Document:

Cerberian, Inc. 2000 Stock Option Plan

 Exhibit 10.22 
 CERBERIAN, INC. 
 2000 STOCK OPTION PLAN 
 1. Purposes of the Plan. The purposes of this Stock Option Plan are to attract and retain the best available personnel for positions of
substantial responsibility, to provide additional incentive to Employees and Consultants of the Company and its Subsidiaries, and to promote the success of the Company’s business. Options granted under the Plan may be Incentive Stock Options
(as defined under Section 422 of the Code) or Nonstatutory Stock Options, as determined by the Administrator at the time of grant of an Option and subject to the applicable provisions of Section 422 of the Code, as amended, and the
regulations promulgated thereunder. 
 2. Definitions. As used herein, the following definitions shall apply: 
 (a) “Administrator” means the Board or its Committee appointed pursuant to Section 4 of the Plan. 
 (b) “Affiliate” means any entity other than a Subsidiary (as defined below) in which the Company owns an equity interest.

 (c) “Applicable Laws” means the legal requirements relating to the administration of stock plans under U.S. state
corporate laws, U.S. federal and state securities laws, the Code, any Stock Exchange, and the applicable laws of any other country or jurisdiction where Options are granted under the Plan. 
 (d) “Board” means the Board of Directors of the Company. 
 (e) “Change in Control” means a sale of all or substantially all of the Company’s assets, or a merger, consolidation or
other capital reorganization of the Company with or into another corporation; provided however that a merger, consolidation or other capital reorganization in which the holders of more than 50% of the shares of capital stock of the Company
outstanding immediately prior to such transaction continue to hold (either by the voting securities remaining outstanding or by being converted into voting securities of the surviving entity) more than 50% of the total voting power represented by
the voting securities of the Company, or such surviving entity, outstanding immediately after such transaction shall not constitute a Change in Control. 
 (f) “Code” means the Internal Revenue Code of 1986, as amended. 
 (g)
“Committee” means the committee appointed by the Board of Directors to administer the Plan in accordance with Section 4 below. 
 (h) “Common Stock” means the common stock, $0.001 par value, of the Company. 

 (i) “Company” means Cerberian, Inc., a Delaware corporation. 
 (j) “Consultant” means any person, including an advisor, who renders service to the Company, or any Parent, Subsidiary or
Affiliate, and is compensated for such services, and any Director of the Company or any Parent, Subsidiary, or Affiliate of the Company, whether compensated for such services or not. 
 (k) “Continuous Status as an Employee or Consultant” means the absence of any interruption or termination of service as an
Employee or Consultant. Continuous Status as an Employee or Consultant shall not be considered interrupted in the case of: (i) sick leave; (ii) military leave; (iii) any other leave of absence approved by the Administrator, provided
that such leave is for a period of not more than 90 days, unless reemployment upon the expiration of such leave is guaranteed by contract or statute, or unless provided otherwise pursuant to Company policy adopted from time to time; or (iv) in
the case of transfers between locations of the Company or between the Company, its Parent(s), Affiliates, Subsidiaries or their respective successors. For purposes of this Plan, a change in status from an Employee to a Consultant or from a
Consultant to an Employee will not constitute an interruption of Continuous Status as an Employee or Consultant. 
 (l)
“Director” means a member of the Board. 
 (m) “Employee” means any person, including
officers and directors, employed by the Company or any Parent, Subsidiary or Affiliate of the Company, with the status of employment determined based upon such minimum number of hours or periods worked as shall be determined by the Administrator in
its discretion, subject to any requirements of the Code. The payment of a director’s fee to a Director shall not be sufficient to constitute “employment” of such director by the Company. 
 (n) “Exchange Act” means the Securities Exchange Act of 1934, as amended. 
 (o) “Fair Market Value” means, as of any date, the fair market value of Common Stock determined as follows: 
 (i) If the Common Stock is listed on any established stock exchange or a national market system, including, without limitation, the National Market
System of the National Association of Securities Dealers, Inc. Automated Quotation (“Nasdaq”) System, its Fair Market Value shall be the closing sales price for such stock (or the closing bid, if no sales were reported), as quoted
on such system or exchange, or the exchange with the greatest volume of trading in Common Stock for the last market trading day prior to the time of determination, as reported in The Wall Street Journal or such other source as the
Administrator deems reliable; 
 (ii) If the Common Stock is quoted on the Nasdaq System (but not on the National Market System thereof) or
regularly quoted by a recognized securities dealer but selling prices are not reported, its Fair Market Value shall be the mean between the high bid and 

  

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low asked prices for the Common Stock for the last market trading day prior to the time of determination, as reported in The Wall Street Journal or
such other source as the Administrator deems reliable; or 
 (iii) In the absence of an established market for the Common Stock, the Fair
Market Value thereof shall be determined in good faith by the Administrator. 
 (p) “Incentive Stock Option” means an
Option intended to qualify as an incentive stock option within the meaning of Section 422 of the Code, as designated in the applicable written Notice of Stock Option Grant. 
 (q) “Listed Security” means any security of the Company which is listed or approved for listing on a national securities exchange
or designated or approved for designation as a national market system security or on interdealer quotation system by the National Association of Securities Dealers, Inc. 
 (r) “Nonstatutory Stock Option” means an Option not intended to qualify as an Incentive Stock Option, as designated in the applicable written Notice of Stock Option Grant. 
 (s) “Notice of Stock Option Grant” means a written notice to the Optionee from the Company granting the Option, which notice
shall be signed by the Company’s representative and such Optionee and shall include the following information: (i) the number of Shares covered thereby; (ii) the vesting commencement date and vesting schedule; (iii) the exercise
price per Share; (iv) the termination period and expiration date; and (v) whether the Option is an Incentive Stock Option or a Nonstatutory Stock Option. 
 (t) “Option” means a stock option granted pursuant to the Plan, 
 (u)
“Option Exchange Program” means a program whereby outstanding options are exchanged for Options with a lower exercise price. 
 (v) “Optioned Stock” means the Common Stock subject to an Option. 
 (w)
“Optionee” means an Employee or Consultant who receives an Option. 
 (x) “Parent” means a
“parent corporation,” whether now or hereafter existing, as defined in Section 424(e) of the Code, or any successor provision. 
 (y) “Plan” means this 2000 Stock Option Plan. 
 (z) “Reporting Person” means an
officer, director, or greater than 10% shareholder of the Company within the meaning of Rule l6a-2 under the Exchange Act, who is required to file reports pursuant to Rule 16a-3 under the Exchange Act. 
  

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 (aa) “Rule 16b-3” means Rule 16b-3 promulgated under the Exchange Act, as the
same may be amended from time to time, or any successor provision. 
 (bb) “Share” means a share of Common Stock, as
adjusted in accordance with Section 11 of the Plan. 
 (cc) “Stock Exchange” means any stock exchange or
consolidated stock price reporting system on which prices for the Common Stock are quoted at any given time. 
 (dd)
“Subsidiary” means a “subsidiary corporation,” whether now or hereafter existing, as defined in Section 424(f) of the Code, or any successor provision. 
 (ee) “Tax Date” shall have the meaning set forth in Section 10 of the Plan. 
 3. Stock Subject to the Plan. Subject to the provisions of Section 11 of the Plan, the maximum aggregate number of Shares that may be
optioned and sold under the Plan is 800,000 Shares of Common Stock. The Shares may be authorized, but unissued, or reacquired Common Stock. If an Option expires or becomes unexercisable for any reason without having been exercised in full, or is
surrendered pursuant to an Option Exchange Program, the unpurchased Shares that were subject thereto shall, unless the Plan shall have been terminated, become available for future grant under the Plan. In addition, any shares of Common Stock that
are retained by the Company upon exercise of an Option in order to satisfy the exercise or purchase price for such Option, or any withholding taxes due with respect to such exercise shall be treated as not issued and shall continue to be available
under the Plan. Shares repurchased by the Company pursuant to any repurchase right that the Company may have shall not be available for future grant under the Plan. 
 4. Administration of the Plan. 
 (a) Initial Plan Procedure. Prior to the date,
if any, upon which the Company becomes subject to the Exchange Act, the Plan shall be administered by the Board or a committee appointed by the Board. 
 (b) Plan Procedure After the Date, if any, Upon Which the Company Becomes Subject to the Exchange Act. 
 (i) Multiple Administrative Bodies. If permitted by Rule 16b-3, grants under the Plan may be made by different bodies with respect to Directors, non-Directors, officers, Employees or Consultants who are
not Reporting Persons. 
 (ii) Administration With Respect to Reporting Persons. With respect to grants of Options to
Employees who are Reporting Persons, if any, such grants shall be made by (A) the Board if the Board may make grants to Reporting Persons under the Plan in compliance with Rule 16b-3, or (B) a committee designated by the Board to make
grants to Reporting Persons under the Plan, which committee shall be constituted in such a manner as to 

