Document:

EX-10.8

 Exhibit 10.8 

HISTOGENICS CORPORATION 

2013 EMPLOYEE STOCK PURCHASE PLAN 

(AS ADOPTED ON NOVEMBER 13, 2013) 

 HISTOGENICS CORPORATION 

2013 EMPLOYEE STOCK PURCHASE PLAN 

SECTION 1. PURPOSE OF THE PLAN. 
 The
Board adopted the Plan effective as of the IPO Date. The purpose of the Plan is to provide Eligible Employees with an opportunity to increase their proprietary interest in the success of the Company by purchasing Stock from the Company on favorable
terms and to pay for such purchases through payroll deductions or other approved contributions. 
 SECTION 2. ADMINISTRATION OF THE PLAN. 

(a) Committee Composition. The Committee shall administer the Plan. The Committee shall consist exclusively of one or more members of
the Board, who shall be appointed by the Board. 
 (b) Committee Responsibilities. The Committee shall interpret the Plan and make
all other policy decisions relating to the operation of the Plan. The Committee may adopt such rules, guidelines and forms as it deems appropriate to implement the Plan. The Committee’s determinations under the Plan shall be final and binding
on all persons. 
 SECTION 3. STOCK OFFERED UNDER THE PLAN. 

(a) Authorized Shares. The number of shares of Stock available for purchase under the Plan shall be 103,665 shares of the Company’s
Stock (subject to adjustment pursuant to Subsection (c) below), plus the additional shares described in Subsection (b) below. Shares of Stock issued pursuant to the Plan may be authorized but unissued shares or treasury shares. 

(b) Annual Increase in Shares. As of the first business day of each fiscal year of the Company during the term of the Plan, commencing
on January 1, 2015, the aggregate number of shares of Stock that may be issued under the Plan shall automatically increase by a number equal to the least of (i) 1% of the total number of shares of Stock actually issued and outstanding on
the last business day of the prior fiscal year (excluding any rights to purchase shares of common shares that may be outstanding, such as options or warrants), (ii) 51,832 shares of Stock (subject to adjustment pursuant to Subsection
(c) below), or (iii) a number of shares of Stock determined by the Board. 
 (c) Anti-Dilution Adjustments. In the event
that any dividend or other distribution (whether in the form of cash, stock or other securities or other property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination,
repurchase, or exchange of Stock or other securities of the Company, or other similar change in the corporate structure of the Company affecting the Stock and effected without receipt or payment of consideration by the Company occurs, then in order
to prevent 

 
dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan, there will be a proportionate adjustment of the number and class of Stock that may be
delivered under the Plan, the Purchase Price per share and the number of shares of Stock covered by each option under the Plan which has not yet been exercised, and the numerical limits of Sections 3(a), 3(b)(ii) and 9(c). 

(d) Reorganizations. Any other provision of the Plan notwithstanding, in the event of a Corporate Reorganization, the Plan may be
continued or assumed by the surviving corporation or its parent corporation. If such acquirer refuses to continue or assume the Plan, then, immediately prior to the effective time of the Corporate Reorganization, any Offering Period then in progress
shall terminate, and, a new Purchase Date for each such Offering Period will be set, immediately prior to the effective time of the Corporate Reorganization. In the event a new Purchase Date is set under this Section 3(d), Participants will be
given notice of the new Purchase Date. The Plan shall in no event be construed to restrict in any way the Company’s right to undertake a dissolution, liquidation, merger, consolidation or other reorganization. 

SECTION 4. ENROLLMENT AND PARTICIPATION. 

(a) Offering Periods and Purchase Periods. 

(i) Base Offering Periods. The Committee may establish Offering Periods of such frequency and duration as it may from
time to time determine as appropriate (the “Base Offering Periods”); provided that a Base Offering Period shall in no event be longer than 27 months (or such other period as may be imposed under applicable tax law). The Base
Offering Periods are intended to qualify under Code Section 423. Unless changed by the Committee, the Plan shall operate such that two Base Offering Periods, each of six months’ duration and each including a single six-month Purchase
Period, will commence on May 1 and November 1 of each year, except that the first Base Offering Period will commence on the IPO Date and shall end on April 30, 2015, with the first Purchase Period commencing on the IPO Date and the
first Purchase Date occurring on or about April 30, 2015. The Committee may determine that the first Base Offering Period applicable to the Eligible Employees of a new Participating Company shall commence on any later date specified by the
Committee. 
 (ii) Additional Offering Periods. At the discretion of the Committee, additional Offering Periods (the
“Additional Offering Periods”) may be conducted under the Plan or, if necessary or advisable, in the sole discretion of the Committee, under a separate sub-plan or sub-plans permitting grants to Eligible Employees of certain
Participating Companies (each, a “Sub-Plan”). Such Additional Offering Periods may, but need not, qualify under Code Section 423, and may be designed to achieve desired tax or other objectives in particular locations
outside the United States of America or to comply with local laws applicable to offerings in such foreign jurisdictions. The Committee shall determine the commencement and duration of each Additional Offering Period, and Additional Offering Periods
may be consecutive or overlapping. The other terms and conditions of each Additional Offering Period shall be those set forth in this Plan document or in the applicable Sub-Plan, with such changes or additional features as

  
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the Committee determines necessary to comply with local law. Each Sub-Plan shall be considered a separate plan from the Plan (the “Statutory Plan”). The total number of
Shares authorized to be issued under the Plan as provided in Section 3 above applies in the aggregate to both the Statutory Plan and any Sub-Plan. Unless otherwise superseded by the terms of such Sub-Plan, the provisions of this Plan document
shall govern the operation of such Sub-Plan. 
 (iii) Separate Offerings. Each Base Offering Period and Additional Offering
Period conducted under the Plan or any Sub-Plan is intended to constitute a separate “offering” for purposes of Code Section 423. 

(iv) Equal Rights and Privileges. To the extent an Offering Period is intended to qualify under Code Section 423, all
participants in such Offering Period shall have the same rights and privileges with respect to their participation in such Offering Period in accordance with Code Section 423 and the regulations thereunder except for differences that may be
mandated by local law and are consistent with the requirements of Code Section 423(b)(5). 
 (b) Enrollment At IPO. Each individual
who, on the IPO Date, qualifies as an Eligible Employee shall automatically become a Participant on such day, and shall be considered to have been granted an option to participate in the first Offering Period under the Plan at the maximum applicable
participation rate. Each Participant who was automatically enrolled on the IPO Date shall file the prescribed enrollment form with the Company. The enrollment form shall be filed at the prescribed location by a date specified by the Company, but in
no event later than 30 days after the IPO Date. If a Participant who was automatically enrolled on the IPO Date fails to file such form in a timely manner, then such Participant shall be deemed to have withdrawn from the Plan under
Section 6(a). A former Participant who is deemed to have withdrawn from the Plan shall not be a Participant until he or she re-enrolls in the Plan under Subsection (c) below. Re-enrollment may be effective only at the commencement of an
Offering Period. 
 (c) Enrollment After IPO Any individual who qualifies as an Eligible Employee on the first day of any Offering
Period other than the first Offering Period may elect to become a Participant on such day by filing the prescribed enrollment form with the Company. The enrollment form shall be filed at the prescribed location at least 10 business days (or such
other period as the Committee or its designee may designate) prior to such day. 
 (d) Duration of Participation. Once enrolled in
the Plan, a Participant shall continue to participate in the Plan until he or she: 
 (i) Reaches the end of the Offering
Period or Purchase Period, as applicable, in which his or her employee contributions were discontinued under Section 5(c) or 9(b); 

(ii) Is deemed to withdraw from the Plan under Subsection (b) above; 

(iii) Withdraws from the Plan under Section 6(a); or 

  
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 (iv) Ceases to be an Eligible Employee. 

A Participant whose employee contributions were discontinued automatically under Section 9(b) shall automatically resume participation at the beginning
of the earliest Offering Period ending in a later calendar year, if he or she then is an Eligible Employee. In all other cases, a former Participant may again become a Participant, if he or she then is an Eligible Employee, by following the
procedure described in Subsection (b) above. 
 SECTION 5. EMPLOYEE CONTRIBUTIONS. 

(a) Commencement of Payroll Deductions. A Participant may purchase shares of Stock under the Plan by means of payroll deductions or
other approved contributions in form and substance satisfactory to the Committee. Payroll deductions or other approved contributions shall commence as soon as reasonably practicable after the Company has received the prescribed enrollment form. In
jurisdictions where payroll deductions are not permitted under local law, Participants may purchase shares of Stock by making contributions in the form that is acceptable and approved by the Committee. 

(b) Amount of Payroll Deductions. An Eligible Employee shall designate on the prescribed enrollment form the portion of his or her
Compensation that he or she elects to have withheld for the purchase of Stock. Such portion shall be a whole percentage of the Eligible Employee’s Compensation, but not less than 1% nor more than 15%. 

