Document:

EX-10.1

 Exhibit 10.1 

TENABLE HOLDINGS, INC. 

2016 STOCK INCENTIVE PLAN 

(Amended and Restated as of January 18, 2017) 

(Amended on February 23, 2017) 

(Amended on February 21, 2018) 

(Amended on June 15, 2018) 
  

	 	1.	PURPOSE. 

 The purpose of the Plan is to assist the Company in attracting,
retaining, motivating, and rewarding certain key employees, officers, directors, and consultants of the Company Group and promoting the creation of long-term value for stockholders of the Company by closely aligning the interests of such individuals
with those of such stockholders. The Plan authorizes the award of Stock-based incentives to Eligible Persons to encourage such persons to expend maximum effort in the creation of stockholder value. 

The Plan replaces the Prior Plans for Awards granted on or after the Effective Date. Awards may not be granted under the Prior Plans beginning
on the Effective Date, but the adoption and effectiveness of the Plan will not affect the terms or conditions of any outstanding grants under the Prior Plans for Awards prior to the Effective Date. The Plan was originally adopted by the Company on
the Effective Date. The current version of the Plan is an amendment and restatement of the Plan, which was approved by the Board on January 18, 2017 (the “Restatement Effective Date”). On February 23, 2017, the Board
approved an amendment to the Plan to increase the number of shares of Stock subject to and reserved for issuance pursuant to the Plan by 2,000,000 shares. On February 21, 2018, the Board approved an amendment to the Plan to increase the number
of shares of Stock subject to and reserved for issuance pursuant to the Plan by 3,000,000 shares. On June 15, 2018, the Board approved an amendment to the Plan to increase the number of shares of Stock subject to and reserved for issuance pursuant
to the Plan by 4,000,000 shares. 
  

	 	2.	DEFINITIONS. 

 For purposes of the Plan, the following terms shall be
defined as set forth below: 
 (a) “280G Payments” has the meaning set forth in Section 12 hereof. 

(b) “Award” means any Option, Restricted Stock, or other Stock-based award granted under the Plan. 

(c) “Award Agreement” means an Option Agreement, a Restricted Stock Agreement, or an agreement governing the grant of any
other Stock-based award granted under the Plan. 
 (d) “Board” means the Board of Directors of the Company. 

(e) “Cause” means, with respect to any Participant and in the absence of an Award Agreement or Participant Agreement
otherwise defining Cause, (1) the Participant’s conviction of or indictment for any crime (whether or not involving the Company Group) (A) constituting a felony or (B) that has, or could reasonably be expected to result in, an
adverse impact on the performance of the Participant’s duties to the Service Recipient, or otherwise has, 

 
or could reasonably be expected to result in, an adverse impact on the business or reputation of any member of the Company Group; (2) conduct of the Participant, in connection with his or
her employment or service, that has resulted, or could reasonably be expected to result, in material injury to the business or reputation of any member of the Company Group; (3) any material violation of the policies of the Service Recipient,
including, but not limited to, those relating to sexual harassment or the disclosure or misuse of confidential information, or those set forth in the manuals or statements of policy of the Service Recipient; (4) the Participant’s act(s) of
gross negligence or willful misconduct in the course of his or her employment or service with the Service Recipient; (5) misappropriation by the Participant of any material assets or any business opportunities of any member of the Company
Group; (6) embezzlement or fraud committed by the Participant, at the Participant’s direction, or with the Participant’s prior actual knowledge; or (7) willful neglect in the performance of the Participant’s duties for the
Service Recipient or willful or repeated failure or refusal to perform such duties; provided, however, that with respect to any Termination for Cause relying on clause (2), (3) or (7) of this sentence, to the extent that such act or acts
or failure or failures to act are curable, the Participant shall be given not less than ten (10) days’ written notice of the Service Recipient’s intention to terminate the Participant for Cause, such notice to state in detail the
particular act or acts or failure or failures to act that constitute the grounds on which the proposed Termination for Cause is based, and such Termination shall be effective at the expiration of such ten (10) day notice period unless the
Committee determines in its sole discretion that the Participant has cured or taken steps designed to result in cure of such act or acts or failure or failures to act that give rise to Cause during such period. If, within ninety (90) days
subsequent to the Termination of a Participant for any reason other than by the Service Recipient for Cause, it is discovered that the Participant’s employment or service could have been terminated for Cause pursuant to clause (5) or (6)
of the immediately preceding sentence, such Participant’s employment or service shall, at the discretion of the Committee, be deemed to have been terminated by the Service Recipient for Cause for all purposes under the Plan, and the Participant
shall be required to repay to the Company all amounts received by him or her in connection with Awards following such Termination that would have been forfeited under the Plan had such Termination been by the Service Recipient for Cause. In the
event that there is an Award Agreement or Participant Agreement otherwise defining Cause, “Cause” shall have the meaning provided in such agreement, and a Termination by the Service Recipient for Cause hereunder shall not be deemed
to have occurred unless all applicable notice and cure periods in such Award Agreement or Participant Agreement are complied with. 
 (f)
“Change in Control” means (1) a change in ownership or control of the Company effected through a transaction or series of transactions (other than an offering of Stock to the general public through a registration statement
filed with the Securities and Exchange Commission or similar non–United States regulatory agency) whereby any Person or Group directly or indirectly acquires “beneficial ownership” (within the meaning of Rule 13d-3 under the Exchange Act) of securities of the Company possessing more than fifty percent (50%) of the total combined voting power of the Company’s securities outstanding immediately after such acquisition
and pursuant to which the Investors cease to own, directly or indirectly, at least fifty percent (50%) of the Company Securities issued to the Investors on or before the Effective Date; or (2) the sale or disposition, in one or a series of
related transactions, of all or substantially all of the assets of the Company to any Person or Group. 

  
 2 

 (g) “Code” means the Internal Revenue Code of 1986, as amended from time to
time, including regulations thereunder and successor provisions and regulations thereto. 
 (h) “Committee” means the Board
or such committee thereof consisting of two or more individuals appointed by the Board to administer the Plan. 
 (i)
“Company” means Tenable Holdings, Inc., a Delaware corporation. 
 (j) “Company Group” means the Company,
together with each direct or indirect subsidiary of the Company. 
 (k) “Company Securities” means equity securities of the
Company acquired by the Investors from time to time. 
 (l) “Competitive Activity” means, with respect to any Participant
and in the absence of an Award Agreement or Participant Agreement containing covenants relating to competition with the Service Recipient of the Participant, without the prior written consent of the applicable member(s) of the Company Group,
engaging in any business activity (whether as a principal, partner, joint venturer, agent, employee, salesperson, consultant, independent contractor, director or officer) with any business or entity that, at any time during the six (6) month
period following the Participant’s Termination, provides or seeks to provide, any products or services similar to or related to any products sold or any services provided by the Company Group (including those services or products being
researched or developed during Participant’s employment or other service with the Company Group), where such activity would involve the applicable Participant developing, providing, or performing services that are similar to any services that
such Participant provided to or performed for the Company Group during his or her employment or other service relationship with the Company Group. If a Participant’s Award Agreement or effective Participant Agreement contains covenants relating
to restrictions on competition, engaging in “Competitive Activity” with respect to such Participant shall mean the breach of such restrictive covenants. 

(m) “Corporate Event” has the meaning set forth in Section 11(b) hereof. 

(n) “Data” has the meaning set forth in Section 21(h) hereof. 

(o) “Disability” means, in the absence of an Award Agreement or Participant Agreement otherwise defining Disability, the
permanent and total disability of such Participant within the meaning of Section 22(e)(3) of the Code. In the event that there is an Award Agreement or Participant Agreement defining Disability, “Disability” shall have the
meaning provided in such agreement, and a Termination by reason of a Disability hereunder shall not be deemed to have occurred unless all applicable notice periods in such Award Agreement or Participant Agreement are complied with. 

(p) “Drag-Along Notice” has the meaning set forth in Section 8(b) hereof. 

(q) “Drag-Along Right” has the meaning set forth in Section 8(b) hereof. 

  
 3 

 (r) “Effective Date” means May 13, 2016, the original effective date of the
Plan. 
 (s) “Eligible Person” means (1) each employee of any member of the Company Group, including each such person
who may also be a director of any member of the Company Group, (2) each non-employee director of any member of the Company Group, (3) each other natural person who provides substantial services to
any member of the Company Group, and (4) any natural person who has been offered employment by any member of the Company Group; provided, that such prospective employee may not receive any payment or exercise any right relating to an
Award until such person has commenced employment with any member of the Company Group. An employee on an approved leave of absence may be considered as still in the employ of a member of the Company Group for purposes of eligibility for
participation in the Plan. 
 (t) “Exchange Act” means the Securities Exchange Act of 1934, as amended from time to time,
including rules and regulations thereunder and successor provisions and rules and regulations thereto. 
 (u) “Excise Tax”
has the meaning set forth in Section 12 hereof. 
 (v) “Expiration Date” means, with respect to any Option, the date
upon which the term of such Option expires, as determined under Section 5(b) hereof. 
 (w) “Fair Market Value” means,
as of any date when the Stock is listed on one or more national securities exchanges, the closing price reported on the principal national securities exchange on which such Stock is listed and traded on the date immediately prior to the date of
determination, or, if the closing price is not reported on such date, the closing price on the most recent date on which such closing price is reported. If the Stock is not listed on a national securities exchange, the Fair Market Value shall mean
the amount determined by the Committee in good faith to be the fair market value per share of Stock. For purposes of determining the Fair Market Value of any Stock Equivalents, the Fair Market Value shall be determined in accordance with the
previous two sentences and such value shall be reduced by the applicable exercise or strike price applicable to such Stock Equivalent. 

(x) “Incentive Stock Option” means an Option that by its terms qualifies and is otherwise intended to qualify as an incentive
stock option within the meaning of Section 422 of the Code. 
 (y) “Investors” means, collectively, each investment
fund managed by or affiliated with either Insight Venture Management, LLC or Accel Management Co. Inc. or any of their respective affiliates. 

(z) “IPO” means an initial underwritten public offering of the Company’s equity securities pursuant to an effective Form
S-1 or Form F-1 registration statement filed under the Securities Act or similar law or regulation governing the offering and sale of securities in a jurisdiction other
than the United States. 

  
 4 

 (aa) “IPO Date” means the effective date of the registration statement for the
IPO. 
 (bb) “Lock-Up Period” has the meaning set forth in Section 8(a)
hereof. 
 (cc) “Nonstatutory Stock Option” means an Option that by its terms does not qualify or is not intended to
qualify as an Incentive Stock Option. 
 (dd) “Notice” has the meaning set forth in Section 8(d) hereof. 

(ee) “Option” means a conditional right, granted to a Participant under Section 5 hereof, to purchase Stock at a
specified price during a specified time period. 
 (ff) “Option Agreement” means a written agreement between the Company
and a Participant evidencing the terms and conditions of an individual Option grant. 
 (gg) “Parent” means a “parent
corporation,” whether now or hereafter existing, as defined in Section 424(e) of the Code. 
 (hh) “Participant”
means an Eligible Person who has been granted an Award under the Plan or, if applicable, such other person or entity who holds an Award. 

(ii) “Participant Agreement” means an employment or services agreement between a Participant and the Service Recipient that
describes the terms and conditions of such Participant’s employment or service with the Service Recipient and is effective on the applicable date of grant with respect to any Award. 

(jj) “Per Share Drag-Along Purchase Price” has the meaning set forth in Section 8(b)(1) hereof. 

(kk) “Permitted Transfer” means any transfer by a Participant of all or any portion of his or her (1) shares of Stock or
Stock Equivalents (other than any Incentive Stock Options) to (A) any trust established for the sole benefit of such Participant or such Participant’s spouse or direct lineal descendants, (B) any other entity (including an Individual
Retirement Account or similar investment account) in which the direct and beneficial owner of all voting securities of such entity is held by such Participant, (C) such Participant’s heirs, executors, administrators, or personal
representatives upon the death, incompetency, or Disability of such Participant, or (D) subject to approval of the Company or a duly authorized officer of any member of the Company Group, to a person or persons who acquire a proprietary
interest in shares of Stock or Stock Equivalents pursuant to the terms of a domestic relations order, official marital settlement agreement or other divorce or separation instrument as permitted by Treasury Regulation
Section 1.421-1(b)(2), or (2) Incentive Stock Options, for purposes of Section 5(f) below, to any trust if, under Section 671 of the Code and applicable law, the Participant is considered
the sole beneficial owner of the Incentive Stock Options while they are held in the trust. 
 (ll) “Person or Group” means
any “person” (as defined in Section 3(a)(9) of the Exchange Act) or any two or more persons deemed to be one “person” (as used in 

  
 5 

 
Sections 13(d)(3) and 14(d)(2) of the Exchange Act), in each case, other than the Investors, any member of the Company Group, or an employee benefit plan maintained by any member of the Company
Group. 
 (mm) “Plan” means this Tenable Holdings, Inc. 2016 Stock Incentive Plan, as amended from time to time. 

(nn) “Prime Rate” means the rate from time to time published in the “Money Rates” section of The Wall Street
Journal as being the “Prime Rate” (or, if more than one rate is published as the Prime Rate, then the highest of such rates). 

(oo) “Prior Plans” means Company’s 2012 Stock Incentive Plan and the Company’s 2002 Stock Incentive Plan. 

(pp) “Prohibition Event” has the meaning set forth in Section 9(c) hereof. 

(qq) Qualifying Transaction” means a transaction that results in a change in ownership or effective control of a corporation or in
the ownership of a substantial portion of the assets of a corporation, as described in Section 280G(b)(2)(A)(i) of the Code. 
 (rr)
“Repurchase Price” means — 
 (1) on or following the Termination of a Participant other than by the
Service Recipient for Cause, an amount equal to the Fair Market Value of the Stock or Stock Equivalents, as applicable, on the date that the written notice of repurchase is delivered pursuant to Section 9(a) hereof; 

(2) on or following the Termination of a Participant by the Service Recipient for Cause, the lesser of (A) the original
purchase price paid for such shares of Stock or Stock Equivalents, as applicable (as adjusted for any subsequent changes in the outstanding Stock or in the capital structure of the Company) less any dividends or other distributions or bonus
received (or to be received) by the Participant (or any transferee) in respect of the shares of Stock or Stock Equivalents, as applicable (including any cash bonus paid in lieu of an adjustment to an Option) prior to the date of repurchase and
(B) the Fair Market Value of the Stock or the Stock Equivalents, as applicable, on the date that the written notice of repurchase is delivered pursuant to Section 9(a) hereof; provided, however, that if (x) such Termination
occurs after the ten (10) year anniversary of the date of grant of the Award to which the shares of Stock or Stock Equivalents, as applicable, subject to the Repurchase Right relate, and (y) the Award to which the shares of Stock or Stock
Equivalents, as applicable, subject to the Repurchase Right relate is intended to qualify as a “stock right” that does not provide for a “deferral of compensation” within the meaning of Section 409A of the Code, the
Repurchase Price shall instead be the Fair Market Value of the Stock or Stock Equivalents, as applicable, on the date of repurchase; or 

(3) notwithstanding anything contained within clause (1) or (2) above, if a Participant has violated any restrictive
covenant to which he or she is subject to with any member of the Company Group, the Repurchase Price shall be the lesser of (A) the 

  
 6 

 
original purchase price paid for such shares of Stock or Stock Equivalents, as applicable (as adjusted for any subsequent changes in the outstanding shares of Stock or in the capital structure of
the Company) less any dividends or other distributions or bonus received (or to be received) by the Participant (or any transferee) in respect of the shares of Stock or Stock Equivalents, as applicable (including any cash bonus paid in lieu
of an adjustment to an Option) prior to the date of repurchase and (B) the Fair Market Value of the shares of Stock or Stock Equivalents, as applicable, on the date that the written notice of repurchase is delivered pursuant to
Section 9(a) hereof. 
 (ss) “Repurchase Right” has the meaning set forth in Section 9 hereof. 

(tt) “Repurchase Right Exercise Period” means the period commencing on the date of Termination of a Participant with the
Service Recipient for any reason and ending on the IPO Date. 
 (uu) “Repurchase Right Lapse Date” means the earlier to
occur of (1) the IPO Date and (2) a Change in Control resulting in the listing of the Stock on a national securities exchange. 

(vv) “Restricted Stock” means Stock granted to a Participant under Section 6 hereof that is subject to certain
restrictions and to a risk of forfeiture, or issued pursuant to the early exercise of Options. 
 (ww) “Restricted Stock
Agreement” means a written agreement between the Company and a Participant evidencing the terms and conditions of an individual Restricted Stock grant. 

(xx) “Right of First Refusal” has the meaning set forth in Section 8(d) hereof. 

(yy) “Section 280G Approval” means the stockholder approval required pursuant to Section 280G(b)(5)(B) of the Code.

 (zz) “Securities Act” means the Securities Act of 1933, as amended from time to time, including rules and regulations
thereunder and successor provisions and rules and regulations thereto. 
 (aaa) “Service Recipient” means, with respect to
a Participant holding a given Award, the applicable member of the Company Group by which the Participant is, or following a Termination was most recently, principally employed or to which the Participant provides, or following a Termination was most
recently providing, services, as applicable. 
 (bbb) “Stock” means the Company’s common stock, par value $0.01 per
share, and such other securities as may be substituted for such common stock pursuant to Section 11 hereof. 
 (ccc) “Stock
Equivalent” means any shares, warrants, rights, units, calls, options or other securities exchangeable or exercisable for, or convertible into, directly or indirectly, shares of Stock, which, for the avoidance of doubt, includes Options
granted pursuant to Section 5 hereof. 

  
 7 

 (ddd) “Stockholder Representative” has the meaning set forth in
Section 8(b) hereof. 
 (eee) “Subject Shares” has the meaning set forth in Section 8(b) hereof. 

(fff) “Subsidiary” means a “subsidiary corporation,” whether now or hereafter existing, as defined in
Section 424(f) of the Code. 
 (ggg) “Termination” means the termination of a Participant’s employment or
service, as applicable, with the Service Recipient; provided, however, that, if so determined by the Committee at the time of any change in status in relation to the Service Recipient (e.g., a Participant ceases to be an employee and
begins providing services as a consultant, or vice versa), such change in status will not be deemed to be a Termination hereunder. Notwithstanding anything herein to the contrary, a Participant’s change in status in relation to the Service
Recipient (for example, a change from employee to consultant) shall not be deemed a Termination hereunder with respect to any Awards constituting nonqualified deferred compensation subject to Section 409A of the Code that are payable upon a
Termination unless such change in status constitutes a “separation from service” within the meaning of Section 409A of the Code. Unless otherwise determined by the Committee, in the event that any Service Recipient ceases to be a
member of the Company Group (by reason of sale, divestiture, spin-off, or other similar transaction), each Participant that is employed by or provides services to such Service Recipient shall be deemed to have
suffered a Termination hereunder as of the date of the consummation of such transaction, unless the Participant’s employment or service is transferred to another entity that would constitute a Service Recipient immediately following such
transaction. For the avoidance of doubt, in the event that a Participant provides notice of his or her intention to resign at a future date, the Service Recipient may, in its sole and absolute discretion, accelerate such date of Termination without
changing the characterization of such Termination as a resignation by the Participant. 
  

	 	3.	ADMINISTRATION. 

 (a) Authority of the Committee. Except as
otherwise provided below, the Plan shall be administered by the Committee. The Committee shall have full and final authority, in each case subject to and consistent with the provisions of the Plan, to (1) select Eligible Persons to become
Participants, (2) grant Awards, (3) determine the type, number of shares of Stock subject to, other terms and conditions of, and all other matters relating to, Awards, (4) prescribe Award Agreements (which need not be identical for
each Participant) and rules and regulations for the administration of the Plan, (5) construe and interpret the Plan and Award Agreements and correct defects, supply omissions, and reconcile inconsistencies therein, (6) suspend the right to
exercise Awards during any period that the Committee deems appropriate to comply with applicable securities laws, and thereafter extend the exercise period of an Award by an equivalent period of time or such shorter period required by applicable
law, including Section 409A of the Code, and (7) make all other decisions and determinations as the Committee may deem necessary or advisable for the administration of the Plan. Any action of

  
 8 

 
the Committee shall be final, conclusive, and binding on all persons, including, without limitation, each member of the Company Group, Eligible Persons, Participants, and beneficiaries of
Participants. For the avoidance of doubt, the Board shall have the authority to take all actions under the Plan that the Committee is permitted to take. 

(b) Delegation. To the extent permitted by applicable law, the Committee may delegate to officers or employees of any member of the
Company Group, or committees thereof, the authority, subject to such terms as the Committee shall determine, to perform such functions under the Plan, including, but not limited to, administrative functions, as the Committee may determine
appropriate. The Committee may appoint agents to assist it in administering the Plan. Any actions taken by an officer or employee delegated authority pursuant to this Section 3(b) within the scope of such delegation shall, for all purposes
under this Plan, be deemed to be an action taken by the Committee. Notwithstanding the foregoing or any other provision of the Plan to the contrary: (i) any Award granted under the Plan to any Eligible Person who is not an employee of any
member of the Company Group (including any non-employee director of any member of the Company Group) must be expressly approved by the Committee; (ii) no officer may grant an Award to himself or herself;
and (iii) the Committee may not delegate authority to an officer who is acting solely in the capacity of an officer (and not also as a director of the Company) to determine the Fair Market Value pursuant to Section 2(w) hereof. 

(c) Sections 409A and 457A. The Committee shall take into account compliance with Sections 409A and 457A of the Code in connection with
any grant of an Award under the Plan, to the extent applicable. Any payments in respect of an Award constituting nonqualified deferred compensation subject to Section 409A of the Code that are payable upon a Termination shall be delayed for
such period as may be necessary to meet the requirements of Section 409A(a)(2)(B)(i) of the Code. On the first business day following the expiration of such period, the Participant shall be paid, in a single lump sum without interest, an amount
equal to the aggregate amount of all payments delayed pursuant to the preceding sentence, and any remaining payments not so delayed shall continue to be paid pursuant to the payment schedule applicable to such Award. While the Awards granted
hereunder are intended to be structured in a manner to avoid the imposition of any penalty taxes under Sections 409A and 457A of the Code, in no event whatsoever shall the Company Group be liable for any additional tax, interest, or penalties that
may be imposed on a Participant as a result of Section 409A or Section 457A of the Code or any damages for failing to comply with Section 409A or Section 457A of the Code or any similar state or local laws (other than for
withholding obligations or other obligations applicable to employers, if any, under Section 409A or Section 457A of the Code). 
  

	 	4.	SHARES AVAILABLE UNDER THE PLAN. 

(a) Number of Shares Available for Delivery. Subject to adjustment as provided in Section 11 hereof, the total number of shares of
Stock reserved and available for delivery in connection with Awards under the Plan shall be equal to the sum of (1) 18,700,000 plus (2) to the extent that an award outstanding under the Prior Plans as of the Effective Date expires or is
canceled, forfeited, settled in cash, or otherwise terminated without a delivery to the grantee of the full number of shares to which the award related, the number of shares that are cancelled, forfeited or undelivered. Shares of Stock delivered
under the Plan shall consist of 

  
 9 

 
authorized and unissued shares or previously issued shares of Stock reacquired by the Company on the open market or by private purchase. Notwithstanding any other provision of the Plan to the
contrary, the maximum aggregate number of shares of Stock that may be issued under the Plan pursuant to Incentive Stock Options is 188,232, subject to adjustment as provided in Section 11 hereof. 

(b) Share Counting Rules. The Committee may adopt reasonable counting procedures to ensure appropriate counting, avoid double-counting
(as, for example, in the case of tandem or substitute Awards) and make adjustments if the number of shares of Stock actually delivered differs from the number of shares previously counted in connection with an Award. To the extent that an Award
expires or is canceled, forfeited, settled in cash, or otherwise terminated without delivery to the Participant of the full number of shares of Stock to which the Award related, the undelivered shares will again be available for delivery under the
Plan. Shares withheld in payment of the exercise price or taxes relating to an Award and shares equal to the number surrendered in payment of any exercise price or taxes relating to an Award shall not be deemed to constitute shares delivered to the
Participant and shall be deemed to again be available for delivery under the Plan. 
  

	 	5.	OPTIONS. 

 (a) General. Nonstatutory Stock Options may be granted
to Eligible Persons, Incentive Stock Options may be granted only to employees of the Company or any Parent or Subsidiary of the Company. Options may be granted in such form and having such terms and conditions as the Committee shall deem
appropriate. The provisions of Options shall be set forth in Option Agreements, which agreements need not be identical. 
 (b) Term.
The term of each Option shall be set by the Committee at the time of grant; provided, however, that no Option granted hereunder shall be exercisable after, and each Option shall expire, ten (10) years from the date it was granted. In the
case of an Incentive Stock Option granted to a Participant who, at the time the Incentive Stock Option is granted, owns (or is treated as owning under Section 424 of the Code) stock representing more than ten percent (10%) of the total combined
voting power of all classes of stock of the Company (or any Parent or Subsidiary of the Company), the term of the Incentive Stock Option will be five (5) years from the date of grant or such shorter term as may be provided in the Option
Agreement. 
 (c) Exercise Price. The exercise price per share of Stock for each Option shall be set by the Committee at the time of
grant; provided, however, that if an Option is intended to qualify as a “stock right” that does not provide for a “deferral of compensation” within the meaning of Section 409A of the Code, then the applicable exercise
price shall not be less than the Fair Market Value on the date of grant. In addition, in the case of an Incentive Stock Option granted to a Participant who, at the time the Incentive Stock Option is granted, owns (or is treated as owning under
Section 424 of the Code) stock representing more than ten percent (10%) of the total combined voting power of all classes of stock of the Company (or any Parent or Subsidiary of the Company), the applicable exercise price shall not be less than
one hundred ten percent (110%) of the Fair Market Value on the date of grant. Notwithstanding the foregoing provisions of this Section 5(c), Options may be granted with an exercise price of less than one hundred percent (100%) of the Fair
Market Value on the date of grant pursuant to a transaction described in, and in a manner consistent with, Section 424(a) of the Code. 

  
 10 

 (d) Payment for Stock. Payment for shares of Stock acquired pursuant to an Option granted
hereunder shall be made in full upon exercise of the Option in a manner approved by the Committee, which may include any of the following payment methods: (1) in immediately available funds in United States dollars, or by certified or bank
cashier’s check, (2) by delivery of a notice of “net exercise” to the Company, pursuant to which the Participant shall receive the number of shares of Stock underlying the Option so exercised reduced by the number of shares of
Stock equal to the aggregate exercise price of the Option divided by the Fair Market Value on the date of exercise, (3) by delivery of shares of Stock having a Fair Market Value equal to the exercise price, or (4) by any other means
approved by the Committee. Anything herein to the contrary notwithstanding, if the Committee determines that any form of payment available hereunder would be in violation of Section 402 of the Sarbanes-Oxley Act of 2002, such form of payment
shall not be available on or following the date on which the Company (or any of its affiliates) files an initial registration statement for an IPO. 

(e) Vesting. Options shall vest and become exercisable in such manner, on such date or dates, or upon the achievement of performance or
other conditions, in each case, as may be determined by the Committee and set forth in an Option Agreement; provided, however, that notwithstanding any such vesting dates, the Committee may in its sole discretion accelerate the vesting of any
Option at any time and for any reason. Unless otherwise specifically determined by the Committee, the vesting of an Option shall occur only while the Participant is employed by or rendering services to the Service Recipient, and all vesting shall
cease upon the Termination of a Participant for any reason. Notwithstanding the foregoing, the Committee may provide in the Option Agreement that the Participant may elect to exercise all or a portion of an Option before it has otherwise become
exercisable; provided, however, that any shares of Stock so purchased shall be Restricted Stock and shall be subject to (x) a repurchase in favor of the Company during a specified restricted period, with the repurchase price equal to the
lesser of (i) the original purchase price paid for such Stock and (ii) the Fair Market Value of the Stock at the time of repurchase, and (y) such other restrictions as the Committee deems appropriate. 

(f) Transferability of Options. Except in connection with a Permitted Transfer of vested Options, an Option shall not be transferable
except by will or by the laws of descent and distribution and shall be exercisable during the lifetime of the Participant only by the Participant. To the extent that a Participant wishes to make a Permitted Transfer of vested Options, it shall be a
condition of each such Permitted Transfer that (1) the transferee agrees to be bound by the terms of the Plan and the applicable Option Agreement as though no such transfer had taken place, and (2) the Participant has complied with all
applicable law in connection with such transfer. The Participant and the transferee shall execute any documents reasonably required by the Committee to effectuate such Permitted Transfer. 

(g) Termination of Employment or Service. Except as provided by the Committee in an Option Agreement or otherwise: 

(1) In the event of the Termination of a Participant prior to the Expiration Date for any reason other than (A) by the
Service Recipient for Cause or 

  
 11 

 
(B) by reason of the Participant’s death or Disability, (i) all vesting with respect to such Participant’s Options shall cease, (ii) all of such Participant’s unvested
Options shall terminate as of the date of such Termination, and (iii) each of such Participant’s vested Options shall terminate on the earlier of the applicable Expiration Date and the date that is ninety (90) days after the date of
such Termination. 
 (2) In the event of the Termination of a Participant prior to the Expiration Date by reason of such
Participant’s death or Disability, (A) all vesting with respect to such Participant’s Options shall cease, (B) all of such Participant’s unvested Options shall terminate as of the date of such Termination, and (C) each
of such Participant’s vested Options shall terminate on the earlier of the applicable Expiration Date and the date that is twelve (12) months after the date of such Termination. In the event of a Participant’s death, such
Participant’s Options shall remain exercisable by the person or persons to whom a Participant’s rights under the Options pass by will or by the applicable laws of descent and distribution until the applicable Expiration Date, but only to
the extent that the Options were vested at the time of such Termination. 
 (3) In the event of the Termination of a
Participant prior to the Expiration Date by the Service Recipient for Cause, all of such Participant’s Options (whether or not vested) shall immediately terminate as of the date of such Termination. 

(h) Incentive Stock Option Limitations. Each Option will be designated in the Option Agreement as either an Incentive Stock Option or a
Nonstatutory Stock Option. Notwithstanding such designation, however, to the extent that the aggregate Fair Market Value (determined as of the time of grant) of the shares of Stock with respect to which Incentive Stock Options are exercisable for
the first time by the Participant during any calendar year (under the Plan and/or any other stock option plan of the Company or any Parent or Subsidiary of the Company) exceeds one hundred thousand dollars ($100,000), such Options will be treated as
Nonstatutory Stock Options. For purposes of this Section 5(h), Incentive Stock Options will be taken into account in the order in which they were granted, the Fair Market Value of the shares will be determined as of the time the Option with
respect to such shares is granted, and such calculations will be performed in accordance with Section 422 of the Code. In addition, if an Eligible Person does not remain employed by the Company or any Parent or Subsidiary of the Company at all
times from the time an Incentive Stock Option is granted until three months prior to the date of exercise thereof (or such other period as required by applicable law), such Option shall be treated as a Nonstatutory Stock Option. Neither the Company
nor the Committee shall have any liability to a Participant or any other party, (1) if an Option (or any part thereof) which is intended to qualify as an Incentive Stock Option fails to qualify as an Incentive Stock Option or (2) for any
action or omission by the Committee that causes an Option not to qualify as an Incentive Stock Option, including without limitation, the conversion of an Incentive Stock Option to a Nonstatutory Stock Option or the grant of an Option intended as an
Incentive Stock Option that fails to satisfy the requirements under the Code applicable to an Incentive Stock Option. 

  
 12 

	 	6.	RESTRICTED STOCK. 

 (a) General. Restricted Stock
may be granted to Eligible Persons in such form and having such terms and conditions as the Committee shall deem appropriate. The provisions of separate Awards of Restricted Stock shall be set forth in separate Restricted Stock Agreements, which
agreements need not be identical. Subject to the restrictions set forth in Section 6(b) hereof, and except as otherwise set forth in the applicable Restricted Stock Agreement, the Participant shall generally have the rights and privileges of a
stockholder as to such Restricted Stock, including the right to vote such Restricted Stock. Unless otherwise set forth in a Participant’s Restricted Stock Agreement, cash dividends and stock dividends, if any, with respect to the Restricted
Stock shall be withheld by the Company for the Participant’s account, and shall be subject to forfeiture to the same degree as the shares of Restricted Stock to which such dividends relate. Except as otherwise determined by the Committee, no
interest will accrue or be paid on the amount of any cash dividends withheld. 
 (b) Vesting and Restrictions on Transfer. Restricted
Stock shall vest in such manner, on such date or dates, or upon the achievement of performance or other conditions, in each case as may be determined by the Committee and set forth in a Restricted Stock Agreement; provided, however, that
notwithstanding any such vesting dates, the Committee may in its sole discretion accelerate the vesting of any Award of Restricted Stock at any time and for any reason. Unless otherwise specifically determined by the Committee, the vesting of an
Award of Restricted Stock shall occur only while the Participant is employed by or rendering services to the Service Recipient, and all vesting shall cease upon the Termination of a Participant for any reason. In addition to any other restrictions
set forth in a Participant’s Restricted Stock Agreement, the Participant shall not be permitted to sell, transfer, pledge, or otherwise encumber the Restricted Stock prior to the time the Restricted Stock has vested pursuant to the terms of the
Restricted Stock Agreement. 
 (c) Termination of Employment or Service. Except as provided by the Committee in a Restricted Stock
Agreement or otherwise, in the event of the Termination of a Participant for any reason prior to the time that such Participant’s Restricted Stock has vested, (i) all vesting with respect to such Participant’s Restricted Stock shall
cease, and (ii) as soon as practicable following such Termination, the Company shall repurchase from the Participant, and the Participant shall sell, all of such Participant’s unvested shares of Restricted Stock at a purchase price equal
to the original purchase price paid for the Restricted Stock; provided that, if the original purchase price paid for the Restricted Stock is equal to zero dollars ($0), such unvested shares of Restricted Stock shall be forfeited to the Company by
the Participant for no consideration as of the date of such Termination. 
  

	 	7.	OTHER STOCK-BASED AWARDS. 

The Committee is authorized, subject to limitations under applicable law, to grant to Participants such other Awards that may be denominated or
payable in, valued in whole or in part by reference to, or otherwise based upon, or related to, Stock, as deemed by the Committee to be consistent with the purposes of the Plan. The Committee may also grant Stock as a bonus (whether or not subject
to any vesting requirements or other restrictions on transfer), and may grant other awards in lieu of obligations of any member of the Company Group to pay cash or 

  
 13 

 
deliver other property under the Plan or under other plans or compensatory arrangements, subject to such terms as shall be determined by the Committee. The terms and conditions applicable to such
Awards shall be determined by the Committee and evidenced by Award Agreements, which agreements need not be identical. 
  

	 	8.	RESTRICTIONS ON STOCK; PROXY. 

(a) Prohibition on Transfers. Except (1) as otherwise approved by the Committee, (2) pursuant to subsection (b), (c) or
(d) of this Section 8, or (3) pursuant to Section 9 hereof, shares of Stock acquired by a Participant pursuant to the issuance, vesting, exercise, or settlement of any Award granted hereunder may not be sold, transferred, hedged,
pledged or otherwise disposed of prior to the six (6) month anniversary following the IPO Date (the “Lock-Up Period”). If requested by the underwriters managing any public offering, each
Participant shall execute a separate agreement to the foregoing effect. The Company may impose stop-transfer instructions with respect to the Stock (or securities) subject to the foregoing restriction until the end of such Lock-Up Period. 
 (b) Drag-Along Rights. 

(1) If at any time and from time to time, the Investors desire to (A) sell at least a majority of the Company Securities
beneficially owned by them to one or more third parties, (B) approve any merger, amalgamation, or consolidation of the Company with or into one or more third parties, or (C) approve any sale of all or substantially all of the
Company’s assets to one or more third parties, the Investors shall have the right (the “Drag-Along Right”), but not the obligation, to require each Participant (x) in the case of a transfer of the type referred to in
clause (A), to sell in such sale, in accordance with the terms set forth herein, an equivalent percentage of such Participant’s shares of Stock received in connection with Awards granted hereunder (the “Subject Shares”) for the
Per Share Drag-Along Purchase Price (as defined below), or (y) in the case of a merger, amalgamation, or consolidation or sale of assets or other transaction, referred to in clause (B) or (C), to vote (or act by written consent with
respect to) all of such Participant’s Subject Shares in favor of such transaction and to waive any dissenters’ rights, appraisal rights, or similar rights that such Participant may have under applicable law. Each Participant agrees to take
all steps necessary to enable such Participant to comply with the provisions of this Section 8(b) to facilitate the Investors’ exercise of a Drag-Along Right. As used herein, “Per Share Drag-Along Purchase Price” means the same
consideration per share of Stock as is received by the Investors with respect to their shares of Company Securities in the proposed transaction, including equivalent rights to receive (when and if paid) a proportionate share of any deferred
consideration, earn-out, or escrow funds that may become available to the Investors in connection with such transaction (less, in the case of Options, warrants, or other convertible securities, the exercise or
purchase price thereof and less any applicable employment taxes or withholding obligations); provided, however, that if the Company Securities include preferred stock of the Company, such
per-share price shall be calculated based upon the implied equity value of each share of Stock (less, in the case of Options, warrants, or other convertible securities, the exercise or purchase price thereof)
determined by reference to the per-share price being paid for the preferred stock and after giving effect 

  
 14 

 
to all amounts payable to the holders of preferred stock prior and in preference to the Stock pursuant to the liquidation preference provisions of the Company’s certificate of incorporation
or other applicable organizational documents; provided, further, that if the per-share price being paid for such preferred stock includes any rights to receive a proportionate share of any
deferred consideration, earn-out, or escrow funds that may become available to the holders of preferred stock in connection with the transaction, such amounts shall be considered when determining the implied
equity price of each share of Stock, but any portion of such amount included in the implied equity price of each share of Stock shall not be paid to Participants required to sell Subject Shares pursuant to this Section 8(b) unless and until the
portions of such amount included in the price per share being paid for the preferred stock are paid to the holders of the preferred stock and only to the extent that the holders of the preferred stock have received all amounts payable to the holders
of preferred stock prior and in preference to the Stock pursuant to the liquidation preference provisions of the Company’s certificate of incorporation. 

(2) To exercise the rights granted under this Section 8(b), the Investors shall give each Participant a written notice (a
“Drag-Along Notice”) containing the proposed Per Share Drag-Along Purchase Price with respect to the Subject Shares and the terms of payment and other material terms and conditions of the offer of the proposed transferee(s). Each
Participant shall thereafter be obligated to sell his or her Subject Shares to the proposed transferee(s) or vote (or act by written consent with respect to) his or her Subject Shares in favor of the proposed transaction, as the case may be, in
accordance with Section 8(b)(1) hereof. 
 (3) Each Participant shall execute and deliver such instruments of conveyance
and transfer and take such other actions, including executing any purchase agreement, merger agreement, amalgamation agreement, consolidation agreement, indemnity agreement, escrow agreement, or related documents, as may be reasonably required by
the Investors or the Company in order to carry out the terms and provisions of this Section 8(b). Without limiting the foregoing, in the event that the Investors, in connection with the transaction contemplated by such Drag-Along Right, appoint
a stockholder representative (the “Stockholder Representative”) under the applicable definitive transaction agreements, each Participant shall, (x) consent to (i) the appointment of such Stockholder Representative,
(ii) the establishment of any applicable escrow, expense or similar fund in connection with any indemnification or similar obligations, and (iii) the payment of such Participation’s pro rata portion (from the applicable escrow or
expense fund or otherwise) of any and all reasonable fees and expenses to such Stockholder Representative in connection with such Stockholder Representative’s services and duties in connection with such transaction and its related service as
the representative of the stockholders, and (y) agree to not assert any claim or commence any suit against the Stockholder Representative or any other stockholder with respect to any action or inaction taken or failed to be taken by the
Stockholder Representative in connection with its service as the Stockholder Representative, absent fraud or willful misconduct. 

  
 15 

 (4) Each Participant acknowledges the rights of the Investors to act on behalf of
such Participant pursuant to Section 8(b). At the closing of the proposed transaction, each such Participant shall deliver, against receipt of the consideration payable in such transaction, certificates representing the Subject Shares,
together with executed stock powers or other instruments of transfer acceptable to the Investors and the transferee of such Subject Shares. 

(5) Notwithstanding anything contained in this Section 8(b), in the event that all or a portion of the purchase price for
the Subject Shares being purchased consists of securities, and the sale of such securities to a Participant would require either a registration under the Securities Act or the preparation of a disclosure document pursuant to Regulation D under the
Securities Act (or any successor regulation) or any similar requirement under similar provision of any state or non–United States securities law, then, at the option of the Investors, such Participants may proportionately receive, in lieu of
such securities, the Fair Market Value of some or all of such securities in cash, as determined in good faith by the Board. 

