Document:

EX-10.2

 Exhibit 10.2 
  

 
 

 
 November 10, 2019 

Mr. Dhrupad Trivedi 
 Dear Dhrupad, 

I am pleased to confirm the offer for you to join A10 Networks, Inc. (the “Company”), in the position of Chief Executive Officer (CEO) at our
Corporate Headquarters located in San Jose, CA. This is a full-time, regular position, reporting to the Board of Directors of the Company (the “Board”). The terms of our offer and the benefits currently provided by the Company are
as follows: 
 Within 30 days from your first date of employment with the Company (“Start Date”), the Company will appoint you to the Board. Upon
the termination of your employment with the Company for any reason, unless otherwise requested by the Board, you will be deemed to have resigned from the Board (and all other positions held at the Company or any affiliate) without any further
required action by you and you agree to execute any documents necessary to reflect this resignation. During the term of your employment, you shall devote your full business efforts and time to the Company. 

Salary. Your starting base salary will be at a rate of $500,000 per year subject to annual review, less applicable taxes and other withholdings
in accordance with the Company’s normal payroll schedule. 
 Incentive. Commencing in 2020, you will be eligible to receive
an annual performance-based bonus target of one hundred percent (100%) of your annual salary, pursuant to the Company’s bonus program for the 2020 year established under the Company’s Executive Incentive Compensation Plan. Your
participation in the Company’s bonus program for 2020 will be subject to all of the terms and conditions of the Company’s Executive Incentive Compensation Plan, including without limitation that unless determined otherwise by such
Plan’s administrator, you must remain an employee through the date of payment of the bonus in order to receive such payment. Your target bonus shall be subject to annual review by the Board or its Compensation Committee, as applicable,
commencing with the Company’s bonus program for the 2021 year. 
 Restricted Stock Unit Grant. Subject to the approval of the
Board (or its Compensation Committee, as applicable) after your Start Date, you will be granted an award of restricted stock units (the “RSU Award”) to cover 125,000 shares of the Company’s Common Stock under the Company’s
2014 Equity Incentive Plan, as amended (the “Plan”), and an award agreement under the Plan. Each restricted stock unit granted represents the right to receive one share of the Company’s Common Stock upon vesting. Twenty-five percent
(25%) of the recommended RSU Award shall be scheduled to vest on each yearly anniversary of your vest base date (assuming your continued employment with the Company on each vesting date) such that the entire RSU Award shall vest over four
(4) years (for administrative reasons, the vest base date will be the 5th day of the month following the Start Date). The RSU Award will be subject to any accelerated vesting provisions and other applicable terms set forth in your Change in
Control and Severance Agreement (the “Acceleration Provisions”). 
 Performance Stock Unit Grant. In addition, subject to
approval of the Board of Directors (or its Compensation Committee, as applicable), after your Start Date, you will be granted an award of performance-based restricted stock units (the “PSU Awards”) to cover an aggregate of 375,000 shares
of the Company’s Common Stock under the Plan and award agreement under the Plan. Each PSU granted represents the right to receive one share of the Company’s Common Stock subject to achievement of certain performance milestones (the
“Performance Milestones”), as well as continued service to the Company through specified dates. Upon achievement of any one of the three Performance Milestones described below, one-third (1/3rd) of the PSU Award will become eligible to vest (each, an “Eligible Portion”). The following Performance Milestones will apply to the PSU Award: 

 

	 	•	 	 $8.50 Performance Milestone: 125,000 shares of the Company’s common stock subject to the PSU Award
will become eligible to vest upon the achievement of $8.50 or greater with respect to the average, trailing, one hundred (100) day closing price of a share of the Company’s common stock (the
“100-Day Stock Price”) during the period beginning on the grant date of the PSU Award and ending on the four (4) year anniversary of such grant date (the “Performance Period”).

  

							
		 	A10 Networks, Inc.	 	3 West Plumeria Drive	 	T: 408. 325. 8668
		 	www.a10networks.com	 	San Jose, CA 95134	 	F: 408. 325. 8666

 

 
  

	 	•	 	 $9.50 Performance Milestone: 125,000 shares of the Company’s common stock subject to the PSU Award
will become eligible to vest upon the achievement of $9.50 or greater with respect to the 100-Day Stock Price during the Performance Period. 

