2006 Equity Incentive Plan

ACCEPTED BY:

ZOGENIX, INC.

SUBMITTED BY

PARTICIPANT:

1.1 General. The purpose of the Zogenix, Inc. 2006 Equity Incentive Plan (the “Plan”) is to promote the success and enhance the value of Zogenix, Inc., a Delaware corporation (the “Company”), by linking the personal interests of the members of the Board, Employees and Consultants of the Company and any Parent or Subsidiary, to those of Company stockholders and by providing such individuals with an incentive for performance to generate returns to Company stockholders. The Plan is further intended to provide flexibility to the Company in its ability to motivate, attract, and retain the services of members of the Board, Employees and Consultants of the Company and any Parent or Subsidiary upon whose judgment, interest, and special effort the successful conduct of the Company’s operation is largely dependent.

2.1 Definitions. The following words and phrases shall have the following meanings:

(a) “Administrator” means the Board or a committee of the Board as described in Article 12.

(b) “Award” means an Option, a Restricted Stock award, a Stock Appreciation Right award, a Dividend Equivalents award, a Stock Payment award, or a Restricted Stock Unit award granted to a Participant pursuant to the Plan.

(c) “Award Agreement” means any written or electronic agreement, contract, or other instrument or document evidencing an Award.

(e) “Cause,” unless otherwise defined in an employment or services agreement between the Participant and the Company or any Parent or Subsidiary, means (i) a Participant’s breach of any confidentiality or proprietary information agreement between the Participant and the Company or any Parent or Subsidiary; (ii) a Participant’s conviction by, or entry of a plea of guilty or nolo contendere in, a court of competent and final jurisdiction for any crime involving moral turpitude or punishable by imprisonment in the jurisdiction involved; (iii) a Participant’s commission of an act of fraud, whether prior to or subsequent to the date hereof upon the Company or any Parent or Subsidiary; (iv) a Participant’s continuing repeated willful failure or refusal to perform his or her duties (including, without limitation, a Participant’s inability to perform his or her duties as a result of chronic alcoholism or drug addiction and/or as a result of any failure to comply with any laws, rules or regulations of any governmental entity with respect to a Participant’s employment by the Company or any Parent or Subsidiary); (v) a Participant’s gross negligence, insubordination or material violation of any duty of loyalty to the Company or any Parent or Subsidiary or any other material misconduct on the part of a Participant; (vi) a Participant’s intentional commission of any act which he or she knows (or reasonably should know) is likely to be materially detrimental to the Company’s or any Parent’s or Subsidiary’s business or goodwill; or (vii) a Participant’s material breach of any other provision of any agreement between the Participant and the Company or any Parent or Subsidiary, provided that termination of a Participant’s employment pursuant to this subsection (vii) shall not constitute valid termination for good cause unless such Participant shall have first received written notice from the Board or its designee stating with specificity the nature of such breach and affording the Participant at least fifteen days to correct the breach alleged.

The foregoing definition shall not in any way preclude or restrict the right of the Company or any successor or Parent or Subsidiary thereof to discharge or dismiss any Participant in the service of such entity for any other acts or omissions, but such other acts or omissions shall not be deemed, for purposes of this Plan, to constitute grounds for termination for Cause.

(i) the acquisition, directly or indirectly, by any “person” or “group” (as those terms are defined in Sections 3(a)(9), 13(d), and 14(d) of the Exchange Act and the rules thereunder) of “beneficial ownership” (as determined pursuant to Rule 13d-3 under the Exchange Act) of securities entitled to vote generally in the election of directors (“voting securities”) of the Company that represent 50% or more of the combined voting power of the Company’s then outstanding voting securities, other than:

(A) an acquisition by a trustee or other fiduciary holding securities under any employee benefit plan (or related trust) sponsored or maintained by the Company or any person controlled by the Company or by any employee benefit plan (or related trust) sponsored or maintained by the Company or any person controlled by the Company, or

(B) an acquisition of voting securities by the Company or a corporation owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as their ownership of the stock of the Company, or

(C) an acquisition of voting securities pursuant to a transaction described in subsection (iii) below that would not be a Change in Control under subsection (iii);

Notwithstanding the foregoing, the following event shall not constitute an “acquisition” by any person or group for purposes of this Section 2.1(e): an acquisition of the Company’s securities by the Company which causes the Company’s voting securities beneficially owned by a person or group to represent 50% or more of the combined voting power of the Company’s then outstanding voting securities; provided, however, that if a person or group shall become the beneficial owner of 50% or more of the combined voting power of the Company’s then outstanding voting securities by reason of share acquisitions by the Company as described above and shall, after such share acquisitions by the Company, become the beneficial owner of any additional voting securities of the Company, then such acquisition shall constitute a Change in Control; or

(ii) during any period of two consecutive years, individuals who, at the beginning of such period, constitute the Board together with any new director(s) (other than a director designated by a person who shall have entered into an agreement with the Company to effect a transaction described in subsections (a) or (c) of this Section 2.1(e)) whose election by the Board or nomination for election by the Company’s stockholders was approved by a vote of at least two-thirds of the directors then still in office who either were directors at the beginning of the two year period or whose election or nomination for election was previously so approved, cease for any reason to constitute a majority thereof; or

(iii) the consummation by the Company (whether directly involving the Company or indirectly involving the Company through one or more intermediaries) of a merger, consolidation, reorganization, or business combination, a sale or other disposition of all or substantially all of the Company’s assets, or the acquisition of assets or stock of another entity, in each case, other than a transaction

(A) which results in the Company’s voting securities outstanding immediately before the transaction continuing to represent (either by remaining outstanding or by being converted into voting securities of the Company or the person that, as a result of the transaction, controls, directly or indirectly, the Company or owns, directly or indirectly, all or substantially all of the Company’s assets or otherwise succeeds to the business of the Company (the Company or such person, the “Successor Entity”)) directly or indirectly, at least 50% of the combined voting power of the Successor Entity’s outstanding voting securities immediately after the transaction, and

(B) after which no person or group beneficially owns voting securities representing 50% or more of the combined voting power of the Successor Entity; provided, however, that no person or group shall be treated for purposes of this paragraph (iii) as beneficially owning 50% or more of combined voting power of the Successor Entity solely as a result of the voting power held in the Company prior to the consummation of the transaction; or

(iv) the Company’s stockholders approve a liquidation or dissolution of the Company.

For purposes of subsection (i) above, the calculation of voting power shall be made as if the date of the acquisition were a record date for a vote of the Company’s stockholders, and for purposes of subsection (iii) above, the calculation of voting power shall be made as if the date of the consummation of the transaction were a record date for a vote of the Company’s stockholders.

Notwithstanding the foregoing, a transaction shall not constitute a “Change of Control” if: (i) its sole purpose is to change the state of the Company’s incorporation; (ii) its sole purpose is to create a holding company that will be owned in substantially the same proportions by the persons who held the Company’s securities immediately before such transaction; (iii) it constitutes the Company’s initial public offering of its securities; or (iv) it is a transaction effected primarily for the purpose of financing the Company with cash (as determined by the Administrator in its discretion and without regard to whether such transaction is effectuated by a merger, equity financing or otherwise).

The Administrator shall have full and final authority, which shall be exercised in its sole discretion, to determine conclusively whether a Change in Control of the Company has occurred pursuant to the above definition, and the date of the occurrence of such Change in Control and any incidental matters relating thereto.

(g) “Code” means the Internal Revenue Code of 1986, as amended from time to time, and the regulations issued thereunder.

(h) “Committee” means a committee of the Board described in Article 12.

(i) The consultant or adviser renders bona fide services to the Company or any Parent or Subsidiary;

(ii) The services rendered by the consultant or adviser are not in connection with the offer or sale of securities in a capital-raising transaction and do not directly or indirectly promote or maintain a market for the Company’s securities; and

(iii) The consultant or adviser is a natural person who has contracted directly with the Company or any Parent or Subsidiary to render such services.

(j) “Disability” means a permanent and total disability within the meaning of Section 22(e)(3) of the Code, as it may be amended from time to time.

(k) “Dividend Equivalents” means a right granted to a Participant pursuant to Article 8 to receive the equivalent value (in cash or Stock) of dividends paid on Stock.

(l) “Eligible Individual” means any person who is a member of the Board, a Consultant or an Employee, as determined by the Administrator.

(m) “Employee” means any officer or other employee (as defined in accordance with Section 3401(c) of the Code) of the Company or any Parent or Subsidiary.

(n) “Equity Restructuring” means a non-reciprocal transaction between the Company and its stockholders, such as a stock dividend, stock split, spin-off, rights offering or recapitalization through a large, nonrecurring cash dividend, that affects the shares of Stock (or other securities of the Company) or the share price of Stock (or other securities) and causes a change in the per share value of the Stock underlying outstanding Awards.

(o) “Exchange Act” means the Securities Exchange Act of 1934, as amended from time to time.

(p) “Fair Market Value” means, as of any date, the value of Stock determined as follows:

(i) If the Stock is listed on any established stock exchange or a national market system, including without limitation the Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its Fair Market Value shall be the closing sales price for such Stock as quoted on such exchange or system for the last market trading day prior to the date of determination for which a closing sales price is reported, as reported in The Wall Street Journal or such other source as the Administrator deems reliable;

(ii) If the Stock is regularly quoted by a recognized securities dealer but selling prices are not reported, its Fair Market Value shall be the mean of the closing bid and asked prices for the Stock on the date prior to the date 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 Stock, the Fair Market Value thereof shall be determined in good faith by the Administrator.

(q) “Good Reason” means a Participant’s voluntary resignation following any one or more of the following that is effected without the Participant’s written consent: (i) a change in his or her position following the Change in Control that materially reduces his or her duties or responsibilities, (ii) a reduction in his or her base salary following a Change in Control, unless the base salaries of all similarly situated individuals are similarly reduced, or (iii) a relocation of such Participant’s place of employment of more than fifty miles following a Change in Control. However, if the term or concept of “Good Reason” has been defined in an agreement between a Participant and the Company or any successor or parent or Subsidiary thereof, then “Good Reason” shall have the definition set forth in such agreement.

(r) “Incentive Stock Option” means an Option that is intended to be an incentive stock option and meets the requirements of Section 422 of the Code or any successor provision thereto.

(s) “Misconduct” means the commission of any commission of any act of fraud, embezzlement or dishonesty by the Participant, any unauthorized use or disclosure by such person of confidential information or trade secrets of the Company (or any Parent or Subsidiary), or any other intentional misconduct by such person adversely affecting the business or affairs of the Company (or any Parent or Subsidiary) in a material manner. The foregoing definition shall not in any way preclude or restrict the right of the Company (or any Parent or Subsidiary) to discharge or dismiss any Participant or other person in the service of the Company (or any Parent or Subsidiary) for any other acts or omissions, but such other acts or omissions shall not be deemed, for purposes of the Plan, to constitute grounds for termination for Misconduct.

(t) “Non-Employee Director” means a member of the Board who is not an Employee.

(u) “Non-Qualified Stock Option” means an Option that is not intended to be or otherwise does not qualify as an Incentive Stock Option.

(v) “Option” means a right granted to a Participant pursuant to Article 5 of the Plan to purchase a specified number of shares of Stock at a specified price during specified time periods. An Option may be either an Incentive Stock Option or a Non-Qualified Stock Option.

(w) “Parent” means any corporation in an unbroken chain of corporations ending with the Company if each of the corporations other than the Company then owns stock possessing 50% or more of the total combined voting power of all classes of stock in one of the other corporations in such chain at the relevant time, including after the Effective Date (as defined in Section 13.1).

(x) “Participant” means any Eligible Individual who, as a member of the Board, an Employee or a Consultant, has been granted an Award pursuant to the Plan.

(y) “Plan” means this Zogenix, Inc. 2006 Equity Incentive Plan, as it may be amended from time to time.

(z) “Public Trading Date” means the first date upon which the issuer is subject to the reporting requirements of Section 13 or 15(d)(2) of the Exchange Act.

(aa) “Restricted Stock” means Stock awarded to a Participant pursuant to Article 6 that is subject to certain restrictions and may be subject to risk of forfeiture or repurchase.

(bb) “Restricted Stock Unit” means a right to receive a share of Stock during specified time periods granted pursuant to Section 8.3.

(cc) “Securities Act” means the Securities Act of 1933, as amended from time to time.

(ee) “Stock” means the common stock of the Company and such other securities of the Company that may be substituted for Stock pursuant to Article 11.

(ff) “Stock Appreciation Right” or “SAR” means a right granted pursuant to Article 7 to receive a payment equal to the excess of the Fair Market Value of a specified number of shares of Stock on the date the SAR is exercised over the Fair Market Value of such number of shares of Stock on the date the SAR was granted as set forth in the applicable Award Agreement.

(gg) “Stock Payment” means (a) a payment in the form of shares of Stock, or (b) an option or other right to purchase shares of Stock, as part of any bonus, deferred compensation or other arrangement, made in lieu of all or any portion of the compensation, granted pursuant to Section 8.2.

(hh) “Subsidiary” means any corporation or other entity of which a majority of the outstanding voting stock or voting power is beneficially owned directly or indirectly by the Company at the relevant time, including after the Effective Date (as defined in Section 13.1).

(ii) “Successor Entity” has the meaning set forth in Section 2.1(f)(iii).

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

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

(ll) “Termination of Employment” shall mean the time when the employee-employer relationship between a Participant and the Company or any Parent or Subsidiary is terminated for any reason, with or without cause, including, but not by way of limitation, a termination by resignation, discharge, death, disability or retirement; but excluding: (a) terminations where there is a simultaneous reemployment or continuing employment of a Participant by the Company or any Parent or Subsidiary, (b) at the discretion of the Administrator, terminations which result in a temporary severance of the employee-employer relationship, and (c) terminations which are followed by the simultaneous establishment of a consulting relationship by the Company or a Parent or Subsidiary with the former employee. The Administrator, in its absolute discretion, shall determine the effect of all matters and questions relating to Termination of Employment, including, but not by way of limitation, the question of whether a Termination of Employment resulted from a discharge for good cause, and all questions of whether a particular leave of absence constitutes a Termination of Employment.

(ii) “Termination of Service” shall mean the last to occur of a Participant’s Termination of Employment, Termination of Directorship or Termination of Consultancy. A Participant shall not be deemed to have a Termination of Service merely because of a change in the capacity in which the Participant renders service to the Company or any Parent or Subsidiary (i.e., a Participant who is an Employee becomes a Consultant) or a change in the entity for which the Participant renders such service (i.e., an Employee of the Company becomes an Employee of a Subsidiary), unless following such change in capacity or service the Participant is no longer serving as an Employee, Non-Employee Director or Consultant of the Company or any Parent or Subsidiary.

