Document:

2004 Equity Incentive Plan

  
 Exhibit 10.2

  
 2004 EQUITY INCENTIVE
PLAN 
 OF 
 THRESHOLD PHARMACEUTICALS, INC. 
  

	1.	Purpose of this Plan 

  
 The purpose of this 2004 Equity Incentive Plan is to enhance the long-term stockholder value of Threshold Pharmaceuticals, Inc. by offering opportunities
to eligible individuals to participate in the growth in value of the equity of Threshold Pharmaceuticals, Inc. 
  

	2.	Definitions and Rules of Interpretation 

  
 2.1 Definitions. 
  
 This Plan uses the following defined terms: 
  
 (a) “Administrator” means the Board or the Committee, or any officer or employee of the Company to whom the Board
or the Committee delegates authority to administer this Plan. 
  
 (b) “Affiliate” means a “parent” or “subsidiary” (as each is defined in Section 424 of the Code) of the Company and any other entity that the Board or Committee designates
as an “Affiliate” for purposes of this Plan. 
  
 (c) “Applicable Law” means any and all laws of whatever jurisdiction, within or without the United States, and the rules of any stock exchange or quotation system on which Shares are listed or quoted, applicable to
the taking or refraining from taking of any action under this Plan, including the administration of this Plan and the issuance or transfer of Awards or Award Shares. 
  
 (d) “Award” means a Stock Award, SAR, Cash Award, or Option granted in accordance
with the terms of this Plan. 
  
 (e)
“Award Agreement” means the document evidencing the grant of an Award. 
  
 (f) “Award Shares” means Shares covered by an outstanding Award or purchased under an Award. 
  
 (g) “Awardee” means: (i) a person to
whom an Award has been granted, including a holder of a Substitute Award, (ii) a person to whom an Award has been transferred in accordance with all applicable requirements of Sections 6.5, 7(h), and 16. 
  
 (h) “Board” means the Board of
Directors of the Company. 
  

 (i) “Cash Award” means the right to receive cash as described in
Section 8.3. 
  
 (j)
“Cause” means employment related dishonesty, fraud, misconduct or disclosure or misuse of confidential information, or other employment related conduct that is likely to cause significant injury to the Company, an Affiliate,
or any of their respective employees, officers or directors (including, without limitation, commission of a felony or similar offense), in each case as determined by the Administrator. “Cause” shall not require that a civil judgment or
criminal conviction have been entered against or guilty plea shall have been made by the Awardee regarding any of the matters referred to in the previous sentence. Accordingly, the Administrator shall be entitled to determine “Cause” based
on the Administrator’s good faith belief. If the Awardee is criminally charged with a felony or similar offense that shall be a sufficient, but not a necessary, basis for such belief. 
  
 (k) “Change in Control” means any
transaction or event that the Board specifies as a Change in Control under Section 10.4. 
  
 (l) “Code” means the Internal Revenue Code of 1986. 
  
 (m) “Committee” means a committee composed of Company Directors appointed in
accordance with the Company’s charter documents and Section 4. 
  
 (n) “Company” means Threshold Pharmaceuticals, Inc., a Delaware corporation. 
  
 (o) “Company Director” means a member of the Board. 
  
 (p) “Consultant” means an individual who, or an employee of any entity that,
provides bona fide services to the Company or an Affiliate not in connection with the offer or sale of securities in a capital-raising transaction, but who is not an Employee. 
  
 (q) “Director” means a member of the Board of Directors of the Company or an
Affiliate. 
  
 (r)
“Divestiture” means any transaction or event that the Board specifies as a Divestiture under Section 10.5. 
  
 (s) “Domestic Relations Order” means a “domestic relations order” as defined in, and otherwise meeting
the requirements of, Section 414(p) of the Code, except that reference to a “plan” in that definition shall be to this Plan. 
  
 (t) “Effective Date” means the first date of the sale by the Company of shares of its capital stock in an initial
public offering pursuant to a registration statement on Form S-1 filed with the SEC. 
  

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 (u) “Employee” means a regular employee of the Company or an
Affiliate, including an officer or Director, who is treated as an employee in the personnel records of the Company or an Affiliate, but not individuals who are classified by the Company or an Affiliate as: (i) leased from or otherwise employed by a
third party, (ii) independent contractors, or (iii) intermittent or temporary workers. The Company’s or an Affiliate’s classification of an individual as an “Employee” (or as not an “Employee”) for purposes of this Plan
shall not be altered retroactively even if that classification is changed retroactively for another purpose as a result of an audit, litigation or otherwise. An Awardee shall not cease to be an Employee due to transfers between locations of the
Company, or between the Company and an Affiliate, or to any successor to the Company or an Affiliate that assumes the Awardee’s Options under Section 10. Neither service as a Director nor receipt of a director’s fee shall be sufficient to
make a Director an “Employee.” 
  
 (v)
“Exchange Act” means the Securities Exchange Act of 1934. 
  
 (w) “Executive” means, if the Company has any class of any equity security registered under Section 12 of the
Exchange Act, an individual who is subject to Section 16 of the Exchange Act or who is a “covered employee” under Section 162(m) of the Code, in either case because of the individual’s relationship with the Company or an Affiliate. If
the Company does not have any class of any equity security registered under Section 12 of the Exchange Act, “Executive” means any (i) Director, (ii) officer elected or appointed by the Board, or (iii) beneficial owner of more than 10% of
any class of the Company’s equity securities. 
  
 (x) “Expiration Date” means, with respect to an Award, the date stated in the Award Agreement as the expiration date of the Award or, if no such date is stated in the Award Agreement, then the last day of the maximum
exercise period for the Award, disregarding the effect of an Awardee’s Termination or any other event that would shorten that period. 
  
 (y) “Fair Market Value” means the value of Shares as determined under Section 17.2. 
  
 (z) “Fundamental Transaction” means
any transaction or event described in Section 10.3. 
  
 (aa) “Good Reason” means (i) a material diminution in responsibility or compensation, or (ii) requiring Awardee to work in a location (other than normal business travel) which is more than 50 miles from
Awardee’s principal place of business before the change. 
  
 (bb) “Grant Date” means the date the Administrator approves the grant of an Award. However, if the Administrator specifies that an Award’s Grant Date is a 

  

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future date or the date on which a condition is satisfied, the Grant Date for such Award is that future date or the date that the condition is satisfied.

  
 (cc) “Incentive Stock
Option” means an Option intended to qualify as an incentive stock option under Section 422 of the Code and designated as an Incentive Stock Option in the Award Agreement for that Option. 
  
 (dd) “Involuntary Termination” means
termination by the Company without Cause or termination by the Awardee for Good Reason. 
  
 (ee) “Nonstatutory Option” means any Option other than an Incentive Stock Option. 
  
 (ff) “Objectively Determinable Performance
Condition” shall mean a performance condition (i) that is established (A) at the time an Award is granted or (B) no later than the earlier of (1) 90 days after the beginning of the period of service to which it relates, or (2) before
the elapse of 25% of the period of service to which it relates, (ii) that is uncertain of achievement at the time it is established, and (iii) the achievement of which is determinable by a third party with knowledge of the relevant facts. Examples
of measures that may be used in Objectively Determinable Performance Conditions include net order dollars, net profit dollars, net profit growth, net revenue dollars, revenue growth, individual performance, earnings per share, return on assets,
return on equity, and other financial objectives, objective customer satisfaction indicators and efficiency measures, each with respect to the Company and/or an Affiliate or individual business unit. 
  
 (gg) “Officer” means an officer of
the Company as defined in Rule 16a-1 adopted under the Exchange Act. 
  
 (hh) “Option” means a right to purchase Shares of the Company granted under this Plan. 
  
 (ii) “Option Price” means the price payable under an Option for Shares, not including any amount payable in
respect of withholding or other taxes. 
  
 (jj)
“Option Shares” means Shares covered by an outstanding Option or purchased under an Option. 
  
 (kk) “Plan” means this 2004 Equity Incentive Plan of Threshold Pharmaceuticals, Inc. 
  
 (ll) “Prior Plan” means the
Company’s 2001 Equity Incentive Plan. 
  
 (mm) “Purchase Price” means the price payable under a Stock Award for Shares, not including any amount payable in respect of withholding or other taxes. 
  

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 (nn) “Rule 16b-3” means Rule 16b-3 adopted under Section 16(b) of
the Exchange Act. 
  
 (oo)
“SAR” or “Stock Appreciation Right” means a right to receive cash and/or Shares based on a change in the Fair Market Value of a specific number of Shares pursuant to an Award Agreement, as described in
Section 8.1. 
  
 (pp) “Securities
Act” means the Securities Act of 1933. 
  
 (qq) “Share” means a share of the common stock of the Company or other securities substituted for the common stock under Section 10. 
  
 (rr) “Stock Award” means an offer by the Company to sell shares subject to certain
restrictions pursuant to the Award Agreement as described in Section 8.2 or, as determined by the Committee, a notional account representing the right to be paid an amount based on Shares. 
  
 (ss) “Substitute Award” means a
Substitute Option, Substitute SAR or Substitute Stock Award granted in accordance with the terms of this Plan. 
  
 (tt) “Substitute Option” means an Option granted in substitution for, or upon the conversion of, an option granted
by another entity to purchase equity securities in the granting entity. 
  
 (uu) “Substitute SAR” means a SAR granted in substitution for, or upon the conversion of, a stock appreciation right granted by another entity with respect to equity securities in the granting
entity. 
  
 (vv) “Substitute Stock
Award” means a Stock Award granted in substitution for, or upon the conversion of, a stock award granted by another entity to purchase equity securities in the granting entity. 
  
 (ww) “Termination” means that the
Awardee has ceased to be, with or without any cause or reason, an Employee, Director or Consultant. However, unless so determined by the Administrator, or otherwise provided in this Plan, “Termination” shall not include a change in status
from an Employee, Consultant or Director to another such status. An event that causes an Affiliate to cease being an Affiliate shall be treated as the “Termination” of that Affiliate’s Employees, Directors, and Consultants.

  
 2.2 Rules of Interpretation. Any reference to a
“Section,” without more, is to a Section of this Plan. Captions and titles are used for convenience in this Plan and shall not, by themselves, determine the meaning of this Plan. Except when otherwise indicated by the context, the singular
includes the plural and vice versa. Any reference to a statute 

  

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is also a reference to the applicable rules and regulations adopted under that statute. Any reference to a statute, rule or regulation, or to a section of a
statute, rule or regulation, is a reference to that statute, rule, regulation, or section as amended from time to time, both before and after the Effective Date and including any successor provisions. 
  

	3.	Shares Subject to this Plan; Term of this Plan 

  
 3.1 Number of Award Shares. The Shares issuable under this Plan shall be authorized but unissued or reacquired Shares, including Shares repurchased
by the Company on the open market. The number of Shares initially reserved for issuance over the term of this Plan shall be 4,000,000. Except as required by Applicable Law, Shares shall not reduce the number of Shares reserved for issuance under
this Plan until the earlier of the date such Shares are vested pursuant to the terms of the applicable Award or the actual date of delivery of the Shares to the Awardee. Notwithstanding the foregoing, the maximum number of Shares shall be increased
by (i) the number of shares available for issuance, as of the Effective Date, under the Prior Plan as last approved by the Company’s stockholders, including the Shares subject to outstanding awards under the Prior Plan, plus (ii) those Shares
issued under the Plan or Prior Plan that are forfeited or repurchased by the Company at the original purchase price or less or that are issuable upon exercise of awards granted under the Plan or Prior Plan that expire or become unexercisable for any
reason after the Effective Date, plus (iii) those Shares that are Restored pursuant to the decision of the Board or Committee pursuant to Section 6.4(a) to deliver only such Shares as are necessary to award the net Share appreciation. The repurchase
of Shares by the Company shall not increase the maximum number of Shares that may be issued under this Plan to the extent the Company repurchases Shares that were originally exercised or purchased with other previously owned Shares. The maximum
number of Shares shall be cumulatively increased on the first January 1 after the Effective Date and each January 1 thereafter for 9 more years, by a number of Shares equal to the lesser of (a) 5% of the number of Shares issued and outstanding on
the immediately preceding December 31, (b) 2,000,000 Shares, and (c) a number of Shares set by the Board. 
  
 3.2 Source of Shares. Award Shares may be: (a) Shares that have never been issued, (b) Shares that have been issued but are no longer
outstanding, or (c) Shares that are outstanding and are acquired to discharge the Company’s obligation to deliver Award Shares. 
  
 3.3 Term of this Plan 
  
 (a) This Plan shall be effective on, and Awards may be granted under this Plan on and after, the earliest the date on which the Plan has
been both adopted by the Board and approved by the Company’s stockholders. 
  

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 (b) Subject to the provisions of Section 13, Awards may be granted under this Plan for a
period of ten years from the earlier of the date on which the Board approves this Plan and the date the Company’s stockholders approve this Plan. Accordingly, Awards may not be granted under this Plan after the earlier of those dates.

  

	4.	Administration 

  
 4.1 General 
  
 (a) The Board shall have ultimate responsibility for administering this Plan. The Board may delegate certain of its responsibilities to a
Committee, which shall consist of at least two members of the Board. The Board or the Committee may further delegate its responsibilities to any Employee of the Company or any Affiliate. Where this Plan specifies that an action is to be taken or a
determination made by the Board, only the Board may take that action or make that determination. Where this Plan specifies that an action is to be taken or a determination made by the Committee, only the Committee may take that action or make that
determination. Where this Plan references the “Administrator,” the action may be taken or determination made by the Board, the Committee, or other Administrator. However, only the Board or the Committee may approve grants of Awards to
Executives, and an Administrator other than the Board or the Committee may grant Awards only within the guidelines established by the Board or Committee. Moreover, all actions and determinations by any Administrator are subject to the provisions of
this Plan. 
  
 (b) So long as the Company has
registered and outstanding a class of equity securities under Section 12 of the Exchange Act, the Committee shall consist of Company Directors who are “Non-Employee Directors” as defined in Rule 16b-3 and, after the expiration of any
transition period permitted by Treasury Regulations Section 1.162-27(h)(3), who are “outside directors” as defined in Section 162(m) of the Code. 
  
 4.2 Authority of the Board or the Committee. Subject to the other provisions of this Plan, the Board or the Committee shall have the authority to:

  
 (a) grant Awards, including Substitute
Awards; 
  
 (b) determine the Fair Market Value
of Shares; 
  
 (c) determine the Option Price and
the Purchase Price of Awards; 
  
 (d) select the
Awardees; 
  
 (e) determine the times Awards are
granted; 
  
 (f) determine the number of Shares
subject to each Award; 
  

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 (g) determine the methods of payment that may be used to purchase Award Shares;

  
 (h) determine the methods of payment that may
be used to satisfy withholding tax obligations; 
  
 (i) determine the other terms of each Award, including but not limited to the time or times at which Awards may be exercised, whether and under what conditions an Award is assignable, and whether an Option is a Nonstatutory Option or an
Incentive Stock Option; 
  
 (j) modify or amend
any Award; 
  
 (k) authorize any person to sign
any Award Agreement or other document related to this Plan on behalf of the Company; 
  
 (l) determine the form of any Award Agreement or other document related to this Plan, and whether that document, including signatures, may
be in electronic form; 
  
 (m) interpret this
Plan and any Award Agreement or document related to this Plan; 
  
 (n) correct any defect, remedy any omission, or reconcile any inconsistency in this Plan, any Award Agreement or any other document related to this Plan; 
  
 (o) adopt, amend, and revoke rules and regulations under this Plan, including rules and regulations relating
to sub-plans and Plan addenda; 
  
 (p) adopt,
amend, and revoke special rules and procedures which may be inconsistent with the terms of this Plan, set forth (if the Administrator so chooses) in sub-plans regarding (for example) the operation and administration of this Plan and the terms of
Awards, if and to the extent necessary or useful to accommodate non-U.S. Applicable Laws and practices as they apply to Awards and Award Shares held by, or granted or issued to, persons working or resident outside of the United States or employed by
Affiliates incorporated outside the United States; 
  
 (q) determine whether a transaction or event should be treated as a Change in Control, a Divestiture or neither; 
  
 (r) determine the effect of a Fundamental Transaction and, if the Board determines that a transaction or event should be treated as a
Change in Control or a Divestiture, then the effect of that Change in Control or Divestiture; and 
  
 (s) make all other determinations the Administrator deems necessary or advisable for the administration of this Plan. 
  

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 4.3 Scope of Discretion. Subject to the provisions of this Section 4.3, on all matters for
which this Plan confers the authority, right or power on the Board, the Committee, or other Administrator to make decisions, that body may make those decisions in its sole and absolute discretion. Those decisions will be final, binding and
conclusive. In making its decisions, the Board, Committee or other Administrator need not treat all persons eligible to receive Awards, all Awardees, all Awards or all Award Shares the same way. Notwithstanding anything herein to the contrary, and
except as provided in Section 13.3, the discretion of the Board, Committee or other Administrator is subject to the specific provisions and specific limitations of this Plan, as well as all rights conferred on specific Awardees by Award Agreements
and other agreements. 
  

	5.	Persons Eligible to Receive Awards 

  
 5.1 Eligible Individuals. Awards (including Substitute Awards) may be granted to, and only to, Employees, Directors and Consultants,
including to prospective Employees, Directors and Consultants conditioned on the beginning of their service for the Company or an Affiliate. However, Incentive Stock Options may only be granted to Employees, as provided in Section 7(g). 

 
 5.2 Section 162(m) Limitation. 
  
 (a) Options and SARs. Subject to the provisions of
this Section 5.2, for so long as the Company is a “publicly held corporation” within the meaning of Section 162(m) of the Code: (i) no Employee may be granted one or more SARs and Options within any fiscal year of the Company under this
Plan to purchase more than 2,000,000 Shares under Options or to receive compensation calculated with reference to more than that number of Shares under SARs, subject to adjustment pursuant to Section 10, (ii) Options and SARs may be granted to an
Executive only by the Committee (and, notwithstanding anything to the contrary in Section 4.1(a), not by the Board). If an Option or SAR is cancelled without being exercised or of the Option Price of an Option is reduced, that cancelled or repriced
Option or SAR shall continue to be counted against the limit on Awards that my be granted to any individual under this Section 5.2. Notwithstanding anything herein to the contrary, a new Employee of the Company or an Affiliate shall be eligible to
receive up to a maximum of 3,000,000 Shares under Options in the calendar year which they commence employment, or such compensation calculated with reference to such number of Shares under SARs, subject to adjustment pursuant to Section 10.

  
 (b) Cash Awards and Stock Awards. Any
Cash Award or Stock Award intended as “qualified performance-based compensation” within the meaning of Section 162(m) of the Code must vest or become exercisable contingent on the achievement of one or more Objectively Determinable
Performance Conditions. The Committee shall have the discretion to determine the time and manner of compliance with Section 162(m) of the Code. 
  

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	6.	Terms and Conditions of Options 

  
 The following rules apply to all Options: 
  
 6.1 Price. Except as specifically provided herein, no nonstatutory Option may have an Option Price less than 85% of the Fair Market Value of
the Shares on the Grant Date. No Option intended as “qualified incentive-based compensation” within the meaning of Section 162(m) of the Code may have an Option Price less than 100% of the Fair Market Value of the Shares on the Grant Date.
In no event will the Option Price of any Option be less than the par value of the Shares issuable under the Option if that is required by Applicable Law. The Option Price of an Incentive Stock Option shall be subject to Section 7(f). 
  