(c) Reducing Withholding Rate or Discontinuing Payroll Deductions. If a Participant wishes to reduce his or her rate of payroll
withholding, such Participant may do so by filing a new enrollment form with the Company at the prescribed location at any time. The new withholding rate shall be effective as soon as reasonably practicable after the Company has received such form.
The new withholding rate may be 0% or any whole percentage of the Participant’s Compensation, but not more than his or her old withholding rate. No Participant shall make more than two elections under this Subsection (c) during any
Purchase Period. (In addition, employee contributions may be discontinued automatically pursuant to Section 9(b).) 
 (d) Increasing
Withholding Rate. If a Participant wishes to increase his or her rate of payroll withholding, such Participant may do so by filing a new enrollment form with the Company at the prescribed location at any time. The new withholding rate may be
effective on the first day of the next-upcoming Offering Period in which the Participant participates, provided that the Participant has filed the enrollment form with the Company at the prescribed location at least 10 business days (or such other
period as the Committee or its designee may designate) prior to such day. The new withholding rate may be any whole percentage of the Participant’s Compensation, but not less than 1% nor more than 15%. An increase in a Participant’s rate
of payroll withholding may not take effect during an Offering Period. 
 SECTION 6. WITHDRAWAL FROM THE PLAN. 

(a) Withdrawal. A Participant may elect to withdraw from the Plan (or, if applicable, from an Offering Period) by filing the prescribed
form with the Company at the prescribed location at any time before a Purchase Date. As soon as reasonably practicable 

  
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thereafter, payroll deductions or other approved contributions shall cease and the entire amount credited to the Participant’s Plan Account with respect to such Offering Period shall be
refunded to him or her in cash, without interest (except as otherwise required by the laws of the local jurisdiction). No partial withdrawals from an Offering Period shall be permitted. 

(b) Re-Enrollment After Withdrawal. A former Participant who has withdrawn from the Plan shall not be a Participant until he or she
re-enrolls in the Plan under Section 4(b). Re-enrollment may be effective only at the commencement of an Offering Period. 
 SECTION 7. CHANGE IN
EMPLOYMENT STATUS. 
 (a) Termination of Employment. Termination of employment as an Eligible Employee for any reason, including
death, shall be treated as an automatic withdrawal from the Plan under Section 6(a). (A transfer from one Participating Company to another shall not be treated as a termination of employment provided that each Participating Company is then
participating in the same Offering Period.) 
 (b) Leave of Absence. For purposes of the Plan, employment shall not be deemed to
terminate when the Participant goes on a military leave, a sick leave or another bona fide leave of absence, if the leave was approved by the Company in writing. Employment, however, shall be deemed to terminate on the first day following three
months after the Participant goes on a leave, unless a contract or statute guarantees his or her right to return to work. Employment shall be deemed to terminate in any event when the approved leave ends, unless the Participant immediately returns
to work. 
 (c) Death. In the event of the Participant’s death, the amount credited to his or her Plan Account shall be paid to
a beneficiary designated by him or her for this purpose on the prescribed form or, if none, to the Participant’s estate. Such form shall be valid only if it was filed with the Company at the prescribed location before the Participant’s
death. 
 SECTION 8. PLAN ACCOUNTS AND PURCHASE OF SHARES. 

(a) Plan Accounts. The Company shall maintain a Plan Account on its books in the name of each Participant. Whenever an amount is
deducted from the Participant’s Compensation under the Plan, such amount shall be credited to the Participant’s Plan Account. Amounts credited to Plan Accounts shall not be trust funds and may be commingled with the Company’s general
assets and applied to general corporate purposes. Unless otherwise required by the laws of the local jurisdiction, no interest shall be credited to Plan Accounts. 

(b) Purchase Price. The Purchase Price for each share of Stock purchased on a Purchase Date shall be the lower of: 

(i) 85% of the Fair Market Value of such share on the first day of such Offering Period or, in the case of the first Offering
Period under the Plan, 85% of the price at which one share of Stock is offered to the public in the IPO; or 
 (ii) 85% of
the Fair Market Value of such share on the Purchase Date. 

  
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 (c) Number of Shares Purchased. On each Purchase Date, each Participant shall be deemed to
have elected to purchase the number of shares of Stock calculated in accordance with this Subsection (c), unless the Participant has previously elected to withdraw from the Offering Period in accordance with Section 6(a). The amount then
in the Participant’s Plan Account shall be divided by the Purchase Price, and the number of shares that results shall be purchased from the Company with the funds in the Participant’s Plan Account. The foregoing number of shares of Stock
purchasable by a Participant are subject to the limitations set forth in Section 9. The Committee may determine with respect to all Participants that any fractional share, as calculated under this Subsection (c), shall be (i) rounded
down to the next lower whole share or (ii) credited as a fractional share. 
 (d) Available Shares Insufficient. In the event
that the aggregate number of shares that all Participants elect to purchase with respect to a particular Purchase Period exceeds (i) the number of shares of Stock that were available under Section 3 above for sale under the Plan on the
first day of the applicable Offering Period, or (ii) the number of shares that were available under Section 3 above for sale under the Plan on the applicable Purchase Date, then the number of shares to which each Participant is entitled
shall be determined by multiplying the number of shares available for issuance by a fraction. The numerator of such fraction is the number of shares that such Participant has elected to purchase, and the denominator of such fraction is the number of
shares that all Participants have elected to purchase. The Company may make a pro rata allocation of the shares available on the first day of an applicable Offering Period pursuant to the preceding sentence, notwithstanding any authorization of
additional shares for issuance under the Plan by the Company’s stockholders subsequent to such date. In the event of a pro-rata allocation under this Section (d), the Committee may determine in its discretion to continue all Offering Periods
then in effect or terminate all Offering Periods then in effect pursuant to Section 14. 
 (e) Issuance of Stock. The shares of
Stock purchased by a Participant under the Plan may be registered in the name of such Participant, or jointly in the name of such Participant and his or her spouse as joint tenants with the right of survivorship or as community property (with or
without the right of survivorship). The Company may permit or require that shares be deposited directly with a broker designated by the Company or to a designated agent of the Company, and the Company may utilize electronic or automated methods of
share transfer. The Company may require that shares be retained with such broker or agent for a designated period of time and/or may establish other procedures to permit tracking of disqualifying dispositions of such shares. (The two preceding
sentences shall apply whether or not the Participant is required to pay income tax in the United States.) 
 (f) Tax Withholding. To
the extent required by applicable federal, state, local or foreign law, a Participant shall make arrangements satisfactory to the Company for the satisfaction of any withholding tax obligations that arise in connection with the Plan. The Company
shall not be required to issue any shares of Stock under the Plan until such obligations, if any, are satisfied. 
 (g) Unused Cash
Balances. Subject to the final sentence of Section 8(c), an amount remaining in the Participant’s Plan Account that represents the Purchase Price for any fractional share shall be carried over in the Participant’s Plan Account to
the next Purchase 

  
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Period. Any amount remaining in the Participant’s Plan Account that represents the Purchase Price for whole shares that could not be purchased by reason of Subsections (c) or
(d) above or Section 9(b) shall be refunded to the Participant in cash, without interest (except as otherwise required by the laws of the local jurisdiction). 

(h) Stockholder Approval. Any other provision of the Plan notwithstanding, no shares of Stock shall be purchased under the Plan unless
and until the Company’s stockholders have approved the adoption of the Plan. 
 SECTION 9. PLAN LIMITATIONS. 

(a) Five Percent Limit. Any other provision of the Plan notwithstanding, no Participant shall be granted a right to purchase Stock under
the Plan if such Participant, immediately after his or her election to purchase such Stock, would own stock possessing more than 5% of the total combined voting power or value of all classes of stock of the Company or any parent or Subsidiary of the
Company, determined in accordance with applicable tax law. 
 (b) Dollar Limit. Any other provision of the Plan notwithstanding, no
Participant shall purchase Stock with a Fair Market Value in excess of the following limit: 
 (i) In the case of Stock
purchased during an Offering Period that commenced in the current calendar year, the limit shall be equal to (A) $25,000 minus (B) the Fair Market Value of the Stock that the Participant previously purchased under the Plan in the current
calendar year. 
 (ii) In the case of Stock purchased during an Offering Period that commenced in the immediately preceding
calendar year, the limit shall be equal to (A) $50,000 minus (B) the Fair Market Value of the Stock that the Participant previously purchased under the Plan in the current calendar year and in the immediately preceding calendar year. 

(iii) In the case of Stock purchased during an Offering Period that commenced in the second calendar year before the current
calendar year, the limit shall be equal to (A) $75,000 minus (B) the Fair Market Value of the Stock that the Participant previously purchased under the Plan in the current calendar year and in the immediately preceding two calendar years.

