Exhibit 10.4

DOLBY LABORATORIES, INC.

2005 STOCK PLAN

| 1. | Purposes of the Plan. The purposes of this Plan are:

| • | to attract and retain the best available personnel for positions of substantial responsibility,

| • | to provide additional incentive to Employees, Directors and Consultants, and

| • | to promote the success of the Company’s business.

The Plan permits the grant of Incentive Stock Options, Nonstatutory Stock Options, Restricted Stock, Stock Appreciation Rights, Deferred Stock Units, Performance Units and Performance Shares.

| 2. | Definitions. As used herein, the following definitions will apply:

(a) “Administrator” means the Board or any of its Committees as will be administering the Plan, in accordance with Section 4 of the Plan.

(b) “Applicable Laws” means the requirements relating to the administration of equity-based awards or equity compensation programs under U.S. state corporate laws, U.S. federal and state securities laws, the Code, any stock exchange or quotation system on which the Common Stock is listed or quoted and the applicable laws of any foreign country or jurisdiction where Awards are, or will be, granted under the Plan.

(c) “Award” means, individually or collectively, a grant under the Plan of Options, SARs, Restricted Stock, Deferred Stock Units, Performance Units, or Performance Shares.

(d) “Award Agreement” means the written or electronic agreement setting forth the terms and provisions applicable to each Award granted under the Plan. The Award Agreement is subject to the terms and conditions of the Plan.

(e) “Awarded Stock” means the Common Stock subject to an Award.

(f) “Board” means the Board of Directors of the Company.

(g) “Cause” means, with respect to the termination by the Company or a Related Entity of a Participant, that such termination is for “Cause” as such term is expressly defined in a then-effective written agreement between the Participant and the Company or a Related Entity, or in the absence of such then-effective written agreement and definition, is based on, in the determination of the Administrator, the Participant’s: (i) refusal or failure to act in

accordance with any specific, lawful direction or order of the Company or a Related Entity; (ii) unfitness or unavailability for service or unsatisfactory performance (other than as a result of Disability); (iii) performance of any act or failure to perform any act in bad faith and to the detriment of the Company or Related Entity; (iv) dishonesty, intentional misconduct or material breach of any agreement with the Company or Related Entity; or (v) commission of a crime involving dishonesty, breach of trust, or physical or emotional harm to any person. At least 30 days prior to the termination of the Participant’s service pursuant to (i) or (ii) above, the Company or Related Entity shall provide the Participant with notice of the Company’s or Related Entity’s intent to terminate, the reason therefor, and an opportunity for the Participant to cure such defects in his or her service to the Company’s or Related Entity’s satisfaction. During this 30 day (or longer) period, no Award issued to the Participant under the Plan may be exercised or purchased.

(h) “Change in Control” means the occurrence of any of the following events:

(i) Any “person” (as such term is used in Sections 13(d) and 14(d) of the Exchange Act) other than a Permitted Transferee (as defined in the Company’s Amended and Restated Certificate of Incorporation) becomes the “beneficial owner” (as defined in Rule 13d-3 of the Exchange Act), directly or indirectly, of securities of the Company representing fifty percent (50%) or more of the total voting power represented by the Company’s then outstanding voting securities; or

(ii) The consummation of the sale or disposition by the Company of all or substantially all of the Company’s assets; or

(iii) A change in the composition of the Board occurring within a two-year period, as a result of which fewer than a majority of the directors are Incumbent Directors. “Incumbent Directors” means directors who either (A) are Directors as of the effective date of the Plan, or (B) are elected, or nominated for election, to the Board with the affirmative votes of at least a majority of the Directors at the time of such election or nomination (but will not include an individual whose election or nomination is in connection with an actual or threatened proxy contest relating to the election of directors to the Company); or

(iv) The consummation of a merger or consolidation of the Company with any other corporation, other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity or its parent) at least fifty percent (50%) of the total voting power represented by the voting securities of the Company or such surviving entity or its parent outstanding immediately after such merger or consolidation.

(i) “Code” means the Internal Revenue Code of 1986, as amended. Any reference to a section of the Code herein will be a reference to any successor or amended section of the Code.

(j) “Committee” means a committee of Directors or other individuals satisfying Applicable Laws appointed by the Board in accordance with Section 4 of the Plan.

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(k) “Common Stock” means the Class A Common Stock of the Company, or in the case of certain Stock Appreciation Rights or Performance Units, the cash equivalent thereof.

(l) “Company” means Dolby Laboratories, Inc., a Delaware corporation, or any successor thereto.

(m) “Consultant” means any person, including an advisor, engaged by the Company or a Related Entity to render services to such entity.

(n) “Deferred Stock Unit” means an Award that the Administrator permits to be paid in installments or on a deferred basis pursuant to Sections 4 and 11 of the Plan.

(o) “Director” means a member of the Board.

(p) “Disability” means total and permanent disability as defined in Section 22(e)(3) of the Code, provided that in the case of Awards other than Incentive Stock Options, the Administrator in its discretion may determine whether a permanent and total disability exists in accordance with uniform and non-discriminatory standards adopted by the Administrator from time to time.

(q) “Dividend Equivalent” means a credit, made at the discretion of the Administrator, to the account of a Participant in an amount equal to the cash dividends paid on one Share for each Share represented by an Award held by such Participant.

(r) “Employee” means any person, including Officers and Directors, employed by the Company or a Related Entity. Neither service as a Director nor payment of a director’s fee by the Company or Related Entity will be sufficient to constitute “employment” by the Company or Related Entity.