(a) Subject to Article 11, the aggregate number of shares of Stock which may be issued or transferred pursuant to Awards under the Plan shall be 20,340,000 shares.

(b) To the extent that an Award terminates, expires, or lapses for any reason, any shares of Stock subject to the Award shall again be available for the grant of an Award pursuant to the Plan. Additionally, any shares of Stock tendered or withheld to satisfy the grant or exercise price or tax withholding obligation pursuant to any Award shall again be available for the grant of an Award pursuant to the Plan. If shares of Stock issued pursuant to Awards are forfeited by a Participant or repurchased by the Company pursuant to Section 6.3 hereof, such shares of Stock shall become available for future grant under the Plan (unless the Plan has terminated). The payment of Dividend Equivalents in cash in conjunction with any outstanding Awards shall not be counted against the shares available for issuance under the Plan.

(c) Notwithstanding the provisions of this Section 3.1, no shares of Stock may again be optioned, granted or awarded if such action would cause an Incentive Stock Option to fail to qualify as an Incentive Stock Option under Section 422 of the Code.

3.2 Stock Distributed. Any Stock distributed pursuant to an Award may consist, in whole or in part, of authorized and unissued Stock, treasury Stock or, on and after the Public Trading Date, Stock purchased on the open market.

4.1 Eligibility. Persons eligible to participate in this Plan include all Employees, Consultants and all members of the Board, as determined by the Administrator.

4.2 Actual Participation. Subject to the provisions of the Plan, the Administrator may, from time to time, select from among all Eligible Individuals those to whom Awards shall be granted and shall determine the nature and amount of each Award. No individual shall have any right to be granted an Award pursuant to this Plan.

4.3 Foreign Participants. Notwithstanding any provision of the Plan to the contrary, in order to comply with the laws in other countries in which the Company and its Parents or Subsidiaries operate or have Eligible Individuals, the Administrator, in its sole discretion, shall have the power and authority to: (i) determine which Parents or Subsidiaries shall be covered by the Plan; (ii) determine which Eligible Individuals outside the United States are eligible to participate in the Plan; (iii) modify the terms and conditions of any Award granted to Eligible Individuals outside the United States to comply with applicable foreign laws; (iv) establish subplans and modify exercise procedures and other terms and procedures, to the extent such actions may be necessary or advisable (any such subplans and/or modifications shall be attached to this Plan as appendices); provided, however, that no such subplans and/or modifications shall increase the share limitation contained in Section 3.1 of the Plan; and (v) take any action, before or after an Award is made, that it deems advisable to obtain approval or comply with any necessary local governmental regulatory exemptions or approvals. Notwithstanding the foregoing, the Administrator may not take any actions hereunder, and no Awards shall be granted, that would violate the Exchange Act, the Code, any securities law or governing statute or any other applicable law.

5.1 General. The Administrator is authorized to grant Options to Eligible Individuals on the following terms and conditions:

(a) Exercise Price. The exercise price per share of Stock subject to an Option shall be determined by the Administrator and set forth in the Award Agreement; provided that the exercise price per share for any Option shall not be less than 100% of the Fair Market Value per share of the Stock on the date of the grant.

(b) Time and Conditions of Exercise. The Administrator shall determine the time or times at which an Option may be exercised in whole or in part; provided that the term of any Option granted under the Plan shall not exceed ten years. The Administrator shall also determine the performance or other conditions, if any, that must be satisfied before all or part of an Option may be exercised. The Administrator may extend the term of any outstanding Option in connection with any Termination of Employment, Termination of Directorship or Termination of Consultancy of the Participant holding such Option, or amend any other term or condition of such Option relating to such a Termination of Employment, Termination of Directorship or Termination of Consultancy.

(c) Payment. The Administrator shall determine the methods, terms and conditions by which the exercise price of an Option may be paid, and the form and manner of payment, including, without limitation, payment in the form of cash, a promissory note bearing interest at no less than such rate as shall then preclude the imputation of interest under the Code, shares of Stock previously owned by the Participant or otherwise issuable upon exercise of the Option, or other property acceptable to the Administrator and payment through the delivery of a notice that the Participant has placed a market sell order with a broker with respect to shares of Stock then issuable upon exercise of the Option, and that the broker has been directed to pay a sufficient portion of the net proceeds of the sale to the Company in satisfaction of the Option exercise price; provided that payment of such proceeds is then made to the Company upon settlement of such sale, and the methods by which shares of Stock shall be delivered or deemed to be delivered to Participants. Notwithstanding any other provision of the Plan to the contrary, no Participant who is a member of the Board or an “executive officer” of the Company within the meaning of Section 13(k) of the Exchange Act shall be permitted to pay the exercise price of an Option, or continue any extension of credit with respect to the exercise price of an Option with a loan from the Company or a loan arranged by the Company, in any method which would violate Section 13(k) of the Exchange Act.

(d) Evidence of Grant. All Options shall be evidenced by an Award Agreement between the Company and the Participant. The Award Agreement shall include such additional provisions as may be specified by the Administrator.

5.2 Incentive Stock Options. Incentive Stock Options may be granted only to employees (as defined in accordance with Section 3401(c) of the Code) of the Company or a Subsidiary which constitutes a “subsidiary corporation” of the Company within Section 424(f) of the Code or a Parent which constitutes a “parent corporation” of the Company within the meaning of Section 424(e) of the Code and the terms of any Incentive Stock Options granted pursuant to the Plan must comply with the following additional provisions of this Section 5.2 in addition to the requirements of Section 5.1:

(a) Ten Percent Owners. An Incentive Stock Option shall be granted to any individual who, at the date of grant, owns stock possessing more than ten percent of the total combined voting power of all classes of stock of the Company or any “subsidiary corporation” of the Company or “parent corporation” of the Company (each within the meaning of Section 424 of the Code) only if such Option is granted at an exercise price per share that is not less than 110% of the Fair Market Value per share of the Stock on the date of the grant and the Option is exercisable for no more than five years from the date of grant.

(b) Transfer Restriction. An Incentive Stock Option shall not be transferable by the Participant other than by will or by the laws of descent or distribution.

(c) Right to Exercise. During a Participant’s lifetime, an Incentive Stock Option may be exercised only by the Participant.

(d) Failure to Meet Requirements. Any Option (or portion thereof) purported to be an Incentive Stock Option which, for any reason, fails to meet the requirements of Section 422 of the Code shall be considered a Non-Qualified Stock Option.

5.3 Early Exercisability. The Administrator may provide in the terms of a Participant’s Award Agreement that the Participant may, at any time before the Participant’s status as an Employee, member of the Board or Consultant terminates, exercise the Option(s) granted to such Participant in whole or in part prior to the full vesting of the Option(s); provided, however, shares of Stock acquired upon exercise of an Option which has not fully vested may be subject to any forfeiture, transfer or other restrictions as the Administrator may determine in its sole discretion.

5.4 Paperless Exercise. In the event that the Company establishes, for itself or using the services of a third party, an automated system for the exercise of Options, such as a system using an internet website or interactive voice response, then the paperless exercise of Options by a Participant may be permitted through the use of such an automated system.

6.1 Grant of Restricted Stock. The Administrator is authorized to make Awards of Restricted Stock to any Eligible Individual selected by the Administrator in such amounts and subject to such terms and conditions as determined by the Administrator. All Awards of Restricted Stock shall be evidenced by an Award Agreement.

6.2 Issuance and Restrictions. Restricted Stock shall be subject to such repurchase restrictions, forfeiture restrictions, restrictions on transferability and other restrictions as the Administrator may impose (including, without limitation, limitations on the right to vote Restricted Stock or the right to receive dividends on the Restricted Stock). These restrictions may lapse separately or in combination at such times, pursuant to such circumstances or in such installments or otherwise as the Administrator determines at the time of the grant of the Award or thereafter.

6.3 Repurchase or Forfeiture. Except as otherwise determined by the Administrator at the time of the grant of the Award or thereafter, upon a Participant’s Termination of Service during the applicable restriction period, Restricted Stock that is at that time subject to restrictions shall be forfeited or subject to repurchase by the Company (or its assignee) under such terms as the Administrator shall determine; provided, however, that the Administrator may (a) provide in any Restricted Stock Award Agreement that restrictions or forfeiture conditions relating to Restricted Stock will be waived in whole or in part in the event of a Participant’s Termination of Service, and (b) in other cases waive in whole or in part restrictions or forfeiture conditions relating to Restricted Stock.

6.4 Certificates for Restricted Stock. Restricted Stock granted pursuant to the Plan may be evidenced in such manner as the Administrator shall determine. If certificates representing shares of Restricted Stock are registered in the name of the Participant, certificates must bear an appropriate legend referring to the terms, conditions, and restrictions applicable to such Restricted Stock, and the Company may, at its discretion, retain physical possession of the certificate until such time as all applicable restrictions lapse or the Award Agreement may provide that the shares shall be held in escrow by an escrow agent designated by the Company.

7.1 Grant of Stock Appreciation Rights. A Stock Appreciation Right may be granted to any Eligible Individual selected by the Administrator. A Stock Appreciation Right shall be subject to such terms and conditions not inconsistent with the Plan as the Administrator shall impose and shall be evidenced by an Award Agreement.

(a) A Stock Appreciation Right shall have a term set by the Administrator. A Stock Appreciation Right shall be exercisable in such installments as the Administrator may determine. A Stock Appreciation Right shall cover such number of shares of Stock as the Administrator may determine. The exercise price per share of Stock subject to each Stock Appreciation Right shall be set by the Administrator.

(b) A Stock Appreciation Right shall entitle the Participant (or other person entitled to exercise the Stock Appreciation Right pursuant to the Plan) to exercise all or a specified portion of the Stock Appreciation Right (to the extent then exercisable pursuant to its terms) and to receive from the Company an amount determined by multiplying (i) the amount (if any) by which the Fair Market Value of a share of Stock on the date of exercise of the Stock Appreciation Right exceeds the exercise price per share of the Stock Appreciation Right, by (ii) the number of shares of Stock with respect to which the Stock Appreciation Right shall have been exercised, subject to any limitations the Administrator may impose.

(a) Subject to Sections 7.3(b) and (c), payment of the amounts determined under Section 7.2(b) above shall be in cash, in Stock (based on its Fair Market Value as of the date the Stock Appreciation Right is exercised) or a combination of both, as determined by the Administrator.

(b) To the extent payment for a Stock Appreciation Right is to be made in cash, the Award Agreement shall, to the extent necessary to comply with the requirements of Section 409A of the Code, specify the date of payment, which may be different than the date of exercise of the Stock Appreciation Right. If the date of payment for a Stock Appreciation Right is later than the date of exercise, the Award Agreement may specify that the Participant be entitled to earnings on such amount until paid.

(c) To the extent any payment under Section 7.2(b) is effected in Stock, it shall be made subject to satisfaction of all provisions of Article 5 above pertaining to Options.

8.1 Dividend Equivalents. Any Eligible Individual selected by the Administrator may be granted Dividend Equivalents based on the dividends declared on the shares of Stock that are subject to any Award, to be credited as of dividend payment dates, during the period between the date the Award is granted and the date the Award is exercised, vests or expires, as determined by the Administrator. Such Dividend Equivalents shall be converted to cash or additional shares of Stock by such formula and at such time and subject to such limitations as may be determined by the Administrator.

8.2 Stock Payments. Any Eligible Individual selected by the Administrator may receive Stock Payments in the manner determined from time to time by the Administrator; provided that, unless otherwise determined by the Administrator, such Stock Payments shall be made in lieu of base salary, bonus or other cash compensation otherwise payable to such Eligible Individual. The number of shares shall be determined by the Administrator and may be based upon the Performance Goals or other specific performance goals determined appropriate by the Administrator.

8.3 Restricted Stock Units. The Administrator is authorized to make Awards of Restricted Stock Units to any Eligible Individual selected by the Administrator in such amounts and subject to such terms and conditions as determined by the Administrator. At the time of grant, the Administrator shall specify the date or dates on which the Restricted Stock Units shall become fully vested and nonforfeitable, and may specify such conditions to vesting as it deems appropriate. Alternatively, Restricted Stock Units may become fully vested and nonforfeitable pursuant to the satisfaction of one or more Performance Goals or other specific performance goals as the Administrator determines to be appropriate at the time of the grant of the Restricted Stock Units or thereafter, in each case on a specified date or dates or over any period or periods determined by the Administrator. At the time of grant, the Administrator shall specify the maturity date applicable to each grant of Restricted Stock Units which shall be no earlier than the vesting date or dates of the Award and, to the extent permitted by the Administrator, may be determined at the election of the Eligible Individual to whom the Award is granted. On the maturity date, the Company shall transfer to the Participant one unrestricted, fully transferable share of Stock for each Restricted Stock Unit that is vested and scheduled to be distributed on such date and not previously forfeited. The Administrator shall specify the purchase price, if any, to be paid by the Participant to the Company for such shares of Stock.

8.4 Term. Except as otherwise provided herein, the term of any Award of Performance Shares, Dividend Equivalents, Stock Payments or Restricted Stock Units shall be set by the Administrator in its discretion.

8.5 Exercise or Purchase Price. The Administrator may establish the exercise or purchase price, if any, of any Award of Restricted Stock Units or Stock Payments; provided, however, that such price shall not be less than the par value of a share of Stock on the date of grant, unless otherwise permitted by applicable state law.

8.6 Form of Payment. Payments with respect to any Awards granted under Sections 8.1, 8.2 or 8.3 shall be made in cash, in Stock or a combination of both, as determined by the Administrator.

8.7 Award Agreement. All Awards under this Article 8 shall be subject to such additional terms and conditions as determined by the Administrator and shall be evidenced by a written Award Agreement.

9.1 Awards subject to Code Section 409A. Any Award that constitutes, or provides for, a deferral of compensation subject to Section 409A of the Code (a “Section 409A Award”) shall satisfy the requirements of Section 409A of the Code and this Article 9, to the extent applicable. The Award Agreement with respect to a Section 409A Award shall incorporate the terms and conditions required by Section 409A of the Code and this Article 9.