(6) The rights provided in this Section 8(b) shall expire upon the IPO Date. 

(c) Permitted Transfers. Stock acquired upon issuance, vesting, exercise, or settlement of an Award may be transferred in connection
with a Permitted Transfer; provided, however, that it shall be a condition of each such Permitted Transfer that (1) the transferee agrees to be bound by the terms of the Plan and the applicable Award Agreement as though no such transfer
had taken place, and (2) the Participant has complied with all applicable laws in connection with such transfer. The Participant and the transferee shall execute any documents reasonably required by the Committee to effectuate such Permitted
Transfer. 
 (d) Right of First Refusal. Any shares of Stock acquired by a Participant pursuant to the issuance, vesting, exercise,
or settlement of any Award granted hereunder may be sold or transferred prior to the IPO Date, provided that, such shares shall first be offered to the Company as follows (the “Right of First Refusal”): 

(1) The Participant shall promptly deliver a notice (“Notice”) to the Company stating (i) the
Participant’s bona fide intention to sell or transfer such shares of Stock, (ii) the number of such shares of Stock to be sold or transferred, and the basic terms and conditions of such sale or transfer, (iii) the price for which the
Participant proposes to sell or transfer such shares of Stock, (iv) the name of the proposed purchaser or transferee, and (v) proof satisfactory to the Company that the proposed sale or transfer will not violate any applicable U.S.
federal, state or foreign securities laws. The Notice shall be signed by both the Participant and the proposed purchaser or transferee and must constitute a binding commitment subject to the Company’s Right of First Refusal as set forth herein.

 (2) Within thirty (30) days after receipt of the Notice, the Company may elect to purchase all or any portion of the
shares of Stock to which the Notice refers, at the price per share specified in the Notice. If the Company elects not to purchase all or 

  
 16 

 
any portion of the shares of Stock, the Company may assign its right to purchase all or any portion of the shares of Stock. The assignees may elect within thirty (30) days after receipt by
the Company of the Notice to purchase all or any portion of the shares of Stock to which the Notice refers, at the price per share of Stock specified in the Notice. An election to purchase shall be made by written notice to the Participant. Payment
for shares of Stock purchased pursuant to this Section 8(d) shall be made within thirty (30) days after receipt by the Company of the Notice and, at the option of the Company, may be made by cancellation of all or a portion of outstanding
indebtedness, if any, or in cash or both. 
 (3) If all or any portion of the shares of Stock to which the Notice refers are
not elected to be purchased, as provided in Section 8(d)(2), the Participant may sell those shares of Stock to any person named in the Notice at the price specified in the Notice, provided that such sale or transfer complies with
Section 8(d)(7) hereof and is consummated within sixty (60) days of the date of said Notice to the Company, and provided, further, that any such sale is made in compliance with applicable U.S. federal, state and foreign securities laws and
not in violation of any other contractual restrictions to which the Participant is bound. The third-party purchaser shall be bound by, and shall acquire the shares of Stock subject to, the provisions of this Plan and the applicable Award Agreement
as though no such transfer had taken place, including the Company’s Drag-Along Rights, Right of First Refusal and Repurchase Right. 

(4) Any proposed transfer on terms and conditions different from those set forth in the Notice, as well as any subsequent
proposed transfer shall again be subject to the Company’s Right of First Refusal and shall require compliance with the procedures described in this Section 8(d). 

(5) The Participant agrees to cooperate affirmatively with the Company, to the extent reasonably requested by the Company, to
enforce rights and obligations pursuant to this Plan. 
 (6) Notwithstanding the above, neither the Company nor any assignee
of the Company under this Section 8(d) shall have any right under this Section 8(d) at any time subsequent to the IPO Date. 

(7) The Company may object to the proposed transfer of the Participant’s shares of Stock to a proposed purchaser or
transferee for the following reasons: (i) the Participant’s sale will be to a direct competitor of the Company or to any of its shareholders; or (ii) the proposed transfer will jeopardize or compromise the Company’s position with
regard to any existing or proposed agreements or contracts or renewals thereof. 
 (8) This Section 8(d) shall not apply
to any Permitted Transfer. 
 (e) Grant of Irrevocable Proxy. As a condition of the grant of any Award under the Plan, each
Participant shall grant to the Investors, acting jointly, the Participant’s irrevocable proxy, and appoint the Investors, or any designee or nominee of the Investors, as the 

  
 17 

 
Participant’s attorney-in-fact (with full power of substitution and resubstitution), for and in his or her
name, place, and stead, to (1) vote or act by written consent with respect to the Subject Shares (whether or not vested) now or hereafter owned by the Participant (or any transferee), including the right to sign such Participant’s name, as
a stockholder, to any consent, certificate, or other document relating to the Company that applicable law may require, in connection with any and all matters (other than any amendment to the Plan that would require stockholder approval), including,
without limitation, the election of directors and the sale or transfer of any Subject Shares as contemplated by this Section 8, and (2) take any and all action necessary to sell or otherwise transfer any Subject Shares as contemplated by
this Section 8. Such proxy shall be coupled with an interest, and the Participant will take such further action or execute such other instruments as may be necessary to effectuate the intent of this proxy. In the event that any or all
provisions of this Section 8(d) are determined to be unenforceable, each Participant shall grant a proxy that, to the fullest extent permitted by applicable law, preserves the intent of and provides the Investors with substantially the same
benefits of this Section 8(d). The proxy described in this subsection (d) shall terminate upon the IPO Date. 
 (f)
Stockholders’ or Similar Agreement. Except as provided by the Committee in an Award Agreement or otherwise, in the event that a Participant is a party to any stockholders’ or similar agreement with the Company and/or the Investors
containing similar provisions to those set forth in this Section 8, the provisions of this Section 8 shall continue to apply to such Participant and any shares of Stock acquired pursuant to any Award hereunder, and shall be in addition to,
and not in lieu of, the terms and conditions of such stockholders’ or similar agreement. 
  

	 	9.	REPURCHASE RIGHTS UPON TERMINATION. 

(a) Company Repurchase Right. If, prior to the Repurchase Right Lapse Date, a Participant undergoes a Termination with the Service
Recipient for any reason, then at any time during the Repurchase Right Exercise Period, in addition to any repurchase right or obligation of the Company with respect to unvested shares of Restricted Stock as provided in Section 6 hereof, the
Company shall have the right to repurchase the shares of Stock and Stock Equivalents received by the Participant pursuant to Awards granted hereunder at a per-share price equal to the Repurchase Price (the
“Repurchase Right”). The Repurchase Right shall be exercisable upon written notice to the Participant indicating the number of shares of Stock and/or Stock Equivalents to be repurchased and the date on which the repurchase is to be
effected, such date to be not more than thirty (30) days after the date of such notice; provided, however, that except in extraordinary circumstances, as determined by the Committee, the Company shall not exercise the Repurchase Right
with respect to Stock acquired pursuant to an Award or Stock Equivalents prior to (1) the six (6) month anniversary of the date an Award not subject to exercise or deferred settlement vests or (2) the six (6) month anniversary of
the date an Award that is subject to exercise or deferred settlement is exercised or settled. To the extent not otherwise held in book entry form by the Company, the certificates representing the shares of Stock and/or Stock Equivalents to be
repurchased shall be delivered to the Company prior to the close of business on the date specified for the repurchase. 

  
 18 

 (b) Payment of Repurchase Price. 

(1) If the Company exercises the Repurchase Right following the Termination of a Participant other than by the Service
Recipient for Cause, the aggregate Repurchase Price shall be paid in a lump sum at the time of repurchase. 
 (2) If the
Company exercises the Repurchase Right following the Termination of a Participant by the Service Recipient for Cause, the Company shall be permitted to issue a promissory note equal to the aggregate Repurchase Price in lieu of a cash payment;
provided, however, that such promissory note shall have a maturity date that does not exceed three (3) years from the date of such repurchase, shall bear simple interest of not less than the Prime Rate in effect on the date of such
repurchase, and shall be payable as to interest in equal monthly installments during the term of the note and as to principal on the maturity date. 

(c) Delay of Repurchase. Notwithstanding anything contained in this Section 9 to the contrary, in the event that any repurchase
described herein would result in a default under any applicable financing documents of any member of the Company Group, or would otherwise be prohibited by applicable law (as applicable, a “Prohibition Event”), commencement of the
applicable Repurchase Right Exercise Period shall be delayed until the Prohibition Event ceases to exist, but in no event shall such delay extend for more than eighteen (18) months. Without limiting the foregoing, at any time prior to the
Repurchase Right Lapse Date, the Company shall be permitted to assign the Repurchase Right to the Investors. 
 (d) Participant
Representations. In connection with any repurchase of shares of Stock or Stock Equivalents pursuant to this Section 9, the Company will be entitled to receive customary representations and warranties from the Participant regarding the
repurchase of such shares of Stock or Stock Equivalents as may be reasonably requested by the Company, including, but not limited to, the representation that the Participant has good and marketable title to such shares of Stock or Stock Equivalents
to be transferred free and clear of all liens, claims, and other encumbrances. 
  

	 	10.	COMPETITIVE ACTIVITIES. 

 Notwithstanding anything
contained in the Plan to the contrary and to the extent permitted by applicable law, except as otherwise provided by the Committee in an Award Agreement or otherwise, in the event that a Participant engages in any Competitive Activity during the
term of such Participant’s employment or service with the Service Recipient or during the six (6) month period following the Termination of such Participant for any reason, the Committee may determine, in its sole discretion, to
(a) require all Awards held by such Participant to be immediately forfeited and returned to the Company without additional consideration, (b) require all shares of Stock acquired upon the issuance, vesting, exercise, or settlement of
Awards within the twelve (12) month period prior to the date of such Competitive Activity to be immediately forfeited and returned to the Company without additional consideration, and (c) to the extent that such Participant received any
profit from the sale of any Stock underlying an Award within the twelve (12) month period prior to the date of such Competitive Activity, require that such Participant promptly repay to the Company any profit received pursuant to such sale.

  
 19 

	 	11.	ADJUSTMENT FOR RECAPITALIZATION, MERGER, ETC. 

(a) Capitalization Adjustments. The aggregate number of shares of Stock that may be delivered in connection with Awards (as set forth in
Section 4 hereof), the number of shares of Stock covered by each outstanding Award, and the price per share of Stock underlying each such Award shall be equitably and proportionally adjusted or substituted, as determined by the Committee, as to
the number, price, or kind of a share of Stock or other consideration subject to such Awards (1) in the event of changes in the outstanding Stock or in the capital structure of the Company by reason of stock dividends, stock splits, reverse
stock splits, recapitalizations, reorganizations, mergers, amalgamations, consolidations, combinations, exchanges, or other relevant changes in capitalization occurring after the date of grant of any such Award (including any Corporate Event); (2)
in connection with any extraordinary dividend declared and paid in respect of shares of Stock, whether payable in the form of cash, stock, or any other form of consideration; or (3) in the event of any change in applicable laws or circumstances
that results in or could result in, in either case, as determined by the Committee in its sole discretion, any substantial dilution or enlargement of the rights intended to be granted to, or available for, Participants in the Plan. In no event shall
any adjustments be made in connection with the conversion of one or more outstanding shares of preferred stock of the Company into shares of Stock. 

(b) Corporate Events. Notwithstanding the foregoing, except as provided by the Committee in an Award Agreement or otherwise, in
connection with (1) a merger, amalgamation, or consolidation involving the Company in which the Company is not the surviving corporation, (2) a merger, amalgamation, or consolidation involving the Company in which the Company is the
surviving corporation but the holders of shares of Stock receive securities of another corporation or other property or cash, (3) a Change in Control, or (4) the reorganization or liquidation of the Company (each, a “Corporate
Event”), the Committee may, in its discretion, provide for any one or more of the following: 
 (1) The assumption
or substitution of any or all Awards in connection with such Corporate Event, in which case the Awards shall be subject to the adjustment set forth in subsection (a) above, and to the extent that such Awards vest subject to the achievement of
performance objectives or criteria, such objectives or criteria shall be adjusted appropriately to reflect the Corporate Event; 

(2) The acceleration of vesting of any or all Awards, subject to the consummation of such Corporate Event; 

(3) The cancellation of any or all Awards (whether vested or unvested) as of the consummation of such Corporate Event, together
with the payment to the Participants holding vested Awards (including any Awards that would vest upon the Corporate Event but for such cancellation) so canceled of an amount in respect of cancellation based upon the
per-share consideration being paid for the Stock in connection with such Corporate Event, less, in the case of Options and other Awards subject to exercise, the applicable exercise price; provided,
however, that holders of Options and other Awards subject to exercise shall be entitled to consideration in respect of cancellation of such Awards only if the per-share consideration less the applicable
exercise price is greater than zero dollars ($0), and to the extent that the per-share consideration is less than or equal to the applicable exercise price, such Awards shall be canceled for no consideration;

  
 20 

 (4) The cancellation of any or all Options and other Awards subject to exercise
(whether vested or unvested) as of the consummation of such Corporate Event; provided, that, all Options and other Awards to be so cancelled pursuant to this paragraph (4) shall first become exercisable for a period of at least ten
(10) days prior to such Corporate Event, with any exercise during such period of any unvested Options or other Awards to be (A) contingent upon and subject to the occurrence of the Corporate Event, and (B) effectuated by such means as
are approved by the Committee; and 
 (5) The replacement of any or all Awards (other than Awards that are intended to
qualify as “stock rights” that do not provide for a “deferral of compensation” within the meaning of Section 409A of the Code) with a cash incentive program that preserves the value of the Awards so replaced (determined as
of the consummation of the Corporate Event), with subsequent payment of cash incentives subject to the same vesting conditions as applicable to the Awards so replaced and payment to be made within thirty (30) days of the applicable vesting
date. 
 Payments to holders pursuant to paragraph (3) above shall be made in cash or, in the sole discretion of the Committee, in the form of such
other consideration necessary for a Participant to receive property, cash, or securities (or a combination thereof) as such Participant would have been entitled to receive upon the occurrence of the transaction if the Participant had been,
immediately prior to such transaction, the holder of the number of shares of Stock covered by the Award at such time (less any applicable exercise price). In addition, in connection with any Corporate Event, prior to any payment or adjustment
contemplated under this subsection (b), the Committee may require a Participant to (A) represent and warrant as to the unencumbered title to his or her Awards, (B) bear such Participant’s
pro-rata share of any post-closing indemnity obligations and be subject to the same post-closing purchase price adjustments, escrow terms, offset rights, holdback terms, and similar conditions as the other
holders of Stock, and (C) deliver customary transfer documentation as reasonably determined by the Committee. 
 The Committee need not take the same
action or actions with respect to all Awards or portions thereof or with respect to all Participants. The Committee may take different actions with respect to the vested and unvested portions of an Award. 

(c) Fractional Shares. Any adjustment provided under this Section 11 may, in the Committee’s discretion, provide for the
elimination of any fractional share that might otherwise become subject to an Award. 
  

	 	12.	SECTION 280G OF THE CODE; STOCKHOLDER APPROVAL. 

Notwithstanding anything herein to the contrary, unless the Section 280G Approval has been obtained, if in connection with a Qualifying
Transaction a Participant becomes entitled to benefits under the Plan (including, but not limited to, with respect to any vesting, settlement, or payment of an Award) that would result in a “parachute payment” (as defined in

  
 21 

 
Section 280G(b)(2) of the Code), after taking into account any other payments in the nature of compensation that a Participant would have a right to receive from the Company and any other
“person” (as defined in Section 3(a)(9) of the Exchange Act) that are contingent upon such Qualifying Transaction (collectively, the “280G Payments”) and such 280G Payments will be subject to the tax (the
“Excise Tax”) imposed by Section 4999 of the Code, the Company shall pay to the Participant the greatest of the following, whichever gives the Participant the highest net after-tax amount
(after taking into account federal, state, local and social security taxes at the maximum marginal rates (including the Excise Tax)): (x) the full value of such 280G Payments or (y) one dollar less than the amount of any 280G Payments that
would subject the Participant to the Excise Tax. 
 Prior to the occurrence of a Qualifying Transaction, the Company shall use its
commercially reasonable best efforts to submit to stockholders for Section 280G Approval the acceleration of vesting, settlement, or payments that would not occur pursuant to the previous sentence absent such Section 280G Approval. 

 

	 	13.	USE OF PROCEEDS. 

 The proceeds received
from the sale of Stock pursuant to the Plan shall be used for general corporate purposes. 
  

	 	14.	RIGHTS AND PRIVILEGES AS A STOCKHOLDER. 

Except as otherwise specifically provided in the Plan, no person shall be entitled to the rights and privileges of Stock ownership in respect
of shares of Stock that are subject to Awards hereunder until such shares have been issued to that person. 
  

	 	15.	EMPLOYMENT OR SERVICE RIGHTS. 

No individual shall have any claim or right to be granted an Award under the Plan or, having been selected for the grant of an Award, to be
selected for the grant of any other Award. Neither the Plan nor any action taken hereunder shall be construed as giving any individual any right to be retained in the employ or service of any member of the Company Group. 

 

	 	16.	COMPLIANCE WITH LAWS. 

 (a) Delivery of
shares of Stock. The obligation of the Company to deliver Stock upon issuance, vesting, exercise, or settlement of any Award shall be subject to all applicable laws, rules, and regulations, and to such approvals by governmental agencies as may
be required. Notwithstanding any terms or conditions of any Award to the contrary, the Company shall be under no obligation to offer to sell or to sell, and shall be prohibited from offering to sell or selling, any shares of Stock pursuant to an
Award unless such shares have been properly registered for sale with the Securities and Exchange Commission pursuant to the Securities Act (or with a similar non–United States regulatory agency pursuant to a similar law or regulation) or unless
the Company has received an opinion of counsel, satisfactory to the Company, that such shares may be offered or sold without such registration pursuant to an available exemption therefrom and the terms and conditions of such exemption have been
fully complied with. The Company shall be under no obligation to register for sale or resale under the 

  
 22 

 
Securities Act any of the shares of Stock to be offered or sold under the Plan or any shares of Stock to be issued upon exercise or settlement of Awards. If the shares of Stock offered for sale
or sold under the Plan are offered or sold pursuant to an exemption from registration under the Securities Act, the Company may restrict the transfer of such shares and may legend the Stock certificates representing such shares in such manner as it
deems advisable to ensure the availability of any such exemption. 
 (b) Investment Assurances. The Committee may require a
Participant, as a condition of exercising or acquiring Stock under any Award, (1) to give written assurances satisfactory to the Committee as to the Participant’s knowledge and experience in financial and business matters and/or to employ
a purchaser representative reasonably satisfactory to the Committee who is knowledgeable and experienced in financial and business matters and that he or she is capable of evaluating, alone or together with the purchaser representative, the merits
and risks of exercising the Award; and (2) to give written assurances satisfactory to the Committee stating that the Participant is acquiring Stock subject to the Award for the Participant’s own account and not with any present intention
of selling or otherwise distributing the Stock. The foregoing requirements, and any assurances given pursuant to such requirements, will be inoperative (A) following the IPO Date, or (B) if, as to any particular requirement, a
determination is made by counsel for the Company that such requirement need not be met in the circumstances under the then applicable securities laws. 
  

	 	17.	WITHHOLDING OBLIGATIONS. 

 As a condition to
the issuance, vesting, exercise, or settlement of any Award, the Committee may require that a Participant satisfy, through deduction or withholding from any payment of any kind otherwise due to the Participant, or through such other arrangements as
are satisfactory to the Committee, the amount of all federal, state, and local income and other taxes of any kind required or permitted to be withheld in connection with such issuance, vesting, exercise, or settlement. The Committee, in its
discretion, may permit shares of Stock to be used to satisfy tax withholding requirements, and such shares shall be valued at their Fair Market Value as of the issuance, vesting, exercise, or settlement date of the Award, as applicable; provided,
however, that the aggregate Fair Market Value of the number of shares of Stock that may be used to satisfy tax withholding requirements may not exceed the minimum statutorily required withholding amount with respect to such Award. 

 

	 	18.	AMENDMENT OF THE PLAN OR AWARDS. 

(a) Amendment of Plan. The Board may amend the Plan at any time and from time to time. 

(b) Amendment of Awards. The Board or the Committee may amend the terms of any one or more Awards at any time and from time to time.

 (c) Addenda. The Board may approve such addenda to the Plan as it may consider necessary or appropriate for the purpose of granting
Awards to Eligible Persons, which Awards may contain such terms and conditions as the Board deems necessary or appropriate to accommodate differences in local law, tax policy or custom, which, if so required under

  
 23 

 
applicable laws, may deviate from the terms and conditions set forth in the Plan. The terms of any such addenda shall supersede the terms of the Plan to the extent necessary to accommodate such
differences but shall not otherwise affect the terms of the Plan as in effect for any other purpose. 
 (d) Stockholder Approval; No
Impairment. Notwithstanding anything herein to the contrary, no amendment to the Plan or any Award shall be effective without stockholder approval to the extent that such approval is required pursuant to applicable law or the applicable rules of
each national securities exchange on which the Stock is listed. Additionally, no amendment to the Plan or any Award shall materially and disproportionately impair a Participant’s rights under any Award unless the Participant consents in writing
(it being understood that no action taken by the Board or the Committee that is expressly permitted under the Plan, including, without limitation, any actions described in Section 11 hereof, shall constitute an amendment to the Plan or an Award
for such purpose). Notwithstanding the foregoing, subject to the limitations of applicable law, if any, and without an affected Participant’s consent, the Board or the Committee may amend the terms of the Plan or any one or more Awards from
time to time as necessary to bring such Awards into compliance with applicable law, including, without limitation, Section 409A of the Code. 

(e) Repricing of Awards Without Stockholder Approval. The repricing of Awards shall be expressly permitted without stockholder
approval. For this purpose, a “repricing” means any of the following (or any other action that has the same effect as any of the following): (1) changing the terms of an Award to lower its exercise price (other than on account of capital
adjustments resulting from share splits, etc., as described in Section 11(a) hereof), (2) any other action that is treated as a repricing under generally accepted accounting principles, and (3) repurchasing for cash or canceling an Award
in exchange for another Award at a time when its exercise price is greater than the Fair Market Value of the underlying Stock, unless the cancellation and exchange occurs in connection with an event set forth in Section 11(b) hereof. 

 

	 	19.	TERMINATION OR SUSPENSION OF THE PLAN. 

The Board may suspend or terminate the Plan at any time. Unless sooner terminated, the Plan shall terminate on the day before the tenth (10th) anniversary of the latest to occur of (a) the date the Plan is adopted by the Board, (b) the date the Plan is approved by the Company’s stockholders, to the extent applicable,
(c) the most recent date on which an increase to the number of shares of Stock reserved for issuance pursuant to Section 4(a) hereof is adopted by the Board, and (d) the most recent date on which an increase to the number of shares of
Stock reserved for issuance pursuant to Section 4(a) hereof is approved by the Company’s stockholders, to the extent applicable. No Awards may be granted under the Plan while the Plan is suspended or after it is terminated; provided,
however, that following any suspension or termination of the Plan, the Plan shall remain in effect for the purpose of governing all Awards then outstanding hereunder until such time as all Awards under the Plan have been terminated, forfeited,
or otherwise canceled, or earned, exercised, settled, or otherwise paid out in accordance with their terms. 

  
 24 

	 	20.	EFFECTIVE DATE OF THE PLAN. 

The Plan is effective as of the Effective Date. 
  

	 	21.	MISCELLANEOUS. 

 (a) Certificates. Stock acquired pursuant to
Awards granted under the Plan may be evidenced in such a manner as the Committee shall determine. If certificates representing Stock are registered in the name of the Participant, the Committee may require that (1) such certificates bear an
appropriate legend referring to the terms, conditions, and restrictions applicable to such Stock, (2) the Company retain physical possession of the certificates, and (3) the Participant deliver a stock power to the Company, endorsed in
blank, relating to the Stock. Notwithstanding the foregoing, unless otherwise determined by the Committee, in its sole discretion, the Stock shall be held in book-entry form rather than delivered to the Participant pending the release of any
applicable restrictions. 
 (b) Corporate Action Constituting Grant of Awards. Corporate action constituting a grant by the Company
of an Award to any Participant will be deemed completed as of the date of such corporate action, unless otherwise determined by the Committee, regardless of when the instrument, certificate, or letter evidencing the Award is communicated to, or
actually received or accepted by, the Participant. In the event that the corporate records (e.g., Committee consents, resolutions or minutes) documenting the corporate action constituting the grant contain terms (e.g., exercise price,
vesting schedule or number of shares of Stock) that are inconsistent with those in the Award Agreement as a result of a clerical error in connection with the preparation of the Award Agreement, the corporate records will control and the Participant
will have no legally binding right to the incorrect term in the Award Agreement. 
 (c) Clawback/Recoupment Policy. Notwithstanding
anything contained herein to the contrary, all Awards granted under the Plan shall be subject to any incentive compensation clawback or recoupment policy as may be adopted by the Board in connection with or following an IPO to comply with applicable
law or the rules and regulations of the stock exchange to which the Company is subject or which it is reasonably expected to become subject (including for this purpose proposed rules and regulations), as may be amended from time to time. No such
policy, adoption, or amendment shall in any event require the prior consent of any Participant. No recovery of compensation under such a clawback policy will be an event giving rise to a right to resign for “good reason” or
“constructive termination” (or similar term) under any agreement with any member of the Company Group. 
 (d) Participants
Outside of the United States. The Committee may modify the terms of any Award under the Plan made to or held by a Participant who is then a resident, or is primarily employed or providing services, outside of the United States in any manner
deemed by the Committee to be necessary or appropriate in order that such Award shall conform to laws, regulations, and customs of the country in which the Participant is then a resident or primarily employed or providing services, or so that the
value and other benefits of the Award to the Participant, as affected by non–United States tax laws and other restrictions applicable as a result of the Participant’s residence, employment, or providing services abroad, shall be comparable
to the value of such Award to a Participant who is a resident, or is primarily employed or providing 

  
 25 

 
services, in the United States. An Award may be modified under this Section 21(d) in a manner that is inconsistent with the express terms of the Plan, so long as such modifications will not
contravene any applicable law or regulation. Additionally, the Committee may adopt such procedures and sub-plans as are necessary or appropriate to permit participation in the Plan by Eligible Persons who are
non–United States nationals or are primarily employed or providing services outside the United States. 
 (e) Change in Time
Commitment. In the event a Participant’s regular level of time commitment in the performance of his or her services for the Company or any member of the Company Group is reduced (for example, and without limitation, if the Participant is an
employee of the Company and the employee has a change in status from a full-time employee to a part-time employee) after the date of grant of any Award to the Participant, the Committee has the right, in its sole discretion, to (i) make a
corresponding reduction in the number of shares of Stock subject to any portion of such Award that is scheduled to vest or become payable after the date of such change in time commitment, and (ii) in lieu of or in combination with such a
reduction, extend the vesting or payment schedule applicable to such Award. In the event of any such reduction, the Participant will have no right with respect to any portion of the Award that is so reduced or extended. 

(f) Electronic Delivery. Any reference herein to a “written” agreement or document will include any agreement or document
delivered electronically or posted on the Company’s intranet (or other shared electronic medium controlled by the Company to which the Participant has access). 

(g) Non-Exempt Employees. If an Option is granted to an employee of the Company Group in the
United States who is a non-exempt employee for purposes of the Fair Labor Standards Act of 1938, as amended, the Option will not be first exercisable for any shares of Stock until at least six (6) months
following the date of grant of the Option (although the Option may vest prior to such date). Consistent with the provisions of the Worker Economic Opportunity Act, (1) if such non-exempt employee of the
Company Group dies or suffers a Disability, (2) upon a Corporate Event in which such Option is not assumed, continued, or substituted, (3) upon a Change in Control, or (4) upon the Participant’s retirement (as such term may be
defined in the applicable Award Agreement or a Participant Agreement, or, if no such definition exists, in accordance with the Company’s then current employment policies and guidelines), the vested portion of any Options may be exercised
earlier than six (6) months following the date of grant. The foregoing provision is intended to operate so that any income derived by a non-exempt employee in connection with the exercise or vesting of an
Option will be exempt from his or her regular rate of pay. To the extent permitted and/or required for compliance with the Worker Economic Opportunity Act to ensure that any income derived by a non-exempt
employee in connection with the exercise, vesting or issuance of any shares under any other Award will be exempt from the employee’s regular rate of pay, the provisions of this Section 21(g) will apply to all Awards. 

(h) Data Privacy. As a condition of receipt of any Award, each Participant explicitly and unambiguously consents to the collection,
use, and transfer, in electronic or other form, of personal data as described in this subsection by and among, as applicable, the Company Group for the exclusive purpose of implementing, administering, and managing the Plan and

  
 26 

 
Awards and the Participant’s participation in the Plan. In furtherance of such implementation, administration, and management, the Company Group may hold certain personal information about a
Participant, including, but not limited to, the Participant’s name, home address, telephone number, date of birth, social security or insurance number or other identification number, salary, nationality, job title(s), information regarding any
securities of the Company Group held by such Participant, and details of all Awards (the “Data”). In addition to transferring the Data amongst themselves as necessary for the purpose of implementation, administration, and management
of a Participant’s participation in the Plan, each member of the Company Group may transfer the Data to any third parties assisting the Company in the implementation, administration, and management of the Plan and Awards and the
Participant’s participation in the Plan. Recipients of the Data may be located in the Participant’s country or elsewhere, and the Participant’s country and any given recipient’s country may have different data privacy laws and
protections. By accepting an Award, each Participant authorizes such recipients to receive, possess, use, retain, and transfer the Data, in electronic or other form, for the purposes of assisting the Company in the implementation, administration,
and management of the Plan and Awards and such Participant’s participation in the Plan, including any requisite transfer of such Data as may be required to a broker or other third party with whom the Company or the Participant may elect to
deposit any shares of Stock. The Data related to a Participant will be held only as long as is necessary to implement, administer, and manage the Plan and Awards and the Participant’s participation in the Plan. A Participant may, at any time,
view the Data held by the Company with respect to such Participant, request additional information about the storage and processing of the Data with respect to such Participant, recommend any necessary corrections to the Data with respect to the
Participant, or refuse or withdraw the consents herein in writing, in any case without cost, by contacting his or her local human resources representative. The Company may cancel the Participant’s eligibility to participate in the Plan, and, in
the Committee’s discretion, the Participant may forfeit any outstanding Awards if the Participant refuses or withdraws the consents described herein. For more information on the consequences of refusal to consent or withdrawal of consent,
Participants may contact their local human resources representative. 
 (i) No Liability of Committee Members. No member of the
Committee (nor any employee or director delegated authority pursuant to Section 3(b) hereof) shall be personally liable by reason of any contract or other instrument executed by such member or on his or her behalf in his or her capacity as a
member of the Committee or for any mistake of judgment made in good faith, and the Company shall indemnify and hold harmless each member of the Committee and each other employee, officer, or director of the Company to whom any duty or power relating
to the administration or interpretation of the Plan may be allocated or delegated, against all costs and expenses (including counsel fees) and liabilities (including sums paid in settlement of a claim) arising out of any act or omission to act in
connection with the Plan, unless arising out of such person’s own fraud or willful misconduct; provided, however, that approval of the Board shall be required for the payment of any amount in settlement of a claim against any such
person. The foregoing right of indemnification shall not be exclusive of any other rights of indemnification to which such persons may be entitled under the Company’s certificate or articles of incorporation or bylaws, each as may be amended
from time to time, as a matter of law, or otherwise, or any power that the Company may have to indemnify them or hold them harmless. 

  
 27 

 (j) Payments Following Accidents or Illness. If the Committee shall find that any person
to whom any amount is payable under the Plan is unable to care for his or her affairs because of illness or accident, or is a minor, or has died, then any payment due to such person or his or her estate (unless a prior claim therefor has been made
by a duly appointed legal representative) may, if the Committee so directs the Company, be paid to his or her spouse, child, relative, an institution maintaining or having custody of such person, or any other person deemed by the Committee to be a
proper recipient on behalf of such person otherwise entitled to payment. Any such payment shall be a complete discharge of the liability of the Committee and the Company therefor. 

(k) Governing Law. The Plan shall be governed by and construed in accordance with the internal laws of the State of Delaware without
reference to the principles of conflicts of laws thereof. 
 (l) Arbitration. All disputes and claims of any nature that a
Participant (or such Participant’s transferee or estate), the Company or any other member of the Company Group may have arising out of or in any way related to the Plan or any Award Agreement must be submitted solely and exclusively to binding
arbitration in accordance with the then-current employment arbitration rules and procedures of the American Arbitration Association (AAA) to be held in Howard County, Maryland. All information regarding the dispute or claim and arbitration
proceedings, including any settlement, shall not be disclosed by the Participant or any arbitrator to any third party without the written consent of the Company, except with respect to judicial enforcement of any arbitration award. Any arbitration
claim must be brought solely in the Participant’s (or such Participant’s transferee’s or estate’s) individual capacity and not as a claimant or class member (or similar capacity) in any purported multiple-claimant, class,
collective, representative or similar proceeding, and the arbitrator may not permit joinder of any multiple claimants and their claims without the express written consent of the Company. Any arbitrator selected to adjudicate the claim must be
knowledgeable in the industry standards and practices, and, by signing an Award Agreement, each Participant will be deemed to agree that any claims pursuant to the Plan or an Award Agreement is inherently a matter involving interstate commerce and
thus, notwithstanding the choice of law provision included herein, the Federal Arbitration Act shall govern the interpretation and enforcement of this arbitration provision. The arbitrator shall not be permitted to award any punitive or similar
damages, but may award attorney’s fees and expenses to the prevailing party in any arbitration. Any decision by the arbitrator shall be binding on all parties to the arbitration. 

(m) Statute of Limitations. A Participant or any other person filing a claim for benefits under the Plan must file the claim within one
(1) year of the date the Participant or other person knew or should have known of the facts giving rise to the claim. This one-year statute of limitations will apply in any forum where a Participant or
any other person may file a claim and, unless the Company waives the time limits set forth above in its sole discretion, any claim not brought within the time periods specified shall be waived and forever barred. 

(n) Funding. No provision of the Plan shall require the Company, for the purpose of satisfying any obligations under the Plan, to
purchase assets or place any assets in a trust or other entity to which contributions are made or otherwise to segregate any assets, nor shall the Company be required to maintain separate bank accounts, books, records, or other

  
 28 

 
evidence of the existence of a segregated or separately maintained or administered fund for such purposes. Participants shall have no rights under the Plan other than as unsecured general
creditors of the Company, except that insofar as they may have become entitled to payment of additional compensation by performance of services, they shall have the same rights as other employees and service providers under general law. 

(o) Reliance on Reports. Each member of the Committee and each member of the Board shall be fully justified in relying, acting, or
failing to act, and shall not be liable for having so relied, acted, or failed to act, in good faith, upon any report made by any independent public accountant of any member of the Company Group and upon any other information furnished in connection
with the Plan by any person or persons other than such member. 
 (p) Titles and Headings. The titles and headings of the sections in
the Plan are for convenience of reference only, and in the event of any conflict, the text of the Plan, rather than such titles or headings, shall control. 

(q) Stockholder Approval. Within the twelve (12) month period following the Restatement Effective Date, the Plan shall be approved
by the stockholders of the Company in accordance with the requirements of Section 422 of the Code. 

*        *        * 

The Plan was approved by the Board on May 13, 2016. 
 The
Plan was approved by the Company’s stockholders on May 17, 2016. 
 The Plan, as amended and restated, was approved by the Board on
January 18, 2017. 
 On February 23, 2017, the Board approved an amendment to the Plan to increase the number of shares of Stock subject to and
reserved for issuance pursuant to the Plan by 2,000,000 shares. Such increase is reflected in the 11,700,000 shares set forth in Section 4(a) of the Plan. 

The Plan, as amended and restated, and the increase in the number of shares of Stock subject to and reserved for issuance pursuant to the Plan by 2,000,000
shares, was approved by the Company’s stockholders on March 10, 2017. 
 On February 21, 2018, the Board approved an amendment to the Plan to
increase the number of shares of Stock subject to and reserved for issuance pursuant to the Plan by 3,000,000 shares. Such increase is reflected in the 14,700,000 shares set forth in Section 4(a) of the Plan. 

The Plan, as amended and restated, and the increase in the number of shares of Stock subject to and reserved for issuance pursuant to the Plan by 3,000,000
shares, was approved by the Company’s stockholders on March 13, 2018. 
 On June 15, 2018, the Board approved an amendment to the Plan to increase
the number of shares of Stock subject to and reserved for issuance pursuant to the Plan by 4,000,000 shares. Such increase is reflected in the 18,700,00 shares set forth in Section 4(a) of the Plan. 

The Plan, as amended and restated, and the increase in the number of shares of Stock subject to and reserve for issuance pursuant to the Plan by 4,000,000
shares, was approved by the Company’s stockholders on June 26, 2018. 

  
 29 

 APPENDIX A 

TO 
 TENABLE HOLDINGS,
INC. 2016 STOCK INCENTIVE PLAN 
 (for California residents only, to the extent required by 

California Corporations Code Section 25102(o)) 

This Appendix A to the Tenable Holdings, Inc. 2016 Stock Incentive Plan (the “Plan”) shall apply only to the Participants who
are residents of the State of California and who are receiving an Award under the Plan in reliance on California Corporations Code Section 25102(o) only. Capitalized terms contained herein shall have the same meanings given to them in the Plan,
unless otherwise provided by this Appendix A. Notwithstanding any provisions contained in the Plan to the contrary and to the extent required by applicable laws, the following terms shall apply to all Awards granted to residents of the State of
California, until the earlier to occur of (i) the IPO Date, (ii) such time as the Committee amends this Appendix A or (iii) at such time as the Committee otherwise provides. 

(a) The term of each Option shall be stated in the Option Agreement, provided, however, that the exercise period shall not be
more than one hundred twenty (120) months from the date of grant thereof. 
 (b) Unless determined otherwise by the Committee, Awards
may not be sold, pledged, assigned, hypothecated, or otherwise transferred in any manner other than by will or by the laws of descent and distribution, and may be exercised, during the lifetime of the Participant, only by the Participant. If the
Committee makes an Award transferable, such Award may only be transferred (i) by will, (ii) by the laws of descent and distribution, (iii) to a revocable trust, or (iv) as permitted by Rule 701 of the Securities Act. 

(c) In the event of the Termination of a Participant prior to the Expiration Date for any reason other than (i) by the Service Recipient
for Cause or (ii) by reason of the Participant’s death or Disability, such Participant may exercise his or her Options within such period of time as specified in the Plan, which period shall not be less than thirty (30) days following
the date of such Termination, to the extent that such Options are exercisable on the date of such Termination (but in no event later than the Expiration Date of such Options as set forth in the Award Agreement and/or the Plan). 

(d) In the event of the Termination of a Participant prior to the Expiration Date by reason of the Participant’s Disability, the
Participant may exercise his or her Options within such period of time as specified in the Plan, which period shall not be less than six (6) months following the date of such Termination, to the extent such Options are exercisable on the date
of such Termination (but in no event later than the Expiration Date of such Options as set forth in the Award Agreement and/or the Plan). 

(e) In the event of the Termination of a Participant prior to the Expiration Date by reason of the Participant’s death, any Options held
by the Participant as of the date of such Termination may be exercised within such period of time as specified in the Plan, which 

  
 A-1 

 
period shall not be less than six (6) months following the date of such Termination, to the extent such Options are exercisable on the date of such Termination (but in no event later than
the Expiration Date of such Options as set forth in the Award Agreement and/or the Plan) by the person or persons to whom the Participant’s rights under such Options pass by will or by the applicable laws of descent and distribution. 

(f) No Award shall be granted, nor shall any shares of Stock be issued upon the exercise, vesting or settlement of any Award, to a resident of
California more than ten (10) years after the earlier of the date of adoption of the Plan or the date the Plan is approved by the Company’s security holders. 

(g) The Plan must be approved by a majority of the outstanding securities of the Company entitled to vote by the later of (1) within
twelve (12) months before or after the date the Plan is adopted or (2) prior to or within twelve (12) months of the granting of any Option or issuance of any security under the Plan in California. Any Option granted to any person in
California that is exercised before security holder approval is obtained and any issuance of securities purchased before security holder approval is obtained must be rescinded if security holder approval is not obtained in the manner described in
the preceding sentence. Such securities shall not be counted in determining whether such approval is obtained. 
 (h) In the event of a
stock split, reverse stock split, stock dividend, recapitalization, combination, reclassification or other distribution of the Company’s equity securities without the receipt of consideration by the Company, of or on the Company’s class of
securities subject to the purchase right or underlying an Option, the Committee will make a proportionate adjustment of the number of securities purchasable under an Award and the exercise price thereof under an Option; provided, however,
that the Committee will make such proportionate adjustments to an Award in the event of or as required by Section 25102(o) of the California Corporations Code to the extent the Company is relying upon the exemption afforded thereby with respect
to the Award. 
 (i) This Appendix A shall be deemed to be part of the Plan and the Committee shall have the authority to amend this
Appendix A in accordance with Section 18 of the Plan. 