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

(t) “Fair Market Value” means, as of any date and unless the Administrator determines otherwise, the value of Common Stock determined as follows:

(i) If the Common Stock is listed on any established stock exchange or a national market system, including without limitation the Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its Fair Market Value will be the closing sales price for such stock (or the closing bid, if no sales were reported) as quoted on such exchange or system for the day of determination, as reported in The Wall Street Journal or such other source as the Administrator deems reliable;

(ii) If the Common Stock is regularly quoted by a recognized securities dealer but selling prices are not reported, the Fair Market Value of a Share of Common Stock will be the mean between the high bid and low asked prices for the Common Stock for the day of determination, as reported in The Wall Street Journal or such other source as the Administrator deems reliable; or

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(iii) In the absence of an established market for the Common Stock, the Fair Market Value will be determined in good faith by the Administrator.

(iv) Notwithstanding the preceding, for federal, state, and local income tax reporting purposes and for such other purposes as the Administrator deems appropriate, the Fair Market Value shall be determined by the Administrator in accordance with uniform and nondiscriminatory standards adopted by it from time to time.

(u) “Good Reason” means the occurrence following a Change in Control of any of the following events or conditions unless consented to by the Participant:

(i) a reduction in the Participant’s base salary to a level below that in effect at any time within six (6) months preceding the consummation of a Change in Control or at any time thereafter; or

(ii) requiring the Participant to be based at any place outside a 50-mile radius from the Participant’s job location or residence prior to the Change in Control except for reasonably required travel on business which is not materially greater than such travel requirements prior to the Change in Control.

(v) “Incentive Stock Option” means an Option intended to qualify as an incentive stock option within the meaning of Section 422 of the Code and the regulations promulgated thereunder.

(w) “Inside Director” means a Director who is an Employee.

(x) “Nonstatutory Stock Option” means an Option that by its terms does not qualify or is not intended to qualify as an Incentive Stock Option.

(y) “Officer” means a person who is an officer of the Company within the meaning of Section 16 of the Exchange Act and the rules and regulations promulgated thereunder.

(z) “Option” means a stock option granted pursuant to the Plan.

(aa) “Outside Director” means a Director who is not an Employee.

(bb) “Parent” means a “parent corporation,” whether now or hereafter existing, as defined in Section 424(e) of the Code.

(cc) “Participant” means the holder of an outstanding Award.

(dd) “Performance Goals” means the goal(s) determined by the Administrator (in its discretion) to be applicable to a Participant with respect to an Award. As determined by the Administrator, the Performance Goals applicable to an Award may provide for a targeted level or levels of achievement using certain Company or individual performance measures. The Performance Goals may differ from Participant to Participant and from Award to Award. Any criteria used may be measured, as applicable, (i) in absolute terms, (ii) in relative terms

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(including, but not limited to, passage of time and/or against another company or companies), (iii) on a per-share basis, (iv) against the performance of the Company as a whole or a segment of the Company, and (v) on a pre-tax or after-tax basis.

(ee) “Performance Share” means an Award granted to a Service Provider pursuant to Section 10 of the Plan.

(ff) “Performance Unit” means an Award granted to a Service Provider pursuant to Section 10 of the Plan.

(gg) “Period of Restriction” means the period during which the transfer of Shares of Restricted Stock are subject to restrictions and therefore, the Shares are subject to a substantial risk of forfeiture. Such restrictions may be based on the passage of time, continued service, the achievement of Performance Goals, and/or the occurrence of other events as determined by the Administrator.

(hh) “Plan” means this 2005 Stock Plan.

(ii) “Registration Date” means the effective date of the first registration statement that is filed by the Company and declared effective pursuant to Section 12(g) of the Exchange Act, with respect to any class of the Company’s securities.

(jj) “Related Entity” means any Parent, Subsidiary and any business, corporation, partnership, limited liability company or other entity in which the Company, a Parent or a Subsidiary holds a substantial ownership interest, directly or indirectly.

(kk) “Restricted Stock” means Shares issued pursuant to a Restricted Stock award under the Plan or issued pursuant to the early exercise of an Option.

(ll) “Rule 16b-3” means Rule 16b-3 of the Exchange Act or any successor to Rule 16b-3, as in effect when discretion is being exercised with respect to the Plan.

(mm) “Section 16(b) “ means Section 16(b) of the Exchange Act.

(nn) “Service Provider” means an Employee, Director or Consultant.

(oo) “Share” means a share of the Common Stock, as adjusted in accordance with Section 15 of the Plan.

(pp) “Stock Appreciation Right” or “SAR” means an Award, granted alone or in connection with an Option, that pursuant to Section 9 of the Plan is designated as a SAR.

(qq) “Subsidiary” means a “subsidiary corporation”, whether now or hereafter existing, as defined in Section 424(f) of the Code.

(rr) “Unvested Awards” shall mean Options or Restricted Stock that (i) were granted to an individual in connection with such individual’s position as a Service Provider and (ii) are still subject to vesting or lapsing of Company repurchase rights or similar restrictions.

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| 3. | Stock Subject to the Plan.

