Document

Exhibit 10.4

SIMILARWEB LTD.

2021 EMPLOYEE SHARE PURCHASE PLAN

ARTICLE I.

PURPOSE

1.1 The purpose of this Plan is to assist Eligible Employees of the Company and its Designated Subsidiaries in acquiring a share ownership interest in the Company.

1.2 The Plan consists of two components: (i) the Section 423 Component and (ii) the Non-Section 423 Component. The Section 423 Component is intended to qualify as an “employee stock purchase plan” under Section 423 of the Code and shall be administered, interpreted and construed in a manner consistent with the requirements of Section 423 of the Code. The Non-Section 423 Component authorizes the grant of rights which need not qualify as rights granted pursuant to an “employee stock purchase plan” under Section 423 of the Code. Rights granted under the Non-Section 423 Component shall be granted pursuant to separate Offerings containing such sub-plans, appendices, rules or procedures as may be adopted by the Administrator and designed to achieve tax, securities laws or other objectives for Eligible Employees and Designated Subsidiaries but shall not be intended to qualify as an “employee stock purchase plan” under Section 423 of the Code. Except as otherwise determined by the Administrator or provided herein, the Non-Section 423 Component will operate and be administered in the same manner as the Section 423 Component. Offerings intended to be made under the Non-Section 423 Component will be designated as such by the Administrator at or prior to the time of such Offering.

1.3 For purposes of this Plan, the Administrator may designate separate Offerings under the Plan in which Eligible Employees will participate. The terms of these Offerings need not be identical, even if the dates of the applicable Offering Period(s) in each such Offering are identical, provided that the terms of participation are the same within each separate Offering under the Section 423 Component (as determined under Section 423 of the Code). Solely by way of example and without limiting the foregoing, the Company could, but shall not be required to, provide for simultaneous Offerings under the Section 423 Component and the Non-Section 423 Component of the Plan.

ARTICLE II.

DEFINITIONS AND CONSTRUCTION

Wherever the following terms are used in the Plan they shall have the meanings specified below, unless the context clearly indicates otherwise.

2.1 “Administrator” means the entity, including any committee specifically designated by the Board, that conducts the general administration of the Plan as provided in Article XI.

2.2 “Affiliate” means any entity in which the Company has an equity or other ownership interests.

2.3 “Agent” means the brokerage firm, bank or other financial institution, entity or person(s), if any, engaged, retained, appointed or authorized to act as the agent of the Company or an Employee with regard to the Plan.

2.4 “Applicable Law” means the requirements relating to the administration of equity incentive plans under U.S. federal and state securities, tax and other applicable laws, rules and regulations, the applicable rules of any stock exchange or quotation system on which Shares are listed or quoted and the applicable laws and rules of any non-U.S. country or other jurisdiction where rights under this Plan are granted.

2.5 “Board” means the Board of Directors of the Company.

2.6 “Code” means the U.S. Internal Revenue Code of 1986, as amended, and the regulations issued thereunder.

2.7 “Company” means Similarweb Ltd., an Israeli company, or any successor.

2.8 “Compensation” of an Eligible Employee means, unless otherwise determined by the Administrator, the gross base compensation received by such Eligible Employee as compensation for services to the Company or any Designated Subsidiary, including overtime payments and excluding sales commissions, incentive compensation, bonuses, expense reimbursements, fringe benefits and other special payments.

2.9 “Designated Subsidiary” means any Subsidiary designated by the Administrator in accordance with Section 11.2(b), such designation to specify whether such participation is in the Section 423 Component or Non-Section 423 Component. A Designated Subsidiary may participate in either the Section 423 Component or Non-Section 423 Component, but not both; provided that a Subsidiary that, for U.S. tax purposes, is disregarded from the Company or any Subsidiary that participates in the Section 423 Component shall automatically constitute a Designated Subsidiary that participates in the Section 423 Component. The designation by the Administrator of Designated Subsidiaries and changes in such designations by the Administrator shall not require shareholder approval. Only entities that are subsidiary corporations of the Company within the meaning of Section 424 of the Code may be designated as Designated Subsidiaries for purposes of the Section 423 Component, and if an entity does not so qualify, it shall automatically be deemed to be a Designated Subsidiary in the Non-Section 423 Component.

2.10 “Effective Date” means the date upon which the Plan is approved by the shareholders of the Company, provided that the Board has adopted the Plan on, or within 12 months prior to, such date.

2.11 “Eligible Employee” means:

(a) With respect to the Section 423 Component of the Plan, an Employee who does not, immediately after any rights under this Plan are granted, own (directly or through attribution) share possessing 5% or more of the total combined voting power or value of all classes of Shares and other securities of the Company, a Parent or a Subsidiary (as determined under Section 423(b)(3) of the Code). For purposes of the foregoing, the rules of Section 424(d) of the Code with regard to the attribution of share ownership shall apply in determining the share ownership of an individual, and a share that an Employee may purchase under outstanding options shall be treated as a share owned by the Employee. With respect to an Employee participating in the Non-Section 423 Component, such qualification shall not apply, unless otherwise required by Applicable Law.

(b) Notwithstanding the foregoing, the Administrator may provide in an Offering Document that an Employee shall not be eligible to participate in an Offering Period under the Section 423 Component if: (i) such Employee is a highly compensated employee within the meaning of Section 423(b)(4)(D) of the Code; (ii) such Employee has not met a service requirement designated by the Administrator pursuant to Section 423(b)(4)(A) of the Code (which service requirement may not exceed two years); (iii) such Employee’s customary employment is for twenty hours per week or less; (iv) such Employee’s customary employment is for less than five months in any calendar year; and/or (v) such Employee is a citizen or resident of a non-U.S. jurisdiction and the grant of a right to purchase Shares under the Plan to such Employee would be prohibited under the laws of such non-U.S. jurisdiction or the grant of a right to purchase Shares under the Plan to such Employee in compliance with the laws of such non-U.S. jurisdiction would cause the Plan to violate the requirements of Section 423 of the Code, as determined by the Administrator in its sole discretion; provided, further, that any exclusion in clauses (i), (ii), (iii), (iv) or (v) shall be applied in an identical manner under each Offering Period to all Employees, in accordance with Treasury Regulation Section 1.423-2(e).

(c) With respect to the Non-Section 423 Component, the foregoing rules shall apply in determining who is an “Eligible Employee,” except (i) the Administrator may limit eligibility further within the Company or a Designated Subsidiary so as to only designate some Employees of the Company or a Designated Subsidiary as Eligible Employees, and (ii) to the extent the foregoing eligibility rules are not consistent with applicable local laws, the applicable local laws shall control.

2.12 “Employee” means any individual who renders services to the Company or any Designated Subsidiary in the status of an employee, and, with respect to the Section 423 Component, a person who is an employee within the meaning of Section 3401(c) of the Code. For purposes of an individual’s participation in, or other rights under the Plan, all determinations by the Company shall be final, binding and conclusive, notwithstanding that any court of law or governmental agency subsequently makes a contrary determination. For purposes of the Plan, the employment relationship shall be treated as continuing intact while the individual is on sick leave or other leave of absence approved by the Company or Designated Subsidiary and meeting the requirements of Treasury Regulation Section 1.421-1(h)(2). Where the period of leave exceeds three (3) months and the individual’s right to reemployment is not guaranteed either by statute or by contract, the employment relationship shall be deemed to have terminated on the first day immediately following such three (3)-month period.

2.13 “Enrollment Date” means the first Trading Day of each Offering Period.

2.14 “Fair Market Value” means, as of any date, the value of Shares determined as follows: (i) if the Shares are listed on any established stock exchange, its Fair Market Value will be the closing sales price for such Shares as quoted on such exchange for such date, or if no sale occurred on such date, the last day preceding such date during which a sale occurred, as reported in The Wall Street Journal or another source the Administrator deems reliable; (ii) if the Shares are not traded on a stock exchange but are quoted on a national market or other quotation system, the closing sales price on such date, or if no sales occurred on such date, then on the last date preceding such date during which a sale occurred, as reported in The Wall Street Journal or another source the Administrator deems reliable; or (iii) without an established market for the Shares, the Administrator will determine the Fair Market Value in its discretion.