 

	 	•	 	 $10.50 Performance Milestone: 125,000 shares of the Company’s common stock subject to the PSU Award
will become eligible to vest upon the achievement of $10.50 or greater with respect to the 100-Day Stock Price during the Performance Period. 

The Board (or its Compensation Committee, as applicable) periodically, as well as at completion of the Performance Period, will determine whether any of the
Performance Milestones have been achieved during the Performance Period. Any Eligible Portion will be scheduled to vest as to one-third (1/3rd) of the
Eligible Portion on each of the one (1), two (2), and three (3) year anniversaries of the date of achievement of the corresponding Performance Milestone, subject to your continuing to provide services to the Company through the applicable
vesting date and subject to the Acceleration Provisions and the following provisions relating to a CIC. If there is a CIC during the Performance Period, then the following treatment will apply to the PSU Award: 

 

	a.	 CIC Performance Measurement. 

i.    Measurement Based on Deal Price. If a CIC occurs on or after the one (1) year anniversary of your Start
Date and any Performance Milestone has not yet been met, then the Deal Price (as defined below) will be measured against such Performance Milestone shortly before the completion of the CIC to determine whether any such Performance Milestone will be
achieved. Any such Performance Milestone that is deemed achieved based on the Deal Price will be considered an Eligible Portion as of immediately prior to the completion of the CIC. 

ii.    Additional Conversions to an Eligible Portion. If a CIC occurs before the one (1) year anniversary of
your Start Date, then as of immediately prior to the completion of the CIC, one hundred percent (100%) of the portion of the PSU Award for which the Performance Milestone has not yet been met will become an Eligible Portion. If a CIC occurs on or
after the one (1) year anniversary of your Start Date but before the two (2) year anniversary of your Start Date, then fifty (50%) of the portion of the PSU Award that has not become an Eligible Portion (after application of section a.i.
above) will be considered an Eligible Portion as of immediately prior to the completion of the CIC. 
 iii.    Deal
Price. For purposes of this PSU Award, “Deal Price” means the amount (or value, as applicable, and as determined by the Board or its Compensation Committee, as applicable, in its sole discretion) of the consideration to be received by
the Company’s stockholders (and/or the Company, if applicable, for example in the case of a CIC due to the sale of a substantial portion of the Company’s assets) in the CIC. 

iv.    CIC Vesting Schedule. Any portion of the PSU Award that becomes an Eligible Portion in connection with the
CIC under sections a.i. and a.ii. above will be scheduled to vest as to one-third (1/3rd) of such Eligible Portion on each of the one (1), two (2), and
three (3) year anniversaries of the date of the CIC, subject to your continuing to provide services to the Company through the applicable vesting date and subject to the Acceleration Provisions. 

  

							
		 	A10 Networks, Inc.	 	3 West Plumeria Drive	 	T: 408. 325. 8668
		 	www.a10networks.com	 	San Jose, CA 95134	 	F: 408. 325. 8666

 

 
  

 b.    Forfeiture. If as of immediately prior to the CIC, any portion of the PSU
Award has not become an Eligible Portion or otherwise become vested, then such portion will be forfeited as of immediately prior to the CIC. Such forfeited portion will not be eligible for vesting acceleration under the Acceleration Provisions,
including without limitation under the circumstances described in the last paragraph of Section 3(b) of your Change in Control and Severance Agreement (the “Pre-CIC Termination”). In addition,
in a Pre-CIC Termination, if the Performance Period ends before the CIC, any portion of the PSU Award that has not become an Eligible Portion based on performance during the Performance Period will be
forfeited and will not be eligible for vesting acceleration under the Acceleration Provisions. 
 All of the terms and conditions of the PSU Award will be
subject to approval by the Board or its Compensation Committee and will be set forth in the award agreement governing the PSU Award, subject to the terms of the Plan. 

Annual Grants. On an annual basis beginning in the first grant cycle which occurs after the one (1) year anniversary of the Start
Date (i.e., at the Q1 2021 Board meeting), you will be eligible to receive annual equity award grants based on assessment by the Compensation Committee of the Board of relevant market comparables and such other factors as it may deem relevant, in
its sole discretion, with the present expectation that such grants based on performance would have a value between $2.0M and $2.5M. 
 Acceleration of
Vesting; Severance; Indemnification. Effective upon your Start Date, you will be entitled to become a party to the Change in Control and Severance Agreement (which provides for certain severance and acceleration of equity vesting rights) and
Indemnification Agreement (which provides for certain rights of indemnification, among other things), each in the forms included with this offer letter. 