  

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permit grants under the Plan to comply with Rule 16b-3. Once appointed, such committee shall continue to serve in its designated capacity until otherwise
directed by the Board. From time to time the Board may increase the size of the committee and appoint additional members thereof, remove members (with or without cause) and appoint new members in substitution therefor, fill vacancies, however
caused, and remove all members of the committee and thereafter directly make grants to Reporting Persons under the Plan, all to the extent permitted by Rule 16b-3. 
 (iii) Administration With Respect to Consultants and Other Employees. With respect to grants of Options to Employees or Consultants who are not Reporting Persons, the Plan shall be administered by
(A) the Board or (B) a committee designated by the Board, which committee shall be constituted in such a manner as to satisfy the Applicable Laws. Once appointed, such committee shall continue to serve in its designated capacity until
otherwise directed by the Board. From time to time the Board may increase the size of the committee and appoint additional members thereof, remove members (with or without cause) and appoint new members in substitution therefor, fill vacancies,
however caused, and remove all members of the committee and thereafter directly administer the Plan, all to the extent permitted by the Applicable Laws. 
 (c) Powers of the Administrator. Subject to the provisions of the Plan and in the case of a Committee, the specific duties delegated by the Board to such Committee, and subject to the approval of any
relevant authorities, including the approval, if required, of any Stock Exchange, the Administrator shall have the authority, in its discretion: 
 (i) to determine the Fair Market Value of the Common Stock, in accordance with Section 2(o) of the Plan; 
 (ii) to select the
Consultants and Employees to whom Options may from time to time be granted hereunder; 
 (iii) to determine whether and to what extent
Options are granted hereunder; 
 (iv) to determine the number of shares of Common Stock to be covered by each such Option granted
hereunder; 
 (v) to approve forms of agreement for use under the Plan; 
 (vi) to determine the terms and conditions, not inconsistent with the terms of the Plan, of any Option granted hereunder, which terms and conditions
include but are not limited to the exercise price, the time or times when Options may be exercised (which may be based on performance criteria), and vesting acceleration or waiver of forfeiture restrictions, and any restriction or limitation
regarding any Option or any Optioned Stock, based in each case on such factors as the Administrator, in its sole discretion, shall determine; 
  

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 (vii) to determine whether and under what circumstances an Option may be settled in cash under
Section 9(g) instead of Common Stock; 
 (viii) to reduce the exercise price of any Option to the then current Fair Market Value if the
Fair Market Value of the Common Stock covered by such Option has declined since the date the Option was granted; 
 (ix) to initiate an
Option Exchange Program; and 
 (x) to construe and interpret the terms of the Plan and Options granted under the Plan. 
 (d) Effect of Administrator’s Decision. All decisions, determinations and interpretations of the Administrator shall be final and
binding on all holders of Options. 
 5. Eligibility. 
 (a) Recipients of Administrator’s Decision. Nonstatutory Stock Options may be granted to Employees and Consultants. Incentive Stock
Options may be granted only to Employees; provided however that Employees of Affiliates shall not be eligible to receive Incentive Stock Options. An Employee or Consultant who has been granted an Option may, if he or she is otherwise eligible, be
granted additional Options. 
 (b) Type of Option. Each Option shall be designated in the Notice of Stock Option Grant as
either an Incentive Stock Option or a Nonstatutory Stock Option. However, notwithstanding such designations, to the extent that the aggregate Fair Market Value of Shares with respect to which Options designated as Incentive Stock Options are
exercisable for the first time by an Optionee during any calendar year (under all plans of the Company or any Parent or Subsidiary) exceeds $100,000, such excess Options shall be treated as Nonstatutory Stock Options. For purposes of this
Section 5(b), Incentive Stock Options shall be taken into account in the order in which they were granted, and the Fair Market Value of the Shares subject to an Incentive Stock Option shall be determined as of the date of the grant of such
Option. 
 (c) At-Will Relationships. The Plan shall not confer upon any Optionee any right with respect to continuation of
employment or consulting relationship with the Company, nor shall it interfere in any way with such Optionee’s right or the Company’s right to terminate his or her employment or consulting relationship at any time, with or without cause.

 6. Term of Plan. The Plan shall become effective upon its adoption by the Board. It shall continue in effect for a term of
ten years unless sooner terminated under Section 14 of the Plan. 
 7. Term of Options. The term of each Option shall be
the term stated in the Notice of Stock Option Grant; provided, however, that the terms shall be no more than ten years from the date of grant thereof or such shorter term as may be provided in the Notice of Stock Option 

  

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Grant. However, in the case of an Incentive Stock Option granted to an Optionee who, at the rime the Option is granted, owns stock representing more than 10%
of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the terra of the Option shall be five years from the date of grant thereof or such shorter terms as may be provided in the Notice of Stock Option
Grant. 
 8. Option Exercise Price and Consideration. 
 (a) The per Share exercise price for the Shares to be issued pursuant to exercise of an Option shall be such price as is determined by the Board and set
forth in the applicable Notice of Stock Option Grant, but shall be subject to the following: 
 (i) In the case of an Incentive Stock Option
that is: 
 (A) granted to an Employee who, at the time of the grant of such Incentive Stock Option, owns stock representing more than 10% of
the total combined voting power of all classes of capital stock of the Company or any Parent or Subsidiary, the per Share exercise price shall be no less than 110% of the Fair Market Value per Share on the date of grant. 
 (B) granted to any other Employee, the per Share exercise shall be no less than 100% of the Fair Market Value per Share on the date of grant. 

(ii) In the case of a Nonstatutory Stock Option that is: 
 (A) granted to a person who, at the time of the grant of such Option, owns stock representing more than 10% of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the
per Share exercise price shall be no less than 100% of the Fair Market Value per Share on the date of the grant. 
 (B) granted to any other
eligible person, the per Share exercise price shall be no less than 85% of the Fair Market Value per Share on the date of grant. 
 (iii)
Notwithstanding the foregoing, Options may be granted with a per Share exercise price other than as-required above pursuant to a merger or other corporate transaction. 
 (b) The consideration to be paid for the Shares to be issued upon exercise of an Option, including the method of payment, shall be determined by the Administrator (and, in the case of an Incentive Stock Option, shall
be determined at the time of grant) and may consist entirely of (1) cash, (2) check, (3) promissory note, (4) cancellation of indebtedness, (5) other Shares that (x) in the case of Shares acquired upon exercise of an
Option, have been owned by the Optionee for more than six months on the date of surrender or such other period as may be required to avoid a charge to the Company’s earnings for financial accounting purposes, and (y) have a Fair Market
Value on the date of surrender equal to the aggregate exercise price of the 

  

