisfaction of Performance Factors, if any, during any Performance Period as are
set out in advance in the Participant’s individual Award Agreement. If the SAR is being earned upon the satisfaction of Performance Factors, then the Committee will: (x) determine the nature, length and starting date of any Performance
Period for each SAR; and (y) select from among the Performance Factors to be used to measure the performance, if any. Performance Periods may overlap and Participants may participate simultaneously with respect to SARs that are subject to
different Performance Factors and other criteria. 
 8.3 Exercise Period and Expiration Date. A SAR will be exercisable
within the times or upon the occurrence of events determined by the Committee and set forth in the Award Agreement governing such SAR. The SAR Agreement shall set forth the expiration date; provided that no SAR will be exercisable after the
expiration of ten (10) years from the date the SAR is granted. The Committee may also provide for SARs to become exercisable at one time or from time to time, periodically or otherwise (including, without limitation, upon the attainment during
a Performance Period of performance goals based on Performance Factors), in such number of Shares or percentage of the Shares subject to the SAR as the Committee determines. Except as may be set forth in the Participant’s Award Agreement,
vesting ceases on such Participant’s Termination Date (unless determined otherwise by the Committee). Notwithstanding the foregoing, the rules of Section 5.6 also will apply to SARs. 

  
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 8.4 Form of Settlement. Upon exercise of a SAR, a Participant will be entitled to
receive payment from the Company in an amount determined by multiplying (i) the difference between the Fair Market Value of a Share on the date of exercise over the Exercise Price; times (ii) the number of Shares with respect to which the
SAR is exercised. At the discretion of the Committee, the payment from the Company for the SAR exercise may be in cash, in Shares of equivalent value, or in some combination thereof. The portion of a SAR being settled may be paid currently or on a
deferred basis with such interest or dividend equivalent, if any, as the Committee determines, provided that the terms of the SAR and any deferral satisfy the requirements of Section 409A of the Code. 

8.5 Termination of Participation. Except as may be set forth in the Participant’s Award Agreement, vesting ceases on such
Participant’s Termination Date (unless determined otherwise by the Committee). 
 9. RESTRICTED STOCK
UNITS. 
 9.1 Awards of Restricted Stock Units. A Restricted Stock Unit (“RSU”) is an
award to a Participant covering a number of Shares that may be settled in cash, or by issuance of those Shares (which may consist of Restricted Stock). All RSUs shall be made pursuant to an Award Agreement. 

9.2 Terms of RSUs. The Committee will determine the terms of an RSU including, without limitation: (a) the number of Shares
subject to the RSU; (b) the time or times during which the RSU may be settled; and (c) the consideration to be distributed on settlement, and the effect of the Participant’s Termination on each RSU. An RSU may be awarded upon
satisfaction of such performance goals based on Performance Factors during any Performance Period as are set out in advance in the Participant’s Award Agreement. If the RSU is being earned upon satisfaction of Performance Factors, then the
Committee will: (x) determine the nature, length and starting date of any Performance Period for the RSU; (y) select from among the Performance Factors to be used to measure the performance, if any; and (z) determine the number of
Shares deemed subject to the RSU. Performance Periods may overlap and participants may participate simultaneously with respect to RSUs that are subject to different Performance Periods and different performance goals and other criteria. 

9.3 Form and Timing of Settlement. Payment of earned RSUs shall be made as soon as practicable after the date(s) determined by the
Committee and set forth in the Award Agreement. The Committee, in its sole discretion, may settle earned RSUs in cash, Shares, or a combination of both. The Committee also may permit a Participant to defer payment under a RSU to a date or dates
after the RSU is earned provided that the terms of the RSU and any deferral satisfy the requirements of Section 409A of the Code. 
 9.4 Termination of Participant. Except as may be set forth in the Participant’s Award Agreement, vesting ceases on such Participant’s Termination Date (unless determined otherwise by the
Committee). 
 10. PERFORMANCE SHARES. 

10.1 Awards of Performance Shares. A Performance Share Award is an award to a Participant denominated in Shares that may be
settled in cash, or by issuance of those Shares (which may consist of Restricted Stock). Grants of Performance Shares shall be made pursuant to an Award Agreement. 
 10.2 Terms of Performance Shares. The Committee will determine, and each Award Agreement shall set forth, the terms of each award of Performance Shares including, without limitation:

  
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 (a) the number of Shares deemed subject to such Award; (b) the Performance Factors and Performance
Period that shall determine the time and extent to which each award of Performance Shares shall be settled; (c) the consideration to be distributed on settlement, and the effect of the Participant’s Termination on each award of Performance
Shares. In establishing Performance Factors and the Performance Period the Committee will: (x) determine the nature, length and starting date of any Performance Period; (y) select from among the Performance Factors to be used; and
(z) determine the number of Shares deemed subject to the award of Performance Shares. Prior to settlement the Committee shall determine the extent to which Performance Shares have been earned. Performance Periods may overlap and Participants
may participate simultaneously with respect to Performance Shares that are subject to different Performance Periods and different performance goals and other criteria. 
 10.3 Value, Earning and Timing of Performance Shares. Each Performance Share will have an initial value equal to the Fair Market Value of a Share on the date of grant. After the applicable
Performance Period has ended, the holder of Performance Shares will be entitled to receive a payout of the number of Performance Shares earned by the Participant over the Performance Period, to be determined as a function of the extent to which the
corresponding Performance Factors or other vesting provisions have been achieved. The Committee, in its sole discretion, may pay earned Performance Shares in the form of cash, in Shares (which have an aggregate Fair Market Value equal to the value
of the earned Performance Shares at the close of the applicable Performance Period) or in a combination thereof. 
 10.4
Termination of Participant. Except as may be set forth in the Participant’s Award Agreement, vesting ceases on such Participant’s Termination Date (unless determined otherwise by the Committee). 

11. PAYMENT FOR SHARE PURCHASES. 
 Payment from a Participant for Shares purchased pursuant to this Plan may be made in cash or by check or, where expressly approved for the Participant by the Committee and where permitted by law (and to
the extent not otherwise set forth in the applicable Award Agreement): 
 (a) by cancellation of Participant’s indebtedness
to the Company; 
 (b) by surrender of shares of the Company held by the Participant that have a Fair Market Value on the date
of surrender equal to the aggregate exercise price of the Shares as to which said Award will be exercised or settled; 
 (c) by
waiver of compensation due or accrued to the Participant for services rendered or to be rendered to the Company or a Parent or Subsidiary of the Company; 
 (d) by consideration received by the Company pursuant to a broker-assisted or other cashless exercise program implemented by the Company in connection with this Plan; 

(e) by any combination of the foregoing; or 
 (f) by any other method of payment as is permitted by applicable law. 
 12.
GRANTS TO NON-EMPLOYEE DIRECTORS. 
 12.1 Types of Awards. Non-Employee Directors are eligible to
receive any type of Award offered under this Plan except ISOs. Awards pursuant to this Section 12 may be automatically 

  
 10 

 
made pursuant to policy adopted by the Board, or made from time to time as determined in the discretion of the Board. The aggregate number of Shares subject to Awards granted to a Non-Employee
Director pursuant to this Section 12 in any calendar year shall not exceed 250,000 shares; provided however, that this maximum number can later be increased by the Board effective for the calendar year next commencing thereafter without further
stockholder approval. 
 12.2 Eligibility. Awards pursuant to this Section 12 shall be granted only to Non-Employee
Directors. A Non-Employee Director who is elected or re-elected as a member of the Board will be eligible to receive an Award under this Section 12. 
 12.3 Vesting, Exercisability and Settlement. Except as set forth in Section 21, Awards shall vest, become exercisable and be settled as determined by the Board. With respect to Options and
SARs, the exercise price granted to Non-Employee Directors shall not be less than the Fair Market Value of the Shares at the time that such Option or SAR is granted. 
 13. WITHHOLDING TAXES. 
 13.1 Withholding Generally.
Whenever Shares are to be issued in satisfaction of Awards granted under this Plan, the Company may require the Participant to remit to the Company an amount sufficient to satisfy applicable federal, state, local and international withholding tax
requirements prior to the delivery of Shares pursuant to exercise or settlement of any Award. Whenever payments in satisfaction of Awards granted under this Plan are to be made in cash, such payment will be net of an amount sufficient to satisfy
applicable federal, state, local and international withholding tax requirements. 
 13.2 Stock Withholding. The
Committee, in its sole discretion and pursuant to such procedures as it may specify from time to time, may require or permit a Participant to satisfy such tax withholding obligation, in whole or in part by (without limitation) (i) paying cash,
(ii) electing to have the Company withhold otherwise deliverable cash or Shares having a Fair Market Value equal to the minimum statutory amount required to be withheld, or (iii) delivering to the Company already-owned Shares having a Fair
Market Value equal to the minimum amount required to be withheld. The Fair Market Value of the Shares to be withheld or delivered will be determined as of the date that the taxes are required to be withheld. 

14. TRANSFERABILITY. Unless determined otherwise by the Committee, an Award 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. If the Committee makes an Award transferable, such Award will contain such additional terms and conditions as the Committee deems
appropriate. All Awards shall be exercisable: (i) during the Participant’s lifetime only by (A) the Participant, or (B) the Participant’s guardian or legal representative; and (ii) after the Participant’s death, by
the legal representative of the Participant’s heirs or legatees. 
 15. PRIVILEGES OF STOCK OWNERSHIP; RESTRICTIONS
ON SHARES. 
 15.1 Voting and Dividends. No Participant will have any of the rights of a stockholder with
respect to any Shares until the Shares are issued to the Participant. After Shares are issued to the Participant, the Participant will be a stockholder and have all the rights of a stockholder with respect to such Shares, including the right to vote
and receive all dividends or other distributions made or paid with respect to such Shares; provided, that if such Shares are Restricted Stock, then any new, additional or different securities the Participant may become entitled to receive
with respect to such Shares by virtue of a stock dividend, stock split or any other change in the corporate or capital structure of the Company will be subject to the same restrictions as the Restricted Stock; provided, further, that
the 

  
 11 

 
Participant will have no right to retain such stock dividends or stock distributions with respect to Shares that are repurchased at the Participant’s Purchase Price or Exercise Price, as the
case may be, pursuant to Section 15.2. 
 15.2 Restrictions on Shares. At the discretion of the Committee, the
Company may reserve to itself and/or its assignee(s) a right to repurchase (a “Right of Repurchase”) a portion of any or all Unvested Shares held by a Participant following such Participant’s Termination at any time
within ninety (90) days after the later of the Participant’s Termination Date and the date the Participant purchases Shares under this Plan, for cash and/or cancellation of purchase money indebtedness, at the Participant’s Purchase
Price or Exercise Price, as the case may be. The Company’s Right of Repurchase shall be automatic with respect to Unvested Shares awarded to the Participant for no Purchase Price. 

16. CERTIFICATES. All certificates for Shares or other securities delivered under this Plan will be subject to such
stock transfer orders, legends and other restrictions as the Committee may deem necessary or advisable, including restrictions under any applicable federal, state or foreign securities law, or any rules, regulations and other requirements of the SEC
or any stock exchange or automated quotation system upon which the Shares may be listed or quoted. 
 17. ESCROW;
PLEDGE OF SHARES. To enforce any restrictions on a Participant’s Shares, the Committee may require the Participant to deposit all certificates representing Shares, together with stock powers or other instruments of transfer approved by
the Committee, appropriately endorsed in blank, with the Company or an agent designated by the Company to hold in escrow until such restrictions have lapsed or terminated, and the Committee may cause a legend or legends referencing such restrictions
to be placed on the certificates. Any Participant who is permitted to execute a promissory note as partial or full consideration for the purchase of Shares under this Plan will be required to pledge and deposit with the Company all or part of the
Shares so purchased as collateral to secure the payment of the Participant’s obligation to the Company under the promissory note; provided, however, that the Committee may require or accept other or additional forms of collateral
to secure the payment of such obligation and, in any event, the Company will have full recourse against the Participant under the promissory note notwithstanding any pledge of the Participant’s Shares or other collateral. In connection with any
pledge of the Shares, the Participant will be required to execute and deliver a written pledge agreement in such form as the Committee will from time to time approve. The Shares purchased with the promissory note may be released from the pledge on a
pro rata basis as the promissory note is paid. 
 18. REPRICING; EXCHANGE AND BUYOUT OF AWARDS. Without
prior stockholder approval, the Committee may (a) reprice Options or SARS (and where such repricing is a reduction in the Exercise Price of outstanding Options or SARS, the consent of the affected Participants is not required provided written
notice is provided to them), and (b) with the consent of the respective Participants (unless not required pursuant to Section 5.9 of this Plan), pay cash or issue new Awards in exchange for the surrender and cancellation of any, or all,
outstanding Awards. 
 19. SECURITIES LAW AND OTHER REGULATORY COMPLIANCE. An Award will not be effective
unless such Award is in compliance with all applicable federal and state securities laws, rules and regulations of any governmental body, and the requirements of any stock exchange or automated quotation system upon which the Shares may then be
listed or quoted, as they are in effect on the date of grant of the Award and also on the date of exercise or other issuance. Notwithstanding any other provision in this Plan, the Company will have no obligation to issue or deliver certificates for
Shares under this Plan prior to: (a) obtaining any approvals from governmental agencies that the Company determines are necessary or advisable; and/or (b) completion of any registration or other qualification of such Shares under any state
or federal law or ruling of any governmental body that the Company determines to be necessary or advisable. The Company will be under no obligation to register 

  
 12 

 
the Shares with the SEC or to effect compliance with the registration, qualification or listing requirements of any state securities laws, stock exchange or automated quotation system, and the
Company will have no liability for any inability or failure to do so. 
 20. NO OBLIGATION TO EMPLOY.
Nothing in this Plan or any Award granted under this Plan will confer or be deemed to confer on any Participant any right to continue in the employ of, or to continue any other relationship with, the Company or any Parent or Subsidiary of the
Company or limit in any way the right of the Company or any Parent or Subsidiary of the Company to terminate Participant’s employment or other relationship at any time. 
 21. CORPORATE TRANSACTIONS. 
 21.1
Assumption or Replacement of Awards by Successor. In the event of a Corporate Transaction any or all outstanding Awards may be assumed or replaced by the successor corporation, which assumption or replacement shall be
binding on all Participants. In the alternative, the successor corporation may substitute equivalent Awards or provide substantially similar consideration to Participants as was provided to stockholders (after taking into account the existing
provisions of the Awards). The successor corporation may also issue, in place of outstanding Shares of the Company held by the Participant, substantially similar shares or other property subject to repurchase restrictions no less favorable to the
Participant. In the event such successor or acquiring corporation (if any) refuses to assume, convert, replace or substitute Awards, as provided above, pursuant to a Corporate Transaction, then notwithstanding any other provision in this Plan to the
contrary, such Awards will expire on such transaction at such time and on such conditions as the Board will determine; the Board (or, the Committee, if so designated by the Board) may, in its sole discretion, accelerate the vesting of such Awards in
connection with a Corporate Transaction. In addition, in the event such successor or acquiring corporation (if any) refuses to assume, convert, replace or substitute Awards, as provided above, pursuant to a Corporate Transaction, the Committee will
notify the Participant in writing or electronically that such Award will be exercisable for a period of time determined by the Committee in its sole discretion, and such Award will terminate upon the expiration of such period. Awards need not be
treated similarly in a Corporate Transaction. 
 Notwithstanding anything to the contrary in this Section 21.1, the
Committee, in its sole discretion, may grant Awards that provide for acceleration upon a Corporate Transaction or in other events in the specific Award Agreements. 
 21.2 Assumption of Awards by the Company. The Company, from time to time, also may substitute or assume outstanding awards granted by another company, whether in connection with an acquisition of
such other company or otherwise, by either; (a) granting an Award under this Plan in substitution of such other company’s award; or (b) assuming such award as if it had been granted under this Plan if the terms of such assumed award
could be applied to an Award granted under this Plan. Such substitution or assumption will be permissible if the holder of the substituted or assumed award would have been eligible to be granted an Award under this Plan if the other company had
applied the rules of this Plan to such grant. In the event the Company assumes an award granted by another company, the terms and conditions of such award will remain unchanged (except that the Purchase Price or the Exercise Price, as the
case may be, and the number and nature of Shares issuable upon exercise or settlement of any such Award will be adjusted appropriately pursuant to Section 424(a) of the Code). In the event the Company elects to grant a new Option in
substitution rather than assuming an existing option, such new Option may be granted with a similarly adjusted Exercise Price. 

