Document:

Amended and Restated 2000 Incentive Stock Plan

 EXHIBIT 10.1 
  
 ACOLOGIX, INC. 
 AMENDED AND RESTATED
2000 INCENTIVE STOCK PLAN 
 (As Amended Through July 13, 2006) 
  
 1.    Purposes of the Plan. The purposes
of this Incentive Stock Plan are to attract and retain the best available personnel for positions of substantial responsibility, to provide additional incentive to Employees, Directors and Consultants and to promote the success of the Company’s
business. Options granted under the Plan may be Incentive Stock Options or Nonstatutory Stock Options, as determined by the Administrator at the time of grant. Stock Purchase Rights may also be granted under the Plan. 
 2.    Definitions. As used herein, the following definitions shall apply: 
 (a)    “Administrator” means the Board or any of its Committees as shall be administering the Plan in accordance
with Section 4 hereof. 
 (b)    “Applicable Laws” means the requirements relating to the
administration of stock option plans under U.S. state corporate laws, U.S. federal and state securities laws, the Code, any stock exchange or quotation system on which the Common Stock is listed or quoted and the applicable laws of any foreign
country or jurisdiction where Options or Stock Purchase Rights are granted under the Plan. 
 (c)    “Board” means the Board of Directors of the Company. 
 (d)    “Cause” means (i) the Optionee’s or Purchaser’s continued failure to substantially perform the principal duties and obligations of his or her position with the Company (other than
any such failure resulting from Disability); (ii) any act of personal dishonesty, fraud or misrepresentation taken by the Optionee or Purchaser which was intended to result in substantial gain or personal enrichment of the Optionee or Purchaser
at the expense of the Company; (iii) the Optionee’s or Purchaser’s violation of a federal or state law or regulation applicable to the Company’s business which violation was or is reasonably likely to be injurious to the Company;
(iv) the Optionee’s or Purchaser’s conviction of a felony or a plea of nolo contendere under the laws of the United States or any State; or (v) the Optionee’s or Purchaser’s breach of the terms of the Optionee’s or
Purchaser’s proprietary information and inventions assignment agreement with the Company, if any. 
 (e)    “Change of Control” means (i) the acquisition of the Company by another entity by means of any transaction or series of related transactions (including, without limitation, any
reorganization, merger or consolidation, but excluding any merger effected primarily for the purpose of changing the domicile of the Company), unless the Company’s stockholders of record as constituted immediately prior to such transaction or
series of related transactions will, immediately after such transaction or series of related transactions, hold at least a majority of the voting power of the surviving or acquiring entity or (ii) a sale of all or substantially all the assets
of the Company. 
 (f)    “Code” means the Internal Revenue Code of 1986, as amended. 

 (g)    “Committee” means a committee of Directors appointed by the
Board in accordance with Section 4 hereof. 
 (h)    “Common Stock” means the Common Stock of the
Company. 
 (i)    “Company” means Acologix, Inc., a Delaware corporation. 
 (j)    “Consultant” means any person who is engaged by the Company or any Parent or Subsidiary to render consulting
or advisory services to such entity. 
 (k)    “Director” means a member of the Board of Directors of
the Company. 
 (l)    “Disability” means total and permanent disability as defined in
Section 22(e)(3) of the Code. 
 (m)    “Employee” means any person, including Officers and
Directors, employed by the Company or any Parent or Subsidiary of the Company. A Service Provider shall not cease to be an Employee in the case of (i) any leave of absence approved by the Company or (ii) transfers between locations of the
Company or between the Company, its Parent, any Subsidiary, or any successor. A leave of absence approved by the Company shall include sick leave, military leave, or any other leave of absence approved by an authorized representative of the Company.
For purposes of Incentive Stock Options, no such leave may exceed ninety days, unless reemployment upon expiration of such leave is guaranteed by statute or contract, including Company policies. If reemployment upon expiration of a leave of absence
approved by the Company is not so guaranteed, on the 181st day of such leave any Incentive Stock Option held by the Optionee shall cease to be treated as an Incentive Stock Option and shall be treated for tax purposes as a Nonstatutory Stock Option.
Neither service as a Director nor payment of a director’s fee by the Company shall be sufficient to constitute “employment” by the Company. 
 (n)    “Exchange Act” means the Securities Exchange Act of 1934, as amended. 
 (o)    “Fair Market Value” means, as of any date, the value of Common Stock determined as follows: 
 (i)    If the Common Stock is listed on any established stock exchange or a national market system, including without limitation the Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its
Fair Market Value shall be the closing sales price for such stock (or the closing bid, if no sales were reported) as quoted on such exchange or system for the last market trading day prior to the time of determination, as reported in The Wall
Street Journal or such other source as the Administrator deems reliable; 
 (ii)    If the Common Stock is regularly
quoted by a recognized securities dealer but selling prices are not reported, its Fair Market Value shall be the mean between the high bid and low asked prices for the Common Stock on the last market trading day prior to the day of determination; or

  

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 (iii)    In the absence of an established market for the Common Stock, the Fair
Market Value thereof shall be determined in good faith by the Administrator. 
 (p)    “Incentive Stock
Option” means an Option intended to qualify as an incentive stock option within the meaning of Section 422 of the Code. 
 (q)    “Involuntary Termination” means (i) a termination by the Company of the Optionee’s or Purchaser’s status as Service Provider other than for Cause; (ii) without the
Optionee’s or Purchaser’s consent, a material reduction of or variation in the Optionee’s or Purchaser’s duties, authority or responsibilities as in effect immediately prior to such reduction or variation; (iii) without the
Optionee’s or Purchaser’s consent, a material reduction in the base salary of the Optionee or Purchaser as in effect immediately prior to such reduction; (iv) without the Optionee’s or Purchaser’s consent, a material
reduction by the Company in the kind or level of employee benefits to which the Optionee’s or Purchaser’s overall benefits package is materially reduced; or (v) without the Optionee’s or Purchaser’s consent, the relocation
of the Optionee or Purchaser to a facility or location more than fifty (50) miles from the Optionee’s or Purchaser’s then present location. 
 (r)    “Nonstatutory Stock Option” means an Option not intended to qualify as an Incentive Stock Option. 
 (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)    “Option” means a stock
option granted pursuant to the Plan. 
 (u)    “Option Agreement” means a written or electronic
agreement between the Company and an Optionee evidencing the terms and conditions of an individual Option grant. The Option Agreement is subject to the terms and conditions of the Plan. 
 (v)    “Option Exchange Program” means a program whereby outstanding Options are exchanged for Options with a lower
exercise price. 
 (w)    “Optioned Stock” means the Common Stock subject to an Option or a Stock
Purchase Right. 
 (x)    “Optionee” means the holder of an outstanding Option or Stock Purchase Right
granted under the Plan. 
 (y)    “Parent” means a “parent corporation,” whether now or
hereafter existing, as defined in Section 424(e) of the Code. 
 (z)    “Plan” means this 2000
Incentive Stock Plan. 
 (aa)    “Purchaser” means the holder of Restricted Stock. 
 (bb)    “Restricted Stock” means shares of Common Stock acquired pursuant to the exercise of a Stock Purchase Right
or the exercise of an Option for Shares which have not yet vested. 
  

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 (cc)    “Service Provider” means an Employee, Director or
Consultant. 
 (dd)    “Share” means a share of the Common Stock, as adjusted in accordance with
Section 12 below. 
 (ee)    “Stock Purchase Right” means a right to purchase Common Stock pursuant
to Section 11 below. 
 (ff)    “Subsidiary” means a “subsidiary corporation,” whether
now or hereafter existing, as defined in Section 424(f) of the Code. 
 3.    Stock Subject to the Plan. Subject to the provisions of Section 12 of the Plan, the maximum aggregate number of Shares which may be subject to option and sold under the Plan is
7,462,800 Shares. The Shares may be authorized but unissued, or reacquired Common Stock. 
 If an Option or Stock Purchase Right expires or
becomes unexercisable without having been exercised in full, or is surrendered pursuant to an Option Exchange Program, the unpurchased Shares which were subject thereto shall become available for future grant or sale under the Plan (unless the Plan
has terminated). However, Shares that have actually been issued under the Plan, upon exercise of either an Option or Stock Purchase Right, shall not be returned to the Plan and shall not become available for future distribution under the Plan,
except that if Shares of Restricted Stock are repurchased by the Company at their original purchase price, such Shares shall become available for future grant under the Plan. 
 4.    Administration of the Plan. 
 (a)    Administrator. The Plan shall be administered by the Board or a Committee appointed by the Board, which Committee shall
be constituted to comply with Applicable Laws. 
 (b)    Powers of the Administrator. Subject to
the provisions of the Plan and, in the case of a Committee, the specific duties delegated by the Board to such Committee, and subject to the approval of any relevant authorities, the Administrator shall have the authority in its discretion:

 (i)    to determine the Fair Market Value; 
 (ii)    to select the Service Providers to whom Options and Stock Purchase Rights may from time to time be granted hereunder;

 (iii)    to determine the number of Shares to be covered by each such award granted hereunder; 
 (iv)    to approve forms of agreement for use under the Plan; 
 (v)    to determine the terms and conditions, of any Option or Stock Purchase Right granted hereunder. Such terms and conditions
include, but are not limited to, the exercise price, the time or times when Options or Stock Purchase Rights may be exercised (which may be based on performance criteria), any vesting acceleration or waiver of forfeiture restrictions, and any
restriction or 

  

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limitation regarding any Option or Stock Purchase Right or the Common Stock relating thereto, based in each case on such factors as the Administrator, in its
sole discretion, shall determine; 
 (vi)    to determine whether and under what circumstances an Option may be settled
in cash under subsection 9(e) instead of Common Stock; 
 (vii)    to reduce the exercise price of any Option to the
then current Fair Market Value if the Fair Market Value of the Common Stock covered by such Option has declined since the date the Option was granted; 
 (viii)    to initiate an Option Exchange Program; 
 (ix)    to
prescribe, amend and rescind rules and regulations relating to the Plan, including rules and regulations relating to sub-plans established for the purpose of qualifying for preferred tax treatment under foreign tax laws; 
 (x)    to allow Optionees to satisfy withholding tax obligations by electing to have the Company withhold from the Shares to be
issued upon exercise of an Option or Stock Purchase Right that number of Shares having a Fair Market Value equal to the amount required to be withheld. The Fair Market Value of the Shares to be withheld shall be determined on the date that the
amount of tax to be withheld is to be determined. All elections by Optionees to have Shares withheld for this purpose shall be made in such form and under such conditions as the Administrator may deem necessary or advisable; and 
 (xi)    to construe and interpret the terms of the Plan and awards granted pursuant to the Plan. 
 (c)    Effect of Administrator’s Decision. All decisions, determinations and interpretations of the
Administrator shall be final and binding on all Optionees. 
 5.    Eligibility. 
 (a)    Nonstatutory Stock Options and Stock Purchase Rights may be granted to Service Providers. Incentive Stock Options may be
granted only to Employees. 
 (b)    Each Option shall be designated in the Option Agreement as either an Incentive Stock
Option or a Nonstatutory Stock Option. However, notwithstanding such designation, to the extent that the aggregate Fair Market Value of the Shares with respect to which Incentive Stock Options are exercisable for the first time by the Optionee
during any calendar year (under all plans of the Company and any Parent or Subsidiary) exceeds $100,000, such Options shall be treated as Nonstatutory Stock Options. For purposes of this Section 5(b), Incentive Stock Options shall be taken into
account in the order in which they were granted. The Fair Market Value of the Shares shall be determined as of the time the Option with respect to such Shares is granted. 
 (c)    Neither the Plan nor any Option or Stock Purchase Right shall confer upon any Optionee any right with respect to continuing the Optionee’s relationship as a Service Provider with the

  

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Company, nor shall it interfere in any way with his or her right or the Company’s right to terminate such relationship at any time, with or without
cause. 
 6.    Term of Plan. Subject to Section 18, the Plan shall become effective upon its
adoption by the Board. It shall continue in effect for a term of ten (10) years unless sooner terminated under Section 14. 
 7.    Term of Option. The term of each Option shall be stated in the Option Agreement; provided, however, that the term shall be no more than ten (10) years from the date of grant thereof. In the case of an
Incentive Stock Option granted to an Optionee who, at the time the Option is granted, owns stock representing more than ten percent (10%) of the voting power of all classes of stock of the Company or any Parent or Subsidiary, the term of the
Option shall be five (5) years from the date of grant or such shorter term as may be provided in the Option Agreement. 
 8.    Option Exercise Price and Consideration. 
 (a)    The per share exercise price
for the Shares to be issued upon exercise of an Option shall be such price as is determined by the Administrator, but shall be subject to the following: 
 (i)    In the case of an Incentive Stock Option 
 (1)    granted to
an Employee who, at the time of grant of such Option, owns stock representing more than ten percent (10%) of the voting power of all classes of stock of the Company or any Parent or Subsidiary, the exercise price shall be no less than 110% of
the Fair Market Value per Share on the date of grant. 
 (2)    granted to any other Employee, the per Share exercise
price shall be no less than 100% of the Fair Market Value per Share on the date of grant. 
 (ii)    In the case of a
Nonstatutory Stock Option 
 (1)    granted to a Service Provider who, at the time of grant of such Option, owns stock
representing more than ten percent (10%) of the voting power of all classes of stock of the Company or any Parent or Subsidiary, the exercise price shall be no less than 110% of the Fair Market Value per Share on the date of the grant.

 (2)    granted to any other Service Provider, the per Share exercise price shall be no less than 85% of the Fair
Market Value per Share on the date of grant. 
 (iii)    Notwithstanding the foregoing, Options may be granted with a
per Share exercise price other than as required above pursuant to a merger or other corporate transaction. 
 (b)    The
consideration to be paid for the Shares to be issued upon exercise of an Option, including the method of payment, shall be determined by the Administrator (and, in the case of an Incentive Stock Option, shall be determined at the time of grant).
Such consideration may consist of (1) cash, (2) check, (3) promissory note, (4) other Shares which (x) in the case of Shares acquired upon 

  

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exercise of an Option, have been owned by the Optionee for more than six months on the date of surrender, and (y) have a Fair Market Value on the date
of surrender equal to the aggregate exercise price of the Shares as to which such Option shall be exercised, (5) consideration received by the Company under a cashless exercise program implemented by the Company in connection with the Plan, or
(6) any combination of the foregoing methods of payment. In making its determination as to the type of consideration to accept, the Administrator shall consider if acceptance of such consideration may be reasonably expected to benefit the
Company. 
 9.    Exercise of Option. 
 (a)    Procedure for Exercise; Rights as a Shareholder. Any Option granted hereunder shall be exercisable according
to the terms hereof at such times and under such conditions as determined by the Administrator and set forth in the Option Agreement. Unless the Administrator provides otherwise, vesting of Options granted hereunder shall be tolled during any unpaid
leave of absence. An Option may not be exercised for a fraction of a Share. 
 An Option shall be deemed exercised when the Company
receives: (i) written or electronic notice of exercise (in accordance with the Option Agreement) from the person entitled to exercise the Option, and (ii) full payment for the Shares with respect to which the Option is exercised. Full
payment may consist of any consideration and method of payment authorized by the Administrator and permitted by the Option Agreement and the Plan. Shares issued upon exercise of an Option shall be issued in the name of the Optionee or, if requested
by the Optionee, in the name of the Optionee and his or her spouse. Until the Shares are issued (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no right to vote or receive
dividends or any other rights as a shareholder shall exist with respect to the Shares, notwithstanding the exercise of the Option. The Company shall issue (or cause to be issued) such Shares promptly after the Option is exercised. No adjustment will
be made for a dividend or other right for which the record date is prior to the date the Shares are issued, except as provided in Section 12. 
 Exercise of an Option in any manner shall result in a decrease in the number of Shares thereafter available, both for purposes of the Plan and for sale under the Option, by the number of Shares as to which the Option is exercised.