 6.2 Term. No Option shall be exercisable after its Expiration
Date. No Option may have an Expiration Date that is more than ten years after its Grant Date. Additional provisions regarding the term of Incentive Stock Options are provided in Sections 7(a) and 7(e). 
  
 6.3 Vesting. Options shall be exercisable: (a) on the Grant
Date, or (b) in accordance with a schedule related to the Grant Date, the date the Optionee’s directorship, employment or consultancy begins, or a different date specified in the Option Agreement. Additional provisions regarding the vesting of
Incentive Stock Options are provided in Section 7(c). No Option granted to an individual who is subject to the overtime pay provisions of the Fair Labor Standards Act may be exercised before the expiration of six months after the Grant Date.

  
 6.4 Form and Method of Payment. 
  
 (a) The Board or Committee shall determine the acceptable
form and method of payment for exercising an Option. So long as variable accounting pursuant to “APB 25” does not apply and the Board or Committee otherwise determines there is no material adverse accounting consequence at the time of
exercise, the Board or Committee may require the delivery in Shares for the value of the net appreciation of the Shares at the time of exercise over the exercise price. The difference between full number of Shares covered by the exercised portion of
the Award and the number of Shares actually delivered shall be restored to the amount of Shares reserved for issuance under Section 3.1. 
  
 (b) Acceptable forms of payment for all Option Shares are cash, check or wire transfer, denominated in U.S. dollars except as specified by
the Administrator for non-U.S. Employees or non-U.S. sub-plans. 
  

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 (c) In addition, the Administrator may permit payment to be made by any of the following
methods: 
  
 (i) other Shares, or the designation
of other Shares, which (A) are “mature” shares for purposes of avoiding variable accounting treatment under generally accepted accounting principles (generally mature shares are those that have been owned by the Optionee for more than six
months on the date of surrender), and (B) have a Fair Market Value on the date of surrender equal to the Option Price of the Shares as to which the Option is being exercised; 
  
 (ii) provided that a public market exists for the Shares, consideration received by the Company under a
procedure under which a licensed broker-dealer advances funds on behalf of an Optionee or sells Option Shares on behalf of an Optionee (a “Cashless Exercise Procedure”), provided that if the Company extends or arranges for
the extension of credit to an Optionee under any Cashless Exercise Procedure, no Officer or Director may participate in that Cashless Exercise Procedure; 
  
 (iii) cancellation of any debt owed by the Company or any Affiliate to the Optionee by the Company including without limitation waiver of
compensation due or accrued for services previously rendered to the Company; and 
  
 (iv) any combination of the methods of payment permitted by any paragraph of this Section 6.4. 
  
 (d) The Administrator may also permit any other form or
method of payment for Option Shares permitted by Applicable Law. 
  
 6.5 Nonassignability of Options. Except as determined by the Administrator, no Option shall be assignable or otherwise transferable by the Optionee except by will or by the laws of descent and distribution. However, Options
may be transferred and exercised in accordance with a Domestic Relations Order and may be exercised by a guardian or conservator appointed to act for the Optionee. Incentive Stock Options may only be assigned in compliance with Section 7(h).

  
 6.6 Substitute Options. The Board may cause the Company
to grant Substitute Options in connection with the acquisition by the Company or an Affiliate of equity securities of any entity (including by merger, tender offer, or other similar transaction) or of all or a portion of the assets of any entity.
Any such substitution shall be effective on the effective date of the acquisition. Substitute Options may be Nonstatutory Options or Incentive Stock Options. Unless and to the extent specified otherwise by the Board, Substitute Options shall have
the same terms and conditions as the options they replace, except that (subject to the provisions of Section 10) Substitute Options shall be Options to purchase Shares rather than equity securities of the granting entity and shall have an Option
Price determined by the Board. 
  
 6.7 Repricings.
Options may be repriced, replaced or regranted through cancellation or modification. 
  

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	7.	Incentive Stock Options. 

  
 The following rules apply only to Incentive Stock Options and only to the extent these rules are more restrictive than the rules that would otherwise
apply under this Plan. With the consent of the Optionee, or where this Plan provides that an action may be taken notwithstanding any other provision of this Plan, the Administrator may deviate from the requirements of this Section, notwithstanding
that any Incentive Stock Option modified by the Administrator will thereafter be treated as a Nonstatutory Option. 
  
 (a) The Expiration Date of an Incentive Stock Option shall not be later than ten years from its Grant Date, with the result that no
Incentive Stock Option may be exercised after the expiration of ten years from its Grant Date. 
  
 (b) No Incentive Stock Option may be granted more than ten years from the date this Plan was approved by the Board. 
  
 (c) Options intended to be incentive stock options under
Section 422 of the Code that are granted to any single Optionee under all incentive stock option plans of the Company and its Affiliates, including incentive stock options granted under this Plan, may not vest at a rate of more than $100,000 in Fair
Market Value of stock (measured on the grant dates of the options) during any calendar year. For this purpose, an option vests with respect to a given share of stock the first time its holder may purchase that share, notwithstanding any right of the
Company to repurchase that share. Unless the administrator of that option plan specifies otherwise in the related agreement governing the option, this vesting limitation shall be applied by, to the extent necessary to satisfy this $ 100,000 rule,
treating certain stock options that were intended to be incentive stock options under Section 422 of the Code as Nonstatutory Options. The stock options or portions of stock options to be reclassified as Nonstatutory Options are those with the
highest option prices, whether granted under this Plan or any other equity compensation plan of the Company or any Affiliate that permits that treatment. This Section 7(c) shall not cause an Incentive Stock Option to vest before its original vesting
date or cause an Incentive Stock Option that has already vested to cease to be vested. 
  
 (d) In order for an Incentive Stock Option to be exercised for any form of payment other than those described in Section 6.4(b), that
right must be stated at the time of grant in the Option Agreement relating to that Incentive Stock Option. 
  
 (e) Any Incentive Stock Option granted to a Ten Percent Stockholder, must have an Expiration Date that is not later than five years from
its Grant Date, with the result that no such Option may be exercised after the expiration of five years from the Grant Date. A “Ten Percent Stockholder” is any person who, directly or by attribution under Section 424(d) of
the Code, owns stock possessing more than ten percent of the total combined voting power of all classes of stock of the Company or of any Affiliate on the Grant Date. 
  

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 (f) The Option Price of an Incentive Stock Option shall never be less than the Fair
Market Value of the Shares at the Grant Date. The Option Price for the Shares covered by an Incentive Stock Option granted to a Ten Percent Stockholder shall never be less than 110% of the Fair Market Value of the Shares at the Grant Date.

  
 (g) Incentive Stock Options may be granted
only to Employees. If an Optionee changes status from an Employee to a Consultant, that Optionee’s Incentive Stock Options become Nonstatutory Options if not exercised within the time period described in Section 7(i) (determined by treating
that change in status as a Termination solely for purposes of this Section 7(g)). 
  
 (h) No rights under an Incentive Stock Option may be transferred by the Optionee, other than by will or the laws of descent and
distribution. During the life of the Optionee, an Incentive Stock Option may be exercised only by the Optionee. The Company’s compliance with a Domestic Relations Order, or the exercise of an Incentive Stock Option by a guardian or conservator
appointed to act for the Optionee, shall not violate this Section 7(h). 
  
 (i) An Incentive Stock Option shall be treated as a Nonstatutory Option if it remains exercisable after, and is not exercised within, the three-month period beginning with the Optionee’s Termination for any
reason other than the Optionee’s death or disability (as defined in Section 22(e) of the Code). In the case of Termination due to death, an Incentive Stock Option shall continue to be treated as an Incentive Stock Option if it remains
exercisable after, and is not exercised within, the three-month period after the Optionee’s Termination provided it is exercised before the Expiration Date. In the case of Termination due to disability, an Incentive Stock Option shall be
treated as a Nonstatutory Option if it remains exercisable after, and is not exercised within, one year after the Optionee’s Termination. 
  
 (j) An Incentive Stock Option may only be modified by the Board. 
  

	8.	Stock Appreciation Rights, Stock Awards and Cash Awards 

  
 8.1 Stock Appreciation Rights. The following rules apply to SARs: 
  
 (a) General. SARs may be granted either alone, in addition to, or in tandem with other Awards
granted under this Plan. The Administrator may grant SARs to eligible participants subject to terms and conditions not inconsistent with this Plan and determined by the Administrator. The specific terms and conditions applicable to the Awardee shall
be provided for in the Award Agreement. SARs shall be exercisable, in whole or in part, at such times as the Administrator shall specify in the Award Agreement. The grant or vesting of a SAR may be made contingent on the achievement of Objectively
Determinable Performance Conditions. 
  

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 (b) Exercise of SARs. Upon the exercise of an SAR, in whole or in part, an
Awardee shall be entitled to a payment in an amount equal to the excess of the Fair Market Value of a fixed number of Shares covered by the exercised portion of the SAR on the date of exercise, over the Fair Market Value of the Shares covered by the
exercised portion of the SAR on the Grant Date. The amount due to the Awardee upon the exercise of a SAR shall be paid in cash, Shares or a combination thereof, over the period or periods specified in the Award Agreement. An Award Agreement may
place limits on the amount that may be paid over any specified period or periods upon the exercise of a SAR, on an aggregate basis or as to any Awardee. A SAR shall be considered exercised when the Company receives written notice of exercise in
accordance with the terms of the Award Agreement from the person entitled to exercise the SAR. If a SAR has been granted in tandem with an Option, upon the exercise of the SAR, the number of shares that may be purchased pursuant to the Option shall
be reduced by the number of shares with respect to which the SAR is exercised. 
  
 (c) Nonassignability of SARs. Except as determined by the Administrator, no SAR shall be assignable or otherwise
transferable by the Awardee except by will or by the laws of descent and distribution. Notwithstanding anything herein to the contrary, SARs may be transferred and exercised in accordance with a Domestic Relations Order. 
  
 (d) Substitute SARs. The Board may cause the
Company to grant Substitute SARs in connection with the acquisition by the Company or an Affiliate of equity securities of any entity (including by merger) or all or a portion of the assets of any entity. Any such substitution shall be effective on
the effective date of the acquisition. Unless and to the extent specified otherwise by the Board, Substitute SARs shall have the same terms and conditions as the options they replace, except that (subject to the provisions of Section 9) Substitute
SARs shall be exercisable with respect to the Fair Market Value of Shares rather than equity securities of the granting entity and shall be on terms that, as determined by the Board in its sole and absolute discretion, properly reflects the
substitution. 
  
 (e) Repricings. A
SAR may be repriced, replaced or regranted, through cancellation or modification. 
  
 8.2 Stock Awards. The following rules apply to all Stock Awards: 
  
 (a) General. The specific terms and conditions of a Stock Award applicable to the Awardee shall be provided for in the Award
Agreement. The Award Agreement shall state the number of Shares that the Awardee shall be entitled to receive or purchase, the terms and conditions on which the Shares shall vest, the price to be paid, whether Shares are to be delivered at the time
of grant or at some deferred date specified in the Award Agreement, whether the Award is payable solely in Shares, cash or either and, if applicable, the time within which the Awardee must accept such offer. The offer shall be accepted by execution
of the Award Agreement. The Administrator may require 

  

 14 

 
that all Shares subject to a right of repurchase or risk of forfeiture be held in escrow until such repurchase right or risk of forfeiture lapses. The grant
or vesting of a Stock Award may be made contingent on the achievement of Objectively Determinable Performance Conditions. 
  
 (b) Right of Repurchase. If so provided in the Award Agreement, Award Shares acquired pursuant to a Stock Award may be
subject to repurchase by the Company or an Affiliate if not vested in accordance with the Award Agreement. 
  
 (c) Form of Payment. The Administrator shall determine the acceptable form and method of payment for exercising a Stock
Award. Acceptable forms of payment for all Award Shares are cash, check or wire transfer, denominated in U.S. dollars except as specified by the Administrator for non-U.S. sub-plans. In addition, the Administrator may permit payment to be made by
any of the methods permitted with respect to the exercise of Options pursuant to Section 6.4. 
  
 (d) Nonassignability of Stock Awards. Except as determined by the Administrator, no Stock Award shall be assignable or
otherwise transferable by the Awardee except by will or by the laws of descent and distribution. Notwithstanding anything to the contrary herein, Stock Awards may be transferred and exercised in accordance with a Domestic Relations Order.

  
 (e) Substitute Stock Award. The
Board may cause the Company to grant Substitute Stock Awards in connection with the acquisition by the Company or an Affiliate of equity securities of any entity (including by merger) or all or a portion of the assets of any entity. Unless and to
the extent specified otherwise by the Board, Substitute Stock Awards shall have the same terms and conditions as the stock awards they replace, except that (subject to the provisions of Section 10) Substitute Stock Awards shall be Stock Awards to
purchase Shares rather than equity securities of the granting entity and shall have a Purchase Price that, as determined by the Board in its sole and absolute discretion, properly reflects the substitution. Any such Substituted Stock Award shall be
effective on the effective date of the acquisition. 
  
 8.3
Cash Awards. The following rules apply to all Cash Awards: 
  
 Cash Awards may be granted either alone, in addition to, or in tandem with other Awards granted under this Plan. After the Administrator determines that it will offer a Cash Award, it shall advise the Awardee, by
means of an Award Agreement, of the terms, conditions and restrictions related to the Cash Award. 
  

	9.	Exercise of Awards 

  
 9.1 In General. An Award shall be exercisable in accordance with this Plan and the Award Agreement under which it is granted. 
  

 15 

 9.2 Time of Exercise. Options and Stock Awards shall be considered exercised when the Company
receives: (a) written notice of exercise from the person entitled to exercise the Option or Stock Award, (b) full payment, or provision for payment, in a form and method approved by the Administrator, for the Shares for which the Option or Stock
Award is being exercised, and (c) with respect to Nonstatutory Options, payment, or provision for payment, in a form approved by the Administrator, of all applicable withholding taxes due upon exercise. An Award may not be exercised for a fraction
of a Share. SARs shall be considered exercised when the Company receives written notice of the exercise from the person entitled to exercise the SAR. 
  
 9.3 Issuance of Award Shares. The Company shall issue Award Shares in the name of the person properly exercising the Award. If the Awardee is that
person and so requests, the Award Shares shall be issued in the name of the Awardee and the Awardee’s spouse. The Company shall endeavor to issue Award Shares promptly after an Award is exercised or after the Grant Date of a Stock Award, as
applicable. Until Award Shares are actually issued, as evidenced by the appropriate entry on the stock register of the Company or its transfer agent, the Awardee will not have the rights of a stockholder with respect to those Award Shares, even
though the Awardee has completed all the steps necessary to exercise the Award. No adjustment shall be made for any dividend, distribution, or other right for which the record date precedes the date the Award Shares are issued, except as provided in
Section 10. 
  
 9.4 Termination 
  
 (a) In General. Except as provided in an Award
Agreement or in writing by the Administrator, including in an Award Agreement, and as otherwise provided in Sections 9.4(b), (c), (d) and (e) after an Awardee’s Termination for other than Cause, the Awardee’s Awards shall be exercisable to
the extent (but only to the extent) they are vested on the date of that Termination and only during the three months after the Termination, but in no event after the Expiration Date. Unless otherwise provided in the Award Agreement, in the event of
termination for Cause the Award may not be exercised after the date of Termination. To the extent the Awardee does not exercise an Award within the time specified for exercise, the Award shall automatically terminate. 
  
 (b) Leaves of Absence. Unless otherwise
provided in the Award Agreement, no Award may be exercised more than three months after the beginning of a leave of absence, other than a personal or medical leave approved by an authorized representative of the Company with employment guaranteed
upon return. Awards shall not continue to vest during a leave of absence, unless otherwise determined by the Administrator with respect to an approved personal or medical leave with employment guaranteed upon return. 
  
 (c) Death or Disability. Unless otherwise
provided by the Administrator, if an Awardee’s Termination is due to death or disability (as determined by the 

  

 16 

 
Administrator with respect to all Awards other than Incentive Stock Options and as defined by Section 22(e) of the Code with respect to Incentive Stock
Options), all Awards of that Awardee to the extent exercisable at the date of that Termination may be exercised for one year after that Termination, but in no event after the Expiration Date. In the case of Termination due to death, an Award may be
exercised as provided in Section 16. In the case of Termination due to disability, if a guardian or conservator has been appointed to act for the Awardee and been granted this authority as part of that appointment, that guardian or conservator may
exercise the Award on behalf of the Awardee. Death or disability occurring after an Awardee’s Termination shall not cause the Termination to be treated as having occurred due to death or disability. To the extent an Award is not so exercised
within the time specified for its exercise, the Award shall automatically terminate. 
  
 (d) Divestiture. If an Awardee’s Termination is due to a Divestiture, the Board may take any one or more of the actions
described in Section 10.3 or 10.4 with respect to the Awardee’s Awards. 
  
 (e) Administrator Discretion. Notwithstanding the provisions of Section 9.4 (a)-(e), the Plan Administrator shall have complete discretion, exercisable either at the time an Award is granted or at any
time while the Award remains outstanding, to: 
  
 (i) Extend the period of time for which the Award is to remain exercisable, following the Awardee’s Termination, from the limited exercise period otherwise in effect for that Award to such greater period of time as the Administrator
shall deem appropriate, but in no event beyond the Expiration Date; and/or 
  
 (ii) Permit the Award to be exercised, during the applicable post-Termination exercise period, not only with respect to the number of vested Shares for which such Award may be exercisable at the time of the
Awardee’s Termination but also with respect to one or more additional installments in which the Awardee would have vested had the Awardee not been subject to Termination. 
  
 (f) Consulting or Employment Relationship. Nothing in this Plan or in any Award Agreement, and
no Award or the fact that Award Shares remain subject to repurchase rights, shall: (A) interfere with or limit the right of the Company or any Affiliate to terminate the employment or consultancy of any Awardee at any time, whether with or without
cause or reason, and with or without the payment of severance or any other compensation or payment, or (B) interfere with the application of any provision in any of the Company’s or any Affiliate’s charter documents or Applicable Law
relating to the election, appointment, term of office, or removal of a Director. 
  

 17 

	10.	Certain Transactions and Events 

  
 10.1 In General. Except as provided in this Section 10, no change in the capital structure of the Company, merger, sale or other disposition of
assets or a subsidiary, change in control, issuance by the Company of shares of any class of securities or securities convertible into shares of any class of securities, exchange or conversion of securities, or other transaction or event shall
require or be the occasion for any adjustments of the type described in this Section 10. Additional provisions with respect to the foregoing transactions are set forth in Section 13.3. 
  
 10.2 Changes in Capital Structure. In the event of any stock split, reverse stock split, recapitalization,
combination or reclassification of stock, stock dividend, spin-off, or similar change to the capital structure of the Company (not including a Fundamental Transaction or Change in Control), the Board shall make whatever adjustments it concludes are
appropriate to: (a) the number and type of Awards that may be granted under this Plan, (b) the number and type of Options that may be granted to any individual under this Plan, (c) the terms of any SAR, (d) the Purchase Price of any Stock Award, (e)
the Option Price and number and class of securities issuable under each outstanding Option, and (f) the repurchase price of any securities substituted for Award Shares that are subject to repurchase rights. The specific adjustments shall be
determined by the Board. Unless the Board specifies otherwise, any securities issuable as a result of any such adjustment shall be rounded down to the next lower whole security. The Board need not adopt the same rules for each Award or each Awardee.