(a) Subject to subsection (b), any shares of Stock or other property or amounts to be paid or distributed upon the grant, issuance, vesting, exercise or payment of a Section 409A Award shall be distributed in accordance with the requirements of Section 409A(a)(2) of the Code, and shall not be distributed earlier than:

(i) the Participant’s separation from service, as determined by the Secretary of the Treasury;

(iv) a specified time (or pursuant to a fixed schedule) specified under the Award Agreement at the date of the deferral compensation;

(v) to the extent provided by the Secretary of the Treasury, a change in the ownership or effective control of the Company or a Parent or Subsidiary, or in the ownership of a substantial portion of the assets of the Company or a Parent or Subsidiary; or

(vi) the occurrence of an unforeseeable emergency with respect to the Participant.

(b) In the case of a Participant who is a “specified employee,” the requirement of paragraph (a)(i) shall be met only if the distributions with respect to the Section 409A Award may not be made before the date which is six months after the Participant’s separation from service (or, if earlier, the date of the Participant’s death). For purposes of this subsection (b), a Participant shall be a “specified employee” if such Participant is a key employee (as defined in Section 416(i) of the Code without regard to paragraph (5) thereof) of a corporation any stock of which is publicly traded on an established securities market or otherwise, as determined under Section 409A(a)(2)(B)(i) of the Code and the Treasury Regulations thereunder.

(c) The requirement of paragraph (a)(vi) shall be met only if, as determined under Treasury Regulations under Section 409A(a)(2)(B)(ii) of the Code, the amounts distributed with respect to the unforeseeable emergency do not exceed the amounts necessary to satisfy such unforeseeable emergency plus amounts necessary to pay taxes reasonably anticipated as a result of the distribution, after taking into account the extent to which such unforeseeable emergency is or may be relieved through reimbursement or compensation by insurance or otherwise or by liquidation of the Participant’s assets (to the extent the liquidation of such assets would not itself cause severe financial hardship).

(d) For purposes of this Section, the terms specified therein shall have the respective meanings ascribed thereto under Section 409A of the Code and the Treasury Regulations thereunder.

9.3 Prohibition on Acceleration of Benefits. The time or schedule of any distribution or payment of any shares of Stock or other property or amounts under a Section 409A Award shall not be accelerated, except as otherwise permitted under Section 409A(a)(3) of the Code and the Treasury Regulations thereunder.

(a) Any deferral election provided under or with respect to an Award to any Eligible Individual, or to the Participant holding a Section 409A Award, shall satisfy the requirements of Section 409A(a)(4)(B) of the Code, to the extent applicable, and, except as otherwise permitted under paragraph (i) or (ii) below, any such deferral election with respect to compensation for services performed during a taxable year shall be made not later than the close of the preceding taxable year, or at such other time as provided in Treasury Regulations.

(i) In the case of the first year in which an Eligible Individual or a Participant holding a Section 409A Award, becomes eligible to participate in the Plan, any such deferral election may be made with respect to services to be performed subsequent to the election with thirty days after the date the Eligible Individual, or the Participant holding a Section 409A Award, becomes eligible to participate in the Plan, as provided under Section 409A(a)(4)(B)(ii) of the Code.

(ii) In the case of any performance-based compensation based on services performed by an Eligible Individual, or the Participant holding a Section 409A Award, over a period of at least twelve months, any such deferral election may be made no later than six months before the end of the period, as provided under Section 409A(a)(4)(B)(iii) of the Code.

(b) In the event that a Section 409A Award permits, under a subsequent election by the Participant holding such Section 409A Award, a delay in a distribution or payment of any shares of Stock or other property or amounts under such Section 409A Award, or a change in the form of distribution or payment, such subsequent election shall satisfy the requirements of Section 409A(a)(4)(C) of the Code, and:

(i) such subsequent election may not take effect until at least twelve months after the date on which the election is made,

(ii) in the case such subsequent election relates to a distribution or payment not described in Section 9.2(a)(ii), (iii) or (vi), the first payment with respect to such election may be deferred for a period of not less than five years from the date such distribution or payment otherwise would have been made, and

(iii) in the case such subsequent election relates to a distribution or payment described in Section 9.2(a)(iv), such election may not be made less than twelve months prior to the date of the first scheduled distribution or payment under Section 9.2(a)(iv).

9.5 Compliance in Form and Operation. A Section 409A Award, and any election under or with respect to such Section 409A Award, shall comply in form and operation with the requirements of Section 409A of the Code and the Treasury Regulations thereunder.

10.1 Stand-Alone and Tandem Awards. Awards granted pursuant to the Plan may, in the discretion of the Administrator, be granted either alone, in addition to, or in tandem with, any other Award granted pursuant to the Plan. Awards granted in addition to or in tandem with other Awards may be granted either at the same time as or at a different time from the grant of such other Awards.

10.2 Award Agreement. Awards under the Plan shall be evidenced by Award Agreements that set forth the terms, conditions and limitations for each Award which may include the term of an Award, the provisions applicable in the event of the Participant’s Termination of Service, and the Company’s authority to unilaterally or bilaterally amend, modify, suspend, cancel or rescind an Award.

(a) Except as otherwise provided by the Administrator pursuant to Section 10.3(b), no right or interest of a Participant in any Award may be pledged, encumbered, or hypothecated to or in favor of any party other than the Company or a Parent or Subsidiary, or shall be subject to any lien, obligation, or liability of such Participant to any other party other than the Company or a Parent or Subsidiary. Except as otherwise provided by the Administrator pursuant to Section 10.3(b), no Award shall be assigned, transferred, or otherwise disposed of by a Participant other than by will or the laws of descent and distribution, unless and until such Award has been exercised, or the shares underlying such Award have been issued, and all restrictions applicable to such shares have lapsed.

(b) Notwithstanding Section 10.3(a), the Administrator, in its sole discretion, may permit an Award (other than an Incentive Stock Option) to be transferred to, exercised by and paid to any one or more Permitted Transferees (as defined below), subject to the following terms and conditions: (i) an Award transferred to a Permitted Transferee shall not be assignable or transferable by the Permitted Transferee other than by will or the laws of descent and distribution; (ii) any Award which is transferred to a Permitted Transferee shall continue to be subject to all the terms and conditions of the Award as applicable to the original Participant (other than the ability to further transfer the Award); and (iii) the Participant and the Permitted Transferee shall execute any and all documents requested by the Administrator, including, without limitation documents to (A) confirm the status of the transferee as a Permitted Transferee, (B) satisfy any requirements for an exemption for the transfer under applicable federal and state securities laws and (C) evidence the transfer. For purposes of this Section 10.3(b), “Permitted Transferee” shall mean, with respect to a Participant, any child, stepchild, grandchild, parent, stepparent, grandparent, spouse, former spouse, sibling, niece, nephew, mother-in-law, father-in-law, son-in-law, daughter-in-law, brother-in-law, or sister-in-law, including adoptive relationships, any person sharing the Participant’s household (other than a tenant or employee), a trust in which these persons (or the Participant) control the management of assets, and any other entity in which these persons (or the Participant) own more than fifty percent of the voting interests, or any other transferee specifically approved by the Administrator.

10.4 Beneficiaries. Notwithstanding Section 10.3, a Participant may, in the manner determined by the Administrator, designate a beneficiary to exercise the rights of the Participant and to receive any distribution with respect to any Award upon the Participant’s death. A beneficiary, legal guardian, legal representative, or other person claiming any rights pursuant to the Plan is subject to all terms and conditions of the Plan and any Award Agreement applicable to the Participant, except to the extent the Plan and Award Agreement otherwise provide, and to any additional restrictions deemed necessary or appropriate by the Administrator. If the Participant is married and resides in a community property state, a designation of a person other than the Participant’s spouse as his or her beneficiary with respect to more than 50% of the Participant’s interest in the Award shall not be effective without the prior written consent of the Participant’s spouse. If no beneficiary has been designated or survives the Participant, payment shall be made to the person entitled thereto pursuant to the Participant’s will or the laws of descent and distribution. Subject to the foregoing, a beneficiary designation may be changed or revoked by a Participant at any time provided the change or revocation is filed with the Administrator.

(a) Notwithstanding anything herein to the contrary, the Company shall not be required to issue or deliver any certificates evidencing shares of Stock pursuant to the exercise or purchase of any Award, unless and until the Board has determined, with advice of counsel, that the issuance and delivery of such certificates is in compliance with all applicable laws, regulations of governmental authorities and, if applicable, the requirements of any exchange on which the shares of Stock are listed or traded. All Stock certificates delivered pursuant to the Plan are subject to any stop-transfer orders and other restrictions as the Administrator deems necessary or advisable to comply with federal, state, or foreign jurisdiction, securities or other laws, rules and regulations and the rules of any national securities exchange or automated quotation system on which the Stock is listed, quoted, or traded. The Administrator may place legends on any Stock certificate to reference restrictions applicable to the Stock. In addition to the terms and conditions provided herein, the Administrator may require that a Participant make such reasonable covenants, agreements, and representations as the Administrator, in its discretion, deems advisable in order to comply with any such laws, regulations, or requirements. The Administrator shall have the right to require any Participant to comply with any timing or other restrictions with respect to the settlement or exercise of any Award, including a window-period limitation, as may be imposed in the discretion of the Administrator.

(b) Notwithstanding any other provision of the Plan, unless otherwise determined by the Administrator or required by applicable law, rule or regulation, the Company shall not deliver to any Participant certificates evidencing shares of Stock issued in connection with any Award or exercise of any Award and instead such shares of Stock will be recorded in the books of the Company (or as applicable, its transfer agent or stock plan administrator).

(a) In the event of any combination or exchange of shares, merger, consolidation, distribution of Company assets to stockholders (other than normal cash dividends), or any other corporate event affecting the Stock or the share price of the Stock, other than an Equity Restructuring, the Administrator shall make such proportionate adjustments to reflect such change with respect to (i) the aggregate number and type of shares that may be issued under the Plan (including, but not limited to, adjustments of the limitation in Section 3.1); (ii) the terms and conditions of any outstanding Awards (including, without limitation, any applicable performance targets or criteria with respect thereto); and (iii) the grant or exercise price per share for any outstanding Awards under the Plan.

(b) In the event of any transaction or event described in Section 11.1(a) or any unusual or nonrecurring transactions or events affecting the Company, any affiliate of the Company, or the financial statements of the Company or any affiliate (including without limitation any Change in Control), other than an Equity Restructuring, or of changes in applicable laws, regulations or accounting principles, and whenever the Administrator determines that such action is appropriate in order to prevent the dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan or with respect to any Award under the Plan, to facilitate such transactions or events or to give effect to such changes in laws, regulations or principles, the Administrator, in its sole discretion and on such terms and conditions as it deems appropriate, either by amendment of the terms of any outstanding Awards or by action taken prior to the occurrence of such transaction or event and either automatically or upon the Participant’s request, is hereby authorized to take any one or more of the following actions:

(i) To provide for either (A) termination of any such Award in exchange for an amount of cash and/or other property, if any, equal to the amount that would have been received upon the exercise of such Award or realization of the Participant’s rights (and, for the avoidance of doubt, if as of the date of the occurrence of the transaction or event described in this Section 11.1(b) the Administrator determines in good faith that no amount would have been attained upon the exercise of such Award or realization of the Participant’s rights, then such Award may be terminated by the Company without payment) or (B) the replacement of such Award with other rights or property selected by the Administrator in its sole discretion;

(ii) To provide that such Award be assumed by the successor or survivor entity, or a parent or subsidiary thereof, or shall be substituted for by similar options, rights or awards covering the stock of the successor or survivor entity, or a parent or subsidiary thereof, with appropriate adjustments as to the number and kind of shares and prices;

(iii) To make adjustments in the number and type of shares of Stock (or other securities or property) subject to outstanding Awards, and in the number and kind of outstanding Restricted Stock or Restricted Stock Units and/or in the terms and conditions of (including the grant or exercise price), and the criteria included in, outstanding options, rights and awards, and options, rights and awards which may be granted in the future;

(iv) To provide that such Award shall be exercisable or payable or fully vested with respect to all shares covered thereby, notwithstanding anything to the contrary in the Plan or the applicable Award Agreement; and

(v) To provide that the Award cannot vest, be exercised or become payable after such event.

(c) In connection with the occurrence of any Equity Restructuring, and notwithstanding anything to the contrary in Sections 11.1(a) and 11.1(b):

(i) The number and type of securities subject to each outstanding Award and the exercise price or grant price thereof, if applicable, will be proportionately adjusted by the Administrator as the Administrator deems appropriate to reflect such Equity Restructuring. The adjustments provided under this Section 11(c)(i) shall be nondiscretionary and shall be final and binding on the affected Participant and the Company.

(ii) The Administrator shall make such proportionate adjustments, if any, as the Administrator in its discretion may deem appropriate to reflect such Equity Restructuring with respect to the aggregate number and kind of shares that may be issued under the Plan (including, but not limited to, adjustments of the limitations in Article 3).

(a) Notwithstanding anything to the contrary contained in Section 11.1, and except as may otherwise be provided in any applicable Award Agreement or other written agreement entered into between the Company and a Participant, if a Change in Control occurs and a Participant’s Awards are not continued, converted, assumed or replaced by (i) the Company or a Parent or Subsidiary, or (ii) a Successor Entity, such Awards shall become fully exercisable and/or payable, as applicable, and all forfeiture, repurchase and other restrictions on such Awards shall lapse immediately prior to such Change in Control. Upon, or in anticipation of, a Change in Control, the Administrator may cause any and all Awards outstanding hereunder to terminate at a specific time in the future, including without limitation, the date of such Change in Control, and shall give each Participant the right to exercise such Awards during a period of time as the Administrator, in its sole and absolute discretion, shall determine. The Administrator shall have sole discretion to determine whether an Award has been continued, converted, assumed or replaced in connection with a Change in Control.

(b) Except as otherwise provided in the Agreement evidencing the Award, any such Awards that are continued, converted, assumed, or replaced by (i) the Company or a Parent or Subsidiary of the Company, or (ii) a Successor Entity, in a Change in Control and do not otherwise accelerate at that time shall become fully exercisable and/or payable, as applicable, and all forfeiture, repurchase and other restrictions on such Awards shall lapse in the event that the Participant has a Termination of Employment, Termination of Directorship or Termination of Consultancy (i) in connection with the Change in Control or (ii) subsequently within twelve months following such Change in Control, unless such termination is by reason of the Participant’s discharge by the Company or a Parent or Subsidiary or a Successor Entity for Cause or by reason of the Participant’s voluntary resignation without Good Reason.