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Shares as to which such Option shall be exercised, (6) authorization for the Company to retain from the total number of Shares as to which the Option is
exercised that number of Shares having a Fair Market Value on the date of exercise equal to the exercise price for the total number of Shares as to which the Option is exercised, (7) delivery of a properly executed exercise notice together with
such other documentation as the Administrator and the broker, if applicable, shall require to effect an exercise of the Option and delivery to the Company of the sale or loan proceeds required to pay the exercise price and any applicable income or
employment taxes, (8) delivery of an irrevocable subscription agreement for the Shares that irrevocably obligates the option holder to take and pay for the Shares not more than twelve months after the date of delivery of the subscription
agreement, (9) any combination of the foregoing methods of payment, or (10) such other consideration and method of payment for the issuance of Shares to the extent permitted under the Applicable Laws. In making its determination as to the
type of consideration to accept, the Administrator shall consider if acceptance of such consideration may be reasonably expected to benefit the Company. 
 9. Exercise of Option. 
 (a) Procedure for Exercise; Rights as a Shareholder. Any
Option granted hereunder shall be exercisable at such times and under such conditions as determined by the Administrator and reflected in the Notice of Stock Option Grant, which may include vesting requirements and/or performance criteria with
respect to the Company and/or the Optionee; provided, however, that any Option granted prior to the date, if any, upon which the Common Stock becomes a Listed Security shall become exercisable as follows: 25% of the Option shall vest on the one-year
anniversary of the date the Option is granted, and thereafter 6.25% of such Option shall vest on the quarterly anniversary of the date such Option was granted. The Administrator shall have the right to include in the Notice of Stock Option Grant an
accelerated vesting schedule that may be triggered upon the occurrence of certain events determined by the Administrator. In the event that any of the Shares issued upon exercise of an Option (which exercise occurs prior to the date, if any, upon
which the Common Stock becomes a Listed Security) should be subject to a right of repurchase in the Company’s favor, such repurchase right shall lapse at the rate of at least 25% per year over four years from the date the Option is
granted. The Administrator shall have the discretion to determine whether and to what extent the vesting of Options shall be tolled during any leave of absence; provided, however, that in the absence of such determination, vesting of Options shall
be tolled during any such leave. 
 An Option may not be exercised for a fraction of a Share. 
 Any Option shall be deemed exercised when written notice of such exercise has been given to the Company in accordance with the terms of the Option by the
person entitled to exercise the Option and the Company has received full payment for the Shares with respect to which the Option is exercised. Full payment may, as authorized by the Administrator, consist of any consideration and method of payment
allowable under Section 8(b) of the Plan. Until the issuance (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company) of the stock certificate evidencing such Shares, no right to
vote or receive dividends or any other rights as a shareholder shall exist with respect to 

  

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the Optioned Stock, notwithstanding the exercise of the Option. The Company shall issue (or cause to be issued) such stock certificate promptly upon exercise
of the Option. No adjustment will be made for a dividend or other right for which the record date is prior to the date the stock certificate is issued, except as provided in Section 11 of the Plan. 
 Exercise of an Option in any manner shall result in a decrease in the number of Shares that thereafter may be available, both for purposes of the Plan
and for sale under the Option, by the number of Shares as to which the Option is exercised. 
 (b) Termination of Employment or
Consulting Relationship. Subject to Section 9(c) below, in the event of termination of an Optionee’s Continuous Status as an Employee or Consultant with the Company, such Optionee may, but only within three months (or such other
period of time not less than 30 days as is determined by the Administrator, with such determination in the case of an Incentive Stock Option being made at the time of grant of the Option and not exceeding three months) after the date of such
termination (but in no event later than the expiration date of the term of such Option as set forth in the Notice of Stock Option Grant), exercise his or her Option to the extent that the Optionee was entitled to exercise it at the date of such
termination. To the extent that the Optionee was not entitled to exercise the Option at the date of such termination, or if the Optionee does not exercise such Option to the extent so entitled within the time specified herein, the Option shall
terminate and the Optioned Stock underlying the unexercised portion of the Option shall revert to the Plan. No termination shall be deemed to occur and this Section 9(b) shall not apply if (i) the Optionee is a Consultant who becomes an
Employee, or (ii) the Optionee is an Employee who becomes a Consultant. 
 (c) Disability of Optionee. 
 (i) Notwithstanding Section 9(b) above, in the event of termination of an Optionee’s Continuous Status as an Employee or Consultant as a result
of his or her total and permanent disability (within the meaning of Section 22(e)(3) of the Code), such Optionee may, but only within twelve months from the date of such termination (but in no event later than the expiration date of the term of
such Option as set forth in the Notice of Stock Option Grant), exercise the Option to the extent otherwise entitled to exercise it at the date of such termination. To the extent that the Optionee was not entitled to exercise the Option at the date
of termination, or if the Optionee does not exercise such Option to the extent so entitled within the time specified herein, the Option shall terminate and the Optioned Stock underlying the unexercised portion of the Option shall revert to the Plan,

 (ii) In the event of termination of an Optionee’s Continuous Status as an Employee or Consultant as a result of a disability which
does not fall within the meaning of total and permanent disability (as set forth in Section 22(e)(3) of the Code), such Optionee may, but only within six months from the date of such termination (but in no event later than the expiration date
of the term of such Option as set forth in the Notice of Stock Option Grant), exercise the Option to the extent otherwise entitled to exercise it at the date of such termination. To the extent, however, that such Optionee fails to exercise an Option
which is an Incentive Stock Option (within the meaning of Section 422 of the Code) within three months of the date of 

  

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such termination, the Option will not qualify for Incentive Stock Option treatment under the Code. To the extent that the Optionee was not entitled to
exercise the Option at the date of termination, or if the Optionee does not exercise such Option to the extent so entitled within six months from the date of termination, the Option shall terminate and the Optioned Stock underlying the unexercised
portion of the Option shall revert to the Plan. 
 (d) Death of Optionee. In the event the death of an Optionee during the
period of Continuous Status as an Employee or Consultant since the date of grant of the Option, or within 30 days following termination of the Optionee’s Continuous Status as an Employee or Consultant, the Option may be exercised at any time
within six months following the date of death (but in no event later than the expiration date of the term of such Option as set forth in the Notice of Stock Option Grant), by such Optionee’s estate or by a person who acquired the right to
exercise the Option by bequest or inheritance, but only to the extent of the right to exercise that had accrued at the date of death or, if earlier, the date of termination of the Optionee’s Continuous State as an Employee of Consultant. To the
extent that the Optionee was not entitled to exercise the Option at the date of death or termination, as the case may be, or if the Optionee (or the Optionee’s estate or any person who acquired the right to exercise the Option by bequest or
inheritance) does not exercise such Option to the extent so entitled within the time specified herein, the Option shall terminate and the Optioned Stock underlying the unexercised portion of the Option shall revert to the Plan. 
 (e) Extension of Exercise Period. The Administrator shall have full power and authority to extend the period of time for which an Option is
to remain exercisable following termination of an Optionee’s Continuous Status as an Employee or Consultant from the periods set forth in Sections 9(b) and 9(d) above or in the Notice of Stock Option Grant to such greater time as the Board
shall deem appropriate; provided, however, that in no event shall such option be exercisable later than the date of expiration of the term of such Option as set forth in the Notice of Stock Option Grant. 
 (f) Rule l6b-3. Options granted to Reporting Persons shall comply with Rule l6b-3 and shall contain such additional conditions or
restrictions as may be required thereunder to qualify for the maximum exemption for Plan transactions. 
 (g) Buy-Out
Provisions. The Administrator may at any time offer to buy out for a payment in cash or Shares an Option previously granted, based on such terms and conditions as the Administrator shall establish and communicate to the Optionee at the time
such offer is made. 
 10. Stock Withholding to Satisfy Withholding Tax Obligations. At the discretion of the Administrator,
Optionees may satisfy withholding obligations as provided in this paragraph. When an Optionee incurs tax liability in connection with an Option, which tax liability is subject to tax withholding under applicable tax laws, and the Optionee is
obligated to pay the Company an amount required to be withheld under applicable tax laws, the Optionee may satisfy the withholding tax obligation by one or some combination of the following methods: (a) by cash or check payment, (b) out of
the Optionee’s current compensation, (c) if 

  

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permitted by the Administrator, in its discretion, by surrendering to the Company Shares that (i) in the case of Shares previously acquired from the
Company, have been owned by the Optionee for more than six months on the date of surrender, and (ii) have a Fair Market Value on the date of surrender equal to or less than the amount required to be withheld, or (d) by electing to have the
Company withhold from the Shares to be issued upon exercise of the Option, if any, that number of Shares having a Fair Market Value equal to the amount required to be withheld. For this purpose, the Fair Market Value of the Shares to be withheld
shall be determined on the date that the amount of tax to be withheld is to be determined (the “Tax Date”). 
 Any surrender by a
Reporting Person of previously owned Shares to satisfy tax withholding obligations arising upon exercise of this Option must comply with the applicable provisions of Rule 16b-3. 
 All elections by an Optionee to have Shares withheld to satisfy tax withholding obligations shall be made in writing in a form acceptable to the
Administrator and shall be subject to the following restrictions: 
 (a) the election must be made on or prior to the applicable Tax Date;