 For all purposes under this Subsection (b), (A) the Fair Market Value of Stock shall be determined as of the beginning of the Offering Period
in which such Stock is purchased; and (B) this Plan shall be aggregated with any other employee stock purchase plans of the Company (or any parent or Subsidiary of the Company) described in Code Section 423. If a Participant is precluded
by this Subsection (b) from purchasing additional Stock under the Plan, then his or her employee contributions shall automatically be discontinued and shall automatically resume at the beginning of the next Offering Period with a scheduled
Purchase Date in the next calendar year, provided that he or she is an Eligible Employee at the beginning of such Offering Period. 

  
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 (c) Purchase Period Share Purchase Limit. Any other provision of the Plan notwithstanding,
no Participant shall purchase more than 323 shares of Stock with respect to any Purchase Period; provided that the Committee may, for future Offering Periods, increase or decrease in its absolute discretion, the maximum number of shares of Stock
that a Participant may purchase during each Purchase Period. 
 SECTION 10. RIGHTS NOT TRANSFERABLE. 

The rights of any Participant under the Plan, or any Participant’s interest in any Stock or moneys to which he or she may be entitled
under the Plan, shall not be transferable by voluntary or involuntary assignment or by operation of law, or in any other manner other than by beneficiary designation or the laws of descent and distribution. If a Participant in any manner attempts to
transfer, assign or otherwise encumber his or her rights or interest under the Plan, other than by beneficiary designation or the laws of descent and distribution, then such act shall be treated as an election by the Participant to withdraw from the
Plan under Section 6(a). 
 SECTION 11. NO RIGHTS AS AN EMPLOYEE. 

Nothing in the Plan or in any right granted under the Plan shall confer upon the Participant any right to continue in the employ of a
Participating Company for any period of specific duration or interfere with or otherwise restrict in any way the rights of the Participating Companies or of the Participant, which rights are hereby expressly reserved by each, to terminate his or her
employment at any time and for any reason, with or without cause. 
 SECTION 12. NO RIGHTS AS A STOCKHOLDER. 

A Participant shall have no rights as a stockholder with respect to any shares of Stock that he or she may have a right to purchase under the
Plan until such shares have been purchased on the applicable Purchase Date. 
 SECTION 13. SECURITIES LAW REQUIREMENTS. 

Shares of Stock shall not be issued, and the Company shall have no liability for failure to issue shares of Stock, under the Plan unless the
issuance and delivery of such shares comply with (or are exempt from) all applicable requirements of law, including (without limitation) the Securities Act of 1933, as amended, the rules and regulations promulgated thereunder, state securities laws
and regulations, and the regulations of any stock exchange or other securities market on which the Company’s securities may then be traded. 

SECTION 14. AMENDMENT OR DISCONTINUANCE. 

(a) General Rule. The Committee, in its sole discretion, may amend, suspend, or terminate the Plan, or any part thereof, at any time and
for any reason. If the Plan is terminated, the Committee, in its discretion, may elect to terminate all outstanding Offering Periods either immediately or upon completion of the purchase of shares of Stock on the next Purchase Date, or may elect to
permit Offering Periods to expire in accordance with their terms 

  
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(and subject to any adjustment pursuant to Section 3(c) or (d)). If the Offering Periods are terminated prior to expiration, all amounts then credited to Participants’ accounts which
have not been used to purchase shares of Stock will be returned to the Participants (without interest thereon, except as otherwise required by the laws of the local jurisdiction) as soon as administratively practicable. 

(b) Committee’s Discretion. Without stockholder consent and without limiting Section 14(a), the Committee will be entitled to
change the Offering Periods, limit the frequency and/or number of changes in the amount withheld 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 properly completed withholding elections, establish reasonable waiting and adjustment periods and/or accounting and
crediting procedures to ensure that amounts applied toward the purchase of Stock for each Participant properly correspond with amounts withheld from the Participant’s Compensation, and establish such other limitations or procedures as it
determines in its sole discretion advisable which are consistent with the Plan. 
 (c) Accounting Consideration. In the event the
Committee determines that the ongoing operation of the Plan may result in unfavorable financial accounting consequences, the Committee may, in its discretion and, to the extent necessary or desirable, modify, amend or terminate the Plan to reduce or
eliminate such accounting consequence including, but not limited to: 
 (i) Amending the Plan to conform with the safe harbor
definition under Financial Accounting Standards Board Accounting Standards Codification Topic 718, including with respect to an Offering Period underway at the time; 

(ii) Altering the Purchase Price for any Offering Period including an Offering Period underway at the time of the change in
Purchase Price; 
 (iii) Shortening any Offering Period by setting a new Purchase Date, including an Offering Period underway
at the time of the Committee’s action; 
 (iv) Reducing the maximum percentage of Compensation a Participant may elect
to set aside as payroll deductions; and 
 (v) Reducing the maximum number of shares of Stock a Participant may purchase
during any Purchase Period. 
 Such modifications or amendments will not require stockholder approval or the consent of any Plan Participants. 

(d) Stockholder Approval. Except as provided in Section 3, any increase in the aggregate number of shares of Stock that may be
issued under the Plan shall be subject to the approval of the Company’s stockholders. In addition, any other amendment of the Plan shall be subject to the approval of the Company’s stockholders to the extent required under
Section 14(e) or by any applicable law or regulation. 

  
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 (e) Plan Termination. The Plan shall terminate automatically 20 years after its adoption
by the Board, unless (i) the Plan is extended by the Board and (ii) the extension is approved within 12 months by a vote of the stockholders of the Company. 

SECTION 15. DEFINITIONS. 

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

(b) “Code” means the Internal Revenue Code of 1986, as amended. 

(c) “Committee” means a committee of the Board, as described in Section 2. 

(d) “Company” means Histogenics Corporation, a Delaware corporation. 

(e) “Compensation” means (i) the total compensation paid in cash to a Participant by a Participating
Company, including salaries, wages, bonuses, incentive compensation, commissions, overtime pay and shift premiums, plus (ii) any pre-tax contributions made by the Participant under Code Sections 401(k) or 125. “Compensation”
shall exclude all non-cash items, moving or relocation allowances, cost-of-living equalization payments, car allowances, tuition reimbursements, imputed income attributable to cars or life insurance, severance pay, fringe benefits, contributions or
benefits received under employee benefit plans, income attributable to equity compensation awards of the Company, and similar items. The Committee shall determine whether a particular item is included in Compensation. 

(f) “Corporate Reorganization” means: 

(i) The consummation of a merger or consolidation of the Company with or into another entity or any other corporate
reorganization; or 
 (ii) The sale, transfer or other disposition of all or substantially all of the Company’s assets
or the complete liquidation or dissolution of the Company. 
 (g) “Eligible Employee” means a common law
employee of a Participating Company who is customarily employed for more than five months per calendar year and at least 20 hours per week. The foregoing notwithstanding, an individual shall not be considered an Eligible Employee if his or her
participation in the Plan is prohibited by the law of any country that has jurisdiction over him or her. In addition, the Committee may determine prior to the commencement of an Offering Period not to exclude part-time employees or exclude employees
whose customary employment is for fewer hours per week or fewer months in a calendar year; provided that such terms are applied in an identical manner to all employees of every Participating Company in such Offering Period. 

(h) “Exchange Act” means the Securities Exchange Act of 1934, as amended. 

(i) “Fair Market Value” means the price at which Stock was last sold in the principal U.S. market for the
Stock on the applicable date or, if the applicable date was not a trading day, on the last trading day prior to the applicable date. If Stock is no longer traded on 

  
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a public U.S. securities market, the Fair Market Value shall be determined by the Committee in good faith on such basis as it deems appropriate. The Committee’s determination shall be
conclusive and binding on all persons. 
 (j) “IPO” means the Company’s initial offering of Stock to
the public. 
 (k) “IPO Date” means the effective date of the registration statement filed by the Company
with the Securities and Exchange Commission for its initial offering of Stock to the public. 
 (l) “Offering
Period” means any period, including as the context requires Base Offering Periods and Additional Offering Periods, with respect to which the right to purchase Stock may be granted under the Plan, as determined pursuant to Section 4(a). 

(m) “Participant” means an Eligible Employee who participates in the Plan or any Sub-Plan, as provided in
Section 4. 
 (n) “Participating Company” means (i) the Company and (ii) each present or
future Subsidiary designated by the Committee as a Participating Company. 
 (o) “Plan” means this
Histogenics Corporation 2013 Employee Stock Purchase Plan, as it may be amended from time to time. 
 (p) “Plan
Account” means the account established for each Participant pursuant to Section 8(a). 
 (q) “Purchase
Date” means the last trading day of a Purchase Period. 
 (r) “Purchase Period” means a period
within an Offering Period (which for an Offering Period with only a single Purchase Period would be coterminous with the Offering Period) during which contributions may be made toward the purchase of Stock under the Plan, as determined pursuant to
Section 4(a). 
 (s) “Purchase Price” means the price at which Participants may purchase Stock under
the Plan, as determined pursuant to Section 8(b). 
 (t) “Stock” means the Common Stock of the
Company. 
 (u) “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 50% or more of the total combined voting power of all classes of stock in one of the other corporations
in such chain. 

