Document:

EX-10.9

 Exhibit 10.9 

ARSANIS, INC. 
 NON-QUALIFIED OPTION AGREEMENT 
 Arsanis, Inc. (the “Company”) hereby grants the
following stock option pursuant to its 2017 Equity Incentive Plan. The terms and conditions attached hereto are also a part hereof. 

Notice of Grant 
  

			
	Name of optionee (the “Participant”):	 	 
	Grant Date:	 	 
	Number of shares of the Company’s Common	 	 
	Stock subject to this option (“Shares”):	 	 
	Option exercise price per Share:	 	 
	Number, if any, of Shares that vest immediately on the grant date:	 	 
	Shares that are subject to vesting schedule:	 	 
	Vesting Start Date:	 	 
	Final Exercise Date:	 	 

Vesting Schedule: 
  

			
	 	 	 
	 	 	 
	 	 	 
	All vesting is dependent on the Participant remaining an Eligible Participant,
as provided herein.

 This option satisfies in full all commitments that the Company has to the Participant with 

respect to the issuance of stock, stock options or other equity securities. 
  

									
		 		 		 	ARSANIS, INC.
	  
 Signature of
Participant
	 		 		 	
		 		 		 	By:	 	  

	  
 Street Address
	 		 		 	Name of Officer
		 		 		 		 	Title:
	  
 City/State/Zip
Code
	 		 		 	

 ARSANIS, INC. 

Non-Qualified Option Agreement 

Incorporated Terms and Conditions 
  

	1.	Grant of Option. 

 This agreement evidences the grant by the Company, on the grant
date (the “Grant Date”) set forth in the Notice of Grant that forms part of this agreement (the “Notice of Grant”), to the Participant of an option to purchase, in whole or in part, on the terms provided
herein and in the Company’s 2017 Equity Incentive Plan (the “Plan”), the number of Shares set forth in the Notice of Grant of common stock, $0.001 par value per share, of the Company (“Common Stock”), at
the exercise price per Share set forth in the Notice of Grant. Unless earlier terminated, this option shall expire at 5:00 p.m., Eastern time, on the Final Exercise Date set forth in the Notice of Grant (the “Final Exercise
Date”). 
 It is intended that the option evidenced by this agreement shall not be an incentive stock option as defined in
Section 422 of the Internal Revenue Code of 1986, as amended, and any regulations promulgated thereunder (the “Code”). Except as otherwise indicated by the context, the term “Participant”, as used in this
option, shall be deemed to include any person who acquires the right to exercise this option validly under its terms. 
  

	2.	Vesting Schedule. 

 This option will become exercisable (“vest”) in
accordance with the vesting schedule set forth in the Notice of Grant. 
 The right of exercise shall be cumulative so that to the extent the
option is not exercised in any period to the maximum extent permissible it shall continue to be exercisable, in whole or in part, with respect to all Shares for which it is vested until the earlier of the Final Exercise Date or the termination of
this option under Section 3 hereof or the Plan. 
  

	3.	Exercise of Option. 

 (a) Form of Exercise. Each election to exercise this option
shall be in writing, in the form of the Stock Option Exercise Notice attached as Annex A, signed by the Participant, and received by the Company at its principal office, accompanied by this agreement, or in such other form (which may be
electronic) as is approved by the Company, together with payment in full in the manner provided in the Plan. The Participant may purchase less than the number of shares covered hereby, provided that no partial exercise of this option may be for any
fractional share. 
 (b) Continuous Relationship with the Company Required. Except as otherwise provided in this Section 3, this
option may not be exercised unless the Participant, at the time he or she exercises this option, is, and has been at all times since the Grant Date, an employee, director or officer of, or consultant or advisor to, the Company or any other entity
the employees, officers, directors, consultants, or advisors of which are eligible to receive option grants under the Plan (an “Eligible Participant”). 

  
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 (c) Termination of Relationship with the Company. If the Participant ceases to be an
Eligible Participant for any reason, then, except as provided in paragraphs (d) and (e) below, the right to exercise this option shall terminate three months after such cessation (but in no event after the Final Exercise Date),
provided that this option shall be exercisable only to the extent that the Participant was entitled to exercise this option on the date of such cessation. 