 (b) once made, the election shall be irrevocable as to the particular Shares of the Option as to which the election is made; and

 (c) all elections shall be subject to the consent or disapproval of the Administrator. 
 In the event the election to have Shares withheld is made by an Optionee and the Tax Date is deferred under Section 83 of the Code because no
election is filed under Section 83(b) of the Code, the Optionee shall receive the full number of Shares with respect to which the Option is exercised but such Optionee shall be unconditionally obligated to tender back to the Company any
proper number of Shares on the Tax Date. 
 11. Adjustments Upon Changes in Capitalization, Merger or Certain Other
Transactions. 
 (a) Changes in Capitalization. Subject to any required action by the shareholders of the Company, the
number of shares of Common Stock covered by each outstanding Option, and the number of shares of Common Stock that have been authorized for issuance under the Plan but as to which no Options have yet been granted or that have been returned to the
Plan upon cancellation or expiration of an Option, as well as the price per Share covered by each such outstanding Option, shall be proportionately adjusted for any increase or decrease in the number of issued shares of Common Stock resulting from a
stock split, or any other increase or decrease in the number of issued shares of Common Stock effected without receipt of consideration by the Company; provided, however, that conversion of any convertible securities of the Company shall not be
deemed to have been “effected without receipt of consideration.” Such adjustment shall be made by the Board, whose determination in that respect 

  

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shall be final, binding and conclusive. Except as expressly provided herein, no issuance by the Company of shares of stock of any class, or securities
convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of Shares subject to an Option 
 (b) Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the Company, the Board shall notify the Optionee
at least 15 days prior to such proposed action. To the extent it has not been previously exercised, the Option will terminate immediately prior to the consummation of such proposed action. 
 (c) Change in Control. In the event of a Change in Control, each outstanding Option shall be assumed or an equivalent option shall be
substituted by the corporation (or a Parent or Subsidiary of such successor corporation), unless the successor corporation does not agree to assume the outstanding Options or substitute equivalent options, in which case the outstanding Options shall
terminate upon the consummation of the transaction. 
 For purposes of this Section 11(c), an Option shall be considered assumed,
without limitation, if, at the time of issuance of the stock or other consideration upon such Change in Control, each Optionee would be entitled to receive upon exercise of an Option the same number and kind of shares stock or the same amount of
property, cash or securities as the Optionee would have been entitled to receive upon the occurrence of such transaction if the Optionee had been, immediately prior to the transaction, the holder of the number of Shares covered by the Option at such
time (after giving effect to any adjustments in the number of Shares covered by the Option as provided for in this Section 11); provided, however, that if such consideration received in the Change of Control was not solely common stock of the
successor corporation or its Parent, the Administrator may, with the consent of the successor corporation, provide for the consideration to be received upon exercise of the Option to be solely common stock of the successor corporation or its Parent
equal to the Fair Market Value of the per Share consideration received by holders of Common Stock in the transaction. 
 (d) Certain
Distributions. In the event of any distribution to the Company’s shareholders of securities of any other entity or other asset (other than dividends payable in cash or stock of the Company) without receipt of consideration by the
Company, the Administrator may, in its discretion, appropriately adjust the price per Share covered by each outstanding Option to reflect the effect of such distribution. 
 12. Non-Transferability of Options. Options may not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any manner other than by will or by the laws of descent or distribution and
may be exercised or purchased during the lifetime of the Optionee only by Optionee; provided, however, that, after the date, if any, upon which the Common Stock becomes a Listed Security, the Administrator may in its discretion grant transferable
Nonstatutory Stock Options pursuant to a Notice of Stock Option Grant specifying (i) the manner in which such Nonstatutory Stock Options are transferable and (ii) that any such transfer shall be subject to the Applicable Laws. The
designation of the beneficiary by an Optionee will not constitute a transfer. An Option may be exercised, during the lifetime of the Optionee, only by the Optionee or a transferee permitted by this Section 12. 
  

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 13. Time of Granting Options. The date of grant of an Option shall, for all purposes, be
the date on which the Administrator makes the determination grating such Option, or such other date as is determinated by the Board; provided, however, that in the case of any Incentive Stock Option, the grant date shall be the later of the date on
which the Administrator makes the determination granting such Incentive Stock Option or the date of commencement of the Optionee’s employment relationship with the Company. Notice of the determination shall be given to each Employee or
Consultant to whom an Option is so granted within a reasonable time after the date of such grant. 
 14. Amendment and Termination of
the Plan. 
 (a) Authority to Amend or Terminate. The Board may at any time amend, alter, suspend or discontinue the
Plan, but no amendment, alteration, suspension or discontinuation shall be made that would impair the rights of any Optionee under any grant theretofore made, without his or her consent. In addition, to the extent necessary and desirable to comply
with Rule 16b-3 or with Section 422 of the Code (or any other applicable law or regulation, including the requirements of any Stock Exchange), the Company shall obtain shareholder approval of any Plan amendment in such a manner and to such a
degree as required. 
 (b) Effect of Amendment or Termination. No amendment or termination of the Plan shall adversely affect
Options already granted, unless mutually agreed otherwise between the Optionee and the Administrator, which agreement must be in writing and signed by the Optionee and the Company. 
 15. Conditions Upon Issuance of Shares. Shares shall not be issued pursuant to the exercise of an Option unless the exercise of such Option
and the issuance and delivery of such Shares pursuant thereto shall comply with all relevant provisions of law, including, without limitation, the Securities Act of 1933, as amended, the Exchange Act, the rules and regulations promulgated
thereunder, and the requirements of any Stock Exchange. 
 As a condition to the exercise of an Option, the Company may require the person
exercising such Option to represent and warrant at the time of such exercise that the Shares are being purchased only for investment and without any present intention to sell or distribute such Shares if, in the opinion of counsel for the Company,
such a representation is required by law. 
 16. Reservation of Shares. The Company, during the term of this Plan, will at all
times reserve and keep available such number of Shares as shall be sufficient to satisfy the requirements of the Plan. The inability of the Company to obtain authority from any regulatory body having jurisdiction, which authority is deemed by the
Company’s counsel to be necessary to the lawful issuance and sale of any Shares hereunder, shall relieve the Company of any liability in respect of the failure to issue or sell such Shares as to which such requisite authority shall not have
been obtained. 
  

 13 

 17. Notice of Stock Option Grant. Options shall be evidenced by Notice of Stock Option
Grant in such form(s) as the Administrator shall approve from time to time. 
 18. Shareholder Approval. Continuance of the
Plan shall be subject to approval by the shareholders of the Company within twelve months before or after the date the Plan is adopted. Such shareholder approval shall be obtained in the degree and manner required under applicable state and federal
law and the rules of any Stock Exchange upon which the Common Stock is listed. All Options issued under the Plan shall become void in the event such approval is not obtained. 
 19. Information and Documents to Optionees. The Company shall provide financial statements at least annually to each Optionee during the
period such Optionee has one or more Options outstanding, and in the case of an individual who acquired Shares pursuant to the Plan, during the period such individuals own such Shares. The Company shall not be required to provide such information if
the issuance of Options under the Plan is limited to key employees who duties in connection with the Company assure their access to equivalent information. In addition, at the time of issuance of any securities under the Plan, the Company shall
provide to the Optionee a copy of the Plan and any agreement(s) pursuant to which securities granted under the Plan are issued. 
  

 14First Amended or Restated Permeo Technologies, Inc. 2001 Stock Option Plan

 Exhibit 10.23 
 FIRST AMENDED AND RESTATED 
 PERMEO TECHNOLOGIES, INC. 
 2001 STOCK OPTION PLAN 
 (amended
effective October 19, 2005) 
 1. Purpose. The purposes of the Plan are to attract and retain
for the Company and its Affiliates the best available personnel, to provide additional incentive to Employees, Directors and Consultants and to increase their interest in the Company’s welfare, and to promote the success of the business of the
Company and its Affiliates. 
 2. Definitions. As used herein, unless the context requires otherwise, the following terms shall have the
meanings indicated below: 
 a. “Affiliate” means (i) any corporation, partnership or other entity which owns, directly
or indirectly, a majority of the voting equity securities of the Company, (ii) any corporation, partnership or other entity of which a majority of the voting equity securities or equity interest is owned, directly or indirectly, by the Company,
and (iii) with respect to an Option that is intended to be an Incentive Stock Option, (A) any “parent corporation” of the Company, as defined in Section 424(e) of the Code or (B) any “subsidiary corporation”
of the Company as defined in Section 424(f) of the Code, any other entity that is taxed as a corporation under Section 7701(a)(3) of the Code and is a member of the “affiliated group” as defined in Section 1504(a) of the
Code of which the Company is the common parent, and any other entity as may be permitted from time to time by the Code or by the Internal Revenue Service to be an employer of Employees to whom Incentive Stock Options may be granted; provided,
however, that in each case the Affiliate must be consolidated in the Company’s financial statements. 
 b. “Board”
means the Board of Directors of the Company. 
 c. “Code” means the Internal Revenue Code of 1986, as amended, and any
successor statute. Reference in the Plan to any section of the Code shall be deemed to include any amendments or successor provisions to such section and any Treasury regulations promulgated under such section. 
 d. “Committee” means the committee, as constituted from time to time, of the Board that is appointed by the Board to administer the
Plan; provided, however, that while the Common Stock is publicly traded, the Committee shall be a committee of the Board consisting solely of two or more Outside Directors, in accordance with Section 162(m) of the Code, and/or solely of two or
more Non-Employee Directors, in accordance with Rule 16b-3, as necessary in each case to satisfy such requirements with respect to Options granted under the Plan. Within the scope of such authority, the Committee may (i) delegate to a committee
of one or more members of the Board who are not Outside Directors the authority to grant Options to eligible persons who are either (A) not then Covered Employees and are not expected to be Covered Employees at the time of recognition of income
resulting from such Options or (B) not persons with respect to whom the Company wishes to comply with Section 162(m) of the Code and/or (ii) delegate to a committee of one or more members of the Board who are not Non-Employee
Directors the authority to grant Options to eligible persons who are not then subject to Section 16 of the Exchange Act. If a committee has not been established by the Board to administer the Plan, or if no such committee shall be in existence
at any time during the term of the Plan, “Committee” at such time means the Board. 

 e. “Common Stock” means the Common Stock, $0.001 par value per share, of the Company or
the common stock that the Company may in the future be authorized to issue (as long as the common stock varies from that currently authorized, if at all, only in amount of par value). 
 f. “Company” means Permeo Technologies, Inc., a Delaware corporation. 
 g. “Consultant” means any person (other than an Employee or a Director, solely with respect to rendering services in such person’s
capacity as a Director) who is engaged by the Company or any Affiliate to render consulting or advisory services to the Company or such Affiliate and who is a “consultant or advisor” within the meaning of Rule 701 promulgated under the
Securities Act or Form S-8 promulgated under the Securities Act. 
 h. “Continuous Service” means that the provision of
services to the Company or an Affiliate in any capacity of Employee, Director or Consultant is not interrupted or terminated. Except as otherwise provided in the Option Agreement, service shall not be considered interrupted or terminated for this
purpose in the case of (i) any approved leave of absence, (ii) transfers among the Company, any Affiliate, or any successor, in any capacity of Employee, Director or Consultant, or (iii) any change in status as long as the individual
remains in the service of the Company or an Affiliate in any capacity of Employee, Director or Consultant. An approved leave of absence shall include sick leave, military leave, or any other authorized personal leave. For purposes of each Incentive
Stock Option, if such leave exceeds ninety (90) days, and re-employment upon expiration of such leave is not guaranteed by statute or contract, then the Incentive Stock Option shall be treated as a Non-Qualified Stock Option on the day that is
three (3) months and one (1) day following the expiration of such ninety (90)-day period. 
 i. “Covered Employee”
means the chief executive officer and the four other most highly compensated officers of the Company for whom total compensation is required to be reported to stockholders under Regulation S-K, as determined for purposes of Section 162(m) of
the Code. 
 j. “Director” means a member of the Board or the board of directors of an Affiliate. 
 k. “Disability” means the “disability” of a person as defined in a then effective long-term disability plan maintained by the
Company that covers such person, or if such a plan does not exist at any relevant time, “Disability” means the permanent and total disability of a person within the meaning of Section 22(e)(3) of the Code. For purposes of determining
the time during which an Incentive Stock Option may be exercised under the terms of an Option Agreement, “Disability” means the permanent and total disability of a person within the meaning of Section 22(e)(3) of the Code.
Section 22(e)(3) of the Code provides that an individual is totally and permanently disabled if he is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be
expected to result in death or which has lasted or can be expected to last for a continuous period of not less than twelve (12) months. 

 l. “Employee” means any person, including an Officer or Director, who is employed,
within the meaning of Section 3401 of the Code, by the Company or an Affiliate. The provision of compensation by the Company or an Affiliate to a Director solely with respect to such individual rendering services in the capacity of a Director,
however, shall not be sufficient to constitute “employment” by the Company or that Affiliate. 
 m. “Exchange Act”
means the Securities Exchange Act of 1934, as amended, and any successor statute. Reference in the Plan to any section of the Exchange Act shall be deemed to include any amendments or successor provisions to such section and any rules and
regulations relating to such section. 
 n. “Fair Market Value” means, as of any date, the value of the Common Stock
determined as follows: 
 i. If the Common Stock is listed on any established stock exchange or traded on the Nasdaq National Market or the
Nasdaq SmallCap Market, the Fair Market Value of a share of Common Stock shall be the closing sales price for such a share of Common Stock (or the closing bid, if no sales were reported) as quoted on such exchange or market (or if the Common Stock
is listed or traded on more than one exchange or market, the exchange or market with the greatest volume of trading in the Common Stock) on the last trading day prior to the day of determination, as reported in The Wall Street Journal or such
other source as the Committee deems reliable. 
 ii. In the absence of any such established market for the Common Stock, the Fair Market
Value shall be determined in good faith by the Committee. 
 o. “Incentive Stock Option” means an Option granted to an
Employee under the Plan that meets the requirements of Section 422 of the Code. 
 p. “Non-Employee Director” means a
Director of the Company who either (i) is not an Employee or Officer, does not receive compensation (directly or indirectly) from the Company or an Affiliate in any capacity other than as a Director (except for an amount as to which disclosure
would not be required under Item 404(a) of Regulation S-K), does not possess an interest in any other transaction as to which disclosure would be required under Item 404(a) of Regulation S-K and is not engaged in a business relationship as
to which disclosure would be required under Item 404(b) of Regulation S-K or (ii) is otherwise considered a “non-employee director” for purposes of Rule 16b-3. 
 q. “Non-Qualified Stock Option” means an Option granted under the Plan that is not intended to be an Incentive Stock Option. 

r. “Officer” means a person who is an “officer” of the Company or any Affiliate within the meaning of Section 16 of
the Exchange Act (whether or not the Company is subject to the requirements of the Exchange Act). 

 s. “Option” means a stock option granted pursuant to the Plan to purchase a specified
number of shares of Common Stock, whether granted as an Incentive Stock Option or as a Non-Qualified Stock Option. 
 t. “Option
Agreement” means the written agreement evidencing the grant of an Option executed by the Company and the Optionee, including any amendments thereto. 
 u. “Optionee” means an individual to whom an Option has been granted under the Plan. 
 v.
“Outside Director” means a Director of the Company who either (i) is not a current employee of the Company or an “affiliated corporation” (within the meaning of the Treasury regulations promulgated under
Section 162(m) of the Code), is not a former employee of the Company or an “affiliated corporation” receiving compensation for prior services (other than benefits under a tax qualified pension plan), has not been an officer of the
Company or an “affiliated corporation” at any time and is not currently receiving (within the meaning of the Treasury regulations promulgated under Section 162(m) of the Code) direct or indirect remuneration from the Company or an
“affiliated corporation” for services in any capacity other than as a Director, or (ii) is otherwise considered an “outside director” for purposes of Section 162(m) of the Code. 
 w. “Plan” means this First Amended and Restated Permeo Technologies, Inc. 2001 Stock Option Plan, as set forth herein and as it may be
amended from time to time. 
 x. “Qualifying Shares” means shares of Common Stock which either (i) have been owned by
the Optionee for more than six (6) months and have been “paid for” within the meaning of Rule 144 promulgated under the Securities Act, or (ii) were obtained by the Optionee in the public market. 
 y. “Regulation S-K” means Regulation S-K promulgated under the Securities Act, as it may be amended from time to time, and any successor
to Regulation S-K. Reference in the Plan to any item of Regulation S-K shall be deemed to include any amendments or successor provisions to such item. 
 z. “Rule 16b-3” means Rule 16b-3 promulgated under the Exchange Act, as it may be amended from time to time, and any successor to Rule 16b-3. 
 aa. “Section” means a section of the Plan unless otherwise stated or the context otherwise requires. 
 bb. “Securities Act” means the Securities Act of 1933, as amended, and any successor statute. Reference in the Plan to any section of
the Securities Act shall be deemed to include any amendments or successor provisions to such section and any rules and regulations relating to such section. 
 cc. “Ten Percent Stockholder” means a person who owns (or is deemed to own pursuant to Section 424(d) of the Code) at the time an Option is granted stock possessing more than ten percent
(10%) of the total combined voting power of all classes of stock of the Company or of any of its Affiliates. 