(a) Stock Subject to the Plan. Subject to the provisions of Section 15 of the Plan, the maximum aggregate number of Shares that may be issued under the Plan is 6,000,000. Any Shares subject to Awards with a per Share price equal to or greater than 100% of Fair Market Value on the date of grant shall be counted against the numerical limits of this Section 3 as one Share for every Share subject thereto. Except as provided in the previous sentence, any Shares or units subject to Awards with a per Share or unit price lower than 100% of Fair Market Value on the date of grant shall be counted against the numerical limits of this Section 3 as 2.0 Shares for every one Share subject thereto and shall be counted as 2.0 Shares for every one Share returned to or deemed not issued from the Plan pursuant to this Section 3. The Shares may be authorized, but unissued, or reacquired Common Stock. Shares shall not be deemed to have been issued pursuant to the Plan with respect to any portion of an Award that is settled in cash. Upon payment in Shares pursuant to the exercise or settlement of an Award, the number of Shares available for issuance under the Plan shall be reduced only by the number of Shares actually issued in such payment. If a Participant pays the exercise price (or purchase price, if applicable) of an Award or pays the applicable withholding taxes related to the Award through the tender of Shares, the number of Shares so tendered shall again be available for issuance pursuant to future Awards under the Plan.

(b) Lapsed Awards. If any outstanding Award expires or is terminated or canceled without having been exercised or settled in full, or if Shares acquired pursuant to an Award subject to forfeiture or repurchase are forfeited or repurchased by the Company, the Shares allocable to the terminated portion of such Award or such forfeited or repurchased Shares shall again be available for grant under the Plan.

| 4. | Administration of the Plan.

(a) Procedure.

(i) Multiple Administrative Bodies. Different Committees with respect to different groups of Service Providers may administer the Plan.

(ii) Section 162(m). To the extent that the Administrator determines it to be desirable or necessary to qualify Awards granted hereunder as “performance-based compensation” within the meaning of Section 162(m) of the Code, the Plan will be administered by a Committee of two or more “outside directors” within the meaning of Section 162(m) of the Code.

(iii) Rule 16b-3. To the extent desirable to qualify transactions hereunder as exempt under Rule 16b-3, the transactions contemplated hereunder will be structured to satisfy the requirements for exemption under Rule 16b-3.

(iv) Other Administration. Other than as provided above, the Plan will be administered by (A) the Board or (B) a Committee, which committee will be constituted to satisfy Applicable Laws.

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(v) Delegation of Authority for Day-to-Day Administration. Except to the extent prohibited by Applicable Law, the Administrator may delegate to one or more individuals the day-to-day administration of the Plan and any of the functions assigned to it in this Plan. Such delegation may be revoked at any time.

(b) Powers of the Administrator. Subject to the provisions of the Plan, and in the case of a Committee, subject to the specific duties delegated by the Board to such Committee, the Administrator will have the authority, in its discretion:

(i) to determine the Fair Market Value;

(ii) to select the Service Providers to whom Awards may be granted hereunder;

(iii) to determine the number of Shares to be covered by each Award granted hereunder;

(iv) to approve forms of agreement for use under the Plan;

(v) to determine the terms and conditions, not inconsistent with the terms of the Plan, of any Award granted hereunder. Such terms and conditions include, but are not limited to, the exercise price, the time or times when Awards may be exercised (which may be based on performance criteria), any vesting acceleration or waiver of forfeiture or repurchase restrictions, and any restriction or limitation regarding any Award or the Shares relating thereto, based in each case on such factors as the Administrator, in its sole discretion, will determine;

(vi) to construe and interpret the terms of the Plan and Awards granted pursuant to the Plan;

(vii) to prescribe, amend and rescind rules and regulations relating to the Plan, including rules and regulations relating to sub-plans established for the purpose of satisfying applicable foreign laws including qualifying for preferred tax treatment under applicable foreign tax laws;

(viii) to modify or amend each Award (subject to Section 17(c) of the Plan), including the discretionary authority to extend the post-termination exercisability period of Awards longer than is otherwise provided for in the Plan;

(ix) to allow Participants to satisfy withholding tax obligations by electing to have the Company withhold from the Shares or cash to be issued upon exercise, settlement or vesting of an Award that number of Shares or cash having a Fair Market Value equal to the minimum amount required to be withheld. The Fair Market Value of any Shares to be withheld will be determined on the date that the amount of tax to be withheld is to be determined. All elections by a Participant to have Shares or cash withheld for this purpose will be made in such form and under such conditions as the Administrator may deem necessary or advisable;

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(x) to authorize any person to execute on behalf of the Company any instrument required to effect the grant of an Award previously granted by the Administrator;

(xi) to allow a Participant to defer the receipt of the payment of cash or the delivery of Shares that would otherwise be due to such Participant under an Award;

(xii) to determine whether Awards will be settled in Shares, cash or in any combination thereof;

(xiii) to determine whether Awards will be adjusted for Dividend Equivalents;

(xiv) to establish a program whereby Service Providers designated by the Administrator can reduce compensation otherwise payable in cash in exchange for Awards under the Plan;

(xv) to impose such restrictions, conditions or limitations as it determines appropriate as to the timing and manner of any resales by a Participant or other subsequent transfers by the Participant of any Shares issued as a result of or under an Award, including without limitation, (A) restrictions under an insider trading policy, and (B) restrictions as to the use of a specified brokerage firm for such resales or other transfers; and

(xvi) to make all other determinations deemed necessary or advisable for administering the Plan.

(c) Effect of Administrator’s Decision. The Administrator’s decisions, determinations and interpretations will be final and binding on all Participants and any other holders of Awards.