  
 10.3 Fundamental Transactions. In the event of (a) a
merger or consolidation in which the Company is not the surviving corporation (other than a merger or consolidation with a wholly-owned subsidiary, a reincorporation of the Company in a different jurisdiction, or other transaction in which there is
no substantial change in the stockholders of the Company or their relative stock holdings and the Awards granted under this Plan are assumed, converted or replaced by the successor corporation, which assumption shall be binding on all Participants),
(b) a merger in which the Company is the surviving corporation but after which the stockholders of the Company immediately prior to such merger (other than any stockholder that merges, or which owns or controls another corporation that merges, with
the Company in such merger) cease to own their shares or other equity interest in the Company, (c) the sale of all or substantially all of the assets of the Company, or (d) the acquisition, sale, or transfer of more than 50% of the outstanding
shares of the Company by tender offer or similar transaction (each, a “Fundamental Transaction”), any or all outstanding Awards may be assumed, converted or replaced by the successor corporation (if any), which assumption,
conversion or replacement shall be binding on all participants under this Plan. In the alternative, the successor corporation may substitute equivalent Awards or provide substantially similar consideration to participants as was provided to
stockholders (after taking into account the existing provisions of the Awards). The successor corporation may also issue, in 

  

 18 

 
place of outstanding Shares held by the participants, substantially similar shares or other property subject to repurchase restrictions no less favorable to
the participant. In the event such successor corporation (if any) does not assume or substitute Awards, as provided above, pursuant to a transaction described in this Subsection 10.3, the vesting with respect to such Awards shall fully and
immediately accelerate or the repurchase rights of the Company shall fully and immediately terminate, as the case may be, so that the Awards may be exercised or the repurchase rights shall terminate before, or otherwise in connection with the
closing or completion of the Fundamental Transaction or event, but then terminate. Notwithstanding anything in this Plan to the contrary, the Committee may, in its sole discretion, provide that the vesting of any or all Award Shares subject to
vesting or right of repurchase shall accelerate or lapse, as the case may be, upon a transaction described in this Section 10.3. If the Committee exercises such discretion with respect to Options, such Options shall become exercisable in full prior
to the consummation of such event at such time and on such conditions as the Committee determines, and if such Options are not exercised prior to the consummation of the Fundamental Transaction, they shall terminate at such time as determined by the
Committee. Subject to any greater rights granted to participants under the foregoing provisions of this Section 10.3, in the event of the occurrence of any Fundamental Transaction, any outstanding Awards shall be treated as provided in the
applicable agreement or plan of merger, consolidation, dissolution, liquidation, or sale of assets. 
  
 10.4 Changes of Control. The Board may also, but need not, specify that other transactions or events constitute a “Change in
Control”. The Board may do that either before or after the transaction or event occurs. Examples of transactions or events that the Board may treat as Changes of Control are: (a) any person or entity, including a “group” as
contemplated by Section 13(d)(3) of the Exchange Act, acquires securities holding 30% or more of the total combined voting power or value of the Company, or (b) as a result of or in connection with a contested election of Company Directors, the
persons who were Company Directors immediately before the election cease to constitute a majority of the Board. In connection with a Change in Control, notwithstanding any other provision of this Plan, the Board may, but need not, take any one or
more of the actions described in Section 10.3. In addition, the Board may extend the date for the exercise of Awards (but not beyond their original Expiration Date). The Board need not adopt the same rules for each Award or each Awardee.
Notwithstanding anything in this Plan to the contrary, in the event of an Involuntary Termination of services for any reason other than death, disability or Cause, within 18 months following the consummation of a Fundamental Transaction or Change in
Control, any Awards, assumed or substituted in a Fundamental Transaction or Change in Control, which are subject to vesting conditions and/or the right of repurchase in favor of the Company or a successor entity, shall accelerate for 12 months of
vesting so that such Award Shares are immediately exercisable upon Termination or, if subject to the right of repurchase in favor of the Company, such repurchase rights shall lapse as of the date of Termination. Such Awards shall be exercisable for
a period of three (3) months following termination. 
  

 19 

 10.5 Divestiture. If the Company or an Affiliate sells or otherwise transfers equity securities of
an Affiliate to a person or entity other than the Company or an Affiliate, or leases, exchanges or transfers all or any portion of its assets to such a person or entity, then the Board may specify that such transaction or event constitutes a
“Divestiture”. In connection with a Divestiture, notwithstanding any other provision of this Plan, the Board may, but need not, take one or more of the actions described in Section 10.3 or 10.4 with respect to Awards of Award
Shares held by, for example, Employees, Directors or Consultants for whom that transaction or event results in a Termination. The Board need not adopt the same rules for each Award or Awardee. 
  
 10.6 Dissolution. If the Company adopts a plan of dissolution, the
Board may cause Awards to be fully vested and exercisable (but not after their Expiration Date) before the dissolution is completed but contingent on its completion and may cause the Company’s repurchase rights on Award Shares to lapse upon
completion of the dissolution. The Board need not adopt the same rules for each Award or each Awardee. Notwithstanding anything herein to the contrary, in the event of a dissolution of the Company, to the extent not exercised before the earlier of
the completion of the dissolution or their Expiration Date, Awards shall terminate immediately prior to the dissolution. 
  
 10.7 Cut-Back to Preserve Benefits. If the Administrator determines that the net after-tax amount to be realized by any Awardee, taking into
account any accelerated vesting, termination of repurchase rights, or cash payments to that Awardee in connection with any transaction or event set forth in this Section 10 would be greater if one or more of those steps were not taken or payments
were not made with respect to that Awardee’s Awards or Award Shares, then, at the election of the Awardee, to such extent, one or more of those steps shall not be taken and payments shall not be made. 
  

	11.	Automatic Option Grants to Non-Employee Directors and Non-Employee Director Fee Option Grants 

  
 11.1 Automatic Option Grants to Non-Employee Directors. 
  
 (a) Grant Dates. Option grants to Non-Employee
Directors shall be made on the dates specified below: 
  
 (i) Each Non-Employee Director who is first elected or appointed to the Board at any time after the effective date of this Plan shall automatically be granted, on the date of such initial election or appointment, an Option to purchase
30,000 Shares (the “Initial Grant”). 
  
 (ii) Commencing in 2005, on the date of each annual stockholders meeting, each individual who is to continue to serve as a Non-Employee Director shall automatically be granted an Option to purchase 10,000 Shares (the “Annual 

  

 20 

 
Grant”), provided, however, that such individual has served as a Non-Employee Director for at least six (6) months. 
  
 (b) Exercise Price. 
  
 (i) The Option Price shall be equal to one hundred percent
(100%) of the Fair Market Value of the Shares on the Option grant date. 
  
 (ii) The Option Price shall be payable in one or more of the alternative forms authorized pursuant to Section 6.4. Except to the extent the sale and remittance procedure specified thereunder is utilized, payment of
the Option Price must be made on the date of exercise. 
  
 (c) Option Term. Each Option shall have a term of ten (10) years measured from the Option grant date. 
  
 (d) Exercise and Vesting of Options. Except as otherwise determined by the whole Board, the Shares underlying each Option granted
pursuant to Section 11.1 shall vest and be exercisable as set forth below. 
  
 (i) Initial Grant. The Shares underlying each Option issued pursuant to the Initial Grant shall vest and be exercisable as
to 2.0833% of the Shares at the end of each full succeeding month from the date of grant, rounded down to the nearest whole Share, for so long as the Non-Employee Director continuously remains a Director of, or a Consultant to, the Company.

  
 (ii) Annual Grant. The Shares
underlying each Option issued pursuant to the Annual Grant shall vest and be exercisable as to 8.3333% of the Shares at the end of each full succeeding month from the date of grant, rounded down to the nearest whole Share, for so long as the
Non-Employee Director continuously remains a Director of, or a Consultant to, the Company. 
  
 (e) Termination of Service. The following provisions shall govern the exercise of any Options held by the Awardee at the time the
Awardee ceases to serve as a Non-Employee Director, Employee or Consultant: 
  
 (i) In General. Except as otherwise provided in Section 10.3, after cessation of service (the “Cessation
Date”), the Awardee’s Options shall be exercisable to the extent (but only to the extent) they are vested on the Cessation Date and only during the three months after such Cessation Date, but in no event after the Expiration Date. To
the extent the Awardee does not exercise an Option within the time specified for exercise, the Option shall automatically terminate. 
  
 (ii) Death or Disability. If an Awardee’s cessation of service is due to death or disability (as determined by the
Board), all Options of that Awardee, to 

  

 21 

	 	 
the extent exercisable upon such Cessation Date, may be exercised for one year after the Cessation Date, but in no event after the Expiration Date. In the
case of a cessation of service due to death, an Option may be exercised as provided in Section 16. In the case of a cessation of service due to disability, if a guardian or conservator has been appointed to act for the Awardee and been granted this
authority as part of that appointment, that guardian or conservator may exercise the Option on behalf of the Awardee. Death or disability occurring after an Awardee’s cessation of service shall not cause the cessation of service to be treated
as having occurred due to death or disability. To the extent an Option is not so exercised within the time specified for its exercise, the Option shall automatically terminate. 

  
 (f) Board Discretion. The Awards under this Section
11.1 are not intended as the exclusive Awards that may be made to Non-Employee Directors under this Plan. The Board may, in its discretion, amend the Plan with respect to the terms of the Awards herein, may add or substitute other types of Awards or
may temporarily or permanently suspend Awards hereunder, all without approval of the Company’s stockholders. 
  
 11.2 Director Fee Option Grants 
  
 (a) Option Grants. The Board shall have the sole and exclusive authority to determine the calendar year or years for which the
Director fee option grant program (the “Director Fee Option Program”) is to be in effect. For each such calendar year the program is in effect, each Non-Employee Director may elect to apply all or any portion of the annual retainer
fee otherwise payable in cash, for his or her service on the Board for that year, to the acquisition of a special Option grant under this Director Fee Option Program. Such election must be filed with the Company’s Chief Financial Officer prior
to first day of the calendar year for which the annual retainer fee which is the subject of that election is otherwise payable. Each Non-Employee Director who files such a timely election shall automatically be granted an Option under this Director
Fee Option Program on the first trading day in January in the calendar year for which the annual retainer fee which is the subject of that election would otherwise be payable in cash.  
  
 (b) Option Terms. Each Option shall be a Nonstatutory
Option governed by the terms and conditions specified below. 
  
 (i) Exercise Price. 
  
 A. The Purchase Price shall be thirty-three and one-third percent (33-1/3%) of the Fair Market Value per Share on the Option grant date. 
  
 B. The Purchase Price shall become immediately due upon exercise of the Option and shall be payable in one
or more of the alternative forms authorized pursuant to Section 6.4 of this Plan. Except to the extent the sale and 

  

 22 

	 	 
remittance procedure specified thereunder is utilized, payment of the Purchase Price must be made on the date that the Option is exercised.

  
 (ii) Number of Option
Shares. The number of Shares subject to the Option shall be determined pursuant to the following formula (rounded down to the nearest whole number): 
  
 X = A ÷ (B x 66-2/3%), where 
  
 X is the number of Option Shares, 
  
 A is the portion of the annual retainer fee subject to the Non-Employee Director’s election, and

  
 B is the Fair Market Value of a Share on the
option grant date. 
  
 (iii) Exercise and
Term of Options. The Option shall become exercisable in a series of twelve (12) equal monthly installments upon the Awardee’s completion of each month of Board service over the twelve (12)-month period measured from the grant date. Each
Option shall have a maximum term of ten (10) years measured from the Option grant date.  
  
 (iv) Termination of Board Service. Should the Awardee cease Board service for any reason (other than death or permanent
disability) while holding one or more Options under this Director Fee Option Program, then each such Option shall remain exercisable, for any or all of the Shares for which the Option is exercisable at the time of such cessation of Board service,
until the earlier of (x) the expiration of the ten (10)-year Option term or (y) the expiration of the three (3)-year period measured from the date of such cessation of Board service. However, each Option held by the Awardee under this Director Fee
Option Program at the time of his or her cessation of Board service shall immediately terminate and cease to remain outstanding with respect to any and all Shares for which the Option is not otherwise at that time exercisable.  
  
 (v) Death or Permanent Disability. Should the
Awardee’s service as a Board member cease by reason of death or permanent disability, then each Option held by such Awardee under this Director Fee Option Program shall immediately become exercisable for all the Shares at the time subject to
that Option, and the Option may be exercised for any or all of those Shares as fully-vested Shares until the earlier of (x) the expiration of the ten (10)-year option term or (y) the expiration of the three (3)-year period measured from the date of
such cessation of Board service. 
  
 Should the Awardee die
after cessation of his or her Board service but while holding one or more Options under this Director Fee Option Program, then each such Option may be exercised, for any or all of the shares for which the Option is exercisable 

  

 23 

 
at the time of the Awardee’s cessation of Board service (less any Shares subsequently purchased by the Awardee prior to death), by the personal
representative of the Awardee’s estate or by the person or persons to whom the Option is transferred pursuant to the Awardee’s will or in accordance with the laws of descent and distribution or by the designated beneficiary or
beneficiaries of such option. Such right of exercise shall lapse, and the Option shall terminate, upon the earlier of (xx) the expiration of the ten (10)-year Option term or (yy) the three (3)-year period measured from the date of the Awardee’s
cessation of Board service. 
  
 11.3 Certain Transactions and
Events 
  
 (a) In the event of a Fundamental
Transaction while the Awardee remains a Non-Employee Director, the Shares at the time subject to each outstanding Option held by such Awardee pursuant to Section 11, but not otherwise vested, shall automatically vest in full so that each such Option
shall, immediately prior to the effective date of the Fundamental Transaction, become exercisable for all the Shares as fully vested Shares and may be exercised for any or all of those vested Shares. Immediately following the consummation of the
Fundamental Transaction, each Option shall terminate and cease to be outstanding, except to the extent assumed by the successor corporation (or Affiliate thereof). 
  
 (b) In the event of a Change in Control while the Awardee remains a Non-Employee Director, the Shares at the
time subject to each outstanding Option held by such Awardee pursuant to Section 11, but not otherwise vested, shall automatically vest in full so that each such Option shall, immediately prior to the effective date of the Change in Control, become
exercisable for all the Shares as fully vested Shares and may be exercised for any or all of those vested Shares. Each such Option shall remain exercisable for such fully vested Shares until the expiration or sooner termination of the Option term in
connection with a Change in Control. 
  
 (c) Each
Option which is assumed in connection with a Fundamental Transaction shall be appropriately adjusted, immediately after such Fundamental Transaction, to apply to the number and class of securities which would have been issuable to the Awardee in
consummation of such Fundamental Transaction had the Option been exercised immediately prior to such Fundamental Transaction. Appropriate adjustments shall also be made to the Option Price payable per share under each outstanding Option, provided
the aggregate Option Price payable for such securities shall remain the same. To the extent the actual holders of the Company’s outstanding Common Stock receive cash consideration for their Common Stock in consummation of the Fundamental
Transaction, the successor corporation may, in connection with the assumption of the outstanding Options granted pursuant to Section 11, substitute one or more shares of its own common stock with a fair market value equivalent to the cash
consideration paid per share of Common Stock in such Fundamental Transaction. 
  

 24 

 (d) The grant of Options pursuant to Section 11 shall in no way affect the right of the
Company to adjust, reclassify, reorganize or otherwise change its capital or business structure or to merge, consolidate, dissolve, liquidate or sell or transfer all or any part of its business or assets. 
  
 (e) The remaining terms of each Option granted pursuant to
Section 11 shall, as applicable, be the same as terms in effect for Awards granted under this Plan. Notwithstanding the foregoing, the provisions of Section 9.4 and Section 10 shall not apply to Options granted pursuant to Section 11. 
  
 11.4 Limited Transferability of Options. Each Option granted
pursuant to Section 11 may be assigned in whole or in part during the Awardee’s lifetime to one or more members of the Awardee’s family or to a trust established exclusively for one or more such family members or to an entity in which the
Awardee is majority owner or to the Awardee’s former spouse, to the extent such assignment is in connection with the Awardee ‘s estate or financial plan or pursuant to a Domestic Relations Order. The assigned portion may only be exercised
by the person or persons who acquire a proprietary interest in the Option pursuant to the assignment. The terms applicable to the assigned portion shall be the same as those in effect for the Option immediately prior to such assignment and shall be
set forth in such documents issued to the assignee as the Administrator may deem appropriate. The Awardee may also designate one or more persons as the beneficiary or beneficiaries of his or her outstanding Options under Section 11, and those
Options shall, in accordance with such designation, automatically be transferred to such beneficiary or beneficiaries upon the Awardee ‘s death while holding those Options. Such beneficiary or beneficiaries shall take the transferred Options
subject to all the terms and conditions of the applicable Award Agreement evidencing each such transferred Option, including (without limitation) the limited time period during which the Option may be exercised following the Awardee’s
death. 
  

	12.	Withholding and Tax Reporting 

  
 12.1 Tax Withholding Alternatives 
  
 (a) General. Whenever Award Shares are issued or become free of restrictions, the Company may require the Awardee to remit
to the Company an amount sufficient to satisfy any applicable tax withholding requirement, whether the related tax is imposed on the Awardee or the Company. The Company shall have no obligation to deliver Award Shares or release Award Shares from an
escrow or permit a transfer of Award Shares until the Awardee has satisfied those tax withholding obligations. Whenever payment in satisfaction of Awards is made in cash, the payment will be reduced by an amount sufficient to satisfy all tax
withholding requirements. 
  
 (b) Method of
Payment. The Awardee shall pay any required withholding using the forms of consideration described in Section 6.4(b), except that, in the discretion 

  

 25 

 
of the Administrator, the Company may also permit the Awardee to use any of the forms of payment described in Section 6.4(c). The Administrator, in its sole
discretion, may also permit Award Shares to be withheld to pay required withholding. If the Administrator permits Award Shares to be withheld, the Fair Market Value of the Award Shares withheld, as determined as of the date of withholding, shall not
exceed the amount determined by the applicable minimum statutory withholding rates. 
  
 12.2 Reporting of Dispositions. Any holder of Option Shares acquired under an Incentive Stock Option shall promptly notify the Administrator, following such procedures as the Administrator may require, of the
sale or other disposition of any of those Option Shares if the disposition occurs during: (a) the longer of two years after the Grant Date of the Incentive Stock Option and one year after the date the Incentive Stock Option was exercised, or (b)
such other period as the Administrator has established. 
  

	13.	Compliance with Law 

  
 The grant of Awards and the issuance and subsequent transfer of Award Shares shall be subject to compliance with all Applicable Law, including all
applicable securities laws. Awards may not be exercised, and Award Shares may not be transferred, in violation of Applicable Law. Thus, for example, Awards may not be exercised unless: (a) a registration statement under the Securities Act is then in
effect with respect to the related Award Shares, or (b) in the opinion of legal counsel to the Company, those Award Shares may be issued in accordance with an applicable exemption from the registration requirements of the Securities Act and any
other applicable securities laws. The failure or inability of the Company to obtain from any regulatory body the authority considered by the Company’s legal counsel to be necessary or useful for the lawful issuance of any Award Shares or their
subsequent transfer shall relieve the Company of any liability for failing to issue those Award Shares or permitting their transfer. As a condition to the exercise of any Award or the transfer of any Award Shares, the Company may require the Awardee
to satisfy any requirements or qualifications that may be necessary or appropriate to comply with or evidence compliance with any Applicable Law. 
  