21.3 Non-Employee Directors’ Awards. Notwithstanding any provision to the contrary herein, in the event of a Corporate
Transaction, the vesting of all Awards granted to Non-

  
 13 

 
Employee Directors shall accelerate and such Awards shall become exercisable (as applicable) in full prior to the consummation of such event at such times and on such conditions as the Committee
determines. 
 22. ADOPTION AND STOCKHOLDER APPROVAL. This Plan shall be submitted for the approval of the
Company’s stockholders, consistent with applicable laws, within twelve (12) months before or after the date this Plan is adopted by the Board. 
 23. TERM OF PLAN/GOVERNING LAW. Unless earlier terminated as provided herein, this Plan will become effective on the Effective Date and will terminate ten (10) years from the
date this Plan is adopted by the Board. This Plan and all Awards granted hereunder shall be governed by and construed in accordance with the laws of the State of Delaware. 
 24. AMENDMENT OR TERMINATION OF PLAN. The Board may at any time terminate or amend this Plan in any respect, including, without limitation, amendment of any form of Award Agreement or
instrument to be executed pursuant to this Plan; provided, however, that the Board will not, without the approval of the stockholders of the Company, amend this Plan in any manner that requires such stockholder approval;
provided further, that a Participant’s Award shall be governed by the version of this Plan then in effect at the time such Award was granted. 
 25. NONEXCLUSIVITY OF THE PLAN. Neither the adoption of this Plan by the Board, the submission of this Plan to the stockholders of the Company for approval, nor any provision of this
Plan will be construed as creating any limitations on the power of the Board to adopt such additional compensation arrangements as it may deem desirable, including, without limitation, the granting of stock awards and bonuses otherwise than under
this Plan, and such arrangements may be either generally applicable or applicable only in specific cases. 
 26.
INSIDER TRADING POLICY. Each Participant who receives an Award shall comply with any policy adopted by the Company from time to time covering transactions in the Company’s securities by Employees, officers and/or directors of the
Company. 
 27. DEFINITIONS. As used in this Plan, and except as elsewhere defined herein, the following
terms will have the following meanings: 
 “Award” means any award under this Plan, including any
Option, Restricted Stock, Stock Bonus, Stock Appreciation Right, Restricted Stock Unit or award of Performance Shares. 

“Award Agreement” means, with respect to each Award, the written or electronic agreement between the Company and
the Participant setting forth the terms and conditions of the Award, which shall be in substantially a form (which need not be the same for each Participant) that the Committee has from time to time approved, and will comply with and be subject to
the terms and conditions of this Plan. 
 “Board” means the Board of Directors of the Company.

 “Cause” means (except as may otherwise be defined in Participant’s employment or services
agreement or Award Agreement) (a) the commission of an act of theft, embezzlement, fraud or dishonesty, (b) a breach of fiduciary duty to the Company or a Parent or Subsidiary, or (c) a failure to materially perform the customary
duties of Employee’s employment. 
 “Code” means the United States Internal Revenue Code of 1986,
as amended, and the regulations promulgated thereunder. 

  
 14 

 “Common Stock” means the common stock of the Company. 

“Committee” means the Compensation Committee of the Board or those persons to whom administration of this Plan,
or part of this Plan, has been delegated as permitted by law. 
 “Company” means Imperva, Inc., or any
successor corporation. 
 “Consultant” means any person, including an advisor or independent contractor,
engaged by the Company or a Parent or Subsidiary to render services to such entity. 
 “Corporate
Transaction” means the occurrence of any of the following events: (a) any “person” (as such term is used in Sections 13(d) and 14(d) of the Exchange Act) or “group” (two or more persons acting as a
partnership, limited partnership, syndicate or other group for the purpose of acquiring, holding, or disposing of the applicable securities referred to herein) becomes the “beneficial owner” (as defined in Rule 13d-3 of the Exchange
Act), directly or indirectly, of securities of the Company representing fifty percent (50%) or more of the total voting power represented by the Company’s then-outstanding voting securities; (b) the consummation of the sale or other
disposition by the Company of all or substantially all of the Company’s assets; (c) the consummation of a merger, reorganization, consolidation or similar transaction or series of related transactions of the Company with any other
corporation, other than a merger, reorganization, consolidation or similar transaction (or series of related transactions) which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent
(either by remaining outstanding or by being converted into voting securities of the surviving entity or its parent) at least a majority of the total voting power represented by the voting securities of the Company or such surviving entity or its
parent outstanding immediately after such merger, reorganization, consolidation or similar transaction (or series of related transactions), or (d) any other transaction which qualifies as a “corporate transaction” under
Section 424(a) of the Code wherein the stockholders of the Company give up all of their equity interest in the Company (except for the acquisition, sale or transfer of all or substantially all of the outstanding shares of the Company).

 “Director” means a member of the Board. 

“Disability
” means total and permanent disability as defined in Section 22(e)(3) of the Code, provided, however, that except with respect to Awards granted as ISOs, the Committee in its discretion may determine
whether a total and permanent disability exists in accordance with non-discriminatory and uniform standards adopted by the Committee from time to time, whether temporary or permanent, partial or total, as determined by the Committee. 

“Effective Date” means the date of the underwritten initial public offering of the Company’s Common Stock
pursuant to a registration statement that is declared effective by the SEC. 
 “Employee” means any
person, including Officers and Directors, employed by the Company or any Parent or Subsidiary of the Company. Neither service as a Director nor payment of a director’s fee by the Company will be sufficient to constitute “employment”
by the Company. 
 “Exchange Act” means the United States Securities Exchange Act of 1934, as amended.

 “Exchange Program” means a program pursuant to which outstanding Awards are surrendered, cancelled or
exchanged for cash, the same type of Award or a different Award (or combination thereof). 
 “Exercise
Price” means, with respect to an Option, the price at which a holder may purchase the Shares issuable upon exercise of an Option, and with respect to a SAR, the price at which the SAR is

  
 15 

 
granted to the holder thereof. 
 “Fair Market
Value” means, as of any date, the value of a share of the Company’s Common Stock determined as follows: 
 (a)
if such Common Stock is publicly traded and is then listed on a national securities exchange, its closing price on the date of determination on the principal national securities exchange on which the Common Stock is listed or admitted to trading as
reported in The Wall Street Journal or such other source as the Board or the Committee deems reliable; 
 (b) if such
Common Stock is publicly traded but is neither listed nor admitted to trading on a national securities exchange, the average of the closing bid and asked prices on the date of determination as reported in The Wall Street Journal or such other
source as the Board or the Committee deems reliable; 
 (c) in the case of an Option or SAR grant made on the Effective Date, the
price per share at which shares of the Company’s Common Stock are initially offered for sale to the public by the Company’s underwriters in the initial public offering of the Company’s Common Stock pursuant to a registration statement
filed with the SEC under the Securities Act; or 
 (d) if none of the foregoing is applicable, by the Board or the Committee in
good faith. 
 “Insider” means an officer or director of the Company or any other person whose
transactions in the Company’s Common Stock are subject to Section 16 of the Exchange Act. 
 “Non-Employee
Director” means a Director who is not an Employee of the Company or any Parent or Subsidiary. 

“Option” means an award of an option to purchase Shares pursuant to Section 5. 

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

“Participant” means a person who holds an Award under this Plan. 

“Performance Factors” means the factors selected by the Committee, which may include, but are not limited to the,
the following measures (whether or not in comparison to other peer companies) to determine whether the performance goals established by the Committee and applicable to Awards have been satisfied: 

 

	 	•	 	 net revenue and/or net revenue growth; 

  

	 	•	 	 earnings per share and/or earnings per share growth; 

  

	 	•	 	 earnings before income taxes and amortization and/or earnings before income taxes and amortization growth; 

 

	 	•	 	 operating income and/or operating income growth; 

  
 16 

	 	•	 	 net income and/or net income growth; 

  

	 	•	 	 total stockholder return and/or total stockholder return growth; 

 

	 	•	 	 return on equity; 

  

	 	•	 	 operating cash flow return on income; 

  

	 	•	 	 adjusted operating cash flow return on income; 

  

	 	•	 	 economic value added; 

  

	 	•	 	 control of expenses; 

  

	 	•	 	 cost of goods sold; 

  

	 	•	 	 profit margin; 

  

	 	•	 	 stock price; 

  

	 	•	 	 debt or debt-to-equity; 

  

	 	•	 	 liquidity; 

  

	 	•	 	 intellectual property (e.g., patents)/product development; 

 

	 	•	 	 mergers and acquisitions or divestitures; 

  

	 	•	 	 individual business objectives; 

  

	 	•	 	 company-specific operational metrics; and 

  

	 	•	 	 any other factor (such as individual business objectives or unit-specific operational metrics) the Committee so designates.

 “Performance Period” means the period of service determined by the Committee, not
to exceed five (5) years, during which years of service or performance is to be measured for the Award. 

“Performance Share” means an Award granted pursuant to Section 10 or Section 12 of this Plan.

 “Plan” means this Imperva, Inc. 2011 Stock Option and Incentive Plan. 

“Purchase Price” means the price to be paid for Shares acquired under this Plan, other than Shares acquired upon
exercise of an Option or SAR. 
 “Restricted Stock Award” means an award of Shares pursuant to
Section 6 or Section 12 of this Plan, or issued pursuant to the early exercise of an Option. 
 “Restricted
Stock Unit” means an Award granted pursuant to Section 9 or Section 12 of this Plan. 

“SEC” means the United States Securities and Exchange Commission. 

  
 17 

 “Securities Act” means the United States Securities Act of 1933, as
amended. 
 “Shares” means shares of the Company’s Common Stock, as adjusted pursuant to Sections 2
and other applicable provisions hereof, and any successor security. 
 “Stock Appreciation Right” means
an Award granted pursuant to Section 8 or Section 12 of this Plan. 
 “Stock Bonus” means
an Award granted pursuant to Section 7 or Section 12 of this Plan. 
 “Subsidiary” means 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 fifty percent (50%) or more of the
total combined voting power of all classes of stock in one of the other corporations in such chain. 

“Termination” or “Terminated” means, for purposes of this Plan with respect to a
Participant, that the Participant has for any reason ceased to provide services as an employee, officer, director, consultant, independent contractor or advisor to the Company or a Parent or Subsidiary of the Company. An employee will not be deemed
to have ceased to provide services in the case of (i) sick leave, (ii) military leave, or (iii) any other leave of absence approved by the Committee; provided, that such leave is for a period of not more than 90 days, unless
reemployment upon the expiration of such leave is guaranteed by contract or statute or unless provided otherwise pursuant to formal policy adopted from time to time by the Company and issued and promulgated to employees in writing. In the case of
any employee on an approved leave of absence, the Committee may make such provisions respecting suspension of vesting of the Award while on leave from the employ of the Company or a Parent or Subsidiary of the Company as it may deem appropriate,
except that in no event may an Award be exercised after the expiration of the term set forth in the applicable Award Agreement. The Committee will have sole discretion to determine whether a Participant has ceased to provide services and the
effective date on which the Participant ceased to provide services (the “Termination Date”). 

“Unvested Shares” means Shares that have not yet vested or are subject to a right of repurchase in favor of the
Company (or any successor thereto). 

  
 18 

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 NOTICE OF PERFORMANCE SHARES AWARD

 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option and
Incentive Plan (the “Plan”) shall have the same meanings in this Notice of Performance Shares Award (the “Notice”). 
  

					
	     Name:
	 	 	 	
			
	     Address:        
	 	 	 	

 You (“Participant”) have been granted an award of Performance Shares under the Plan subject to
the terms and conditions of the Plan, this Notice and the attached Performance Shares Award Agreement (hereinafter “Performance Shares Agreement”). 

 

					
	     Number of Shares:
	 		  	
		 	  
	  	
			
	     Date of Grant:
	 		  	
		 	  
	  	
			
	     Vesting Commencement Date:    
	 		  	
		 	  
	  	
		
	     Expiration Date:
	 	The date on which all the Shares granted hereunder become vested, with earlier expiration upon the Termination Date
		
	     Vesting Schedule:
	 	Subject to the limitations set forth in this Notice, the Plan and the Performance Shares Agreement, the Shares will vest in accordance with the following schedule:
[INSERT VESTING SCHEDULE]

 You understand that your employment or consulting relationship or service with the Company is for an unspecified
duration, can be terminated at any time (i.e., is “at-will”), and that nothing in this Notice, the Performance Shares Agreement or the Plan changes the at-will nature of that relationship. You acknowledge that the vesting pursuant to this
Notice is earned only upon the applicable certification of attainment of the requisite Performance Factors enumerated above while still in service as an Employee, Director or Consultant of the Company. You also understand that this Notice is subject
to the terms and conditions of both the Performance Shares Award Agreement and the Plan, both of which are incorporated herein by reference. You also have read both the Performance Shares Agreement and the Plan. 

 

											
				
	 PARTICIPANT
	 		  	IMPERVA, INC.	  	
						
	 Signature:
	 	 	 		  	By:	  	 	  	
						
	 Print Name:
	 	 	 		  	Its:	  	 	  	
						
	 Date:
	 	 	 		  	Date:	  	 	  	

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 PERFORMANCE SHARES AGREEMENT

 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option and
Incentive Plan (the “Plan”) shall have the same defined meanings in this Performance Shares Agreement (the “Agreement”). 
 Participant has been granted a Performance Shares Award (“Performance Shares Award”) subject to the terms, restrictions and conditions of the Plan, the Notice of Performance Shares
Award (“Notice”) and this Agreement. 
 1. Settlement. Performance Shares shall be settled in
Shares and the Company’s transfer agent shall record ownership of such Shares in Participant’s name as soon as reasonably practicable after achievement of the Performance Factors enumerated in the Notice. 