5. Eligibility. Nonstatutory Stock Options, Restricted Stock, Stock Appreciation Rights, Performance Units, Performance Shares and Deferred Stock Units may be granted to Service Providers. Incentive Stock Options may be granted only to Employees.

| 6. | Limitations.

(a) ISO $100,000 Rule. Each Option will be designated in the Award Agreement as either an Incentive Stock Option or a Nonstatutory Stock Option. However, notwithstanding such designation, to the extent that the aggregate Fair Market Value of the Shares with respect to which Incentive Stock Options are exercisable for the first time by the Participant during any calendar year (under all plans of the Company and a Related Entity) exceeds $100,000, such Options will be treated as Nonstatutory Stock Options. For purposes of this Section 6(a), Incentive Stock Options will be taken into account in the order in which they were granted. The Fair Market Value of the Shares will be determined as of the time the Option with respect to such Shares is granted.

(b) No Rights as a Service Provider. Neither the Plan nor any Award shall confer upon a Participant any right with respect to continuing his or her relationship as a Service Provider, nor shall they interfere in any way with the right of the Participant or the right of the Company or a Related Entity to terminate such relationship at any time, with or without cause.

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| 7. | Stock Options.

(a) Term of Option. The term of each Option will be stated in the Award Agreement. In the case of an Incentive Stock Option, the term will be ten (10) years from the date of grant or such shorter term as may be provided in the Award Agreement. Moreover, in the case of an Incentive Stock Option granted to a Participant who, at the time the Incentive Stock Option is granted, owns stock representing more than ten percent (10%) of the total combined voting power of all classes of stock of the Company or a Related Entity, the term of the Incentive Stock Option will be five (5) years from the date of grant or such shorter term as may be provided in the Award Agreement.

(b) Option Exercise Price. The per Share exercise price for the Shares to be issued pursuant to exercise of an Option will be determined by the Administrator; provided, however that in the case of an Incentive Stock Option and a Nonstatutory Stock Option intended to qualify as “performance-based compensation” within the meaning of Section 162(m) of the Code, the per Share exercise price will be no less than 100% of the Fair Market Value per Share on the date of grant. Notwithstanding the foregoing, in the case of an Incentive Stock Option granted to an Employee who, at the time the Incentive Stock Option is granted, owns stock representing more than ten percent (10%) of the voting power of all classes of stock of the Company or a Related Entity, the per Share exercise price will be no less than 110% of the Fair Market Value per Share on the date of grant.

(c) Waiting Period and Exercise Dates. At the time an Option is granted, the Administrator will fix the period within which the Option may be exercised and will determine any conditions that must be satisfied before the Option may be exercised.

(d) Form of Consideration. The Administrator will determine the acceptable form of consideration for exercising an Option, including the method of payment. In the case of an Incentive Stock Option, the Administrator will determine the acceptable form of consideration at the time of grant. Such consideration to the extent permitted by Applicable Laws may consist entirely of:

(i) cash;

(ii) check;

(iii) promissory note;

(iv) other Shares which meet the conditions established by the Administrator to avoid adverse accounting consequences (as determined by the Administrator);

(v) consideration received by the Company under a cashless exercise program implemented by the Company in connection with the Plan;

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(vi) a reduction in the amount of any Company liability to the Participant;

(vii) any combination of the foregoing methods of payment; or

(viii) such other consideration and method of payment for the issuance of Shares to the extent permitted by Applicable Laws.

(e) Exercise of Option.

(i) Procedure for Exercise; Rights as a Stockholder. Any Option granted hereunder will be exercisable according to the terms of the Plan and at such times and under such conditions as determined by the Administrator and set forth in the Award Agreement. An Option may not be exercised for a fraction of a Share.

An Option will be deemed exercised when the Company receives: (x) written or electronic notice of exercise (in accordance with the Award Agreement) from the person entitled to exercise the Option, and (y) full payment for the Shares with respect to which the Option is exercised (together with any applicable withholding taxes). Full payment may consist of any consideration and method of payment authorized by the Administrator and permitted by the Award Agreement and the Plan. Shares issued upon exercise of an Option will be issued in the name of the Participant or, if requested by the Participant, in the name of the Participant and his or her spouse. 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 will exist with respect to the Awarded Stock, notwithstanding the exercise of the Option. The Company will issue (or cause to be issued) such Shares promptly after the Option is exercised. 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 Section 15 of the Plan or the applicable Award Agreement.

Exercising an Option in any manner will decrease the number of Shares thereafter available for sale under the Option, by the number of Shares as to which the Option is exercised.

(ii) Termination of Relationship as a Service Provider. If a Participant ceases to be a Service Provider, other than upon the Participant’s death or Disability, the Participant may exercise his or her Option within such period of time as is specified in the Award Agreement to the extent that the Option is vested on the date of termination (but in no event later than the expiration of the term of such Option as set forth in the Award Agreement). In the absence of a specified time in the Award Agreement, the Option will remain exercisable for three (3) months following the Participant’s termination. Unless otherwise provided by the Administrator, if on the date of termination the Participant is not vested as to his or her entire Option, the Shares covered by the unvested portion of the Option will revert to the Plan. If after termination the Participant does not exercise his or her Option within the time specified by the Administrator, the Option will terminate, and the Shares covered by such Option will revert to the Plan.