 3. Types of Options and Shares. Options granted under the Plan may be either Incentive Stock
Options or Non-Qualified Stock Options, as designated at the time of grant. 
 4. Shares Subject to Plan. The Committee may not grant
Options under the Plan for more than 5,377,885 shares of Common Stock, subject to adjustment as provided in Section 11(a). If any Option expires or is terminated without being exercised in whole or in part, the unexercised or released shares of
Common Stock from such Options shall be available for future grant and purchase under the Plan. At all times during the term of the Plan, the Company shall reserve and keep available such number of shares of Common Stock as will be required to
satisfy the requirements of outstanding Options under the Plan. Nothing in this Section 4 shall impair the right of the Company to reduce the number of outstanding shares of Common Stock pursuant to repurchases, redemptions, or otherwise; provided,
however, that no reduction in the number of outstanding shares of Common Stock shall (a) impair the validity of any outstanding Option, whether or not that Option is fully exercisable, or (b) impair the status of any shares of Common Stock
previously issued pursuant to an Option as duly authorized, validly issued, fully paid, and nonassessable. 
 5. Eligibility. Options
other than Incentive Stock Options may be granted to Employees, Officers, Directors, and Consultants (subject to any limitations under Rule 701 under the Securities Act, if relied on by the Company for the Option). Incentive Stock Options may be
granted only to Employees (including Officers and Directors who are also Employees). The Committee in its sole discretion shall select the recipients of Options. An Optionee may be granted more than one Option under the Plan, and Options may be
granted at any time or times during the term of the Plan. The grant of an Option to an Employee, Officer, Director or Consultant shall not be deemed either to entitle that individual to, or to disqualify that individual from, participation in any
other grant of Options under the Plan. 
 6. Terms and Conditions of Options. The Committee shall determine (a) whether each Option
shall be granted as an Incentive Stock Option or as a Non-Qualified Stock Option and (b) the provisions, terms, and conditions of each Option including, but not limited to, the vesting schedule, the number of shares of Common Stock subject to the
Option, the exercise price of the Option, the period during which the Option may be exercised, repurchase provisions, rights of first refusal, forfeiture provisions, methods of payment, and all other terms and conditions of the Option, subject to
the following: 
 a. Form of Option Grant. Each Option granted under the Plan shall be evidenced by a written Option Agreement in such
form (which need not be the same for each Optionee) as the Committee from time to time approves, but which is not inconsistent with the Plan, including any provisions that may be necessary to assure that any Option that is intended to be an
Incentive Stock Option will comply with Section 422 of the Code. 
 b. Date of Grant. The date of grant of an Option will be the
date on which the Committee makes the determination to grant such Option unless otherwise specified by the Committee. The Option Agreement evidencing the Option will be delivered to the Optionee with a copy of the Plan and other relevant Option
documents within a reasonable time after the date of grant. 

 c. Exercise Price. The exercise price of a Non-Qualified Stock Option shall be not less than 85%
of the Fair Market Value of the shares of Common Stock on the date of grant of the Option. The exercise price of any Incentive Stock Option shall be not less than 100% of the Fair Market Value of the shares of Common Stock on the date of grant of
the Option. The exercise price of any Incentive Stock Option granted to a Ten Percent Stockholder shall not be less than 110% of the Fair Market Value of the shares of Common Stock on the date of grant of the Option. 
 d. Exercise Period. Options shall be exercisable within the time or times or upon the event or events determined by the Committee and set forth in
the Option Agreement; provided, however, that no Option shall be exercisable after the expiration of ten (10) years from the date of grant of the Option, and provided further, that no Incentive Stock Option granted to a Ten Percent Stockholder
shall be exercisable after the expiration of five (5) years from the date of grant of the Option. 
 e. Limitations on Incentive
Stock Options. The aggregate Fair Market Value (determined as of the date of grant of an Option) of Common Stock which any Employee is first eligible to purchase during any calendar year by exercise of Incentive Stock Options granted under the
Plan and by exercise of incentive stock options (within the meaning of Section 422 of the Code) granted under any other incentive stock option plan of the Company or an Affiliate shall not exceed $100,000. If the Fair Market Value of stock with
respect to which all incentive stock options described in the preceding sentence held by any one Optionee are exercisable for the first time by such Optionee during any calendar year exceeds $100,000, the Options (that are intended to be Incentive
Stock Options on the date of grant thereof) for the first $100,000 worth of shares of Common Stock to become exercisable in such year shall be deemed to constitute incentive stock options within the meaning of Section 422 of the Code and the
Options (that are intended to be Incentive Stock Options on the date of grant thereof) for the shares of Common Stock in the amount in excess of $100,000 that become exercisable in that calendar year shall be treated as Non-Qualified Stock Options.
If the Code or the Treasury regulations promulgated thereunder are amended after the effective date of the Plan to provide for a different limit than the one described in this Section 6(e), such different limit shall be incorporated herein and
shall apply to any Options granted after the effective date of such amendment. 
 f. Transferability of Options. Options granted under
the Plan, and any interest therein, shall not be transferable or assignable by the Optionee, and may not be made subject to execution, attachment or similar process, otherwise than by will or by the laws of descent and distribution, and shall be
exercisable during the lifetime of the Optionee only by the Optionee; provided, that the Optionee may, however, designate persons who or which may exercise his Options following his death. 
 g. Acquisitions and Other Transactions. The Committee may, from time to time, assume outstanding options granted by another entity, whether in
connection with an acquisition of such other entity or otherwise, by either (i) granting an Option under the Plan in replacement of or in substitution for the option assumed by the Company, or (ii) treating the 

 
assumed option as if it had been granted under the Plan if the terms of such assumed option could be applied to an Option granted under the Plan. Such
assumption shall be permissible if the holder of the assumed option would have been eligible to be granted an Option hereunder if the other entity had applied the rules of the Plan to such grant. The Committee also may grant Options under the Plan
in settlement of or substitution for, outstanding options or obligations to grant future options in connection with the Company or an Affiliate acquiring another entity, an interest in another entity or an additional interest in an Affiliate whether
by merger, stock purchase, asset purchase or other form of transaction. Notwithstanding the foregoing provisions of Section 6(c), in the case of an Option issued or assumed pursuant to this Section 6(g), the exercise price for the Option
shall be determined in accordance with the principles of Section 424(a) of the Code and the Treasury regulations promulgated thereunder. 
 7. Exercise of Options. 
 a. Notice. Options may be exercised only by delivery to the Company of a written exercise
agreement approved by the Committee (which need not be the same for each Optionee), stating the number of shares of Common Stock being purchased, the restrictions imposed on the shares of Common Stock, if any, and such representations and agreements
regarding the Optionee’s investment intent and access to information and other matters, if any, as may be required by the Company to comply with applicable securities laws, or as may be deemed appropriate by the Company in connection with the
issuance of shares of Common Stock upon exercise of the Option, together with payment in full of the exercise price for the number of shares of Common Stock being purchased. Such exercise agreement may be part of an Optionee’s Option Agreement.