2.15 “Non-Section 423 Component” means those Offerings under the Plan, together with the sub-plans, appendices, rules or procedures, if any, adopted by the Administrator as a part of this Plan, in each case, pursuant to which rights to purchase Shares during an Offering Period may be granted to Eligible Employees that need not satisfy the requirements for rights to purchase Shares granted pursuant to an “employee stock purchase plan” that are set forth under Section 423 of the Code.

2.16 “Offering” means an offer under the Plan of a right to purchase Shares that may be exercised during an Offering Period as further described in Article IV hereof. Unless otherwise specified by the Administrator, each Offering to the Eligible Employees of the Company or a Designated Subsidiary shall be deemed a separate Offering, even if the dates and other terms of the applicable Offering Periods of each such Offering are identical, and the provisions of the Plan will separately apply to each Offering. To the extent permitted by Treas. Reg. § 1.423-2(a)(1), the terms of each separate Offering under the Section 423 Component need not be identical, provided that the terms of the Section 423 Component and an Offering thereunder together satisfy Treas. Reg. § 1.423-2(a)(2) and (a)(3).

2.17 “Offering Document” has the meaning given to such term in Section 4.1.

2.18 “Offering Period” has the meaning given to such term in Section 4.1.

2.19 “Ordinary Shares” means Ordinary Shares, par value NIS 0.01 per share, of the Company and such other securities of the Company that may be substituted therefore.

2.20 “Parent” means any corporation, other than the Company, in an unbroken chain of corporations ending with the Company if, at the time of the determination, each of the corporations other than the Company owns shares possessing 50% or more of the total combined voting power of all classes of shares in one of the other corporations in such chain.

2.21 “Participant” means any Eligible Employee who has executed a subscription agreement and been granted rights to purchase Shares pursuant to this Plan.

2.22 “Payday” means the regular and recurring established day for payment of Compensation to an Employee of the Company or any Designated Subsidiary.

2.23 “Plan” means this 2021 Employee Share Purchase Plan, including both the Section 423 Component and Non-Section 423 Component and any other sub-plans or appendices hereto, as amended from time to time.

2.24 “Purchase Date” means the last Trading Day of each Offering Period or such other date as determined by the Administrator and set forth in the Offering Document.

2.25 “Purchase Price” means the purchase price designated by the Administrator in the applicable Offering Document (which purchase price, for purposes of the Section 423 Component, shall not be less than 85% of the Fair Market Value of a Share on the Enrollment Date or on the Purchase Date, whichever is lower); provided, however, that, in the event no purchase price is designated by the Administrator in the applicable Offering Document, the purchase price for the Offering Periods covered by such Offering Document shall be 85% of the Fair Market Value of a Share on the Enrollment Date or on the Purchase Date, whichever is lower; provided, further, that the Purchase Price may be adjusted by the Administrator pursuant to Article VIII and shall not be less than the par value of a Share.

2.26 “Section 423 Component” means those Offerings under the Plan, together with the sub-plans, appendices, rules or procedures, if any, adopted by the Administrator as a part of this Plan, in each case, pursuant to which rights to purchase Shares during an Offering Period may be granted to Eligible Employees that are intended to satisfy the requirements for rights to purchase Shares granted pursuant to an “employee stock purchase plan” that are set forth under Section 423 of the Code.

2.27 “Securities Act” means the U.S. Securities Act of 1933, as amended.

2.28 “Share” means an Ordinary Share.

2.29 “Subsidiary” means any corporation, other than the Company, in an unbroken chain of corporations beginning with the Company if, at the time of the determination, each of the corporations other than the last corporation in an unbroken chain owns shares possessing 50% or more of the total combined voting power of all classes of shares in one of the other corporations in such chain; provided, however, that a limited liability company or partnership may be treated as a Subsidiary to the extent either (a) such entity is treated as a disregarded entity under Treasury Regulation Section 301.7701-3(a) by reason of the Company or any other Subsidiary that is a corporation being the sole owner of such entity, or (b) such entity elects to be classified as a corporation under Treasury Regulation Section 301.7701-3(a) and such entity would otherwise qualify as a Subsidiary. In addition, with respect to the Non-Section 423 Component, Subsidiary shall include any corporate or non-corporate entity in which the Company has a direct or indirect equity interest or significant business relationship.

2.30 “Trading Day” means a day on which national stock exchanges in the United States are open for trading.

2.31 “Treas. Reg.” means U.S. Department of the Treasury regulations.

ARTICLE III.

SHARES SUBJECT TO THE PLAN

3.1 Number of Shares

Subject to Article VIII, the aggregate number of Shares that may be issued pursuant to rights granted under the Plan shall be 2,000,000 Shares. In addition to the foregoing, subject to Article VIII, on the first day of each calendar year beginning on January 1, 2022 and ending on and including January 1, 2030, the number of Shares available for issuance under the Plan shall be increased by that number of Shares equal to the lesser of (a) 1% of the Shares outstanding on the last day of the immediately preceding calendar year, as determined on a fully diluted basis, (b) such smaller number of Shares as may be determined by the Board and (c) 3,000,000 Shares. If any right granted under the Plan shall for any reason terminate without having been exercised, the Shares not purchased under such right shall again become available for issuance under the Plan.

3.2 Shares Distributed

Any Shares distributed pursuant to the Plan may consist, in whole or in part, of authorized and unissued Shares, treasury shares or Shares purchased on the open market.

ARTICLE IV.

OFFERING PERIODS; OFFERING DOCUMENTS; PURCHASE DATES

4.1 Offering Periods

The Administrator may from time to time grant or provide for the grant of rights to purchase Shares under the Plan to Eligible Employees during one or more periods (each, an “Offering Period”) selected by the Administrator. The terms and conditions applicable to each Offering Period shall be set forth in an “Offering Document” adopted by the Administrator, which Offering Document shall be in such form and shall contain such terms and conditions as the Administrator shall deem appropriate and shall be incorporated by reference into and made part of the Plan and shall be attached hereto as part of the Plan. The provisions of separate Offerings or Offering Periods under the Plan need not be identical.

4.2 Offering Documents

Each Offering Document with respect to an Offering Period shall specify (through incorporation of the provisions of this Plan by reference or otherwise):

(a) the length of the Offering Period, which period shall not exceed twenty-seven months;

(b) the maximum number of Shares that may be purchased by any Eligible Employee during such Offering Period, which, in the absence of a contrary designation by the Administrator, shall be 700 Shares; and

ARTICLE V.

ELIGIBILITY AND PARTICIPATION

5.1 Eligibility

Any Eligible Employee who shall be employed by the Company or a Designated Subsidiary on a given Enrollment Date for an Offering Period shall be eligible to participate in the Plan during such Offering Period, subject to the requirements of this Article V and, for the Section 423 Component, the limitations imposed by Section 423(b) of the Code.

5.2 Enrollment in Plan

(a) Except as otherwise set forth in an Offering Document or determined by the Administrator, an Eligible Employee may become a Participant in the Plan for an Offering Period by delivering a subscription agreement to the Company by such time prior to the Enrollment Date for such Offering Period (or such other date specified in the Offering Document) designated by the Administrator and in such form as the Company provides.

(b) Each subscription agreement shall designate a whole percentage of such Eligible Employee’s Compensation to be withheld by the Company or the Designated Subsidiary employing such Eligible Employee on each Payday during the Offering Period as payroll deductions under the Plan. The percentage of Compensation designated by an Eligible Employee may not be less than 1% and may not be more than the maximum percentage specified by the Administrator in the applicable Offering Document (which percentage shall be 20% in the absence of any such designation) as payroll deductions. The payroll deductions made for each Participant shall be credited to an account for such Participant under the Plan and shall be deposited with the general funds of the Company.

(c) A Participant may increase or decrease the percentage of Compensation designated in his or her subscription agreement, subject to the limits of this Section 5.2, or may suspend his or her payroll deductions, at any time during an Offering Period; provided, however, that the Administrator may limit the number of changes a Participant may make to his or her payroll deduction elections during each Offering Period in the applicable Offering Document (and in the absence of any specific designation by the Administrator, a Participant shall be allowed to decrease (but not increase) his or her payroll deduction elections one time during each Offering Period). Any such change or suspension of payroll deductions shall be effective with the first full payroll period following five business days after the Company’s receipt of the new subscription agreement (or such shorter or longer period as may be specified by the Administrator in the applicable Offering Document). In the event a Participant suspends his or her payroll deductions, such Participant’s cumulative payroll deductions prior to the suspension shall remain in his or her account and shall be applied to the purchase of Shares on the next occurring Purchase Date and shall not be paid to such Participant unless he or she withdraws from participation in the Plan pursuant to Article VII.