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(iii) Disability of Participant. If a Participant ceases to be a Service Provider as a result of the Participant’s Disability, the Participant may exercise his or her Option within such period of time as is specified in the Award Agreement to the extent the Option is vested on the date of termination (but in no event later than the expiration of the term of such Option as set forth in the Award Agreement). In the absence of a specified time in the Award Agreement, the Option will remain exercisable for twelve (12) months following the Participant’s termination. Unless otherwise provided by the Administrator, if on the date of termination the Participant is not vested as to his or her entire Option, the Shares covered by the unvested portion of the Option will revert to the Plan. If after termination the Participant does not exercise his or her Option within the time specified herein, the Option will terminate, and the Shares covered by such Option will revert to the Plan.

(iv) Death of Participant. If a Participant dies while a Service Provider, the Option may be exercised following the Participant’s death within such period of time as is specified in the Award Agreement to the extent that the Option is vested on the date of death (but in no event may the option be exercised later than the expiration of the term of such Option as set forth in the Award Agreement), by the Participant’s designated beneficiary, provided such beneficiary has been designated prior to Participant’s death in a form acceptable to the Administrator. If no such beneficiary has been designated by the Participant, then such Option may be exercised by the personal representative of the Participant’s estate or by the person(s) to whom the Option is transferred pursuant to the Participant’s will or in accordance with the laws of descent and distribution. In the absence of a specified time in the Award Agreement, the Option will remain exercisable for twelve (12) months following Participant’s death. Unless otherwise provided by the Administrator, if at the time of death Participant is not vested as to his or her entire Option, the Shares covered by the unvested portion of the Option will immediately revert to the Plan. If the Option is not so exercised within the time specified herein, the Option will terminate, and the Shares covered by such Option will revert to the Plan.

| 8. | Restricted Stock.

(a) Grant of Restricted Stock. Subject to the terms and provisions of the Plan, the Administrator, at any time and from time to time, may grant Shares of Restricted Stock to Service Providers in such amounts as the Administrator, in its sole discretion, will determine.

(b) Restricted Stock Agreement. Each Award of Restricted Stock will be evidenced by an Award Agreement that will specify the Period of Restriction, the number of Shares granted, and such other terms and conditions as the Administrator, in its sole discretion, will determine. Unless the Administrator determines otherwise, Shares of Restricted Stock will be held by the Company as escrow agent until the restrictions on such Shares have lapsed.

(c) Transferability. Except as provided in this Section 8, Shares of Restricted Stock may not be sold, transferred, pledged, assigned, or otherwise alienated or hypothecated until the end of the applicable Period of Restriction.

(d) Other Restrictions. The Administrator, in its sole discretion, may impose such other restrictions on Shares of Restricted Stock as it may deem advisable or appropriate.

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(e) Removal of Restrictions. Except as otherwise provided in this Section 8, Shares of Restricted Stock covered by each Restricted Stock grant made under the Plan will be released from escrow as soon as practicable after the last day of the Period of Restriction. The Administrator, in its discretion, may accelerate the time at which any restrictions will lapse or be removed.

(f) Voting Rights. During the Period of Restriction, Service Providers holding Shares of Restricted Stock granted hereunder may exercise full voting rights with respect to those Shares, unless the Administrator determines otherwise.

(g) Dividends and Other Distributions. During the Period of Restriction, Service Providers holding Shares of Restricted Stock will be entitled to receive all dividends and other distributions paid with respect to such Shares unless otherwise provided in the Award Agreement. If any such dividends or distributions are paid in Shares, the Shares will be subject to the same restrictions on transferability and forfeitability as the Shares of Restricted Stock with respect to which they were paid.

(h) Return of Restricted Stock to Company. On the date set forth in the Award Agreement, the Restricted Stock for which restrictions have not lapsed will revert to the Company and again will become available for grant under the Plan.

| 9. | Stock Appreciation Rights.

(a) Grant of SARs. Subject to the terms and conditions of the Plan, a SAR may be granted to Service Providers at any time and from time to time as will be determined by the Administrator, in its sole discretion.

(b) Number of Shares. The Administrator will have complete discretion to determine the number of SARs granted to any Service Provider.

(c) Exercise Price and Other Terms. The Administrator, subject to the provisions of the Plan, will have complete discretion to determine the terms and conditions of SARs granted under the Plan.

(d) Exercise of SARs. SARs will be exercisable on such terms and conditions as the Administrator, in its sole discretion, will determine.

(e) SAR Agreement. Each SAR grant will be evidenced by an Award Agreement that will specify the exercise price, the term of the SAR, the conditions of exercise, and such other terms and conditions as the Administrator, in its sole discretion, will determine.

(f) Expiration of SARs. An SAR granted under the Plan will expire upon the date determined by the Administrator, in its sole discretion, and set forth in the Award Agreement. Notwithstanding the foregoing, the rules of Sections 7(e)(ii), 7(e)(iii) and 7(e)(iv) also will apply to SARs.

(g) Payment of SAR Amount. Upon exercise of an SAR, a Participant will be entitled to receive payment from the Company in an amount determined by multiplying:

(i) The difference between the Fair Market Value of a Share on the date of exercise over the exercise price; times

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(ii) The number of Shares with respect to which the SAR is exercised.

At the discretion of the Administrator, the payment upon SAR exercise may be in cash, in Shares of equivalent value, or in some combination thereof.

| 10. | Performance Units and Performance Shares.

(a) Grant of Performance Units/Shares. Subject to the terms and conditions of the Plan, Performance Units and Performance Shares may be granted to Service Providers at any time and from time to time, as will be determined by the Administrator, in its sole discretion. The Administrator will have complete discretion in determining the number of Performance Units and Performance Shares granted to each Participant.