Employee Stock Purchase Plan. You will be eligible to participate in the Company’s 2014 Employee Stock Purchase Plan, as amended
(the “ESPP”), in accordance with the terms thereof, whereby you will have the opportunity (but not the obligation) to enroll in the ESPP and purchase shares of the Company’s common stock at a discount from the market price. Currently,
there are two opportunities each year to enroll in the ESPP approximately each May and November. You will receive a notice about these opportunities from the stock administration office of the Company following your Start Date. 

Employee Benefits. You will be entitled to receive the Company’s employee benefits made available to other employees at your level to the
full extent of your eligibility. The effective date of medical, dental and vision insurance will be the Start Date. The Company reserves the right to terminate, change or otherwise modify, in its sole discretion at any time and for any reason, the
preceding benefits and terms of employment. 
 Confidentiality. As an employee of the Company, you will have access to certain
confidential information of the Company and you may, during the course of your employment, develop certain information or inventions that will be the property of the Company. To protect the interests of the Company, you will need to sign the
Company’s standard “Confidential Information and Invention Assignment Agreement” as a condition of your employment. We wish to impress upon you that we do not want you to, and we hereby direct you not to, bring with you any
confidential or proprietary material of any former employer or to violate any other obligations you may have to any former employer. During the period that you render services to the Company, you agree to not engage in any employment, business or
activity that is in any way competitive with the business or proposed business of the Company. You will disclose to the Company in writing any other gainful employment, business or activity that you are currently associated with or participate in
that competes with the Company. You will not assist any other person or organization in competing with the Company or in preparing to engage in competition with the business or proposed business of the Company. In accepting this offer, you expressly
represent and agree that (1) You have not and will not bring to the Company or use for the benefit of the Company any unauthorized third-party intellectual property, including but not limited to what they consider to be trade secrets
(“Former Employer Confidential Information”), (2) You have not and will not disclose to the Company any proprietary or otherwise confidential information of a prior employer’s business, (3) You will not communicate to anyone at
the Company any information that you acquired or learned during your employment that might in any respect be considered Former Employer Confidential Information, (3) prior to accepting this position at the Company you have not provided to
anyone at A10 any written Former Employer Confidential Information that in any way could be considered to be Former Employer Confidential Information, and (4) prior to your accepting this position at the Company, you have not conveyed anything
orally to anyone at A10 that might in any way be considered Former Employer Confidential Information. 

  

							
		 	A10 Networks, Inc.	 	3 West Plumeria Drive	 	T: 408. 325. 8668
		 	www.a10networks.com	 	San Jose, CA 95134	 	F: 408. 325. 8666

 

 
  

 Ethical Conduct. You will abide by the Company’s Code of Business Conduct and
Ethics, the Company’s Employee Handbook and other applicable policies pertaining to intellectual property and other matters. 
 No Breach of
Obligations to Prior Employers. You represent that your signing of this offer letter, agreement(s) concerning equity rights granted to you, if any, under the Plan (as defined above) and the Company’s Confidential Information And
Invention Assignment Agreement and your commencement of employment with the Company will not violate any agreement currently in place between yourself and current or past employers. 

Authorization to Work. Please note that because of employer regulations adopted in the Immigration Reform and Control Act of 1986, within
three (3) business days of starting your new position you will need to present documentation demonstrating that you have authorization to work in the United States. If you have questions about this requirement, which applies to U.S. citizens
and non-U.S. citizens alike, you may contact our Human Resources Department. 
 At-Will Employment. While we look forward to a long and profitable relationship, should you decide to accept our offer, you will be an at-will employee of the
Company, which means the employment relationship can be terminated by either of us for any reason, at any time, with or without prior notice and with or without cause. Any statements or representations to the contrary (and, indeed, any statements
contradicting any provision in this offer letter) should be regarded by you as ineffective. Further, your participation in any equity award or benefit program is not to be regarded as assuring you of continuing employment for any particular period
of time. Any modification or change in your at-will employment status may only occur by way of a written employment agreement signed by you and the Chairman of the Board. 