2. Stockholder Rights. Participant shall have no right to dividends or to vote Shares until Participant is recorded as the
holder of such Shares on the stock records of the Company and its transfer agent. 
 3. No-Transfer.
Participant’s interest in this Performance Shares Award shall not be sold, assigned, transferred, pledged, hypothecated, or otherwise disposed of. 
 4. Termination. Upon Participant’s Termination for any reason, all of Participant’s rights under the Plan, this Agreement and the Notice in respect of this Award
shall immediately terminate. In case of any dispute as to whether Termination has occurred, the Committee shall have sole discretion to determine whether such Termination has occurred and the effective date of such Termination. 

5. U.S. Tax Consequences. Participant acknowledges that there will be tax consequences upon issuance of the Shares, and
Participant should consult a tax adviser regarding Participant’s tax obligations prior to such settlement or disposition. Upon vesting of the Shares, Participant will include in income the fair market value of the Shares. The included amount
will be treated as ordinary income by Participant and will be subject to withholding by the Company when required by applicable law. Before any Shares subject to this Agreement are issued the Company shall withhold a number of Shares with a fair
market value (determined on the date the Shares are issued) equal to the minimum amount the Company is required to withhold for income and employment taxes. Upon disposition of the Shares, any subsequent increase or decrease in value will be treated
as short-term or long-term capital gain or loss, depending on whether the Shares are held for more than one year from the date of issuance. 

6. Acknowledgement. The Company and Participant agree that the Performance Shares Award is granted under and governed by the
Notice, this Agreement and by the provisions of the Plan (incorporated herein by reference). Participant: (a) acknowledges receipt of a copy of the Plan and the Plan prospectus, (b) represents that Participant has carefully read and is
familiar with their provisions, and (c) hereby accepts the Performance Shares Award subject to all of the terms and conditions set forth herein and those set forth in the Plan, this Agreement and the Notice. 

7. Entire Agreement; Enforcement of Rights. This Agreement, the Plan and the Notice constitute the entire agreement and
understanding of the parties relating to the subject matter herein and supersede all prior discussions between them. Any prior agreements, commitments or negotiations concerning the purchase of the Shares hereunder are superseded. No modification of
or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing and signed by the parties to this Agreement. The 

  
 1 

 
failure by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party. 
 8. Compliance with Laws and Regulations. The issuance of Shares will be subject to and conditioned upon compliance by the Company and Participant with all
applicable state and federal laws and regulations and with all applicable requirements of any stock exchange or automated quotation system on which the Company’s Common Stock may be listed or quoted at the time of such issuance or transfer.

 9. Governing Law; Severability. If one or more provisions of this Agreement are held to be
unenforceable under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (a) such provision shall be
excluded from this Agreement, (b) the balance of this Agreement shall be interpreted as if such provision were so excluded and (c) the balance of this Agreement shall be enforceable in accordance with its terms. This Agreement and all acts
and transactions pursuant hereto and the rights and obligations of the parties hereto shall be governed, construed and interpreted in accordance with the laws of the State of California, without giving effect to principles of conflicts of law.

 10. No Rights as Employee, Director or Consultant. Nothing in this Agreement shall affect in any
manner whatsoever the right or power of the Company, or a Parent or Subsidiary of the Company, to terminate
Purchaser’s service, for any reason, with or without
cause. 
 By the signature on, or electronic acceptance of, the Notice by each of the Participant and the Company’s representative,
Participant and the Company agree that this Performance Shares Award is granted under and governed by the terms and conditions of the Plan, the Notice and this Agreement. Participant has reviewed the Plan, the Notice and this Agreement in their
entirety, has had an opportunity to obtain the advice of counsel prior to executing this Agreement, and fully understands all provisions of the Plan, the Notice and this Agreement. Participant hereby agrees to accept as binding, conclusive and final
all decisions or interpretations of the Committee upon any questions relating to the Plan, the Notice and this Agreement. Participant further agrees to notify the Company upon any change in Participant’s residence address. 

  
 2 

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 NOTICE OF STOCK APPRECIATION RIGHT
AWARD 
 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option
and Incentive Plan (the “Plan”) shall have the same meanings in this Notice of Stock Appreciation Right Award (the “Notice”). 

 

					
	     Name:
	 	 	 	
			
	     Address:        
	 	 	 	

 You (“Participant”) have been granted an award of Stock Appreciation Rights
(“SARs”) of the Company under the Plan subject to the terms and conditions of the Plan, this Notice and the Stock Appreciation Right Award Agreement (the “SAR Agreement”). 

 

					
			
	     Date of Grant:
	 		  	
		 	  
	  	
			
	     Vesting Commencement Date:    
	 		  	
		 	  
	  	
			
	     Fair Market Value on Date of Grant:
	 		  	
		 	  
	  	
			
	     Total Number of Shares:
	 		  	
		 	  
	  	
			
	     Expiration Date:
	 		  	
		 	  
	  	
			
	     Post-Termination Exercise Period:
	 	        Termination for Cause = None
         Voluntary Termination = 3 Months

        Termination without Cause = 3 Months 
         Disability = 12 Months 

        Death = 12 Months
	  	
		
	     Vesting Schedule:
	 	Subject to the limitations set forth in this Notice, the Plan and the Stock Appreciation Right Agreement, the SAR will vest and may be exercised, in whole or in part,
in accordance with the following schedule: [INSERT VESTING SCHEDULE]

 You understand that your employment or consulting relationship or service with the Company is for an unspecified
duration, can be terminated at any time (i.e., is “at-will”), and that nothing in this Notice, the SAR Agreement or the Plan changes the at-will nature of that relationship. You acknowledge that the vesting of the SARs pursuant to this
Notice is earned only by continuing service as an Employee, Director or Consultant of the Company. You also understand that this Notice is subject to the terms and conditions of both the SAR Agreement and the Plan, both of which are incorporated
herein by reference. You have read both the SAR Agreement and the Plan. 
  

											
	 PARTICIPANT
	  		  	IMPERVA, INC.	  	
						
	 Signature:
	  	 	  		  	By:	  	 	  	
						
	 Print Name:
	  	 	  		  	Its:	  	 	  	
						
	 Date:
	  	 	  		  	Date:	  	 	  	

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 STOCK APPRECIATION RIGHT AWARD
AGREEMENT 
 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock
Option and Incentive Plan (the “Plan”) shall have the same meanings in this Stock Appreciation Right Award Agreement (the “Agreement”). 
 Participant has been granted Stock Appreciation Rights (“SARs”), subject to the terms and conditions of the Plan, the Notice of Stock Appreciation Right Award (the
“Notice”) and this Agreement. 
 1. Vesting Rights. Subject to the applicable
provisions of the Plan and this Agreement, this SAR may be exercised, in whole or in part, in accordance with the schedule set forth in the Notice. 
 2. Termination Period. 
 (a) General Rule. Except as
provided below, and subject to the Plan, this SAR may be exercised for 3 months after Participant’s Termination. In no event shall this SAR be exercised later than the Expiration Date set forth in the Notice. 

(b) Death; Disability. Unless provided otherwise in the Notice, upon Participant’s Termination by reason of his or her
Disability or death, or if a Participant dies within three months of the Termination Date, this SAR may be exercised for twelve months, provided that in no event shall this SAR be exercised later than the Expiration Date set forth in the Notice.

 (c) Cause. Upon Participant’s Termination for Cause, the SAR shall expire on such date of Participant’s
Termination Date. 
 3. Grant of SAR. The Participant named in the Notice has been granted a SAR for the number of Shares set
forth in the Notice at the fair market value set forth in the Notice. In the event of a conflict between the terms and conditions of the Plan and the terms and conditions of this Agreement, the terms and conditions of the Plan shall prevail.

 4. Exercise of SAR. 
 (a) Right to Exercise. This SAR is exercisable during its term in accordance with the Vesting Schedule set forth in the Notice and the applicable provisions of the Plan and this Agreement. In the
event of Participant’s death, Disability, Termination for Cause or other Termination, the exercisability of the SAR is governed by the applicable provisions of the Plan, the Notice and this Agreement. 

(b) Method of Exercise. This SAR is exercisable by delivery of an exercise notice (the “Exercise Notice”),
which shall state the election to exercise the SAR, the number of SARS to be exercised (the “Exercised SARs”), and such other representations and agreements as may be required by the Company pursuant to the provisions of the
Plan. The Exercise Notice shall be delivered in person, by mail, via electronic mail or facsimile or by other authorized method to the Secretary of the Company or other person designated by the Company. This SAR shall be deemed to be exercised upon
receipt by the Company of such fully executed Exercise Notice. 
 (c) No Shares shall be issued pursuant to the exercise of this
SAR unless such issuance and exercise complies with all relevant provisions of law and the requirements of any stock exchange or quotation service upon which the Shares are then listed. Assuming such compliance, for income tax purposes the Exercised
Shares shall be considered transferred to the Participant on the date the SAR is exercised with respect to such Exercised Shares. 

  
 1 

 5. Non-Transferability of SAR. This SAR may not be transferred in any manner other than by
will or by the laws of descent or distribution or court order and may be exercised during the lifetime of Participant only by the Participant unless otherwise permitted by the Committee on a case-by-case basis. The terms of the Plan and this
Agreement shall be binding upon the executors, administrators, heirs, successors and assigns of the Participant. 
 6. Term of
SAR. This SAR shall in any event expire on the expiration date set forth in the Notice, which date is 10 years after the Date of Grant. 
 7. U.S. Tax Consequences. For Participants subject to U.S. income tax, some of the federal tax consequences relating to this SAR, as of the date of this SAR, are set forth below. All other
Participants should consult a tax advisor for tax consequences relating to this SAR in their respective jurisdiction. THIS SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE. THE PARTICIPANT SHOULD CONSULT A
TAX ADVISER BEFORE EXERCISING THIS SAR. The Participant will incur federal ordinary income tax liability upon exercise of the SAR. The Participant will be treated as having received compensation income (taxable at ordinary income tax rates) equal to
the excess, if any, of the Fair Market Value of the Exercised Shares on the date of exercise over their Fair Market Value on the date of grant. If the Participant is an Employee or a former Employee, the Company will be required to withhold from his
or her compensation an amount equal to the minimum amount the Company is required to withhold for income and employment taxes or collect from Participant and pay to the applicable taxing authorities an amount in cash equal to a percentage of this
compensation income at the time of exercise, and may refuse to honor the exercise and refuse to deliver Shares if such withholding amounts are not delivered at the time of exercise. If the Participant holds the Shares received upon exercise of the
SAR for at least one year, any gain realized on disposition of the Shares will be treated as long-term capital gain for federal income tax purposes. 
 8. Acknowledgement. The Company and Participant agree that the SAR is granted under and governed by the Notice, this Agreement and the provisions of the Plan (incorporated
herein by reference). Participant: (a) acknowledges receipt of a copy of the Plan and the Plan prospectus, (b) represents that Participant has carefully read and is familiar with their provisions, and (c) hereby accepts the SAR
subject to all of the terms and conditions set forth herein and those set forth in the Plan and the Notice. 
 9. Entire Agreement;
Enforcement of Rights. This Agreement, the Plan and the Notice constitute the entire agreement and understanding of the parties relating to the subject matter herein and supersede all prior discussions between them. Any prior
agreements, commitments or negotiations concerning the purchase of the Shares hereunder are superseded. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing and
signed by the parties to this Agreement. The failure by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party. 
 10. Compliance with Laws and Regulations. The issuance of Shares will be subject to and conditioned upon compliance by the Company and Participant with all
applicable state and federal laws and regulations and with all applicable requirements of any stock exchange or automated quotation system on which the Company’s Common Stock may be listed or quoted at the time of such issuance or transfer.

 11. Governing Law; Severability. If one or more provisions of this Agreement are held to be
unenforceable under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (i) such provision shall be
excluded from this Agreement, (ii) the balance of this Agreement shall be interpreted as if such provision were so excluded and (iii) the balance of this Agreement shall be enforceable in accordance with its terms. This Agreement and all
acts and transactions pursuant hereto and the rights and obligations of the 

  
 2 

 
parties hereto shall be governed, construed and interpreted in accordance with the laws of the State of California, without giving effect to principles of conflicts of law. 

12. No Rights as Employee, Director or Consultant. Nothing in this Agreement shall affect in any manner whatsoever the right or
power of the Company, or a Parent or Subsidiary of the Company, to terminate Participant’s service, for any reason, with or without cause. 
 By the signature on, or electronic acceptance of, the Notice by each of the Participant and the Company’s representative, Participant and the Company agree that this SAR is granted under and governed
by the terms and conditions of the Plan, the Notice and this Agreement. Participant has reviewed the Plan, the Notice and this Agreement in their entirety, has had an opportunity to obtain the advice of counsel prior to executing or electronically
accepting the Notice, and fully understands all provisions of the Plan, the Notice and this Agreement. Participant hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Committee upon any questions relating
to the Plan, the Notice and the Agreement. Participant further agrees to notify the Company upon any change in the residence address indicated on the Notice. 

  
 3 

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 NOTICE OF STOCK OPTION GRANT

 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option and
Incentive Plan (the “Plan”) shall have the same meanings in this Notice of Stock Option Grant (the “Notice”). 
  

					
	     Name:
	 	 	 	
			
	     Address:        
	 	 	 	

 You (“Participant”) have been granted an option to purchase shares of Common Stock of the Company
under the Plan subject to the terms and conditions of the Plan, this Notice and the Stock Option Award Agreement (the “Option Agreement”). 
  

					
			
	     Date of Grant:
	 		  	
		 	  
	  	
			
	     Vesting Commencement Date:    
	 		  	
		 	  
	  	
			
	     Exercise Price per Share:
	 		  	
		 	  
	  	
			
	     Total Number of Shares:
	 		  	
		 	  
	  	
		
	     Type of Option:
	 	     Non-Qualified Stock Option (             shares)
		
		 	     Incentive Stock Option (             shares)
			
	     Expiration Date:
	 		  	
		 	  
	  	
		
	     Post-Termination Exercise Period:
	 	                Termination for Cause = None

                Voluntary Termination = 3 Months

                Termination without Cause = 3 Months

                Disability = 12 Months

                Death = 12 Months

		
	     Vesting Schedule:
	 	Subject to the limitations set forth in this Notice, the Plan and the Option Agreement, the Option will vest and may be exercised, in whole or in part, in accordance
with the following schedule: [INSERT VESTING SCHEDULE]

 You understand that your employment or consulting relationship or service with the Company is for an unspecified
duration, can be terminated at any time (i.e., is “at-will”), and that nothing in this Notice, the Option Agreement or the Plan changes the at-will nature of that relationship. You acknowledge that the vesting of the Options pursuant to
this Notice is earned only by continuing service as an Employee, Director or Consultant of the Company. You also understand that this Notice is subject to the terms and conditions of both the Option Agreement and the Plan, both of which are
incorporated herein by reference. You have read both the Option Agreement and the Plan. 
  

									
	PARTICIPANT:	 		 	IMPERVA, INC.
					
	Signature:	 	 	 		 	By:	 	 
					
	Print Name: 	 	 	 		 	Its:	 	 
					
	Date:	 	 	 		 	Date: 	 	 

  

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 STOCK OPTION AWARD AGREEMENT

 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option and
Incentive Plan (the “Plan”) shall have the same defined meanings in this Stock Option Award Agreement (the “Agreement”). 
 Participant has been granted an option to purchase Shares (the “Option”), subject to the terms and conditions of the Plan, the Notice of Stock Option Grant (the
“Notice”) and this Agreement. 
 1. Vesting Rights. Subject to the applicable provisions of
the Plan and this Agreement, this Option may be exercised, in whole or in part, in accordance with the schedule set forth in the Notice. 

2. Termination Period. 
 (a) General Rule. Except as provided below, and subject to the Plan, this Option may be exercised for 3 months after Participant’s Termination with the Company. In no event shall this Option
be exercised later than the Expiration Date set forth in the Notice. 
 (b) Death; Disability. Unless provided otherwise
in the Notice, upon Participant’s Termination by reason of his or her Disability or death, or if a Participant dies within three months of the Termination Date, this Option may be exercised for twelve months, provided that in no event shall
this Option be exercised later than the Expiration Date set forth in the Notice. 
 (c) Cause. Upon Participant’s
Termination for Cause, the Option shall expire on such date of Participant’s Termination Date. 
 3. Grant of Option. The
Participant named in the Notice has been granted an Option for the number of Shares set forth in the Notice at the exercise price per Share set forth in the Notice (the “Exercise Price”). In the event of a conflict between
the terms and conditions of the Plan and the terms and conditions of this Agreement, the terms and conditions of the Plan shall prevail. If designated in the Notice as an Incentive Stock Option (“ISO”), this Option is
intended to qualify as an Incentive Stock Option under Section 422 of the Code. However, if this Option is intended to be an ISO, to the extent that it exceeds the $100,000 rule of Code Section 422(d) it shall be treated as a Nonqualified
Stock Option (“NSO”). 
 4. Exercise of Option. 

(a) Right to Exercise. This Option is exercisable during its term in accordance with the Vesting Schedule set forth in the Notice
and the applicable provisions of the Plan and this Agreement. In the event of Participant’s death, Disability, Termination for Cause or other Termination, the exercisability of the Option is governed by the applicable provisions of the Plan,
the Notice and this Agreement. 
 (b) Method of Exercise. This Option is exercisable by delivery of an exercise notice
(the “Exercise Notice”), which shall state the election to exercise the Option, the number of Shares in respect of which the Option is being exercised (the “Exercised Shares”), and such other
representations and agreements as may be required by the Company pursuant to the provisions of the Plan. The Exercise Notice shall be delivered in person, by mail, via electronic mail or facsimile or by other authorized method to the Secretary of
the Company or other person designated by the Company. The Exercise Notice shall be accompanied by payment of the aggregate Exercise Price as to all Exercised Shares. This Option shall be deemed to be exercised upon receipt by the Company of such
fully executed Exercise Notice accompanied by such aggregate Exercise Price. 

  
 1 

 (c) No Shares shall be issued pursuant to the exercise of this Option unless such issuance
and exercise complies with all relevant provisions of law and the requirements of any stock exchange or quotation service upon which the Shares are then listed. Assuming such compliance, for income tax purposes the Exercised Shares shall be
considered transferred to the Participant on the date the Option is exercised with respect to such Exercised Shares. 
 5. Method of
Payment. Payment of the aggregate Exercise Price shall be by any of the following, or a combination thereof, at the election of the Participant: 
 (a) cash; 
 (b) check; 

(c) a “broker-assisted” or “same-day sale” (as described in Section 11(d) of the Plan); or 

(d) other method authorized by the Company. 
 6. Non-Transferability of Option. This Option may not be transferred in any manner other than by will or by the laws of descent or distribution or court order and may be exercised during the
lifetime of Participant only by the Participant unless otherwise permitted by the Committee on a case-by-case basis. The terms of the Plan and this Agreement shall be binding upon the executors, administrators, heirs, successors and assigns of the
Participant. 
 7. Term of Option. This Option shall in any event expire on the expiration date set forth in the Notice, 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 5.3 of the Plan applies). 

8. U.S. Tax Consequences. For Participants subject to U.S. income tax, some of the federal tax consequences relating to this Option, as of
the date of this Option, are set forth below. All other Participants should consult a tax advisor for tax consequences relating to this Option in their respective jurisdiction. THIS SUMMARY IS NECESSARILY INCOMPLETE, AND THE TAX LAWS AND REGULATIONS
ARE SUBJECT TO CHANGE. THE PARTICIPANT SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE SHARES. 

(a) Exercising the Option. 
 (i) Nonqualified Stock Option. The Participant may incur federal ordinary income tax liability upon exercise of a NSO. The Participant will be treated as having received compensation income
(taxable at ordinary income tax rates) equal to the excess, if any, of the Fair Market Value of the Exercised Shares on the date of exercise over their aggregate Exercise Price. If the Participant is an Employee or a former Employee, the Company
will be required to withhold from his or her compensation an amount equal to the minimum amount the Company is required to withhold for income and employment taxes or collect from Participant and pay to the applicable taxing authorities an amount in
cash equal to a percentage of this compensation income at the time of exercise, and may refuse to honor the exercise and refuse to deliver Shares if such withholding amounts are not delivered at the time of exercise. 

(ii) Incentive Stock Option. If this Option qualifies as an ISO, the Participant will have no regular federal income tax liability
upon its exercise, although the excess, if any, of the aggregate Fair Market Value of the Exercised Shares on the date of exercise over their aggregate Exercise Price will be treated as an adjustment to alternative minimum taxable income for federal
tax purposes and may subject the Participant to alternative minimum tax in the year of exercise. 

  
 2 

 (b) Disposition of Shares. 

(i) NSO. If the Participant holds NSO Shares for at least one year, any gain realized on disposition of the Shares will be treated
as long-term capital gain for federal income tax purposes. 
 (ii) ISO. If the Participant holds ISO Shares for at least
one year after exercise and two years after the grant date, any gain realized on disposition of the Shares will be treated as long-term capital gain for federal income tax purposes. If the Participant disposes of ISO Shares within one year after
exercise or two years after the grant date, any gain realized on such disposition will be treated as compensation income (taxable at ordinary income rates) to the extent of the excess, if any, of the lesser of (A) the difference between the
Fair Market Value of the Shares acquired on the date of exercise and the aggregate Exercise Price, or (B) the difference between the sale price of such Shares and the aggregate Exercise Price. 

(c) Notice of Disqualifying Disposition of ISO Shares. If the Participant sells or otherwise disposes of any of the Shares acquired
pursuant to an ISO on or before the later of (i) two years after the grant date, or (ii) one year after the exercise date, the Participant shall immediately notify the Company in writing of such disposition. The Participant agrees that he
or she may be subject to income tax withholding by the Company on the compensation income recognized from such early disposition of ISO Shares by payment in cash or out of the current earnings paid to the Participant. 

9. Acknowledgement. The Company and Participant agree that the Option is granted under and governed by the Notice, this Agreement and by
the provisions of the Plan (incorporated herein by reference). Participant: (a) acknowledges receipt of a copy of the Plan and the Plan prospectus, (b) represents that Participant has carefully read and is familiar with their provisions,
and (c) hereby accepts the Option subject to all of the terms and conditions set forth herein and those set forth in the Plan and the Notice. 
 10. Entire Agreement; Enforcement of Rights. This Agreement, the Plan and the Notice constitute the entire agreement and understanding of the parties relating to the subject matter herein
and supersede all prior discussions between them. Any prior agreements, commitments or negotiations concerning the purchase of the Shares hereunder are superseded. No modification of or amendment to this Agreement, nor any waiver of any rights under
this Agreement, shall be effective unless in writing and signed by the parties to this Agreement. The failure by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party. 

11. Compliance with Laws and Regulations. The issuance of Shares will be subject to and conditioned upon compliance by the Company and
Participant with all applicable state and federal laws and regulations and with all applicable requirements of any stock exchange or automated quotation system on which the Company’s Common Stock may be listed or quoted at the time of such
issuance or transfer. 
 12. Governing Law; Severability. If one or more provisions of this Agreement are held to be unenforceable
under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (i) such provision shall be excluded from
this Agreement, (ii) the balance of this Agreement shall be interpreted as if such provision were so excluded and (iii) the balance of this Agreement shall be enforceable in accordance with its terms. This Agreement and all acts and
transactions pursuant hereto and the rights and obligations of the parties hereto shall be governed, construed and interpreted in accordance with the laws of the State of California, without giving effect to principles of conflicts of law.

 13. No Rights as Employee, Director or Consultant. Nothing in this Agreement shall affect in any manner whatsoever the right or
power of the Company, or a Parent or Subsidiary of the Company, to terminate Participant’s service, for any reason, with or without cause. 

  
 3 

 By the signature on, or electronic acceptance of, the Notice by each of the Participant and the
Company’s representative, Participant and the Company agree that this Option is granted under and governed by the terms and conditions of the Plan, the Notice and this Agreement. Participant has reviewed the Plan, the Notice and this Agreement
in their entirety, has had an opportunity to obtain the advice of counsel prior to executing the Notice, and fully understands all provisions of the Plan, the Notice and this Agreement. Participant hereby agrees to accept as binding, conclusive and
final all decisions or interpretations of the Committee upon any questions relating to the Plan, the Notice and the Agreement. Participant further agrees to notify the Company upon any change in the residence address indicated on the Notice.

  
 4 

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 NOTICE OF STOCK BONUS AWARD

 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option and
Incentive Plan (the “Plan”) shall have the same meanings in this Notice of Stock Bonus Award (the “Notice”). 
  

					
	     Name:
	 	 	 	
			
	     Address:        
	 	 	 	

 You (“Participant”) have been granted an award of Shares under the Plan subject to the terms and
conditions of the Plan, this Notice, and the attached Stock Bonus Award Agreement (the “Stock Bonus Agreement”) to the Plan. 
  

					
			
	     Number of Shares:
	  		  	
		  	  
	  	
			
	     Date of Grant:
	  		  	
		  	  
	  	
			
	
    Vesting Commencement Date:    
	  		  	
		  	  
	  	
		
	     Expiration Date:
	  	The date on which all the Shares granted hereunder become vested, with earlier expiration upon the Termination Date
		
	     Vesting Schedule:
	  	Subject to the limitations set forth in this Notice, the Plan and the Stock Bonus Agreement, the Shares will vest in accordance with the following schedule:
[INSERT VESTING SCHEDULE]

 You understand that your employment or consulting relationship or service with the Company is for an unspecified
duration, can be terminated at any time (i.e., is “at-will”), and that nothing in this Notice, the Stock Bonus Agreement or the Plan changes the at-will nature of that relationship. You acknowledge that the vesting of the Shares pursuant
to this Notice is earned only by continuing service as an Employee, Director or Consultant of the Company. You also understand that this Notice is subject to the terms and conditions of both the Stock Bonus Agreement and the Plan, both of which are
incorporated herein by reference. You have read both the Stock Bonus Agreement and the Plan. 
  

									
	PARTICIPANT	 		 	IMPERVA, INC.
					
	Signature:	 	 	 		 	By:	 	 
					
	Print Name:	 	 	 		 	Its:	 	 
					
	Date:	 	 	 		 	Date:	 	 

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 STOCK BONUS AWARD AGREEMENT

 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option and
Incentive Plan (the “Plan”) shall have the same defined meanings in this Stock Bonus Agreement (the “Agreement”). 
 Participant has been granted a Stock Bonus Award (“Stock Bonus Award”) subject to the terms, restrictions and conditions of the Plan, the Notice of Stock Bonus Award (the
“Notice”) and this Agreement. 
 1. Issuance. Stock Bonus Awards shall be issued in Shares,
and the Company’s transfer agent shall record ownership of such Shares in Participant’s name as soon as reasonably practicable. 

2. Stockholder Rights. Participant shall have no right to dividends or to vote Shares until Participant is recorded as the
holder of such Shares on the stock records of the Company and its transfer agent. 
 3. No-Transfer. Unvested
Shares, and unvested Stock Bonus Awards, and any interest in either shall not be sold, assigned, transferred, pledged, hypothecated, or otherwise disposed of by Participant or any person whose interest derives from Participant’s interest.
“Unvested Shares” are Shares that have not yet vested pursuant to the terms of the vesting schedule set forth in the Notice. 
 4. Termination. Upon Participant’s Termination for any reason, all Unvested Shares shall immediately be forfeited to the Company, and all rights of Participant to such
Unvested Shares shall immediately terminate as of Participant’s Termination Date. In case of any dispute as to whether Termination has occurred, the Committee shall have sole discretion to determine whether such Termination has occurred and the
effective date of such Termination. 
 5. U.S. Tax Consequences. Upon vesting of Shares, Participant will include in
taxable income the difference between the fair market value of the vesting Shares, as determined on the date of their vesting, and the price paid for the Shares. This will be treated as ordinary income by Participant and will be subject to
withholding by the Company when required by applicable law. Before any Shares subject to this Agreement are issued the Company shall withhold a number of Shares with a fair market value (determined on the date the Shares are issued) equal to the
minimum amount the Company is required to withhold for income and employment taxes. Upon disposition of the Shares, any subsequent increase or decrease in value will be treated as short-term or long-term capital gain or loss, depending on whether
the Shares are held for more than one year from the date of settlement. 
 6. Acknowledgement. The Company and
Participant agree that the Stock Bonus Award is granted under and governed by the Notice, this Agreement and by the provisions of the Plan (incorporated herein by reference). Participant: (a) acknowledges receipt of a copy of the Plan and the
Plan prospectus, (b) represents that Participant has carefully read and is familiar with their provisions, and (c) hereby accepts the Stock Bonus Award subject to all of the terms and conditions set forth herein and those set forth in the
Plan, this Agreement and the Notice. 
 7. Entire Agreement; Enforcement of Rights. This Agreement, the Plan and the
Notice constitute the entire agreement and understanding of the parties relating to the subject matter herein and supersede all prior discussions between them. Any prior agreements, commitments or negotiations concerning the purchase of the Shares
hereunder are superseded. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing and signed by the parties to this Agreement. The failure by either party to enforce
any rights under this Agreement shall not be construed as a waiver of any rights of such party. 