  
 11EX-10.21

 Exhibit 10.21 

FORM OF OPTION AGREEMENT (2013)

STOCK OPTION GRANT NOTICE AND STOCK OPTION AGREEMENT 

TransDigm Group Incorporated, a Delaware corporation (the “Company”), pursuant to its 2006 Stock Incentive Plan (the
“Plan”), hereby grants to the holder listed below (“Participant”), an option to purchase the number of shares of the Company’s common stock, par value $0.01 (“Stock”), set
forth below (the “Option”). This Option is subject to all of the terms and conditions set forth herein and in the Stock Option Agreement attached hereto as Exhibit A (the “Stock Option
Agreement”) and the Plan, which are incorporated herein by reference. Unless otherwise defined herein, the terms defined in the Plan shall have the same defined meanings in this Grant Notice and the Stock Option Agreement. 

 

			
	 Participant:
	 	                                     
                                         
                                         
                                         
              
		
	 Grant Date:
	 	                                     
                                         
                                         
                                         
              
		
	 Exercise Price per

Share:
	 	$                                     
                                         
                                         
                                         
            
		
	 Total Number of

Shares Subject to

the Option:
	 	                                     
                                         
                                         
                                         
    Shares
		
	 Expiration Date:
	 	                                     
                                         
                                         
                                         
            
	 Type of Option:
	 	     ̈  Incentive Stock Option    x  Non-Qualified Stock Option
		
	 Vesting Schedule:
	 	 Subject to the terms of the Stock Option Agreement (including without limitation all exhibits thereto), the Option shall be eligible to become
exercisable upon the achievement of performance objectives over the period set forth in Exhibit B hereto (provided that the Participant is an Eligible Person (as defined in the Plan) at all times during the period beginning on the Grant Date
and ending on the applicable vesting date):

 By his or her signature, the Participant agrees to be bound by the terms and conditions of the Plan, the Stock
Option Agreement and this Grant Notice. The Participant has reviewed the Stock Option Agreement, the Plan and this Grant Notice in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Grant Notice and fully
understands all provisions of this Grant Notice, the Stock Option Agreement and the Plan. The Participant agrees that as a condition to receiving the Option, the Participant shall comply with the Stock Retention Guidelines set forth on Exhibit
C. The Participant hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Committee upon any questions arising under the Plan or relating to the Option. 

 

									
	TRANSDIGM GROUP INCORPORATED	  		 	PARTICIPANT
					
	By:	 	  
	  		 	By:	 	  

	 Print
     Name:
	 	  
	  		 	 Print
 Name:
	 	  

	Title:	 	  
	  		 		 	
	Address:	 	  
	  		 	Address:	 	  

  
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 EXHIBIT A 

TO STOCK OPTION GRANT NOTICE 

STOCK OPTION AGREEMENT 

Pursuant to the Stock Option Grant Notice (the “Grant Notice”) to which this Stock Option Agreement (this
“Agreement”) is attached, TransDigm Group Incorporated, a Delaware corporation (the “Company”), has granted to the Participant an option (the “Option”)1 under the Company’s 2006 Stock Incentive Plan (the “Plan”) to purchase the number of shares of Stock indicated in the Grant Notice. 

ARTICLE I. 
 GENERAL

 1.1 Defined Terms. Wherever the following terms are used in this Agreement they shall have the meanings specified below,
unless the context clearly indicates otherwise. Capitalized terms not specifically defined herein shall have the meanings specified in the Plan and the Grant Notice. 

(a) “Administrator” shall mean the Board or the Compensation Committee or other committee of the Board
responsible for conducting the general administration of the Plan in accordance with Section 3 of the Plan; provided that if the Participant is an Independent Director, “Administrator” shall mean the Board. 

(b) “Consultant” shall mean an individual who renders services to the Company as a consultant and has
been so designated by the Committee. 
 (c) “Credit Agreement” shall mean that certain credit
agreement dated as of June 23, 2006 among TransDigm, Inc., TransDigm Group Incorporated and the lenders party thereto, as in effect as of the Grant Date and without reference to any amendment to the Credit Agreement made following the Grant
Date. 
 (d) “Diluted Shares” as of a given date shall mean the total diluted
weighted-average of common shares of the Company outstanding as of such date. 
 (e) “EBITDA” for a
given fiscal year of the Company shall mean Consolidated EBITDA (as defined in the Credit Agreement) of the Company for such fiscal year on a pro forma basis adjusted for acquisitions or divestitures. 

(f) “Independent Director” shall mean a non-employee director of the Company. 

(g) “Net Debt” shall mean, as of the last day of a given fiscal year of the Company, the excess of
(a) Consolidated Total Indebtedness (as defined in the Credit Agreement) of the Company over (b) the amount of cash and cash equivalents set forth on the Company’s balance sheet. 

(h) “Termination of Consultancy” shall mean the time when the engagement of the Participant as a
Consultant to the Company or a Subsidiary is terminated for any reason, with or without cause, including, but not by way of limitation, by resignation, discharge, death or retirement, but excluding: (i) terminations where there is a
simultaneous employment or continuing employment of the Participant by the Company or any Subsidiary, and (ii) terminations where there is a simultaneous re-establishment of a consulting relationship or continuing consulting relationship
between the Participant and the Company or any Subsidiary. The Administrator, in its absolute discretion, shall determine the effect of all matters and questions relating to Termination of Consultancy, including, but not by way of limitation, the
question of whether a particular leave of absence constitutes a Termination of Consultancy. Notwithstanding any other provision of the Plan, the Company or any Subsidiary has an absolute and unrestricted right to terminate a Consultant’s
service at any time for any reason whatsoever, with or without cause, except to the extent expressly provided otherwise in writing. 
  

	1 	For the avoidance of doubt, the term “Option” as used herein only describes options granted pursuant to the Stock Option Grant Notice to which this Agreement is an Exhibit. 

  
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 (i) “Termination of Directorship” shall mean the
time when the Participant, if he or she is or becomes an Independent Director, ceases to be a Director for any reason, including, but not by way of limitation, a termination by resignation, failure to be elected, death or retirement. The Board, in
its sole and absolute discretion, shall determine the effect of all matters and questions relating to Termination of Directorship with respect to Independent Directors. 

(j) “Termination of Employment” shall mean the time when the employee-employer relationship
between the Participant and the Company or any Subsidiary is terminated for any reason, with or without Cause, including, but not by way of limitation, a termination by resignation, discharge, death, disability or retirement; but excluding:
(i) terminations where there is a simultaneous reemployment or continuing employment of the Participant by the Company or any Subsidiary, and (ii) terminations where there is a simultaneous establishment of a consulting relationship or
continuing consulting relationship between the Participant and the Company or any Subsidiary. The Administrator, in its absolute discretion, shall determine the effect of all matters and questions relating to Termination of Employment, including,
but not by way of limitation, the question of whether a particular leave of absence constitutes a Termination of Employment; provided, however, that, if this Option is an Incentive Stock Option, unless otherwise determined by the Administrator in
its discretion, a leave of absence, change in status from an employee to an independent contractor or other change in the employee-employer relationship shall constitute a Termination of Employment if, and to the extent that, such leave of absence,
change in status or other change interrupts employment for the purposes of Section 422(a)(2) of the Code and the then applicable regulations and revenue rulings under said Section. 

(k) “Termination of Services” shall mean the time when (i) every relationship between the
Participant and the Company has been terminated by a Termination of Consultancy, Termination of Directorship and/or Termination of Employment, as applicable, and (ii) the Participant is no longer an Eligible Person under the Plan. 

1.2 Incorporation of Terms of Plan. The Option is subject to the terms and conditions of the Plan which are incorporated herein by
reference. In the event of any inconsistency between the Plan and this Agreement, the terms of the Plan shall control. 