Background Check. The Company will undertake a background investigation and reference check in accordance with applicable law.
This investigation and reference check may include a consumer report, as defined by the Fair Credit Reporting Act (“FCRA”), 15 U.S.C. 1681a, and/or an investigative consumer report, as defined by FCRA, 15 U.S.C. 1681a, and California Civil
Code 1786.2(c). This investigation also may include a consumer credit report, as defined by California Civil Code 1785.3(c), which is being requested because this position is managerial, you will have access to confidential or proprietary
information of the type described in California Labor Code § 1024.5(a)(7), and other bases listed in California Labor Code § 1024.5. This offer is contingent upon a clearance of such a background investigation and/or reference check, and
upon your written authorization to obtain a consumer report, consumer credit report and/or investigative consumer report. This offer can be rescinded based upon data received in the verification. 

Contingent Offer. Your employment will be subject to your execution of the Company’s Confidential Information and Invention
Assignment Agreement relating to non-disclosure of confidential information and assignment of inventions to the Company. A copy is included with this offer letter. We also require successful completion of any
outstanding reference and background checks and presentation of documentation giving you the right to work in the United States as noted above.  

Entire Agreement. This offer, once accepted, constitutes the entire agreement between you and the Company with respect to the subject matter
hereof and supersedes all prior offers, negotiations and agreements, if any, whether written or oral, relating to such subject matter. You acknowledge that neither the Company nor its agents have made any promise, representation or warranty
whatsoever, either express or implied, written or oral, which is not contained in this offer letter for the purpose of inducing you to execute the offer letter, and you acknowledge that you have executed this offer letter in reliance only upon such
promises, representations and warranties as are contained herein. 
 Acceptance. This offer will remain open through November 15,
2019. If you decide to accept our offer, and I hope you will, please sign the enclosed copy of this offer letter in the space indicated and return it to me. Your signature will acknowledge that you have read and understood and agreed to the terms
and conditions of this offer letter and the attached documents, if any. 

  

							
		 	A10 Networks, Inc.	 	3 West Plumeria Drive	 	T: 408. 325. 8668
		 	www.a10networks.com	 	San Jose, CA 95134	 	F: 408. 325. 8666

 

 
  

 Dhrupad, we are very excited to enhance our Executive Team with your experience, capabilities and leadership.
We look forward to the opportunity to welcome you to the Company. 
  

	
	Sincerely,
	
	/s/ Lee Chen
	
	Lee Chen
	Chairman of the Board of Directors
	A10 Networks, Inc.

 I have read and understood this offer letter and hereby acknowledge, accept and agree to the terms as set forth above and
further acknowledge that no other commitments were made to me as part of my employment offer except as specifically set forth herein. 
  

	
	 /s/ Dhrupad Trivedi

	Dhrupad Trivedi
	
	Date: November 12, 2019
	
	Start Date: December 2, 2019

  

							
		 	A10 Networks, Inc.	 	3 West Plumeria Drive	 	T: 408. 325. 8668
		 	www.a10networks.com	 	San Jose, CA 95134	 	F: 408. 325. 8666EX-10.3

 Exhibit 10.3 

A10 NETWORKS, INC. 

FORM OF CHANGE IN CONTROL AND SEVERANCE AGREEMENT 

This Change in Control and Severance Agreement (the “Agreement”) is made and entered into by and between
Dhrupad Trivedi (“Executive”) and A10 Networks, Inc., a Delaware corporation (the “Company”), effective as of
                    , 2019 (the “Effective Date”). 

RECITALS 

A.    The Compensation Committee (the “Committee”) of the Board of Directors (the
“Board”) of the Company believes that it is in the best interests of the Company and its shareholders to provide Executive with an incentive for Executive’s employment and to motivate Executive to maximize the value of
the Company for the benefit of its shareholders. 
 B.    The Committee believes that it is imperative to provide
Executive with certain severance benefits upon Executive’s termination of employment under certain circumstances to help maintain Executive’s focus on his duties and responsibilities to the Company and to minimize the need of Executive to
consider alternative employment opportunities. These benefits will provide Executive with enhanced financial security, incentive and encouragement to remain with the Company. 

C.    Certain capitalized terms used in the Agreement are defined in Section 6 below. 

AGREEMENT 
 NOW,
THEREFORE, in consideration of the mutual covenants contained herein, the parties hereto agree as follows: 

1.    Term of Agreement. This Agreement will automatically terminate upon the date that all of the obligations of
the parties hereto with respect to this Agreement have been satisfied. 

