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                                                                    EXHIBIT 10.4

                                  STENTOR, INC.

                           2005 EQUITY INCENTIVE PLAN

                            ADOPTED: JANUARY 19, 2005
                 APPROVED BY STOCKHOLDERS: _______________, 2005
                       TERMINATION DATE: JANUARY 18, 2015

1. GENERAL.

      (a) ELIGIBLE STOCK AWARD RECIPIENTS. The persons eligible to receive Stock
Awards are Employees, Directors and Consultants.

      (b) AVAILABLE STOCK AWARDS. The Plan provides for the grant of the
following Stock Awards: (i) Incentive Stock Options, (ii) Nonstatutory Stock
Options, (iii) Stock Purchase Awards, (iv) Stock Bonus Awards, (v) Stock
Appreciation Rights, (vi) Stock Unit Awards, and (vii) Other Stock Awards.

      (c) GENERAL PURPOSE. The Company, by means of the Plan, seeks to secure
and retain the services of the group of persons eligible to receive Stock Awards
as set forth in Section 1(a), to provide incentives for such persons to exert
maximum efforts for the success of the Company and any Affiliate and to provide
a means by which such eligible recipients may be given an opportunity to benefit
from increases in value of the Common Stock through the granting of Stock
Awards.

2. DEFINITIONS.

      As used in the Plan, the following definitions shall apply to the
capitalized terms indicated below:

      (a) "AFFILIATE" means (i) any corporation (other than the Company) in an
unbroken chain of corporations ending with the Company, provided each
corporation in the unbroken chain (other than the Company) owns, at the time of
the determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain, and (ii) any corporation (other than the Company) in an unbroken
chain of corporations beginning with the Company, provided each corporation
(other than the last corporation) in the unbroken chain owns, at the time of the
determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain. The Board shall have the authority to determine (i) the time or
times at which the ownership tests are applied, and (ii) whether "Affiliate"
includes entities other than corporations within the foregoing definition.

      (b) "BOARD" means the Board of Directors of the Company.

      (c) "CAPITALIZATION ADJUSTMENT" has the meaning ascribed to that term in
Section 11(a).

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      (d) "CAUSE" means, with respect to a Participant, the occurrence of any of
the following: (i) such Participant's commission of any felony or any crime
involving fraud, dishonesty or moral turpitude under the laws of the United
States or any state thereof; (ii) such Participant's attempted commission of, or
participation in, a fraud or act of dishonesty against the Company; (iii) such
Participant's intentional, material violation of any material contract or
agreement between the Participant and the Company or any statutory duty owed to
the Company; (iv) such Participant's unauthorized use or disclosure of the
Company's confidential information or trade secrets; or (v) such Participant's
gross misconduct. The determination that a termination is for Cause shall be
made by the Company in its sole discretion. Any determination by the Company
that the Continuous Service of a Participant was terminated by reason of
dismissal without Cause for the purposes of outstanding Stock Awards held by
such Participant shall have no effect upon any determination of the rights or
obligations of the Company or such Participant for any other purpose.

      (e) "CHANGE IN CONTROL" means the occurrence, in a single transaction or
in a series of related transactions, of any one or more of the following events:

            (i) any Exchange Act Person becomes the Owner, directly or
indirectly, of securities of the Company representing more than fifty percent
(50%) of the combined voting power of the Company's then outstanding securities
other than by virtue of a merger, consolidation or similar transaction.
Notwithstanding the foregoing, a Change in Control shall not be deemed to occur
(A) on account of the acquisition of securities of the Company by an investor,
any affiliate thereof or any other Exchange Act Person from the Company in a
transaction or series of related transactions the primary purpose of which is to
obtain financing for the Company through the issuance of equity securities or
(B) solely because the level of Ownership held by any Exchange Act Person (the
"SUBJECT PERSON") exceeds the designated percentage threshold of the outstanding
voting securities as a result of a repurchase or other acquisition of voting
securities by the Company reducing the number of shares outstanding, provided
that if a Change in Control would occur (but for the operation of this sentence)
as a result of the acquisition of voting securities by the Company, and after
such share acquisition, the Subject Person becomes the Owner of any additional
voting securities that, assuming the repurchase or other acquisition had not
occurred, increases the percentage of the then outstanding voting securities
Owned by the Subject Person over the designated percentage threshold, then a
Change in Control shall be deemed to occur;

            (ii) there is consummated a merger, consolidation or similar
transaction involving (directly or indirectly) the Company and, immediately
after the consummation of such merger, consolidation or similar transaction, the
stockholders of the Company immediately prior thereto do not Own, directly or
indirectly, either (A) outstanding voting securities representing more than
fifty percent (50%) of the combined outstanding voting power of the surviving
Entity in such merger, consolidation or similar transaction or (B) more than
fifty percent (50%) of the combined outstanding voting power of the parent of
the surviving Entity in such merger, consolidation or similar transaction, in
each case in substantially the same proportions as their Ownership of the
outstanding voting securities of the Company immediately prior to such
transaction;

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            (iii) the stockholders of the Company approve or the Board approves
a plan of complete dissolution or liquidation of the Company, or a complete
dissolution or liquidation of the Company shall otherwise occur;

            (iv) there is consummated a sale, lease, exclusive license or other
disposition of all or substantially all of the consolidated assets of the
Company and its Subsidiaries, other than a sale, lease, license or other
disposition of all or substantially all of the consolidated assets of the
Company and its Subsidiaries to an Entity, more than fifty percent (50%) of the
combined voting power of the voting securities of which are Owned by
stockholders of the Company in substantially the same proportions as their
Ownership of the outstanding voting securities of the Company immediately prior
to such sale, lease, license or other disposition; or

            (v) individuals who, on the date this Plan is adopted by the Board,
are members of the Board (the "INCUMBENT BOARD") cease for any reason to
constitute at least a majority of the members of the Board; provided, however,
that if the appointment or election (or nomination for election) of any new
Board member was approved or recommended by a majority vote of the members of
the Incumbent Board then still in office, such new member shall, for purposes of
this Plan, be considered as a member of the Incumbent Board.

      The term Change in Control shall not include a sale of assets, merger or
other transaction effected exclusively for the purpose of changing the domicile
of the Company.

      Notwithstanding the foregoing or any other provision of this Plan, the
definition of Change in Control (or any analogous term) in an individual written
agreement between the Company or any Affiliate and the Participant shall
supersede the foregoing definition with respect to Stock Awards subject to such
agreement; provided, however, that if no definition of Change in Control or any
analogous term is set forth in such an individual written agreement, the
foregoing definition shall apply.

      (f) "CODE" means the Internal Revenue Code of 1986, as amended.

      (g) "COMMITTEE" means a committee of one (1) or more members of the Board
to whom authority has been delegated by the Board in accordance with Section
3(c).

      (h) "COMMON STOCK" means the common stock of the Company.

      (i) "COMPANY" means Stentor, Inc., a Delaware corporation.

      (j) "CONSULTANT" means any person, including an advisor, who is (i)
engaged by the Company or an Affiliate to render consulting or advisory services
and is compensated for such services, or (ii) serving as a member of the Board
of Directors of an Affiliate and is compensated for such services. However,
service solely as a Director, or payment of a fee for such service, shall not
cause a Director to be considered a "Consultant" for purposes of the Plan.

      (k) "CONTINUOUS SERVICE" means that the Participant's service with the
Company or an Affiliate, whether as an Employee, Director or Consultant, is not
interrupted or terminated. A change in the capacity in which the Participant
renders service to the Company or an Affiliate as an Employee, Consultant or
Director or a change in the entity for which the Participant renders

                                       3.
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such service, provided that there is no interruption or termination of the
Participant's service with the Company or an Affiliate, shall not terminate a
Participant's Continuous Service. For example, a change in status from an
employee of the Company to a consultant to an Affiliate or to a Director shall
not constitute an interruption of Continuous Service. To the extent permitted by
law, the Board or the chief executive officer of the Company, in that party's
sole discretion, may determine whether Continuous Service shall be considered
interrupted in the case of any leave of absence approved by that party,
including sick leave, military leave or any other personal leave.
Notwithstanding the foregoing, a leave of absence shall be treated as Continuous
Service for purposes of vesting in a Stock Award only to such extent as may be
provided in the Company's leave of absence policy or in the written terms of the
Participant's leave of absence.

      (l) "CORPORATE TRANSACTION" means the occurrence, in a single transaction
or in a series of related transactions, of any one or more of the following
events:

            (i) a sale or other disposition of all or substantially all, as
determined by the Board in its sole discretion, of the consolidated assets of
the Company and its Subsidiaries;

            (ii) a sale or other disposition of at least ninety percent (90%) of
the outstanding securities of the Company;

            (iii) the consummation of a merger, consolidation or similar
transaction following which the Company is not the surviving corporation; or

            (iv) the consummation of a merger, consolidation or similar
transaction following which the Company is the surviving corporation but the
shares of Common Stock outstanding immediately preceding the merger,
consolidation or similar transaction are converted or exchanged by virtue of the
merger, consolidation or similar transaction into other property, whether in the
form of securities, cash or otherwise.

      (m) "COVERED EMPLOYEE" means the chief executive officer and the four (4)
other highest compensated officers of the Company for whom total compensation is
required to be reported to stockholders under the Exchange Act, as determined
for purposes of Section 162(m) of the Code.

      (n) "DIRECTOR" means a member of the Board.

      (o) "DISABILITY" means the permanent and total disability of a person
within the meaning of Section 22(e)(3) of the Code.

      (p) "EMPLOYEE" means any person employed by the Company or an Affiliate.
However, service solely as a Director, or payment of a fee for such services,
shall not cause a Director to be considered an "Employee" for purposes of the
Plan.

      (q) "ENTITY" means a corporation, partnership or other entity.

      (r) "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended.

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      (s) "EXCHANGE ACT PERSON" means any natural person, Entity or "group"
(within the meaning of Section 13(d) or 14(d) of the Exchange Act), except that
"Exchange Act Person" shall not include (i) the Company or any Subsidiary of the
Company, (ii) any employee benefit plan of the Company or any Subsidiary of the
Company or any trustee or other fiduciary holding securities under an employee
benefit plan of the Company or any Subsidiary of the Company, (iii) an
underwriter temporarily holding securities pursuant to an offering of such
securities, (iv) an Entity Owned, directly or indirectly, by the stockholders of
the Company in substantially the same proportions as their Ownership of stock of
the Company; or (v) any natural person, Entity or "group" (within the meaning of
Section 13(d) or 14(d) of the Exchange Act) that, as of the effective date of
the Plan as set forth in Section 14, is the Owner, directly or indirectly, of
securities of the Company representing more than fifty percent (50%) of the
combined voting power of the Company's then outstanding securities.

      (t) "FAIR MARKET VALUE" means, as of any date, the value of the Common
Stock determined as follows:

            (i) If the Common Stock is listed on any established stock exchange
or traded on the Nasdaq National Market or the Nasdaq SmallCap Market, the Fair
Market Value of a share of Common Stock shall be the closing sales price for
such stock (or the closing bid, if no sales were reported) as quoted on such
exchange or market (or the exchange or market with the greatest volume of
trading in the Common Stock) on the date in question, as reported in The Wall
Street Journal or such other source as the Board deems reliable. Unless
otherwise provided by the Board, if there is no closing sales price (or closing
bid if no sales were reported) for the Common Stock on the date in question,
then the Fair Market Value shall be the closing selling price (or closing bid if
no sales were reported) on the last preceding date for which such quotation
exists.

            (ii) In the absence of such markets for the Common Stock, the Fair
Market Value shall be determined by the Board in good faith.

      (u) "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.

      (v) "IPO DATE" means the date of the underwriting agreement between the
Company and the underwriter(s) managing the initial public offering of the
Common Stock, pursuant to which the Common Stock is priced for the initial
public offering.

      (w) "NON-EMPLOYEE DIRECTOR" means a Director who either (i) is not a
current employee or officer of the Company or an Affiliate, does not receive
compensation, either directly or indirectly, from the Company or an Affiliate
for services rendered as a consultant or in any capacity other than as a
Director (except for an amount as to which disclosure would not be required
under Item 404(a) of Regulation S-K promulgated pursuant to the Securities Act
("REGULATION S-K")), does not possess an interest in any other transaction for
which disclosure would be required under Item 404(a) of Regulation S-K, and is
not engaged in a business relationship for which disclosure would be required
pursuant to Item 404(b) of Regulation S-K; or (ii) is otherwise considered a
"non-employee director" for purposes of Rule 16b-3.

                                       5.
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      (x) "NONSTATUTORY STOCK OPTION" means an Option 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 an Incentive Stock Option or a Nonstatutory Stock
Option to purchase shares of Common Stock granted pursuant to the Plan.

      (aa) "OPTION AGREEMENT" means a written agreement between the Company and
an Optionholder evidencing the terms and conditions of an Option grant. Each
Option Agreement shall be subject to the terms and conditions of the Plan.

      (bb) "OPTIONHOLDER" means a person to whom an Option is granted pursuant
to the Plan or, if applicable, such other person who holds an outstanding
Option.

      (cc) "OTHER STOCK AWARD" means an award based in whole or in part by
reference to the Common Stock which is granted pursuant to the terms and
conditions of Section 7(e).

      (dd) "OTHER STOCK AWARD AGREEMENT" means a written agreement between the
Company and a holder of an Other Stock Award evidencing the terms and conditions
of an Other Stock Award grant. Each Other Stock Award Agreement shall be subject
to the terms and conditions of the Plan.

      (ee) "OUTSIDE DIRECTOR" means a Director who either (i) is not a current
employee of the Company or an "affiliated corporation" (within the meaning of
Treasury Regulations promulgated under Section 162(m) of the Code), is not a
former employee of the Company or an "affiliated corporation" who receives
compensation for prior services (other than benefits under a tax-qualified
retirement plan) during the taxable year, has not been an officer of the Company
or an "affiliated corporation," and does not receive remuneration from the
Company or an "affiliated corporation," either directly or indirectly, in any
capacity other than as a Director, or (ii) is otherwise considered an "outside
director" for purposes of Section 162(m) of the Code.

      (ff) "OWN," "OWNED," "OWNER," "OWNERSHIP" A person or Entity shall be
deemed to "Own," to have "Owned," to be the "Owner" of, or to have acquired
"Ownership" of securities if such person or Entity, directly or indirectly,
through any contract, arrangement, understanding, relationship or otherwise, has
or shares voting power, which includes the power to vote or to direct the
voting, with respect to such securities.

      (gg) "PARTICIPANT" means a person to whom a Stock Award is granted
pursuant to the Plan or, if applicable, such other person who holds an
outstanding Stock Award.

      (hh) "PERFORMANCE CRITERIA" means the one or more criteria that the Board
shall select for purposes of establishing the Performance Goals for a
Performance Period. The Performance Criteria that shall be used to establish
such Performance Goals may be based on any one of, or combination of, the
following: (i) earnings per share; (ii) earnings before interest, taxes and
depreciation; (iii) earnings before interest, taxes, depreciation and
amortization (EBITDA); (iv) net earnings; (v) total shareholder return; (vi)
return on equity; (vii) return on assets, investment,

                                       6.
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or capital employed; (viii) operating margin; (ix) gross margin; (x) operating
income; (xi) net income (before or after taxes); (xii) net operating income;
(xiii) net operating income after tax; (xiv) pre- and after-tax income; (xv)
pre-tax profit; (xvi) operating cash flow; (xvii) sales or revenue targets;
(xviii) increases in revenue or product revenue; (xix) expenses and cost
reduction goals; (xx) improvement in or attainment of expense levels; (xxi)
improvement in or attainment of working capital levels; (xxii) economic value
added (or an equivalent metric); (xxiii) market share; (xxiv) cash flow; (xxv)
cash flow per share; (xxvi) share price performance; (xxvii) debt reduction;
(xxviii) implementation or completion of projects or processes; (xxix) customer
satisfaction; (xxx) total stockholder return; (xxxi) stockholders' equity; and
(xxxii) other measures of performance selected by the Board. Partial achievement
of the specified criteria may result in the payment or vesting corresponding to
the degree of achievement as specified in the Stock Award Agreement. The Board
shall, in its sole discretion, define the manner of calculating the Performance
Criteria it selects to use for such Performance Period.