(b) Value of Performance Units/Shares. Each Performance Unit will have an initial value that is established by the Administrator on or before the date of grant. Each Performance Share will have an initial value equal to the Fair Market Value of a Share on the date of grant.

(c) Performance Objectives and Other Terms. The Administrator will set performance objectives or other vesting provisions (including, without limitation, continued status as a Service Provider) in its discretion which, depending on the extent to which they are met, will determine the number or value of Performance Units/Shares that will be paid out to the Service Providers. The time period during which the performance objectives must be met will be called the “Performance Period.” Each Award of Performance Units/Shares will be evidenced by an Award Agreement that will specify the Performance Period, and such other terms and conditions as the Administrator, in its sole discretion, will determine. The Administrator may set Performance Goals based upon the achievement of Company-wide, divisional, or individual goals, applicable federal or state securities laws, or any other basis determined by the Administrator in its discretion.

(d) Earning of Performance Units/Shares. After the applicable Performance Period has ended, the holder of Performance Units/Shares will be entitled to receive a payout of the number of Performance Units/Shares earned by the Participant over the Performance Period, to be determined as a function of the extent to which the corresponding performance objectives have been achieved. After the grant of a Performance Unit/Share, the Administrator, in its sole discretion, may reduce or waive any performance objectives for such Performance Unit/Share.

(e) Form and Timing of Payment of Performance Units/Shares. Payment of earned Performance Units/Shares will be made as soon after the expiration of the applicable Performance Period at the time determined by the Administrator. The Administrator, in its sole discretion, may pay earned Performance Units/Shares in the form of cash, in Shares (which have an aggregate Fair Market Value equal to the value of the earned Performance Units/Shares at the close of the applicable Performance Period) or in a combination thereof.

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(f) Cancellation of Performance Units/Shares. On the date set forth in the Award Agreement, all unearned or unvested Performance Units/Shares will be forfeited to the Company, and again will be available for grant under the Plan.

11. Deferred Stock Units. Deferred Stock Units shall consist of a Restricted Stock, Performance Share or Performance Unit Award that the Administrator, in its sole discretion permits to be paid out in installments or on a deferred basis, in accordance with rules and procedures established by the Administrator. Deferred Stock Units may be settled, in the discretion of the Administrator, in cash, Shares or a combination thereof.

12. Outside Director Awards. Except as provided in Section 12(f), grants of Awards to Outside Directors pursuant to this Section 12 will be automatic and will be made in accordance with the following provisions:

(a) Type of Option. All Options granted pursuant to this Section 12 will be Nonstatutory Stock Options and, except as otherwise provided herein, will be subject to the other terms and conditions of the Plan.

(b) First Option. Each person who first becomes an Outside Director on or after the Registration Date automatically will be granted an Option to purchase 20,000 Shares (the “First Option”) on the date on which such person first becomes an Outside Director, whether through election by the stockholders of the Company or appointment by the Board to fill a vacancy; provided, however, that an Inside Director who ceases to be an Inside Director but who remains a Director will not receive a First Option.

(c) Subsequent Option. Each Outside Director automatically will be granted an Option to purchase 10,000 Shares (a “Subsequent Option”) (i) on July 15, 2005, and (ii) on the date of each annual meeting of the stockholders of the Company beginning as of the first annual meeting of stockholders after the end of the Company’s 2005 fiscal year, provided, in each case, he or she is then an Outside Director, and if as of each such date, he or she will have served on the Board for at least the preceding six (6) months.

(d) Terms. Except as provided in Section 12(f), the terms of each Option granted pursuant to this Section 12 will be as follows:

(i) The term of the Option will be ten (10) years.

(ii) The exercise price per Share will be 100% of the Fair Market Value per Share on the date of grant of the Option. In the event that the date of grant of the Option is not a trading day, the exercise price per Share shall be the Fair Market Value on the next trading day immediately following the date of grant of the Option.

(iii) Subject to Section 15 of the Plan, the First Option will vest and become exercisable as to 1/3 of the Shares subject to the First Option on the first anniversary of its date of grant, and as to 1/3 of the Shares subject to the First Option each full anniversary thereafter, provided that the Participant continues to serve as a Director on such dates;

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(iv) Subject to Section 15 of the Plan, the Subsequent Option will vest and become exercisable as to 1/3 of the Shares subject to the Subsequent Option on the first anniversary of its date of grant, and as to 1/3 of the Shares subject to the Subsequent Option each full anniversary thereafter, provided that the Participant continues to serve as a Director on such dates.

(e) Exercise of Options. An Option granted pursuant to this Section 12 will expire upon the date determined by the Administrator, in its sole discretion, and set forth in the Award Agreement. Notwithstanding the foregoing, the rules of Sections 7(e)(ii), 7(e)(iii) and 7(e)(iv) also will apply to such Option. To the extent that the Participant was not entitled to exercise an Option on the date of termination, or if he or she does not exercise such Option (to the extent otherwise so entitled) within the time specified herein, the Option shall terminate.

(f) Amendment. Notwithstanding the foregoing, the Administrator in its discretion may change the number of Shares subject to the First Options and Subsequent Options, may change the terms of such Options and may grant substitute Awards having an equivalent value to such Options as determined by the Board on the date of grant.