11.3 No Other Rights. Except as expressly provided in the Plan or pursuant to action of the Administrator under the Plan, no Participant shall have any rights by reason of any subdivision or consolidation of shares of stock of any class, the payment of any dividend, any increase or decrease in the number of shares of stock of any class or any dissolution, liquidation, merger, or consolidation of the Company or any other corporation. Except as expressly provided in the Plan or pursuant to action of the Administrator under the Plan, no issuance by the Company of shares of 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 of shares of Stock subject to an Award or the grant or exercise price of any Award.

12.1 Administrator. The Plan shall be administered by the Board. The Board may delegate administration of the Plan to a Committee or Committees of one or more members of the Board, and the term “Administrator” shall apply to any person or persons who at the time have the authority to administer the Plan. If administration is delegated to a Committee, the Committee shall have, in connection with the administration of the Plan, the powers theretofore possessed by the Board, including the power to delegate to a subcommittee any of the administrative powers the Committee is authorized to exercise (and references in this Plan to the Board shall thereafter be to the Committee or subcommittee), subject, however, to such resolutions, not inconsistent with the provisions of the Plan, as may be adopted from time to time by the Board. Notwithstanding the foregoing, however, from and after the Public Trading Date, a Committee of the Board shall administer the Plan and such Committee shall consist solely of two or more members of the Board each of whom is an “outside director,” within the meaning of Section 162(m) of the Code and a Non-Employee Director. Notwithstanding the foregoing: (a) the full Board, acting by a majority of its members in office, shall conduct the general administration of the Plan with respect to all Awards granted to Non-Employee Directors and for purposes of such Awards the term “Administrator” as used in this Plan shall be deemed to refer to the Board, and (b) the Board or the Committee may delegate its authority hereunder to the extent permitted by Section 12.5. In its sole discretion, the Board may at any time and from time to time exercise any and all rights and duties of the Administrator under the Plan except with respect to matters which, following the Public Trading Date, are required to be determined in the sole discretion of the Committee under Rule 16b-3 under the Exchange Act or Section 162(m) of the Code, or any regulations or rules issued thereunder. Committee members may resign at any time by delivering written notice to the Board. Vacancies in the Committee may only be filled by the Board.

12.2 Action by the Administrator. A majority of the members of the Administrator shall constitute a quorum. The acts of a majority of the members of the Administrator present at any meeting at which a quorum is present, and, subject to applicable law, acts approved in writing by a majority of the members of the Administrator in lieu of a meeting, shall be deemed the acts of the Administrator. Each member of the Administrator is entitled to, in good faith, rely or act upon any report or other information furnished to that member by any officer or other employee of the Company or any Parent or Subsidiary, the Company’s independent certified public accountants, or any executive compensation consultant or other professional retained by the Company to assist in the administration of the Plan.

12.3 Authority of Administrator. Subject to any specific designation in the Plan, the Administrator has the exclusive power, authority and discretion to:

(b) Determine the type or types of Awards to be granted to each Eligible Individual;

(d) Determine the terms and conditions of any Award granted pursuant to the Plan, including, but not limited to, the exercise price, grant price, or purchase price, any reload provision, any restrictions or limitations on the Award, any schedule for lapse of forfeiture restrictions or restrictions on the exercisability of an Award, and accelerations or waivers thereof, any provisions related to non-competition and recapture of gain on an Award, based in each case on such considerations as the Administrator in its sole discretion determines;

(e) Determine whether, to what extent, and pursuant to what circumstances an Award may be settled in, or the exercise price of an Award may be paid in, cash, Stock, other Awards, or other property, or an Award may be canceled, forfeited, or surrendered;

(f) Prescribe the form of each Award Agreement, which need not be identical for each Participant;

(g) Decide all other matters that must be determined in connection with an Award;

(h) Establish, adopt, or revise any rules and regulations as it may deem necessary or advisable to administer the Plan;

(i) Interpret the terms of, and any matter arising pursuant to, the Plan or any Award Agreement; and

(j) Make all other decisions and determinations that may be required pursuant to the Plan or as the Administrator deems necessary or advisable to administer the Plan.

11.4 Decisions Binding. The Administrator’s interpretation of the Plan, any Awards granted pursuant to the Plan, any Award Agreement and all decisions and determinations by the Administrator with respect to the Plan are final, binding, and conclusive on all parties.

11.5 Delegation of Authority. Within the scope of such authority, the Board or the Committee may delegate to a committee of one or more members of the Board or one or more officers of the Company the authority to grant or amend Awards to Participants other than Eligible Individuals who are either (a) “covered employees” at the time of recognition of income resulting from such Awards, and/or (b) persons with respect to whom the Company wishes to comply with Section 162(m) of the Code and/or (c) subject to Section 16 of the Exchange Act and/or (d) officers of the Company or members of the Board to whom authority to grant or amend Awards has been delegated pursuant to this Section 12.5. At all times, the delegate(s) appointed under this Section 12.5 shall serve in such capacity at the pleasure of the Board or the Committee.

13.1 Effective Date. The Plan will be effective on the date of the Board’s initial adoption of the Plan (the “Effective Date”). The Plan will be submitted for the approval of the Company’s stockholders within twelve months after the Effective Date. Awards may be granted or awarded prior to such stockholder approval, provided that such Awards shall not be exercisable, shall not vest and the restrictions thereon shall not lapse prior to the time when the Plan is approved by the stockholders, and provided further that if such approval has not been obtained at the end of said twelve-month period, all Awards previously granted or awarded under the Plan shall thereupon be canceled and become null and void.

13.2 Expiration Date. The Plan will expire on, and no Award may be granted pursuant to the Plan after, the tenth anniversary of the earlier of (i) the Effective Date or (ii) the date this Plan is approved by the Company’s stockholders. Any Awards that are outstanding on the tenth anniversary of the Effective Date shall remain in force according to the terms of the Plan and the applicable Award Agreement.

14.1 Amendment, Modification, and Termination. The Board may terminate, amend or modify the Plan at any time and from time to time; provided, however, that to the extent necessary to comply with any applicable law, regulation, or stock exchange rule, the Company shall obtain stockholder approval of any Plan amendment in such a manner and to such a degree as required. The Administrator shall have the authority to effect, at any time and from time to time, with the consent of the affected Option holders, the cancellation of any or all outstanding Awards under the Plan and to grant in substitution therefor new Awards covering the same or different number of shares of Stock and with a different or no exercise price per share.

14.2 Awards Previously Granted. No termination, amendment, or modification of the Plan shall adversely affect in any material way any Award previously granted pursuant to the Plan without the prior written consent of the Participant.

15.1 No Rights to Awards. No Participant, Employee, or other person shall have any claim to be granted any Award pursuant to the Plan, and neither the Company nor the Administrator is obligated to treat Participants, Employees, and other persons uniformly.

15.2 No Stockholder Rights. Except as otherwise provided herein, a Participant shall have none of the rights of a stockholder with respect to shares of Stock covered by any Award until the Participant becomes the record owner of such shares of Stock.

15.3 Withholding. The Company or any Parent or Subsidiary shall have the authority and the right to deduct or withhold, or require a Participant to remit to the Company an amount sufficient to satisfy federal, state, local and foreign taxes (including the Participant’s employment tax obligations) required by law to be withheld with respect to any taxable event concerning a Participant arising as a result of this Plan. The Administrator may in its discretion and in satisfaction of the foregoing requirement allow a Participant to elect to have the Company or a Parent or Subsidiary, as applicable, withhold shares of Stock otherwise issuable under an Award (or allow the return of shares of Stock) having a Fair Market Value equal to the sums required to be withheld. Notwithstanding any other provision of the Plan, the number of shares of Stock which may be withheld with respect to the issuance, vesting, exercise or payment of any Award (or which may be repurchased from the Participant of such Award within six months (or such other period as may be determined by the Administrator) after such shares of Stock were acquired by the Participant from the Company) in order to satisfy the Participant’s federal, state, local and foreign tax liabilities with respect to the issuance, vesting, exercise or payment of the Award shall be limited to the number of shares which have a Fair Market Value on the date of withholding or repurchase equal to the aggregate amount of such liabilities based on the minimum statutory withholding rates for federal, state, local and foreign income tax and employment tax purposes that are applicable to such supplemental taxable income.

15.4 No Right to Employment or Services. Nothing in the Plan or any Award Agreement shall interfere with or limit in any way the right of the Company or any Parent or Subsidiary to terminate any Participant’s employment or services at any time, nor confer upon any Participant any right to continue in the employ or service of the Company or any Parent or Subsidiary.

15.5 Unfunded Status of Awards. The Plan is intended to be an “unfunded” plan for incentive compensation. With respect to any payments not yet made to a Participant pursuant to an Award, nothing contained in the Plan or any Award Agreement shall give the Participant any rights that are greater than those of a general creditor of the Company or any Parent or Subsidiary.

15.6 Indemnification. To the extent allowable pursuant to applicable law, the Administrator (and each member thereof) shall be indemnified and held harmless by the Company from any loss, cost, liability, or expense that may be imposed upon or reasonably incurred by such member in connection with or resulting from any claim, action, suit, or proceeding to which he or she may be a party or in which he or she may be involved by reason of any action or failure to act pursuant to the Plan and against and from any and all amounts paid by him or her in satisfaction of judgment in such action, suit, or proceeding against him or her; provided he or she gives the Company an opportunity, at its own expense, to handle and defend the same before he or she undertakes to handle and defend it on his or her own behalf. The foregoing right of indemnification shall not be exclusive of any other rights of indemnification to which such persons may be entitled pursuant to the Company’s Certificate of Incorporation or Bylaws, as a matter of law, or otherwise, or any power that the Company may have to indemnify them or hold them harmless.

15.7 Relationship to Other Benefits. No payment pursuant to the Plan shall be taken into account in determining any benefits pursuant to any pension, retirement, savings, profit sharing, group insurance, welfare or other benefit plan of the Company or any Parent or Subsidiary except to the extent otherwise expressly provided in writing in such other plan or an agreement thereunder.

15.8 Expenses. The expenses of administering the Plan shall be borne by the Company and its Parents and Subsidiaries.

15.9 Titles and Headings. The titles and headings of the Sections in the Plan are for convenience of reference only and, in the event of any conflict, the text of the Plan, rather than such titles or headings, shall control.

15.10 Fractional Shares. No fractional shares of Stock shall be issued and the Administrator shall determine, in its discretion, whether cash shall be given in lieu of fractional shares or whether such fractional shares shall be eliminated by rounding up or down as appropriate.

15.11 Limitations Applicable to Section 16 Persons. Notwithstanding any other provision of the Plan, the Plan, and any Award granted or awarded to any Participant who is then subject to Section 16 of the Exchange Act, shall be subject to any additional limitations set forth in any applicable exemptive rule under Section 16 of the Exchange Act (including any amendment to Rule 16b-3 under the Exchange Act) that are requirements for the application of such exemptive rule. To the extent permitted by applicable law, the Plan and Awards granted or awarded hereunder shall be deemed amended to the extent necessary to conform to such applicable exemptive rule.

15.12 Government and Other Regulations. The obligation of the Company to make payment of awards in Stock or otherwise shall be subject to all applicable laws, rules, and regulations, and to such approvals by government agencies as may be required. The Company shall be under no obligation to register pursuant to the Securities Act any of the shares of Stock paid pursuant to the Plan. If the shares paid pursuant to the Plan may in certain circumstances be exempt from registration pursuant to the Securities Act, the Company may restrict the transfer of such shares in such manner as it deems advisable to ensure the availability of any such exemption.

15.13 Governing Law. The Plan and all Award Agreements shall be construed in accordance with and governed by the laws of the State of California, without regard to the conflicts of law principles thereof.

15.14 Compliance with California Securities Laws. Unless determined otherwise by the Administrator, prior to the Public Trading Date, this Plan is intended to comply with Section 25102(o) of the California Corporations Code and the regulations issued thereunder. Appendix I to the Plan sets forth the requirements under Section 25102(o) of the California Corporations Code and the regulations issued thereunder and is incorporated herein by reference. If any of the provisions contained in this Plan are inconsistent with such requirements or Appendix I, such provisions shall be deemed null and void. The invalidity of any provision of this Plan shall not affect the validity or enforceability of any other provision of this Plan, which shall remain in full force and effect.

15.15 Appendices. The Board may approve such supplements to, or amendments, or appendices to, the Plan as it may consider necessary or appropriate for purposes of compliance with applicable laws or otherwise and such supplements, amendments or appendices shall be considered a part of the Plan; provided, however, that no such supplements, amendments or appendices shall increase the share limitation contained in Section 3.1 of the Plan.

Notwithstanding anything to the contrary contained in the Plan and except as otherwise determined by the Administrator, the provisions set forth in this Appendix shall apply to all Awards granted under the Zogenix, Inc. 2006 Equity Incentive Plan (the “Plan”) prior to the Public Trading Date. This Appendix shall be of no further force and effect on or after the Public Trading Date. Definitions as set out in Article 2 of the Plan are applicable to this Appendix.

The purpose of this Appendix is to set forth those provisions of the Plan necessary to comply with Section 25102(o) of the California Corporations Code and the regulations issued thereunder. If any of the provisions contained in this Appendix are inconsistent with such requirements, such provisions shall be deemed null and void. The invalidity of any provision of this Appendix shall not affect the validity or enforceability of any other provision of this Appendix, which shall remain in full force and effect.

References to Articles and Sections set forth in this Appendix are to those Articles and Sections of the Plan.

1.1 Term of Awards. The term of each Award shall be no more than ten years from the date of grant thereof.

2.1 Award Exercise or Purchase Price. Except as provided in Article 11, the per share exercise or purchase price for the Stock to be issued upon exercise of an Award shall be such price as is determined by the Administrator, but in the case of an Award granted to a Participant who, at the time of grant of such Award, owns stock representing more than 10% of the voting power of all classes of stock of the Company or any parent (as defined in Section 175 of the California Corporations Code) or Subsidiary, the per share exercise or purchase price shall be no less than 110% of the Fair Market Value per share on the date of the grant (100% in the case of an Award other than an Option). Notwithstanding the foregoing, Awards may be granted with a per share exercise or purchase price other than as required above pursuant to a merger or other corporate transaction.

3.1 Exercisability. Except with regard to Awards granted to officers, members of the Board, managers or consultants, in no event shall an Award granted hereunder become vested and exercisable at a rate of less than 20% per year over five years from the date the Award is granted, subject to reasonable conditions, such as continuing to be a member of the Board, Employee or Consultant.