      (ii) "PERFORMANCE GOALS" means, for a Performance Period, the one or more
goals established by the Board for the Performance Period based upon the
Performance Criteria. The Board is authorized at any time in its sole
discretion, to adjust or modify the calculation of a Performance Goal for such
Performance Period in order to prevent the dilution or enlargement of the rights
of Participants, (a) in the event of, or in anticipation of, any unusual or
extraordinary corporate item, transaction, event or development; (b) in
recognition of, or in anticipation of, any other unusual or nonrecurring events
affecting the Company, or the financial statements of the Company, or in
response to, or in anticipation of, changes in applicable laws, regulations,
accounting principles, or business conditions; or (c) in view of the Board's
assessment of the business strategy of the Company, performance of comparable
organizations, economic and business conditions, and any other circumstances
deemed relevant. Specifically, the Board is authorized to make adjustment in the
method of calculating attainment of Performance Goals and objectives for a
Performance Period as follows: (i) to exclude the dilutive effects of
acquisitions or joint ventures; (ii) to assume that any business divested by the
Company achieved performance objectives at targeted levels during the balance of
a Performance Period following such divestiture; and (iii) to exclude the effect
of any change in the outstanding shares of common stock of the Company by reason
of any stock dividend or split, stock repurchase, reorganization,
recapitalization, merger, consolidation, spin-off, combination or exchange of
shares or other similar corporate change, or any distributions to common
shareholders other than regular cash dividends. In addition, with respect to
Performance Goals established for Participants who are not Covered Employees,
and who will not be Covered Employees at the time the compensation will be paid,
the Board is authorized to make adjustment in the method of calculating
attainment of Performance Goals and objectives for a Performance Period as
follows: (i) to exclude restructuring and/or other nonrecurring charges; (ii) to
exclude exchange rate effects, as applicable, for non-U.S. dollar denominated
net sales and operating earnings; (iii) to exclude the effects of changes to
generally accepted accounting standards required by the Financial Accounting
Standards Board; (iv) to exclude the effects to any statutory adjustments to
corporate tax rates; (v) to exclude the impact of any "extraordinary items" as
determined under generally accepted accounting principles; and (vi) to exclude
any other unusual, non-recurring gain or loss or other extraordinary item.

      (jj) "PERFORMANCE PERIOD" means the one or more periods of time, which may
be of varying and overlapping durations, as the Board may select, over which the
attainment of one or

                                       7.
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more Performance Goals will be measured for the purpose of determining a
Participant's right to and the payment of a Stock Award.

      (kk) "PLAN" means this Stentor, Inc. 2005 Equity Incentive Plan.

      (ll) "RULE 16b-3" means Rule 16b-3 promulgated under the Exchange Act or
any successor to Rule 16b-3, as in effect from time to time.

      (mm) "SECURITIES ACT" means the Securities Act of 1933, as amended.

      (nn) "STOCK APPRECIATION RIGHT" means a right to receive the appreciation
on Common Stock that is granted pursuant to the terms and conditions of Section
7(d).

      (oo) "STOCK APPRECIATION RIGHT AGREEMENT" means a written agreement
between the Company and a holder of a Stock Appreciation Right evidencing the
terms and conditions of a Stock Appreciation Right grant. Each Stock
Appreciation Right Agreement shall be subject to the terms and conditions of the
Plan.

      (pp) "STOCK AWARD" means any right granted under the Plan, including an
Option, a Stock Purchase Award, Stock Bonus Award, a Stock Appreciation Right, a
Stock Unit Award, or any Other Stock Award.

      (qq) "STOCK AWARD AGREEMENT" means a written agreement between the Company
and a Participant evidencing the terms and conditions of a Stock Award grant.
Each Stock Award Agreement shall be subject to the terms and conditions of the
Plan.

      (rr) "STOCK BONUS AWARD" means an award of shares of Common Stock which is
granted pursuant to the terms and conditions of Section 7(b).

      (ss) "STOCK BONUS AWARD AGREEMENT" means a written agreement between the
Company and a holder of a Stock Bonus Award evidencing the terms and conditions
of a Stock Bonus Award grant. Each Stock Bonus Award Agreement shall be subject
to the terms and conditions of the Plan.

      (tt) "STOCK PURCHASE AWARD" means an award of shares of Common Stock which
is granted pursuant to the terms and conditions of Section 7(a).

      (uu) "STOCK PURCHASE AWARD AGREEMENT" means a written agreement between
the Company and a holder of a Stock Purchase Award evidencing the terms and
conditions of a Stock Purchase Award grant. Each Stock Purchase Award Agreement
shall be subject to the terms and conditions of the Plan.

      (vv) "STOCK UNIT AWARD" means a right to receive shares of Common Stock
which is granted pursuant to the terms and conditions of Section 7(c).

      (ww) "STOCK UNIT AWARD AGREEMENT" means a written agreement between the
Company and a holder of a Stock Unit Award evidencing the terms and conditions
of a Stock

                                       8.
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Unit Award grant. Each Stock Unit Award Agreement shall be subject to the terms
and conditions of the Plan.

      (xx) "SUBSIDIARY" means, with respect to the Company, (i) any corporation
of which more than fifty percent (50%) of the outstanding capital stock having
ordinary voting power to elect a majority of the board of directors of such
corporation (irrespective of whether, at the time, stock of any other class or
classes of such corporation shall have or might have voting power by reason of
the happening of any contingency) is at the time, directly or indirectly, Owned
by the Company, and (ii) any partnership in which the Company has a direct or
indirect interest (whether in the form of voting or participation in profits or
capital contribution) of more than fifty percent (50%).

      (yy) "TEN PERCENT STOCKHOLDER" means a person who Owns (or is deemed to
Own pursuant to Section 424(d) of the Code) stock possessing more than ten
percent (10%) of the total combined voting power of all classes of stock of the
Company or any Affiliate.

3. ADMINISTRATION.

      (a) ADMINISTRATION BY BOARD. The Board shall administer the Plan unless
and until the Board delegates administration of the Plan to a Committee, as
provided in Section 3(c).

      (b) POWERS OF BOARD. The Board shall have the power, subject to, and
within the limitations of, the express provisions of the Plan:

            (i) To determine from time to time (1) which of the persons eligible
under the Plan shall be granted Stock Awards; (2) when and how each Stock Award
shall be granted; (3) what type or combination of types of Stock Award shall be
granted; (4) the provisions of each Stock Award granted (which need not be
identical), including the time or times when a person shall be permitted to
receive Common Stock pursuant to a Stock Award; and (5) the number of shares of
Common Stock with respect to which a Stock Award shall be granted to each such
person.

            (ii) To construe and interpret the Plan and Stock Awards granted
under it, and to establish, amend and revoke rules and regulations for its
administration. The Board, in the exercise of this power, may correct any
defect, omission or inconsistency in the Plan or in any Stock Award Agreement,
in a manner and to the extent it shall deem necessary or expedient to make the
Plan fully effective.

            (iii) To effect, at any time and from time to time, with the consent
of any adversely affected Optionholder, (1) the reduction of the exercise price
of any outstanding Option under the Plan; (2) the cancellation of any
outstanding Option under the Plan and the grant in substitution therefor of (a)
a new Option under the Plan or another equity plan of the Company covering the
same or a different number of shares of Common Stock, (b) a Stock Purchase
Award, (c) a Stock Bonus Award, (d) a Stock Appreciation Right, (e) a Stock Unit
Award, (f) an Other Stock Award, (g) cash, and/or (h) other valuable
consideration (as determined by the Board, in its sole discretion); or (3) any
other action that is treated as a repricing under generally accepted accounting
principles.

                                       9.
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            (iv) To amend the Plan or a Stock Award as provided in Section 12.

            (v) To terminate or suspend the Plan as provided in Section 13.

            (vi) Generally, to exercise such powers and to perform such acts as
the Board deems necessary or expedient to promote the best interests of the
Company and that are not in conflict with the provisions of the Plan.

            (vii) To adopt such procedures and sub-plans as are necessary or
appropriate to permit participation in the Plan by Employees who are foreign
nationals or employed outside the United States.

      (c) DELEGATION TO COMMITTEE.

            (i) GENERAL. The Board may delegate some or all of the
administration of the Plan to a Committee or Committees. 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 that
have been delegated to the Committee, 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. The Board may retain the authority to concurrently administer
the Plan with the Committee and may, at any time, revest in the Board some or
all of the powers previously delegated.

           (ii) SECTION 162(m) AND RULE 16b-3 COMPLIANCE. In the sole discretion
of the Board, the Committee may consist solely of two or more Outside Directors,
in accordance with Section 162(m) of the Code, and/or solely of two or more
Non-Employee Directors, in accordance with Rule 16b-3. In addition, the Board or
the Committee, in its sole discretion, may (1) delegate to a committee of one or
more members of the Board who need not be Outside Directors the authority to
grant Stock Awards to eligible persons who are either (a) not then Covered
Employees and are not expected to be Covered Employees at the time of
recognition of income resulting from such Stock Award, or (b) not persons with
respect to whom the Company wishes to comply with Section 162(m) of the Code,
and/or (2) delegate to a committee of one or more members of the Board who need
not be Non-Employee Directors the authority to grant Stock Awards to eligible
persons who are not then subject to Section 16 of the Exchange Act.

      (d) DELEGATION TO AN OFFICER. The Board may delegate to one or more
Officers of the Company the authority to do one or both of the following (i)
designate Officers and Employees of the Company or any of its Subsidiaries to be
recipients of Stock Awards and the terms thereof, and (ii) determine the number
of shares of Common Stock to be subject to such Stock Awards granted to such
Officers and Employees of the Company; provided, however, that the Board
resolutions regarding such delegation shall specify the total number of shares
of Common Stock that may be subject to the Stock Awards granted by such Officer
and that such Officer may not grant a Stock Award to himself or herself.
Notwithstanding anything to the contrary in this Section 3(d), the Board may not
delegate to an Officer authority to determine the Fair Market Value of the
Common Stock pursuant to Section 2(t)(ii) above.

                                      10.
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      (e) EFFECT OF BOARD'S DECISION. All determinations, interpretations and
constructions made by the Board in good faith shall not be subject to review by
any person and shall be final, binding and conclusive on all persons.

4. SHARES SUBJECT TO THE PLAN.

(a) SHARE RESERVE. Subject to the provisions of Section 11(a) relating to
Capitalization Adjustments, the number of shares of Common Stock that may be
issued pursuant to Stock Awards shall not exceed, in the aggregate, two million
six hundred thousand (2,600,000) shares of Common Stock; provided,  however,
that such share reserve shall be increased from time to time by the  number of
shares of Common Stock that (i) are issuable pursuant to stock awards
outstanding under the Company's 1999 Incentive Stock Plan and 2001 Incentive
Stock Plan (collectively, the "PRIOR PLANS") as of the effective date of the
Plan (as set forth in Section 14), and (ii) but for the termination of the
Prior  Plans, would otherwise have reverted to the share reserve of the Prior
Plans. In  addition, the number of shares of Common Stock available for
issuance under the  Plan shall automatically increase on January 1st of each
year commencing in 2006  and ending on (and including) January 1, 2015, in an
amount equal to the lesser  of (i) four percent (4%) of the total number of
shares of Common Stock  outstanding on December 31st of the preceding calendar
year, or (ii) one million  six hundred thousand (1,600,000) shares of Common
Stock. Notwithstanding the  foregoing, the Board may act prior to the first day
of any calendar year, to  provide that there shall be no increase in the share
reserve for such calendar  year or that the increase in the share reserve for
such calendar year shall be a  lesser number of shares of Common Stock than
would otherwise occur pursuant to  the preceding sentence.

      (b) REVERSION OF SHARES TO THE SHARE RESERVE. If any Stock Award shall for
any reason expire or otherwise terminate, in whole or in part, without having
been exercised in full, if any shares of Common Stock issued to a Participant
pursuant to a Stock Award are forfeited to or repurchased by the Company,
including, but not limited to, any repurchase or forfeiture caused by the
failure to meet a contingency or condition required for the vesting of such
shares, or if any shares of Common Stock are cancelled in accordance with the
cancellation and regrant provisions of Section 3(b)(iii), then the shares of
Common Stock not issued under such Stock Award, or forfeited to or repurchased
by the Company, shall revert to and again become available for issuance under
the Plan. If any shares subject to a Stock Award are not delivered to a
Participant because such shares are withheld for the payment of taxes or the
Stock Award is exercised through a reduction of shares subject to the Stock
Award (i.e., "net exercised"), the number of shares that are not delivered to
the Participant shall remain available for issuance under the Plan. If the
exercise price of any Stock Award is satisfied by tendering shares of Common
Stock held by the Participant (either by actual delivery or attestation), then
the number of shares so tendered shall remain available for issuance under the
Plan. Notwithstanding anything to the contrary in this Section 4(b), subject to
the provisions of Section 11(a) relating to Capitalization Adjustments the
aggregate maximum number of shares of Common Stock that may be issued pursuant
to the exercise of Incentive Stock Options shall be fifteen million (15,000,000)
shares of Common Stock plus the amount of any increase in the number of shares
that may be available for issuance pursuant to Stock Awards pursuant to Section
4(a).

                                      11.
<PAGE>

      (c) SOURCE OF SHARES. The stock issuable under the Plan shall be shares of
authorized but unissued or reacquired Common Stock, including shares repurchased
by the Company on the open market.

5. ELIGIBILITY.

      (a) ELIGIBILITY FOR SPECIFIC STOCK AWARDS. Incentive Stock Options may be
granted only to Employees. Stock Awards other than Incentive Stock Options may
be granted to Employees, Directors and Consultants.

      (b) TEN PERCENT STOCKHOLDERS. A Ten Percent Stockholder shall not be
granted an Incentive Stock Option unless the exercise price of such Option is at
least one hundred ten percent (110%) of the Fair Market Value of the Common
Stock on the date of grant and the Option is not exercisable after the
expiration of five (5) years from the date of grant.

      (c) SECTION 162(m) LIMITATION ON ANNUAL GRANTS. Subject to the provisions
of Section 11(a) relating to Capitalization Adjustments, at such time as the
Company may be subject to the applicable provisions of Section 162(m) of the
Code, no Employee shall be eligible to be granted Stock Awards whose value is
determined by reference to an increase over an exercise or strike price of at
least one hundred percent (100%) of the Fair Market Value of the Common Stock on
the date the Stock Award is granted covering more than one million five hundred
thousand (1,500,000) shares of Common Stock during any calendar year.

      (d) CONSULTANTS. A Consultant shall not be eligible for the grant of a
Stock Award if, at the time of grant, a Form S-8 Registration Statement under
the Securities Act ("FORM S-8") is not available to register either the offer or
the sale of the Company's securities to such Consultant because of the nature of
the services that the Consultant is providing to the Company, because the
Consultant is not a natural person, or because of any other rule governing the
use of Form S-8.