*        *        * 

  
 A-2 

 TENABLE HOLDINGS, INC. 

AMENDED AND RESTATED 2016 STOCK INCENTIVE PLAN (“the PLAN”) 

IRISH SUPPLEMENT 

(Current as at 23 May 2017) 

Capitalized terms not explicitly defined in this Irish Supplement but defined in the Plan shall have the same definitions as in the Plan, unless the context
otherwise requires. 
  

	1.	Purpose and Eligibility 

 The purpose of this supplement to the Plan (the “Irish
Supplement”) is to enable the Committee to grant awards, including any Option, Restricted Stock, other Stock-based award or any combination of the foregoing, (the “Award” or “Awards”), to certain employees,
directors and contractors of the Company Group who are based in Ireland. The Irish Supplement should be read and construed as one document with the Plan. Awards (which in the case of Options will be unapproved for Irish tax purposes) may only be
granted under the Irish Supplement to employees, directors and contractors of the Company Group. Any person to whom an Award has been granted under the Irish Supplement is a “Participant” for the purposes of the Plan. 

The tax and social security consequences of participating in the Plan are based on complex tax and social security laws, which may be subject
to varying interpretations, and the application of such laws may depend, in large part, on the surrounding facts and circumstances. Therefore, we recommend that the Participant consults with their own tax advisor regularly to determine the
consequences of taking or not taking any action concerning their participation in the Plan and to determine how the tax, social security or other laws in Ireland (or elsewhere) apply to their specific situation. 

 

	2.	Terms 

 Awards granted pursuant to the Plan shall be governed by the terms of the Plan,
subject to any such amendments set out herein and as are necessary to give effect to Section 1 of the Irish Supplement, and by the terms of the individual Award Agreement entered into between the Company and the Participant. To the extent that
there is a conflict between the rules of the Plan and the Irish Supplement, the provisions of the Irish Supplement shall prevail. 
  

	3.	Taxes 

 The references in the Plan to “Withholding Obligations” includes any
and all taxes, charges, levies and contributions in Ireland or elsewhere, to include, in particular, Universal Social Charge (USC) and Pay Related Social Insurance (PRSI) (“Taxes”). 

 

	4.	Tax Indemnity 

  

	4.1	The Participant shall be accountable for any Taxes, which are chargeable on any assessable income deriving from the grant, exercise, purchase, or vesting of, or other dealing in Awards, or Stock issued pursuant to an
Award. The Company Group shall not become liable for any Taxes, as a result of the Participant’s participation in the Plan. In respect of such assessable income, the Participant shall indemnify the Company and (at the direction of the Company)
any entity of the Company Group, which is or may be treated as the employer of the Participant in respect of the Taxes (the “Tax Liabilities”). 

 

	4.2	Pursuant to the indemnity referred to in Section 4.1, where necessary, the Participant shall make such arrangements, as the Company Group requires to meet the cost of the Tax Liabilities, including at the direction
of the Company any of the following: 

  

	 	(a)	 making a cash payment of an appropriate amount to the relevant company whether by cheque, banker’s draft or
deduction from salary in time to enable the Company 

  
 1 

	 	Group to remit such amount to the Irish Revenue Commissioners before the 14th day following the end of the month in which the event giving rise to the Tax Liabilities occurred; or 

 

	 	(b)	appointing the Company as agent and / or attorney for the sale of sufficient shares of Stock acquired pursuant to the grant, exercise, purchase or vesting of, or other dealing in Awards, or Stock issued pursuant to an
Award to cover the Tax Liabilities and authorising the payment to the relevant company of the appropriate amount (including all reasonable fees, commissions and expenses incurred by the relevant company in relation to such sale) out of the net
proceeds of sale of the shares of Stock. 

  

	5.	Employment Rights 

  

	5.1	The Participant acknowledges that his or her terms of employment shall not be affected in any way by his or her participation in the Plan which shall not form part of such terms (either expressly or impliedly). The
Participant acknowledges that his or her participation in the Plan shall be subject at all times to the rules of the Plan as may be amended from time to time (including, but not limited to, any clawback provisions). If on termination of the
Participant’s employment (whether lawfully, unlawfully, or in breach of contract) he or she loses any rights or benefits under the Plan (including any rights or benefits which he or she would not have lost had his or her employment not been
terminated), the Participant hereby acknowledges that he or she shall not be entitled to (and hereby waives) any compensation for the loss of any rights or benefits under the Plan, or any replacement or successor plan. 

 

	5.2	The Plan is entirely discretionary and may be suspended or terminated by the Board at any time for any reason. Participation in the Plan is entirely discretionary and does not create any contractual or other right to
receive future grants of Awards, or benefits in lieu of Awards. All determinations with respect to future grants will be at the sole discretion of the Board. Rights under the Plan are not pensionable. 

 

	6.	Data Protection 

  

	6.1	The Participant authorises and directs the Company Group to collect, use, disclose, transfer and otherwise process in electronic or other form, any personal data (the “Data”) regarding the
Participant’s employment, the nature of the Participant’s salary and benefits and the details of the Participant’s participation in the Plan (including but not limited to) the Participant’s home address, telephone number, date of
birth, personal public service number, salary, nationality, job title, entitlements under an Award, and number of shares of Stock, which were granted, exercised, purchased, vested or dealt with under an Award, or issued pursuant to an Award, to the
extent required for the purposes of implementing, administering and managing the Participant’s participation in the Plan. 

  

	6.2	In connection with such purpose, the Company Group may disclose and transfer Data to any entity of the Company Group and to any third party involved with the implementation, administration and management of the Plan,
including any requisite transfer to a broker or other third party assisting with the grant, exercise, purchase or vesting of, or dealing with Awards or Stock issued pursuant to an Award, or with whom the Shares may be deposited. Furthermore, the
Participant understands that the transfer of Data to such third parties is necessary to facilitate the Participant’s participation in the Plan. 

  

	6.3	The Participant understands that some recipients of Data may be located in countries outside the European Union and that those countries may have data protection laws which do not provide the same level of protection as
those in Ireland and other European Union countries. However, in the case of transfer to such non-European Union countries, the Company Group will ensure that Data will be treated with appropriate security
measures through the implementation of model clauses or other lawful methods. 

  
 2 

	6.4	Additional terms regarding data protection are set forth in section 21(h) (Data Privacy) of the Plan. However, to the extent the terms of this section 6 conflict with the terms of section 21(h) of the Plan, the terms of
this section 6 shall prevail. 

 Adopted by the Committee of the Company on 

May 23, 2017 

  
 3 

 OPTION GRANT NOTICE AND AGREEMENT 

Tenable Holdings, Inc. (the “Company”), pursuant to its 2016 Stock Incentive Plan, as adopted on May 13, 2016 and
amended on January 18, 2017, and as may be further amended from time to time (the “Plan”), hereby grants to the Holder the number of Options set forth below, each Option representing the right to purchase one share of Stock at
the applicable Exercise Price (set forth below). The Options are subject to all of the terms and conditions set forth in this Option Grant Notice and Agreement (this “Award Agreement”), as well as all of the terms and conditions of
the Plan, all of which are incorporated herein in their entirety. Capitalized terms not otherwise defined herein shall have the same meaning as set forth in the Plan. 
  

			
	 Holder:
	  	
		
	 Date of Grant:
	  	
		
	 Vesting Commencement Date:
	  	
		
	 Number of Options:
	  	
		
	 Exercise Price:
	  	 $

		
	 Expiration Date:
	  	
		
	 Type of Option:
	  	 Nonqualified Stock Option

		
	 Vesting Schedule:
	  	Provided that the Holder has not undergone a Termination prior to the applicable vesting date, twenty five percent (25%) of the Options shall vest on each twelve (12) month anniversary of the Vesting Commencement Date,
rounded down to the nearest whole share; provided, that with respect to the last such yearly installment, the number of Options that vest in the installment shall be such that the Holder will be fully vested in the total number of Options
listed above as of the applicable yearly anniversary.
		
	Exercise of Options:	  	To exercise vested Options, the Holder (or his or her authorized representative) must give written notice to the Company, using the form of Option Exercise Notice attached hereto as Exhibit A, stating the number of
Options which he or she intends to exercise. The Company will issue the shares of Stock with respect to which the Options are exercised upon payment of the shares of Stock acquired in accordance with Section 5(d) of the Plan, which
Section 5(d) is incorporated herein by reference and made a part hereof; provided, however, that if the Holder wishes to use any method of exercise other than in immediately available funds in United States dollars, or by
certified or bank cashier’s check, the Holder shall have received the prior written approval of the Committee or its designee approving such method of exercise.

			
		  	Upon exercise of Options, the Holder will be required to satisfy applicable withholding tax obligations as provided in Section 17 of the Plan.
		
	Termination:	  	Section 5(g) of the Plan regarding treatment of Options upon Termination is incorporated herein by reference and made a part hereof. Following any such Termination, shares acquired upon exercise of any Options shall remain
subject to Sections 8 and 9 of the Plan.
		
	Restrictions on Stock:	  	Stock acquired upon exercise of any Options hereunder shall be subject to the restrictions set forth in Section 8 and 9 of the Plan.
		
	Voting Proxy:	  	As a condition of the grant of Options hereunder, the Holder hereby grants to the Investors, acting jointly, the Holder’s irrevocable proxy, and appoints the Investors, or any designee or nominee of the Investors, as the
Holder’s attorney-in-fact (with full power of substitution and resubstitution), for and in its name, place, and stead, to (i) vote or act by written consent
with respect to the Subject Shares (whether or not vested) now or hereafter owned by the Holder (or any transferee), including the right to sign the Holder’s name, as a stockholder, to any consent, certificate, or other document relating to the
Company that applicable law may require, in connection with any and all matters (other than any amendment to the Plan that would require stockholder approval), including, without limitation, the election of directors and the sale or transfer of any
Subject Shares as contemplated in Section 8 of the Plan, and (ii) take any and all action necessary to sell or otherwise transfer any Subject Shares as contemplated by Section 8 of the Plan. This proxy shall be coupled with an
interest, and the Holder agrees to take such further action or execute such other instruments as may be necessary to effectuate the intent of this proxy. In the event that any or all provisions of the proxy described hereunder are determined to be
unenforceable, the Holder shall grant a proxy that, to the fullest extent permitted by applicable law, preserves the intent of and provides the Investors with substantially the same benefits of the proxy described hereunder. The proxy described
hereunder shall terminate upon the IPO Date.
	Non-Interference	  	
	Agreement:	  	As a condition of the grant of Options hereunder, the Holder hereby affirms all confidentiality, non-interference, invention assignment or similar covenants previously made by the Holder in
favor of the Company Group and acknowledges that such covenants are independent obligations of the Holder (such

  
 -2- 

			
		  	covenants, the “Non-Interference Agreement”). The Holder hereby acknowledges and agrees that this Award Agreement and the
Non-Interference Agreement will be considered separate contracts, and the Non-Interference Agreement will survive the termination of this Award Agreement for any
reason.
		
	Additional Terms:	  	 Options shall be subject to the following additional terms:

		
		  	 •   Options shall be exercisable in whole shares of Stock
only.

		
		  	 •   Each Option shall cease to be exercisable as to any share of Stock
when the Holder purchases the share of Stock or when the Option otherwise expires or is forfeited.

		
		  	 •   The Stock issued upon the exercise of any Options hereunder shall be
registered in the Holder’s name on the books of the Company during the Lock-Up Period and for such additional time as the Committee determines appropriate in its reasonable discretion. Any certificates
representing the Stock delivered to the Holder shall be subject to such stop transfer orders and other restrictions as the Committee may deem advisable under the rules, regulations, and other requirements of the Securities and Exchange Commission,
any stock exchange upon which such shares are listed, and any applicable federal or state laws, and the Committee may cause a legend or legends to be put on any such certificates to make appropriate reference to such restrictions as the Committee
deems appropriate.

		
		  	 •   The Holder shall be the record owner of the Stock issued in respect of
the Options, and as record owner shall generally be entitled to all rights of a stockholder with respect to the Stock issued in respect of the Options.

		
		  	 •   This Award Agreement does not confer upon the Holder any right to
continue as an employee or service provider of the Service Recipient or any other member of the Company Group.

		
		  	 •   This Award Agreement shall be construed and interpreted in accordance
with the laws of the State of Delaware, without regard to the principles of conflicts of law thereof.

		
		  	 •   The Holder and the Company acknowledge that the Options are intended
to be exempt from Sections 409A and 457A of the Code, with the Exercise Price intended to be at least equal to the Fair Market Value per share of Stock on the Date of Grant. Since the Stock is not traded on an established securities market, the
Exercise Price has been based upon the determination of Fair Market Value by the Committee in a manner consistent with the terms of the Plan.

  
 -3- 

			
		  	 The Holder acknowledges that there is no guarantee that the Internal Revenue Service will agree with this valuation,
and agrees not to make any claim against the Company, the Committee, the Company’s officers or employees in the event that the Internal Revenue Service asserts that the valuation was too low or that the Options are not otherwise exempt from
Section 409A of the Code.

		
		  	 •   The Holder agrees that the Company may deliver by email all documents
relating to the Plan or the Options (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures that may be required by the
Securities and Exchange Commission). The Holder also agrees that the Company may deliver these documents by posting them on a website maintained by the Company or by a third party under contract with the Company. If the Company posts these documents
on a website, it shall notify the Holder by email or such other reasonable manner as then determined by the Company.

		
		  	 •   This Award Agreement and the Plan constitute the entire understanding
and agreement of the parties hereto and supersede all prior negotiations, discussions, correspondence, communications, understandings, and agreements (whether oral or written and whether express or implied) between the Company and the Holder
relating to the subject matter of this Award Agreement. Without limiting the foregoing, to the extent the Holder has entered into an employment or similar agreement with the Company or any of its affiliates, and the terms noted in such employment or
similar agreement are inconsistent with or conflict with this Award Agreement, then the terms of this Award Agreement will supersede and be deemed to amend and modify the inconsistent or conflicting terms set forth in such employment or similar
agreement.

		
	Representations and	  	
	Warranties of the	  	
	Holder:	  	The Holder hereby represents and warrants to the Company that:

  
 -4- 

			
		  	 •   The Holder understands that the Stock has not been registered under
the Securities Act, nor qualified under any state securities laws, and that it is being offered and sold pursuant to, and in reliance upon, the exemption from such registration provided by Rule 701 promulgated under the Securities Act for security
issuances under compensatory benefit plans such as the Plan;

		
		  	 •   The Holder has been informed that the shares of Stock are restricted
securities under the Securities Act and may not be resold or transferred unless the shares of Stock are first registered under the federal securities laws or unless an exemption from such registration is available; and

		
		  	 •   The Holder is prepared to hold the shares of Stock for an indefinite
period and that the Holder is aware that Rule 144 as promulgated under the Securities Act, which exempts certain resales of restricted securities, is not presently available to exempt the resale of the shares of Stock from the registration
requirements of the Securities Act.

 *    *     * 

  
 -5- 

 THE UNDERSIGNED HOLDER ACKNOWLEDGES RECEIPT OF THIS AWARD AGREEMENT AND THE PLAN, AND, AS AN EXPRESS CONDITION
TO THE GRANT OF OPTIONS UNDER THIS AWARD AGREEMENT, AGREES TO BE BOUND BY THE TERMS OF BOTH THIS AWARD AGREEMENT AND THE PLAN. 
  

			
	 TENABLE HOLDINGS, INC.
	  	HOLDER

			
	

 

 
 Date:
                                        
             

  
 [Signature Page to
Option Grant Notice and Agreement] 

 OPTION GRANT NOTICE AND AGREEMENT 

Tenable Holdings, Inc. (the “Company”), pursuant to its 2016 Stock Incentive Plan, as adopted on May 13, 2016 and amended
on January 18, 2017, and as may be further amended from time to time (the “Plan”), hereby grants to the Holder the number of Options set forth below, each Option representing the right to purchase one share of Stock at the
applicable Exercise Price (set forth below). The Options are subject to all of the terms and conditions set forth in this Option Grant Notice and Agreement (this “Award Agreement”), as well as all of the terms and conditions of the
Plan, all of which are incorporated herein in their entirety. Capitalized terms not otherwise defined herein shall have the same meaning as set forth in the Plan. 
  

			
	 Holder:
	  	
		
	 Date of Grant:
	  	
		
	 Vesting Commencement Date:
	  	
		
	 Number of Options:
	  	
		
	 Exercise Price:
	  	$
		
	 Expiration Date:
	  	
		
	 Type of Option:
	  	Nonqualified Stock Option
		
	 Vesting Schedule:
	  	Provided that the Holder has not undergone a Termination prior to the applicable vesting date, twenty five percent (25%) of the Options shall vest on each twelve (12) month anniversary of the Vesting Commencement Date,
rounded down to the nearest whole share; provided, that with respect to the last such yearly installment, the number of Options that vest in the installment shall be such that the Holder will be fully vested in the total number of Options
listed above as of the applicable yearly anniversary.
		
	 Acceleration:
	  	If at any time between the date of a definitive agreement providing for a Change of Control (as defined below) is entered into and the date which is twelve (12) months after the closing of such Change of Control, the Holder
is either terminated without Cause (as defined in the Plan) or resigns for Good Reason (as defined below), then the remaining unvested portion of the Option will accelerate and be deemed at such time to be vested in full. If at the time of the
Change of Control the Option is not yet 100% vested, and the Option is continued, assumed or a substituted option is granted as permitted by Section 11 of the Plan (collectively a “Continued Option”), then such Continued Option
shall become 100% vested if and when provided for under this paragraph, and if there is not a Continued Option, then the property or money which would otherwise be received for the unvested portion of the Option if it had been vested shall be
deferred and delivered to the Holder if and when the Holder becomes 100% vested in the Option under this paragraph.

  

			
		
	 Exercise of Options:
	  	To exercise vested Options, the Holder (or his or her authorized representative) must give written notice to the Company, using the form of Option Exercise Notice attached hereto as Exhibit A, stating the number of
Options which he or she intends to exercise. The Company will issue the shares of Stock with respect to which the Options are exercised upon payment of the shares of Stock acquired in accordance with Section 5(d) of the Plan, which
Section 5(d) is incorporated herein by reference and made a part hereof; provided, however, that if the Holder wishes to use any method of exercise other than in immediately available funds in United States dollars, or by
certified or bank cashier’s check, the Holder shall have received the prior written approval of the Committee or its designee approving such method of exercise.
		
		  	Upon exercise of Options, the Holder will be required to satisfy applicable withholding tax obligations as provided in Section 17 of the Plan.
		
	 Termination:
	  	Section 5(g) of the Plan regarding treatment of Options upon Termination is incorporated herein by reference and made a part hereof. Following any such Termination, shares acquired upon exercise of any Options shall remain
subject to Sections 8 and 9 of the Plan.
		
	 Restrictions on Stock:
	  	Stock acquired upon exercise of any Options hereunder shall be subject to the restrictions set forth in Section 8 and 9 of the Plan.
		
	 Voting Proxy:
	  	As a condition of the grant of Options hereunder, the Holder hereby grants to the Investors, acting jointly, the Holder’s irrevocable proxy, and appoints the Investors, or any designee or nominee of the Investors, as the
Holder’s attorney-in-fact (with full power of substitution and resubstitution), for and in its name, place, and stead, to (i) vote or act by written consent
with respect to the Subject Shares (whether or not vested) now or hereafter owned by the Holder (or any transferee), including the right to sign the Holder’s name, as a stockholder, to any consent, certificate, or other document relating to the
Company that applicable law may require, in connection with any and all matters (other than any amendment to the Plan that would require stockholder approval), including, without limitation, the election of directors and the sale or transfer of any
Subject Shares as contemplated in Section 8 of the Plan, and (ii) take any and all action necessary to sell or otherwise transfer any Subject Shares as contemplated by Section 8 of the Plan.

  
 -2- 

			
		  	This proxy shall be coupled with an interest, and the Holder agrees to take such further action or execute such other instruments as may be necessary to effectuate the intent of this proxy. In the event that any or all provisions
of the proxy described hereunder are determined to be unenforceable, the Holder shall grant a proxy that, to the fullest extent permitted by applicable law, preserves the intent of and provides the Investors with substantially the same benefits of
the proxy described hereunder. The proxy described hereunder shall terminate upon the IPO Date.
		
	 Non-Interference Agreement:
	  	As a condition of the grant of Options hereunder, the Holder hereby affirms all confidentiality, non-interference, invention assignment or similar covenants previously made by the Holder in
favor of the Company Group and acknowledges that such covenants are independent obligations of the Holder (such covenants, the “Non-Interference Agreement”). The Holder hereby
acknowledges and agrees that this Award Agreement and the Non-Interference Agreement will be considered separate contracts, and the Non-Interference Agreement will
survive the termination of this Award Agreement for any reason.
		
	 Additional Terms:
	  	Options shall be subject to the following additional terms:
		
		  	 •   Options shall be exercisable in whole shares of Stock
only.

		
		  	 •   Each Option shall cease to be exercisable as to any share of Stock
when the Holder purchases the share of Stock or when the Option otherwise expires or is forfeited.

		
		  	 •   The Stock issued upon the exercise of any Options hereunder shall be
registered in the Holder’s name on the books of the Company during the Lock-Up Period and for such additional time as the Committee determines appropriate in its reasonable discretion. Any certificates
representing the Stock delivered to the Holder shall be subject to such stop transfer orders and other restrictions as the Committee may deem advisable under the rules, regulations, and other requirements of the Securities and Exchange Commission,
any stock exchange upon which such shares are listed, and any applicable federal or state laws, and the Committee may cause a legend or legends to be put on any such certificates to make appropriate reference to such restrictions as the Committee
deems appropriate.

  
 -3- 

			
		  	 •   The Holder shall be the record owner of the Stock issued in respect of
the Options, and as record owner shall generally be entitled to all rights of a stockholder with respect to the Stock issued in respect of the Options.

		
		  	 •   This Award Agreement does not confer upon the Holder any right to
continue as an employee or service provider of the Service Recipient or any other member of the Company Group.

		
		  	 •   This Award Agreement shall be construed and interpreted in accordance
with the laws of the State of Delaware, without regard to the principles of conflicts of law thereof.

		
		  	 •   The Holder and the Company acknowledge that the Options are intended to
be exempt from Sections 409A and 457A of the Code, with the Exercise Price intended to be at least equal to the Fair Market Value per share of Stock on the Date of Grant. Since the Stock is not traded on an established securities market, the
Exercise Price has been based upon the determination of Fair Market Value by the Committee in a manner consistent with the terms of the Plan. The Holder acknowledges that there is no guarantee that the Internal Revenue Service will agree with this
valuation, and agrees not to make any claim against the Company, the Committee, the Company’s officers or employees in the event that the Internal Revenue Service asserts that the valuation was too low or that the Options are not otherwise
exempt from Section 409A of the Code.

		
		  	 •   The Holder agrees that the Company may deliver by email all documents
relating to the Plan or the Options (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures that may be required by the
Securities and Exchange Commission). The Holder also agrees that the Company may deliver these documents by posting them on a website maintained by the Company or by a third party under contract with the Company. If the Company posts these documents
on a website, it shall notify the Holder by email or such other reasonable manner as then determined by the Company.

		
		  	 •   This Award Agreement and the Plan constitute the entire understanding
and agreement of the parties hereto and supersede all prior negotiations, discussions, correspondence, communications, understandings, and agreements (whether oral or written and whether express or implied) between the Company and the Holder
relating to the subject matter of this Award Agreement.

  
 -4- 

			
		  	 Without limiting the foregoing, to the extent the Holder has entered into an employment or similar agreement with the
Company or any of its affiliates, and the terms noted in such employment or similar agreement are inconsistent with or conflict with this Award Agreement, then the terms of this Award Agreement will supersede and be deemed to amend and modify the
inconsistent or conflicting terms set forth in such employment or similar agreement.

		
		  	 •   “Change of Control” will mean: (A) one or more
individuals, persons, general partnerships, limited partnerships, limited liability partnerships, limited liability companies, corporations, joint ventures, trusts, business trusts, cooperatives, associations, foreign trusts, foreign business
organizations or other entities, acting individually or as a group (within the meaning of Section 13(d) of the Securities Exchange Act of 1934) (other than (w) the Company, (x) any trustee or other fiduciary holding securities under
an employee benefit plan of the Company, (y) the Investors, or (z) a shareholder of the Company as of the date of this Agreement, an immediate family member of such shareholder or a trust or other entity owned solely by or for the benefit
of any such persons) (a “Person”) acquires (other than solely by reason of a repurchase of voting securities by the Company) more than 50% of the combined voting power of the Company’s then total outstanding voting securities;
(B) there is consummated a merger or consolidation of the Company with any other corporation or other entity, other than (1) a merger or consolidation which results in the voting securities of the Company outstanding immediately prior to
such merger or consolidation continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity or any parent thereof) at least 50% of the combined voting power of the securities of the
Company or such surviving entity or any direct or indirect parent thereof outstanding immediately after such merger or consolidation or (2) a merger or consolidation effected to implement a recapitalization of the Company (or similar
transaction) in which no Person is or becomes the beneficial owner, directly or indirectly, of securities of the Company (meaning that such Person is entitled to the benefits of ownership although such Person does have possession of or title to such
securities) (not including in the securities beneficially owned by such Person any securities acquired directly from the Company or its affiliates) representing 50% or more of the combined voting power of the Company’s then outstanding
securities; (C) the consummation of a sale, lease exclusive license or other disposition of all or substantially all of the assets of the Company; or (D) the stockholders of the Company approve a plan of complete liquidation or
dissolution; provided, however, that in no event shall an initial public offering of the capital stock of the Company constitute a Change of Control for purposes of this Agreement.

  
 -5- 

			
		
		  	 •   “Good Reason” is defined as the Holder’s
resignation as a result of (A) an involuntary reduction in the Holder’s base salary, other than in a broad based reduction similarly affecting all other members of Company’s executive management, (B) a failure of a successor of
the Company to assume the obligations under this Agreement in all material respects, (C) the relocation of the Holder’s principal place of employment more than fifty (50) miles from its current location, without the Holder’s
consent, (D) the Company’s failure to comply with its material obligations under this Agreement or under any other written agreement with the Holder, (E) a substantial diminution of the Holder’s duties, authority or
responsibilities. Notwithstanding the foregoing, the Holder must provide written notice to the Company within thirty (30) days of learning of the occurrence of an event which constitutes Good Reason or will constitute Good Reason and the
Company has thirty (30) days following receipt of such written notice to cure any or all of the foregoing. In order for a resignation to qualify as a resignation for Good Reason, the Holder must resign within sixty (60) days after the end
of such thirty (30) day cure period.

		
	Representations and	  	
	Warranties of the Holder:	  	The Holder hereby represents and warrants to the Company that:
		
		  	 •   The Holder understands that the Stock has not been registered under
the Securities Act, nor qualified under any state securities laws, and that it is being offered and sold pursuant to, and in reliance upon, the exemption from such registration provided by Rule 701 promulgated under the Securities Act for security
issuances under compensatory benefit plans such as the Plan;

  
 -6- 

			
		 	 •   The Holder has been informed that the shares of Stock are restricted
securities under the Securities Act and may not be resold or transferred unless the shares of Stock are first registered under the federal securities laws or unless an exemption from such registration is available; and

		
		 	 •   The Holder is prepared to hold the shares of Stock for an indefinite
period and that the Holder is aware that Rule 144 as promulgated under the Securities Act, which exempts certain resales of restricted securities, is not presently available to exempt the resale of the shares of Stock from the registration
requirements of the Securities Act.

 *        *        * 

  
 -7- 

 THE UNDERSIGNED HOLDER ACKNOWLEDGES RECEIPT OF THIS AWARD AGREEMENT AND THE PLAN, AND, AS AN EXPRESS CONDITION
TO THE GRANT OF OPTIONS UNDER THIS AWARD AGREEMENT, AGREES TO BE BOUND BY THE TERMS OF BOTH THIS AWARD AGREEMENT AND THE PLAN. 
  

			
	 TENABLE HOLDINGS, INC.
	  	 HOLDER

			
	
	 

Date:                       
                  
 [Signature Page to Option Grant
Notice and Agreement] 

 OPTION GRANT NOTICE AND AGREEMENT 

Tenable Holdings, Inc. (the “Company”), pursuant to its 2016 Stock Incentive Plan, as adopted on May 13, 2016 and
amended on January 18, 2017, and as may be further amended from time to time (the “Plan”), hereby grants to the Holder the number of Options set forth below, each Option representing the right to purchase one share of Stock at
the applicable Exercise Price (set forth below). The Options are subject to all of the terms and conditions set forth in this Option Grant Notice and Agreement (this “Award Agreement”), as well as all of the terms and conditions of
the Plan, all of which are incorporated herein in their entirety. Capitalized terms not otherwise defined herein shall have the same meaning as set forth in the Plan. 
  

			
	 Holder:
	  	
		
	 Date of Grant:
	  	
		
	 Vesting Commencement Date:
	  	
		
	 Number of Options:
	  	
		
	 Exercise Price:
	  	$
		
	 Expiration Date:
	  	
		
	 Type of Option:
	  	Nonqualified Stock Option
		
	 Vesting Schedule:
	  	Provided that the Holder has not undergone a Termination prior to the applicable vesting date, twenty five percent (25%) of the Options shall vest on each twelve (12) month anniversary of the Vesting Commencement Date,
rounded down to the nearest whole share; provided, that with respect to the last such yearly installment, the number of Options that vest in the installment shall be such that the Holder will be fully vested in the total number of Options
listed above as of the applicable yearly anniversary.
		
	 Acceleration:
	  	Should you be terminated by the Company without Cause (as defined in the Plan) or should you resign for Good Reason (as defined below) and other than due to death or disability, effective after the first anniversary of the
Vesting Commencement Date, and as of the date of your termination the Option has not already become fully vested, you will be credited with an additional vesting percentage equal to 25% multiplied by a fraction, the numerator of which is equal to
the number of completed months of Continuous Service elapsed since the preceding anniversary of the Vesting Commencement Date on which additional vesting was

			
		  	received and the denominator of which is twelve (12). For avoidance of doubt if the effective date of termination without Cause or for Good Reason occurs on an anniversary date of the Vesting Commencement Date, no additional
vesting for a partial year will be provided under the preceding sentence. In addition to the foregoing, if at any time between the date of a definitive agreement providing for a Change of Control (as defined below) is entered into and the date which
is twelve (12) months after the closing of such Change of Control, the Holder is either terminated without Cause or resigns for Good Reason, then the remaining unvested portion of the Option will accelerate and be deemed at such time to be
vested in full. If at the time of the Change of Control the Option is not yet 100% vested, and the Option is continued, assumed or a substituted option is granted as permitted by Section 11 of the Plan (collectively a “Continued
Option”), then such Continued Option shall become 100% vested if and when provided for under this paragraph, and if there is not a Continued Option, then the property or money which would otherwise be received for the unvested portion of
the Option if it had been vested shall be deferred and delivered to the Holder if and when the Holder becomes 100% vested in the Option under this paragraph.
		
	Exercise of Options:	  	To exercise vested Options, the Holder (or his or her authorized representative) must give written notice to the Company, using the form of Option Exercise Notice attached hereto as Exhibit A, stating the number of
Options which he or she intends to exercise. The Company will issue the shares of Stock with respect to which the Options are exercised upon payment of the shares of Stock acquired in accordance with Section 5(d) of the Plan, which
Section 5(d) is incorporated herein by reference and made a part hereof; provided, however, that if the Holder wishes to use any method of exercise other than in immediately available funds in United States dollars, or by
certified or bank cashier’s check, the Holder shall have received the prior written approval of the Committee or its designee approving such method of exercise.
		
		  	Upon exercise of Options, the Holder will be required to satisfy applicable withholding tax obligations as provided in Section 17 of the Plan.
		
	Termination:	  	Section 5(g) of the Plan regarding treatment of Options upon Termination is incorporated herein by reference and made a part hereof. Following any such Termination, shares acquired upon exercise of any Options shall remain
subject to Sections 8 and 9 of the Plan, except as described in the following paragraph.

  
 -2- 

			
	Restrictions on Stock:	  	Stock acquired upon exercise of any Options hereunder shall be subject to the restrictions set forth in Section 8 and 9 of the Plan, except for the Irrevocable Proxy pursuant to Section 8(e) of the Plan. The Repurchase
Right pursuant to Section 9 of the Plan will only apply if Holder is terminated for Cause.
		
	Drag Along Rights:	  	In lieu of the Drag Along Rights specified in Section 8(b) of the Plan, the following will apply. Notwithstanding any provision of this Award Agreement to the contrary, if at any time the Board of Directors approves a sale
of the Company, Holder agrees that he or she will consent to and raise no objections against the sale of the Company, and if the sale of the Company is structured as (i) a merger or consolidation of the Company, or a sale of all or
substantially all of the assets of the Company, Holder will waive any dissenters’ rights, appraisal rights or similar rights in connection with such merger, consolidation or asset sale, or (ii) a sale of all or substantially all of the
common stock of the Company, Holder agrees to sell all of his or her shares of common stock acquired under the Plan in the sale of the Company, on the terms and conditions approved by the Board of Directors. Holder hereby agrees to take all
necessary and desirable actions approved by the Board of Directors in connection with the consummation of the sale of the Company, including voting for, giving written consent to the sale of the Company and executing such agreements and such
instruments and completing other actions reasonably necessary to (x) subject to the last sentence of this Section, provide customary representations, warranties, indemnities, and escrow arrangements relating to such sale of the Company and
(y) effectuate the allocation and distribution of the aggregate consideration upon the sale of the Company. In connection with such sale of the Company, (1) Holder’s representations and warranties shall be limited to ownership and
authority to vote and/or transfer the common stock (the “Individual Representations and Warranties”), and (2) except in the case of a breach of Holder’s Individual Representations and Warranties, Holder’s liability for
indemnification obligations in excess of any escrow amounts shall be several (and not joint) and shall not exceed Holder’s pro rata portion of the total consideration received by the Company’s shareholders in such transaction.
		
	Sale Rights	  	If at any time prior to the second annual anniversary of the Holder’s termination of employment from the Company, one or more members of the Key Shareholder Group shall in the aggregate in a single or related series of
transactions sell twenty-five percent (25%) or more of the total number of shares of common stock of the Company held by the Key Shareholder Group (“Liquidity Sale”) and the Holder is not offered the opportunity to participate on a pro-rata basis in such Liquidity Sale, then Holder shall have the sale rights provided herein.

  
 -3- 

			
		 	The Holder shall be treated as having been offered the opportunity to participate in the Liquidity Sale if the Holder is offered the right to sell his pro-rata share in the Liquidity Sale on
the same (or no less favorable) terms and conditions as the selling shareholders of the Key Shareholder Group, the Purchaser is given at least ten (10) days’ notice of such opportunity and information regarding the material terms and
conditions of the Liquidity Sale, or if a shareholder of the Company with co-sale rights with respect to such Liquidity Sale assigns to Holder the right to exercise such assigning shareholder’s co-sale rights and which entitles the Holder to sell his pro-rata share in the Liquidity Sale on the same (or no less favorable) terms and conditions as the selling
shareholders of the Key Shareholder Group. The Holder shall be treated as being offered the right to exercise the assigning shareholder’s co-sale rights if (i) the Company or such assigning
shareholder provides written notice to the Holder as soon as practical after the period for electing to participate in such co-sale becomes known to the Company or assigning shareholder, (ii) such written
notice identifies the acquiring party or parties in the Liquidity Sale and sets forth the material terms and conditions of the Liquidity Sale, and (iii) the Holder is provided no less than a fifteen (15) day period to elect to exercise the
co-sale rights assigned to the Holder. Holder’s pro-rata share shall mean a number of shares of common stock equal to the product obtained by multiplying
(i) the number of shares of common stock and outstanding vested stock options for common stock of the Company held by the Holder by (ii) a fraction, the numerator of which is the number of shares of common stock (including shares of common
stock issuable upon exercise or conversion of equity securities) being sold by the Key Shareholder Group in the Liquidity Sale and the denominator of which is the total number of shares of common stock (including shares of common stock issuable upon
the exercise or conversion of equity securities) by the Key Shareholder Group immediately prior to the Liquidity Sale. If the Holder is not so offered the opportunity to participate on a pro-rata basis in the
Liquidity Sale, then the Holder shall have the right for a fifteen (15) day period following the closing of the Liquidity Sale to notify the Company in writing of its intent to sell (the “Sale Notice”) and the Company shall
have the obligation to purchase from Holder that number of shares of common stock equal to Shareholders pro-rata share. Such purchase shall be at the price and under terms no less favorable to Holder as were
provided for in connection with the Liquidity Sale. The Company shall promptly provide notice to Holder of a Liquidity Sale by the Key Shareholder Group pursuant to which Holder is entitled to rights under this paragraph.

  
 -4- 

			
		  	The Company shall use commercially reasonable efforts following the receipt of a Sale Notice to remove any impediments, such as loan covenant or other restrictions, which would preclude the Company from completing the purchase
under this paragraph. Closing of such purchase shall be made within thirty (30) days after the date the Company receives the Sale Notice. Holder’s rights under this paragraph shall, in the event of Holder’s death be provided to
Holder’s heirs or estate which succeed to the Holder’s shares of common stock subject to this Agreement. In the event a shareholder shall prior to a sale of shares by the Key Shareholder Group, assign to or otherwise provide to Holder (and
Holder’s heirs or estate in the event of Holder’s death) with a contractual right to exercise the co-sale rights which are available to such shareholder in connection with a future sale by the Key
Shareholder Group and which are exercisable upon such events and on such terms and conditions which are no less favorable to Holder (or his heirs or estate as applicable) than provided for in this paragraph, then the sale rights otherwise provided
in this paragraph shall terminate. Notwithstanding the above, the Holder’s rights under this paragraph shall terminate subsequent to the closing of a public offering of the common stock of the Company pursuant to a registration statement
declared effective under the Securities Act.
		
	Non-Interference Agreement:	  	As a condition of the grant of Options hereunder, the Holder hereby affirms all confidentiality, non-interference, invention assignment or similar covenants previously made by the Holder in
favor of the Company Group and acknowledges that such covenants are independent obligations of the Holder (such covenants, the “Non-Interference Agreement”). The Holder hereby
acknowledges and agrees that this Award Agreement and the Non-Interference Agreement will be considered separate contracts, and the Non-Interference Agreement will
survive the termination of this Award Agreement for any reason.
		
	Additional Terms:	  	Options shall be subject to the following additional terms:
		
		  	 •   Options shall be exercisable in whole shares of Stock
only.

		
		  	 •   Each Option shall cease to be exercisable as to any share of Stock
when the Holder purchases the share of Stock or when the Option otherwise expires or is forfeited.

		
		  	 •   The Stock issued upon the exercise of any Options hereunder shall be
registered in the Holder’s name on the books of the Company during the Lock-Up Period and for such additional time as the Committee determines appropriate in its reasonable discretion.

  
 -5- 

			
		 	 Any certificates representing the Stock delivered to the Holder shall be subject to such stop transfer orders and other
restrictions as the Committee may deem advisable under the rules, regulations, and other requirements of the Securities and Exchange Commission, any stock exchange upon which such shares are listed, and any applicable federal or state laws, and the
Committee may cause a legend or legends to be put on any such certificates to make appropriate reference to such restrictions as the Committee deems appropriate.

		
		 	 •   The Holder shall be the record owner of the Stock issued in respect of
the Options, and as record owner shall generally be entitled to all rights of a stockholder with respect to the Stock issued in respect of the Options.

		
		 	 •   This Award Agreement does not confer upon the Holder any right to
continue as an employee or service provider of the Service Recipient or any other member of the Company Group.

		
		 	 •   This Award Agreement shall be construed and interpreted in accordance
with the laws of the State of Delaware, without regard to the principles of conflicts of law thereof.

		
		 	 •   The Holder and the Company acknowledge that the Options are intended to
be exempt from Sections 409A and 457A of the Code, with the Exercise Price intended to be at least equal to the Fair Market Value per share of Stock on the Date of Grant. Since the Stock is not traded on an established securities market, the
Exercise Price has been based upon the determination of Fair Market Value by the Committee in a manner consistent with the terms of the Plan. The Holder acknowledges that there is no guarantee that the Internal Revenue Service will agree with this
valuation, and agrees not to make any claim against the Company, the Committee, the Company’s officers or employees in the event that the Internal Revenue Service asserts that the valuation was too low or that the Options are not otherwise
exempt from Section 409A of the Code.

		
		 	 •   The Holder agrees that the Company may deliver by email all documents
relating to the Plan or the Options (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures that may be required by the
Securities and Exchange Commission).

  
 -6- 

			
		 	 The Holder also agrees that the Company may deliver these documents by posting them on a website maintained by the
Company or by a third party under contract with the Company. If the Company posts these documents on a website, it shall notify the Holder by email or such other reasonable manner as then determined by the Company.

		
		 	 •   This Award Agreement and the Plan constitute the entire understanding
and agreement of the parties hereto and supersede all prior negotiations, discussions, correspondence, communications, understandings, and agreements (whether oral or written and whether express or implied) between the Company and the Holder
relating to the subject matter of this Award Agreement. To the extent this Award Agreement conflicts with the terms of the Plan, the terms of this Award Agreement will control as applied to the Option held by the Holder. Without limiting the
foregoing, to the extent the Holder has entered into an employment or similar agreement with the Company or any of its affiliates, and the terms noted in such employment or similar agreement are inconsistent with or conflict with this Award
Agreement, then the terms of this Award Agreement will supersede and be deemed to amend and modify the inconsistent or conflicting terms set forth in such employment or similar agreement.

		
		 	 •   “Affiliate” means any custodian or trustee of any
trust, or any partnership, limited liability company or other entity wholly for the benefit of, or the ownership interests of which are owned wholly by, a Key Shareholder and/or any Family Member of a Key Shareholder.

		
		 	 •   “Change of Control” will mean: (A) one or more
individuals, persons, general partnerships, limited partnerships, limited liability partnerships, limited liability companies, corporations, joint ventures, trusts, business trusts, cooperatives, associations, foreign trusts, foreign business
organizations or other entities, acting individually or as a group (within the meaning of Section 13(d) of the Securities Exchange Act of 1934) (other than (w) the Company, (x) any trustee or other fiduciary holding securities under
an employee benefit plan of the Company, (y) the Investors, or (z) a shareholder of the Company as of the date of this Agreement, an immediate family member of such shareholder or a trust or other entity owned solely by or for the benefit
of any such persons) (a “Person”) acquires (other than solely by reason of a repurchase of voting securities by the Company) more than 50% of the combined voting power of the Company’s then total outstanding voting securities;
(B) there is consummated a merger or consolidation of the Company with any other corporation or other entity, other than (1) a merger or consolidation which results in the voting securities of the Company outstanding immediately prior to
such merger or consolidation continuing to represent (either by remaining outstanding or by being converted into voting securities of the surviving entity or any parent thereof) at least 50% of the combined voting power of the securities of the
Company or such surviving entity or any direct or indirect parent thereof outstanding immediately after such merger or consolidation or (2) a merger or consolidation effected to implement a recapitalization of the Company (or similar
transaction) in which no Person is or becomes the beneficial owner, directly or indirectly, of securities of the Company (meaning that such Person is entitled to the benefits of ownership although such Person does have possession of or title to such
securities) (not including in the securities beneficially owned by such Person any securities acquired directly from the Company or its affiliates) representing 50% or more of the combined voting power of the Company’s then outstanding
securities; (C) the consummation of a sale, lease exclusive license or other disposition of all or substantially all of the assets of the Company; or (D) the stockholders of the Company approve a plan of complete liquidation or
dissolution; provided, however, that in no event shall an initial public offering of the capital stock of the Company constitute a Change of Control for purposes of this Agreement.

  
 -7- 

			
		
		 	 •  “Family Member” means a child, stepchild, grandchild, parent,
stepparent, grandparent, spouse, domestic partner, sibling, niece, nephew, mother-in-law,
father-in-law, son-in-law, daughter-in-law, brother-in-law or
sister-in-law, including adoptive relationships.

		
		 	 •  “Good Reason” is defined as the Holder’s resignation as
a result of (A) an involuntary reduction in the Holder’s base salary, other than in a broad based reduction similarly affecting all other members of Company’s executive management, (B) a failure of a successor of the Company to
assume the obligations under this Agreement in all material respects, (C) the relocation of the Holder’s principal place of employment more than fifty (50) miles from its current location, without the Holder’s consent,
(D) the Company’s failure to comply with its material obligations under this Agreement or under any other written agreement with the Holder, (E) a substantial diminution of the Holder’s duties, authority or
responsibilities.

  
 -8- 

			
		  	 Notwithstanding the foregoing, the Holder must provide written notice to the Company within thirty (30) days of
learning of the occurrence of an event which constitutes Good Reason or will constitute Good Reason and the Company has thirty (30) days following receipt of such written notice to cure any or all of the foregoing. In order for a resignation to
qualify as a resignation for Good Reason, the Holder must resign within sixty (60) days after the end of such thirty (30) day cure period.

		
		  	 •   “Key Shareholder” means Ronald J. Gula, John C.
Huffard, Jr., and Renaud M. Deraison.

		
		  	 •   “Key Shareholder Group” means the Key Shareholders,
their Family Members and Affiliates of the Key Shareholders and/or their Family Members.

		
	Representations and	  	
	Warranties of the Holder:	  	The Holder hereby represents and warrants to the Company that:
		
		  	 •   The Holder understands that the Stock has not been registered under
the Securities Act, nor qualified under any state securities laws, and that it is being offered and sold pursuant to, and in reliance upon, the exemption from such registration provided by Rule 701 promulgated under the Securities Act for security
issuances under compensatory benefit plans such as the Plan;

		
		  	 •   The Holder has been informed that the shares of Stock are restricted
securities under the Securities Act and may not be resold or transferred unless the shares of Stock are first registered under the federal securities laws or unless an exemption from such registration is available; and

		
		  	 •   The Holder is prepared to hold the shares of Stock for an indefinite
period and that the Holder is aware that Rule 144 as promulgated under the Securities Act, which exempts certain resales of restricted securities, is not presently available to exempt the resale of the shares of Stock from the registration
requirements of the Securities Act.

 *        *         *

  
 -9- 

 THE UNDERSIGNED HOLDER ACKNOWLEDGES RECEIPT OF THIS AWARD AGREEMENT AND THE PLAN, AND, AS AN EXPRESS CONDITION
TO THE GRANT OF OPTIONS UNDER THIS AWARD AGREEMENT, AGREES TO BE BOUND BY THE TERMS OF BOTH THIS AWARD AGREEMENT AND THE PLAN. 
  

			
	 TENABLE HOLDINGS, INC.
	  	HOLDER

			
	
	 

 Date:
                                         
        
 [Signature Page to Option Grant Notice and Agreement] 

  

 OPTION GRANT NOTICE AND AGREEMENT 

Tenable Holdings, Inc. (the “Company”), pursuant to its 2016 Stock Incentive Plan, as adopted on May 13, 2016 and amended
on January 18, 2017, and as may be further amended from time to time (the “Plan”), hereby grants to the Holder the number of Options set forth below, each Option representing the right to purchase one share of Stock at the
applicable Exercise Price (set forth below). The Options are subject to all of the terms and conditions set forth in this Option Grant Notice and Agreement (this “Award Agreement”), as well as all of the terms and conditions of the
Plan, all of which are incorporated herein in their entirety. Capitalized terms not otherwise defined herein shall have the same meaning as set forth in the Plan. 
  

			
	Holder:	  	
		
	Date of Grant:	  	
		
	Vesting Commencement Date:	  	
		
	Number of Options:	  	
		
	Exercise Price:	  	$
		
	Expiration Date:	  	
		
	Type of Option:	  	Nonqualified Stock Option
		
	Vesting Schedule:	  	Provided that the Holder has not undergone a Termination prior to the applicable vesting date, twenty five percent (25%) of the Options shall vest on each twelve (12) month anniversary of the Vesting Commencement Date,
rounded down to the nearest whole share; provided, that with respect to the last such yearly installment, the number of Options that vest in the installment shall be such that the Holder will be fully vested in the total number of Options
listed above as of the applicable yearly anniversary.
		
	Exercise of Options:	  	To exercise vested Options, the Holder (or his or her authorized representative) must give written notice to the Company, using the form of Option Exercise Notice attached hereto as Exhibit A, stating the number of Options
which he or she intends to exercise. The Company will issue the shares of Stock with respect to which the Options are exercised upon payment of the shares of Stock acquired in accordance with Section 5(d) of the Plan, which Section 5(d) is
incorporated herein by reference and made a part hereof; provided, however, that if the Holder wishes to use any method of exercise other than in immediately available funds in United States dollars, or by certified or bank
cashier’s check, the Holder shall have received the prior written approval of the Committee or its designee approving such method of exercise.

			
		
		  	Upon exercise of Options, the Holder will be required to satisfy applicable withholding tax obligations as provided in Section 17 of the Plan.
		
	Termination:	  	Section 5(g) of the Plan regarding treatment of Options upon Termination is incorporated herein by reference and made a part hereof. Following any such Termination, shares acquired upon exercise of any Options shall remain
subject to Sections 8 and 9 of the Plan.
		
	Restrictions on Stock:	  	Stock acquired upon exercise of any Options hereunder shall be subject to the restrictions set forth in Section 8 and 9 of the Plan.
		
	Voting Proxy:	  	As a condition of the grant of Options hereunder, the Holder hereby grants to the Investors, acting jointly, the Holder’s irrevocable proxy, and appoints the Investors, or any designee or nominee of the Investors, as the
Holder’s attorney-in-fact (with full power of substitution and resubstitution), for and in its name, place, and stead, to (i) vote or act by written consent
with respect to the Subject Shares (whether or not vested) now or hereafter owned by the Holder (or any transferee), including the right to sign the Holder’s name, as a stockholder, to any consent, certificate, or other document relating to the
Company that applicable law may require, in connection with any and all matters (other than any amendment to the Plan that would require stockholder approval), including, without limitation, the election of directors and the sale or transfer of any
Subject Shares as contemplated in Section 8 of the Plan, and (ii) take any and all action necessary to sell or otherwise transfer any Subject Shares as contemplated by Section 8 of the Plan. This proxy shall be coupled with an
interest, and the Holder agrees to take such further action or execute such other instruments as may be necessary to effectuate the intent of this proxy. In the event that any or all provisions of the proxy described hereunder are determined to be
unenforceable, the Holder shall grant a proxy that, to the fullest extent permitted by applicable law, preserves the intent of and provides the Investors with substantially the same benefits of the proxy described hereunder. The proxy described
hereunder shall terminate upon the IPO Date.
		
	Non-Interference Agreement:	  	As a condition of the grant of Options hereunder, the Holder hereby affirms all confidentiality, non-interference, invention assignment or similar covenants previously made by the Holder in
favor of the Company Group and acknowledges that such covenants are independent obligations of the Holder (such covenants, the “Non-Interference Agreement”).

  
 -2- 

			
		  	The Holder hereby acknowledges and agrees that this Award Agreement and the Non-Interference Agreement will be considered separate contracts, and the
Non-Interference Agreement will survive the termination of this Award Agreement for any reason.
		
	Additional Terms:	  	Options shall be subject to the following additional terms:
		
		  	 •   Options shall be exercisable in whole shares of Stock
only.

		
		  	 •   Each Option shall cease to be exercisable as to any share of Stock
when the Holder purchases the share of Stock or when the Option otherwise expires or is forfeited.

		
		  	 •   The Stock issued upon the exercise of any Options hereunder shall be
registered in the Holder’s name on the books of the Company during the Lock-Up Period and for such additional time as the Committee determines appropriate in its reasonable discretion. Any certificates
representing the Stock delivered to the Holder shall be subject to such stop transfer orders and other restrictions as the Committee may deem advisable under the rules, regulations, and other requirements of the Securities and Exchange Commission,
any stock exchange upon which such shares are listed, and any applicable federal or state laws, and the Committee may cause a legend or legends to be put on any such certificates to make appropriate reference to such restrictions as the Committee
deems appropriate.

		
		  	 •   The Holder shall be the record owner of the Stock issued in respect
of the Options, and as record owner shall generally be entitled to all rights of a stockholder with respect to the Stock issued in respect of the Options.

		
		  	 •   This Award Agreement does not confer upon the Holder any right to
continue as an employee or service provider of the Service Recipient or any other member of the Company Group.

		
		  	 •   This Award Agreement shall be construed and interpreted in
accordance with the laws of the State of Delaware, without regard to the principles of conflicts of law thereof.

		
		  	 •   The Holder and the Company acknowledge that the Options are intended
to be exempt from Sections 409A and 457A of the Code, with the Exercise Price intended to be at least equal to the Fair Market Value per share of Stock on the Date of Grant.

  
 -3- 

			
		  	 Since the Stock is not traded on an established securities market, the Exercise Price has been based upon the
determination of Fair Market Value by the Committee in a manner consistent with the terms of the Plan. The Holder acknowledges that there is no guarantee that the Internal Revenue Service will agree with this valuation, and agrees not to make any
claim against the Company, the Committee, the Company’s officers or employees in the event that the Internal Revenue Service asserts that the valuation was too low or that the Options are not otherwise exempt from Section 409A of the
Code.

		
		  	 •   The Holder agrees that the Company may deliver by email all
documents relating to the Plan or the Options (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures that may be
required by the Securities and Exchange Commission). The Holder also agrees that the Company may deliver these documents by posting them on a website maintained by the Company or by a third party under contract with the Company. If the Company posts
these documents on a website, it shall notify the Holder by email or such other reasonable manner as then determined by the Company.

		
		  	 •   This Award Agreement and the Plan constitute the entire
understanding and agreement of the parties hereto and supersede all prior negotiations, discussions, correspondence, communications, understandings, and agreements (whether oral or written and whether express or implied) between the Company and the
Holder relating to the subject matter of this Award Agreement. Without limiting the foregoing, to the extent the Holder has entered into an employment or similar agreement with the Company or any of its affiliates, and the terms noted in such
employment or similar agreement are inconsistent with or conflict with this Award Agreement, then the terms of this Award Agreement will supersede and be deemed to amend and modify the inconsistent or conflicting terms set forth in such employment
or similar agreement.

		
	Representations and	  	
	Warranties of the	  	
	Holder:	  	The Holder hereby represents and warrants to the Company that:

  
 -4- 

			
		 	 •   The Holder understands that the Stock has not been registered under the
United States Securities Act of 1933 (the “Securities Act”), nor qualified under any state securities laws, and that it is being offered and sold pursuant to, and in reliance upon, the exemption from such registration provided by
Regulation S (Rules 901 through 905 and notes) under the Securities Act for offers and sales of securities made outside the United States. The Stock may not be offered, sold or transferred to a U.S. Person (or for the account or benefit of a U.S.
Person) or into the United States, except if such transfer is effected: In a transaction meeting the requirements of Regulation S, pursuant to an effective registration under the Securities Act; or pursuant to an exemption from the registration
requirements of the Securities Act that has been opined applicable by U.S. counsel on whose determination the Company can rely. No hedging transactions may be conducted in connection with the Stock, unless in compliance with the Securities Act. For
this purpose, a “U.S. Person” is defined by reference to Regulation S under the Securities Act, including but not limited to any natural person resident in the United States, any partnership or corporation organized or incorporated under
the laws of the United States and any account held by a dealer or fiduciary for the benefit of a U.S. Person;

		
		 	 •   The Holder has been informed that the shares of Stock are restricted
securities under the Securities Act and may not be resold or transferred unless the shares of Stock are first registered under the federal securities laws or unless an exemption from such registration is available; and

		
		 	 •   The Holder is prepared to hold the shares of Stock for an indefinite
period and that the Holder is aware that Rule 144 as promulgated under the Securities Act, which exempts certain resales of restricted securities, is not presently available to exempt the resale of the shares of Stock from the registration
requirements of the Securities Act.

 *        *        * 

  
 -5- 

 THE UNDERSIGNED HOLDER ACKNOWLEDGES RECEIPT OF THIS AWARD AGREEMENT AND THE PLAN, AND, AS AN EXPRESS CONDITION
TO THE GRANT OF OPTIONS UNDER THIS AWARD AGREEMENT, AGREES TO BE BOUND BY THE TERMS OF BOTH THIS AWARD AGREEMENT AND THE PLAN. 
  

			
	     TENABLE HOLDINGS, INC.
	  	 HOLDER

			
	
	 

 Date:
                                         

[Signature Page to Option Grant Notice and Agreement] 

             
        , 20         
 Tenable Holdings, Inc. 

7021 Columbia Gateway Drive, Ste 500 
 Columbia, MD 21046 

Attn: Legal Department 
  

	Re:	Notice of Exercise 

  

	1.	By delivery of this Notice of Exercise, I am irrevocably electing to exercise options to purchase shares of common stock, par value $0.01 per share (“Shares”) of Tenable Holdings, Inc. (the
“Company”) granted to me under the Company’s 2016 Stock Incentive Plan (the “Plan”). 

  

	2.	The number of Shares I wish to purchase by exercising my options is                     . 

 

	3.	The applicable purchase price (or exercise price) is $             per Share, resulting in an aggregate purchase price of
$         (the “Aggregate Purchase Price”). 

  

	4.	I am satisfying my obligation to pay the Aggregate Purchase Price by delivering to the Company, with this Notice of Exercise, an amount equal to the Aggregate Purchase Price in immediately available United States
dollars, or by certified or bank cashier’s check. 

  

	5.	To satisfy the applicable withholding taxes, I have enclosed an amount equal to the applicable withholding taxes in immediately available United States dollars, or by certified or bank cashier’s check.

  

	6.	I hereby agree to be bound by all of the terms and conditions set forth in the Plan and any award agreement to which the options were granted under. If I am not the person to whom the options were granted by the
Company, proof of my right to purchase the Shares of the Company is enclosed. 

  

	7.	I have been advised to consult with any legal, tax or financial advisors I have chosen in connection with the purchase of the Shares. 

[Signature Page Follows] 

  
 - 1 - 

							
	Dated: 	 		 		  	
				
	*                                     
                                         
                                      	 		 		  	
	(Optionee’s signature)	 		 		  	  
 (Additional signature, if
necessary)

		 		 		  	
	  
 (Print name)
	 		 		  	  
 (Print name)

		 		 		  	
	  
  
	 		 		  	  
  

	  
 (Full address)
	 		 		  	  
 (Full address)

  

	*	Each person in whose name Shares are to be registered must sign this Notice of Exercise. (If more than one name is listed, specify whether the owners will hold the Shares as community property or as joint tenants with
the right of survivorship). 

 RESTRICTED STOCK GRANT NOTICE AND AGREEMENT 

Tenable Holdings, Inc. (the “Company”), pursuant to its 2016 Stock Incentive Plan, as adopted on May 13, 2016, as
amended on January 18, 2017, and as further amended and amended and restated from time to time (the “Plan”), hereby grants to the Holder the number of shares of Restricted Stock set forth below. The shares of Restricted Stock
are subject to all of the terms and conditions set forth in this Restricted Stock Grant Notice and Agreement (this “Award Agreement”), as well as all of the terms and conditions of the Plan, all of which are incorporated herein in
their entirety. The shares of Restricted Stock granted hereby are in satisfaction of the obligation to grant the Holder equity under his employment letter with the Company, dated October 23, 2016, as may be amended, restated or otherwise
modified from time to time (the “Employment Letter”). Capitalized terms not otherwise defined herein shall have the same meaning as set forth in the Plan. 
  

			
	Holder:	  	
		
	Date of Grant:	  	
		
	Vesting Commencement Date:	  	
		
	Number of Shares of Restricted Stock:	  	
		
	Vesting Schedule:	  	Provided that the Holder has not undergone a Termination prior to the applicable vesting date, and except as otherwise provided herein, twenty-five percent (25%) of the shares of Restricted Stock shall vest on the twelve
(12) month anniversary of the Vesting Commencement Date, and the remainder shall vest in substantially equal quarterly installments, rounded down to the nearest whole share, on each quarterly anniversary of the Vesting Commencement Date for a
period of twelve (12) quarters thereafter; provided, that with respect to the last such quarterly installment, the number of shares of Restricted Stock that vest in the installment shall be such that the Holder will be fully vested in
the total number of shares of Restricted Stock listed above as of the fourth anniversary of the Vesting Commencement Date.
		
	Acceleration:	  	Notwithstanding the foregoing, (A) if the Holder’s employment orservice with the Service Recipient is terminated by the Service Recipient (other than for Cause (as defined in the Employment Letter)) or on account of the
Holder’s death or Disability or by the Holder for Good Reason (as defined in the Employment Letter) at any time following the first anniversary of the Vesting Commencement Date, and if as of the effective date of the Termination the Restricted
Stock has not already become fully

			
		  	vested, Holder shall be credited with an additional vesting percentage equal to the product of 6.25% multiplied by a fraction, the numerator of which is equal to the number of completed months of continuous service with the
Service Recipient that have elapsed since the quarterly anniversary of the Vesting Commencement Date and the denominator of which is three (3), subject to the Holder’s execution of the Company’s standard form of release agreement not later
than forty-five (45) days following the effective date of such Termination (in which the Holder releases any and all known and unknown claims the Holder may have against the Company Group and its affiliates); and (B) if the Holder’s
employment or service with the Service Recipient is terminated by the Service Recipient (other than for Cause) or on account of the Holder’s death or Disability or by the Holder for Good Reason during the twelve (12) months following the
consummation of a Change in Control (as defined in the Employment Letter), any Restricted Stock that has not previously vested shall vest immediately as of the effective date of such Termination, provided, that if the Holder’s employment with
the Service Recipient is terminated by the Service Recipient (other than for Cause) or on account of Holder’s death or Disability or by the Holder for Good Reason, any then-unvested Restricted Stock shall remain outstanding but will not vest
and will be repurchased in accordance with Section 6(c) of the Plan on the ninety (90) day anniversary of such Termination unless the Company enters into a definitive agreement providing for a Change in Control within such ninety
(90) day period, in which case such Restricted Stock shall immediately accelerate and become vested as of the Change in Control, in each case, subject to the Holder’s execution of the Company’s standard form of release agreement not
later than forty-five (45) days following the Holder’s Termination (in which the Holder releases any and all known and unknown claims the Holder may have against the Company Group and its affiliates). For avoidance of doubt and with
respect to any vesting acceleration under clause (A) above, if the effective date of a Termination without Cause or for Good Reason occurs before the first anniversary date of the Vesting Commencement Date, no additional vesting for a partial
year will be provided under clause (A) of the preceding sentence.
		
	 Termination:
	  	Section 6(c) of the Plan regarding treatment of Restricted Stock upon Termination is incorporated herein by reference and made a part hereof. Following any such Termination, the provisions of Sections 8 of the Plan shall apply to
all shares of Restricted Stock that have vested on or prior to such Termination, except as provided in the following paragraph.

  
 -2- 

			
	Restrictions on Stock:	  	Stock acquired hereunder shall be subject to the restrictions set forth in Sections 8 of the Plan; provided, that Section 8(e) of the Plan shall not apply to the Stock acquired hereunder.
		
	Adjustment of Shares:	  	Subject to the provisions of the Articles of Incorporation of the Company, if (a) there is any stock dividend or liquidating dividend of cash and/or property, stock split or other change in the character or amount of any of
the outstanding securities of the Company, or (b) there is any consolidation, merger or sale of all or substantially all of the assets of the Company, then, in such event, any and all new, substituted or additional securities or other cash or
property to which Holder is entitled by reason of Holder’s ownership of shares of Stock acquired hereunder shall be immediately subject to the terms of this Award Agreement, with the same force and effect as the shares of Stock subject to such
provisions. Appropriate adjustments shall be made to the number and/or class of shares subject to the terms of this Award Agreement to reflect the exchange or distribution of such securities. In the event of a merger or consolidation of the Company
with or into another entity or any other corporate reorganization, the Company’s rights may be exercised by the Company’s successor.
		
	Drag-Along Rights:	  	 In lieu of the Drag-Along Rights specified in Section 8(b) of the Plan, the following will apply to the shares of Stock acquired
hereunder. Notwithstanding any provision of this Award Agreement to the contrary, if at any time the Board approves a sale of the Company, Holder agrees that he or she will consent to and raise no objections against the sale of the Company, and if
the sale of the Company is structured as (i) a merger or consolidation of the Company, or a sale of all or substantially all of the assets of the Company, Holder will waive any dissenters’ rights, appraisal rights or similar rights in
connection with such merger, consolidation or asset sale, or (ii) a sale of all or substantially all of the Stock of the Company, Holder agrees to sell all of his shares of Stock acquired under the Plan in the sale of the Company, on the terms
and conditions approved by the Board. Holder hereby agrees to take all necessary and desirable actions approved by the Board in connection with the consummation of the sale of the Company, including voting for, giving written consent to the sale of
the Company and executing such agreements and such instruments and completing other actions reasonably necessary to (x) subject to the last sentence of this paragraph, provide customary representations, warranties, indemnities, and escrow
arrangements relating to such sale of the Company and (y) effectuate the allocation and distribution of the aggregate consideration upon the sale of the Company. In connection with such sale of the Company, (1) Holder’s
representations and warranties shall be limited to ownership and authority to vote and/or transfer the shares of Stock

  
 -3- 

			
		  	(the “Individual Representations and Warranties”), and (2) except in the case of a breach of Holder’s Individual Representations and Warranties, Holder’s liability for indemnification obligations
in excess of any escrow amounts shall be several (and not joint) and shall not exceed Holder’s pro-rata portion of the total consideration received by the Company’s shareholders in such
transaction.
		
	 Non-Interference Agreement:
	  	As a condition of the grant of Restricted Stock hereunder, the Holder hereby affirms the confidentiality, invention assignment, non-solicit and
non-competition covenants previously made by the Holder in favor of the Company Group pursuant to that certain Intellectual Property, Non-Disclosure, Non-Solicitation, and Non- Competition Agreement entered into by and between the Service Recipient and the Holder dated as of January 2, 2017 and acknowledges that such
covenants are independent obligations of the Holder (such covenants, the “Non-Interference Agreement”). The Holder hereby acknowledges and agrees that this Award Agreement and the Non-Interference Agreement will be considered separate contracts, and the Non-Interference Agreement will survive the termination of this Award Agreement for any
reason.
		
	 Golden Parachute Considerations:
	  	Section 6 of the Employment Letter shall apply to the shares of Restricted Stock granted pursuant to this Award Agreement instead of Section 12 of the Plan.
		
	Additional Terms:	  	The shares of Restricted Stock shall be subject to the following additional terms:
		
		  	 •   Section 9, Section 10 and the penultimate sentence of Section 21(h) of
the Plan shall not apply to this Award Agreement.

		
		  	 •   The shares of Restricted Stock granted hereunder shall be registered
in the Holder’s name on the books of the Company during the Lock-Up Period and for such additional time as the Committee determines appropriate in its reasonable discretion. Any certificates representing the vested shares of Restricted Stock
delivered to the Holder shall be subject to such stop transfer orders and other restrictions as the Committee may deem advisable under the rules, regulations, and other requirements of the Securities and Exchange Commission, any stock exchange upon
which such shares are listed, and any applicable federal or state laws, and the Committee may cause a 

  
 -4- 

			
		  	 •   legend or legends to be put on any such certificates to make
appropriate reference to such restrictions as the Committee deems appropriate.

		
		  	 •   The Holder shall be the record owner of the shares of Restricted
Stock until or unless such shares of Restricted Stock are forfeited or repurchased, or otherwise sold or transferred in accordance with the terms of the Plan, and as record owner shall generally be entitled to all rights of a stockholder with
respect to the shares of Restricted Stock; provided, however, that the Company will retain custody of all dividends and distributions, if any (“Retained Distributions”), made or declared on the shares of Restricted
Stock (and such Retained Distributions shall be subject to forfeiture and the same restrictions, terms and vesting and other conditions as are applicable to the shares of Restricted Stock) until such time, if ever, as the shares of Restricted Stock
with respect to which such Retained Distributions shall have been made, paid or declared shall have become vested, and such Retained Distributions shall not bear interest or be segregated in a separate account. As soon as practicable following each
applicable vesting date any applicable Retained Distributions shall be delivered to the Holder.

		
		  	 •   Upon vesting of the shares of Restricted Stock (or such other time
that the shares of Restricted Stock are taken into income), the Holder will be required to satisfy applicable withholding tax obligations, if any, as provided in the Plan.

		
		  	 •   This Award Agreement does not confer upon the Holder any right to
continue as an employee or service provider of the Service Recipient or any other member of the Company Group.

		
		  	 •   This Award Agreement shall be construed and interpreted in
accordance with the laws of the State of Delaware, without regard to the principles of conflicts of law thereof.

		
		  	 •   The Holder agrees that the Company may deliver by email all
documents relating to the Plan or the shares of Restricted Stock (including, without limitation, a copy of the Plan) and all other documents that the Company is required to deliver to its security holders (including, without limitation, disclosures
that may be required by the Securities and Exchange Commission). The Holder also agrees that the Company may deliver these documents by

  
 -5- 

			
		  	 posting them on a website maintained by the Company or by a third party under contract with the Company. If the
Company posts these documents on a website, it shall notify the Holder by email or such other reasonable manner as then determined by the Company.

		
		  	 •   This Award Agreement, the Employment Letter and the Plan constitute
the entire understanding and agreement of the parties hereto and supersede all prior negotiations, discussions, correspondence, communications, understandings, and agreements (whether oral or written and whether express or implied) between the
Company and the Holder relating to the subject matter of this Award Agreement. To the extent this Award Agreement conflicts with the terms of the Plan, the terms of this Award Agreement will control as applied to the Restricted Stock. Without
limiting the foregoing, to the extent the Holder has entered into an employment or similar agreement with the Company or any of its affiliates, and the terms noted in such employment or similar agreement are inconsistent with or conflict with this
Award Agreement, then the terms of this Award Agreement will supersede and be deemed to amend and modify the inconsistent or conflicting terms set forth in such employment or similar agreement.

		
	Representations and Warranties of the Holder:	  	The Holder hereby represents and warrants to the Company that:
		
		  	 •   The Holder understands that the Stock has not been registered under
the Securities Act, nor qualified under any state securities laws, and that it is being offered and sold pursuant to an exemption from such registration and qualification based in part upon the Holder’s representations contained herein; the
Stock is being issued to the Holder hereunder in reliance upon the exemption from such registration provided by Section 4(a)(2) of the Securities Act for transactions by an issuer not involving any public offering, and in connection therewith,
the Holder acknowledges the Holder’s status as an “accredited investor” within the meaning of Rule 501 promulgated under the Securities Act;

		
		  	 •   The Holder is an “accredited investor” as such term is
defined in Rule 501(a) of the Securities Act and has such knowledge and experience in financial and business matters that the Holder is capable of evaluating the merits and risks

  
 -6- 

			
		  	 of the investment contemplated by this Award Agreement; and the Holder is able to bear the economic risk of this
investment in the Company (including a complete loss of this investment);

		
		  	 •   Except as specifically provided herein or in the Plan, the Holder has
no contract, undertaking, understanding, agreement or arrangement, formal or informal, with any person to sell, transfer or pledge all or any portion of his, her or its Stock, and has no current plans to enter into any such contract, undertaking,
understanding, agreement or arrangement;

		
		  	 •   The Holder has not seen, received, been presented with, or been
solicited by any leaflet, public promotional meeting, article or any other form of advertising or general solicitation as to the Company’s sale to the Holder of his, her or its Stock;

		
		  	 •   The Holder is familiar with the business and operations of the Company
and has been afforded an opportunity to ask such questions of the Company’s agents, accountants and other representatives concerning the Company’s proposed business, operations, financial condition, assets, liabilities and other relevant
matters as he has deemed necessary or desirable, in order to evaluate the merits and risks of the investment contemplated herein;

		
		  	 •   The Holder has been informed that the shares of Stock are restricted
securities under the Securities Act and may not be resold or transferred unless the shares of Stock are first registered under the federal securities laws or unless an exemption from such registration is available; and

		
		  	 •   The Holder is prepared to hold the shares of Stock for an indefinite
period and that the Holder is aware that Rule 144 as promulgated under the Securities Act, which exempts certain resales of restricted securities, is not presently available to exempt the resale of the shares of Stock from the registration
requirements of the Securities Act.

		
		  	* * *

  
 -7- 

 EXECUTION COPY 

THE UNDERSIGNED HOLDER ACKNOWLEDGES RECEIPT OF THIS AWARD AGREEMENT AND THE PLAN, AND, AS AN EXPRESS CONDITION TO THE GRANT OF RESTRICTED STOCK UNDER THIS
AWARD AGREEMENT, AGREES TO BE BOUND BY THE TERMS OF BOTH THIS AWARD AGREEMENT AND THE PLAN. 
  

							
	TENABLE HOLDINGS, INC.	 	              HOLDER

									
				
	By:	  	  
	  		 	                                   
                                         
                 
		  	 Signature
	  		 		 	Signature
	Title: 	  	  
	  		 	Date: 
	Date:	  		  		 		 	

 TENABLE HOLDINGS, INC. 

RESTRICTED STOCK UNIT GRANT NOTICE 

(2016 STOCK INCENTIVE PLAN) 

Tenable Holdings, Inc. (the “Company”), pursuant to Section 7 of the Company’s 2016 Stock Incentive Plan (the
“Plan”), hereby awards to Participant a Restricted Stock Unit Award covering the number of restricted stock units (“RSUs”) set forth below (the “Award”). This Award shall be
evidenced by a Restricted Stock Unit Award Agreement (the “Agreement”). This Award is subject to all of the terms and conditions as set forth herein and in the Agreement and the Plan, each of which is incorporated herein in
its entirety. Capitalized terms not explicitly defined herein but defined in the Plan shall have the same definitions as in the Plan. 
  

					
	Participant:	  	  
	  	            
	Date of Grant:	  	  
	  	
	Vesting Commencement Date:	  	  
	  	
	Number of RSUs:	  	  
	  	
	Payment for Common Stock:	  	 Participant’s services to the Company
	  	
	Expiration Date:	  	 Fifth anniversary of Date of Grant
	  	

 Vesting Schedule: Participant will receive a benefit with respect to a RSU only if it vests. Two vesting requirements
must be satisfied on or before the Expiration Date specified above in order for a RSU to vest — the “Time-Based Vesting Schedule” and the “Liquidity-Based Vesting Schedule” described below. The
RSUs will not vest (in whole or in part) if only one (or if neither) of such requirements is satisfied on or before the Expiration Date. If both the Time-Based Vesting Schedule and the Liquidity-Based Vesting Schedule are satisfied on or before the
Expiration Date, the vesting date of a RSU (a “Vested RSU”) will be the first date upon which both of those requirements were satisfied with respect to that particular RSU. All RSUs that are not Vested RSUs as of the
earlier of the Expiration Date or date of the Participant’s Termination will be forfeited without consideration on such earlier date. 
 Time-Based
Vesting Schedule: The Award vests with respect to the time-based vesting requirement as follows: 50% of the RSUs will vest on
                     and 50% of the RSUs will vest on
                    ; provided, however, that the Participant does not have a Termination (as defined in the Plan) prior to such
applicable vesting date. 
 Liquidity-Based Vesting Schedule. The Award vests with respect to the liquidity-based vesting requirement as set forth in
the Restricted Stock Unit Award Agreement.         
 Additional Terms/Acknowledgements: Participant
acknowledges receipt of, and understands and agrees to, this Grant Notice, the Agreement and the Plan. Participant acknowledges his or her obligation to satisfy any tax withholding obligations imposed on the Company with respect to the award or
vesting of these RSUs, or the delivery of the underlying Common Stock or cash payment, as a condition to the receipt of any stock or payments hereunder, including by requiring a cash payment to the Company by Participant. Participant further
acknowledges that as of the Date of Grant, this Restricted Stock Unit Grant Notice, the Agreement and the Plan set forth the entire understanding between Participant and the Company regarding the award of RSUs and the underlying Common Stock and
supersede all prior oral and written agreements on that subject with the exception of (i) Awards or awards of capital stock of the Company previously granted to Participant under the Plan or otherwise, (ii) any compensation recovery policy
that is adopted by the Company or is otherwise required by applicable law and (iii) any written employment or severance arrangement or other written agreement entered into between the Company and Participant specifying the terms that should
govern this Award upon the terms and conditions set forth therein. 
 By accepting this Award, Participant acknowledges having received and read this Grant
Notice, the Agreement and the Plan and agrees to all of the terms and conditions set forth in these documents. Participant consents to receive Plan and related documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and maintained by the Company or another third party designated by the Company. 

									
	TENABLE HOLDINGS, INC.	 	                	 	PARTICIPANT
				
	By:	 	  
	 		 	     

	 	 	Signature	 	 	 	 	 	Signature
					
	Title:	 	  
	 	 	 	Date:	 	  

					
	Date:	 	  
	 		 		 	

 ATTACHMENTS: Restricted Stock Unit Award Agreement 

 ATTACHMENT I 

RESTRICTED STOCK UNIT AWARD AGREEMENT 

TENABLE HOLDINGS, INC. 

RESTRICTED STOCK UNIT AWARD AGREEMENT 

(2016 STOCK INCENTIVE PLAN) 

Pursuant to the Restricted Stock Unit Grant Notice (the “Grant Notice”) and this Restricted Stock Unit Award Agreement
(the “Agreement”), Tenable Holdings, Inc. (the “Company”) has awarded Participant a stock-based award pursuant to Section 7 of the Company’s 2016 Stock Incentive Plan (the
“Plan”) for a number of restricted stock units (“RSUs”) indicated in the Grant Notice (the “Award”). The Award is granted to the Participant effective as of the date of grant
set forth in the Grant Notice (the “Date of Grant”). Capitalized terms not explicitly defined in this Agreement, but defined in the Plan shall have the same definitions as in the Plan. Subject to adjustment and the terms and
conditions as provided herein and in the Plan, each RSU shall represent the right to receive one share of Stock or its cash equivalent as described in Section 3 below. 

The details of this Award, in addition to those set forth in the Grant Notice, are as follows. 

1.    RSUS AND SHARES OF COMMON
STOCK. 
 (a)    The RSUs and the number of shares of Stock deliverable with respect to such RSUs, may
be adjusted from time to time for certain capitalization adjustments as described in Section 11(a) of the Plan. 

(b)    Any additional RSUs or shares of Stock that become subject to the Award pursuant to this Section 1 shall be
subject, in a manner determined by the Board, to the same forfeiture restrictions, restrictions on transferability, and time and manner of delivery as applicable to the other RSUs and Stock covered by the Award. 

(c)    Notwithstanding the provisions of this Section 1, no fractional RSUs or rights for fractional shares of Stock
shall be created pursuant to this Section 1. The Board shall, in its discretion, determine an equivalent benefit for any fractional RSUs or fractional shares that might be created by the adjustments referred to in this Section 1. 

2.    VESTING REQUIREMENTS AND EXPIRATION
OF RSUS. The RSUs shall vest, if at all, as set forth below. There are two separate vesting requirements applicable to the RSUs (a time-based requirement and a liquidity-based requirement). The
Participant must satisfy both of these vesting requirements before the Expiration Date. The failure to satisfy either or both of the vesting requirements before the Expiration Date results in the forfeiture and termination of the RSU without any
payment or issuance of Stock to the Participant. 
 (a)    Time-Based Vesting Requirement. The time-based vesting
requirement with respect to the RSU or any installment of the RSU is satisfied if the Participant does not have 

 
a Termination prior to the applicable vesting dates set forth in the Participant’s Grant Notice. Time-based vesting shall cease as of the date of the Participant’s Termination, and any
RSUs that have not vested under the time-based vesting requirement shall terminate and be forfeited back to the Company on the date of the Participant’s Termination. For purposes of determining the date of the Participant’s Termination
under all of the provisions of this Agreement, the Company may decide that such date will not be extended by any notice period (e.g., employment or service would not include any contractual notice period or any period of “garden
leave” or similar period mandated under employment or other laws in the jurisdiction where the Participant is employed or providing services or the terms of the Participant’s employment or service agreement, if any), subject to
Section 409A of the Code and other laws to the extent applicable. 
 (b)    Liquidity-Based Vesting
Requirement. The liquidity-based vesting requirement with respect to an RSU is satisfied upon the date following the IPO Date on which all shares of Common Stock issued or issuable under the Plan are not subject to the Lock-Up Period described in Section 12 of this Agreement (the “Lock-Up Period Expiration Date”), provided that such
Lock-Up Period Expiration Date occurs on or prior to the Expiration Date, and provided further that the Participant has not had a Termination before such Lock-up Period
Expiration Date. 
 3.    DATE OF ISSUANCE. 

(a)    Subject to the provisions of this Agreement and the Plan, the Company shall deliver to the Participant in respect of
RSUs that have not been previously terminated or forfeited, one (1) share of Stock for each RSU that has satisfied both the time-based and liquidity-based vesting requirements in accordance with Section 2 herein on the applicable vesting
date. Notwithstanding the foregoing, to the extent applicable at a vesting date when shares are registered under the Securities Act, in the event that (i) any shares covered by the RSUs are scheduled to be delivered on a day (the
“Original Distribution Date”) that does not occur: (A) during an open “window period” applicable to the Participant under the Company’s policy permitting officers, directors and other designated
individuals to sell shares only during certain “window” periods, in effect from time to time (the “Policy”), (B) on a day on which the Participant is permitted to sell shares of Stock pursuant to a written plan that
meets the requirements of Rule 10b5-1 under the Exchange Act, as determined by the Company in accordance with the Policy, or (C) on a date when the Participant is otherwise permitted to sell shares of
Stock on the open market, and (ii) the Company elects not to satisfy its obligations for Withholding Taxes (as defined in Section 11) by withholding shares from the Participant’s distribution or withholding from other compensation
otherwise payable to the Participant by the Company, then such shares will not be delivered on such Original Distribution Date and will instead be delivered on the first business day of the next occurring open “window period” applicable to
the Participant pursuant to such Policy (regardless of whether the Participant has had a Termination at such time) or the next business day when the Participant is not prohibited from selling shares of Stock in the open market, but in no event later
than the later of (i) the fifteenth (15th) day of the third month following the end of the calendar year in which the applicable shares of Stock covered by the RSUs vest or (ii) the fifteenth (15th) day of the third month following the end
of the Company’s taxable year in which the applicable shares of Stock covered by the RSUs vest (the “Issuance Deadline”). Delivery of the shares of Stock pursuant to the provisions of this Section 3(a) is intended
to comply with the requirements for the 

 
short-term deferral exemption available under Treasury Regulations Section 1.409A-1(b)(4) and will be construed and administered in such manner.
Notwithstanding the above, in lieu of settling an RSU in the form of an award of shares of Stock, the Company may settle an RSU through a lump-sum cash payment to Participant equal to the Fair Market Value of
one (1) share of Stock on the date of delivery as set forth above (a “Cash Payment”). If the Company elects to issue the Participant a Cash Payment in part or in full satisfaction of the shares of Stock issuable upon
vesting of the RSUs, then the foregoing provisions of this Section 3(a) will not apply and such cash will be paid to the Participant in a lump sum at any time on after the vesting date of the RSUs, but in no event later than the Issuance
Deadline. If a scheduled delivery date falls on a date that is not a business day, such delivery date shall instead fall on the next following business day. The form of such delivery (e.g., a stock certificate or electronic entry evidencing
such shares) shall be determined by the Company. The Company shall determine, in its discretion, whether to settle the Award through the delivery of shares of Stock, a Cash Payment, or a combination of both. 

(b)    The provisions in this Agreement for delivery of the shares or cash in respect of the RSUs are intended either to
comply with the requirements of Section 409A or to provide a basis for exemption from such requirements so that the delivery of the shares will not trigger the additional tax imposed under Section 409A, and any ambiguities in this
Agreement will be so interpreted. 
 4.    CONSIDERATION FOR
AWARD. This Award was granted in consideration of the Participant’s services to the Company. Subject to Section 11 below, except as otherwise provided in the Grant Notice, the Participant will not be
required to make any payment to the Company (other than the provision of past and future services for the Company) with respect to the Participant’s receipt of the Award, vesting of the RSUs, or the delivery of the shares of Stock or the Cash
Payment underlying the RSUs. 
 5.    SECURITIES LAW
COMPLIANCE. The Participant may not be issued any Stock underlying the RSUs unless either: (a) the issuance of such shares of Stock is then registered under the Securities Act, or (b) the Company has
determined that such issuance would be exempt from the registration requirements of the Securities Act. The Award must also comply with other applicable laws and regulations governing the Award including, without limitation, the laws and regulations
of your country of residence at the time of issuance of Stock underlying the RSU’s, and the Participant shall not receive such Stock if the Company determines that such receipt would not be in compliance with such laws and regulations. 

6.    DIVIDENDS. The Participant shall receive no benefit or
adjustment to the RSUs with respect to any cash dividend, stock dividend or other distribution that does not result from a capitalization adjustment as provided in Section 11(a) of the Plan; provided, however, that this Section 6
shall not apply with respect to any shares of Stock that are delivered to the Participant in connection with the RSUs after such shares have been delivered to the Participant. 

7.    RESTRICTIVE LEGENDS. The Stock issued with respect to the RSUs shall be
endorsed with appropriate legends, if any, determined by the Company. 

 8.    TRANSFER RESTRICTIONS.
Prior to the time that shares of Stock have been delivered to the Participant, the Participant may not transfer, pledge, sell or otherwise dispose of all or any portion of the RSUs or the shares of Stock issuable in respect of the RSUs, except as
expressly provided in this Section 8. For example, the Participant may not use the RSUs or shares that may be issued in respect of the RSUs as security for a loan, nor may the Participant transfer, pledge, sell or otherwise dispose of such
shares. 
 (a)    Death. The RSUs are transferable by will and by the laws of descent and distribution. In
addition, upon receiving written permission from the Board or its duly authorized designee, the Participant may, by delivering written notice to the Company in a form provided by or otherwise satisfactory to the Company, designate a third party who,
in the event of the Participant’s death, shall thereafter be entitled to receive any distribution of Stock or other consideration to which the Participant was entitled at the time of the Participant’s death pursuant to this Agreement. In
the absence of such a designation, the Participant’s executor or administrator of the Participant’s estate shall be entitled to receive, on behalf of the Participant’s estate, such Stock or other consideration. 

(b)    Certain Trusts. Upon receiving written permission from the Board or its duly authorized designee, the
Participant may transfer the RSUs to a trust if the Participant is considered to be the sole beneficial owner (determined under Section 671 of the Code and applicable state law) while the RSUs are held in the trust, provided that the
Participant and the trustee enter into transfer and other agreements required by the Company. 
 (c)    Domestic
Relations Orders. Upon receiving written permission from the Board or its duly authorized designee, and provided that the Participant and the designated transferee enter into transfer and other agreements required by the Company, the Participant
may transfer the RSUs or other consideration hereunder, pursuant to a domestic relations order that contains the information required by the Company to effectuate the transfer. The Participant is encouraged to discuss the proposed terms of any
division of the RSUs with the Company prior to finalizing the domestic relations order to help ensure the required information is contained within the domestic relations order. 

9.    AWARD NOT A SERVICE
CONTRACT. This Award is not an employment or service contract, and nothing in the Award shall be deemed to create in any way whatsoever any obligation on the part of the Participant to continue in the service of the
Company or any Parent or Subsidiary, or on the part of the Company or any Parent or Subsidiary to continue such service. In addition, nothing in this Award shall obligate the Company or any Parent or Subsidiary, their respective stockholders, boards
of directors or employees to continue any relationship that the Participant might have as an employee, consultant or director of the Company or any Parent or Subsidiary. 

10.    UNSECURED OBLIGATION. This Award is unfunded, and even
as to any RSUs that vest, the Participant shall be considered an unsecured creditor of the Company with respect to the Company’s obligation, if any, to issue Stock or make a Cash Payment pursuant to this Agreement. The Participant shall not
have voting or any other rights as a stockholder of the Company with respect to any Stock acquired pursuant to this Agreement until such Stock is issued pursuant to Section 3(a) of this Agreement. Upon such issuance, the Participant will

 
obtain full voting and other rights as a stockholder of the Company with respect to the Stock so issued. Nothing contained in this Agreement, and no action taken pursuant to its provisions, shall
create or be construed to create a trust of any kind or a fiduciary relationship between the Participant and the Company or any other person. 

11.    WITHHOLDING OBLIGATIONS. 

(a)    On or before the time the Participant receives a distribution of the shares of Stock underlying the RSUs or a Cash
Payment, or at any time thereafter as requested by the Company, the Participant hereby authorizes any required withholding from the Stock issuable to the Participant or the Cash Payment and/or otherwise agrees to make adequate provision in cash for
any sums required to satisfy the federal, state, local and foreign tax withholding obligations of the Company or any Parent or Subsidiary that arise in connection with the Award (the “Withholding Taxes”). Notwithstanding any
other provision of this Section, the Company may, in its sole discretion, satisfy all or any portion of the Withholding Taxes obligation relating to the Award by any of the following means or by a combination of such means: (i) withholding from
any compensation otherwise payable to the Participant by the Company; (ii) causing the Participant to tender a cash payment; (iii) withholding shares of Stock from the shares of Stock issued or otherwise issuable to the Participant in
connection with the RSUs with a Fair Market Value (measured as of the date shares of Stock are issued pursuant to Section 3) equal to the amount of such Withholding Taxes; provided, however, that the number of such shares of Stock so
withheld shall not exceed the amount necessary to satisfy the Company’s required tax withholding obligations using the minimum statutory withholding rates for federal, state, local and foreign tax purposes, including payroll taxes, that are
applicable to supplemental taxable income (or such lesser amount as may be necessary to avoid classification of the RSUs as a liability for financial accounting purposes); and provided, further, that to the extent necessary to qualify
for an exemption from application of Section 16(b) of the Exchange Act, if applicable, such share withholding procedure will be subject to the express prior approval of the Board or the Company’s Compensation Committee; (iv) if the
Stock is publicly traded, permitting or requiring the Participant to enter into a “same day sale” commitment, if applicable, with a broker-dealer that is a member of the Financial Industry Regulatory Authority (a “FINRA
Dealer”), pursuant to this authorization and without further consent, whereby the Participant irrevocably elects to sell a portion of the shares to be delivered in connection with the RSUs to satisfy the Withholding Taxes and whereby
the FINRA Dealer irrevocably commits to forward the proceeds necessary to satisfy the Withholding Taxes directly to the Company and/or its Affiliates; or (v) withholding cash from the Award settled in cash. 

(b)    Unless the tax withholding obligations of the Company and/or any Parent or Subsidiary are satisfied, the Company
shall have no obligation to deliver to the Participant any Stock or make a Cash Payment. 
 (c)    In the event the
Company’s obligation to withhold arises prior to the delivery to the Participant of Stock or the Cash Payment or it is determined after the delivery of Stock or the Cash Payment to the Participant that the amount of the Company’s
withholding obligation was greater than the amount withheld by the Company, the Participant agrees to indemnify and hold the Company harmless from any failure by the Company to withhold the proper amount. 

 12.    RESTRICTIONS ON COMMON
STOCK. 
 (a)    Lock-Up Period. The Participant agrees
that upon receipt of the Stock underlying the RSUs, the Participant shall not sell, dispose of, transfer, make any short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as
a sale, any shares of Common Stock or other securities of the Company held by Participant, for a period of one hundred eighty (180) days following the IPO Date or such longer period as necessary to permit compliance with FINRA Rule 2711 or NYSE
Member Rule 472 and similar rules and regulations (the “Lock-Up Period”); provided, however, that nothing contained in this Section shall prevent the exercise of a repurchase
option, if any, in favor of the Company during the Lock-Up Period. Participant further agrees to execute and deliver such other agreements as may be reasonably requested by the Company and/or the
underwriter(s) that are consistent with the foregoing or that are necessary to give further effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to Participant’s shares of
Stock until the end of such period. The underwriters of the Company’s stock are intended third party beneficiaries of this Section 12 and shall have the right, power and authority to enforce the provisions hereof as though they were a
party hereto. 
 (b)    Right of First Refusal. Shares of Stock that the Participant receives pursuant to his or
her RSUs are subject to any right of first refusal that may be described in the Plan. 

13.    RIGHT OF REPURCHASE. Shares of Stock that the
Participant receives pursuant to his or her RSUs are subject to any right of repurchase in favor of the Company as described in the Plan. 

14.    NOTICES. Any notices required to be given or delivered to
the Company under the terms of this Award shall be in writing and addressed to the Company at its principal corporate offices. Any notice required to be given or delivered to the Participant shall be in writing and addressed to their address as on
file with the Company at the time notice is given. All notices shall be deemed effective upon personal delivery or upon deposit in the U.S. mail, postage prepaid and properly addressed to the party to be notified. 

15.    HEADINGS. The headings of the Sections in this Agreement
are inserted for convenience only and shall not be deemed to constitute a part of this Agreement or to affect the meaning of this Agreement. 

16.    AMENDMENT. This Agreement may be amended only by a
writing executed by the Company and the Participant that specifically states that it is amending this Agreement. Notwithstanding the foregoing, this Agreement may be amended solely by the Company by a writing that specifically states that it is
amending this Agreement, so long as a copy of such amendment is delivered to the Participant, and provided that no such amendment adversely affecting the Participant’s rights hereunder may be made without the Participant’s written consent.
Without limiting the foregoing, the Company reserves the right to change, by written notice to the Participant, the provisions of this Agreement in any way it may deem necessary, appropriate or desirable to carry out the purpose of the grant as a
result of any change in applicable laws or regulations or any future law, regulation, ruling, or judicial decision. 

 17.    MISCELLANEOUS. 

(a)    The rights and obligations of the Company under this Award shall be transferable by the Company to any one or more
persons or entities, and all covenants and agreements hereunder shall inure to the benefit of, and be enforceable by the Company’s successors and assigns. 

(b)    The Participant agrees upon request to execute any further documents or instruments necessary, appropriate or
desirable in the sole determination of the Company to carry out the purposes or intent of this Award. 
 (c)    The
Participant acknowledges and agrees that the Participant has reviewed the Award in its entirety, has had an opportunity to obtain the advice of counsel prior to executing and accepting the Award and fully understands all of its provisions. 

(d)    This Agreement shall be subject to all applicable laws, rules, and regulations, and to such approvals by any
governmental agencies or national securities exchanges as may be required. 
 (e)    All obligations of the Company
under the Plan and this Agreement shall be binding on any successor to the Company, whether the existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or substantially all of the
business and/or assets of the Company. 
 18.    GOVERNING PLAN
DOCUMENT. The Award is subject to all the provisions of the Plan, the provisions of which are hereby made a part of the Award, and is further subject to all interpretations, amendments, rules and regulations which may from time to
time be promulgated and adopted pursuant to the Plan. In the event of any conflict between the provisions of the Award and those of the Plan, the provisions of the Plan shall control; provided, however, that Section 3 of this Agreement
shall govern the timing of any distribution of Common Stock under the Award. The Company shall have the power to interpret the Plan and this Agreement and to adopt such rules for the administration, interpretation, and application of the Plan as are
consistent therewith and to interpret or revoke any such rules. All actions taken and all interpretations and determinations made by the Board shall be final and binding upon the Participant, the Company, and all other interested persons. No member
of the Board shall be personally liable for any action, determination, or interpretation made in good faith with respect to the Plan or this Agreement. 

19.    EFFECT ON OTHER EMPLOYEE
BENEFIT PLANS. The value of the Award subject to this Agreement shall not be included as compensation, earnings, salaries, or other similar terms used when calculating benefits under any employee benefit plan (other
than the Plan) sponsored by the Company or any Parent or Subsidiary except as such plan otherwise expressly provides. The Company expressly reserves its rights to amend, modify, or terminate any or all of the employee benefit plans of the Company or
any Parent or Subsidiary. 

 20.    CHOICE OF
LAW. The interpretation, performance and enforcement of this Agreement shall be governed by the law of the state of Delaware without regard to such state’s conflicts of laws rules. The Participant
consents to the jurisdiction of the state and federal courts encompassing the then current location of the Company’s principal office for the resolution of any (a) proceedings brought to enforce the Company’s or the Participant’s
obligations to arbitrate under the Plan, or (b) proceedings, relating to matters outside the scope of the arbitration provisions in the Plan. 

21.    SEVERABILITY. If all or any part of this Agreement or the Plan is declared by any
court or governmental authority to be unlawful or invalid, such unlawfulness or invalidity shall not invalidate any portion of this Agreement or the Plan not declared to be unlawful or invalid. Any Section of this Agreement (or part of such a
Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner that will give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid. 

22.    SECTION 409A OF THE INTERNAL
REVENUE CODE. The delivery of shares of Stock in respect of the RSUs provided under this Agreement (and any definitions in this Agreement and in the Grant Notice governing the Award) will be construed in a manner
that complies with Section 409A of the Code and the regulations and other guidance thereunder and any state law of similar effect (collectively, “Section 409A”) and incorporates by
reference all required definitions and payment terms. If this Award is not exempt from, and is therefore deemed to be deferred compensation subject to, Section 409A, and if the Participant is a “specified employee” (within the meaning
of Section 409A(a)(2)(B)(i) of the Code) as of the date of the Participant’s “separation from service” as defined in Treasury Regulations Section 1.409A-3(i)(5), then the issuance of
any shares that would otherwise be made upon the date of Participant’s separation from service or within the first six months thereafter will not be made on the originally scheduled date(s) and will instead be issued in a lump sum on the date
that is six (6) months and one (1) day after the date of Participant’s separation from service, with the balance of the shares issued thereafter in accordance with the original issuance schedule, but if and only to the extent that the
delay in issuance of the shares is necessary to avoid the imposition of taxation on the Participant in respect of the shares under Section 409A. Notwithstanding the above, the Company makes no representations to the Participant regarding the
compliance of this Agreement or the RSUs with Section 409A, and the Participant is solely responsible for the payment of any taxes or penalties arising under Section 409A(a)(1) of the Code, or any state law of similar effect, with respect
to the grant or vesting of the RSUs or the delivery of the shares subject to this Award. 

23.    INSIDER TRADING RESTRICTIONS/MARKET
ABUSE LAWS. The Participant acknowledges that he or she may be subject to insider trading restrictions and/or market abuse laws in applicable jurisdictions, including the United States and their country of
residence, which may affect their ability to acquire or sell the shares of Stock or rights to the shares of Stock under the Plan during such times as the Participant is considered to have “inside information” regarding the Company (as
defined by the laws in his or her country). Any restrictions under these laws or regulations are separate from and in addition to any restrictions that may be imposed under any applicable Company insider trading policy. The Participant acknowledges
that it is his or her responsibility to comply with any applicable restrictions, and the Participant is advised to speak to his or her personal advisor on this matter. 

 * * * * * 

This Restricted Stock Unit Award Agreement shall be deemed to be signed by the Company and the Participant upon the signing by the Participant
of the Restricted Stock Unit Grant Notice to which it is attached.EX-10.4

 Exhibit 10.4 

TENABLE HOLDINGS, INC. 

2018 EQUITY INCENTIVE PLAN 

ADOPTED BY THE BOARD OF DIRECTORS:
JUNE 28, 2018 
 APPROVED BY THE STOCKHOLDERS:
                     
 IPO
DATE:                      

1.    GENERAL. 

(a)    Successor to and Continuation of Prior Plan. The Plan is intended as the successor to and continuation
of the Tenable Holdings, Inc. 2016 Stock Incentive Plan, as amended and restated from time to time (the “Prior Plan”). From and after 12:01 a.m. Eastern time on the IPO Date, no additional stock awards will be granted under
the Prior Plan. All Awards granted on or after 12:01 a.m. Eastern Time on the IPO Date will be granted under this Plan. All stock awards granted under the Prior Plan will remain subject to the terms of the Prior Plan. 

(i)    Any shares that would otherwise remain available for future grants under the Prior Plan as of 12:01 a.m.
Eastern Time on the IPO Date (the “Prior Plan’s Available Reserve”) will cease to be available under the Prior Plan at such time. Instead, that number of shares of Common Stock equal to the Prior Plan’s Available
Reserve will be added to the Share Reserve (as further described in Section 3(a) below) and will be immediately available for grants and issuance pursuant to Stock Awards hereunder, up to the maximum number set forth in Section 3(a) below.

 (ii)    In addition, from and after 12:01 a.m. Eastern time on the IPO Date, any shares subject, at such time,
to outstanding stock awards granted under the Prior Plan, the Tenable Holdings, Inc. 2012 Stock Incentive Plan, as amended and restated from time to time and the Tenable Holdings, Inc. 2002 Stock Incentive Plan, as amended and restated from time to
time that (i) expire or terminate for any reason prior to exercise or settlement; (ii) are forfeited because of the failure to meet a contingency or condition required to vest such shares or otherwise return to the Company; or
(iii) are reacquired, withheld (or not issued) to satisfy a tax withholding obligation in connection with an award or to satisfy the purchase price or exercise price of a stock award (such shares the “Returning Shares”)
will immediately be added to the Share Reserve (as further described in Section 3(a) below) as and when such shares become Returning Shares, up to the maximum number set forth in Section 3(a) below. 

(b)    Eligible Award Recipients. Employees, Directors and Consultants are eligible to receive Awards. 

(c)    Available Awards. The Plan provides for the grant of the following types of Awards:
(i) Incentive Stock Options, (ii) Nonstatutory Stock Options, (iii) Stock Appreciation Rights (iv) Restricted Stock Awards, (v) Restricted Stock Unit Awards, (vi) Performance Stock Awards, (vii) Performance Cash
Awards, and (viii) Other Stock Awards. 
 (d)    Purpose. The Plan, through the granting of Awards,
is intended to help the Company secure and retain the services of eligible award recipients, provide incentives for such persons to exert maximum efforts for the success of the Company and any Affiliate and provide a means by which the eligible
recipients may benefit from increases in value of the Common Stock. 

 2.    ADMINISTRATION. 

(a)    Administration by Board. The Board will administer the Plan. The Board may delegate administration of
the Plan to a Committee or Committees, as provided in Section 2(c). 
 (b)    Powers of Board. The
Board will have the power, subject to, and within the limitations of, the express provisions of the Plan: 

(i)    To determine (A) who will be granted Awards; (B) when and how each Award will be granted;
(C) what type of Award will be granted; (D) the provisions of each Award (which need not be identical), including when a person will be permitted to exercise or otherwise receive cash or Common Stock under the Award; (E) the number of
shares of Common Stock subject to, or the cash value of, an Award; and (F) the Fair Market Value applicable to a Stock Award. 

(ii)    To construe and interpret the Plan and Awards granted under it, and to establish, amend and revoke rules
and regulations for administration of the Plan and Awards. The Board, in the exercise of these powers, may correct any defect, omission or inconsistency in the Plan or in any Award Agreement or in the written terms of a Performance Cash Award, in a
manner and to the extent it will deem necessary or expedient to make the Plan or Award fully effective. 

(iii)    To settle all controversies regarding the Plan and Awards granted under it. 

(iv)    To accelerate, in whole or in part, the time at which an Award may be exercised or vest (or the time at
which cash or shares of Common Stock may be issued in settlement thereof). 
 (v)    To suspend or terminate the
Plan at any time. Except as otherwise provided in the Plan or an Award Agreement, suspension or termination of the Plan will not materially impair a Participant’s rights under the Participant’s then-outstanding Award without the
Participant’s written consent except as provided in subsection (viii) below. 
 (vi)    To amend the
Plan in any respect the Board deems necessary or advisable, including, without limitation, by adopting amendments relating to Incentive Stock Options and certain nonqualified deferred compensation under Section 409A of the Code and/or bringing
the Plan or Awards granted under the Plan into compliance with the requirements for Incentive Stock Options or ensuring that they are exempt from or compliant with the requirements for nonqualified deferred compensation under Section 409A of
the Code, subject to the limitations, if any, of applicable law. If required by applicable law or listing requirements, and except as provided in Section 9(a) relating to Capitalization Adjustments, the Company will seek stockholder approval of
any amendment of the Plan that (A) materially increases the number of shares of Common Stock available for issuance under the Plan, (B) materially expands the class of individuals eligible to receive Awards under the Plan,
(C) materially increases the benefits accruing to Participants under the Plan, (D) materially reduces the price at which shares of Common Stock may be issued or purchased under the Plan, (E) materially extends the term of the Plan, or
(F) materially expands the types of Awards available for issuance under the Plan. Except as otherwise provided in the Plan or an Award Agreement, no amendment of the Plan will materially impair a Participant’s rights under an outstanding
Award without the Participant’s written consent. 
 (vii)    To submit any amendment to the Plan for
stockholder approval, including, but not limited to, amendments to the Plan intended to satisfy the requirements of (A) Section 422 of the Code regarding incentive stock options or (B) Rule
16b-3. 

  
 2 

 (viii)    To approve forms of Award Agreements for use under the Plan
and to amend the terms of any one or more Awards, including, but not limited to, amendments to provide terms more favorable to the Participant than previously provided in the Award Agreement, subject to any specified limits in the Plan that are not
subject to Board discretion; provided however, that a Participant’s rights under any Award will not be impaired by any such amendment unless (A) the Company requests the consent of the affected Participant, and (B) such
Participant consents in writing. Notwithstanding the foregoing, (1) a Participant’s rights will not be deemed to have been impaired by any such amendment if the Board, in its sole discretion, determines that the amendment, taken as a
whole, does not materially impair the Participant’s rights, and (2) subject to the limitations of applicable law, if any, the Board may amend the terms of any one or more Awards without the affected Participant’s consent (A) to
maintain the qualified status of the Award as an Incentive Stock Option under Section 422 of the Code; (B) to change the terms of an Incentive Stock Option, if such change results in impairment of the Award solely because it impairs the
qualified status of the Award as an Incentive Stock Option under Section 422 of the Code; (C) to clarify the manner of exemption from, or to bring the Award into compliance with, Section 409A of the Code; or (D) to comply with
other applicable laws or listing requirements. 
 (ix)    Generally, to exercise such powers and to perform such
acts as the Board deems necessary or expedient to promote the best interests of the Company and that are not in conflict with the provisions of the Plan or Awards. 

(x)    To adopt such procedures and sub-plans as are necessary or
appropriate to permit participation in the Plan by Employees, Directors or Consultants who are foreign nationals or employed outside the United States (provided that Board approval will not be necessary for immaterial modifications to the Plan or
any Award Agreement that are required for compliance with the laws of the relevant foreign jurisdiction). 

(xi)    To effect, with the consent of any adversely affected Participant, (A) the reduction of the exercise,
purchase or strike price of any outstanding Stock Award; (B) the cancellation of any outstanding Stock Award and the grant in substitution therefor of a new (1) Option or SAR, (2) Restricted Stock Award, (3) Restricted Stock Unit
Award, (4) Other Stock Award, (5) cash and/or (6) other valuable consideration determined by the Board, in its sole discretion, with any such substituted award (x) covering the same or a different number of shares of Common Stock
as the cancelled Stock Award and (y) granted under the Plan or another equity or compensatory plan of the Company; or (C) any other action that is treated as a repricing under generally accepted accounting principles. 

(c)    Delegation to Committee. 

(i)    General. The Board may delegate some or all of the administration of the Plan to a Committee or
Committees. If administration of the Plan is delegated to a Committee, the Committee will have, in connection with the administration of the Plan, the powers theretofore possessed by the Board that have been delegated to the Committee, including the
power to delegate to a subcommittee of the Committee any of the administrative powers the Committee is authorized to exercise (and references in this Plan to the Board will thereafter be to the Committee or subcommittee, as applicable). Any
delegation of administrative powers will be reflected in resolutions, not inconsistent with the provisions of the Plan, adopted from time to time by the Board or Committee (as applicable). The Committee may, at any time, abolish the subcommittee
and/or revest in the Committee any powers delegated to the subcommittee. The Board may retain the authority to concurrently administer the Plan with the Committee and may, at any time, revest in the Board some or all of the powers previously
delegated. 
 (ii)    Rule 16b-3 Compliance. The Committee may
consist solely of two or more Non-Employee Directors, in accordance with Rule 16b-3. 

  
 3 

 (d)    Delegation to an Officer. The Board may delegate
to one or more Officers the authority to do one or both of the following (i) designate Employees who are not Officers to be recipients of Options and SARs (and, to the extent permitted by applicable law, other Stock Awards) and, to the extent
permitted by applicable law, the terms of such Awards, and (ii) determine the number of shares of Common Stock to be subject to such Stock Awards granted to such Employees; provided, however, that the Board resolutions regarding such
delegation will specify the total number of shares of Common Stock that may be subject to the Stock Awards granted by such Officer and that such Officer may not grant a Stock Award to himself or herself. Any such Stock Awards will be granted on the
form of Stock Award Agreement most recently approved for use by the Committee or the Board, unless otherwise provided in the resolutions approving the delegation authority. The Board may not delegate authority to an Officer who is acting solely in
the capacity of an Officer (and not also as a Director) to determine the Fair Market Value pursuant to Section 13(w)(iii) below. 

(e)    Effect of Board’s Decision. All determinations, interpretations and constructions made by the
Board in good faith will not be subject to review by any person and will be final, binding and conclusive on all persons. 

3.    SHARES SUBJECT TO THE PLAN.  
 (a)    Share Reserve. Subject to Section 9(a)
relating to Capitalization Adjustments, and the following sentence regarding the annual increase, the aggregate number of shares of Common Stock that may be issued pursuant to Stock Awards will not exceed 31,520,894 shares (the “Share
Reserve”), which number is the sum of (i) 9,900,000 new shares, plus (ii) the number of shares subject to the Prior Plan’s Available Reserve plus (iii) the number of shares that are Returning Shares, as such
shares become available from time to time. In addition, the Share Reserve will automatically increase on January 1st of each year, for a period of not more than ten years, commencing on January 1st of the year following the year in which the IPO Date occurs and ending on (and including) January 1, 2028, in an amount equal to 5% of the total number of shares of Capital Stock outstanding on
December 31st of the preceding calendar year. Notwithstanding the foregoing, the Board may act prior to January 1st of a given year to provide that there will be no January 1st increase in the Share Reserve for such year or that the increase in the Share Reserve for such year will be a lesser number of shares of Common Stock than would otherwise occur pursuant to the
preceding sentence. 
 For clarity, the Share Reserve in this Section 3(a) is a limitation on the number of shares of Common Stock that
may be issued pursuant to the Plan. Accordingly, this Section 3(a) does not limit the granting of Stock Awards except as provided in Section 7(a). Shares may be issued in connection with a merger or acquisition as permitted by NASDAQ
Listing Rule 5635(c) or, if applicable, NYSE Listed Company Manual Section 303A.08, AMEX Company Guide Section 711 or other applicable rule, and such issuance will not reduce the number of shares available for issuance under the Plan. 

(b)    Reversion of Shares to the Share Reserve. If a Stock Award or any portion thereof (i) expires or
otherwise terminates without all of the shares covered by such Stock Award having been issued or (ii) is settled in cash (i.e., the Participant receives cash rather than stock), such expiration, termination or settlement will not reduce
(or otherwise offset) the number of shares of Common Stock that may be available for issuance under the Plan. If any shares of Common Stock issued pursuant to a Stock Award are forfeited back to or repurchased or reacquired by the Company for any
reason, including because of the failure to meet a contingency or condition required to vest such shares in the Participant, then the shares that are forfeited or repurchased or reacquired will revert to and again become available for issuance under
the Plan. Any shares reacquired by the Company in satisfaction of tax withholding obligations on a Stock Award or as consideration for the exercise or purchase price of a Stock Award will again become available for issuance under the Plan. 

  
 4 

 (c)    Incentive Stock Option Limit. Subject to the Share
Reserve and Section 9(a) relating to Capitalization Adjustments, the aggregate maximum number of shares of Common Stock that may be issued pursuant to the exercise of Incentive Stock Options will be 90,000,000 shares of Common Stock.  
 (d)    Source of Shares. The stock issuable under the
Plan will be shares of authorized but unissued or reacquired Common Stock, including shares repurchased by the Company on the open market or otherwise. 

4.    ELIGIBILITY. 

(a)    Eligibility for Specific Stock Awards. Incentive Stock Options may be granted only to employees of the
Company or a “parent corporation” or “subsidiary corporation” thereof (as such terms are defined in Sections 424(e) and 424(f) of the Code). Stock Awards other than Incentive Stock Options may be granted to Employees, Directors
and Consultants; provided, however, that Stock Awards may not be granted to Employees, Directors and Consultants who are providing Continuous Service only to any “parent” of the Company, as such term is defined in Rule 405 of the
Securities Act, unless (i) the stock underlying such Stock Awards is treated as “service recipient stock” under Section 409A of the Code (for example, because the Stock Awards are granted pursuant to a corporate transaction such
as a spin off transaction), (ii) the Company, in consultation with its legal counsel, has determined that such Stock Awards are otherwise exempt from Section 409A of the Code, or (iii) the Company, in consultation with its legal counsel,
has determined that such Stock Awards comply with the distribution requirements of Section 409A of the Code. 

(b)    Ten Percent Stockholders. A Ten Percent Stockholder will not be granted an Incentive Stock Option
unless the exercise price of such Option is at least 110% of the Fair Market Value on the date of grant and the Option is not exercisable after the expiration of five years from the date of grant. 

5.    PROVISIONS RELATING TO OPTIONS AND
STOCK APPRECIATION RIGHTS. 
 Each Option or SAR will be in such form and will contain such
terms and conditions as the Board deems appropriate. All Options will be separately designated Incentive Stock Options or Nonstatutory Stock Options at the time of grant, and, if certificates are issued, a separate certificate or certificates will
be issued for shares of Common Stock purchased on exercise of each type of Option. If an Option is not specifically designated as an Incentive Stock Option, or if an Option is designated as an Incentive Stock Option but some portion or all of the
Option fails to qualify as an Incentive Stock Option under the applicable rules, then the Option (or portion thereof) will be a Nonstatutory Stock Option. The provisions of separate Options or SARs need not be identical; provided, however,
that each Award Agreement will conform to (through incorporation of provisions hereof by reference in the applicable Award Agreement or otherwise) the substance of each of the following provisions: 

(a)    Term. Subject to the provisions of Section 4(b) regarding Ten Percent Stockholders, no Option or
SAR will be exercisable after the expiration of ten (10) years from the date of its grant or such shorter period specified in the Award Agreement. 

  
 5 

 (b)    Exercise Price. Subject to the provisions of
Section 4(b) regarding Ten Percent Stockholders, the exercise or strike price of each Option or SAR will be not less than 100% of the Fair Market Value of the Common Stock subject to the Option or SAR on the date the Award is granted.
Notwithstanding the foregoing, an Option or SAR may be granted with an exercise or strike price lower than 100% of the Fair Market Value of the Common Stock subject to the Award if such Award is granted pursuant to an assumption of or substitution
for another option or stock appreciation right pursuant to a corporate transaction and in a manner consistent with the provisions of Section 409A of the Code and, if applicable, Section 424(a) of the Code. Each SAR will be denominated in
shares of Common Stock equivalents. 
 (c)    Purchase Price for Options. The purchase price of Common
Stock acquired pursuant to the exercise of an Option may be paid, to the extent permitted by applicable law and as determined by the Board in its sole discretion, by any combination of the methods of payment set forth below. The Board will have the
authority to grant Options that do not permit all of the following methods of payment (or otherwise restrict the ability to use certain methods) and to grant Options that require the consent of the Company to use a particular method of payment. The
permitted methods of payment are as follows: 
 (i)    by cash, check, bank draft or money order payable to the
Company; 
 (ii)    pursuant to a program developed under Regulation T as promulgated by the Federal Reserve
Board that, prior to the issuance of the stock subject to the Option, results in either the receipt of cash (or check) by the Company or the receipt of irrevocable instructions to pay the aggregate exercise price to the Company from the sales
proceeds; 
 (iii)    by delivery to the Company (either by actual delivery or attestation) of shares of Common
Stock; 
 (iv)    if an Option is a Nonstatutory Stock Option, by a “net exercise” arrangement pursuant
to which the Company will reduce the number of shares of Common Stock issuable upon exercise by the largest whole number of shares with a Fair Market Value that does not exceed the aggregate exercise price; provided, however, that the Company
will accept a cash or other payment from the Participant to the extent of any remaining balance of the aggregate exercise price not satisfied by such reduction in the number of whole shares to be issued. Shares of Common Stock will no longer be
subject to an Option and will not be exercisable thereafter to the extent that (A) shares issuable upon exercise are used to pay the exercise price pursuant to the “net exercise,” (B) shares are delivered to the Participant as a
result of such exercise, and (C) shares are withheld to satisfy tax withholding obligations; or 
 (v)    in
any other form of legal consideration that may be acceptable to the Board and specified in the applicable Award Agreement. 

(d)    Exercise and Payment of a SAR. To exercise any outstanding SAR, the Participant must provide written
notice of exercise to the Company in compliance with the provisions of the Stock Appreciation Right Agreement evidencing such SAR. The appreciation distribution payable on the exercise of a SAR will be not greater than an amount equal to the excess
of (A) the aggregate Fair Market Value (on the date of the exercise of the SAR) of a number of shares of Common Stock equal to the number of Common Stock equivalents in which the Participant is vested under such SAR, and with respect to which
the Participant is exercising the SAR on such date, over (B) the aggregate strike price of 

  
 6 

 
the number of Common Stock equivalents with respect to which the Participant is exercising the SAR on such date. The appreciation distribution may be paid in Common Stock, in cash, in any
combination of the two or in any other form of consideration, as determined by the Board and contained in the Award Agreement evidencing such SAR. 

(e)    Transferability of Options and SARs. The Board may, in its sole discretion, impose such limitations
on the transferability of Options and SARs as the Board will determine. In the absence of such a determination by the Board to the contrary, the following restrictions on the transferability of Options and SARs will apply: 

(i)    Restrictions on Transfer. An Option or SAR will not be transferable except by will or by the laws of
descent and distribution (or pursuant to subsections (ii) and (iii) below), and will be exercisable during the lifetime of the Participant only by the Participant. The Board may permit transfer of the Option or SAR in a manner that is not
prohibited by applicable tax and securities laws. Except as explicitly provided herein, neither an Option nor a SAR may be transferred for consideration. 

(ii)    Domestic Relations Orders. Subject to the approval of the Board or a duly authorized Officer, an
Option or SAR may be transferred pursuant to the terms of a domestic relations order, official marital settlement agreement or other divorce or separation instrument as permitted by Treasury Regulation
Section 1.421-1(b)(2). If an Option is an Incentive Stock Option, such Option may be deemed to be a Nonstatutory Stock Option as a result of such transfer. 

(iii)    Beneficiary Designation. Subject to the approval of the Board or a duly authorized Officer, a
Participant may, by delivering written notice to the Company, in a form approved by the Company (or the designated broker), designate a third party who, on the death of the Participant, will thereafter be entitled to exercise the Option or SAR and
receive the Common Stock or other consideration resulting from such exercise. In the absence of such a designation, upon the death of the Participant, the executor or administrator of the Participant’s estate will be entitled to exercise the
Option or SAR and receive the Common Stock or other consideration resulting from such exercise. However, the Company may prohibit designation of a beneficiary at any time, including due to any conclusion by the Company that such designation would be
inconsistent with the provisions of applicable laws. 
 (f)    Vesting Generally. The total number of
shares of Common Stock subject to an Option or SAR may vest and become exercisable in periodic installments that may or may not be equal. The Option or SAR may be subject to such other terms and conditions on the time or times when it may or may not
be exercised (which may be based on the satisfaction of Performance Goals or other criteria) as the Board may deem appropriate. The vesting provisions of individual Options or SARs may vary. The provisions of this Section 5(f) are subject to
any Option or SAR provisions governing the minimum number of shares of Common Stock as to which an Option or SAR may be exercised. 

(g)    Termination of Continuous Service. Except as otherwise provided in the applicable Award Agreement or
other agreement between the Participant and the Company, if a Participant’s Continuous Service terminates (other than for Cause and other than upon the Participant’s death or Disability), the Participant may exercise his or her Option or
SAR (to the extent that the Participant was entitled to exercise such Award as of the date of termination of Continuous Service) within the period of time ending on the earlier of (i) the date that is three (3) months following the
termination of the Participant’s Continuous Service (or such longer or shorter period specified in the applicable Award Agreement) and (ii) the expiration of the term of the Option or SAR as set forth in the Award Agreement. If, after
termination of Continuous Service, the Participant does not exercise his or her Option or SAR (as applicable) within the applicable time frame, the Option or SAR will terminate. 

  
 7 

 (h)    Extension of Termination Date. Except as otherwise
provided in the applicable Award Agreement or other written agreement between the Participant and the Company, tf the exercise of an Option or SAR following the termination of the Participant’s Continuous Service (other than for Cause and other
than upon the Participant’s death or Disability) would be prohibited at any time solely because the issuance of shares of Common Stock would violate the registration requirements under the Securities Act, then the Option or SAR will terminate
on the earlier of (i) the expiration of a total period of time (that need not be consecutive) equal to the applicable post termination exercise period after the termination of the Participant’s Continuous Service during which the exercise
of the Option or SAR would not be in violation of such registration requirements, and (ii) the expiration of the term of the Option or SAR as set forth in the applicable Award Agreement. In addition, unless otherwise provided in a
Participant’s Award Agreement, if the sale of any Common Stock received on exercise of an Option or SAR following the termination of the Participant’s Continuous Service (other than for Cause) would violate the Company’s insider
trading policy, then the Option or SAR will terminate on the earlier of (i) the expiration of a period of months (that need not be consecutive) equal to the applicable post-termination exercise period after the termination of the
Participant’s Continuous Service during which the sale of the Common Stock received upon exercise of the Option or SAR would not be in violation of the Company’s insider trading policy, or (ii) the expiration of the term of the Option
or SAR as set forth in the applicable Award Agreement. 
 (i)    Disability of Participant. Except as
otherwise provided in the applicable Award Agreement or other agreement between the Participant and the Company, if a Participant’s Continuous Service terminates as a result of the Participant’s Disability, the Participant may exercise his
or her Option or SAR (to the extent that the Participant was entitled to exercise such Option or SAR as of the date of termination of Continuous Service), but only within such period of time ending on the earlier of (i) the date twelve
(12) months following such termination of Continuous Service (or such longer or shorter period specified in the Award Agreement) and (ii) the expiration of the term of the Option or SAR as set forth in the Award Agreement. If, after
termination of Continuous Service, the Participant does not exercise his or her Option or SAR within the applicable time frame, the Option or SAR (as applicable) will terminate. 

(j)    Death of Participant. Except as otherwise provided in the applicable Award Agreement or other
agreement between the Participant and the Company, if (i) a Participant’s Continuous Service terminates as a result of the Participant’s death, or (ii) the Participant dies within the period (if any) specified in the Award
Agreement for exercisability after the termination of the Participant’s Continuous Service for a reason other than death, then the Option or SAR may be exercised (to the extent the Participant was entitled to exercise such Option or SAR as of
the date of death) by the Participant’s estate, by a person who acquired the right to exercise the Option or SAR by bequest or inheritance or by a person designated to exercise the Option or SAR upon the Participant’s death, but only
within the period ending on the earlier of (i) the date eighteen (18) months following the date of death (or such longer or shorter period specified in the Award Agreement) and (ii) the expiration of the term of such Option or SAR as
set forth in the Award Agreement. If, after the Participant’s death, the Option or SAR is not exercised within the applicable time frame, the Option or SAR (as applicable) will terminate. 

(k)    Termination for Cause. Except as explicitly provided otherwise in a Participant’s Award
Agreement or other individual written agreement between the Company or any Affiliate and the Participant, if a Participant’s Continuous Service is terminated for Cause, the Option or SAR will terminate immediately upon such Participant’s
termination of Continuous Service, and the Participant will be prohibited from exercising his or her Option or SAR from and after the time of such termination of Continuous Service. 

  
 8 

 (l)    Non-Exempt
Employees. If an Option or SAR is granted to an Employee who is a non-exempt employee for purposes of the Fair Labor Standards Act of 1938, as amended, the Option or SAR will not be first exercisable for
any shares of Common Stock until at least six (6) months following the date of grant of the Option or SAR (although the Award may vest prior to such date). Consistent with the provisions of the Worker Economic Opportunity Act, (i) if such non-exempt Employee dies or suffers a Disability, (ii) upon a Corporate Transaction in which such Option or SAR is not assumed, continued, or substituted, (iii) upon a Change in Control, or (iv) upon
the Participant’s retirement (as such term may be defined in the Participant’s Award Agreement, in another agreement between the Participant and the Company, or, if no such definition, in accordance with the Company’s then current
employment policies and guidelines), the vested portion of any Options and SARs may be exercised earlier than six (6) months following the date of grant. The foregoing provision is intended to operate so that any income derived by a non-exempt employee in connection with the exercise or vesting of an Option or SAR will be exempt from his or her regular rate of pay. To the extent permitted and/or required for compliance with the Worker Economic
Opportunity Act to ensure that any income derived by a non-exempt employee in connection with the exercise, vesting or issuance of any shares under any other Stock Award will be exempt from the employee’s
regular rate of pay, the provisions of this Section 5(l) will apply to all Stock Awards and are hereby incorporated by reference into such Stock Award Agreements. 

6.    PROVISIONS OF STOCK AWARDS OTHER THAN
OPTIONS AND SARS. 
 (a)    Restricted Stock Awards. Each
Restricted Stock Award Agreement will be in such form and will contain such terms and conditions as the Board deems appropriate. To the extent consistent with the Company’s bylaws, at the Board’s election, shares of Common Stock may be
(i) held in book entry form subject to the Company’s instructions until any restrictions relating to the Restricted Stock Award lapse; or (ii) evidenced by a certificate, which certificate will be held in such form and manner as
determined by the Board. The terms and conditions of Restricted Stock Award Agreements may change from time to time, and the terms and conditions of separate Restricted Stock Award Agreements need not be identical. Each Restricted Stock Award
Agreement will conform to (through incorporation of the provisions hereof by reference in the agreement or otherwise) the substance of each of the following provisions: 

(i)    Consideration. A Restricted Stock Award may be awarded in consideration for (A) cash, check,
bank draft or money order payable to the Company, (B) past or future services to the Company or an Affiliate, or (C) any other form of legal consideration that may be acceptable to the Board, in its sole discretion, and permissible under
applicable law. 
 (ii)    Vesting. Shares of Common Stock awarded under the Restricted Stock Award
Agreement may be subject to forfeiture to the Company in accordance with a vesting schedule to be determined by the Board. 

(iii)    Termination of Participant’s Continuous Service. If a Participant’s Continuous Service
terminates, the Company may receive through a forfeiture condition or a repurchase right any or all of the shares of Common Stock held by the Participant as of the date of termination of Continuous Service under the terms of the Restricted Stock
Award Agreement. 
 (iv)    Transferability. Rights to acquire shares of Common Stock under the Restricted
Stock Award Agreement will be transferable by the Participant only upon such terms and conditions as are set forth in the Restricted Stock Award Agreement, as the Board will determine in its sole discretion, so long as Common Stock awarded under the
Restricted Stock Award Agreement remains subject to the terms of the Restricted Stock Award Agreement. 

  
 9 

 (v)    Dividends. A Restricted Stock Award Agreement may
provide that any dividends paid on Restricted Stock will be subject to the same vesting and forfeiture restrictions as apply to the shares subject to the Restricted Stock Award to which they relate. 

(b)    Restricted Stock Unit Awards. Each Restricted Stock Unit Award Agreement will be in such form and
will contain such terms and conditions as the Board deems appropriate. The terms and conditions of Restricted Stock Unit Award Agreements may change from time to time, and the terms and conditions of separate Restricted Stock Unit Award Agreements
need not be identical. Each Restricted Stock Unit Award Agreement will conform to (through incorporation of the provisions hereof by reference in the Agreement or otherwise) the substance of each of the following provisions: 

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

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

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

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

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

(vi)    Termination of Participant’s Continuous Service. Except as otherwise provided in
the applicable Restricted Stock Unit Award Agreement or other written agreement between a Participant and the Company or an Affiliate, such portion of the Restricted Stock Unit Award that has not vested will be forfeited upon the Participant’s
termination of Continuous Service. 
 (c)    Performance Awards. 

(i)    Performance Stock Awards. A Performance Stock Award is a Stock Award that is payable (including that
may be granted, may vest or may be exercised) contingent upon the attainment during a Performance Period of certain Performance Goals. A Performance Stock Award may, but need not, require the Participant’s completion of a specified period of
Continuous Service. The length of any 

  
 10 

 
Performance Period, the Performance Goals to be achieved during the Performance Period, and the measure of whether and to what degree such Performance Goals have been attained will be
conclusively determined by the Board or Committee , in its sole discretion. In addition, to the extent permitted by applicable law and the applicable Award Agreement, the Board or the Committee may determine that cash may be used in payment of
Performance Stock Awards. 
 (ii)    Performance Cash Awards. A Performance Cash Award is a cash award
that is payable contingent upon the attainment during a Performance Period of certain Performance Goals. A Performance Cash Award may also require the completion of a specified period of Continuous Service. At the time of grant of a Performance Cash
Award, the length of any Performance Period, the Performance Goals to be achieved during the Performance Period, and the measure of whether and to what degree such Performance Goals have been attained will be conclusively determined by the Board or
Committee, in its sole discretion. The Board or Committee may specify the form of payment of Performance Cash Awards, which may be cash or other property, or may provide for a Participant to have the option for his or her Performance Cash Award, or
such portion thereof as the Board may specify, to be paid in whole or in part in cash or other property. 

(iii)    Board Discretion. The Board retains the discretion to adjust or eliminate the compensation or
economic benefit due upon attainment of Performance Goals and to define the manner of calculating the Performance Criteria it selects to use for a Performance Period. Partial achievement of the specified criteria may result in the payment or vesting
corresponding to the degree of achievement as specified in the Stock Award Agreement or the written terms of a Performance Cash Award. 

(d)    Other Stock Awards. Other forms of Stock Awards valued in whole or in part by reference to, or
otherwise based on, Common Stock, including the appreciation in value thereof (e.g., options or stock rights with an exercise price or strike price less than 100% of the Fair Market Value of the Common Stock at the time of grant) may be granted
either alone or in addition to Stock Awards provided for under Section 5 and the preceding provisions of this Section 6. Subject to the provisions of the Plan, the Board will have sole and complete authority to determine the persons to
whom and the time or times at which such Other Stock Awards will be granted, the number of shares of Common Stock (or the cash equivalent thereof) to be granted pursuant to such Other Stock Awards and all other terms and conditions of such Other
Stock Awards. 
 7.    COVENANTS OF THE COMPANY. 

(a)    Availability of Shares. The Company will keep available at all times the number of shares of Common
Stock reasonably required to satisfy then-outstanding Stock Awards. 
 (b)    Securities Law Compliance.
The Company will seek to obtain from each regulatory commission or agency having jurisdiction over the Plan, as necessary, such authority as may be required to grant Stock Awards and to issue and sell shares of Common Stock upon exercise or vesting
of the Stock Awards; provided, however, that this undertaking will not require the Company to register under the Securities Act or other securities or applicable laws, the Plan, any Stock Award or any Common Stock issued or issuable pursuant
to any such Stock Award. If, after reasonable efforts and at a reasonable cost, the Company is unable to obtain from any such regulatory commission or agency the authority that counsel for the Company deems necessary or advisable for the lawful
issuance and sale of Common Stock under the Plan, the Company will be relieved from any liability for failure to issue and sell Common Stock upon exercise or vesting of such Stock Awards unless and until such authority is obtained. A Participant
will not be eligible for the grant of an Award or the subsequent issuance of cash or Common Stock pursuant to the Award if such grant or issuance would be in violation of any applicable securities law. 

  
 11 

 (c)    No Obligation to Notify or Minimize Taxes. The Company
will have no duty or obligation to any Participant to advise such holder as to the tax treatment or time or manner of exercising such Stock Award. Furthermore, the Company will have no duty or obligation to warn or otherwise advise such holder of a
pending termination or expiration of an Award or a possible period in which the Award may not be exercised. The Company has no duty or obligation to minimize the tax consequences of an Award to the holder of such Award. 

8.    MISCELLANEOUS. 

(a)    Use of Proceeds from Sales of Common Stock. Proceeds from the sale of shares of Common Stock pursuant
to Stock Awards will constitute general funds of the Company. 
 (b)    Corporate Action Constituting Grant of
Awards. Corporate action constituting a grant by the Company of an Award to any Participant will be deemed completed as of the date of such corporate action, unless otherwise determined by the Board, regardless of when the instrument,
certificate, or letter evidencing the Award is communicated to, or actually received or accepted by, the Participant. In the event that the corporate records (e.g., Board consents, resolutions or minutes) documenting the corporate action approving
the grant contain terms (e.g., exercise price, vesting schedule or number of shares) that are inconsistent with those in the Award Agreement or related grant documents as a result of a clerical error in the papering of the Award Agreement or related
grant documents, the corporate records will control and the Participant will have no legally binding right to the incorrect term in the Award Agreement or related grant documents. 

(c)    Stockholder Rights. No Participant will be deemed to be the holder of, or to have any of the rights
of a holder with respect to, any shares of Common Stock subject to an Award unless and until (i) such Participant has satisfied all requirements for exercise of, or the issuance of shares of Common Stock under, the Award pursuant to its terms,
and (ii) the issuance of the Common Stock subject to such Award has been entered into the books and records of the Company. 

(d)    No Employment or Other Service Rights. Nothing in the Plan, any Award Agreement or any other
instrument executed thereunder or in connection with any Award granted pursuant thereto will confer upon any Participant any right to continue to serve the Company or an Affiliate in the capacity in effect at the time the Award was granted or will
affect the right of the Company or an Affiliate to terminate (i) the employment of an Employee with or without notice and with or without cause, (ii) the service of a Consultant pursuant to the terms of such Consultant’s agreement
with the Company or an Affiliate, or (iii) the service of a Director pursuant to the bylaws of the Company or an Affiliate, and any applicable provisions of the corporate law of the state or foreign jurisdiction in which the Company or the
Affiliate is domiciled or incorporated, as the case may be. 
 (e)    Change in Time Commitment. In the
event a Participant’s regular level of time commitment in the performance of his or her services for the Company and any Affiliates is reduced (for example, and without limitation, if the Participant is an Employee of the Company and the
Employee has a change in status from a full-time Employee to a part-time Employee or takes an extended leave of absence) after the date of grant of any Award to the Participant, the Board has the right in its sole discretion to (x) make a
corresponding reduction in the number of shares or cash amount subject to any portion of such Award that is scheduled to vest or become payable after the date of such change in time commitment, and (y) in lieu of or in combination with such a
reduction, extend the vesting or payment schedule applicable to such Award. In the event of any such reduction, the Participant will have no right with respect to any portion of the Award that is so reduced or extended. 

  
 12 

 (f)    Incentive Stock Option Limitations. To the extent that
the aggregate Fair Market Value (determined at the time of grant) of Common Stock with respect to which Incentive Stock Options are exercisable for the first time by any Optionholder during any calendar year (under all plans of the Company and any
Affiliates) exceeds $100,000 (or such other limit established in the Code) or otherwise does not comply with the rules governing Incentive Stock Options, the Options or portions thereof that exceed such limit (according to the order in which they
were granted) or otherwise do not comply with such rules will be treated as Nonstatutory Stock Options, notwithstanding any contrary provision of the applicable Option Agreement(s). 

(g)    Investment Assurances. The Company may require a Participant, as a condition of exercising or
acquiring Common Stock under any Award, (i) to give written assurances satisfactory to the Company as to the Participant’s knowledge and experience in financial and business matters and/or to employ a purchaser representative reasonably
satisfactory to the Company who is knowledgeable and experienced in financial and business matters and that such Participant is capable of evaluating, alone or together with the purchaser representative, the merits and risks of exercising the Award;
and (ii) to give written assurances satisfactory to the Company stating that the Participant is acquiring Common Stock subject to the Award for the Participant’s own account and not with any present intention of selling or otherwise
distributing the Common Stock. The foregoing requirements, and any assurances given pursuant to such requirements, will be inoperative if (A) the issuance of the shares upon the exercise or acquisition of Common Stock under the Stock Award has
been registered under a then currently effective registration statement under the Securities Act, or (B) as to any particular requirement, a determination is made by counsel for the Company that such requirement need not be met in the
circumstances under the then applicable securities laws. The Company may, upon advice of counsel to the Company, place legends on stock certificates issued under the Plan as such counsel deems necessary or appropriate in order to comply with
applicable securities laws, including, but not limited to, legends restricting the transfer of the Common Stock. 

(h)    Withholding Obligations. Unless prohibited by the terms of an Award Agreement, the Company may, in
its sole discretion, satisfy any federal, state or local tax withholding obligation relating to an Award by any of the following means or by a combination of such means: (i) causing the Participant to tender a cash payment;
(ii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to the Participant in connection with the Stock Award; provided, however, that no shares of Common Stock are withheld with a value
exceeding the maximum amount of tax required to be withheld by law (or such lesser amount as may be necessary to avoid classification of the Stock Award as a liability for financial accounting purposes); (iii) withholding cash from an Award settled
in cash; (iv) withholding payment from any amounts otherwise payable to the Participant; or (v) by such other method as may be set forth in the Award Agreement. 

(i)    Electronic Delivery. Any reference herein to a “written” agreement or document will include
any agreement or document delivered electronically, filed publicly at www.sec.gov (or any successor website thereto) or posted on the Company’s intranet (or other shared electronic medium controlled by the Company to which the Participant has
access). 
 (j)    Deferrals. To the extent permitted by applicable law, the Board, in its sole
discretion, may determine that the delivery of Common Stock or the payment of cash, upon the exercise, vesting or settlement of all or a portion of any Award may be deferred and may establish programs and procedures for deferral elections to be made
by Participants. Deferrals by Participants will be made in accordance with Section 409A of the Code. Consistent with Section 409A of the Code, the Board may provide for distributions while a Participant is still an employee or otherwise
providing services to the Company. The Board is authorized to make deferrals of Awards and determine when, and in what annual percentages, Participants may receive payments, including lump sum payments, following the Participant’s termination
of Continuous Service, and implement such other terms and conditions consistent with the provisions of the Plan and in accordance with applicable law. 

  
 13 

 (k)    Clawback/Recovery. All Awards granted under the Plan
will be subject to recoupment in accordance with any clawback policy that the Company is required to adopt pursuant to the listing standards of any national securities exchange or association on which the Company’s securities are listed or as
is otherwise required by the Dodd-Frank Wall Street Reform and Consumer Protection Act or other applicable law. In addition, the Board may impose such other clawback, recovery or recoupment provisions in an Award Agreement as the Board determines
necessary or appropriate, including but not limited to a reacquisition right in respect of previously acquired shares of Common Stock or other cash or property upon the occurrence of an event constituting Cause. No recovery of compensation under
such a clawback policy will be an event giving rise to a right to voluntary terminate employment upon a “resignation for good reason,” or for a “constructive termination” or any similar term under any plan of or agreement with
the Company. 
 (l)    Compliance with Section 409A of the Code. Unless otherwise
expressly provided for in an Award Agreement, the Plan and Award Agreements will be interpreted to the greatest extent possible in a manner that makes the Plan and the Awards granted hereunder exempt from Section 409A of the Code, and, to the
extent not so exempt, in compliance with Section 409A of the Code. If the Board determines that any Award granted hereunder is not exempt from and is therefore subject to Section 409A of the Code, the Award Agreement evidencing such Award
will incorporate the terms and conditions necessary to avoid the consequences specified in Section 409A(a)(1) of the Code, and to the extent an Award Agreement is silent on terms necessary for compliance, such terms are hereby incorporated by
reference into the Award Agreement. Notwithstanding anything to the contrary in this Plan (and unless the Award Agreement specifically provides otherwise), if the shares of Common Stock are publicly traded, and if a Participant holding an Award that
constitutes “deferred compensation” under Section 409A of the Code is a “specified employee” for purposes of Section 409A of the Code, no distribution or payment of any amount that is due because of a “separation
from service” (as defined in Section 409A of the Code without regard to alternative definitions thereunder) will be issued or paid before the date that is six months following the date of such Participant’s “separation from
service” or, if earlier, the date of the Participant’s death, unless such distribution or payment can be made in a manner that complies with Section 409A of the Code, and any amounts so deferred will be paid in a lump sum on the day
after such six month period elapses, with the balance paid thereafter on the original schedule. 
 9.    ADJUSTMENTS
UPON CHANGES IN COMMON STOCK; OTHER CORPORATE EVENTS. 

(a)    Capitalization Adjustments. In the event of a Capitalization Adjustment, the Board will appropriately
and proportionately adjust: (i) the class(es) and maximum number of securities subject to the Plan pursuant to Section 3(a), (ii) the class(es) and maximum number of securities by which the share reserve is to increase automatically each
year pursuant to Section 3(a), (iii) the class(es) and maximum number of securities that may be issued pursuant to the exercise of Incentive Stock Options pursuant to Section 3(c), and (iv) the class(es) and number of securities and
price per share of stock subject to outstanding Stock Awards. The Board will make such adjustments, and its determination will be final, binding and conclusive. 

(b)    Dissolution. Except as otherwise provided in the Stock Award Agreement, in the event of a Dissolution
of the Company, all outstanding Stock Awards (other than Stock Awards consisting of vested and outstanding shares of Common Stock not subject to a forfeiture condition or the Company’s right of repurchase) will terminate immediately prior to
the completion of such Dissolution, and the shares of Common Stock subject to the Company’s repurchase rights or subject to a forfeiture condition 

  
 14 

 
may be repurchased or reacquired by the Company notwithstanding the fact that the holder of such Stock Award is providing Continuous Service; provided, however, that the Board may, in its
sole discretion, cause some or all Stock Awards to become fully vested, exercisable and/or no longer subject to repurchase or forfeiture (to the extent such Stock Awards have not previously expired or terminated) before the Dissolution is completed
but contingent on its completion. 
 (c)    Transaction. The following provisions will apply to Stock
Awards in the event of a Transaction unless otherwise provided in the instrument evidencing the Stock Award or any other written agreement between the Company or any Affiliate and the Participant or unless otherwise expressly provided by the Board
at the time of grant of a Stock Award. In the event of a Transaction, then, notwithstanding any other provision of the Plan, the Board may take one or more of the following actions with respect to Stock Awards, contingent upon the closing or
completion of the Transaction: 
 (i)    arrange for the surviving corporation or acquiring corporation (or the
surviving or acquiring corporation’s parent company) to assume or continue the Stock Award or to substitute a similar stock award for the Stock Award (including, but not limited to, an award to acquire the same consideration paid to the
stockholders of the Company pursuant to the Transaction); 
 (ii)    arrange for the assignment of any
reacquisition or repurchase rights held by the Company in respect of Common Stock issued pursuant to the Stock Award to the surviving corporation or acquiring corporation (or the surviving or acquiring corporation’s parent company); 

(iii)    accelerate the vesting, in whole or in part, of the Stock Award (and, if applicable, the time at which the
Stock Award may be exercised) to a date prior to the effective time of such Transaction as the Board determines (or, if the Board does not determine such a date, to the date that is five days prior to the effective date of the Transaction), with
such Stock Award terminating if not exercised (if applicable) at or prior to the effective time of the Transaction; provided, however, that the Board may require Participants to complete and deliver to the Company a notice of exercise before
the effective date of a Transaction, which exercise is contingent upon the effectiveness of such Transaction; 

(iv)    arrange for the lapse, in whole or in part, of any reacquisition or repurchase rights held by the Company
with respect to the Stock Award; 
 (v)    cancel or arrange for the cancellation of the Stock Award, to the
extent not vested or not exercised prior to the effective time of the Transaction, in exchange for such cash consideration, if any, as the Board, in its sole discretion, may consider appropriate; and 

(vi)    make a payment, in such form as may be determined by the Board equal to the excess, if any, of (A) the
value of the property the Participant would have received upon the exercise of the Stock Award immediately prior to the effective time of the Transaction, over (B) any exercise price payable by such holder in connection with such exercise. For
clarity, this payment may be $0 if the value of the property is equal to or less than the exercise price. Payments under this provision may be delayed to the same extent that payment of consideration to the holders of the Company’s Common Stock
in connection with the Transaction is delayed as a result of escrows, earn outs, holdbacks or any other contingencies. 
 The Board need not
take the same action or actions with respect to all Stock Awards or portions thereof or with respect to all Participants. The Board may take different actions with respect to the vested and unvested portions of a Stock Award. 

  
 15 

 (d)    Change in Control. A Stock Award may be subject to
additional acceleration of vesting and exercisability upon or after a Change in Control as may be provided in the Stock Award Agreement for such Stock Award or as may be provided in any other written agreement between the Company or any Affiliate
and the Participant, but in the absence of such provision, no such acceleration will occur. 
 10.    PLAN
TERM; EARLIER TERMINATION OR SUSPENSION OF THE PLAN. 

The Board may suspend or terminate the Plan at any time. No Incentive Stock Options may be granted after the tenth anniversary of the earlier
of (i) the date the Plan is adopted by the Board (the “Adoption Date”), or (ii) the date the Plan is approved by the stockholders of the Company. No Awards may be granted under the Plan while the Plan is suspended
or after it is terminated. 
 11.    EXISTENCE OF THE PLAN;
TIMING OF FIRST GRANT OR EXERCISE. 
 The Plan
will come into existence on the Adoption Date; provided, however, that no Stock Award may be granted prior to the IPO Date. In addition, no Stock Award will be exercised (or, in the case of a Restricted Stock Award, Restricted Stock Unit
Award, Performance Share Award, or Other Stock Award, no Stock Award will be granted) and no Performance Cash Award will be settled unless and until the Plan has been approved by the stockholders of the Company, which approval will be within 12
months after the date the Plan is adopted by the Board. 
 12.    CHOICE OF LAW.

 The laws of the State of Delaware will govern all questions concerning the construction, validity and interpretation of this Plan,
without regard to that state’s conflict of laws rules. 
 13.    DEFINITIONS. As used in the Plan, the
following definitions will apply to the capitalized terms indicated below: 

(a)    “Affiliate” means, at the time of determination, any “parent” or
“subsidiary” of the Company as such terms are defined in Rule 405 of the Securities Act. The Board will have the authority to determine the time or times at which “parent” or “subsidiary” status is determined within the
foregoing definition. 
 (b)    “Award” means a Stock Award or a Performance Cash Award.

 (c)    “Award Agreement” means a written agreement between the Company and a
Participant evidencing the terms and conditions of an Award. 
 (d)    “Board” means the
Board of Directors of the Company. 
 (e)    “Capital Stock” means each and every class
of common stock of the Company, regardless of the number of votes per share. 
 (f)    “Capitalization
Adjustment” means any change that is made in, or other events that occur with respect to, the Common Stock subject to the Plan or subject to any Stock Award after the Adoption Date without the receipt of consideration by the Company
through merger, consolidation, reorganization, recapitalization, reincorporation, stock dividend, dividend in property other than cash, large nonrecurring cash dividend, stock split, reverse stock split, liquidating dividend, combination of shares,
exchange of shares, change in corporate structure or any similar equity restructuring transaction, as that term is used in Statement of Financial Accounting Standards Board Accounting Standards Codification Topic 718 (or any successor thereto).
Notwithstanding the foregoing, the conversion of any convertible securities of the Company will not be treated as a Capitalization Adjustment. 

  
 16 

 (g)    “Cause” shall have the
meaning ascribed to such term in any written agreement between the Participant and the Company or any of its Affiliates defining such term and, in the absence of such agreement, such term means, with respect to a Participant, the occurrence of any
of the following events: (i) the Participant’s conviction of or indictment for any crime (whether or not involving the Company or any of its Affiliates) (A) constituting a felony or (B) that has, or could reasonably be expected
to result in, an adverse impact on the performance of the Participant’s duties to the Company or any of its Affiliates, or otherwise has, or could reasonably be expected to result in, an adverse impact on the business or reputation of the
Company or any of its Affiliates; (ii) conduct of the Participant, in connection with his or her employment or service, that has resulted, or could reasonably be expected to result, in material injury to the business or reputation of the
Company or any of its Affiliates; (iii) any material violation of the policies of the Company or any of its Affiliates, including, but not limited to, those relating to sexual harassment or the disclosure or misuse of confidential information,
or those set forth in the manuals or statements of policy of the Company or any of its Affiliates; (iv) the Participant’s act(s) of gross negligence or willful misconduct in the course of his or her employment or service with the Company
or any of its Affiliates; (v) misappropriation by the Participant of any material assets or any business opportunities of the Company or any of its Affiliates; (vi) embezzlement or fraud committed by the Participant, at the
Participant’s direction, or with the Participant’s prior actual knowledge; or (vii) willful neglect in the performance of the Participant’s duties for the Company or any of its Affiliates or willful or repeated failure or refusal
to perform such duties; provided, however, that with respect to any termination of Continuous Service for Cause relying on clause (ii), (iii) or (vii) of this sentence, to the extent that such act or acts or failure or failures to act are
curable, the Participant shall be given not less than ten (10) days’ written notice of the Company’s or any of its Affiliates’ intention to terminate the Participant for Cause, such notice to state in detail the particular act or
acts or failure or failures to act that constitute the grounds on which the proposed termination of Continuous Service for Cause is based, and such termination shall be effective at the expiration of such ten (10) day notice period unless the
Board determines in its sole discretion that the Participant has cured or taken steps designed to result in cure of such act or acts or failure or failures to act that give rise to Cause during such period. If, within ninety (90) days
subsequent to the termination of Continuous Service of a Participant for any reason other than by the Company or any of its Affiliates for Cause, it is discovered that the Participant’s Continuous Service could have been terminated for Cause
pursuant to clause (v) or (vi) of the immediately preceding sentence, such Participant’s Continuous Service shall, at the discretion of the Board, be deemed to have been terminated by the Company or any of its Affiliates, as applicable,
for Cause for all purposes under the Plan, and the Participant shall be required to repay to the Company all amounts received by him or her in connection with Awards following such termination of Continuous Service that would have been forfeited
under the Plan had such termination been by the Company or any of its Affiliates for Cause. In the event that there is an Award Agreement or other written agreement between the Participant and the Company or any of its Affiliate otherwise defining
Cause, “Cause” shall have the meaning provided in such agreement, and a termination of the Participant’s Continuous Service by the Company or any of its Affiliates for Cause hereunder shall not be deemed to have occurred unless all
applicable notice and cure periods in such Award Agreement or other written agreement are complied with. 

(h)    “Change in Control” means the occurrence, in a single transaction or in a series of
related transactions, of any one or more of the following events:  

(i)    any Exchange Act Person becomes the Owner, directly or indirectly, of securities of the Company representing
more than 50% of the combined voting power of the Company’s then outstanding securities other than by virtue of a merger, consolidation or similar transaction. Notwithstanding the foregoing, a Change in Control will not be deemed to occur
(A) on account of the 

  
 17 

 
acquisition of securities of the Company directly from the Company, (B) on account of the acquisition of securities of the Company by an investor, any affiliate thereof or any other Exchange
Act Person that acquires the Company’s securities in a transaction or series of related transactions the primary purpose of which is to obtain financing for the Company through the issuance of equity securities, (C) on account of the
acquisition of securities of the Company by any individual who is, on the IPO Date, either an executive officer or a Director (either, an “IPO Investor”) and/or any entity in which an IPO Investor has a direct or indirect
interest (whether in the form of voting rights or participation in profits or capital contributions) of more than 50% (collectively, the “IPO Entities”) or on account of the IPO Entities continuing to hold shares that come to
represent more than 50% of the combined voting power of the Company’s then outstanding securities as a result of the conversion of any class of the Company’s securities into another class of the Company’s securities having a different
number of votes per share pursuant to the conversion provisions set forth in the Company’s Amended and Restated Certificate of Incorporation; or (D) solely because the level of Ownership held by any Exchange Act Person (the
“Subject Person”) exceeds the designated percentage threshold of the outstanding voting securities as a result of a repurchase or other acquisition of voting securities by the Company reducing the number of shares
outstanding, provided that if a Change in Control would occur (but for the operation of this sentence) as a result of the acquisition of voting securities by the Company, and after such share acquisition, the Subject Person becomes the Owner of any
additional voting securities that, assuming the repurchase or other acquisition had not occurred, increases the percentage of the then outstanding voting securities Owned by the Subject Person over the designated percentage threshold, then a Change
in Control will be deemed to occur; 
 (ii)    there is consummated a merger, consolidation or similar
transaction involving (directly or indirectly) the Company and, immediately after the consummation of such merger, consolidation or similar transaction, the stockholders of the Company immediately prior thereto do not Own, directly or indirectly,
either (A) outstanding voting securities representing more than 50% of the combined outstanding voting power of the surviving Entity in such merger, consolidation or similar transaction or (B) more than 50% of the combined outstanding
voting power of the parent of the surviving Entity in such merger, consolidation or similar transaction, in each case in substantially the same proportions as their Ownership of the outstanding voting securities of the Company immediately prior to
such transaction; provided, however, that a merger, consolidation or similar transaction will not constitute a Change in Control under this prong of the definition if the outstanding voting securities representing more than 50% of the
combined voting power of the surviving Entity or its parent are owned by the IPO Entities; 
 (iii)    there is
consummated a sale, lease, exclusive license or other disposition of all or substantially all of the consolidated assets of the Company and its Subsidiaries, other than a sale, lease, license or other disposition of all or substantially all of the
consolidated assets of the Company and its Subsidiaries to an Entity, more than 50% of the combined voting power of the voting securities of which are Owned by stockholders of the Company in substantially the same proportions as their Ownership of
the outstanding voting securities of the Company immediately prior to such sale, lease, license or other disposition; provided, however, that a sale, lease, exclusive license or other disposition of all or substantially all of the
consolidated assets of the Company and its Subsidiaries will not constitute a Change in Control under this prong of the definition if the outstanding voting securities representing more than 50% of the combined voting power of the acquiring Entity
or its parent are owned by the IPO Entities; 
 (iv)    individuals who, on the IPO Date, are members of the
Board (the “Incumbent Board”) cease for any reason to constitute at least a majority of the members of the Board; provided, however, that if the appointment or election (or nomination
for election) of any new Board member was approved or recommended by a majority vote of the members of the Incumbent Board then still in office, such new member will, for purposes of this Plan, be considered as a member of the Incumbent Board. 

  
 18 

 Notwithstanding the foregoing definition or any other provision of the Plan, the term Change in
Control will not include a sale of assets, merger or other transaction effected exclusively for the purpose of changing the domicile of the Company and the definition of Change in Control (or any analogous term) in an individual written agreement
between the Company or any Affiliate and the Participant will supersede the foregoing definition with respect to Awards subject to such agreement; provided, however, that if no definition of Change in Control or any analogous term is set
forth in such an individual written agreement, the foregoing definition will apply. 

(i)    “Code” means the Internal Revenue Code of 1986, as amended, including any applicable
regulations and guidance thereunder. 
 (j)    “Committee” means a committee of one or
more Directors to whom authority has been delegated by the Board in accordance with Section 2(c). 

(k)    “Common Stock” means, as of the IPO Date, the common stock of the Company, having
one vote per share. 
 (l)    “Company” means Tenable Holdings, Inc., a Delaware
corporation. 
 (m)    “Consultant” means any person, including an advisor, who is
(i) engaged by the Company or an Affiliate to render consulting or advisory services and is compensated for such services, or (ii) serving as a member of the board of directors of an Affiliate and is compensated for such services. However,
service solely as a Director, or payment of a fee for such service, will not cause a Director to be considered a “Consultant” for purposes of the Plan. Notwithstanding the foregoing, a person is treated as a Consultant under
this Plan only if a Form S-8 Registration Statement under the Securities Act is available to register either the offer or the sale of the Company’s securities to such person. 

(n)    “Continuous Service” means that the Participant’s service with the Company or
an Affiliate, whether as an Employee, Director or Consultant, is not interrupted or terminated. A change in the capacity in which the Participant renders service to the Company or an Affiliate as an Employee, Consultant or Director or a change in
the entity for which the Participant renders such service, provided that there is no interruption or termination of the Participant’s service with the Company or an Affiliate, will not terminate a Participant’s Continuous Service;
provided, however, that if the Entity for which a Participant is rendering services ceases to qualify as an Affiliate, as determined by the Board, in its sole discretion, such Participant’s Continuous Service will be considered to
have terminated on the date such Entity ceases to qualify as an Affiliate. To the extent permitted by law, the Board or the chief executive officer of the Company, in that party’s sole discretion, may determine whether Continuous Service will
be considered interrupted in the case of (i) any leave of absence approved by the Board or chief executive officer, including sick leave, military leave or any other personal leave, or (ii) transfers between the Company, an Affiliate, or
their successors. Notwithstanding the foregoing, a leave of absence will be treated as Continuous Service for purposes of vesting in an Award only to such extent as may be provided in the Company’s leave of absence policy, in the written terms
of any leave of absence agreement or policy applicable to the Participant, or as otherwise required by law. 

  
 19 

 (o)    “Corporate Transaction” means the
consummation, in a single transaction or in a series of related transactions, of any one or more of the following events: 

(i)    a sale or other disposition of all or substantially all, as determined by the Board, in its sole
discretion, of the consolidated assets of the Company and its Subsidiaries; 
 (ii)    a sale or other
disposition of more than 50% of the outstanding securities of the Company; 
 (iii)    a merger, consolidation or
similar transaction following which the Company is not the surviving corporation; or 
 (iv)    a merger,
consolidation or similar transaction following which the Company is the surviving corporation but the shares of Common Stock outstanding immediately preceding the merger, consolidation or similar transaction are converted or exchanged by virtue of
the merger, consolidation or similar transaction into other property, whether in the form of securities, cash or otherwise. 

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

(q)    “Disability” means, with respect to a Participant, the inability of such Participant
to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment that can be expected to result in death or that has lasted or can be expected to last for a continuous period of not less than 12
months, as provided in Sections 22(e)(3) and 409A(a)(2)(c)(i) of the Code, and will be determined by the Board on the basis of such medical evidence as the Board deems warranted under the circumstances. 

(r)    “Dissolution” means when the Company, after having executed a certificate of
dissolution with the State of Delaware (or other applicable state), has completely wound up its affairs. Conversion of the Company into a Limited Liability Company (or any other pass-through entity) will not be considered a “Dissolution”
for purposes of the Plan. 
 (s)    “Employee” means any person employed by the Company
or an Affiliate. However, service solely as a Director, or payment of a fee for such services, will not cause a Director to be considered an “Employee” for purposes of the Plan. 

(t)    “Entity” means a corporation, partnership, limited liability company or other
entity. 
 (u)    “Exchange Act” means the Securities Exchange Act of 1934, as amended,
and the rules and regulations promulgated thereunder. 
 (v)    “Exchange Act
Person” means any natural person, Entity or “group” (within the meaning of Section 13(d) or 14(d) of the Exchange Act), except that “Exchange Act Person” will not include (i) the Company or
any Subsidiary of the Company, (ii) any employee benefit plan of the Company or any Subsidiary of the Company or any trustee or other fiduciary holding securities under an employee benefit plan of the Company or any Subsidiary of the Company,
(iii) an underwriter temporarily holding securities pursuant to a registered public offering of such securities, (iv) an Entity Owned, directly or indirectly, by the stockholders of the Company in substantially the same proportions as
their Ownership of stock of the Company; or (v) any natural person, Entity or “group” (within the meaning of Section 13(d) or 14(d) of the Exchange Act) that, as of the IPO Date, is the Owner, directly or indirectly, of
securities of the Company representing more than 50% of the combined voting power of the Company’s then outstanding securities. 

  
 20 

 (w)    “Fair Market Value” means, as of any
date, the value of the Common Stock determined as follows: 
 (i)    If the Common Stock is listed on any
established stock exchange or traded on any established market, the Fair Market Value of a share of Common Stock will be, unless otherwise determined by the Board, the closing sales price for such stock as quoted on such exchange or market (or the
exchange or market with the greatest volume of trading in the Common Stock) on the date of determination, as reported in a source the Board deems reliable. 

(ii)    Unless otherwise provided by the Board, if there is no closing sales price for the Common Stock on the date
of determination, then the Fair Market Value will be the closing selling price on the last preceding date for which such quotation exists. 

(iii)    In the absence of such markets for the Common Stock, the Fair Market Value will be determined by the Board
in good faith and in a manner that complies with Sections 409A and 422 of the Code. 

(x)    “Incentive Stock Option” means an option granted pursuant to Section 5 of the
Plan that is intended to be, and qualifies as, an “incentive stock option” within the meaning of Section 422 of the Code. 

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

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

(aa)    “Nonstatutory Stock Option” means any Option granted pursuant to Section 5 of
the Plan that does not qualify as an Incentive Stock Option. 
 (bb)    “Officer” means a
person who is an officer of the Company within the meaning of Section 16 of the Exchange Act. 

(cc)    “Option” means an Incentive Stock Option or a Nonstatutory Stock Option to purchase
shares of Common Stock granted pursuant to the Plan. 
 (dd)    “Option Agreement” means
a written agreement between the Company and an Optionholder evidencing the terms and conditions of an Option grant. Each Option Agreement will be subject to the terms and conditions of the Plan. 

(ee)    “Optionholder” means a person to whom an Option is granted pursuant to the Plan or,
if applicable, such other person who holds an outstanding Option. 

  
 21 

 (ff)    “Other Stock Award” means an award
based in whole or in part by reference to the Common Stock which is granted pursuant to the terms and conditions of Section 6(d). 

(gg)    “Other Stock Award Agreement” means a written agreement between the
Company and a holder of an Other Stock Award evidencing the terms and conditions of an Other Stock Award grant. Each Other Stock Award Agreement will be subject to the terms and conditions of the Plan. 

(hh)    “Own,” “Owned,”
“Owner,” “Ownership” means a person or Entity will be deemed to “Own,” to have “Owned,” to be the “Owner” of, or to have acquired
“Ownership” of securities if such person or Entity, directly or indirectly, through any contract, arrangement, understanding, relationship or otherwise, has or shares voting power, which includes the power to vote or to direct the voting,
with respect to such securities. 
 (ii)    “Participant” means a person to whom an Award
is granted pursuant to the Plan or, if applicable, such other person who holds an outstanding Stock Award. 

(jj)    “Performance Cash Award” means an award of cash granted pursuant to the terms and
conditions of Section 6(c)(ii). 
 (kk)    “Performance Criteria” means the one or
more criteria that the Board will select for purposes of establishing the Performance Goals for a Performance Period. The Performance Criteria that will be used to establish such Performance Goals may be based on any one of, or combination of, the
following as determined by the Board: (i) earnings (including earnings per share and net earnings); (ii) earnings before interest, taxes and depreciation; (iii) earnings before interest, taxes, depreciation and amortization;
(iv) earnings before interest, taxes, depreciation, amortization and legal settlements; (v) earnings before interest, taxes, depreciation, amortization, legal settlements and other income (expense); (vi) earnings before interest, taxes,
depreciation, amortization, legal settlements, other income (expense) and stock-based compensation; (vii) earnings before interest, taxes, depreciation, amortization, legal settlements, other income (expense), stock-based compensation and
changes in deferred revenue; (viii) total stockholder return; (ix) return on equity or average stockholders’ equity; (x) return on assets, investment, or capital employed; (xi) stock price; (xii) margin (including gross
margin); (xiii) income (before or after taxes); (xiv) operating income; (xv) operating income after taxes; (xvi) pre-tax profit; (xvii) operating cash flow; (xviii) sales or revenue
targets; (xix) increases in revenue or product revenue; (xx) expenses and cost reduction goals; (xxi) improvement in or attainment of working capital levels; (xxii) economic value added (or an equivalent metric); (xxiii) market
share; (xxiv) cash flow; (xxv) cash flow per share; (xxvi) share price performance; (xxvii) debt reduction; (xxviii) implementation or completion of projects or processes; (xxix) stockholders’ equity;
(xxx) capital expenditures; (xxxi) debt levels; (xxxii) operating profit or net operating profit; (xxxiii) workforce diversity; (xxxiv) growth of net income or operating income; (xxxv) billings; (xxxvi) bookings;
(xxxvii) employee retention; (xxxviii) user satisfaction, including customer satisfaction or net promoter score measures; (xxxix) the number of users, including unique users; (xl) budget management; (xli) partner
satisfaction; (xlii) entry into or completion of strategic partnerships or transactions (including in-licensing and out-licensing of intellectual property); (xliii)
active clients; (xliv) keep rate; (xlv) average order value; (xlvi) client signups; (xlvii) client retention; (xlviii) conversion metrics; (xlix) client order metrics; (xlx) inventory metrics; and (xlxi) other measures
of performance selected by the Board. 
 (ll)    “Performance Goals” means, for a
Performance Period, the one or more goals established by the Board for the Performance Period based upon the Performance Criteria. Performance Goals may be based on a Company-wide basis, with respect to one or more business units, divisions,
Affiliates, or business segments, and in either absolute terms or relative to the performance of one or more comparable companies or the performance of one or more relevant indices. The Board is authorized

  
 22 

 
at any time in its sole discretion, to adjust or modify the calculation of a Performance Goal for such Performance Period in order to prevent the dilution or enlargement of the rights of
Participants, (a) in the event of, or in anticipation of, any unusual or extraordinary corporate item, transaction, event or development; (b) in recognition of, or in anticipation of, any other unusual or nonrecurring events affecting the
Company, or the financial statements of the Company in response to, or in anticipation of, changes in applicable laws, regulations, accounting principles, or business conditions; or (c) in view of the Board’s assessment of the business
strategy of the Company, performance of comparable organizations, economic and business conditions, and any other circumstances deemed relevant. Specifically, the Board is authorized to make adjustment in the method of calculating attainment of
Performance Goals and objectives for a Performance Period as follows: (i) to exclude the dilutive effects of acquisitions or joint ventures; (ii) to assume that any business divested by the Company achieved performance objectives at
targeted levels during the balance of a Performance Period following such divestiture; and (iii) to exclude the effect of any change in the outstanding shares of common stock of the Company by reason of any stock dividend or split, stock
repurchase, reorganization, recapitalization, merger, consolidation, spin-off, combination or exchange of shares or other similar corporate change, or any distributions to common stockholders other than
regular cash dividends. In addition, the Board is authorized to make adjustment in the method of calculating attainment of Performance Goals and objectives for a Performance Period as follows: (i) to exclude restructuring and/or other
nonrecurring charges; (ii) to exclude exchange rate effects, as applicable, for non-U.S. dollar denominated net sales and operating earnings; (iii) to exclude the effects of changes to generally
accepted accounting standards required by the Financial Accounting Standards Board; (iv) to exclude the effects of any items that are “unusual” in nature or occur “infrequently” as determined under generally accepted
accounting principles; (v) to exclude the effects to any statutory adjustments to corporate tax rates; and (vi) to make other appropriate adjustments determined by the Board. 

(mm)    “Performance Period” means the period of time selected by the Board over which the
attainment of one or more Performance Goals will be measured for the purpose of determining a Participant’s right to and the payment of a Stock Award or a Performance Cash Award. Performance Periods may be of varying and overlapping duration,
at the sole discretion of the Board. 
 (nn)    “Performance Stock Award” means a Stock
Award granted under the terms and conditions of Section 6(c)(i). 
 (oo)    “Plan”
means this Tenable Holdings, Inc. 2018 Equity Incentive Plan. 
 (pp)    “Restricted Stock
Award” means an award of shares of Common Stock which is granted pursuant to the terms and conditions of Section 6(a). 

(qq)    “Restricted Stock Award Agreement” means a written agreement between the Company
and a holder of a Restricted Stock Award evidencing the terms and conditions of a Restricted Stock Award grant. Each Restricted Stock Award Agreement will be subject to the terms and conditions of the Plan. 

(rr)    “Restricted Stock Unit Award” means a right to receive shares of
Common Stock which is granted pursuant to the terms and conditions of Section 6(b). 

(ss)    “Restricted Stock Unit Award Agreement” means a written agreement
between the Company and a holder of a Restricted Stock Unit Award evidencing the terms and conditions of a Restricted Stock Unit Award grant. Each Restricted Stock Unit Award Agreement will be subject to the terms and conditions of the Plan. 

  
 23 

 (tt)    “Rule
16b-3” means Rule 16b-3 promulgated under the Exchange Act or any successor to Rule 16b-3, as in effect from time to
time. 
 (uu)    “Securities Act” means the Securities Act of 1933, as amended. 

(vv)    “Stock Appreciation Right” or “SAR” means a
right to receive the appreciation on Common Stock that is granted pursuant to the terms and conditions of Section 5. 

(ww)    “Stock Appreciation Right Agreement” means a written agreement between the Company
and a holder of a Stock Appreciation Right evidencing the terms and conditions of a Stock Appreciation Right grant. Each Stock Appreciation Right Agreement will be subject to the terms and conditions of the Plan. 

(xx)    “Stock Award” means any right to receive Common Stock granted under the Plan,
including an Incentive Stock Option, a Nonstatutory Stock Option, a Restricted Stock Award, a Restricted Stock Unit Award, a Stock Appreciation Right, a Performance Stock Award or any Other Stock Award. 

(yy)    “Stock Award Agreement” means a written agreement between the Company and a
Participant evidencing the terms and conditions of a Stock Award grant. Each Stock Award Agreement will be subject to the terms and conditions of the Plan. 

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

(aaa)    “Ten Percent Stockholder” means a person who Owns (or is deemed to Own pursuant to
Section 424(d) of the Code) stock possessing more than 10% of the total combined voting power of all classes of stock of the Company or any Affiliate. 

(bbb)    “Transaction” means a Corporate Transaction or a Change in Control. 

  
 24 

 Standard Form 
  

TENABLE HOLDINGS, INC. 

STOCK OPTION GRANT NOTICE 

(2018 EQUITY INCENTIVE PLAN) 

Tenable Holdings, Inc. (the “Company”), pursuant to its 2018 Equity Incentive Plan (the “Plan”), hereby
grants to Optionholder an option to purchase the number of shares of the Company’s Common Stock set forth below. This option is subject to all of the terms and conditions as set forth in this Stock Option Grant Notice, in the Option Agreement,
the Plan and the Notice of Exercise, all of which are attached hereto and incorporated herein in their entirety. Capitalized terms not explicitly defined herein but defined in the Plan or the Option Agreement will have the same definitions as in the
Plan or the Option Agreement. If there is any conflict between the terms in this Stock Option Grant Notice and the Plan, the terms of the Plan will control. 
  

			
	 Optionholder:
	  	  

	 Date of Grant:
	  	  

	 Vesting Commencement Date:
	  	  

	 Number of Shares Subject to Option:
	  	  

	 Exercise Price (Per Share):
	  	  

	 Total Exercise Price:
	  	  

	 Expiration Date:
	  	  

  

					
	Type of Grant:	  	☐  Incentive Stock Option1	  	☐  Nonstatutory Stock Option
			
	Exercise Schedule:	  	Same as Vesting Schedule	  	
		
	Vesting Schedule:	  	[                    , subject to Optionholder’s Continuous Service as of each such
date]
		
	Payment:	  	By one or a combination of the following items (described in the Option Agreement):
		
		  	☒    By cash, check, bank draft or money order payable to the Company
		  	☒    Pursuant to a Regulation T Program if the shares are publicly traded
		  	☐    By delivery of already-owned shares if the shares are publicly traded
		  	☐    If and only to the extent this option is a Nonstatutory Stock Option, and subject to the Company’s consent at the time of exercise, by a “net exercise”
arrangement

  

	1 	If this is an Incentive Stock Option, it (plus other outstanding Incentive Stock Options) cannot be first exercisable for more than $100,000 in value (measured by exercise price) in any calendar year. Any excess
over $100,000 is a Nonstatutory Stock Option. 

  
 25 

 Standard Form 
  

Additional Terms/Acknowledgements: Optionholder acknowledges receipt of, and understands and agrees to, this Stock Option Grant Notice, the Option
Agreement and the Plan. Optionholder acknowledges and agrees that this Stock Option Grant Notice and the Option Agreement may not be modified, amended or revised except as provided in the Plan. Optionholder further acknowledges that as of the Date
of Grant, this Stock Option Grant Notice, the Option Agreement, and the Plan set forth the entire understanding between Optionholder and the Company regarding this option award and supersede all prior oral and written agreements, promises and/or
representations on that subject with the exception of, if applicable, (i) equity awards previously granted and delivered to Optionholder, (ii) any compensation recovery policy that is adopted by the Company or is otherwise required by
applicable law and (iii) any written employment or severance arrangement or other written agreement entered into between the Company and Optionholder specifying the terms that should govern this option upon the terms and conditions set forth
therein. 
 By accepting this option, Optionholder acknowledges having received and read the Stock Option Grant Notice, the Option Agreement and the Plan
and agrees to all of the terms and conditions set forth in these documents. Optionholder consents to receive Plan and related documents by electronic delivery and to participate in the Plan through an on-line
or electronic system established and maintained by the Company or another third party designated by the Company. 
  

									
	TENABLE HOLDINGS, INC.	 		 	OPTIONHOLDER:
				
	By:	 	  
	 		 	     

		 	Signature	 		 		 	Signature
					
	Title:	 	  
	 		 	Date:	 	  

					
	Date:	 	  
	 		 		 	

 ATTACHMENTS: Option Agreement, 2018 Equity Incentive Plan and Notice of Exercise

  
 26 

 Standard Form 
  

ATTACHMENT I 

TENABLE HOLDINGS, INC. 

OPTION AGREEMENT 

(2018 EQUITY INCENTIVE PLAN) 

(INCENTIVE STOCK OPTION OR NONSTATUTORY STOCK
OPTION) 
 Pursuant to your Stock Option Grant Notice (“Grant Notice”) and this Option Agreement,
Tenable Holdings, Inc. (the “Company”) has granted you an option under its 2018 Equity Incentive Plan (the “Plan”) to purchase the number of shares of the Company’s Common Stock indicated in your
Grant Notice at the exercise price indicated in your Grant Notice. The option is granted to you effective as of the date of grant set forth in the Grant Notice (the “Date of Grant”). If there is any conflict between the terms
in this Option Agreement and the Plan, the terms of the Plan will control. Capitalized terms not explicitly defined in this Option Agreement or in the Grant Notice but defined in the Plan will have the same definitions as in the Plan. 

The details of your option, in addition to those set forth in the Grant Notice and the Plan, are as follows: 

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

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

3.    EXERCISE RESTRICTION FOR NON-EXEMPT EMPLOYEES. If you are an Employee eligible for overtime compensation under the Fair Labor Standards Act of 1938, as amended (that is, a “Non-Exempt Employee”), and except as otherwise provided in the Plan, you may not exercise your option until you have completed at least six (6) months of Continuous Service measured from the Date
of Grant, even if you have already been an employee for more than six (6) months. Consistent with the provisions of the Worker Economic Opportunity Act, you may exercise your option as to any vested portion prior to such six (6) month
anniversary in the case of (i) your death or disability, (ii) a Corporate Transaction in which your option is not assumed, continued or substituted, (iii) a Change in Control or (iv) your termination of Continuous Service on your
“retirement” (as defined in the Company’s benefit plans). 
 4.    METHOD
OF PAYMENT. You must pay the full amount of the exercise price for the shares you wish to exercise. You may pay the exercise price in cash or by check, bank draft or money order payable to the Company or in any
other manner permitted by your Grant Notice, which may include one or more of the following: 

(a)    Provided that at the time of exercise the Common Stock is publicly traded, pursuant to a program developed
under Regulation T as promulgated by the Federal Reserve Board that, prior to the issuance of Common Stock, results in either the receipt of cash (or check) by the Company or the receipt of irrevocable instructions to pay the aggregate exercise
price to the Company from the sales proceeds. This manner of payment is also known as a “broker-assisted exercise”, “same day sale”, or “sell to cover”. 

  
 27 

 Standard Form 
  

(b)    Provided that at the time of exercise the Common Stock is publicly traded, by delivery to the Company (either
by actual delivery or attestation) of already-owned shares of Common Stock that are owned free and clear of any liens, claims, encumbrances or security interests, and that are valued at Fair Market Value on the date of exercise. “Delivery”
for these purposes, in the sole discretion of the Company at the time you exercise your option, will include delivery to the Company of your attestation of ownership of such shares of Common Stock in a form approved by the Company. You may not
exercise your option by delivery to the Company of Common Stock if doing so would violate the provisions of any law, regulation or agreement restricting the redemption of the Company’s stock. 

(c)    If this option is a Nonstatutory Stock Option, subject to the consent of the Company at the time of
exercise, by a “net exercise” arrangement pursuant to which the Company will reduce the number of shares of Common Stock issued upon exercise of your option by the largest whole number of shares with a Fair Market Value that does not
exceed the aggregate exercise price. You must pay any remaining balance of the aggregate exercise price not satisfied by the “net exercise” in cash or other permitted form of payment. Shares of Common Stock will no longer be outstanding
under your option and will not be exercisable thereafter if those shares (i) are used to pay the exercise price pursuant to the “net exercise,” (ii) are delivered to you as a result of such exercise, and (iii) are withheld to
satisfy your tax withholding obligations. 
 5.    WHOLE SHARES. You may
exercise your option only for whole shares of Common Stock. 
 6.    SECURITIES
LAW COMPLIANCE. In no event may you exercise your option unless the shares of Common Stock issuable upon exercise are then registered under the Securities Act or, if not registered, the Company has determined that
your exercise and the issuance of the shares would be exempt from the registration requirements of the Securities Act. The exercise of your option also must comply with all other applicable laws and regulations governing your option, and you may not
exercise your option if the Company determines that such exercise would not be in material compliance with such laws and regulations (including any restrictions on exercise required for compliance with Treas. Reg.
1.401(k)-1(d)(3), if applicable). 
 7.    TERM.
You may not exercise your option before the Date of Grant or after the expiration of the option’s term. The term of your option expires, subject to the provisions of Section 5(h) of the Plan, upon the earliest of the following: 

(a)    immediately upon the termination of your Continuous Service for Cause; 

(b)    three (3) months after the termination of your Continuous Service for any reason other than Cause,
your Disability or your death (except as otherwise provided in Section 7(d) below); provided, however, that if during any part of such three (3) month period your option is not exercisable solely because of the condition set
forth in the section above regarding “Securities Law Compliance,” your option will not expire until the earlier of the Expiration Date or until it has been exercisable for an aggregate period of three (3) months after the termination
of your Continuous Service; provided further, if during any part of such three (3) month period, the sale of any Common Stock received upon exercise of your option would violate the Company’s insider trading policy, then your option
will not expire until the earlier of the Expiration Date or until it has been exercisable for an aggregate period of three (3) months after the termination of your Continuous Service during which the sale of the Common Stock received upon
exercise of your option would not be in violation of the Company’s insider trading policy. Notwithstanding the foregoing, if (i) you are a Non-Exempt Employee, (ii) your Continuous Service
terminates within six (6) months after the Date of Grant, and (iii) you have vested in a portion of your option at the time of your termination of Continuous Service, your option will not expire until the earlier of (x) the later of
(A) the date that is seven (7) months after the Date of Grant, and (B) the date that is three (3) months after the termination of your Continuous Service, and (y) the Expiration Date; 

  
 28 

 Standard Form 
  

(c)    twelve (12) months after the termination of your Continuous Service due to your Disability (except as
otherwise provided in Section 7(d) below); 
 (d)    eighteen (18) months after your death if you die
either during your Continuous Service or within three (3) months after your Continuous Service terminates for any reason other than Cause; 

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

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

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

 8.    EXERCISE. 

(a)    You may exercise the vested portion of your option (and the unvested portion of your option if your Grant
Notice so permits) during its term by (i) delivering a Notice of Exercise (in a form designated by the Company) or completing such other documents and/or procedures designated by the Company for exercise and (ii) paying the exercise price
and any applicable withholding taxes to the Company’s Secretary, stock plan administrator, or such other person as the Company may designate, together with such additional documents as the Company may then require. 

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

(c)    If your option is an Incentive Stock Option, by exercising your option you agree that you will notify the
Company in writing within fifteen (15) days after the date of any disposition of any of the shares of the Common Stock issued upon exercise of your option that occurs within two (2) years after the Date of Grant or within one (1) year
after such shares of Common Stock are transferred upon exercise of your option. 
 (d)    By accepting your
option you agree that you will not sell, dispose of, transfer, make any short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale with respect to any shares of
Common Stock or other securities of the Company held by you, for a period of one hundred eighty (180) days following the effective date of a registration statement of the Company filed under the Securities Act or such longer

  
 29 

 Standard Form 
  

period as the underwriters or the Company will request to facilitate compliance with FINRA Rule 2241 or any successor or similar rules or regulation (the “Lock-Up Period”); provided, however, that nothing contained in this section will prevent the exercise of a repurchase option, if any, in favor of the Company during the
Lock-Up Period. You further agree to execute and deliver such other agreements as may be reasonably requested by the Company or the underwriters that are consistent with the foregoing or that are necessary to
give further effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to your shares of Common Stock until the end of such period. You also agree that any transferee of any shares of
Common Stock (or other securities) of the Company held by you will be bound by this Section 8(d). The underwriters of the Company’s stock are intended third party beneficiaries of this Section 8(d) and will have the right, power and
authority to enforce the provisions hereof as though they were a party hereto. 

9.    TRANSFERABILITY. Except as otherwise provided in this Section 9, your option is
not transferable, except by will or by the laws of descent and distribution, and is exercisable during your life only by you. 

(a)    Certain Trusts. Upon receiving written permission from the Board or its duly authorized designee, you
may transfer your option to a trust if you are considered to be the sole beneficial owner (determined under Section 671 of the Code and applicable state law) while the option is held in the trust. You and the trustee must enter into transfer
and other agreements required by the Company. 
 (b)    Domestic Relations Orders. Upon receiving written
permission from the Board or its duly authorized designee, and provided that you and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your option pursuant to the terms of a domestic
relations order, official marital settlement agreement or other divorce or separation instrument as permitted by Treasury Regulation 1.421-1(b)(2) that contains the information required by the Company to
effectuate the transfer. You are encouraged to discuss the proposed terms of any division of this option with the Company prior to finalizing the domestic relations order or marital settlement agreement to help ensure the required information is
contained within the domestic relations order or marital settlement agreement. If this option is an Incentive Stock Option, this option may be deemed to be a Nonstatutory Stock Option as a result of such transfer. 

(c)    Beneficiary Designation. Upon receiving written permission from the Board or its duly authorized
designee, you may, by delivering written notice to the Company, in a form approved by the Company and any broker designated by the Company to handle option exercises, designate a third party who, on your death, will thereafter be entitled to
exercise this option and receive the Common Stock or other consideration resulting from such exercise. In the absence of such a designation, your executor or administrator of your estate will be entitled to exercise this option and receive, on
behalf of your estate, the Common Stock or other consideration resulting from such exercise. 

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

  
 30 

 Standard Form 
  

11.    WITHHOLDING OBLIGATIONS. 

(a)    At the time you exercise your option, in whole or in part, and at any time thereafter as requested by the
Company, you hereby authorize withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for (including by means of a “same day sale” pursuant to a program developed under Regulation T as
promulgated by the Federal Reserve Board to the extent permitted by the Company), any sums required to satisfy the federal, state, local and foreign tax withholding obligations of the Company or an Affiliate, if any, which arise in connection with
the exercise of your option. 
 (b)    If this option is a Nonstatutory Stock Option, then upon your request and
subject to approval by the Company, and compliance with any applicable legal conditions or restrictions, the Company may withhold from fully vested shares of Common Stock otherwise issuable to you upon the exercise of your option a number of whole
shares of Common Stock having a Fair Market Value, determined by the Company as of the date of exercise, not in excess of the amount necessary to satisfy the withholding obligation using the maximum statutory withholding rates for federal, state,
local and foreign tax purposes, including payroll taxes, that are applicable to supplemental income. Any adverse consequences to you arising in connection with such share withholding procedure shall be your sole responsibility. 

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

12.    TAX CONSEQUENCES. You hereby agree that the Company does
not have a duty to design or administer the Plan or its other compensation programs in a manner that minimizes your tax liabilities. You will not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related
to tax liabilities arising from your option or your other compensation. In particular, you acknowledge that this option is exempt from Section 409A of the Code only if the exercise price per share specified in the Grant Notice is at least equal
to the “fair market value” per share of the Common Stock on the Date of Grant and there is no other impermissible deferral of compensation associated with the option. 

13.    NOTICES. Any notices provided for in your option or the Plan will be given in writing
(including electronically) and will be deemed effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United States mail, postage prepaid, addressed to you at the
last address you provided to the Company. The Company may, in its sole discretion, decide to deliver any documents related to participation in the Plan and this option by electronic means or to request your consent to participate in the Plan by
electronic means. By accepting this option, you consent to receive such documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and maintained by the
Company or another third party designated by the Company. 
 14.    GOVERNING
PLAN DOCUMENT. Your option is subject to all the provisions of the Plan, the provisions of which are hereby made a part of your option, and is further subject to all interpretations, amendments, rules and
regulations, which may from time to time be promulgated and adopted pursuant to the Plan. If there is any conflict between the provisions of your option and those of the Plan, the provisions of the Plan will control. In addition, your option (and
any compensation paid or shares issued under your option) is subject to recoupment in accordance with The Dodd–Frank Wall Street Reform and Consumer Protection Act and any implementing regulations thereunder, any clawback policy adopted by the
Company and any compensation recovery policy otherwise required by applicable law. 

  
 31 

 Standard Form 
  

15.    OTHER DOCUMENTS. You hereby acknowledge receipt of and the right to
receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Plan prospectus. In addition, you acknowledge receipt of the Company’s policy permitting certain individuals to
sell shares only during certain “window” periods and the Company’s insider trading policy, in effect from time to time. 

16.    EFFECT ON OTHER EMPLOYEE
BENEFIT PLANS. The value of this option will not be included as compensation, earnings, salaries, or other similar terms used when calculating your benefits under any employee benefit plan sponsored by the Company
or any Affiliate, except as such plan otherwise expressly provides. The Company expressly reserves its rights to amend, modify, or terminate any of the Company’s or any Affiliate’s employee benefit plans. 

17.    VOTING RIGHTS. You will not have voting or any other rights as a
stockholder of the Company with respect to the shares to be issued pursuant to this option until such shares are issued to you. Upon such issuance, you will obtain full voting and other rights as a stockholder of the Company. Nothing contained in
this option, and no action taken pursuant to its provisions, will create or be construed to create a trust of any kind or a fiduciary relationship between you and the Company or any other person. 

18.    SEVERABILITY. If all or any part of this Option Agreement or the Plan is declared by
any court or governmental authority to be unlawful or invalid, such unlawfulness or invalidity will not invalidate any portion of this Option Agreement or the Plan not declared to be unlawful or invalid. Any Section of this Option Agreement (or part
of such a Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful and valid. 

19.    MISCELLANEOUS. 

(a)    The rights and obligations of the Company under your option will be transferable to any one or more persons
or entities, and all covenants and agreements hereunder will inure to the benefit of, and be enforceable by the Company’s successors and assigns. 

(b)    You agree upon request to execute any further documents or instruments necessary or desirable in the sole
determination of the Company to carry out the purposes or intent of your option. 
 (c)    You acknowledge and
agree that you have reviewed your option in its entirety, have had an opportunity to obtain the advice of counsel prior to executing and accepting your option, and fully understand all provisions of your option. 

(d)    This Option Agreement will be subject to all applicable laws, rules, and regulations, and to such approvals
by any governmental agencies or national securities exchanges as may be required. 
 (e)    All obligations of
the Company under the Plan and this Option Agreement will be binding on any successor to the Company, whether the existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or
substantially all of the business and/or assets of the Company. 
 *     *     * 

  
 32 

 Standard Form 
  

This Option Agreement will be deemed to be signed by you upon the signing by you of the Stock Option Grant Notice to which it is attached. 

  
 33 

 Standard Form 
  

ATTACHMENT II 

2018 EQUITY INCENTIVE PLAN 

  
 34 

 ATTACHMENT III 

NOTICE OF EXERCISE 

 

					
	TENABLE HOLDINGS, INC.	 		  	
	7021 Columbia Gateway Dr.	 		  	Date of Exercise:                                 
	Columbia, MD 21046	 		  	

 This constitutes notice to Tenable Holdings, Inc. (the “Company”) under my stock
option that I elect to purchase the below number of shares of Common Stock of the Company (the “Shares”) for the price set forth below. 
  

									
	 Type of option (check one):
	  	 	Incentive ☐	 	 	 	Nonstatutory ☐	 
			
	 Stock option dated:
	  				 			
		  	  
	  
	 	 	  
	  
	 
			
	 Number of Shares as to which option is exercised:
	  				 			
		  	  
	  
	 	 	  
	  
	 
			
	 Certificates to be issued in name of:
	  				 			
		  	  
	  
	 	 	  
	  
	 
			
	 Total exercise price:
	  	$	                    	 	 	$	                        	 
			
	 Cash payment delivered herewith:
	  	$	                    	 	 	$	                        	 
			
	 [Value of
                 Shares delivered herewith1:
	  	$	                    	 	 	$	                        	] 
			
	 [Value of
                 Shares pursuant to net exercise2:
	  	$	                    	 	 	$	                        	] 
			
	 [Regulation T Program (cashless
exercise3):
	  	$	                    	 	 	$	                        	] 

  

	1 	Shares must meet the public trading requirements set forth in the option. Shares must be valued in accordance with the terms of the option being exercised, and must be owned free and clear of any liens, claims,
encumbrances or security interests. Certificates must be endorsed or accompanied by an executed assignment separate from certificate. 

	2 	The option must be a Nonstatutory Stock Option, and the Company must have established net exercise procedures at the time of exercise, in order to utilize this payment method. 

	3 	Shares must meet the public trading requirements set forth in the option. 

  
 35 

 By this exercise, I agree (i) to provide such additional documents as you may require
pursuant to the terms of the Tenable Holdings, Inc. 2018 Equity Incentive Plan, (ii) to provide for the payment by me to you (in the manner designated by you) of your withholding obligation, if any, relating to the exercise of this option, and
(iii) if this exercise relates to an incentive stock option, to notify you in writing within fifteen (15) days after the date of any disposition of any of the Shares issued upon exercise of this option that occurs within two (2) years
after the date of grant of this option or within one (1) year after such Shares are issued upon exercise of this option. 
 I further
agree that, if required by the Company (or a representative of the underwriters) in connection with the first underwritten registration of the offering of any securities of the Company under the Securities Act, I will not sell, dispose of, transfer,
make any short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale with respect to any shares of Common Stock or other securities of the Company for a period of one
hundred eighty (180) days following the effective date of a registration statement of the Company filed under the Securities Act (or such longer period as the underwriters or the Company shall request to facilitate compliance with FINRA Rule
2241 or any successor or similar rule or regulation) (the “Lock-Up Period”). I further agree to execute and deliver such other agreements as may be reasonably requested by the Company
or the underwriters that are consistent with the foregoing or that are necessary to give further effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions
with respect to securities subject to the foregoing restrictions until the end of such period. 
  

	
	Very truly yours,
	
	  

  
 36 

 Director/Executive Officer Form 

 
 TENABLE HOLDINGS, INC.

 STOCK OPTION GRANT NOTICE 

(2018 EQUITY INCENTIVE PLAN) 

Tenable Holdings, Inc. (the “Company”), pursuant to its 2018 Equity Incentive Plan (the “Plan”), hereby
grants to Optionholder an option to purchase the number of shares of the Company’s Common Stock set forth below. This option is subject to all of the terms and conditions as set forth in this Stock Option Grant Notice, in the Option Agreement,
the Plan and the Notice of Exercise, all of which are attached hereto and incorporated herein in their entirety. Capitalized terms not explicitly defined herein but defined in the Plan or the Option Agreement will have the same definitions as in the
Plan or the Option Agreement. If there is any conflict between the terms in this Stock Option Grant Notice and the Plan, the terms of the Plan will control. 
  

							
		 	Optionholder:	 	  
	 	
		 	Date of Grant:	 	  
	 	
	
                   
                 
	 	Vesting Commencement Date:	 	  
	 	
                   
                 

		 	Number of Shares Subject to Option:	 	  
	 	
		 	Exercise Price (Per Share):	 	  
	 	
		 	Total Exercise Price:	 	  
	 	
		 	Expiration Date:	 	  
	 	

  

			
	Type of Grant:	  	☐   Incentive Stock Option1                     ☐
  Nonstatutory Stock Option
		
	Exercise Schedule:	  	Same as Vesting Schedule
		
	Vesting Schedule:	  	[                    , subject to Optionholder’s Continuous Service as of each such date and the potential
vesting acceleration described in Section 1 of the Option Agreement]
		
	Payment:	  	By one or a combination of the following items (described in the Option Agreement):
		
		  	☒     By cash, check, bank draft or money order payable to the Company
		  	☒     Pursuant to a Regulation T Program if the shares are publicly traded
		  	☐     By delivery of already-owned shares if the shares are publicly traded
		  	☐     If and only to the extent this option is a Nonstatutory Stock Option, and subject to the Company’s consent at the time of exercise, by a “net exercise” arrangement

  

	1 	If this is an Incentive Stock Option, it (plus other outstanding Incentive Stock Options) cannot be first exercisable for more than $100,000 in value (measured by exercise price) in any calendar year. Any excess
over $100,000 is a Nonstatutory Stock Option. 

  
 37 

 Director/Executive Officer Form 

 
 Additional Terms/Acknowledgements: Optionholder acknowledges receipt of, and
understands and agrees to, this Stock Option Grant Notice, the Option Agreement and the Plan. Optionholder acknowledges and agrees that this Stock Option Grant Notice and the Option Agreement may not be modified, amended or revised except as
provided in the Plan. Optionholder further acknowledges that as of the Date of Grant, this Stock Option Grant Notice, the Option Agreement, and the Plan set forth the entire understanding between Optionholder and the Company regarding this option
award and supersede all prior oral and written agreements, promises and/or representations on that subject with the exception of, if applicable, (i) equity awards previously granted and delivered to Optionholder, (ii) any compensation
recovery policy that is adopted by the Company or is otherwise required by applicable law and (iii) any written employment or severance arrangement or other written agreement entered into between the Company and Optionholder specifying the
terms that should govern this option upon the terms and conditions set forth therein. 
 By accepting this option, Optionholder acknowledges having received
and read the Stock Option Grant Notice, the Option Agreement and the Plan and agrees to all of the terms and conditions set forth in these documents. Optionholder consents to receive Plan and related documents by electronic delivery and to
participate in the Plan through an on-line or electronic system established and maintained by the Company or another third party designated by the Company. 

 

									
	TENABLE HOLDINGS, INC.	 		 	OPTIONHOLDER:
				
	By:	 	  
	 		 	     

		 	Signature	 		 		 	Signature
					
	Title:	 	  
	 		 	Date:	 	  

					
	Date:	 	  
	 		 		 	

 ATTACHMENTS: Option Agreement, 2018 Equity Incentive Plan and Notice of Exercise

  
 38 

 Director/Executive Officer Form 

 
 ATTACHMENT I 

TENABLE HOLDINGS, INC. 

OPTION AGREEMENT 

(2018 EQUITY INCENTIVE PLAN) 

(INCENTIVE STOCK OPTION OR NONSTATUTORY STOCK
OPTION) 
 Pursuant to your Stock Option Grant Notice (“Grant Notice”) and this Option Agreement,
Tenable Holdings, Inc. (the “Company”) has granted you an option under its 2018 Equity Incentive Plan (the “Plan”) to purchase the number of shares of the Company’s Common Stock indicated in your
Grant Notice at the exercise price indicated in your Grant Notice. The option is granted to you effective as of the date of grant set forth in the Grant Notice (the “Date of Grant”). If there is any conflict between the terms
in this Option Agreement and the Plan, the terms of the Plan will control. Capitalized terms not explicitly defined in this Option Agreement or in the Grant Notice but defined in the Plan will have the same definitions as in the Plan. 

The details of your option, in addition to those set forth in the Grant Notice and the Plan, are as follows: 

1.    VESTING. Subject to the provisions contained herein, your option will vest as provided
in your Grant Notice. Vesting will cease upon the termination of your Continuous Service. Notwithstanding the foregoing, if your Continuous Service terminates due to an involuntary termination by the Company (not including death or Disability)
without Cause or due to your voluntary termination with Good Reason, effective after the first anniversary of the Vesting Commencement Date, and as of the date of your termination of Continuous Service the shares subject to the option have not
already become fully vested, you will be credited with an additional vesting percentage equal to 25% multiplied by a fraction, the numerator of which is equal to the number of completed months of Continuous Service elapsed since the preceding
anniversary of the Vesting Commencement Date on which additional vesting was received and the denominator of which is twelve (12). For the avoidance of doubt if the effective date of the termination of your Continuous Service without Cause or for
Good Reason occurs on an anniversary date of the Vesting Commencement Date, no additional vesting for a partial year will be provided under the preceding sentence. In addition to the foregoing, (i) if you remain in Continuous Service through
the closing of a Change in Control and the option is not continued, assumed or a substituted option is not granted as permitted by Section 9(c) of the Plan in connection with a Change in Control, or if your Continuous Service terminates due to
an involuntary termination by the Company (not including death or Disability) without Cause or due to your voluntary termination with Good Reason at any time between the date a definitive agreement providing for a Change in Control is entered into
and on or before the closing of a Change in Control, then the remaining unvested shares subject to the option will become fully vested as of the closing of the Change in Control and (ii) if the option is continued, assumed or a substituted
option is granted as permitted by Section 9(c) of the Plan in connection with a Change in Control and if at any time between the closing of a Change in Control and the date which is twelve (12) months after the closing of such Change in
Control, your Continuous Service terminates due to an involuntary termination by the Company (not including death or Disability) without Cause or due to your voluntary termination with Good Reason, then the remaining unvested portion of the shares
subject to the option will accelerate and be deemed to be vested in full upon such termination of Continuous Service. 

(a)    “Good Reason” shall mean that any of following actions are taken by the Company
without your prior written consent: (i) a material reduction by the Company of your base salary (other than in a broad based reduction similarly affecting all other members of Company’s executive

  
 39 

 Director/Executive Officer Form 

 
 management); (ii) a material breach by the Company of your employment agreement or any
other material written agreement between you and the Company concerning the terms and conditions of your employment with the Company; (iii) the relocation of your principal place of employment, without your consent, to a place that increases
your one-way commute by more than fifty (50) miles as compared to your then-current principal place of employment immediately prior to such relocation; or (iv) a material reduction in your duties,
authority, or responsibilities relative to your duties, authority, or responsibilities in effect immediately prior to such reduction; provided, however, that, any such termination by you shall only be deemed for Good Reason pursuant to this
definition if: (1) you give the Company written notice of your intent to terminate for Good Reason within thirty (30) days following your learning of the occurrence of the condition(s) that you believe constitute(s) Good Reason, which
notice shall describe such condition(s); (2) the Company fails to remedy such condition(s) within thirty (30) days following receipt of the written notice (the “Cure Period”); and (3) you voluntarily terminate your
employment within sixty (60) days following the end of the Cure Period. 
 (b)    If any payment or benefit
you would receive from the Company or otherwise in connection with a Change in Control or other similar transaction (a “280G Payment”) would (i) constitute a “parachute payment” within the meaning of
Section 280G of the Code, and (ii) but for this sentence, be subject to the excise tax imposed by Section 4999 of the Code (the “Excise Tax”), then any such 280G Payment (a “Payment”)
shall be equal to the Reduced Amount. The “Reduced Amount” shall be either (x) the largest portion of the Payment that would result in no portion of the Payment (after reduction) being subject to the Excise Tax or
(y) the largest portion, up to and including the total, of the Payment, whichever amount (i.e., the amount determined by clause (x) or by clause (y)), after taking into account all applicable federal, state and local employment taxes,
income taxes, and the Excise Tax (all computed at the highest applicable marginal rate), results in your receipt, on an after-tax basis, of the greater economic benefit notwithstanding that all or some portion
of the Payment may be subject to the Excise Tax. If a reduction in a Payment is required pursuant to the preceding sentence and the Reduced Amount is determined pursuant to clause (x) of the preceding sentence, the reduction shall occur in the
manner (the “Reduction Method”) that results in the greatest economic benefit for you. If more than one method of reduction will result in the same economic benefit, the items so reduced will be reduced pro rata (the
“Pro Rata Reduction Method”). 
 Notwithstanding the foregoing, if the Reduction Method or the Pro Rata Reduction
Method would result in any portion of the Payment being subject to taxes pursuant to Section 409A of the Code that would not otherwise be subject to taxes pursuant to Section 409A of the Code, then the Reduction Method and/or the Pro Rata
Reduction Method, as the case may be, shall be modified so as to avoid the imposition of taxes pursuant to Section 409A of the Code as follows: (A) as a first priority, the modification shall preserve to the greatest extent possible, the
greatest economic benefit for you as determined on an after-tax basis; (B) as a second priority, Payments that are contingent on future events (e.g., being terminated without cause), shall be reduced (or
eliminated) before Payments that are not contingent on future events; and (C) as a third priority, Payments that are “deferred compensation” within the meaning of Section 409A of the Code shall be reduced (or eliminated) before
Payments that are not deferred compensation within the meaning of Section 409A of the Code. 
 Unless you and the Company agree on an
alternative accounting firm, the accounting firm engaged by the Company for general tax compliance purposes as of the day prior to the effective date of the change of control transaction triggering the Payment shall perform the foregoing
calculations. If the accounting firm so engaged by the Company is serving as accountant or auditor for the individual, entity or group effecting the change of control transaction, the Company shall appoint a nationally recognized accounting firm to
make the determinations required hereunder. The Company shall bear all expenses with respect to the determinations by such accounting firm required to be made hereunder. The Company shall use commercially reasonable efforts to cause the accounting
firm engaged to make the 

  
 40 

 Director/Executive Officer Form 

 
 determinations hereunder to provide its calculations, together with detailed supporting
documentation, to you and the Company within fifteen (15) calendar days after the date on which your right to a 280G Payment becomes reasonably likely to occur (if requested at that time by you or the Company) or such other time as requested by
you or the Company. 
 If you receive a Payment for which the Reduced Amount was determined pursuant to clause (x) of the first
paragraph of this Section 1(b) and the Internal Revenue Service determines thereafter that some portion of the Payment is subject to the Excise Tax, you shall promptly return to the Company a sufficient amount of the Payment (after reduction
pursuant to clause (x) of the first paragraph of this Section 1(b) so that no portion of the remaining Payment is subject to the Excise Tax. For the avoidance of doubt, if the Reduced Amount was determined pursuant to clause (y) in
the first paragraph of this Section 1(b), you shall have no obligation to return any portion of the Payment pursuant to the preceding sentence. 

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

3.    EXERCISE RESTRICTION FOR NON-EXEMPT EMPLOYEES. If you are an Employee eligible for overtime compensation under the Fair Labor Standards Act of 1938, as amended (that is, a “Non-Exempt Employee”), and except as otherwise provided in the Plan, you may not exercise your option until you have completed at least six (6) months of Continuous Service measured from the Date
of Grant, even if you have already been an employee for more than six (6) months. Consistent with the provisions of the Worker Economic Opportunity Act, you may exercise your option as to any vested portion prior to such six (6) month
anniversary in the case of (i) your death or disability, (ii) a Corporate Transaction in which your option is not assumed, continued or substituted, (iii) a Change in Control or (iv) your termination of Continuous Service on your
“retirement” (as defined in the Company’s benefit plans). 
 4.    METHOD
OF PAYMENT. You must pay the full amount of the exercise price for the shares you wish to exercise. You may pay the exercise price in cash or by check, bank draft or money order payable to the Company or in any
other manner permitted by your Grant Notice, which may include one or more of the following: 

(a)    Provided that at the time of exercise the Common Stock is publicly traded, pursuant to a program developed
under Regulation T as promulgated by the Federal Reserve Board that, prior to the issuance of Common Stock, results in either the receipt of cash (or check) by the Company or the receipt of irrevocable instructions to pay the aggregate exercise
price to the Company from the sales proceeds. This manner of payment is also known as a “broker-assisted exercise”, “same day sale”, or “sell to cover”. 

(b)    Provided that at the time of exercise the Common Stock is publicly traded, by delivery to the Company
(either by actual delivery or attestation) of already-owned shares of Common Stock that are owned free and clear of any liens, claims, encumbrances or security interests, and that are valued at Fair Market Value on the date of exercise.
“Delivery” for these purposes, in the sole discretion of the Company at the time you exercise your option, will include delivery to the Company of your attestation of ownership of such shares of Common Stock in a form approved by the
Company. You may not exercise your option by delivery to the Company of Common Stock if doing so would violate the provisions of any law, regulation or agreement restricting the redemption of the Company’s stock. 

  
 41 

 Director/Executive Officer Form 

 
 (c)    If this option is a Nonstatutory Stock
Option, subject to the consent of the Company at the time of exercise, by a “net exercise” arrangement pursuant to which the Company will reduce the number of shares of Common Stock issued upon exercise of your option by the largest whole
number of shares with a Fair Market Value that does not exceed the aggregate exercise price. You must pay any remaining balance of the aggregate exercise price not satisfied by the “net exercise” in cash or other permitted form of payment.
Shares of Common Stock will no longer be outstanding under your option and will not be exercisable thereafter if those shares (i) are used to pay the exercise price pursuant to the “net exercise,” (ii) are delivered to you as a result
of such exercise, and (iii) are withheld to satisfy your tax withholding obligations. 

5.    WHOLE SHARES. You may exercise your option only for whole shares of
Common Stock. 
 6.    SECURITIES LAW COMPLIANCE. In no event
may you exercise your option unless the shares of Common Stock issuable upon exercise are then registered under the Securities Act or, if not registered, the Company has determined that your exercise and the issuance of the shares would be exempt
from the registration requirements of the Securities Act. The exercise of your option also must comply with all other applicable laws and regulations governing your option, and you may not exercise your option if the Company determines that such
exercise would not be in material compliance with such laws and regulations (including any restrictions on exercise required for compliance with Treas. Reg. 1.401(k)-1(d)(3), if applicable). 

7.    TERM. You may not exercise your option before the Date of Grant or after the expiration
of the option’s term. The term of your option expires, subject to the provisions of Section 5(h) of the Plan, upon the earliest of the following: 

(a)    immediately upon the termination of your Continuous Service for Cause; 

(b)    three (3) months after the termination of your Continuous Service for any reason other than Cause,
your Disability or your death (except as otherwise provided in Section 7(d) below); provided, however, that if during any part of such three (3) month period your option is not exercisable solely because of the condition set
forth in the section above regarding “Securities Law Compliance,” your option will not expire until the earlier of the Expiration Date or until it has been exercisable for an aggregate period of three (3) months after the termination
of your Continuous Service; provided further, if during any part of such three (3) month period, the sale of any Common Stock received upon exercise of your option would violate the Company’s insider trading policy, then your option
will not expire until the earlier of the Expiration Date or until it has been exercisable for an aggregate period of three (3) months after the termination of your Continuous Service during which the sale of the Common Stock received upon
exercise of your option would not be in violation of the Company’s insider trading policy. Notwithstanding the foregoing, if (i) you are a Non-Exempt Employee, (ii) your Continuous Service
terminates within six (6) months after the Date of Grant, and (iii) you have vested in a portion of your option at the time of your termination of Continuous Service, your option will not expire until the earlier of (x) the later of
(A) the date that is seven (7) months after the Date of Grant, and (B) the date that is three (3) months after the termination of your Continuous Service, and (y) the Expiration Date; 

(c)    twelve (12) months after the termination of your Continuous Service due to your Disability (except as
otherwise provided in Section 7(d) below); 
 (d)    eighteen (18) months after your death if you die
either during your Continuous Service or within three (3) months after your Continuous Service terminates for any reason other than Cause; 

  
 42 

 Director/Executive Officer Form 

 
 (e)    the Expiration Date indicated in your
Grant Notice; or 
 (f)    the day before the tenth (10th) anniversary of the Date of Grant. 

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

 8.    EXERCISE. 

(a)    You may exercise the vested portion of your option (and the unvested portion of your option if your Grant
Notice so permits) during its term by (i) delivering a Notice of Exercise (in a form designated by the Company) or completing such other documents and/or procedures designated by the Company for exercise and (ii) paying the exercise price
and any applicable withholding taxes to the Company’s Secretary, stock plan administrator, or such other person as the Company may designate, together with such additional documents as the Company may then require. 

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

(c)    If your option is an Incentive Stock Option, by exercising your option you agree that you will notify the
Company in writing within fifteen (15) days after the date of any disposition of any of the shares of the Common Stock issued upon exercise of your option that occurs within two (2) years after the Date of Grant or within one (1) year
after such shares of Common Stock are transferred upon exercise of your option. 
 (d)    By accepting your
option you agree that you will not sell, dispose of, transfer, make any short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale with respect to any shares of
Common Stock or other securities of the Company held by you, for a period of one hundred eighty (180) days following the effective date of a registration statement of the Company filed under the Securities Act or such longer period as the
underwriters or the Company will request to facilitate compliance with FINRA Rule 2241 or any successor or similar rules or regulation (the “Lock-Up Period”); provided, however, that nothing
contained in this section will prevent the exercise of a repurchase option, if any, in favor of the Company during the Lock-Up Period. You further agree to execute and deliver such other agreements as may be
reasonably requested by the Company or the underwriters that are consistent with the foregoing or that are necessary to give further effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with
respect to your shares of Common Stock until the end of such period. You also agree that any transferee of any shares of Common Stock (or other securities) of the Company held by you will be bound by this Section 8(d). The underwriters of the
Company’s stock are intended third party beneficiaries of this Section 8(d) and will have the right, power and authority to enforce the provisions hereof as though they were a party hereto. 

  
 43 

 Director/Executive Officer Form 

 
 9.    TRANSFERABILITY.
Except as otherwise provided in this Section 9, your option is not transferable, except by will or by the laws of descent and distribution, and is exercisable during your life only by you. 

(a)    Certain Trusts. Upon receiving written permission from the Board or its duly authorized designee, you
may transfer your option to a trust if you are considered to be the sole beneficial owner (determined under Section 671 of the Code and applicable state law) while the option is held in the trust. You and the trustee must enter into transfer
and other agreements required by the Company. 
 (b)    Domestic Relations Orders. Upon receiving written
permission from the Board or its duly authorized designee, and provided that you and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your option pursuant to the terms of a domestic
relations order, official marital settlement agreement or other divorce or separation instrument as permitted by Treasury Regulation 1.421-1(b)(2) that contains the information required by the Company to
effectuate the transfer. You are encouraged to discuss the proposed terms of any division of this option with the Company prior to finalizing the domestic relations order or marital settlement agreement to help ensure the required information is
contained within the domestic relations order or marital settlement agreement. If this option is an Incentive Stock Option, this option may be deemed to be a Nonstatutory Stock Option as a result of such transfer. 

(c)    Beneficiary Designation. Upon receiving written permission from the Board or its duly authorized
designee, you may, by delivering written notice to the Company, in a form approved by the Company and any broker designated by the Company to handle option exercises, designate a third party who, on your death, will thereafter be entitled to
exercise this option and receive the Common Stock or other consideration resulting from such exercise. In the absence of such a designation, your executor or administrator of your estate will be entitled to exercise this option and receive, on
behalf of your estate, the Common Stock or other consideration resulting from such exercise. 

10.    OPTION NOT A SERVICE
CONTRACT. Your option is not an employment or service contract, and nothing in your option will be deemed to create in any way whatsoever any obligation on your part to continue in the employ of the Company or an Affiliate, or of
the Company or an Affiliate to continue your employment. In addition, nothing in your option will obligate the Company or an Affiliate, their respective stockholders, boards of directors, officers or employees to continue any relationship that you
might have as a Director or Consultant for the Company or an Affiliate. 
 11.    WITHHOLDING
OBLIGATIONS. 
 (a)    At the time you exercise your option, in whole or in part, and at any
time thereafter as requested by the Company, you hereby authorize withholding from payroll and any other amounts payable to you, and otherwise agree to make adequate provision for (including by means of a “same day sale” pursuant to a
program developed under Regulation T as promulgated by the Federal Reserve Board to the extent permitted by the Company), any sums required to satisfy the federal, state, local and foreign tax withholding obligations of the Company or an Affiliate,
if any, which arise in connection with the exercise of your option. 
 (b)    If this option is a Nonstatutory
Stock Option, then upon your request and subject to approval by the Company, and compliance with any applicable legal conditions or restrictions, the Company may withhold from fully vested shares of Common Stock otherwise issuable to you upon the

  
 44 

 Director/Executive Officer Form 

 
 exercise of your option a number of whole shares of Common Stock having a Fair Market
Value, determined by the Company as of the date of exercise, not in excess of the amount necessary to satisfy the withholding obligation using the maximum statutory withholding rates for federal, state, local and foreign tax purposes, including
payroll taxes, that are applicable to supplemental income. Any adverse consequences to you arising in connection with such share withholding procedure shall be your sole responsibility. 

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

12.    TAX CONSEQUENCES. You hereby agree that the Company does
not have a duty to design or administer the Plan or its other compensation programs in a manner that minimizes your tax liabilities. You will not make any claim against the Company, or any of its Officers, Directors, Employees or Affiliates related
to tax liabilities arising from your option or your other compensation. In particular, you acknowledge that this option is exempt from Section 409A of the Code only if the exercise price per share specified in the Grant Notice is at least equal
to the “fair market value” per share of the Common Stock on the Date of Grant and there is no other impermissible deferral of compensation associated with the option. 

13.    NOTICES. Any notices provided for in your option or the Plan will be given in writing
(including electronically) and will be deemed effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United States mail, postage prepaid, addressed to you at the
last address you provided to the Company. The Company may, in its sole discretion, decide to deliver any documents related to participation in the Plan and this option by electronic means or to request your consent to participate in the Plan by
electronic means. By accepting this option, you consent to receive such documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and maintained by the
Company or another third party designated by the Company. 
 14.    GOVERNING
PLAN DOCUMENT. Your option is subject to all the provisions of the Plan, the provisions of which are hereby made a part of your option, and is further subject to all interpretations, amendments, rules and
regulations, which may from time to time be promulgated and adopted pursuant to the Plan. If there is any conflict between the provisions of your option and those of the Plan, the provisions of the Plan will control. In addition, your option (and
any compensation paid or shares issued under your option) is subject to recoupment in accordance with The Dodd–Frank Wall Street Reform and Consumer Protection Act and any implementing regulations thereunder, any clawback policy adopted by the
Company and any compensation recovery policy otherwise required by applicable law. 

15.    OTHER DOCUMENTS. You hereby acknowledge receipt of and the right to
receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act, which includes the Plan prospectus. In addition, you acknowledge receipt of the Company’s policy permitting certain individuals to
sell shares only during certain “window” periods and the Company’s insider trading policy, in effect from time to time. 

16.    EFFECT ON OTHER EMPLOYEE
BENEFIT PLANS. The value of this option will not be included as compensation, earnings, salaries, or other similar terms used when calculating your benefits under any employee benefit plan sponsored by the Company
or any Affiliate, except as such plan otherwise expressly provides. The Company expressly reserves its rights to amend, modify, or terminate any of the Company’s or any Affiliate’s employee benefit plans. 

  
 45 

 Director/Executive Officer Form 

 
 17.    VOTING
RIGHTS. You will not have voting or any other rights as a stockholder of the Company with respect to the shares to be issued pursuant to this option until such shares are issued to you. Upon such issuance, you will obtain full
voting and other rights as a stockholder of the Company. Nothing contained in this option, and no action taken pursuant to its provisions, will create or be construed to create a trust of any kind or a fiduciary relationship between you and the
Company or any other person. 
 18.    SEVERABILITY. If all or any part of this Option
Agreement or the Plan is declared by any court or governmental authority to be unlawful or invalid, such unlawfulness or invalidity will not invalidate any portion of this Option Agreement or the Plan not declared to be unlawful or invalid. Any
Section of this Option Agreement (or part of such a Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible
while remaining lawful and valid. 
 19.    MISCELLANEOUS. 

(a)    The rights and obligations of the Company under your option will be transferable to any one or more persons
or entities, and all covenants and agreements hereunder will inure to the benefit of, and be enforceable by the Company’s successors and assigns. 

(b)    You agree upon request to execute any further documents or instruments necessary or desirable in the sole
determination of the Company to carry out the purposes or intent of your option. 
 (c)    You acknowledge and
agree that you have reviewed your option in its entirety, have had an opportunity to obtain the advice of counsel prior to executing and accepting your option, and fully understand all provisions of your option. 

(d)    This Option Agreement will be subject to all applicable laws, rules, and regulations, and to such approvals
by any governmental agencies or national securities exchanges as may be required. 
 (e)    All obligations of
the Company under the Plan and this Option Agreement will be binding on any successor to the Company, whether the existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or
substantially all of the business and/or assets of the Company. 
 *        *    
    * 
 This Option Agreement will be deemed to be signed by you upon the signing by you of the Stock Option Grant
Notice to which it is attached. 

  
 46 

 Director/Executive Officer Form 

 
 ATTACHMENT II 

2018 EQUITY INCENTIVE PLAN 

 

  
 47 

 ATTACHMENT III 

NOTICE OF EXERCISE 

TENABLE HOLDINGS, INC. 

			
	7021 Columbia Gateway Dr.	  	Date of Exercise:                         

 Columbia, MD 21046 

This constitutes notice to Tenable Holdings, Inc. (the “Company”) under my stock option that I elect to purchase the
below number of shares of Common Stock of the Company (the “Shares”) for the price set forth below. 
  

									
	 Type of option (check one):
	  	 	Incentive ☐	 	 	 	Nonstatutory ☐	 
			
	 Stock option dated:
	  				 			
		  	  
	  
	 	 	  
	  
	 
			
	 Number of Shares as to which option is exercised:
	  				 			
		  	  
	  
	 	 	  
	  
	 
			
	 Certificates to be issued in name of:
	  				 			
		  	  
	  
	 	 	  
	  
	 
	 Total exercise price:
	  	$	                    	 	 	$	                        	 
			
	 Cash payment delivered herewith:
	  	$	                    	 	 	$	                        	 
			
	 [Value of
                 Shares delivered herewith1:
	  	$	                    	 	 	$	                        	] 
			
	 [Value of
                 Shares pursuant to net exercise2:
	  	$	                    	 	 	$	                        	] 
			
	 [Regulation T Program (cashless
exercise3):
	  	$	                    	 	 	$	                        	] 

  

	1 	Shares must meet the public trading requirements set forth in the option. Shares must be valued in accordance with the terms of the option being exercised, and must be owned free and clear of any liens, claims,
encumbrances or security interests. Certificates must be endorsed or accompanied by an executed assignment separate from certificate. 

	2 	The option must be a Nonstatutory Stock Option, and the Company must have established net exercise procedures at the time of exercise, in order to utilize this payment method. 

	3 	Shares must meet the public trading requirements set forth in the option. 

  
 48 

 By this exercise, I agree (i) to provide such additional documents as you may require
pursuant to the terms of the Tenable Holdings, Inc. 2018 Equity Incentive Plan, (ii) to provide for the payment by me to you (in the manner designated by you) of your withholding obligation, if any, relating to the exercise of this option, and
(iii) if this exercise relates to an incentive stock option, to notify you in writing within fifteen (15) days after the date of any disposition of any of the Shares issued upon exercise of this option that occurs within two (2) years
after the date of grant of this option or within one (1) year after such Shares are issued upon exercise of this option. 
 I further
agree that, if required by the Company (or a representative of the underwriters) in connection with the first underwritten registration of the offering of any securities of the Company under the Securities Act, I will not sell, dispose of, transfer,
make any short sale of, grant any option for the purchase of, or enter into any hedging or similar transaction with the same economic effect as a sale with respect to any shares of Common Stock or other securities of the Company for a period of one
hundred eighty (180) days following the effective date of a registration statement of the Company filed under the Securities Act (or such longer period as the underwriters or the Company shall request to facilitate compliance with FINRA Rule
2241 or any successor or similar rule or regulation) (the “Lock-Up Period”). I further agree to execute and deliver such other agreements as may be reasonably requested by the Company
or the underwriters that are consistent with the foregoing or that are necessary to give further effect thereto. In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions
with respect to securities subject to the foregoing restrictions until the end of such period. 
  

	
	Very truly yours,
	    
	  

  
 49 

 TENABLE HOLDINGS, INC. 

RESTRICTED STOCK UNIT GRANT NOTICE 

(2018 EQUITY INCENTIVE PLAN) 

Tenable Holdings, Inc. (the “Company”), pursuant to its 2018 Equity Incentive Plan (the “Plan”), hereby awards
to Participant a Restricted Stock Unit Award for the number of shares of the Company’s Common Stock (“Restricted Stock Units”) set forth below (the “Award”). The Award is subject to all of the
terms and conditions as set forth in this notice of grant (this “Restricted Stock Unit Grant Notice”), and in the Plan and the Restricted Stock Unit Award Agreement (the “Award Agreement”), both of
which are attached hereto and incorporated herein in their entirety. Capitalized terms not explicitly defined herein shall have the meanings set forth in the Plan or the Award Agreement. In the event of any conflict between the terms in this
Restricted Stock Unit Grant Notice or the Award Agreement and the Plan, the terms of the Plan shall control. 
  

			
	 Participant:
	  	  

	 Date of Grant:
	  	  

	 Vesting Commencement Date:
	  	  

	 Number of Restricted Stock Units:
	  	  

  

			
	Vesting Schedule:	  	[                    , subject to Participant’s Continuous Service through each such vesting date.]
		
	Issuance Schedule:	  	Subject to any Capitalization Adjustment, one share of Common Stock (or its cash equivalent, at the discretion of the Company) will be issued for each Restricted Stock Unit that vests at the time set forth in Section 6 of
the Award Agreement.

 Additional Terms/Acknowledgements: Participant acknowledges receipt of, and understands and agrees to, this Restricted
Stock Unit Grant Notice, the Award Agreement and the Plan. Participant acknowledges and agrees that this Restricted Stock Unit Grant Notice and the Award Agreement may not be modified, amended, or revised except as provided in the Plan. Participant
further acknowledges that as of the Date of Grant, this Restricted Stock Unit Grant Notice, the Award Agreement and the Plan set forth the entire understanding between Participant and the Company regarding the acquisition of the Common Stock
pursuant to the Award specified above and supersede all prior oral and written agreements on the terms of this Award, with the exception, if applicable, of (i) equity awards previously granted and delivered to Participant, (ii) any
compensation recovery policy that is adopted by the Company or is otherwise required by applicable law and (iii) any written employment or severance arrangement or other written agreement entered into between the Company and Participant
specifying the terms that should govern this Award upon the terms and conditions set forth therein. 

  
 50 

 By accepting this Award, Participant acknowledges having received and read the Restricted Stock Unit Grant
Notice, the Award Agreement and the Plan and agrees to all of the terms and conditions set forth in these documents. Participant consents to receive Plan and related documents by electronic delivery and to participate in the Plan through an on-line or electronic system established and maintained by the Company or another third party designated by the Company. 
  

									
	TENABLE HOLDINGS, INC.	 		 	PARTICIPANT
				
	By:	 	  
	 		 	     

		 	Signature	 		 		 	Signature
					
	Title:	 	  
	 		 	Date:	 	  

					
	Date:	 	  
	 		 		 	

 ATTACHMENTS: Award Agreement and 2018 Equity Incentive Plan 

  
 51 

 ATTACHMENT I 

TENABLE HOLDINGS, INC. 

2018 EQUITY INCENTIVE PLAN 

RESTRICTED STOCK UNIT AWARD AGREEMENT 

Pursuant to the Restricted Stock Unit Grant Notice (the “Grant Notice”) and this Restricted Stock Unit Award Agreement
(the “Agreement”), Tenable Holdings, Inc. (the “Company”) has awarded you (“Participant”) a Restricted Stock Unit Award (the “Award”) pursuant to the
Company’s 2018 Equity Incentive Plan (the “Plan”) for the number of Restricted Stock Units/shares indicated in the Grant Notice. Capitalized terms not explicitly defined in this Agreement or the Grant Notice shall have
the same meanings given to them in the Plan. The terms of your Award, in addition to those set forth in the Grant Notice, are as follows. 

1.    GRANT OF THE AWARD. This Award represents
the right to be issued on a future date one (1) share of Common Stock for each Restricted Stock Unit that vests on the applicable vesting date(s) (subject to any adjustment under Section 3 below) as indicated in the Grant Notice. As of the
Date of Grant, the Company will credit to a bookkeeping account maintained by the Company for your benefit (the “Account”) the number of Restricted Stock Units/shares of Common Stock subject to the Award. Notwithstanding the
foregoing, the Company reserves the right to issue you the cash equivalent of Common Stock, in part or in full satisfaction of the delivery of Common Stock in connection with the vesting of the Restricted Stock Units, and, to the extent applicable,
references in this Agreement and the Grant Notice to Common Stock issuable in connection with your Restricted Stock Units will include the potential issuance of its cash equivalent pursuant to such right. This Award was granted in consideration of
your services to the Company. 
 2.    VESTING. Subject to the limitations contained
herein, your Award will vest, if at all, in accordance with the vesting schedule provided in the Grant Notice. Vesting will cease upon the termination of your Continuous Service and the Restricted Stock Units credited to the Account that were not
vested on the date of such termination will be forfeited at no cost to the Company and you will have no further right, title or interest in or to such Award or the shares of Common Stock to be issued in respect of such portion of the Award. 

3.    NUMBER OF SHARES. The number of Restricted Stock Units
subject to your Award may be adjusted from time to time for Capitalization Adjustments, as provided in the Plan. Any additional Restricted Stock Units, shares, cash or other property that becomes subject to the Award pursuant to this Section 3,
if any, shall be subject, in a manner determined by the Board, to the same forfeiture restrictions, restrictions on transferability, and time and manner of delivery as applicable to the other Restricted Stock Units and shares covered by your Award.
Notwithstanding the provisions of this Section 3, no fractional shares or rights for fractional shares of Common Stock shall be created pursuant to this Section 3. Any fraction of a share will be rounded down to the nearest whole share.

 4.    SECURITIES LAW COMPLIANCE. You may
not be issued any Common Stock under your Award unless the shares of Common Stock underlying the Restricted Stock Units are either (i) then registered under the Securities Act, or (ii) the Company has determined that such issuance would be
exempt from the registration requirements of the Securities Act. Your Award must also comply with other applicable laws and regulations governing the Award, and you shall not receive such Common Stock if the Company determines that such receipt
would not be in material compliance with such laws and regulations. 

  
 52 

 5.    TRANSFER
RESTRICTIONS. Prior to the time that shares of Common Stock have been delivered to you, you may not transfer, pledge, sell or otherwise dispose of this Award or the shares issuable in respect of your Award, except
as expressly provided in this Section 5. For example, you may not use shares that may be issued in respect of your Restricted Stock Units as security for a loan. The restrictions on transfer set forth herein will lapse upon delivery to you of
shares in respect of your vested Restricted Stock Units. 
 (a) Death. Your Award is transferable by will and by the laws of descent
and distribution. At your death, vesting of your Award will cease and your executor or administrator of your estate shall be entitled to receive, on behalf of your estate, any Common Stock or other consideration that vested but was not issued before
your death. 
 (b) Domestic Relations Orders. Upon receiving written permission from the Board or its duly authorized designee, and
provided that you and the designated transferee enter into transfer and other agreements required by the Company, you may transfer your right to receive the distribution of Common Stock or other consideration hereunder, pursuant to a domestic
relations order, marital settlement agreement or other divorce or separation instrument as permitted by applicable law that contains the information required by the Company to effectuate the transfer. You are encouraged to discuss the proposed terms
of any division of this Award with the Company General Counsel prior to finalizing the domestic relations order or marital settlement agreement to verify that you may make such transfer, and if so, to help ensure the required information is
contained within the domestic relations order or marital settlement agreement. 
 6.    DATE
OF ISSUANCE. 
 (a) The issuance of shares in respect of the Restricted Stock Units is intended to
comply with Treasury Regulations Section 1.409A-1(b)(4) and will be construed and administered in such a manner. Subject to the satisfaction of the Withholding Obligation set forth in Section 11 of
this Agreement, in the event one or more Restricted Stock Units vests, the Company shall issue to you one (1) share of Common Stock for each Restricted Stock Unit that vests on the applicable vesting date(s) (subject to any adjustment under
Section 3 above, and subject to any different provisions in the Grant Notice). Each issuance date determined by this paragraph is referred to as an “Original Issuance Date”. 

(b) If the Original Issuance Date falls on a date that is not a business day, delivery shall instead occur on the next following
business day. In addition, if: 
 (i) the Original Issuance Date does not occur (1) during an “open window period”
applicable to you, as determined by the Company in accordance with the Company’s then-effective policy on trading in Company securities, or (2) on a date when you are otherwise permitted to sell shares of Common Stock on an established
stock exchange or stock market (including but not limited to under a previously established written trading plan that meets the requirements of Rule 10b5-1 under the Exchange Act and was entered into in
compliance with the Company’s policies (a “10b5-1 Arrangement”)), and 

(ii) either (1) a Withholding Obligation does not apply, or (2) the Company decides, prior to the Original Issuance Date,
(A) not to satisfy the Withholding Obligation by withholding shares of Common Stock from the shares otherwise due, on the Original Issuance Date, to you under this Award, and (B) not to permit you to enter into a “same day sale”
commitment with a broker-dealer pursuant to Section 11 of this Agreement (including but not limited to a commitment under a 10b5-1 Arrangement) and (C) not to permit you to pay your Withholding
Obligation in cash, 

  
 53 

 then the shares that would otherwise be issued to you on the Original Issuance Date will
not be delivered on such Original Issuance Date and will instead be delivered on the first business day when you are not prohibited from selling shares of the Company’s Common Stock in the open public market, but in no event later than
December 31 of the calendar year in which the Original Issuance Date occurs (that is, the last day of your taxable year in which the Original Issuance Date occurs), or, if and only if permitted in a manner that complies with Treasury
Regulations Section 1.409A-1(b)(4), no later than the date that is the 15th day of the third calendar month of the applicable year following the year in which the shares of Common Stock under this Award
are no longer subject to a “substantial risk of forfeiture” within the meaning of Treasury Regulations Section 1.409A-1(d). 

(c) The form of delivery (e.g., a stock certificate or electronic entry evidencing such shares) shall be determined by the
Company. 
 7.    DIVIDENDS. You shall receive no benefit or adjustment to your Award with
respect to any cash dividend, stock dividend or other distribution that does not result from a Capitalization Adjustment; provided, however, that this sentence will not apply with respect to any shares of Common Stock that are delivered to you in
connection with your Award after such shares have been delivered to you. 
 8.    RESTRICTIVE
LEGENDS. The shares of Common Stock issued in respect of your Award shall be endorsed with appropriate legends as determined by the Company. 

9.    EXECUTION OF DOCUMENTS. You hereby acknowledge and agree
that the manner selected by the Company by which you indicate your consent to your Grant Notice is also deemed to be your execution of your Grant Notice and of this Agreement. You further agree that such manner of indicating consent may be relied
upon as your signature for establishing your execution of any documents to be executed in the future in connection with your Award. 

10.    AWARD NOT A SERVICE
CONTRACT. 
 (a) Nothing in this Agreement (including, but not limited to, the vesting of your Award
or the issuance of the shares in respect of your Award), the Plan or any covenant of good faith and fair dealing that may be found implicit in this Agreement or the Plan shall: (i) confer upon you any right to continue in the employ or service
of, or affiliation with, the Company or an Affiliate; (ii) constitute any promise or commitment by the Company or an Affiliate regarding the fact or nature of future positions, future work assignments, future compensation or any other term or
condition of employment or affiliation; (iii) confer any right or benefit under this Agreement or the Plan unless such right or benefit has specifically accrued under the terms of this Agreement or Plan; or (iv) deprive the Company of the
right to terminate you at will and without regard to any future vesting opportunity that you may have. 
 (b) By accepting this
Award, you acknowledge and agree that the right to continue vesting in the Award pursuant to the vesting schedule provided in the Grant Notice may not be earned unless (in addition to any other conditions described in the Grant Notice and this
Agreement) you continue as an employee, director or consultant at the will of the Company and affiliate, as applicable (not through the act of being hired, being granted this Award or any other award or benefit) and that the Company has the right to
reorganize, sell, spin-out or otherwise restructure one or more of its businesses or Affiliates at any time or from time to time, as it deems appropriate (a “reorganization”). You
acknowledge and agree that such a reorganization could result in the termination of your Continuous Service, or the termination of Affiliate status of your employer and the loss of benefits available to you under this Agreement, including but not
limited to, the termination of the right to continue vesting in the Award. You further acknowledge and agree that this Agreement, the Plan, the transactions contemplated 

  
 54 

 
hereunder and the vesting schedule set forth herein or any covenant of good faith and fair dealing that may be found implicit in any of them do not constitute an express or implied promise of
continued engagement as an employee or consultant for the term of this Agreement, for any period, or at all, and shall not interfere in any way with the Company’s right to terminate your Continuous Service at any time, with or without your
cause or notice, or to conduct a reorganization. 
 11.    WITHHOLDING OBLIGATION.

 (a) On each vesting date, and on or before the time you receive a distribution of the shares of Common Stock in respect of your
Restricted Stock Units, and at any other time as reasonably requested by the Company in accordance with applicable tax laws, you hereby authorize any required withholding from the Common Stock issuable to you and/or otherwise agree to make adequate
provision, including in cash, for any sums required to satisfy the federal, state, local and foreign tax withholding obligations of the Company or any Affiliate that arise in connection with your Award (the “Withholding
Obligation”). 
 (b) By accepting this Award, you acknowledge and agree that the Company or any Affiliate may, in its sole
discretion, satisfy all or any portion of the Withholding Obligation relating to your Restricted Stock Units by any of the following means or by a combination of such means: (i) causing you to pay any portion of the Withholding Obligation in
cash; (ii) withholding from any compensation otherwise payable to you by the Company; (iii) withholding shares of Common Stock from the shares of Common Stock issued or otherwise issuable to you in connection with the Award with a Fair
Market Value (measured as of the date shares of Common Stock are issued pursuant to Section 6) equal to the amount of such Withholding Obligation; provided, however, that the number of such shares of Common Stock so withheld will not exceed the
amount necessary to satisfy the Withholding Obligation using the maximum statutory withholding rates for federal, state, local and foreign tax purposes, including payroll taxes, that are applicable to supplemental taxable income; and
provided, further, that to the extent necessary to qualify for an exemption from application of Section 16(b) of the Exchange Act, if applicable, such share withholding procedure will be subject to the express prior approval of the Board
or the Company’s Compensation Committee; and/or (iv) permitting or requiring you to enter into a “same day sale” commitment, if applicable, with a broker-dealer that is a member of the Financial Industry Regulatory Authority (a
“FINRA Dealer”), pursuant to this authorization and without further consent, whereby you irrevocably elect to sell a portion of the shares to be delivered in connection with your Restricted Stock Units to satisfy the
Withholding Obligation and whereby the FINRA Dealer irrevocably commits to forward the proceeds necessary to satisfy the Withholding Obligation directly to the Company and/or its Affiliates. Unless the Withholding Obligation is satisfied, the
Company shall have no obligation to deliver to you any Common Stock or any other consideration pursuant to this Award. 
 (c) In the event
the Withholding Obligation arises prior to the delivery to you of Common Stock or it is determined after the delivery of Common Stock to you that the amount of the Withholding Obligation was greater than the amount withheld by the Company, you agree
to indemnify and hold the Company harmless from any failure by the Company to withhold the proper amount. 

12.    TAX CONSEQUENCES. The Company has no duty or obligation to minimize the
tax consequences to you of this Award and shall not be liable to you for any adverse tax consequences to you arising in connection with this Award. You are hereby advised to consult with your own personal tax, financial and/or legal advisors
regarding the tax consequences of this Award and by signing the Grant Notice, you have agreed that you have done so or knowingly and voluntarily declined to do so. You understand that you (and not the Company) shall be responsible for your own tax
liability that may arise as a result of this investment or the transactions contemplated by this Agreement. 

  
 55 

 13.    UNSECURED OBLIGATION. Your
Award is unfunded, and as a holder of a vested Award, you shall be considered an unsecured creditor of the Company with respect to the Company’s obligation, if any, to issue shares or other property pursuant to this Agreement. You shall not
have voting or any other rights as a stockholder of the Company with respect to the shares to be issued pursuant to this Agreement until such shares are issued to you pursuant to Section 6 of this Agreement. Upon such issuance, you will obtain
full voting and other rights as a stockholder of the Company. Nothing contained in this Agreement, and no action taken pursuant to its provisions, shall create or be construed to create a trust of any kind or a fiduciary relationship between you and
the Company or any other person. 
 14.    NOTICES. Any notice or request
required or permitted hereunder shall be given in writing (including electronically) and will be deemed effectively given upon receipt or, in the case of notices delivered by mail by the Company to you, five (5) days after deposit in the United
States mail, postage prepaid, addressed to you at the last address you provided to the Company. The Company may, in its sole discretion, decide to deliver any documents related to participation in the Plan and this Award by electronic means or to
request your consent to participate in the Plan by electronic means. By accepting this Award, you consent to receive such documents by electronic delivery and to participate in the Plan through an on-line or
electronic system established and maintained by the Company or another third party designated by the Company. 

15.    HEADINGS. The headings of the Sections in this Agreement are inserted
for convenience only and shall not be deemed to constitute a part of this Agreement or to affect the meaning of this Agreement. 

16.    MISCELLANEOUS. 

(a) The rights and obligations of the Company under your Award shall be transferable by the Company to any one or more persons or
entities, and all covenants and agreements hereunder shall inure to the benefit of, and be enforceable by, the Company’s successors and assigns. 

(b) You agree upon request to execute any further documents or instruments necessary or desirable in the sole determination of the
Company to carry out the purposes or intent of your Award. 
 (c) You acknowledge and agree that you have reviewed your Award in its
entirety, have had an opportunity to obtain the advice of counsel prior to executing and accepting your Award and fully understand all provisions of your Award. 

(d) This Agreement shall be subject to all applicable laws, rules, and regulations, and to such approvals by any governmental agencies
or national securities exchanges as may be required. 
 (e) All obligations of the Company under the Plan and this Agreement shall be
binding on any successor to the Company, whether the existence of such successor is the result of a direct or indirect purchase, merger, consolidation, or otherwise, of all or substantially all of the business and/or assets of the Company. 

17.    GOVERNING PLAN DOCUMENT. Your Award is
subject to all the provisions of the Plan, the provisions of which are hereby made a part of your Award, and is further subject to all interpretations, amendments, rules and regulations which may from time to time be promulgated and adopted pursuant
to the Plan. Your Award (and any compensation paid or shares issued under your Award) is subject to recoupment in accordance with The Dodd–Frank Wall Street Reform and Consumer Protection Act and any implementing regulations thereunder, any
clawback policy adopted by the Company and any 

  
 56 

 
compensation recovery policy otherwise required by applicable law. No recovery of compensation under such a clawback policy will be an event giving rise to a right to voluntarily terminate
employment upon a resignation for “good reason,” or for a “constructive termination” or any similar term under any plan of or agreement with the Company. 

18.    EFFECT ON OTHER EMPLOYEE
BENEFIT PLANS. The value of the Award subject to this Agreement shall not be included as compensation, earnings, salaries, or other similar terms used when calculating benefits under any employee benefit plan (other
than the Plan) sponsored by the Company or any Affiliate except as such plan otherwise expressly provides. The Company expressly reserves its rights to amend, modify, or terminate any or all of the employee benefit plans of the Company or any
Affiliate. 
 19.    SEVERABILITY. If all or any part of this Agreement or
the Plan is declared by any court or governmental authority to be unlawful or invalid, such unlawfulness or invalidity shall not invalidate any portion of this Agreement or the Plan not declared to be unlawful or invalid. Any Section of this
Agreement (or part of such a Section) so declared to be unlawful or invalid shall, if possible, be construed in a manner which will give effect to the terms of such Section or part of a Section to the fullest extent possible while remaining lawful
and valid. 
 20.    OTHER DOCUMENTS. You hereby acknowledge
receipt or the right to receive a document providing the information required by Rule 428(b)(1) promulgated under the Securities Act. In addition, you acknowledge receipt of the Company’s policy permitting certain individuals to sell shares
only during certain “window” periods and the Company’s insider trading policy, in effect from time to time. 

21.    AMENDMENT. This Agreement may not be modified, amended or terminated except by an
instrument in writing, signed by you and by a duly authorized representative of the Company. Notwithstanding the foregoing, this Agreement may be amended solely by the Board by a writing which specifically states that it is amending this Agreement,
so long as a copy of such amendment is delivered to you, and provided that, except as otherwise expressly provided in the Plan, no such amendment materially adversely affecting your rights hereunder may be made without your written consent. Without
limiting the foregoing, the Board reserves the right to change, by written notice to you, the provisions of this Agreement in any way it may deem necessary or advisable to carry out the purpose of the Award as a result of any change in applicable
laws or regulations or any future law, regulation, ruling, or judicial decision, provided that any such change shall be applicable only to rights relating to that portion of the Award which is then subject to restrictions as provided herein. 

22.    COMPLIANCE WITH
SECTION 409A OF THE CODE. This Award is intended to be exempt from the application of Section 409A of the
Code, including but not limited to by reason of complying with the “short-term deferral” rule set forth in Treasury Regulation Section 1.409A-1(b)(4) and any ambiguities herein shall be
interpreted accordingly. Notwithstanding the foregoing, if it is determined that the Award fails to satisfy the requirements of the short-term deferral rule and is otherwise not exempt from, and determined to be deferred compensation subject to
Section 409A of the Code, this Award shall comply with Section 409A to the extent necessary to avoid adverse personal tax consequences and any ambiguities herein shall be interpreted accordingly. If it is determined that the Award is
deferred compensation subject to Section 409A and you are a “Specified Employee” (within the meaning set forth in Section 409A(a)(2)(B)(i) of the Code) as of the date of your “Separation from Service” (as defined in
Section 409A), then the issuance of any shares that would otherwise be made upon the date of your Separation from Service or within the first six (6) months thereafter will not be made on the originally scheduled date(s) and will instead
be issued in a lump sum on the date that is six (6) months and one day after the date of the Separation from Service, with the balance of the shares issued thereafter 

  
 57 

 
in accordance with the original vesting and issuance schedule set forth above, but if and only if such delay in the issuance of the shares is necessary to avoid the imposition of adverse taxation
on you in respect of the shares under Section 409A of the Code. Each installment of shares that vests is intended to constitute a “separate payment” for purposes of Treasury Regulation
Section 1.409A-2(b)(2).  
 * * * * * 

This Restricted Stock Unit Award Agreement shall be deemed to be signed by the Company and the Participant upon the signing by the Participant
of the Restricted Stock Unit Grant Notice to which it is attached. 

  
 58 

 ATTACHMENT II 

2018 EQUITY INCENTIVE PLAN 

  
 59

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00285-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00285-of-00352.parquet"}]]