(a) Termination Other Than Death or Disability. If a Participant has a Termination of Service for any reason other than by reason of the Participant’s Disability or death, such Participant may exercise his or her Award within such period of time as is specified in the Award Agreement to the extent that the Award is vested on the date of termination; provided, however, that prior to the Public Trading Date, such period of time shall not be less than thirty days (but in no event later than the expiration of the term of the Award as set forth in the Award Agreement). In the absence of a specified time in the Award Agreement, the Option shall remain exercisable for three months following the Participant’s Termination of Service for any reason other than death or Disability.

(b) Death. If a Participant has a Termination of Service as a result of the Participant’s death, the Award may be exercised within such period of time as is specified in the Award Agreement; provided, however, that prior to the Public Trading Date, such period of time shall not be less than six months (but in no event later than the expiration of the term of such Award as set forth in the Notice of Grant), by the Participant’s estate or by a person who acquires the right to exercise the Award by bequest or inheritance, but only to the extent that the Award is vested on the date of death. In the absence of a specified time in the Award Agreement, the Award shall remain exercisable for twelve months following the Participant’s Termination of Service for death.

(c) Disability of Participant. If a Participant has a Termination of Service as a result of the Participant’s Disability, the Participant may exercise his or her Award within such period of time as is specified in the Award Agreement to the extent the Award is vested on the date of termination; provided, however, that prior to the Public Trading Date, such period of time shall not be less than six months (but in no event later than the expiration of the term of such Award as set forth in the Award Agreement). In the absence of a specified time in the Award Agreement, the Award shall remain exercisable for twelve months following the Participant’s Termination of Service for Disability.

(d) Misconduct of Participant. If a Participant has a Termination of Service as a result of the Participant’s Misconduct, the Award shall terminate immediately and cease to remain outstanding.

5.1 Repurchase Provisions. In the event the Administrator provides that the Company may repurchase Stock acquired upon exercise of an Award upon the occurrence of certain specified events, including, without limitation, a Participant’s Termination of Service, divorce, bankruptcy or insolvency, then any such repurchase right shall be set forth in the applicable Award Agreement or in another agreement referred to in such agreement and, to the extent required by Section 260.140.41 and Section 260.140.42 of Title 10 of the California Code of Regulations (or any successor regulation), any such repurchase right set forth in an Award granted prior to the Public Trading Date to a person who is not an officer, member of the Board, manager or consultant shall be upon the following terms: (i) if the repurchase option gives the Company the right to repurchase the shares upon the Participant’s Termination of Service at not less than the Fair Market Value of the shares to be purchased on the date of termination of employment or service, then (A) the right to repurchase shall be exercised for cash or cancellation of purchase money indebtedness for the shares within ninety days of termination (or in the case of shares issued upon exercise of Awards after such date of termination, within ninety days after the date of the exercise) or such longer period as may be agreed to by the Administrator and the Participant and (B) the right terminates on the Public Trading Date; and (ii) if the repurchase option gives the Company the right to repurchase the Stock upon the Participant’s Termination of Service at the original purchase price for such Stock, then (A) the right to repurchase at the original purchase price shall lapse at the rate of at least 20% of the shares per year over five (5) years from the date the Award is granted (without respect to the date the Award was exercised or became exercisable) and (B) the right to repurchase shall be exercised for cash or cancellation of purchase money indebtedness for the shares within ninety days of termination (or, in the case of shares issued upon exercise of Awards, after such date of termination, within ninety days after the date of the exercise) or such longer period as may be agreed to by the Company and the Participant.

6.1 Information Rights. Prior to the Public Trading Date and to the extent required by Section 260.140.46 of Title 10 of the California Code of Regulations, the Company shall provide to each Participant and to each individual who acquires Stock pursuant to the Plan, not less frequently than annually during the period such Participant has one or more Awards outstanding, and, in the case of an individual who acquires Stock pursuant to the Plan, during the period such individual owns such Stock, copies of annual financial statements. Notwithstanding the preceding sentence, the Company shall not be required to provide such statements to key employees whose duties in connection with the Company assure their access to equivalent information.

7.1 Transferability. Prior to the Public Trading Date, no Award shall be assigned, transferred, or otherwise disposed of by a Participant other than by will or the laws of descent and distribution or, with respect to Awards other than Incentive Stock Options, as permitted by Rule 701 of the Securities Act.

8.1 Limitation on Number of Shares. Prior to the Public Trading Date, at no time shall the total number of shares of Stock issuable upon exercise of all outstanding Options under the Plan and any shares of Stock provided for under any bonus or similar plan or agreement of the Company exceed 30% of the then-outstanding shares of Stock of the Company, as calculated pursuant to Section 260.140.45 of Title 10 of the California Code of Regulations (or any successor regulation), unless a percentage higher than 30% is approved by at least two-thirds of the outstanding securities of the Company entitled to vote. The number of shares of Stock which may be issued or transferred pursuant to Awards under the Plan shall be reduced to the extent necessary to comply with this provision.

Zogenix, Inc. (the “Company”), pursuant to its 2006 Equity Incentive Plan (the “Plan”), hereby grants to the holder listed below (“Participant”), an option to purchase the number of shares of the Company’s Stock set forth below (the “Option”). This Option is subject to all of the terms and conditions as set forth herein and in the Stock Option Agreement attached hereto as Exhibit A (the “Stock Option Agreement”) and the Plan, each of which are incorporated herein by reference. Unless otherwise defined herein, the terms defined in the Plan shall have the same defined meanings in this Grant Notice and the Stock Option Agreement.

By his or her signature and the Company’s signature below, Participant agrees to be bound by the terms and conditions of the Plan, the Stock Option Agreement and this Grant Notice. Participant has reviewed the Stock Option Agreement, the Plan and this Grant Notice in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Grant Notice and fully understands all provisions of this Grant Notice, the Stock Option Agreement and the Plan. Participant hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Administrator of the Plan upon any questions arising under the Plan or the Option.

Pursuant to the Stock Option Grant Notice (“Grant Notice”) to which this Stock Option Agreement (this “Agreement”) is attached, Zogenix, Inc. (the “Company”) has granted to Participant an option under the Company’s 2006 Equity Incentive Plan (the “Plan”) to purchase the number of shares of Stock indicated in the Grant Notice.

1.1 Defined Terms. Capitalized terms not specifically defined herein shall have the meanings specified in the Plan and the Grant Notice.

1.2 Incorporation of Terms of Plan. The Option is subject to the terms and conditions of the Plan which are incorporated herein by reference.

2.1 Grant of Option. In consideration of Participant’s past and/or continued employment with or service to the Company or a Parent or Subsidiary and for other good and valuable consideration, effective as of the Grant Date set forth in the Grant Notice (the “Grant Date”), the Company irrevocably grants to Participant the Option to purchase any part or all of an aggregate of the number of shares of Stock set forth in the Grant Notice, upon the terms and conditions set forth in the Plan and this Agreement. Unless designated as a Non-Qualified Stock Option in the Grant Notice, the Option shall be an Incentive Stock Option to the maximum extent permitted by law.

2.2 Exercise Price. The exercise price of the shares of Stock subject to the Option shall be as set forth in the Grant Notice, without commission or other charge; provided, however, that if this Option is designated as an Incentive Stock Option, the price per share of the shares subject to the Option shall not be less than the greater of (i) 100% of the Fair Market Value of a share of Stock on the Grant Date, or (ii) 110% of the Fair Market Value of a share of Stock on the Grant Date in the case of a Participant then owning (within the meaning of Section 424(d) of the Code) more than 10% of the total combined voting power of all classes of stock of the Company or any “subsidiary corporation” of the Company or any “parent corporation” of the Company (each within the meaning of Section 424 of the Code).

(a) Subject to Sections 3.3 and 5.8, the Option shall become vested and exercisable in such amounts and at such times as are set forth in the Grant Notice.

(b) No portion of the Option which has not become vested and exercisable at the date of Participant’s Termination of Service shall thereafter become vested and exercisable, except as may be otherwise provided by the Administrator or as set forth in a written agreement between the Company and Participant.

3.2 Duration of Exercisability. The installments provided for in the vesting schedule set forth in the Grant Notice are cumulative. Each such installment which becomes vested and exercisable pursuant to the vesting schedule set forth in the Grant Notice shall remain vested and exercisable until it becomes unexercisable under Section 3.3.

3.3 Expiration of Option. The Option may not be exercised to any extent by anyone after the first to occur of the following events:

(b) If this Option is designated as an Incentive Stock Option and Participant owned (within the meaning of Section 424(d) of the Code), at the time the Option was granted, more than 10% of the total combined voting power of all classes of stock of the Company or any “subsidiary corporation” of the Company or “parent corporation” of the Company (each within the meaning of Section 424 of the Code), the expiration of five years from the date the Option was granted; or

(c) The expiration of three months following the date of Participant’s Termination of Service, unless such termination occurs by reason of Participant’s death, Disability or Misconduct;

(d) The expiration of one year following the date of Participant’s Termination of Service by reason of Participant’s death or Disability; or

(e) The date of Participant’s Termination of Service as a result of Participant’s Misconduct.

Participant acknowledges that an Incentive Stock Option exercised more than three months after Participant’s termination of status as an Employee, other than by reason of death or Disability, will be taxed as a Non-Qualified Stock Option.

3.4 Special Tax Consequences. Participant acknowledges that, to the extent that the aggregate Fair Market Value (determined as of the time the Option is granted) of all shares of Stock with respect to which Incentive Stock Options, including the Option, are first exercisable for the first time by Participant in any calendar year exceeds $100,000 (or such other limitation as imposed by Section 422(d) of the Code), the Option and such other options shall be treated as not qualifying under Section 422 of the Code but rather shall be considered Non-Qualified Stock Options. Participant further acknowledges that the rule set forth in the preceding sentence shall be applied by taking Options and other “incentive stock options” into account in the order in which they were granted.

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

4.2 Partial Exercise. Any exercisable portion of the Option or the entire Option, if then wholly exercisable, may be exercised in whole or in part at any time prior to the time when the Option or portion thereof becomes unexercisable under Section 3.3.

4.3 Manner of Exercise. The Option, or any exercisable portion thereof, may be exercised solely by delivery to the Secretary of the Company or the Secretary’s office of all of the following prior to the time when the Option or such portion thereof becomes unexercisable under Section 3.3:

(a) An Exercise Notice in writing signed by Participant or any other person then entitled to exercise the Option or portion thereof, stating that the Option or portion thereof is thereby exercised, such notice complying with all applicable rules established by the Administrator. Such notice shall be substantially in the form attached as Exhibit B to the Grant Notice (or such other form as is prescribed by the Administrator); and

(i) Full payment (in cash or by check) for the shares with respect to which the Option or portion thereof is exercised; or

(ii) With the consent of the Administrator, by delivery of a full recourse promissory note on such terms and conditions as may be approved by the Administrator; or

(iii) With the consent of the Administrator, by delivery of shares of Stock then issuable upon exercise of the Option having a Fair Market Value on the date of delivery equal to the aggregate exercise price of the Option or exercised portion thereof; or

(iv) On and after the Public Trading Date, such payment may be made, in whole or in part, through the delivery of shares of Stock which have been owned by Participant for at least six months, duly endorsed for transfer to the Company with a Fair Market Value on the date of delivery equal to the aggregate exercise price of the Option or exercised portion thereof; or

(v) On and after the Public Trading Date, through the delivery of a notice that Participant has placed a market sell order with a broker with respect to shares of Stock then issuable upon exercise of the Option, and that the broker has been directed to pay a sufficient portion of the net proceeds of the sale to the Company in satisfaction of the Option exercise price; provided, that payment of such proceeds is made to the Company upon settlement of such sale; or

(vi) Subject to any applicable laws, any combination of the consideration provided in the foregoing paragraphs (i), (ii) and (iii); and

(c) A bona fide written representation and agreement, in such form as is prescribed by the Administrator, signed by Participant or the other person then entitled to exercise such Option or portion thereof, stating that the shares of Stock are being acquired for Participant’s own account, for investment and without any present intention of distributing or reselling said shares or any of them except as may be permitted under the Securities Act and then applicable rules and regulations thereunder, and that Participant or other person then entitled to exercise such Option or portion thereof will indemnify the Company against and hold it free and harmless from any loss, damage, expense or liability resulting to the Company if any sale or distribution of the shares by such person is contrary to the representation and agreement referred to above. The Administrator may, in its absolute discretion, take whatever additional actions it deems appropriate to ensure the observance and performance of such representation and agreement and to effect compliance with the Securities Act and any other federal or state securities laws or regulations. Without limiting the generality of the foregoing, the Administrator may require an opinion of counsel acceptable to it to the effect that any subsequent transfer of shares acquired on an Option exercise does not violate the Securities Act, and may issue stop-transfer orders covering such shares. Share certificates evidencing Stock issued on exercise of the Option shall bear an appropriate legend referring to the provisions of this subsection (c) and the agreements herein. The written representation and agreement referred to in the first sentence of this subsection (c) shall, however, not be required if the shares to be issued pursuant to such exercise have been registered under the Securities Act, and such registration is then effective in respect of such shares; and

(d) The receipt by the Company of full payment for such shares, including payment of any applicable withholding tax, which may be in the form of consideration used by Participant to pay for such shares under Section 4.3(b), subject to Section 15.3 of the Plan; and

(e) In the event the Option or portion thereof shall be exercised pursuant to Section 4.1 by any person or persons other than Participant, appropriate proof of the right of such person or persons to exercise the Option.

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

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

(b) The completion of any registration or other qualification of such shares under any state or federal law or under rulings or regulations of the Securities and Exchange Commission or of any other governmental regulatory body, which the Administrator shall, in its absolute discretion, deem necessary or advisable; and

(c) The obtaining of any approval or other clearance from any state or federal governmental agency which the Administrator shall, in its absolute discretion, determine to be necessary or advisable; and

(d) The lapse of such reasonable period of time following the exercise of the Option as the Administrator may from time to time establish for reasons of administrative convenience; and

(e) The receipt by the Company of full payment for such shares, including payment of any applicable withholding tax, which may be in the form of consideration used by Participant to pay for such shares under Section 4.3(b), subject to Section 15.3 of the Plan.

4.5 Rights as Stockholder. The holder of the Option shall not be, nor have any of the rights or privileges of, a stockholder of the Company in respect of any shares purchasable upon the exercise of any part of the Option unless and until such shares shall have been issued by the Company to such holder.