6. OPTION PROVISIONS.

      Each Option shall be in such form and shall contain such terms and
conditions as the Board shall deem appropriate. All Options shall be separately
designated Incentive Stock Options or Nonstatutory Stock Options at the time of
grant, and, if certificates are issued, a separate certificate or certificates
shall be issued for shares of Common Stock purchased on exercise of each type of
Option. The provisions of separate Options need not be identical; provided,
however, that each Option Agreement shall include (through incorporation of
provisions hereof by reference in the Option or otherwise) the substance of each
of the following provisions:

      (a) TERM. The Board shall determine the term of an Option; provided,
however, that subject to the provisions of Section 5(b) regarding Ten Percent
Stockholders, no Incentive Stock Option shall be exercisable after the
expiration of ten (10) years from the date of grant.

      (b) EXERCISE PRICE OF AN INCENTIVE STOCK OPTION. Subject to the provisions
of Section 5(b) regarding Ten Percent Stockholders, the exercise price of each
Incentive Stock Option shall be not less than one hundred percent (100%) of the
Fair Market Value of the

                                      12.
<PAGE>

Common Stock subject to the Option on the date the Option is granted.
Notwithstanding the foregoing, an Incentive Stock Option may be granted with an
exercise price lower than that set forth in the preceding sentence if such
Option is granted pursuant to an assumption or substitution for another option
in a manner consistent with the provisions of Section 424(a) of the Code.

      (c) EXERCISE PRICE OF A NONSTATUTORY STOCK OPTION. The exercise price of
each Nonstatutory Stock Option shall be not less than eighty-five percent (85%)
of the Fair Market Value of the Common Stock subject to the Option on the date
the Option is granted. Notwithstanding the foregoing, a Nonstatutory Stock
Option may be granted with an exercise price lower than that set forth in the
preceding sentence if such Option is granted pursuant to an assumption or
substitution for another option in a manner consistent with the provisions of
Section 424(a) of the Code.

      (d) CONSIDERATION. The purchase price of Common Stock acquired pursuant to
the exercise of an Option shall be paid, to the extent permitted by applicable
law and as determined by the Board in its sole discretion, by any combination of
the methods of payment set forth below. The Board shall have the authority to
grant Options that do not permit all of the following methods of payment (or
otherwise restrict the ability to use certain methods) and to grant Options that
require the consent of the Company to utilize a particular method of payment.
The methods of payment permitted by this Section 6(d) are:

            (i) by cash or check;

            (ii) pursuant to a program developed under Regulation T as
promulgated by the Federal Reserve Board that, prior to the issuance of Common
Stock, results in either the receipt of cash (or check) by the Company or the
receipt of irrevocable instructions to pay the aggregate exercise price to the
Company from the sales proceeds;

            (iii) by delivery to the Company (either by actual delivery or
attestation) of shares of Common Stock;

            (iv) by a "net exercise" arrangement pursuant to which the Company
will reduce the number of shares of Common Stock issued upon exercise by the
largest whole number of shares with a Fair Market Value that does not exceed the
aggregate exercise price; provided, however, the Company shall accept a cash or
other payment from the Participant to the extent of any remaining balance of the
aggregate exercise price not satisfied by such holding back of whole shares;
provided, however, shares of Common Stock will no longer be outstanding under an
Option and will not be exercisable thereafter to the extent that (i) shares are
used to pay the exercise price pursuant to the "net exercise," (ii) shares are
delivered to the Participant as a result of such exercise, and (iii) shares are
withheld to satisfy tax withholding obligations; or

            (v) in any other form of legal consideration that may be acceptable
to the Board.

      (e) TRANSFERABILITY OF OPTIONS. The Board may, in its sole discretion,
impose such limitations on the transferability of Options as the Board shall
determine. In the absence of such

                                      13.
<PAGE>

a determination by the Board to the contrary, the following restrictions on the
transferability of Options shall apply:

            (i) RESTRICTIONS ON TRANSFER. An Option shall not be transferable
except by will or by the laws of descent and distribution and shall be
exercisable during the lifetime of the Optionholder only by the Optionholder.

            (ii) DOMESTIC RELATIONS ORDERS. Notwithstanding the foregoing, an
Option may be transferred pursuant to a domestic relations order.

            (iii) BENEFICIARY DESIGNATION. Notwithstanding the foregoing, the
Optionholder may, by delivering written notice to the Company, in a form
provided by or otherwise satisfactory to the Company, designate a third party
who, in the event of the death of the Optionholder, shall thereafter be entitled
to exercise the Option.

      (f) VESTING GENERALLY. The total number of shares of Common Stock subject
to an Option may vest and therefore become exercisable in periodic installments
that may or may not be equal. The Option may be subject to such other terms and
conditions on the time or times when it may or may not be exercised (which may
be based on performance or other criteria) as the Board may deem appropriate.
The vesting provisions of individual Options may vary. The provisions of this
Section 6(f) are subject to any Option provisions governing the minimum number
of shares of Common Stock as to which an Option may be exercised.

      (g) TERMINATION OF CONTINUOUS SERVICE. In the event that an Optionholder's
Continuous Service terminates (other than upon the Optionholder's death or
Disability), the Optionholder may exercise his or her Option (to the extent that
the Optionholder was entitled to exercise such Option as of the date of
termination of Continuous Service) but only within such period of time ending on
the earlier of (i) the date three (3) months following the termination of the
Optionholder's Continuous Service (or such longer or shorter period specified in
the Option Agreement), or (ii) the expiration of the term of the Option as set
forth in the Option Agreement. If, after termination of Continuous Service, the
Optionholder does not exercise his or her Option within the time specified
herein or in the Option Agreement (as applicable), the Option shall terminate.

      (h) EXTENSION OF TERMINATION DATE. An Optionholder's Option Agreement may
provide that if the exercise of the Option following the termination of the
Optionholder's Continuous Service (other than upon the Optionholder's death or
Disability or upon a Change in Control) would be prohibited at any time solely
because the issuance of shares of Common Stock would violate the registration
requirements under the Securities Act, then the Option shall terminate on the
earlier of (i) the expiration of a period of three (3) months after the
termination of the Optionholder's Continuous Service during which the exercise
of the Option would not be in violation of such registration requirements, or
(ii) the expiration of the term of the Option as set forth in the Option
Agreement.

      (i) DISABILITY OF OPTIONHOLDER. In the event that an Optionholder's
Continuous Service terminates as a result of the Optionholder's Disability, the
Optionholder may exercise his or her Option (to the extent that the Optionholder
was entitled to exercise such Option as of the

                                      14.
<PAGE>

date of termination of Continuous Service), but only within such period of time
ending on the earlier of (i) the date twelve (12) months following such
termination of Continuous Service (or such longer or shorter period specified in
the Option Agreement), or (ii) the expiration of the term of the Option as set
forth in the Option Agreement. If, after termination of Continuous Service, the
Optionholder does not exercise his or her Option within the time specified
herein or in the Option Agreement (as applicable), the Option shall terminate.

      (j) DEATH OF OPTIONHOLDER. In the event that (i) an Optionholder's
Continuous Service terminates as a result of the Optionholder's death, or (ii)
the Optionholder dies within the period (if any) specified in the Option
Agreement after the termination of the Optionholder's Continuous Service for a
reason other than death, then the Option may be exercised (to the extent the
Optionholder was entitled to exercise such Option as of the date of death) by
the Optionholder's estate, by a person who acquired the right to exercise the
Option by bequest or inheritance or by a person designated to exercise the
option upon the Optionholder's death, but only within the period ending on the
earlier of (i) the date eighteen (18) months following the date of death (or
such longer or shorter period specified in the Option Agreement), or (ii) the
expiration of the term of such Option as set forth in the Option Agreement. If,
after the Optionholder's death, the Option is not exercised within the time
specified herein or in the Option Agreement (as applicable), the Option shall
terminate.

      (k) TERMINATION ON OR AFTER A CHANGE IN CONTROL. In the event that an
Optionholder's Continuous Service terminates as of, or within twelve (12) months
following a Change in Control, the Optionholder may exercise his or her Option
(to the extent that the Optionholder was entitled to exercise such Option as of
the date of termination of Continuous Service) within such period of time ending
on the earlier of (i) the date twelve (12) months following the effective date
of the Change in Control (or such longer or shorter period specified in the
Option Agreement), or (ii) the expiration of the term of the Option as set forth
in the Option Agreement. If, after termination of Continuous Service, the
Optionholder does not exercise his or her Option within the time specified
herein or in the Option Agreement (as applicable), the Option shall terminate.

      (l) EARLY EXERCISE. The Option may include a provision whereby the
Optionholder may elect at any time before the Optionholder's Continuous Service
terminates to exercise the Option as to any part or all of the shares of Common
Stock subject to the Option prior to the full vesting of the Option. Any
unvested shares of Common Stock so purchased may be subject to a repurchase
option in favor of the Company or to any other restriction the Board determines
to be appropriate. The Company shall not be required to exercise its repurchase
option until at least six (6) months (or such longer or shorter period of time
necessary to avoid a charge to earnings for financial accounting purposes) have
elapsed following exercise of the Option unless the Board otherwise specifically
provides in the Option.

7. PROVISIONS OF STOCK AWARDS OTHER THAN OPTIONS.

      (a) STOCK PURCHASE AWARDS. Each Stock Purchase Award Agreement shall be in
such form and shall contain such terms and conditions as the Board shall deem
appropriate. At the Board's election, shares of Common Stock may be (i) held in
book entry form subject to the Company's instructions until any restrictions
relating to the Stock Purchase Award lapse; or (ii)

                                      15.
<PAGE>

evidenced by a certificate, which certificate shall be held in such form and
manner as determined by the Board. The terms and conditions of Stock Purchase
Award Agreements may change from time to time, and the terms and conditions of
separate Stock Purchase Award Agreements need not be identical, provided,
however, that each Stock Purchase Award Agreement shall include (through
incorporation of the provisions hereof by reference in the agreement or
otherwise) the substance of each of the following provisions:

            (i) PURCHASE PRICE. At the time of the grant of a Stock Purchase
Award, the Board will determine the price to be paid by the Participant for each
share subject to the Stock Purchase Award. To the extent required by applicable
law, the price to be paid by the Participant for each share of the Stock
Purchase Award will not be less than the par value of a share of Common Stock.

            (ii) CONSIDERATION. At the time of the grant of a Stock Purchase
Award, the Board will determine the consideration permissible for the payment of
the purchase price of the Stock Purchase Award. The purchase price of Common
Stock acquired pursuant to the Stock Purchase Award shall be paid either: (i) in
cash or by check at the time of purchase, (ii) at the discretion of the Board,
according to a deferred payment or other similar arrangement with the
Participant, (iii) by past services rendered to the Company, or (iv) in any
other form of legal consideration that may be acceptable to the Board in its
sole discretion and permissible under applicable law.

            (iii) VESTING. Shares of Common Stock acquired under a Stock
Purchase Award may be subject to a share repurchase right or option in favor of
the Company in accordance with a vesting schedule to be determined by the Board.

            (iv) TERMINATION OF PARTICIPANT'S CONTINUOUS SERVICE. In the event
that a Participant's Continuous Service terminates, the Company shall have the
right, but not the obligation, to repurchase or otherwise reacquire, any or all
of the shares of Common Stock held by the Participant that have not vested as of
the date of termination under the terms of the Stock Purchase Award Agreement.
At the Board's election, the price paid for all shares of Common Stock so
repurchased or reacquired by the Company may be at the lesser of: (i) the Fair
Market Value on the relevant date, or (ii) the Participant's original cost for
such shares. The Company shall not be required to exercise its repurchase or
reacquisition option until at least six (6) months (or such longer or shorter
period of time necessary to avoid a charge to earnings for financial accounting
purposes) have elapsed following the Participant's purchase of the shares of
stock acquired pursuant to the Stock Purchase Award unless otherwise determined
by the Board or provided in the Stock Purchase Award Agreement.

            (v) TRANSFERABILITY. Rights to purchase or receive shares of Common
Stock granted under a Stock Purchase Award shall be transferable by the
Participant only upon such terms and conditions as are set forth in the Stock
Purchase Award Agreement, as the Board shall determine in its sole discretion,
and so long as Common Stock awarded under the Stock Purchase Award remains
subject to the terms of the Stock Purchase Award Agreement.

      (b) STOCK BONUS AWARDS. Each Stock Bonus Award Agreement shall be in such
form and shall contain such terms and conditions as the Board shall deem
appropriate. At the

                                      16.
<PAGE>

Board's election, shares of Common Stock may be (i) held in book entry form
subject to the Company's instructions until any restrictions relating to the
Stock Bonus Award lapse; or (ii) evidenced by a certificate, which certificate
shall be held in such form and manner as determined by the Board. The terms and
conditions of Stock Bonus Award Agreements may change from time to time, and the
terms and conditions of separate Stock Bonus Award Agreements need not be
identical, provided, however, that each Stock Bonus Award Agreement shall
include (through incorporation of provisions hereof by reference in the
agreement or otherwise) the substance of each of the following provisions:

            (i) CONSIDERATION. A Stock Bonus Award may be awarded in
consideration for (i) past services actually rendered to the Company or an
Affiliate, or (ii) any other form of legal consideration that may be acceptable
to the Board in its sole discretion and permissible under applicable law.

            (ii) VESTING. Shares of Common Stock awarded under the Stock Bonus
Award Agreement may be subject to forfeiture to the Company in accordance with a
vesting schedule to be determined by the Board.

            (iii) TERMINATION OF PARTICIPANT'S CONTINUOUS SERVICE. In the event
a Participant's Continuous Service terminates, the Company may receive via a
forfeiture condition, any or all of the shares of Common Stock held by the
Participant which have not vested as of the date of termination of Continuous
Service under the terms of the Stock Bonus Award Agreement.

            (iv) TRANSFERABILITY. Rights to acquire shares of Common Stock under
the Stock Bonus Award Agreement shall be transferable by the Participant only
upon such terms and conditions as are set forth in the Stock Bonus Award
Agreement, as the Board shall determine in its sole discretion, so long as
Common Stock awarded under the Stock Bonus Award Agreement remains subject to
the terms of the Stock Bonus Award Agreement.

      (c) STOCK UNIT AWARDS. Each Stock Unit Award Agreement shall be in such
form and shall contain such terms and conditions as the Board shall deem
appropriate. The terms and conditions of Stock Unit Award Agreements may change
from time to time, and the terms and conditions of separate Stock Unit Award
Agreements need not be identical, provided, however, that each Stock Unit Award
Agreement shall include (through incorporation of the provisions hereof by
reference in the agreement or otherwise) the substance of each of the following
provisions:

            (i) CONSIDERATION. At the time of grant of a Stock Unit Award, the
Board will determine the consideration, if any, to be paid by the Participant
upon delivery of each share of Common Stock subject to the Stock Unit Award. The
consideration to be paid (if any) by the Participant for each share of Common
Stock subject to a Stock Unit Award may be paid in any form of legal
consideration that may be acceptable to the Board in its sole discretion and
permissible under applicable law.

                                      17.
<PAGE>

            (ii) VESTING. At the time of the grant of a Stock Unit Award, the
Board may impose such restrictions or conditions to the vesting of the Stock
Unit Award as it, in its sole discretion, deems appropriate.

            (iii) PAYMENT. A Stock Unit Award may be settled by the delivery of
shares of Common Stock, their cash equivalent, any combination thereof or in any
other form of consideration, as determined by the Board and contained in the
Stock Unit Award Agreement.

            (iv) ADDITIONAL RESTRICTIONS. At the time of the grant of a Stock
Unit Award, the Board, as it deems appropriate, may impose such restrictions or
conditions that delay the delivery of the shares of Common Stock (or their cash
equivalent) subject to a Stock Unit Award after the vesting of such Stock Unit
Award.

            (v) DIVIDEND EQUIVALENTS. Dividend equivalents may be credited in
respect of shares of Common Stock covered by a Stock Unit Award, as determined
by the Board and contained in the Stock Unit Award Agreement. At the sole
discretion of the Board, such dividend equivalents may be converted into
additional shares of Common Stock covered by the Stock Unit Award in such manner
as determined by the Board. Any additional shares covered by the Stock Unit
Award credited by reason of such dividend equivalents will be subject to all the
terms and conditions of the underlying Stock Unit Award Agreement to which they
relate.

            (vi) TERMINATION OF PARTICIPANT'S CONTINUOUS SERVICE. Except as
otherwise provided in the applicable Stock Unit Award Agreement, such portion of
the Stock Unit Award that has not vested will be forfeited upon the
Participant's termination of Continuous Service.

      (d) STOCK APPRECIATION RIGHTS. Each Stock Appreciation Right Agreement
shall be in such form and shall contain such terms and conditions as the Board
shall deem appropriate. The terms and conditions of Stock Appreciation Right
Agreements may change from time to time, and the terms and conditions of
separate Stock Appreciation Right Agreements need not be identical; provided,
however, that each Stock Appreciation Right Agreement shall include (through
incorporation of the provisions hereof by reference in the agreement or
otherwise) the substance of each of the following provisions:

            (i) STRIKE PRICE AND CALCULATION OF APPRECIATION. Each Stock
Appreciation Right will be denominated in shares of Common Stock equivalents.
The appreciation distribution payable on the exercise of a Stock Appreciation
Right will be not greater than an amount equal to the excess of (i) the
aggregate Fair Market Value (on the date of the exercise of the Stock
Appreciation Right) of a number of shares of Common Stock equal to the number of
share of Common Stock equivalents in which the Participant is vested under such
Stock Appreciation Right, and with respect to which the Participant is
exercising the Stock Appreciation Right on such date, over (ii) an amount (the
strike price) that will be determined by the Board at the time of grant of the
Stock Appreciation Right.

            (ii) VESTING. At the time of the grant of a Stock Appreciation
Right, the Board may impose such restrictions or conditions to the vesting of
such Stock Appreciation Right as it, in its sole discretion, deems appropriate.

                                      18.
<PAGE>

            (iii) EXERCISE. To exercise any outstanding Stock Appreciation
Right, the Participant must provide written notice of exercise to the Company in
compliance with the provisions of the Stock Appreciation Right Agreement
evidencing such Stock Appreciation Right.

            (iv) PAYMENT. The appreciation distribution in respect to a Stock
Appreciation Right may be paid in Common Stock, in cash, in any combination of
the two or in any other form of consideration, as determined by the Board and
contained in the Stock Appreciation Right Agreement evidencing such Stock
Appreciation Right.

            (v) TERMINATION OF CONTINUOUS SERVICE. In the event that a
Participant's Continuous Service terminates, the Participant may exercise his or
her Stock Appreciation Right (to the extent that the Participant was entitled to
exercise such Stock Appreciation Right as of the date of termination) but only
within such period of time ending on the earlier of (i) the date three (3)
months following the termination of the Participant's Continuous Service (or
such longer or shorter period specified in the Stock Appreciation Right
Agreement), or (ii) the expiration of the term of the Stock Appreciation Right
as set forth in the Stock Appreciation Right Agreement. If, after termination,
the Participant does not exercise his or her Stock Appreciation Right within the
time specified herein or in the Stock Appreciation Right Agreement (as
applicable), the Stock Appreciation Right shall terminate.

      (e) OTHER STOCK AWARDS. Other forms of Stock Awards valued in whole or in
part by reference to, or otherwise based on, Common Stock may be granted either
alone or in addition to Stock Awards provided for under Section 6 and the
preceding provisions of this Section 7. Subject to the provisions of the Plan,
the Board shall have sole and complete authority to determine the persons to
whom and the time or times at which such Other Stock Awards will be granted, the
number of shares of Common Stock (or the cash equivalent thereof) to be granted
pursuant to such Other Stock Awards and all other terms and conditions of such
Other Stock Awards.

8. COVENANTS OF THE COMPANY.

      (a) AVAILABILITY OF SHARES. During the terms of the Stock Awards, the
Company shall keep available at all times the number of shares of Common Stock
required to satisfy such Stock Awards.

      (b) SECURITIES LAW COMPLIANCE. The Company shall seek to obtain from each
regulatory commission or agency having jurisdiction over the Plan such authority
as may be required to grant Stock Awards and to issue and sell shares of Common
Stock upon exercise of the Stock Awards; provided, however, that this
undertaking shall not require the Company to register under the Securities Act
the Plan, any Stock Award or any Common Stock issued or issuable pursuant to any
such Stock Award. If, after reasonable efforts, the Company is unable to obtain
from any such regulatory commission or agency the authority that counsel for the
Company deems necessary for the lawful issuance and sale of Common Stock under
the Plan, the Company shall be relieved from any liability for failure to issue
and sell Common Stock upon exercise of such Stock Awards unless and until such
authority is obtained.

                                      19.
<PAGE>

9. USE OF PROCEEDS FROM SALES OF COMMON STOCK.

      Proceeds from the sale of shares of Common Stock pursuant to Stock Awards
shall constitute general funds of the Company.

10. MISCELLANEOUS.

      (a) ACCELERATION OF EXERCISABILITY AND VESTING. The Board shall have the
power to accelerate the time at which a Stock Award may first be exercised or
the time during which a Stock Award or any part thereof will vest in accordance
with the Plan, notwithstanding the provisions in the Stock Award stating the
time at which it may first be exercised or the time during which it will vest.

      (b) STOCKHOLDER RIGHTS. No Participant shall be deemed to be the holder
of, or to have any of the rights of a holder with respect to, any shares of
Common Stock subject to such Stock Award unless and until such Participant has
satisfied all requirements for exercise of the Stock Award pursuant to its
terms.

      (c) NO EMPLOYMENT OR OTHER SERVICE RIGHTS. Nothing in the Plan, any Stock
Award Agreement or other instrument executed thereunder or any Stock Award
granted pursuant thereto shall confer upon any Participant any right to continue
to serve the Company or an Affiliate in the capacity in effect at the time the
Stock Award was granted or shall affect the right of the Company or an Affiliate
to terminate (i) the employment of an Employee with or without notice and with
or without cause, (ii) the service of a Consultant pursuant to the terms of such
Consultant's agreement with the Company or an Affiliate, or (iii) the service of
a Director pursuant to the Bylaws of the Company or an Affiliate, and any
applicable provisions of the corporate law of the state in which the Company or
the Affiliate is incorporated, as the case may be.

      (d) INCENTIVE STOCK OPTION $100,000 LIMITATION. To the extent that the
aggregate Fair Market Value (determined at the time of grant) of Common Stock
with respect to which Incentive Stock Options are exercisable for the first time
by any Optionholder during any calendar year (under all plans of the Company and
any Affiliates) exceeds one hundred thousand dollars ($100,000), the Options or
portions thereof that exceed such limit (according to the order in which they
were granted) shall be treated as Nonstatutory Stock Options, notwithstanding
any contrary provision of the applicable Option Agreement(s).

      (e) INVESTMENT ASSURANCES. The Company may require a Participant, as a
condition of exercising or acquiring Common Stock under any Stock Award, (i) to
give written assurances satisfactory to the Company as to the Participant's
knowledge and experience in financial and business matters and/or to employ a
purchaser representative reasonably satisfactory to the Company who is
knowledgeable and experienced in financial and business matters and that he or
she is capable of evaluating, alone or together with the purchaser
representative, the merits and risks of exercising the Stock Award; and (ii) to
give written assurances satisfactory to the Company stating that the Participant
is acquiring Common Stock subject to the Stock Award for the Participant's own
account and not with any present intention of selling or otherwise distributing
the Common Stock. The foregoing requirements, and any assurances given pursuant

                                      20.
<PAGE>

to such requirements, shall be inoperative if (i) the issuance of the shares
upon the exercise or acquisition of Common Stock under the Stock Award has been
registered under a then currently effective registration statement under the
Securities Act, or (ii) as to any particular requirement, a determination is
made by counsel for the Company that such requirement need not be met in the
circumstances under the then applicable securities laws. The Company may, upon
advice of counsel to the Company, place legends on stock certificates issued
under the Plan as such counsel deems necessary or appropriate in order to comply
with applicable securities laws, including, but not limited to, legends
restricting the transfer of the Common Stock.

      (f) WITHHOLDING OBLIGATIONS. To the extent provided by the terms of a
Stock Award Agreement, the Company may, in its sole discretion, satisfy any
federal, state or local tax withholding obligation relating to a Stock Award by
any of the following means (in addition to the Company's right to withhold from
any compensation paid to the Participant by the Company) or by a combination of
such means: (i) causing the Participant to tender a cash payment; (ii)
withholding shares of Common Stock from the shares of Common Stock issued or
otherwise issuable to the Participant in connection with the Stock Award; or
(iii) by such other method as may be set forth in the Stock Award Agreement.

      (g) ELECTRONIC DELIVERY. Any reference herein to a "written" agreement or
document shall include any agreement or document delivered electronically or
posted on the Company's intranet.

      (h) PERFORMANCE STOCK AWARDS. A Stock Award may be granted, may vest, or
may be exercised based upon service conditions, upon the attainment during a
Performance Period of certain Performance Goals, or both. The length of any
Performance Period, the Performance Goals to be achieved during the Performance
Period, and the measure of whether and to what degree such Performance Goals
have been attained shall be conclusively determined by the Board in its sole
discretion. The maximum benefit to be received by any individual in any calendar
year attributable to Stock Awards described in this Section 10(h) shall not
exceed the value of one million five hundred thousand (1,500,000) shares of
Common Stock.

11. ADJUSTMENTS UPON CHANGES IN COMMON STOCK; CORPORATE TRANSACTIONS.

      (a) CAPITALIZATION ADJUSTMENTS. If any change is made in, or other events
occur with respect to, the Common Stock subject to the Plan or subject to any
Stock Award after the effective date of the Plan set forth in Section 14 without
the receipt of consideration by the Company (through merger, consolidation,
reorganization, recapitalization, reincorporation, stock dividend, dividend in
property other than cash, stock split, liquidating dividend, combination of
shares, exchange of shares, change in corporate structure or other transaction
not involving the receipt of consideration by the Company (each a
"CAPITALIZATION ADJUSTMENT")), the Plan shall be appropriately adjusted in the
class(es) and maximum number of securities subject to the Plan pursuant to
Sections 4(a) and 4(b), the maximum number of securities that may be awarded to
any person pursuant to Section 5(c), and the outstanding Stock Awards will be
appropriately adjusted in the class(es) and number of securities and price per
share of stock subject to such outstanding Stock Awards. The Board shall make
such adjustments, and its determination shall be final, binding and conclusive.
(Notwithstanding the foregoing, the conversion of any

                                      21.
<PAGE>

convertible securities of the Company shall not be treated as a transaction
"without receipt of consideration" by the Company.)

      (b) DISSOLUTION OR LIQUIDATION. In the event of a dissolution or
liquidation of the Company, all outstanding Stock Awards (other than Stock
Awards consisting of vested and outstanding shares of Common Stock not subject
to the Company's right of repurchase) shall terminate immediately prior to the
completion of such dissolution or liquidation, and the shares of Common Stock
subject to the Company's repurchase option may be repurchased by the Company
notwithstanding the fact that the holder of such Stock Award is providing
Continuous Service, provided, however, that the Board may, in its sole
discretion, cause some or all Stock Awards to become fully vested, exercisable
and/or no longer subject to repurchase or forfeiture (to the extent such Stock
Awards have not previously expired or terminated) before the dissolution or
liquidation is completed but contingent on its completion.

      (c) CORPORATE TRANSACTION. The following provisions shall apply to Stock
Awards in the event of a Corporate Transaction unless otherwise provided in a
written agreement between the Company or any Affiliate and the holder of the
Stock Award:

            (i) STOCK AWARDS MAY BE ASSUMED. In the event of a Corporate
Transaction, any surviving corporation or acquiring corporation (or the
surviving or acquiring corporation's parent company) may assume or continue any
or all Stock Awards outstanding under the Plan or may substitute similar stock
awards for Stock Awards outstanding under the Plan (including but not limited
to, awards to acquire the same consideration paid to the stockholders of the
Company pursuant to the Corporate Transaction), and any reacquisition or
repurchase rights held by the Company in respect of Common Stock issued pursuant
to Stock Awards may be assigned by the Company to the successor of the Company
(or the successor's parent company, if any), in connection with such Corporate
Transaction. A surviving corporation or acquiring corporation may choose to
assume or continue only a portion of a Stock Award or substitute a similar stock
award for only a portion of a Stock Award. The terms of any assumption,
continuation or substitution shall be set by the Board in accordance with the
provisions of Section 3.

            (ii) STOCK AWARDS HELD BY CURRENT PARTICIPANTS. In the event of a
Corporate Transaction in which the surviving corporation or acquiring
corporation (or its parent company) does not assume or continue such outstanding
Stock Awards or substitute similar stock awards for such outstanding Stock
Awards, then with respect to Stock Awards that have not been assumed, continued
or substituted and that are held by Participants whose Continuous Service has
not terminated prior to the effective time of the Corporate Transaction
(referred to as the "CURRENT PARTICIPANTS"), the vesting of such Stock Awards
(and, if applicable, the time at which such Stock Awards may be exercised) shall
(contingent upon the effectiveness of the Corporate Transaction) be accelerated
in full to a date prior to the effective time of such Corporate Transaction as
the Board shall determine (or, if the Board shall not determine such a date, to
the date that is five (5) days prior to the effective time of the Corporate
Transaction), and such Stock Awards shall terminate if not exercised (if
applicable) at or prior to the effective time of the Corporate Transaction, and
any reacquisition or repurchase rights held by the Company with respect to such
Stock Awards shall lapse (contingent upon the effectiveness of the Corporate
Transaction).

                                      22.
<PAGE>

            (iii) STOCK AWARDS HELD BY FORMER PARTICIPANTS. In the event of a
Corporate Transaction in which the surviving corporation or acquiring
corporation (or its parent company) does not assume or continue such outstanding
Stock Awards or substitute similar stock awards for such outstanding Stock
Awards, then with respect to Stock Awards that have not been assumed, continued
or substituted and that are held by persons other than Current Participants, the
vesting of such Stock Awards (and, if applicable, the time at which such Stock
Award may be exercised) shall not be accelerated and such Stock Awards (other
than a Stock Award consisting of vested and outstanding shares of Common Stock
not subject to the Company's right of repurchase) shall terminate if not
exercised (if applicable) prior to the effective time of the Corporate
Transaction; provided, however, that any reacquisition or repurchase rights held
by the Company with respect to such Stock Awards shall not terminate and may
continue to be exercised notwithstanding the Corporate Transaction.

            (iv) PAYMENT FOR STOCK AWARDS IN LIEU OF EXERCISE. Notwithstanding
the foregoing, in the event a Stock Award will terminate if not exercised prior
to the effective time of a Corporate Transaction, the Board may provide, in its
sole discretion, that the holder of such Stock Award may not exercise such Stock
Award but will receive a payment, in such form as may be determined by the
Board, equal in value to the excess, if any, of (i) the value of the property
the holder of the Stock Award would have received upon the exercise of the Stock
Award, over (ii) any exercise price payable by such holder in connection with
such exercise.

      (d) CHANGE IN CONTROL. A Stock Award may be subject to additional
acceleration of vesting and exercisability upon or after a Change in Control as
may be provided in the Stock Award Agreement for such Stock Award or as may be
provided in any other written agreement between the Company or any Affiliate and
the Participant, but in the absence of such provision, no such acceleration
shall occur.

12. AMENDMENT OF THE PLAN AND STOCK AWARDS.

      (a) AMENDMENT OF PLAN. Subject to the limitations, if any, of applicable
law, the Board at any time, and from time to time, may amend the Plan. However,
except as provided in Section 11(a) relating to Capitalization Adjustments, no
amendment shall be effective unless approved by the stockholders of the Company
to the extent stockholder approval is necessary to satisfy applicable law.

      (b) STOCKHOLDER APPROVAL. The Board, in its sole discretion, may submit
any other amendment to the Plan for stockholder approval, including, but not
limited to, amendments to the Plan intended to satisfy the requirements of
Section 162(m) of the Code and the regulations thereunder regarding the
exclusion of performance-based compensation from the limit on corporate
deductibility of compensation paid to Covered Employees.

      (c) CONTEMPLATED AMENDMENTS. It is expressly contemplated that the Board
may amend the Plan in any respect the Board deems necessary or advisable to
provide eligible Employees with the maximum benefits provided or to be provided
under the provisions of the Code and the regulations promulgated thereunder
relating to Incentive Stock Options and/or to bring the Plan and/or Incentive
Stock Options granted under it into compliance therewith.

                                      23.
<PAGE>

      (d) NO IMPAIRMENT OF RIGHTS. Rights under any Stock Award granted before
amendment of the Plan shall not be impaired by any amendment of the Plan unless
(i) the Company requests the consent of the affected Participant, and (ii) such
Participant consents in writing.

      (e) AMENDMENT OF STOCK AWARDS. The Board, at any time and from time to
time, may amend the terms of any one or more Stock Awards, including, but not
limited to, amendments to provide terms more favorable than previously provided
in the Stock Award Agreement, subject to any specified limits in the Plan that
are not subject to Board discretion; provided, however, that the rights under
any Stock Award shall not be impaired by any such amendment unless (i) the
Company requests the consent of the affected Participant, and (ii) such
Participant consents in writing.

13. TERMINATION OR SUSPENSION OF THE PLAN.

      (a) PLAN TERM. The Board may suspend or terminate the Plan at any time.
Unless sooner terminated, the Plan shall terminate on the day before the tenth
(10th) anniversary of the date the Plan is adopted by the Board or approved by
the stockholders of the Company, whichever is earlier. No Stock Awards may be
granted under the Plan while the Plan is suspended or after it is terminated.

      (b) NO IMPAIRMENT OF RIGHTS. Suspension or termination of the Plan shall
not impair rights and obligations under any Stock Award granted while the Plan
is in effect except with the written consent of the affected Participant.

14. EFFECTIVE DATE OF PLAN.

      The Plan shall become effective on the IPO Date, but no Stock Award shall
be exercised (or, in the case of a Stock Purchase Award, Stock Bonus Award,
Stock Unit Award, or Other Stock Award shall be granted) unless and until the
Plan has been approved by the stockholders of the Company, which approval shall
be within twelve (12) months before or after the date the Plan is adopted by the
Board.

15. CHOICE OF LAW.

      The law of the State of Delaware shall govern all questions concerning the
construction, validity and interpretation of this Plan, without regard to such
state's conflict of laws rules.

                                      24.
<PAGE>

                                  STENTOR, INC.
                           2005 EQUITY INCENTIVE PLAN

                                OPTION AGREEMENT
              (INCENTIVE STOCK OPTION OR NONSTATUTORY STOCK OPTION)

      Pursuant to your Option Grant Notice ("GRANT NOTICE") and this Option
Agreement, Stentor, Inc. (the "COMPANY") has granted you an option under its
2005 Equity Incentive Plan (the "PLAN") to purchase the number of shares of the
Company's Common Stock indicated in your Grant Notice at the exercise price
indicated in your Grant Notice. Defined terms not explicitly defined in this
Option Agreement but defined in the Plan shall have the same definitions as in
the Plan.

      The details of your option are as follows:

      1. VESTING. Subject to the limitations contained herein, your option will
vest as provided in your Grant Notice, provided that vesting will cease upon the
termination of your Continuous Service.

      2. NUMBER OF SHARES AND EXERCISE PRICE. The number of shares of Common
Stock subject to your option and your exercise price per share referenced in
your Grant Notice may be adjusted from time to time for Capitalization
Adjustments.

      3. EXERCISE PRIOR TO VESTING ("EARLY EXERCISE"). If permitted in your
Grant Notice (i.e., the "Exercise Schedule" indicates that "Early Exercise" of
your option is permitted) and subject to the provisions of your option, you may
elect at any time that is both (i) during the period of your Continuous Service
and (ii) during the term of your option, to exercise all or part of your option,
including the nonvested portion of your option; provided, however, that:

            (a) a partial exercise of your option shall be deemed to cover first
vested shares of Common Stock and then the earliest vesting installment of
unvested shares of Common Stock;

            (b) any shares of Common Stock so purchased from installments that
have not vested as of the date of exercise shall be subject to the purchase
option in favor of the Company as described in the Company's form of Early
Exercise Stock Purchase Agreement;

            (c) you shall enter into the Company's form of Early Exercise Stock
Purchase Agreement with a vesting schedule that will result in the same vesting
as if no early exercise had occurred; and

            (d) if your option is an Incentive Stock Option, then, to the extent
that the aggregate Fair Market Value (determined at the time of grant) of the
shares of Common Stock with respect to which your option plus all other
Incentive Stock Options you hold are exercisable for the first time by you
during any calendar year (under all plans of the Company and its Affiliates)
exceeds one hundred thousand dollars ($100,000), your option(s) or portions
thereof

                                       1.
<PAGE>

that exceed such limit (according to the order in which they were granted) shall
be treated as Nonstatutory Stock Options.

      4. METHOD OF PAYMENT. Payment of the exercise price is due in full upon
exercise of all or any part of your option. You may elect to make payment of the
exercise price in cash or by check or in any other manner PERMITTED BY YOUR
GRANT NOTICE, which may include one or more of the following:

            (a) In the Company's sole discretion at the time your option is
exercised and provided that at the time of exercise the Common Stock is publicly
traded and quoted regularly in The Wall Street Journal, pursuant to a program
developed under Regulation T as promulgated by the Federal Reserve Board that,
prior to the issuance of Common Stock, results in either the receipt of cash (or
check) by the Company or the receipt of irrevocable instructions to pay the
aggregate exercise price to the Company from the sales proceeds.

            (b) In the Company's sole discretion at the time your option is
exercised and provided that at the time of exercise the Common Stock is publicly
traded and quoted regularly in The Wall Street Journal, by delivery to the
Company (either by actual delivery or attestation) of already-owned shares of
Common Stock either that you have held for the period required to avoid a charge
to the Company's reported earnings (generally six (6) months) or that you did
not acquire, directly or indirectly from the Company, that are owned free and
clear of any liens, claims, encumbrances or security interests, and that are
valued at Fair Market Value on the date of exercise. "Delivery" for these
purposes, in the sole discretion of the Company at the time you exercise your
option, shall include delivery to the Company of your attestation of ownership
of such shares of Common Stock in a form approved by the Company.
Notwithstanding the foregoing, you may not exercise your option by tender to the
Company of Common Stock to the extent such tender would violate the provisions
of any law, regulation or agreement restricting the redemption of the Company's
stock.

      5. WHOLE SHARES. You may exercise your option only for whole shares of
Common Stock.

      6. SECURITIES LAW COMPLIANCE. Notwithstanding anything to the contrary
contained herein, you may not exercise your option unless the shares of Common
Stock issuable upon such exercise are then registered under the Securities Act
or, if such shares of Common Stock are not then so registered, the Company has
determined that such exercise and issuance would be exempt from the registration
requirements of the Securities Act. The exercise of your option also must comply
with other applicable laws and regulations governing your option, and you may
not exercise your option if the Company determines that such exercise would not
be in material compliance with such laws and regulations.

      7. TERM. You may not exercise your option before the commencement or after
the expiration of its term. The term of your option commences on the Date of
Grant and expires upon the earliest of the following:

            (a) three (3) months after the termination of your Continuous
Service for any reason other than your Disability or death or upon a Change in
Control, provided that if during

                                       2.
<PAGE>

any part of such three (3) month period your option is not exercisable solely
because of the condition set forth in Section 6, your option shall not expire
until the earlier of the Expiration Date or until it shall have been exercisable
for an aggregate period of three (3) months after the termination of your
Continuous Service;

            (b) twelve (12) months after the termination of your Continuous
Service due to your Disability;

            (c) eighteen (18) months after your death if you die either during
your Continuous Service or within three (3) months after your Continuous Service
terminates;

            (d) twelve (12) months following the effective date of a Change in
Control if your Continuous Service terminates as of or within twelve (12) months
following such a Change in Control;

            (e) the Expiration Date indicated in your Grant Notice; or

            (f) the day before the tenth (10th) anniversary of the Date of
Grant.

      If your option is an Incentive Stock Option, note that to obtain the
federal income tax advantages associated with an Incentive Stock Option, the
Code requires that at all times beginning on the date of grant of your option
and ending on the day three (3) months before the date of your option's
exercise, you must be an employee of the Company or an Affiliate, except in the
event of your death or your permanent and total disability, as defined in
Section 22(e) of the Code. (The definition of disability in Section 22(e) of the
Code is different from the definition of the Disability under the Plan). The
Company has provided for extended exercisability of your option under certain
circumstances for your benefit but cannot guarantee that your option will
necessarily be treated as an Incentive Stock Option if you continue to provide
services to the Company or an Affiliate as a Consultant or Director after your
employment terminates or if you otherwise exercise your option more than three
(3) months after the date your employment with the Company or an Affiliate
terminates.

      8. EXERCISE.

            (a) You may exercise the vested portion of your option (and the
unvested portion of your option if your Grant Notice so permits) during its term
by delivering a Notice of Exercise (in a form designated by the Company)
together with the exercise price to the Secretary of the Company, or to such
other person as the Company may designate, during regular business hours,
together with such additional documents as the Company may then require.

            (b) By exercising your option you agree that, as a condition to any
exercise of your option, the Company may require you to enter into an
arrangement providing for the payment by you to the Company of any tax
withholding obligation of the Company arising by reason of (i) the exercise of
your option, (ii) the lapse of any substantial risk of forfeiture to which the
shares of Common Stock are subject at the time of exercise, or (iii) the
disposition of shares of Common Stock acquired upon such exercise.

                                       3.
<PAGE>

            (c) If your option is an Incentive Stock Option, by exercising your
option you agree that you will notify the Company in writing within fifteen (15)
days after the date of any disposition of any of the shares of the Common Stock
issued upon exercise of your option that occurs within two (2) years after the
date of your option grant or within one (1) year after such shares of Common
Stock are transferred upon exercise of your option.

      9. TRANSFERABILITY. Your option is not transferable, except by will or by
the laws of descent and distribution, and is exercisable during your life only
by you. Notwithstanding the foregoing, by delivering written notice to the
Company, in a form satisfactory to the Company, you may designate a third party
who, in the event of your death, shall thereafter be entitled to exercise your
option. In addition, you may transfer your option to a trust if you are
considered to be the sole beneficial owner (determined under Section 671 of the
Code and applicable state law) while the option is held in the trust, provided
that you and the trustee enter into transfer and other agreements required by
the Company.

      10. OPTION NOT A SERVICE CONTRACT. Your option is not an employment or
service contract, and nothing in your option shall be deemed to create in any
way whatsoever any obligation on your part to continue in the employ of the
Company or an Affiliate, or of the Company or an Affiliate to continue your
employment. In addition, nothing in your option shall obligate the Company or an
Affiliate, their respective stockholders, Boards of Directors, Officers or
Employees to continue any relationship that you might have as a Director or
Consultant for the Company or an Affiliate.

      11. WITHHOLDING OBLIGATIONS.

            (a) At the time you exercise your option, in whole or in part, or at
any time thereafter as requested by the Company, you hereby authorize
withholding from payroll and any other amounts payable to you, and otherwise
agree to make adequate provision for (including by means of a "cashless
exercise" pursuant to a program developed under Regulation T as promulgated by
the Federal Reserve Board to the extent permitted by the Company), any sums
required to satisfy the federal, state, local and foreign tax withholding
obligations of the Company or an Affiliate, if any, which arise in connection
with the exercise of your option.

            (b) Upon your request and subject to approval by the Company, in its
sole discretion, and compliance with any applicable legal conditions or
restrictions, the Company may withhold from fully vested shares of Common Stock
otherwise issuable to you upon the exercise of your option a number of whole
shares of Common Stock having a Fair Market Value, determined by the Company as
of the date of exercise, not in excess of the minimum amount of tax required to
be withheld by law (or such lower amount as may be necessary to avoid variable
award accounting). If the date of determination of any tax withholding
obligation is deferred to a date later than the date of exercise of your option,
share withholding pursuant to the preceding sentence shall not be permitted
unless you make a proper and timely election under Section 83(b) of the Code,
covering the aggregate number of shares of Common Stock acquired upon such
exercise with respect to which such determination is otherwise deferred, to
accelerate the determination of such tax withholding obligation to the date of
exercise of your option. Notwithstanding the filing of such election, shares of
Common Stock shall be withheld solely from fully vested shares of Common Stock
determined as of the date of exercise of your option

                                       4.
<PAGE>

that are otherwise issuable to you upon such exercise. Any adverse consequences
to you arising in connection with such share withholding procedure shall be your
sole responsibility.

            (c) You may not exercise your option unless the tax withholding
obligations of the Company and/or any Affiliate are satisfied. Accordingly, you
may not be able to exercise your option when desired even though your option is
vested, and the Company shall have no obligation to issue a certificate for such
shares of Common Stock or release such shares of Common Stock from any escrow
provided for herein unless such obligations are satisfied.

      12. NOTICES. Any notices provided for in your option or the Plan shall be
given in writing and shall be deemed effectively given upon receipt or, in the
case of notices delivered by mail by the Company to you, five (5) days after
deposit in the United States mail, postage prepaid, addressed to you at the last
address you provided to the Company.

      13. GOVERNING PLAN DOCUMENT. Your option is subject to all the provisions
of the Plan, the provisions of which are hereby made a part of your option, and
is further subject to all interpretations, amendments, rules and regulations,
which may from time to time be promulgated and adopted pursuant to the Plan. In
the event of any conflict between the provisions of your option and those of the
Plan, the provisions of the Plan shall control.

                                       5.<PAGE>

                                                                    EXHIBIT 10.5

                                  STENTOR, INC.

                 2005 NON-EMPLOYEE DIRECTORS' STOCK OPTION PLAN

                            ADOPTED: JANUARY 19, 2005
                      APPROVED BY STOCKHOLDERS: _____, 2005

1. GENERAL.

      (a) ELIGIBLE OPTION RECIPIENTS. The persons eligible to receive Options
are the Non-Employee Directors of the Company.

      (b) GENERAL PURPOSE. The Company, by means of the Plan, seeks to retain
the services of its Non-Employee Directors, to secure and retain the services of
new Non-Employee Directors and to provide incentives for such persons to exert
maximum efforts for the success of the Company and any Affiliate by giving them
an opportunity to benefit from increases in value of the Common Stock through
the automatic grant of Nonstatutory Stock Options.

2. DEFINITIONS.

      As used in the Plan, the following definitions shall apply to the
capitalized terms indicated below:

      (a) "ACCOUNTANT" means the independent public accountants of the Company.

      (b) "AFFILIATE" means (i) any corporation (other than the Company) in an
unbroken chain of corporations ending with the Company, provided each
corporation in the unbroken chain (other than the Company) owns, at the time of
the determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain, and (ii) any corporation (other than the Company) in an unbroken
chain of corporations beginning with the Company, provided each corporation
(other than the last corporation) in the unbroken chain owns, at the time of the
determination, stock possessing fifty percent (50%) or more of the total
combined voting power of all classes of stock in one of the other corporations
in such chain. The Board shall have the authority to determine (i) the time or
times at which the ownership tests are applied, and (ii) whether "Affiliate"
includes entities other than corporations within the foregoing definition.

      (c) "ANNUAL GRANT" means an Option granted annually to all Non-Employee
Directors who meet the specified criteria pursuant to Section 6(b).

      (d) "ANNUAL MEETING" means the annual meeting of the stockholders of the
Company.

      (e) "BOARD" means the Board of Directors of the Company.

                                       1.
<PAGE>

      (f) "CAPITALIZATION ADJUSTMENT" has the meaning ascribed to that term in
Section 11(a).

      (g) "CHANGE IN CONTROL" means the occurrence, in a single transaction or
in a series of related transactions, of any one or more of the following events:

            (i) any Exchange Act Person becomes the Owner, directly or
indirectly, of securities of the Company representing more than fifty percent
(50%) of the combined voting power of the Company's then outstanding securities
other than by virtue of a merger, consolidation or similar transaction.
Notwithstanding the foregoing, a Change in Control shall not be deemed to occur
(a) on account of the acquisition of securities of the Company by an investor,
any affiliate thereof or any other Exchange Act Person from the Company in a
transaction or series of related transactions the primary purpose of which is to
obtain financing for the Company through the issuance of equity securities or
(b) solely because the level of Ownership held by any Exchange Act Person (the
"SUBJECT PERSON") exceeds the designated percentage threshold of the outstanding
voting securities as a result of a repurchase or other acquisition of voting
securities by the Company reducing the number of shares outstanding, provided
that if a Change in Control would occur (but for the operation of this sentence)
as a result of the acquisition of voting securities by the Company, and after
such share acquisition, the Subject Person becomes the Owner of any additional
voting securities that, assuming the repurchase or other acquisition had not
occurred, increases the percentage of the then outstanding voting securities
Owned by the Subject Person over the designated percentage threshold, then a
Change in Control shall be deemed to occur;

            (ii) there is consummated a merger, consolidation or similar
transaction involving (directly or indirectly) the Company and, immediately
after the consummation of such merger, consolidation or similar transaction, the
stockholders of the Company immediately prior thereto do not Own, directly or
indirectly, either (a) outstanding voting securities representing more than
fifty percent (50%) of the combined outstanding voting power of the surviving
Entity in such merger, consolidation or similar transaction or (b) more than
fifty percent (50%) of the combined outstanding voting power of the parent of
the surviving Entity in such merger, consolidation or similar transaction, in
each case in substantially the same proportions as their Ownership of the
outstanding voting securities of the Company immediately prior to such
transaction;

            (iii) the stockholders of the Company approve or the Board approves
a plan of complete dissolution or liquidation of the Company, or a complete
dissolution or liquidation of the Company shall otherwise occur;

            (iv) there is consummated a sale, lease, exclusive license or other
disposition of all or substantially all of the consolidated assets of the
Company and its Subsidiaries, other than a sale, lease, license or other
disposition of all or substantially all of the consolidated assets of the
Company and its Subsidiaries to an Entity, more than fifty percent (50%) of the
combined voting power of the voting securities of which are Owned by
stockholders of the Company in substantially the same proportions as their
Ownership of the outstanding voting securities of the Company immediately prior
to such sale, lease, license or other disposition; or

                                       2.
<PAGE>

            (v) individuals who, on the date this Plan is adopted by the Board,
are members of the Board (the "INCUMBENT BOARD") cease for any reason to
constitute at least a majority of the members of the Board; provided, however,
that if the appointment or election (or nomination for election) of any new
Board member was approved or recommended by a majority vote of the members of
the Incumbent Board then still in office, such new member shall, for purposes of
this Plan, be considered as a member of the Incumbent Board.

      The term Change in Control shall not include a sale of assets, merger or
other transaction effected exclusively for the purpose of changing the domicile
of the Company.

      Notwithstanding the foregoing or any other provision of this Plan, the
definition of Change in Control (or any analogous term) in an individual written
agreement between the Company or any Affiliate and the Optionholder shall
supersede the foregoing definition with respect to Options subject to such
agreement; provided, however, that if no definition of Change in Control or any
analogous term is set forth in such an individual written agreement, the
foregoing definition shall apply.

      (h) "CODE" means the Internal Revenue Code of 1986, as amended.

      (i) "COMMON STOCK" means the common stock of the Company.

      (j) "COMPANY" means Stentor, Inc., a Delaware corporation.

      (k) "CONSULTANT" means any person, including an advisor, who is (i)
engaged by the Company or an Affiliate to render consulting or advisory services
and is compensated for such services, or (ii) serving as a member of the Board
of Directors of an Affiliate and is compensated for such services. However,
service solely as a Director, or payment of a fee for such service, shall not
cause a Director to be considered a "Consultant" for purposes of the Plan.

      (l) "CONTINUOUS SERVICE" means that the Optionholder's service with the
Company or an Affiliate, whether as an Employee, Director or Consultant, is not
interrupted or terminated. A change in the capacity in which the Optionholder
renders service to the Company or an Affiliate as an Employee, Consultant or
Director or a change in the entity for which the Optionholder renders such
service, provided that there is no interruption or termination of the
Optionholder's service with the Company or an Affiliate, shall not terminate an
Optionholder's Continuous Service. For example, a change in status from a
Non-Employee Director of the Company to a Consultant of an Affiliate or an
Employee of the Company will not constitute an interruption of Continuous
Service. To the extent permitted by law, the Board or the chief executive
officer of the Company, in that party's sole discretion, may determine whether
Continuous Service shall be considered interrupted in the case of any leave of
absence approved by that party, including sick leave, military leave or any
other personal leave. Notwithstanding the foregoing, a leave of absence shall be
treated as Continuous Service for purposes of vesting in an Option only to such
extent as may be provided in the Company's leave of absence policy or in the
written terms of the Optionholder's leave of absence.

      (m) "CORPORATE TRANSACTION" means the occurrence, in a single transaction
or in a series of related transactions, of any one or more of the following
events:

                                       3.
<PAGE>

            (i) a sale or other disposition of all or substantially all, as
determined by the Board in its sole discretion, of the consolidated assets of
the Company and its Subsidiaries;

            (ii) a sale or other disposition of at least ninety percent (90%) of
the outstanding securities of the Company;

            (iii) the consummation of a merger, consolidation or similar
transaction following which the Company is not the surviving corporation; or

            (iv) the consummation of a merger, consolidation or similar
transaction following which the Company is the surviving corporation but the
shares of Common Stock outstanding immediately preceding the merger,
consolidation or similar transaction are converted or exchanged by virtue of the
merger, consolidation or similar transaction into other property, whether in the
form of securities, cash or otherwise.

      (n) "DIRECTOR" means a member of the Board.

      (o) "DISABILITY" means the permanent and total disability of a person
within the meaning of Section 22(e)(3) of the Code.

      (p) "EMPLOYEE" means any person employed by the Company or an Affiliate.
However, service solely as a Director, or payment of a fee for such services,
shall not cause a Director to be considered an "Employee" for purposes of the
Plan.

      (q) "ENTITY" means a corporation, partnership or other entity.

      (r) "EXCHANGE ACT" means the Securities Exchange Act of 1934, as amended.

      (s) "EXCHANGE ACT PERSON" means any natural person, Entity or "group"
(within the meaning of Section 13(d) or 14(d) of the Exchange Act), except that
"Exchange Act Person" shall not include (i) the Company or any Subsidiary of the
Company, (ii) any employee benefit plan of the Company or any Subsidiary of the
Company or any trustee or other fiduciary holding securities under an employee
benefit plan of the Company or any Subsidiary of the Company, (iii) an
underwriter temporarily holding securities pursuant to an offering of such
securities, (iv) an Entity Owned, directly or indirectly, by the stockholders of
the Company in substantially the same proportions as their Ownership of stock of
the Company; or (v) any natural person, Entity or "group" (within the meaning of
Section 13(d) or 14(d) of the Exchange Act) that, as of the effective date of
the Plan as set forth in Section 14, is the Owner, directly or indirectly, of
securities of the Company representing more than fifty percent (50%) of the
combined voting power of the Company's then outstanding securities.

      (t) "FAIR MARKET VALUE" means, as of any date, the value of the Common
Stock determined as follows:

            (i) If the Common Stock is listed on any established stock exchange
or traded on the Nasdaq National Market or the Nasdaq SmallCap Market, the Fair
Market Value of a share of Common Stock shall be the closing sales price for
such stock (or the closing bid, if no sales were reported) as quoted on such
exchange or market (or the exchange or market with the

                                       4.
<PAGE>

greatest volume of trading in the Common Stock) on the date in question, as
reported in The Wall Street Journal or such other source as the Board deems
reliable. If there is no closing sales price (or closing bid if no sales were
reported) for the Common Stock on the date in question, then the Fair Market
Value shall be the closing selling price (or closing bid if no sales were
reported) on the last preceding date for which such quotation exists.

            (ii) In the absence of such markets for the Common Stock, the Fair
Market Value shall be determined by the Board in good faith.

      (u) "INITIAL GRANT" means an Option granted to a Non-Employee Director who
meets the specified criteria pursuant to Section 6(a).

      (v) "IPO DATE" means the date of the underwriting agreement between the
Company and the underwriter(s) managing the initial public offering of the
Common Stock, pursuant to which the Common Stock is priced for the initial
public offering.

      (w) "NON-EMPLOYEE DIRECTOR" means a Director who is not an Employee.

      (x) "NONSTATUTORY STOCK OPTION" means an Option not intended to qualify as
an incentive stock option within the meaning of Section 422 of the Code and the
regulations promulgated thereunder.

      (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 Nonstatutory Stock Option granted pursuant to the
Plan.

      (aa) "OPTION AGREEMENT" means a written agreement between the Company and
an Optionholder evidencing the terms and conditions of an individual Option
grant. Each Option Agreement shall be subject to the terms and conditions of the
Plan.

      (bb) "OPTIONHOLDER" means a person to whom an Option is granted pursuant
to the Plan or, if applicable, such other person who holds an outstanding
Option.

      (cc) "OWN," "OWNED," "OWNER," "OWNERSHIP" A person or Entity shall be
deemed to "Own," to have "Owned," to be the "Owner" of, or to have acquired
"Ownership" of securities if such person or Entity, directly or indirectly,
through any contract, arrangement, understanding, relationship or otherwise, has
or shares voting power, which includes the power to vote or to direct the
voting, with respect to such securities.

      (dd) "PLAN" means this Stentor, Inc. 2005 Non-Employee Directors' Stock
Option Plan.

      (ee) "RULE 16b-3" means Rule 16b-3 promulgated under the Exchange Act or
any successor to Rule 16b-3, as in effect from time to time.

      (ff) "SECURITIES ACT" means the Securities Act of 1933, as amended.

                                       5.
<PAGE>

      (gg) "SUBSIDIARY" means, with respect to the Company, (i) any corporation
of which more than fifty percent (50%) of the outstanding capital stock having
ordinary voting power to elect a majority of the board of directors of such
corporation (irrespective of whether, at the time, stock of any other class or
classes of such corporation shall have or might have voting power by reason of
the happening of any contingency) is at the time, directly or indirectly, Owned
by the Company, and (ii) any partnership in which the Company has a direct or
indirect interest (whether in the form of voting or participation in profits or
capital contribution) of more than fifty percent (50%).

3. ADMINISTRATION.

      (a) ADMINISTRATION BY BOARD. The Board shall administer the Plan. The
Board may not delegate administration of the Plan.

      (b) POWERS OF BOARD. The Board shall have the power, subject to, and
within the limitations of, the express provisions of the Plan:

            (i) To determine the provisions of each Option to the extent not
specified in the Plan.

            (ii) To construe and interpret the Plan and Options granted under
it, and to establish, amend and revoke rules and regulations for its
administration. The Board, in the exercise of this power, may correct any
defect, omission or inconsistency in the Plan or in any Option Agreement, in a
manner and to the extent it shall deem necessary or expedient to make the Plan
fully effective.

            (iii) To amend the Plan or an Option as provided in Section 12.

            (iv) To terminate or suspend the Plan as provided in Section 13.

            (v) Generally, to exercise such powers and to perform such acts as
the Board deems necessary or expedient to promote the best interests of the
Company and that are not in conflict with the provisions of the Plan.

      (c) EFFECT OF BOARD'S DECISION. All determinations, interpretations and
constructions made by the Board in good faith shall not be subject to review by
any person and shall be final, binding and conclusive on all persons.

4. SHARES SUBJECT TO THE PLAN.

      (a) SHARE RESERVE. Subject to the provisions of Section 11(a) relating to
Capitalization Adjustments, the number of shares of Common Stock that may be
issued pursuant to Options shall not exceed in the aggregate four hundred
thousand (400,000), plus an automatic annual increase beginning on January 1,
2006 and ending on (and including) January 1, 2015, in an amount equal to the
number of shares subject to Options granted during the preceding calendar year;
provided, however, that such automatic annual increase shall not exceed three
hundred thousand (300,000) shares. Notwithstanding the foregoing, the Board may
act prior to the first day of any calendar year, to provide that there shall be
no increase in the share reserve

                                       6.
<PAGE>

for such calendar year or that the increase in the share reserve for such
calendar year shall be a lesser number of shares of Common Stock than would
otherwise occur pursuant to the preceding sentence.

      (b) REVERSION OF SHARES TO THE SHARE RESERVE. If an Option shall for any
reason expire or otherwise terminate, in whole or in part, without having been
exercised in full, the shares of Common Stock not acquired under such Option
shall revert to and again become available for issuance under the Plan. If any
shares subject to an Option are not delivered to an Optionholder because such
shares are withheld for the payment of taxes or the Option is exercised through
a reduction of shares subject to the Option (i.e., "net exercised"), the number
of shares that are not delivered to the Optionholder shall remain available for
issuance under the Plan. If the exercise price of an Option is satisfied by
tendering shares of Common Stock held by the Optionholder (either by actual
delivery or attestation), then the number of shares so tendered shall remain
available for issuance under the Plan.

      (c) SOURCE OF SHARES. The stock issuable under the Plan shall be shares of
authorized but unissued or reacquired Common Stock, including shares repurchased
by the Company on the open market.

5. ELIGIBILITY.

      The Options shall automatically be granted under the Plan as set forth in
Section 6 to all Non-Employee Directors who meet the specified criteria.

6. NON-DISCRETIONARY GRANTS.

      (a) INITIAL GRANTS. Without any further action of the Board, each person
who after the IPO Date is elected or appointed for the first time to be a
Non-Employee Director automatically shall, upon the date of his or her initial
election or appointment to be a Non-Employee Director, be granted an Initial
Grant to purchase forty thousand (40,000) shares of Common Stock on the terms
and conditions set forth herein.

      (b) ANNUAL GRANTS. Without any further action of the Board, on the date of
each Annual Meeting, commencing with the Annual Meeting in 2006, each person who
is then a Non-Employee Director automatically shall be granted an Annual Grant
to purchase ten thousand (10,000) shares of Common Stock on the terms and
conditions set forth herein provided, however, that if the person has not been
serving as an Non-Employee Director for the entire period since the preceding
Annual Meeting, then the number of shares subject to such Annual Grant shall be
reduced pro rata for each full quarter prior to the date of grant during which
such person did not serve as an Non-Employee Director.

7. OPTION PROVISIONS.

      Each Option shall be in such form and shall contain such terms and
conditions as required by the Plan. Each Option shall contain such additional
terms and conditions, not inconsistent with the Plan, as the Board shall deem
appropriate. Each Option shall include (through incorporation of provisions
hereof by reference in the Option or otherwise) the substance of each of the
following provisions:

                                       7.
<PAGE>

      (a) TERM. No Option shall be exercisable after the expiration of ten (10)
years from the date it was granted.

      (b) EXERCISE PRICE. The exercise price of each Option shall be one hundred
percent (100%) of the Fair Market Value of the Common Stock subject to the
Option on the date the Option is granted.

      (c) CONSIDERATION. The purchase price of Common Stock acquired pursuant to
an Option may be paid, to the extent permitted by applicable law, in any
combination of (i) cash or check, (ii) delivery to the Company (either by actual
delivery or attestation) of shares of Common Stock held for more than six (6)
months (or such longer or shorter period of time necessary to avoid a charge to
earnings for financial accounting purposes), or (iii) to the extent permitted by
law, pursuant to a program developed under Regulation T as promulgated by the
Federal Reserve Board that, prior to the issuance of Common Stock, results in
either the receipt of cash (or check) by the Company or the receipt of
irrevocable instructions to pay the aggregate exercise price to the Company from
the sales proceeds.

      (d) TRANSFERABILITY. Except as otherwise provided for in this Section
7(d), an Option shall not be transferable except by will or by the laws of
descent and distribution and shall be exercisable only by the Optionholder
during the life of the Optionholder. However, an Option may be transferred for
no consideration upon written consent of the Board if (i) at the time of
transfer, a Form S-8 registration statement under the Securities Act is
available for the issuance of shares by the Company upon the exercise of such
transferred Option, or (ii) the transfer is to the Optionholder's employer at
the time of transfer or an affiliate of the Optionholder's employer at the time
of transfer. Any such transfer is subject to such limits as the Board may
establish, and subject to the transferee agreeing to remain subject to all the
terms and conditions applicable to the Option prior to such transfer. The
forgoing right to transfer the Option shall apply to the right to consent to
amendments to the Option Agreement for such Option. In addition, until the
Optionholder transfers the Option, an Optionholder may, by delivering written
notice to the Company, in a form provided by or otherwise satisfactory to the
Company, designate a third party who, in the event of the death of the
Optionholder, shall thereafter be entitled to exercise the Option.

      (e) VESTING. Options shall vest as follows:

            (i) INITIAL GRANT. The Initial Grant shall vest in a series of [___]
([___]) successive equal [___] installments over the Optionholder's Continuous
Service over the [___] ([___])-year period measured from the date of grant.

            (ii) ANNUAL GRANT. The Annual Grant shall vest in a series of [___]
([___]) successive equal [___] installments over the Optionholder's Continuous
Service over the [___] ([___])-year period measured from the date of grant.

      (f) EARLY EXERCISE. The Option may, but need not, include a provision
whereby the Optionholder may elect at any time before the Optionholder's
Continuous Service terminates to exercise the Option as to any part or all of
the shares of Common Stock subject to the Option prior to the full vesting of
the Option. Any unvested shared of Common Stock so purchased may

                                       8.
<PAGE>

be subject to a repurchase option in favor of the Company or to any other
restriction the Board determines to be appropriate. The Company will not
exercise its repurchase option until at least six (6) months (or such longer or
shorter period of time required to avoid a charge to earnings for financial
accounting purposes) have elapsed following exercise of the Option unless the
Board otherwise specifically provides in the Option.

      (g) TERMINATION OF CONTINUOUS SERVICE. In the event that an Optionholder's
Continuous Service terminates (other than upon the Optionholder's death or
Disability or upon a Change in Control), the Optionholder may exercise his or
her Option (to the extent that the Optionholder was entitled to exercise such
Option as of the date of termination of Continuous Service) but only within such
period of time ending on the earlier of (i) the date three (3) months following
the termination of the Optionholder's Continuous Service (or such longer or
shorter period specified in the Option Agreement), or (ii) the expiration of the
term of the Option as set forth in the Option Agreement. If, after termination
of Continuous Service, the Optionholder does not exercise his or her Option
within the time specified herein or in the Option Agreement (as applicable), the
Option shall terminate.

      (h) EXTENSION OF TERMINATION DATE. If the exercise of the Option following
the termination of the Optionholder's Continuous Service (other than upon the
Optionholder's death or Disability or upon a Change in Control) would be
prohibited at any time solely because the issuance of shares of Common Stock
would violate the registration requirements under the Securities Act, then the
Option shall terminate on the earlier of (i) the expiration of a period of three
(3) months after the termination of the Optionholder's Continuous Service during
which the exercise of the Option would not be in violation of such registration
requirements, or (ii) the expiration of the term of the Option as set forth in
the Option Agreement.

      (i) DISABILITY OF OPTIONHOLDER. In the event that an Optionholder's
Continuous Service terminates as a result of the Optionholder's Disability, the
Optionholder may exercise his or her Option (to the extent that the Optionholder
was entitled to exercise it as of the date of termination), but only within such
period of time ending on the earlier of (i) the date twelve (12) months
following such termination of Continuous Service, or (ii) the expiration of the
term of the Option as set forth in the Option Agreement. If, after termination,
the Optionholder does not exercise his or her Option within the time specified
herein or in the Option Agreement, the Option shall terminate.

      (j) DEATH OF OPTIONHOLDER. In the event that (i) an Optionholder's
Continuous Service terminates as a result of the Optionholder's death, or (ii)
the Optionholder dies within the three-month period after the termination of the
Optionholder's Continuous Service for a reason other than death, then the Option
may be exercised (to the extent the Optionholder was entitled to exercise such
Option as of the date of death) by the Optionholder's estate, by a person who
acquired the right to exercise the Option by bequest or inheritance or by a
person designated to exercise the Option upon the Optionholder's death, but only
within the period ending on the earlier of (i) the date eighteen (18) months
following the date of death, or (ii) the expiration of the term of such Option
as set forth in the Option Agreement. If, after the Optionholder's death, the
Option is not exercised within the time specified herein, the Option shall
terminate.

                                       9.
<PAGE>

      (k) TERMINATION UPON CHANGE IN CONTROL. In the event that an
Optionholder's Continuous Service terminates as of, or within twelve (12) months
following a Change in Control, the Optionholder may exercise his or her Option
(to the extent that the Optionholder was entitled to exercise such Option as of
the date of termination of Continuous Service) within such period of time ending
on the earlier of (i) the date twelve (12) months following the effective date
of the Change in Control (or such longer or shorter period specified in the
Option Agreement), or (ii) the expiration of the term of the Option as set forth
in the Option Agreement. If, after termination of Continuous Service, the
Optionholder does not exercise his or her Option within the time specified
herein or in the Option Agreement (as applicable), the Option shall terminate.

8. SECURITIES LAW COMPLIANCE.

      The Company shall seek to obtain from each regulatory commission or agency
having jurisdiction over the Plan such authority as may be required to grant
Options and to issue and sell shares of Common Stock upon exercise of the
Options; provided, however, that this undertaking shall not require the Company
to register under the Securities Act the Plan, any Option or any Common Stock
issued or issuable pursuant to any such Option. If, after reasonable efforts,
the Company is unable to obtain from any such regulatory commission or agency
the authority that counsel for the Company deems necessary for the lawful
issuance and sale of Common Stock under the Plan, the Company shall be relieved
from any liability for failure to issue and sell Common Stock upon exercise of
such Options unless and until such authority is obtained.

9. USE OF PROCEEDS FROM SALES OF COMMON STOCK.

      Proceeds from the sale of shares of Common Stock pursuant to Options shall
constitute general funds of the Company.

10. MISCELLANEOUS.

      (a) STOCKHOLDER RIGHTS. No Optionholder shall be deemed to be the holder
of, or to have any of the rights of a holder with respect to, any shares of
Common Stock subject to such Option unless and until such Optionholder has
satisfied all requirements for exercise of the Option pursuant to its terms.

      (b) NO SERVICE RIGHTS. Nothing in the Plan, any instrument executed, or
Option granted pursuant thereto shall confer upon any Optionholder any right to
continue to serve the Company as a Non-Employee Director or shall affect the
right of the Company or an Affiliate to terminate the service of a Director
pursuant to the Bylaws of the Company or an Affiliate, and any applicable
provisions of the corporate law of the state in which the Company or the
Affiliate is incorporated, as the case may be.

      (c) INVESTMENT ASSURANCES. The Company may require an Optionholder, as a
condition of exercising or acquiring Common Stock under any Option, (i) to give
written assurances satisfactory to the Company as to the Optionholder's
knowledge and experience in financial and business matters and/or to employ a
purchaser representative reasonably satisfactory to the Company who is
knowledgeable and experienced in financial and business matters and that he or
she is capable of evaluating, alone or together with the purchaser

                                      10.
<PAGE>

representative, the merits and risks of exercising the Option; and (ii) to give
written assurances satisfactory to the Company stating that the Optionholder is
acquiring the Common Stock subject to the Option for the Optionholder's own
account and not with any present intention of selling or otherwise distributing
the Common Stock. The foregoing requirements, and any assurances given pursuant
to such requirements, shall be inoperative if (i) the issuance of the shares
upon the exercise or acquisition of Common Stock under the Option has been
registered under a then currently effective registration statement under the
Securities Act, or (ii) as to any particular requirement, a determination is
made by counsel for the Company that such requirement need not be met in the
circumstances under the then applicable securities laws. The Company may, upon
advice of counsel to the Company, place legends on stock certificates issued
under the Plan as such counsel deems necessary or appropriate in order to comply
with applicable securities laws, including, but not limited to, legends
restricting the transfer of the Common Stock.

      (d) WITHHOLDING OBLIGATIONS. The Optionholder may satisfy any federal,
state or local tax withholding obligation relating to the exercise or
acquisition of Common Stock under an Option by any of the following means (in
addition to the Company's right to withhold from any compensation paid to the
Optionholder by the Company) or by a combination of such means: (i) tendering a
cash payment; (ii) authorizing the Company to withhold shares from the shares of
the Common Stock otherwise issuable to the Optionholder as a result of the
exercise or acquisition of Common Stock under the Option; provided, however,
that no shares of Common Stock are withheld with a value exceeding the minimum
amount of tax required to be withheld by law; or (iii) delivering to the Company
owned and unencumbered shares of the Common Stock.

      (e) ELECTRONIC DELIVERY. Any reference herein to a "written" agreement or
document shall include any agreement or document delivered electronically or
posted on the Company's intranet.

11. ADJUSTMENTS UPON CHANGES IN COMMON STOCK; CORPORATE TRANSACTIONS.

      (a) CAPITALIZATION ADJUSTMENTS. If any change is made in, or other events
occur with respect to, the Common Stock subject to the Plan or subject to any
Option after the effective date of the Plan set forth in Section 14 without the
receipt of consideration by the Company (through merger, consolidation,
reorganization, recapitalization, reincorporation, stock dividend, dividend in
property other than cash, stock split, liquidating dividend, combination of
shares, exchange of shares, change in corporate structure or other transaction
not involving the receipt of consideration by the Company (each a
"CAPITALIZATION ADJUSTMENT")), the Plan shall be appropriately adjusted in the
class(es) and maximum number of securities subject both to the Plan pursuant to
Section 4 and to the nondiscretionary Options specified in Section 6, and the
outstanding Options will be appropriately adjusted in the class(es) and number
of securities and price per share of stock subject to such outstanding Options.
The Board shall make such adjustments, and its determination shall be final,
binding and conclusive. (Notwithstanding the foregoing, the conversion of any
convertible securities of the Company shall not be treated as a transaction
"without receipt of consideration" by the Company.)

                                      11.
<PAGE>

      (b) DISSOLUTION OR LIQUIDATION. In the event of a dissolution or
liquidation of the Company, all outstanding Options shall terminate immediately
prior to the completion of such dissolution or liquidation.

      (c) CORPORATE TRANSACTION.

            (i) OPTIONS MAY BE ASSUMED. In the event of a Corporate Transaction,
any surviving corporation or acquiring corporation (or the surviving or
acquiring corporation's parent company) may assume or continue any or all
Options outstanding under the Plan or may substitute similar stock options for
Options outstanding under the Plan (including but not limited to, options to
acquire the same consideration paid to the stockholders of the Company pursuant
to the Corporate Transaction), and any reacquisition or repurchase rights held
by the Company in respect of Common Stock issued pursuant to Options may be
assigned by the Company to the successor of the Company (or the successor's
parent company, if any), in connection with such Corporate Transaction. A
surviving corporation or acquiring corporation not choose to assume or continue
only a portion of an Option or substitute a similar option for only a portion of
an Option.

            (ii) OPTIONS HELD BY ACTIVE OPTIONHOLDERS. In the event of a
Corporate Transaction in which the surviving corporation or acquiring
corporation (or its parent company) does not assume or continue such outstanding
Options or substitute similar stock options for such outstanding Options, then
with respect to Options that have not been assumed, continued or substituted and
that are held by Optionholders whose Continuous Service has not terminated prior
to the effective time of the Corporate Transaction (referred to as the "ACTIVE
OPTIONHOLDERS"), the vesting of such Options (and, if applicable, the time at
which such Options may be exercised) shall (contingent upon the effectiveness of
the Corporate Transaction) be accelerated in full to a date prior to the
effective time of such Corporate Transaction as the Board shall determine (or,
if the Board shall not determine such a date, to the date that is five (5) days
prior to the effective time of the Corporate Transaction), and the Options shall
terminate if not exercised (if applicable) at or prior to the effective time of
the Corporate Transaction, and any reacquisition or repurchase rights held by
the Company with respect to such Options shall lapse (contingent upon the
effectiveness of the Corporate Transaction).

            (iii) OPTIONS HELD BY FORMER OPTIONHOLDERS. In the event of a
Corporate Transaction in which the surviving corporation or acquiring
corporation (or its parent company) does not assume or continue such outstanding
Options or substitute similar stock options for such outstanding Options, then
with respect to any other Options that have not been assumed, continued or
substituted and that are held by persons other than Active Optionholders, the
vesting of such Options (and, if applicable, the time at which such Options may
be exercised) shall not be accelerated unless otherwise provided in Section
11(d) or in a written agreement between the Company or any Affiliate and the
holder of such Options, and such Options shall terminate if not exercised (if
applicable) prior to the effective time of the Corporate Transaction; provided,
however, that any reacquisition or repurchase rights held by the Company with
respect to such Options shall not terminate and may continue to be exercised
notwithstanding the Corporate Transaction.

                                      12.
<PAGE>

            (iv) PAYMENT FOR OPTIONS IN LIEU OF EXERCISE. Notwithstanding the
foregoing, in the event an Option will terminate if not exercised prior to the
effective time of a Corporate Transaction, the Board may provide, in its sole
discretion, that the holder of such Option may not exercise such Option but will
receive a payment, in such form as may be determined by the Board, equal in
value to the excess, if any, of (i) the value of the property the holder of the
Option would have received upon the exercise of the Option, over (ii) the
exercise price payable by the Optionholder in connection with such exercise.

      (d) CHANGE IN CONTROL. In the event that an Optionholder is required to
resign his or her position as a Non-Employee Director as a condition of a Change
in Control, the outstanding Options of such Optionholder shall become fully
vested and exercisable immediately prior to the effectiveness of such
resignation (and contingent upon the effectiveness of the Change in Control).

      (e) PARACHUTE PAYMENTS.

            (i) If the acceleration of the vesting and exercisability of Options
provided for in Sections 11(c) and 11(d), together with payments and other
benefits of an Optionholder, (collectively, the "PAYMENT") (i) constitute a
"parachute payment" within the meaning of Section 280G of the Code, or any
comparable successor provisions, and (ii) but for this Section 11(e) would be
subject to the excise tax imposed by Section 4999 of the Code, or any comparable
successor provisions (the "EXCISE TAX"), then such Payment shall be either (1)
provided to such Optionholder in full, or (2) provided to such Optionholder as
to such lesser extent that would result in no portion of such Payment being
subject to the Excise Tax, whichever of the foregoing amounts, when taking into
account applicable federal, state, local and foreign income and employment
taxes, the Excise Tax, and any other applicable taxes, results in the receipt by
such Optionholder, on an after-tax basis, of the greatest amount of the Payment,
notwithstanding that all or some portion of the Payment may be subject to the
Excise Tax.

            (ii) Unless the Company and such Optionholder otherwise agree in
writing, any determination required under this Section 11(e) shall be made in
writing in good faith by the Accountant. If a reduction in the Payment is to be
made as provided above, reductions shall occur in the following order unless the
Optionholder elects in writing a different order (provided, however, that such
election shall be subject to Company approval if made on or after the date that
triggers the Payment or a portion thereof): (i) reduction of cash payments; (ii)
cancellation of accelerated vesting of Options; and (iii) reduction of other
benefits paid to the Optionholder. If acceleration of vesting of Options is to
be reduced, such acceleration of vesting shall be cancelled in the reverse order
of date of grant of Options (i.e., the earliest granted Option cancelled last)
unless the Optionholder elects in writing a different order for cancellation.

            (iii) For purposes of making the calculations required by this
Section 11(e), the Accountant may make reasonable assumptions and approximations
concerning applicable taxes and may rely on reasonable, good faith
interpretations concerning the application of the Code and other applicable
legal authority. The Company and the Optionholder shall furnish to the
Accountant such information and documents as the Accountant may reasonably
request in order to make such a determination. The Company shall bear all costs
the Accountant may reasonably incur in connection with any calculations
contemplated by this Section 11(e).

                                      13.
<PAGE>

            (iv) If, notwithstanding any reduction described above, the Internal
Revenue Service (the "IRS") determines that the Optionholder is liable for the
Excise Tax as a result of the Payment, then the Optionholder shall be obligated
to pay back to the Company, within thirty (30) days after a final IRS
determination or, in the event that the Optionholder challenges the final IRS
determination, a final judicial determination, a portion of the Payment (the
"REPAYMENT AMOUNT"). The Repayment Amount with respect to the Payment shall be
the smallest such amount, if any, as shall be required to be paid to the Company
so that the Optionholder's net after-tax proceeds with respect to the Payment
(after taking into account the payment of the Excise Tax and all other
applicable taxes imposed on the Payment) shall be maximized. The Repayment
Amount with respect to the Payment shall be zero if a Repayment Amount of more
than zero would not result in the Optionholder's net after-tax proceeds with
respect to the Payment being maximized. If the Excise Tax is not eliminated
pursuant to this paragraph, the Optionholder shall pay the Excise Tax.

            (v) Notwithstanding any other provision of this Section 11(e), if
(i) there is a reduction in the Payment as described above, (ii) the IRS later
determines that the Optionholder is liable for the Excise Tax, the payment of
which would result in the maximization of the Optionholder's net after-tax
proceeds of the Payment (calculated as if the Payment had not previously been
reduced), and (iii) the Optionholder pays the Excise Tax, then the Company shall
pay or otherwise provide to the Optionholder that portion of the Payment that
was reduced pursuant to this Section 11(e) contemporaneously or as soon as
administratively possible after the Optionholder pays the Excise Tax so that the
Optionholder's net after-tax proceeds with respect to the Payment are maximized.

            (vi) If the Optionholder either (i) brings any action to enforce
rights pursuant to this Section 11(e), or (ii) defends any legal challenge to
his or her rights under this Section 11(e), the Optionholder shall be entitled
to recover attorneys' fees and costs incurred in connection with such action,
regardless of the outcome of such action; provided, however, that if such action
is commenced by the Optionholder, the court finds that the action was brought in
good faith.

12. AMENDMENT OF THE PLAN AND OPTIONS.

      (a) AMENDMENT OF PLAN. Subject to the limitations, if any, of applicable
law, the Board, at any time and from time to time, may amend the Plan. However,
except as provided in Section 11(a) relating to Capitalization Adjustments, no
amendment shall be effective unless approved by the stockholders of the Company
to the extent stockholder approval is necessary to satisfy applicable law.

      (b) STOCKHOLDER APPROVAL. The Board, in its sole discretion, may submit
any other amendment to the Plan for stockholder approval.

      (c) NO IMPAIRMENT OF RIGHTS. Rights under any Option granted before
amendment of the Plan shall not be impaired by any amendment of the Plan unless
(i) the Company requests the consent of the affected Optionholder, and (ii) such
Optionholder consents in writing.

                                      14.
<PAGE>

      (d) AMENDMENT OF OPTIONS. The Board, at any time and from time to time,
may amend the terms of any one or more Options; provided, however, that the
rights under any Option shall not be impaired by any such amendment unless (i)
the Company requests the consent of the Optionholder, and (ii) the Optionholder
consents in writing.

13. TERMINATION OR SUSPENSION OF THE PLAN.

      (a) PLAN TERM. The Board may suspend or terminate the Plan at any time. No
Options may be granted under the Plan while the Plan is suspended or after it is
terminated.

      (b) NO IMPAIRMENT OF RIGHTS. Suspension or termination of the Plan shall
not impair rights and obligations under any Option granted while the Plan is in
effect except with the written consent of the Optionholder.

14. EFFECTIVE DATE OF PLAN.

      The Plan shall become effective on the IPO Date, but no Option shall be
exercised unless and until the Plan has been approved by the stockholders of the
Company, which approval shall be within twelve (12) months before or after the
date the Plan is adopted by the Board.

15. CHOICE OF LAW.

      The law of the state of Delaware shall govern all questions concerning the
construction, validity and interpretation of this Plan, without regard to such
state's conflict of laws rules.

                                      15.
<PAGE>

                                  STENTOR, INC.
                 2005 NON-EMPLOYEE DIRECTORS' STOCK OPTION PLAN

                                OPTION AGREEMENT
                           (NONSTATUTORY STOCK OPTION)

      Pursuant to your Option Grant Notice ("GRANT NOTICE") and this Option
Agreement, Stentor, Inc. (the "COMPANY") has granted you an option under its
2005 Non-Employee Directors' Stock Option Plan (the "PLAN") to purchase the
number of shares of the Company's Common Stock indicated in your Grant Notice at
the exercise price indicated in your Grant Notice. Defined terms not explicitly
defined in this Option Agreement but defined in the Plan shall have the same
definitions as in the Plan.

      The details of your option are as follows:

      1. VESTING. Subject to the limitations contained herein, your option will
vest as provided in your Grant Notice, provided that vesting will cease upon the
termination of your Continuous Service.

      2. NUMBER OF SHARES AND EXERCISE PRICE. The number of shares of Common
Stock subject to your option and your exercise price per share referenced in
your Grant Notice may be adjusted from time to time for Capitalization
Adjustments.

      3. EXERCISE PRIOR TO VESTING ("EARLY EXERCISE"). If permitted in your
Grant Notice (i.e., the "Exercise Schedule" indicates that "Early Exercise" of
your option is permitted) and subject to the provisions of your option, you may
elect at any time that is both (i) during the period of your Continuous Service
and (ii) during the term of your option, to exercise all or part of your option,
including the nonvested portion of your option; provided, however, that:

            (a) a partial exercise of your option shall be deemed to cover first
vested shares of Common Stock and then the earliest vesting installment of
unvested shares of Common Stock;

            (b) any shares of Common Stock so purchased from installments that
have not vested as of the date of exercise shall be subject to the purchase
option in favor of the Company as described in the Company's form of Early
Exercise Stock Purchase Agreement; and

            (c) you shall enter into the Company's form of Early Exercise Stock
Purchase Agreement with a vesting schedule that will result in the same vesting
as if no early exercise had occurred.

      4. METHOD OF PAYMENT. Payment of the exercise price is due in full upon
exercise of all or any part of your option. You may elect to make payment of the
exercise price in cash or by check or in any other manner PERMITTED BY YOUR
GRANT NOTICE, which may include one or more of the following:

                                       1.
<PAGE>

            (a) In the Company's sole discretion at the time your option is
exercised and provided that at the time of exercise the Common Stock is publicly
traded and quoted regularly in The Wall Street Journal, pursuant to a program
developed under Regulation T as promulgated by the Federal Reserve Board that,
prior to the issuance of Common Stock, results in either the receipt of cash (or
check) by the Company or the receipt of irrevocable instructions to pay the
aggregate exercise price to the Company from the sales proceeds.

            (b) In the Company's sole discretion at the time your option is
exercised and provided that at the time of exercise the Common Stock is publicly
traded and quoted regularly in The Wall Street Journal, by delivery to the
Company (either by actual delivery or attestation) of already-owned shares of
Common Stock either that you have held for the period required to avoid a charge
to the Company's reported earnings (generally six (6) months) or that you did
not acquire, directly or indirectly from the Company, that are owned free and
clear of any liens, claims, encumbrances or security interests, and that are
valued at Fair Market Value on the date of exercise. "Delivery" for these
purposes, in the sole discretion of the Company at the time you exercise your
option, shall include delivery to the Company of your attestation of ownership
of such shares of Common Stock in a form approved by the Company.
Notwithstanding the foregoing, you may not exercise your option by tender to the
Company of Common Stock to the extent such tender would violate the provisions
of any law, regulation or agreement restricting the redemption of the Company's
stock.

      5. WHOLE SHARES. You may exercise your option only for whole shares of
Common Stock.

      6. SECURITIES LAW COMPLIANCE. Notwithstanding anything to the contrary
contained herein, you may not exercise your option unless the shares of Common
Stock issuable upon such exercise are then registered under the Securities Act
or, if such shares of Common Stock are not then so registered, the Company has
determined that such exercise and issuance would be exempt from the registration
requirements of the Securities Act. The exercise of your option also must comply
with other applicable laws and regulations governing your option, and you may
not exercise your option if the Company determines that such exercise would not
be in material compliance with such laws and regulations.

      7. TERM. You may not exercise your option before the commencement or after
the expiration of its term. The term of your option commences on the Date of
Grant and expires upon the earliest of the following:

            (a) three (3) months after the termination of your Continuous
Service for any reason other than your Disability or death or upon a Change in
Control, provided that if during any part of such three (3) month period your
option is not exercisable solely because of the condition set forth in Section
6, your option shall not expire until the earlier of the Expiration Date or
until it shall have been exercisable for an aggregate period of three (3) months
after the termination of your Continuous Service;

            (b) twelve (12) months after the termination of your Continuous
Service due to your Disability;

                                       2.
<PAGE>

            (c) eighteen (18) months after your death if you die either during
your Continuous Service or within three (3) months after your Continuous Service
terminates;

            (d) twelve (12) months after the effective date of a Change in
Control if termination occurs as of, or within twelve (12) months following the
effective date of such a Change in Control;

            (e) the Expiration Date indicated in your Grant Notice; or

            (f) the day before the tenth (10th) anniversary of the Date of
Grant.

      8. EXERCISE.

            (a) You may exercise the vested portion of your option (and the
unvested portion of your option if your Grant Notice so permits) during its term
by delivering a Notice of Exercise (in a form designated by the Company)
together with the exercise price to the Secretary of the Company, or to such
other person as the Company may designate, during regular business hours,
together with such additional documents as the Company may then require.

            (b) By exercising your option you agree that, as a condition to any
exercise of your option, the Company may require you to enter into an
arrangement providing for the payment by you to the Company of any tax
withholding obligation of the Company arising by reason of (i) the exercise of
your option, (ii) the lapse of any substantial risk of forfeiture to which the
shares of Common Stock are subject at the time of exercise, or (iii) the
disposition of shares of Common Stock acquired upon such exercise.

      9. TRANSFERABILITY. Your option is transferable only by will or by the
laws of descent and distribution and is exercisable only by you during your
lifetime. However, you may transfer your option for no consideration upon
written consent of the Board (i) if, at the time of transfer, a Form S-8
registration statement under the Securities Act is available for the issuance of
shares by the Company upon the exercise of such transferred option or (ii) the
transfer is to your employer at the time of transfer or an affiliate of your
employer at the time of transfer. Any such transfer is subject to such limits as
the Board may establish, and subject to the transferee agreeing to remain
subject to all the terms and conditions applicable to your option prior to such
transfer. The forgoing right to transfer your option shall apply to the right to
consent to amendments to the Option Agreement for such option. In addition,
until you transfers the option, you may, by delivering written notice to the
Company, in a form provided by or otherwise satisfactory to the Company,
designate a third party who, in the event of your death, shall thereafter be
entitled to exercise your option.

      10. OPTION NOT A SERVICE CONTRACT. Your option is not an employment or
service contract, and nothing in your option shall be deemed to create in any
way whatsoever any obligation on your part to continue in the employ of the
Company or an Affiliate, or of the Company or an Affiliate to continue your
employment. In addition, nothing in your option shall obligate the Company or an
Affiliate, their respective stockholders, Boards of Directors, Officers or
Employees to continue any relationship that you might have as a Director or
Consultant for the Company or an Affiliate.

                                       3.
<PAGE>

      11. WITHHOLDING OBLIGATIONS.

            (a) At the time you exercise your option, in whole or in part, or at
any time thereafter as requested by the Company, you hereby authorize
withholding from payroll and any other amounts payable to you, and otherwise
agree to make adequate provision for (including by means of a "cashless
exercise" pursuant to a program developed under Regulation T as promulgated by
the Federal Reserve Board to the extent permitted by the Company), any sums
required to satisfy the federal, state, local and foreign tax withholding
obligations of the Company or an Affiliate, if any, which arise in connection
with the exercise of your option.

            (b) Upon your request and subject to approval by the Company, in its
sole discretion, and compliance with any applicable legal conditions or
restrictions, the Company may withhold from fully vested shares of Common Stock
otherwise issuable to you upon the exercise of your option a number of whole
shares of Common Stock having a Fair Market Value, determined by the Company as
of the date of exercise, not in excess of the minimum amount of tax required to
be withheld by law (or such lower amount as may be necessary to avoid variable
award accounting). If the date of determination of any tax withholding
obligation is deferred to a date later than the date of exercise of your option,
share withholding pursuant to the preceding sentence shall not be permitted
unless you make a proper and timely election under Section 83(b) of the Code,
covering the aggregate number of shares of Common Stock acquired upon such
exercise with respect to which such determination is otherwise deferred, to
accelerate the determination of such tax withholding obligation to the date of
exercise of your option. Notwithstanding the filing of such election, shares of
Common Stock shall be withheld solely from fully vested shares of Common Stock
determined as of the date of exercise of your option that are otherwise issuable
to you upon such exercise. Any adverse consequences to you arising in connection
with such share withholding procedure shall be your sole responsibility.

            (c) You may not exercise your option unless the tax withholding
obligations of the Company and/or any Affiliate are satisfied. Accordingly, you
may not be able to exercise your option when desired even though your option is
vested, and the Company shall have no obligation to issue a certificate for such
shares of Common Stock or release such shares of Common Stock from any escrow
provided for herein unless such obligations are satisfied.

      12. NOTICES. Any notices provided for in your option or the Plan shall be
given in writing and shall be deemed effectively given upon receipt or, in the
case of notices delivered by mail by the Company to you, five (5) days after
deposit in the United States mail, postage prepaid, addressed to you at the last
address you provided to the Company.

      13. GOVERNING PLAN DOCUMENT. Your option is subject to all the provisions
of the Plan, the provisions of which are hereby made a part of your option, and
is further subject to all interpretations, amendments, rules and regulations,
which may from time to time be promulgated and adopted pursuant to the Plan. In
the event of any conflict between the provisions of your option and those of the
Plan, the provisions of the Plan shall control.

                                       4.

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