 (b)    Termination of Relationship as a Service Provider. If an Optionee ceases to be a Service Provider,
such Optionee may exercise his or her Option within such period of time as is specified in the Option Agreement (of at least thirty (30) days) to the extent that the Option is vested on the date of termination (but in no event later than the
expiration of the term of the Option as set forth in the Option Agreement). In the absence of a specified time in the Option Agreement, the Option shall remain exercisable for three (3) months following the Optionee’s termination. If, on
the date of termination, the Optionee is not vested as to his or her entire Option, the Shares covered by the unvested portion of the Option shall revert to the Plan. If, after termination, the Optionee does not exercise his or her Option within the
time specified by the Administrator, the Option shall terminate, and the Shares covered by such Option shall revert to the Plan. 
  

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 In the event an Optionee ceases to be an Employee but otherwise remains a Service Provider, such
Employee’s Incentive Stock Option shall automatically convert to a Nonstatutory Stock Option on the date 91 days following such change of status. 
 (c)    Disability of Optionee. If an Optionee ceases to be a Service Provider as a result of the Optionee’s Disability, the Optionee may exercise his or her Option within such period of
time as is specified in the Option Agreement (of at least 180 days) to the extent the Option is vested on the date of termination (but in no event later than the expiration of the term of such Option as set forth in the Option Agreement). In the
absence of a specified time in the Option Agreement, the Option shall remain exercisable for 365 days following the Optionee’s termination. If, on the date of termination, the Optionee is not vested as to his or her entire Option, the Shares
covered by the unvested portion of the Option shall revert to the Plan. If, after termination, the Optionee does not exercise his or her Option within the time specified herein, the Option shall terminate, and the Shares covered by such Option shall
revert to the Plan. 
 (d)    Death of Optionee. If an Optionee dies while a Service Provider, the
Option may be exercised within such period of time as is specified in the Option Agreement (of at least 180 days) to the extent that the Option is vested on the date of death (but in no event later than the expiration of the term of such Option as
set forth in the Option Agreement) by the Optionee’s estate or by a person who acquires the right to exercise the Option by bequest or inheritance. In the absence of a specified time in the Option Agreement, the Option shall remain exercisable
for 365 days following the Optionee’s termination. If, at the time of death, the Optionee is not vested as to the entire Option, the Shares covered by the unvested portion of the Option shall immediately revert to the Plan. If the Option is not
so exercised within the time specified herein, the Option shall terminate, and the Shares covered by such Option shall revert to the Plan. 
 (e)    Buyout Provisions. The Administrator may at any time offer to buy out for a payment in cash or Shares, an Option previously granted, based on such terms and conditions as the Administrator shall establish
and communicate to the Optionee at the time that such offer is made. 
 10.    Non-Transferability of Options and Stock Purchase Rights. Options and Stock Purchase Rights may not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any manner other than
by will or by the laws of descent or distribution and may be exercised, during the lifetime of the Optionee, only by the Optionee. 
 11.    Stock Purchase Rights. 
 (a)    Rights to Purchase. Stock Purchase
Rights may be issued either alone, in addition to, or in tandem with other awards granted under the Plan and/or cash awards made outside of the Plan. After the Administrator determines that it will offer Stock Purchase Rights under the Plan, it
shall advise the offeree in writing or electronically of the terms, conditions and restrictions related to the offer, including the number of Shares that such person shall be entitled to purchase, the price to be paid, and the time within which such
person must accept such offer. The offer shall be accepted by execution of a Restricted Stock purchase agreement in the form determined by the Administrator. 
  

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 (b)    Repurchase Option. Unless the Administrator determines otherwise, the
Restricted Stock purchase agreement shall grant the Company a repurchase option exercisable upon the voluntary or involuntary termination of the Purchaser’s service with the Company for any reason (including death or disability). The purchase
price for Shares repurchased pursuant to the Restricted Stock purchase agreement shall be the original price paid by the Purchaser and may be paid by cancellation of any indebtedness of the Purchaser to the Company. The repurchase option shall lapse
at such rate as the Administrator may determine. 
 (c)    Other Provisions. The Restricted Stock purchase
agreement shall contain such other terms, provisions and conditions not inconsistent with the Plan as may be determined by the Administrator in its sole discretion. 
 (d)    Rights as a Shareholder. Once the Stock Purchase Right is exercised, the Purchaser shall have rights equivalent to those of a shareholder and shall be a shareholder when his or her
purchase is entered upon the records of the duly authorized transfer agent of the Company. No adjustment shall be made for a dividend or other right for which the record date is prior to the date the Stock Purchase Right is exercised, except as
provided in Section 12 of the Plan. 
 12.    Adjustments Upon Changes in Capitalization,
Merger or Asset Sale. 
 (a)    Changes in Capitalization. Subject to any required action by the shareholders
of the Company, the number of shares of Common Stock covered by each outstanding Option or Stock Purchase Right, and the number of shares of Common Stock which have been authorized for issuance under the Plan but as to which no Options or Stock
Purchase Rights have yet been granted or which have been returned to the Plan upon cancellation or expiration of an Option or Stock Purchase Right, as well as the price per share of Common Stock covered by each such outstanding Option or Stock
Purchase Right, shall be proportionately adjusted for any increase or decrease in the number of issued shares of Common Stock resulting from a stock split, reverse stock split, stock dividend, combination or reclassification of the Common Stock, or
any other increase or decrease in the number of issued shares of Common Stock effected without receipt of consideration by the Company. The conversion of any convertible securities of the Company shall not be deemed to have been “effected
without receipt of consideration.” Such adjustment shall be made by the Board, whose determination in that respect shall be final, binding and conclusive. Except as expressly provided herein, no issuance by the Company of shares of stock of any
class, or securities convertible into shares of stock of any class, shall affect, and no adjustment by reason thereof shall be made with respect to, the number or price of shares of Common Stock subject to an Option or Stock Purchase Right.

 (b)    Dissolution or Liquidation. In the event of the proposed dissolution or liquidation of the Company, the
Administrator shall notify each Optionee as soon as practicable prior to the effective date of such proposed transaction. The Administrator in its discretion may provide for an Optionee to have the right to exercise his or her Option or Stock
Purchase Right until fifteen (15) days prior to such transaction as to all of the Optioned Stock covered thereby, including Shares as to which the Option or Stock Purchase Right would not otherwise be exercisable. In addition, the Administrator
may provide that any Company repurchase option applicable to any Shares purchased upon exercise of an Option or Stock Purchase Right shall lapse as to all such Shares, provided the proposed dissolution or 

  

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liquidation takes place at the time and in the manner contemplated. To the extent it has not been previously exercised, an Option or Stock Purchase Right
will terminate immediately prior to the consummation of such proposed action. 
 (c)    Merger or Asset Sale.

 (i)    In the event of (1) a merger of the Company with or into another corporation or (2) the sale of
substantially all of the assets of the Company (either, a “Merger Transaction”), each outstanding Option and Stock Purchase Right shall be assumed or an equivalent option or right substituted by the successor corporation or a Parent
or Subsidiary of the successor corporation. In the event that the successor corporation refuses to assume or substitute for the Option or Stock Purchase Right, the Optionee shall fully vest in and have the right to exercise the Option or Stock
Purchase Right as to all of the Optioned Stock, including Shares as to which it would not otherwise be vested or exercisable. If an Option or Stock Purchase Right becomes fully vested and exercisable in lieu of assumption or substitution in the
event of a Merger Transaction, the Administrator shall notify the Optionee in writing or electronically that the Option or Stock Purchase Right shall be fully exercisable for a period of three (3) months from the date of such notice, and the
Option or Stock Purchase Right shall terminate upon the expiration of such period. For the purposes of this paragraph, the Option or Stock Purchase Right shall be considered assumed if, following the Merger Transaction, the option or right confers
the right to purchase or receive, for each Share of Optioned Stock subject to the Option or Stock Purchase Right immediately prior to the Merger Transaction, the consideration (whether stock, cash, or other securities or property) received in the
Merger Transaction by holders of Common Stock for each Share held on the effective date of the transaction (and if holders were offered a choice of consideration, the type of consideration chosen by the holders of a majority of the outstanding
Shares); provided, however, that if such consideration received in the Merger Transaction is not solely common stock of the successor corporation or its Parent, the Administrator may, with the consent of the successor corporation, provide for the
consideration to be received upon the exercise of the Option or Stock Purchase Right, for each Share of Optioned Stock subject to the Option or Stock Purchase Right, to be solely common stock of the successor corporation or its Parent equal in fair
market value to the per share consideration received by holders of Common Stock in the Merger Transaction. 
 (ii)    Vesting Acceleration. Following either an assumption of or substitution for Options or Stock Purchase Rights in connection with a Merger Transaction that constitutes a Change of Control and in the event of
an Involuntary Termination of an Optionee or a Purchaser upon or during the six (6) month period after the effective date of such Change of Control, (1) such Optionee’s rights to purchase Optioned Stock shall become automatically
vested in their entirety on an accelerated basis and be fully exercisable as of the date immediately preceding any such Involuntary Termination and (2) all of the Company’s rights to repurchase Restricted Stock from such Purchaser under
all such Purchaser’s Restricted Stock purchase agreements shall lapse in their entirety on an accelerated basis as of the date immediately preceding any such Involuntary Termination. 
 13.    Time of Granting Options and Stock Purchase Rights. The date of grant of an Option or Stock Purchase
Right shall, for all purposes, be the date on which the Administrator makes the determination granting such Option or Stock Purchase Right, or such other date as is determined by the 

  

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Administrator. Notice of the determination shall be given to each Employee or Consultant to whom an Option or Stock Purchase Right is so granted within a
reasonable time after the date of such grant. 
 14.    Amendment and Termination of the Plan. 
 (a)    Amendment and Termination. The Board may at any time amend, alter, suspend or terminate the Plan. 
 (b)    Shareholder Approval. The Board shall obtain shareholder approval of any Plan amendment to the extent necessary and desirable to comply with Applicable Laws. 
 (c)    Effect of Amendment or Termination. No amendment, alteration, suspension or termination of the Plan
shall impair the rights of any Optionee, unless mutually agreed otherwise between the Optionee and the Administrator, which agreement must be in writing and signed by the Optionee and the Company. Termination of the Plan shall not affect the
Administrator’s ability to exercise the powers granted to it hereunder with respect to Options granted under the Plan prior to the date of such termination. 
 15.    Conditions Upon Issuance of Shares. 
 (a)    Legal Compliance. Shares shall not be issued pursuant to the exercise of an Option unless the exercise of such Option and the issuance and delivery of such Shares shall comply with Applicable Laws and shall
be further subject to the approval of counsel for the Company with respect to such compliance. 
 (b)    Investment
Representations. As a condition to the exercise of an Option, the Administrator may require the person exercising such Option to represent and warrant at the time of any such exercise that the Shares are being purchased only for investment and
without any present intention to sell or distribute such Shares if, in the opinion of counsel for the Company, such a representation is required. 
 16.    Inability to Obtain Authority. The inability of the Company to obtain authority from any regulatory body having jurisdiction, which authority is deemed by the Company’s counsel to be necessary to the
lawful issuance and sale of any Shares hereunder, shall relieve the Company of any liability in respect of the failure to issue or sell such Shares as to which such requisite authority shall not have been obtained. 
 17.    Reservation of Shares. The Company, during the term of this Plan, shall at all times reserve and keep
available such number of Shares as shall be sufficient to satisfy the requirements of the Plan. 
 18.     Shareholder
Approval. The Plan shall be subject to approval by the shareholders of the Company within twelve (12) months after the date the Plan is adopted. Such shareholder approval shall be obtained in the degree and manner required under Applicable
Laws. 
  

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 ACOLOGIX, INC. 
 AMENDED AND RESTATED 2000 INCENTIVE STOCK PLAN 
 STOCK OPTION AGREEMENT — EARLY EXERCISE

 Unless otherwise defined herein, the terms defined in the Amended and Restated 2000 Incentive Stock Plan (the “Plan”) shall
have the same defined meanings in this Stock Option Agreement (the “Option Agreement”). 
  

	I.	NOTICE OF GRANT 

 Name: 
 Address: 
 You have been granted an
option to purchase Common Stock of the Company, subject to the terms and conditions of the Plan and this Option Agreement, as follows: 
  

			
	 Grant Number
	  	_________________________
		
	 Date of Grant
	  	_________________________
		
	 Vesting Commencement Date
	  	_________________________
		
	 Exercise Price per Share
	  	$ _______________________
		
	 Total Number of Shares Granted
	  	_________________________
		
	 Total Exercise Price
	  	$ _______________________
		
	 Type of Option:
	  	 ̈ Incentive Stock Option
		
		  	 ̈ Nonstatutory Stock Option
		
	 Term/Expiration Date:
	  	Ten Years from Date of Grant

 Exercise and Vesting Schedule: 
 So long as Optionee is a Service Provider, this Option shall be exercisable in whole or in part, and shall vest according to the following vesting
schedule: 
 One-fourth (1/4th) of the shares of Common Stock subject to the option shall vest on the first anniversary of the Vesting Commencement Date and an additional one forty-eighth (1/48th) of the total number of shares of Common Stock subject to the option shall vest on the first day of each full month thereafter, provided that the
Optionee continues to be a Service Provider as defined in the Plan on such dates. 

 Termination Period: 
 This Option may be exercised, to the extent it is then vested, for three months after Optionee ceases to be a Service Provider. Upon death or Disability of the Optionee, this Option may be exercised, to the extent it
is then vested, for one year after Optionee ceases to be Service Provider. In no event shall this Option be exercised later than the Term/Expiration Date as provided above. 
  

	II.	AGREEMENT 

 1. Grant of Option. The
Administrator of the Company hereby grants to the Optionee named in the Notice of Grant (the “Optionee”), an option (the “Option”) to purchase the number of Shares set forth in the Notice of Grant, at the exercise price per Share
set forth in the Notice of Grant (the “Exercise Price”), and subject to the terms and conditions of the Plan, which is incorporated herein by reference. Subject to Section 14(c) of the Plan, in the event of a conflict between the
terms and conditions of the Plan and this Option Agreement, the terms and conditions of the Plan shall prevail. 
 If
designated in the Notice of Grant as an Incentive Stock Option (“ISO”), this Option is intended to qualify as an Incentive Stock Option as defined in Section 422 of the Code. Nevertheless, to the extent that it exceeds the $100,000
rule of Code Section 422(d), this Option shall be treated as a Nonstatutory Stock Option (“NSO”). 
 2. Exercise of
Option. This Option shall be exercisable during its term in accordance with the provisions of Section 9 of the Plan as follows: 
 (a) Right to Exercise. 
 (i) Subject to subsections 2(a)(ii) and 2(a)(iii) below, this
Option shall be exercisable cumulatively according to the vesting schedule set forth in the Notice of Grant. Alternatively, at the election of the Optionee, this Option may be exercised in whole or in part at any time as to Shares that have not yet
vested. Vested Shares shall not be subject to the Company’s repurchase right (as set forth in the Restricted Stock Purchase Agreement, attached hereto as Exhibit C-1). 
 (ii) As a condition to exercising this Option for unvested Shares, the Optionee shall execute the Restricted Stock Purchase Agreement.