13. Leaves of Absence. Unless the Administrator provides otherwise, vesting of Awards granted hereunder will be suspended during any unpaid leave of absence and will resume on the date the Participant returns to work on a regular schedule as determined by the Company. A Service Provider will not cease to be an Employee in the case of (i) any leave of absence approved by the Company or (ii) transfers between locations of the Company or between the Company and a Related Entity. For purposes of Incentive Stock Options, no such leave may exceed ninety (90) days, unless reemployment upon expiration of such leave is guaranteed by statute or contract. If reemployment upon expiration of a leave of absence approved by the Company is not so guaranteed, then three months following the 91 st day of such leave any Incentive Stock Option held by the Participant will cease to be treated as an Incentive Stock Option and will be treated for tax purposes as a Nonstatutory Stock Option.

14. Non-Transferability of Awards. Unless determined otherwise by the Administrator, an Award may not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any manner other than by will or by the laws of descent or distribution and may be exercised, during the lifetime of the Participant, only by the Participant. If the Administrator makes an Award transferable, such Award will contain such additional terms and conditions as the Administrator deems appropriate.

| 15. | Adjustments; Dissolution or Liquidation; Merger or Change in Control.

(a) Adjustments. In the event that any dividend or other distribution (whether in the form of cash, Shares, other securities, or other property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination, repurchase, or exchange of Shares or other securities of the Company, or other change in the corporate structure of the Company affecting the Shares occurs such that an adjustment is determined by the Administrator (in its sole discretion) to be appropriate in order to prevent dilution or enlargement of the benefits or potential benefits intended to be made available under the Plan, then the Administrator shall, in such manner as it may deem equitable, adjust the number and class of

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Shares which may be delivered under the Plan, and the number, class, and price of Shares subject to outstanding Awards. Notwithstanding the preceding, the number of Shares subject to any Award always shall be a whole number.

(b) Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the Company, the Administrator will notify each Participant as soon as practicable prior to the effective date of such proposed transaction. The Administrator in its discretion may provide for a Participant to have the right to exercise his or her Award, to the extent applicable, until ten (10) days prior to such transaction as to all of the Awarded Stock covered thereby, including Shares as to which the Award would not otherwise be exercisable. In addition, the Administrator may provide that any Company repurchase option or forfeiture rights applicable to any Award shall lapse in full, and that any Award’s vesting schedule shall accelerate in full, provided the proposed dissolution or liquidation takes place at the time and in the manner contemplated. To the extent it has not been previously exercised or vested, an Award will terminate immediately prior to the consummation of such proposed action.

(c) Merger or Change in Control.

(i) Stock Options and SARS. In the event of a merger or Change in Control, an outstanding Option or SAR may be (i) assumed or substituted with an equivalent option or SAR of the successor corporation or a Parent or Subsidiary of the successor corporation, (ii) replaced with a cash incentive program of the successor corporation or a Parent or Subsidiary of the successor corporation, or (iii) terminated. Unless determined otherwise by the Administrator, in the event that the successor corporation does not assume, substitute or replace a Participant’s Option or SAR, the Participant shall, immediately prior to the merger or Change in Control, fully vest in and have the right to exercise such Option or SAR that is not assumed, substituted or replaced as to all of the Awarded Stock, including Shares as to which it would not otherwise be vested or exercisable. If an Option or SAR is not assumed, substituted or replaced in the event of a merger or Change in Control, the Administrator shall notify the Participant in writing or electronically that the Option or SAR shall be exercisable, to the extent vested, for a period of up to fifteen (15) days from the date of such notice, and the Option or SAR shall terminate upon the expiration of such period. For the purposes of this paragraph, the Option or SAR shall be considered assumed if, following the merger or Change in Control, the option or stock appreciation right confers the right to purchase or receive, for each Share of Awarded Stock subject to the Option or SAR immediately prior to the merger or Change in Control, the consideration (whether stock, cash, or other securities or property) received in the merger or Change in Control by holders of Common Stock for each Share held on the effective date of the transaction (and if holders were offered a choice of consideration, the type of consideration chosen by the holders of a majority of the outstanding Shares); provided, however, that if such consideration received in the merger or Change in Control is not solely common stock of the successor corporation or its Parent, the Administrator may, with the consent of the successor corporation, provide for the consideration to be received upon the exercise of the Option or SAR, for each Share of Awarded Stock subject to the Option or SAR, to be solely common stock of the successor corporation or its Parent equal in fair market value to the per share consideration received by holders of Common Stock in the merger or Change in Control. Notwithstanding anything herein to the contrary, an Award that vests, is earned or paid-out upon the satisfaction of one or more Performance Goals will not be considered assumed if the

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Company or its successor modifies any of such Performance Goals without the Participant’s consent; provided, however, a modification to such Performance Goals only to reflect the successor corporation’s post-merger or post-Change in Control corporate structure will not be deemed to invalidate an otherwise valid Award assumption.

With respect to Options and SARs granted to an Outside Director, the Participant shall, immediately prior to the merger or Change in Control, fully vest in and have the right to exercise such Options and SARs as to all of the Awarded Stock, including Shares as to which it would not otherwise be vested or exercisable. With respect to Options and SARs granted to an Employee, the Employee, upon a termination of the Employee by the Company or a Related Entity without Cause or a resignation of the Employee with Good Reason, shall receive one year of additional vesting for each full year of service performed for the Company or a Related Entity; provided, that such termination or resignation occurs within the twelve (12) month period following a Change in Control.