	14.	Amendment or Termination of this Plan or Outstanding Awards 

  
 14.1 Amendment and Termination. The Board may at any time amend, suspend, or terminate this Plan. 
  
 14.2 Stockholder Approval. The Company shall obtain the approval of
the Company’s stockholders for any amendment to this Plan if stockholder approval is necessary or desirable to comply with any Applicable Law or with the requirements applicable to the grant of Awards intended to be Incentive Stock Options. The
Board 

  

 26 

 
may also, but need not, require that the Company’s stockholders approve any other amendments to this Plan. 
  
 14.3 Effect. No amendment, suspension, or termination of this Plan,
and no modification of any Award even in the absence of an amendment, suspension, or termination of this Plan, shall impair any existing contractual rights of any Awardee unless the affected Awardee consents to the amendment, suspension,
termination, or modification. Notwithstanding anything herein to the contrary, no such consent shall be required if the Board determines, in its sole and absolute discretion, that the amendment, suspension, termination, or modification: (a) is
required or advisable in order for the Company, this Plan or the Award to satisfy Applicable Law, to meet the requirements of any accounting standard or to avoid any adverse accounting treatment, or (b) in connection with any transaction or event
described in Section 10, is in the best interests of the Company or its stockholders. The Board may, but need not, take the tax or accounting consequences to affected Awardees into consideration in acting under the preceding sentence. Those
decisions shall be final, binding and conclusive. Termination of this Plan shall not affect the Administrator’s ability to exercise the powers granted to it under this Plan with respect to Awards granted before the termination of Award Shares
issued under such Awards even if those Award Shares are issued after the termination. 
  

	15.	Reserved Rights 

  
 15.1 Nonexclusivity of this Plan. This Plan shall not limit the power of the Company or any Affiliate to adopt other incentive arrangements
including, for example, the grant or issuance of stock options, stock, or other equity-based rights under other plans. 
  
 15.2 Unfunded Plan. This Plan shall be unfunded. Although bookkeeping accounts may be established with respect to Awardees, any such accounts will
be used merely as a convenience. The Company shall not be required to segregate any assets on account of this Plan, the grant of Awards, or the issuance of Award Shares. The Company and the Administrator shall not be deemed to be a trustee of stock
or cash to be awarded under this Plan. Any obligations of the Company to any Awardee shall be based solely upon contracts entered into under this Plan, such as Award Agreements. No such obligations shall be deemed to be secured by any pledge or
other encumbrance on any assets of the Company. Neither the Company nor the Administrator shall be required to give any security or bond for the performance of any such obligations. 
  

	16.	Special Arrangements Regarding Award Shares 

  
 16.1 Escrow of Stock Certificates. To enforce any restrictions on Award Shares, the Administrator may require their holder to deposit the
certificates representing Award Shares, with stock powers or other transfer instruments approved by the Administrator endorsed in blank, with the Company or an agent of the Company to hold 

  

 27 

 
in escrow until the restrictions have lapsed or terminated. The Administrator may also cause a legend or legends referencing the restrictions to be placed on
the certificates. 
  
 16.2 Repurchase Rights 
  
 (a) General. If a Stock Award is
subject to vesting conditions, the Company shall have the right, during the seven months after the Awardee’s Termination, to repurchase any or all of the Award Shares that were unvested as of the date of that Termination. The repurchase price
shall be determined by the Administrator in accordance with this Section 16.2 which shall be either (i) the Purchase Price for the Award Shares (minus the amount of any cash dividends paid or payable with respect to the Award Shares for which the
record date precedes the repurchase) or (ii) the lower of (A) the Purchase Price for the Shares or (B) the Fair Market Value of those Award Shares as of the date of the Termination. The repurchase price shall be paid in cash. The Company may assign
this right of repurchase. 
  
 (b)
Procedure. The Company or its assignee may choose to give the Awardee a written notice of exercise of its repurchase rights under this Section 16.2. However, the Company’s failure to give such a notice shall not affect its rights
to repurchase Award Shares. The Company must, however, tender the repurchase price during the period specified in this Section 16.2 for exercising its repurchase rights in order to exercise such rights. 
  

	17.	Beneficiaries 

  
 An Awardee may file a written designation of one or more beneficiaries who are to receive the Awardee’s rights under the Awardee’s Awards after
the Awardee’s death. An Awardee may change such a designation at any time by written notice. If an Awardee designates a beneficiary, the beneficiary may exercise the Awardee’s Awards after the Awardee’s death. If an Awardee dies when
the Awardee has no living beneficiary designated under this Plan, the Company shall allow the executor or administrator of the Awardee’s estate to exercise the Award or, if there is none, the person entitled to exercise the Option under the
Awardee’s will or the laws of descent and distribution. In any case, no Award may be exercised after its Expiration Date. 
  

	18.	Miscellaneous 

  
 18.1 Governing Law. This Plan, the Award Agreements and all other agreements entered into under this Plan, and all actions taken under this Plan or
in connection with Awards or Award Shares, shall be governed by the laws of the State of Delaware. 
  

 28 

 18.2 Determination of Value. Fair Market Value shall be determined as follows: 
  
 (a) Listed Stock. If the Shares are traded on
any established stock exchange or quoted on a national market system, Fair Market Value shall be the closing sales price for the Shares as quoted on that stock exchange or system for the date the value is to be determined (the “Value
Date”) as reported in The Wall Street Journal or a similar publication. If no sales are reported as having occurred on the Value Date, Fair Market Value shall be that closing sales price for the last preceding trading day
on which sales of Shares are reported as having occurred. If no sales are reported as having occurred during the five trading days before the Value Date, Fair Market Value shall be the closing bid for Shares on the Value Date. If Shares are listed
on multiple exchanges or systems, Fair Market Value shall be based on sales or bid prices on the primary exchange or system on which Shares are traded or quoted. 
  
 (b) Stock Quoted by Securities Dealer. If Shares are regularly quoted by a recognized
securities dealer but selling prices are not reported on any established stock exchange or quoted on a national market system, Fair Market Value shall be the mean between the high bid and low asked prices on the Value Date. If no prices are quoted
for the Value Date, Fair Market Value shall be the mean between the high bid and low asked prices on the last preceding trading day on which any bid and asked prices were quoted. 
  
 (c) No Established Market. If Shares are not traded on any established stock exchange or
quoted on a national market system and are not quoted by a recognized securities dealer, the Administrator (following guidelines established by the Board or Committee) will determine Fair Market Value in good faith. The Administrator will consider
the following factors, and any others it considers significant, in determining Fair Market Value: (i) the price at which other securities of the Company have been issued to purchasers other than Employees, Directors, or Consultants, (ii) the
Company’s stockholder’s equity, prospective earning power, dividend-paying capacity, and non-operating assets, if any, and (iii) any other relevant factors, including the economic outlook for the Company and the Company’s industry,
the Company’s position in that industry, the Company’s goodwill and other intellectual property, and the values of securities of other businesses in the same industry. 
  
 18.3 Reservation of Shares. During the term of this Plan, the Company shall at all times reserve and keep available
such number of Shares as are still issuable under this Plan. 
  
 18.4 Electronic Communications. Any Award Agreement, notice of exercise of an Award, or other document required or permitted by this Plan may be delivered in writing or, to the extent determined by the Administrator,
electronically. Signatures may also be electronic if permitted by the Administrator. 
  
 18.5 Notices. Unless the Administrator specifies otherwise, any notice to the Company under any Option Agreement or with respect to any Awards or Award Shares shall be in writing (or, if so authorized by
Section 17.4, communicated electronically), shall be addressed to the Secretary of the Company, and shall only be effective when received by the Secretary of the Company. 
  

 29Sub-Lease Ageement

  
 Exhibit 10.4

  
 SUBLEASE 
  
 THIS SUBLEASE
(“Sublease”) is dated for references purposes only as of December 5, 2002, and is entered by and between THERAVANCE, INC., a Delaware corporation (“Sublessor”), and
THRESHOLD PHARMACEUTICALS, INC., a Delaware corporation (“Sublessee”). Sublessor and Sublessee hereby agree as follows: 
  
 1. RECITALS. HMS Gateway
Office L.P., a Delaware limited partnership, predecessor-in-interest to ARE-901/951 Gateway Boulevard, LLC, a Delaware limited liability company (“Master Lessor”), as Landlord, and Sublessor, under its former name of Advanced Medicine,
Inc., as Tenant, entered that certain Lease Agreement, dated January 1, 2001 (“Master Lease”), with respect to certain premises consisting of approximately sixty thousand (60,000) rentable square feet of space (“Premises”)
comprising that certain building (“Building”) located at 951 Gateway Boulevard, South San Francisco, California 94080. A partially redacted copy of the Master Lease is attached hereto as Exhibit A and incorporated by reference herein.

  
 2. SUBLEASE; SUBLEASED
PREMISES. Sublessor hereby subleases to Sublessee, and Sublessee hereby subleases from Sublessor, that portion of the Premises consisting of approximately ten thousand five hundred nine (10,509)
rentable square feet comprised of the unoccupied portion of the Premises located on the third floor of the Building (“Subleased Premises”). The Subleased Premises are more particularly described on Exhibit B attached hereto and
incorporated by reference herein. Sublessee shall additionally have the right to use of and access to Sublessee’s Share (as defined in Paragraph 4.B. below) of the warehouse and biohazardous waste areas of the Premises, as more particularly set
forth herein, and the right to use in common with Sublessor and other tenants of the Building the lobby areas of the Premises. Sublessee shall have the right to warehouse within the warehouse area those items which are shipped to Sublessee, and
shall have the right to retrieve such items from the warehouse area during the normal business hours of Sublessor, and subject to Sublessor’s reasonable security measures. Sublessor shall not unpack or otherwise alter any of the original
packaging of any item received or stored in the warehouse area by Sublessee. Sublessee’s use of the biohazardous waste area is in conjunction with the services to be provided by Sublessor as detailed in Section 30 and Exhibit E. The parties
agree that while Sublessee will not use the biohazardous waste area for its own operations. Sublessee and its employees, agents and contractors shall be obligated to remove any biohazardous waste from the biohazardous waste area for disposal.
Sublessee shall arrange for removal of any biohazardous waste from the biohazardous waste area during Sublessor’s normal business hours and subject to Sublessor’s reasonable security measures. 
  
 3. TERM. 
  
 A. Term. The term (“Term”) of this
Sublease shall commence on the later of (i) the date on which Sublessor has received Master Lessor’s written consent to this Sublease, and (ii) January 1, 2003 (“Commencement Date”). The term of this Sublease shall expire on December
31, 2004 (“Expiration Date”), unless sooner terminated pursuant to the provisions hereof or pursuant to the provisions of the Master Lease. 
  

 1. 

 B. Delay in Delivery of Possession. Sublessor shall use commercially reasonable
efforts to deliver possession of the Subleased Premises on the Commencement Date. If Sublessor is unable to deliver possession of the Subleased Premises in the required condition to Sublessee on the Commencement Date for any reason whatsoever,
Sublessor shall not be subject to any liability therefor, nor shall such failure affect the validity of this Sublease or the obligations of Sublessee hereunder, or extend the Term, but in such case Sublessee shall not be obligated to pay Rent (as
defined in Paragraph 4.C. below) or perform any other obligation of Sublessee hereunder until Sublessor delivers possession of the Subleased Premises to Sublessee in the required condition. Sublessor and Sublessee shall execute a Commencement Date
memorandum establishing the Commencement Date and the Expiration Date promptly after the Commencement Date has been established. Sublessee’s failure to execute a Commencement Date memorandum shall not affect the validity of this Sublease.
Notwithstanding anything to the contrary contained herein, if Sublessor has not delivered the Subleased Premises in the required condition to Sublessee on or before January 15, 2003, then Sublessee shall have the right thereafter to cancel this
Sublease, and upon such cancellation, Sublessor shall return to Sublessee the Letter of Credit and all sums theretofore deposited by Sublessee with Sublessor, and neither party shall have any further liability to the other. The foregoing shall be
Sublessee’s sole and exclusive remedy in the event of a termination pursuant to this Paragraph. 
  
 C. Early Entry. Notwithstanding anything to the contrary contained in this Sublease, for the period commencing with the date
of Master Lessor’s consent to this Sublease (if Master Lessor’s consent is obtained prior to January 1, 2003) through December 31, 2002, Sublessee shall have access to the Premises, without any obligation to pay Rent hereunder but subject
to all other terms and conditions of this Sublease, for the purpose of installing its data, telephone and telecommunications cabling and wiring, furniture, fixtures and equipment. During such early occupancy period, Sublessee shall also have the
right to allow its employees to set-up individual cubicle areas and to install and check computers and other equipment. In exercising the foregoing early entry right, Sublessee shall use reasonable efforts not to interfere with Sublessor’s
construction of the Demising Improvements and the Sublessor Improvements (as defined in Paragraph 14 below). 
  
 4. RENT. 
  
 A. Monthly Base Rent. Commencing on the Commencement Date and continuing on the first day of each calendar month during the Term,
Sublessee shall pay to Sublessor monthly base rent (“Monthly Base Rent”) for the Subleased Premises as follows: 
  
 (i) For months one (1) through twelve (12) of the Term, Sublessee shall pay Monthly Base Rent in the amount of $1.03 per rentable
square foot, or $10,824.27 per month. 
  
 (ii) For months thirteen (13) through twenty-four (24) of the Term, Sublessee shall pay Monthly Base Rent in the amount of $1.23 per rentable square foot, or $12,926.07 per month. 
  
 As used herein, “month” shall mean a period beginning on the first (1st) day of a
calendar month and ending on the last day of that month. Monthly Base Rent shall be paid on or before the first 

  

 2. 

 
(1st) day of each month. Rent for any period during the Term hereof which is for less than one month of the Term shall be a prorata portion of the monthly
installment based on a 30-day month. Rent shall be payable without notice or demand and without any deduction, offset, or abatement, in lawful money of the United States of America. Rent shall be paid directly to Sublessor at the address stated
below or to such other persons or at such other places as Sublessor may designate from, time to time to Sublessee in writing. 
  
 B. Additional Rent. In addition to Monthly Base Rent, Sublessee shall pay to Sublessor, at the time that Sublessee pays Monthly
Base Rent or, if otherwise so notified by Sublessor in writing, within twenty (20) days after receipt of Sublessor’s invoice therefor, Sublessee’s share of “Tenant’s Proportionate Share” of all “Additional Rent”
(as defined in Section 4.2 of the Master Lease) (“Sublessee’s Share”), including, without limitation, Taxes and Assessments, Insurance, Utilities, Common Area Expenses, Parking Charges, Maintenance and Repair Costs, Life Safety Costs,
Management and Administration, Operational Fees Related to Expansion Approvals and Gateway Operational Expenses, all as more particularly described in Section 4.2. of the Master Lease, payable by Sublessor under the Master Lease. Notwithstanding the
foregoing or anything to the contrary in this Sublease, Sublessee shall not be required to pay any Additional Rent or to perform any obligation that is (1) fairly allocable to any period of time prior to the Commencement Date or following the
expiration or sooner termination of this Sublease (for any reason other than Sublessee’s default), (2) fairly allocable to any portion of the Premises other than the Subleased Premises, (3) payable as a result of a default by Sublessor of any
of its obligations under the Master Lease, or as a result of the negligence or willful misconduct of Sublessor or any of its agents, employees, or contractors, or (4) incurred for the sole benefit of Sublessor. Sublessee’s Share shall be
seventeen and fifty-two hundredths percent (17.52%), which is determined by dividing the square footage of the Subleased Premises (10,509 rentable square feet) by the square footage of the Premises (60,000 rentable square feet). Notwithstanding the
foregoing, Sublessee’s Share of “Tenant’s Proportionate Share” of “Additional Rent” conclusively is established for purposes of this Sublease at $0.34 per rentable square foot per month for each month during the Term.

  
 Commencing on the Commencement Date and continuing for each
month during the Term, Sublessee shall pay to Sublessor Sublessee’s Share for the Subleased Premises in the amount of $0.34 per rentable square foot, or $3,537.06 per month. 
  
 In addition, Sublessee shall be responsible for payment directly to the provider for Sublessee’s telephone, data and telecommunications
costs, fees, charges and expenses, and Sublessee’s personal property taxes as set forth in Article 28 of the Master Lease; provided, however, that Sublessee shall not be responsible for payment of personal property taxes on Furniture or
Equipment being leased by Sublessee from Sublessor pursuant to Paragraph 30.B below. 
  
 C. Rent. All monies required to be paid by Sublessee under this Sublease (except for Monthly Base Rent, as defined in Paragraph
4.A. above), including all other payment obligations imposed by the Master Lease with respect to the Subleased Premises and incorporated by reference herein, shall be deemed additional sublease rent (“Additional Sublease Rent”). Monthly
Base Rent and Additional Sublease Rent (including the Reimbursements defined in Paragraph 30.D. below) hereinafter collectively shall be referred to as “Rent.” A schedule showing the Monthly Base Rent and Additional Sublease Rent payable
by Sublessee 

  

 3. 

 
during the Term is attached hereto as Exhibit F and incorporated by reference herein, and the parties expressly agree that Exhibit F sets forth
the total capped amounts to be paid by Sublessee under this Sublease; Sublessee’s payment obligations for Monthly Base Rent and Additional Sublease Rent pursuant to this Sublease shall neither exceed nor be less than the amounts set forth on
Exhibit F. 
  
 D. Payment of First
Month’s Rent. Upon the execution of this Sublease by Sublessee and Sublessor and Master Lessor’s Consent, Sublessee shall pay to Sublessor the sum of $37,306.95, which sum shall constitute Monthly Base Rent and Additional Sublease Rent
(including Reimbursements) for the Subleased Premises for the first month of the Term. 
  
 5. LETTER OF CREDIT. 
  
 A. Requirements. Within five (5) days after the execution of this Sublease by Sublessor and Sublessee, Sublessee shall
deliver to Sublessor an unconditional, irrevocable, renewable and transferable letter of credit in favor of Sublessor in a form reasonably approved by Sublessor, issued by a federally-insured bank with a branch located within fifty (50) miles of the
Subleased Premises that is otherwise reasonably acceptable to Sublessor (the “Issuing Bank”), in the amount of $85,000.00 (“Stated Amount”), to be held by Sublessor in accordance with the terms, provisions and conditions of this
Sublease. The Letter of Credit shall state that an authorized officer or other representative of Sublessor may make demand on Sublessor’s behalf for the Stated Amount of the Letter of Credit, or any portion thereof, from time to time, and that
the Issuing Bank must immediately honor such demand, without qualification or satisfaction of any conditions except the proper identification of the party making such demand, accompanied by the original Letter of Credit and a written statement
signed by such party certifying that (i) such amount is due and owing under the Sublease as a result of a default, beyond applicable notice and cure periods, under one or more provisions of the Sublease, or (ii) Sublessor has received the Issuing
Bank’s notice of non-renewal of the Letter of Credit. The Letter of Credit shall provide that it shall be deemed automatically renewed, without amendment, for consecutive periods of one year each thereafter through the date that is thirty (30)
days after the Expiration Date unless the Issuing Bank sends a notice (“Non-Renewal Notice”) to Sublessor by certified mail, return receipt requested, not less than sixty (60) days prior to the next expiration date of the Letter of Credit
stating that the Issuing Bank has elected not to renew the Letter of Credit. Sublessor shall have the right, upon receipt of the Non-Renewal Notice, to draw the full amount of the Letter of Credit, by sight draft on the Issuing Bank, and shall
thereafter hold or apply the cash proceeds of the Letter of Credit pursuant to the terms of this Paragraph until Sublessee delivers to Sublessor a substitute Letter of Credit which meets the requirements of this Paragraph. If (i) a default beyond
any applicable notice and cure period occurs in the payment or performance of any of the terms, covenants or conditions of this Sublease, including, without limitation, the payment of Rent (it being understood that no notice of a default by
Sublessee hereunder need be given by Sublessor to Sublessee if Sublessee is the subject of a bankruptcy proceeding), or (ii) Sublessor receives a Non-Renewal Notice and Sublessee does not provide a substitute Letter of Credit satisfying the
requirements of this Paragraph 5. A within ten (10) business days following the date of such Non-Renewal Notice, or (iii) if Sublessee files a voluntary petition under Title 11 of the United States Bankruptcy Code or otherwise becomes a debtor in
any case or proceeding under the United States Bankruptcy Code, as now existing or hereafter amended, or any similar law or statute, then Sublessor may 

  

 4. 

 
notify the Issuing Bank in writing that the event described in (i), (ii) or (iii) above has occurred and thereupon receive all or such portion of the Stated
Amount as is then available, and so long as such default is continuing or a replacement Letter of Credit has not been provided, Sublessor shall have the right to use such proceeds (and the proceeds received from such draw shall constitute
Sublessor’s property [and not Sublessee’s property or the property of the bankruptcy estate of Sublessee]) for the uses hereinbelow authorized, and use, apply, or retain the whole or any part of such proceeds, as the case may be, to the
extent required for the payment of any Rent or any other sum as to which Sublessee is in default, including, but not limited to (a) any sum which Sublessor may expend or may be required to expend by reason of the default, and/or (b) any damages to
which Sublessor is entitled pursuant to this Sublease, whether such damages accrue before or after summary proceedings or other reentry by Sublessor. If Sublessor applies or retains any part of the Stated Amount, Sublessee, within ten (10) business
days after receipt of demand, shall deposit with Sublessor the amount so applied or retained so that Sublessor shall have the full Stated Amount on hand at all times during the Term, and Sublessee’s failure to do so shall be an additional
default hereunder without any obligation of Sublessor to provide an additional notice or cure period. If Sublessee shall fully and faithfully comply with all of the terms, covenants and conditions of this Sublease, the Letter of Credit (or so much
thereof as remains after Sublessor has been adequately compensated for damages due to Sublessee’s failure to comply fully with the terms, covenants and conditions of this Sublease) shall be returned to Sublessee not later than the date that is
thirty (30) days after the Expiration Date. Sublessee shall be responsible for payment of any set-up fees and draw-down costs and fees associated with the Letter of Credit, but shall not be responsible for any transfer costs or fees. Notwithstanding
anything contained in this Paragraph to the contrary, if for any reason Sublessor draws on the Letter of Credit, then Sublessee shall have the right, upon ten (10) days’ prior written notice to Sublessor, to obtain a refund from Sublessor of
any unapplied proceeds of the Letter of Credit which Sublessor has drawn upon, any such refund being conditioned upon Sublessee simultaneously delivering to Sublessor a new replacement Letter of Credit in the amount of the original Letter of Credit,
and otherwise meeting the requirements of this Paragraph. 
  
 B. Sublessor’s Rights. Sublessor shall not be required to keep any proceeds from the Letter of Credit separate from its general funds. If Sublessor assigns its interest in this Sublease, Sublessor shall
assign the Letter of Credit to such transferee (or cause Sublessee [at no cost to Sublessee] to cause the Issuing Bank to issue a replacement letter of credit to such transferee), and if such transferee accepts in writing Sublessor’s
obligations under this Sublease, thereupon Sublessor shall be discharged from any further liability with respect to the Letter of Credit and said proceeds and Sublessee shall look solely to such transferee for the return of the Letter of Credit or
any proceeds therefrom. The costs associated with any permitted transfer of the Letter of Credit shall be paid by Sublessor. The use, application or retention of the Letter of Credit, or the proceeds or any portion thereof, shall not prevent
Sublessor from exercising any other rights or remedies provided under this Sublease, it being intended that Sublessor shall not be required to proceed against the Letter of Credit, and such use, application or retention of the Letter of Credit shall
not operate as a limitation on any recovery to which Sublessor may otherwise be entitled. No trust relationship is created herein between Sublessor and Sublessee with respect to the Letter of Credit or any proceeds thereof. Sublessor and Sublessee
acknowledge and agree that in no event shall the Letter of Credit, any renewal thereof or substitute therefor or the proceeds thereof be (i) deemed to be or treated as a “security deposit” within the meaning of California Civil Code
Section 1950.7, (ii) subject to the terms of such 

  

 5. 

 
Section 1950.7, or (iii) intended to serve as a “security deposit” within the meaning of such Section 1950.7. The parties hereto (A) recite that
neither the Letter of Credit nor any proceeds thereof is intended to serve as a security deposit, and such Section 1950.7 and any and all other laws, rules and regulations applicable to security deposits in the commercial context shall have no
applicability or relevancy thereto, and (B) waive any and all rights, duties and obligations either party may now or, in the future, will have relating to or arising from such laws, rules and regulations. 
  
 6. PARKING. Subject to Sublessee’s
compliance with the provisions of Section 50 of the Master Lease, Sublessee shall be entitled to the non-exclusive use of twenty-eight (28) parking spaces in the Designated Parking Areas serving the Building. 
  
 7. CONDITION OF THE
SUBLEASED PREMISES. On the Commencement Date, Sublessor shall deliver the Subleased Premises to Sublessee in “move-in” condition, broom- clean, with all building systems and equipment serving the Subleased
Premises in good working order, and in compliance with all applicable governmental codes and regulations (including, without limitation the Americans with Disabilities Act of 1990 [“ADA”]), but otherwise in its “as-is, with all faults
condition”, subject, however to the provisions of Paragraphs 14.B., 31 and 35 below. Notwithstanding anything to the contrary contained in this Sublease, Sublessor warrants that, to the best of its actual knowledge as of the Commencement Date,
Sublessor has not received any notice, written or verbal, from any governmental authority with jurisdiction over the Premises that the Subleased Premises are not in compliance with any laws, codes, ordinances or other governmental requirements then
applicable to the Premises, the Building or the Project Sublessee acknowledges that, except as expressly set forth herein, neither Sublessor nor any agent of Sublessor has made any representation or warranty with respect to the Subleased Premises or
with respect to the suitability of any part of the Subleased Premises for the conduct of Sublessee’s business. Sublessee hereby accepts the Subleased Premises and Building and all improvements thereon, subject, however, to all applicable laws
governing and regulating the use of the Subleased Premises and any covenants or restrictions of record, and accepts this Sublease subject to all of the foregoing and to all matters disclosed in this Sublease. Sublessee acknowledges that neither
Sublessor nor Sublessor’s agents has made any representation or warranty as to the present or future suitability of the Subleased Premises for the conduct of Sublessee’s business or the uses proposed by Sublessee. 
  
 Sublessor shall continue to have obligations as the tenant under the Master
Lease with respect to any alterations, improvements or repairs to the Subleased Premises (other than alterations or improvements installed by Sublessee, the obligations for which shall be Sublessee’s), including, without limitation, any
improvement or repair required to comply with any law, regulation, building code or ordinance (including, without limitation, the ADA); provided, however, that to the extent any of the foregoing items are the responsibility of Master Lessor under
the Master Lease, Sublessor’s sole responsibilities shall be (i) to notify Master Lessor in writing of the need to perform such obligations, (ii) to use commercially reasonable efforts to cause Master Lessor to comply with such obligations, and
(iii) without delay to exercise such rights and remedies under the Master Lease as are available to Sublessor in the event that Master Lessor fails to perform such obligations; provided, however, that with respect to the Subleased Premises, the
foregoing responsibilities of Sublessor shall be at the sole cost and expense of Sublessee. 
  

 6. 

 8. INDEMNIFICATION. 
  
 A. Sublessee’s Indemnification. In addition to the indemnifications set forth in the Master
Lease which are incorporated by reference pursuant to Section 24.A. below, including, without limitation, Sections 9.3, 11.3, 16.1 and 32.10 thereof, and except to the extent caused by Sublessor’s negligence or willful misconduct, Sublessee
shall indemnify, protect, defend with counsel reasonably acceptable to Sublessor and Master Lessor and hold harmless Sublessor and Master Lessor from and against any and all claims, liabilities, judgments, causes of action, actual out-of-pocket
damages (excluding punitive and consequential damages [i.e., lost profits, lost business opportunity]), costs and expenses (including reasonable attorneys’ and experts’ fees), caused by or arising in connection with: (i) the act, omission,
negligence or willful misconduct of Sublessee or its employees, contractors, agents, sublessees, or assignees, or (ii) a breach of Sublessee’s obligations under this Sublease; or (iii) a breach of Sublessee’s obligations under the Master
Lease to the extent incorporated herein with respect to the Subleased Premises, or (iv) a removal of the Furniture or Equipment from the Subleased Premises as a result of any act, omission, failure to act, negligence or willful misconduct by
Sublessee (not caused by Sublessor). The foregoing indemnification shall survive the expiration or earlier termination of this Sublease. 
  
 B. Sublessor’s Indemnification. Except to the extent caused by the negligence or willful misconduct of Sublessee, its agents,
employees, contractors, sublessees or invitees, Sublessor shall indemnify, protect, defend with counsel reasonably acceptable to Sublessee and hold harmless Sublessee from and against any and all claims, liabilities, judgments, causes of action,
actual out-of-pocket damages (excluding punitive and consequential damages [i.e., lost profits, lost business opportunity]), costs and expenses (including reasonable attorneys’ and experts’ fees), caused by or arising in connection with:
(i) the act, omission, negligence or willful misconduct of Sublessor or its employees, contractors, agents, licensees, invitees or assignees in the Building, or (ii) a breach of Sublessor’s obligations under this Sublease; or (iii) a breach of
Sublessor’s obligations under the Master Lease to the extent those obligations are not the obligation of Sublessee as incorporated herein with respect to the Subleased Premises, or (iv) a removal from the Subleased Premises of any of the
Equipment or Furniture as a result of any default by Sublessor (not caused by Sublessee) under any equipment financing agreement or other arrangement, or (v) a termination of this Sublease as a result of a default (not caused by Sublessee) by
Sublessor under the Master Lease. The foregoing indemnification shall survive the expiration or earlier termination of this Sublease. 
  
 9. RIGHT TO CURE DEFAULTS. If Sublessee fails to pay any sum of money when due to
Sublessor, or fails to perform any other act on its part to be performed hereunder, then Sublessor may, but shall not be obligated to, upon three (3) business days’ prior written notice to Sublessee, make such payment or perform such act. All
such sums paid, and all costs and expenses of performing any such act, shall be deemed Additional Sublease Rent payable by Sublessee to Sublessor upon demand, together with interest thereon at the maximum rate permitted by law from the date of the
expenditure until repaid. 
  

 7. 

 10. ASSIGNMENT AND SUBLETTING. 
  
 A. Conditions. Except in strict accordance with the
provisions of Article 23 of the Master Lease, Sublessee shall not have the right to assign this Sublease, sublease the Subleased Premises, transfer any interest of Sublessee therein, or permit any use of the Subleased Premises by another party
(“Transfer”) without the prior written consent of Sublessor, which consent shall not be unreasonably withheld, conditioned or delayed, and the consent of Master Lessor. Sublessee acknowledges that Section 28.3 of the Master Lease provides
that any sublessee of Sublessor shall not have a right to further assign or sublet the Subleased Premises, but Sublessor shall use reasonable good faith efforts to cooperate with Sublessee in attempting to obtain Master Lessor’s consent to any
further sublease or assignment by Sublessee. Sublessor shall not unreasonably withhold or delay its consent to a requested assignment or sublease proposed by Sublessee, but the foregoing agreement of Sublessor shall not be deemed to relieve
Sublessee of the obligation to obtain Master Lessor’s consent thereto, and if Master Lessor refuses its consent to any further assignment or sublease by Sublessee, Sublessor’s consent shall be deemed null and void and of no force or
effect. Any Transfer without the consents required by this Paragraph shall be void and shall, at the option of Sublessor, terminate this Sublease. Sublessor’s consent to any assignment or subletting shall be ineffective unless set forth in
writing, and Sublessee shall not be relieved from any of its obligations under this Sublease unless the consent expressly so provides. 
  
 B. Excess Rents. Except for a Permitted Transfer (as defined in Section 23.4 of the Master Lease), if Sublessor and Master Lessor
approve an assignment or subletting, Sublessee shall pay to Sublessor, as Additional Sublease Rent, one hundred percent (100%) of the Transfer Profits, as defined in Section 23.5 of the Master Lease. 
  
 C. Sublessor’s Recapture Right. Notwithstanding
anything to the contrary contained in this Sublease or the Master Lease, in the event of a proposed Transfer (other than a Permitted Transfer) of substantially all of the Subleased Premises for substantially all of the remaining Term, Sublessor
shall have the right to recapture the Subleased Premises, in which case this Sublease shall terminate as to all of the Subleased Premises. 
  
 11. USE. Sublessee may use the Subleased Premises only for general office and research and development activities associated with
biotechnology/pharmaceutical services, as set forth in the “Permitted Use” section of the Basic Lease Information of the Master Lease and in Article 9 of the Master Lease (to the extent incorporated into this Sublease), and for no other
purposes. The use of the Subleased Premises by Sublessee shall be in accordance with all applicable law. Sublessee shall not conduct, nor permit to be conducted, either voluntarily or involuntarily, any auction, or going out of business, fire or
bankruptcy sale upon the Subleased Premises without first having obtained Sublessor’s prior written consent. Sublessee, at Sublessee’s sole cost and expense, shall obtain and maintain in force during the Term of this Sublease all permits,
licenses and approvals required or necessary for the conduct of the activities of Sublessee on the Subleased Premises. Sublessee shall comply with all rules and regulations promulgated from time to time by Master Lessor. 
  
 12. EFFECT OF CONVEYANCE.
AS used in this Sublease, the term “Sublessor” means the holder of the tenant’s interest under the Master Lease. In the event of any transfer of said tenant’s interest, as of the date of such transfer Sublessor shall be and
hereby is entirely relieved of all covenants and obligations of the Sublessor hereunder accruing after the date of the transfer, 

  

 8. 

 
and it shall be deemed and construed, without further agreement between the parties, that the transferee has assumed and shall carry out all covenants and
obligations to be performed by Sublessor hereunder from and after the date of the transfer. Sublessor shall transfer and deliver any security of Sublessee to the transferee of said tenant’s interest in the Master Lease, and thereupon the
Sublessor shall be discharged from any further liability with respect thereto. 
  
 13. ACCEPTANCE. The parties acknowledge and agree that Sublessee is subleasing the Subleased Premises on an “as is” basis as set forth in Paragraph 7 above, subject, however, to the
provisions of Paragraphs 14.B., 31 and 35 below, and that Sublessor has made no representations or warranties with respect to the condition of the Subleased Premises except as otherwise expressly set forth in this Sublease. 
  
 14. IMPROVEMENTS. 
  
 A. Sublessee’s Alterations. No alterations or
improvements shall be made to the Subleased Premises except in strict accordance with this Sublease and Article 12 of the Master Lease, and with the prior written consent of both Master Lessor and Sublessor, which consent of Sublessor shall not be
unreasonably withheld or delayed. Sublessor approves in concept (with final approval, which shall not be unreasonably withheld or delayed, subject to review of Sublessee’s plans and specifications in connection therewith) Sublessee’s
installation of a laboratory bench in the Subleased Premises (“Bench”). Nothing contained in the foregoing conceptual approval, however, shall relieve Sublessee from the obligation to obtain Master Lessor’s consent to the Bench in
accordance with the Master Lease. If Sublessee intends to construct alterations or improvements to the Subleased Premises, other than the Bench, Sublessee shall be obligated to obtain Sublessor’s and Master Lessor’s prior written consent
to such alterations or improvements. Any alteration or improvement undertaken by Sublessee, including the Bench, shall be performed in accordance with the provisions of Article 12 of the Master Lease, with all required governmental permits and in
compliance with all applicable laws. Sublessor shall not be required to provide a tenant improvement allowance to Sublessee in connection with Sublessee’s construction of any improvements to the Subleased Premises, including the Bench, and any
such improvements, including the Bench, shall be installed at Sublessee’s sole cost and expense. Upon the expiration or earlier termination of this Sublease, Sublessee, at its sole cost and expense, shall be responsible for removing any and all
alterations or improvements installed in the Subleased Premises by Sublessee, and restoring the Subleased Premises to its condition immediately prior to the alteration or improvement, ordinary wear and tear, damage by casualty and condemnation
excepted, unless Master Lessor and/or Sublessor notify Sublessee in writing that Master Lessor and/or Sublessor will not require Sublessee to remove such alterations or improvements. Notwithstanding the foregoing, Sublessee hereby acknowledges that
Sublessee shall be required to remove the Bench upon the expiration or earlier termination of this Sublease, and to restore any portion of the Subleased Premises affected by the Bench to its condition immediately prior to the installation thereof.

  
 B. Sublessor’s Improvements. Not
later than the Commencement Date, Sublessor, at no cost to Sublessee, shall install a card access system and fire wall to complete the demising of the Subleased Premises from the balance of the third floor of the Building (“Demising
Improvements”). In addition, Sublessor, at no cost to Sublessee but subject to the prior written consent of Master Lessor, shall remove the chemistry hoods identified on Exhibit 

  

 9. 

 
C, attached hereto and incorporated by reference herein, and install in place of the hoods two (2) laboratory benches of a quality consistent with the
laboratory benches already located within the Subleased Premises (“Sublessor Improvements”). Each laboratory bench shall have one (1) sink. The Demising Improvements and the Sublessor Improvements shall be constructed in compliance with
the provisions of the Master Lease and all applicable law, in a good and workmanlike manner, free of defects and using materials and equipment of good quality. Sublessee acknowledges and agrees that the Sublessor Improvements will not be completed
by January 1, 2003. Sublessor shall use reasonable efforts to minimize interference with Sublessee’s business operations in constructing the Sublessor Improvements, which shall, in any event, be completed no later than March 31, 2003. Sublessee
shall not be required to remove the Demising Improvements or the Sublessor Improvements upon the expiration or earlier termination of this Sublease. 
  
 15. WAIVER OF SUBROGATION AND RELEASE. Sublessor hereby releases
Sublessee, and Sublessee hereby releases Sublessor, and each of their respective partners, principals, members, officers, agents, employees and servants, from any and all liability for loss, damage or injury to the property of the other in or about
the Subleased Premises which is caused by or results from a peril or event or happening which is covered by property insurance actually carried and in force at the time of the loss by the party sustaining such loss or required to be carried
hereunder. Sublessee shall give notice to all insurance carriers that the foregoing mutual waiver of subrogation is contained in this Sublease, and shall obtain from such insurance carriers a waiver of the rights of subrogation. Except where caused
by the negligence or willful misconduct of Sublessor or as otherwise set forth in Section 8.B., Sublessor shall not be liable to Sublessee, nor shall Sublessee be entitled to terminate this Sublease or to abate Rent for any reason, including,
without limitation: (i) failure or interruption of any utility system or service; or (ii) failure of Master Lessor to maintain the Subleased Premises as may be required under the Master Lease. Notwithstanding the foregoing to the contrary, to the
extent that Rent is abated for Sublessor with respect to the Subleased Premises pursuant to the terms of the Master Lease, Sublessee’s Rent obligations with respect to the Subleased Premises also shall be abated. Sublessor and Sublessee are
corporations, and the obligations of Sublessor and Sublessee shall not constitute the personal obligations of the officers, directors, trustees, partners, joint venturers, members, owners, stockholders or other principals or representatives of such
corporations. 
  
 16. DEFAULT.
Sublessee’s performance of each of its obligations under this Sublease constitutes a condition as well as a covenant, and Sublessee’s right to continue in possession of the Subleased Premises is conditioned upon such performance. In
addition, Sublessee shall be in material default of its obligations under this Sublease if Sublessee is responsible for the occurrence of any of the events of default set forth in Article 24 of the Master Lease. 
  
 17. REMEDIES. In the event of any default by Sublessee
under this Sublease (including, without limitation, a default pursuant to Article 24 of the Master Lease), Sublessor shall have all remedies provided by applicable law and in equity, including, without limitation, all rights pursuant to Article 25
of the Master Lease. Sublessor may resort to its remedies cumulatively or in the alternative. 
  
 18. SURRENDER. Subject to the provisions of Paragraph 14 above, on or before the Expiration Date or earlier termination of this Sublease, Sublessee shall remove all of its trade 

  

 10. 

 
fixtures and all alterations and improvements (unless Master Lessor and Sublessor have notified Sublessee in writing that they will not require Sublessee to
remove its alterations and improvements), and shall surrender the Subleased Premises to Sublessor in the same condition as received, ordinary wear and tear and damage by casualty and condemnation and any obligations of Sublessor under this Sublease
excepted. Any damage or deterioration of the Subleased Premises shall not be deemed ordinary wear and tear if the same could have been prevented by customary and ordinary maintenance practices. Not later than the expiration of the Term of this
Sublease or the date of any sooner termination, Sublessee shall repair any damage to the Subleased Premises occasioned by the installation or removal of Sublessee’s trade fixtures, furnishings, equipment, alterations or improvements and
personal property, and to the extent that Sublessee has reconfigured the Furniture or Equipment, Sublessee shall return the Furniture and Equipment to the location and configuration in which they were received from Sublessor. If the Subleased
Premises are not so surrendered, then Sublessee shall be liable to Sublessor for all costs incurred by Sublessor in returning the Subleased Premises to the required condition, plus interest thereon at the maximum rate permitted by law. Sublessee
shall indemnify, defend, protect and hold harmless Sublessor against any and all claims, liabilities, judgments, causes of action, damages, costs, and expenses (including attorneys’ and experts’ fees) resulting from Sublessee’s delay
in surrendering the Subleased Premises, including, without limitation, any claim made by Master Lessor or any succeeding tenant or subtenant founded on or resulting from such failure to surrender. The indemnification set forth in this Paragraph
shall survive the expiration or earlier termination of this Sublease. Notwithstanding anything contained herein or the Master Lease to the contrary, Sublessee shall have no responsibility for the removal and/or restoration of any alterations or
improvements to the Subleased Premises if not installed or constructed by Sublessee. 
  
 19. BROKERS. Sublessor and Sublessee each represent to the other that they have dealt with no real estate brokers, finders, agents or salesmen in connection with this transaction, except for BT
Commercial, representing Sublessor, and Cornish & Carey Commercial, representing Sublessee. Each party agrees to hold the other party harmless from and against all claims for brokerage commissions, finder’s fees, or other compensation made
by any other agent, broker, salesman or finder as a consequence of said party’s actions or dealings with such other agent, broker, salesman, or finder. The warranties and representations contained in this Paragraph 19 shall survive the
termination of this Sublease. Sublessor shall be responsible for payment of a brokerage commission in connection with this transaction pursuant to a separate agreement between Sublessor and BT Commercial. 
  
 20. NOTICES. Unless five (5) days’ prior written
notice is given in the manner set forth in this Paragraph, the addresses of Sublessor and Sublessee for all purposes connected with this Sublease shall be the addresses set forth below their respective signatures. All notices, demands, or
communications in connection with this Sublease shall be considered received when (i) personally delivered, or (ii) if properly addressed and sent by either nationally recognized overnight courier or deposited in the mail (registered or certified,
return receipt requested, and postage prepaid), on the date shown on the return receipt or other documentation for acceptance or rejection. All notices given to the Master Lessor under the Master Lease shall be considered received only when
delivered in accordance with Article 33 of the Master Lease to 135 North Los Robles Avenue, Suite 250, Pasadena, California 91101. 
  

 11. 

 21. SEVERABILITY. If any term of this Sublease is held to be invalid or
unenforceable by any court of competent jurisdiction, then the remainder of this Sublease shall remain in full force and effect to the fullest extent possible under the law, and shall not be affected or impaired. 
  
 22. AMENDMENT. This Sublease may not be amended except
by the written agreement of all parties hereto. 
  
 23.
ATTORNEYS’ FEES. In the event of any dispute between the parties arising under this Sublease, or the breach of any covenant or condition under this Sublease, then the prevailing party shall be entitled to have
and recover from the party not so prevailing, the prevailing party’s reasonable costs and reasonable attorneys’ fees incurred in any dispute, collection or attempted collection, negotiation relative to the obligations contained herein, or
action or proceeding brought to enforce this Sublease, whether such costs and fees are incurred in taking any action under this Sublease or in any judicial proceeding (including appellate proceedings). “Prevailing party” for the purposes
of this Paragraph 23 shall include, without limitation, the party who receives from the other party the sums allegedly due, performance of the covenants allegedly breached, consideration substantially equal to that which was demanded, or
substantially the relief or consideration sought, whether or not any judicial proceeding is commenced or prosecuted to final judgment, or a party who dismisses a judicial action in return for substantially the performance or relief sought or in the
payment of the sums allegedly due. 
  
 24. OTHER
SUBLEASE TERMS. 
  
 A. Incorporation By Reference. Except as otherwise provided in this Sublease, the terms and conditions of this Sublease shall include various Sections of the Master Lease, which are incorporated into this Sublease as if fully set
forth, except that: (i) each reference in such incorporated Sections to “Lease” shall be deemed a reference to “Sublease”; (ii) each reference to the “Premises” shall be deemed a reference to the “Subleased
Premises”; (iii) each reference to “Landlord” and “Tenant” shall be deemed a reference to “Sublessor” and “Sublessee”, respectively, except as expressly set forth herein; (iv) each reference to
“Term” shall be deemed a reference to the Term of this Sublease; (v) except as otherwise set forth in this Sublease, with respect to work, services, repairs, restoration, provision of insurance or the performance of any other obligation of
Master Lessor under the Master Lease relative to the Subleased Premises, the sole obligations of Sublessor shall be to request the same in writing from Master Lessor as and when requested to do so by Sublessee, to use Sublessor’s commercially
reasonable efforts to obtain the Master Lessor’s performance thereof, and to exercise such rights and remedies under the Master Lease without delay as are available to Sublessor in the event Master Lessor fails to perform such obligations, all
at Sublessee’s sole cost and expense; (vi) with respect to any obligation of Sublessee to be performed under this Sublease, wherever the Master Lease grants to Sublessor a specified number of days to perform its obligations under the Lease,
Sublessee shall have three (3) fewer days to perform the obligation, including, without limitation, curing any defaults (provided, however, that if any cure period provides for three (3) days or less to perform, Sublessee shall have two (2) business
days to perform); (vii) Sublessor shall have no liability to Sublessee with respect to (a) representations and warranties made by Master Lessor under the Master Lease, (b) any indemnification obligations of Master Lessor under the Master Lease, or
other obligations or liabilities of Master 

  

 12. 

 
Lessor under the Master Lease with respect to compliance with laws, condition of the Subleased Premises or Hazardous Materials, except to the extent
expressly incorporated into this Sublease, and (c) obligations of Master Lessor under the Master Lease to repair, maintain, restore or insure all or any portion of the Subleased Premises; and (viii) with respect to any approval required to be
obtained from the “Landlord” under the Master Lease, such consent must be obtained from both the Master Lessor and Sublessor, and the approval of Sublessor may be withheld if the Master Lessor’s consent is not obtained. In the event
of a conflict between the provisions of the Master Lease and the provisions of this Sublease, as between Sublessor and Sublessee the provisions of this Sublease shall control. 
  
 The following Sections of the Master Lease hereby are incorporated into this Sublease: 
  
 Basic Lease Information Sections “Landlord”,
“Landlord’s Address”, “Tenant”, “Tenant’s Contact Person”, “Tenant’s Address”, “Premises Address”, “Project”, “Building”, “Tenant’s Proportionate Share of
Project” (with “Tenant” meaning Sublessor), “Tenant’s Proportionate Share of Building” (with “Tenant” meaning Sublessor), “Expiration Date” and “Permitted Use”; 
  
 Article 1; 
  
 Section 2.1, except that (i) the first and third sentences hereby are
deleted, and (ii) references to “Landlord” in the second sentence shall mean only Master Lessor; 
  
 Section 2.2(c), except that “Tenant” shall mean only Sublessor with respect to required payments or implementation of programs;

  
 Section 2.3, except that references to
“Landlord” in Sections 2.3(a) and 2.3(b) shall mean only Master Lessor; provided, however, that the reference to “Landlord” in the fourth line of Section 2.3(b) shall mean both Master Lessor and Sublessor, and provided further,
however, that if parking is reduced by Master Lessor under the Master Lease, Sublessee’s parking shall only be reduced on a pro-rata basis; 
  
 Sections 4.2 through 4.4, except that (i) references to “Landlord” in subsection (ii) in Section 4.2.1, Sections 4.2.2, 4.2.4, 4.2.6,
4.2.7, 4.2.8, 4.2.9 and the last paragraph of Section 4.2 shall mean only Master Lessor, and (ii) the fifth, sixth and seventh sentences of Section 4.2.1 hereby are deleted, and except that the first paragraph of Section 4.2 is deleted in its
entirety (except that the definition of “Expenses” shall be as defined therein), and except that Sublessee’s payment obligations with respect to the items enumerated in such Section shall be in accordance with the terms of this
Sublease; 
  
 Section 4.6; 
  
 Articles 5 and 6, except that (i) references to “Landlord”
in Section 5.2(b) shall mean only Master Lessor, and (ii) references to “Landlord” in the first sentence of Section 5.1 shall mean only Sublessor, except that Sublessee’s payment obligations with respect to the items listed in Section
5.1 shall be in accordance with the terms of this Sublease and nothing herein shall be deemed to release Sublessee from its obligations to pay its own telephone, telecommunications and data costs, fees, charges and expenses as set forth in Paragraph
4.B. above; 
  

 13. 

 Article 9, except that (i) references to “Landlord” in the second, fifth and ninth
sentences of Section 9.3 shall mean only Master Lessor; (ii) references in Section 9.2(a) to “Landlord” shall mean only Master Lessor, and (iii) references in Section 9.2(b)(l) to “Tenant” shall mean Sublessor and Sublessee,
except that the obligations to pay costs as set forth in such subsection shall be the obligation of Sublessor unless the cost is a result of any improvements or alterations made or proposed to be made by Sublessee; 
  
 Articles 11 and 12, except that (i) Section 11.1 hereby is deleted in
its entirety; (ii) the last phrase of the first sentence of Section 11.2 (beginning with “and (B) all Tenant improvements. . .”) and the second sentence of Section 11.2 hereby are deleted; (iii) the reference in Section 12.2 to
“Thirty Thousand Dollars ($30,000.00)” shall be revised to read “Ten Thousand Dollars ($10,000.00)”, (iv) the reference in Section 12.2 to “Two Hundred Thirty Thousand Dollars ($230,000.00)” shall be revised to read
“Twenty Thousand Dollars ($20,000.00)”, and (v) the last two sentences of Section 12.6 hereby are deleted; 
  
 Article 13, except that (i) references to “Tenant” in Section 13.1 shall mean only Sublessor (except for Sublessee’s signage, if
any, which shall be the sole responsibility of Sublessee), and except that Sublessee’s payment obligations with respect to the items listed in Section 13.1 shall be in accordance with the terms of this Sublease, and (ii) references to
“Landlord” in Section 13.2 and in the second, third and fourth sentences of Section 13.3 shall mean only Master Lessor; 
  
 Articles 14 through 16, except that (i) references to “Landlord” in Article 14 shall mean only Master Lessor, and (ii) the phrase
“including, without limitation, the covenant set forth in Paragraph 9.2(a) above” in Section 16.1 hereby is deleted; 
  
 Articles 17 through 20; 
  
 Article 21, except that (i) references to “Landlord” in Sections 21.1, 21.2, 21.3, 21.4 and 21.6 shall mean only Master Lessor, and (iii)
Sublessee shall not exercise the termination right provided by Section 21.4 without the prior written consent of Sublessor, which shall not be unreasonably withheld or delayed; 
  
 Article 22, except that (i) references to “Landlord” in Article 22 shall mean only Master Lessor, and (ii)
Sublessee shall not exercise the termination right provided by Section 22(a) without the prior written consent of Sublessor, which shall not be unreasonably withheld or delayed; 
  
 Articles 23 through 26, except that (i) references in Section 24(i) to “Paragraph 7” of the Master Lease
shall mean Paragraph 5 of this Sublease, and (ii) Section 24(o) hereby is deleted; 
  
 Section 27.2; 
  
 Articles 28 through 31, except that (i) references to “Landlord” in Articles 29 and 31 shall mean only Master Lessor, and (ii) references in Article 28 to “Tenant’s Property” shall mean Sublessee’s
personal property located in the Building, excluding the Furniture and Equipment (as described in Paragraph 30.B. below; 
  

 14. 

 Article 32, except that (i) the references in Article 32 to “Exhibit E” shall be deemed
a reference to Exhibit G attached hereto, (ii) the last two sentences of Section 32.3 shall mean only Master Lessor and (iii) references in Section 32.11 to “Landlord” shall mean only Master Lessor; 
  
 Article 33, but only for purposes of sending notices to Master Lessor;
 
  
 Article 34; 
  
 Articles 36 and 37, except that references to “Landlord” in
Section 36.2 shall mean only Master Lessor; 
  
 Articles 39
through 42, except that (i) references to “Landlord” in Articles 39 and 42 shall mean only Master Lessor, and (ii) references to “Landlord” in Article 41 shall mean only Master Lessor; provided, however, that the reference in
the third sentence of Article 41 shall mean both Master Lessor and Sublessor; 
  
 Articles 44 through 48; 
  
 Article 50, except that (i) references to “Landlord” in the second sentence of Section 50.1 shall mean only Master Lessor, and (ii) Sublessor shall exercise the rights set forth in Article 50 on a non-discriminatory basis;
and 
  
 Exhibits A-2, the second sentence of Exhibit C, and
Exhibits D, E and F (except that the reference to “Tenant” in Exhibit F shall mean only Sublessor). 
  
 B. Assumption of Obligations. This Sublease is and at all times shall be subject and subordinate to the Master Lease and the rights
of Master Lessor thereunder. Sublessee hereby expressly assumes and agrees: (i) to comply with all provisions of the Master Lease with respect to the Subleased Premises during the Term to the extent incorporated herein; (ii) to perform all the
obligations on the part of the “Tenant” to be performed under the terms of the Master Lease with respect to the Subleased Premises during the Term to the extent incorporated herein; and (iii) to hold Sublessor free and harmless of and from
all liability, judgments, costs, out-of-pocket damages (excluding punitive or consequential damages [i.e., lost profits, lost business opportunity]), claims, demands, and expenses (including reasonable attorneys’ and experts’ fees) arising
out of Sublessee’s failure to comply with or to perform Sublessee’s obligations hereunder or the obligations of the “Tenant” under the Master Lease as herein provided, or to act or omit to act in any manner which will constitute
a breach of the Master Lease. The foregoing indemnification shall survive the termination of this Sublease. 
  
 C. Sublessor’s Obligations. Sublessor hereby agrees to maintain the Master Lease in force during the entire Term of this
Sublease, and to pay rent to Master Lessor in accordance with the terms of the Master Lease, subject, however, to any earlier termination of the Master Lease without the fault of Sublessor. Sublessor promptly shall deliver to Sublessee copies of all
notices, demands and requests, including notices of default, that Sublessor may receive under the Master Lease. Sublessor represents and warrants to Sublessee that the Master Lease is in full force and effect, and that no default or event that, with
the passing of time or the giving of notice or both, would constitute a default, exists on the part of Sublessor, or, to the best 
  

 15. 

 
of Sublessor’s actual knowledge, the Master Lessor. Sublessor shall not voluntarily terminate, amend or modify the Master Lease in such a manner as to
materially adversely affect Sublessee’s use of the Subleased Premises or materially increase the obligations or materially diminish the rights of Sublessee hereunder, without the prior written consent of Sublessee, which shall not be
unreasonably withheld or delayed. 
  
 25.
CONDITION PRECEDENT. The Commencement Date and Sublessor’s and Sublessee’s rights and obligations hereunder are conditioned upon receipt by Sublessor of Master Lessor’s written consent to this
Sublease, in form and content reasonably acceptable to Sublessor and Sublessee. Sublessee shall provide to Master Lessor all financial and other information requested by Master Lessor pursuant to Article 23 of the Master Lease. If Sublessor fails to
obtain the Master Lessor’s consent within fifteen (15) days after the date on which Sublessor delivers to Master Lessor a copy of this Sublease executed by Sublessor and Sublessee, then Sublessee may terminate this Sublease by giving Sublessor
five (5) days’ prior written notice, in which case this Sublease shall terminate on the day following the last day of the five (5) day notice period (unless Master Lessor’s consent is obtained and Sublessor delivers the Subleased Premises
during such five (5)- day period, in which case this Sublease shall remain in full force and effect), neither party shall have any further rights or obligations hereunder and Sublessor shall return to Sublessee the Letter of Credit and all sums paid
by Sublessee to Sublessor in connection with Sublessee’s execution hereof. If Sublessee has not exercised its termination right as set forth in this Paragraph and Sublessor has not obtained the Master Lessor’s consent within forty-five
(45) days after the date on which Sublessor delivers to Master Lessor a copy of this Sublease executed by Sublessor and Sublessee, Sublessor shall have the right to terminate this Sublease by giving Sublessee written notice, in which case this
Sublease shall terminate as of the date of Sublessor’s written notice, neither party shall have any further rights or obligations hereunder and Sublessor shall return to Sublessee the Letter of Credit and all sums paid by Sublessee to Sublessor
in connection with Sublessee’s execution hereof. The return of the Letter of Credit and all sums paid by Sublessee to Sublessor shall be Sublessee’s sole and exclusive remedy in the event of a termination pursuant to the foregoing
sentence. 
  
 26. NO OFFER.
Submission of this Sublease for examination or signature by Sublessee does not constitute a reservation of, option for or option to sublease, and such submission is not effective as a sublease or otherwise until execution and delivery hereof by both
Sublessor and Sublessee, subject, however, to the provisions of Paragraph 25 above. 
  
 27. SUBLESSEE’S FINANCIAL STATEMENTS. Not more than once each calendar year during the Term, Sublessee shall provide to Sublessor, within ten
(10) days after receipt of Sublessor’s written request therefor, Sublessee’s year-end audited financial statements, prepared in accordance with generally accepted accounting principles. Sublessor shall keep such financial statements
confidential except to the extent it is necessary to provide such information to its third party accountants or attorneys in the normal course of Sublessor’s business, and require such third party accountants or attorneys to keep the same
confidential, or when Sublessor is required to release, such information by a court of competent jurisdiction or by applicable law. 
  
 28. HOLDING OVER. No right to hold over in the Premises is granted hereby. If Sublessee remains in possession of the
Subleased Premises or any part thereof after the 

  

 16. 

 
expiration of the Term hereof with the prior consent of Sublessor and Master Lessor, such occupancy shall be a tenancy from month-to-month upon all the
provisions of this Sublease pertaining to the obligations of Sublessee, except that Monthly Base Rent shall be increased to an amount equal to the greater of 150% of the Monthly Base Rent paid during the last month of the Term and the then-fair
market value of the Subleased Premises, and any other sums due hereunder shall be due and payable in the amount and at the time specified in this Sublease. If Sublessee holds over in the Subleased Premises after the expiration or sooner termination
of the Term of this Sublease without the prior written consent of Sublessor and Master Lessor, such occupancy shall be a tenancy at sufferance upon all the provisions of this Sublease, except that Monthly Base Rent shall increase to an amount equal
to the greater of 200% of the Monthly Base Rent paid during the last month of the Term and the then-fair market value of the Subleased Premises, all other sums due under this Sublease shall remain due and payable and Sublessee shall indemnify,
defend, protect and hold harmless Sublessor and Master Lessor from and against any and all claims for damages as the result of the failure of Sublessee to surrender the Subleased Premises in the condition required by this Sublease upon the
expiration or sooner termination of the Term of this Sublease, including, without limitation, claims made by any succeeding tenant or subtenant. The foregoing indemnification shall survive the expiration or earlier termination of this Sublease.

  
 29. COUNTERPARTS; FACSIMILE
SIGNATURES. This Sublease may be executed in counterparts, each of which, when taken together as a whole, shall constitute one (1) original document. Facsimile signature pages are acceptable. 
  
 30. EXPENSE, FURNITURE,
SERVICES REIMBURSEMENTS. 
  
 A. Expense Reimbursement. Notwithstanding anything to the contrary contained in this Sublease or the Master Lease, Sublessor shall provide to Sublessee and perform during the Term all services and repairs and
maintenance relating to Sublessee’s use of the Subleased Premises, including, without limitation: (i) water, sewer use, sewer discharge fees, gas, heat, air conditioning, ventilation, electricity, refuse pick-up, janitorial service (including,
without limitation, exterior and interior window washing) and all other utilities serving the Subleased Premises; (ii) all building service contracts; (iii) maintenance and repair of the Subleased Premises; (iv) other facilities expenses not
included in the foregoing; and (v) provision of payment of personal property taxes and insurance to the extent not the obligation of Sublessee pursuant to Paragraph 4.B. above. Sublessee shall reimburse to Sublessor as Additional Sublease Rent a
portion of the costs relating to the above, and such sums herein are defined as the “Expense Reimbursement”. Sublessee’s monthly Expense Reimbursement during the Term shall equal $1.29 per rentable square foot of the Subleased
Premises per month, or $13,566.61, which Expense Reimbursement shall be paid by Sublessee to Sublessor each month during the Term at the time that Monthly Base Rent is due and payable. 
  
 B. Furniture, Equipment Reimbursement. Notwithstanding anything to the contrary contained in this
Sublease or the Master Lease, during the Term of this Sublease, Sublessee, shall be permitted to use the furniture and other personal property (“Furniture”) currently located in the Subleased Premises and more particularly described on
Exhibit D attached hereto and incorporated by reference herein, as well as all of the equipment (“Equipment”) currently located in the Subleased Premises and more particularly described on 

  

 17. 

 
Exhibit D. Except as otherwise set forth herein, Sublessor makes no representation or warranty of any kind with respect to the Furniture or the
Equipment, including, without limitation, the condition or fitness of the Furniture or the Equipment for Sublessee’s proposed or actual use thereof, provided, however, that Sublessor does hereby represent and warrant that it has the right to
lease the Equipment and the Furniture to Sublessee during the Term of this Sublease. If Sublessor encumbers the Furniture or the Equipment to an equipment lease during the Term, Sublessor first shall obtain the consent of the equipment lessor to the
provisions of this Paragraph, and Sublessee shall execute all documents reasonably required by the equipment lessor as a condition to its consent. Sublessor shall fulfill all of its obligations under any equipment lease. Sublessor hereby represents
and warrants that the Equipment and the Furniture are in good condition and repair as of the Commencement Date, and during the Term Sublessor shall repair and maintain the Equipment and the Furniture as set forth in Paragraph 31 below. Sublessee
shall surrender the Furniture and the Equipment to Sublessor on the Expiration Date in the condition and location received, normal wear and tear, damage by casualty and condemnation and obligations of Sublessor under this Sublease excepted.

  
 In consideration for the use of the Furniture and the
Equipment, Sublessee shall reimburse to Sublessor as Additional Sublease Rent on a monthly basis during the Term a Furniture and Equipment reimbursement (collectively, “Furniture Reimbursement”) in the amount of $0.64 per rentable square
foot of the Subleased Premises per month, or $6,725.76, which Furniture Reimbursement shall be paid by Sublessee to Sublessor each month during the Term at the time that Monthly Base Rent is due and payable. 
  
 C. Services Reimbursement. Notwithstanding anything
to the contrary contained in this Sublease or the Master Lease, Sublessor shall provide to Sublessee during the Term all of the services more particularly described on Exhibit E attached hereto and incorporated by reference herein
(“Services”) in sufficient quantities and quality as may be mutually agreed to by the parties from time to time for Sublessee’s use of and business operations within the Subleased Premises. Sublessee shall reimburse to Sublessor as
Additional Sublease Rent a portion of the costs relating to the Services, and such reimbursement is defined herein as the “Services Reimbursement”. Sublessee’s monthly Service Reimbursement during the Term shall equal $0.25 per
rentable square foot of the Subleased Premises per month, or $2,627.25, which Expense Reimbursement shall be paid by Sublessee to Sublessor each month during the Term at the time that Monthly Base Rent is due and payable. 
  
 D. Reimbursements. The Expense Reimbursement, the
Furniture Reimbursement and the Services Reimbursement shall be referred to in this Sublease from time to time as the “Reimbursements”. 
  
 31. MAINTENANCE AND REPAIR OF SUBLEASED PREMISES,
FURNITURE, EQUIPMENT. Notwithstanding anything to the contrary contained in the Master Lease or this Sublease, all maintenance and repair of the Subleased Premises (including water systems, vacuum pumps, air lines,
CAT5 wiring and telecommunications lines serving the Subleased Premises), when the need for maintenance and/or repair is required and is not otherwise the obligation of Master Lessor under the Master Lease, shall be the obligation of Sublessor
pursuant to the terms of the Master Lease (except for Sublessee’s signage, as set forth in Paragraph 32 below). Sublessor shall maintain the Furniture and Equipment in good condition 

  

 18. 

 
and repair, including the making of any replacements thereto as may be required in Sublessor’s reasonable discretion. Sublessee shall so notify
Sublessor in writing of the need for maintenance or repair of the Subleased Premises, the Furniture or the Equipment, and Sublessor shall perform such maintenance and/or repair within a reasonable time. Notwithstanding the foregoing sentence,
Sublessor shall use diligent good faith efforts to perform any maintenance or repairs required by this Paragraph in accordance with the timing and standards with which Sublessor performs its own maintenance and repairs. With respect to the Furniture
or the Equipment, Sublessor shall perform maintenance pursuant to any ongoing maintenance contracts with licensed professionals, and shall perform any required repairs promptly so as to minimize any interruption in Sublessee’s business
operations. The costs for maintenance and repairs of the Subleased Premises, the Furniture and the Equipment shall be included in the Expense Reimbursement payable by Sublessee pursuant to Paragraph 30 above. In no event shall Sublessor be required
to maintain or repair the Subleased Premises (including, without limitation, the water systems, vacuum pumps, air lines, CAT5 wiring and telecommunication lines serving the Subleased Premises), or maintain, repair and/or replace the Furniture or the
Equipment, when the need for such maintenance, repair and/or replacement is the result of any negligence, willful misconduct or omission of Sublessee, its agents, employees, contractors, sublessees or assignees, the maintenance, repair and/or
replacement with respect to which shall be the sole obligation of Sublessee. If Sublessor shall fail to provide any of the Services required to be provided by Paragraph 30 above or to perform any of the maintenance and repairs of the Subleased
Premises, the Furniture or the Equipment required under this Paragraph, for a period of five (5) consecutive business days after receipt of written notice from Sublessee, and such failure is due solely to the negligence or willful misconduct of
Sublessor, then notwithstanding any other provision of this Sublease or the Master Lease to the contrary, the Rent hereunder shall be abated until the maintenance or repair has been completed in a proportion equal to the damage caused to Sublessee
by such failure, as reasonably determined (with reasonable supporting documentation in connection therewith) by Sublessee. 
  
 32. SIGNAGE. Subject to obtaining the prior written approval of Master Lessor and Sublessor, Sublessee, at Sublessee’s sole
cost and expense, shall be entitled to Sublessee’s Share of the signage permitted by Article 18 of the Master Lease. 
  
 33. COMMON AREA RECEPTION. Sublessor and Sublessee acknowledge and agree that both parties anticipate
using the existing reception area located on the ground floor of the Premises as a common area, accessible to both parties. In addition, Sublessor shall provide either a receptionist or a security guard to be located in the reception area. Sublessee
shall pay to Sublessor Sublessee’s Share of the start-up and monthly costs arising out of Sublessor’s hiring of the receptionist or security guard as Additional Sublease Rent within twenty (20) days after receipt of Sublessor’s
invoices therefor. 
  
 34. HAZARDOUS
MATERIALS. Sublessee may store and use on the Subleased Premises, in accordance with the provisions of Article 32 of the Master Lease, the Hazardous Materials identified on the Hazardous Materials Disclosure Certificate to be
prepared and executed by Sublessee in the form attached hereto as Exhibit G and incorporated by reference herein, so long as consent to the storage and use of such Hazardous Materials by Sublessee has been granted in writing by Sublessor and
Master Lessor. Sublessee shall provide an executed 

  

 19. 

 
copy of the completed Hazardous Materials Disclosure Certificate to Sublessor not later than the date of execution of this Sublease by Sublessee. 

 
 A. Sublessee’s Indemnification. In
addition to Sublessee’s other indemnity obligations under this Sublease, Sublessee shall protect, indemnify, defend upon demand with counsel reasonably acceptable to Sublessor, and hold harmless Sublessor and Master Lessor and their respective
officers, directors, employees, agents, successors and assigns from and against any and all liabilities, losses, claims, actual out-of-pocket damages (excluding punitive and consequential damages [i.e., lost profits, lost business opportunity]),
interest, penalties, fines, monetary sanctions, attorneys’ fees, experts’ fees, court costs, remediation costs, investigation costs, and other expenses to the extent caused by the use, storage, treatment, transportation, release, or
disposal of Hazardous Materials on or about the Premises, the Building or the Project by Sublessee or Sublessee’s agents, employees, contractors, sublessees, assignees or licensees. 
  
 B. Sublessor’s Indemnification. Sublessor shall protect, indemnify, defend upon demand with
counsel reasonably acceptable to Sublessee, and hold harmless Sublessee and its officers, directors, employees, agents, successors and assigns from and against any and all liabilities, losses, claims, actual out-of-pocket damages [excluding punitive
and consequential damages [i.e., lost profits, lost business opportunity]), interest, penalties, fines, monetary sanctions, attorneys’ fees, experts’ fees, court costs, remediation costs, investigation costs, and other expenses to the
extent caused by the use, storage, treatment, transportation, release, or disposal of Hazardous Materials on or about the Premises, the Building or the Project by Sublessor or Sublessor’s agents, employees, contractors, successors, assignees or
licensees. 
  
 C. Survival. The foregoing
indemnifications shall survive the expiration or earlier termination of this Sublease. 
  
 D. Sublessee’s Responsibility. Except to the extent that the Hazardous Material in question was released, emitted, used,
stored, manufactured, transported or discharged on, in, under or about the Premises, the Building or the Project by Sublessee, or its agents, employees, contractors, sublessee, assignees or licensees, Sublessee shall not be responsible for costs or
liabilities with respect to any Hazardous Material present on or about the Premises, the Building or the Project. 
  
 35. TELEPHONE SOFTWARE. On or prior to the Commencement Date, Sublessor shall install in the Subleased Premises
partitioning software (“Software”) to enable Sublessee to use Sublessor’s existing telephone system. Sublessee shall use reasonable efforts to minimize interference with Sublessee’s business operations in installing the Software.
The Software shall be installed in compliance with the provisions of the Master Lease and all applicable law, in a good and workmanlike manner, free of defects and using materials and equipment of good quality. Upon the execution of this Sublease by
Sublessee, Sublessee shall pay to Sublessor the sum of $13,500.00 to reimburse Sublessor for the cost of installing the Software. Sublessee shall use Sublessor’s telephone consultants so as to minimize interference with Sublessor’s
existing telephone system. Sublessor shall have the right to shut the telephone system down for maintenance and upgrades, but Sublessor shall provide prior notice to Sublessee of any scheduled maintenance or upgrade. Sublessor shall not be liable in
any manner to Sublessee if 

  

 20. 

 
the telephone system goes down or service is interrupted under any circumstances beyond the reasonable control of Sublessor, but Sublessor shall use diligent
good faith efforts to reestablish service in accordance with the timing and standards with which Sublessor works to reestablish its own telephone service. Notwithstanding anything to the contrary contained in this Paragraph, Sublessee shall be
responsible for payment of all telephone costs, charges, fees and expenses to the provider as set forth in Paragraph 4.B. above. 
  
 36. T-1 LINE. Not later than the Commencement Date, Sublessor shall provide Sublessee with a temporary connection to its T-1 line.
Sublessee shall be responsible for providing the required trunk lines. Also not later than the Commencement Date, Sublessee shall order its own T-1 line. In connection with its temporary use of Sublessor’s T-1 line, Sublessee shall use
Sublessor’s network consulting group, Clarke Consulting, LLC, and shall comply with SBC/Pacific Bell internet usage guidelines so as not to interfere with Sublessor’s use of its T-1 line. At the time that Sublessee pays Monthly Base to
Sublessor, Sublessee shall pay to Sublessor as Additional Sublease Rent the sum of $1,000.00 for each month that Sublessee uses Sublessor’s T-1 line (prorated on the basis of a thirty (30)- day month). Sublessee also shall pay to Sublessor,
within twenty (20) days after receipt of Sublessor’s invoice(s) therefor, the cost of the labor actually incurred by Sublessor in relocating and programming the T-1 line for Sublessee’s temporary use. Except where caused by the gross
negligence or willful misconduct of Sublessor, Sublessee shall indemnify, protect, defend and hold Sublessor harmless of and from all liability, judgments, costs, damages (excluding punitive but including consequential damages [i.e., lost profits,
lost business opportunity]), claims, demands, and expenses (including reasonable attorneys’ and experts’ fees) arising out of Sublessee’s use of Sublessor’s T-1 line. Sublessee shall have the right to terminate the use of
Sublessor’s T-1 line at any time by providing prior notice of such termination to Sublessor. 
  
 37. SUBLESSEE’S EQUIPMENT FINANCING. Sublessor acknowledges that Sublessee may
enter with a third party an equipment lease or similar arrangement relative to Sublessee’s personal property (excluding the Furniture and the Equipment) to be located on the Subleased Premises. Sublessor waives any and all rights, title and
interest Sublessor now has, or hereafter may have, whether statutory or otherwise, to Sublessee’s personal property (“Collateral”) located at the Subleased Premises. Sublessor acknowledges that Sublessor has no lien, right, claim,
interest or title in or to the Collateral. Sublessor further agrees that Sublessee shall have the right, at its reasonable discretion, to mortgage, pledge, hypothecate or grant a security interest in the Collateral as security for its obligations
under any equipment lease or other financing arrangement related to the conduct of Sublessee’s business at the Subleased Premises. Sublessor further agrees to execute and deliver within ten (10) business days after receipt by Sublessor any
reasonable documentation (as determined in Sublessor’s sole but reasonable discretion) reasonably required by Sublessee’s equipment lessor to be executed by Sublessor in connection with any such lease or financing arrangement, setting
forth that Sublessor waives, in favor of such party, any superior lien, claim, interest or other right in the Collateral. Sublessee shall indemnify, protect, defend and hold Sublessor free and harmless of and from all liability, judgments, costs,
damages (excluding punitive damages and consequential damages [i.e., lost profits, lost business opportunity]), claims, demands, and expenses (including reasonable attorneys’ and experts’ fees) with respect to the Furniture and/or
Equipment arising out of any equipment lease or similar financing arrangement entered by Sublessee. 
  

 21. 

 IN WITNESS WHEREOF, Sublessor and
Sublessee have caused this Sublease to be executed by their duly authorized representatives as of the day and year first above written. 
  

			
	SUBLESSOR:
	
	THERAVANCE, INC., a Delaware corporation
		
	By:	 	 /s/    MARTY GLICK

	 	 	

	Its:	 	CFO

  
 SUBLESSOR’S ADDRESS FOR
NOTICES AND RENT: 
  
 Theravance, Inc. 
 901 Gateway Boulevard 
 South San Francisco, California 94080 
 Attention: Marty Glick 
  

			
	SUBLESSEE:
	
	THRESHOLD PHARMACEUTICALS, INC.,
	
	 a Delaware corporation

		
	By:	 	 /s/    GEORGE F. TIDMARSH

	 	 	

	Its:	 	 President

  
 SUBLESSEE’S ADDRESS FOR
NOTICES: 
  
 Prior to the Commencement Date: 
 Threshold Pharmaceuticals, Inc. 
 849 Mitten Road, Suite 104 
 Burlingame, California 94010 
 Attention: Dr. George Tidmarsh 
  
 After the Commencement Date: 
 At the Subleased Premises 
  

 22. 

 EXHIBIT A 
  
 MASTER LEASE 
  
 [See exhibit 10.5 to form S-1] 
  

 23. 

 EXHIBIT B 
  
 SUBLEASED PREMISES 
  

 24. 

 

 
  
 Exhibit B 

 
 [AREA 3b] 
  

 EXHIBIT C 
  
 CHEMISTRY HOODS TO BE REMOVED 
  

 25. 

 * Hood to be removed and replaced with lab benches 
  
 

 
  
 Exhibit C

  

 EXHIBIT D 
  
 FURNITURE AND EQUIPMENT 
  
 951 chemistry space inventory 
  
 Lab space. 

	3	Glassware cabinets. 

	1	20 Walk-in. 

	6	10ft fume hoods. 

	3	6ft fume hoods. 

  
 Office space. 

	13	scientist offices. 

	2	V.P. offices. 

	1	Conference room 

	3	Cubicles. 

	2	4 drawer file cabinets. 

  
 Scientist Office: 
 Modular office furniture with white board, 1 desk chair, 1 guest chair, and a 4 drawer
file cabinet. 
  
 V.P. Office: 
 Modular office furniture with white board, 1 desk chair, and 2 guest chairs. 
  
 Conference Room: 
 Conference
room table, 10 chairs, glass white board, drop down projector screen. 
  
 Cubicle:

 Modular office furniture with white board and 1 desk chair. 
  

 26. 

 EXHIBIT E 
  
 SERVICES PROVIDED TO SUBLEASED PREMISES 
  

	 	•	Glassware service includes up to two pick-ups and two deliveries per day, based on need. Dirty glassware will be picked up from designated locations and delivered to clean glassware
cabinets. 

  

	 	•	Uninterruptible power supply at existing locations. 

  

	 	•	Emergency power at existing locations. 

  

	 	•	Chemical waste pick up, and consolidation. Up to twice a day, depending on need. This includes delivery of new receptacles in labs and managing the waste stream.

  
 This does not include the expense of the disposal. This contract
will need to be carries by Sublessee with waste disposal contractor. 
  

	 	•	Biowaste pick up and consolidation. Up to twice a day, depending on need. The contract for the disposal shall be carried by the Sublessee, and cost of disposal is the responsibility
of the Sublessee. 

  

	 	•	Nitrogen gas is supplied; all other gases are to be purchased by sub-tenant. We will change out the gas cylinders as needed / requested by sub-tenant. We will provide a storage area
for the gas cylinders. 

  

	 	•	Facilities management. 

  

	 	•	Telephone lines 

  

	 	•	DI water system 

  

	 	•	Vacuum pumps 

  

	 	•	Compressed Air 

  

	 	•	CAT5 wiring for computer network 

  

 27. 

 EXHIBIT F 
  
 RENT AND REIMBURSEMENTS SUMMARY 
  
 Months 1-12 – 10,509 Square Feet 
  

							
	 Category

	  	Per Square
Foot Per
Month

	  	Monthly
Payment

	 Monthly Base Rent:
	  	$	1.03	  	$	10,824.27
	 Sublessee’s Share:
	  	$	0.34	  	$	3,573.06
	 Expense Reimbursement:
	  	$	1.29	  	$	13,556.61
	 Furniture Reimbursement:
	  	$	0.64	  	$	6,725.76
	 Services Reimbursement:
	  	$	0.25	  	$	2,627.25
	 Totals:
	  	$	3.55	  	$	37,306.95

  
 Months 13-24 – 10,509 Square
Feet 
  

							
	 Category

	  	Per Square
Foot Per
Month

	  	Monthly
Payment

	 Monthly Base Rent:
	  	$	1.23	  	$	12,926.07
	 Sublessee’s Share:
	  	$	0.34	  	$	3,573.06
	 Expense Reimbursement:
	  	$	1.29	  	$	13,556.61
	 Furniture Reimbursement:
	  	$	0.64	  	$	6,725.76
	 Services Reimbursement:
	  	$	0.25	  	$	2,627.25
	 Totals:
	  	$	3.75	  	$	39,408.75

  

 28. 

 EXHIBIT G 
  
 HAZARDOUS MATERIALS DISCLOSURE STATEMENT 
  
 Your cooperation in this matter is appreciated. Initially, the information provided by you in this Hazardous Materials
Disclosure Certificate is necessary for the Sublessor and Master Lessor to evaluate your proposed uses of the premises (the “Premises”) and to determine whether enter into and consent to, as applicable, a sublease lease agreement
with you as Sublessee. If a sublease agreement is signed by you and Sublessor (the “Sublease Agreement”), on an annual basis in accordance with the provisions of Paragraph 32 of the Master Lease Agreement, you are to provide an
update to the information initially provided by you in this certificate. Any questions regarding this certificate should be directed to, and when completed, the certificate should be delivered to: 
  

			
	 Sublessor:
	  	 Theravance, Inc.
 901 Gateway Boulevard
 So. San Francisco, California 94080
 Phone: (650) 808-6000

		
	 Master Lessor:
	  	 ______________________________

	 	  	 ______________________________

	 	  	 ______________________________

  
 Name of (Prospective)
Sublessee: Threshold Pharmaceuticals, Inc. 
  
 Mailing Address:
849 Mitten Rd, Suite 104 
                              Burlingame, CA 94010 
  

			
	 Contact Person, Title and Telephone Number(s):
	  	 George Tidmarsh, MD, PhD
 President and Founder
 650-259-1701

  
 Contact Person for
Hazardous Waste Materials Management and Manifests and Telephone 
 Number(s):    Linda DeYoung, Ph.D. 
                       VP, Development

                       650-259-1702 
  

			
	 Address of (Prospective) Premises:
	  	 951 Gateway Boulevard
 South San Francisco, CA 94080

	
	 Length of (Prospective) initial Term: 24 months

  

 1 

	1.	GENERAL INFORMATION: 

  
 Describe the proposed operations to take place in, on, or about the Premises, including, without limitation, principal products processed,
manufactured or assembled, and services and activities to be provided or otherwise conducted. Existing subtenants should describe any proposed changes to on-going operations. 
  

			
	 	 	Research and Development
	 	 	

	 	 	 
	 	 	

  

	2.	USE, STORAGE AND DISPOSAL OF HAZARDOUS MATERIALS 

  

	 	2.1	Will any Hazardous Materials (as hereinafter defined) be used, generated, treated, stored or disposed of in, on or about the Premises? Existing subtenants should describe any
Hazardous Materials which continue to be used, generated, treated, stored or disposed of in, on or about the Premises. 

  

					
	Wastes	  	Yes x	 	 No  ̈

			
	Chemical Products	  	Yes x	 	 No  ̈

			
	Other	  	Yes x	 	 No  ̈

  
 If Yes is marked,
please explain: Small volumes of hazardous materials will be used in research-scale synthetic chemistry and tissue culture experiments. Small volumes of waste will be generated . 14C, 3H, 1231, 125I, 131I, 111In, 3SS and 32P isotopes, in non-volatile form, will be used in research experiments (<50mCi total). 
  

	 	2.2	If Yes is marked in Section 2.1, attach a list of any Hazardous Materials to be used, generated, treated, stored or disposed of in, on or about the Premises, including the
applicable hazard class and an estimate of the quantities of such Hazardous Materials to be present on or about the Premises at any given time; estimated annual throughput; the proposed location(s) and method of storage (excluding nominal amounts of
ordinary household cleaners and janitorial supplies which are not regulated by any Environmental Laws, as hereinafter defined); and the proposed location(s) and method(s) of treatment or disposal for each Hazardous Material, including the estimated
frequency, and the proposed contractors or subcontractors. Existing subtenants should attach a list setting forth the information requested above and such list should include actual data from on-going operations and the identification of any
variations in such information from the prior year’s certificate. 

  

	3.	STORAGE TANKS AND SUMPS 

  

	 	3.1	 Is any above or below ground storage or treatment of gasoline, diesel, petroleum, or 

  

 2 

	 	 
other Hazardous Materials in tanks or sumps proposed in, on or about the Premises? Existing subtenants should describe any such actual or proposed
activities. 

  
 Yes  ̈              No x 
  
 If yes, please
explain:______________________________________________________________________ 
  
 ________________________________________________________________________________________ 
  
 ________________________________________________________________________________________ 
  

	4.	WASTE MANAGEMENT 

  

	 	4.1	Has your company been issued an EPA Hazardous Waste Generator I.D. Number? Elxisting subtenants should describe any additional identification numbers issued since the previous
certificate. 

  
 Yes x              No  ̈ 
  

	 	4.2	Has your company filed a biennial or quarterly reports as a hazardous waste generator? Existing subtenants should describe any new reports filed. 

  
 Yes  ̈              No x 
  
 If yes, attach a copy of the most recent report filed. 
  

	5.	WASTEWATER TREATMENT AND DISCHARGE 

  

	 	5.1	Will your company discharge wastewater or other wastes to: 

  
  ̈ storm drain?
                x sewer? 
  
  ̈ surface water?
              ̈ no wastewater or other wastes discharged. 
  
 Existing subtenants should indicate any actual discharges. If so, describe
the nature of any proposed or actual discharge(s). 
  

	 	5.2	Will any such wastewater or waste be treated before discharge? 

  
 Yes  ̈
             No x 
  
 If yes, describe the type of treatment proposed to be conducted. Existing subtenants should describe the actual treatment conducted. 
  
 ________________________________________________________________________________________ 
  
 ________________________________________________________________________________________ 
  

 3 

	6.	AIR DISCHARGES 

  

	 	6.1	Do you plan for any air filtration systems or stacks to be used in your company’s operations in, on or about the Premises that will discharge into the air; and will such air
emissions be monitored? Existing subtenants should indicate whether or not there are any such air filtration systems or stacks in use in, on or about the Premises which discharge into the air and whether such air emissions are being monitored.

  
 Yes  ̈ No x 
  
 If yes, please describe: _______________________________________________________________________________ 
  
 __________________________________________________________________________________________________ 
  
 __________________________________________________________________________________________________ 
  

	 	6.2	Do you propose to operate any of the following types of equipment, or any other equipment requiring an air emissions permit? Existing subtenants should specify any such equipment
being operated in, on or about the Premises. 

  

			
	  ̈ Spray booth(s)
	  	 ̈ Incinerator(s)
	  ̈ Dip tank(s)
	  	 ̈ Other (Please describe)
	  ̈ Drying oven(s)
	  	x No Equipment Requiring Air Permits
	
	 If yes, please describe: _________________________________________________________________________

	 ___________________________________________________________________________________________

	 ___________________________________________________________________________________________

  

	 	6.3	Please describe (and submit copies of with this Hazardous Materials Disclosure Certificate) any reports you have filed in the past thirty-six months with any governmental or
quasi-governmental agencies or authorities related to air discharges or clean air requirements and any such reports which have been issued during such period by any such agencies or authorities with respect to you or your business operations.

  

	7.	HAZARDOUS MATERIALS DISCLOSURES 

  

	 	7.1	Has your company prepared or will it be required to prepare a Hazardous Materials management plan (“Management Plan”) or Hazardous Materials Business Plan and Inventory
(“Business Plan”) pursuant to Fire Department or other governmental or regulatory agencies’ requirements? Existing subtenants should indicate whether or not a Management Plan is required and has been prepared.

  

 4 

 Yes x No  ̈ 
  
 If yes, attach a copy of the Management Plan or Business Plan. Existing subtenants should attach a copy of any required updates to the Management Plan or Business Plan. In Process 
  

	 	7.2	Are any of the Hazardous Materials, and in particular chemicals, proposed to be used in your operations in, on or about the Premises listed or regulated under Proposition 65?
Existing subtenants should indicate whether or not there are any new Hazardous Materials being so used which are listed or regulated under Proposition 65. 

  
 Yes x No  ̈ 
  
 If yes, please explain:
acrylamide, chloroform, cisplatin, dichloromethane (methylene chloride), ethyleneimine, hydrazine sulfate, methyl iodide, mitomycin C, pyridine, radionuclides (when a license is obtained), streptozotocin (streptozocin), trypan blue (commercial
grade), aspirin, fluorouracil, paclitaxel, and streptomycin sulfate. 
  

	8.	ENFORCEMENT ACTIONS AND COMPLAINTS 

  

	 	8.1	With respect to Hazardous Materials or Environmental Laws, has your company ever been subject to any agency enforcement actions, administrative orders, or consent decrees or has
your company received requests for information, notice or demand letters, or any other inquiries regarding its operations? Existing subtenants should indicate whether or not any such actions, orders or decrees have been, or are in the process of
being, undertaken or if any such requests have been received. 

  
 Yes  ̈ No x 
  
 If yes, describe the actions, orders or decrees and any continuing compliance obligations imposed as a result of these
actions, orders or decrees and also describe any requests, notices or demands, and attach a copy of all such documents. Existing subtenants should describe and attach a copy of any new actions, orders, decrees, requests, notices or demands not
already delivered to Sublessor pursuant to the provisions of Paragraph 32 of the Master Lease Agreement. 
  
 ___________________________________________________________________________________________ 
  
 ___________________________________________________________________________________________ 
  
 ___________________________________________________________________________________________ 
  

	 	8.2	Have there ever been, or are there now pending, any lawsuits against your company regarding any environmental or health and safety concerns? 

  
 Yes  ̈ No x 
  

 5 

 If yes, describe any such lawsuits and attach copies of the complaint(s), cross-complaint(s), pleadings
and other documents related thereto as requested by Sublessor. Existing subtenants should describe and attach a copy of any new complaint(s), cross-complaint(s), pleadings and other related documents not already delivered to Sublessor pursuant to
the provisions of Paragraph 32 of the Master Lease Agreement. 
  
 ___________________________________________________________________________________________ 
  
 ___________________________________________________________________________________________ 
  
 ___________________________________________________________________________________________ 
  

	 	8.3	Have there been any problems or complaints from adjacent tenants, owners or other neighbors at your company’s current facility with regard to environmental or health and safety
concerns? Existing subtenants should indicate whether or not there have been any such problems or complaints from adjacent tenants, owners or other neighbors at, about or near the Premises and the current status of any such problems or complaints.

  
 Yes  ̈ No x 
  
 If yes, please describe. Existing subtenants should describe any such problems or complaints not already disclosed to Sublessor under the provisions of
the signed Sublease Agreement and the current status of any such problems or complaints. 
  

	9.	PERMITS AND LICENSES 

  

	 	9.1	Attach copies of all permits and licenses issued to your company with respect to its proposed operations in, on or about the Premises, including, without limitation, any Hazardous
Materials permits, wastewater discharge permits, air emissions permits, and use permits or approvals. Existing subtenants should attach copies of any new permits and licenses as well as any renewals of pen-nits or licenses previously issued.

  
 Permits will be sent in upon completion of
move and completion of forms. 
  
 As used herein, “Hazardous
Materials” shall mean and include any substance that is or contains (a) any “hazardous substance” as now or hereafter defined in § 10 1 (14) of the Comprehensive Environmental Response, Compensation, and Liability Act of 1980, as
amended (“CERCLA”) (42 U.S.C. § 9601 et seq.) or any regulations promulgated under CERCLA; (b) any “hazardous waste” as now or hereafter defined in the Resource Conservation and Recovery Act, as amended (“RCRA”)
(42 U.S.C. § 6901 et seq.) or any regulations promulgated under RCRA; (c) any substance now or hereafter regulated by the Toxic Substances Control Act, as amended (“TSCA”) (15 U.S.C. § 2601 et seq.) or any regulations promulgated
under TSCA; (d) petroleum, 

  

 6 

 
petroleum by-products, gasoline, diesel fuel, or other petroleum hydrocarbons; (e) asbestos and asbestos-containing material, in any form, whether friable or
non-friable; (f) polychlorinated biphenyls; (g) lead and lead-containing materials; or (h) any additional substance, material or waste (A) the presence of which on or about the Premises (i) requires reporting, investigation or remediation under any
Environmental Laws (as hereinafter defined), (ii) causes or threatens to cause a nuisance on the Premises or any adjacent property or poses or threatens to pose a hazard to the health or safety of persons on the Premises or any adjacent property, or
(iii) which, if it emanated or migrated from the Premises, could constitute a trespass, or (B) which is now or is hereafter classified or considered to be hazardous or toxic under any Environmental Laws; and “Environmental Laws” shall mean
and include (a) CERCLA, RCRA and TSCA; and (b) any other federal, state or local laws, ordinances, statutes, codes, rules, regulations, orders or decrees now or hereinafter in effect relating to (i) pollution, (ii) the protection or regulation of
human health, natural resources or the environment, (iii) the treatment, storage or disposal of Hazardous Materials, or (iv) the emission, discharge, release or threatened release of Hazardous Materials into the environment. 
  
 The undersigned hereby acknowledges and agrees that this Hazardous Materials
Disclosure Certificate is being delivered to Sublessor and Master Lessor in connection with the evaluation of a Sublease Agreement and, if such Sublease Agreement is executed, will be attached thereto as an exhibit. The undersigned further
acknowledges and agrees that if such Sublease Agreement is executed, this Hazardous Materials Disclosure Certificate will be updated from time to time in accordance with Paragraph 32 of the Master Lease Agreement. The undersigned further
acknowledges and agrees that the Sublessor and Master Lessor and their respective partners, lenders and representatives may, and will, rely upon the statements, representations, warranties, and certifications made herein and the truthfulness thereof
in entering into the Sublease Agreement and the continuance thereof throughout the term, and any renewals thereof, of the Sublease Agreement. I [print name] GEORGE TIDMARSH , acting with full authority to bind the (proposed) Sublessee and on behalf
of the (proposed) Sublessee, certify, represent and warrant that the information contained in this certificate is true and correct. 
  

			
	 (PROSPECTIVE) TENANT:

	
	 THRESHOLD PHARMACEUTICALS, INC.,
 a DELAWARE corporation

		
	By:	 	 /s/    GEORGE F. TIDMARSH

	 	 	

	 Title:
	 	 PRESIDENT AND FOUNDER

	 Date:
	 	 DECEMBER 05, 2002

  

 7 

			
	INITIALS:
	Sublessor:	 	 
	 	 	

		
	Sublessee:	 	GT

  

 8 

 Attachment for section 2.2 
 List of hazardous materials 
  
 Chemicals 
  
 The chemicals listed below (along with estimated
annual usage) will be stored in room 316 in chemical cabinets. Chemical wastes will be disposed of by Onyx Environmental. 
  

			
	Ether	  	50 L
	Acetonitrile	  	25 L
	Ethyl acetate	  	50 L
	Hexane	  	50 L
	Dimethylformammide	  	2L
	Methylene Chloride	  	50 L
	Methyl alcohol	  	20 L
	Ethyl alcohol	  	20 L
	1,4-Dioxane	  	1L
	Tetrahydrofuran	  	2L
		
	Hydrochloric acid (10M)	  	2L
	Trifluoroacetic acid	  	1L
		
	Ammonia	  	1L
	Triethylamine	  	1L
	Sodium Hydroxide (solid)	  	2Kg

  
 Biohazard Waste 
  
 We are using human tumor cell lines for experimental purposes. Solid waste material,
including pipets, tissue culture dishes, and cells will be temporarily stored on-site (in appropriately labeled waste containers), and will be routinely removed by Stericycle. The estimated annual throughput, based on current usage, is 1000 pounds.

  
 Radioactive Waste 
  
 We have applied for a radioactivity license which covers the usage of the following isotopes
with limits as listed: 14-Carbon (10 mCi), 3-Hydrogen (10 mCi), 131-Iodine (4 mCi), 125-Iodine (4 mCi), 123-Iodine (4 mCi), 111-Indium (4 mCi), 32-Phosphorus (10 mCi), and 35-SulfUr (10 mCi). Stock supplies of radioisotopes, and radioactive waste
will be stored in room 312. Liquid waste resulting from use of 14-Carbon and 3-Hydrogen will be disposed via POTW (publicly owned treatment works), in accordance with the State of California Department of Health Services radiologies guidelines.
Radioactive waste resulting from usage of isotopes with short half-lives (< 90 days) will be decayed on-site for seven half-lives. Other liquid and solid radioactive waste will be routinely picked up by PWN Environmental.

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