(d) Except as otherwise set forth in an Offering Document or determined by the Administrator, a Participant may participate in the Plan only by means of payroll deduction and may not make contributions by lump sum payment for any Offering Period.

5.3 Payroll Deductions

Except as otherwise provided in the applicable Offering Document, payroll deductions for a Participant shall commence on the first Payday following the Enrollment Date and shall end on the last Payday in the Offering Period to which the Participant’s authorization is applicable, unless sooner terminated by the Participant as provided in Article VII or suspended by the Participant or the Administrator as provided in Section 5.2 and Section 5.6, respectively. Notwithstanding any other provisions of the Plan to the contrary, in non-U.S. jurisdictions where participation in the Plan through payroll deductions is prohibited, the Administrator may provide that an Eligible Employee may elect to participate through contributions to the Participant’s account under the Plan in a form acceptable to the Administrator in lieu of or in addition to payroll deductions; provided, however, that, for any Offering under the Section 423 Component, the Administrator shall take into consideration any limitations under Section 423 of the Code when applying an alternative method of contribution.

5.4 Effect of Enrollment

A Participant’s completion of a subscription agreement will enroll such Participant in the Plan for each subsequent Offering Period on the terms contained therein until the Participant either submits a new subscription agreement, withdraws from participation under the Plan as provided in Article VII or otherwise becomes ineligible to participate in the Plan.

5.5 Limitation on Purchase of Shares

An Eligible Employee may be granted rights under the Section 423 Component only if such rights, together with any other rights granted to such Eligible Employee under “employee stock purchase plans” of the Company, any Parent or any Subsidiary, as specified by Section 423(b)(8) of the Code, do not permit such employee’s rights to purchase shares of the Company or any Parent or Subsidiary to accrue at a rate that exceeds $25,000 of the fair market value of such shares (determined as of the first day of the Offering Period during which such rights are granted) for each calendar year in which such rights are outstanding at any time. This limitation shall be applied in accordance with Section 423(b)(8) of the Code.

5.6 Suspension of Payroll Deductions

Notwithstanding the foregoing, to the extent necessary to comply with Section 423(b)(8) of the Code and Section 5.5 (with respect to the Section 423 Component) or the other limitations set forth in this Plan, a Participant’s payroll deductions may be suspended by the Administrator at any time during an Offering Period. The balance of the amount credited to the account of each Participant that has not been applied to the purchase of Shares by reason of Section 423(b)(8) of the Code, Section 5.5 or the other limitations set forth in this Plan shall be paid to such Participant in one lump sum in cash as soon as reasonably practicable after the Purchase Date.

5.7 Non-U.S. Employees

In order to facilitate participation in the Plan, the Administrator may provide for such special terms applicable to Participants who are citizens or residents of a non-U.S. jurisdiction, or who are employed by a Designated Subsidiary outside of the United States, as the Administrator may consider necessary or appropriate to accommodate differences in local law, tax policy or custom. Except as permitted by Section 423 of the Code, with respect to the Section 423 Component, such special terms may not be more favorable than the terms of rights granted under the Section 423 Component to Eligible Employees who are residents of the United States. Such special terms may be set forth in an addendum to the Plan in the form of an appendix or sub-plan (which appendix or sub-plan may be designed to govern Offerings under the Section 423 Component or the Non-Section 423 Component, as determined by the Administrator). To the extent that the terms and conditions set forth in an appendix or sub-plan conflict with any provisions of the Plan, the provisions of the appendix or sub-plan shall govern. The adoption of any such appendix or sub-plan shall be pursuant to Section 11.2(f). Without limiting the foregoing, the Administrator is specifically authorized to adopt rules and procedures, with respect to Participants who are non-U.S. nationals or employed in non-U.S. jurisdictions, regarding the exclusion of particular Subsidiaries from participation in the Plan, eligibility to participate, the definition of Compensation, handling of payroll deductions or other contributions by Participants, payment of interest, conversion of local currency, data privacy security, payroll tax, withholding procedures, establishment of bank or trust accounts to hold payroll deductions or contributions.

5.8 Leave of Absence

During leaves of absence approved by the Company meeting the requirements of Treasury Regulation Section 1.421-1(h)(2) under the Code, a Participant may continue participation in the Plan by making cash payments to the Company on his or her normal Payday equal to the Participant’s authorized payroll deduction.

ARTICLE VI.

GRANT AND EXERCISE OF RIGHTS

6.1 Grant of Rights

On the Enrollment Date of each Offering Period, each Eligible Employee participating in such Offering Period shall be granted a right to purchase the maximum number of Shares specified under Section 4.2, subject to the limits in Section 5.5, and shall have the right to buy, on each Purchase Date during such Offering Period (at the applicable Purchase Price), such number of whole Shares as is determined by dividing (a) such Participant’s payroll deductions accumulated prior to such Purchase Date and retained in the Participant’s account as of the Purchase Date, by (b) the applicable Purchase Price (rounded down to the nearest Share). The right shall expire on the last day of the Offering Period.

6.2 Exercise of Rights

On each Purchase Date, each Participant’s accumulated payroll deductions and any other additional payments specifically provided for in the applicable Offering Document will be applied to the purchase of whole Shares, up to the maximum number of Shares permitted pursuant to the terms of the Plan and the applicable Offering Document, at the Purchase Price. No fractional Shares shall be issued upon the exercise of rights granted under the Plan, unless the Offering Document specifically provides otherwise. Any cash in lieu of fractional Shares remaining after the purchase of whole Shares upon exercise of a purchase right will be credited to a Participant’s account and carried forward and applied toward the purchase of whole Shares for the next following Offering Period. Shares issued pursuant to the Plan may be evidenced in such manner as the Administrator may determine and may be issued in certificated form or issued pursuant to book-entry procedures.

6.3 Pro Rata Allocation of Shares

If the Administrator determines that, on a given Purchase Date, the number of Shares with respect to which rights are to be exercised may exceed (a) the number of Shares that were available for issuance under the Plan on the Enrollment Date of the applicable Offering Period, or (b) the number of Shares available for issuance under the Plan on such Purchase Date, the Administrator may in its sole discretion provide that the Company shall make a pro rata allocation of the Shares

available for purchase on such Enrollment Date or Purchase Date, as applicable, in as uniform a manner as shall be practicable and as it shall determine in its sole discretion to be equitable among all Participants for whom rights to purchase Shares are to be exercised pursuant to this Article VI on such Purchase Date, and shall either (i) continue all Offering Periods then in effect, or (ii) terminate any or all Offering Periods then in effect pursuant to Article IX. The Company may make pro rata allocation of the Shares available on the Enrollment Date of any applicable Offering Period pursuant to the preceding sentence, notwithstanding any authorization of additional Shares for issuance under the Plan by the Company’s shareholders subsequent to such Enrollment Date. The balance of the amount credited to the account of each Participant that has not been applied to the purchase of Shares shall be paid to such Participant in one lump sum in cash as soon as reasonably practicable after the Purchase Date or such earlier date as determined by the Administrator.

6.4 Withholding

At the time a Participant’s rights under the Plan are exercised, in whole or in part, or at the time some or all of the Shares issued under the Plan is disposed of, the Participant must make adequate provision for the Company’s federal, state, or other tax withholding obligations, if any, that arise upon the exercise of the right or the disposition of the Shares. At any time, the Company may, but shall not be obligated to, withhold from the Participant’s compensation or Shares received pursuant to the Plan the amount necessary for the Company to meet applicable withholding obligations, including any withholding required to make available to the Company any tax deductions or benefits attributable to sale or early disposition of Shares by the Participant.

6.5 Conditions to Issuance of Shares

The Company shall not be required to issue or deliver any certificate or certificates for, or make any book entries evidencing, Shares purchased upon the exercise of rights under the Plan prior to fulfillment of all of the following conditions: (a) the admission of such Shares to listing on all stock exchanges, if any, on which the Shares are then listed; (b) the completion of any registration or other qualification of such Shares under any state or federal law or under the rulings or regulations of the Securities and Exchange Commission or any other governmental regulatory body, that the Administrator shall, in its absolute discretion, deem necessary or advisable; (c) the obtaining of any approval or other clearance from any state or federal governmental agency that the Administrator shall, in its absolute discretion, determine to be necessary or advisable; (d) the payment to the Company of all amounts that it is required to withhold under federal, state or local law upon exercise of the rights, if any; and (e) the lapse of such reasonable period of time following the exercise of the rights as the Administrator may from time to time establish for reasons of administrative convenience.

ARTICLE VII.

WITHDRAWAL; CESSATION OF ELIGIBILITY

7.1 Withdrawal

A Participant may withdraw all but not less than all of the payroll deductions credited to his or her account and not yet used to exercise his or her rights under the Plan at any time by giving written notice to the Company in a form acceptable to the Company no later than one week prior to the end of the Offering Period. All of the Participant’s payroll deductions credited to his or her account during an Offering Period shall be paid to such Participant as soon as reasonably practicable after receipt of notice of withdrawal and such Participant’s rights for the Offering Period shall be automatically terminated, and no further payroll deductions for the purchase of Shares shall be made for such Offering Period. If a Participant withdraws from an Offering Period, payroll deductions shall not resume at the beginning of the next Offering Period unless the Participant timely delivers to the Company a new subscription agreement.

7.2 Future Participation

A Participant’s withdrawal from an Offering Period shall not have any effect upon his or her eligibility to participate in any similar plan that may hereafter be adopted by the Company or a Designated Subsidiary or in subsequent Offering Periods that commence after the termination of the Offering Period from which the Participant withdraws.

7.3 Cessation of Eligibility

Upon a Participant’s ceasing to be an Eligible Employee for any reason, he or she shall be deemed to have elected to withdraw from the Plan pursuant to this Article VII and the payroll deductions credited to such Participant’s account during the Offering Period shall be paid to such Participant or, in the case of his or her death, to the person or persons entitled thereto under Section 12.4, as soon as reasonably practicable, and such Participant’s rights for the Offering Period shall be automatically terminated. If a Participant transfers employment from the Company or any Designated Subsidiary participating in the Section 423 Component to any Designated Subsidiary participating in the Non-Section 423 Component, such transfer shall not be treated as a termination of employment, but the Participant shall immediately cease to participate in the Section 423 Component; however, any contributions made for the Offering Period in which such transfer occurs shall be transferred to the Non-Section 423 Component, and such Participant shall immediately join the then-current Offering under the Non-Section 423 Component upon the same terms and conditions in effect for the Participant’s participation in the Section 423 Component, except for such modifications otherwise applicable for Participants in such Offering. A Participant who transfers employment from any Designated Subsidiary participating in the Non-Section 423 Component to the Company or any Designated Subsidiary participating in the Section 423 Component shall not be treated as terminating the Participant’s

employment and shall remain a Participant in the Non-Section 423 Component until the earlier of (i) the end of the current Offering Period under the Non-Section 423 Component or (ii) the Enrollment Date of the first Offering Period in which the Participant is eligible to participate following such transfer. Notwithstanding the foregoing, the Administrator may establish different rules to govern transfers of employment between entities participating in the Section 423 Component and the Non-Section 423 Component, consistent with Applicable Law, including, but not limited to, the applicable requirements of Section 423 of the Code.

ARTICLE VIII.

ADJUSTMENTS UPON CHANGES IN SHARES

8.1 Changes in Capitalization

Subject to Section 8.3, in the event that the Administrator determines that any dividend or other distribution (whether in the form of cash, Shares, other securities, or other property), change in control, reorganization, merger, amalgamation, consolidation, combination, repurchase, redemption, recapitalization, liquidation, dissolution, or sale, transfer, exchange or other disposition of all or substantially all of the assets of the Company, or sale or exchange of Shares or other securities of the Company, issuance of warrants or other rights to purchase Shares or other securities of the Company, or other similar corporate transaction or event, as determined by the Administrator, affects the Shares such that an adjustment is determined by the Administrator to be appropriate in order to prevent dilution or enlargement of the benefits or potential benefits intended by the Company to be made available under the Plan or with respect to any outstanding purchase rights under the Plan, the Administrator shall make equitable adjustments, if any, to reflect such change with respect to (a) the aggregate number and type of Shares (or other securities or property) that may be issued under the Plan (including, but not limited to, adjustments of the limitations in Section 3.1 and the limitations established in each Offering Document pursuant to Section 4.2 on the maximum number of Shares that may be purchased); (b) the class(es) and number of Shares and price per Share subject to outstanding rights; and (c) the Purchase Price with respect to any outstanding rights.

8.2 Other Adjustments

Subject to Section 8.3, in the event of any transaction or event described in Section 8.1 or any unusual or nonrecurring transactions or events affecting the Company, any Affiliate of the Company, or the financial statements of the Company or any Affiliate, or of changes in Applicable Law or accounting principles, the Administrator, in its discretion, and on such terms and conditions as it deems appropriate, is hereby authorized to take any one or more of the following actions whenever the Administrator determines that such action is appropriate in order to prevent the dilution or enlargement of the benefits or potential benefits intended to be made

available under the Plan or with respect to any right under the Plan, to facilitate such transactions or events or to give effect to such changes in laws, regulations or principles:

(a) To provide for either (i) termination of any outstanding right in exchange for an amount of cash, if any, equal to the amount that would have been obtained upon the exercise of such right had such right been currently exercisable or (ii) the replacement of such outstanding right with other rights or property selected by the Administrator in its sole discretion;

(b) To provide that the outstanding rights under the Plan shall be assumed by the successor or survivor corporation, or a parent or subsidiary thereof, or shall be substituted for by similar rights covering the shares of the successor or survivor corporation, or a parent or subsidiary thereof, with appropriate adjustments as to the number and kind of shares and prices;

(c) To make adjustments in the number and type of Shares (or other securities or property) subject to outstanding rights under the Plan and/or in the terms and conditions of outstanding rights and rights that may be granted in the future;

(d) To provide that Participants’ accumulated payroll deductions may be used to purchase Shares prior to the next occurring Purchase Date on such date as the Administrator determines in its sole discretion and the Participants’ rights under the ongoing Offering Period(s) shall be terminated; and

(e) To provide that all outstanding rights shall terminate without being exercised.

8.3 No Adjustment Under Certain Circumstances

Unless determined otherwise by the Administrator, no adjustment or action described in this Article VIII or in any other provision of the Plan shall be authorized to the extent that such adjustment or action would cause the Section 423 Component of the Plan to fail to satisfy the requirements of Section 423 of the Code.

8.4 No Other Rights

Except as expressly provided in the Plan, no Participant shall have any rights by reason of any subdivision or consolidation of shares of any class, the payment of any dividend, any increase or decrease in the number of shares of any class or any dissolution, liquidation, merger, or consolidation of the Company or any other corporation. Except as expressly provided in the Plan or pursuant to action of the Administrator under the Plan, no issuance by the Company of shares of any class, or securities convertible into shares of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number of Shares subject to outstanding rights under the Plan or the Purchase Price with respect to any outstanding rights.

ARTICLE IX.

AMENDMENT, MODIFICATION AND TERMINATION

9.1 Amendment, Modification and Termination

The Administrator may amend, suspend or terminate the Plan at any time and from time to time; provided, however, that approval of the Company’s shareholders shall be required to amend the Plan to: (a) increase the aggregate number, or change the type, of shares that may be sold pursuant to rights under the Plan under Section 3.1 (other than an adjustment as provided by Article VIII) or (b) change the corporations or classes of corporations whose employees may be granted rights under the Plan.

9.2 Certain Changes to Plan

Without shareholder consent and without regard to whether any Participant rights may be considered to have been adversely affected (and, with respect to the Section 423 Component of the Plan, after taking into account Section 423 of the Code), the Administrator shall be entitled to change the Offering Periods, limit the frequency and/or number of changes in the amount withheld from Compensation during an Offering Period, establish the exchange ratio applicable to amounts withheld in a currency other than U.S. dollars, permit payroll withholding in excess of the amount designated by a Participant in order to adjust for delays or mistakes in the Company’s processing of withholding elections, establish reasonable waiting and adjustment periods and/or accounting and crediting procedures to ensure that amounts applied toward the purchase of Shares for each Participant properly correspond with amounts withheld from the Participant’s Compensation, and establish such other limitations or procedures as the Administrator determines in its sole discretion to be advisable that are consistent with the Plan.

9.3 Actions In the Event of Unfavorable Financial Accounting Consequences

In the event the Administrator determines that the ongoing operation of the Plan may result in unfavorable financial accounting consequences, the Administrator may, in its discretion and, to the extent necessary or desirable, modify or amend the Plan to reduce or eliminate such accounting consequence including, but not limited to:

(a) altering the Purchase Price for any Offering Period including an Offering Period underway at the time of the change in Purchase Price;

(b) shortening any Offering Period so that the Offering Period ends on a new Purchase Date, including an Offering Period underway at the time of the Administrator action; and

Such modifications or amendments shall not require shareholder approval or the consent of any Participant.

9.4 Payments Upon Termination of Plan

Upon termination of the Plan, the balance in each Participant’s Plan account shall be refunded as soon as practicable after such termination, without any interest thereon, or the Offering Period may be shortened so that the purchase of Shares occurs prior to the termination of the Plan.

ARTICLE X.

TERM OF PLAN

10. The Plan shall become effective on the Effective Date. The effectiveness of the Plan shall be subject to approval of the Plan by the Company’s shareholders within twelve months before or after the date the Plan is first approved by the Board. No right may be granted under the Plan prior to such shareholder approval. No rights may be granted under the Plan during any period of suspension of the Plan or after termination of the Plan.

ARTICLE XI.

ADMINISTRATION

11.1 Administrator

Unless otherwise determined by the Board, the Administrator of the Plan shall be the Compensation Committee of the Board (or another committee or a subcommittee of the Board to which the Board delegates administration of the Plan). The Board may at any time vest in the Administrator any authority or duties for administration of the Plan. The Administrator may delegate administrative tasks under the Plan to the services of an Agent or Employees to assist in the administration of the Plan, including establishing and maintaining an individual securities account under the Plan for each Participant.

11.2 Authority of Administrator

The Administrator shall have the power, subject to, and within the limitations of, the express provisions of the Plan:

(a) To determine when and how rights to purchase Shares shall be granted and the provisions of each offering of such rights (which need not be identical).

(b) To designate from time to time which Subsidiaries of the Company shall be Designated Subsidiaries, which designation may be made without the approval of the shareholders of the Company.

(c) To impose a mandatory holding period pursuant to which Employees may not dispose of or transfer Shares purchased under the Plan for a period of time determined by the Administrator in its discretion.

(d) To construe and interpret the Plan and rights granted under it, and to establish, amend and revoke rules and regulations for its administration. The Administrator, in the exercise of this power, may correct any defect, omission or inconsistency in the Plan, in a manner and to the extent it shall deem necessary or expedient to make the Plan fully effective.

(e) To amend, suspend or terminate the Plan as provided in Article IX.

(f) Generally, to exercise such powers and to perform such acts as the Administrator deems necessary or expedient to promote the best interests of the Company and its Subsidiaries and to carry out the intent that the Plan be treated as an “employee stock purchase plan” within the meaning of Section 423 of the Code for the Section 423 Component.

(g) The Administrator may adopt sub-plans applicable to particular Designated Subsidiaries or locations, which sub-plans may be designed to be outside the scope of Section 423 of the Code. The rules of such sub-plans may take precedence over other provisions of this Plan, with the exception of Section 3.1 hereof, but unless otherwise superseded by the terms of such sub-plan, the provisions of this Plan shall govern the operation of such sub-plan.

11.3 Decisions Binding

The Administrator’s interpretation of the Plan, any rights granted pursuant to the Plan, any subscription agreement and all decisions and determinations by the Administrator with respect to the Plan are final, binding, and conclusive on all parties.

ARTICLE XII.

MISCELLANEOUS

12.1 Restriction upon Assignment

A right granted under the Plan shall not be transferable other than by will or the applicable laws of descent and distribution, and is exercisable during the Participant’s lifetime only by the Participant. Except as provided in Section 12.4 hereof, a right under the Plan may not be exercised to any extent except by the Participant. The Company shall not recognize and shall be

under no duty to recognize any assignment or alienation of the Participant’s interest in the Plan, the Participant’s rights under the Plan or any rights thereunder.

12.2 Rights as a Shareholder

With respect to Shares subject to a right granted under the Plan, a Participant shall not be deemed to be a shareholder of the Company, and the Participant shall not have any of the rights or privileges of a shareholder, until such Shares have been issued to the Participant or his or her nominee following exercise of the Participant’s rights under the Plan. No adjustments shall be made for dividends (ordinary or extraordinary, whether in cash securities, or other property) or distribution or other rights for which the record date occurs prior to the date of such issuance, except as otherwise expressly provided herein or as determined by the Administrator.

12.3 Interest

No interest shall accrue on the payroll deductions or contributions of a Participant under the Plan.

12.4 Designation of Beneficiary

(a) A Participant may, in the manner determined by the Administrator, file a written designation of a beneficiary who is to receive any Shares and/or cash, if any, from the Participant’s account under the Plan in the event of such Participant’s death subsequent to a Purchase Date on which the Participant’s rights are exercised but prior to delivery to such Participant of such Shares and cash. In addition, a Participant may file a written designation of a beneficiary who is to receive any cash from the Participant’s account under the Plan in the event of such Participant’s death prior to exercise of the Participant’s rights under the Plan. If the Participant is married and resides in a community property state, a designation of a person other than the Participant’s spouse as his or her beneficiary shall not be effective without the prior written consent of the Participant’s spouse.

(b) Such designation of beneficiary may be changed by the Participant at any time by written notice to the Company. In the event of the death of a Participant and in the absence of a beneficiary validly designated under the Plan who is living at the time of such Participant’s death, the Company shall deliver such Shares and/or cash to the executor or administrator of the estate of the Participant, or if no such executor or administrator has been appointed (to the knowledge of the Company), the Company, in its discretion, may deliver such Shares and/or cash to the spouse or to any one or more dependents or relatives of the Participant, or if no spouse, dependent or relative is known to the Company, then to such other person as the Company may designate.

12.5 Notices

All notices or other communications by a Participant to the Company under or in connection with the Plan shall be deemed to have been duly given when received in the form specified by the Company at the location, or by the person, designated by the Company for the receipt thereof.

12.6 Equal Rights and Privileges

Subject to Section 5.7, all Eligible Employees will have equal rights and privileges under the Section 423 Component so that the Section 423 Component of this Plan qualifies as an “employee stock purchase plan” within the meaning of Section 423 of the Code. Subject to Section 5.7, any provision of the Section 423 Component that is inconsistent with Section 423 of the Code will, without further act or amendment by the Company, the Board or the Administrator, be reformed to comply with the equal rights and privileges requirement of Section 423 of the Code. Eligible Employees participating in the Non-Section 423 Component need not have the same rights and privileges as other Eligible Employees participating in the Non-Section 423 Component or as Eligible Employees participating in the Section 423 Component.

12.7 Use of Funds

All payroll deductions received or held by the Company under the Plan may be used by the Company for any corporate purpose, and the Company shall not be obligated to segregate such payroll deductions.

12.8 Reports

Statements of account shall be given to Participants at least annually, which statements shall set forth the amounts of payroll deductions, the Purchase Price, the number of Shares purchased and the remaining cash balance, if any.

12.9 No Employment Rights

Nothing in the Plan shall be construed to give any person (including any Eligible Employee or Participant) the right to remain in the employ of the Company or any Parent or Subsidiary or affect the right of the Company or any Parent or Subsidiary to terminate the employment of any person (including any Eligible Employee or Participant) at any time, with or without cause.

12.10 Notice of Disposition of Shares

Each Participant shall give prompt notice to the Company of any disposition or other transfer of any Shares purchased upon exercise of a right under the Section 423 Component of the Plan if such disposition or transfer is made: (a) within two years from the Enrollment Date of the Offering Period in which the Shares were purchased or (b) within one year after the Purchase Date on which such Shares were purchased. Such notice shall specify the date of such disposition or other transfer and the amount realized, in cash, other property, assumption of indebtedness or other consideration, by the Participant in such disposition or other transfer.

12.11 Governing Law

The Plan and any agreements hereunder shall be administered, interpreted and enforced in accordance with the laws of the State of Israel, disregarding any state’s choice of law principles requiring the application of a jurisdiction’s laws other than the State of Israel. Certain definitions, which refer to the laws of such jurisdiction, shall be construed in accordance with other such laws. The competent courts located in Tel-Aviv-Jaffa, Israel shall have exclusive jurisdiction over any dispute arising out of or in connection with this Plan and any award granted hereunder.

12.12 Electronic Forms

To the extent permitted by Applicable Law and in the discretion of the Administrator, an Eligible Employee may submit any form or notice as set forth herein by means of an electronic form approved by the Administrator. Before the commencement of an Offering Period, the Administrator shall prescribe the time limits within which any such electronic form shall be submitted to the Administrator with respect to such Offering Period in order to be a valid election.

12.13 Data Privacy; Data Transfer

Information related to Participants hereunder, as shall be received from Participants or others, and/or held by, the Company or its Affiliates from time to time, and which information may include sensitive and personal information related to Participants (“Information”), will be used by the Company or its Affiliates (or third parties appointed by any of them) to comply with any applicable legal requirement, or for administration of the Plan as they deems necessary or advisable, or for the respective business purposes of the Company or its Affiliates (including in connection with transactions related to any of them). The Company and its Affiliates shall be entitled to transfer the Information among the Company or its Affiliates, and to third parties for the purposes set forth above, which may include persons located abroad (including, any person administering the Plan or providing services in respect of the Plan or in order to comply with legal requirements, or their respective officers, directors, employees and representatives, and the respective successors and assigns of any of the foregoing), and any person so receiving Information shall be entitled to transfer it for the purposes set forth above. The Company shall use commercially reasonable efforts to ensure that the transfer of such Information shall be limited to the reasonable and necessary scope. By participating, Participants acknowledge and agree that the Information is provided at Participant’s free will and Participant consents to the storage and transfer of the Information as set forth above.

* * * * *

SIMILARWEB LTD.

2021 EMPLOYEE SHARE PURCHASE PLAN - ISRAEI APPENDIX

This Israeli Appendix (the “Appendix”) to the 2021 Employee Share Purchase Plan (as amended from time to time, the “Plan”) of Similarweb Ltd. (the “Company”) shall apply only to persons who are, or are deemed to be, residents of the State of Israel for Israeli tax purposes.

1. GENERAL

1.1. The Administrator, in its discretion, may grant a right to purchase Awards to Eligible Employees and shall determine whether any Award is intended to be a 102 Award. Each exercise of a right to purchase an Award shall be evidenced by a Subscription Agreement, which shall expressly identify the Award type, and be in such form and contain such provisions, as the Administrator shall from time to time deem appropriate.

1.2. The Plan shall apply to any Awards and rights to purchase Awards, in each case granted pursuant to this Appendix, provided, that the provisions of this Appendix shall supersede and govern in the case of any inconsistency or conflict, either explicit or implied, arising between the provisions of this Appendix and the Plan.

1.3. Unless otherwise defined in this Appendix, capitalized terms contained herein shall have the same meanings given to them in the Plan.

2. DEFINITIONS.

2.1. “102 Award” means any Award intended to qualify (as set forth in the Subscription Agreement) and which qualifies under Section 102, provided it is settled only in Shares.

2.2. “102 Capital Gain Track Award” means any Award granted by the Company to an Employee pursuant to Section 102(b)(2) or (3) (as applicable) of the Ordinance under the capital gain track.

2.3. “102 Non-Trustee Award” means any Award granted by the Company to an Employee pursuant to Section 102(c) of the Ordinance without a Trustee.

2.4. “102 Ordinary Income Track Award” means any Award granted by the Company to an Employee pursuant to Section 102(b)(1) of the Ordinance under the ordinary income track.

2.5. “102 Trustee Awards” means, collectively, 102 Capital Gain Track Awards and 102 Ordinary Income Track Awards.

2.6. “Affiliate” means, with respect to any person, any other person that, directly or indirectly through one or more intermediaries, controls, is controlled by, or is under common control with, such person (with the term “control” or “controlled by” within the meaning of Rule 405 of Regulation C under the Securities Act), including, without limitation, any Parent or Subsidiary.

2.7. “Award” shall mean any Share purchased according to the Plan.

2.8. “Election” as defined in Section 3.2 below.

2.9. “Employee” means an “employee” within the meaning of Section 102(a) of the Ordinance (which as of the date of the adoption of this Appendix means (i) an individual employed by an Employer, and (ii) an individual who is serving and is engaged personally (and not through an entity) as an “office holder” by an Employer, excluding any controlling shareholder as to such term is defined in Section 32(9) of the Ordinance.), provided such Employee also satisfies the eligibility requirements under the Plan.

2.10. “Employer” means, for purpose of a 102 Trustee Award, an Affiliate, Subsidiary or Parent which is an “employing company” within the meaning and subject to the conditions of Section 102(a) of the Ordinance.

2.11. “ITA” means the Israel Tax Authority.

2.12. “Ordinance” means the Israeli Income Tax Ordinance (New Version), 1961, including the Rules and any other regulations, rules, orders or procedures promulgated thereunder, as may be amended or replaced from time to time.

2.13. “Required Holding Period” as defined in Section 3.5.1 below.

2.14. “Rules” means the Income Tax Rules (Tax Benefits in Share Issuance to Employees) 5763-2003.

2.15. “Section 102” means Section 102 of the Ordinance.

2.16. “Trust Agreement” means the agreement to be signed between the Company, an Employer and the Trustee for the purposes of Section 102.

2.17. “Trustee” means the trustee appointed by the Company’s Administrator to hold the Awards and approved by the ITA.

2.18. “Subscription Agreement” means a written or electronic agreement between the Company and the Participant or a written or electronic notice delivered by the Company evidencing the exercise of an Award granted pursuant to the Plan, in substantially such form or forms and containing such terms and conditions, as the Administrator shall from time to time approve.

2.19. “Withholding Obligations” as defined in Section 4.5 below.

3. 102 AWARDS

3.1. Tracks. Awards granted pursuant to this Section 3 are intended to be granted as either 102 Capital Gain Track Awards or 102 Ordinary Income Track Awards. 102 Trustee Awards shall be granted subject to the special terms and conditions contained in this Section 3 and the general terms and conditions of the Plan, except for any provisions of the Plan applying to Awards under different tax laws or regulations.

3.2. Election of Track. Subject to Applicable Law, the Company may grant only one type of 102 Trustee Award at any given time to all Employees who are to be granted 102 Trustee Awards pursuant to this Appendix, and shall file an election with the ITA regarding the type of 102 Trustee Award it elects to grant before the date of grant of any 102 Trustee Award (the “Election”). Such Election shall also apply to any other securities received by any Employee as a result of holding the 102 Trustee

Awards. The Company may change the type of 102 Trustee Award that it elects to grant only after the expiration of at least 12 months from the end of the year in which the first grant was made in accordance with the previous Election, or as otherwise provided by Applicable Law. Any Election shall not prevent the Company from granting 102 Non-Trustee Awards.

3.3. Eligibility for Awards. Subject to Applicable Law, 102 Awards may only be granted to Employees. Such 102 Awards may either be granted to a Trustee or granted under Section 102 without a Trustee.

3.4. 102 Award Grant Date.

3.4.1. Each 102 Award will be deemed granted on the date determined by the Administrator, subject to the provisions of the Plan, provided that (i) the Employee has signed all documents required by the Company or pursuant to Applicable Law, and (ii) with respect to any 102 Trustee Award, the Company has provided all applicable documents to the Trustee in accordance with the guidelines published by the ITA.

3.4.2. Unless otherwise permitted by the Ordinance, any grants of 102 Trustee Awards that are made on or after the date of the adoption of the Plan and this Appendix or an amendment to the Plan or this Appendix, as the case may be, that may become effective only at the expiration of thirty (30) days after the filing of the Plan and this Appendix or any amendment thereof (as the case may be) with the ITA in accordance with the Ordinance shall be conditional upon the expiration of such 30-day period, and such condition shall be read and is incorporated by reference into any corporate resolutions approving such grants and into any Subscription Agreement evidencing such grants (whether or not explicitly referring to such condition), and the date of grant shall be at the expiration of such 30-day period, whether or not the date of grant indicated therein corresponds with this Section. In the case of any contradiction, this provision and the date of grant determined pursuant hereto shall supersede and be deemed to amend any date of grant indicated in any corporate resolution or Subscription Agreement.

3.5. 102 Trustee Awards.

3.5.1. Each Share issued pursuant to the 102 Trustee Award shall be allocated or issued to and registered in the name of the Trustee and shall be held in trust or controlled by the Trustee for the benefit of the Participant for the requisite period prescribed by the Ordinance (the “Required Holding Period”). In the event that the requirements under Section 102 to qualify an Award as a 102 Trustee Award are not met, then the Award may be treated as a 102 Non-Trustee Award (as determined by the Company), all in accordance with the provisions of the Ordinance. After the expiration of the Required Holding Period, the Trustee may release such 102 Trustee Awards and any such Shares, provided that (i) the Trustee has received an acknowledgment from the ITA that the Participant has paid any applicable taxes due pursuant to the Ordinance, or (ii) the Trustee and/or the Company and/or the Employer withhold(s) all applicable taxes and compulsory payments due pursuant to the Ordinance arising from the 102 Trustee Awards. The Trustee shall not release any 102 Trustee Awards prior to the payment in full of the Participant’s tax and compulsory payments arising from such 102 Trustee Awards or the withholding referred to in (ii) above.

3.5.2. Each 102 Trustee Award shall be subject to the relevant terms of the Ordinance, the Rules and any determinations, rulings or approvals issued by the ITA, which shall be deemed an integral part of the 102 Trustee Awards and shall prevail over any term contained in the Plan, this Appendix or the Subscription Agreement that is not consistent therewith. Any provision of the Ordinance, the Rules and

any determinations, rulings or approvals by the ITA not expressly specified in the Plan, this Appendix or Subscription Agreement that are necessary to receive or maintain any tax benefit pursuant to Section 102 shall be binding on the Participant. Any Participant granted a 102 Trustee Award shall comply with the Ordinance and the terms and conditions of the Trust Agreement entered into between the Company and the Trustee. The Participant shall execute any and all documents that the Company and/or the Affiliate and/or the Trustee determine from time to time to be necessary in order to comply with the Ordinance and the Rules.

3.5.3. During the Required Holding Period, the Participant shall not release from trust or sell, assign, transfer or give as collateral, the Shares issuable in connection with a 102 Trustee Award and/or any securities issued or distributed with respect thereto, until the expiration of the Required Holding Period. Notwithstanding the above, if any such sale, release or other action occurs during the Required Holding Period it may result in adverse tax consequences to the Participant under Section 102 and the Rules, which shall apply to and shall be borne solely by such Participant. Subject to the foregoing, the Trustee may, pursuant to a written request from the Participant, but subject to the terms of the Plan and this Appendix, release and transfer such Shares to a designated third party, provided that both of the following conditions have been fulfilled prior to such release or transfer: (i) payment has been made to the ITA of all taxes and compulsory payments required to be paid upon the release and transfer of the Shares, and confirmation of such payment has been received by the Trustee and the Company, and (ii) the Trustee has received written confirmation from the Company that all requirements for such release and transfer have been fulfilled according to the terms of the Company’s corporate documents, any agreement governing the Shares, the Plan, this Appendix, the Subscription Agreement and any Applicable Law.

3.5.4. Upon or after receipt of a 102 Trustee Award, if required, the Participant may be required to sign an undertaking to release the Trustee from any liability with respect to any action or decision duly taken and executed in good faith by the Trustee in relation to the Plan, this Appendix, or any 102 Trustee Awards granted to such Participant hereunder.

3.6. 102 Non-Trustee Awards. The foregoing provisions of this Section 3 relating to 102 Trustee Awards shall not apply with respect to 102 Non-Trustee Awards, which shall, however, be subject to the relevant provisions of Section 102 and the applicable Rules. The Administrator may determine that 102 Non-Trustee Awards and/or any securities issued or distributed with respect thereto, shall be allocated or issued to the Trustee, who shall hold such 102 Non-Trustee Award and all accrued rights thereon (if any) in trust for the benefit of the Participant and/or the Company, as the case may be, until the full payment of tax arising from the 102 Non-Trustee Awards and/or any securities issued or distributed with respect thereto. The Company may choose, alternatively, to require the Participant to provide the Company with a guarantee or other security, to the satisfaction of each of the Trustee and the Company, until the full payment of the applicable taxes.

3.7. Written Participant Undertaking. With respect to any 102 Trustee Award, as required by Section 102 and the Rules, by virtue of the receipt of such Award, the Participant is deemed to have provided, undertaken and confirmed the following written undertaking (and such undertaking is deemed incorporated into any documents signed by the Participant in connection with the grant of such Award), and which undertaking shall be deemed to apply and relate to all 102 Trustee Awards granted to the

Participant, whether under the Plan and this Appendix or other plans maintained by the Company, and whether prior to or after the date hereof:

3.7.1. The Participant shall comply with all terms and conditions set forth in Section 102 with regard to the “Capital Gain Track” or the “Ordinary Income Track”, as applicable, and the applicable rules and regulations promulgated thereunder, as amended from time to time;

3.7.2. The Participant is familiar with, and understands the provisions of, Section 102 in general, and the tax arrangement under the “Capital Gain Track” or the “Ordinary Income Track” in particular, and its tax consequences; the Participant agrees that the 102 Trustee Awards will be held by a Trustee appointed pursuant to Section 102 for at least the duration of the “Holding Period” (as such term is defined in Section 102) under the “Capital Gain Track” or the “Ordinary Income Track”, as applicable. The Participant understands that any release of such 102 Trustee Awards or Shares from trust, or any sale of the Shares prior to the termination of the Holding Period, as defined above, will result in taxation at the marginal tax rate, in addition to deductions of appropriate social security, health tax contributions or other compulsory payments; and

3.7.3. The Participant agrees to the Trust Agreement signed between the Company, the Employer and the Trustee appointed pursuant to Section 102.

4. AGREEMENT REGARDING TAXES; DISCLAIMER

4.1. If the Company shall so require, as a condition of the release of Shares by the Trustee, a Participant shall agree that, no later than the date of such occurrence, the Participant will pay to the Company (or the Trustee, as applicable) or make arrangements satisfactory to the Company and the Trustee (if applicable) regarding payment of any applicable taxes and compulsory payments of any kind required by Applicable Law to be withheld or paid.

4.2. TAX LIABILITY. ALL TAX CONSEQUENCES UNDER ANY APPLICABLE LAW WHICH MAY ARISE FROM THE GRANT OF ANY AWARDS, THE SALE OR DISPOSITION OF ANY SHARES GRANTED HEREUNDER, THE ASSUMPTION, SUBSTITUTION, CANCELLATION OR PAYMENT IN LIEU OF AWARDS OR FROM ANY OTHER ACTION IN CONNECTION WITH THE FOREGOING (INCLUDING WITHOUT LIMITATION ANY TAXES AND COMPULSORY PAYMENTS, SUCH AS SOCIAL SECURITY OR HEALTH TAX PAYABLE BY THE PARTICIPANT OR THE COMPANY IN CONNECTION THEREWITH) SHALL BE BORNE AND PAID SOLELY BY THE PARTICIPANT, AND THE PARTICIPANT SHALL INDEMNIFY THE COMPANY, THE AFFILIATE AND THE TRUSTEE, AND SHALL HOLD THEM HARMLESS AGAINST AND FROM ANY LIABILITY FOR ANY SUCH TAX OR PAYMENT OR ANY PENALTY, INTEREST OR INDEXATION THEREON. EACH PARTICIPANT AGREES TO, AND UNDERTAKES TO COMPLY WITH, ANY RULING, SETTLEMENT, CLOSING AGREEMENT OR OTHER SIMILAR AGREEMENT OR ARRANGEMENT WITH ANY TAX AUTHORITY IN CONNECTION WITH THE FOREGOING WHICH IS APPROVED BY THE COMPANY.

4.3. NO TAX ADVICE. THE PARTICIPANT IS ADVISED TO CONSULT WITH A TAX ADVISOR WITH RESPECT TO THE TAX CONSEQUENCES OF RECEIVING, EXERCISING OR DISPOSING OF AWARDS HEREUNDER. THE COMPANY DOES NOT ASSUME ANY RESPONSIBILITY TO ADVISE THE PARTICIPANT ON SUCH MATTERS, WHICH SHALL REMAIN SOLELY THE RESPONSIBILITY OF THE PARTICIPANT.

4.4. TAX TREATMENT. THE COMPANY AND ITS AFFILIATES (INCLUDING THE EMPLOYER) DOES NOT UNDERTAKE OR ASSUME ANY LIABILITY OR RESPONSIBILITY TO THE EFFECT THAT ANY AWARD SHALL QUALIFY WITH ANY PARTICULAR TAX REGIME OR RULES APPLYING TO PARTICULAR TAX TREATMENT, OR BENEFIT FROM ANY PARTICULAR TAX TREATMENT OR TAX ADVANTAGE OF ANY TYPE AND THE COMPANY AND ITS AFFILIATES (INCLUDING THE EMPLOYER) SHALL BEAR NO LIABILITY IN CONNECTION WITH THE MANNER IN WHICH ANY AWARD IS EVENTUALLY TREATED FOR TAX PURPOSES, REGARDLESS OF WHETHER THE AWARD WAS GRANTED OR WAS INTENDED TO QUALIFY UNDER ANY PARTICULAR TAX REGIME OR TREATMENT. THIS PROVISION SHALL SUPERSEDE ANY DESIGNATION OF AWARDS OR TAX QUALIFICATION INDICATED IN ANY CORPORATE RESOLUTION OR SUBSCRIPTION AGREEMENT, WHICH SHALL AT ALL TIMES BE SUBJECT TO THE REQUIREMENTS OF APPLICABLE LAW. THE COMPANY AND ITS AFFILIATES (INCLUDING THE EMPLOYER) DO NOT UNDERTAKE AND SHALL NOT BE REQUIRED TO TAKE ANY ACTION IN ORDER TO QUALIFY ANY AWARD WITH THE REQUIREMENTS OF ANY PARTICULAR TAX TREATMENT AND NO INDICATION IN ANY DOCUMENT TO THE EFFECT THAT ANY AWARD IS INTENDED TO QUALIFY FOR ANY TAX TREATMENT SHALL IMPLY SUCH AN UNDERTAKING. NO ASSURANCE IS MADE BY THE COMPANY, ANY OF ITS AFFILIATES (INCLUDING THE EMPLOYER) THAT ANY PARTICULAR TAX TREATMENT ON THE DATE OF GRANT WILL CONTINUE TO EXIST OR THAT THE AWARD WILL QUALIFY AT THE TIME OF DISPOSITION THEREOF WITH ANY PARTICULAR TAX TREATMENT. THE COMPANY AND THE AFFILIATE (INCLUDING THE EMPLOYER) SHALL NOT HAVE ANY LIABILITY OR OBLIGATION OF ANY NATURE IN THE EVENT THAT AN AWARD DOES NOT QUALIFY FOR ANY PARTICULAR TAX TREATMENT, REGARDLESS OF WHETHER THE COMPANY OR ITS AFFILIATES (INCLUDING THE EMPLOYER) COULD HAVE TAKEN ANY ACTION TO CAUSE SUCH QUALIFICATION TO BE MET AND SUCH QUALIFICATION REMAINS AT ALL TIMES AND UNDER ALL CIRCUMSTANCES AT THE RISK OF THE PARTICIPANT. THE COMPANY AND ITS AFFILIATES (INCLUDING THE EMPLOYER) DO NOT UNDERTAKE OR ASSUME ANY LIABILITY TO CONTEST A DETERMINATION OR INTERPRETATION (WHETHER WRITTEN OR UNWRITTEN) OF ANY TAX AUTHORITY, INCLUDING IN RESPECT OF THE QUALIFICATION UNDER ANY PARTICULAR TAX REGIME OR RULES APPLYING TO PARTICULAR TAX TREATMENT. IF THE AWARDS DO NOT QUALIFY UNDER ANY PARTICULAR TAX TREATMENT IT COULD RESULT IN ADVERSE TAX CONSEQUENCES TO THE PARTICIPANT.

4.5. The Company or the Affiliate (including the Employer) may take such action as it may deem necessary or appropriate, in its discretion, for the purpose of or in connection with withholding of any taxes and compulsory payments which the Trustee, the Company or the Affiliate (including the Employer) is required by any Applicable Law to withhold in connection with any Awards, including, without limitations, any income tax, social benefits, social insurance, health tax, pension, payroll tax, fringe benefits, excise tax, payment on account or other tax-related items related to the Participant’s participation in the Plan and applicable by law to the Participant (collectively, “Withholding Obligations”). Such actions may include (i) requiring Participants to remit to the Company or the Employer in cash an amount sufficient to satisfy such Withholding Obligations and any other taxes and compulsory payments, payable by the Company or the Employer in connection with the Award; (ii) subject to Applicable Law, allowing the Participants to surrender Shares, in an amount that at such time, reflects a value that the Administrator determines to be sufficient to satisfy such Withholding Obligations; or (iii) any combination of the foregoing.

4.6. Each Participant shall notify the Company in writing promptly and in any event within ten (10) days after the date on which such Participant first obtains knowledge of any tax bureau inquiry, audit, assertion, determination, investigation, or question relating in any manner to the Awards granted or received hereunder or Shares issued thereunder and shall continuously inform the Company of any developments, proceedings, discussions and negotiations relating to such matter, and shall allow the Company and its representatives to participate in any proceedings and discussions concerning such matters. Upon request, a Participant shall provide to the Company any information or document relating to any matter described in the preceding sentence, which the Company, in its discretion, requires.

4.7. With respect to 102 Non-Trustee Awards, if the Participant ceases to be employed by the Company or any Parent, Subsidiary or Affiliate (including the Employer), the Participant shall extend to the Company and/or the Employer a security or guarantee for the payment of taxes due at the time of sale of Shares, all in accordance with the provisions of Section 102 and the Rules.

5. RIGHTS AND OBLIGATIONS AS A SHAREHOLDER

5.1. A Participant shall have no rights as a shareholder of the Company with respect to any Shares covered by an Award until the Participant becomes the record holder of the subject Shares. In the case of 102 Awards (if such Awards are being held by a Trustee), the Trustee shall have no rights as a shareholder of the Company with respect to the Shares covered by such Award until the Trustee becomes the record holder for such Shares for the Participant’s benefit, and the Participant shall not be deemed to be a shareholder and shall have no rights as a shareholder of the Company with respect to the Shares covered by the Award until the date of the release of such Shares from the Trustee to the Participant and the transfer of record ownership of such Shares to the Participant (provided however that the Participant shall be entitled to receive from the Trustee any cash dividend or distribution made on account of the Shares held by the Trustee for such Participant’s benefit, subject to any tax withholding and compulsory payment). No adjustment shall be made for dividends (ordinary or extraordinary, whether in cash, securities or other property) or distribution of other rights for which the record date is prior to the date on which the Participant or Trustee (as applicable) becomes the record holder of the Shares covered by an Award, except as provided in the Plan.

5.2. With respect to Shares issued in connection with Awards hereunder, any and all voting rights attached to such Shares shall be subject to the provisions of the Plan, and the Participant shall be entitled to receive dividends distributed with respect to such Shares, subject to the provisions of the Company’s Articles of Association, as amended from time to time, and subject to any Applicable Law.

5.3. The Company may, but shall not be obligated to, register or qualify the sale of Shares under any applicable securities law or any other Applicable Law.

5.4. Shares issued pursuant to an Award shall be subject to the Company’s Articles of Association (as amended from time to time), any limitation, restriction or obligation applicable to shareholders included in any shareholders agreement applicable to all or substantially all of the holders of Shares (regardless of whether or not the Participant is a formal party to such shareholders agreement), any other governing documents of the Company, and all policies, manuals and internal regulations adopted by the Company from time to time, in each case, as may be amended from time to time, including any provisions included therein concerning restrictions or limitations on disposition of Shares (such as, but not limited to, right of first refusal and lock up/market stand-off) or grant of any rights with respect thereto, forced sale and bring along provisions, any provisions concerning restrictions on the use of inside information and other provisions deemed by the Company to be appropriate in order to ensure compliance

with Applicable Laws. Each Participant shall execute such separate agreement(s) as may be requested by the Company relating to matters set forth in this Section 5.4.

6. GOVERNING LAW. This Appendix shall be governed by and construed in accordance with the laws of the State of Israel (excluding its choice-of-law provisions) except that applicable Israeli laws, rules and regulations (as amended) shall apply to any mandatory tax matters arising hereunder.

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