 (iii) This Option may not be exercised for a fraction of a Share. 
 (b) Method of Exercise. This Option shall be exercisable by delivery of an exercise notice in the form attached as Exhibit A
(the “Exercise Notice”) which shall state the election to exercise the Option, the number of Shares with respect to which the Option is being exercised, and such other representations and agreements as may be required by the Company. The
Exercise Notice shall be accompanied by payment of the aggregate Exercise Price as to all Exercised Shares. This Option shall be deemed to be exercised upon receipt by the Company of such fully executed Exercise Notice accompanied by the aggregate
Exercise Price. 
  

 -2- 

 No Shares shall be issued pursuant to the exercise of an Option unless such issuance and
such exercise complies with Applicable Laws. Assuming such compliance, for income tax purposes the Shares shall be considered transferred to the Optionee on the date on which the Option is exercised with respect to such Shares. 
 3. Optionee’s Representations. In the event the Shares have not been registered under the Securities Act of 1933 (the “Securities
Act”), as amended, at the time this Option is exercised, the Optionee shall, if required by the Company, concurrently with the exercise of all or any portion of this Option, deliver to the Company his or her Investment Representation Statement
in the form attached hereto as Exhibit B, and shall read the applicable rules of the Commissioner of Corporations attached to such Investment Representation Statement. 
 4. Lock-Up Period. Optionee hereby agrees that Optionee shall not offer, pledge, sell, contract to sell, sell any option or contract to purchase,
purchase any option or contract to sell, grant any option, right or warrant to purchase, lend, or otherwise transfer or dispose of, directly or indirectly, any Common Stock (or other securities) of the Company or enter into any swap, hedging or
other arrangement that transfers to another, in whole or in part, any of the economic consequences of ownership of any Common Stock (or other securities) of the Company held by Optionee (other than those included in the registration) for a period
specified by the representative of the underwriters of Common Stock (or other securities) of the Company not to exceed one hundred eighty (180) days following the effective date of a registration statement of the Company filed under the
Securities Act. 
 Optionee agrees to execute and deliver such other agreements as may be reasonably requested by the Company
or the underwriter which are consistent with the foregoing or which are necessary to give further effect thereto. In addition, if requested by the Company or the representative of the underwriters of Common Stock (or other securities) of the
Company, Optionee shall provide, within ten (10) days of such request, such information as may be required by the Company or such representative in connection with the completion of any public offering of the Company’s securities pursuant
to a registration statement filed under the Securities Act. The obligations described in this Section shall not apply to 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 a registration relating solely to a Commission Rule 145 transaction on Form S-4 or similar forms that may be promulgated in the future. The Company may impose stop-transfer instructions with respect to the shares of Common Stock (or other
securities) subject to the foregoing restriction until the end of said one hundred eighty (180) day period. Optionee agrees that any transferee of any Option shall be bound by this Section. 
 5. Method of Payment. Payment of the aggregate Exercise Price shall be by any of the following, or a combination thereof, at the election of the
Optionee: 
 (a) cash; 
 (b) check; 
 (c) consideration received by the Company under a formal cashless exercise
program adopted by the Company in connection with the Plan; or 
  

 -3- 

 (d) surrender of other Shares, provided Shares acquired from the Company, either directly
or indirectly, (i) have been owned by the Optionee for more than six (6) months on the date of surrender, and (ii) have a Fair Market Value on the date of surrender equal to the aggregate Exercise Price of the Exercised Shares.

 6. Restrictions on Exercise. This Option may not be exercised until such time as the Plan has been approved by the shareholders of
the Company, or if the issuance of such Shares upon such exercise or the method of payment of consideration for such shares would constitute a violation of any Applicable Law. 
 7. Non-Transferability of Option. This Option may not be transferred in any manner otherwise than by will or by the laws of descent or
distribution and may be exercised during the lifetime of Optionee only by Optionee. The terms of the Plan and this Option Agreement shall be binding upon the executors, administrators, heirs, successors and assigns of the Optionee. 
 8. Term of Option. This Option may be exercised only within the term set out in the Notice of Grant, and may be exercised during such term only in
accordance with the Plan and the terms of this Option. 
 9. Tax Obligations. 
 (a) Withholding Taxes. Optionee agrees to make appropriate arrangements with the Company (or the Parent or Subsidiary employing or
retaining Optionee) for the satisfaction of all Federal, state, local and foreign income and employment tax withholding requirements applicable to the Option exercise. Optionee acknowledges and agrees that the Company may refuse to honor the
exercise and refuse to deliver Shares if such withholding amounts are not delivered at the time of exercise. 
 (b) Notice
of Disqualifying Disposition of ISO Shares. If the Option granted to Optionee herein is an ISO, and if Optionee sells or otherwise disposes of any of the Shares acquired pursuant to the ISO on or before the later of (1) the date two years
after the Date of Grant, or (2) the date one year after the date of exercise, the Optionee shall immediately notify the Company in writing of such disposition. Optionee agrees that Optionee may be subject to income tax withholding by the
Company on the compensation income recognized by the Optionee. 
 (c) Section 83(b) Election for Unvested Shares
Purchased Pursuant to Options. With respect to the exercise of an Option for unvested Shares, an election (the “Election”) may be filed by the Optionee with the Internal Revenue Service, within 30 days of the purchase of the
Shares, electing pursuant to Section 83(b) of the Code to be taxed currently on any difference between the purchase price of the Shares and their Fair Market Value on the date of purchase. Optionee is strongly encouraged to seek the advice of
his or her own tax consultants in connection with the purchase of the Shares and the advisability of filing of the Election under Section 83(b) of the Code. A form of Election under Section 83(b) is attached hereto as Exhibit C-5
for reference. 
 OPTIONEE ACKNOWLEDGES THAT IT IS OPTIONEE’S SOLE RESPONSIBILITY AND NOT THE COMPANY’S TO FILE
TIMELY THE ELECTION UNDER SECTION 83(b), EVEN IF OPTIONEE REQUESTS THE COMPANY OR ITS REPRESENTATIVE TO MAKE THIS FILING ON OPTIONEE’S BEHALF. 
  

 -4- 

 10. Entire Agreement; Governing Law. The Plan is incorporated herein by reference. The Plan and
this Option Agreement constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements of the Company and Optionee with respect to the subject matter
hereof, and may not be modified adversely to the Optionee’s interest except by means of a writing signed by the Company and Optionee. This Option Agreement is governed by the internal substantive laws but not the choice of law rules of
California. 
 11. No Guarantee of Continued Service. OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE
VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE PROVIDER AT THE WILL OF THE COMPANY (NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED THIS OPTION OR ACQUIRING SHARES HEREUNDER). OPTIONEE FURTHER ACKNOWLEDGES AND AGREES THAT THIS
AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND SHALL
NOT INTERFERE IN ANY WAY WITH OPTIONEE’S RIGHT OR THE COMPANY’S RIGHT TO TERMINATE OPTIONEE’S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR WITHOUT CAUSE. 
 Optionee acknowledges receipt of a copy of the Plan and represents that he or she is familiar with the terms and provisions thereof, and
hereby accepts this Option subject to all of the terms and provisions thereof. Optionee has reviewed the Plan and this Option in their entirety, has had an opportunity to obtain the advice of counsel prior to executing this Option and fully
understands all provisions of the Option. Optionee hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the Administrator upon any questions arising under the Plan or this Option. Optionee further agrees to
notify the Company upon any change in the residence address indicated below. 
  

									
	OPTIONEE	 		 	ACOLOGIX, INC.
			
	  	 		 	  
	Signature	 		 	By
			
	  	 		 	 President & CEO

	Print Name	 		 	Title
			
	  	 		 	
			
	  	 		 	
	 Residence Address
	 		 	

  

 -5- 

 EXHIBIT A 
 AMENDED AND RESTATED 2000 INCENTIVE STOCK PLAN 
 EXERCISE NOTICE 
 Acologix, Inc. 
 6121 Hollis Street 
 Emeryville, CA 94608 
 Attention: Corporate Secretary 
 1. Exercise of Option. Effective as of today, ________________,
____, the undersigned (“Optionee”) hereby elects to exercise Optionee’s option (the “Option”) to purchase ________________ shares of the Common Stock (the “Shares”) of Acologix, Inc. (the “Company”) under
and pursuant to the Amended and Restated 2000 Incentive Stock Plan (the “Plan”) and the Stock Option Agreement dated ______________, _____ (the “Option Agreement”). 
 2. Delivery of Payment. Purchaser herewith delivers to the Company the full purchase price of the Shares, as set forth in the Option Agreement,
and any and all withholding taxes due in connection with the exercise of the Option. 
 3. Representations of Optionee. Optionee
acknowledges that Optionee has received, read and understood the Plan and the Option Agreement and agrees to abide by and be bound by their terms and conditions. 
 4. Rights as Shareholder. Until the issuance of the Shares (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no right to vote or receive
dividends or any other rights as a shareholder shall exist with respect to the optioned stock, notwithstanding the exercise of the Option. The Shares shall be issued to the Optionee as soon as practicable after the Option is exercised. No adjustment
shall be made for a dividend or other right for which the record date is prior to the date of issuance except as provided in Section 12 of the Plan. 
 5. Company’s Right of First Refusal. Before any Shares held by Optionee or any transferee (either being sometimes referred to herein as the “Holder”) may be sold or otherwise transferred
(including transfer by gift or operation of law), the Company or its assignee(s) shall have a right of first refusal to purchase the Shares on the terms and conditions set forth in this Section (the “Right of First Refusal”). 

(a) Notice of Proposed Transfer. The Holder of the Shares shall deliver to the Company a written notice (the “Notice”)
stating: (i) the Holder’s bona fide intention to sell or otherwise transfer such Shares; (ii) the name of each proposed purchaser or other transferee (“Proposed Transferee”); (iii) the number of Shares to be transferred
to each Proposed Transferee; and (iv) the bona fide cash price or other consideration for which the Holder proposes to transfer the 

 
Shares (the “Offered Price”), and the Holder shall offer the Shares at the Offered Price to the Company or its assignee(s). 
 (b) Exercise of Right of First Refusal. At any time within thirty (30) days after receipt of the Notice, the Company and/or
its assignee(s) may, by giving written notice to the Holder, elect to purchase all, but not less than all, of the Shares proposed to be transferred to any one or more of the Proposed Transferees, at the purchase price determined in accordance with
subsection (c) below. 
 (c) Purchase Price. The purchase price (“Purchase Price”) for the Shares
purchased by the Company or its assignee(s) under this Section shall be the Offered Price. If the Offered Price includes consideration other than cash, the cash equivalent value of the non-cash consideration shall be determined by the Board of
Directors of the Company in good faith. 
 (d) Payment. Payment of the Purchase Price shall be made, at the option of
the Company or its assignee(s), in cash (by check), by cancellation of all or a portion of any outstanding indebtedness of the Holder to the Company (or, in the case of repurchase by an assignee, to the assignee), or by any combination thereof
within 30 days after receipt of the Notice or in the manner and at the times set forth in the Notice. 
 (e) Holder’s
Right to Transfer. If all of the Shares proposed in the Notice to be transferred to a given Proposed Transferee are not purchased by the Company and/or its assignee(s) as provided in this Section, then the Holder may sell or otherwise transfer
such Shares to that Proposed Transferee at the Offered Price or at a higher price, provided that such sale or other transfer is consummated within 120 days after the date of the Notice, that any such sale or other transfer is effected in accordance
with any applicable securities laws and that the Proposed Transferee agrees in writing that the provisions of this Section shall continue to apply to the Shares in the hands of such Proposed Transferee. If the Shares described in the Notice are not
transferred to the Proposed Transferee within such period, a new Notice shall be given to the Company, and the Company and/or its assignees shall again be offered the Right of First Refusal before any Shares held by the Holder may be sold or
otherwise transferred. 
 (f) Exception for Certain Family Transfers. Anything to the contrary contained in this
Section notwithstanding, the transfer of any or all of the Shares during the Optionee’s lifetime or on the Optionee’s death by will or intestacy to the Optionee’s immediate family or a trust for the benefit of the Optionee’s
immediate family shall be exempt from the provisions of this Section. “Immediate Family” as used herein shall mean spouse, lineal descendant or antecedent, father, mother, brother or sister. In such case, the transferee or other recipient
shall receive and hold the Shares so transferred subject to the provisions of this Section, and there shall be no further transfer of such Shares except in accordance with the terms of this Section. 
 (g) Termination of Right of First Refusal. The Right of First Refusal shall terminate as to any Shares upon the first sale of
Common Stock of the Company to the general public pursuant to a registration statement filed with and declared effective by the Securities and Exchange Commission under the Securities Act of 1933, as amended. 
  

 -2- 

 6. Tax Consultation. Optionee understands that Optionee may suffer adverse tax consequences as a
result of Optionee’s purchase or disposition of the Shares. Optionee represents that Optionee has consulted with any tax consultants Optionee deems advisable in connection with the purchase or disposition of the Shares and that Optionee is not
relying on the Company for any tax advice. 
 7. Restrictive Legends and Stop-Transfer Orders. 
 (a) Legends. Optionee understands and agrees that the Company shall cause the legends set forth below or legends substantially
equivalent thereto, to be placed upon any certificate(s) evidencing ownership of the Shares together with any other legends that may be required by the Company or by state or federal securities laws: 
 THE SECURITIES REPRESENTED HEREBY HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933 (THE “ACT”) AND MAY NOT BE OFFERED, SOLD OR
OTHERWISE TRANSFERRED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER THE ACT OR, IN THE OPINION OF COMPANY COUNSEL SATISFACTORY TO THE ISSUER OF THESE SECURITIES, SUCH OFFER, SALE OR TRANSFER, PLEDGE OR HYPOTHECATION IS IN COMPLIANCE
THEREWITH. 
 THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN RESTRICTIONS ON TRANSFER AND RIGHT OF FIRST REFUSAL OPTIONS
HELD BY THE ISSUER OR ITS ASSIGNEE(S) AS SET FORTH IN THE EXERCISE NOTICE BETWEEN THE ISSUER AND THE ORIGINAL HOLDER OF THESE SHARES, A COPY OF WHICH MAY BE OBTAINED AT THE PRINCIPAL OFFICE OF THE ISSUER. SUCH TRANSFER RESTRICTIONS AND RIGHT OF
FIRST REFUSAL ARE BINDING ON TRANSFEREES OF THESE SHARES. 
 THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO RESTRICTIONS ON
TRANSFER FOR A PERIOD NOT TO EXCEED 180 DAYS FOLLOWING THE EFFECTIVE DATE OF UNDERWRITTEN PUBLIC OFFERING OF THE COMPANY’S SECURITIES AND MAY NOT BE SOLD OR OTHERWISE DISPOSED OF BY THE HOLDER WITHOUT THE CONSENT OF THE COMPANY OR THE MANAGING
UNDERWRITER. 
 (b) Stop-Transfer Notices. Optionee agrees that, in order to ensure compliance with the restrictions
referred to herein, the Company may issue appropriate “stop transfer” instructions to its transfer agent, if any, and that, if the Company transfers its own securities, it may make appropriate notations to the same effect in its own
records. 
 (c) Refusal to Transfer. The Company shall not be required (i) to transfer on its books any Shares
that have been sold or otherwise transferred in violation of any of the provisions of 

  

 -3- 

 
this Exercise Notice or (ii) to treat as owner of such Shares or to accord the right to vote or pay dividends to any purchaser or other transferee to
whom such Shares shall have been so transferred. 
 8. Successors and Assigns. The Company may assign any of its rights under this
Exercise Notice to single or multiple assignees, and the terms and conditions of this Exercise Notice shall inure to the benefit of the successors and assigns of the Company. Subject to the restrictions on transfer herein set forth, the terms and
conditions of this Exercise Notice shall be binding upon Optionee and his or her heirs, executors, administrators, successors and assigns. 
 9. Interpretation. Any dispute regarding the interpretation of this Exercise Notice shall be submitted by Optionee or by the Company forthwith to the Administrator which shall review such dispute at its next regular meeting. The
resolution of such a dispute by the Administrator shall be final and binding on all parties. 
 10. Governing Law; Severability. This
Exercise Notice is governed by the internal substantive laws, but not the choice of law rules, of California. 
 11. Entire Agreement.
The Plan and Option Agreement are incorporated herein by reference. This Exercise Notice, the Plan, the Restricted Stock Purchase Agreement, the Option Agreement and the Investment Representation Statement constitute the entire agreement of the
parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements of the Company and Optionee with respect to the subject matter hereof, and may not be modified adversely to the Optionee’s
interest except by means of a writing signed by the Company and Optionee. 
  

									
	Submitted by:	 		 	 Accepted by:

			
	OPTIONEE	 		 	ACOLOGIX, INC.
			
	  	 		 	  
	Signature	 		 	By
			
	  	 		 	 President & CEO

	Print Name	 		 	Its
			
	Address:	 		 	Address:
			
	  	 		 	Acologix, Inc.
	  	 		 	6121 Hollis Street
	  	 		 	Emeryville, CA 94608
			
		 		 	  
		 		 	Date Received

  

 -4- 

 EXHIBIT B 
 INVESTMENT REPRESENTATION STATEMENT 
  

					
	OPTIONEE	  	:	  	
			
	COMPANY	  	:	  	ACOLOGIX, INC.
			
	SECURITY	  	:	  	COMMON STOCK
			
	AMOUNT	  	:	  	
			
	DATE	  	:	  	

 In connection with the purchase of the above-listed Securities, the undersigned Optionee represents to the Company
the following: 
 (a) Optionee is aware of the Company’s business affairs and financial condition and has acquired
sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Securities. Optionee is acquiring these Securities for investment for Optionee’s own account only and not with a view to, or for resale in
connection with, any “distribution” thereof within the meaning of the Securities Act of 1933, as amended (the “Securities Act”). 
 (b) Optionee acknowledges and understands that the Securities constitute “restricted securities” under the Securities Act and have not been registered under the Securities Act in reliance upon a specific
exemption therefrom, which exemption depends upon, among other things, the bona fide nature of Optionee’s investment intent as expressed herein. In this connection, Optionee understands that, in the view of the Securities and Exchange
Commission, the statutory basis for such exemption may be unavailable if Optionee’s representation was predicated solely upon a present intention to hold these Securities for the minimum capital gains period specified under tax statutes, for a
deferred sale, for or until an increase or decrease in the market price of the Securities, or for a period of one year or any other fixed period in the future. Optionee further understands that the Securities must be held indefinitely unless they
are subsequently registered under the Securities Act or an exemption from such registration is available. Optionee further acknowledges and understands that the Company is under no obligation to register the Securities. Optionee understands that the
certificate evidencing the Securities will be imprinted with a legend which prohibits the transfer of the Securities unless they are registered or such registration is not required in the opinion of counsel satisfactory to the Company, a legend
prohibiting their transfer during a lock-up period not to exceed 180 days and with any other legend required under applicable state securities laws. 
 (c) Optionee is familiar with the provisions of Rule 701 and Rule 144, each promulgated under the Securities Act, which, in substance, permit limited public resale of “restricted securities” acquired,
directly or indirectly from the issuer thereof, in a non-public offering subject to 

 
the satisfaction of certain conditions. Rule 701 provides that if the issuer qualifies under Rule 701 at the time of the grant of the Option to the
Optionee, the exercise will be exempt from registration under the Securities Act. In the event the Company becomes subject to the reporting requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, ninety (90) days
thereafter (or such longer period as any market stand-off agreement may require) the Securities exempt under Rule 701 may be resold, subject to the satisfaction of certain of the conditions specified by Rule 144, including: (1) the
resale being made through a broker in an unsolicited “broker’s transaction” or in transactions directly with a market maker (as said term is defined under the Securities Exchange Act of 1934); and, in the case of an affiliate,
(2) the availability of certain public information about the Company, (3) the amount of Securities being sold during any three month period not exceeding the limitations specified in Rule 144(e), and (4) the timely filing of a
Form 144, if applicable. 
 In the event that the Company does not qualify under Rule 701 at the time of grant of the
Option, then the Securities may be resold in certain limited circumstances subject to the provisions of Rule 144, which requires the resale to occur not less than one year after the later of the date the Securities were sold by the Company
or the date the Securities were sold by an affiliate of the Company, within the meaning of Rule 144; and, in the case of acquisition of the Securities by an affiliate, or by a non-affiliate who subsequently holds the Securities less than two
years, the satisfaction of the conditions set forth in sections (1), (2), (3) and (4) of the paragraph immediately above. 
 (d) Optionee further understands that in the event all of the applicable requirements of Rule 701 or 144 are not satisfied, registration under the Securities Act, compliance with Regulation A, or some other registration exemption will
be required; and that, notwithstanding the fact that Rules 144 and 701 are not exclusive, the Staff of the Securities and Exchange Commission has expressed its opinion that persons proposing to sell private placement securities other than in a
registered offering and otherwise than pursuant to Rules 144 or 701 will have a substantial burden of proof in establishing that an exemption from registration is available for such offers or sales, and that such persons and their respective brokers
who participate in such transactions do so at their own risk. Optionee understands that no assurances can be given that any such other registration exemption will be available in such event. 
  

	
	Signature of Optionee:
	
	   
	
	Date: ____________________________

  

 -2- 

 EXHIBIT C-1 
 ACOLOGIX, INC. 
 AMENDED AND RESTATED 2000 INCENTIVE STOCK PLAN 
 RESTRICTED STOCK PURCHASE AGREEMENT 
 THIS AGREEMENT is made between _____________________________ (the “Purchaser”) and Acologix, Inc. (the “Company”) as of __________________, ____. 
 Unless otherwise defined herein, the terms defined in the Amended and Restated 2000 Incentive Stock Plan (the “Plan”) shall have the same
defined meanings in this Agreement. 
 RECITALS 
 A. Pursuant to the exercise of the option (grant number ____) granted to Purchaser under the Plan and pursuant to the Option Agreement dated _______________, ____ by and between the Company and Purchaser with respect
to such grant (the “Option”), which Plan and Option Agreement are hereby incorporated by reference, Purchaser has elected to purchase _________ of those shares of Common Stock which have not become vested under the vesting schedule set
forth in the Option Agreement (“Unvested Shares”). The Unvested Shares and the shares subject to the Option Agreement which have become vested are sometimes collectively referred to herein as the “Shares.” 
 B. As required by the Option Agreement, as a condition to Purchaser’s election to exercise the option, Purchaser must execute this Agreement, which
sets forth the rights and obligations of the parties with respect to Shares acquired upon exercise of the Option. 
 1. Repurchase
Option. 
 (a) If Purchaser’s status as a Service Provider is terminated for any reason, including for cause, death,
and Disability, the Company shall have the right and option to purchase from Purchaser, or Purchaser’s personal representative, as the case may be, all of the Purchaser’s Unvested Shares as of the date of such termination at the price paid
by the Purchaser for such Shares (the “Repurchase Option”). 
 (b) Upon the occurrence of such termination, the
Company may exercise its Repurchase Option by delivering personally or by registered mail, to Purchaser (or his transferee or legal representative, as the case may be), within ninety (90) days of the termination, a notice in writing indicating the
Company’s intention to exercise the Repurchase Option and setting forth a date for closing not later than thirty (30) days from the mailing of such notice. The closing shall take place at the Company’s office. At the closing, the holder of
the certificates for the Unvested Shares being transferred shall deliver the stock certificate or certificates evidencing the Unvested Shares, and the Company shall deliver the purchase price therefor. 

 (c) At its option, the Company may elect to make payment for the Unvested Shares to a
bank selected by the Company. The Company shall avail itself of this option by a notice in writing to Purchaser stating the name and address of the bank, date of closing, and waiving the closing at the Company’s office. 
 (d) If the Company does not elect to exercise the Repurchase Option conferred above by giving the requisite notice within ninety
(90) days following the termination, the Repurchase Option shall terminate. 
 (e) The Repurchase Option shall terminate
in accordance with the vesting schedule contained in Optionee’s Option Agreement. 
 2. Transferability of the Shares; Escrow.

 (a) Purchaser hereby authorizes and directs the Secretary of the Company, or such other person designated by the Company,
to transfer the Unvested Shares as to which the Repurchase Option has been exercised from Purchaser to the Company. 
 (b) To
insure the availability for delivery of Purchaser’s Unvested Shares upon repurchase by the Company pursuant to the Repurchase Option under Section 1, Purchaser hereby appoints the Secretary, or any other person designated by the Company as
escrow agent, as its attorney-in-fact to sell, assign and transfer unto the Company, such Unvested Shares, if any, repurchased by the Company pursuant to the Repurchase Option and shall, upon execution of this Agreement, deliver and deposit with the
Secretary of the Company, or such other person designated by the Company, the share certificates representing the Unvested Shares, together with the stock assignment duly endorsed in blank, attached hereto as Exhibit C-2. The Unvested Shares
and stock assignment shall be held by the secretary in escrow, pursuant to the Joint Escrow Instructions of the Company and Purchaser attached as Exhibit C-3 hereto, until the Company exercises its Repurchase Option, until such Unvested
Shares are vested, or until such time as this Agreement no longer is in effect. As a further condition to the Company’s obligations under this Agreement, the spouse of the Purchaser, if any, shall execute and deliver to the Company the Consent
of Spouse attached hereto as Exhibit C-4. Upon vesting of the Unvested Shares, the escrow agent shall promptly deliver to the Purchaser the certificate or certificates representing such Shares in the escrow agent’s possession belonging
to the Purchaser, and the escrow agent shall be discharged of all further obligations hereunder; provided, however, that the escrow agent shall nevertheless retain such certificate or certificates as escrow agent if so required pursuant to other
restrictions imposed pursuant to this Agreement. 
 (c) The Company, or its designee, shall not be liable for any act it may
do or omit to do with respect to holding the Shares in escrow and while acting in good faith and in the exercise of its judgment. 
 (d) Transfer or sale of the Shares is subject to restrictions on transfer imposed by any applicable state and federal securities laws. Any transferee shall hold such Shares subject to all the provisions hereof and the Exercise Notice
executed by the Purchaser with respect to any 

  

 -2- 

 
Unvested Shares purchased by Purchaser and shall acknowledge the same by signing a copy of this Agreement. 
 3. Ownership, Voting Rights, Duties. This Agreement shall not affect in any way the ownership, voting rights or other rights or duties of
Purchaser, except as specifically provided herein. 
 4. Legends. The share certificate evidencing the Shares issued hereunder shall
be endorsed with the following legend (in addition to any legend required under applicable federal and state securities laws): 
 THE SHARES
REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN RESTRICTIONS UPON TRANSFER AND RIGHTS OF REPURCHASE AS SET FORTH IN AN AGREEMENT BETWEEN THE COMPANY AND THE STOCKHOLDER, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY.

 5. Adjustment for Stock Split. All references to the number of Shares and the purchase price of the Shares in this Agreement shall
be appropriately adjusted to reflect any stock split, stock dividend or other change in the Shares which may be made by the Company pursuant to Section 12 of the Plan after the date of this Agreement. 
 6. Notices. Notices required hereunder shall be given in person or by registered mail to the address of Purchaser shown on the records of the
Company, and to the Company at their respective principal executive offices. 
 7. Survival of Terms. This Agreement shall apply to
and bind Purchaser and the Company and their respective permitted assignees and transferees, heirs, legatees, executors, administrators and legal successors. 
 8. Section 83(b) Election. Purchaser hereby acknowledges that he or she has been informed that, with respect to the exercise of an Option for Unvested Shares, an election (the “Election”) may be
filed by the Purchaser with the Internal Revenue Service, within 30 days of the purchase of the exercised Shares, electing pursuant to Section 83(b) of the Code to be taxed currently on any difference between the purchase price of the exercised
Shares and their Fair Market Value on the date of purchase. In the case of a Nonstatutory Stock Option, this will result in a recognition of taxable income to the Purchaser on the date of exercise, measured by the excess, if any, of the Fair Market
Value of the exercised Shares, at the time the Option is exercised over the purchase price for the exercised Shares. Absent such an Election, taxable income will be measured and recognized by Purchaser at the time or times on which the
Company’s Repurchase Option lapses. In the case of an Incentive Stock Option, such an Election will result in a recognition of income to the Purchaser for alternative minimum tax purposes on the date of exercise, measured by the excess, if any,
of the Fair Market Value of the exercised Shares, at the time the option is exercised, over the purchase price for the exercised Shares. Absent such an Election, alternative minimum taxable income will be measured and recognized by Purchaser at the
time or times on which the Company’s Repurchase Option lapses. Purchaser is strongly encouraged to seek the advice 

  

 -3- 

 
of his or her own tax consultants in connection with the purchase of the Shares and the advisability of filing of the Election under Section 83(b) of
the Code. A form of Election under Section 83(b) is attached hereto as Exhibit C-5 for reference. 
 PURCHASER
ACKNOWLEDGES THAT IT IS PURCHASER’S SOLE RESPONSIBILITY AND NOT THE COMPANY’S TO FILE TIMELY THE ELECTION UNDER SECTION 83(b) OF THE CODE, EVEN IF PURCHASER REQUESTS THE COMPANY OR ITS REPRESENTATIVE TO MAKE THIS FILING ON
PURCHASER’S BEHALF. 
 9. Representations. Purchaser has reviewed with his own tax advisors the federal, state, local and foreign
tax consequences of this investment and the transactions contemplated by this Agreement. Purchaser is relying solely on such advisors and not on any statements or representations of the Company or any of its agents. Purchaser understands that he
(and not the Company) shall be responsible for his own tax liability that may arise as a result of this investment or the transactions contemplated by this Agreement. 
 10. Governing Law. This Agreement shall be governed by the internal substantive laws, but not the choice of law rules, of California. 
 Purchaser represents that he has read this Agreement and is familiar with its terms and provisions. Purchaser hereby agrees to accept as binding,
conclusive and final all decisions or interpretations of the Board upon any questions arising under this Agreement. 
  

 -4- 

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

									
	OPTIONEE	 		 	ACOLOGIX, INC.
			
	  	 		 	  
	Signature	 		 	By
			
	  	 		 	 President & CEO

	Print Name	 		 	Title
			
	  	 		 	
			
	  	 		 	
	 Residence Address
	 		 	
			
	Dated: _________________________, ____	 		 	

  

 -5- 

 EXHIBIT C-2 
 ASSIGNMENT SEPARATE FROM CERTIFICATE 
 FOR VALUE RECEIVED I, __________________________, hereby sell,
assign and transfer unto Acologix, Inc. ______________________ (                    ) shares of the Common Stock of Acologix, Inc. standing in
my name of the books of said corporation represented by Certificate No. _____ herewith and do hereby irrevocably constitute and appoint _______________ to transfer the said stock on the books of the within named corporation with full power
of substitution in the premises. 
 This Stock Assignment may be used only in accordance with the Restricted Stock Purchase Agreement between
Acologix, Inc. and the undersigned dated ______________, _____. 
  

					
			
	Dated: _______________,____	 	Signature:	 	   

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

 EXHIBIT C-3 
 JOINT ESCROW INSTRUCTIONS 
 _________________, ____ 
 Corporate Secretary Acologix, Inc. 
 6121 Hollis Street 
 Emeryville, CA 94608 
 Dear _________________: 
 As Escrow Agent for both Acologix, Inc. (the “Company”), and the undersigned purchaser of stock of the Company (the “Purchaser”), you are hereby authorized and directed to hold the documents delivered to you pursuant to
the terms of that certain Restricted Stock Purchase Agreement (the “Agreement”) between the Company and the undersigned, in accordance with the following instructions: 
 1. In the event the Company and/or any assignee of the Company (referred to collectively for convenience herein as the “Company”) exercises the
Company’s repurchase option set forth in the Agreement, the Company shall give to Purchaser and you a written notice specifying the number of shares of stock to be purchased, the purchase price, and the time for a closing hereunder at the
principal office of the Company. Purchaser and the Company hereby irrevocably authorize and direct you to close the transaction contemplated by such notice in accordance with the terms of said notice. 
 2. At the closing, you are directed (a) to date the stock assignments necessary for the transfer in question, (b) to fill in the number of
shares being transferred, and (c) to deliver the stock assignments, together with the certificate evidencing the shares of stock to be transferred, to the Company or its assignee, against the simultaneous delivery to you of the purchase price
(by cash, a check, or some combination thereof) for the number of shares of stock being purchased pursuant to the exercise of the Company’s repurchase option. 
 3. Purchaser irrevocably authorizes the Company to deposit with you any certificates evidencing shares of stock to be held by you hereunder and any additions and substitutions to said shares as defined in the
Agreement. Purchaser does hereby irrevocably constitute and appoint you as Purchaser’s attorney-in-fact and agent for the term of this escrow to execute with respect to such securities all documents necessary or appropriate to make such
securities negotiable and to complete any transaction herein contemplated, including but not limited to the filing with any applicable state blue sky authority of any required applications for consent to, or notice of transfer of, the securities.
Subject to the provisions of this paragraph 3, Purchaser shall exercise all rights and privileges of a stockholder of the Company while the stock is held by you. 
 4. Upon written request of the Purchaser, but no more than once per calendar year, unless the Company’s repurchase option has been exercised, you will deliver to Purchaser a certificate or certificates
representing so many shares of stock as are not then subject to the 

 
Company’s repurchase option. Within 120 days after cessation of Purchaser’s continuous employment by or services to the Company, or any parent or
subsidiary of the Company, you will deliver to Purchaser a certificate or certificates representing the aggregate number of shares held or issued pursuant to the Agreement and not purchased by the Company or its assignees pursuant to exercise of the
Company’s repurchase option. 
 5. If at the time of termination of this escrow you should have in your possession any documents,
securities, or other property belonging to Purchaser, you shall deliver all of the same to Purchaser and shall be discharged of all further obligations hereunder. 
 6. Your duties hereunder may be altered, amended, modified or revoked only by a writing signed by all of the parties hereto. 
 7. You shall be obligated only for the performance of such duties as are specifically set forth herein and may rely and shall be protected in relying or refraining from acting on any instrument reasonably believed by
you to be genuine and to have been signed or presented by the proper party or parties. You shall not be personally liable for any act you may do or omit to do hereunder as Escrow Agent or as attorney-in-fact for Purchaser while acting in good faith,
and any act done or omitted by you pursuant to the advice of your own attorneys shall be conclusive evidence of such good faith. 
 8. You
are hereby expressly authorized to disregard any and all warnings given by any of the parties hereto or by any other person or corporation, excepting only orders or process of courts of law and are hereby expressly authorized to comply with and obey
orders, judgments or decrees of any court. In case you obey or comply with any such order, judgment or decree, you shall not be liable to any of the parties hereto or to any other person, firm or corporation by reason of such compliance,
notwithstanding any such order, judgment or decree being subsequently reversed, modified, annulled, set aside, vacated or found to have been entered without jurisdiction. 
 9. You shall not be liable in any respect on account of the identity, authorities or rights of the parties executing or delivering or purporting to execute or deliver the Agreement or any documents or papers deposited
or called for hereunder. 
 10. You shall not be liable for the outlawing of any rights under the Statute of Limitations with respect to
these Joint Escrow Instructions or any documents deposited with you. 
 11. You shall be entitled to employ such legal counsel and other
experts as you may deem necessary properly to advise you in connection with your obligations hereunder, may rely upon the advice of such counsel, and may pay such counsel reasonable compensation therefor. 
 12. Your responsibilities as Escrow Agent hereunder shall terminate if you shall cease to be an officer or agent of the Company or if you shall resign by
written notice to each party. In the event of any such termination, the Company shall appoint a successor Escrow Agent. 
 13. If you
reasonably require other or further instruments in connection with these Joint Escrow Instructions or obligations in respect hereto, the necessary parties hereto shall join in furnishing such instruments. 

 14. It is understood and agreed that should any dispute arise with respect to the delivery and/or
ownership or right of possession of the securities held by you hereunder, you are authorized and directed to retain in your possession without liability to anyone all or any part of said securities until such disputes shall have been settled either
by mutual written agreement of the parties concerned or by a final order, decree or judgment of a court of competent jurisdiction after the time for appeal has expired and no appeal has been perfected, but you shall be under no duty whatsoever to
institute or defend any such proceedings. 
 15. Any notice required or permitted hereunder shall be given in writing and shall be deemed
effectively given upon personal delivery or upon deposit in the United States Post Office, by registered or certified mail with postage and fees prepaid, addressed to each of the other parties thereunto entitled at the following addresses or at such
other addresses as a party may designate by ten days’ advance written notice to each of the other parties hereto. 
 16. By signing
these Joint Escrow Instructions, you become a party hereto only for the purpose of said Joint Escrow Instructions; you do not become a party to the Agreement. 
 17. This instrument shall be binding upon and inure to the benefit of the parties hereto, and their respective successors and permitted assigns. 
 18. These Joint Escrow Instructions shall be governed by the internal substantive laws, but not the choice of law rules, of California. 
  

									
	PURCHASER	 		 	ACOLOGIX, INC.
			
	  	 		 	  
	Signature	 		 	By
			
	  	 		 	 President & CEO

	Print Name	 		 	Title
			
	  	 		 	
			
	  	 		 	
	 Residence Address
	 		 	
			
	 ESCROW AGENT
	 		 	
			
	  	 		 	
	 Corporate Secretary
	 		 	
			
	 Dated: ________________________,_____
	 		 	

 EXHIBIT C-4 
 CONSENT OF SPOUSE 
 I, ____________________, spouse of ___________________, have read and approve the
foregoing Restricted Stock Purchase Agreement (the “Agreement”). In consideration of granting of the right to my spouse to purchase shares of Acologix, Inc., as set forth in the Agreement, I hereby appoint my spouse as my attorney-in-fact
in respect to the exercise of any rights under the Agreement and agree to be bound by the provisions of the Agreement insofar as I may have any rights in said Agreement or any shares issued pursuant thereto under the community property laws or
similar laws relating to marital property in effect in the state of our residence as of the date of the signing of the foregoing Agreement. 
  

					
			
	Dated: _______________,____	 	Signature:	 	   

 EXHIBIT C-5 
 ELECTION UNDER SECTION 83(b) 
 OF THE INTERNAL REVENUE CODE OF 1986 
 The undersigned taxpayer hereby elects, pursuant to Sections 55 and 83(b) of the Internal Revenue Code of 1986, as amended, to include in taxpayer’s gross income or
alternative minimum taxable income, as the case may be, for the current taxable year the amount of any compensation taxable to taxpayer in connection with taxpayer’s receipt of the property described below: 
  

	1.	The name, address, taxpayer identification number and taxable year of the undersigned are as follows: 

  

							
	NAME:	  	TAXPAYER:	  		  	SPOUSE:
				
	ADDRESS:	  		  		  	
				
	IDENTIFICATION NO.:	  	TAXPAYER:	  		  	SPOUSE:
				
	TAXABLE YEAR:	  		  		  	

  

	2.	The property with respect to which the election is made is described as follows: __________ shares (the “Shares”) of the Common Stock of Acologix, Inc. (the
“Company”). 

  

	3.	The date on which the property was transferred is:___________________ ,______. 

  

	4.	The property is subject to the following restrictions: 

 The Shares may not be transferred and are subject to forfeiture under the terms of an agreement between the taxpayer and the Company. These restrictions lapse upon the satisfaction of certain conditions contained in such agreement.

  

	5.	The fair market value at the time of transfer, determined without regard to any restriction other than a restriction which by its terms will never lapse, of such property is: $
                    . 

  

	6.	The amount (if any) paid for such property is: $                     .

 The undersigned has submitted a copy of this statement to the person for whom the services were performed in connection with the
undersigned’s receipt of the above-described property. The transferee of such property is the person performing the services in connection with the transfer of said property. 
 The undersigned understands that the foregoing election may not be revoked except with the consent of the Commissioner. 
  

					
			
	Dated: _______________,____	 		 	   
	 	 		 	Taxpayer

 The undersigned spouse of taxpayer joins in this election. 
  

					
			
	Dated: _______________,____	 		 	   
	 	 		 	Spouse of Taxpayer2006 Equity Incentive Plan

 EXHIBIT 10.2 
  
  
 ACOLOGIX, INC. 
 2006 EQUITY INCENTIVE PLAN 
   1.    Purposes
of the Plan. The purposes of this Plan are: 
  

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

  

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

  

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

 The Plan permits the grant of Incentive Stock Options, Nonstatutory Stock Options, Restricted Stock, Restricted Stock Units, Stock Appreciation Rights, Performance Units and Performance Shares. 
   2.    Definitions. As used herein, the following definitions will apply: 
 (a)    “Administrator” means the Board or any of its Committees as will be administering the Plan, in accordance
with Section 4 of the Plan. 
 (b)    “Applicable Laws” means the requirements relating to the
administration of equity-based awards under U.S. state corporate laws, U.S. federal and state securities laws, the Code, any stock exchange or quotation system on which the Common Stock is listed or quoted and the applicable laws of any foreign
country or jurisdiction where Awards are, or will be, granted under the Plan. 
 (c)    “Award” means,
individually or collectively, a grant under the Plan of Options, Stock Appreciation Rights, Restricted Stock, Restricted Stock Units, Performance Units or Performance Shares. 
 (d)    “Award Agreement” means the written or electronic agreement setting forth the terms and provisions applicable
to each Award granted under the Plan. The Award Agreement is subject to the terms and conditions of the Plan. 
 (e)    “Board” means the Board of Directors of the Company. 
 (f)    “Change in Control” means the occurrence of any of the following events: 
 (i)    Any “person” (as such term is used in Sections 13(d) and 14(d) of the Exchange Act) becomes the “beneficial owner” (as defined in Rule 13d-3 of the Exchange Act), directly or indirectly, of
securities of the Company representing fifty percent (50%) or more of the total voting power represented by the Company’s then outstanding voting securities; or 

 (ii)    The consummation of the sale or disposition by the Company of all or
substantially all of the Company’s assets; 
 (iii)    A change in the composition of the Board occurring within a
two-year period, as a result of which fewer than a majority of the directors are Incumbent Directors. “Incumbent Directors” means directors who either (A) are Directors as of the effective date of the Plan, or (B) are elected, or
nominated for election, to the Board with the affirmative votes of at least a majority of the Incumbent Directors at the time of such election or nomination (but will not include an individual whose election or nomination is in connection with an
actual or threatened proxy contest relating to the election of directors to the Company); or 
 (iv)    The consummation
of a merger or consolidation of the Company with any other corporation, other than a merger or consolidation which would result in the voting securities of the Company outstanding immediately prior thereto continuing to represent (either by
remaining outstanding or by being converted into voting securities of the surviving entity or its parent) at least fifty percent (50%) of the total voting power represented by the voting securities of the Company or such surviving entity or its
parent outstanding immediately after such merger or consolidation. 
 (g)    “Code” means the Internal
Revenue Code of 1986, as amended. Any reference to a section of the Code herein will be a reference to any successor or amended section of the Code. 
 (h)    “Committee” means a committee of Directors or of other individuals satisfying Applicable Laws appointed by the Board in accordance with Section 4 hereof. 
 (i)    “Common Stock” means the common stock of the Company. 
 (j)    “Company” means Acologix, Inc., a Delaware corporation, or any successor thereto. 
 (k)    “Consultant” means any person, including an advisor, engaged by the Company or a Parent or Subsidiary to
render services to such entity. 
 (l)    “Director” means a member of the Board. 
 (m)    “Disability” means total and permanent disability as defined in Section 22(e)(3) of the Code, provided
that in the case of Awards other than Incentive Stock Options, the Administrator in its discretion may determine whether a permanent and total disability exists in accordance with uniform and non-discriminatory standards adopted by the Administrator
from time to time. 
 (n)    “Employee” means any person, including Officers and Directors, employed by
the Company or any Parent or Subsidiary of the Company. Neither service as a Director nor payment of a director’s fee by the Company will be sufficient to constitute “employment” by the Company. 
 (o)    “Exchange Act” means the Securities Exchange Act of 1934, as amended. 
  

 2 

 (p)    “Fair Market Value” means, as of any date, the value of
Common Stock determined as follows: 
 (i)    If the Common Stock is listed on any established stock exchange or a
national market system, including without limitation the Nasdaq National Market or The Nasdaq SmallCap Market of The Nasdaq Stock Market, its Fair Market Value will be the closing sales price for such stock (or the closing bid, if no sales were
reported) as quoted on such exchange or system on the day of determination, as reported in The Wall Street Journal or such other source as the Administrator deems reliable; 
 (ii)    If the Common Stock is regularly quoted by a recognized securities dealer but selling prices are not reported, the Fair
Market Value of a Share will be the mean between the high bid and low asked prices for the Common Stock on the day of determination, as reported in The Wall Street Journal or such other source as the Administrator deems reliable; 

(iii)    For purposes of any Awards granted on the Registration Date, the Fair Market Value will be the initial price to the
public as set forth in the final prospectus included within the registration statement in Form S-1 filed with the Securities and Exchange Commission for the initial public offering of the Company’s Common Stock; or 
 (iv)    In the absence of an established market for the Common Stock, the Fair Market Value will be determined in good faith by the
Administrator. 
 (q)    “Fiscal Year” means the fiscal year of the Company. 
 (r)    “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. 
 (s)    “Inside Director”
means a Director who is an Employee. 
 (t)    “Nonstatutory Stock Option” means an Option that by its
terms does not qualify or is not intended to qualify as an Incentive Stock Option. 
 (u)    “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. 
 (v)    “Option” means a stock option granted pursuant to the Plan. 
 (w)    “Optioned Stock” means the Common Stock subject to an Award. 
 (x)    “Outside Director” means a Director who is not an Employee. 
 (y)    “Parent” means a “parent corporation,” whether now or hereafter existing, as defined in Section 424(e) of the Code. 
  

 3 

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

 (aa)    “Performance Share” means an Award denominated in Shares which may be earned in whole or in
part upon attainment of performance goals or other vesting criteria as the Administrator may determine pursuant to Section 10. 
 (bb)    “Performance Unit” means an Award which may be earned in whole or in part upon attainment of performance goals or other vesting criteria as the Administrator may determine and which may be
settled for cash, Shares or other securities or a combination of the foregoing pursuant to Section 10. 
 (cc)    “Period of Restriction” means the period during which the transfer of Shares of Restricted Stock are subject to restrictions and therefore, the Shares are subject to a substantial risk of
forfeiture. Such restrictions may be based on the passage of time, the achievement of target levels of performance, or the occurrence of other events as determined by the Administrator. 
 (dd)    “Plan” means this 2006 Equity Incentive Plan. 
 (ee)    “Registration Date” means the effective date of the first registration statement that is filed by the
Company and declared effective pursuant to Section 12(g) of the Exchange Act, with respect to any class of the Company’s securities. 
 (ff)    “Restricted Stock” means Shares issued pursuant to a Restricted Stock award under Section 7 of the Plan, or issued pursuant to the early exercise of an Option. 
 (gg)    “Restricted Stock Unit” means a bookkeeping entry representing an amount equal to the Fair Market Value of
one Share, granted pursuant to Section 8. Each Restricted Stock Unit represents an unfunded and unsecured obligation of the Company. 
 (hh)    “Rule 16b-3” means Rule 16b-3 of the Exchange Act or any successor to Rule 16b-3, as in effect when discretion is being exercised with respect to the Plan. 
 (ii)    “Section 16(b)” means Section 16(b) of the Exchange Act. 
 (jj)    “Service Provider” means an Employee, Director or Consultant. 
 (kk)    “Share” means a share of the Common Stock, as adjusted in accordance with Section 14 of the Plan.

 (ll)    “Stock Appreciation Right” means an Award, granted alone or in connection with an Option,
that pursuant to Section 9 is designated as a Stock Appreciation Right. 
 (mm)    “Subsidiary”
means a “subsidiary corporation”, whether now or hereafter existing, as defined in Section 424(f) of the Code. 
  

 4 

   3.    Stock Subject to the Plan. 

(a)    Stock Subject to the Plan. Subject to the provisions of Section 14 of the Plan, the maximum aggregate number of
Shares that may be optioned and sold under the Plan is 10,000,000 Shares plus the number of Shares which have been reserved but not issued under the Company’s Amended and Restated 2000 Incentive Stock Plan (the “2000 Plan”) as
of the Registration Date, (ii) any Shares subject to stock options or similar awards granted under the 2000 Plan that expire or otherwise terminate without having been exercised in full and Shares issued pursuant to awards granted under the
2000 Plan that are forfeited to or repurchased by the Company, and (iii) an annual increase to be added on the first day of the Company’s fiscal year beginning with the Company’s 2008 fiscal year, equal to the least of
(A) 3,500,000 Shares, (B) three percent (3%) of the outstanding Shares on such date or (C) an amount determined by the Board. The Shares may be authorized, but unissued, or reacquired Common Stock. 
 (b)    Lapsed Awards. If an Award expires or becomes unexercisable without having been exercised in full, or, with respect to
Restricted Stock, Restricted Stock Units, Performance Shares or Performance Units, is forfeited to or repurchased by the Company, the unpurchased Shares (or for Awards other than Options and Stock Appreciation Rights, the forfeited, repurchased or
unissued Shares) which were subject thereto will become available for future grant or sale under the Plan (unless the Plan has terminated). With respect to Stock Appreciation Rights, only Shares actually issued pursuant to a Stock Appreciation Right
will cease to be available under the Plan; all remaining Shares subject to the Stock Appreciation Rights will remain available for future grant or sale under the Plan (unless the Plan has terminated). Shares that have actually been issued under the
Plan under any Award will not be returned to the Plan and will not become available for future distribution under the Plan; provided, however, that if Shares issued pursuant to Awards of Restricted Stock, Restricted Stock Units, Performance Shares
or Performance Units are repurchased by the Company or are forfeited to the Company, such Shares will become available for future grant under the Plan. Shares used to pay the exercise price of an Award and/or used to satisfy tax withholding
obligations with respect to an Award will become available for future grant or sale under the Plan. To the extent an Award under the Plan is paid out in cash rather than Shares, such cash payment will not result in reducing the number of Shares
available for issuance under the Plan. Notwithstanding the foregoing and, subject to adjustment provided in Section 14, the maximum number of Shares that may be issued upon the exercise of Incentive Stock Options shall equal the aggregate Share
number stated in Section 3(a), plus, to the extent allowable under Section 422 of the Code, any Shares that become available for issuance under the Plan under this Section 3(b). 
 (c)    Share Reserve. The Company, during the term of this Plan, will at all times reserve and keep available such number of
Shares as will be sufficient to satisfy the requirements of the Plan. 
   4.    Administration of the
Plan. 
 (a)    Procedure. 
 (i)    Multiple Administrative Bodies. Different Committees with respect to different groups of Service Providers may administer the Plan. 
  

 5 

 (ii)    Section 162(m). To the extent that the Administrator determines
it to be desirable to qualify Options granted hereunder as “performance-based compensation” within the meaning of Section 162(m) of the Code, the Plan will be administered by a Committee of two or more “outside directors”
within the meaning of Section 162(m) of the Code. 
 (iii)    Rule 16b-3. To the extent desirable to qualify
transactions hereunder as exempt under Rule 16b-3, the transactions contemplated hereunder will be structured to satisfy the requirements for exemption under Rule 16b-3. 
 (iv)    Other Administration. Other than as provided above, the Plan will be administered by (A) the Board or (B) a Committee, which committee will be constituted to satisfy
Applicable Laws. 
 (b)    Powers of the Administrator. Subject to the provisions of the Plan, and in the case of
a Committee, subject to the specific duties delegated by the Board to such Committee, the Administrator will have the authority, in its discretion: 
 (i)    to determine the Fair Market Value; 
 (ii)    to select the
Service Providers to whom Awards may be granted hereunder; 
 (iii)    to determine the number of Shares to be covered
by each Award granted hereunder; 
 (iv)    to approve forms of agreement for use under the Plan; 
 (v)    to determine the terms and conditions, not inconsistent with the terms of the Plan, of any Award granted hereunder. Such
terms and conditions include, but are not limited to, the exercise price, the time or times when Awards may be exercised (which may be based on performance criteria), any vesting acceleration or waiver of forfeiture restrictions, and any restriction
or limitation regarding any Award or the Shares relating thereto, based in each case on such factors as the Administrator will determine; 
 (vi)    to construe and interpret the terms of the Plan and Awards granted pursuant to the Plan; 
 (vii)    to prescribe, amend and rescind rules and regulations relating to the Plan, including rules and regulations relating to sub-plans established for the purpose of satisfying applicable foreign laws; 
 (viii)    to modify or amend each Award (subject to Section 19(c) of the Plan), including the discretionary authority to extend
the post-termination exercisability period of Awards. Notwithstanding the previous sentence, the Administrator may not modify or amend an Option or Stock Appreciation Right to reduce the exercise price of such Option or Stock Appreciation Right
after it has been granted (except for adjustments made pursuant to Section 14) nor may the Administrator cancel any outstanding Option or Stock Appreciation Right and replace it with a new Option or Stock Appreciation Right with a lower
exercise price, unless, in either case, such action is approved by the Company’s stockholders; 
  

 6 

 (ix)    to allow Participants to satisfy withholding tax obligations in such manner
as prescribed in Section 15; 
 (x)    to authorize any person to execute on behalf of the Company any instrument
required to effect the grant of an Award previously granted by the Administrator; 
 (xi)    to allow a Participant to
defer the receipt of the payment of cash or the delivery of Shares that would otherwise be due to such Participant under an Award 
 (xii)    to make all other determinations deemed necessary or advisable for administering the Plan. 
 (c)    Effect of Administrator’s Decision. The Administrator’s decisions, determinations and interpretations will be final and binding on all Participants and any other holders of Awards.

   5.    Eligibility. Nonstatutory Stock Options, Restricted Stock, Restricted Stock Units, Stock
Appreciation Rights, Performance Units and Performance Shares may be granted to Service Providers. Incentive Stock Options may be granted only to Employees. 
   6.    Stock Options. 
 (a)    Limitations.

 (i)    Each Option will be designated in the Award Agreement as either an Incentive Stock Option or a Nonstatutory
Stock Option. However, notwithstanding such designation, to the extent that the aggregate Fair Market Value of the Shares with respect to which Incentive Stock Options are exercisable for the first time by the Participant during any calendar year
(under all plans of the Company and any Parent or Subsidiary) exceeds $100,000, such Options will be treated as Nonstatutory Stock Options. For purposes of this Section 6(a), Incentive Stock Options will be taken into account in the order in
which they were granted. The Fair Market Value of the Shares will be determined as of the time the Option with respect to such Shares is granted. 
 (ii)    The following limitations will apply to grants of Options: 
 (1)    No Service
Provider will be granted, in any Fiscal Year, Options to purchase more than 500,000 Shares. 
 (2)    In connection with
his or her initial service, a Service Provider may be granted Options to purchase up to an additional 500,000 Shares, which will not count against the limit set forth in Section 6(a)(2)(ii)(1) above. 
 (3)    The foregoing limitations will be adjusted proportionately in connection with any change in the Company’s capitalization
as described in Section 14. 
  

 7 

 (4)    If an Option is cancelled in the same Fiscal Year in which it was granted
(other than in connection with a transaction described in Section 14), the cancelled Option will be counted against the limits set forth in subsections (1) and (2) above. For this purpose, if the exercise price of an Option is
reduced, the transaction will be treated as a cancellation of the Option and the grant of a new Option. 
 (b)    Term
of Option. The term of each Option will be stated in the Award Agreement. In the case of an Incentive Stock Option, the term will be ten (10) years from the date of grant or such shorter term as may be provided in the Award Agreement.
Moreover, in the case of an Incentive Stock Option granted to a Participant who, at the time the Incentive Stock Option is granted, owns stock representing more than ten percent (10%) of the total combined voting power of all classes of stock
of the Company or any Parent or Subsidiary, the term of the Incentive Stock Option will be five (5) years from the date of grant or such shorter term as may be provided in the Award Agreement. 
 (c)    Option Exercise Price and Consideration. 
 (i)    Exercise Price. The per share exercise price for the Shares to be issued pursuant to exercise of an Option will be
determined by the Administrator, subject to the following: 
 (1)    In the case of an Incentive Stock Option

 a)    granted to an Employee who, at the time the Incentive Stock Option is granted, owns stock representing more
than ten percent (10%) of the voting power of all classes of stock of the Company or any Parent or Subsidiary, the per Share exercise price will be no less than 110% of the Fair Market Value per Share on the date of grant. 
 b)    granted to any Employee other than an Employee described in paragraph (A) immediately above, the per Share exercise price
will be no less than 100% of the Fair Market Value per Share on the date of grant. 
 c)    Notwithstanding the
foregoing, Incentive Stock Options may be granted with a per Share exercise price of less than 100% of the Fair Market Value per Share on the date of grant pursuant to a transaction described in, and in a manner consistent with, Section 424(a)
of the Code. 
 (2)    In the case of a Nonstatutory Stock Option, the per Share exercise price will not be less than
100% of the Fair Market Value per Share on the date of grant. In the case of a Nonstatutory Stock Option intended to qualify as “performance-based compensation” within the meaning of Section 162(m) of the Code, the per Share exercise
price will be no less than 100% of the Fair Market Value per Share on the date of grant. 
 (ii)    Waiting Period
and Exercise Dates. At the time an Option is granted, the Administrator will fix the period within which the Option may be exercised and will determine any conditions that must be satisfied before the Option may be exercised. 
 (iii)    Form of Consideration. The Administrator will determine the acceptable form of consideration for exercising an
Option, including the method of payment. In the 

  

 8 

 
case of an Incentive Stock Option, the Administrator will determine the acceptable form of consideration at the time of grant. Such consideration may consist
entirely of: (1) cash; (2) check; (3) promissory note; (4) other Shares, provided Shares acquired directly or indirectly from the Company, (A) have been owned by the Participant and not subject to substantial risk of
forfeiture for more than six months on the date of surrender, and (B) have a Fair Market Value on the date of surrender equal to the aggregate exercise price of the Shares as to which said Option will be exercised; (5) consideration
received by the Company under a cashless exercise program implemented by the Company in connection with the Plan; (6) a reduction in the amount of any Company liability to the Participant, including any liability attributable to the
Participant’s participation in any Company-sponsored deferred compensation program or arrangement; (7) any combination of the foregoing methods of payment; or (8) such other consideration and method of payment for the issuance of
Shares to the extent permitted by Applicable Laws. 
 (d)    Exercise of Option. 
 (i)    Procedure for Exercise; Rights as a Stockholder. Any Option granted hereunder will be exercisable according to the
terms of the Plan and at such times and under such conditions as determined by the Administrator and set forth in the Award Agreement. An Option may not be exercised for a fraction of a Share. 
 An Option will be deemed exercised when the Company receives: (i) notice of exercise (in such form as the Administrator specify from time to time)
from the person entitled to exercise the Option, and (ii) full payment for the Shares with respect to which the Option is exercised (together with an applicable withholding taxes). Full payment may consist of any consideration and method of
payment authorized by the Administrator and permitted by the Award Agreement and the Plan (together with an applicable withholding taxes). Shares issued upon exercise of an Option will be issued in the name of the Participant or, if requested by the
Participant, in the name of the Participant and his or her spouse. Until the Shares are issued (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company), no right to vote or receive
dividends or any other rights as a stockholder will exist with respect to the Optioned Stock, notwithstanding the exercise of the Option. The Company will issue (or cause to be issued) such Shares promptly after the Option is exercised. No
adjustment will be made for a dividend or other right for which the record date is prior to the date the Shares are issued, except as provided in Section 14 of the Plan. 
 Exercising an Option in any manner will decrease the number of Shares thereafter available, both for purposes of the Plan and for sale under the Option,
by the number of Shares as to which the Option is exercised. 
 (ii)    Termination of Relationship as a Service
Provider. If a Participant ceases to be a Service Provider, other than upon the Participant’s death or Disability, the Participant may exercise his or her Option within such period of time as is specified in the Award Agreement to the
extent that the Option is vested on the date of termination (but in no event later than the expiration of the term of such Option as set forth in the Award Agreement). In the absence of a specified time in the Award Agreement, the Option will remain
exercisable for three (3) months following the Participant’s termination. Unless otherwise provided by the Administrator, if on the date of termination the Participant is not vested as to his or her entire Option, the Shares covered by

  

 9 

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

 (b)    Restricted Stock Agreement. Each Award of Restricted Stock will be evidenced by an Award Agreement that
will specify the Period of Restriction, the number of Shares granted, and such other terms and conditions as the Administrator, in its sole discretion, will determine. Unless the Administrator determines otherwise, the Company as escrow agent will
hold Shares of Restricted Stock until the restrictions on such Shares have lapsed. 
 (c)    Transferability.
Except as provided in this Section 7, Shares of Restricted Stock may not be sold, transferred, pledged, assigned, or otherwise alienated or hypothecated until the end of the applicable Period of Restriction. 
  

 10 

 (d)    Other Restrictions. The Administrator, in its sole discretion, may
impose such other restrictions on Shares of Restricted Stock as it may deem advisable or appropriate. 
 (e)    Removal of Restrictions. Except as otherwise provided in this Section 7, Shares of Restricted Stock covered by each Restricted Stock grant made under the Plan will be released from escrow as soon as
practicable after the last day of the Period of Restriction or at such other time as the Administrator may determine. The Administrator, in its discretion, may accelerate the time at which any restrictions will lapse or be removed. 
 (f)    Voting Rights. During the Period of Restriction, Service Providers holding Shares of Restricted Stock granted hereunder
may exercise full voting rights with respect to those Shares, unless the Administrator determines otherwise. 
 (g)    Dividends and Other Distributions. During the Period of Restriction, Service Providers holding Shares of Restricted Stock will be entitled to receive all dividends and other distributions paid with respect
to such Shares, unless the Administrator determines otherwise. If any such dividends or distributions are paid in Shares, the Shares will be subject to the same restrictions on transferability and forfeitability as the Shares of Restricted Stock
with respect to which they were paid. 
 (h)    Return of Restricted Stock to Company. On the date set forth in
the Award Agreement, the Restricted Stock for which restrictions have not lapsed will revert to the Company and again will become available for grant under the Plan. 
   8.    Restricted Stock Units. 
 (a)    Grant. Restricted Stock Units may be granted at any time and from time to time on such terms and conditions as the Administrator determines. 
 (b)    Vesting Criteria and Other Terms. The Administrator shall set vesting criteria in its discretion, which, depending on
the extent to which the criteria are met, will determine the number of Restricted Stock Units that will be paid out to the Participant. The Administrator may set vesting criteria based upon the achievement of Company-wide, business unit, or
individual goals (including, but not limited to, continued employment), or any other basis determined by the Administrator in its discretion. The Administrator will determine the other terms, conditions, and restrictions related to the grant,
including the number of Restricted Stock Units and the form of payout, which, subject to Section 8(d), may be left to the discretion of the Administrator 
 (c)    Earning Restricted Stock Units. Upon meeting the applicable vesting criteria, the Participant shall be entitled to receive a payout at such time as the Administrator determines. At
any time after the grant of Restricted Stock Units, the Administrator, in its sole discretion, may reduce or waive any vesting criteria that must be met to receive a payout. 
 (d)    Form and Timing of Payment. Payment of earned Restricted Stock Units shall be made as soon as practicable after the
date(s) determined by the Administrator and set forth in the Award Agreement. The Administrator, in its sole discretion, may pay earned Restricted Stock Units in cash, Shares, or a combination thereof. Restricted Stock Units that are fully paid in
cash will not reduce the number of Shares available for issuance under the Plan. 
  

 11 

 (e)    Cancellation. On the date set forth in the Award Agreement, all
unearned Restricted Stock Units shall be forfeited to the Company. 
   9.    Stock Appreciation Rights.

 (a)    Grant of Stock Appreciation Rights. Subject to the terms and conditions of the Plan, a Stock
Appreciation Right may be granted to Service Providers at any time and from time to time as will be determined by the Administrator, in its sole discretion. 
 (b)    Number of Shares. The Administrator will have complete discretion to determine the number of Stock Appreciation Rights granted to any Service Provider. 
 (c)    Exercise Price and Other Terms. The Administrator, subject to the provisions of the Plan, will have complete discretion
to determine the terms and conditions of Stock Appreciation Rights granted under the Plan. In the case of a freestanding Stock Appreciation Right, the exercise price will be not less than 100% of the Fair Market Value of a Share on the date of
grant. The exercise price of a tandem or affiliated Stock Appreciation Rights will equal the exercise price of the related Option. 
 (d)    Stock Appreciation Right Agreement. Each Stock Appreciation Right grant will be evidenced by an Award Agreement that will specify the exercise price, the term of the Stock Appreciation Right, the conditions
of exercise, and such other terms and conditions as the Administrator, in its sole discretion, will determine. 
 (e)    Expiration of Stock Appreciation Rights. An Stock Appreciation Right granted under the Plan will expire upon the date determined by the Administrator, in its sole discretion, and set forth in the Award
Agreement. Notwithstanding the foregoing, the rules of Section 6(d) also will apply to Stock Appreciation Rights. 
 (f)    Payment of Stock Appreciation Right Amount. Upon exercise of an Stock Appreciation Right, a Participant will be entitled to receive payment from the Company in an amount determined by multiplying:

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

 (ii)    The number of Shares with respect to which the Stock Appreciation Right is exercised. 
 At the discretion of the Administrator, the payment upon Stock Appreciation Right exercise may be in cash, in Shares of equivalent value, or in some
combination thereof. 
 10.    Performance Units and Performance Shares. 
 (a)    Grant of Performance Units/Shares. Performance Units and Performance Shares may be granted to Service Providers at any
time and from time to time, as will be determined by the Administrator, in its sole discretion. The Administrator will have complete discretion in determining the number of Performance Units and Performance Shares granted to each Participant.

  

 12 

 (b)    Value of Performance Units/Shares. Each Performance Unit will have an
initial value that is established by the Administrator on or before the date of grant. Each Performance Share will have an initial value equal to the Fair Market Value of a Share on the date of grant. 
 (c)    Performance Objectives and Other Terms. The Administrator will set performance objectives or other vesting provisions
(including, without limitation, continued status as a Service Provider) in its discretion which, depending on the extent to which they are met, will determine the number or value of Performance Units/Shares that will be paid out to the Service
Providers. The time period during which the performance objectives or other vesting provisions must be met will be called the “Performance Period.” Each Award of Performance Units/Shares will be evidenced by an Award Agreement that will
specify the Performance Period, and such other terms and conditions as the Administrator, in its sole discretion, will determine. The Administrator may set performance objectives based upon the achievement of Company-wide, divisional, or individual
goals, applicable federal or state securities laws, or any other basis determined by the Administrator in its discretion. 
 (d)    Earning of Performance Units/Shares. After the applicable Performance Period has ended, the holder of Performance Units/Shares will be entitled to receive a payout of the number of Performance Units/Shares
earned by the Participant over the Performance Period, to be determined as a function of the extent to which the corresponding performance objectives or other vesting provisions have been achieved. After the grant of a Performance Unit/Share, the
Administrator, in its sole discretion, may reduce or waive any performance objectives or other vesting provisions for such Performance Unit/Share. 
 (e)    Form and Timing of Payment of Performance Units/Shares. Payment of earned Performance Units/Shares will be made as soon as practicable after the expiration of the applicable Performance Period. The
Administrator, in its sole discretion, may pay earned Performance Units/Shares in the form of cash, in Shares (which have an aggregate Fair Market Value equal to the value of the earned Performance Units/Shares at the close of the applicable
Performance Period) or in a combination thereof. 
 (f)    Cancellation of Performance Units/Shares. On the date
set forth in the Award Agreement, all unearned or unvested Performance Units/Shares will be forfeited to the Company, and again will be available for grant under the Plan. 
 11.    Formula Option Grants to Outside Directors. 
 (a)    General. All grants of Options to Outside Directors pursuant to this Section will be automatic and nondiscretionary,
except as otherwise provided herein, and will be made in accordance with the following provisions: 
 (b)    Type of
Option. All Options granted pursuant to this Section will be Nonstatutory Stock Options and, except as otherwise provided herein, will be subject to the other terms and conditions of the Plan. 
  

 13 

 (c)    No Discretion. No person will have any discretion to select which
Outside Directors will be granted Options under this Section or to determine the number of Shares to be covered by such Options (except as provided in Sections 11(g) and 14). 
 (d)    Initial Option. Each person who first becomes an Outside Director following the Registration Date will be automatically
granted an Option to purchase 50,000 Shares (the “Initial Option”) on or about the date on which such person first becomes an Outside Director, whether through election by the stockholders of the Company or appointment by the Board
to fill a vacancy; provided, however, that an Inside Director who ceases to be an Inside Director, but who remains a Director, will not receive a First Option. 
 (e)    Annual Option. Each Outside Director will be automatically granted an Option to purchase 25,000 Shares (an “Annual Option”) on each date of the annual meeting of the
stockholders of the Company beginning in 2007, if as of such date, he or she will have served on the Board for at least the preceding six (6) months. 
 (f)    Terms. The terms of each Option granted pursuant to this Section will be as follows: 
 (i)    The term of the Option will be ten (10) years. 
 (ii)    The exercise price per Share will be 100% of the Fair Market Value per Share on the date of grant of the Option. 
 (iii)    The Option will remain exercisable for three (3) years following the Participant’s termination. 
 (iv)    Subject to Section 14, the Initial Option will vest and become exercisable as to one-quarter (1/4th) of the Shares subject to such Option on the first anniversary of its date of grant and as to one forty-eighth (1/48th) of the Shares subject to such Option each full month thereafter, provided that the Participant continues to serve as a Director through each such date.

 (v)    Subject to Section 14, the Annual Option will vest and become exercisable as to one twelfth
(1/12th) of the Shares subject to such Option each full month following its date of grant, provided that the
Participant continues to serve as a Director through each such date. 
 (g)    Adjustments. The Administrator in
its discretion may change and otherwise revise the terms of Options granted under this Section 11, including, without limitation, the number of Shares and exercise prices thereof, for Options granted on or after the date the Administrator
determines to make any such change or revision. 
 (h)    Other Awards. Nothing in this Section 11 will limit
the ability of the Administrator to grant all types of Awards under the Plan to Outside Directors in addition to the Options that are granted to them under this Section 11. 
  

 14 

 12.    Leaves of Absence/Transfer Between Locations. Unless the Administrator
provides otherwise or as required by Applicable Law, vesting of Awards granted hereunder will be suspended during any unpaid leave of absence. An Employee will not cease to be an Employee in the case of (i) any leave of absence approved by the
Company or (ii) transfers between locations of the Company or between the Company, its Parent, or any Subsidiary. For purposes of Incentive Stock Options, no such leave may exceed ninety (90) days, unless reemployment upon expiration of
such leave is guaranteed by statute or contract. If reemployment upon expiration of a leave of absence approved by the Company is not so guaranteed, then three (3) months following the ninety-first (91st) day of such leave any Incentive
Stock Option held by the Participant will cease to be treated as an Incentive Stock Option and will be treated for tax purposes as a Nonstatutory Stock Option. 
 13.    Transferability of Awards. Unless determined otherwise by the Administrator, an Award may not be sold, pledged, assigned, hypothecated, transferred, or disposed of in any manner other
than by will or by the laws of descent or distribution and may be exercised, during the lifetime of the Participant, only by the Participant. If the Administrator makes an Award transferable, such Award will contain such additional terms and
conditions as the Administrator deems appropriate. 
 14.    Adjustments; Dissolution or Liquidation; Merger or Change
in Control. 
 (a)    Adjustments. In the event that any dividend or other distribution (whether in the form
of cash, Shares, other securities, or other property), recapitalization, stock split, reverse stock split, reorganization, merger, consolidation, split-up, spin-off, combination, repurchase, or exchange of Shares or other securities of the Company,
or other change in the corporate structure of the Company affecting the Shares occurs, the Administrator, in order to prevent diminution or enlargement of the benefits or potential benefits intended to be made available under the Plan, may (in its
sole discretion) adjust the number and class of Shares that may be delivered under the Plan and/or the number, class, and price of Shares covered by each outstanding Award, the numerical Share limits in Sections 3 and 6 of the Plan and the
number of Shares issuable pursuant to Options to be granted under Section 11. 
 (b)    Dissolution or
Liquidation. In the event of the proposed dissolution or liquidation of the Company, the Administrator will notify each Participant as soon as practicable prior to the effective date of such proposed transaction. To the extent it has not been
previously exercised, an Award will terminate immediately prior to the consummation of such proposed action. 
 (c)    Change in Control. In the event of a merger or Change in Control, each outstanding Award will be treated as the Administrator determines, including, without limitation, that each Award be assumed or an
equivalent option or right substituted by the successor corporation or a Parent or Subsidiary of the successor corporation. The Administrator shall not be required to treat all Awards similarly in the transaction. 
 In the event that the successor corporation does not assume or substitute for the Award, unless the Administrator provides otherwise, the Participant
will fully vest in and have the right to exercise all of his or her outstanding Options and Stock Appreciation Rights, including Shares as to which such Awards would not otherwise be vested or exercisable, all restrictions on Restricted Stock and
Restricted Stock Units will lapse, and, with respect to Performance Shares and Performance Units, all Performance Goals or other vesting criteria will be deemed achieved at target 

  

 15 

 
levels and all other terms and conditions met. In addition, if an Option or Stock Appreciation Right is not assumed or substituted in the event of a Change
in Control, the Administrator will notify the Participant in writing or electronically that the Option or Stock Appreciation Right will be exercisable for a period of time determined by the Administrator in its sole discretion, and the Option or
Stock Appreciation Right will terminate upon the expiration of such period. 
 For the purposes of this subsection (c), an Award will be
considered assumed if, following the Change in Control, the Award confers the right to purchase or receive, for each Share subject to the Award immediately prior to the Change in Control, the consideration (whether stock, cash, or other securities
or property) or, in the case of a Stock Appreciation Right upon the exercise of which the Administrator determines to pay cash or a Performance Share or Performance Unit which the Administrator can determine to pay in cash, the fair market value of
the consideration received in the merger or Change in Control by holders of Common Stock for each Share held on the effective date of the transaction (and if holders were offered a choice of consideration, the type of consideration chosen by the
holders of a majority of the outstanding Shares); provided, however, that if such consideration received in the Change in Control is not solely common stock of the successor corporation or its Parent, the Administrator may, with the consent of the
successor corporation, provide for the consideration to be received upon the exercise of an Option or Stock Appreciation Right or upon the payout of a Restricted Stock Unit, Performance Share or Performance Unit, for each Share subject to such Award
(or in the case of Restricted Stock Units and Performance Units, the number of implied shares determined by dividing the value of the Restricted Stock Units and Performance Units, as applicable, by the per share consideration received by holders of
Common Stock in the Change in Control), to be solely common stock of the successor corporation or its Parent equal in fair market value to the per share consideration received by holders of Common Stock in the Change in Control. 
 Notwithstanding anything in this Section 14(c) to the contrary, an Award that vests, is earned or paid-out upon the satisfaction of one or more
performance goals will not be considered assumed if the Company or its successor modifies any of such performance goals without the Participant’s consent; provided, however, a modification to such performance goals only to reflect the successor
corporation’s post-Change in Control corporate structure will not be deemed to invalidate an otherwise valid Award assumption. 
 (d)    Outside Director Awards and Change of Control. With respect to Awards granted to an Outside Director, in the event of a Change in Control, then such Participant will fully vest in and have the right to
exercise Options and/or Stock Appreciation Rights as to all of the Optioned Stock, including Shares as to which such Awards would not otherwise be vested or exercisable, all restrictions on Restricted Stock and Restricted Stock Units will lapse,
and, with respect to Performance Shares and Performance Units, all performance goals or other vesting criteria will be deemed achieved at target levels and all other terms and conditions met. 
 15.    Tax Withholding. 
 (a)    Withholding Requirements. Prior to the delivery of any Shares or cash pursuant to an Award (or exercise thereof), the Company will have the power and the right to deduct or withhold, or require a
Participant to remit to the Company, an amount sufficient to satisfy federal, state, local, foreign or other taxes (including the Participant’s FICA obligation) required to be withheld with respect to such Award (or exercise thereof).

  

 16 

 (b)    Withholding Arrangements. The Administrator, in its sole discretion and
pursuant to such procedures as it may specify from time to time, may permit a Participant to satisfy such tax withholding obligation, in whole or in part by (without limitation) (a) paying cash, (b) electing to have the Company withhold
otherwise deliverable cash or Shares having a Fair Market Value equal to the amount required to be withheld, or (c) delivering to the Company already-owned Shares having a Fair Market Value equal to the amount required to be withheld. The
amount of the withholding requirement will be deemed to include any amount which the Administrator agrees may be withheld at the time the election is made. The Fair Market Value of the Shares to be withheld or delivered will be determined as of the
date that the taxes are required to be withheld. 
 16.    No Effect on Employment or Service. Neither the Plan
nor any Award will confer upon a Participant any right with respect to continuing the Participant’s relationship as a Service Provider with the Company, nor will they interfere in any way with the Participant’s right or the Company’s
right to terminate such relationship at any time, with or without cause, to the extent permitted by Applicable Laws. 
 17.    Date of Grant. The date of grant of an Award will be, for all purposes, the date on which the Administrator makes the determination granting such Award, or such other later date as is determined by the
Administrator. Notice of the determination will be provided to each Participant within a reasonable time after the date of such grant. 
 18.    Term of Plan. Subject to Section 22 of the Plan, the Plan will become effective upon its adoption by the Board. It will continue in effect for a term of ten (10) years unless terminated earlier
under Section 19 of the Plan. 
 19.    Amendment and Termination of the Plan. 
 (a)    Amendment and Termination. The Board may at any time amend, alter, suspend or terminate the Plan. 
 (b)    Stockholder Approval. The Company will obtain stockholder approval of any Plan amendment to the extent necessary and
desirable to comply with Applicable Laws. 
 (c)    Effect of Amendment or Termination. No amendment, alteration,
suspension or termination of the Plan will impair the rights of any Participant, unless mutually agreed otherwise between the Participant and the Administrator, which agreement must be in writing and signed by the Participant and the Company.
Termination of the Plan will not affect the Administrator’s ability to exercise the powers granted to it hereunder with respect to Awards granted under the Plan prior to the date of such termination. 
 20.    Conditions Upon Issuance of Shares. 
 (a)    Legal Compliance. Shares will not be issued pursuant to the exercise of an Award unless the exercise of such Award and the issuance and delivery of such Shares will comply with
Applicable Laws and will be further subject to the approval of counsel for the Company with respect to such compliance. 
  

 17 

 (b)    Investment Representations. As a condition to the exercise of an Award,
the Company may require the person exercising such Award to represent and warrant at the time of any such exercise that the Shares are being purchased only for investment and without any present intention to sell or distribute such Shares if, in the
opinion of counsel for the Company, such a representation is required. 
 21.    Inability to Obtain Authority.
The inability of the Company to obtain authority from any regulatory body having jurisdiction, which authority is deemed by the Company’s counsel to be necessary to the lawful issuance and sale of any Shares hereunder, will relieve the Company
of any liability in respect of the failure to issue or sell such Shares as to which such requisite authority will not have been obtained. 
 22.    Stockholder Approval. The Plan will be subject to approval by the stockholders of the Company within twelve (12) months after the date the Plan is adopted. Such stockholder approval will be obtained in
the manner and to the degree required under Applicable Laws. 
  

 18 

 ACOLOGIX, INC. 
 2006 EQUITY INCENTIVE PLAN 
 STOCK OPTION AWARD AGREEMENT 
 Unless otherwise defined herein, the terms defined in the 2006 Equity Incentive Plan (the “Plan”) will have the same defined meanings in this
Stock Option Agreement (the “Award Agreement”). 
  

	I.	NOTICE OF STOCK OPTION GRANT 

 Name:

 Address: 
 You have
been granted an option to purchase Common Stock of the Company, subject to the terms and conditions of the Plan and this Award Agreement, as follows: 
  

			
	 Grant Number
	  	_________________________
		
	 Date of Grant
	  	_________________________
		
	 Vesting Commencement Date
	  	_________________________
		
	 Exercise Price per Share
	  	$ _______________________
		
	 Total Number of Shares Granted
	  	_________________________
		
	 Total Exercise Price
	  	$ _______________________
		
	 Type of Option:
	  	 ̈ Incentive Stock Option
		
		  	 ̈ Nonstatutory Stock Option
		
	 Term/Expiration Date:
	  	_________________________

 Vesting Schedule: 
 Subject to accelerated vesting as set forth below or in the Plan, this Option may be exercised, in whole or in part, in accordance with the following
schedule: 
 25% of the Shares subject to the Option will vest twelve months after the Vesting Commencement Date, and 1/48 of the Shares
subject to the Option will vest each month thereafter on the same day of the Vesting Commencement Date (or if there is no corresponding date, the last day of the month), subject to Participant continuing to be a Service Provider through each such
date. 

 Termination Period: 
 This Option shall be exercisable for three (3) months after Participant ceases to be a Service Provider, unless such termination is due to Participant’s death or Disability, in which case this Option shall
be exercisable for one (1) year after Participant ceases to be Service Provider. Notwithstanding the foregoing, in no event may this Option be exercised after the Term/Expiration Date as provided above and may be subject to earlier termination
as provided in Section 14(c) of the Plan. 
  

	II.	AGREEMENT 

  

	 	A.	Grant of Option. 

 The Administrator
hereby grants to individual named in the Notice of Grant attached as Part I of this Agreement (the “Participant”) an option (the “Option”) to purchase the number of Shares, as set forth in the Notice of Grant, at the exercise
price per share set forth in the Notice of Grant (the “Exercise Price”), subject to the terms and conditions of the Plan, which is incorporated herein by reference. Subject to Section 19(c) of the Plan, in the event of a conflict
between the terms and conditions of the Plan and the terms and conditions of this Award Agreement, the terms and conditions of the Plan will prevail. 
 If designated in the Notice of Grant as an Incentive Stock Option (“ISO”), this Option is intended to qualify as an Incentive Stock Option under Section 422 of the Code. However, if this Option is
intended to be an Incentive Stock Option, to the extent that it exceeds the $100,000 rule of Code Section 422(d) it will be treated as a Nonstatutory Stock Option (“NSO”). 
  

	 	B.	Exercise of Option. 

 (a) Right
to Exercise. This Option is exercisable during its term in accordance with the Vesting Schedule set out in the Notice of Grant and the applicable provisions of the Plan and this Award Agreement. 
 (b) Method of Exercise. This Option is exercisable by delivery of an exercise notice, in the form attached as Exhibit A (the
“Exercise Notice”) or in such other form and manner as determined by the Administrator, which will state the election to exercise the Option, the number of Shares in respect of which the Option is being exercised (the “Exercised
Shares”), and such other representations and agreements as may be required by the Company pursuant to the provisions of the Plan. The Exercise Notice will be completed by Participant and delivered to the Company. The Exercise Notice will be
accompanied by, and deemed exercised upon receipt by the Company of, payment of the aggregate Exercise Price as to all Exercised Shares, together with any applicable withholding taxes. 
 No Shares will be issued pursuant to the exercise of this Option unless such issuance and exercise comply with Applicable Laws. Assuming
such compliance, for income tax purposes the Exercised Shares will be considered transferred to Participant on the date the Option is exercised with respect to such Exercised Shares. 
  

 -2- 

	 	C.	Method of Payment. 

 Payment of the
aggregate Exercise Price will be by any of the following, or a combination thereof, at the election of Participant: 
 1.
cash; 
 2. check; 
 3. consideration received by the Company under a formal cashless exercise program adopted by the Company in connection with the Plan; or 
 4. surrender of other Shares which, (i) in the case of Shares acquired from the Company, either directly or indirectly, have been
owned by the Participant and not subject to a substantial risk of forfeiture for more than six (6) months on the date of surrender, and (ii) have a Fair Market Value on the date of surrender equal to the aggregate Exercise Price of the
Exercised Shares. 
  

	 	D.	Non-Transferability of Option. 

 This Option may not be transferred in any manner otherwise than by will or by the laws of descent or distribution and may be exercised during the lifetime of Participant only by Participant. 
  

	 	E.	Term of Option. 

 This Option may be
exercised only within the term set out in the Notice of Grant, and may be exercised during such term only in accordance with the Plan and the terms of this Award Agreement. 
  

	 	F.	Tax Obligations. 

 1. Withholding
Taxes. Participant agrees to make appropriate arrangements with the Company (or the Parent or Subsidiary employing or retaining Participant) for the satisfaction of all Federal, state, and local income and employment tax withholding requirements
applicable to the Option exercise. Participant acknowledges and agrees that the Company may refuse to honor the exercise and refuse to deliver Shares if such withholding amounts are not delivered at the time of exercise. 
 2. Notice of Disqualifying Disposition of ISO Shares. If the Option granted to Participant herein is an ISO, and if Participant
sells or otherwise disposes of any of the Shares acquired pursuant to the ISO on or before the later of (1) the date two years after the Grant Date, or (2) the date one year after the date of exercise, Participant will immediately notify
the Company in writing of such disposition. Participant agrees that Participant may be subject to income tax withholding by the Company on the compensation income recognized by Participant. 
  

 -3- 

	 	G.	Entire Agreement; Governing Law. 

 The Plan is incorporated herein by reference. The Plan and this Award Agreement constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements
of the Company and Participant with respect to the subject matter hereof, and may not be modified adversely to Participant’s interest except by means of a writing signed by the Company and Participant. This Award Agreement is governed by the
internal substantive laws, but not the choice of law rules, of California. 
  

	 	H.	NO GUARANTEE OF CONTINUED SERVICE. 

 PARTICIPANT ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE VESTING SCHEDULE HEREOF IS EARNED ONLY BY CONTINUING AS A SERVICE PROVIDER AT THE WILL OF THE COMPANY (OR THE PARENT OR SUBSIDIARY OF THE COMPANY EMPLOYING OR
RETAINING PARTICIPANT) AND NOT THROUGH THE ACT OF BEING HIRED, BEING GRANTED AN OPTION OR PURCHASING SHARES HEREUNDER. PARTICIPANT FURTHER ACKNOWLEDGES AND AGREES THAT THIS AWARD AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING
SCHEDULE SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED ENGAGEMENT AS A SERVICE PROVIDER FOR THE VESTING PERIOD, FOR ANY PERIOD, OR AT ALL, AND WILL NOT INTERFERE WITH PARTICIPANT’S RIGHT OR THE RIGHT OF THE
COMPANY (OR THE PARENT OR SUBSIDIARY OF THE COMPANY EMPLOYING OR RETAINING PARTICIPANT) TO TERMINATE PARTICIPANT’S RELATIONSHIP AS A SERVICE PROVIDER AT ANY TIME, WITH OR WITHOUT CAUSE. 
 [Remainder of Page Intentionally Left Blank] 
  

 -4- 

 By Participant’s signature and the signature of the Company’s representative below, Participant
and the Company agree that this Option is granted under and governed by the terms and conditions of the Plan and this Award Agreement. Participant has reviewed the Plan and this Award Agreement in their entirety, has had an opportunity to obtain the
advice of counsel prior to executing this Award Agreement and fully understands all provisions of the Plan and Award Agreement. Participant hereby agrees to accept as binding, conclusive and final all decisions or interpretations of the
Administrator upon any questions relating to the Plan and Award Agreement. Participant further agrees to notify the Company upon any change in the residence address indicated below. 
  

									
	PARTICIPANT:	 		 	ACOLOGIX, INC.
			
	  	 		 	  
	Signature	 		 	By
			
	  	 		 	  
	Print Name	 		 	Title
			
	  	 		 	
	 Residence Address
	 		 	
			
	  	 		 	

  

 -5- 

 EXHIBIT A 
 ACOLOGIX, INC. 
 2006 EQUITY INCENTIVE PLAN 
 EXERCISE NOTICE 
 Acologix, Inc. 
 3960 Point Eden Way 
 Hayward, CA 94545 
 Attention: Corporate Secretary 
 1. Exercise of Option. Effective as of today, ________________, _____, the undersigned
(“Purchaser”) hereby elects to purchase ______________ shares (the “Shares”) of the Common Stock of Acologix, Inc. (the “Company”) under and pursuant to the 2006 Equity Incentive Plan (the “Plan”) and the
Stock Option Agreement dated ________ (the “Award Agreement”). The purchase price for the Shares will be $                    , as
required by the Award Agreement. 
 2. Delivery of Payment. Purchaser herewith delivers to the Company the full purchase price for the
Shares and any required withholding taxes to be paid in connection with the exercise of the Option. 
 3. Representations of
Purchaser. Purchaser acknowledges that Purchaser has received, read and understood the Plan and the Award Agreement and agrees to abide by and be bound by their terms and conditions. 
 4. Rights as Stockholder. Until the issuance (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer
agent of the Company) of the Shares, no right to vote or receive dividends or any other rights as a stockholder will exist with respect to the Optioned Stock, notwithstanding the exercise of the Option. The Shares so acquired will be issued to
Participant as soon as practicable after exercise of the Option. No adjustment will be made for a dividend or other right for which the record date is prior to the date of issuance, except as provided in Section 14 of the Plan. 
 5. Tax Consultation. Purchaser understands that Purchaser may suffer adverse tax consequences as a result of Purchaser’s purchase or
disposition of the Shares. Purchaser represents that Purchaser has consulted with any tax consultants Purchaser deems advisable in connection with the purchase or disposition of the Shares and that Purchaser is not relying on the Company for any tax
advice. 
 6. Entire Agreement; Governing Law. The Plan and Award Agreement are incorporated herein by reference. This Agreement, the
Plan and the Award Agreement constitute the entire agreement of the parties with respect to the subject matter hereof and supersede in their entirety all prior undertakings and agreements of the Company and Purchaser with respect to the subject
matter 

 
hereof, and may not be modified adversely to the Purchaser’s interest except by means of a writing signed by the Company and Purchaser. This agreement
is governed by the internal substantive laws, but not the choice of law rules, of California. 
  

									
	Submitted by:	 		 	Accepted by:
			
	PURCHASER:	 		 	ACOLOGIX, INC.
			
	  	 		 	  
	Signature	 		 	By
			
	  	 		 	  
	Print Name	 		 	Its
			
	Address:	 		 	Address:
			
	  	 		 	
			
	  	 		 	
			
		 		 	  
		 		 	Date Received

  

 -2-

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