Document:

EX-10.1

 Exhibit 10.1 

ON24, INC. 
 2000 STOCK
OPTION PLAN 
 1. Purposes of the Plan. The purposes of this 2000 Stock Option Plan are to attract and retain the
best available personnel for positions of substantial responsibility, to provide additional incentive to Employees and Consultants of the Company and its Subsidiaries and to promote the success of the Company’s business. Options granted under
the Plan may be Incentive Stock Options (as defined under Section 422 of the Code) or Nonstatutory Stock Options, as determined by the Administrator at the time of grant of an option and subject to the applicable provisions of Section 422
of the Code, as amended, and the regulations promulgated thereunder. 
 2. Definitions. As used herein, the following
definitions shall apply: 
 (a) “Administrator” means the Board or any of its Committees appointed pursuant to
Section 4 of the Plan. 
 (b) “Board” means the Board of Directors of the Company. 

(c) “Code” means the Internal Revenue Code of 1986, as amended. 

(d) “Committee” means the Committee appointed by the Board of Directors in accordance with Section 4(a) and
(b) of the Plan. 
 (e) “Common Stock” means the Common Stock of the Company. 

(f) “Company” means ON24, Inc., a Delaware corporation. 

(g) “Consultant” means any person, including an advisor, who is engaged by the Company or any Parent or Subsidiary to
render services and is compensated for such services, and any director of the Company whether compensated for such services or not. 
 (h)
“Continuous Status as an Employee or Consultant” means the absence of any interruption or termination of service as an Employee or Consultant. Continuous Status as an Employee or Consultant shall not be considered interrupted
in the case of: (i) sick leave; (ii) military leave; (iii) any other leave of absence approved by the Administrator, provided that such leave is for a period of not more than 90 days, unless reemployment upon the expiration of such
leave is guaranteed by contract or statute, or unless provided otherwise pursuant to Company policy adopted from time to time; or (iv) in the case of transfers between locations of the Company or between the Company, its Subsidiaries or their
respective successors. For purposes of this Plan, a change in status from an Employee to a Consultant or from a Consultant to an Employee will not constitute an interruption of Continuous Status as an Employee or Consultant. 

 (i) “Employee” means any person, including officers and directors,
employed by the Company or any Parent or Subsidiary of the Company, with the status of employment determined based upon such minimum number of hours or periods worked as shall be determined by the Administrator in its discretion, subject to any
requirements of the Code. The payment of a director’s fee to a director shall not be sufficient to constitute “employment” of such director by the Company. 

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

(k) “Fair Market Value” means, as of any date, the fair market 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 National
Market of the National Association of Securities Dealers, Inc. Automated Quotation (“Nasdaq”) System, 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 system or exchange, or the exchange with the greatest volume of trading in Common Stock 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 quoted on the Nasdaq System (but not on the National Market thereof) or 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 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; or 
 (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. 
 (l) “Incentive Stock
Option” means an Option intended to qualify as an incentive stock option within the meaning of Section 422 of the Code, as designated in the applicable written Option Agreement. 

(m) “Nonstatutory Stock Option” means an Option not intended to qualify as an Incentive Stock Option, as designated in
the applicable written Option Agreement. 
 (n) “Option” means a stock option granted pursuant to the Plan. 

(o) “Option Agreement” means a written agreement between an Optionee and the Company reflecting the terms of an Option
granted under the Plan and includes any documents attached to such Option Agreement, including, but not limited to, a notice of stock option grant and a form of exercise notice. 

(p) “Optioned Stock” means the Common Stock subject to an Option. 

(q) “Optionee” means an Employee or Consultant who receives an Option. 

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

  
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 (s) “Plan” means this 2000 Stock Option Plan. 

(t) “Reporting Person” means an officer, director, or greater than 10% stockholder of the Company with the meaning of
Rule 16a-2 under the Exchange Act, who is required to file reports pursuant to Rule 16a-3 under the Exchange Act. 

(u) “Rule 16b-3” means Rule 16b-3
promulgated under the Exchange Act, as the same may be amended from time to time, or any successor provision. 
 (v)
“Share” means a share of the Common Stock, as adjusted in accordance with Section 11 of the Plan. 
 (w)
“Stock Exchange” means any stock exchange or consolidated stock price reporting system on which prices for the Common Stock are quoted at any given time. 

(x) “Subsidiary” means a “subsidiary corporation,” whether now or hereafter existing, as defined in
Section 424(f) of the Code, or any successor provision. 
 3. Stock Subject to the Plan. Subject to the provisions
of Section 11 of the Plan, the maximum aggregate number of shares that may be optioned and sold under the Plan is 1,034,000 shares of Common Stock. The shares may be authorized, but unissued, or reacquired Common Stock. If an Option should
expire or become unexercisable for any reason without having been exercised in full, the unpurchased Shares that were subject thereto shall, unless the Plan shall have been terminated, become available for future grant under the Plan. In addition,
any shares of Common Stock which are retained by the Company upon exercise of an Option in order to satisfy the exercise or purchase price for such Option or any withholding taxes due with respect to such exercise shall be treated as not issued and
shall continue to be available under the Plan. Shares repurchased by the Company pursuant to any repurchase right which the Company may have shall not be available for future grant under the Plan. 

4. Administration of the Plan. 

(a) Initial Plan Procedure. Prior to the date, if any, upon which the Company becomes subject to the Exchange Act, the
Plan shall be administered by the Board or a Committee appointed by the Board. 
 (b) Plan Procedure After the Date, if any, Upon Which
the Company Becomes Subject to the Exchange Act. 
 (i) Multiple Administrative Bodies. If permitted by
Rule 16b-3, grants under the Plan may be made by different bodies with respect to directors, non-director officers and Employees or Consultants who are not Reporting
Persons. 
 (ii) Administration With Respect to Reporting Persons. With respect to grants of Options to Employees who
are Reporting Persons, such grants shall be made by (A) the Board if the Board may make grants to Reporting Persons under the Plan in compliance with Rule 16b-3, or (B) a Committee designated by the
Board to make grants to Reporting Persons under the Plan, which Committee shall be constituted in such a manner as to 

  
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permit grants under the Plan to comply with Rule 16b-3. Once appointed, such Committee shall continue to serve in its designated capacity until otherwise
directed by the Board. From time to time the Board may increase the size of the Committee and appoint additional members thereof, remove members (with or without cause) and appoint new members in substitution therefor, fill vacancies, however
caused, and remove all members of the Committee and thereafter directly make grants to Reporting Persons under the Plan, all to the extent permitted by Rule 16b-3. 

(iii) Administration With Respect to Consultants and Other Employees. With respect to grants of Options to Employees or
Consultants who are not Reporting Persons, the Plan shall be administered by (A) the Board or (B) a Committee designated by the Board, which Committee shall be constituted in such a manner as to satisfy the legal requirements relating to
the administration of Incentive Stock Option plans, if any, of applicable corporate and securities laws, of the Code and of any applicable Stock Exchange (the “Applicable Laws”). Once appointed, such Committee shall continue to
serve in its designated capacity until otherwise directed by the Board. From time to time the Board may increase the size of the Committee and appoint additional members thereof, remove members (with or without cause) and appoint new members in
substitution therefor, fill vacancies, however caused, and remove all members of the Committee and thereafter directly administer the Plan, all to the extent permitted by the Applicable Laws. 

(c) 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, including the approval, if required, of any Stock Exchange, the Administrator shall have the authority, in its discretion: 

(i) to determine the Fair Market Value of the Common Stock, in accordance with Section 2(k) of the Plan; 

(ii) to select the Consultants and Employees to whom Options may from time to time be granted hereunder; 

(iii) to determine whether and to what extent Options are granted hereunder; 

(iv) to determine the number of shares of Common Stock to be covered by each such Option granted hereunder; 

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

(vi) to determine the terms and conditions, not inconsistent with the terms of the Plan, of any Option granted hereunder; 

(vii) to determine whether and under what circumstances an Option may be settled in cash under Section 9(f) instead of Common Stock; 

(viii) 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 shall have declined since the date the Option was granted; 

  
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 (ix) to construe and interpret the terms of the Plan and Options granted under the Plan;
and 
 (x) in order to fulfill the purposes of the Plan and without amending the Plan, to modify grants of Options to participants who are
foreign nationals or employed outside of the United States in order to recognize differences in local law, tax policies or customs. 
 (d)
Effect of Administrator’s Decision. All decisions, determinations and interpretations of the Administrator shall be final and binding on all holders of Options. 

5. Eligibility. 

(a) Recipients of Grants. Nonstatutory Stock Options may be granted to Employees and Consultants. Incentive Stock Options
may be granted only to Employees. An Employee or Consultant who has been granted an Option may, if he or she is otherwise eligible, be granted additional Options. 

(b) Type of Option. Each Option shall be designated in the Option Agreement as either an Incentive Stock Option or a
Nonstatutory Stock Option. However, notwithstanding such designations, to the extent that the aggregate Fair Market Value of Shares with respect to which Options designated as Incentive Stock Options are exercisable for the first time by any
Optionee during any calendar year (under all plans of the Company or any Parent or Subsidiary) exceeds $100,000, such excess 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, and the Fair Market Value of the Shares subject to an Incentive Stock Option shall be determined as of the date of the grant of such Option. 

(c) Employment Relationship. The Plan shall not confer upon any Optionee any right with respect to continuation of
employment or consulting relationship with the Company, nor shall it interfere in any way with such Optionee’s right or the Company’s right to terminate his or her employment or consulting relationship at any time, with or without cause.

 6. Term of Plan. The Plan shall become effective upon the earlier to occur of its adoption by the Board of Directors
or its approval by the stockholders of the Company as described in Section 18 of the Plan. It shall continue in effect for a term of ten years unless sooner terminated under Section 14 of the Plan. 

7. Term of Option. The term of each Option shall be the term stated in the Option Agreement; provided, however, that the
term shall be no more than ten years from the date of grant thereof or such shorter term as may be provided in the Option Agreement. However, 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 10% of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the term of the Option shall be five years from the date of grant thereof or such shorter term as may be
provided in the Option Agreement. 

  
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 8. Option Exercise Price and Consideration. 

(a) The per share exercise price for the Shares to be issued pursuant to exercise of an Option shall be such price as is determined by the
Board and set forth in the applicable Option Agreement, but shall be subject to the following: 
 (i) In the case of an Incentive Stock
Option that is: 
 (A) granted to an Employee who, at the time of the grant of such Incentive Stock Option, owns stock representing more
than 10% of the total combined voting power of all classes of stock of the Company or any Parent or Subsidiary, the per Share exercise price shall be no less than 110% of the Fair Market Value per Share on the date of grant. 

(B) granted to any 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 that is: 

(A) granted to a person who, at the time of the grant of such Option, owns stock representing more than 10% of the total combined voting power
of all classes of stock of the Company or any Parent or Subsidiary, the per Share exercise price shall be no less than 110% of the Fair Market Value per Share on the date of the grant. 

(B) granted to any person, the per Share exercise price shall be no less than 85% of the Fair Market Value per Share on the date of grant.

 (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) and may consist entirely of (1) cash, (2) check, (3) promissory note (subject to the provisions of
Section 153 of the Delaware General Corporation Law), (4) other Shares that (x) in the case of Shares acquired upon exercise of an Option, have been owned by the Optionee for more than six months on the date of surrender or such other
period as may be required to avoid a charge to the Company’s earnings, 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) authorization for the Company to retain from the total number of Shares as to which the Option is exercised that number of Shares having a Fair Market Value on the date of exercise equal to the exercise price for the total number of Shares
as to which the Option is exercised, (6) delivery of a properly executed exercise notice together with such other documentation as the Administrator and the broker, if applicable, shall require to effect an exercise of the Option and delivery
to the Company of the sale or loan proceeds required to pay the exercise price and any applicable income or employment taxes, (7) delivery of an irrevocable subscription agreement for the Shares that irrevocably obligates the option holder to
take and pay for the Shares not more than twelve months after the date of delivery of the subscription agreement, (8) any combination of the foregoing methods of payment, or (9) such other consideration and method of payment for the
issuance of Shares to the extent permitted under the Applicable Laws. 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. 

  
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 9. Exercise of Option. 

(a) Procedure for Exercise; Rights as a Stockholder. Any Option granted hereunder shall be exercisable at such times and
under such conditions as determined by the Administrator and reflected in the Option Agreement, which may include vesting requirements and/or including performance criteria with respect to the Company and/or the Optionee; provided, however, that
such Option shall become exercisable at the rate of at least 20% per year over five years from the date the Option is granted. In the event that any of the Shares issued upon exercise of an Option should be subject to a right of repurchase in the
Company’s favor, such repurchase right shall lapse at the rate of at least 20% per year over five years from the date the Option is granted. Notwithstanding the above, in the case of an Option granted to an officer, director or Consultant of
the Company or any Parent or Subsidiary of the Company, the Option may become fully exercisable, or a repurchase right, if any, in favor of the Company shall lapse, at any time or during any period established by the Administrator. 

An Option may not be exercised for a fraction of a Share. 

An Option shall be deemed to be exercised when written notice of such exercise has been given to the Company in accordance with the terms of
the Option by the person entitled to exercise the Option and the Company has received full payment for the Shares with respect to which the Option is exercised. Full payment may, as authorized by the Board, consist of any consideration and method of
payment allowable under Section 8(b) of the Plan. 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 stock certificate evidencing such Shares, no
right to vote or receive dividends or any other rights as a stockholder shall exist with respect to the Optioned Stock, not withstanding the exercise of the Option. The Company shall issue (or cause to be issued) such stock certificate promptly upon
exercise of the Option. No adjustment will be made for a dividend or other right for which the record date is prior to the date the stock certificate is issued, except as provided in Section 11 of the Plan. 

Exercise of an Option in any manner shall result in a decrease in the number of Shares that thereafter may be 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 Employment
or Consulting Relationship. Subject to Section 9(c) below, in the event of termination of an Optionee’s Continuous Status as an Employee or Consultant with the Company, such Optionee may, but only within three months (or
such other period of time not less than 30 days as is determined by the Administrator, with such determination in the case of an Incentive Stock Option being made at the time of grant of the Option and not exceeding three months) after the date of
such termination (but in no event later than the expiration date of the term of such Option as set forth in the Option Agreement), exercise his or her Option to the extent that the Optionee was entitled to exercise it at the date of such
termination. To the extent that the Optionee was not entitled to exercise the Option at the date of such termination, or if the Optionee does not exercise such Option to the extent so entitled within the time specified herein, the Option shall
terminate. No termination shall be deemed to occur and this Section 9(b) shall not apply if (i) the Optionee is a Consultant who becomes an Employee, or (ii) the Optionee is an Employee who becomes a Consultant. 

  
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 (c) Disability of Optionee. 

(i) Notwithstanding Section 9(b) above, in the event of termination of an Optionee’s Continuous Status as an Employee or Consultant
as a result of his or her total and permanent disability (within the meaning of Section 22(e)(3) of the Code), such Optionee may, but only within twelve months from the date of such termination (but in no event later than the expiration date of
the term of such Option as set forth in the Option Agreement), exercise the Option to the extent otherwise entitled to exercise it at the date of such termination. To the extent that the Optionee was not entitled to exercise the Option at the date
of termination, or if the Optionee does not exercise such Option to the extent so entitled within the time specified herein, the Option shall terminate. 

(ii) In the event of termination of an Optionee’s Continuous Status as an Employee or Consultant as a result of a disability which does
not fall within the meaning of total and permanent disability (as set forth in Section 22(e)(3) of the Code), such Optionee may, but only within six months from the date of such termination (but in no event later than the expiration date of the
term of such Option as set forth in the Option Agreement), exercise the Option to the extent otherwise entitled to exercise it at the date of such termination. However, to the extent that such Optionee fails to exercise an Option which is an
Incentive Stock Option (“ISO”) (within the meaning of Section 422 of the Code) within three months of the date of such termination, the Option will not qualify for ISO treatment under the Code. To the extent that the Optionee was not
entitled to exercise the Option at the date of termination, or if the Optionee does not exercise such Option to the extent so entitled within six months from the date of termination, the Option shall terminate. 

(d) Death of Optionee. In the event of the death of an Optionee during the period of Continuous Status as an Employee or
Consultant since the date of grant of the Option, or within 30 days following termination of the Optionee’s Continuous Status as an Employee or Consultant, the Option may be exercised, at any time within six months following the date of death
(but in no event later than the expiration date of the term of such Option as set forth in the Option Agreement), by such Optionee’s estate or by a person who acquired the right to exercise the Option by bequest or inheritance, but only to the
extent of the right to exercise that had accrued at the date of death or, if earlier, the date of termination of the Optionee’s Continuous Status as an Employee or Consultant. To the extent that the Optionee was not entitled to exercise the
Option at the date of death or termination, as the case may be, or if the Optionee does not exercise such Option to the extent so entitled within the time specified herein, the Option shall terminate. 

(e) Rule 16b-3. Options granted to Reporting Persons shall comply with Rule 16b-3 and shall contain such additional conditions or restrictions as may be required thereunder to qualify for the maximum exemption for Plan transactions. 

10. Stock Withholding to Satisfy Withholding Tax Obligations. At the discretion of the Administrator, Optionees may
satisfy withholding obligations as provided in this paragraph. When an Optionee incurs tax liability in connection with an Option, which tax liability is subject to tax withholding under applicable tax laws, and the Optionee is obligated to pay the
Company an amount required to be withheld under applicable tax laws, the Optionee 

  
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may satisfy the withholding tax obligation by one or some combination of the following methods: (a) by cash or check payment, or (b) out of the Optionee’s current compensation,
(c) if permitted by the Administrator, in its discretion, by surrendering to the Company Shares that (i) in the case of Shares previously acquired from the Company, have been owned by the Optionee for more than six months on the date of
surrender, and (ii) have a fair market value on the date of surrender equal to or less than the Optionee’s marginal tax rate times the ordinary income recognized, or (d) by electing to have the Company withhold from the Shares to be
issued upon exercise of the Option, if any, that number of Shares having a fair market value equal to the amount required to be withheld. For this purpose, 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 (the “Tax Date”). 
 Any surrender by a Reporting Person of previously
owned Shares to satisfy tax withholding obligations arising upon exercise of this Option must comply with the applicable provisions of Rule 16b-3. 

All elections by an Optionee to have Shares withheld to satisfy tax withholding obligations shall be made in writing in a form acceptable to
the Administrator and shall be subject to the following restrictions: 
 (a) the election must be made on or prior to the applicable Tax
Date; 
 (b) once made, the election shall be irrevocable as to the particular Shares of the Option as to which the election is made; and

 (c) all elections shall be subject to the consent or disapproval of the Administrator. 

In the event the election to have Shares withheld is made by an Optionee and the Tax Date is deferred under Section 83 of the Code
because no election is filed under Section 83(b) of the Code, the Optionee shall receive the full number of Shares with respect to which the Option is exercised but such Optionee shall be unconditionally obligated to tender back to the Company
the proper number of Shares on the Tax Date. 
 11. Adjustments Upon Changes in Capitalization, Merger or Certain Other
Transactions. 
 (a) Changes in Capitalization. Subject to any required action by the stockholders of the
Company, the number of shares of Common Stock covered by each outstanding Option, and the number of shares of Common Stock that have been authorized for issuance under the Plan but as to which no Options have yet been granted or that have been
returned to the Plan upon cancellation or expiration of an Option, as well as the price per share of Common Stock covered by each such outstanding Option, 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, recapitalization 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; provided, however, that conversion of any convertible securities of the Company shall not be deemed to have been 

  
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“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. 
 (b) Dissolution or Liquidation. In the event of the proposed dissolution or
liquidation of the Company, the Board shall notify the Optionee at least 15 days prior to such proposed action. To the extent it has not been previously exercised, the Option will terminate immediately prior to the consummation of such proposed
action. 
 (c) Merger or Sale of Assets. In the event of a proposed sale of all or substantially all of the
Company’s assets or a merger of the Company with or into another corporation where the successor corporation issues its securities to the Company’s stockholders, each outstanding Option shall be assumed or an equivalent option or right
shall be substituted by such successor corporation or a parent or subsidiary of such successor corporation, unless the successor corporation does not agree to assume the Option or to substitute an equivalent option, in which case such Option shall
terminate upon the consummation of the merger or sale of assets. For purposes of this Section 11(c), an Option shall be considered assumed, without limitation, if, at the time of issuance of the stock or other consideration upon such merger or
sale of assets, each Optionee would be entitled to receive upon exercise of an Option the same number and kind of shares of stock or the same amount of property, cash or securities as the Optionee would have been entitled to receive upon the
occurrence of such transaction if the Optionee had been, immediately prior to such transaction, the holder of the number of Shares of Common Stock covered by the Option at such time (after giving effect to any adjustments in the number of Shares
covered by the Option as provided for in this Section 11). 
 (d) Certain Distributions. In the event of any
distribution to the Company’s stockholders of securities of any other entity or other assets (other than dividends payable in cash or stock of the Company) without receipt of consideration by the Company, the Administrator may, in its
discretion, appropriately adjust the price per share of Common Stock covered by each outstanding Option to reflect the effect of such distribution. 

12. Non-Transferability of Options. Options 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 or purchased during the lifetime of the Optionee only by the Optionee. 

13. Time of Granting Options. The date of grant of an Option shall, for all purposes, be the date on which the
Administrator makes the determination granting such Option, or such other date as is determined by the Board; provided, however, that in the case of any Incentive Stock Option, the grant date shall be the later of the date on which the Administrator
makes the determination granting such Incentive Stock Option or the date of commencement of the Optionee’s employment relationship with the Company. Notice of the determination shall be given to each Employee or Consultant to whom an Option is
so granted within a reasonable time after the date of such grant. 

  
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 14. Amendment and Termination of the Plan. 

(a) Authority to Amend or Terminate. The Board may at any time amend, alter, suspend or discontinue the Plan, but no
amendment, alteration, suspension or discontinuation shall be made that would impair the rights of any Optionee under any grant theretofore made, without his or her consent. In addition, to the extent necessary and desirable to comply with Rule 16b-3 or with Section 422 of the Code (or any other applicable law or regulation, including the requirements of any Stock Exchange), the Company shall obtain stockholder approval of any Plan amendment in such a
manner and to such a degree as required. 
 (b) Effect of Amendment or Termination. No amendment or termination of the
Plan shall adversely affect Options already granted, unless mutually agreed otherwise between the Optionee and the Board, which agreement must be in writing and signed by the Optionee and the Company. 

15. Conditions Upon Issuance of Shares. 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 pursuant thereto shall comply with all relevant provisions of law, including, without limitation, the Securities Act of 1933, as amended, the Exchange Act, the rules and
regulations promulgated thereunder, and the requirements of any Stock Exchange. 
 As a condition to the exercise of an Option, the Company
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 by law. 
 16. Reservation of Shares. The Company, during the
term of this Plan, will at all times reserve and keep available such number of Shares as shall be sufficient to satisfy the requirements of the Plan. 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. Option Agreements. Options shall be evidenced by Option
Agreements in such form(s) as the Administrator shall approve from time to time. 
 18. Stockholder Approval.
Continuance of the Plan shall be subject to approval by the stockholders of the Company within twelve months before or after the date the Plan is adopted. Such stockholder approval shall be obtained in the degree and manner required under applicable
state and federal law and the rules of any Stock Exchange upon which the Common Stock is listed. All Options issued under the Plan shall become void in the event such approval is not obtained. 

  
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 19. Information and Documents to Optionees. The Company shall provide
financial statements at least annually to each Optionee during the period such Optionee has one or more Options outstanding, and in the case of an individual who acquired Shares pursuant to the Plan, during the period such individual owns such
Shares. The Company shall not be required to provide such information if the issuance of Options under the Plan is limited to key employees whose duties in connection with the Company assure their access to equivalent information. In addition, at
the time of issuance of any securities under the Plan, the Company shall provide to the Optionee a copy of the Plan and any agreement(s) pursuant to which securities granted under the Plan are issued. 

  
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 ON24, INC. 

2000 Stock Option Plan 

STOCK OPTION AGREEMENT 

OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE OPTION HEREOF IS EARNED ONLY BY CONTINUING EMPLOYMENT OR
CONSULTANCY 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 NOTHING IN THIS AGREEMENT, NOR IN THE COMPANY’S STOCK OPTION
PLAN WHICH IS INCORPORATED HEREIN BY REFERENCE, SHALL CONFER UPON OPTIONEE ANY RIGHT WITH RESPECT TO CONTINUATION OF EMPLOYMENT OR CONSULTANCY BY THE COMPANY, NOR SHALL IT INTERFERE IN ANY WAY WITH OPTIONEE’S RIGHT OR THE COMPANY’S RIGHT
TO TERMINATE OPTIONEE’S EMPLOYMENT OR CONSULTANCY 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. 
 1. Grant of Option. ON24, Inc., a Delaware corporation (the
“Company”), hereby grants to <<Optionee>> (“Optionee”), an option (the “Option”) to purchase a total number of shares of Common Stock (the “Shares”) set forth in
the Notice of Stock Option Grant, at the exercise price per share set forth in the Notice of Stock Option Grant (the “Exercise Price”) subject to the terms, definitions and provisions of the ON24, Inc.’s 2000 Stock Option Plan
(the “Plan”) adopted by the Company, which is incorporated herein by reference. Unless otherwise defined herein, the terms defined in the Plan shall have the same defined meanings in this Option. 

If designated an Incentive Stock Option, this Option is intended to qualify as an Incentive Stock Option as defined in Section 422 of the
Code. 
 2. Exercise of Option. This Option shall be exercisable during its Term in accordance with the Vesting Schedule
set out in the Notice of Stock Option Grant and with the provisions of Section 9 of the Plan as follows: 
 (a) Right to
Exercise. 
 (i) This Option may not be exercised for a fraction of a share. 

  
 1 

 (ii) In the event of Optionee’s death, disability or other termination of employment,
the exercisability of the Option is governed by Sections 5, 6 and 7 below, subject to the limitation contained in Section 2(a)(i). 

(iii) In no event may this Option be exercised after the Expiration Date of this Option as set forth in the Notice of Stock Option Grant. 

(b) Method of Exercise. This Option shall be exercisable by execution and delivery of the Exercise Notice and Restricted
Stock Purchase Agreement attached hereto as Exhibit A (the “Exercise Agreement”) or of any other form of written notice approved for such purpose by the Company which shall state the election to exercise the Option, the number
of Shares in respect of which the Option is being exercised, and such other representations and agreements as to the holder’s investment intent with respect to such shares of Common Stock as may be required by the Company pursuant to the
provisions of the Plan. Such written notice shall be signed by Optionee and shall be delivered in person or by certified mail to the Secretary of the Company. The written notice shall be accompanied by payment of the Exercise Price. This Option
shall be deemed to be exercised upon receipt by the Company of such written notice accompanied by the Exercise Price. 
 No Shares will be
issued pursuant to the exercise of an Option unless such issuance and such exercise shall comply with all relevant provisions of applicable law and the requirements of any stock exchange upon which the Shares may then be listed. Assuming such
compliance, for income tax purposes the Shares shall be considered transferred to Optionee on the date on which the Option is exercised with respect to such Shares. 

3. Method of Payment. Payment of the Exercise Price shall be by any of the following, or a combination thereof, at the
election of Optionee: 
 (a) cash; 

(b) check; 
 (c) surrender of
other shares of Common Stock of the Company which (i) in the case of Shares acquired pursuant to the exercise of a Company option, have been owned by Optionee for more than six months on the date of surrender, and (ii) have a Fair Market
Value on the date of surrender equal to the Exercise Price of the Shares as to which the Option is being exercised; or 
 (d) if there is a
public market for the Shares and they are registered under the Exchange Act, delivery of a properly executed exercise notice together with irrevocable instructions to a broker to deliver promptly to the Company the amount of sale or loan proceeds
required to pay the Exercise Price. 

  
 2 

 4. Restrictions on Exercise. This Option may not be exercised until
such time as the Plan has been approved by the stockholders 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 federal or
state securities or other law or regulation, including any rule under Part 207 of Title 12 of the Code of Federal Regulations as promulgated by the Federal Reserve Board. As a condition to the exercise of this Option, the Company may require
Optionee to make any representation and warranty to the Company as may be required by any applicable law or regulation. 
 5.
Termination of Relationship. In the event of termination of Optionee’s Continuous Status as an Employee or Consultant, Optionee may, to the extent otherwise so entitled at the date of such termination (the
“Termination Date”), exercise this Option during the Termination Period set forth in the Notice of Stock Option Grant. To the extent that Optionee was not entitled to exercise this Option at such Termination Date, or if Optionee
does not exercise this Option within the Termination Period, the Option shall terminate. 
 6. Disability of Optionee.

 (a) Notwithstanding the provisions of Section 5 above, in the event of termination of Optionee’s Continuous Status as an
Employee or Consultant as a result of Optionee’s total and permanent disability (as defined in Section 22(e)(3) of the Code), Optionee may, but only within receive months from the Termination Date (but in no event later than the Expiration
Date set forth in the Notice of Stock Option Grant), exercise this Option to the extent Optionee was entitled to exercise it as of such Termination Date. To the extent that Optionee was not entitled to exercise the Option as of the Termination Date,
or if Optionee does not exercise such Option (to the extent so entitled) within the time specified in this Section 6(a), the Option shall terminate. 

(b) Notwithstanding the provisions of Section 5 above, in the event of termination of Optionee’s consulting relationship or
Continuous Status as an Employee as a result of disability not constituting a total and permanent disability (as set forth in Section 22(e)(3) of the Code), Optionee may, but only within six months from the Termination Date (but in no event
later than the Expiration-Date set forth in the Notice of Stock Option Grant), exercise the Option to the extent Optionee was entitled to exercise it as of such Termination Date; provided, however, that if this is an Incentive Stock Option and
Optionee fails to exercise this Incentive Stock Option within three months from the Termination Date, this Option will cease to qualify as an Incentive Stock Option (as defined in Section 422 of the Code) and Optionee will be treated for
federal income tax purposes as having received ordinary income at the time of such exercise in an amount generally measured by the difference between the Exercise Price for the Shares and the Fair Market Value of the Shares on the date of exercise.
To the extent that Optionee was not entitled to exercise the Option at the Termination Date, or if Optionee does not exercise such Option to the extent so entitled within the time specified in this Section 6(b), the Option shall terminate. 

7. Death of Optionee. In the event of the death of Optionee (a) during the Term of this Option and while an Employee
or Consultant of the Company and having been in Continuous Status as an Employee or Consultant since the date of grant of the Option, or (b) within 30 days after Optionee’s Termination Date, the Option may be exercised at any

  
 3 

 
time within six months following the date of death (but in no event later than the Expiration Date set forth in the Notice of Stock Option Grant), by Optionee’s estate or by a person who
acquired the right to exercise the Option by bequest or inheritance, but only to the extent of the right to exercise that had accrued at the Termination Date. 

8. 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 him or her. The terms of this Option shall be binding upon the executors, administrators, heirs, successors and assigns of
Optionee. 
 9. Term of Option. This Option may be exercised only within the Term set forth in the Notice of Stock
Option Grant, subject to the limitations set forth in Section 7 of the Plan. 
 10. Tax Consequences. Set forth
below is a brief summary as of the date of this Option of certain of the federal and California tax consequences of exercise of this Option and disposition of the Shares under the laws in effect as of the Date of Grant. THIS SUMMARY IS NECESSARILY
INCOMPLETE, AND THE TAX LAWS AND REGULATIONS ARE SUBJECT TO CHANGE. OPTIONEE SHOULD CONSULT A TAX ADVISER BEFORE EXERCISING THIS OPTION OR DISPOSING OF THE SHARES. 

(a) Exercise of Incentive Stock Option. If this Option qualifies as an Incentive Stock Option, there will be no regular
federal or California income tax liability upon the exercise of the Option, although the excess, if any, of the Fair Market Value of the Shares on the date of exercise over the Exercise Price will be treated as an adjustment to the alternative
minimum tax for federal tax purposes and may subject Optionee to the alternative minimum tax in the year of exercise. 
 (b) Exercise
of Nonstatutory Stock Option. If this Option does not qualify as an Incentive Stock Option, there may be a regular federal income tax liability and a California income tax liability upon the exercise of the Option. Optionee will be
treated as having received compensation income (taxable at ordinary income tax rates) equal to the excess, if any, of the Fair Market Value of the Shares on the date of exercise over the Exercise Price. If Optionee is an employee, the Company will
be required to withhold from Optionee’s compensation or collect from Optionee and pay to the applicable taxing authorities an amount equal to a percentage of this compensation income at the time of exercise. 

(c) Disposition of Shares. In the case of a Nonstatutory Stock Option, if Shares are held for at least one year, any gain
realized on disposition of the Shares will be treated as long-term capital gain for federal and California income tax purposes. In the case of an Incentive Stock Option, if Shares transferred pursuant to the Option are held for at least one year
after exercise and are disposed of at least two years after the Date of Grant, any gain realized on disposition of the Shares will also be treated as long-term capital gain for federal and California income tax purposes. In either case, the
long-term 

  
 4 

 
capital gain will be taxed for federal income tax and alternative minimum tax purposes at a maximum rate of 28% if the Shares are held more than one year but less than 18 months after exercise
and at 20% if the Shares are held more than 18 months after exercise. If Shares purchased under an Incentive Stock Option are disposed of within one year after exercise or within two years after the Date of Grant, any gain realized on such
disposition will be treated as compensation income (taxable at ordinary income rates) to the extent of the difference between the Exercise Price and the lesser of (i) the Fair Market Value of the Shares on the date of exercise, or (ii) the
sale price of the Shares. 
 (d) Notice of Disqualifying Disposition of Incentive Stock Option Shares. If the Option
granted to Optionee herein is an Incentive Stock Option, and if Optionee sells or otherwise disposes of any of the Shares acquired pursuant to the Incentive Stock Option on or before the later of (i) the date two years after the Date of Grant,
or (ii) the date one year after the date of exercise, Optionee shall immediately notify the Company in writing of such disposition. Optionee acknowledges and agrees that he or she may be subject to income tax withholding by the Company on the
compensation income recognized by Optionee from the early disposition by payment in cash or out of the current earnings paid to Optionee. 

11. Withholding Tax Obligations. Optionee understands that, upon exercising a Nonstatutory Stock Option, he or she will
recognize income for tax purposes in an amount equal to the excess of the then Fair Market Value of the Shares over the Exercise Price. However, the timing of this income recognition may be deferred for up to six months if Optionee is subject to
Section 16 of the Exchange Act. If Optionee is an employee, the Company will be required to withhold from Optionee’s compensation, or collect from Optionee and pay to the applicable taxing authorities an amount equal to a percentage of
this compensation income. Additionally, Optionee may at some point be required to satisfy tax withholding obligations with respect to the disqualifying disposition of an Incentive Stock Option. Optionee shall satisfy his or her tax withholding
obligation arising upon the exercise of this Option by one or some combination of the following methods: (a) by cash payment, (b) out of Optionee’s current compensation, (c) if permitted by the Administrator, in its discretion,
by surrendering to the Company Shares which (i) in the case of Shares previously acquired from the Company, have been owned by Optionee for more than six months on the date of surrender, and (ii) have a Fair Market Value on the date of
surrender equal to or greater than Optionee’s marginal tax rate times the ordinary income recognized, or (d) by electing to have the Company withhold from the Shares to be issued upon exercise of the Option that number of Shares having a
Fair Market Value equal to the amount required to be withheld. For this purpose, 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 (the “Tax
Dated”). 
 If Optionee is subject to Section 16 of the Exchange Act (an “Insider”), any surrender of
previously owned Shares to satisfy tax withholding obligations arising upon exercise of this Option must comply with the applicable provisions of Rule 16b-3 promulgated under the Exchange Act
(“Rule 16b-3”). 

  
 5 

 All elections by Optionee to have Shares withheld to satisfy tax withholding obligations
shall be made in writing in a form acceptable to the Administrator and shall be subject to the following restrictions: 
 (a) the election
must be made on or prior to the applicable Tax Date; 
 (b) once made, the election shall be irrevocable as to the particular Shares of the
Option as to which the election is made; and 
 (c) all elections shall be subject to the consent or disapproval of the Administrator. 

12. Market Standoff Agreement. In connection with the initial public offering of the Company’s securities and upon
request of the Company or the underwriters managing such underwritten offering of the Company’s securities, Optionee agrees not to sell, make any short sale of, loan, grant any option for the purchase of, or otherwise dispose of any securities
of the Company (other than those included in the registration) without the prior written consent of the Company or such underwriters, as the case may be, for such period of time (not to exceed 180 days) from the effective date of such registration
as may be requested by the Company or such managing underwriters and to execute an agreement reflecting the foregoing as may be requested by the underwriters at the time of the Company’s initial public offering. 

[Signature Page Follows] 

  
 6 

 This Agreement may be executed in two or more counterparts, each of which shall be deemed an original and
all of which together shall constitute one document. 
  

			
	 ON24, INC.

a Delaware corporation

		
	 By:
	 	      

	 Name:
	 	  

		 	    (print)
	 Title:
	 	  

 OPTIONEE ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES PURSUANT TO THE OPTION HEREOF IS EARNED ONLY
BY CONTINUING CONSULTANCY OR EMPLOYMENT 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 NOTHING IN THIS AGREEMENT, NOR IN THE
COMPANY’S STOCK OPTION PLAN WHICH IS INCORPORATED HEREIN BY REFERENCE, SHALL CONFER UPON OPTIONEE ANY RIGHT WITH RESPECT TO CONTINUATION OF EMPLOYMENT OR CONSULTANCY BY THE COMPANY, NOR SHALL IT INTERFERE IN ANY WAY WITH OPTIONEE’S RIGHT
OR THE COMPANY’S RIGHT TO TERMINATE OPTIONEE’S EMPLOYMENT OR CONSULTANCY 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. 
  

							
	 Dated:
	 	  
	 		 	  

		 		 		 	 <<Optionee>>

  
 7 

 EXHIBIT A 

ON24, INC. 
 2000 Stock
Option Plan 
 EXERCISE NOTICE AND RESTRICTED STOCK PURCHASE AGREEMENT 

This Agreement (“Agreement”) is made as of, by and between ON24, Inc., a Delaware corporation (the
“Company”), and <<Optionee>> (“Purchasers”). To the extent any capitalized terms used in this Agreement are not defined, they shall have the meaning ascribed to them in the 2000 Stock Option Plan.

 1. Exercise of Option. Subject to the terms and conditions hereof, Purchaser hereby elects to exercise his or her
option to purchase __________ shares of the Common Stock (the “Shares”) of the Company under and pursuant to the Company’s 2000 Stock Option Plan (the “Plan”) and the Stock Option Agreement dated
<<GrantDate>>, (the “Option Agreement”). The purchase price for the Shares shall be $<<ExercisePrice>> per Share for a total purchase price of $_____________. The term “Shares”
refers to the purchased Shares and all securities received in replacement of the Shares or as stock dividends or splits, all securities received in replacement of the Shares in a recapitalization, merger, reorganization, exchange or the like, and
all new, substituted or additional securities or other properties to which Purchaser is entitled by reason of Purchaser’s ownership of the Shares. 

2. Time and Place of Exercise. The purchase and sale of the Shares under this Agreement shall occur at the principal
office of the Company simultaneously with the execution and delivery of this Agreement in accordance with the provisions of Section 2(b) of the Option Agreement. On such date, the Company will deliver to Purchaser a certificate representing the
Shares to be purchased by Purchaser (which shall be issued in Purchaser’s name) against payment of the exercise price therefor by Purchaser by (a) check made payable to the Company, (b) cancellation of indebtedness of the Company to
Purchaser, (c) delivery of shares of the Common Stock of the Company in accordance with Section 3 of the Option Agreement, or (d) a combination of the foregoing. 

3. Limitations on Transfer. In addition to any other limitation on transfer created by applicable securities laws,
Purchaser shall not assign, encumber or dispose of any interest in the Shares except in compliance with the provisions below and applicable securities laws. 

(a) Right of First Refusal. Before any Shares held by Purchaser or any transferee of Purchaser (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 assignees shall have a right of first refusal to purchase the Shares on the terms and
conditions set forth in this Section 3(a) (the “Right of First Refusal”). 

  
 8 

 (i) 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 terms and conditions of each proposed sale or transfer. The Holder shall offer the Shares at the same price
(the “Offered Price”) and upon the same terms (or terms as similar as reasonably possible) to the Company or its assignee(s). 

(ii) Exercise of Right of First Refusal. At any time within 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 (iii) below. 
 (iii) Purchase Price. The purchase price (“Purchase Price”) for the
Shares purchased by the Company or its assignee(s) under this Section 3(a) 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. 

(iv) 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. 
 (v) 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 3(a), 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 60 days after the date of the Notice and provided further that any such sale or other transfer is effected in accordance with any
applicable securities laws and the Proposed Transferee agrees in writing that the provisions of this Section 3 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, or if the Holder proposes to change the price or other terms to make them more favorable to the Proposed Transferee, 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. 

(vi) Exception for Certain Family Transfers. Anything to the contrary contained in this Section 3(a)
notwithstanding, the transfer of any or all of the Shares during Purchaser’s lifetime or on Purchaser’s death by will or intestacy to Purchaser’s Immediate Family (as defined below) or a trust for the benefit of Purchaser’s
immediate Family shall be exempt from the provisions of this Section 3(a). “Immediate  

  
 9 

 
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 3. 

(b) Involuntary Transfer. 

(i) Company’s Right to Purchase upon Involuntary Transfer. In the event, at any time after the date of this
Agreement, of any transfer by operation of law or other involuntary transfer (including divorce or death, but excluding, in the event of death, a transfer to Immediate Family as set forth in Section 3(a)(vi) above) of all or a portion of the
Shares by the record holder thereof, the Company shall have the right to purchase all of the Shares transferred at the greater of the purchase price paid by Purchaser pursuant to this Agreement or the Fair Market Value of the Shares on the date of
transfer. Upon such a transfer, the person acquiring the Shares shall promptly notify the Secretary of the Company of such transfer. The right to purchase such Shares shall be provided to the Company for a period of 30 days following receipt by the
Company of written notice by the person acquiring the Shares. 
 (ii) Price for Involuntary Transfer. With respect to
any stock to be transferred pursuant to Section 3(b)(i), the price per Share shall be a price set by the Board of Directors of the Company that will reflect the current value of the stock in terms of present earnings and future prospects of the
Company. The Company shall notifier Purchaser or his or her executor of the price so determined within 30 days after receipt by it of written notice of the transfer or proposed transfer of Shares. However, if the Purchaser does not agree with the
valuation as determined by the Board of Directors of the Company, the Purchaser shall be entitled to have the valuation determined by an independent appraiser to be mutually agreed upon by the Company and the Purchaser and whose fees shall be borne
equally by the Company and the Purchaser. 
 (c) Assignment. The right of the Company to purchase any part of the Shares
may be assigned in whole or in part to any stockholder or stockholders of the Company or other persons or organizations; provided, however, that an assignee, other than a corporation that is the Parent or a 100% owned Subsidiary of the Company, must
pay the Company, upon assignment of such right, cash equal to the difference between the original purchase price and Fair Market Value, if the original purchase price is less than the Fair Market Value of the Shares subject to the assignment. 

(d) Restrictions Binding on Transferees. All transferees of Shares or any interest therein will receive and hold such
Shares or interest subject to the provisions of this Agreement. Any sale or transfer of the Shares shall be void unless the provisions of this Agreement are satisfied. 

(e) Termination of Rights. The Right of First Refusal and the Company’s right to repurchase the Shares in the event
of an involuntary transfer pursuant to Section 3(b) above shall terminate 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 (the “Securities Act”). 

  
 10 

 (f) Market Standoff Agreement. In connection with the initial public
offering of the Company’s securities and upon request of the Company or the underwriters managing such underwritten offering of the Company’s securities, Purchaser agrees not to sell, make any short sale of, loan, grant any option for the
purchase of, or otherwise dispose of any securities of the Company (other than those included in the registration) without the prior written consent of the Company or such underwriters, as the case may be, for such period of time (not to exceed 180
days) from the effective date of such registration as may be requested by the Company or such managing underwriters and to execute an agreement reflecting the foregoing as may be requested by the underwriters at the time of the Company’s
initial public offering. 
 4. Investment and Taxation Representations. In connection with the purchase of the Shares,
Purchaser represents to the Company the following: 
 (a) Purchaser is aware of the Company’s business affairs and financial condition
and has acquired sufficient information about the Company to reach an informed and knowledgeable decision to acquire the Shares. Purchaser is purchasing the Shares for investment for his or her own account only and not with a view to, or for resale
in connection with, any “distribution” thereof within the meaning of the Securities Act. 
 (b) Purchaser understands that
the Shares have not been registered under the Securities Act by reason of a specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of Purchaser’s investment intent as expressed herein. 

(c) Purchaser understands that the Shares are “restricted securities” under applicable U.S. federal and state securities laws
and that, pursuant to these laws, Purchaser must hold the Shares indefinitely unless they are registered with the Securities and Exchange Commission and qualified by state authorities, or an exemption from such registration and qualification
requirements is available. Purchaser acknowledges that the Company has no obligation to register or qualify the Shares for resale. Purchaser further acknowledges that if an exemption from registration or qualification is available, it may be
conditioned on various requirements including, but not limited to, the time and manner of sale, the holding period for the Shares, and requirements relating to the Company which are outside of the Purchaser’s control, and which the Company is
under no obligation and may not be able to satisfy. 
 (d) 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 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. 

  
 11 

 5. Restrictive Legends and Stop-Transfer Orders. 

(a) Legends. The certificate or certificates representing the Shares shall bear the following legends (as well as any
legends required by applicable state and federal corporate and securities laws): 
 (i) THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE NOT
BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AND HAVE BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR DISTRIBUTION THEREOF. NO SUCH SALE OR DISTRIBUTION MAY BE EFFECTED WITHOUT AN EFFECTIVE REGISTRATION
STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL IN A FORM SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OF 1933. 

(ii) THE SHARES REPRESENTED BY THIS CERTIFICATE MAY BE TRANSFERRED ONLY IN ACCORDANCE WITH THE TERMS OF AN AGREEMENT BETWEEN THE COMPANY AND
THE STOCKHOLDER A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY. 
 (b) Stop-Transfer Notices. Purchaser
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 this Agreement or (ii) to treat as owner of such Shares or to accord the right to
vote or pay dividends to any purchaser or other transferee to whom such Shares shall have been so transferred. 
 (d) Removal of
Legend. When all of the following events have occurred, the Shares then held by Purchaser will no longer be subject to the legend referred to in Section 5(a)(ii): (i) the termination of the Right of First Refusal; and
(ii) the expiration or termination of the market standoff provisions of Section 3(f) (and of any agreement entered pursuant to Section 3(f). After such time, and upon Purchaser’s request, a new certificate or certificates
representing the Shares not repurchased shall be issued without the legend referred to in Section 5(a)(ii), and delivered to Purchaser. 

6. No Employment Rights. Nothing in this Agreement shall affect in any manner whatsoever the right or power of the
Company, or a Parent or Subsidiary of the Company, to terminate Purchaser’s employment or consulting relationship, for any reason, with or without cause. 

  
 12 

 7. Miscellaneous. 

(a) Governing Law. This Agreement and all acts and transactions pursuant hereto and the rights and obligations of the
parties hereto shall be governed, construed and interpreted in accordance with the laws of the State of California, without giving effect to principles of conflicts of law. 

(b) Entire Agreement; Enforcement of Rights. This Agreement sets forth the entire agreement and understanding of the
parties relating to the subject matter herein and merges all prior discussions between them. No modification of or amendment to this Agreement, nor any waiver of any rights under this Agreement, shall be effective unless in writing signed by the
parties to this Agreement. The failure by either party to enforce any rights under this Agreement shall not be construed as a waiver of any rights of such party. 

(c) Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, the
parties agree to renegotiate such provision in good faith. In the event that the parties cannot reach a mutually agreeable and enforceable replacement for such provision, then (i) such provision shall be excluded from this Agreement,
(ii) the balance of the Agreement shall be interpreted as if such provision were so excluded and (iii) the balance of the Agreement shall be enforceable in accordance with its terms. 

(d) Construction. This Agreement is the result of negotiations between and has been reviewed by each of the parties hereto
and their respective counsel, if any; accordingly, this Agreement shall be deemed to be the product of all of the parties hereto, and no ambiguity shall be construed in favor of or against anyone of the parties hereto. 

(e) Notices. Any notice required or permitted by this Agreement shall be in writing and shall be deemed sufficient when
delivered personally or sent by telegram or fax or 48 hours after being deposited in the U.S. mail, as certified or registered mail, with postage prepaid, and addressed to the party to be notified at such party’s address as set forth below or
as subsequently modified by written notice. 
 (f) Counterparts. This Agreement may be executed in two or more
counterparts, each of which shall be deemed an original and all of which together shall constitute one instrument. 
 (g) Successors
and Assigns. The rights and benefits of this Agreement shall inure to the benefit of, and be enforceable by the Company’s successors and assigns. The rights and obligations of Purchaser under this Agreement may only be assigned
with the prior written consent of the Company. 
 [Signature Page Follows] 

  
 13 

 The parties have executed this Exercise Notice and Restricted Stock Purchase Agreement as of
the date first set forth above. 
  

			
	 COMPANY:

	
	 ON24, INC.

	 a Delaware corporation

		
	 By:
	 	  

	Name:	 	  

		 	(print)
	Title:	 	  

	
	 833 Market Street, Suite 612

	 San Francisco, CA 94103

	
	 PURCHASER:

	
	 <<OPTIONEE>>

 

	  

(Signature)
  

	  

(Print Name)

	
	 Address:

	
	  

	
	  

 I, ______________________, spouse of <<Optionee>>, have read and hereby approve the foregoing
Agreement. In consideration of the Company’s granting my spouse the right to purchase the Shares as set forth in the Agreement, I hereby agree to be bound irrevocably by the Agreement and further agree that any community property or similar
interest that I may have in the Shares shall hereby be similarly bound by the Agreement. I hereby appoint my spouse as my attorney-in-fact with respect to any amendment
or exercise of any rights under the Agreement. 
  

	
	  

Spouse of <<Optionee>> 

  
 14 

 RECEIPT 

The undersigned hereby acknowledges receipt of Certificate No. ______ for __________________ shares of Common Stock of ON24, Inc. 

 

							
	 Dated:
	 	  
	 	         
	 	  

		 		 		 	 <<Optionee>>

  
 15 

 RECEIPT 

ON24, Inc. hereby acknowledges receipt of a check in the amount of $________________ given by <<Optionee>> as consideration
for Certificate No.______ for shares of Common Stock of ON24, Inc. 
  

			
	 Dated:
	 	  

  

			
	 ON24, Inc.

	a Delaware corporation
		
	By:	 	          

	Name:	 	  

		 	(print)
	Title:	 	  

  
 16EX-10.2

 Exhibit 10.2 

ON24, INC. 
 2014 STOCK
PLAN 
 TABLE OF CONTENTS 
  

									
	 	 	 	 	 	  	Page	 
	 1.
	 	 Establishment, Purpose and Term of Plan
	  	 	1	 
				
		 	 1.1
	 	Establishment	  	 	1	 
				
		 	 1.2
	 	Purpose	  	 	1	 
				
		 	 1.3
	 	Term of Plan	  	 	1	 
			
	 2.
	 	 Definitions and Construction
	  	 	1	 
				
		 	 2.1
	 	Definitions	  	 	1	 
				
		 	 2.2
	 	Construction	  	 	6	 
			
	 3.
	 	 Administration
	  	 	6	 
				
		 	 3.1
	 	Administration by the Board	  	 	6	 
				
		 	 3.2
	 	Authority of Officers	  	 	6	 
				
		 	 3.3
	 	Powers of the Board	  	 	7	 
				
		 	 3.4
	 	Administration with Respect to Insiders	  	 	7	 
				
		 	 3.5
	 	Indemnification	  	 	8	 
			
	 4.
	 	 Shares Subject to Plan
	  	 	8	 
				
		 	 4.1
	 	Maximum Number of Shares Issuable	  	 	8	 
				
		 	 4.2
	 	Adjustment for Unissued or Forfeited Predecessor Plan Shares	  	 	8	 
				
		 	 4.3
	 	Share Counting	  	 	9	 
				
		 	 4.4
	 	Adjustments for Changes in Capital Structure	  	 	9	 
				
		 	 4.5
	 	Assumption or Substitution of Awards	  	 	10	 
			
	 5.
	 	 Eligibility, Participation and Option Limitations
	  	 	10	 
				
		 	 5.1
	 	Persons Eligible for Awards	  	 	10	 
				
		 	 5.2
	 	Participation in the Plan	  	 	10	 
				
		 	 5.3
	 	Incentive Stock Option Limitations	  	 	10	 
			
	 6.
	 	 Stock Options
	  	 	11	 
				
		 	 6.1
	 	Exercise Price	  	 	11	 
				
		 	 6.2
	 	Exercisability and Term of Options	  	 	11	 
				
		 	 6.3
	 	Payment of Exercise Price	  	 	11	 
				
		 	 6.4
	 	Effect of Termination of Service	  	 	12	 
				
		 	 6.5
	 	Transferability of Options	  	 	13	 

 TABLE OF CONTENTS 

(continued) 
  

									
	 	 	 	 	 	  	Page	 
	 7.
	 	Restricted Stock Awards	  	 	14	 
				
		 	7.1	 	Types of Restricted Stock Awards Authorized	  	 	14	 
				
		 	7.2	 	Purchase Price	  	 	14	 
				
		 	7.3	 	Purchase Period	  	 	14	 
				
		 	7.4	 	Payment of Purchase Price	  	 	14	 
				
		 	7.5	 	Vesting and Restrictions on Transfer	  	 	15	 
				
		 	7.6	 	Voting Rights; Dividends and Distributions	  	 	15	 
				
		 	7.7	 	Effect of Termination of Service	  	 	15	 
				
		 	7.8	 	Nontransferability of Restricted Stock Award Rights	  	 	16	 
			
	 8.
	 	Restricted Stock Units	  	 	16	 
				
		 	8.1	 	Grant of Restricted Stock Unit Awards	  	 	16	 
				
		 	8.2	 	Purchase Price	  	 	16	 
				
		 	8.3	 	Vesting	  	 	16	 
				
		 	8.4	 	Voting Rights, Dividend Equivalent Rights and Distributions	  	 	16	 
				
		 	8.5	 	Effect of Termination of Service	  	 	17	 
				
		 	8.6	 	Settlement of Restricted Stock Unit Awards	  	 	17	 
				
		 	8.7	 	Nontransferability of Restricted Stock Unit Awards	  	 	18	 
			
	 9.
	 	Standard Forms of Award Agreements	  	 	18	 
				
		 	9.1	 	Award Agreements	  	 	18	 
				
		 	9.2	 	Authority to Vary Terms	  	 	18	 
			
	 10.
	 	Change in Control	  	 	18	 
				
		 	10.1	 	Effect of Change in Control on Awards	  	 	18	 
				
		 	10.2	 	Federal Excise Tax Under Section 4999 of the Code	  	 	20	 
			
	 11.
	 	Tax Withholding	  	 	20	 
				
		 	11.1	 	Tax Withholding in General	  	 	20	 
				
		 	11.2	 	Withholding in or Directed Sale of Shares	  	 	21	 
			
	 12.
	 	Compliance with Section 409A	  	 	21	 
				
		 	12.1	 	In General	  	 	21	 
				
		 	12.2	 	Certain Limitations	  	 	21	 
			
	 13.
	 	Compliance with Securities Law	  	 	22	 
			
	 14.
	 	Amendment or Termination of Plan	  	 	23	 

  
 ii 

 TABLE OF CONTENTS 

(continued) 
  

									
	 	 	 	 	 	  	Page	 
	 15.
	 	Miscellaneous Provisions	  	 	23	 
				
		 	15.1	 	Restrictions on Transfer of Shares	  	 	23	 
				
		 	15.2	 	Forfeiture Events	  	 	24	 
				
		 	15.3	 	Provision of Information	  	 	24	 
				
		 	15.4	 	Rights as Employee, Consultant or Director	  	 	24	 
				
		 	15.5	 	Rights as a Stockholder	  	 	24	 
				
		 	15.6	 	Delivery of Title to Shares	  	 	25	 
				
		 	15.7	 	Fractional Shares	  	 	25	 
				
		 	15.8	 	Retirement and Welfare Plans	  	 	25	 
				
		 	15.9	 	Severability	  	 	25	 
				
		 	15.10	 	No Constraint on Corporate Action	  	 	25	 
				
		 	15.11	 	Unfunded Obligation	  	 	25	 
				
		 	15.12	 	Choice of Law	  	 	26	 
				
		 	15.13	 	Stockholder Approval	  	 	26	 

  
 iii 

 ON24, INC. 

2014 STOCK PLAN 
 1.
ESTABLISHMENT, PURPOSE AND TERM OF PLAN. 

1.1 Establishment. The ON24, Inc. 2014 Stock Plan (the “Plan”) is hereby established effective as
of June 17, 2014 (the “Effective Date”). 
 1.2 Purpose. The purpose of the
Plan is to advance the interests of the Participating Company Group and its stockholders by providing an incentive to attract, retain and reward persons performing services for the Participating Company Group and by motivating such persons to
contribute to the growth and profitability of the Participating Company Group. The Plan seeks to achieve this purpose by providing for Awards in the form of Options, Restricted Stock Awards and Restricted Stock Unit Awards. 

1.3 Term of Plan. The Plan shall continue in effect until its termination by the Board; provided, however, that all Awards shall be
granted, if at all, within ten (10) years from the earlier of the date the Plan is adopted by the Board or the date the Plan is duly approved by the stockholders of the Company. 

2. DEFINITIONS AND CONSTRUCTION. 

2.1 Definitions. Whenever used herein, the following terms shall have their respective meanings set forth below: 

(a) “Award” means an Option, Restricted Stock Purchase Right, Restricted Stock Bonus or Restricted Stock Unit
Award granted under the Plan. 
 (b) “Award Agreement” means a written or electronic agreement between
the Company and a Participant setting forth the terms, conditions and restrictions applicable to an Award. 
 (c)
“Board” means the Board of Directors of the Company. 
 (d)
“Cause” means, unless such term or an equivalent term is otherwise defined by the applicable Award Agreement or other written agreement between a Participant and a Participating Company applicable to an Award,
any of the following: (i) the Participant’s theft, dishonesty, willful misconduct, breach of fiduciary duty for personal profit, or falsification of any Participating Company documents or records; (ii) the Participant’s material
failure to abide by a Participating Company’s code of conduct or other policies (including, without limitation, policies relating to confidentiality and reasonable workplace conduct); (iii) the Participant’s unauthorized use,
misappropriation, destruction or diversion of any tangible or intangible asset or corporate opportunity of a Participating Company (including, without limitation, the Participant’s improper use or disclosure of a Participating Company’s
confidential or proprietary information); (iv) any intentional act by the Participant which has a material detrimental effect on a Participating Company’s reputation or business; (v) the Participant’s repeated failure or
inability to perform any reasonable assigned duties after written notice from a 

  
 4 

 
Participating Company of, and a reasonable opportunity to cure, such failure or inability; (vi) any material breach by the Participant of any employment or service agreement between the
Participant and a Participating Company, which breach is not cured pursuant to the terms of such agreement; or (vii) the Participant’s conviction (including any plea of guilty or nolo contendere) of any criminal act involving fraud,
dishonesty, misappropriation or moral turpitude, or which impairs the Participant’s ability to perform his or her duties with a Participating Company. 

(e) “Change in Control” means, unless such term or an equivalent term is otherwise defined by the
applicable Award Agreement or other written agreement between the Participant and a Participating Company applicable to an Award, the occurrence of any one or a combination of the following: 

(i) an Ownership Change Event or a series of related Ownership Change Events (collectively, a
“Transaction”) in which the stockholders of the Company immediately before the Transaction do not retain immediately after the Transaction direct or indirect beneficial ownership of more than fifty percent (50%)
of the total combined voting power of the outstanding securities entitled to vote generally in the election of Directors or, in the case of an Ownership Change Event described in Section 2.1(v)(iii), the entity to which the assets of the
Company were transferred (the “Transferee”), as the case may be; or 
 (ii) a date specified by the
Board following approval by the stockholders of a plan of complete liquidation or dissolution of the Company; 
 provided, however, that a Change in Control
shall be deemed not to include a transaction described in subsection (i) of this Section 2.1(e) in which a majority of the members of the board of directors of the continuing, surviving or successor entity, or parent thereof, immediately
after such transaction is comprised of Incumbent Directors. 
 For purposes of the preceding sentence, indirect beneficial ownership shall include, without
limitation, an interest resulting from ownership of the voting securities of one or more corporations or other business entities which own the Company or the Transferee, as the case may be, either directly or through one or more subsidiary
corporations or other business entities. The Board shall determine whether multiple events described in subsections (i) and (ii) of this Section 2.1(e) are related and to be treated in the aggregate as a single Change in Control, and
its determination shall be final, binding and conclusive. 
 (f) “Code” means the Internal Revenue
Code of 1986, as amended, and any applicable regulations and administrative guidelines promulgated thereunder. 
 (g)
“Company” means ON24, Inc., a Delaware corporation, and any successor thereto. 
 (h)
“Consultant” means a person engaged to provide consulting or advisory services (other than as an Employee or a Director) to a Participating Company, provided that the identity of such person, the nature of such
services or the entity to which such services are provided would not preclude the Company from offering or selling securities to such person pursuant to the Plan in reliance on either the exemption from registration provided by Rule 701 under the
Securities Act or, if the Company is required to file reports pursuant to Section 13 or 15(d) of the Exchange Act, registration on a Form S-8 Registration Statement under the Securities Act. 

  
 5 

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

(j) “Disability” means the inability of the Participant, in the opinion of a qualified physician
acceptable to the Company, to perform the major duties of the Participant’s position with the Participating Company Group because of the sickness or injury of the Participant. 

(k) “Dividend Equivalent Right” means the right of a Participant, granted at the discretion of the Board
or as otherwise provided by the Plan, to receive a credit for the account of such Participant in an amount equal to the cash dividends paid on one share of Stock for each share of Stock represented by an Award held by such Participant. 

(l) “Employee” means any person treated as an employee (including an Officer or a Director who is also
treated as an employee) in the records of a Participating Company and, with respect to any Incentive Stock Option granted to such person, who is an employee for purposes of Section 422 of the Code; provided, however, that neither service as a
Director nor payment of a director’s fee shall be sufficient to constitute employment for purposes of the Plan. The Company shall determine in good faith and in the exercise of its discretion whether an individual has become or has ceased to be
an Employee and the effective date of such individual’s employment or termination of employment, as the case may be. For purposes of an individual’s rights, if any, under the terms of the Plan as of the time of the Company’s
determination of whether or not the individual is an Employee, all such determinations by the Company shall be final, binding and conclusive as to such rights, if any, notwithstanding that the Company or any court of law or governmental agency
subsequently makes a contrary determination as to such individual’s status as an Employee. 
 (m) “Exchange
Act” means the Securities Exchange Act of 1934, as amended. 
 (n) “Fair Market
Value” means, as of any date, the value of a share of Stock or other property as determined by the Board, in its discretion, or by the Company, in its discretion, if such determination is expressly allocated to the Company
herein, subject to the following: 
 (i) If, on such date, the Stock is listed or quoted on a national or regional securities exchange or
quotation system, the Fair Market Value of a share of Stock shall be the closing price of a share of Stock as quoted on the national or regional securities exchange or quotation system constituting the primary market for the Stock, as reported in
The Wall Street Journal or such other source as the Company deems reliable. If the relevant date does not fall on a day on which the Stock has traded on such securities exchange or quotation system, the date on which the Fair Market Value
shall be established shall be the last day on which the Stock was so traded or quoted prior to the relevant date, or such other appropriate day as shall be determined by the Board, in its discretion. 

  
 6 

 (ii) If, on such date, the Stock is not listed or quoted on a national or regional
securities exchange or quotation system, the Fair Market Value of a share of Stock shall be as determined by the Board in good faith without regard to any restriction other than a restriction which, by its terms, will never lapse, and in a manner
consistent with the requirements of Section 409A. 
 (o) “Incentive Stock Option” means an Option
intended to be (as set forth in the Award Agreement) and which qualifies as an incentive stock option within the meaning of Section 422(b) of the Code. 

(p) “Incumbent Director” means a director who either (i) is a member of the Board as of the
Effective Date or (ii) is 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 excluding a director who was elected or
nominated in connection with an actual or threatened proxy contest relating to the election of directors of the Company). 
 (q)
“Insider” means an Officer, a Director or other person whose transactions in Stock are subject to Section 16 of the Exchange Act. 

(r) “Nonstatutory Stock Option” means an Option not intended to be (as set forth in the Award Agreement)
or which does not qualify as an incentive stock option within the meaning of Section 422(b) of the Code. 
 (s)
“Officer” means any person designated by the Board as an officer of the Company. 
 (t)
“Option” means an Incentive Stock Option or a Nonstatutory Stock Option granted pursuant to the Plan. 

(u) “Ownership Change Event” means the occurrence of any of the following with respect to the Company:
(i) the direct or indirect sale or exchange in a single or series of related transactions by the stockholders of the Company of securities of the Company representing more than fifty percent (50%) of the total combined voting power of the
Company’s then outstanding securities entitled to vote generally in the election of Directors; (ii) a merger or consolidation in which the Company is a party; or (iii) the sale, exchange, or transfer of all or substantially all of the
assets of the Company (other than a sale, exchange or transfer to one or more subsidiaries of the Company). 
 (v) “Parent
Corporation” means any present or future “parent corporation” of the Company, as defined in Section 424(e) of the Code. 

(w) “Participant” means any eligible person who has been granted one or more Awards. 

(x) “Participating Company” means the Company or any Parent Corporation or Subsidiary Corporation. 

  
 7 

 (y) “Participating Company Group” means, at any point
in time, all entities collectively which are then Participating Companies. 
 (z) “Predecessor Plan”
means the Company’s 2000 Stock Option Plan, as amended. 
 (aa) “Restricted Stock Award” means an
Award in the form of a Restricted Stock Bonus or a Restricted Stock Purchase Right. 
 (bb) “Restricted Stock
Bonus” means Stock granted to a Participant pursuant to Section 7. 
 (cc) “Restricted Stock
Purchase Right” means a right to purchase Stock granted to a Participant pursuant to Section 7. 
 (dd)
“Restricted Stock Unit” means a right granted to a Participant pursuant to Section 8 to receive on a future date or event a share of Stock or cash in lieu thereof, as determined by the Board. 

(ee) “Rule 16b-3” means
Rule 16b-3 under the Exchange Act, as amended from time to time, or any successor rule or regulation. 

(ff) “Section 409A” means Section 409A of the Code. 

(gg) “Securities Act” means the Securities Act of 1933, as amended. 

(hh) “Service” means a Participant’s employment or service with the Participating Company Group,
whether as an Employee, a Director or a Consultant. Unless otherwise provided by the Board, a Participant’s Service shall not be deemed to have terminated merely because of a change in the capacity in which the Participant renders Service or a
change in the Participating Company for which the Participant renders Service, provided that there is no interruption or termination of the Participant’s Service. Furthermore, a Participant’s Service shall not be deemed to have been
interrupted or terminated if the Participant takes any military leave, sick leave, or other bona fide leave of absence approved by the Company. However, unless otherwise provided by the Board, if any such leave taken by a Participant exceeds ninety
(90) days, then on the ninety-first (91st) day following the commencement of such leave the Participant’s Service shall be deemed to have terminated, unless the Participant’s right to return to Service is guaranteed by statute or
contract. Notwithstanding the foregoing, unless otherwise designated by the Company or required by law, an unpaid leave of absence shall not be treated as Service for purposes of determining vesting under the Participant’s Award Agreement. A
Participant’s Service shall be deemed to have terminated either upon an actual termination of Service or upon the business entity for which the Participant performs Service ceasing to be a Participating Company. Subject to the foregoing, the
Company, in its discretion, shall determine whether the Participant’s Service has terminated and the effective date of and reason for such termination. 

(ii) “Stock” means the common stock of the Company, as adjusted from time to time in accordance with
Section 4.4. 

  
 8 

 (jj) “Subsidiary Corporation” means any present or
future “subsidiary corporation” of the Company, as defined in Section 424(f) of the Code. 
 (kk) “Ten
Percent Stockholder” means a person who, at the time an Award is granted to such person, owns stock possessing more than ten percent (10%) of the total combined voting power of all classes of stock of a Participating Company
within the meaning of Section 422(b)(6) of the Code. 
 (ll) “Trading Compliance Policy” means
the written policy of the Company pertaining to the purchase, sale, transfer or other disposition of the Company’s equity securities by Directors, Officers, Employees or other service providers who may possess material, nonpublic information
regarding the Company or its securities. 
 (mm) “Vesting Conditions” mean those conditions
established in accordance with the Plan prior to the satisfaction of which an Award or shares subject to an Award remain subject to forfeiture or a repurchase option in favor of the Company exercisable for the Participant’s monetary purchase
price, if any, for such shares upon the Participant’s termination of Service or failure of a performance condition to be satisfied. 

2.2 Construction. Captions and titles contained herein are for convenience only and shall not affect the meaning or interpretation of
any provision of the Plan. Except when otherwise indicated by the context, the singular shall include the plural and the plural shall include the singular. Use of the term “or” is not intended to be exclusive, unless the context clearly
requires otherwise. 
 3. ADMINISTRATION. 

3.1 Administration by the Board. The Plan shall be administered by the Board. All questions of interpretation of the Plan, of any Award
Agreement or of any other form of agreement or other document employed by the Company in the administration of the Plan or of any Award shall be determined by the Board, and such determinations shall be final, binding and conclusive upon all persons
having an interest in the Plan or such Award, unless fraudulent or made in bad faith. Any and all actions, decisions and determinations taken or made by the Board in the exercise of its discretion pursuant to the Plan or Award Agreement or other
agreement thereunder (other than determining questions of interpretation pursuant to the preceding sentence) shall be final, binding and conclusive upon all persons having an interest therein. All expenses incurred in connection with the
administration of the Plan shall be paid by the Company. 
 3.2 Authority of Officers. Any Officer shall have the authority to act on
behalf of the Company with respect to any matter, right, obligation, determination or election that is the responsibility of or that is allocated to the Company herein, provided that the Officer has apparent authority with respect to such matter,
right, obligation, determination or election. 

  
 9 

 3.3 Powers of the Board. In addition to any other powers set forth in
the Plan and subject to the provisions of the Plan, the Board shall have the full and final power and authority, in its discretion: 
 (a)
to determine the persons to whom, and the time or times at which, Awards shall be granted and the number of shares of Stock or units to be subject to each Award; 

(b) to determine the type of Award granted; 

(c) to determine the Fair Market Value of shares of Stock or other property; 

(d) to determine the terms, conditions and restrictions applicable to each Award (which need not be identical) and any shares acquired
pursuant thereto, including, without limitation, (i) the exercise or purchase price of shares pursuant to any Award, (ii) the method of payment for shares purchased pursuant to any Award, (iii) the method for satisfaction of any tax
withholding obligation arising in connection with any Award, including by the withholding or delivery of shares of Stock, (iv) the timing, terms and conditions of the exercisability or vesting of any Award or any shares acquired pursuant
thereto, (v) the time of expiration of any Award, (vi) the effect of any Participant’s termination of Service on any of the foregoing, and (vii) all other terms, conditions and restrictions applicable to any Award or shares
acquired pursuant thereto not inconsistent with the terms of the Plan; 
 (e) to determine whether an Award will be settled in shares of
Stock, cash, other property or in any combination thereof; 
 (f) to approve one or more forms of Award Agreement; 

(g) to amend, modify, extend, cancel or renew any Award or to waive any restrictions or conditions applicable to any Award or any shares
acquired pursuant thereto; 
 (h) to reprice or otherwise adjust the exercise price of any Option, or to grant in substitution for any
Option a new Award covering the same or different number of shares of Stock; 
 (i) to accelerate, continue, extend or defer the
exercisability or vesting of any Award or any shares acquired pursuant thereto, including with respect to the period following a Participant’s termination of Service; 

(j) to prescribe, amend or rescind rules, guidelines and policies relating to the Plan, or to adopt
sub-plans or supplements to, or alternative versions of, the Plan, including, without limitation, as the Board deems necessary or desirable to comply with the laws of, or to accommodate the tax policy,
accounting principles or custom of, foreign jurisdictions whose residents may be granted Awards; and 
 (k) to correct any defect, supply
any omission or reconcile any inconsistency in the Plan or any Award Agreement and to make all other determinations and take such other actions with respect to the Plan or any Award as the Board may deem advisable to the extent not inconsistent with
the provisions of the Plan or applicable law. 
 3.4 Administration with Respect to Insiders. With respect to participation by
Insiders in the Plan, at any time that any class of equity security of the Company is registered pursuant to Section 12 of the Exchange Act, the Plan shall be administered in compliance with the requirements, if any, of Rule 16b-3. 

  
 10 

 3.5 Indemnification. In addition to such other rights of indemnification as they may
have as members of the Board or as officers or employees of the Participating Company Group, to the extent permitted by applicable law, members of the Board and any officers or employees of the Participating Company Group to whom authority to act
for the Board or the Company is delegated shall be indemnified by the Company against all reasonable expenses, including attorneys’ fees, actually and necessarily incurred in connection with the defense of any action, suit or proceeding, or in
connection with any appeal therein, to which they or any of them may be a party by reason of any action taken or failure to act under or in connection with the Plan, or any right granted hereunder, and against all amounts paid by them in settlement
thereof (provided such settlement is approved by independent legal counsel selected by the Company) or paid by them in satisfaction of a judgment in any such action, suit or proceeding, except in relation to matters as to which it shall be adjudged
in such action, suit or proceeding that such person is liable for gross negligence, bad faith or intentional misconduct in duties; provided, however, that within sixty (60) days after the institution of such action, suit or proceeding, such
person shall offer to the Company, in writing, the opportunity at its own expense to handle and defend the same. 
 4.
SHARES SUBJECT TO PLAN. 
 4.1 Maximum Number of Shares
Issuable. Subject to adjustment as provided in Sections 4.2, 4.3 and 4.4, the maximum aggregate number of shares of Stock that may be issued under the Plan shall be Seven Hundred Thirteen Thousand Eight Hundred Thirty-Seven (713,837) and
shall consist of authorized but unissued or reacquired shares of Stock or any combination thereof. Notwithstanding the foregoing, at any such time as the offer and sale of securities pursuant to the Plan is subject to compliance with
Section 260.140.45 of Title 10 of the California Code of Regulations (“Section 260.140.45”), the total number of shares of Stock issuable upon the exercise of all outstanding Awards (together
with options outstanding under any other stock plan of the Company) and the total number of shares provided for under any stock bonus or similar plan of the Company shall not exceed thirty percent (30%) (or such other higher percentage limitation as
may be approved by the stockholders of the Company pursuant to Section 260.140.45) of the then outstanding shares of the Company as calculated in accordance with the conditions and exclusions of Section 260.140.45. 

4.2 Adjustment for Unissued or Forfeited Predecessor Plan Shares. The maximum aggregate number of shares of Stock that may be
issued under the Plan as set forth in Section 4.1 shall be cumulatively increased from time to time by: 
 (a) the number of shares of
Stock subject to that portion of any option outstanding pursuant to the Predecessor Plan as of the Effective Date which, on or after the Effective Date, expires or is terminated or canceled for any reason without having been exercised or settled in
full; and 

  
 11 

 (b) the number of shares of Stock acquired pursuant to the Predecessor Plan subject to
forfeiture or repurchase by the Company for an amount not greater than the Participant’s purchase price which, on or after the Effective Date, is so forfeited or repurchased; 

provided, however, that the aggregate number of shares of Stock authorized for issuance under the Predecessor Plan that may become authorized for issuance
under the Plan pursuant to this Section 4.2 shall not exceed 5,643,704 shares. 
 4.3 Share Counting. If an outstanding Award for
any reason expires or is terminated or canceled without having been exercised or settled in full, or if shares of Stock acquired pursuant to an Award subject to forfeiture or repurchase are forfeited or repurchased by the Company for an amount not
greater than the Participant’s exercise or purchase price, the shares of Stock allocable to the terminated portion of such Award or such forfeited or repurchased shares of Stock shall again be available for issuance under the Plan. Shares of
Stock shall not be deemed to have been issued pursuant to the Plan (a) with respect to any portion of an Award that is settled in cash or (b) to the extent such shares are withheld or reacquired by the Company in satisfaction of tax
withholding obligations pursuant to Section 11.2. If the exercise price of an Option is paid by tender to the Company, or attestation to the ownership, of shares of Stock owned by the Participant, or by means of a Net Exercise, the number of
shares available for issuance under the Plan shall be reduced by the net number of shares issued upon the exercise of the Option. 
 4.4
Adjustments for Changes in Capital Structure. Subject to any required action by the stockholders of the Company and the requirements of Sections 409A and 424 of the Code to the extent applicable, in the event of any change in
the Stock effected without receipt of consideration by the Company, whether through merger, consolidation, reorganization, reincorporation, recapitalization, reclassification, stock dividend, stock split, reverse stock split, split-up, split-off, spin-off, combination of shares, exchange of shares, or similar change in the capital structure of the Company, or
in the event of payment of a dividend or distribution to the stockholders of the Company in a form other than Stock (excepting regular, periodic cash dividends) that has a material effect on the Fair Market Value of shares of Stock, appropriate and
proportionate adjustments shall be made in the number and kind of shares subject to the Plan and to any outstanding Awards, in the ISO Share Limit set forth in Section 5.3(a), and in the exercise or purchase price per share under any
outstanding Awards in order to prevent dilution or enlargement of Participants’ rights under the Plan. For purposes of the foregoing, conversion of any convertible securities of the Company shall not be treated as “effected without receipt
of consideration by the Company.” If a majority of the shares which are of the same class as the shares that are subject to outstanding Awards are exchanged for, converted into, or otherwise become (whether or not pursuant to an Ownership
Change Event) shares of another corporation (the “New Shares”), the Board may unilaterally amend the outstanding Awards to provide that such Awards are for New Shares. In the event of any such amendment, the
number of shares subject to, and the exercise or purchase price per share of, the outstanding Awards shall be adjusted in a fair and equitable manner as determined by the Board, in its discretion. Any fractional share resulting from an adjustment
pursuant to this Section shall be rounded down to the nearest whole number, and the exercise or purchase price per share shall be rounded up to the nearest whole cent. In no event may the exercise or purchase price, if any, under any Award be
decreased to an amount less than the par value, if any, of the stock subject to the Award. Such adjustments shall be determined by the Board, and its determination shall be final, binding and conclusive. 

  
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 4.5 Assumption or Substitution of Awards. The Board may, without affecting the number
of shares of Stock available pursuant to Section 4.1, authorize the issuance or assumption of benefits under this Plan in connection with any merger, consolidation, acquisition of property or stock, or reorganization upon such terms and
conditions as it may deem appropriate, subject to compliance with Section 409A and any other applicable provisions of the Code. 
 5.
ELIGIBILITY, PARTICIPATION AND OPTION LIMITATIONS. 

5.1 Persons Eligible for Awards. Awards may be granted only to Employees, Consultants and Directors. 

5.2 Participation in the Plan. Awards are granted solely at the discretion of the Board. Eligible persons may be granted more than one
Award. However, eligibility in accordance with this Section shall not entitle any person to be granted an Award, or, having been granted an Award, to be granted an additional Award. 

5.3 Incentive Stock Option Limitations. 

(a) Maximum Number of Shares Issuable Pursuant to Incentive Stock Options. Subject to Section 4.1 and adjustment as
provided in Sections 4.2 and 4.4, the maximum aggregate number of shares of Stock that may be issued under the Plan pursuant to the exercise of Incentive Stock Options shall not exceed Six Million Three Hundred Fifty Seven Thousand Five Hundred
Forty One (6,357,541) shares (the “ISO Share Limit”). The maximum aggregate number of shares of Stock that may be issued under the Plan pursuant to all Awards other than Incentive Stock Options shall be
the number of shares determined in accordance with Section 4.1, subject to adjustment as provided in Sections 4.2 and 4.4. 
 (b)
Persons Eligible. An Incentive Stock Option may be granted only to a person who, on the effective date of grant, is an Employee. Any person who is not an Employee on the effective date of the grant of an Option to such person may be
granted only a Nonstatutory Stock Option. 
 (c) Fair Market Value Limitation. To the extent that options designated as
Incentive Stock Options (granted under all stock plans of the Participating Company Group, including the Plan) become exercisable by a Participant for the first time during any calendar year for stock having a Fair Market Value greater than One
Hundred Thousand Dollars ($100,000), the portion of such options which exceeds such amount shall be treated as Nonstatutory Stock Options. For purposes of this Section, options designated as Incentive Stock Options shall be taken into account in the
order in which they were granted, and the Fair Market Value of stock shall be determined as of the time the option with respect to such stock is granted. If the Code is amended to provide for a limitation different from that set forth in this
Section, such different limitation shall be deemed incorporated herein effective as of the date and with respect to such Options as required or permitted by such amendment to the Code. If an Option is treated as an Incentive Stock Option in part and
as a Nonstatutory Stock Option in 

  
 13 

 
part by reason of the limitation set forth in this Section, the Participant may designate which portion of such Option the Participant is exercising. In the absence of such designation, the
Participant shall be deemed to have exercised the Incentive Stock Option portion of the Option first. Upon exercise of the Option, shares issued pursuant to each such portion shall be separately identified. 

6. STOCK OPTIONS. 

Options shall be evidenced by Award Agreements specifying the number of shares of Stock covered thereby, in such form as the Board shall
establish. Such Award Agreements may incorporate all or any of the terms of the Plan by reference and shall comply with and be subject to the following terms and conditions: 

6.1 Exercise Price. The exercise price for each Option shall be established in the discretion of the Board; provided,
however, that (a) the exercise price per share for an Option shall be not less than the Fair Market Value of a share of Stock on the effective date of grant of the Option and (b) no Incentive Stock Option granted to a Ten Percent
Stockholder shall have an exercise price per share less than one hundred ten percent (110%) of the Fair Market Value of a share of Stock on the effective date of grant of the Option. Notwithstanding the foregoing, an Option (whether an Incentive
Stock Option or a Nonstatutory Stock Option) may be granted with an exercise price less than the minimum exercise price set forth above if such Option is granted pursuant to an assumption or substitution for another option in a manner that would
qualify under the provisions of Section 409A or Section 424(a) of the Code, as applicable. 
 6.2 Exercisability and Term of
Options. Options shall be exercisable at such time or times, or upon such event or events, and subject to such terms, conditions, performance criteria and restrictions as shall be determined by the Board and set forth in the Award
Agreement evidencing such Option; provided, however, that (a) no Option shall be exercisable after the expiration of ten (10) years after the effective date of grant of such Option, (b) no Incentive Stock Option granted to a Ten
Percent Stockholder shall be exercisable after the expiration of five (5) years after the effective date of grant of such Option, and (c) no Option granted to an Employee who is a non-exempt employee
for purposes of the Fair Labor Standards Act of 1938, as amended, shall be first exercisable until at least six (6) months following the date of grant of such Option (except in the event of such Employee’s death, disability or retirement,
upon a Change in Control, or as otherwise permitted by the Worker Economic Opportunity Act). Subject to the foregoing, unless otherwise specified by the Board in the grant of an Option, each Option shall terminate ten (10) years after the
effective date of grant of the Option, unless earlier terminated in accordance with its provisions. 
 6.3 Payment of Exercise Price.

 (a) Forms of Consideration Authorized. Except as otherwise provided below, payment of the exercise price for the number of
shares of Stock being purchased pursuant to any Option shall be made (i) in cash, by check or in cash equivalent, (ii) if permitted by the Company and subject to the limitations contained in Section 6.3(b), by means of (1) a
Stock Tender Exercise, (2) a Cashless Exercise or (3) a Net Exercise; (iii) by such other consideration as may be approved by the Board from time to time to the extent permitted by applicable law, or (iv) by any combination
thereof. The Board may at any time or from time to time grant Options which do not permit all of the foregoing forms of consideration to be used in payment of the exercise price or which otherwise restrict one or more forms of consideration. 

  
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 (b) Limitations on Forms of Consideration. 

(i) Stock Tender Exercise. A “Stock Tender Exercise” means the delivery of a properly executed
exercise notice accompanied by a Participant’s tender to the Company, or attestation to the ownership, in a form acceptable to the Company of whole shares of Stock owned by the Participant having a Fair Market Value that does not exceed the
aggregate exercise price for the shares with respect to which the Option is exercised. A Stock Tender Exercise shall not be permitted if it would constitute a violation of the provisions of any law, regulation or agreement restricting the redemption
of the Company’s stock. If required by the Company, an Option may not be exercised by tender to the Company, or attestation to the ownership, of shares of Stock unless such shares either have been owned by the Participant for a period of time
required by the Company (and not used for another option exercise by attestation during such period) or were not acquired, directly or indirectly, from the Company. 

(ii) Cashless Exercise. A Cashless Exercise shall be permitted only upon the class of shares subject to the Option becoming publicly
traded in an established securities market. A “Cashless Exercise” means the delivery of a properly executed exercise notice together with irrevocable instructions to a broker providing for the assignment to the
Company of the proceeds of a sale or loan with respect to some or all of the shares being acquired upon the exercise of the Option (including, without limitation, through an exercise complying with the provisions of Regulation T as promulgated
from time to time by the Board of Governors of the Federal Reserve System). The Company reserves, at any and all times, the right, in the Company’s sole and absolute discretion, to establish, decline to approve or terminate any program or
procedures for the exercise of Options by means of a Cashless Exercise, including with respect to one or more Participants specified by the Company notwithstanding that such program or procedures may be available to other Participants. 

(iii) Net Exercise. A “Net Exercise” means the delivery of a properly executed exercise notice
followed by a procedure pursuant to which (1) the Company will reduce the number of shares otherwise issuable to a Participant upon the exercise of an Option by the largest whole number of shares having a Fair Market Value that does not exceed
the aggregate exercise price for the shares with respect to which the Option is exercised, and (2) the Participant shall pay to the Company in cash the remaining balance of such aggregate exercise price not satisfied by such reduction in the
number of whole shares to be issued. 
 6.4 Effect of Termination of Service. 

(a) Option Exercisability. Subject to earlier termination of the Option as otherwise provided by this Plan and unless a
longer exercise period is provided by the Board, an Option shall terminate immediately upon the Participant’s termination of Service to the extent that it is then unvested and shall be exercisable after the Participant’s termination of
Service to the extent it is then vested only during the applicable time period determined in accordance with this Section and thereafter shall terminate: 

  
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 (i) Disability. If the Participant’s Service terminates because of the
Disability of the Participant, the Option, to the extent unexercised and exercisable for vested shares on the date on which the Participant’s Service terminated, may be exercised by the Participant (or the Participant’s guardian or legal
representative) at any time prior to the expiration of twelve (12) months (or such longer or shorter period (but not less than six (6) months) provided by the Award Agreement) after the date on which the Participant’s Service
terminated, but in any event no later than the date of expiration of the Option’s term as set forth in the Award Agreement evidencing such Option (the “Option Expiration Date”). 

(ii) Death. If the Participant’s Service terminates because of the death of the Participant, the Option, to the extent unexercised
and exercisable for vested shares on the date on which the Participant’s Service terminated, may be exercised by the Participant’s legal representative or other person who acquired the right to exercise the Option by reason of the
Participant’s death at any time prior to the expiration of twelve (12) months (or such longer or shorter period (but not less than six (6) months) provided by the Award Agreement) after the date on which the Participant’s Service
terminated, but in any event no later than the Option Expiration Date. The Participant’s Service shall be deemed to have terminated on account of death if the Participant dies within thirty (30) days (or such longer period provided by the
Board) after the Participant’s termination of Service. 
 (iii) Termination for Cause. Notwithstanding any other provision of
the Plan to the contrary, if the Participant’s Service is terminated for Cause, the Option shall terminate in its entirety and cease to be exercisable immediately upon such termination of Service. 

(iv) Other Termination of Service. If the Participant’s Service terminates for any reason, except Disability, death or Cause, the
Option, to the extent unexercised and exercisable for vested shares on the date on which the Participant’s Service terminated, may be exercised by the Participant at any time prior to the expiration of three (3) months (or such longer or
shorter period (but not less than thirty (30) days) provided by the Award Agreement) after the date on which the Participant’s Service terminated, but in any event no later than the Option Expiration Date. 

(b) Extension if Exercise Prevented by Law. Notwithstanding the foregoing other than termination of Service for Cause, if
the exercise of an Option within the applicable time periods set forth in Section 6.4(a) is prevented by the provisions of Section 12 below, the Option shall remain exercisable until the later of (i) thirty (30) days after the
date such exercise first would no longer be prevented by such provisions or (ii) the end of the applicable time period under Section 6.4(a), but in any event no later than the Option Expiration Date. 

6.5 Transferability of Options. During the lifetime of the Participant, an Option shall be exercisable only by the Participant or the
Participant’s guardian or legal representative. An Option shall not be subject in any manner to anticipation, alienation, sale, exchange, transfer, assignment, pledge, encumbrance, or garnishment by creditors of the Participant or the
Participant’s beneficiary, except transfer by will or by the laws of descent and distribution; provided, however, that to the extent permitted by the Board, in its discretion, and set forth in the Award Agreement evidencing such Option, an
Option shall be assignable or 

  
 16 

 
transferable subject to the applicable limitations, if any, described in Rule 701 under the Securities Act and the General Instructions to Form S-8
Registration Statement under the Securities Act or, in the case of an Incentive Stock Option, only as permitted by applicable regulations under Section 421 of the Code in a manner that does not disqualify such Option as an Incentive Stock
Option. Notwithstanding the foregoing, for so long as the Company is relying on the exemption provided by Rule 12h-1(f) under the Exchange Act, no Option or, prior to its exercise, the shares to be issued upon
the exercise of the Option, shall be transferred except in compliance with the restrictions on transfer under Rule 12h-1(f) (including the requirement under such rule that any permitted transferee may not
further transfer the Option) or be made subject to any short position, “put equivalent position” or “call equivalent position” by the Participant, as such terms are defined in Rule 16a-1 of
the Exchange Act. 
 7. RESTRICTED STOCK AWARDS. 

Restricted Stock Awards shall be evidenced by Award Agreements specifying whether the Award is a Restricted Stock Bonus or a Restricted Stock
Purchase Right and the number of shares of Stock subject to the Award, in such form as the Board shall establish. Such Award Agreements may incorporate all or any of the terms of the Plan by reference and shall comply with and be subject to the
following terms and conditions: 
 7.1 Types of Restricted Stock Awards Authorized. Restricted Stock Awards may be
granted in the form of either a Restricted Stock Bonus or a Restricted Stock Purchase Right. Restricted Stock Awards may be granted upon such conditions as the Board shall determine, including, without limitation, upon the attainment of one or more
performance goals. 
 7.2 Purchase Price. The purchase price for shares of Stock issuable under each Restricted Stock Purchase
Right shall be established by the Board in its discretion. No monetary payment (other than applicable tax withholding) shall be required as a condition of receiving shares of Stock pursuant to a Restricted Stock Bonus, the consideration for which
shall be services actually rendered to a Participating Company or for its benefit. Notwithstanding the foregoing, if required by applicable state corporate law, the Participant shall furnish consideration in the form of cash or past services
rendered to a Participating Company or for its benefit having a value not less than the par value of the shares of Stock subject to a Restricted Stock Award. 

7.3 Purchase Period. A Restricted Stock Purchase Right shall be exercisable within a period established by the Board, which shall
in no event exceed thirty (30) days from the effective date of the grant of the Restricted Stock Purchase Right. 
 7.4 Payment of
Purchase Price. Except as otherwise provided below, payment of the purchase price for the number of shares of Stock being purchased pursuant to any Restricted Stock Purchase Right shall be made (a) in cash, by check or in cash equivalent,
(b) by such other consideration as may be approved by the Board from time to time to the extent permitted by applicable law, or (c) by any combination thereof. 

  
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 7.5 Vesting and Restrictions on Transfer. Shares issued pursuant to any
Restricted Stock Award may (but need not) be made subject to Vesting Conditions based upon the satisfaction of such Service requirements, conditions, restrictions or performance criteria, as shall be established by the Board and set forth in the
Award Agreement evidencing such Award. During any period in which shares acquired pursuant to a Restricted Stock Award remain subject to Vesting Conditions, such shares may not be sold, exchanged, transferred, pledged, assigned or otherwise disposed
of other than pursuant to an Ownership Change Event or as provided in Section 7.8. The Board, in its discretion, may provide in any Award Agreement evidencing a Restricted Stock Award that, if the satisfaction of Vesting Conditions with respect
to any shares subject to such Restricted Stock Award would otherwise occur on a day on which the sale of such shares would violate the provisions of the Trading Compliance Policy, then satisfaction of the Vesting Conditions automatically shall be
determined on the next trading day on which the sale of such shares would not violate the Trading Compliance Policy. Upon request by the Company, each Participant shall execute any agreement evidencing such transfer restrictions prior to the receipt
of shares of Stock hereunder and shall promptly present to the Company any and all certificates representing shares of Stock acquired hereunder for the placement on such certificates of appropriate legends evidencing any such transfer restrictions.

 7.6 Voting Rights; Dividends and Distributions. Except as provided in this Section, Section 7.5 and any Award Agreement,
during any period in which shares acquired pursuant to a Restricted Stock Award remain subject to Vesting Conditions, the Participant shall have all of the rights of a stockholder of the Company holding shares of Stock, including the right to vote
such shares and to receive all dividends and other distributions paid with respect to such shares; provided, however, that if so determined by the Board and provided by the Award Agreement, such dividends and distributions shall be subject to the
same Vesting Conditions as the shares subject to the Restricted Stock Award with respect to which such dividends or distributions were paid, and otherwise shall be paid no later than the end of the calendar year in which such dividends or
distributions are paid to stockholders (or, if later, the 15th day of the third month following the date such dividends or distributions are paid to stockholders). In the event of a dividend or distribution paid in shares of Stock or other property
or any other adjustment made upon a change in the capital structure of the Company as described in Section 4.4, any and all new, substituted or additional securities or other property (other than regular, periodic cash dividends) to which the
Participant is entitled by reason of the Participant’s Restricted Stock Award shall be immediately subject to the same Vesting Conditions as the shares subject to the Restricted Stock Award with respect to which such dividends or distributions
were paid or adjustments were made. 
 7.7 Effect of Termination of Service. Unless otherwise provided by the Board in the
Award Agreement evidencing a Restricted Stock Award, if a Participant’s Service terminates for any reason, whether voluntary or involuntary (including the Participant’s death or disability), then (a) the Company shall have the option
to repurchase for the purchase price paid by the Participant any shares acquired by the Participant pursuant to a Restricted Stock Purchase Right which remain subject to Vesting Conditions as of the date of the Participant’s termination of
Service and (b) the Participant shall forfeit to the Company any shares acquired by the Participant pursuant to a Restricted Stock Bonus which remain subject to Vesting Conditions as of the date of the Participant’s termination of Service.
The Company shall have the right to assign at any time any repurchase right it may have, whether or not such right is then exercisable, to one or more persons as may be selected by the Company. 

  
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 7.8 Nontransferability of Restricted Stock Award Rights. Rights
to acquire shares of Stock pursuant to a Restricted Stock Award shall not be subject in any manner to anticipation, alienation, sale, exchange, transfer, assignment, pledge, encumbrance or garnishment by creditors of the Participant or the
Participant’s beneficiary, except transfer by will or the laws of descent and distribution. All rights with respect to a Restricted Stock Award granted to a Participant hereunder shall be exercisable during his or her lifetime only by such
Participant or the Participant’s guardian or legal representative. 
 8. RESTRICTED STOCK
UNITS. 
 Restricted Stock Unit Awards shall be evidenced by Award Agreements specifying the number of Restricted
Stock Units subject to the Award, in such form as the Board shall establish. Award Agreements evidencing Restricted Stock Units may incorporate all or any of the terms of the Plan by reference and shall comply with and be subject to the following
terms and conditions: 
 8.1 Grant of Restricted Stock Unit Awards. Restricted Stock Unit Awards may be granted upon such conditions
as the Board shall determine, including, without limitation, upon the attainment of one or more performance goals established by the Board. 

8.2 Purchase Price. No monetary payment (other than applicable tax withholding, if any) shall be required as a condition of receiving a
Restricted Stock Unit Award, the consideration for which shall be services actually rendered to a Participating Company or for its benefit. Notwithstanding the foregoing, if required by applicable state corporate law, the Participant shall furnish
consideration in the form of cash or past services rendered to a Participating Company or for its benefit having a value not less than the par value of the shares of Stock issued upon settlement of the Restricted Stock Unit Award. 

8.3 Vesting. Restricted Stock Unit Awards may (but need not) be made subject to Vesting Conditions based upon the satisfaction of such
Service requirements, conditions, restrictions or performance criteria as shall be established by the Board and set forth in the Award Agreement evidencing such Award. The Board, in its discretion, may provide in any Award Agreement evidencing a
Restricted Stock Unit Award that, if the satisfaction of Vesting Conditions with respect to any shares subject to the Award would otherwise occur on a day on which the sale of such shares would violate the provisions of the Trading Compliance
Policy, then the satisfaction of the Vesting Conditions automatically shall be determined on the first to occur of (a) the next trading day on which the sale of such shares would not violate the Trading Compliance Policy or (b) the last
day of the calendar year in which the original vesting date occurred. 
 8.4 Voting Rights, Dividend Equivalent Rights and
Distributions. Participants shall have no voting rights with respect to shares of Stock represented by Restricted Stock Units until the date of the issuance of such shares (as evidenced by the appropriate entry on the books of the Company or of
a duly authorized transfer agent of the Company). However, 

  
 19 

 
the Board, in its discretion, may provide in the Award Agreement evidencing any Restricted Stock Unit Award that the Participant shall be entitled to Dividend Equivalent Rights with respect to
the payment of cash dividends on Stock during the period beginning on the date such Award is granted and ending, with respect to each share subject to the Award, on the earlier of the date the Award is settled or the date on which it is terminated.
Dividend Equivalent Rights, if any, shall be paid by crediting the Participant with a cash amount or with additional whole Restricted Stock Units as of the date of payment of such cash dividends on Stock, as determined by the Board. The number of
additional Restricted Stock Units (rounded to the nearest whole number), if any, to be credited shall be determined by dividing (a) the amount of cash dividends paid on the dividend payment date with respect to the number of shares of Stock
represented by the Restricted Stock Units previously credited to the Participant by (b) the Fair Market Value per share of Stock on such date. Such cash amount or additional Restricted Stock Units shall be subject to the same terms and
conditions and shall be settled in the same manner and at the same time as the Restricted Stock Units originally subject to the Restricted Stock Unit Award. In the event of a dividend or distribution paid in shares of Stock or other property or any
other adjustment made upon a change in the capital structure of the Company as described in Section 4.4, appropriate adjustments shall be made in the Participant’s Restricted Stock Unit Award so that it represents the right to receive upon
settlement any and all new, substituted or additional securities or other property (other than regular, periodic cash dividends) to which the Participant would be entitled by reason of the shares of Stock issuable upon settlement of the Award, and
all such new, substituted or additional securities or other property shall be immediately subject to the same Vesting Conditions as are applicable to the Award. 

8.5 Effect of Termination of Service. Unless otherwise provided by the Board and set forth in the Award Agreement evidencing a
Restricted Stock Unit Award, if a Participant’s Service terminates for any reason, whether voluntary or involuntary (including the Participant’s death or disability), then the Participant shall forfeit to the Company any Restricted Stock
Units pursuant to the Award which remain subject to Vesting Conditions as of the date of the Participant’s termination of Service. 

8.6 Settlement of Restricted Stock Unit Awards. The Company shall issue to a Participant on the date on which Restricted Stock Units
subject to the Participant’s Restricted Stock Unit Award vest or on such other date determined by the Board in compliance with Section 409A, if applicable, and set forth in the Award Agreement one (1) share of Stock (and/or any other
new, substituted or additional securities or other property pursuant to an adjustment described in Section 8.4) for each Restricted Stock Unit then becoming vested or otherwise to be settled on such date, subject to the withholding of
applicable taxes, if any. If permitted by the Board, the Participant may elect, consistent with the requirements of Section 409A, to defer receipt of all or any portion of the shares of Stock or other property otherwise issuable to the
Participant pursuant to this Section, and such deferred issuance date(s) and amount(s) elected by the Participant shall be set forth in the Award Agreement. Notwithstanding the foregoing, the Board, in its discretion, may provide for settlement of
any Restricted Stock Unit Award by payment to the Participant in cash of an amount equal to the Fair Market Value on the payment date of the shares of Stock or other property otherwise issuable to the Participant pursuant to this Section. 

  
 20 

 8.7 Nontransferability of Restricted Stock Unit Awards. The right to receive shares
pursuant to a Restricted Stock Unit Award shall not be subject in any manner to anticipation, alienation, sale, exchange, transfer, assignment, pledge, encumbrance, or garnishment by creditors of the Participant or the Participant’s
beneficiary, except transfer by will or by the laws of descent and distribution. For so long as the Company is relying on an order of the Securities and Exchange Commission (the “SEC”) under Section 12(h)
of the Exchange Act or a no-action position of the Staff of the SEC relieving the Company from registration under Section 12(g) of the Exchange Act of the Units and the shares of Stock subject thereto, no
Restricted Stock Unit Award, or prior to its settlement, shares of Stock underlying such Award, shall be transferred except in compliance with the restrictions on transfer under Rule 12h-1(f) under the
Exchange Act that would apply were the Restricted Stock Units subject to such rule (including the requirement under such rule that any permitted transferee may not further transfer the securities) or be made subject to any short position, “put
equivalent position” or “call equivalent position” by the Participant, as such terms are defined in Rule 16a-1 under the Exchange Act. All rights with respect to a Restricted Stock Unit Award
granted to a Participant hereunder shall be exercisable during his or her lifetime only by such Participant or the Participant’s guardian or legal representative. 

9. STANDARD FORMS OF AWARD AGREEMENTS. 

9.1 Award Agreements. Each Award shall comply with and be subject to the terms and conditions set forth in the appropriate
form of Award Agreement approved by the Board and as amended from time to time. No Award or purported Award shall be a valid and binding obligation of the Company unless evidenced by a fully executed Award Agreement, which execution may be evidenced
by electronic means. 
 9.2 Authority to Vary Terms. The Board shall have the authority from time to time to vary the
terms of any standard form of Award Agreement either in connection with the grant or amendment of an individual Award or in connection with the authorization of a new standard form or forms; provided, however, that the terms and conditions of any
such new, revised or amended standard form or forms of Award Agreement are not inconsistent with the terms of the Plan. 
 10.
CHANGE IN CONTROL. 
 10.1 Effect of Change in Control on
Awards. Subject to the requirements and limitations of Section 409A, if applicable, the Board may provide for any one or more of the following: 

(a) Accelerated Vesting. In its discretion, the Board may provide in the grant of any Award or at any other time may take action
it deems appropriate to provide for acceleration of the exercisability, vesting and/or settlement in connection with a Change in Control of each or any outstanding Award or portion thereof and shares acquired pursuant thereto upon such conditions,
including termination of the Participant’s Service prior to, upon, or following the Change in Control, and to such extent as the Board determines. 

  
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 (b) Assumption, Continuation or Substitution of Awards. In the event of a
Change in Control, the surviving, continuing, successor, or purchasing corporation or other business entity or parent thereof, as the case may be (the “Acquiror”), may, without the consent of any Participant,
assume or continue the Company’s rights and obligations under each or any Award or portion thereof outstanding immediately prior to the Change in Control or substitute for each or any such outstanding Award or portion thereof a substantially
equivalent award with respect to the Acquiror’s stock. For purposes of this Section, if so determined by the Board, in its discretion, an Award or any portion thereof shall be deemed assumed if, following the Change in Control, the Award
confers the right to receive, subject to the terms and conditions of the Plan and the applicable Award Agreement, for each share of Stock subject to such portion of the Award immediately prior to the Change in Control, the consideration (whether
stock, cash, other securities or property or a combination thereof) to which a holder of a share of Stock on the effective date of the Change in Control was entitled (and if holders were offered a choice of consideration, the type of consideration
chosen by the holders of a majority of the outstanding shares of Stock); provided, however, that if such consideration is not solely common stock of the Acquiror, the Board may, with the consent of the Acquiror, provide for the consideration to be
received upon the exercise or settlement of the Award, for each share of Stock subject to the Award, solely common stock of the Acquiror equal in Fair Market Value to the per share consideration received by holders of Stock pursuant to the Change in
Control. If any portion of such consideration may be received by holders of Stock pursuant to the Change in Control on a contingent or delayed basis, the Board may, in its discretion, determine such Fair Market Value per share as of the time of the
Change in Control on the basis of the Board’s good faith estimate of the present value of the probable future payment of such consideration. Any Award or portion thereof which is neither assumed or continued by the Acquiror in connection with
the Change in Control nor exercised as of the time of consummation of the Change in Control shall terminate and cease to be outstanding effective as of the time of consummation of the Change in Control. Notwithstanding the foregoing, shares acquired
upon exercise of an Award prior to the Change in Control and any consideration received pursuant to the Change in Control with respect to such shares shall continue to be subject to all applicable provisions of the Award Agreement evidencing such
Award except as otherwise provided in such Award Agreement. 
 (c) Cash-Out of Outstanding
Awards. The Board may, in its discretion and without the consent of any Participant, determine that, upon the occurrence of a Change in Control, each or any Award or portion thereof outstanding immediately prior to the Change in Control and
not previously exercised or settled shall be canceled in exchange for a payment with respect to each vested share (and each unvested share, if so determined by the Board) of Stock subject to such canceled Award in (i) cash, (ii) stock of the
Company or of a corporation or other business entity a party to the Change in Control, or (iii) other property which, in any such case, shall be in an amount having a Fair Market Value equal to the Fair Market Value of the consideration to be
paid per share of Stock in the Change in Control, reduced (but not below zero) by the exercise or purchase price per share, if any, under such Award. If any portion of such consideration may be received by holders of Stock pursuant to the Change in
Control on a contingent or delayed basis, the Board may, in its sole discretion, determine such Fair Market Value per share as of the time of the Change in Control on the basis of the Board’s good faith estimate of the present value of the
probable amount of future payment of such consideration. In the event such determination is made by the Board, an Award having an exercise or purchase price per share equal to or greater than the Fair Market Value of the

  
 22 

 
consideration to be paid per share of Stock in the Change in Control may be canceled without payment of consideration to the holder thereof. Payment pursuant to this Section (reduced by
applicable withholding taxes, if any) shall be made to Participants in respect of the vested portions of their canceled Awards as soon as practicable following the date of the Change in Control and in respect of the unvested portions of their
canceled Awards in accordance with the vesting schedules applicable to such Awards. 
 10.2 Federal Excise Tax Under
Section 4999 of the Code. 
 (a) Excess Parachute Payment. If any acceleration of vesting pursuant to
an Award and any other payment or benefit received or to be received by a Participant would subject the Participant to any excise tax pursuant to Section 4999 of the Code due to the characterization of such acceleration of vesting, payment or
benefit as an “excess parachute payment” under Section 280G of the Code, then, provided such election would not subject the Participant to taxation under Section 409A, the Participant may elect to reduce the amount of any
acceleration of vesting called for under the Award in order to avoid such characterization. 
 (b) Determination by Tax Firm.
To aid the Participant in making any election called for under Section 10.2(a), no later than the date of the occurrence of any event that might reasonably be anticipated to result in an “excess parachute payment” to the Participant
as described in Section 10.2(a), the Company shall request a determination in writing by the professional firm engaged by the Company for general tax purposes, or, if the tax firm so engaged by the Company is serving as accountant or auditor
for the Acquiror, the Company will appoint a nationally recognized tax firm to make the determinations required by this Section (the “Tax Firm”). As soon as practicable thereafter, the Tax Firm shall determine
and report to the Company and the Participant the amount of such acceleration of vesting, payments and benefits which would produce the greatest after-tax benefit to the Participant. For the purposes of such
determination, the Tax Firm may rely on reasonable, good faith interpretations concerning the application of Sections 280G and 4999 of the Code. The Company and the Participant shall furnish to the Tax Firm such information and documents as the Tax
Firm may reasonably request in order to make its required determination. The Company shall bear all fees and expenses the Tax Firm may charge in connection with its services contemplated by this Section. 

11. TAX WITHHOLDING. 

11.1 Tax Withholding in General. The Company shall have the right to deduct from any and all payments made under the Plan, or to require
the Participant, through payroll withholding, cash payment or otherwise, to make adequate provision for, the federal, state, local and foreign taxes (including social insurance), if any, required by law to be withheld by any Participating Company
with respect to an Award or the shares acquired pursuant thereto. The Company shall have no obligation to deliver shares of Stock, to release shares of Stock from an escrow established pursuant to an Award Agreement, or to make any payment in cash
under the Plan until the Participating Company Group’s tax withholding obligations have been satisfied by the Participant. 

  
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 11.2 Withholding in or Directed Sale of Shares. The Company shall have the right, but
not the obligation, to deduct from the shares of Stock issuable to a Participant upon the exercise, vesting or settlement of an Award, or to accept from the Participant the tender of, a number of whole shares of Stock having a Fair Market Value, as
determined by the Company, equal to all or any part of the tax withholding obligations of any Participating Company. The Fair Market Value of any shares of Stock withheld or tendered to satisfy any such tax withholding obligations shall not exceed
the amount determined by the applicable minimum statutory withholding rates. The Company may require a Participant to direct a broker, upon the vesting, exercise or settlement of an Award, to sell a portion of the shares subject to the Award
determined by the Company in its discretion to be sufficient to cover the tax withholding obligations of any Participating Company and to remit an amount equal to such tax withholding obligations to the Participating Company in cash. 

12. COMPLIANCE WITH SECTION 409A. 

12.1 In General. The Plan and all Awards granted hereunder are intended to comply with, or otherwise be exempt from, Section 409A.
The Plan and all Awards granted under the Plan shall be administered, interpreted, and construed in a manner consistent with Section 409A, as determined by the Company in good faith, to the extent necessary to avoid the imposition of additional
taxes under Section 409A(a)(1)(B) of the Code. It is intended that any election, payment or benefit which is made or provided pursuant to or in connection with any Award that may result in deferred compensation within the meaning of
Section 409A shall comply in all respects with the applicable requirements of Section 409A. 
 12.2 Certain Limitations.
With respect to any Award that is subject to Section 409A, the following shall apply, as applicable: 
 (a) Notwithstanding anything to
the contrary in the Plan or any Award Agreement, to the extent required to avoid tax penalties under Section 409A, amounts that would otherwise be payable and benefits that would otherwise be provided pursuant to the Plan on account of, and
during the six (6) month period immediately following, the Participant’s termination of Service shall instead be paid on the first payroll date after the six-month anniversary of the
Participant’s separation from service (or the Participant’s death, if earlier). 
 (b) Neither any Participant nor the Company
shall take any action to accelerate or delay the payment of any amount or benefits under an Award in any manner which would not be in compliance with Section 409A. 

(c) Notwithstanding anything to the contrary in the Plan or any Award Agreement, to the extent that any amount constituting deferred
compensation subject to Section 409A would become payable under the Plan by reason of a Change in Control, such amount shall become payable only if the event constituting the Change in Control would also constitute a change in ownership or
effective control of the Company or a change in the ownership of a substantial portion of the assets of the Company within the meaning of Section 409A. Any Award which constitutes deferred compensation subject to Section 409A and which
would vest and otherwise become payable upon a Change in Control as a result of the failure of the Acquiror to assume, continue or substitute for such Award in accordance with 

  
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Section 10.1(b) shall vest to the extent provided by such Award but shall be converted automatically at the effective time of such Change in Control into a right to receive, in cash on the
date or dates such award would have been settled in accordance with its then existing settlement schedule, an amount or amounts equal in the aggregate to the intrinsic value of the Award at the time of the Change in Control. 

(d) Should any provision of the Plan, any Award Agreement, or any other agreement or arrangement contemplated by the Plan be found not to
comply with, or otherwise be exempt from, the provisions of Section 409A, such provision shall be modified and given effect (retroactively if necessary), in the sole discretion of the Board, and without the consent of the holder of the Award,
in such manner as the Board determines to be necessary or appropriate to comply with, or to effectuate an exemption from, Section 409A. 

(e) Notwithstanding the foregoing, neither the Company nor the Board shall have any obligation to take any action to prevent the assessment of
any tax or penalty on any Participant under Section 409A, and neither the Company nor the Board will have any liability to any Participant for such tax or penalty. 

13. COMPLIANCE WITH SECURITIES LAW. 

The grant of Awards and the issuance of shares of Stock pursuant to any Award shall be subject to compliance with all applicable requirements
of federal, state and foreign law with respect to such securities and the requirements of any stock exchange or market system upon which the Stock may then be listed. In addition, no Award may be exercised or shares issued pursuant to an Award
unless (a) a registration statement under the Securities Act shall at the time of such exercise or issuance be in effect with respect to the shares issuable pursuant to the Award or (b) in the opinion of legal counsel to the Company, the
shares issuable pursuant to the Award may be issued in accordance with the terms of an applicable exemption from the registration requirements of the Securities Act. Except as otherwise determined by the Board, the Company intends that securities
issued pursuant to the Plan be exempt from requirements of registration and qualification of such securities pursuant to the exemptions afforded by Rule 701 promulgated under the Securities Act and Section 25102(o) of the California
Corporations Code or any other applicable exemptions, and the Plan shall be so construed. The inability of the Company to obtain from any regulatory body having jurisdiction the authority, if any, deemed by the Company’s legal 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. As a condition to
issuance of any Stock, the Company may require the Participant to satisfy any qualifications that may be necessary or appropriate, to evidence compliance with any applicable law or regulation and to make any representation or warranty with respect
thereto as may be requested by the Company. 

  
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 14. AMENDMENT OR TERMINATION
OF PLAN. 
 The Board may amend, suspend or terminate the Plan at any time. However, without the
approval of the Company’s stockholders, there shall be (a) no increase in the maximum aggregate number of shares of Stock that may be issued under the Plan (except by operation of the provisions of Sections 4.2 and 4.4), (b) no
change in the class of persons eligible to receive Incentive Stock Options, and (c) no other amendment of the Plan that would require approval of the Company’s stockholders under any applicable law, regulation or rule, including the rules
of any stock exchange or quotation system upon which the Stock may then be listed or quoted. No amendment, suspension or termination of the Plan shall affect any then outstanding Award unless expressly provided by the Board. Except as provided by
the next sentence, no amendment, suspension or termination of the Plan may have a materially adverse effect on any then outstanding Award without the consent of the Participant. Notwithstanding any other provision of the Plan or any Award Agreement
to the contrary, the Board may, in its sole and absolute discretion and without the consent of any Participant, amend the Plan or any Award Agreement, to take effect retroactively or otherwise, as it deems necessary or advisable for the purpose of
conforming the Plan or such Award Agreement to any present or future law, regulation or rule applicable to the Plan, including, but not limited to, Section 409A. 

15. MISCELLANEOUS PROVISIONS. 

15.1 Restrictions on Transfer of Shares. 

(a) Shares issued under the Plan may be subject to a right of first refusal, one or more repurchase options, or other conditions and
restrictions as determined by the Board in its discretion at the time the Award is granted. The Company shall have the right to assign at any time any repurchase right it may have, whether or not such right is then exercisable, to one or more
persons as may be selected by the Company. Upon request by the Company, each Participant shall execute any agreement evidencing such transfer restrictions prior to the receipt of shares of Stock hereunder and shall promptly present to the Company
any and all certificates representing shares of Stock acquired hereunder for the placement on such certificates of appropriate legends evidencing any such transfer restrictions. 

(b) Notwithstanding the provisions of any Award Agreement to the contrary, at any time prior to the date on which the Stock is listed on a
national securities exchange (as such term is used in the Exchange Act) or is traded on the over-the-counter market and prices therefore are published daily on business
days in a recognized financial journal, the Board may prohibit any Participant who acquires shares of Stock pursuant to the Plan or any transferee of such Participant from selling, transferring, assigning, pledging, or otherwise disposing of or
encumbering any such shares (each, a “Transfer”) without the prior written consent of the Board. The Board may withhold consent to any Transfer for any reason, including without limitation any Transfer
(i) to any individual or entity identified by the Company as a potential competitor or considered by the Company to be unfriendly, or (ii) if such Transfer increases the risk of the Company having a class of security held of record by such
number of persons as would require the Company to register any class of securities under the Exchange Act; or (iii) if such Transfer would result in the loss of any federal or state securities law exemption relied upon by the Company in
connection with the initial issuance of such shares or the issuance of any other securities; or (iv) if such Transfer is facilitated in any manner by any public posting, message board, trading portal, Internet site, or similar method of
communication, including without limitation any trading portal or Internet site intended to facilitate secondary transfers of securities; or (v) if such Transfer is to be effected in a brokered transaction; or (vi) if such Transfer would
be of less than all of the shares of Stock then held by the stockholder and its affiliates or is to be made to more than a single transferee. 

  
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 15.2 Forfeiture Events. The Board may determine that the Participant’s rights,
payments, and benefits with respect to an Award shall be subject to reduction, cancellation, forfeiture, or recoupment upon the occurrence of specified events, in addition to any otherwise applicable vesting or performance conditions of an Award.
Such events may include, but shall not be limited to, termination of Service for Cause, any act by a Participant, whether before or after termination of Service, that would constitute Cause for termination of Service, or any accounting restatement
due to material noncompliance of the Company with any financial reporting requirements of securities laws as a result of which, and to the extent that, such reduction, cancellation, forfeiture, or recoupment is required by applicable securities
laws. 
 15.3 Provision of Information. At least annually, copies of the Company’s balance sheet and income statement for the
just completed fiscal year shall be made available to each Participant and purchaser of shares of Stock upon the exercise of an Award; provided, however, that this requirement shall not apply if all offers and sales of securities pursuant to the
Plan comply with all applicable conditions of Rule 701 under the Securities Act. The Company shall not be required to provide such information to key persons whose duties in connection with the Company assure them access to equivalent information.
The Company shall deliver to each Participant such disclosures as are required in accordance with Rule 701 under the Securities Act. Notwithstanding the foregoing, at any time the Company is relying on the exemption provided by Rule 12h-1(f) under the Exchange Act, the Company shall provide to the applicable Participants the information described in Securities Act Rules 701(e)(3), (4) and (5) by a method allowed under Rule 12h-1(f)(1)(vi) and in accordance with the requirements of Rule 12h-1(f)(1)(vi), provided that the Participant agrees to keep the information confidential until the Company
becomes subject to the reporting requirements of Section 13 or Section 15(d) of the Exchange Act. 
 15.4 Rights as Employee,
Consultant or Director. No person, even though eligible pursuant to Section 5, shall have a right to be selected as a Participant, or, having been so selected, to be selected again as a Participant. Nothing in the Plan or any Award granted
under the Plan shall confer on any Participant a right to remain an Employee, Consultant or Director or interfere with or limit in any way any right of a Participating Company to terminate the Participant’s Service at any time. To the extent
that an Employee of a Participating Company other than the Company receives an Award under the Plan, that Award shall in no event be understood or interpreted to mean that the Company is the Employee’s employer or that the Employee has an
employment relationship with the Company. 
 15.5 Rights as a Stockholder. A Participant shall have no rights as a stockholder with
respect to any shares covered by an Award until the date of the issuance of such shares (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company). No adjustment shall be made for
dividends, distributions or other rights for which the record date is prior to the date such shares are issued, except as provided in Section 4.4 or another provision of the Plan. 

  
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 15.6 Delivery of Title to Shares. Subject to any governing rules or regulations, the
Company shall issue or cause to be issued the shares of Stock acquired pursuant to an Award and shall deliver such shares to or for the benefit of the Participant by means of one or more of the following: (a) by delivering to the Participant
evidence of book entry shares of Stock credited to the account of the Participant, (b) by depositing such shares of Stock for the benefit of the Participant with any broker with which the Participant has an account relationship, or (c) by
delivering such shares of Stock to the Participant in certificate form. 
 15.7 Fractional Shares. The Company shall not be required
to issue fractional shares upon the exercise or settlement of any Award. 
 15.8 Retirement and Welfare Plans. Neither Awards made
under this Plan nor shares of Stock or cash paid pursuant to such Awards may be included as “compensation” for purposes of computing the benefits payable to any Participant under any Participating Company’s retirement plans (both
qualified and non-qualified) or welfare benefit plans unless such other plan expressly provides that such compensation shall be taken into account in computing a Participant’s benefits. 

15.9 Severability. If any one or more of the provisions (or any part thereof) of this Plan shall be held invalid, illegal or
unenforceable in any respect, such provision shall be modified so as to make it valid, legal and enforceable, and the validity, legality and enforceability of the remaining provisions (or any part thereof) of the Plan shall not in any way be
affected or impaired thereby. 
 15.10 No Constraint on Corporate Action. Nothing in this Plan shall be construed to: (a) limit,
impair, or otherwise affect the Company’s or another Participating Company’s right or power to make adjustments, reclassifications, reorganizations, or changes of its capital or business structure, or to merge or consolidate, or dissolve,
liquidate, sell, or transfer all or any part of its business or assets; or (b) limit the right or power of the Company or another Participating Company to take any action which such entity deems to be necessary or appropriate. 

15.11 Unfunded Obligation. Participants shall have the status of general unsecured creditors of the Company. Any amounts payable to
Participants pursuant to the Plan shall be considered unfunded and unsecured obligations for all purposes, including, without limitation, Title I of the Employee Retirement Income Security Act of 1974. No Participating Company shall be required
to segregate any monies from its general funds, or to create any trusts, or establish any special accounts with respect to such obligations. The Company shall retain at all times beneficial ownership of any investments, including trust investments,
which the Company may make to fulfill its payment obligations hereunder. Any investments or the creation or maintenance of any trust or any Participant account shall not create or constitute a trust or fiduciary relationship between the Board or any
Participating Company and a Participant, or otherwise create any vested or beneficial interest in any Participant or the Participant’s creditors in any assets of any Participating Company. The Participants shall have no claim against any
Participating Company for any changes in the value of any assets which may be invested or reinvested by the Company with respect to the Plan. 

  
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 15.12 Choice of Law. Except to the extent governed by applicable federal law, the
validity, interpretation, construction and performance of the Plan and each Award Agreement shall be governed by the laws of the State of California, without regard to its conflict of law rules. 

15.13 Stockholder Approval. The Plan or any increase in the maximum aggregate number of shares of Stock issuable thereunder as provided
in Section 4.1 (the “Authorized Shares”) shall be approved by a majority of the outstanding securities of the Company entitled to vote by the later of (a) a period beginning twelve (12) months before and
ending twelve (12) months after the date of adoption thereof by the Board or (b) the first issuance of any security pursuant to the Plan in the State of California (within the meaning of Section 25008 of the California Corporations
Code). Awards granted prior to security holder approval of the Plan or in excess of the Authorized Shares previously approved by the security holders shall become exercisable no earlier than the date of security holder approval of the Plan or such
increase in the Authorized Shares, as the case may be, and such Awards shall be rescinded if such security holder approval is not received in the manner described in the preceding sentence. 

IN WITNESS WHEREOF, the undersigned Secretary of the Company certifies that the foregoing sets forth the ON24, Inc. 2014 Stock Plan as duly
adopted by the Board on June 17, 2014. 
  

	
	  

	Secretary

  
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 THE SECURITIES WHICH ARE THE SUBJECT OF THIS AGREEMENT HAVE NOT BEEN QUALIFIED WITH THE COMMISSIONER OF
CORPORATIONS OF THE STATE OF CALIFORNIA AND THE ISSUANCE OF SUCH SECURITIES OR THE PAYMENT OR RECEIPT OF ANY PART OF THE CONSIDERATION THEREFOR PRIOR TO SUCH QUALIFICATION IS UNLAWFUL, UNLESS THE SALE OF SECURITIES IS EXEMPT FROM QUALIFICATION BY
SECTION 25100, 25102, OR 25105 OF THE CALIFORNIA CORPORATIONS CODE. THE RIGHTS OF ALL PARTIES TO THIS AGREEMENT ARE EXPRESSLY CONDITIONED UPON SUCH QUALIFICATION BEING OBTAINED, UNLESS THE SALE IS SO EXEMPT. 

THE SECURITIES WHICH ARE THE SUBJECT OF THIS AGREEMENT HAVE BEEN ACQUIRED FOR INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR
DISTRIBUTION THEREOF. NO SUCH SALE OR DISPOSITION MAY BE EFFECTED WITHOUT AN EFFECTIVE REGISTRATION STATEMENT RELATED THERETO OR AN OPINION OF COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS NOT REQUIRED UNDER THE SECURITIES ACT OF
1933. 
 ON24, INC. 

STOCK OPTION AGREEMENT 
 ON24, Inc. has
granted to the Participant named in the Notice of Grant of Stock Option (the “Grant Notice”) to which this Stock Option Agreement (the “Option Agreement”) is attached
an option (the “Option”) to purchase shares of Stock upon the terms and conditions set forth in the Grant Notice and this Option Agreement. The Option has been granted pursuant to and shall in all respects be
subject to the terms and conditions of the ON24, Inc. 2014 Stock Plan (the “Plan”), as amended to the Date of Grant, the provisions of which are incorporated herein by reference. By signing the Grant Notice, the
Participant: (a) acknowledges receipt of, and represents that the Participant has read and is familiar with, the Grant Notice, this Option Agreement and the Plan, (b) accepts the Option subject to all of the terms and conditions of the
Grant Notice, this Option Agreement and the Plan, and (c) agrees to accept as binding, conclusive and final all decisions or interpretations of the Board upon any questions arising under the Grant Notice, this Option Agreement or the Plan. 

1. DEFINITIONS AND CONSTRUCTION. 

1.1 Definitions. Unless otherwise defined herein, capitalized terms shall have the meanings assigned to such terms in the
Grant Notice or the Plan. 
 1.2 Construction. Captions and titles contained herein are for convenience only and shall
not affect the meaning or interpretation of any provision of this Option Agreement. Except when otherwise indicated by the context, the singular shall include the plural and the plural shall include the singular. Use of the term “or” is
not intended to be exclusive, unless the context clearly requires otherwise. 

 2. TAX CONSEQUENCES. 

2.1 Tax Status of Option. This Option is intended to have the tax status designated in the Grant Notice. 

(a) Incentive Stock Option. If the Grant Notice so designates, this Option is intended to be an Incentive Stock Option
within the meaning of Section 422(b) of the Code, but the Company does not represent or warrant that this Option qualifies as such. The Participant should consult with the Participant’s own tax advisor regarding the tax effects of this
Option and the requirements necessary to obtain favorable income tax treatment under Section 422 of the Code, including, but not limited to, holding period requirements. (NOTE TO PARTICIPANT: If the Option is exercised more than three
(3) months after the date on which you cease to be an Employee (other than by reason of your death or permanent and total disability as defined in Section 22(e)(3) of the Code), the Option will be treated as a Nonstatutory Stock Option and
not as an Incentive Stock Option to the extent required by Section 422 of the Code.) 
 (b) Nonstatutory Stock Option. If
the Grant Notice so designates, this Option is intended to be a Nonstatutory Stock Option and shall not be treated as an Incentive Stock Option within the meaning of Section 422(b) of the Code. 

2.2 ISO Fair Market Value Limitation. If the Grant Notice designates this Option as an Incentive Stock Option, then to the extent
that the Option (together with all Incentive Stock Options granted to the Participant under all stock option plans of the Participating Company Group, including the Plan) becomes exercisable for the first time during any calendar year for shares
having a Fair Market Value greater than One Hundred Thousand Dollars ($100,000), the portion of such options which exceeds such amount will be treated as Nonstatutory Stock Options. For purposes of this Section, options designated as Incentive Stock
Options are taken into account in the order in which they were granted, and the Fair Market Value of stock is determined as of the time the option with respect to such stock is granted. If the Code is amended to provide for a different limitation
from that set forth in this Section, such different limitation shall be deemed incorporated herein effective as of the date required or permitted by such amendment to the Code. If the Option is treated as an Incentive Stock Option in part and as a
Nonstatutory Stock Option in part by reason of the limitation set forth in this Section, the Participant may designate which portion of such Option the Participant is exercising. In the absence of such designation, the Participant shall be deemed to
have exercised the Incentive Stock Option portion of the Option first. Separate certificates representing each such portion shall be issued upon the exercise of the Option. (NOTE TO PARTICIPANT: If the aggregate Exercise Price of the Option (that
is, the Exercise Price multiplied by the Number of Option Shares) plus the aggregate exercise price of any other Incentive Stock Options you hold (whether granted pursuant to the Plan or any other stock option plan of the Participating Company
Group) is greater than $100,000, you should contact the Chief Financial Officer of the Company to ascertain whether the entire Option qualifies as an Incentive Stock Option.) 

  
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 3. ADMINISTRATION. 

All questions of interpretation concerning the Grant Notice, this Option Agreement, the Plan or any other form of agreement or other document employed by the
Company in the administration of the Plan or the Option shall be determined by the Board. All such determinations by the Board shall be final, binding and conclusive upon all persons having an interest in the Option, unless fraudulent or made in bad
faith. Any and all actions, decisions and determinations taken or made by the Board in the exercise of its discretion pursuant to the Plan or the Option or other agreement thereunder (other than determining questions of interpretation pursuant to
the preceding sentence) shall be final, binding and conclusive upon all persons having an interest in the Option. Any Officer shall have the authority to act on behalf of the Company with respect to any matter, right, obligation, or election which
is the responsibility of or which is allocated to the Company herein, provided the Officer has apparent authority with respect to such matter, right, obligation, or election. 

4. EXERCISE OF THE OPTION. 

4.1 Right to Exercise. Except as otherwise provided herein, the Option shall be exercisable on and after the Initial Vesting Date
and prior to the termination of the Option (as provided in Section 6) in an amount not to exceed the number of Vested Shares less the number of shares previously acquired upon exercise of the Option, subject to the Company’s repurchase
rights set forth in Section 11. In no event shall the Option be exercisable for more shares than the Number of Option Shares, as adjusted pursuant to Section 9. 

4.2 Method of Exercise. Exercise of the Option shall be by means of electronic or written notice (the
“Exercise Notice”) in a form authorized by the Company. An electronic Exercise Notice must be digitally signed or authenticated by the Participant in such manner as required by the notice and transmitted to the
Company or an authorized representative of the Company (including a third-party administrator designated by the Company). In the event that the Participant is not authorized or is unable to provide an electronic Exercise Notice, the Option shall be
exercised by a written Exercise Notice addressed to the Company, signed by the Participant and delivered in person, by certified or registered mail, return receipt requested, by confirmed facsimile transmission, or by such other means as the Company
may permit, to the Company, or an authorized representative of the Company (including a third-party administrator designated by the Company). Each Exercise Notice, whether electronic or written, must state the Participant’s election to exercise
the Option, the number of whole shares of Stock for which the Option is being exercised and such other representations and agreements as to the Participant’s investment intent with respect to such shares as may be required pursuant to the
provisions of this Option Agreement. Further, each Exercise Notice must be received by the Company prior to the termination of the Option as set forth in Section 6 and must be accompanied by full payment of the aggregate Exercise Price for the
number of shares of Stock being purchased. The Option shall be deemed to be exercised upon receipt by the Company of such electronic or written Exercise Notice and the aggregate Exercise Price. 

  
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 4.3 Payment of Exercise Price. 

(a) Forms of Consideration Authorized. Except as otherwise provided below, payment of the aggregate Exercise Price for
the number of shares of Stock for which the Option is being exercised shall be made (i) in cash, by check or in cash equivalent, (ii) if permitted by the Company and subject to the limitations contained in Section 4.3(b), by means of
(1) a Stock Tender Exercise, (2) a Cashless Exercise or (3) a Net-Exercise; or (iii) by any combination of the foregoing. 

(b) Limitations on Forms of Consideration. The Company reserves, at any and all times, the right, in the Company’s sole and
absolute discretion, to establish, decline to approve or terminate any program or procedure providing for payment of the Exercise Price through any of the means described below, including with respect to the Participant notwithstanding that such
program or procedures may be available to others. 
 (i) Stock Tender Exercise. A “Stock Tender
Exercise” means the delivery of a properly executed Exercise Notice accompanied by (1) the Participant’s tender to the Company, or attestation to the ownership, in a form acceptable to the Company of whole shares of
Stock having a Fair Market Value that does not exceed the aggregate Exercise Price for the shares with respect to which the Option is exercised, and (2) the Participant’s payment to the Company in cash of the remaining balance of such
aggregate Exercise Price not satisfied by such shares’ Fair Market Value. A Stock Tender Exercise shall not be permitted if it would constitute a violation of the provisions of any law, regulation or agreement restricting the redemption of the
Company’s stock. If required by the Company, the Option may not be exercised by tender to the Company, or attestation to the ownership, of shares of Stock unless such shares either have been owned by the Participant for a period of time
required by the Company (and not used for another option exercise by attestation during such period) or were not acquired, directly or indirectly, from the Company. 

(ii) Cashless Exercise. A Cashless Exercise shall be permitted only upon the class of shares subject to the Option becoming publicly
traded in an established securities market. A “Cashless Exercise” means the delivery of a properly executed Exercise Notice together with irrevocable instructions to a broker in a form acceptable to the Company
providing for the assignment to the Company of the proceeds of a sale or loan with respect to shares of Stock acquired upon the exercise of the Option in an amount not less than the aggregate Exercise Price for such shares (including, without
limitation, through an exercise complying with the provisions of Regulation T as promulgated from time to time by the Board of Governors of the Federal Reserve System). 

(iii) Net-Exercise. A
“Net-Exercise” means the delivery of a properly executed Exercise Notice electing a procedure pursuant to which (1) the Company will reduce the number of shares
otherwise issuable to the Participant upon the exercise of the Option by the largest whole number of shares having a Fair Market Value that does not exceed the aggregate Exercise Price for the shares with respect to which the Option is exercised,
and (2) the Participant shall pay to the Company in cash the remaining balance of such aggregate Exercise Price not satisfied by such reduction in the number of whole shares to be issued. Following a
Net-Exercise, the number of shares remaining subject to the Option, if any, shall be reduced by the sum of (1) the net number of shares issued to the Participant upon such exercise, and (2) the
number of shares deducted by the Company for payment of the aggregate Exercise Price. 

  
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 4.4 Tax Withholding. 

(a) In General. At the time the Option is exercised, in whole or in part, or at any time thereafter as requested by a
Participating Company, the Participant hereby authorizes withholding from payroll and any other amounts payable to the Participant, and otherwise agrees to make adequate provision for any sums required to satisfy the federal, state, local and
foreign tax (including social insurance) withholding obligations of the Participating Company Group, if any, which arise in connection with the Option. The Company shall have no obligation to deliver shares of Stock until the tax withholding
obligations of the Participating Company Group have been satisfied by the Participant. 
 (b) Withholding in or Directed Sale of
Shares. The Company shall have the right, but not the obligation, to require the Participant to satisfy all or any portion of a Participating Company’s tax withholding obligations upon exercise of the Option by deducting from the
shares of Stock otherwise issuable to the Participant upon such exercise a number of whole shares having a fair market value, as determined by the Company as of the date of exercise, not in excess of the amount of such tax withholding obligations
determined by the applicable minimum statutory withholding rates. The Company may require the Participant to direct a broker, upon the exercise of the Option, to sell a portion of the shares subject to the Option determined by the Company in its
discretion to be sufficient to cover the tax withholding obligations of any Participating Company and to remit an amount equal to such tax withholding obligations to the Company in cash. 

4.5 Beneficial Ownership of Shares; Certificate Registration. The Participant hereby authorizes the Company, in its sole
discretion, to deposit for the benefit of the Participant with any broker with which the Participant has an account relationship of which the Company has notice any or all shares acquired by the Participant pursuant to the exercise of the Option.
Except as provided by the preceding sentence, a certificate for the shares as to which the Option is exercised shall be registered in the name of the Participant, or, if applicable, in the names of the heirs of the Participant. 

4.6 Restrictions on Grant of the Option and Issuance of Shares. The grant of the Option and the issuance of shares of
Stock upon exercise of the Option shall be subject to compliance with all applicable requirements of federal, state or foreign law with respect to such securities. The Option may not be exercised if the issuance of shares of Stock upon exercise
would constitute a violation of any applicable federal, state or foreign securities laws or other law or regulations or the requirements of any stock exchange or market system upon which the Stock may then be listed. In addition, the Option may not
be exercised unless (i) a registration statement under the Securities Act shall at the time of exercise of the Option be in effect with respect to the shares issuable upon exercise of the Option or (ii) in the opinion of legal counsel to
the Company, the shares issuable upon exercise of the Option may be issued in accordance with the terms of an applicable exemption from the registration requirements of the Securities Act. THE PARTICIPANT IS CAUTIONED THAT THE OPTION MAY NOT BE
EXERCISED UNLESS THE FOREGOING CONDITIONS ARE SATISFIED. ACCORDINGLY, THE 

  
 5 

 
PARTICIPANT MAY NOT BE ABLE TO EXERCISE THE OPTION WHEN DESIRED EVEN THOUGH THE OPTION IS VESTED. The inability of the Company to obtain from any regulatory body having jurisdiction the
authority, if any, deemed by the Company’s legal counsel to be necessary to the lawful issuance and sale of any shares subject to the Option 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. As a condition to the exercise of the Option, the Company may require the Participant to satisfy any qualifications that may be necessary or appropriate, to evidence compliance with any
applicable law or regulation and to make any representation or warranty with respect thereto as may be requested by the Company. 
 4.7
Fractional Shares. The Company shall not be required to issue fractional shares upon the exercise of the Option. 
 5.
NONTRANSFERABILITY OF THE OPTION. 
 During the lifetime of the Participant, the
Option shall be exercisable only by the Participant or the Participant’s guardian or legal representative. The Option shall not be subject in any manner to anticipation, alienation, sale, exchange, transfer, assignment, pledge, encumbrance, or
garnishment by creditors of the Participant or the Participant’s beneficiary, except transfer by will or by the laws of descent and distribution. Following the death of the Participant, the Option, to the extent provided in Section 7, may
be exercised by the Participant’s legal representative or by any person empowered to do so under the deceased Participant’s will or under the then applicable laws of descent and distribution. Notwithstanding the foregoing, for so long as
the Company is relying on the exemption provided by Rule 12h-1(f) under the Exchange Act, the Option and, prior to its exercise, the shares to be issued upon the exercise of the Option, shall not be
transferred except in compliance with the restrictions on transfer under Rule 12h-1(f) (including the requirement under such rule that any permitted transferee may not further transfer the Option) or be made
subject to any short position, “put equivalent position” or “call equivalent position” by the Participant, as such terms are defined in Rule 16a-1 of the Exchange Act. 

6. TERMINATION OF THE OPTION. 

The Option shall terminate and may no longer be exercised after the first to occur of (a) the close of business on the Option Expiration Date,
(b) the close of business on the last date for exercising the Option following termination of the Participant’s Service as described in Section 7, or (c) a Change in Control to the extent provided in Section 8. 

7. EFFECT OF TERMINATION OF SERVICE. 

7.1 Option Exercisability. The Option shall terminate immediately upon the Participant’s termination of Service to the extent that
it is then unvested and shall be exercisable after the Participant’s termination of Service to the extent it is then vested only during the applicable time period as determined below and thereafter shall terminate. 

(a) Disability. If the Participant’s Service terminates because of the Disability of the Participant, the Option, to
the extent unexercised and exercisable for Vested Shares on the date on which the Participant’s Service terminated, may be exercised by the Participant (or the Participant’s guardian or legal representative) at any time prior to the
expiration of twelve (12) months after the date on which the Participant’s Service terminated, but in any event no later than the Option Expiration Date. 

  
 6 

 (b) Death. If the Participant’s Service terminates because of the
death of the Participant, the Option, to the extent unexercised and exercisable for Vested Shares on the date on which the Participant’s Service terminated, may be exercised by the Participant’s legal representative or other person who
acquired the right to exercise the Option by reason of the Participant’s death at any time prior to the expiration of twelve (12) months after the date on which the Participant’s Service terminated, but in any event no later than the
Option Expiration Date. The Participant’s Service shall be deemed to have terminated on account of death if the Participant dies within three (3) months after the Participant’s termination of Service. 

(c) Termination for Cause. Notwithstanding any other provision of this Option Agreement, if the Participant’s Service is
terminated for Cause, the Option shall terminate in its entirety and cease to be exercisable immediately upon such termination of Service. 

(d) Other Termination of Service. If the Participant’s Service terminates for any reason, except Disability, death
or Cause, the Option, to the extent unexercised and exercisable for Vested Shares by the Participant on the date on which the Participant’s Service terminated, may be exercised by the Participant at any time prior to the expiration of three
(3) months after the date on which the Participant’s Service terminated, but in any event no later than the Option Expiration Date. 

7.2 Extension if Exercise Prevented by Law. Notwithstanding the foregoing other than termination of the Participant’s
Service for Cause, if the exercise of the Option within the applicable time periods set forth in Section 7.1 is prevented by the provisions of Section 4.6, the Option shall remain exercisable until the later of (a) thirty
(30) days after the date such exercise first would no longer be prevented by such provisions or (b) the end of the applicable time period under Section 7.1, but in any event no later than the Option Expiration Date. 

8. EFFECT OF CHANGE IN CONTROL. 

In the event of a Change in Control, except to the extent that the Board determines to settle the Option in accordance with Section 9.1(c) of the Plan,
the surviving, continuing, successor, or purchasing corporation or other business entity or parent thereof, as the case may be (the “Acquiror”), may, without the consent of the Participant, assume or continue in
full force and effect the Company’s rights and obligations under all or any portion of the Option or substitute for all or any portion of the Option a substantially equivalent option for the Acquiror’s stock. For purposes of this Section,
the Option or any portion thereof shall be deemed assumed if, following the Change in Control, the Option confers the right to receive, subject to the terms and conditions of the Plan and this Option Agreement, for each share of Stock subject to
such portion of the Option immediately prior to the Change in Control, the consideration (whether stock, cash, other securities or property or a combination thereof) to which a holder of a share of Stock on the effective date of the Change in
Control was entitled (and if holders were offered a choice of consideration, the type of consideration chosen by the holders of a majority of the outstanding shares of Stock); provided, however, that if such consideration is not solely common stock
of the 

  
 7 

 
Acquiror, the Board may, with the consent of the Acquiror, provide for the consideration to be received upon the exercise of the Option for each share of Stock to consist solely of common stock
of the Acquiror equal in Fair Market Value to the per share consideration received by holders of Stock pursuant to the Change in Control. If any portion of such consideration may be received by holders of Stock pursuant to the Change in Control on a
contingent or delayed basis, the Board may, in its discretion, determine such Fair Market Value per share as of the time of the Change in Control on the basis of the Board’s good faith estimate of the present value of the probable future
payment of such consideration. The Option shall terminate and cease to be outstanding effective as of the time of consummation of the Change in Control to the extent that the Option is neither assumed or continued by the Acquiror in connection with
the Change in Control nor exercised as of the time of the Change in Control. Notwithstanding the foregoing, shares acquired upon exercise of the Option prior to the Change in Control and any consideration received pursuant to the Change in Control
with respect to such shares shall continue to be subject to all applicable provisions of this Option Agreement except as otherwise provided herein. 

9. ADJUSTMENTS FOR CHANGES IN CAPITAL
STRUCTURE. 
 Subject to any required action by the stockholders of the Company and the requirements of Sections 409A and 424 of the
Code to the extent applicable, in the event of any change in the Stock effected without receipt of consideration by the Company, whether through merger, consolidation, reorganization, reincorporation, recapitalization, reclassification, stock
dividend, stock split, reverse stock split, split-up, split-off, spin-off, combination of shares, exchange of shares, or similar
change in the capital structure of the Company, or in the event of payment of a dividend or distribution to the stockholders of the Company in a form other than Stock (excepting normal cash dividends) that has a material effect on the Fair Market
Value of shares of Stock, appropriate and proportionate adjustments shall be made in the number, Exercise Price and kind of shares subject to the Option, in order to prevent dilution or enlargement of the Participant’s rights under the Option.
For purposes of the foregoing, conversion of any convertible securities of the Company shall not be treated as “effected without receipt of consideration by the Company.” Any fractional share resulting from an adjustment pursuant to this
Section shall be rounded down to the nearest whole number, and the Exercise Price shall be rounded up to the nearest whole cent. In no event may the Exercise Price be decreased to an amount less than the par value, if any, of the stock subject to
the Option. Such adjustments shall be determined by the Board, and its determination shall be final, binding and conclusive. 
 10.
RIGHTS AS A STOCKHOLDER, DIRECTOR, EMPLOYEE OR CONSULTANT. 

The Participant shall have no rights as a stockholder with respect to any shares covered by the Option until the date of the issuance of the shares for which
the Option has been exercised (as evidenced by the appropriate entry on the books of the Company or of a duly authorized transfer agent of the Company). No adjustment shall be made for dividends, distributions or other rights for which the record
date is prior to the date the shares are issued, except as provided in Section 9. If the Participant is an Employee, the Participant understands and acknowledges that, except as otherwise provided in a separate, written employment agreement
between a Participating Company and the Participant, the Participant’s employment is “at will” and is for no specified term. Nothing in this Option Agreement shall confer upon the Participant any right to continue in the Service of a
Participating Company or interfere in any way with any right of the Participating Company Group to terminate the Participant’s Service as a Director, an Employee or Consultant, as the case may be, at any time. 

  
 8 

 11. RIGHT OF FIRST
REFUSAL. 
 11.1 Grant of Right of First Refusal. Except as provided in Section 11.7 and
Section 16 below, in the event the Participant, the Participant’s legal representative, or other holder of shares acquired upon exercise of the Option proposes to sell, exchange, transfer, pledge, or otherwise dispose of any Vested Shares
(the “Transfer Shares”) to any person or entity, including, without limitation, any stockholder of a Participating Company, the Company shall have the right to repurchase the Transfer Shares under the terms and
subject to the conditions set forth in this Section 11 (the “Right of First Refusal”). 
 11.2
Notice of Proposed Transfer. Prior to any proposed transfer of the Transfer Shares, the Participant shall deliver written notice (the “Transfer Notice”) to the Company describing fully the
proposed transfer, including the number of Transfer Shares, the name and address of the proposed transferee (the “Proposed Transferee”) and, if the transfer is voluntary, the proposed transfer price, and
containing such information necessary to show the bona fide nature of the proposed transfer. In the event of a bona fide gift or involuntary transfer, the proposed transfer price shall be deemed to be the Fair Market Value of the Transfer Shares, as
determined by the Board in good faith. If the Participant proposes to transfer any Transfer Shares to more than one Proposed Transferee, the Participant shall provide a separate Transfer Notice for the proposed transfer to each Proposed Transferee.
The Transfer Notice shall be signed by both the Participant and the Proposed Transferee and must constitute a binding commitment of the Participant and the Proposed Transferee for the transfer of the Transfer Shares to the Proposed Transferee
subject only to the Right of First Refusal. 
 11.3 Bona Fide Transfer. If the Company determines that the information
provided by the Participant in the Transfer Notice is insufficient to establish the bona fide nature of a proposed voluntary transfer, the Company shall give the Participant written notice of the Participant’s failure to comply with the
procedure described in this Section 11, and the Participant shall have no right to transfer the Transfer Shares without first complying with the procedure described in this Section 11. The Participant shall not be permitted to transfer the
Transfer Shares if the proposed transfer is not bona fide. 
 11.4 Exercise of Right of First Refusal. If the Company
determines the proposed transfer to be bona fide, the Company shall have the right to purchase all, but not less than all, of the Transfer Shares (except as the Company and the Participant otherwise agree) at the purchase price and on the terms set
forth in the Transfer Notice by delivery to the Participant of a notice of exercise of the Right of First Refusal within thirty (30) days after the date the Transfer Notice is delivered to the Company. The Company’s exercise or failure to
exercise the Right of First Refusal with respect to any proposed transfer described in a Transfer Notice shall not affect the Company’s right to exercise the Right of First Refusal with respect to any proposed transfer described in any other
Transfer Notice, whether or not such other Transfer Notice is issued by the Participant or issued by a person other than the Participant with respect to a proposed transfer to the same Proposed Transferee. If the Company exercises the Right of First

  
 9 

 
Refusal, the Company and the Participant shall thereupon consummate the sale of the Transfer Shares to the Company on the terms set forth in the Transfer Notice within sixty (60) days after
the date the Transfer Notice is delivered to the Company (unless a longer period is offered by the Proposed Transferee); provided, however, that in the event the Transfer Notice provides for the payment for the Transfer Shares other than in cash,
the Company shall have the option of paying for the Transfer Shares by the present value cash equivalent of the consideration described in the Transfer Notice as reasonably determined by the Company. For purposes of the foregoing, cancellation of
any indebtedness of the Participant to any Participating Company shall be treated as payment to the Participant in cash to the extent of the unpaid principal and any accrued interest canceled. Notwithstanding anything contained in this Section to
the contrary, the period during which the Company may exercise the Right of First Refusal and consummate the purchase of the Transfer Shares from the Participant shall terminate no sooner than the completion of a period of eight (8) months
following the date on which the Participant acquired the Transfer Shares upon exercise of the Option. 
 11.5 Failure to Exercise Right of
First Refusal. If the Company fails to exercise the Right of First Refusal in full (or to such lesser extent as the Company and the Participant otherwise agree) within the period specified in Section 11.4 above, the
Participant may conclude a transfer to the Proposed Transferee of the Transfer Shares on the terms and conditions described in the Transfer Notice, provided such transfer occurs not later than ninety (90) days following delivery to the Company
of the Transfer Notice or, if applicable, following the end of the period described in the last sentence of Section 11.4. The Company shall have the right to demand further assurances from the Participant and the Proposed Transferee (in a form
satisfactory to the Company) that the transfer of the Transfer Shares was actually carried out on the terms and conditions described in the Transfer Notice. No Transfer Shares shall be transferred on the books of the Company until the Company has
received such assurances, if so demanded, and has approved the proposed transfer as bona fide. Any proposed transfer on terms and conditions different from those described in the Transfer Notice, as well as any subsequent proposed transfer by the
Participant, shall again be subject to the Right of First Refusal and shall require compliance by the Participant with the procedure described in this Section 11. 

11.6 Transferees of Transfer Shares. All transferees of the Transfer Shares or any interest therein, other than the
Company, shall be required as a condition of such transfer to agree in writing (in a form satisfactory to the Company) that such transferee shall receive and hold such Transfer Shares or interest therein subject to all of the terms and conditions of
this Option Agreement, including this Section 11 providing for the Right of First Refusal with respect to any subsequent transfer. Any sale or transfer of any shares acquired upon exercise of the Option shall be void unless the provisions of
this Section 11 are met. 
 11.7 Transfers Not Subject to Right of First Refusal. The Right of First Refusal shall
not apply to any transfer or exchange of the shares acquired upon exercise of the Option if such transfer or exchange is in connection with an Ownership Change Event. If the consideration received pursuant to such transfer or exchange consists of
stock of a Participating Company, such consideration shall remain subject to the Right of First Refusal unless the provisions of Section 11.9 result in a termination of the Right of First Refusal. 

  
 10 

 11.8 Assignment of Right of First Refusal. The Company shall have the
right to assign the Right of First Refusal at any time, whether or not there has been an attempted transfer, to one or more persons as may be selected by the Company. 

11.9 Early Termination of Right of First Refusal. The other provisions of this Option Agreement notwithstanding, the Right
of First Refusal shall terminate and be of no further force and effect upon (a) the occurrence of a Change in Control, unless the Acquiror assumes the Company’s rights and obligations under the Option or substitutes a substantially
equivalent option for the Acquiror’s stock for the Option, or (b) the existence of a public market for the class of shares subject to the Right of First Refusal. A “public market” shall be deemed to
exist if (i) such stock is listed on a national securities exchange (as that term is used in the Exchange Act) or (ii) such stock is traded on the
over-the-counter market and prices therefor are published daily on business days in a recognized financial journal. 

12. STOCK DISTRIBUTIONS SUBJECT TO OPTION
AGREEMENT. 
 If, from time to time, there is any stock dividend, stock split or other change, as described in Section 9, in the
character or amount of any of the outstanding stock of the corporation the stock of which is subject to the provisions of this Option Agreement, then in such event any and all new, substituted or additional securities to which the Participant is
entitled by reason of the Participant’s ownership of the shares acquired upon exercise of the Option shall be immediately subject to the Right of First Refusal with the same force and effect as the shares subject to the Right of First Refusal
immediately before such event. 
 13. NOTICE OF SALES UPON
DISQUALIFYING DISPOSITION. 
 The Participant shall dispose of the shares acquired pursuant to the Option only in
accordance with the provisions of this Option Agreement. In addition, if the Grant Notice designates this Option as an Incentive Stock Option, the Participant shall (a) promptly notify the Chief Financial Officer of the Company if the
Participant disposes of any of the shares acquired pursuant to the Option within one (1) year after the date the Participant exercises all or part of the Option or within two (2) years after the Date of Grant and (b) provide the
Company with a description of the circumstances of such disposition. Until such time as the Participant disposes of such shares in a manner consistent with the provisions of this Option Agreement, unless otherwise expressly authorized by the
Company, the Participant shall hold all shares acquired pursuant to the Option in the Participant’s name (and not in the name of any nominee) for the one-year period immediately after the exercise of the
Option and the two-year period immediately after Date of Grant. At any time during the one-year or two-year periods set forth
above, the Company may place a legend on any certificate representing shares acquired pursuant to the Option requesting the transfer agent for the Company’s stock to notify the Company of any such transfers. The obligation of the Participant to
notify the Company of any such transfer shall continue notwithstanding that a legend has been placed on the certificate pursuant to the preceding sentence. 

  
 11 

 14. LEGENDS. 

The Company may at any time place legends referencing the Right of First Refusal and any applicable federal, state or foreign securities law restrictions on
all certificates representing shares of stock subject to the provisions of this Option Agreement. The Participant shall, at the request of the Company, promptly present to the Company any and all certificates representing shares acquired pursuant to
the Option in the possession of the Participant in order to carry out the provisions of this Section. Unless otherwise specified by the Company, legends placed on such certificates may include, but shall not be limited to, the following: 

14.1 “THE SECURITIES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, AND MAY NOT BE
SOLD, TRANSFERRED, ASSIGNED OR HYPOTHECATED UNLESS THERE IS AN EFFECTIVE REGISTRATION STATEMENT UNDER SUCH ACT COVERING SUCH SECURITIES, THE SALE IS MADE IN ACCORDANCE WITH RULE 144 OR RULE 701 UNDER THE ACT, OR THE COMPANY RECEIVES AN OPINION
OF COUNSEL REASONABLY SATISFACTORY TO THE COMPANY, STATING THAT SUCH SALE, TRANSFER, ASSIGNMENT OR HYPOTHECATION IS EXEMPT FROM THE REGISTRATION AND PROSPECTUS DELIVERY REQUIREMENTS OF SUCH ACT.” 

14.2 “THE SHARES REPRESENTED BY THIS CERTIFICATE ARE SUBJECT TO CERTAIN RESTRICTIONS ON TRANSFER AND REPURCHASE OPTIONS IN FAVOR OF THE
CORPORATION OR ITS ASSIGNEE SET FORTH IN AN AGREEMENT BETWEEN THE CORPORATION AND THE REGISTERED HOLDER, OR SUCH HOLDER’S PREDECESSOR IN INTEREST, A COPY OF WHICH IS ON FILE AT THE PRINCIPAL OFFICE OF THIS CORPORATION.” 

14.3 “THE SHARES EVIDENCED BY THIS CERTIFICATE WERE ISSUED BY THE CORPORATION TO THE REGISTERED HOLDER UPON EXERCISE OF AN INCENTIVE STOCK
OPTION AS DEFINED IN SECTION 422 OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (“ISO”). IN ORDER TO OBTAIN THE PREFERENTIAL TAX TREATMENT AFFORDED TO ISOs, THE SHARES SHOULD NOT BE TRANSFERRED PRIOR TO [INSERT
DISQUALIFYING DISPOSITION DATE HERE]. SHOULD THE REGISTERED HOLDER ELECT TO TRANSFER ANY OF THE SHARES PRIOR TO THIS DATE AND FOREGO ISO TAX TREATMENT, THE TRANSFER AGENT FOR THE SHARES SHALL NOTIFY THE CORPORATION IMMEDIATELY. THE REGISTERED
HOLDER SHALL HOLD ALL SHARES PURCHASED UNDER THE INCENTIVE STOCK OPTION IN THE REGISTERED HOLDER’S NAME (AND NOT IN THE NAME OF ANY NOMINEE) PRIOR TO THIS DATE OR UNTIL TRANSFERRED AS DESCRIBED ABOVE.” 

15. LOCK-UP AGREEMENT. 

The Participant hereby agrees that in the event of any underwritten public offering of stock, including an initial public offering of stock, made by the
Company pursuant to an effective registration statement filed under the Securities Act, the Participant shall not offer, sell, contract to sell, pledge, hypothecate, grant any option to purchase or make any short sale of, or otherwise

  
 12 

 
dispose of any shares of stock of the Company or any rights to acquire stock of the Company for such period of time from and after the effective date of such registration statement as may be
established by the underwriter for such public offering; provided, however, that such period of time shall not exceed one hundred eighty (180) days from the effective date of the registration statement to be filed in connection with such public
offering; provided, further, however, that such one hundred eighty (180) day period may be extended for an additional period, not to exceed twenty (20) days, upon the request of the Company or the underwriter to
accommodate regulatory restrictions on (i) the publication or other distribution of research reports and (ii) analyst recommendations and opinions, including but not limited to, the restrictions contained in NASD Rule 2711(f)(4) or
NYSE Rule 472(f)(4), or any successor provisions or amendments thereto). The foregoing limitation shall not apply to shares registered in the public offering under the Securities Act. The Participant hereby agrees to enter into any agreement
reasonably required by the underwriters to implement the foregoing within a reasonable timeframe if so requested by the Company. 
 16.
RESTRICTIONS ON TRANSFER OF SHARES. 
 At any time prior to the
existence of a public market for the Stock, the Board may prohibit the Participant and any transferee of such Participant from selling, transferring, assigning, pledging, or otherwise disposing of or encumbering any shares acquired pursuant to the
Option (each, a “Transfer”) without the prior written consent of the Board. The Board may withhold consent for any reason, including without limitation any Transfer (i) to any individual or entity
identified by the Company as a potential competitor or considered by the Company to be unfriendly, or (ii) if such Transfer increases the risk of the Company having a class of security held of record by such number of persons as would require
the Company to register any class of securities under the Exchange Act; or (iii) if such Transfer would result in the loss of any federal or state securities law exemption relied upon by the Company in connection with the initial issuance of
such shares or the issuance of any other securities; or (iv) if such Transfer is facilitated in any manner by any public posting, message board, trading portal, Internet site, or similar method of communication, including without limitation any
trading portal or Internet site intended to facilitate secondary transfers of securities; or (v) if such Transfer is to be effected in a brokered transaction; or (vi) if such Transfer would be of less than all of the shares of Stock then
held by the stockholder and its affiliates or is to be made to more than a single transferee. No shares acquired upon exercise of the Option may be sold, exchanged, transferred (including, without limitation, any transfer to a nominee or agent of
the Participant), assigned, pledged, hypothecated or otherwise disposed of, including by operation of law in any manner which violates any of the provisions of this Option Agreement, and any such attempted disposition shall be void. The Company
shall not be required (a) to transfer on its books any shares which will have been transferred in violation of any of the provisions set forth in this Option Agreement or (b) to treat as owner of such shares or to accord the right to vote
as such owner or to pay dividends to any transferee to whom such shares will have been so transferred. 
 17.
MISCELLANEOUS PROVISIONS. 
 17.1 Termination or Amendment. The Board may terminate or
amend the Plan or the Option at any time; provided, however, that except as provided in Section 8 in connection with a Change in Control, no such termination or amendment may have a materially adversely effect on the Option or any unexercised
portion hereof without the consent of the Participant unless such termination or amendment is necessary to comply with any applicable law or government regulation, including, but not limited to Section 409A of the Code. No amendment or addition
to this Option Agreement shall be effective unless in writing. 

  
 13 

 17.2 Compliance with Section 409A. The Company intends that income
realized by the Participant pursuant to the Plan and this Option Agreement will not be subject to taxation under Section 409A of the Code. The provisions of the Plan and this Option Agreement shall be interpreted and construed in favor of
satisfying any applicable requirements of Section 409A of the Code. The Company, in its reasonable discretion, may amend (including retroactively) the Plan and this Agreement in order to conform to the applicable requirements of
Section 409A of the Code, including amendments to facilitate the Participant’s ability to avoid taxation under Section 409A of the Code. However, the preceding provisions shall not be construed as a guarantee by the Company of any
particular tax result for income realized by the Participant pursuant to the Plan or this Option Agreement. In any event, and except for the responsibilities of the Company set forth in Section 4.4, no Participating Company shall be
responsible for the payment of any applicable taxes incurred by the Participant on income realized by the Participant pursuant to the Plan or this Option Agreement. 

17.3 Further Instruments. The parties hereto agree to execute such further instruments and to take such further action as may reasonably
be necessary to carry out the intent of this Option Agreement. 
 17.4 Binding Effect. This Option Agreement shall inure to the
benefit of the successors and assigns of the Company and, subject to the restrictions on transfer set forth herein, be binding upon the Participant and the Participant’s heirs, executors, administrators, successors and assigns. 

17.5 Delivery of Documents and Notices. Any document relating to participation in the Plan, or any notice required or permitted
hereunder shall be given in writing and shall be deemed effectively given (except to the extent that this Option Agreement provides for effectiveness only upon actual receipt of such notice) upon personal delivery, electronic delivery at the e-mail address, if any, provided for the Participant by a Participating Company, or upon deposit in the U.S. Post Office or foreign postal service, by registered or certified mail, or with a nationally recognized
overnight courier service, with postage and fees prepaid, addressed to the other party at the address of such party set forth in the Grant Notice or at such other address as such party may designate in writing from time to time to the other party.

 (a) Description of Electronic Delivery. The Plan documents, which may include but do not necessarily include: the
Plan, the Grant Notice, this Option Agreement, and any reports of the Company provided generally to the Company’s stockholders, may be delivered to the Participant electronically. In addition, if permitted by the Company, the Participant may
deliver electronically the Grant Notice and Exercise Notice called for by Section 4.2 to the Company or to such third party involved in administering the Plan as the Company may designate from time to time. Such means of electronic delivery may
include but do not necessarily include the delivery of a link to a Company intranet or the Internet site of a third party involved in administering the Plan, the delivery of the document via e-mail or such
other means of electronic delivery specified by the Company. 

  
 14 

 (b) Consent to Electronic Delivery. The Participant acknowledges that the
Participant has read Section 17.5(a) of this Option Agreement and consents to the electronic delivery of the Plan documents and, if permitted by the Company, the delivery of the Grant Notice and Exercise Notice, as described in
Section 17.5(a). The Participant acknowledges that he or she may receive from the Company a paper copy of any documents delivered electronically at no cost to the Participant by contacting the Company by telephone or in writing. The Participant
further acknowledges that the Participant will be provided with a paper copy of any documents if the attempted electronic delivery of such documents fails. Similarly, the Participant understands that the Participant must provide the Company or any
designated third party administrator with a paper copy of any documents if the attempted electronic delivery of such documents fails. The Participant may revoke his or her consent to the electronic delivery of documents described in
Section 17.5(a) or may change the electronic mail address to which such documents are to be delivered (if Participant has provided an electronic mail address) at any time by notifying the Company of such revoked consent or revised e-mail address by telephone, postal service or electronic mail. Finally, the Participant understands that he or she is not required to consent to electronic delivery of documents described in Section 17.5(a).

 17.6 Integrated Agreement. The Grant Notice, this Option Agreement and the Plan, together with any employment, service or other
agreement with the Participant and a Participating Company referring to the Option, shall constitute the entire understanding and agreement of the Participant and the Participating Company Group with respect to the subject matter contained herein or
therein and supersede any prior agreements, understandings, restrictions, representations, or warranties among the Participant and the Participating Company Group with respect to such subject matter. To the extent contemplated herein or therein, the
provisions of the Grant Notice, the Option Agreement and the Plan shall survive any exercise of the Option and shall remain in full force and effect. 

17.7 Applicable Law. This Option Agreement shall be governed by the laws of the State of California as such laws are applied to
agreements between California residents entered into and to be performed entirely within the State of California. 
 17.8
Counterparts. The Grant Notice may be executed in counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. 

  
 15 

							
	☐ Incentive Stock Option	  	Participant:	  	  

	☐ Nonstatutory Stock Option	  		  		  	
		  		  	Date:	  	  

 STOCK OPTION EXERCISE NOTICE 

ON24, Inc. 
 Attention: Chief Financial Officer 

					
	                                      
                  	  		  	
	                                      
                  	  		  	

 Ladies and Gentlemen: 

1. Option. I was granted an option (the “Option”) to purchase shares of the common
stock (the “Shares”) of ON24, Inc. (the “Company”) pursuant to the Company’s 2014 Stock Plan (the “Plan”), my Notice of Grant of
Stock Option (the “Grant Notice”) and my Stock Option Agreement (the “Option Agreement”) as follows: 

 

					
	 Date of Grant:
	  	 	                      	 
	 Number of Option Shares:
	  	 	                      	 
	 Exercise Price per Share:
	  	$	                     	 

 2. Exercise of Option. I hereby elect to exercise the Option to purchase the following
number of Shares, all of which are Vested Shares, in accordance with the Grant Notice and the Option Agreement: 
  

					
	 Total Shares Purchased:
	  	 	                      	 
	 Total Exercise Price (Total Shares X Price per Share)
	  	$	                     	 

 3. Payments. I enclose payment in full of the total exercise price for the Shares in the
following form(s), as authorized by my Option Agreement: 
  

					
	 ☐ Cash:
	  	$	                                   
      	 
	 ☐ Check:
	  	$	                                   
      	 
	 ☐ Stock Tender Exercise:
	  	 	Contact Plan Administrator	 
	 ☐ Cashless Exercise:
	  	 	Contact Plan Administrator	 
	 ☐ Net Exercise:
	  	 	Contact Plan Administrator	 

 4. Tax Withholding. I authorize payroll withholding and otherwise will make adequate
provision for the federal, state, local and foreign tax withholding obligations of the Company, if any, in connection with the Option. If I am exercising a Nonstatutory Stock Option, I enclose payment in full of my withholding taxes, if any, as
follows: 
 (Contact Plan Administrator for amount of tax due.) 

 

					
	 ☐ Cash:
	  	$	                     	 
	 ☐ Check:
	  	$	                     	 

 5. Participant Information. 

 

					
	 My address is:
	  	  

		
		  	  

					
		
	 My Social Security Number is:
	  	  

 6. Notice of Disqualifying Disposition. If the Option is an Incentive Stock Option,
I agree that I will promptly notify the Chief Financial Officer of the Company if I transfer any of the Shares within one (1) year from the date I exercise all or part of the Option or within two (2) years of the Date of Grant. 

7. Binding Effect. I agree that the Shares are being acquired in accordance with and subject to the terms, provisions and
conditions of the Grant Notice, the Option Agreement, including the Right of First Refusal set forth therein, and the Plan, to all of which I hereby expressly assent. This Agreement shall inure to the benefit of and be binding upon my heirs,
executors, administrators, successors and assigns. 
 8. Transfer. I understand and acknowledge that the Shares have not
been registered under the Securities Act of 1933, as amended (the “Securities Act”), and that consequently the Shares must be held indefinitely unless they are subsequently registered under the Securities Act,
an exemption from such registration is available, or they are sold in accordance with Rule 144 or Rule 701 under the Securities Act. I further understand and acknowledge that the Company is under no obligation to register the Shares. I
understand that the certificate or certificates evidencing the Shares will be imprinted with legends which prohibit the transfer of the Shares unless they are registered or such registration is not required in the opinion of legal counsel
satisfactory to the Company. 
 I am aware that Rule 144 under the Securities Act, which permits limited public resale of securities
acquired in a nonpublic offering, is not currently available with respect to the Shares and, in any event, is available only if certain conditions are satisfied. I understand that any sale of the Shares that might be made in reliance upon
Rule 144 may only be made in limited amounts in accordance with the terms and conditions of such rule and that a copy of Rule 144 will be delivered to me upon request. 

I understand that I am purchasing the Shares pursuant to the terms of the Plan, the Grant Notice and my Option Agreement, copies of which I
have received and carefully read and understand. 
  

			
	Very truly yours,
	
	  

	(Signature)

  

			
	 Receipt of the above is hereby acknowledged.

	
	 ON24, Inc.

	By:	 	
                     
                                         
   

			
	Title:	 	
                     
                                

			
	Dated:	 	
                     
                                

  
 2

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