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

(a) Subject to Section 5.2(b), the Option may not be sold, pledged, assigned or transferred in any manner other than by will or the laws of descent and distribution, unless and until the shares underlying the Option have been issued, and all restrictions applicable to such shares have lapsed. Neither the Option nor any interest or right therein shall be liable for the debts, contracts or engagements of Participant or his or her successors in interest or shall be subject to disposition by transfer, alienation, anticipation, pledge, encumbrance, assignment or any other means whether such disposition be voluntary or involuntary or by operation of law by judgment, levy, attachment, garnishment or any other legal or equitable proceedings (including bankruptcy), and any attempted disposition thereof shall be null and void and of no effect, except to the extent that such disposition is permitted by the preceding sentence.

(b) Notwithstanding any other provision in this Agreement, with the consent of the Administrator and to the extent the Option is designated as a Non-Qualified Stock Option, the Option may be transferred to, exercised by and paid to one or more Permitted Transferees, subject to the terms and conditions set forth in Section 10.3 of the Plan.

(c) Unless transferred to a Permitted Transferee in accordance with Section 5.2(b), during the lifetime of Participant, only Participant may exercise the Option or any portion thereof. Subject to such conditions and procedures as the Administrator may require, a Permitted Transferee may exercise the Option or any portion thereof during Participant’s lifetime. After the death of Participant, any exercisable portion of the Option may, prior to the time when the Option becomes unexercisable under Section 3.3, be exercised by Participant’s personal representative or by any person empowered to do so under the deceased Participant’s will or under the then applicable laws of descent and distribution.

5.3 Lock-Up Period. Participant hereby agrees that, if so requested by the Company or any representative of the underwriters (the “Managing Underwriter”) in connection with any registration of the offering of any securities of the Company under the Securities Act, Participant shall not sell or otherwise transfer any shares of Stock or other securities of the Company during such period as may be requested in writing by the Managing Underwriter and agreed to in writing by the Company (which period shall not be longer than one hundred eighty days) (the “Market Standoff Period”) following the effective date of a registration statement of the Company filed under the Securities Act; provided, however, that such restriction shall apply only to the first registration statement of the Company to become effective under the Securities Act that includes securities to be sold on behalf of the Company to the public in an underwritten public offering under the Securities Act.

(a) The share certificate or certificates evidencing the shares of Stock purchased hereunder shall be endorsed with any legends that may be required by state or federal securities laws.

(b) Participant agrees that, in order to ensure compliance with the restrictions referred to herein, the Company may issue appropriate “stop transfer” instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make appropriate notations to the same effect in its own records.

(c) The Company shall not be required: (i) to transfer on its books any shares of Stock that have been sold or otherwise transferred in violation of any of the provisions of this Agreement, or (ii) to treat as owner of such shares of Stock or to accord the right to vote or pay dividends to any purchaser or other transferee to whom such shares shall have been so transferred.

5.5 Shares to Be Reserved. The Company shall at all times during the term of the Option reserve and keep available such number of shares of Stock as will be sufficient to satisfy the requirements of this Agreement.

5.6 Notices. Any notice to be given under the terms of this Agreement to the Company shall be addressed to the Company in care of the Secretary of the Company at the address given beneath the signature of the Company’s authorized officer on the Grant Notice, and any notice to be given to Participant shall be addressed to Participant at the address given beneath Participant’s signature on the Grant Notice. By a notice given pursuant to this Section 5.6, either party may hereafter designate a different address for notices to be given to that party. Any notice which is required to be given to Participant shall, if Participant is then deceased, be given to the person entitled to exercise his or her Option pursuant to Section 4.1 by written notice under this Section 5.6. Any notice shall be deemed duly given when sent via email or when sent by certified mail (return receipt requested) and deposited (with postage prepaid) in a post office or branch post office regularly maintained by the United States Postal Service.

5.7 Titles. Titles are provided herein for convenience only and are not to serve as a basis for interpretation or construction of this Agreement.

5.8 Stockholder Approval. The Plan will be submitted for approval by the Company’s stockholders within twelve months after the date the Plan was initially adopted by the Board. The Option may not be exercised to any extent by anyone prior to the time when the Plan is approved by the stockholders, and if such approval has not been obtained by the end of said twelve month period, the Option shall thereupon be canceled and become null and void.

5.9 Governing Law; Severability. This Agreement shall be administered, interpreted and enforced under the laws of the State of California, without regard to the conflicts of law principles thereof. Should any provision of this Agreement be determined by a court of law to be illegal or unenforceable, the other provisions shall nevertheless remain effective and shall remain enforceable.

5.10 Conformity to Securities Laws. Participant acknowledges that the Plan is intended to conform to the extent necessary with all provisions of the Securities Act and the Exchange Act and any and all regulations and rules promulgated by the Securities and Exchange Commission thereunder, and state securities laws and regulations. Notwithstanding anything herein to the contrary, the Plan shall be administered, and the Option is granted and may be exercised, only in such a manner as to conform to such laws, rules and regulations. To the extent permitted by applicable law, the Plan and this Agreement shall be deemed amended to the extent necessary to conform to such laws, rules and regulations.

5.11 Amendments. This Agreement may not be modified, amended or terminated except by an instrument in writing, signed by Participant or such other person as may be permitted to exercise the Option pursuant to Section 4.1 and by a duly authorized representative of the Company.

5.12 No Employment Rights. If Participant is an Employee, nothing in the Plan or this Agreement shall confer upon Participant any right to continue in the employ of the Company or any Subsidiary or shall interfere with or restrict in any way the rights of the Company and its Subsidiaries, which are expressly reserved, to discharge Participant at any time for any reason whatsoever, with or without cause, except to the extent expressly provided otherwise in a written agreement between the Company and Participant.

5.13 Successors and Assigns. The Company may assign any of its rights under this Agreement to single or multiple assignees, and this Agreement shall inure to the benefit of the successors and assigns of the Company. Subject to the restrictions on transfer herein set forth, this Agreement shall be binding upon Participant and his or her heirs, executors, administrators, successors and assigns.

5.13 Notification of Disposition. If this Option is designated as an Incentive Stock Option, Participant shall give prompt notice to the Company of any disposition or other transfer of any shares of Stock acquired under this Agreement if such disposition or transfer is made (a) within two years from the Grant Date with respect to such shares or (b) within one year after the transfer of such shares to him. Such notice shall specify the date of such disposition or other transfer and the amount realized, in cash, other property, assumption of indebtedness or other consideration, by Participant in such disposition or other transfer.

5.14 Limitations Applicable to Section 16 Persons. Notwithstanding any other provision of the Plan or this Agreement, if Participant is subject to Section 16 of the Exchange Act, the Plan, the Option and this Agreement shall be subject to any additional limitations set forth in any applicable exemptive rule under Section 16 of the Exchange Act (including any amendment to Rule 16b-3 of the Exchange Act) that are requirements for the application of such exemptive rule. To the extent permitted by applicable law, this Agreement shall be deemed amended to the extent necessary to conform to such applicable exemptive rule.

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

Effective as of today, , the undersigned (“Participant”) hereby elects to exercise Participant’s option to purchase shares of the Stock (the “Shares”) of Zogenix, Inc. (the “Company”) under and pursuant to the Zogenix, Inc. 2006 Equity Incentive Plan (the “Plan”) and the Stock Option Grant Notice and Stock Option Agreement dated , (the “Option Agreement”). Capitalized terms used herein without definition shall have the meanings given in the Option Agreement.

1. Representations of Participant. Participant acknowledges that Participant has received, read and understood the Plan and the Option Agreement. Participant agrees to abide by and be bound by their terms and conditions.

2. Rights as Stockholder. Until the Shares are issued (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no right to vote or receive dividends or any other rights as a stockholder shall exist with respect to Shares subject to the Option, notwithstanding the 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 Shares are issued, except as provided in Article 10 of the Plan.

Participant shall enjoy rights as a stockholder until such time as Participant disposes of the Shares or the Company and/or its assignee(s) exercises the Right of First Refusal hereunder. Upon such exercise, Participant shall have no further rights as a holder of the Shares so purchased except the right to receive payment for the Shares so purchased in accordance with the provisions of this Agreement, and Participant shall forthwith cause the certificate(s), if any issued, evidencing the Shares so purchased to be surrendered to the Company for transfer or cancellation.

(a) Before any Shares held by Participant or any permitted transferee (each, a “Holder”) may be sold, pledged, assigned, hypothecated, transferred, or otherwise disposed of (each, a “Transfer”), the Company or its assignee(s) shall have a right of first refusal to purchase the Shares proposed to be Transferred on the terms and conditions set forth in this Section (the “Right of First Refusal”). In the event that the Company’s Bylaws contain a right of first refusal with respect to the Shares, such right of first refusal shall apply to the Shares to the extent such provisions are more restrictive than the Right of First Refusal set forth in this Section and the Right of First Refusal set forth in this Section shall not in any way restrict the operation of the Company’s Bylaws.

(b) In the event any Holder desires to Transfer any Shares, the Holder shall deliver to the Company a written notice (the “Notice”) stating: (i) the Holder’s bona fide intention to sell or otherwise Transfer such Shares; (ii) the name of each proposed purchaser or other transferee (“Proposed Transferee”); (iii) the number of Shares to be Transferred to each Proposed Transferee; and (iv) the price for which the Holder proposes to Transfer the Shares (the “Offered Price”), and the Holder shall offer such Shares at the Offered Price to the Company or its assignee(s).

(c) Within twenty-five days after receipt of the Notice, the Company and/or its assignee(s) may elect in writing to purchase all, but not less than all, of the Shares proposed to be Transferred to any one or more of the Proposed Transferees by delivery of a written exercise notice to the Holder (a “Company Notice”). The purchase price will be determined in accordance with subsection (d) below.

(d) The purchase price (“Purchase Price”) for the Shares repurchased under this Section shall be the Offered Price.

(e) Payment of the Purchase Price shall be made, at the option of the Company or its assignee(s), in cash (by check), by cancellation of all or a portion of any outstanding indebtedness of the Holder to the Company (or, in the case of repurchase by an assignee, to the assignee), or by any combination thereof within five days after delivery of the Company Notice or in the manner and at the times mutually agreed to by the Company and the Holder. Should the Offered Price specified in the Notice be payable in property other than cash, the Company shall have the right to pay the purchase price in the form of cash equal in amount to the value of such property. If the Holder and the Company cannot agree on such cash value within ten days after the Company’s receipt of the Notice, the valuation shall be made by the Board. The payment of the purchase price shall then be held on the later of (i) five days following delivery of the Company Notice or (ii) five days after such valuation shall have been made.

(f) If all or a portion of the Shares proposed in the Notice to be Transferred are not purchased by the Company and/or its assignee(s) as provided in this Section, then the Holder may sell or otherwise Transfer such Shares to that Proposed Transferee at the Offered Price or at a higher price, provided that such sale or other Transfer is consummated within sixty days after the date of the Notice and provided further that any such sale or other Transfer is effected in accordance with any applicable securities laws and the Proposed Transferee agrees in writing that the provisions of this Section shall continue to apply to the Shares in the hands of such Proposed Transferee. If the Shares described in the Notice are not Transferred to the Proposed Transferee within such sixty-day period, a new Notice shall be given to the Company, and the Company and/or its assignees shall again be offered the Right of First Refusal as provided herein before any Shares held by the Holder may be sold or otherwise Transferred.

(g) Anything to the contrary contained in this Section notwithstanding, the Transfer of any or all of the Shares during Participant’s lifetime or upon Participant’s death by will or intestacy to Participant’s Immediate Family or a trust for the benefit of Participant’s Immediate Family shall be exempt from the Right of First Refusal. As used herein, “Immediate Family” shall mean spouse, lineal descendant or antecedent, father, mother, brother or sister or stepchild (whether or not adopted). In such case, the transferee or other recipient shall receive and hold the Shares so Transferred subject to the provisions of this Section (including the Right of First Refusal) and the Restricted Stock Purchase Agreement, if applicable, and there shall be no further Transfer of such Shares except in accordance with the terms of this Section.

(h) The Right of First Refusal shall terminate as to all Shares upon the Public Trading Date.

(i) Any transfer or sale of the Shares is subject to restrictions on transfer imposed by any applicable state and federal securities laws. Any Transfer or attempted Transfer of any of the Shares not in accordance with the terms of this Agreement shall be void and the Company may enforce the terms of this Agreement by stop transfer instructions or similar actions by the Company and its agents or designees.

4. Tax Consultation. Participant understands that Participant may suffer adverse tax consequences as a result of Participant’s purchase or disposition of the Shares. Participant represents that Participant has consulted with any tax consultants Participant deems advisable in connection with the purchase or disposition of the Shares and that Participant is not relying on the Company for any tax advice.

(a) Legends. Participant understands and agrees that the Company shall cause any certificates issued evidencing the Shares shall have the legends set forth below or legends substantially equivalent thereto, together with any other legends that may be required by state or federal securities laws:

THE SHARES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (“ACT”), NOR HAVE THEY BEEN REGISTERED OR QUALIFIED UNDER THE SECURITIES LAWS OF ANY STATE. NO TRANSFER OF SUCH SECURITIES WILL BE PERMITTED UNLESS A REGISTRATION STATEMENT UNDER THE ACT IS IN EFFECT AS TO SUCH TRANSFER, THE TRANSFER IS MADE IN ACCORDANCE WITH RULE 144 UNDER THE ACT, OR IN THE OPINION OF COUNSEL (WHICH MAY BE COUNSEL FOR THE COMPANY) REGISTRATION UNDER THE ACT IS UNNECESSARY IN ORDER FOR SUCH TRANSFER TO COMPLY WITH THE ACT AND WITH APPLICABLE STATE SECURITIES LAWS.

THE SHARES REPRESENTED BY THIS CERTIFICATE MAY BE TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF AN AGREEMENT BETWEEN THE COMPANY AND THE STOCKHOLDER, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY. SUCH TRANSFER RESTRICTIONS ARE BINDING ON TRANSFEREES OF THESE SHARES.

(c) The Company shall not be required (i) to transfer on its books any Shares that have been sold or otherwise transferred in violation of any of the provisions of this Agreement or (ii) to treat as owner of such Shares or to accord the right to vote or pay dividends to any purchaser or other transferee to whom such Shares shall have been so transferred.

6. Participant Representations. Participant hereby makes the following certifications and representations with respect to the Shares listed above:

(a) Participant is aware of the Company’s business affairs and financial condition and has acquired sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Shares. Participant is acquiring these Shares for investment for Participant’s own account only and not with a view to, or for resale in connection with, any “distribution” thereof within the meaning of the Securities Act.