 b. Early Exercise. An Option Agreement may, but need not, include a provision that permits the Optionee to elect at any time while
an Employee, Director or Consultant, to exercise any part or all of the Option prior to full vesting of the Option. Any unvested shares of Common Stock received pursuant to such exercise may be subject to a repurchase right in favor of the Company
or an Affiliate or to any other restriction the Committee determines to be appropriate 
 c. Payment. Payment for the shares of Common
Stock to be purchased upon exercise of an Option may be made in cash (by check) or, where approved by the Committee in its sole discretion at the date of grant and stated in the Option Agreement and where permitted by law: (i) by surrender for
cancellation of Qualifying Shares at the Fair Market Value per share at the time of exercise (provided that such surrender does not result in an accounting charge for the Company); (ii) by delivery of the Optionee’s promissory note with
such recourse, interest, security, redemption and other provisions as the Committee may require; (iii) if a public market for the Common Stock exists, through a “same day sale” commitment from the Optionee and a broker-dealer that is
a member of the National Association of Securities Dealers, Inc. (an “NASD Dealer”) whereby the Optionee irrevocably elects to exercise the Option and to sell a portion of the shares of Common Stock so purchased to pay for the exercise
price and whereby the NASD Dealer irrevocably commits upon receipt of such shares of Common Stock to forward the exercise price directly to the Company; (iv) if a public market for the Common Stock exists, through a “margin”
commitment from the Optionee and an NASD Dealer whereby the Optionee irrevocably elects to exercise the Option and to pledge the shares of Common Stock so 

 
purchased to the NASD Dealer in a margin account as security for a loan from the NASD Dealer in the amount of the exercise price, and whereby the NASD Dealer
irrevocably commits upon receipt of such shares of Common Stock to forward the exercise price directly to the Company; or (v) by any combination of the foregoing. No shares of Common Stock may be issued until full payment of the purchase price
therefor has been made. 
 d. Withholding Taxes. The Committee may establish such rules and procedures as it considers desirable in
order to satisfy any obligation of the Company to withhold the statutory prescribed minimum amount of federal or state income taxes or other taxes with respect to the exercise of any Option granted under the Plan. Prior to issuance of the shares of
Common Stock upon exercise of an Option, the Optionee shall pay or make adequate provision acceptable to the Committee for the satisfaction of the statutory minimum prescribed amount of any federal or state income or other tax withholding
obligations of the Company, if applicable. Upon exercise of an Option, the Company shall withhold or collect from the Optionee an amount sufficient to satisfy such tax withholding obligations. 
 e. Exercise of Option Following Termination of Continuous Service. 
 i. An Option may not be exercised after the expiration date of such Option set forth in the Option Agreement and may be exercised following the termination of an Optionee’s Continuous Service only to the extent
provided in the Option Agreement. 
 ii. Where the Option Agreement permits an Optionee to exercise an Option following the termination of
the Optionee’s Continuous Service for a specified period, the Option shall terminate to the extent not exercised on the last day of the specified period or the last day of the original term of the Option, whichever occurs first. 
 iii. Any Option designated as an Incentive Stock Option, to the extent not exercised within the time permitted by law for the exercise of Incentive
Stock Options following the termination of an Optionee’s Continuous Service, shall convert automatically to a Non-Qualified Stock Option and thereafter shall be exercisable as such to the extent exercisable by its terms for the period specified
in the Option Agreement. 
 iv. The Committee shall have discretion to determine whether the Continuous Service of an Optionee has
terminated and the effective date on which such Continuous Service terminates and whether the Optionee’s Continuous Service terminated as a result of the Disability of the Optionee. 
 f. Limitations on Exercise. 
 i. The
Committee may specify a reasonable minimum number of shares of Common Stock or a percentage of the shares subject to an Option that may be purchased on any exercise of an Option; provided, that such minimum number will not prevent Optionee from
exercising the full number of shares of Common Stock as to which the Option is then exercisable. 
 ii. The obligation of the Company to
issue any shares of Common Stock pursuant to the exercise of any Option shall be subject to the condition that such exercise 

 
and the issuance and delivery of such shares pursuant thereto comply with the Securities Act, all applicable state securities laws and the requirements of
any stock exchange or national market system upon which the shares of Common Stock may then be listed or quoted, as in effect on the date of exercise. The Company shall be under no obligation to register the shares of Common Stock with the
Securities and Exchange Commission or to effect compliance with the registration, qualification or listing requirements of any state securities laws or stock exchange or national market system, and the Company shall have no liability for any
inability or failure to do so. 
 iii. As a condition to the exercise of an Option, the Company may require the person exercising such
Option to represent and warrant at the time of any such exercise that the shares of Common Stock are being purchased only for investment and without any present intention to sell or distribute such shares of Common Stock if, in the opinion of
counsel for the Company, such a representation is required by any securities or other applicable laws. 
 8. Restrictions on Shares.
At the discretion of the Committee, the Company may require an Optionee to become a party to agreement(s) containing (a) a right of first refusal to purchase all shares of Common Stock that an Optionee (or a permitted transferee, if applicable) may
propose to transfer to a third party and/or (b) a right to repurchase all or a portion of the shares of Common Stock held by an Optionee upon and after termination of the Optionee’s Continuous Service for any reason within a specified date as
determined by the Committee, and/or (c) a voting and/or stock ownership agreement and/or (d) such other provisions as the Committee shall determine in its sole discretion are appropriate. 
 9. Modification, Extension And Renewal of Options. The Committee shall have the power to modify, extend or renew outstanding Options and to
authorize the grant of new Options in substitution therefor, provided that (except as permitted by Section 11) any such action may not, without the written consent of any Optionee, impair any rights under any Option previously granted to such
Optionee. Any outstanding Incentive Stock Option that is modified, extended, renewed or otherwise altered will be treated in accordance with Section 424(h) of the Code. 
 10. Privileges of Stock Ownership. No Optionee will have any of the rights of a stockholder with respect to any shares of Common Stock subject to an Option until such Option is properly exercised and the
purchased shares are issued and delivered to the Optionee, as evidenced by an appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company. No adjustment shall be made for dividends or distributions or other
rights for which the record date is prior to such date of issuance and delivery, except as provided in the Plan. To the extent required to comply with any federal or state securities laws, the Company shall, during the term of each Option, provide
to the Optionee thereunder and each person owning shares purchased through the Plan with financial statements at least annually, unless the Optionee or the stockholder is an Employee whose duties in connection with the Company assure access to
equivalent information. 

 11. Adjustment Upon Changes in Capitalization and Corporate Events. 
 a. Capital Adjustments. The number of shares of Common Stock covered by each outstanding Option granted under the Plan and the Option price may be
adjusted to reflect, as deemed appropriate by the Committee, any increase or decrease in the number of outstanding shares of Common Stock resulting from a stock dividend, stock split, reverse stock split, combination, reclassification or similar
change in the capital structure of the Company without receipt of consideration, subject to any required action by the Board or the stockholders of the Company and compliance with applicable securities laws; provided, however, that a fractional
share will not be issued upon exercise of any Option, and either (i) any fraction of a share of Common Stock that would have resulted will be cashed out at Fair Market Value or (ii) the number of shares of Common Stock issuable under the
Option will be rounded up to the nearest whole number, as determined by the Committee; and provided further that the exercise price may not be decreased to below the par value, if any, for the shares of Common Stock as adjusted pursuant to this
Section 11(a). Except as the Committee determines, no issuance by the Company of shares of capital stock of any class, or securities convertible into shares of capital stock of any class, shall affect, and no adjustment by reason hereof shall
be made with respect to, the number or price of shares of Common Stock subject to an Option. 
 b. Dissolution or Liquidation. The
Committee shall notify the Optionee at least twenty (20) days prior to any proposed dissolution or liquidation of the Company. Unless provided otherwise in an individual Option Agreement, to the extent that an Option has not been previously
exercised, such Option shall terminate immediately prior to consummation of such dissolution or liquidation. 
 c. Merger, Asset Sale, and
Change in Control. If, during the term of the Plan (i) the Company shall sell (in one transaction or in a series of related transactions) all or substantially all of its assets to a person or entity that is not an “affiliate”, as
defined in Rule 405 promulgated under the Securities Act, of the Company, (ii) the Company (or its successor) consummates a merger, consolidation, share exchange, or reorganization with another corporation or other legal entity and, as a result
of such merger, consolidation, share exchange, or reorganization, less than a majority of the combined voting power of the outstanding securities of the surviving entity (whether the Company or another entity) immediately after such transaction is
held in the aggregate by the holders of securities of the Company that were entitled to vote generally in the election of directors of the Company (or its successor) (“Voting Stock”) immediately before such transaction, or (iii) when
the Common Stock is traded in the over-the-counter market or on any securities exchange, pursuant to a tender offer or exchange offer for securities of the Company, or in any other manner, any “person” or “group,” as such terms
are used in Sections 13(d) and 14(d) of the Exchange Act, as amended (excluding the Company, a subsidiary of the Company or any employee benefit plan, or a related trust or the trustee thereof, sponsored or maintained by the Company or any
Affiliate), acquires “beneficial ownership” (within the meaning of Rule 13d-3 promulgated under the Exchange Act) of more than 50% of the Voting Stock (the surviving entity or purchaser described in this Section 11(c), the
“Purchaser”, and any such event described in this Section 11(c) a “Change in Control”), the Purchaser shall either assume the obligations of the Company under the outstanding Options or convert the outstanding Options into
options of at least equal value as to capital stock of the Purchaser. The Purchaser also may issue, in place of outstanding shares of Common Stock held by Optionee as a result of the exercise of an Option that is subject to repurchase, substantially
similar shares or other property subject to similar repurchase restrictions no less favorable to Optionee. 