2.    At-Will Employment. The Company and Executive acknowledge that
Executive’s employment is and will continue to be at-will, as defined under applicable law. As an at-will employee, either the Company or Executive may terminate
the employment relationship at any time, with or without Cause. Upon any termination of employment, the Company will pay Executive all accrued but unpaid vacation, expense reimbursements, wages and other benefits due to Executive under any
Company-provided plans, policies and arrangements (“Accrued Compensation”). 

3.    Severance Benefits. 

(a)    Termination Without Cause or Resignation for Good Reason Other Than During the Change in Control Period. If
the Company terminates Executive’s employment with the Company without Cause and other than due to death or Disability, or Executive resigns from his or her employment for Good Reason, and, in each case, such termination does not occur
during the Change in Control Period, then subject to Section 4 and in addition to Accrued Compensation, Executive will receive the following: 

(i)    Continuing Severance Payments. Executive will be paid continuing payments of severance pay at a rate equal
to Executive’s base salary rate, as in effect immediately prior to Executive’s termination of employment, for a period of twelve (12) months. 

 (ii)    Continuation Coverage. If Executive elects continuation
coverage pursuant to the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”) within the time period prescribed pursuant to COBRA for Executive and Executive’s eligible dependents, then the
Company will reimburse Executive for the COBRA premiums for such coverage (at the coverage levels in effect immediately prior to Executive’s termination) until the earlier of (A) a period of twelve (12) months from the date of
termination or (B) the date upon which Executive and/or Executive’s eligible dependents become covered under similar plans. Notwithstanding the foregoing, if the Company determines in its sole discretion that it cannot provide the COBRA
reimbursement benefits without potentially violating, or being subject to an excise tax under, applicable law (including, without limitation, Section 2716 of the Public Health Service Act), then in lieu thereof, the Company will provide to
Executive a taxable monthly payment, payable on the last day of a given month (except as provided by the following sentence), in an amount equal to the monthly COBRA premium that Executive would be required to pay to continue Executive’s group
health coverage in effect on the termination of employment date (which amount will be based on the premium for the first month of COBRA coverage), which payments will be made regardless of whether Executive elects COBRA continuation coverage and
will commence on the first month following Executive’s termination of employment and will end on the earlier of (x) the date upon which Executive obtains other employment or (y) the date the Company has paid an amount equal to twelve
(12) payments. For the avoidance of doubt, any taxable payments in lieu of COBRA reimbursements may be used for any purpose, including, but not limited to continuation coverage under COBRA, and will be subject to all applicable tax
withholdings. 
 (b)    Termination Without Cause or Resignation for Good Reason During the Change in Control
Period. If the Company terminates Executive’s employment with the Company without Cause and other than due to death or Disability, or if Executive resigns from his or her employment for Good Reason, and, in each case, such termination
occurs during the Change in Control Period, then subject to Section 4 and the completion of the Change in Control, and in addition to Accrued Compensation, Executive will receive the following: 

(i)    Severance Payment. Executive will receive a lump-sum payment equal
to twelve (12) months of Executive’s annual base salary as in effect immediately prior to Executive’s termination date or, if greater, at the level in effect immediately prior to the Change in Control (as applicable). 

(ii)    Bonus Payment. Executive will receive a lump-sum payment equal to
one hundred percent (100%) of the greater of (A) Executive’s target bonus as in effect for the Company’s fiscal year in which the Change in Control occurs (as applicable), or (B) Executive’s target bonus as in effect
for the Company’s (or surviving company’s, as applicable) fiscal year in which Executive’s termination of employment occurs. 

(iii)    Continuation Coverage. If Executive elects continuation coverage pursuant to COBRA within the time period
prescribed pursuant to COBRA for Executive and Executive’s eligible dependents, then the Company will reimburse Executive for the COBRA premiums for such coverage (at the coverage levels in effect immediately prior to Executive’s
termination) until the earlier of (A) a period of twelve (12) months from the date of termination or (B) the date upon which Executive and/or Executive’s eligible dependents become covered under similar plans.
Notwithstanding the foregoing, if the Company determines in its sole discretion that it cannot provide the COBRA reimbursement benefits without potentially violating, or being subject to an excise tax under, applicable law (including, without
limitation, Section 2716 of the Public Health Service Act), then in lieu thereof, the Company will provide to Executive a taxable monthly payment, payable on the last day of a given month (except as provided by the following sentence), in an
amount equal to the monthly COBRA premium that Executive would be required to pay to continue Executive’s group health coverage in effect on the termination of employment date (which amount will be based on the premium for the first month of
COBRA 

  
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coverage), which payments will be made regardless of whether Executive elects COBRA continuation coverage and will commence on the first month following Executive’s termination of employment
and will end on the earlier of (x) the date upon which Executive obtains other employment or (y) the date the Company has paid an amount equal to twelve (12) payments. For the avoidance of doubt, any taxable payments in lieu of COBRA
reimbursements may be used for any purpose, including, but not limited to, continuation coverage under COBRA, and will be subject to all applicable tax withholdings. 

(iv)    Accelerated Vesting of Equity Awards. One hundred percent (100%) of Executive’s then-outstanding
and unvested Equity Awards (or portions thereof, as applicable) that are subject to continued service-based vesting criteria, and that no longer are or never were subject to the achievement of
performance-based or other similar vesting criteria, will become vested in full. With respect to any then-outstanding and unvested Equity Award (or portion thereof, as applicable) that is subject to the
achievement of any performance-based or other similar vesting criteria, unless provided otherwise in Executive’s Equity Award agreement or other written agreement between the Company and Executive governing the terms of the Equity Award, the
Equity Award (or applicable portion thereof) will vest as to one hundred percent (100%) of the amount of the Equity Award (or applicable portion thereof) assuming the relevant performance criteria had been achieved at target levels for the
relevant performance period(s). 
 In the event that Executive’s employment with the Company terminates in accordance with this
Section 3(b) and such termination occurs prior to a Change in Control, then unless provided otherwise in the Equity Award agreement or other written agreement between the Company and Executive governing the terms of the Equity Award,
(A) the Equity Award will remain outstanding until immediately prior to the Change in Control (provided that in no event will an Equity Award remain outstanding after the expiration of the Equity Award’s maximum term to expiration)
notwithstanding that Executive’s status as a service provider to the Company has terminated, (B) any vesting acceleration under this subsection (iv) will be applied to Executive’s Equity Awards outstanding as of immediately prior
to the Change in Control, and (C) any options and stock appreciation rights will remain outstanding and exercisable in accordance with, and for the post-termination exercisability period set forth in, the applicable Equity Award agreement as if
Executive’s status as a service provider of the Company had ceased as of the Change in Control (provided that in no event will an Equity Award remain outstanding after the expiration of the Equity Award’s maximum term to expiration and,
for the avoidance of doubt, subject to any earlier termination in accordance with the terms and conditions of the Company’s plan, including if applicable, its termination in connection with the Change in Control). 

(c)    Voluntary Resignation; Termination for Cause; Termination of Employment Other than During Change in Control
Period. If Executive’s employment with the Company terminates (i) voluntarily by Executive (other than for Good Reason) or (ii) for Cause by the Company, then Executive will not be entitled to receive severance or other
benefits except for the Accrued Compensation and those severance or other benefits (if any) as may then be established under the Company’s then-existing written severance and benefits plans and
practices or pursuant to other written agreements with the Company. 
 (d)    Disability; Death. If the Company
terminates Executive’s employment as a result of Executive’s Disability, or Executive’s employment terminates due to Executive’s death, Executive will not be entitled to receive any other severance or other benefits, except for
the Accrued Compensation and those severance or other benefits (if any) as may then be established under the Company’s then-existing written severance and benefits plans and practices or pursuant to other written agreements with the
Company. 
 (e)    Exclusive Remedy. In the event of a termination of Executive’s employment as set forth in
Section 3(a) or 3(b) of this Agreement, the provisions of Section 3 are intended to be and are exclusive and in lieu of and supersede any other rights or remedies to which Executive or the Company

  
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otherwise may be entitled, whether at law, tort or contract, in equity, or under this Agreement (other than the payment of accrued but unpaid wages, as required by law, and any unreimbursed
reimbursable expenses). Executive will be entitled to no benefits, compensation or other payments or rights upon a termination of employment other than those benefits expressly set forth in Section 3 of this Agreement. 