Notwithstanding the foregoing, if the Participant, prior to the Final Exercise Date, violates the restrictive covenants (including, without
limitation, the non-competition, non-solicitation, or confidentiality provisions) of any employment contract, the
Non-Competition, Non-Solicitation, Confidentiality and Assignment of Inventions agreement to which the Participant is a party, if any, or any other agreement between the
Participant and the Company, the right to exercise this option shall terminate immediately upon such violation. 
 (d) Exercise Period
Upon Death or Disability. If the Participant dies or becomes disabled (within the meaning of Section 22(e)(3) of the Code) prior to the Final Exercise Date while he or she is an Eligible Participant and the Company has not terminated such
relationship for “cause” as specified in paragraph (e) below, this option shall be exercisable, within the period of one year following the date of death or disability of the Participant, by the Participant (or in the case of death by
an authorized transferee), provided that this option shall be exercisable only to the extent that this option was exercisable by the Participant on the date of his or her death or disability, and further provided that this option shall
not be exercisable after the Final Exercise Date. 
 (e) Termination for Cause. If, prior to the Final Exercise Date, the
Participant’s employment or other relationship with the Company is terminated by the Company for Cause (as defined below), the right to exercise this option shall terminate immediately upon the effective date of such termination of employment
or other relationship. If, prior to the Final Exercise Date, the Participant is given notice by the Company of the termination of his or her employment by the Company for Cause, and the effective date of such employment termination is subsequent to
the date of delivery of such notice, the right to exercise this option shall be suspended from the time of the delivery of such notice until the earlier of (i) such time as it is determined or otherwise agreed that the Participant’s
employment shall not be terminated for Cause as provided in such notice or (ii) the effective date of such termination of employment (in which case the right to exercise this option shall, pursuant to the preceding sentence, terminate upon the
effective date of such termination of employment). If the Participant is subject to an individual employment agreement with the Company or eligible to participate in a Company severance plan or arrangement, in any case which agreement, plan or
arrangement contains a definition of “cause” for termination of employment, “Cause” shall have the meaning ascribed to such term in such agreement, plan or arrangement. Otherwise, “Cause” shall mean willful misconduct
by the Participant or willful failure by the Participant to perform his or her responsibilities to the Company (including, without limitation, breach by the Participant of any provision of any employment, consulting, advisory, nondisclosure, non-competition or other similar agreement between the Participant and the Company), as determined by the Company, which determination shall be conclusive. The Participant’s employment shall be considered to
have been terminated for Cause if the Company determines, within 30 days after the Participant’s resignation, that termination for Cause was warranted. 

  
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	4.	Withholding. 

 No Shares will be issued pursuant to the exercise of this option unless
and until the Participant pays to the Company, or makes provision satisfactory to the Company for payment of, any federal, state or local withholding taxes required by law to be withheld in respect of this option. 

 

	5.	Transfer Restrictions; Clawback. 

 (a) This option may not be sold, assigned,
transferred, pledged or otherwise encumbered by the Participant, either voluntarily or by operation of law, except by will or the laws of descent and distribution, and, during the lifetime of the Participant, this option shall be exercisable only by
the Participant. 
 (b) In accepting this option, the Participant agrees to be bound by any clawback policy that the Company may adopt in the
future. 
  

	6.	Provisions of the Plan. 

 This option is subject to the provisions of the Plan (including
the provisions relating to amendments to the Plan), a copy of which is furnished to the Participant with this option. 

  
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 ANNEX A 

ARSANIS, INC. 
 Stock Option
Exercise Notice 
 Arsanis, Inc. 
 890 Winter Street Suite
230 
 Waltham, MA 02451 
 Dear Sir or Madam: 

I,                      (the
“Participant”), hereby irrevocably exercise the right to purchase                      shares of the Common Stock, $0.001 par
value per share (the “Shares”), of Arsanis, Inc. (the “Company”) at $                     per share pursuant
to the Company’s 2017 Equity Incentive Plan and a stock option agreement with the Company dated                      (the “Option
Agreement”). Enclosed herewith is a payment of $                    , the aggregate purchase price for the Shares. The
certificate for the Shares should be registered in my name as it appears below or, if so indicated below, jointly in my name and the name of the person designated below, with right of survivorship. 