(b) Participant acknowledges and understands that the Shares constitute “restricted securities” under the Securities Act and have not been registered under the Securities Act in reliance upon a specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of Participant’s investment intent as expressed herein. Participant understands that the Shares must be held indefinitely unless they are subsequently registered under the Securities Act or an exemption from such registration is available. Participant further acknowledges and understands that the Company is under no obligation to register the Shares. Participant understands that the certificate evidencing the Shares will be imprinted with a legend which prohibits the transfer of the Shares unless they are registered or such registration is not required in the opinion of counsel satisfactory to the Company and any other legend required under applicable state securities laws.

(c) Participant is familiar with the provisions of Rule 701 and Rule 144, each promulgated under the Securities Act, which, in substance, permit limited public resale of “restricted securities” acquired, directly or indirectly from the issuer thereof, in a non-public offering subject to the satisfaction of certain conditions. Rule 701 provides that if the issuer qualifies under Rule 701 at the time of the grant of the Option to Participant, the exercise will be exempt from registration under the Securities Act. In the event the Company becomes subject to the reporting requirements of Section 13 or 15(d) of the Exchange Act, ninety days thereafter (or such longer period as any market stand-off agreement may require) the securities exempt under Rule 701 may be resold, subject to the satisfaction of certain of the conditions specified by Rule 144, including: (i) the resale being made through a broker in an unsolicited “broker’s transaction” or in transactions directly with a market maker (as said term is defined under the Exchange Act); and, in the case of an affiliate, (ii) the availability of certain public information about the Company, (iii) the amount of securities being sold during any three month period not exceeding the limitations specified in Rule 144(e), and (iv) the timely filing of a Form 144, if applicable.

(d) In the event that the Company does not qualify under Rule 701 at the time of grant of the Option, then the securities may be resold in certain limited circumstances subject to the provisions of Rule 144, which requires the resale to occur not less than one year after the later of the date the securities were sold by the Company or the date the securities were sold by an affiliate of the Company, within the meaning of Rule 144; and, in the case of acquisition of the securities by an affiliate, or by a non-affiliate who subsequently holds the securities less than two years, the satisfaction of the conditions set forth in sections (i), (ii), (iii) and (iv) of paragraph (c) above.

(e) Participant further understands that in the event all of the applicable requirements of Rule 701 or 144 are not satisfied, registration under the Securities Act, compliance with Regulation A, or some other registration exemption will be required; and that, notwithstanding the fact that Rules 144 and 701 are not exclusive, the Staff of the Securities and Exchange Commission has expressed its opinion that persons proposing to sell private placement securities other than in a registered offering and otherwise than pursuant to Rules 144 or 701 will have a substantial burden of proof in establishing that an exemption from registration is available for such offers or sales, and that such persons and their respective brokers who participate in such transactions do so at their own risk. Participant understands that no assurances can be given that any such other registration exemption will be available in such event.

7. Successors and Assigns. The Company may assign any of its rights under this Agreement to single or multiple assignees, and this Agreement shall inure to the benefit of the successors and assigns of the Company. Subject to the restrictions on transfer herein set forth, this Agreement shall be binding upon Participant and his or her heirs, executors, administrators, successors and assigns.

8. Interpretation. Any dispute regarding the interpretation of this Agreement shall be submitted by Participant or by the Company forthwith to the Administrator, which shall review such dispute at its next regular meeting. The resolution of such a dispute by the Administrator shall be final and binding on the Company and on Participant.

9. Governing Law; Severability. This Agreement shall be governed by and construed in accordance with the laws of the State of California, excluding that body of law pertaining to conflicts of law. Should any provision of this Agreement be determined by a court of law to be illegal or unenforceable, the other provisions shall nevertheless remain effective and shall remain enforceable.

10. Notices. Any notice required or permitted hereunder shall be given in accordance with the provisions set forth in Section 5.6 of the Option Agreement.

11. Further Instruments. The parties agree to execute such further instruments and to take such further action as may be reasonably necessary to carry out the purposes and intent of this Agreement.

12. Entire Agreement. The Plan and Option Agreement are incorporated herein by reference. This Agreement, the Plan and the Option Agreement constitute the entire agreement of the parties and supersede in their entirety all prior undertakings and agreements of the Company and Participant with respect to the subject matter hereof.

I, , spouse of , have read and approve the Option Agreement and this Exercise Notice between my spouse and Zogenix, Inc. In consideration of granting of the right to my spouse to purchase shares of Zogenix, Inc. set forth in the Option Agreement and this Exercise Notice, I hereby appoint my spouse as my attorney-in-fact in respect to the exercise of any rights under the Option Agreement and this Exercise Notice and agree to be bound by the provisions of the Plan, the Option Agreement and this Exercise Notice insofar as I may have any rights in said agreements or any shares issued pursuant thereto under the community property laws or similar laws relating to marital property in effect in the state of our residence as of the date of the signing of the foregoing Exercise Notice.

1.1 Defined Terms. Capitalized terms not specifically defined herein shall have the meanings specified in the Plan and the Grant Notice.

1.2 Incorporation of Terms of Plan. The Option is subject to the terms and conditions of the Plan which are incorporated herein by reference.

(a) Subject to Sections 3.3 and 5.8, the Option shall become vested and exercisable in such amounts and at such times as are set forth in the Grant Notice. Alternatively, at the election of the Participant, this Option may be exercised in whole or in part at such times as are established by the Administrator as to shares of Stock which have not yet vested. Vested shares shall not be subject to the Company’s Repurchase Option (as set forth in the Restricted Stock Purchase Agreement). As a condition to exercising this Option for unvested shares of Stock, the Participant shall execute the Restricted Stock Purchase Agreement.

3.3 Expiration of Option. The Option may not be exercised to any extent by anyone after the first to occur of the following events:

(c) The expiration of three months following the date of Participant’s Termination of Service, unless such termination occurs by reason of Participant’s death, Disability or Misconduct;

(d) The expiration of one year following the date of Participant’s Termination of Service by reason of Participant’s death or Disability; or

(e) The date of Participant’s Termination of Service as a result of Participant’s Misconduct.

(b) A Restricted Stock Purchase Agreement, if applicable, substantially in the form attached as Exhibit C to the Grant Notice;

(i) Full payment (in cash or by check) for the shares with respect to which the Option or portion thereof is exercised; or

(ii) With the consent of the Administrator, by delivery of a full recourse promissory note on such terms and conditions as may be approved by the Administrator; or

(vi) Subject to any applicable laws, any combination of the consideration provided in the foregoing paragraphs (i), (ii) and (iii); and

(d) A bona fide written representation and agreement, in such form as is prescribed by the Administrator, signed by Participant or the other person then entitled to exercise such Option or portion thereof, stating that the shares of Stock are being acquired for Participant’s own account, for investment and without any present intention of distributing or reselling said shares or any of them except as may be permitted under the Securities Act and then applicable rules and regulations thereunder, and that Participant or other person then entitled to exercise such Option or portion thereof will indemnify the Company against and hold it free and harmless from any loss, damage, expense or liability resulting to the Company if any sale or distribution of the shares by such person is contrary to the representation and agreement referred to above. The Administrator may, in its absolute discretion, take whatever additional actions it deems appropriate to ensure the observance and performance of such representation and agreement and to effect compliance with the Securities Act and any other federal or state securities laws or regulations. Without limiting the generality of the foregoing, the Administrator may require an opinion of counsel acceptable to it to the effect that any subsequent transfer of shares acquired on an Option exercise does not violate the Securities Act, and may issue stop-transfer orders covering such shares. Share certificates evidencing Stock issued on exercise of the Option shall bear an appropriate legend referring to the provisions of this subsection (d) and the agreements herein. The written representation and agreement referred to in the first sentence of this subsection (d) shall, however, not be required if the shares to be issued pursuant to such exercise have been registered under the Securities Act, and such registration is then effective in respect of such shares; and

(f) In the event the Option or portion thereof shall be exercised pursuant to Section 4.1 by any person or persons other than Participant, appropriate proof of the right of such person or persons to exercise the Option.

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

(d) The lapse of such reasonable period of time following the exercise of the Option as the Administrator may from time to time establish for reasons of administrative convenience; and

(a) The share certificate or certificates evidencing the shares of Stock purchased hereunder shall be endorsed with any legends that may be required by state or federal securities laws.

5.7 Titles. Titles are provided herein for convenience only and are not to serve as a basis for interpretation or construction of this Agreement.

5.14 Limitations Applicable to Section 16 Persons. Notwithstanding any other provision of the Plan or this Agreement, if Participant is subject to Section 16 of the Exchange Act, the Plan, the Option, the Shares and this Agreement shall be subject to any additional limitations set forth in any applicable exemptive rule under Section 16 of the Exchange Act (including any amendment to Rule 16b-3 of the Exchange Act) that are requirements for the application of such exemptive rule. To the extent permitted by applicable law, this Agreement shall be deemed amended to the extent necessary to conform to such applicable exemptive rule.

(d) The purchase price (“Purchase Price”) for the Shares repurchased under this Section shall be the Offered Price.

(f) If all or a portion of the Shares proposed in the Notice to be Transferred are not purchased by the Company and/or its assignee(s) as provided in this Section, then the Holder may sell or otherwise Transfer such Shares to that Proposed Transferee at the Offered Price or at a higher price, provided that such sale or other Transfer is consummated within sixty days after the date of the Notice and provided further that any such sale or other Transfer is effected in accordance with any applicable securities laws and the Proposed Transferee agrees in writing that the provisions of this Section and the Restricted Stock Purchase Agreement, if applicable, shall continue to apply to the Shares in the hands of such Proposed Transferee. If the Shares described in the Notice are not Transferred to the Proposed Transferee within such sixty-day period, a new Notice shall be given to the Company, and the Company and/or its assignees shall again be offered the Right of First Refusal as provided herein before any Shares held by the Holder may be sold or otherwise Transferred.

(h) The Right of First Refusal shall terminate as to all Shares upon the Public Trading Date.

6. Participant Representations. Participant hereby makes the following certifications and representations with respect to the Shares listed above:

10. Notices. Any notice required or permitted hereunder shall be given in accordance with the provisions set forth in Section 5.6 of the Option Agreement.

11. Further Instruments. The parties agree to execute such further instruments and to take such further action as may be reasonably necessary to carry out the purposes and intent of this Agreement.

12. Entire Agreement. The Plan and Option Agreement are incorporated herein by reference. This Agreement, the Plan and the Option Agreement, and the Restricted Stock Purchase Agreement, if applicable, constitute the entire agreement of the parties and supersede in their entirety all prior undertakings and agreements of the Company and Participant with respect to the subject matter hereof.

THIS RESTRICTED STOCK PURCHASE AGREEMENT is made between (the “Purchaser”) and Zogenix, Inc. (the “Company”), as of , .

(1) Pursuant to the exercise of the Option granted to Purchaser under the Company’s 2006 Equity Incentive Plan (the “Plan”) and pursuant to the Stock Option Agreement (the “Option Agreement”) dated , , by and between the Company and Purchaser with respect to such grant, which Option Agreement is hereby incorporated by reference, Purchaser has elected to purchase of those shares which have not become vested under the vesting schedule set forth in the Option Agreement (“Unvested Shares”). The Unvested Shares and the shares subject to the Option Agreement which have become vested are sometimes collectively referred to herein as the “Shares”.

(2) As required by the Option Agreement, as a condition to Purchaser’s election to exercise the option, Purchaser must execute this Restricted Stock Purchase Agreement, which sets forth the rights and obligations of the parties with respect to Shares acquired upon exercise of the Option.

(a) In the event of Purchaser’s Termination of Service (as defined in the Option Agreement), for any reason, including for cause, death, Disability or Misconduct, the Company shall have the right and option to purchase from Purchaser, or Purchaser’s personal representative, as the case may be, all of Purchaser’s Unvested Shares as of the date of the Purchaser’s Termination of Service at the exercise price paid by Purchaser for such Shares in connection with the exercise of the Option (the “Repurchase Option”).

(b) The Company may exercise its Repurchase Option by delivering, personally or by registered mail, to Purchaser (or his or her transferee or legal representative, as the case may be), within ninety days of the date of the Purchaser’s Termination of Service, a notice in writing indicating the Company’s intention to exercise the Repurchase Option and setting forth a date for closing not later than thirty days from the mailing of such notice. The closing shall take place at the Company’s office. At the closing, the holder of the certificates for the Unvested Shares being transferred shall deliver the stock certificate or certificates evidencing the Unvested Shares, and the Company shall deliver the purchase price therefor.

(c) At its option, the Company may elect to make payment for the Unvested Shares to a bank selected by the Company. The Company shall avail itself of this option by a notice in writing to Purchaser stating the name and address of the bank, date of closing, and waiving the closing at the Company’s office.

(d) If the Company does not elect to exercise the Repurchase Option conferred above by giving the requisite notice within ninety days following the date of Purchaser’s Termination of Service, the Repurchase Option shall terminate.

(e) 100% of the Unvested Shares shall initially be subject to the Repurchase Option. The Unvested Shares shall be released from the Repurchase Option in accordance with the Vesting Schedule set forth in the Option Agreement until all Shares are released from the Repurchase Option. Fractional Shares shall be rounded down to the nearest whole share.

(a) Purchaser hereby authorizes and directs the secretary of the Company, or such other person designated by the Company from time to time, to transfer the Unvested Shares as to which the Repurchase Option has been exercised from Purchaser to the Company.

(b) To insure the availability for delivery of Purchaser’s Unvested Shares upon repurchase by the Company pursuant to the Repurchase Option under Section 1, Purchaser hereby appoints the assistant secretary, or any other person designated by the Company from time to time as escrow agent, as its attorney-in-fact to sell, assign and transfer unto the Company, such Unvested Shares, if any, repurchased by the Company pursuant to the Repurchase Option. If certificates for the Shares are issued, then Purchaser shall, upon execution of this Agreement, deliver and deposit with the assistant secretary of the Company, or such other person designated by the Company from time to time, any share certificate(s) issued representing the Unvested Shares, together with the stock assignment duly endorsed in blank, attached hereto as Exhibit C-1. The Unvested Shares and stock assignment shall be held by the assistant secretary in escrow, pursuant to the Joint Escrow Instructions of the Company and Purchaser attached as Exhibit C-2 hereto, until the Company exercises its Repurchase Option as provided in Section 1, until such Unvested Shares are vested, or until such time as this Agreement no longer is in effect. As a further condition to the Company’s obligations under this Agreement, the spouse of Purchaser, if any, shall execute and deliver to the Company the Consent of Spouse set forth on the signature page hereto. Upon vesting of the Unvested Shares, the escrow agent shall promptly deliver to Purchaser the certificate or certificates representing such Shares in the escrow agent’s possession belonging to Purchaser, and the escrow agent shall be discharged of all further obligations hereunder; provided, however, that the escrow agent shall nevertheless retain such certificate or certificates as escrow agent if so required pursuant to other restrictions imposed pursuant to this Agreement. If the Shares are held in book entry form, then such entry will reflect that the Shares are subject to the restrictions of this Agreement.