ARTICLE II. 
 GRANT OF OPTION 
 2.1 Grant of Option. In consideration of the
Participant’s past and/or continued employment with or service to the Company or a Subsidiary and for other good and valuable consideration, effective as of the Grant Date set forth in the Grant Notice (the “Grant
Date”), the Company irrevocably grants to the Participant the Option to purchase any part or all of an aggregate of the number of shares of Stock set forth in the Grant Notice, upon the terms and conditions set forth in the Plan and
this Agreement. Unless designated as a Non-Qualified Stock Option in the Grant Notice, the Option shall be an Incentive Stock Option to the maximum extent permitted by law. 
 2.2 Exercise Price. The exercise price of the shares of Stock subject to the Option shall be as set forth in the Grant Notice, without commission or other charge; provided, however,
that the price per share of the shares of Stock subject to the Option shall not be less than 100% of the Fair Market Value of a share of Stock on the Grant Date. Notwithstanding the foregoing, if this Option is designated as an Incentive Stock
Option and the Participant owns (within the meaning of Section 424(d) of the Code) more than 10% of the total combined voting power of all classes of stock of the Company or any “subsidiary corporation” of the Company or any
“parent corporation” of the Company (each within the meaning of Section 424 of the Code), the price per share of the shares of Stock subject to the Option shall not be less than 110% of the Fair Market Value of a share of Stock on the
Grant Date. 
 2.3 Consideration to the Company. In consideration of the grant of the Option by the Company, the
Participant agrees to render faithful and efficient services to the Company or any Subsidiary. Nothing in the Plan or this Agreement shall confer upon the Participant any right to continue in the employ or service of the Company or any Subsidiary or
shall interfere with or restrict in any way the rights of the Company and its Subsidiaries, which rights are hereby expressly reserved, to discharge or terminate the services of the Participant at any time for any reason whatsoever, with or without
Cause, except to the extent expressly provided otherwise in a written agreement between the Company or a Subsidiary and the Participant. 

  
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 ARTICLE III. 

PERIOD OF EXERCISABILITY 

3.1 Commencement of Exercisability. 

(a) Subject to Sections 3.1(b), 3.1(c) and 3.3, the Option shall become vested and exercisable in such amounts and at such
times as are set forth in the Grant Notice. 
 (b) No portion of the Option which has not become vested and exercisable at
the date of the Participant’s Termination of Services shall thereafter become vested and exercisable, except as may be otherwise provided by the Administrator or as set forth in a written agreement between the Company and the Participant.
[ALTERNATE PROVISION FOR EXECUTIVE OFFICERS: No portion of the Option which has not become vested and exercisable at the date of the Participant’s Termination of Services shall thereafter become vested and exercisable, except as follows
or as may be otherwise provided by the Administrator or as set forth in a written agreement between the Company and the Participant: 

If the Participant incurs a termination of employment under any of the circumstances described in Section 5(a)(i) (death)
of that certain Employment Agreement between the Participant and the Company effective                      (the “Employment Agreement”),
Section 5(a)(ii) (Disability) of the Employment Agreement, Section 5(a)(iv) (Resignation for Good Reason of the Employment Agreement or Section 5(a)(v) (Termination without Cause) of the Employment Agreement or if the Participant
retires from employment after at least 15 years of service after age 60 or after at least ten years of service after age 65, in each such case vesting will continue after termination of employment as provided below: 

 

					
	 Termination Date
	  	Percent of
Remaining
Options That May
Continue to Vest	 
	 Prior to October 1, 2013
	  	 	0	% 
	 On or after October 1, 2013 but prior to October 1, 2014
	  	 	20	% 
	 On or after October 1, 2014 but prior to October 1, 2015
	  	 	40	% 
	 On or after October 1, 2015 but prior to October 1, 2016
	  	 	60	% 
	 On or after October 1, 2016 but prior to October 1, 2017
	  	 	80	% 
	 On or after October 1, 2017
	  	 	100	% 

 The percentage of remaining Options permitted to vest will be spread ratably over the vesting
schedule.] 
 (c) Notwithstanding Section 3.1(a) of this Agreement and Section 8 of the Plan (but subject to
Section 3.1(b) of this Agreement), in the event of a Change in Control Options shall become fully vested and exercisable. Notwithstanding the foregoing, the Administrator may, in good faith and in such manner as it may deem equitable, in its
sole discretion, adjust the foregoing Fair Market Value requirements in the event of a dividend or other distribution (whether in the form of cash, Stock, other securities or property), recapitalization, reclassification, stock split, reverse stock
split, reorganization, merger, consolidation, split-up, spin-off, combination, repurchase or exchange of Stock or other securities of the Company, issuance of warrants or other rights to purchase Stock or other securities of the Company, or any
unusual or nonrecurring transactions or events affecting the Company or the financial statements of the Company if the adjustment is determined by the Administrator to be appropriate in order to prevent dilution or enlargement of the benefits or
potential benefits intended to be made available under the Plan or with respect to the Option. For purposes of this Section 3.1, shall take into account the consideration received by the stockholders in connection with a Change in Control or in
connection with any other sale of common stock or other equity interests in the Company or any Subsidiary, after taking into account all post-closing adjustments relating to a Change in Control, and assuming the exercise of all vested options and
warrants outstanding as of the effective date of 

  
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such Change in Control (after giving effect to any dilution of securities or instruments arising in connection with such Change in Control); provided however, that if the stockholders
retain any portion of the common stock following such Change in Control or other sale, the Fair Market Value of such portion of the retained common stock immediately following such Change in Control or other sale shall be deemed “consideration
received” for purposes of calculating the proceeds and provided further that the Fair Market Value of any non-cash consideration (including stock) received in connection with a Change in Control shall be determined as of the date of such
Change in Control. 
 Notwithstanding Section 3.1(a) of this Agreement and Section 8 of the Plan (but subject to
Section 3.1(b) of this Agreement) and notwithstanding Exhibit B to this Agreement, with respect to any portion of the Options that have not otherwise vested prior to the applicable date set forth below: (a) in the event that prior to
September 30, 2016, the closing price of the Company’s common stock on the New York Stock Exchange exceeded two times the Exercise Price of the Options on any 60 trading days during any consecutive 12-month period commencing
October 1, 2014, then all of the unvested Options will vest 50% on September 30, 2016 and 50% on September 30, 2017, and (b) in the event that the condition in clause (a) is not met but, prior to September 30, 2017, the
closing price of the Company’s common stock on the New York Stock Exchange exceeds two times the Exercise Price of the Options on any 60 trading days during any consecutive 12-month period commencing October 1, 2015, the remaining portion
of the unvested Options will vest on September 30, 2017. 
 3.2 Duration of Exercisability. The installments
provided for in the vesting schedule set forth in the Grant Notice are cumulative. Each such installment which becomes vested and exercisable pursuant to the vesting schedule set forth in the Grant Notice shall remain vested and exercisable until it
becomes unexercisable under Section 3.3. 
 3.3 Expiration of Option. The Option may not be exercised to any extent
by anyone after the first to occur of the following events: 
 (a) The expiration of ten years from the Grant
Date; or 
 (b) If this Option is designated as an Incentive Stock Option and the Participant owned (within the
meaning of Section 424(d) of the Code), at the time the Option was granted, more than 10% of the total combined voting power of all classes of stock of the Company or any “subsidiary corporation” of the Company or any “parent
corporation” of the Company (each within the meaning of Section 424 of the Code), the expiration of five years from the Grant Date; or 
 (c) The opening of business on the day of the Participant’s Termination of Employment by reason of a termination by the Company for Cause; [ALTERNATIVE PROVISION FOR EXECUTIVE OFFICERS: The
opening of business on the day of the Participant’s Termination of Services by reason of the Participant’s Termination of Employment by reason of a termination by the Company for Cause (as defined in the Participant’s employment
agreement, if applicable), unless the Committee, in its discretion, determines that a longer period is appropriate;] or 
 (d) The expiration of six months from the date of the Participant’s Termination of Services, unless such termination occurs by reason of the Participant’s death, Disability or retirement
(pursuant to Section 3.3(e)) or is a termination by the Company for Cause (as defined in Participant’s employment agreement), provided, however, that any portion of this Option that is an Incentive Stock Option shall cease to be an
Incentive Stock Option on the expiration of three months from the Participant’s Termination of Services (and shall thereafter be a Non-Qualified Stock Option), provided, further, that to the extent that the Participant is prohibited from
selling shares of Stock pursuant to the Company’s insider trading policy at all times during such six-month period, with the exception of an open trading window of less than seven days, the Option shall expire on the later of (i) the
seventh day following the opening of the first open trading window thereafter or (ii) the first anniversary of the Participant’s Termination of Services; [ALTERNATIVE PROVISION FOR EXECUTIVE OFFICERS: The expiration of six months
from the date of the Participant’s Termination of 

  
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Services, unless such termination occurs by reason of (i) the Participant’s death, (ii) the Participant’s Disability, (iii) the Participant’s retirement (pursuant to
Section 3.3(e)), (iv) the Participant’s termination for Cause (as defined in the Participant’s employment, agreement, if applicable) or(v) if the Participant has an employment agreement that defines a termination for
“cause” and/or “good Reason,” a termination by the Company without Cause (as defined in the Participant’s employment agreement) or a termination by the Participant for Good Reason (as defined in the Participant’s
employment agreement), provided, however, that any portion of this Option that is an Incentive Stock Option shall cease to be an Incentive Stock Option on the expiration of three months from the Participant’s Termination of Services (and
shall thereafter be a Non-Qualified Stock Option), provided, further, that to the extent that the Participant is prohibited from selling shares of Stock pursuant to the Company’s insider trading policy at all times during such six-month
period, wth the exception of an open trading window of less than seven days, the Option shall expire on the seventh day following the opening of the first open trading window thereafter;] or 

(e) The expiration of one year from the date of the Participant’s Termination of Services by reason of (i) the
Participant’s death or Disability; or (ii) the retirement, after a minimum of ten years of service, of a Participant who is at least 55 years old, provided, however, that to the extent that the Participant is prohibited from selling
shares of Stock pursuant to the Company’s insider trading policy at all times during such one-year period, with the exception of an open trading window of less than seven days, the Option shall expire on the seventh day following the opening of
the first open trading window thereafter. [ALTERNATIVE PROVISION FOR EXECUTIVE OFFICERS: The expiration of one year from the date of the Participant’s Termination of Services by reason of the retirement, after a minimum of ten years of
service, of a Participant who is at least 55 years old, provided, however, that to the extent that the Participant is prohibited from selling shares of Stock pursuant to the Company’s insider trading policy at all times during such
one-year period, with the exception of an open trading window of less than seven days, the Option shall expire on the seventh day following the opening of the first open trading window thereafter; or] 

[ALTERNATE PROVISION FOR EXECUTIVE OFFICERS: (f) The expiration date set forth in clause (a), (i) if the
Participant has an employment agreement that defines a termination for “Cause” and/or “Good Reason,” and upon a Participant’s Termination of Services by the Company without Cause (as defined in Participant’s employment
agreement or a Termination of Services by the Participant for Good Reason (as defined in Participant’s employment agreement) or (ii) upon the Participant’s death or Disability or (iii) upon the Participant’s retirement from
employment after at least 15 years of service after age 60 or after at least ten years of service after age 65. 

Notwithstanding the foregoing, if any Option vests after the Participant’s Termination of Services for reasons set forth
herein pursuant to Section 3.1 and the Participant has a limit of six months or one year following such Termination of Services to exercise the Option pursuant to paragraph (d) or (3), the Participant shall have six months after the Option
vests to exercise such Option.] 
 3.4 Special Tax Consequences. The Participant acknowledges that, to the extent that the
aggregate Fair Market Value (determined as of the time the Option is granted) of all shares of Stock with respect to which Incentive Stock Options, including the Option, are exercisable for the first time by the Participant in any calendar year
exceeds $100,000, the Option and such other options shall be Non-Qualified Stock Options to the extent necessary to comply with the limitations imposed by Section 422(d) of the Code. The Participant further acknowledges that the rule set forth
in the preceding sentence shall be applied by taking the Option and other “incentive stock options” into account in the order in which they were granted, as determined under Section 422(d) of the Code and the Treasury Regulations
thereunder. The Participant acknowledges that an Incentive Stock Option exercised more than three months after the Participant’s Termination of Employment, other than by reason of death or Disability, will be taxed as a Non-Qualified Stock
Option. 

  
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 ARTICLE IV. 

EXERCISE OF OPTION 
 4.1
Person Eligible to Exercise. Except as provided in Sections 5.2(b), during the lifetime of the Participant, only the Participant may exercise the Option or any portion thereof. After the death of the Participant, any exercisable portion of
the Option may, prior to the time when the Option becomes unexercisable under Section 3.3, be exercised by the Participant’s personal representative or by any person empowered to do so under the deceased Participant’s will or under
the then applicable laws of descent and distribution. 
 4.2 Partial Exercise. Any exercisable portion of the Option or the entire
Option, if then wholly exercisable, may be exercised in whole or in part at any time prior to the time when the Option or portion thereof becomes unexercisable under Section 3.3. 

4.3 Manner of Exercise. The Option, or any exercisable portion thereof, may be exercised solely by delivery to the Secretary of the
Company (or any third party administrator or other person or entity designated by the Company) of all of the following prior to the time when the Option or such portion thereof becomes unexercisable under Section 3.3: 

(a) An Exercise Notice in a form specified by the Administrator, stating that the Option or portion thereof is thereby
exercised, such notice complying with all applicable rules established by the Administrator; 
 (b) The receipt by the
Company of full payment for the shares of Stock with respect to which the Option or portion thereof is exercised, including payment of any applicable withholding tax, which may be in one or more of the forms of consideration permitted under
Section 4.4; 
 (c) Any other written representations as may be required in the Administrator’s reasonable
discretion to evidence compliance with the Securities Act or any other applicable law, rule, or regulation; and 
 (d) In the
event the Option or portion thereof shall be exercised pursuant to Section 4.1 by any person or persons other than the Participant, appropriate proof of the right of such person or persons to exercise the Option. 

Notwithstanding any of the foregoing, the Company shall have the right to specify all conditions of the manner of exercise, which conditions may vary by
country and which may be subject to change from time to time. 
 4.4 Method of Payment. Payment of the exercise price, and any
applicable withholding tax, shall be by any of the following, or a combination thereof, at the election of the Participant: 

(a) Cash; 

(b) Check; 

(c) Broker-Assisted Cash-less Exercise. With the consent of the Administrator, delivery of a notice that the Participant
has placed a market sell order with a broker with respect to shares of Stock then issuable upon exercise of the Option, and that the broker has been directed to pay a sufficient portion of the net proceeds of the sale to the Company in satisfaction
of the aggregate exercise price; provided, that payment of such proceeds is then made to the Company upon settlement of such sale; 

(d) Share Surrender. With the consent of the Administrator, surrender of other shares of Stock which (i) in the
case of shares of Stock acquired from the Company, have been owned by the Participant for more than six (6) months on the date of surrender (or such other minimum length of time as the Administrator determines from time to time to be necessary
to avoid adverse accounting consequences or violation of any applicable law, rule or regulation), and (ii) have a Fair Market Value on the date of surrender equal to the aggregate exercise price of the shares of Stock with respect to which the
Option or portion thereof is being exercised; or 
 (e) Net Exercise. With the consent of the Administrator,
surrendered shares of Stock issuable upon the exercise of the Option having a Fair Market Value on the date of exercise equal to the aggregate exercise price of the shares of Stock with respect to which the Option or portion thereof is being
exercised. 

  
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 4.5 Conditions to Issuance of Stock Certificates. The shares of Stock deliverable upon the
exercise of the Option, or any portion thereof, may be either previously authorized but unissued shares of Stock or issued shares of Stock which have then been reacquired by the Company. Such shares of Stock shall be fully paid and nonassessable.
The Company shall not be required to issue or deliver any shares of Stock purchased upon the exercise of the Option or portion thereof prior to fulfillment of all of the following conditions: 

(a) The admission of such shares of Stock to listing on all stock exchanges on which such Stock is then listed; 

(b) The completion of any registration or other qualification of such shares of Stock under any state or federal law or under
rulings or regulations of the Securities and Exchange Commission or of any other governmental regulatory body, which 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 which the Administrator
shall, in its absolute discretion, determine to be necessary or advisable; 
 (d) The receipt by the Company of full payment
for such shares of Stock, including payment of any applicable withholding tax, which may be in one or more of the forms of consideration permitted under Section 4.4; and 

(e) The lapse of such reasonable period of time following the exercise of the Option as the Administrator may from time to time
establish for reasons of administrative convenience. 
 4.6 Rights as Stockholder. The holder of the Option shall not be, nor have
any of the rights or privileges of, a stockholder of the Company in respect of any shares of Stock purchasable upon the exercise of any part of the Option unless and until such shares of Stock shall have been issued by the Company to such holder (as
evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company). No adjustment will be made for a dividend or other right for which the record date is prior to the date the shares of Stock are
issued, except as provided in Section 8 of the Plan. 
 ARTICLE V. 

OTHER PROVISIONS 
 5.1
Administration. The Administrator shall have the power to interpret the Plan and this Agreement and to adopt such rules for the administration, interpretation and application of the Plan as are consistent therewith and to interpret, amend or
revoke any such rules. All actions taken and all interpretations and determinations made by the Administrator in good faith shall be final and binding upon Participant, the Company and all other interested persons. No member of the Committee or the
Board shall be personally liable for any action, determination or interpretation made in good faith with respect to the Plan, this Agreement or the Option. 

5.2 Option Transferability. 

(a) Except as otherwise set forth in Section 5.2(b), (i) the Option may not be sold, pledged, assigned or transferred
in any manner other than by will or the laws of descent and distribution, unless and until the shares of Stock underlying the Option have been issued, and all restrictions applicable to such shares of Stock have lapsed. Neither the Option nor any
interest or right therein shall be liable for the debts, contracts or engagements of Participant or his or her successors in interest or shall be subject to disposition by transfer, alienation, anticipation, pledge, encumbrance, assignment or any
other means whether such disposition be voluntary or involuntary or by operation of law by judgment, levy, attachment, garnishment or any other legal or equitable proceedings (including bankruptcy), and any attempted disposition thereof shall be
null and void and of no effect, except to the extent that such disposition is permitted by the preceding sentence; and (ii) during the lifetime of Participant, only Participant may exercise the Option or any portion thereof. After the death of
Participant, any exercisable portion of the Option may, prior to the time when the Option becomes unexercisable under Section 3.3, be exercised by Participant’s personal representative or by any person empowered to do so under the deceased
Participant’s will or under the then applicable laws of descent and distribution. 
 (b) Notwithstanding the foregoing,
with respect to Participants who are corporate officers or operating presidents, the Administrator may permit any portion of the Option that is not an Incentive Stock Option to be 

  
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transferred to, exercised by and paid to certain persons or entities related to such Participant, including but not limited to members of such Participant’s family, charitable institutions
or trusts or other entities whose beneficiaries or beneficial owners are members of such Participant’s family and/or charitable institutions, or to such other persons or entities as may be expressly approved by the Administrator, pursuant to
such conditions and procedures as the Administrator may establish. Any permitted transfer shall be subject to the condition that the Administrator receive evidence satisfactory to it that the transfer is being made for estate and/or tax planning
purposes (or to a “blind trust” in connection with such Participant’s termination of employment or service with the Company or a Subsidiary to assume a position with a governmental, charitable, educational or similar non-profit
institution) and on a basis consistent with the Company’s lawful issue of securities. 
 5.3 

5.4 Notices. Any notice to be given under the terms of this Agreement to the Company shall be addressed to the Company in care of the
Secretary of the Company at the address given beneath the signature of the Company’s authorized officer on the Grant Notice, and any notice to be given to Participant shall be addressed to Participant at the address given beneath
Participant’s signature on the Grant Notice. By a notice given pursuant to this Section 5.4, either party may hereafter designate a different address for notices to be given to that party. Any notice which is required to be given to
Participant shall, if Participant is then deceased, be given to the person entitled to exercise his or her Option pursuant to Section 4.1 by written notice under this Section 5.4. Any notice shall be deemed duly given when sent via email
or when sent by certified mail (return receipt requested) and deposited (with postage prepaid) in a post office or branch post office regularly maintained by the United States Postal Service. 

5.5 Titles. Titles are provided herein for convenience only and are not to serve as a basis for interpretation or construction of this
Agreement. 
 5.6 Governing Law; Severability. The laws of the State of Delaware shall govern the interpretation, validity,
administration, enforcement and performance of the terms of this Agreement regardless of the law that might be applied under principles of conflicts of laws. 

5.7 Conformity to Securities Laws. The Participant acknowledges that the Plan and this Agreement are intended to conform to the extent
necessary with all provisions of the Securities Act and the Exchange Act and any and all regulations and rules promulgated by the Securities and Exchange Commission thereunder, and state securities laws and regulations. Notwithstanding anything
herein to the contrary, the Plan shall be administered, and the Option is granted and may be exercised, only in such a manner as to conform to such laws, rules and regulations. To the extent permitted by applicable law, the Plan and this Agreement
shall be deemed amended to the extent necessary to conform to such laws, rules and regulations. 
 5.8 Amendments, Suspension and
Termination. To the extent permitted by the Plan, this Agreement may be wholly or partially amended or otherwise modified, suspended or terminated at any time or from time to time by the Committee or the Board, provided, that, except as
may otherwise be provided by the Plan, no amendment, modification, suspension or termination of this Agreement shall adversely affect the Option in any material way without the prior written consent of the Participant. 

5.9 Successors and Assigns. The Company may assign any of its rights under this Agreement to single or multiple assignees, and this
Agreement shall inure to the benefit of the successors and assigns of the Company. Subject to the restrictions on transfer herein set forth in Section 5.2, this Agreement shall be binding upon Participant and his or her heirs, executors,
administrators, successors and assigns. 
 5.10 Notification of Disposition. If this Option is designated as an Incentive Stock
Option, Participant shall give prompt notice to the Company of any disposition or other transfer of any shares of Stock acquired under this Agreement if such disposition or transfer is made (a) within two years from the Grant Date with respect
to such shares of Stock or (b) within one year after the transfer of such shares of Stock to him. 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 Participant in such disposition or other transfer. 
 5.11 Limitations Applicable to
Section 16 Persons. Notwithstanding any other provision of the Plan or this Agreement, if Participant is subject to Section 16 of the Exchange Act, the Plan, the Option and this Agreement shall be subject to any additional limitations
set forth in any applicable exemptive rule under Section 16 of the 

  
 9 

 
Exchange Act (including any amendment to Rule 16b-3 of the Exchange Act) that are requirements for the application of such exemptive rule. To the extent permitted by applicable law, this
Agreement shall be deemed amended to the extent necessary to conform to such applicable exemptive rule. 
 5.12 Not a Contract of
Employment. Nothing in this Agreement or in the Plan shall confer upon the Participant any right to continue to serve as an employee or other service provider of the Company or any of its Subsidiaries. 

5.13 Entire Agreement. The Plan, the Grant Notice and this Agreement (including all Exhibits thereto) constitute the entire agreement
of the parties and supersede in their entirety all prior undertakings and agreements of the Company and Participant with respect to the subject matter hereof. 

5.14 Section 409A. Notwithstanding any other provision of the Plan, this Agreement or the Grant Notice, the Plan, this Agreement
and the Grant Notice shall be interpreted in accordance with, and incorporate the terms and conditions required by, Section 409A of the U.S. Internal Revenue Code of 1986, as amended (together with any Department of Treasury regulations and
other interpretive guidance issued thereunder, including without limitation any such regulations or other guidance that may be issued after the date hereof, “Section 409A”). The Committee reserves the right (without the
obligation to do so or to indemnify the Participant for the failure to do so) to adopt such amendments to the Plan, this Agreement or the Grant Notice or adopt other policies and procedures (including amendments, policies and procedures with
retroactive effect), or take any other actions, as the Committee determines are necessary or appropriate to exempt the Option from Section 409A or to comply with the requirements of Section 409A and thereby avoid the penalty taxes under
Section 409A. 

  
 10 

 EXHIBIT B [FOR USE WITH FIVE YEAR AWARDS] 

VESTING 
 Annual
Operational Performance per Diluted Share1 
  

																	
	 	  	Minimum Vesting (10% Growth)	 	  	Maximum Vesting (17.5%
Growth)	 
	 Fiscal Year (A)
	  	% of
Shares
Vesting
(B)	 	 	YE
Operating
Performance
(per Diluted
Share)
(C)	 	  	% of
Shares
Vesting
(D)	 	 	YE
Operating
Performance
(per Diluted
Share)
(E)	 
	 2013
	  	 	5	% 	 	$	69.65	  	  	 	20	% 	 	$	75.75	  
	 2014
	  	 	5	% 	 	$	50.03	  	  	 	20	% 	 	$	62.05	  
	 2015
	  	 	5	% 	 	$	55.03	  	  	 	20	% 	 	$	72.91	  
	 2016
	  	 	5	% 	 	$	60.53	  	  	 	20	% 	 	$	85.67	  
	 2017
	  	 	5	% 	 	$	66.59	  	  	 	20	% 	 	$	100.66	  

 1. Annual Operational Performance Vesting. Effective as of the last day of each of the Company’s fiscal years
2013-2017 there shall become vested the percentage of shares covered by the Option which is equal to the Annual Amount (as described below). The Options shall become vested and exercisable as of the date that the Administrator verifies the AOP (as
defined below); provided, however, the vesting hereunder will be effective as to Participant as of the end of the fiscal year to which such Annual Amount relates (notwithstanding any termination of Participant’s employment during the period
between the end of such fiscal year and the verification of the AOP and, in such case, notwithstanding the provisions of Section 3.1(b)). For each such fiscal year, the Administrator shall verify the AOP, and shall notify the Company’s
Chief Executive Officer of its determination with respect thereto, within ten business days after the Administrator receives the Company’s audited financial statements for that fiscal year. 