 

			
	Dated:	 	  

	
	  

Signature

	 Print Name:

	
	 Address:

 
  

 Name and address of persons in whose name the Shares are to be jointly registered (if applicable): 

			
	
	  

  
 - 5 -EX-10.10

 Exhibit 10.10 

ARSANIS, INC. 
 2017 EMPLOYEE
STOCK PURCHASE PLAN 
 The purpose of this 2017 Employee Stock Purchase Plan (this “Plan”) is to provide eligible employees of
Arsanis, Inc. (the “Company”) and certain of its subsidiaries with opportunities to purchase shares of the Company’s common stock, $0.001 par value per share (the “Common Stock”), commencing at such time and on such dates as
the Board of Directors of the Company (the “Board”) shall determine. Subject to adjustment under Section 15 hereof, the number of shares of Common Stock that have been approved for this purpose is the sum of: 

(a) 750,000 shares of Common Stock; plus 

(b) an annual increase to be added on the first day of each fiscal year, commencing on January 1, 2019 and ending on
December 31, 2029, equal to the least of (i) 1,750,000 shares of Common Stock, (ii) 2% of the outstanding shares on such date and (iii) an amount determined by the Board. 

This Plan is intended to qualify as an “employee stock purchase plan” as defined in Section 423 of the Internal Revenue Code of 1986, as
amended (the “Code”), and the regulations issued thereunder, and shall be interpreted consistent therewith. 
 1.
Administration. The Plan will be administered by the Board or by a Committee appointed by the Board (the “Committee”). The Board or the Committee has authority to make rules and regulations for the administration of the Plan and its
interpretation and decisions with regard thereto shall be final and conclusive. 
 2. Eligibility. All employees of the Company and
all employees of any subsidiary of the Company (as defined in Section 424(f) of the Code) designated by the Board or the Committee from time to time (a “Designated Subsidiary”), are eligible to participate in any one or more of the
offerings of Options (as defined in Section 9) to purchase Common Stock under the Plan provided that: 
 (a) they are
customarily employed by the Company or a Designated Subsidiary for more than 20 hours a week and for more than five months in a calendar year; 

(b) they have been employed by the Company or a Designated Subsidiary for at least three (3) months prior to enrolling in
the Plan; and 
 (c) they are employees of the Company or a Designated Subsidiary on the first day of the applicable Plan
Period (as defined below). 
 No employee may be granted an Option hereunder if such employee, immediately after the Option is granted,
owns 5% or more of the total combined voting power or value of the stock of the Company or any subsidiary. For purposes of the preceding sentence, the attribution rules of Section 424(d) of the Code shall apply in determining the
stock ownership of an employee, and all stock that the employee has a contractual right to purchase shall be treated as stock owned by the employee. 

 The Company retains the discretion to determine which eligible employees may participate in an
offering pursuant to and consistent with Treasury Regulation Sections 1.423-2(e) and (f). 
 3.
Offerings. The Company will make one or more offerings (“Offerings”) to employees to purchase stock under this Plan. Offerings will begin at such time and on such dates as the Board shall determine, or the first business day
thereafter (such dates, the “Offering Commencement Dates”). Each Offering Commencement Date will begin a six (6) month period (a “Plan Period”) during which payroll deductions will be made and held for the purchase of Common
Stock at the end of the Plan Period. However, the Board or the Committee may, at its discretion, choose a different Plan Period of not more than twelve (12) months for Offerings. 

4. Participation. An employee eligible on the Offering Commencement Date of any Offering may participate in such Offering by completing
and forwarding either a written or electronic payroll deduction authorization form to the employee’s appropriate payroll office at least 15 days prior to the applicable Offering Commencement Date. The form will authorize a regular payroll
deduction from the Compensation received by the employee during the Plan Period. Unless an employee files a new form or withdraws from the Plan, his or her deductions and purchases will continue at the same rate for future Offerings under the Plan
as long as the Plan remains in effect. The term “Compensation” means the amount of money reportable on the employee’s Federal Income Tax Withholding Statement, excluding overtime, shift premium, incentive or bonus awards, allowances
and reimbursements for expenses such as relocation allowances for travel expenses, income or gains associated with the grant or vesting of restricted stock, income or gains on the exercise of Company stock options or stock appreciation rights, and
similar items, whether or not shown or separately identified on the employee’s Federal Income Tax Withholding Statement, but including, in the case of salespersons, sales commissions to the extent determined by the Board or the Committee. 

5. Deductions. The Company will maintain payroll deduction accounts for all participating employees. With respect to any Offering made
under this Plan, an employee may authorize a payroll deduction in any percentage amount (in whole percentages) up to a maximum of 15% of the Compensation he or she receives during the Plan Period
or such shorter period during which deductions from payroll are made. The Board or the Committee may, at its discretion, designate a lower maximum contribution rate. The minimum payroll deduction is such percentage of Compensation as may be
established from time to time by the Board or the Committee. 
 6. Deduction Changes. An employee may decrease or discontinue his or
her payroll deduction once during any Plan Period, by filing either a written or electronic new payroll deduction authorization form. However, an employee may not increase his or her payroll deduction during a Plan Period. If an employee
elects to discontinue his or her payroll deductions during a Plan Period, but does not elect to withdraw his or her funds pursuant to Section 8 hereof, funds deducted prior to his or her election to discontinue will be applied to the purchase
of Common Stock on the Exercise Date (as defined below). 

  
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 7. Interest. Interest will not be paid on any employee accounts, except to the extent that
the Board or the Committee, in its sole discretion, elects to credit employee accounts with interest at such rate as it may from time to time determine. 

8. Withdrawal of Funds. An employee may at any time prior to the close of business on the fifteenth business day prior to the end of a
Plan Period and for any reason permanently draw out the balance accumulated in the employee’s account and thereby withdraw from participation in an Offering. Partial withdrawals are not permitted. The employee may not begin participation again
during the remainder of the Plan Period during which the employee withdrew his or her balance. The employee may participate in any subsequent Offering in accordance with terms and conditions established by the Board or the Committee. 

9. Purchase of Shares. 

(a) Number of Shares. On the Offering Commencement Date, the Company will grant to each eligible employee who is then a participant in
the Plan an option (an “Option”) to purchase on the last business day of such Plan Period (the “Exercise Date”) at the applicable purchase price (the “Option Price”) up to that number of shares of Common Stock
determined by multiplying $2,083 by the number of full months in the Plan Period and dividing the result by the closing price (as determined below) on the Offering Commencement Date; provided, however, that no employee may be granted an Option which
permits his or her rights to purchase Common Stock under this Plan and any other employee stock purchase plan (as defined in Section 423(b) of the Code) of the Company and its subsidiaries, to accrue at a rate which exceeds $25,000 of the fair
market value of such Common Stock (determined at the date such Option is granted) for each calendar year in which the Option is outstanding at any time; and, provided, further, however, that the Committee may, in its discretion, set a fixed maximum
number of shares of Common Stock that each eligible employee may purchase per Plan Period which number may not be greater than the number of shares of Common Stock determined by using the formula in the first clause of this Section 9(a) and
which number shall be subject to the second clause of this Section 9(a). 
 (b) Option Price. The Board or the Committee shall
determine the Option Price for each Plan Period, including whether such Option Price shall be determined based on the lesser of the closing price of the Common Stock on (i) the first business day of the Plan Period or (ii) the Exercise
Date, or shall be based solely on the closing price of the Common Stock on the Exercise Date; provided, however, that such Option Price shall be at least 85% of the applicable closing price. In the absence of a determination by the Board or the
Committee, the Option Price will be 85% of the lesser of the closing price of the Common Stock on (i) the first business day of the Plan Period or (ii) the Exercise Date. The closing price shall be (a) the closing price (for the
primary trading session) on any national securities exchange on which the Common Stock is listed or (b) the average of the closing bid and asked prices in the
over-the-counter-market, whichever is applicable, as published in The Wall Street Journal or another source selected by the Board or the Committee. If no sales of
Common Stock were made on such a day, the price of the Common Stock shall be the reported price for the next preceding day on which sales were made. 

  
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 (c) Exercise of Option. Each employee who continues to be a participant in the Plan on the
Exercise Date shall be deemed to have exercised his or her Option at the Option Price on such date and shall be deemed to have purchased from the Company the number of whole shares of Common Stock reserved for the purpose of the Plan that his or her
accumulated payroll deductions on such date will pay for, but not in excess of the maximum numbers determined in the manner set forth above. 

(d) Return of Unused Payroll Deductions. Any balance remaining in an employee’s payroll deduction account at the end of a Plan
Period will be automatically refunded to the employee, except that any balance that is less than the purchase price of one share of Common Stock will be carried forward into the employee’s payroll deduction account for the following Offering,
unless the employee elects not to participate in the following Offering under the Plan, in which case the balance in the employee’s account shall be refunded. 

10. Issuance of Certificates. Certificates representing shares of Common Stock purchased under the Plan may be issued only in the name
of the employee, in the name of the employee and another person of legal age as joint tenants with rights of survivorship, or (in the Company’s sole discretion) in the name of a brokerage firm, bank, or other nominee holder designated by the
employee. The Company may, in its sole discretion and in compliance with applicable laws, authorize the use of book entry registration of shares in lieu of issuing stock certificates. 

11. Rights on Retirement, Death or Termination of Employment. If a participating employee’s employment ends before the last
business day of a Plan Period, no payroll deduction shall be taken from any pay then due and owing to the employee and the balance in the employee’s account shall be paid to the employee. In the event of the employee’s death before the
last business day of a Plan Period, the Company shall, upon notification of such death, pay the balance of the employee’s account (a) to the executor or administrator of the employee’s estate or (b) if no such executor or
administrator has been appointed to the knowledge of the Company, to such other person(s) as the Company may, in its discretion, designate. If, before the last business day of the Plan Period, the Designated Subsidiary by which an employee is
employed ceases to be a subsidiary of the Company, or if the employee is transferred to a subsidiary of the Company that is not a Designated Subsidiary, the employee shall be deemed to have terminated employment for the purposes of this
Plan. 
 12. Optionees Not Stockholders. Neither the granting of an Option to an employee nor the deductions from his or her pay
shall make such employee a stockholder of the shares of Common Stock covered by an Option under this Plan until he or she has purchased and received such shares. 

13. Options Not Transferable. Options under this Plan are not transferable by a participating employee other than by will or the laws of
descent and distribution, and are exercisable during the employee’s lifetime only by the employee. 
 14. Application of Funds.
All funds received or held by the Company under this Plan may be combined with other corporate funds and may be used for any corporate purpose. 

  
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 15. Adjustment for Changes in Common Stock and Certain Other
Events.     
 (a) Changes in Capitalization. In the event of any stock split, reverse stock split,
stock dividend, recapitalization, combination of shares, reclassification of shares, spin-off or other similar change in capitalization or event, or any dividend or distribution to holders of Common Stock
other than an ordinary cash dividend, (i) the number and class of securities available under this Plan, (ii) the share limitations set forth in Section 9, and (iii) the Option Price shall be equitably adjusted to the extent
determined by the Board or the Committee. 
 (b) Reorganization Events. 

(1) Definition. A “Reorganization Event” shall mean: (a) any merger or consolidation of the Company with or into another
entity as a result of which all of the Common Stock of the Company is converted into or exchanged for the right to receive cash, securities or other property or is cancelled, (b) any transfer or disposition of all of the Common Stock of the
Company for cash, securities or other property pursuant to a share exchange or other transaction or (c) any liquidation or dissolution of the Company. 

(2) Consequences of a Reorganization Event on Options. In connection with a Reorganization Event, the Board or the Committee may take
any one or more of the following actions as to outstanding Options on such terms as the Board or the Committee determines: (i) provide that Options shall be assumed, or substantially equivalent Options shall be substituted, by the acquiring or
succeeding corporation (or an affiliate thereof), (ii) upon written notice to employees, provide that all outstanding Options will be terminated immediately prior to the consummation of such Reorganization Event and that all such outstanding
Options will become exercisable to the extent of accumulated payroll deductions as of a date specified by the Board or the Committee in such notice, which date shall not be less than ten (10) days preceding the effective date of the
Reorganization Event, (iii) upon written notice to employees, provide that all outstanding Options will be cancelled as of a date prior to the effective date of the Reorganization Event and that all accumulated payroll deductions will be
returned to participating employees on such date, (iv) in the event of a Reorganization Event under the terms of which holders of Common Stock will receive upon consummation thereof a cash payment for each share surrendered in the
Reorganization Event (the “Acquisition Price”), change the last day of the Plan Period to be the date of the consummation of the Reorganization Event and make or provide for a cash payment to each employee equal to (A) (1) the
Acquisition Price times (2) the number of shares of Common Stock that the employee’s accumulated payroll deductions as of immediately prior to the Reorganization Event could purchase at the Option Price, where the Acquisition Price is
treated as the fair market value of the Common Stock on the last day of the applicable Plan Period for purposes of determining the Option Price under Section 9(b) hereof, and where the number of shares that could be purchased is subject to the
limitations set forth in Section 9(a), minus (B) the result of multiplying such number of shares by such Option Price, (v) provide that, in connection with a liquidation or dissolution of the Company, Options shall convert into the
right to receive liquidation proceeds (net of the Option Price thereof) and (vi) any combination of the foregoing. 

  
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 For purposes of clause (i) above, an Option shall be considered assumed if, following
consummation of the Reorganization Event, the Option confers the right to purchase, for each share of Common Stock subject to the Option immediately prior to the consummation of the Reorganization Event, the consideration (whether cash, securities
or other property) received as a result of the Reorganization Event by holders of Common Stock for each share of Common Stock held immediately prior to the consummation of the Reorganization Event (and if holders were offered a choice of
consideration, the type of consideration chosen by the holders of a majority of the outstanding shares of Common Stock); provided, however, that if the consideration received as a result of the Reorganization Event is not solely common stock of the
acquiring or succeeding corporation (or an affiliate thereof), the Company may, with the consent of the acquiring or succeeding corporation, provide for the consideration to be received upon the exercise of Options to consist solely of such number
of shares of common stock of the acquiring or succeeding corporation (or an affiliate thereof) that the Board determines to be equivalent in value (as of the date of such determination or another date specified by the Board) to the per share
consideration received by holders of outstanding shares of Common Stock as a result of the Reorganization Event. 
 16. Amendment of the
Plan. The Board may at any time, and from time to time, amend or suspend this Plan or any portion thereof, except that (a) if the approval of any such amendment by the shareholders of the Company is required by Section 423 of the Code,
such amendment shall not be effected without such approval, and (b) in no event may any amendment be made that would cause the Plan to fail to comply with Section 423 of the Code. 

17. Insufficient Shares. If the total number of shares of Common Stock specified in elections to be purchased under any Offering plus
the number of shares purchased under previous Offerings under this Plan exceeds the maximum number of shares issuable under this Plan, the Board or the Committee will allot the shares then available on a
pro-rata basis. 
 18. Termination of the Plan. This Plan may be terminated at any time by the
Board. Upon termination of this Plan all amounts in the accounts of participating employees shall be promptly refunded. 
 19.
Governmental Regulations. The Company’s obligation to sell and deliver Common Stock under this Plan is subject to listing on a national stock exchange (to the extent the Common Stock is then so listed or quoted) and the approval of
all governmental authorities required in connection with the authorization, issuance or sale of such stock. 
 20. Governing Law. The
Plan shall be governed by Delaware law except to the extent that such law is preempted by federal law. 
 21. Issuance of Shares.
Shares may be issued upon exercise of an Option from authorized but unissued Common Stock, from shares held in the treasury of the Company, or from any other proper source. 

22. Notification upon Sale of Shares. Each employee agrees, by participating in the Plan, to promptly give the Company notice of any
disposition of shares purchased under the Plan where such disposition occurs within two years after the date of grant of the Option pursuant to which such shares were purchased. 

  
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 23. Grants to Employees in Foreign Jurisdictions. The Company may, to comply with the laws
of a foreign jurisdiction, grant Options to employees of the Company or a Designated Subsidiary who are citizens or residents of such foreign jurisdiction (without regard to whether they are also citizens of the United States or resident aliens
(within the meaning of Section 7701(b)(1)(A) of the Code)) with terms that are less favorable (but not more favorable) than the terms of Options granted under the Plan to employees of the Company or a Designated Subsidiary who are resident in
the United States. Notwithstanding the preceding provisions of this Plan, employees of the Company or a Designated Subsidiary who are citizens or residents of a foreign jurisdiction (without regard to whether they are also citizens of the United
States or resident aliens (within the meaning of Section 7701(b)(1)(A) of the Code)) may be excluded from eligibility under the Plan if (a) the grant of an Option under the Plan to a citizen or resident of the foreign jurisdiction is
prohibited under the laws of such jurisdiction or (b) compliance with the laws of the foreign jurisdiction would cause the Plan to violate the requirements of Section 423 of the Code. The Company may add one or more appendices to this Plan
describing the operation of the Plan in those foreign jurisdictions in which employees are excluded from participation or granted less favorable Options. 

24. Authorization of Sub-Plans. The Board may from time to time establish one or more sub-plans under the Plan with respect to one or more Designated Subsidiaries, provided that such sub-plan complies with Section 423 of the Code. 

25. Withholding. If applicable tax laws impose a tax withholding obligation, each affected employee shall, no later than the date of the
event creating the tax liability, make provision satisfactory to the Board for payment of any taxes required by law to be withheld in connection with any transaction related to Options granted to or shares acquired by such employee pursuant to the
Plan. The Company may, to the extent permitted by law, deduct any such taxes from any payment of any kind otherwise due to an employee. 

26. Effective Date and Approval of Shareholders. The Plan shall take effect as of the immediately prior to the effectiveness of the
Company’s registration statement with respect to its initial public offering, subject to approval by the shareholders of the Company as required by Section 423 of the Code, which approval must occur within twelve months of the adoption of
the Plan by the Board. 
 Adopted by the Board of Directors on 

September 27, 2017 

Approved by the stockholders on 

[                ] 

  
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