(c) The Company, or its designee, shall not be liable for any act it may do or omit to do with respect to holding the Shares in escrow and while acting in good faith and in the exercise of its judgment.

(d) Transfer or sale of the Shares is subject to restrictions on transfer imposed by any applicable state and federal securities laws. Any transferee shall hold such Shares subject to all the provisions hereof and the Exercise Notice executed by Purchaser with respect to any Unvested Shares purchased by Purchaser and shall acknowledge the same by signing a copy of this Agreement. Any transfer or attempted transfer of any of the Shares not in accordance with the terms of this Agreement shall be void and the Company may enforce the terms of this Agreement by stop transfer instructions or similar actions by the Company and its agents or designees.

3. Ownership, Voting Rights, Duties. This Agreement shall not affect in any way the ownership, voting rights or other rights or duties of Purchaser, except as specifically provided herein.

4. Legends. Any share certificate evidencing the Shares issued hereunder shall be endorsed with the following legend (in addition to any legend required under applicable securities laws):

5. Adjustment for Stock Split. In the event of any stock dividend, stock split, reverse stock split, recapitalization, combination, reclassification, or similar change in the capital structure of the Company, the Administrator shall make appropriate and equitable adjustments in the Unreleased Shares subject to the Repurchase Option and the number of Shares, consistent with any adjustment under Section 11.1 of the Plan. The provisions of this Agreement shall apply, to the full extent set forth herein with respect to the Shares, to any and all shares of capital stock or other securities or other property or cash which may be issued in respect of, in exchange for, or in substitution of the Shares, and shall be appropriately adjusted for any stock dividends, splits, reverse splits, combinations, recapitalizations and the like occurring after the date hereof.

6. Notices. Notices required hereunder shall be given in person or by registered mail to the address of Purchaser shown on the records of the Company, and to the Company at its principal executive office.

7. Survival of Terms. This Agreement shall apply to and bind Purchaser and the Company and their respective permitted assignees and transferees, heirs, legatees, executors, administrators and legal successors.

(a) Election for Unvested Shares Purchased Pursuant to a Non-Qualified Stock Option. Purchaser hereby acknowledges that he or she has been informed that, with respect to the exercise of a Non-Qualified Stock Option for Unvested Shares, that unless an election is filed by Purchaser with the Internal Revenue Service and, if necessary, the proper state taxing authorities, within thirty days of the purchase of the Shares, electing pursuant to Section 83(b) of the Code (and similar state tax provisions if applicable) to be taxed currently on any difference between the purchase price of the Shares and their Fair Market Value on the date of purchase, there will be a recognition of taxable income to the Purchaser, measured by the excess, if any, of the fair market value of the Shares, at the time the Company’s Repurchase Option lapses over the purchase price for the Shares. Purchaser represents that Purchaser has consulted any tax consultant(s) Purchaser deems advisable in connection with the purchase of the Shares or the filing of the election under Section 83(b) and similar tax provisions.

(b) Election for Unvested Shares Purchased Pursuant to an Incentive Stock Option. Purchaser hereby acknowledges that he or she has been informed that, with respect to the exercise of an Incentive Stock Option for Unvested Shares, that unless an election is filed by Purchaser with the Internal Revenue Service and, if necessary, the proper state taxing authorities, within thirty days of the purchase of the Shares, electing pursuant to Section 83(b) of the Code (and similar state tax provisions if applicable) to be taxed currently on any difference between the purchase price of the Shares and their Fair Market Value on the date of purchase, there will be a recognition of income to the Purchaser, for alternative minimum tax purposes measured by the excess, if any, of the fair market value of the Shares at the time the Company’s Repurchase Option lapses over the purchase price for the Shares. Purchaser further acknowledges that if an election is filed under Section 83(b) of the Code for the Unvested Shares and such shares are sold or transferred prior to the date two years following the Grant Date and one year following the purchase date of such shares, there will be a recognition of income to the Purchaser, for ordinary income, measured by the excess, if any, of the fair market value of the Shares at the time the Company’s Repurchase Option lapses over the purchase price for the Shares. Purchaser represents that Purchaser has consulted any tax consultant(s) Purchaser deems advisable in connection with the purchase of the Shares or the filing of the election under Section 83(b) and similar tax provisions.

PURCHASER ACKNOWLEDGES THAT IT IS PURCHASER’S SOLE RESPONSIBILITY AND NOT THE COMPANY’S TO FILE TIMELY THE ELECTION UNDER SECTION 83(b), EVEN IF PURCHASER REQUESTS THE COMPANY OR ITS REPRESENTATIVE TO MAKE THIS FILING ON PURCHASER’S BEHALF.

9. Representations. Purchaser has reviewed with his or her own tax advisors the federal, state, local and foreign tax consequences of this investment and the transactions contemplated by this Agreement. Purchaser is relying solely on such advisors and not on any statements or representations of the Company or any of its agents. Purchaser understands that Purchaser (and not the Company) shall be responsible for his or her own tax liability that may arise as a result of this investment or the transactions contemplated by this Agreement.

10. Governing Law; Severability. This Agreement shall be governed by and construed in accordance with the laws of the State of California excluding that body of law pertaining to conflicts of law. Should any provision of this Agreement be determined by a court of law to be illegal or unenforceable, the other provisions shall nevertheless remain effective and shall remain enforceable.

Purchaser represents that he or she has read this Agreement and is familiar with its terms and provisions. Purchaser hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Administrator upon any questions arising under this Agreement.

IN WITNESS WHEREOF, this Agreement is deemed made as of the date first set forth above.


ZOGENIX, INC.

By:

Title:


PURCHASER

By:

Name:



Address:

I, , spouse of , have read and approve this Agreement between my spouse and Zogenix, Inc. In consideration of granting of the right to my spouse to purchase shares of Zogenix, Inc. set forth in the Agreement, I hereby appoint my spouse as my attorney-in-fact in respect to the exercise of any rights under the Agreement and agree to be bound by the provisions of the Plan, the Option Agreement and this Agreement insofar as I may have any rights in said agreements or any shares issued pursuant thereto under the community property laws or similar laws relating to marital property in effect in the state of our residence as of the date of the signing of the foregoing Agreement.

Signature of Spouse

FOR VALUE RECEIVED, the undersigned, , hereby sells, assigns and transfers unto Zogenix, Inc., a Delaware corporation (the “Company”), shares of the common stock of the Company standing in its name of the books of said corporation represented by Certificate No. herewith and do hereby irrevocably constitute and appoint to transfer the said stock on the books of the within named corporation with full power of substitution in the premises.

This Stock Assignment may be used only in accordance with the Restricted Stock Award Agreement between the Company and the undersigned dated , .




Print Name:

INSTRUCTIONS: Please do not fill in the blanks other than the signature line. The purpose of this assignment is to enable the Company to exercise its “Repurchase Option,” as set forth in the Restricted Stock Award Agreement, without requiring additional signatures on the part of Purchaser.

As Escrow Agent for both Zogenix, Inc. (the “Company”) and the undersigned purchaser of stock of the Company (the “Purchaser”), you are hereby authorized and directed to hold the documents delivered to you pursuant to the terms of that certain Restricted Stock Purchase Agreement (“Agreement”) between the Company and the undersigned, in accordance with the following instructions:

1. In the event the Company and/or any assignee of the Company (referred to collectively for convenience herein as the “Company”) exercises the Company’s Repurchase Option set forth in the Agreement, the Company shall give to Purchaser and you a written notice specifying the number of shares of stock to be purchased, the purchase price, and the time for a closing hereunder at the principal office of the Company. Purchaser and the Company hereby irrevocably authorize and direct you to close the transaction contemplated by such notice in accordance with the terms of said notice.

2. At the closing, you are directed (a) to date the stock assignments necessary for the transfer in question, (b) to fill in the number of shares being transferred, and (c) to deliver the same, together with the certificate evidencing the shares of stock to be transferred, to the Company or its assignee, against the simultaneous delivery to you of the purchase price (by cash, a check, or a combination thereof) for the number of shares of stock being purchased pursuant to the exercise of the Company’s Repurchase Option.

3. Purchaser irrevocably authorizes the Company to deposit with you any certificates evidencing shares of stock to be held by you hereunder and any additions and substitutions to said shares as defined in the Agreement. Purchaser does hereby irrevocably constitute and appoint you as Purchaser’s attorney-in-fact and agent for the term of this escrow to execute, with respect to such securities, all documents necessary or appropriate to make such securities negotiable and to complete any transaction herein contemplated, including but not limited to the filing with any applicable state blue sky authority of any required applications for consent to, or notice of transfer of, the securities. Subject to the provisions of this paragraph 3, Purchaser shall exercise all rights and privileges of a stockholder of the Company while the stock is held by you.

4. Upon written request of Purchaser, but no more than once per calendar year, unless the Company’s Repurchase Option has been exercised, you will deliver to Purchaser a certificate or certificates representing the number of shares of stock as are not then subject to the Company’s Repurchase Option. Within one hundred twenty days after the date of the Purchaser’s Termination of Service, you will deliver to Purchaser a certificate or certificates representing the aggregate number of shares held or issued pursuant to the Agreement and not purchased by the Company or its assignees pursuant to exercise of the Company’s Repurchase Option.

5. If at the time of termination of this escrow you should have in your possession any documents, securities, or other property belonging to Purchaser, you shall deliver all of the same to Purchaser and shall be discharged of all further obligations hereunder.

6. Your duties hereunder may be altered, amended, modified or revoked only by a writing signed by all of the parties hereto.

7. You shall be obligated only for the performance of such duties as are specifically set forth herein and may rely and shall be protected in relying or refraining from acting on any instrument reasonably believed by you to be genuine and to have been signed or presented by the proper party or parties. You shall not be personally liable for any act you may do or omit to do hereunder as Escrow Agent or as attorney-in-fact for Purchaser while acting in good faith, and any act done or omitted by you pursuant to the advice of your own attorneys shall be conclusive evidence of such good faith.

8. You are hereby expressly authorized to disregard any and all warnings given by any of the parties hereto or by any other person or corporation, excepting only orders or process of courts of law and are hereby expressly authorized to comply with and obey orders, judgments or decrees of any court. In case you obey or comply with any such order, judgment or decree, you shall not be liable to any of the parties hereto or to any other person, firm or corporation by reason of such compliance, notwithstanding any such order, judgment or decree being subsequently reversed, modified, annulled, set aside, vacated or found to have been entered without jurisdiction.

9. You shall not be liable in any respect on account of the identity, authorities or rights of the parties executing or delivering or purporting to execute or deliver the Agreement or any documents or papers deposited or called for hereunder.

10. You shall not be liable for the expiration of any rights under any applicable state, federal or local statute of limitations or similar statute or regulation with respect to these Joint Escrow Instructions or any documents deposited with you.

11. You shall be entitled to employ such legal counsel and other experts as you may deem necessary properly to advise you in connection with your obligations hereunder, may rely upon the advice of such counsel, and may pay such counsel reasonable compensation therefore.

12. Your responsibilities as Escrow Agent hereunder shall terminate if you shall cease to be an officer or agent of the Company or if you shall resign by written notice to each party. In the event of any such termination, the Company shall appoint a successor Escrow Agent.

13. If you reasonably require other or further instruments in connection with these Joint Escrow Instructions or obligations in respect hereto, the necessary parties hereto shall join in furnishing such instruments.

14. It is understood and agreed that should any dispute arise with respect to the delivery and/or ownership or right of possession of the securities held by you hereunder, you are authorized and directed to retain in your possession without liability to anyone all or any part of said securities until such disputes shall have been settled either by mutual written agreement of the parties concerned or by a final order, decree or judgment of a court of competent jurisdiction after the time for appeal has expired and no appeal has been perfected, but you shall be under no duty whatsoever to institute or defend any such proceedings.

15. Any notice required or permitted hereunder shall be given in writing and shall be deemed effectively given upon personal delivery or upon deposit in the United States Post Office, by registered or certified mail with postage and fees prepaid, addressed to each of the other parties thereunto entitled at such addresses as a party may designate by written notice to each of the other parties hereto.

16. By signing these Joint Escrow Instructions, you become a party hereto only for the purpose of said Joint Escrow Instructions; you do not become a party to the Agreement.

17. This instrument shall be binding upon and inure to the benefit of the parties hereto, and their respective successors and permitted assigns.

18. These Joint Escrow Instructions shall be governed by, and construed and enforced in accordance with, the laws of the State of California, excluding that body of law pertaining to conflicts of law.

IN WITNESS WHEREOF, these Joint Escrow Instructions shall be effective as of the date first set forth above.


Very truly yours,

ZOGENIX, INC.

By:



Address:

PARTICIPANT:


Print
Name:
Address:


Participant:

Grant Date:

Vesting Commencement Date:

Exercise Price per Share:		$

Total Exercise Price:		$

Total Number of Shares Subject to the Option:

Expiration Date:


Grant Date:

Number of Shares as to which Option is Exercised:

Exercise Price per Share:		$

Total Exercise Price:		$

Certificate to be issued in name of:

Cash Payment delivered herewith:		$ (Representing the full Exercise Price for the Shares, as well as any applicable withholding tax)


Participant:

Grant Date:

Vesting Commencement Date:

Exercise Price per Share:		$

Total Exercise Price:		$

Total Number of Shares Subject to the Option:

Expiration Date:


Type of Option:		¨ Incentive Stock Option ¨ Non-Qualified Stock Option

Exercise Schedule:		x Early Exercise Permitted

Vesting Schedule:		This Option is exercisable immediately, in whole or in part, at such times as are established by the Administrator, conditioned upon Participant entering into a Restricted Stock Purchase Agreement with respect to any unvested shares of Stock. The shares subject to this Option shall vest and/or be released from the Company’s Repurchase Option, as set forth in the Restricted Stock Purchase Agreement attached hereto as Exhibit C (the “*Restricted Stock Purchase Agreement*”), according to the following schedule:

		[To be specified in individual agreements.]


Grant Date:

Number of Shares as to which Option is Exercised:

Exercise Price per Share:		$

Total Exercise Price:		$

Certificate to be issued in name of:

Cash Payment delivered herewith:		$ (Representing the full Exercise Price for the Shares, as well as any applicable withholding tax)


ESCROW AGENT:

By: