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Exhibit 10.18  

 
 

DIVX, INC.
  2006 EMPLOYEE STOCK PURCHASE PLAN    
    
    ADOPTED BY THE BOARD OF DIRECTORS: JULY 27, 2006
  APPROVED BY
STOCKHOLDERS:                  , 2006    
    

1.     PURPOSE.  

        (a)   The purpose of this Plan is to provide a means by which Employees of the Company and certain designated Related
Corporations may be given an opportunity to purchase shares of the Common Stock of the Company. 

        (b)   The Company, by means of the Plan, seeks to secure and retain the services of current and new Employees and to provide
incentives for such persons to exert maximum efforts for the success of the Company and its Related Corporations. 

        (c)   The Company intends that the Purchase Rights be considered options issued under an Employee Stock Purchase Plan. 

2.     DEFINITIONS.  

        As used in the Plan and any Offering, unless otherwise specified, the following terms have the meanings set forth below: 

        (a)   "Board" means the Board of Directors of the Company. 

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

        (c)   "Committee" means a committee appointed by the Board in accordance with Section 3(c) of
the Plan. 

        (d)   "Common Stock" means the common stock of the Company. 

        (e)   "Company" means DivX, Inc., a Delaware corporation. 

        (f)    "Contributions" means the payroll deductions and other additional payments specifically provided
for in the Offering that a Participant contributes to fund the exercise of a Purchase Right. A Participant may make additional payments into his or her account if specifically provided for in the
Offering, and then only if the Participant has not already had the maximum permitted amount withheld through payroll deductions during the Offering. 

        (g)   "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 

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the
merger, consolidation or similar transaction into other property, whether in the form of securities, cash or otherwise. 

        (h)   "Director" means a member of the Board. 

        (i)    "Earnings" of an Employee with respect to any Offering has the meaning defined in such Offering. 

        (j)    "Eligible Employee" means an Employee who meets the requirements set forth in the Offering for
eligibility to participate in the Offering, provided that such Employee also meets the requirements for eligibility to participate set forth in the Plan. 

        (k)   "Employee" means any person, including Officers and Directors, who is employed for purposes of
Section 423(b)(4) of the Code by the Company or a Related Corporation. Neither service as a Director nor payment of a director's fee shall be sufficient to make an individual an Employee of the
Company or a Related Corporation. 

        (l)    "Employee Stock Purchase Plan" means a plan that grants Purchase Rights intended to be options
issued under an "employee stock purchase plan," as that term is defined in Section 423(b) of the Code. 

        (m)  "Exchange Act" means the Securities Exchange Act of 1934, as amended. 

        (n)   "Fair Market Value" means the value of a security, as determined in good faith by the Board. If
the security is listed on any established stock exchange or traded on the Nasdaq National Market or the Nasdaq SmallCap Market, the Fair Market Value of the security, unless otherwise determined by
the Board, shall be the closing sales price (rounded up where necessary to the nearest whole cent) for such security (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 relevant security of the Company) on the relevant determination date, 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 security 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. 

        (o)   "Initial Offering" means the first Offering under this Plan. 

        (p)   "IPO Date" means the date of the underwriting agreement entered into 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. 

        (q)   "Offering" means the grant of Purchase Rights to purchase shares of Common Stock under the Plan
to Eligible Employees. 

        (r)   "Offering Date" means a date selected by the Board for an Offering to commence. 

        (s)   "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. 

        (t)    "Participant" means an Eligible Employee who holds an outstanding Purchase Right granted pursuant
to the Plan. 

        (u)   "Plan" means this DivX, Inc. 2006 Employee Stock Purchase Plan. 

        (v)   "Purchase Date" means one or more dates during an Offering established by the Board on which
Purchase Rights shall be exercised and as of which purchases of shares of Common Stock shall be carried out in accordance with such Offering. 

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        (w)  "Purchase Period" means a period of time specified within an Offering beginning on the Offering
Date or on the next day following a Purchase Date within an Offering and ending on a Purchase Date. An Offering may consist of one or more Purchase Periods. 

        (x)   "Purchase Right" means an option to purchase shares of Common Stock granted pursuant to the Plan. 

        (y)   "Related Corporation" means any parent corporation or subsidiary corporation, whether now or
hereafter existing, as those terms are defined in Sections 424(e) and (f), respectively, of the Code. The Board shall have the authority to determine the time or times at which "parent corporation" or
"subsidiary corporation" status is determined within the forgoing definition. 

        (z)   "Securities Act" means the Securities Act of 1933, as amended. 

        (aa) "Trading Day" means any day on which the exchange(s) or market(s) on which shares of Common
Stock are listed, whether it be an established stock exchange, the Nasdaq National Market, the Nasdaq SmallCap Market or otherwise, is open for trading. 

3.     ADMINISTRATION.  

        (a)   The Board shall administer the Plan unless and until the Board delegates administration to a Committee, as provided in
Section 3(c). Whether or not the Board has delegated administration, the Board shall have the final power to determine all questions of policy and expediency that may arise in the
administration of the Plan. 

        (b)   The Board (or the Committee) shall have the power, subject to, and within the limitations of, the express provisions of
the Plan: 

        (i)    To determine when and how Purchase Rights to purchase shares of Common Stock shall be granted and the provisions of each
Offering of such Purchase Rights (which need not be identical). 

        (ii)   To designate from time to time which Related Corporations of the Company shall be eligible to participate in the Plan. 

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

        (iv)  To amend the Plan as provided in Section 15. 

        (v)   Generally, to exercise such powers and to perform such acts as it deems necessary or expedient to promote the best
interests of the Company and its Related Corporations and to carry out the intent that the Plan be treated as an Employee Stock Purchase Plan. 

        (vi)  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)   The Board may delegate administration of the Plan to a Committee of the Board composed of one (1) or more members
of the Board. If administration of the Plan is delegated to a Committee, the Committee shall have, in connection with the administration of the Plan, the powers theretofore possessed by the Board,
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 abolish the Committee at any time and revest in
the Board some or all of the powers previously delegated. If administration is 

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delegated
to a Committee, references to the Board in this Plan and in the Offering document shall thereafter be deemed to be to the Board or the Committee, as the case may be. 

        (d)   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 OF COMMON STOCK SUBJECT TO THE PLAN.  

        (a)   Subject to the provisions of Section 14(a) relating to adjustments upon changes in Common Stock, the shares of
Common stock that may be sold pursuant to Purchase Rights granted under the Plan shall not exceed in the aggregate one million one hundred thousand (1,100,000) shares of Common Stock (such number to
be adjusted to give effect to any forward or reverse split of the Common Stock that may be implemented in connection with the Company's initial public offering), plus an annual increase to be added on
the first day of each Company fiscal year, beginning in 2007 and ending in (and including) 2016, equal to the least of: (i) one and a half percent (1.5%) of the total number of shares of Common
Stock outstanding on December 31st of the preceding year (rounded to the nearest whole share), (ii) three million (3,000,000) shares of Common Stock (such number to be adjusted to give
effect to any forward or reverse split of the Common Stock that may be implemented in connection with the Company's initial public offering), or (iii) an amount determined by the Board or a
Committee. If any Purchase Right granted under the Plan shall for any reason terminate without having been exercised, the shares of Common Stock not purchased under such Purchase Right shall again
become available for issuance under the Plan. 

        (b)   The Common Stock subject to the Plan may be unissued shares or reacquired shares, bought on the market or otherwise. 

5.     GRANT OF PURCHASE RIGHTS; OFFERING.  

        (a)   The Board may from time to time grant or provide for the grant of Purchase Rights to purchase shares of Common Stock
under the Plan to Eligible Employees in an Offering (consisting of one or more Purchase Periods) on an Offering Date or Offering Dates selected by the Board. Each Offering shall be in such form and
shall contain such terms and conditions as the Board shall deem appropriate, which shall comply with the requirements of Section 423(b)(5) of the Code that all Employees granted Purchase Rights
shall have the same rights and privileges. The terms and conditions of an Offering shall be incorporated by reference into the Plan and treated as part of the Plan. The provisions of separate
Offerings need not be identical, but each Offering shall include (through incorporation of the provisions of this Plan by reference in the document comprising the Offering or otherwise) the period
during which the Offering shall be effective, which period shall not exceed twenty-seven (27) months beginning with the Offering Date, and the substance of the provisions contained in Sections
6 through 9, inclusive. 

        (b)   If a Participant has more than one Purchase Right outstanding under the Plan, unless he or she otherwise indicates in
agreements or notices delivered hereunder: (i) each agreement or notice delivered by that Participant shall be deemed to apply to all of his or her Purchase Rights under the Plan, and
(ii) a Purchase Right with a lower exercise price (or an earlier-granted Purchase Right, if different Purchase Rights have identical exercise prices) shall be exercised to the fullest possible
extent before a Purchase Right with a higher exercise price (or a later-granted Purchase Right if different Purchase Rights have identical exercise prices) shall be exercised. 

6.     ELIGIBILITY.  

        (a)   Purchase Rights may be granted only to Employees of the Company or, as the Board may designate as provided in
Section 3(b), to Employees of a Related Corporation. Except as provided in Section 6(b), an Employee shall not be eligible to be granted Purchase Rights under the Plan unless, 

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on
the Offering Date, such Employee has been in the employ of the Company or the Related Corporation, as the case may be, for such continuous period preceding such Offering Date as the Board may
require, but in no event shall the required period of continuous employment be greater than two (2) years. In addition, the Board may provide that no Employee shall be eligible to be granted
Purchase Rights under the Plan unless, on the Offering Date, such Employee's customary employment with the Company or the Related Corporation is more than twenty (20) hours per week and/or more
than five (5) months per calendar year. 

        (b)   No Employee shall be eligible for the grant of any Purchase Rights under the Plan if, immediately after any such Purchase
Rights are granted, such Employee owns stock possessing five percent (5%) or more of the total combined voting power or value of all classes of stock of the Company or of any Related Corporation. For
purposes of this Section 6(b), the rules of Section 424(d) of the Code shall apply in determining the stock ownership of any Employee, and stock which such Employee may purchase under
all outstanding Purchase Rights and options (whether vested or unvested) shall be treated as stock owned by such Employee. 

        (c)   As specified by Section 423(b)(8) of the Code, an Eligible Employee may be granted Purchase Rights under the Plan
only if such Purchase Rights, together with any other rights granted under all Employee Stock Purchase Plans of the Company and any Related Corporations, do not permit such Eligible Employee's rights
to purchase stock of the Company or any Related Corporation to accrue at a rate which exceeds twenty five thousand dollars ($25,000) of Fair Market Value of such stock (determined at the time such
rights are granted, and which, with respect to the Plan, shall be determined as of their respective Offering Dates) for each calendar year in which such rights are outstanding at any time. 

        (d)   Officers of the Company and any designated Related Corporation, if they are otherwise Eligible Employees, shall be
eligible to participate in Offerings under the Plan. Notwithstanding the foregoing, the Board may provide in an Offering that Employees who are highly compensated Employees within the meaning of
Section 423(b)(4)(D) of the Code shall not be eligible to participate. 

7.     PURCHASE RIGHTS; PURCHASE PRICE.  

        (a)   On each Offering Date, each Eligible Employee, pursuant to an Offering made under the Plan, shall be granted a Purchase
Right to purchase up to that number of shares of Common Stock purchasable either with a percentage or with a maximum dollar amount, as designated by the Board, but in either case not exceeding fifteen
percent (15%), of such Employee's Earnings (as defined by the Board in each Offering) during the period that begins on the Offering Date (or such later date as the Board determines for a particular
Offering) and ends on the date stated in the Offering, which date shall be no later than the end of the Offering. 

        (b)   The Board shall establish one (1) or more Purchase Dates during an Offering as of which Purchase Rights granted
pursuant to that Offering shall be exercised and purchases of shares of Common Stock shall be carried out in accordance with such Offering. 

        (c)   In connection with each Offering made under the Plan, the Board may specify a maximum number of shares of Common Stock
that may be purchased by any Participant on any Purchase Date during such Offering. In connection with each Offering made under the Plan, the Board may specify a maximum aggregate number of shares of
Common Stock that may be purchased by all Participants pursuant to such Offering. In addition, in connection with each Offering that contains more than one Purchase Date, the Board may specify a
maximum aggregate number of shares of Common Stock that may be purchased by all Participants on any Purchase Date under the Offering. If the aggregate purchase of shares of Common Stock issuable upon
exercise of Purchase Rights granted under the Offering would exceed any such maximum aggregate number, then, in the absence of any Board action 

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otherwise,
a pro rata allocation of the shares of Common Stock available shall be made in as nearly a uniform manner as shall be practicable and equitable. 

        (d)   The purchase price of shares of Common Stock acquired pursuant to Purchase Rights shall be not less than the lesser of: 

        (i)    an amount equal to eighty-five percent (85%) of the Fair Market Value of the shares of Common Stock on the
Offering Date; or 

        (ii)   an amount equal to eighty-five percent (85%) of the Fair Market Value of the shares of Common Stock on the
applicable Purchase Date. 

8.     PARTICIPATION; WITHDRAWAL; TERMINATION.  

        (a)   A Participant may elect to authorize payroll deductions pursuant to an Offering under the Plan by completing and
delivering to the Company, within the time specified in the Offering, an enrollment form (in such form as the Company may provide). Each such enrollment form shall authorize an amount of Contributions
expressed as a percentage of the submitting Participant's Earnings during the Offering (not to exceed the maximum percentage specified by the Board). Each Participant's Contributions shall remain the
property of the Participant at all times prior to the purchase of Common Stock, but such Contributions may be commingled with the assets of the Company and used for general corporate purposes except
where applicable law requires that Contributions be deposited with an independent third party. To the extent provided in the Offering, a Participant may begin making Contributions after the beginning
of the Offering. To the extent provided in the Offering, a Participant may thereafter reduce (including to zero) or increase his or her Contributions. To the extent specifically provided in the
Offering, in addition to making Contributions by payroll deductions, a Participant may make Contributions through the payment by cash or check prior to a specified Purchase Date of the Offering. 

        (b)   During an Offering, a Participant may cease making Contributions and withdraw from the Offering by delivering to the
Company a notice of withdrawal in such form as the Company may provide. Such withdrawal may be elected at any time prior to the end of the Offering, except as provided otherwise in the Offering. Upon
such withdrawal from the Offering by a Participant, the Company shall distribute to such Participant all of his or her accumulated Contributions (reduced to the extent, if any, such Contributions have
been used to acquire shares of Common Stock for the Participant) under the Offering, and such Participant's Purchase Right in that Offering shall thereupon terminate. A Participant's withdrawal from
an Offering shall have no effect upon such Participant's eligibility to participate in any other Offerings under the Plan, but such Participant shall be required to deliver a new enrollment form in
order to participate in subsequent Offerings. 

        (c)   Purchase Rights granted pursuant to any Offering under the Plan shall terminate immediately upon a Participant ceasing to
be an Employee for any reason or for no reason (subject to any post-employment participation period required by law) or other lack of eligibility. The Company shall distribute to such
terminated or otherwise ineligible Employee all of his or her accumulated Contributions (reduced to the extent, if any, such Contributions have been used to acquire shares of Common Stock for the
terminated or otherwise ineligible Employee) under the Offering, without interest. 

        (d)   Purchase Rights shall not be transferable by a Participant otherwise than by will, the laws of descent and distribution,
or by a beneficiary designation as provided in Section 13. During a Participant's lifetime, Purchase Rights shall be exercisable only by such Participant. 

        (e)   Unless otherwise specified in an Offering, the Company shall have no obligation to pay interest on Contributions. 

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   9.     EXERCISE.  

        (a)   On each Purchase Date during an Offering, each Participant's accumulated Contributions (without any increase for
interest) shall be applied to the purchase of shares of Common Stock up to the maximum number of shares of Common Stock permitted pursuant to the terms of the Plan and the applicable Offering, at the
purchase price specified in the Offering. No fractional shares shall be issued upon the exercise of Purchase Rights unless specifically provided for in the Offering. 

        (b)   If any amount of accumulated Contributions remains in a Participant's account after the purchase of shares of Common
Stock and such remaining amount is less than the amount required to purchase one share of Common Stock on the final Purchase Date of an Offering, then such remaining amount shall be held in such
Participant's account for the purchase of shares of Common Stock under the next Offering under the Plan, unless such Participant withdraws from such next Offering, as provided in Section 8(b),
or is not eligible to participate in such Offering, as provided in Section 6, in which case such amount shall be distributed to such Participant after the final Purchase Date, without interest.
If the amount of Contributions remaining in a Participant's account after the purchase of shares of Common Stock is at least equal to the amount required to purchase one (1) whole share of
Common Stock on the final Purchase Date of the Offering, then such remaining amount shall be distributed in full to such Participant at the end of the Offering. 

        (c)   No Purchase Rights may be exercised to any extent unless the shares of Common Stock to be issued upon such exercise under
the Plan are covered by an effective registration statement pursuant to the Securities Act and the Plan is in material compliance with all laws applicable to the Plan. If on a Purchase Date during any
Offering hereunder the shares of Common Stock are not so registered or the Plan is not in such compliance, no Purchase Rights or any Offering shall be exercised on such Purchase Date, and the Purchase
Date shall be delayed until the shares of Common Stock are subject to such an effective registration statement and the Plan is in such compliance, except that the Purchase Date shall not be delayed
more than twelve (12) months and the Purchase Date shall in no event be more than twenty-seven (27) months from the Offering Date. If, on the Purchase Date under any Offering hereunder,
as delayed to the maximum extent permissible, the shares of Common Stock are not registered and the Plan is not in such compliance, no Purchase Rights or any Offering shall be exercised and all
Contributions accumulated during the Offering (reduced to the extent, if any, such Contributions have been used to acquire shares of Common Stock) shall be distributed to the Participants, without
interest. 

10.   COVENANTS OF THE COMPANY.  

        The Company shall seek to obtain from each federal, state, foreign or other regulatory commission or agency having jurisdiction over the Plan such authority as
may be required to issue and sell shares of Common Stock upon exercise of the Purchase Rights. If, after commercially 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 shares of Common Stock under the Plan, the Company shall be relieved from any
liability for failure to issue and sell shares of Common Stock upon exercise of such Purchase Rights unless and until such authority is obtained. 

11.   USE OF PROCEEDS FROM SHARES OF COMMON STOCK.  

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

12.   RIGHTS AS A STOCKHOLDER.  

        A Participant shall not be deemed to be the holder of, or to have any of the rights of a holder with respect to, shares of Common Stock subject to Purchase Rights
unless and until the Participant's 

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shares
of Common Stock acquired upon exercise of Purchase Rights are recorded in the books of the Company (or its transfer agent). 

13.   DESIGNATION OF BENEFICIARY.  

        (a)   A Participant may file a written designation of a beneficiary who is to receive any shares of Common Stock and/or
cash, if any, from the Participant's account under the Plan in the event of such Participant's death subsequent to the end of an Offering but prior to delivery to the Participant of such shares of
Common Stock or cash. In addition, a Participant may file a written designation of a beneficiary who is to receive any cash from the Participant's account under the Plan in the event of such
Participant's death during an Offering. Any such designation shall be on a form provided by or otherwise acceptable to the Company. 

        (b)   The Participant may change such designation of beneficiary at any time by written notice to the Company. In the event of
the death of a Participant and in the absence of a beneficiary validly designated under the Plan who is living at the time of such Participant's death, the Company shall deliver such shares of Common
Stock and/or cash to the executor or administrator of the estate of the Participant, or if no such executor or administrator has been appointed (to the knowledge of the Company), the Company, in its
sole discretion, may deliver such shares of Common Stock and/or cash to the spouse or to any one or more dependents or relatives of the Participant, or if no spouse, dependent or relative is known to
the Company, then to such other person as the Company may designate. 

14.   ADJUSTMENTS UPON CHANGES IN SECURITIES; CORPORATE TRANSACTIONS.  

        (a)   If any change is made in the shares of Common Stock, subject to the Plan, or subject to any Purchase Right, 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), the Plan shall be
appropriately adjusted in the type(s), class(es) and maximum number of shares of Common Stock subject to the Plan pursuant to Section 4, and the outstanding Purchase Rights shall be
appropriately adjusted in the type(s), class(es), number of shares and purchase limits of such outstanding Purchase Rights. 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 not involving the receipt of consideration by
the Company.") 

        (b)   In the event of a Corporate Transaction, then: (i) any surviving or acquiring corporation may continue or assume
Purchase Rights outstanding under the Plan or may substitute similar rights (including a right to acquire the same consideration paid to stockholders in the Corporate Transaction) for those
outstanding under the Plan, or (ii) if any surviving or acquiring corporation does not continue or assume such Purchase Rights or does not substitute similar rights for Purchase Rights
outstanding under the Plan, then, the Participants' accumulated Contributions shall be used to purchase shares of Common Stock within ten (10) business days prior to the Corporate Transaction
under the ongoing Offering, and the Participants' Purchase Rights under the ongoing Offering shall terminate immediately after such purchase. 

15.   AMENDMENT OF THE PLAN.  

        (a)   The Board at any time, and from time to time, may amend the Plan. However, stockholder approval shall be sought to the
extent necessary and required for the Plan to satisfy the requirements of Section 423 of the Code or other applicable laws or regulations. 

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        (b)   Without stockholder consent and without regard to whether any participant rights may be considered to have been
"impaired," the Board (or Committee) shall be entitled to shorten the length of any ongoing Offerings, limit the frequency and/or number of changes in the amount withheld during an Offering, establish
the exchange ratio applicable to amounts withheld in a currency other than U.S. dollars, permit payroll withholdings in excess of the amount designed by a participant in order to adjust for delays or
mistakes in the Company's processing of properly completed withholding elections, establish reasonable waiting and adjustment periods and/or accounting and crediting procedures to ensure that amounts
applied toward the purchase of Common Stock for each participant properly correspond with amounts withheld from the participant's Compensation, and establish such other limitations or procedures as
the Board (or the Committee) determines in its sole discretion advisable and which are consistent with the Plan. 

        (c)   The rights and obligations under any Purchase Rights granted before amendment of the Plan shall not be impaired by any
amendment of the Plan except: (i) with the consent of the person to whom such Purchase Rights were granted, (ii) as necessary to comply with any laws or governmental regulations
(including, without limitation, the provisions of the Code and the regulations promulgated thereunder relating to Employee Stock Purchase Plans), or (iii) as expressly allowed under Sections 14
and 15. 

16.   TERMINATION OR SUSPENSION OF THE PLAN.  

        (a)   The Board in its discretion may suspend or terminate the Plan at any time. Unless sooner terminated, the Plan shall
terminate at the time that all of the shares of Common Stock reserved for issuance under the Plan, as increased and/or adjusted from time to time, have been issued under the terms of the Plan. No
Purchase Rights may be granted under the Plan while the Plan is suspended or after it is terminated. 

        (b)   Any benefits, privileges, entitlements and obligations under any Purchase Rights while the Plan is in effect shall not be
impaired by suspension or termination of the Plan except (i) as expressly allowed under Section 15 or with the consent of the person to whom such Purchase Rights were granted,
(ii) as necessary to comply with any laws, regulations, or listing requirements, or (iii) as necessary to ensure that the Plan and/or Purchase Rights comply with the requirements of
Section 423 of the Code. 

17.   EFFECTIVE DATE OF PLAN.  

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

18.   MISCELLANEOUS PROVISIONS.  

        (a)   The Plan and Offering do not constitute an employment contract. Nothing in the Plan or in the Offering shall in any way
alter the at will nature of a Participant's employment or be deemed to create in any way whatsoever any obligation on the part of any Participant to continue in the employ of the Company or a Related
Corporation, or on the part of the Company or a Related Corporation to continue the employment of a Participant. 

        (b)   Any reference herein to a enrollment forms, written designation or other "written" agreement or document shall include
any agreement or document delivered electronically or posted on the Company's intranet. 

        (c)   The provisions of the Plan shall be governed by the law of the State of California without resort to that state's
conflicts of laws rules. 

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DIVX, INC.    
    
    2006 EMPLOYEE STOCK PURCHASE PLAN
  OFFERING DOCUMENT    
    
    ADOPTED BY THE BOARD OF DIRECTORS: JULY 27, 2006    
    

        In this document, capitalized terms not otherwise defined shall have the same definitions as set forth in the DivX, Inc. 2006 Employee Stock Purchase Plan. 

1.     Grant; Offering Date.  

        (a)   The Board hereby authorizes a series of Offerings pursuant to the terms of this Offering document. 

        (b)   The first Offering hereunder (the "Initial Offering") shall begin on the closing date of the initial public offering of
the Company's Common Stock under a registration statement declared effective under the Securities Act (the "IPO Closing Date") and shall end approximately 6 months following the IPO Closing
Date, unless terminated earlier as provided in the Plan. After the Initial Offering, an additional new Offering shall begin on the day after the Purchase Date of the immediately preceding Offering.
The first day of an Offering is that Offering's "Offering Date." Except as provided below, each Offering shall be approximately six (6) months in duration. Except as provided below, a Purchase
Date is the last day of a Purchase Period or of an Offering, as the case may be. 

        (c)   Notwithstanding the foregoing: (i) if any Offering Date falls on a day that is not a Trading Day, then such
Offering Date shall instead fall on the next subsequent Trading Day, and (ii) if any Purchase Date falls on a day that is not a Trading Day, then such Purchase Date shall instead fall on the
immediately preceding Trading Day. 

        (d)   Prior to the commencement of any Offering, the Board may change any or all terms of such Offering and any subsequent
Offerings. The granting of Purchase Rights pursuant to each Offering hereunder shall occur on each respective Offering Date unless prior to such date (i) the Board determines that such Offering
shall not occur, or (ii) no shares of Common Stock remain available for issuance under the Plan in connection with the Offering. 

2.     Eligible Employees.  

        (a)   Each Eligible Employee who, on the date that is one (1) week prior to the Offering Date of an Offering hereunder,
is (i) an employee of the Company; (ii) an employee of a Related Corporation incorporated in the United States; or (iii) an employee of a Related Corporation that is not
incorporated in the United States, provided that the Board or Committee has designated the employees of such Related Corporation as eligible to participate in the Offering, shall be granted a Purchase
Right on the Offering Date of such Offering. 

        (b)   Notwithstanding the foregoing, the following Employees shall not be Eligible Employees or be granted Purchase Rights
under an Offering: 

        (i)    five percent (5%) stockholders (including ownership through unexercised and/or unvested stock options) as described in
Section 6(c) of the Plan; or 

        (ii)   Employees in jurisdictions outside of the United States if, as of the Offering Date of the Offering, the grant of such
Purchase Rights would not be in compliance with the applicable laws of any jurisdiction in which the Employee resides or is employed. 

        (c)   Notwithstanding the foregoing, each person who first becomes an Eligible Employee during an ongoing Offering shall not be
able to participate in such Offering. 

1

 

3.     Purchase Rights.  

        (a)   Subject to the limitations set forth herein and in the Plan, a Participant's Purchase Right shall permit the purchase of
the number of shares of Common Stock purchasable with up to fifteen percent (15%) of such Participant's Earnings paid during the period of such Offering beginning immediately after such Participant
first commences participation; provided, however, that no Participant may have more than fifteen percent (15%) of such Participant's Earnings applied to
purchase shares of Common Stock under all ongoing Offerings under the Plan and all other plans of the Company and Related Corporations that are intended to qualify as Employee Stock Purchase Plans. 

        (b)   For Offerings hereunder, "Earnings" means the base compensation paid to a Participant, including all salary, wages and
overtime pay (including amounts elected to be deferred by the Participant, that would otherwise have been paid, under any cash or deferred arrangement or other deferred compensation program
established by the Company or a Related Corporation), and all commissions, bonuses, and other remuneration paid directly to such Participant, but excluding all of the following: profit sharing, the
cost of employee benefits paid for by the Company or a Related Corporation, education or tuition reimbursements, imputed income arising under any Company or a Related Corporation group insurance or
benefit program, traveling expenses, business and moving expense reimbursements, income received in connection with stock options, contributions made by the Company or a Related Corporation under any
employee benefit plan, and other similar items of compensation. 

        (c)   Notwithstanding the foregoing, the maximum number of shares of Common Stock that a Participant may purchase on any
Purchase Date shall be such number of shares as has a Fair Market Value (determined as of the Offering Date for such Offering) equal to (x) $25,000 multiplied by the number of calendar years in
which the Purchase Right under such Offering has been outstanding at any time, minus (y) the Fair Market Value of any other shares of Common Stock (determined as of the relevant Offering Date
with respect to such shares) that, for purposes of the limitation of Section 423(b)(8) of the Code, are attributed to any of such calendar years in which the Purchase Right is outstanding. The
amount in clause (y) of the previous sentence shall be determined in accordance with regulations applicable under Section 423(b)(8) of the Code based on (i) the number of shares
previously purchased with respect to such calendar years pursuant to such Offering or any other Offering under the Plan, or pursuant to any other Company or Related Corporation plans intended to
qualify as Employee Stock Purchase Plans, and (ii) the number of shares subject to other Purchase Rights outstanding on the Offering Date for such Offering pursuant to the Plan or any other
such Company or Related Corporation Employee Stock Purchase Plan. 

        (d)   The maximum aggregate number of shares of Common Stock available to be purchased by all Participants on a Purchase Date
shall be one-half (1/2) of the number of shares of Common Stock available under the Plan (rounded down to the nearest whole share) as of the first day of the Company fiscal
year in which such Purchase Date occurs, after giving effect to the annual increase provided in Section 4(a) of the Plan. If the aggregate purchase of shares of Common Stock upon exercise of
Purchase Rights granted under the Offering would exceed the maximum aggregate number of shares available, the Board shall make a pro rata allocation of the shares available in a uniform and equitable
manner. 

        (e)   Notwithstanding the foregoing, the maximum number of shares of Common Stock that an Eligible Employee may purchase on any
Purchase Date shall not exceed 20,000 shares. 

4.     Purchase Price.  

        The purchase price of shares of Common Stock under an Offering shall be the lesser of: (i) eighty-five percent (85%) of the Fair Market Value
of such shares of Common Stock on the applicable Offering Date, or (ii) eighty-five percent (85%) of the Fair Market Value of such shares of 

2

 

Common
Stock on the applicable Purchase Date, in each case rounded up to the nearest whole cent per share. For the Initial Offering, the Fair Market Value of the shares of Common Stock at the time
when the Offering commences shall be the price per share at which shares are first sold to the public in the Company's initial public offering as specified in the final prospectus for that initial
public offering. 

5.     Participation.  

        (a)   An Eligible Employee may elect to participate in an Offering on the Offering Date. An Eligible Employee shall elect his
or her payroll deduction percentage on such enrollment form as the Company provides. The completed enrollment form must be delivered to the Company prior to the date participation is to be effective,
unless a later time for filing the enrollment form is set by the Company for all Eligible Employees with respect to a given Offering. Payroll deduction percentages must be expressed in whole
percentages of Earnings, with a minimum percentage of one percent (1%) and a maximum percentage of fifteen percent (15%). Except as provided in paragraph (f) below with respect to the Initial
Offering, Contributions may be made only through payroll deductions. 

        (b)   A Participant may increase or decrease his or her participation level at any time with such change to be effective
commencing as of the next Offering. Any such increase or decrease in participation level shall be made by delivering a notice to the Company or a designated Related Corporation in such form as the
Company provides prior to the ten (10) day period (or such shorter period of time as determined by the Company and communicated to Participants) immediately preceding the next Offering Date for
which it is to be effective. 

        (c)   A Participant may decrease (including a decrease to zero percent (0%)) his or her participation level at any time during
a Purchase Period. Any such change in participation level shall be made by delivering a notice to the Company or a designated Related Corporation in such form as the Company provides prior to the ten
(10) day period (or such shorter period of time as determined by the Company and communicated to Participants) immediately preceding the next Purchase Date of the Purchase Period for which it
is to be effective. Such change will become effective as soon as administratively practicable following the Company's receipt of the notice. 

        (d)   A Participant may withdraw from an Offering and receive a refund of his or her Contributions (reduced to the extent, if
any, such Contributions have been used to acquire shares of Common Stock for the Participant on any prior Purchase Date) without interest, at any time prior to the end of the Offering, excluding only
each ten (10) day period immediately preceding a Purchase Date (or such shorter period of time determined by the Company and communicated to Participants), by delivering a withdrawal notice to
the Company or a designated Related Corporation in such form as the Company provides. A Participant who has withdrawn from an Offering shall not again participate in such Offering, but may participate
in subsequent Offerings under the Plan in accordance with the terms of the Plan and the terms of such subsequent Offerings. 

        (e)   Notwithstanding the foregoing or any other provision of this Offering document or of the Plan to the contrary, neither
the enrollment of any Eligible Employee in the Plan nor any forms relating to participation in the Plan shall be given effect until such time as a registration statement covering the registration of
the shares under the Plan that are subject to the Offering has been filed by the Company and has become effective. 

        (f)    Notwithstanding the foregoing or any other provision of this Offering document or of the Plan to the contrary, with
respect to the Initial Offering only, each Eligible Employee who is employed on the IPO Closing Date automatically shall be enrolled in the Initial Offering, with a Purchase Right to purchase up to
the number of shares of Common Stock that are purchasable with fifteen percent (15%) of the Eligible Employee's Earnings, subject to the limitations set forth in Section 3(c)-3(e) above.
Following the filing of an effective registration statement pursuant to a Form S-8, such Eligible 

3

 

Employee
shall be provided a certain period of time, as determined by the Company in its sole discretion, within which to elect to authorize payroll deductions for the purchase of shares during the
Initial Offering (which may be for a percentage that is less than fifteen percent (15%) of the Eligible Employee's Earnings). If such Eligible Employee elects not to authorize such payroll deductions,
the Eligible Employee instead may purchase shares of Common Stock under the Plan by delivering a single cash payment for the purchase of such shares to the Company or a designated Related Corporation
prior to the ten (10) day period (or such shorter period of time as determined by the Company and communicated to Participants) immediately preceding the Purchase Date under the Initial
Offering. If an Eligible Employee neither elects to authorize payroll deductions nor chooses to make a cash payment in accordance with the foregoing sentence, then the Eligible Employee shall not
purchase any shares of Common Stock during the Initial Offering. After the end of the Initial Offering, in order to participate in any subsequent Offerings, an Eligible Employee must enroll and
authorize payroll deductions prior to the commencement of the Offering, in accordance with paragraph (a) above; provided, however, that once an
Eligible Employee enrolls in an Offering and authorizes payroll deductions (including in connection with the Initial Offering), the Eligible Employee automatically shall be enrolled for all subsequent
Offerings until he or she elects to withdraw from an Offering pursuant to paragraph (c) above or terminates his or her participation in the Plan. 

6.     Purchases.  

        Subject to the limitations contained herein, on each Purchase Date, each Participant's Contributions (without any increase for interest) shall be applied to the
purchase of whole shares of Common Stock, up to the maximum number of shares permitted under the Plan and an Offering. 

7.     Notices and Agreements.  

        Any notices or agreements provided for in an Offering or the Plan shall be given in writing, in a form provided by the Company, and unless specifically provided
for in the Plan or this Offering, shall be deemed effectively given upon receipt or, in the case of notices and agreements delivered by the Company, five (5) days after deposit in the United
States mail, postage prepaid. 

8.     Exercise Contingent on Stockholder Approval.  

        The Purchase Rights granted under an Offering are subject to the approval of the Plan by the stockholders of the Company as required for the Plan to obtain
treatment as an Employee Stock Purchase Plan. 

9.     Offering Subject to Plan.  

        Each Offering is subject to all the provisions of the Plan, and the provisions of the Plan are hereby made a part of the Offering. The Offering 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 an
Offering and those of the Plan (including interpretations, amendments, rules and regulations which may from time to time be promulgated and adopted pursuant to the Plan), the provisions of the Plan
shall control. 

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QuickLinks

DIVX, INC. 2006 EMPLOYEE STOCK PURCHASE PLAN ADOPTED BY THE BOARD OF DIRECTORS: JULY 27, 2006 APPROVED BY STOCKHOLDERS: , 2006

DIVX, INC. 2006 EMPLOYEE STOCK PURCHASE PLAN OFFERING DOCUMENT ADOPTED BY THE BOARD OF DIRECTORS: JULY 27, 2006Exhibit 4.3  

        [FORSYTHE LOGO] 

        THIS
WARRANT AGREEMENT AND THE UNDERLYING SECURITIES HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 AS AMENDED, OR ANY STATE SECURITIES LAWS. THEY MAY NOT BE SOLD, OFFERED FOR
SALE, PLEDGED, OR HYPOTHECATED IN THE ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL (WHICH MAY BE COMPANY COUNSEL) REASONABLY SATISFACTORY TO THE COMPANY THAT
SUCH REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR ANY APPLICABLE STATE SECURITIES LAWS. 

WARRANT AGREEMENT  

 To Purchase Shares of the Series C Preferred Stock of  

 Affymax, Inc.  

 Dated as of January 1, 2005 (the "Effective Date")  

        WHEREAS, Affymax, Inc., a Delaware corporation (the "Company") has or is about to enter into Master Lease Line Commitment Agreement
No. BL8 and related Supplements, Master Equipment Lease Agreement No. B8 and related Equipment Schedules (collectively, the "Lease(s)") with Forsythe Biotechnology Group,
Inc., an Illinois corporation (the "Warrantholder"); and 

        WHEREAS, the Company desires to grant to Warrantholder, in consideration for such Lease(s), the right to purchase shares of its
Series C Preferred Stock; 

        NOW, THEREFORE, in consideration of the Warrantholder executing and delivering such Lease(s) and in consideration of mutual covenants and
agreements contained herein, the Company and Warrantholder agree as follows: 

1.    GRANT OF THE RIGHT TO PURCHASE PREFERRED STOCK ("WARRANT(S)").    

        The
Company hereby grants to the Warrantholder, and the Warrantholder is entitled, upon the terms and subject to the conditions hereinafter set forth, to subscribe to and purchase, from
the Company, a total number of fully paid and non-assessable shares of the Company's Series C Preferred Stock ("Preferred Stock") equal to $30,000 divided by the then
Series C price per share of $3.773 for a total of 7,951 shares at an exercise price of $3.773 per share (the "Exercise Price"). The number and purchase price of such shares are subject to
adjustment as provided in Section 8 hereof. Immediately prior to the closing of a registered public offering of the Company's securities, this Warrant Agreement shall become exercisable for
that number of shares of Common Stock of the Company into which the shares of Preferred Stock issuable under this Warrant Agreement would then be convertible, so long as such shares, if this Warrant
Agreement has been exercised prior to such offering, would have been converted into shares of the Company's Common Stock pursuant to the automatic conversion provisions (or otherwise) of the Company's
Certificate of Incorporation, as amended from time to time (a "Qualified Offering"). For the purposes of this Warrant Agreement, if this Warrant Agreement has not been exercised prior to a Qualified
Offering, all references to Preferred Stock herein shall be deemed to refer to Common Stock, as appropriately adjusted to reflect the conversion of Preferred Stock into Common Stock. 

2.    TERM OF THE WARRANT AGREEMENT.    

        Except
as otherwise provided for herein, the term of this Warrant Agreement and the right to purchase Preferred Stock as granted herein shall commence on the Effective Date and shall be
exercisable for a period of (i) seven (7) years or (ii) five (5) years from the effective date of the Company's initial public offering, whichever is longer. 

        Notwithstanding
the above, if Company is acquired by, merges or consolidates with another corporation, Warrantholder shall be entitled to receive an amount equal to the fair value of the
Warrants either through replacement with securities of the successor corporation or cash. Following such compensation as aforesaid and provided the Company is not then in default under or violation of
any provision of this Warrant Agreement, this Warrant Agreement shall expire. 

1

 

3.    EXERCISE OF THE PURCHASE RIGHTS.    

        (a)    Exercise.    The purchase rights set forth in this Warrant Agreement are exercisable by
the Warrantholder, in whole or in part, at any time, or from time to time, prior to the expiration of the term set forth in Section 2 above, by tendering to the Company at its principal office
a notice of exercise in the form attached hereto as Exhibit I(the "Notice of Exercise"), duly completed and executed. Promptly upon receipt of
the Notice of Exercise and the payment of the purchase price in accordance with the terms set forth below, and in no event later than twenty-one (21) days thereafter, the Company
shall issue to the Warrantholder a certificate for the number of shares of Preferred Stock purchased and shall execute the acknowledgment of exercise in the form attached hereto as  Exhibit II (the
"Acknowledgment of Exercise") indicating the number of shares which remain subject to future purchases, if any. 

        The
Exercise Price may be paid at the Warrantholder's election either (i) by cash or check, or (ii) by surrender of this Warrant Agreement for exercise pursuant to the "Net
Issuance" calculation as determined below. If the Warrantholder elects the Net Issuance method, the Company will issue Preferred Stock in accordance with the following formula: 

	X	 	=	 	Y(A - B)	 	 
	 	 	 	 	
 A

	 	 

	Where:	 	X=	 	the number of shares of Preferred Stock to be issued to the Warrantholder.
	 	 	Y=	 	the number of shares of Preferred Stock requested to be exercised under this Warrant Agreement.
	 	 	A=	 	the fair market value of one (1) share of Preferred Stock.
	 	 	B=	 	the Exercise Price.

        For
purposes of the above calculation, current fair market value of Preferred Stock shall mean with respect to each share of Preferred Stock: 

        (i)    if
the exercise is in connection with an initial public offering of the Company's Common Stock, and if the Company's Registration Statement relating to such public
offering has been declared effective by the SEC, then the fair market value per share shall be the product of (x) the initial "Price to Public" specified in the final prospectus with respect to
the offering and (y) the number of shares of Common Stock into which each share of Preferred Stock is convertible at the time of such exercise; 

        (ii)   if
this Warrant is exercised after, and not in connection with the Company's initial public offering, and: 

        (a)   if
traded on a securities exchange, the fair market value shall be deemed to be the product of (x) the average of the closing prices over a five (5) day
period ending three days before the day the current fair market value of the securities is being determined and (y) the number of shares of Common Stock into which each share of Preferred Stock
is convertible at the time of such exercise; or 

        (b)   if
actively traded over-the-counter, the fair market value shall be deemed to be the product of (x) the average of the closing bid and
asked prices quoted on the NASDAQ system (or similar system) over the five (5) day period ending three days before the day the current fair market value of the securities is being determined
and (y) the number of shares of Common Stock into which each share of Preferred Stock is convertible at the time of such exercise; and 

        (iii)  if
at any time the Common Stock is not listed on any securities exchange or quoted in the NASDAQ System or the over-the-counter market, the
current fair market value of Preferred Stock shall be the product of (x) the highest price per share which the Company could obtain from a willing buyer (not a current employee or director) for
shares of Common Stock sold by the Company, from authorized but unissued shares, as determined in good faith by its Board of Directors and (y) the number of shares of Common Stock into which
each share of Preferred Stock is convertible at the time of such exercise, unless the Company shall become 

2

 

subject
to a merger, acquisition or other consolidation pursuant to which the Company is not the surviving party, in which case the fair market value of Preferred Stock shall be deemed to be the value
received by the holders of the Company's Preferred Stock on a common equivalent basis pursuant to such merger or acquisition. 

        Upon
partial exercise by either cash or Net Issuance, the Company shall promptly issue an amended Warrant Agreement representing the remaining number of shares purchasable hereunder. All
other terms and conditions of such amended Warrant Agreement shall be identical to those contained herein, including, but not limited to the Effective Date hereof. 

        (b)    Exercise Prior to Expiration.    To the extent this Warrant is not previously exercised
as to all Preferred Stock subject hereto, and if the fair market value of one share of the Preferred Stock is greater than the Exercise Price then in effect, this Warrant shall be deemed automatically
exercised pursuant to Section 3(a) above (even if not surrendered) immediately before its expiration. For purposes of such automatic exercise, the fair market value of one share of the
Preferred Stock upon such expiration shall be determined pursuant to Section 3(a) above. To the extent this Warrant or any portion thereof is deemed automatically exercised pursuant to this
Section 3(b), the Company agrees to promptly notify the Warrantholder of the number of shares of Preferred Stock, if any, the Warrantholder is to receive by reason of such automatic exercise. 

4.    RESERVATION OF SHARES.    

        During
the term of this Warrant Agreement, the Company will at all times have authorized and reserved a sufficient number of shares of its Preferred Stock to provide for the exercise of
the rights to purchase Preferred Stock as provided for herein. 

5.    NO FRACTIONAL SHARES OR SCRIP.    

        No
fractional shares or scrip representing fractional shares shall be issued upon the exercise of the Warrant, but in lieu of such fractional shares, the Company shall make a cash
payment therefore upon the basis of the Exercise Price then in effect. 

6.    NO RIGHTS AS SHAREHOLDER.    

        This
Warrant Agreement does not entitle the Warrantholder to any voting rights or other rights as a shareholder of the Company prior to the exercise of the Warrant. 

7.    WARRANTHOLDER REGISTRY.    

        The
Company shall maintain a registry showing the name and address of the registered holder of this Warrant Agreement. 

8.    ADJUSTMENT RIGHTS.    

        The
purchase price per share and the number of shares of Preferred Stock purchasable hereunder are subject to adjustment, as follows: 

        (a)    Merger and Sale of Assets.    Intentionally Deleted 

        (b)    Reclassification of Shares.    If the Company at any time shall, by combination,
reclassification, exchange or subdivision of securities or otherwise, change any of the securities as to which purchase rights under this Warrant Agreement exist into the same or a different number of
securities of any other class or classes, this Warrant Agreement shall thereafter represent the right to acquire such number and kind of securities as would have been issuable as the result of such
change with respect to the securities which were subject to the purchase rights under this Warrant Agreement immediately prior to such combination, reclassification, exchange, subdivision or other
change. 

        (c)    Subdivision or Combination of Shares.    If the Company at any time shall combine or
subdivide its Preferred Stock, the Exercise Price shall be proportionately decreased in the case of a subdivision, or proportionately increased in the case of a combination. 

        (d)    Stock Dividends.    If the Company at any time shall pay a dividend payable in, or make
any other distribution (except any distribution specifically provided for in the foregoing subsections (a) or (b)) of the Company's stock, then the Exercise Price shall be adjusted, from and
after the record date of such dividend or distribution, to that price determined by multiplying the Exercise Price in effect immediately prior to such record date by a fraction (i) the 

3

 

numerator
of which shall be the total number of all shares of the Company's stock outstanding immediately prior to such dividend or distribution, and (ii) the denominator of which shall be the
total number of all shares of the Company's stock outstanding immediately after such dividend or distribution. The Warrantholder shall thereafter be entitled to purchase, at the Exercise Price
resulting from such adjustment, the number of shares of Preferred Stock (calculated to the nearest whole share) obtained by multiplying the Exercise Price in effect immediately prior to such
adjustment by the number of shares of Preferred Stock issuable upon the exercise hereof immediately prior to such adjustment and dividing the product thereof by the Exercise Price resulting from such
adjustment. 

        (e)    Right to Purchase Additional Stock.    If, the original equipment cost of all equipment
leased by Warrantholder under the Leases exceeds $1,000,000, Warrantholder shall have the right to purchase from the Company, at the Exercise Price (adjusted as set forth herein), an additional number
of shares, which number shall be determined by (i) multiplying the amount by which the Warrantholder's total equipment cost exceeds $1,000,000 by 3%, and (ii) dividing the product
thereof by $3.773 per share. 

        (f)    Antidilution Rights.    Additional antidilution rights applicable to the Preferred
Stock purchasable hereunder are as set forth in the Company's Charter(1), a true and complete current copy of which is attached hereto as  Exhibit IV. The Company shall promptly provide the
Warrantholder with any restatement, amendment, modification or waiver of the Charter. The
Company shall provide Warrantholder with any written notice of adjustments to the conversion price of the Series C Preferred Stock, to the extent such notices are prepared and delivered to the
stockholders of the Company. 

        (g)    Notice of Adjustments.    If: (i) the Company shall declare any dividend or
distribution upon its stock, whether in cash, property, stock or other securities; (ii) there shall be any Merger Event; (iii) there shall be an initial public offering; or
(iv) there shall be any voluntary dissolution, liquidation or winding up of the Company; then, in connection with each such event, the Company shall send to the Warrantholder: (A) at
least twenty (20) days' prior written notice of the date on which the books of the Company shall close or a record shall be taken for such dividend, distribution, subscription rights
(specifying the date on which the holders of Preferred Stock shall be entitled thereto) or for determining rights to vote in respect of such dissolution, liquidation or winding up; (B) in the
case of any such Merger Event, dissolution, liquidation or winding up, at least twenty (20) days' prior written notice of the date when the same shall take place (and specifying the date on
which the holders of Preferred Stock shall be entitled to exchange their Preferred Stock for securities or other property deliverable upon such Merger Event, dissolution, liquidation or winding up, to
the extent known by the Company at such time); and (C) in the case of a public offering, the Company shall give the Warrantholder at least twenty (20) days written notice prior to the
effective date thereof. 

        Each
such written notice delivered under Section 8(g)(i) shall set forth, in reasonable detail, (i) the event requiring the adjustment, (ii) the amount of the
adjustment, (iii) the method by which such adjustment was calculated, (iv) the Exercise Price, and (v) the number of shares subject to purchase hereunder after giving effect to
such adjustment. 

        (h)    Timely Notice.    Failure to timely provide such notice required by subsection
(g) above shall entitle Warrantholder to retain the benefit of the applicable notice period notwithstanding anything to the contrary contained in any insufficient notice received by
Warrantholder. 

9.    REPRESENTATIONS, WARRANTIES AND COVENANTS OF THE COMPANY.    

        (a)    Reservation of Preferred Stock.    The Preferred Stock issuable upon exercise of the
Warrantholder's rights has been duly and validly reserved and, when issued in accordance with the provisions of this Warrant Agreement, will be validly issued, fully paid and
non-assessable, and will be free
of any taxes, liens, charges or encumbrances of any nature whatsoever; provided, however, that the Preferred Stock issuable pursuant to this Warrant Agreement may be subject to restrictions on
transfer under state and/or Federal securities laws. The Company has made available to the Warrantholder true, correct and complete copies of its Charter and Bylaws, as amended. The issuance of
certificates for shares of Preferred Stock upon exercise of the Warrant Agreement shall be made without charge to the Warrantholder for any issuance tax in respect thereof, or other cost incurred by
the Company in connection with such exercise and the related issuance of shares of Preferred Stock. The Company shall not be required to pay any tax, which may be payable in respect of any transfer
involved and the issuance and delivery of any certificate in a name other than that of the Warrantholder. 

        (b)    Due Authority.    The execution and delivery by the Company of this Warrant Agreement
and the performance of all obligations of the Company hereunder, including the issuance to Warrantholder of the right to acquire the shares of Preferred Stock, have been duly authorized by all
necessary corporate action on the part of the Company, 

4

 

and
the Leases and this Warrant Agreement are not inconsistent with the Company's Charter or Bylaws, do not contravene any law or governmental rule, regulation or order applicable to it, do not and
will not contravene any provision of, or constitute a default under, any indenture, mortgage, contract or other instrument to which it is a party or by which it is bound, and the Leases and this
Warrant Agreement constitute legal, valid and binding agreements of the Company, enforceable in accordance with their respective terms, subject to laws of general application relating to bankruptcy,
insolvency, the relief of debtors and subject to federal and state securities laws. 

        (c)    Consents and Approvals.    No consent or approval of, giving of notice to, registration
with, or taking of any other action in respect of any state, Federal or other governmental authority or agency is required with respect to the execution, delivery and performance by the Company of its
obligations under this Warrant Agreement, except for the filing of notices pursuant to Regulation D under the 1933 Act and any filing required by applicable state securities law, which filings
will be effective by the time required thereby. 

        (d)    Issued Securities.    All issued and outstanding shares of Common Stock, Preferred
Stock or any other securities of the Company have been duly authorized and validly issued and are fully paid and nonassessable. All outstanding shares of Common Stock, Preferred Stock and any other
securities were issued in full compliance with all Federal and state securities laws. In addition: 

	(i)
	The
authorized capital of the Company consists of (A) 28,000,000 shares of Common Stock, of which 1,278,171 shares are issued and outstanding, and
(B) 18,300,000 shares of preferred stock, of which 17,901,641 shares are issued and outstanding.

	(ii)
	The
Company has reserved 3,699,000 shares of Common Stock for issuance under its 20011 Stock Option/Stock Issuance Plan], of which 2,709,789 options are
outstanding. 

        (e)    Insurance.    As of the Effective Date, the Company has in full force and effect
insurance policies, with extended coverage, insuring the Company and its property and business against such losses and risks, and in such amounts, as are customary for corporations engaged in a
similar business and similarly situated and as otherwise may be required pursuant to the terms of any other contract or agreement. 

        (f)    Other Commitments to Register Securities.    Except as set forth in this Warrant
Agreement and that certain Amended and Restated Investors' Rights Agreement dated April 9, 2004, the Company is not, pursuant to the terms of any other agreement currently in existence, under
any obligation to register under the 1933 Act any of its presently outstanding securities or any of its securities, which may hereafter be issued. This Warrant Agreement does not entitle the
Warrantholder to any registration rights and except as aforesaid, Warrantholder will not require registration of the Warrant. 

        (g)    Exempt Transaction.    Subject to the accuracy of the Warrantholder's representations
in Section 10 hereof, the issuance of the Preferred Stock upon exercise of this Warrant will constitute a transaction exempt from (i) the registration requirements of Section 5 of
the 1933 Act, in reliance upon Section 4(2) thereof, and (ii) the qualification requirements of the applicable state securities laws. 

        (h)    Compliance with Rule 144.    At the written request of the Warrantholder, who
proposes to sell Preferred Stock issuable upon the exercise of the Warrant in compliance with Rule 144 promulgated by the Securities and Exchange Commission, the Company shall furnish to the
Warrantholder, within ten days after receipt of such request, a written statement confirming the Company's compliance with the filing requirements of the Securities and Exchange Commission as set
forth in such Rule, as such Rule may be amended from time to time. 

10.    REPRESENTATIONS AND COVENANTS OF THE WARRANTHOLDER.    

        This
Warrant Agreement has been entered into by the Company in reliance upon the following representations and covenants of the Warrantholder: 

        (a)    Investment Purpose.    The right to acquire Preferred Stock or the Preferred Stock
issuable upon exercise of the Warrantholder's rights contained herein will be acquired for investment for Warrantholder's own account and not with a view to the sale or distribution of any part
thereof, and the Warrantholder has no present intention of selling or engaging in any public distribution of the same except pursuant to a registration or exemption. 

        (b)    Private Issue.    The Warrantholder understands (i) that the Preferred Stock
issuable upon exercise of this Warrant is not registered under the 1933 Act or qualified under applicable state securities laws on the ground that the 

5

 

issuance
contemplated by this Warrant Agreement will be exempt from the registration and qualifications requirements thereof, and (ii) that the Company's reliance on such exemption is
predicated on the representations set forth in this Section 10. 

        (c)    Disposition of Warrantholder's Rights.    In no event will the Warrantholder make a
disposition of any of its rights to acquire Preferred Stock or Preferred Stock issuable upon exercise of such rights unless and until (i) it shall have notified the Company of the proposed
disposition, and (ii) if requested by the Company, it shall have furnished the Company with an opinion of counsel (which counsel may either be inside or outside counsel to the Warrantholder)
satisfactory to the Company and its counsel to the effect that (A) appropriate action necessary for compliance with the 1933 Act has been taken, or (B) an exemption from the registration
requirements of the 1933 Act is available. Notwithstanding the foregoing, the restrictions imposed upon the transferability of any of its rights to acquire Preferred Stock or Preferred Stock issuable
on the exercise of such rights do not apply to transfers from the beneficial owner of any of the aforementioned securities to its nominee or from such nominee to its beneficial owner, and shall
terminate as to any particular share of Preferred Stock when (1) such security shall have been effectively registered under the 1933 Act and sold by the holder thereof in accordance with such
registration or (2) such security shall have been sold without registration in compliance with Rule 144 under the 1933 Act, or (3) a letter shall have been issued to the
Warrantholder at its request by the staff of the Securities and Exchange Commission or a ruling shall have been issued to the Warrantholder at its request by such Commission stating that no action
shall be recommended by such staff or taken by such Commission, as the case may be, if such security is transferred without registration under the 1933 Act in accordance with the conditions set forth
in such letter or ruling and such letter or ruling specifies that no subsequent restrictions on transfer are required. The Warrantholder understands and agrees that all certificates evidencing the
shares to be issued to the Warrantholder may bear a legend substantially similar to that contained on the initial page of this Warrant Agreement. Whenever the restrictions imposed hereunder shall
terminate, as hereinabove provided, the Warrantholder or holder of a share of Preferred Stock then outstanding as to which such restrictions have terminated shall be entitled to receive from the
Company, without expense to such holder, one or more new certificates for the Warrant or for such shares of Preferred Stock not bearing any restrictive legend. 

        (d)    Financial Risk.    The Warrantholder has such knowledge and experience in financial and
business matters as to be capable of evaluating the merits and risks of its investment, and has the ability to bear the economic risks of its investment. 

        (e)    Risk of No Registration.    The Warrantholder understands that if the Company does not
register with the Securities and Exchange Commission pursuant to Section 12 of the 1934 Act (the "1934 Act"), or file reports pursuant to Section 15(d), of the 1934 Act, or if a
registration statement covering the securities under the 1933 Act is not in effect when it desires to sell (i) the rights to purchase Preferred Stock pursuant to this Warrant Agreement, or
(ii) the Preferred Stock issuable upon exercise of the right to purchase, it may be required to hold such securities for an indefinite period. The Warrantholder also understands that any sale
of its rights of the Warrantholder to purchase Preferred Stock or Preferred Stock which might be made by it in reliance upon Rule 144 under the 1933 Act may be made only in accordance with the
terms and conditions of that Rule. 

        (f)    Accredited Investor.    Warrantholder is an "accredited investor" within the meaning of
the Securities and Exchange Rule 501 of Regulation D, as presently in effect. 

11.    MARKET STAND-OFF AGREEMENT.    

        Warrantholder
hereby agrees that, during the period of duration specified by the Company and an underwriter of Common Stock or other securities of the Company, following the effective
date of the first registration statement for a firm commitment underwritten public offering of the Company's securities filed under the Securities Act, it shall not, to the extent requested by the
Company and such underwriter, directly or indirectly, sell, offer to sell, contract to sell (including, without limitation, any short sale), grant any option to purchase or otherwise transfer or
dispose of (other than to donees who agree to be similarly bound), or reduce its interest in (collectively, "Transfer"), any securities of the Company
held by it at any time during such period except Common Stock included in such registration; provided,  however, that: 

	(i)
	all
executive officers and directors of the Company and all other persons holding at least 1% of the Company's outstanding stock enter into similar agreements; and

	(ii)
	such
market stand-off time period shall not exceed 180 days. 

In
order to enforce the foregoing covenants, the Company may impose stop-transfer instructions with respect to the securities held by Warranttholder (and the shares or securities of every
other person subject to the foregoing restriction) until the end of such period. Notwithstanding the foregoing, the obligations described in this Section 11 shall not apply to 

6

 

a
registration relating solely to employee benefit plans on Form S-1 or Form S-8 or similar forms that may be promulgated in the future, or to a registration
relating solely to a Commission Rule 145 transaction. 

12.    TRANSFERS.    

        Subject
to the terms and conditions contained in Section 10 hereof, this Warrant Agreement and all rights hereunder are transferable in whole or in part by the Warrantholder and
any successor transferee, provided, however, in no event shall the number of transfers of the rights and interests in all of the Warrants exceed three (3) transfers. The transfer shall be
recorded on the books of the Company upon receipt by the Company of a notice of transfer in the form attached hereto as Exhibit III (the
"Transfer Notice"), at its principal offices and the payment to the Company of all transfer taxes and other governmental charges imposed on such transfer. 

13.    MISCELLANEOUS.    

        (a)    Effective Date.    The provisions of this Warrant Agreement shall be construed and
shall be given effect in all respects as if it had been executed and delivered by the Company on the date hereof. This Warrant Agreement shall be binding upon any successors or assigns of the Company. 

        (b)    Attorney's Fees.    In any litigation, arbitration or court proceeding between the
Company and the Warrantholder relating hereto, the prevailing party shall be entitled to attorneys' fees and expenses and all costs of proceedings incurred in enforcing this Warrant Agreement. 

        (c)    Governing Law.    This Warrant Agreement shall be governed by and construed for all
purposes under and in accordance with the laws of the State of Illinois. 

        (d)    Counterparts.    This Warrant Agreement may be executed in two or more counterparts,
each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. 

        (e)    Notices.    Any notice required or permitted hereunder shall be given in writing and
shall be deemed effectively given (i) upon personal delivery, (ii) when sent by confirmed facsimile transmission or (iii) seven (7) days after deposit in the United States
mail, by registered or certified mail, or one (1) business day after deposit with a nationally recognized overnight courier, specifying next day delivery, addressed
(i) to the Warrantholder at 7770 Frontage Road, Skokie, Illinois 60077, Attention: Venture Lease
Administration, cc: Legal Department, Attention: General Counsel, (and/or, if by Facsimile,
(847) 213-7800 and (847)213-8795) and (ii) to the Company at 4001 Miranda Avenue, Palo Alto, CA 94304  Attention: Chief Financial Officer (and/or
if by Facsimile, (650) 424-0832) or at such other address as any such party may
subsequently designate by written notice to the other party. 

        (f)    Remedies.    In the event of any default hereunder, the non-defaulting
party may proceed to protect and enforce its rights either by suit in equity and/or by action at law, including but not limited to an action for damages as a result of any such default, and/or an
action for specific performance for any default where the non-defaulting party will not have an adequate remedy at law and where damages will not be readily ascertainable. In the event of
a judicial finding of a breach of this Agreement, the breaching party expressly agrees that it shall not oppose an application by the non-breaching party or any other person entitled to
the benefit of this Agreement requiring specific performance of any or all provisions hereof or enjoining the breaching party from continuing to commit any such breach of this Warrant Agreement. 

        (g)    No Impairment of Rights.    The Company will not, by amendment of its Charter or
through any other means (except as such amendment or such actions may be approved by the Company's Board of Directors), intentionally avoid or seek to avoid the observance or performance of any of the
terms of this Warrant, but will at all times in good faith assist in the carrying out of all such terms and in the taking of all commercially reasonable actions as may be necessary or appropriate in
order to protect the rights of the Warrantholder against material impairment. 

        (h)    Survival.    The representations, warranties, covenants and conditions of the
respective parties contained herein or made pursuant to this Warrant Agreement shall survive the execution and delivery of this Warrant Agreement. 

        (i)    Severability.    In the event any one or more of the provisions of this Warrant
Agreement shall for any reason be held invalid, illegal or unenforceable, the remaining provisions of this Warrant Agreement shall be unimpaired, and the invalid, illegal or unenforceable provision
shall be replaced by a mutually acceptable valid, legal and enforceable provision, which comes closest to the intention of the parties underlying the invalid, illegal or unenforceable provision. 

7

 

        (j)    Amendments.    Any provision of this Warrant Agreement may be amended by a written
instrument signed by the Company and by the Warrantholder. 

        (k)    Additional Documents.    The Company, upon execution of this Warrant Agreement, shall
provide the Warrantholder with certified resolutions with respect to the representations, warranties and covenants
set forth in subparagraphs (a) through (d) and (f) of Section 9 above.    The Company shall also supply such other documents as the Warrantholder may from time
to time reasonably request. 

        IN WITNESS WHEREOF, the parties hereto have caused this Warrant Agreement to be executed by its officers thereunto duly authorized as of
the Effective Date. 

	COMPANY:	 	Affymax, Inc.
	

 	
 	

By:	
 	

/s/ Ali Mahdavi

	

 	
 	

Title:	
 	

V.P. Finance

	
WARRANTHOLDER:	
 	
Forsythe Biotechnology Group, Inc.
	

 	
 	

By:	
 	

/s/ Illegible

	

 	
 	

Title:	
 	

President

8

 
EXHIBIT I  

 NOTICE OF EXERCISE  

To:
                                      

	(1)
	The
undersigned Warrantholder hereby elects to purchase              shares of the Series              Preferred Stock
of                         , pursuant to the terms of the Warrant Agreement dated the
         day of
                        ,              (the "Warrant
Agreement") between                          and the Warrantholder, and
tenders herewith payment of the purchase price for such shares in full, together with all applicable transfer taxes, if any.

	(2)
	In
exercising its rights to purchase the Series              Preferred Stock of
                        , the undersigned hereby
confirms and acknowledges the investment representations and warranties made in Section 10 of the Warrant Agreement.

	(3)
	Please
issue a certificate or certificates representing said shares of Series              Preferred Stock in the name of the undersigned or in such
other name as is specified below. 

	 	 	
 (Name)
	

 	
 	

 (Address)
	
WARRANTHOLDER:	
 	
FORSYTHE BIOTECHNOLOGY GROUP, INC.
	

 	
 	

By:	
 	

    

	

 	
 	

Title:	
 	

    

	

 	
 	

Date:	
 	

    

9

 
EXHIBIT II  

ACKNOWLEDGMENT OF EXERCISE  

        The undersigned                         , hereby
acknowledge receipt of the "Notice of Exercise" from Forsythe Biotechnology
Group, Inc., to purchase              shares of the Series              Preferred Stock of
                        , pursuant to the terms of the Warrant Agreement, and further acknowledges that
             shares remain subject to
purchase under the terms of the Warrant Agreement. 

	COMPANY:	 	 	 	 
	

 	
 	

By:	
 	

    

	

 	
 	

Title:	
 	

    

	

 	
 	

Date:	
 	

    

10

 
EXHIBIT III  

 TRANSFER NOTICE  

(To transfer or assign the foregoing Warrant Agreement execute this form and supply required information. Do not use this form to purchase shares.)

        FOR VALUE RECEIVED, the foregoing Warrant Agreement and all rights evidenced thereby are hereby transferred and assigned to 

	 	 	    
 (Please Print)	 	 
	 	
whose address is	
 	

    
	
 	

 
	

 	
 	

    
	
 	

 
	 	 	
Dated:	
 	

    
	
 	

 
	 	 	
Holder's Signature:	
 	

    
	
 	

 
	 	 	
Holder's Address:	
 	

    
	
 	

 
	

 	
 	

    
	
 	

 
	
Signature Guaranteed:	
 	

    
	
 	

 

	NOTE:
	The signature to this Transfer Notice must correspond with the name as it appears on the face of the Warrant Agreement, without
alteration or enlargement or any change whatever. Officers of corporations and those acting in a fiduciary or other representative capacity should file proper evidence of authority to assign the
foregoing Warrant Agreement. 

11

 
EXHIBIT IV  

 (INSERT CHARTER)  

12

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