X. For each year (the “performance year”), the Annual Amount is zero if the Annual Operational Performance per Diluted Share (“AOP”)1 with respect to such year is less than the amount indicated for such year in column (C) and otherwise shall be equal to the amount indicated for such year in column (B) plus the product of
(a) the excess of (1) the amount indicated for such year in column (D) over (2) the amount indicated for such year in column (B) and (b) the ratio of (1) the excess of (x) the AOP with respect to the year (but
not more than the amount indicated in Column (E) for such year) over (y) the amount indicated for such year in column (C) to (2) the excess of (x) the amount indicated for such year in column (E) over (y) the
amount indicated for such year in column (C). 
 Y. In calculating the AOP in Section X. above for any performance year there shall also be taken into
account any AOP in any of the two prior performance years (starting in fiscal year 2013) which was in excess of the amount indicated in Column (E) for such prior year and has not previously been taken into account hereunder but only if doing so
would increase the Annual Amount in such performance year. 
 Z. If the Annual Amount in any performance year is less than the amount indicated in column
(D) for such year then an amount equal to the excess of (1) the amount indicated in column (D) for such year over (2) the actual Annual Amount for such year may vest in one or more of the next two following years by treating as
AOP in the performance year under Section X. above any excess of AOP in one of such following years over the amount indicated in column (E) for the applicable following year. The portion of any excess AOP amount which is so used may not be used
more than once. 
 2. Adjustments of Operational Performance Objectives. The Operational Performance targets specified in this Exhibit B are
based upon certain revenue and expense assumptions about the future business of the Company as of the date the Option is granted. Accordingly, in the event that, after such date, the Administrator determines, in its 

 
  

	1 	 As of a given date, the Company’s “Annual Operational Performance per Diluted Share” shall mean the ratio of (1) the excess of
(a) the product of (i) EBITDA and (ii) the Fixed Market Multiple (as defined below) over (b) Net Debt to (2) the Company’s number of Diluted Shares as of such date, where “EBITDA,” “Net Debt” and
“Diluted Shares” have the meanings set forth in the Stock Option Agreement set forth on Exhibit A. For purposes of this Exhibit C, the Fixed Market Multiple shall mean 10.045, as adjusted for the weighted EBITDA multiple of
future acquisitions as determined by the Committee. 

  
 11 

 
sole discretion, that any acquisition or disposition of any business by the Company or any dividend or other distribution (whether in the form of cash, Stock, other securities or other property),
recapitalization, reclassification, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination, repurchase, or exchange of Stock or other securities of the Company, issuance of warrants or other rights
to purchase Stock or other securities of the Company, any unusual or nonrecurring transactions or events affecting the Company, or the financial statements of the Company, or change in applicable laws, regulations, or accounting principles occurs
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 to be made available under the Plan or with respect to the Option, then the
Administrator may, in good faith and in such manner as it may deem equitable, adjust the amounts set forth on this Exhibit B (and/or adjust the definitions of EBITDA and Net Debt) to reflect the projected effect of such transaction(s) or
event(s) on Operational Performance. 

  
 12 

 EXHIBIT B [FOR USE WITH TWO-YEAR EXTENSION GRANTS] 

VESTING 
 Annual
Operational Performance per Diluted Share1 
  

																	
	 	  	Minimum Vesting (10%
Growth)	 	  	Maximum Vesting (17.5%
Growth)	 
	 Fiscal Year (A)
	  	% of
Shares
Vesting
(B)	 	 	YE
Operating
Performance
(per Diluted
Share)
(C)	 	  	% of
Shares
Vesting
(D)	 	 	YE
Operating
Performance
(per Diluted
Share)
(E)	 
	 2016
	  	 	12.5	% 	 	$	60.53	  	  	 	50	% 	 	$	85.67	  
	 2017
	  	 	12.5	% 	 	$	66.59	  	  	 	50	% 	 	$	100.66	  

 1. Annual Operational Performance Vesting. Effective as of the last day of each of the Company’s fiscal years
2016-2017 there shall become vested the percentage of shares covered by the Option which is equal to the Annual Amount (as described below). The Options shall become vested and exercisable as of the date that the Administrator verifies the AOP (as
defined below); provided, however, the vesting hereunder will be effective as to Participant as of the end of the fiscal year to which such Annual Amount relates (notwithstanding any termination of Participant’s employment during the period
between the end of such fiscal year and the verification of the AOP and, in such case, notwithstanding the provisions of Section 3.1(b)). For each such fiscal year, the Administrator shall verify the AOP, and shall notify the Company’s
Chief Executive Officer of its determination with respect thereto, within ten business days after the Administrator receives the Company’s audited financial statements for that fiscal year. 

X. For each year (the “performance year”), the Annual Amount is zero if the Annual Operational Performance per Diluted Share2 (“AOP”) with respect to such year is less than the amount indicated for such year in column (C) and otherwise shall be equal to the amount indicated for such year in column
(B) plus the product of (a) the excess of (1) the amount indicated for such year in column (D) over (2) the amount indicated for such year in column (B) and (b) the ratio of (1) the excess of (x) the AOP
with respect to the year (but not more than the amount indicated in Column (E) for such year) over (y) the amount indicated for such year in column (C) to (2) the excess of (x) the amount indicated for such year in column
(E) over (y) the amount indicated for such year in column (C). 
 Y. In calculating the AOP in Section X. above for any performance year
there shall also be taken into account any AOP in any of the two prior performance years (starting in fiscal year 2014) which was in excess of the amount indicated in Column (E) or set forth in the following sentence for such prior year and has
not previously been taken into account hereunder or under any other option agreement to which the Participant is a party but only if doing so would increase the Annual Amount in such performance year. For purposes of determining whether AOP has been
exceeded and the amount of any excess, the YE Operating Performance per Diluted Share applicable to 2014 shall be $62.05 and to 2015 shall be $72.91. If the Participant is subsequently awarded options vesting in 2018 and 2019, any AOP in excess of
the amount indicated in Column (E) (and not previously taken into account hereunder) may be used in one or more of the next two following years by treating such AOP in the performance year under the option agreement granting said options. 

Z. If the Annual Amount in 2016 is less than the amount indicated in column (D) for 2016 then an amount equal to the excess of (1) the amount
indicated in column (D) for 2016r over (2) the actual Annual Amount for 2016 may vest in 2017 by treating as AOP in 2016. above any excess of AOP in 2017 over the amount indicated in column (E) for 2017. The portion of any excess AOP
amount which is so used may not be used more than once. 
  
  

	2 	As of a given date, the Company’s “Annual Operational Performance per Diluted Share” shall mean the ratio of (1) the excess of (a) the product of (i) EBITDA and (ii) the Fixed Market
Multiple (as defined below) over (b) Net Debt to (2) the Company’s number of Diluted Shares as of such date, where “EBITDA,” “Net Debt” and “Diluted Shares” have the meanings set forth in the Stock Option
Agreement set forth on Exhibit A. For purposes of this Exhibit C, the Fixed Market Multiple shall mean 10.045, as adjusted for the weighted EBITDA multiple of future acquisitions as determined by the Committee. 

  
 13 

 2. Adjustments of Operational Performance Objectives. The Operational Performance targets specified in
this Exhibit B are based upon certain revenue and expense assumptions about the future business of the Company as of the date the Option is granted. Accordingly, in the event that, after such date, the Administrator determines, in its sole
discretion, that any acquisition or disposition of any business by the Company or any dividend or other distribution (whether in the form of cash, Stock, other securities or other property), recapitalization, reclassification, stock split, reverse
stock split, reorganization, merger, consolidation, split-up, spin-off, combination, repurchase, or exchange of Stock or other securities of the Company, issuance of warrants or other rights to purchase Stock or other securities of the Company, any
unusual or nonrecurring transactions or events affecting the Company, or the financial statements of the Company, or change in applicable laws, regulations, or accounting principles occurs 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 to be made available under the Plan or with respect to the Option, then the Administrator may, in good faith and in such manner as it may
deem equitable, adjust the amounts set forth on this Exhibit B (and/or adjust the definitions of EBITDA and Net Debt) to reflect the projected effect of such transaction(s) or event(s) on Operational Performance. 

  
 14 

 EXHIBIT C 

STOCK RETENTION GUIDELINES 

As a condition to receiving the Option grant, Participant acknowledges and agrees to hold a number of shares and/or options with such value
and for such period of time as set forth below: 
 (a) At all times during Participant’s continued employment by the Company,
Participant shall hold an aggregate amount of Company equity with a value equal to or greater than $             (the “Retention Limit”). This Retention Limit will
supersede any Retention Limit in any prior dated option agreement between the Company and Participant pursuant to the Plan. 
 For purposes
of this Exhibit C, Company equity shall be equal to (i) the Fair Market Value of any Common Stock held by the Participant plus (ii) the value of vested options then held by Participant, whether granted pursuant to the Plan, the
Company’s 2003 Stock Option Plan or otherwise, which will be equal to the Fair Market Value of the Common Stock underlying the options over the exercise price. 

(b) If at any time after the date hereof the aggregate amount of Company equity held by Participant falls below the Retention Limit because of
a decline in the Fair Market Value of the Common Stock, Participant will have three years to reach the Retention Limit before the Administrator may exercise any remedies under paragraph (d). 

(c) Participant shall not be obligated to comply with the Retention Limit until five years from the date of grant; provided, however, that
notwithstanding the foregoing, Participant may not make any sales of vested Options until the Retention Limit is reached, and thereafter, only to the extent that Participant would, at the time of the sale, be in compliance with the Retention Limit,
except that Participants may make sales under 10b5-1 plans in existence on the date hereof so long as such sales would be in compliance with any preexisting Retention Limit. 

(d) Participant’s failure to hold that number of shares and/or vested options set forth in this Exhibit C shall result in
Participant’s forfeiture of all unvested Options unless otherwise determined by the Administrator, in its sole discretion. 

  
 15

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