 In the event such Purchaser refuses to assume or substitute Options, as provided above, pursuant to a
Change in Control, each Option which is at the time outstanding under the Plan shall (i) except as provided otherwise in an individual Option Agreement, automatically become, subject to all other terms of the Option Agreement, fully vested and
exercisable and be released from any repurchase or forfeiture rights, immediately prior to the specified effective date of such Change in Control, for all of the shares of Common Stock at the time represented by such Option, and
(ii) notwithstanding any contrary terms in the Option Agreement, expire on a date at least twenty (20) days after the Committee gives written notice to Optionees specifying the terms and conditions of such termination. 
 To the extent that an Optionee exercises an Option before or on the effective date of the Change in Control, the Company shall issue all Common Stock
purchased by exercise of that Option, and those shares of Common Stock shall be treated as issued and outstanding for purposes of the Change in Control. Upon a Change in Control, when the outstanding Options are not assumed by the Purchaser, the
Plan shall terminate and any unexercised Options outstanding under the Plan at that date shall terminate. 
 12. Stockholder Approval.
The Plan shall be submitted to the stockholders of the Company for approval within twelve (12) months before or after the date the Plan is adopted by the Board. The Committee may grant Options under the Plan prior to approval by the stockholders,
which Options will be effective when granted, but no such Option shall be exercisable until such approval is obtained. In the event that stockholder approval is not obtained within the twelve (12)-month period provided above, all Incentive Stock
Options previously granted under the Plan shall be exercisable as Non-Qualified Stock Options. In addition, the Board may determine from time to time that it is necessary or desirable to obtain the approval of either the Plan or an amendment to the
Plan by the Company’s stockholders to satisfy or comply with applicable law, including Sections 162(m) and 422 of the Code, or the rules of any stock exchange or national market system on which the Common Stock may be listed or quoted.

 13. Administration. The Plan shall be administered by the Committee. The Committee shall interpret the Plan and any Options granted
pursuant to the Plan and shall prescribe such rules and regulations in connection with the operation of the Plan as it determines to be advisable for the administration of the Plan. The Committee may rescind and amend its rules and regulations from
time to time. The interpretation by the Committee of any of the provisions of the Plan or any Option granted under the Plan shall be final and binding upon the Company and all persons having an interest in any Option or any shares of Common Stock
purchased pursuant to an Option. 
 14. Effect of Plan. Neither the adoption of the Plan nor any action of the Board or the Committee
shall be deemed to give any Employee, Director or Consultant any right to be granted an Option or any other rights except as may be evidenced by the Option Agreement, or any amendment thereto, duly authorized by the Committee and executed on behalf
of the Company, and then only to the extent and on the terms and conditions expressly set forth therein. The 

 
existence of the Plan and the Options granted hereunder shall not affect in any way the right of the Board, the Committee or the stockholders of the Company
to make or authorize any adjustment, recapitalization, reorganization or other change in the Company’s capital structure or its business, any merger or consolidation or other transaction involving the Company, any issue of bonds, debentures, or
shares of preferred stock ahead of or affecting the Common Stock or the rights thereof, the dissolution or liquidation of the Company or any sale or transfer of all or any part of the Company’s assets or business, or any other corporate act or
proceeding by or for the Company. Nothing contained in the Plan or in any Option Agreement or in other Option-related documents shall confer upon any Employee, Director or Consultant any right with respect to such person’s Continuous Service or
interfere or affect in any way with the right of the Company or an Affiliate to terminate such person’s Continuous Service at any time, with or without cause. 
 15. No Effect on Retirement and Other Benefit Plans. Except as specifically provided in a retirement or other benefit plan of the Company or an Affiliate, Options shall not be deemed compensation for purposes
of computing benefits or contributions under any retirement plan of the Company or an Affiliate, and shall not affect any benefits under any other benefit plan of any kind or any benefit plan subsequently instituted under which the availability or
amount of benefits is related to level of compensation. The Plan is not a “Retirement Plan” or “Welfare Plan” under the Employee Retirement Income Security Act of 1974, as amended. 
 16. Amendment or Termination of Plan. The Committee shall have the authority to amend any Option Agreement to include any provision which, at the
time of such amendment, is authorized under the terms of the Plan; however, no outstanding Options may be revoked or altered in a manner unfavorable to the Optionee without the written consent of the Optionee. Any termination of the Plan shall not
impair any of the rights of any Optionee whose Option is outstanding on the date of the Plan’s termination without the Optionee’s written consent. 
 17. Effective Date and Term of Plan. The Plan shall become effective June 11, 2001, which is the date of its adoption by the Board. It shall continue in effect for a term of ten (10) years from its adoption
date, unless sooner terminated by action of the Board. Subject to the terms and conditions of the Plan and applicable laws, Options may be granted under the Plan upon its adoption. 
 18. Severability and Reformation. The Company intends all provisions of the Plan to be enforced to the fullest extent permitted by law.
Accordingly, should a court of competent jurisdiction determine that the scope of any provision of the Plan is too broad to be enforced as written, the court should reform the provision to such narrower scope as it determines to be enforceable. If,
however, any provision of the Plan is held to be wholly illegal, invalid, or unenforceable under present or future law, such provision shall be fully severable and severed, and the Plan shall be construed and enforced as if such illegal, invalid, or
unenforceable provision were never a part hereof, and the remaining provisions of the Plan shall remain in full force and effect and shall not be affected by the illegal, invalid, or unenforceable provision or by its severance. 
 19. Governing Law. The Plan and all issues or matters relating to the Plan shall be governed by, determined and enforced under, and construed and
interpreted in accordance with the laws of the State of Texas. 

 20. Interpretive Matters. Whenever required by the context, pronouns and any variation thereof
shall be deemed to refer to the masculine, feminine, or neuter, and the singular shall include the plural, and visa versa. The term “include” or “including” does not denote or imply any limitation. The captions and headings used
in the Plan are inserted for convenience and shall not be deemed a part of the Plan for construction or interpretation. 

 PLAN HISTORY 
  

			
	June 11, 2001	  	Board adopts Plan, with an initial reserve of 2,421,000 shares.
		
	June 11, 2001	  	Stockholders approve Plan, with an initial reserve of 2,421,000 shares.
		
	April 29, 2002	  	Board approves amendment to Plan increasing reserve to 10,379,126 shares and effecting certain other amendments to Plan.
		
	April 29, 2002	  	Stockholders approve amendment to Plan increasing reserve to 10,379,126 shares and effecting certain other amendments to Plan.
		
	October 17, 2002	  	Board approves amendment to Plan to adjust share reserve to 2,000,058 shares to account for a reverse stock split.
		
	October 17, 2002	  	Stockholders approve amendment to Plan to adjust share reserve to 2,000,058 shares to account for a reverse stock split.
		
	May 20, 2003	  	Board approves amendment and restatement of Plan increasing reserve to 3,352,465 shares.
		
	May 20, 2003	  	Stockholders approve amendment and restatement of Plan increasing reserve to 3,352,465 shares.
		
	October 19, 2005	  	Board and stockholders approve amendment of Plan to increase the reserve to 5,377,885 shares.

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