(ii) Restricted Stock, Performance Shares, Performance Units and Deferred Stock Units. In the event of a merger or Change in Control, an outstanding Restricted Stock, Performance Share, Performance Unit or Deferred Stock Unit award may be (i) assumed or substituted with an equivalent Restricted Stock, Performance Share, Performance Unit or Deferred Stock Unit award of the successor corporation or a Parent or Subsidiary of the successor corporation, (ii) replaced with a cash incentive program of the successor corporation or a Parent or Subsidiary of the successor corporation, or (iii) terminated. Unless determined otherwise by the Administrator, in the event that the successor corporation refuses to assume, substitute or replace a Participant’s Restricted Stock, Performance Share, Performance Unit or Deferred Stock Unit award, the Participant shall, immediately prior to the merger or Change in Control, fully vest in such Restricted Stock, Performance Share, Performance Unit or Deferred Stock Unit including as to Shares which would not otherwise be vested. For the purposes of this paragraph, a Restricted Stock, Performance Share, Performance Unit and Deferred Stock Unit award shall be considered assumed if, following the merger or Change in Control, the award confers the right to purchase or receive, for each Share subject to the Award immediately prior to the merger or Change in Control, the consideration (whether stock, cash, or other securities or property) received in the merger or Change in Control by holders of Common Stock for each Share held on the effective date of the transaction (and if holders were offered a choice of consideration, the type of consideration chosen by the holders of a majority of the outstanding Shares); provided, however, that if such consideration received in the merger or Change in Control is not solely common stock of the successor corporation or its Parent, the Administrator may, with the consent of the successor corporation, provide for the consideration to be received, for each Share and each unit/right to acquire a Share subject to the Award, to be solely common stock of the successor corporation or its Parent equal in fair market value to the per share consideration received by holders of Common Stock in the merger or Change in Control. Notwithstanding anything herein to the contrary, an Award that vests, is earned or paid-out upon the satisfaction of one or more Performance Goals will not be considered assumed if the Company or its successor modifies any of such Performance Goals without the Participant’s consent; provided, however, a modification to such Performance Goals only to reflect the successor corporation’s post-merger or post-Change in Control corporate structure will not be deemed to invalidate an otherwise valid Award assumption.

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With respect to Awards granted to an Outside Director, the Participant shall, immediately prior to the merger or Change in Control, fully vest in such Awards, including Shares as to which it would not otherwise be vested. With respect to Awards granted to an Employee, the Employee, upon a termination of the Employee by the Company or a Related Entity without Cause or a resignation of the Employee with Good Reason, shall receive one year of additional vesting for each full year of service performed for the Company or a Related Entity; provided, that such termination or resignation occurs within the twelve (12) month period following a Change in Control.

16. Date of Grant. The date of grant of an Award will be, for all purposes, the date on which the Administrator makes the determination granting such Award, or such other later date as is determined by the Administrator. Notice of the determination will be provided to each Participant within a reasonable time after the date of such grant.

17. Term of Plan. Subject to Section 22 of the Plan, the Plan will become effective upon its adoption by the Board. It will continue in effect for a term of ten (10) years unless terminated earlier under Section 18 of the Plan.

18. Amendment and Termination of the Plan.

(a) Amendment and Termination. The Board may at any time amend, alter, suspend or terminate the Plan.

(b) Stockholder Approval. The Company will obtain stockholder approval of any Plan amendment to the extent necessary and desirable to comply with Applicable Laws. Other than pursuant to Section 15, the Company also will obtain stockholder approval before implementing a program to reduce the exercise price of outstanding Options and/or SARs through a repricing or Award exchange.

(c) Effect of Amendment or Termination. No amendment, alteration, suspension or termination of the Plan will impair the rights of any Participant, unless mutually agreed otherwise between the Participant and the Administrator, which agreement must be in writing and signed by the Participant and the Company. Termination of the Plan will not affect the Administrator’s ability to exercise the powers granted to it hereunder with respect to Awards granted under the Plan prior to the date of such termination.

| 19. | Conditions Upon Issuance of Shares.

(a) Legal Compliance. Shares will not be issued pursuant to the exercise of an Award unless the exercise of such Award and the issuance and delivery of such Shares will comply with Applicable Laws and will be further subject to the approval of counsel for the Company with respect to such compliance.

(b) Investment Representations. As a condition to the exercise or receipt of an Award, the Company may require the person exercising or receiving such Award to represent and warrant at the time of any such exercise or receipt that the Shares are being purchased only for investment and without any present intention to sell or distribute such Shares if, in the opinion of counsel for the Company, such a representation is required.

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20. Severability. Notwithstanding any contrary provision of the Plan or an Award to the contrary, if any one or more of the provisions (or any part thereof) of this Plan or the Awards shall be held invalid, illegal or unenforceable in any respect, such provision shall be modified so as to make it valid, legal and enforceable, and the validity, legality and enforceability of the remaining provisions (or any part thereof) of the Plan or Award, as applicable, shall not in any way be affected or impaired thereby.

21. Inability to Obtain Authority. The inability of the Company to obtain authority from any regulatory body having jurisdiction, which authority is deemed by the Company’s counsel to be necessary to the lawful issuance and sale of any Shares hereunder, will relieve the Company of any liability in respect of the failure to issue or sell such Shares as to which such requisite authority will not have been obtained.

22. Stockholder Approval. The Plan will be subject to approval by the stockholders of the Company within twelve (12) months after the date the Plan is adopted. Such stockholder approval will be obtained in the manner and to the degree required under Applicable Laws.

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