  
 1 

 8. Compliance with Laws and Regulations. The issuance of
Shares will be subject to and conditioned upon compliance by the Company and Participant with all applicable state and federal laws and regulations and with all applicable requirements of any stock exchange or automated quotation system on which the
Company’s Common Stock may be listed or quoted at the time of such issuance or transfer. 
 9.
Governing Law; Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties
cannot reach a mutually agreeable and enforceable replacement for such provision, then (a) such provision shall be excluded from this Agreement, (b) the balance of this Agreement shall be interpreted as if such provision were so excluded,
and (c) the balance of this Agreement shall be enforceable in accordance with its terms. This Agreement and all acts and transactions pursuant hereto and the rights and obligations of the parties hereto shall be governed, construed and
interpreted in accordance with the laws of the State of California, without giving effect to principles of conflicts of law. 
 10. No Rights as Employee, Director or Consultant. Nothing in this Agreement shall affect in any manner whatsoever the right or power of the Company, or a Parent or Subsidiary
of the Company, to terminate Purchaser’s service, for
any reason, with or without cause. 
 By the signature on, or electronic acceptance of, the Notice by each of the Participant and the
Company’s representative, Participant and the Company agree that this Stock Bonus Award is granted under and governed by the terms and conditions of the Plan, the Notice and this Agreement. Participant has reviewed the Plan, the Notice and this
Agreement in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Agreement, and fully understands all provisions of the Plan, the Notice and this Agreement. Participant hereby agrees to accept as binding,
conclusive and final all decisions or interpretations of the Committee upon any questions relating to the Plan, the Notice and this Agreement. Participant further agrees to notify the Company upon any change in Participant’s residence address.

  
 2 

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 NOTICE OF RESTRICTED STOCK UNIT
AWARD 
 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option
and Incentive Plan (the “Plan”) shall have the same meanings in this Notice of Restricted Stock Unit Award (the “Notice”). 

 

					
	     Name:
	 	 	 	
			
	     Address:        
	 	 	 	

 You (“Participant”) have been granted an award of Restricted Stock Units
(“RSUs”) under the Plan subject to the terms and conditions of the Plan, this Notice and the attached Award Agreement (Restricted Stock Units) (hereinafter “RSU Agreement”). 

 

					
			
	     Number of RSUs:
	  		  	
		  	  
	  	
			
	     Date of Grant:
	  		  	
		  	  
	  	
			
	     Vesting Commencement Date:
	  		  	
		  	  
	  	
		
	     Expiration Date:
	  	The date on which settlement of all RSUs granted hereunder occurs, with earlier expiration upon the Termination Date
		
	     Vesting Schedule:
	  	Subject to the limitations set forth in this Notice, the Plan and the RSU Agreement, the RSUs will vest in accordance with the following schedule: [INSERT VESTING
SCHEDULE]

 You understand that your employment or consulting relationship or service with the Company is for an unspecified
duration, can be terminated at any time (i.e., is “at-will”), and that nothing in this Notice, the RSU Agreement or the Plan changes the at-will nature of that relationship. You acknowledge that the vesting of the RSUs pursuant to this
Notice is earned only by continuing service as an Employee, Director or Consultant of the Company. You also understand that this Notice is subject to the terms and conditions of both the RSU Agreement and the Plan, both of which are incorporated
herein by reference. You have read both the RSU Agreement and the Plan. 
  

									
	PARTICIPANT	 		 	IMPERVA, INC.
					
	Signature:	 	 	 		 	By:	 	 
					
	Print Name:	 	 	 		 	Its:	 	 
					
	Date:	 	 	 		 	Date:	 	 

  

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 AWARD AGREEMENT (RESTRICTED STOCK
UNITS) 
 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option
and Incentive Plan (the “Plan”) shall have the same defined meanings in this Award Agreement (Restricted Stock Units) (the “Agreement”). 
 Participant has been granted Restricted Stock Units (“RSUs”) subject to the terms, restrictions and conditions of the Plan, the Notice of Restricted Stock Unit Award (the
“Notice”) and this Agreement. 
 1. Settlement. Settlement of RSUs shall be made within
30 days following the applicable date of vesting under the vesting schedule set forth in the Notice. Settlement of RSUs shall be in Shares. 
 2. No Stockholder Rights. Unless and until such time as Shares are issued in settlement of vested RSUs, Participant shall have no ownership of the Shares allocated to the RSUs and
shall have no right dividends or to vote such Shares. 
 3. Dividend Equivalents. Dividends, if any (whether in cash or
Shares), shall not be credited to Participant. 
 4. No Transfer. The RSUs and any interest therein shall not be sold,
assigned, transferred, pledged, hypothecated, or otherwise disposed of. 
 5. Termination. If Participant’s service
Terminates for any reason, all unvested RSUs shall be forfeited to the Company forthwith, and all rights of Participant to such RSUs shall immediately terminate. In case of any dispute as to whether Termination has occurred, the Committee shall have
sole discretion to determine whether such Termination has occurred and the effective date of such Termination. 
 6. U.S. Tax
Consequences. Participant acknowledges that there will be tax consequences upon settlement of the RSUs or disposition of the Shares, if any, received in connection therewith, and Participant should consult a tax adviser regarding
Participant’s tax obligations prior to such settlement or disposition. Upon vesting of the RSU, Participant will include in income the fair market value of the Shares subject to the RSU. The included amount will be treated as ordinary income by
Participant and will be subject to withholding by the Company when required by applicable law. Upon disposition of the Shares, any subsequent increase or decrease in value will be treated as short-term or long-term capital gain or loss, depending on
whether the Shares are held for more than one year from the date of settlement. Further, an RSU may be considered a deferral of compensation that may be subject to Section 409A of the Code. Section 409A of the Code imposes special rules to
the timing of making and effecting certain amendments of this RSU with respect to distribution of any deferred compensation. You should consult your personal tax advisor for more information on the actual and potential tax consequences of this RSU.

 7. Acknowledgement. The Company and Participant agree that the RSUs are granted under and governed by the Notice, this
Agreement and the provisions of the Plan. Participant: (a) acknowledges receipt of a copy of the Plan and the Plan prospectus, (b) represents that Participant has carefully read and is familiar with their provisions, and (c) hereby
accepts the RSUs subject to all of the terms and conditions set forth herein and those set forth in the Plan and the Notice. 
 8. Entire
Agreement; Enforcement of Rights. This Agreement, the Plan and the Notice constitute the entire agreement and understanding of the parties relating to the subject matter herein and supersede all prior discussions between them. Any
prior agreements, commitments or negotiations concerning the purchase of the Shares hereunder are superseded. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing
and signed by the parties to this Agreement. The 

  
 1 

 
failure by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party. 
 9. Compliance with Laws and Regulations. The issuance of Shares will be subject to and conditioned upon compliance by the Company and Participant with all
applicable state and federal laws and regulations and with all applicable requirements of any stock exchange or automated quotation system on which the Company’s Common Stock may be listed or quoted at the time of such issuance or transfer.

 10. Governing Law; Severability. If one or more provisions of this Agreement are held to be unenforceable
under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (a) such provision shall be excluded from
this Agreement, (b) the balance of this Agreement shall be interpreted as if such provision were so excluded and (c) the balance of this Agreement shall be enforceable in accordance with its terms. This Agreement and all acts and
transactions pursuant hereto and the rights and obligations of the parties hereto shall be governed, construed and interpreted in accordance with the laws of the State of California, without giving effect to principles of conflicts of law.

 11. No Rights as Employee, Director or Consultant. Nothing in this Agreement shall affect in any
manner whatsoever the right or power of the Company, or a Parent or Subsidiary of the Company, to terminate
Participant’s service, for any reason, with or
without cause. 
 By the signature on, or electronic acceptance of, the Notice by each of the Participant and the Company’s representative,
Participant and the Company agree that this RSU is granted under and governed by the terms and conditions of the Plan, the Notice and this Agreement. Participant has reviewed the Plan, the Notice and this Agreement in their entirety, has had an
opportunity to obtain the advice of counsel prior to executing this Agreement, and fully understands all provisions of the Plan, the Notice and this Agreement. Participant hereby agrees to accept as binding, conclusive and final all decisions or
interpretations of the Committee upon any questions relating to the Plan, the Notice and this Agreement. Participant further agrees to notify the Company upon any change in Participant’s residence address. 

  
 2 

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 NOTICE OF RESTRICTED STOCK AWARD

 Unless otherwise defined herein, the terms defined in the Imperva, Inc. (the “Company”) 2011 Stock Option and
Incentive Plan (the “Plan”) shall have the same meanings in this Notice of Restricted Stock Award (the “Notice”). 
  

					
	     Name:
	 	 	 	
			
	     Address:        
	 	 	 	

 You (“Participant”) have been granted an award of Restricted Shares of Common Stock of Imperva,
Inc. (the “Company”) under the Plan subject to the terms and conditions of the Plan, this Notice and the attached Restricted Stock Agreement (the “Restricted Stock Purchase Agreement”). 

 

					
	    Total Number of Restricted Shares Awarded:	 	 
			
	    Fair Market Value per Restricted Share:	 	$	 	 
			
	    Total Fair Market Value of Award:	 	$	 	 
			
	     Purchase Price per Restricted Share:
	 	$	 	 
			
	
    Total Purchase Price for all Restricted Shares:  
	 	$	 	 
			
	    Date of Grant:	 	 	 	 
		
	    Vesting Commencement Date:	 	 
		
		 	  Vesting Schedule: Subject to the limitations set forth in this Notice, the Plan and the Restricted Stock Purchase Agreement, the Restricted Shares
will vest and the right of repurchase shall lapse, in whole or in part, in accordance with the following schedule: [INSERT VESTING SCHEDULE]

 You understand that your employment or consulting relationship with the Company is for an unspecified duration, can be
terminated at any time (i.e., is “at-will”), and that nothing in this Notice, the Restricted Stock Agreement or the Plan changes the at-will nature of that relationship. You acknowledge that the vesting of the Restricted Shares pursuant to
this Notice is earned only by continuing service as an Employee, Director or Consultant of the Company. You also understand that this Notice is subject to the terms and conditions of both the Restricted Stock Agreement and the Plan, both of which
are incorporated herein by reference. You have read both the Restricted Stock Agreement and the Plan. If the Restricted Stock Purchase Agreement is not executed or accepted electronically by you within thirty (30) days of the Date of Grant
above, then this grant shall be void. 
  

									
	RECIPIENT	 		 	IMPERVA, INC.
					
	Signature:	 	 	 		 	By:	 	 
					
	Print Name:	 	 	 		 	Its:	 	 
					
	Date:	 	 	 		 	Date:	 	 

  

 IMPERVA, INC. 
 2011 STOCK OPTION AND INCENTIVE PLAN 
 RESTRICTED STOCK AGREEMENT

 THIS RESTRICTED STOCK AGREEMENT (this “Agreement”) is made as of
        , 20     by and between Imperva, Inc., a Delaware corporation (the “Company”), and
                 (“Participant”) pursuant to the Company’s 2011 Stock Option and Incentive Plan (the “Plan”).
Unless otherwise defined herein, the terms defined in the Plan shall have the same meanings in this Agreement. 
 1.
Sale of Stock. Subject to the terms and conditions of this Agreement, on the Purchase Date (as defined below) the Company will issue and sell to Participant, and Participant agrees to purchase from the Company the number of Shares shown
on the Notice of Restricted Stock Award (the “Notice”) at a purchase price of $             per Share. The per Share purchase price of the Shares shall be not
less than the par value of the Shares as of the date of the offer of such Shares to the Participant. The term “Shares” refers to the purchased Shares and all securities received in replacement of or in connection with the Shares pursuant
to stock dividends or splits, all securities received in replacement of the Shares in a recapitalization, merger, reorganization, exchange or the like, and all new, substituted or additional securities or other properties to which Participant is
entitled by reason of Participant’s ownership of the Shares. 
 2. Time and Place of Purchase. The purchase
and sale of the Shares under this Agreement shall occur at the principal office of the Company simultaneously with the execution of this Agreement by the parties, or on such other date as the Company and Participant shall agree (the
“Purchase Date”). On the Purchase Date, the Company will issue in Participant’s name a stock certificate representing the Shares to be purchased by Participant against payment of the purchase price therefor by
Participant by (a) check made payable to the Company, (b) cancellation of indebtedness of the Company to Participant, (c) Participant’s personal services that the Committee has determined have already been rendered to the Company
and have a value not less than aggregate par value of the Shares to be issued Participant, or (d) a combination of the foregoing. 
 3. Restrictions on Resale. By signing this Agreement, Participant agrees not to sell any Shares acquired pursuant to the Plan and this Agreement at a time when applicable laws, regulations
or Company or underwriter trading policies prohibit exercise or sale. This restriction will apply as long as Participant is providing service to the Company or a Subsidiary of the Company. 

3.1 Repurchase Right on Termination Other Than for Cause. For the purposes of this Agreement, a “Repurchase
Event” shall mean an occurrence of one of the following: 
 (i) termination of Participant’s service,
whether voluntary or involuntary and with or without cause; 
 (ii) resignation, retirement or death of Participant; or

 (iii) any attempted transfer by Participant of the Shares, or any interest therein, in violation of this Agreement.

 Upon the occurrence of a Repurchase Event, the Company shall have the right (but not an obligation) to purchase the Shares of
Participant at a price equal to the Purchase Price per Share (the “Repurchase Right”). The Repurchase Right shall lapse in accordance with the vesting schedule set forth in the

  
 1 

 
Notice. For purposes of this Agreement, “Unvested Shares” means Stock pursuant to which the Company’s Repurchase Right has not lapsed. 

3.2 Exercise of Repurchase Right. Unless the Company provides written notice to Participant within 90 days from the date of
termination of Participant’s service to the Company that the Company does not intend to exercise its Repurchase Right with respect to some or all of the Unvested Shares, the Repurchase Right shall be deemed automatically exercised by the
Company as of the 90th day following such termination, provided that the Company may notify Participant that it is exercising its Repurchase Right as of a date prior to such 90th day. Unless Participant is otherwise notified by the Company pursuant
to the preceding sentence that the Company does not intend to exercise its Repurchase Right as to some or all of the Unvested Shares, execution of this Agreement by Participant constitutes written notice to Participant of the Company’s
intention to exercise its Repurchase Right with respect to all Unvested Shares to which such Repurchase Right applies at the time of Termination of Participant. The Company, at its choice, may satisfy its payment obligation to Participant with
respect to exercise of the Repurchase Right by either (a) delivering a check to Participant in the amount of the purchase price for the Unvested Shares being repurchased, or (b) in the event Participant is indebted to the Company,
canceling an amount of such indebtedness equal to the purchase price for the Unvested Shares being repurchased, or (c) by a combination of (a) and (b) so that the combined payment and cancellation of indebtedness equals such purchase
price. In the event of any deemed automatic exercise of the Repurchase Right by canceling an amount of such indebtedness equal to the purchase price for the Unvested Shares being repurchased, such cancellation of indebtedness shall be deemed
automatically to occur as of the 90th day following termination of Participant’s employment or consulting relationship unless the Company otherwise satisfies its payment obligations. As a result of any repurchase of Unvested Shares pursuant to
the Repurchase Right, the Company shall become the legal and beneficial owner of the Unvested Shares being repurchased and shall have all rights and interest therein or related thereto, and the Company shall have the right to transfer to its own
name the number of Unvested Shares being repurchased by the Company, without further action by Participant. 
 3.3
Acceptance of Restrictions. Acceptance of the Shares shall constitute Participant’s agreement to such restrictions and the legending of his or her certificates with respect thereto. Notwithstanding such restrictions, however, so long
as Participant is the holder of the Shares, or any portion thereof, he or she shall be entitled to receive all dividends declared on and to vote the Shares and to all other rights of a stockholder with respect thereto. 

3.4 Non-Transferability of Unvested Shares. In addition to any other limitation on transfer created by applicable
securities laws or any other agreement between the Company and Participant, Participant may not transfer any Unvested Shares, or any interest therein, unless consented to in writing by a duly authorized representative of the Company. Any purported
transfer is void and of no effect, and no purported transferee thereof will be recognized as a holder of the Unvested Shares for any purpose whatsoever. Should such a transfer purport to occur, the Company may refuse to carry out the transfer on its
books, set aside the transfer, or exercise any other legal or equitable remedy. In the event the Company consents to a transfer of Unvested Shares, all transferees of Shares or any interest therein will receive and hold such Shares or interest
subject to the provisions of this Agreement, including, insofar as applicable, the Repurchase Right. In the event of any purchase by the Company hereunder where the Shares or interest are held by a transferee, the transferee shall be obligated, if
requested by the Company, to transfer the Shares or interest to the Participant for consideration equal to the amount to be paid by the Company hereunder. In the event the Repurchase Right is deemed exercised by the Company, the Company may deem any
transferee to have transferred the Shares or interest to Participant prior to their purchase by the Company, and payment of the purchase price by the Company to such transferee shall be deemed to satisfy Participant’s obligation to pay such
transferee for such Shares or interest, and also to satisfy the Company’s obligation to pay Participant for such Shares or interest. 

  
 2 

 3.5 Assignment. The Repurchase Right may be assigned by the Company in whole
or in part to any persons or organization. 
 4. Restrictive Legends and Stop Transfer Orders. 

4.1 Legends. The certificate or certificates representing the Shares shall bear the following legend (as well as any
legends required by applicable state and federal corporate and securities laws): 
 THE SHARES REPRESENTED BY THIS CERTIFICATE
MAY BE TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF AN AGREEMENT BETWEEN THE COMPANY AND THE STOCKHOLDER, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY. 
 4.2 Stop-Transfer Notices. Participant agrees that, in order to ensure compliance with the restrictions referred to herein, the Company may issue appropriate “stop transfer”
instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make appropriate notations to the same effect in its own records. 
 4.3 Refusal to Transfer. The Company shall not be required (i) to transfer on its books any Shares that have been sold or otherwise transferred in violation of any of the provisions of
this Agreement or (ii) to treat as the owner or to accord the right to vote or pay dividends to any purchaser or other transferee to whom such Shares shall have been so transferred. 

5. No Rights as Employee, Director or Consultant. Nothing in this Agreement shall affect in any manner
whatsoever the right or power of the Company, or a Parent or Subsidiary of the Company, to terminate
Participant’s service, for any reason, with or
without cause. 
 6. Miscellaneous. 
 6.1 Acknowledgement. The Company and Participant agree that the Restricted Shares are granted under and governed by the Notice, this Agreement and by the provisions of the Plan (incorporated
herein by reference). Participant: (a) acknowledges receipt of a copy of the Plan and the Plan prospectus, (b) represents that Participant has carefully read and is familiar with their provisions, and (c) hereby accepts the Restricted
Shares subject to all of the terms and conditions set forth herein and those set forth in the Plan and the Notice. 
 6.2
Entire Agreement; Enforcement of Rights. This Agreement, the Plan and the Notice constitute the entire agreement and understanding of the parties relating to the subject matter herein and supersede all prior discussions between them. Any
prior agreements, commitments or negotiations concerning the purchase of the Shares hereunder are superseded. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing
and signed by the parties to this Agreement. The failure by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party. 

6.3 Compliance with Laws and Regulations. The issuance of Shares will be subject to and conditioned upon compliance by the
Company and Participant with all applicable state and federal laws and regulations and with all applicable requirements of any stock exchange or automated quotation system on which the Company’s Common Stock may be listed or quoted at the time
of such issuance or transfer. 

  
 3 

 6.4 Governing Law; Severability. If one or more provisions of this Agreement
are held to be unenforceable under applicable law, the parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (a) such
provision shall be excluded from this Agreement, (b) the balance of this Agreement shall be interpreted as if such provision were so excluded and (c) the balance of this Agreement shall be enforceable in accordance with its terms. This
Agreement and all acts and transactions pursuant hereto and the rights and obligations of the parties hereto shall be governed, construed and interpreted in accordance with the laws of the State of California, without giving effect to principles of
conflicts of law. 
 6.5 Construction. This Agreement is the result of negotiations between and has been reviewed
by each of the parties hereto and their respective counsel, if any; accordingly, this Agreement shall be deemed to be the product of all of the parties hereto, and no ambiguity shall be construed in favor of or against any one of the parties hereto.

 6.6 Notices. Any notice to be given under the terms of the Plan shall be addressed to the Company in care of
its principal office, and any notice to be given to the Participant shall be addressed to such Participant at the address maintained by the Company for such person or at such other address as the Participant may specify in writing to the Company.

 6.7 Counterparts. This Agreement may be executed in two or more counterparts, each of which shall he deemed an
original and all of which together shall constitute one instrument. 
 6.8 U.S. Tax Consequences. Upon vesting of
Shares, Participant will include in taxable income the difference between the fair market value of the vesting Shares, as determined on the date of their vesting, and the price paid for the Shares. This will be treated as ordinary income by
Participant and will be subject to withholding by the Company when required by applicable law. In the absence of an Election (defined below), the Company shall withhold a number of vesting Shares with a fair market value (determined on the date of
their vesting) equal to the minimum amount the Company is required to withhold for income and employment taxes. If Participant makes an Election, then Participant must, prior to making the Election, pay in cash (or check) to the Company an amount
equal to the amount the Company is required to withhold for income and employment taxes. 
 7. Section 83(b)
Election. Participant hereby acknowledges that he or she has been informed that, with respect to the purchase of the Shares, an election may be filed by the Participant with the Internal Revenue Service, within 30 days of the purchase of the
Shares, electing pursuant to Section 83(b) of the Code to be taxed currently on any difference between the purchase price of the Shares and their Fair Market Value on the date of purchase (the “Election”). Making the
Election will result in recognition of taxable income to the Participant on the date of purchase, measured by the excess, if any, of the Fair Market Value of the Shares over the purchase price for the Shares. Absent such an Election, taxable income
will be measured and recognized by Participant at the time or times on which the Company’s Repurchase Right lapses. Participant is strongly encouraged to seek the advice of his or her own tax consultants in connection with the purchase of the
Shares and the advisability of filing of the Election. PARTICIPANT ACKNOWLEDGES THAT IT IS SOLELY PARTICIPANT’S RESPONSIBILITY, AND NOT THE COMPANY’S RESPONSIBILITY, TO TIMELY FILE THE ELECTION UNDER SECTION 83(b) OF THE CODE, EVEN IF
PARTICIPANT REQUESTS THE COMPANY, OR ITS REPRESENTATIVE, TO MAKE THIS FILING ON PARTICIPANT’S BEHALF. 

  
 4 

 The parties have executed or electronically accepted this Agreement as of the date first set
forth above. 
  

			
	IMPERVA, INC.
		
	By: 	 	 
		
	Its: 	 	 

  

			
	 RECIPIENT:

		
	Signature 	 	 

  

			
	Please Print Name 	 	 

  
 5 

 RECEIPT 
 Imperva, Inc. hereby acknowledges receipt of (check as applicable): 
  ̈ A check in the amount of $                 
  ̈ The cancellation of indebtedness in the amount of $                

 given by                  as consideration for
Certificate No. -                  for                  shares of Common
Stock of Imperva, Inc. 
 Dated:
                     
  

			
	IMPERVA, INC.
		
	By: 	 	 
		
	Its: 	 	 

  

 RECEIPT AND CONSENT 

The undersigned Participant hereby acknowledges receipt of a photocopy of Certificate No. -
                     for                  shares of
Common Stock of Imperva, Inc. (the “Company”) 
 The undersigned further acknowledges that the Secretary
of the Company, or his or her designee, is acting as escrow holder pursuant to the Restricted Stock Agreement that Participant has previously entered into with the Company. As escrow holder, the Secretary of the Company, or his or her designee,
holds the original of the aforementioned certificate issued in the undersigned’s name. To facilitate any transfer of Shares to the Company pursuant to the Restricted Stock Agreement, Participant has executed the attached Assignment Separate
from Certificate. 
 Dated:
                    , 20         

 

			
	Signature: 	 	 

  

			
	Please Print Name: 	 	 

  

 STOCK POWER AND ASSIGNMENT 

SEPARATE FROM STOCK CERTIFICATE 
 FOR VALUE RECEIVED and pursuant to that certain Restricted Stock Agreement dated as of
                    ,
                    , [COMPLETE AT THE TIME OF PURCHASE] (the “Agreement”), the
undersigned Participant hereby sells, assigns and transfers unto                     ,
                 shares of the Common Stock $0.0001, par value per share, of Imperva, Inc., a Delaware corporation (the “Company”),
standing in the undersigned’s name on the books of the Company represented by Certificate No(s).                 
                    [COMPLETE AT THE TIME OF PURCHASE] delivered herewith, and does hereby irrevocably constitute and
appoint the Secretary of the Company as the undersigned’s attorney-in-fact, with full power of substitution, to transfer said stock on the books of the Company. THIS ASSIGNMENT MAY ONLY BE USED AS AUTHORIZED BY THE AGREEMENT AND ANY EXHIBITS
THERETO. 
 Dated:
                    ,          

 

			
		 	PARTICIPANT
		
		 	 
		 	(Signature)
		
		 	 
		 	(Please Print Name)

 Instructions to Participant: Please do not fill in any blanks other than the signature line. The
purpose of this document is to enable the Company and/or its assignee(s) to acquire the shares upon exercise of its “Repurchase Right” set forth in the Agreement without requiring additional action by the Participant.Form of Amended and Restated Indemnification Agreement

 EXHIBIT 10.4 

[AMENDED AND RESTATED]1 INDEMNIFICATION AGREEMENT 
 This [Amended and Restated] Indemnification Agreement (“Agreement”) is made as of              by and between Imperva,
Inc., a Delaware corporation (the “Company”), and              (“Indemnitee”). 

RECITALS 

WHEREAS, the Company desires to attract and retain the services of highly qualified individuals, such as Indemnitee, to serve the Company
and its Subsidiaries and Enterprises (each as defined below); 
 WHEREAS, in order to induce Indemnitee to provide or continue
to provide services to the Company and/or its Subsidiaries or Enterprises, the Company wishes to provide for the indemnification of, and advancement of expenses to, Indemnitee to the maximum extent permitted by law; 

WHEREAS, the Bylaws (as the same may be amended, restated or otherwise modified from time to time, the “Bylaws”) of the
Company require indemnification of the executive officers and directors of the Company, and Indemnitee may also be entitled to indemnification pursuant to the General Corporation Law of the State of Delaware (the “DGCL”);

 WHEREAS, the Bylaws and the DGCL expressly provide that the indemnification provisions set forth therein are not exclusive,
and thereby contemplate that contracts may be entered into between the Company and members of the board of directors and executive officers with respect to indemnification; 
 WHEREAS, the Board of Directors of the Company (the “Board”) has determined that the increased difficulty in attracting and retaining highly qualified persons such as Indemnitee is
detrimental to the best interests of the Company’s stockholders; 
 WHEREAS, it is reasonable, prudent and necessary for
the Company contractually to obligate itself to indemnify, and to advance expenses on behalf of, the executive officers and directors of the Company to the fullest extent permitted by applicable law, regardless of any amendment or revocation of the
Certificate of Incorporation (as the same may be amended, restated or otherwise modified from time to time, the “Charter”) or the Bylaws, so that they will serve or continue to serve the Company free from undue concern that they
will not be so indemnified; [and] 
 WHEREAS, this Agreement is a supplement to and in furtherance of the indemnification
provided in the Bylaws and any resolutions adopted pursuant thereto, and shall not be deemed a substitute therefor, nor to diminish or abrogate any rights of Indemnitee thereunder[.] [; and] 

  
  

	1 	 Note: to amend and restate for directors with agreements in place. 

 [WHEREAS, Indemnitee has certain rights to indemnification and/or
insurance provided by [Name of Fund/Sponsor] which Indemnitee and [Name of Fund/Sponsor] intend to be secondary to the primary obligation of the Company to indemnify Indemnitee as provided in this Agreement, with the Company’s acknowledgment
and agreement to the foregoing being a material condition to Indemnitee’s willingness to serve or continue to serve on the Board.]2 
 NOW, THEREFORE, in consideration of the premises and the covenants contained herein, the Company and Indemnitee do hereby covenant and agree as follows: 

Section 1. Services to the Company. Indemnitee agrees to serve and/or continue to serve as an Indemnifiable Person in the
capacity or capacities in which Indemnitee currently serves the Company as an Indemnifiable Person, and any additional capacity in which Indemnitee may agree to serve, until such time as Indemnitee’s service in a particular capacity shall end
according to the terms of an agreement, the Company’s Charter or Bylaws, governing law, or otherwise. Nothing contained in this Agreement is intended to create any right to continued employment or other form of service for the Company or a
Subsidiary or Enterprise of the Company by Indemnitee. 
 Section 2. Definitions. 

As used in this Agreement: 
 (a) “Change in Control” shall mean (i) any “person” (as such term is used in Sections 13(d) and 14(d) of the Securities Exchange Act of 1934, as amended), other than a
Subsidiary or a trustee or other fiduciary holding securities under an employee benefit plan of the Company or Subsidiary, who becomes the “beneficial owner” (as defined in Rule 13d-3 under said Act), directly or indirectly, of
securities of the Company representing 20% or more of the total voting power represented by the Company’s then outstanding capital stock; (ii) during any period of two (2) consecutive years, individuals who at the beginning of such
period constitute the Board of Directors and any new director whose election by the Board of Directors or nomination for election by the Company’s stockholders was approved by a vote of at least two-thirds (2/3) of the directors then still in office who either were directors at the beginning of the period or whose election or
nomination for election was previously so approved, cease for any reason to constitute a majority thereof; or (iii) the stockholders of the Company approve a merger or consolidation of the Company with any other corporation, other than a merger
or consolidation that would result in the outstanding capital stock of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into capital stock of the surviving entity) at
least 80% of the total voting power represented by the capital stock of the Company or such surviving entity outstanding immediately after such merger or consolidation, or the stockholders of the Company approve a plan of complete liquidation of the
Company or an agreement for the sale or disposition by the Company (in one transaction or a series of transactions) of all or substantially all of the Company’s assets. 

  
  

	2 	 Note: bracketed provisions to be included for directors affiliated with funds. 

2 

	

 (b) “Enterprise” shall mean any corporation (other than the Company),
partnership, joint venture, trust, employee benefit plan, limited liability company or other legal entity of which Indemnitee is, was or will be serving at the request, election or direction of the Company as a director, manager, officer, employee,
agent, trustee, member, partner, agent, attorney, consultant, member of the entity’s governing body, fiduciary or in any other similar capacity. 
 (c) “Expenses” shall mean all direct and indirect costs of any type or nature whatsoever (including, without limitation, all attorneys’ fees and related disbursements, and other
out-of-pocket costs), paid or incurred by Indemnitee in connection with either the investigation, defense or appeal of, or being a witness in a Proceeding (as defined below), or establishing or enforcing a right to indemnification under this
Agreement, the DGCL or otherwise; provided, however, that Expenses shall not include any judgments, fines, ERISA excise taxes or penalties or amounts paid in settlement of a Proceeding. 

(d) “Indemnifiable Event” means any event or occurrence related to Indemnitee’s service for the Company or any
Subsidiary or Enterprise as an Indemnifiable Person, or by reason of anything done or not done, or any act or omission, by Indemnitee in any such capacity. 
 (e) “Indemnifiable Person” means any person who is or was a director, officer, employee, attorney, trustee, manager, member, partner, consultant, member of an entity’s governing body
(whether constituted as a board of directors, board of managers, general partner or otherwise) or other agent or fiduciary of the Company or a Subsidiary or Enterprise of the Company. 

(f) “Independent Counsel” means a law firm, or a partner (or, if applicable, member or shareholder) of such a law firm,
that is experienced in matters of Delaware corporation law and neither presently is performing, nor in the five (5) years preceding the time in question has performed services for: (i) the Company, any Subsidiary, any Enterprise or
Indemnitee; or (ii) any other party to the Proceeding giving rise to a claim for indemnification hereunder. Notwithstanding the foregoing, the term “Independent Counsel” shall not include any person who, under the applicable standards
of professional conduct then prevailing, would have a conflict of interest in representing either the Company or Indemnitee in an action to determine Indemnitee’s rights under this Agreement. 

(g) “Other Liabilities” means any and all liabilities of any type whatsoever (including, but not limited to, judgments,
fines, penalties, ERISA (or other benefit plan related) excise taxes or penalties, and amounts paid in settlement and all interest, taxes, assessments and other charges paid or payable in connection with or in respect of any such judgments, fines,
penalties, ERISA (or other benefit plan related) excise taxes or penalties, or amounts paid in settlement). 
 (h) The term
“Proceeding” shall include any threatened, pending or completed action, suit, arbitration, alternate dispute resolution mechanism, investigation, inquiry, 

  
 3 

 
administrative hearing or any other actual, threatened or completed proceeding, whether brought in the right of the Company or otherwise and whether civil, criminal, administrative, regulatory,
investigative or any other type whatsoever, and whether formal or informal, and including any appeal thereof. 
 (i)
“Subsidiary” means any corporation of which more than 50% of the outstanding voting securities is owned directly or indirectly by the Company. 
 Section 3. Agreement to Indemnify. In the event Indemnitee is a person who was or is a party to or witness in or is threatened to be made a party to or witness in or otherwise involved in any
Proceeding by reason of an Indemnifiable Event, the Company shall indemnify Indemnitee from and against any and all Expenses and Other Liabilities incurred by Indemnitee in connection with (including in preparation for) such Proceeding to the
fullest extent not prohibited by the provisions of the Charter, the Bylaws and the DGCL, as the same may be amended from time to time (but only to the extent that such amendment permits the Company to provide broader indemnification rights than the
Charter, the Bylaws or the DGCL permitted prior to the adoption of such amendment). 
 Section 4. Partial
Indemnification. If Indemnitee is entitled under any provision of this Agreement to indemnification by the Company for some or a portion of any Expenses or Other Liabilities but not entitled, however, to indemnification for the total amount of
such Expenses or Other Liabilities, the Company shall nevertheless indemnify Indemnitee for such total amount except as to the portion thereof to which indemnification is prohibited by the provisions of the Charter, Bylaws or the DGCL. In any review
or Proceeding to determine the extent of indemnification, the Company shall bear the burden to establish, by clear and convincing evidence, the lack of a successful resolution of a particular claim, issue or matter and which amounts sought in
indemnity are allocable to claims, issues or matters which were not successfully resolved. For purposes of this Section and without limitation, the termination of any claim, issue or matter in such a Proceeding by dismissal, with or without
prejudice, shall be deemed to be a successful result as to such claim, issue or matter. 
 Section 5. Exclusions.
Notwithstanding any provision in this Agreement to the contrary, the Company shall not be obligated under this Agreement: 
 (a) to indemnify for amounts otherwise indemnifiable hereunder (or for which advancement is provided hereunder) if and to the extent such amounts have been paid directly to Indemnitee (or paid directly to
a third party on Indemnitee’s behalf) under any insurance policy, contract, agreement or otherwise[; provided that the foregoing shall not affect the rights of Indemnitee or the Fund Indemnitors as set forth in Section 11(c)]; 

(b) to indemnify Indemnitee for an accounting of profits made from the purchase and sale (or sale and purchase) by Indemnitee of
securities of the Company within the meaning of Section 16(b) of the Securities Exchange Act of 1934, as amended, or similar provisions of state statutory law or common law; 

  
 4 

 (c) to indemnify for any reimbursement of, or payment to, the Company by Indemnitee of any
bonus or other incentive-based or equity-based compensation or of any profits realized by Indemnitee from the sale of securities of the Company, as required in each case pursuant to Section 304 of the Sarbanes-Oxley Act of 2002
(“SOX”) or the payment to the Company of profits arising from the purchase and sale by Indemnitee of securities in violation of Section 306 of SOX); 
 (d) to indemnify or advance Expenses to Indemnitee with respect to any Proceeding, or part thereof, brought voluntarily by Indemnitee (and not by way of defense) except (i) where the Board has
consented to the initiation of such Proceeding or part thereof, (ii) with respect to Proceedings brought to establish or enforce a right to indemnification under this Agreement, any other statute or law, as permitted under the DGCL, or
otherwise, or (iii) with respect to Proceedings brought to discharge Indemnitee’s fiduciary responsibilities, whether under ERISA or otherwise, but such indemnification or advancement of Expenses may be provided by the Company in specific
cases if the Board finds it to be appropriate; provided, however, that nothing in this Section 7(d) shall prevent Indemnitee from asserting counterclaims or affirmative defenses in an action brought against Indemnitee; or

 (e) to indemnify Indemnitee for Other Liabilities if such indemnification is prohibited by applicable law (as such law exists
at the time indemnification would otherwise be required pursuant to this Agreement). 
 Section 6. Advancement of
Expenses. The Company shall advance all Expenses actually and reasonably incurred by Indemnitee in connection with (including in preparation for) any Proceeding related to an Indemnifiable Event, and such advancement shall be made within thirty
(30) days after the receipt by the Company of a statement or statements requesting such advances (which shall include invoices received by Indemnitee in connection with such Expenses but, in the case of invoices in connection with legal
services, any references to legal work performed or to expenditures made that would cause Indemnitee to waive any privilege accorded by applicable law shall not be included with the invoice) from time to time, whether prior to or after final
disposition of any Proceeding. Advances shall be unsecured and interest free. Advances shall be made without regard to Indemnitee’s ability to repay the expenses and without regard to Indemnitee’s ultimate entitlement to indemnification
under the other provisions of this Agreement. Indemnitee hereby undertakes to repay such amounts advanced if, and only if and to the extent that, it shall ultimately be determined that Indemnitee is not entitled to be indemnified by the Company
under the provisions of this Agreement, the Charter, the Bylaws or the DGCL. The right to advances under this paragraph shall in all events continue until final disposition of any Proceeding, including any appeal therein. 

Section 7. Procedure for Notification and Defense of Claim. 

(a) Promptly following the time that Indemnitee has notice of the commencement of or the threat of commencement of any Proceeding,
Indemnitee shall, if Indemnitee believes that indemnification or advancement of Expenses with respect thereto may be sought from the Company under this Agreement, notify the Company of the commencement or threat of commencement thereof, and shall
provide the Company with all documentation 

  
 5 

 
related thereto as reasonably requested by the Company. The failure of Indemnitee to so notify the Company shall not relieve the Company of any obligation which it may have to Indemnitee under
this Agreement or otherwise except to the extent that the Company is materially prejudiced in its defense of such Proceeding as a result of such failure. 
 (b) In the event that the Company shall be obligated hereunder to provide indemnification for or make any advancement of Expenses with respect to any Proceeding, the Company shall be entitled to assume
the defense of such Proceeding, with counsel approved by Indemnitee (which approval shall not be unreasonably withheld or delayed) upon the delivery to Indemnitee of written notice of the Company’s election to do so. Such defense by the Company
may include the representation of two or more parties by one attorney or law firm as permitted under the ethical rules and legal requirements related to joint representations. After delivery of such notice, approval of such counsel by Indemnitee and
the retention of such counsel by the Company, the Company will not be liable to Indemnitee under this Agreement for any fees or expenses of separate counsel subsequently employed by or on behalf of Indemnitee with respect to the same Proceeding;
provided that (i) Indemnitee shall have the right to employ separate counsel in any such Proceeding at Indemnitee’s expense and (ii) if (A) the employment of separate counsel by Indemnitee has been previously authorized by
the Company, (B) Indemnitee shall have reasonably concluded that there may be a conflict of interest between the Company and Indemnitee in the conduct of such defense, or (C) the Company shall not continue to retain such counsel to defend
such Proceeding, then the reasonable fees and expenses actually and reasonably incurred by Indemnitee with respect to his or her separate counsel shall be Expenses hereunder. 
 (c) In the event that the Company does not assume the defense in a Proceeding pursuant to paragraph (b) above, then the Company will be entitled to participate in the Proceeding at its own expense.

 (d) The Company shall not be liable to indemnify Indemnitee under this Agreement or otherwise for any amounts paid in
settlement of any Proceeding effected without its prior written consent (which consent shall not be unreasonably withheld or delayed); provided, however, that if a Change in Control has occurred, the Company shall be liable for indemnification of
Indemnitee for amounts paid in settlement if the Independent Counsel has approved the settlement. Neither the Company nor any Subsidiary or Enterprise of the Company shall, without the prior written consent of Indemnitee (which consent shall not be
unreasonably withheld or delayed), enter into a settlement of any Proceeding that might result in the imposition of any Expense, Other Liability, penalty, limitation or detriment on Indemnitee, whether indemnifiable under this Agreement or
otherwise, including an admission of fault of Indemnitee, any non-monetary remedy imposed on Indemnitee or any monetary damages for which Indemnitee is not wholly and actually indemnified hereunder or, with respect to any Proceeding with respect to
which Indemnitee may be or is made a party or may be otherwise entitled to seek indemnification hereunder, does not include the full release of Indemnitee from all liability in respect of such Proceeding. 

  
 6 

 Section 8. Procedure Upon Application for Indemnification. 

(a) To the extent that Indemnitee shall have been successful on the merits in any Proceeding to which it is a party or a participant or
in defense of any claim, issue or matter therein, the Company shall indemnify Indemnitee against Expenses, and no determination shall be required to be made with respect to Indemnitee’s entitlement to indemnification hereunder. The Company also
shall indemnify Indemnitee if he or she has not failed to meet the applicable standard of conduct for indemnification. In cases where the first sentence of this Section 8(a) is inapplicable, a determination with respect to Indemnitee’s
entitlement to indemnification hereunder shall be made in the specific case by one of the following methods which shall be at the election of Indemnitee, in his sole discretion: (i) by a majority vote of the disinterested directors, even though
less than a quorum; (ii) by a committee of disinterested directors designated by a majority vote of the disinterested directors, even though less than a quorum; or (iii) by Independent Counsel selected by Indemnitee and approved by the
Board of Directors (which approval may not be unreasonably withheld or delayed) in a written opinion to the Board. If Indemnitee is an officer or director of the Company at the time that Indemnitee is making his or her election, then Indemnitee
shall not select Independent Counsel to make the determination unless there are no disinterested directors or unless the disinterested directors agree to the selection of Independent Counsel. The selected forum shall be referred to herein as the
“Reviewing Party.” Notwithstanding the foregoing, following any Change in Control, the Reviewing Party shall be Independent Counsel selected in the manner provided above in this Section 8(a). For purposes hereof, disinterested
directors are those members of the Board who are not parties to the Proceeding in respect of which indemnification is sought. In the case that the Reviewing Party is the Independent Counsel, a copy of Independent Counsel’s written opinion shall
be delivered to Indemnitee and, if it is so determined that Indemnitee is entitled to indemnification, payment to Indemnitee shall be made within thirty (30) days after such determination to the extent any such amounts have not been previously
advanced by the Company. As soon as practicable, and in no event later than thirty (30) days after receipt by the Company of written notice of Indemnitee’s choice of forum pursuant to this Section 8(a), the Company and Indemnitee
shall each submit to the Reviewing Party such information as they believe is appropriate for the Reviewing Party to consider. The Reviewing Party shall arrive at its decision within a reasonable period of time following the receipt of all such
information from the Company and Indemnitee, but in no event later than thirty (30) days following the receipt of all such information, provided that the time by which the Reviewing Party must reach a decision may be extended by mutual
agreement of the Company and Indemnitee. Any out-of-pocket costs or expenses (including reasonable attorneys’ fees and disbursements) actually and reasonably incurred by Indemnitee in so cooperating with the Independent Counsel shall be borne
by the Company (irrespective of the determination as to Indemnitee’s entitlement to indemnification) and the Company hereby indemnifies and agrees to hold Indemnitee harmless therefrom. Further, the Company agrees to pay the reasonable fees and
expenses of the Independent Counsel. 
 (b) The Company shall indemnify Indemnitee against all Expenses incurred by Indemnitee
in connection with any hearing or Proceeding under this Section 8 involving Indemnitee, and against all Expenses incurred by Indemnitee in connection with any other Proceeding between the Company and Indemnitee involving the interpretation or
enforcement of the rights of Indemnitee under this Agreement unless a court of competent jurisdiction finds that 

  
 7 

 
each of the material claims of Indemnitee in any such Proceeding was frivolous or made in bad faith . 
 Section 9. Presumptions and Effect of Certain Proceedings. 
 (a) To
the extent permitted by applicable law, in making a determination with respect to entitlement to indemnification hereunder, it shall be presumed that Indemnitee is entitled to indemnification under this Agreement if Indemnitee has submitted a
request for indemnification in accordance with Section 9(a) of this Agreement, and the Company shall have the burden of proof to overcome that presumption in connection with the making of any determination contrary to that presumption. Neither
(i) the failure of the Company or of Independent Counsel to have made a determination prior to the commencement of any action pursuant to this Agreement that indemnification is proper in the circumstances because Indemnitee has met the
applicable standard of conduct, nor (ii) an actual determination by the Company or by Independent Counsel that Indemnitee has not met such applicable standard of conduct, shall be a defense to the action or create a presumption that Indemnitee
has not met the applicable standard of conduct. 
 (b) The termination of any Proceeding or of any claim, issue or matter
therein, by judgment, order, settlement or conviction, or upon a plea of guilty, nolo contendere or its equivalent, shall not (except as otherwise expressly provided in this Agreement) of itself adversely affect the right of Indemnitee to
indemnification or create a presumption that Indemnitee did not act in good faith and in a manner which he or she reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that
Indemnitee had reasonable cause to believe that his or her conduct was unlawful. 
 (c) The knowledge and/or actions, or failure
to act, of any director, manager, officer, employee, agent or trustee of the Company, any subsidiary of the Company, or any Enterprise shall not be imputed to Indemnitee for purposes of determining the right to indemnification under this Agreement.

 (d) Indemnitee shall be deemed to have acted in good faith if Indemnitee’s action is based on the records or books of
account of the Company, including financial statements, or on information supplied to Indemnitee by the officers of the Company in the course of their duties, or on the advice of legal counsel for the Company or on information or records given or
reports made to the Company by an independent certified public accountant or by an appraiser or other expert selected by the Company. Whether or not the foregoing provisions of this Section 9(d) are satisfied, it shall in any event be presumed
that Indemnitee has at all times acted in good faith and in a manner he reasonably believed to be in or not opposed to the best interests of the Company or, with respect to any criminal Proceeding, that Indemnitee had reasonable cause to believe
that his conduct was unlawful. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion by clear and convincing evidence. 
 (e) The Company acknowledges that a settlement or other disposition short of final judgment may be successful if it permits a party to avoid expense, delay, distraction, disruption and uncertainty. In the
event that any Proceeding to which Indemnitee is a party is 

  
 8 

 
resolved in any manner other than by adverse judgment against Indemnitee (including, without limitation, settlement of such Proceeding with or without payment of money or other consideration), it
shall be presumed that Indemnitee has been successful on the merits or otherwise in such Proceeding. Anyone seeking to overcome this presumption shall have the burden of proof and the burden of persuasion by clear and convincing evidence.

 Section 10. Remedies of Indemnitee. 
 (a) Notwithstanding a final determination by any Reviewing Party that Indemnitee is not entitled to indemnification with respect to a specific Proceeding, Indemnitee shall be entitled to an adjudication
by the Delaware Court of his or her entitlement to such indemnification, as further described in Section 10(b). Indemnitee shall have the right to apply to the Delaware Court for the purpose of enforcing Indemnitee’s right to
indemnification pursuant to this Agreement. Further, the parties recognize that if any provision of this Agreement is violated by the Company, including with respect to compliance with the time periods specified herein, Indemnitee may be without an
adequate remedy at law. Accordingly, in the event of any such violation, Indemnitee shall be entitled, if Indemnitee so elects, to institute Proceedings, either in law or at equity, to obtain damages, to enforce specific performance, to enjoin such
violation, or to obtain any relief or any combination of the foregoing as Indemnitee may elect to pursue. 
 (b) In the event
that a final determination by any Reviewing Party that Indemnitee is not entitled to indemnification, any judicial proceeding commenced pursuant to this Section 10 shall be conducted in all respects as a de novo trial on the merits and
Indemnitee shall not be prejudiced by reason of that adverse determination. In any judicial proceeding commenced pursuant to this Section 10, the Company shall have the burden of proving Indemnitee is not entitled to indemnification or
advancement, as the case may be. 
 (c) The Company shall be precluded from asserting in any judicial proceeding commenced
pursuant to this Section 10 that the procedures and presumptions of this Agreement are not valid, binding and enforceable and shall stipulate in any such court that the Company is bound by all the provisions of this Agreement. 

(d) Notwithstanding anything in this Agreement to the contrary, no determination as to entitlement to indemnification under this
Agreement shall be required to be made prior to the final disposition of the Proceeding, including any appeal therein. 
 Section 11. Non-exclusivity; Insurance; [Primacy of
Indemnification;] Subrogation. 
 (a) The rights of indemnification and to receive advancement as provided
by this Agreement shall not be deemed exclusive of any other rights to which Indemnitee may at any time be entitled under applicable law, the Charter, the Bylaws, any agreement, a vote of stockholders or a resolution of directors, or otherwise. To
the extent that a change in Delaware law, whether by statute or judicial decision, permits greater indemnification or advancement than would be afforded currently under the Charter, Bylaws and this Agreement, it is the intent of the

  

	

 9 

 
parties hereto that Indemnitee shall enjoy by this Agreement the greater benefits so afforded by such change. No right or remedy herein conferred is intended to be exclusive of any other right or
remedy, and every other right and remedy shall be cumulative and in addition to every other right and remedy given hereunder or now or hereafter existing at law or in equity or otherwise. The assertion or employment of any right or remedy hereunder,
or otherwise, shall not prevent the concurrent assertion or employment of any other right or remedy. 
 (b) So long as
Indemnitee shall continue to serve the Company or a Subsidiary or Enterprise of the Company as an Indemnifiable Person and thereafter so long as Indemnitee shall be subject to any possible claim or threatened, pending or completed Proceeding as a
result of an Indemnifiable Event, the Company shall use reasonable efforts to maintain in full force and effect for the benefit of Indemnitee as an insured an insurance policy or policies providing liability insurance for directors, managers,
officers, employees, agents or trustees of the Company or of any Subsidiary or Enterprise issued by one or more reputable insurers and having the policy amount and deductible deemed appropriate by the Board. If, at the time of the receipt of a
notice of a claim pursuant to the terms hereof, the Company has director and officer liability insurance in effect, the Company shall give prompt notice of the commencement of such proceeding to the insurers in accordance with the procedures set
forth in the respective policies. The Company shall thereafter take all reasonable action to cause such insurers to pay, on behalf of Indemnitee, all amounts payable as a result of such Proceeding in accordance with the terms of such policies. The
purchase, establishment and maintenance of any such insurance or other arrangements shall not in any way limit or affect the rights and obligations of the Company or of Indemnitee under this Agreement except as expressly provided herein, and the
execution and delivery of this Agreement by the Company and Indemnitee shall not in any way limit or affect the rights and obligations of the Company or the other party or parties thereto under any such insurance or other arrangement. 

(c) [The Company hereby acknowledges that Indemnitee has certain rights to indemnification, advancement of expenses and/or insurance
provided by [Name of Fund/Sponsor] and certain of its affiliates (collectively, the “Fund Indemnitors”). The Company hereby agrees (i) that it is the indemnitor of first resort (i.e., its obligations to Indemnitee are
primary and any obligation of the Fund Indemnitors to advance expenses or to provide indemnification for the same expenses or liabilities incurred by Indemnitee are secondary), (ii) that it shall be required to advance the full amount of
expenses incurred by Indemnitee and shall be liable for the full amount of all Expenses and Other Liabilities to the extent legally permitted and as required by the terms of this Agreement and the Charter and/or Bylaws (or any other agreement
between the Company and Indemnitee), without regard to any rights Indemnitee may have against the Fund Indemnitors, and (iii) that it irrevocably waives, relinquishes and releases the Fund Indemnitors from any and all claims against the Fund
Indemnitors for contribution, subrogation or any other recovery of any kind in respect thereof. The Company further agrees that no advancement or payment by the Fund Indemnitors on behalf of Indemnitee with respect to any claim for which Indemnitee
has sought indemnification from the Company shall affect the foregoing and the Fund Indemnitors shall have a right of contribution and/or be subrogated to the extent of such advancement or payment to all of the rights of recovery of Indemnitee
against the 

  
 10 

 
Company. The Company and Indemnitee agree that the Fund Indemnitors are express third party beneficiaries of the terms of this Section 11(c).] 

(d) [Except as provided in paragraph (c) above,] [I/i]n the event of any payment under this Agreement, the Company shall be
subrogated to the extent of such payment to all of the rights of recovery of Indemnitee [(other than against the Fund Indemnitors)], who shall execute all papers required and take all action necessary to secure such rights, including execution of
such documents as are necessary to enable the Company to bring suit to enforce such rights. 
 (e) [Except as provided in
paragraph (c) above,] [T/t]he Company’s obligation to provide indemnification or advancement hereunder to Indemnitee who is or was serving at the request of the Company as a director, manager, officer, employee, agent or trustee of any
other Enterprise shall be reduced by any amount Indemnitee has actually received as indemnification or advancement from such other Enterprise. 
 Section 12. Survival of Rights; Successors and Assigns. The rights conferred on Indemnitee by this Agreement shall continue after Indemnitee has ceased to serve the Company or a Subsidiary or
Enterprise as an Indemnifiable Person and shall inure to the benefit of Indemnitee and his or her heirs, executors and administrators. This Agreement shall be binding upon the Company and its successors and assigns . The Company shall require and
cause any successor (whether direct or indirect by purchase, merger, consolidation or otherwise) to all, substantially all or a substantial part, of the business and/or assets of the Company, by written agreement in form and substance satisfactory
to Indemnitee, expressly to assume and agree to perform this Agreement in the same manner and to the same extent that the Company would be required to perform if no such succession had taken place. 

Section 13. Severability. If any provision or provisions of this Agreement shall be held to be invalid, illegal or
unenforceable for any reason whatsoever: (a) the validity, legality and enforceability of the remaining provisions of this Agreement (including, without limitation, each portion of any section of this Agreement containing any such provision
held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall not in any way be affected or impaired thereby and shall remain enforceable to the fullest extent permitted by law; (b) such provision or
provisions shall be deemed reformed to the extent necessary to conform to applicable law and to give the maximum effect to the intent of the parties hereto; and (c) to the fullest extent possible, the provisions of this Agreement (including,
without limitation, each portion of any section of this Agreement containing any such provision held to be invalid, illegal or unenforceable, that is not itself invalid, illegal or unenforceable) shall be construed so as to give effect to the intent
manifested thereby. 
 Section 14. Enforcement. 

(a) The Company expressly confirms and agrees that it has entered into this Agreement and assumed the obligations imposed on it hereby in
order to induce Indemnitee to serve or continue to serve as a director or officer of the Company, and the Company 

  
 11 

 
acknowledges that Indemnitee is relying upon this Agreement in serving as a director or officer of the Company. 
 (b) This Agreement constitutes the entire agreement between the parties hereto with respect to the subject matter hereof and supersedes all prior agreements and understandings, oral, written and implied,
between the parties hereto with respect to the subject matter hereof; provided, however, that this Agreement is a supplement to and in furtherance of the Charter, the Bylaws and applicable law, and shall not be deemed a substitute
therefor, nor to diminish or abrogate any rights of Indemnitee thereunder. 
 (c) The Company shall not seek from a court, or
agree to, a “bar order” which would have the effect of prohibiting or limiting the Indemnitee’s rights to receive advancement of expenses under this Agreement. 
 Section 15. Modification and Waiver. No supplement, modification or amendment, or waiver of any provision, of this Agreement shall be binding unless executed in writing by the parties thereto.
No waiver of any of the provisions of this Agreement shall be deemed or shall constitute a waiver of any other provisions of this Agreement nor shall any waiver constitute a continuing waiver. No supplement, modification or amendment of this
Agreement or of any provision hereof shall limit or restrict any right of Indemnitee under this Agreement in respect of any action taken or omitted by such Indemnitee prior to such supplement, modification or amendment. 

Section 16. Notices. All notices, requests, demands and other communications under this Agreement shall be in writing and
shall be deemed to have been duly given if (a) delivered by hand and receipted for by the party to whom said notice or other communication shall have been directed, (b) mailed by certified or registered mail with postage prepaid, on the
third business day after the date on which it is so mailed, (c) mailed by reputable overnight courier and receipted for by the party to whom said notice or other communication shall have been directed or (d) sent by facsimile transmission,
with receipt of oral confirmation that such transmission has been received: 
 (a) If to Indemnitee, at such
address as Indemnitee shall provide to the Company. 
 (b) If to the Company to: 

      Imperva, Inc. 

      3400 Bridge Parkway, Suite 200 

      Redwood Shores, CA 94065 

      Attention: Chief Executive Officer 

  
 12 

       With a copy to: 

      Imperva, Inc. 

      3400 Bridge Parkway, Suite 200 

      Redwood Shores, CA 94065 

      Attention: General Counsel 
 or to any other address as may have been furnished to Indemnitee by the Company. 

Section 17. Contribution. To the fullest extent permissible under applicable law, if the indemnification provided for in this
Agreement is unavailable to Indemnitee for any reason whatsoever, the Company, in lieu of indemnifying Indemnitee, shall contribute to the amount incurred by Indemnitee, whether for judgments, fines, penalties, excise taxes, amounts paid or to be
paid in settlement and/or for Expenses, in connection with any Proceeding in such proportion as is deemed fair and reasonable in light of all of the circumstances in order to reflect (i) the relative benefits received by the Company and
Indemnitee in connection with the event(s) and/or transaction(s) giving rise to such Proceeding; and/or (ii) the relative fault of the Company (and its directors, officers, employees and agents) and Indemnitee in connection with such event(s)
and/or transactions. 
 Section 18. Internal Revenue Code Section 409A. The Company intends for this Agreement
to comply with the Indemnification exception under Section 1.409A-1(b)(10) of the regulations promulgated under the Internal Revenue Code of 1986, as amended (the “Code”), which provides that indemnification of, or the purchase
of an insurance policy providing for payments of, all or part of the expenses incurred or damages paid or payable by the Indemnitee with respect to a bona fide claim against the Indemnitee or the Company do not provide for a deferral of
compensation, subject to Section 409A of the Code, where such claim is based on actions or failures to act by the Indemnitee in his capacity as a service provider of the Company. The parties intend that this Agreement be interpreted and
construed with such intent. 
 Section 19. Applicable Law and Consent to Jurisdiction. This Agreement and the legal
relations among the parties shall be governed by, and construed and enforced in accordance with, the laws of the State of Delaware, without regard to its conflict of laws rules. The Company and Indemnitee hereby irrevocably and unconditionally
(i) agree that any action or proceeding arising out of or in connection with this Agreement shall be brought only in the Delaware Court, and not in any other state or federal court in the United States of America or any court in any other
country, (ii) consent to submit to the exclusive jurisdiction of the Delaware Court for purposes of any action or proceeding arising out of or in connection with this Agreement, (iii) consent to service of process at the address set forth
in Section 16 of this Agreement with the same legal force and validity as if served upon such party personally within the State of Delaware, (iv) waive any objection to the laying of venue of any such action or proceeding in the Delaware
Court, and (v) waive, and agree not to plead or to make, any claim that any such action or proceeding brought in the Delaware Court has been brought in an improper or inconvenient forum. 

Section 20. Headings. The headings of the paragraphs of this Agreement are inserted for convenience only and shall not be
deemed to constitute part of this Agreement or to affect the construction thereof. 

  
 13 

 Section 21. Identical Counterparts. This Agreement may be executed in one or
more counterparts, each of which shall for all purposes be deemed to be an original but all of which together shall constitute one and the same Agreement. Only one such counterpart signed by the party against whom enforceability is sought needs to
be produced to evidence the existence of this Agreement. 
 [Remainder of Page Intentionally Left Blank] 

  
 14 

 IN WITNESS WHEREOF, the parties have caused this Agreement to be signed as of the day and
year first above written. 
  

			
	IMPERVA, INC.
		
	By:	 	 
		 	Name:
		 	Title:
		
		 	 
		 	[Name of Indemnitee]

 [SIGNATURE PAGE TO INDEMNIFICATION
AGREEMENT]

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