4.    Conditions to Receipt of Severance. 

(a)    Release of Claims Agreement. The receipt of any severance payments or benefits (other than any Accrued
Compensation) pursuant to this Agreement (the “Severance Benefits”) is subject to Executive signing and not revoking the Company’s then-standard separation agreement and release of claims (the
“Release”), which must become effective and irrevocable no later than the sixtieth (60th) day following Executive’s termination of employment (the “Release Deadline Date”). If the Release
does not become effective and irrevocable by the Release Deadline Date, Executive will forfeit any right to the Severance Benefits. In no event will Severance Benefits be paid or provided, or in the case of installments, commence, until the
Release actually becomes effective and irrevocable. 
 (b)    Payment Timing Following Release. 

(i)    General Payment Timing. If the Release becomes effective and irrevocable by the Release Deadline Date, then
subject to Section 4(d) below, Severance Benefits under this Agreement will be paid, or in the case of installments, will commence, on the first regularly scheduled payroll date that occurs after the Release Deadline Date (the
“Severance Start Date”), but in no event later than March 15th of the calendar year following the calendar year in which Executive’s employment termination occurs, and any Severance Benefits otherwise payable to
Executive during the period immediately following Executive’s termination of employment with the Company through the Severance Start Date will be paid in a lump sum to Executive on the Severance Start Date, with any remaining payments to be
made as provided in this Agreement. 
 (ii)    Overlapping Termination. For purposes of clarity, subject to
Section 4(d) below, if (A) prior to a Change in Control, Executive incurs a termination of employment that qualifies Executive for Severance Benefits under Section 3(a), (B) the Release becomes effective and irrevocable by the
Release Deadline Date, and (C) subsequent to Executive’s employment termination, a Change in Control occurs that qualifies Executive for Severance Benefits under Section 3(b) (the “Overlapping Termination”),
then (1) any Severance Benefits under Section 3(a) will cease upon the Change in Control, and (2) Executive will be entitled to the Severance Benefits under Section 3(b) as follows: (I) a lump sum salary severance payment in
the amount calculated and as described in Section 3(b)(i), but less any amount previously paid to Executive under Section 3(a)(i), (II) a lump sum bonus severance payment in the amount set forth and as described in
Section 3(b)(ii), (III) the continued COBRA reimbursements for the number of months set forth and as described in Section 3(b)(iii), but less the number of months previously paid to Executive under Section 3(a)(ii) (or, if
applicable, a taxable, lump sum cash payment of the amount calculated and as described in Section 3(b)(iii), less any taxable, lump sum cash payment previously paid under Section 3(a)(ii)), and (IV) the vesting acceleration as
set forth under Section 3(b)(iv). Further, in the event of an Overlapping Termination, the additional Severance Benefits payable under Section 3(b) as specified in the immediately preceding sentence will be paid, or in the case of
installments, will commence, on the later of the Change in Control or the Severance Start Date (such later date, the “Later Start Date”), and any Severance Benefits otherwise payable to Executive during the period immediately
following Executive’s termination of employment with the Company through the Later Start Date will be paid in a lump sum to Executive on the Later Start Date. 

  
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 (c)    Confidential Information and Invention Assignment
Agreements. Executive’s receipt of any payments or benefits under Section 3 (other than any Accrued Compensation) will be subject to Executive continuing to comply with the terms of the any confidential information and invention
assignment agreement executed by Executive in favor of the Company and the provisions of this Agreement. 

(d)    Section 409A. 

(i)    Notwithstanding anything to the contrary in this Agreement, no severance pay or benefits to be paid or provided to
Executive, if any, pursuant to this Agreement that, when considered together with any other severance payments or separation benefits, are considered deferred compensation under Section 409A of the Code, and the final regulations and any
guidance promulgated thereunder (“Section 409A”) (together, the “Deferred Payments”) will be paid or otherwise provided until Executive has a “separation
from service” within the meaning of Section 409A. Similarly, no severance payable to Executive, if any, pursuant to this Agreement that otherwise would be exempt from Section 409A pursuant to Treasury Regulation Section 1.409A-1(b)(9) will be payable until Executive has a “separation from service” within the meaning of Section 409A. 

(ii)    It is intended that none of the severance payments under this Agreement will constitute Deferred Payments but
rather will be exempt from Section 409A as a payment that would fall within the “short-term deferral period” as described in Section 4(d)(iv) below or resulting from an involuntary separation from service as described in
Section 4(d)(v) below. In no event will Executive have discretion to determine the taxable year of payment of any Deferred Payment. 

(iii)    Notwithstanding anything to the contrary in this Agreement, if Executive is a “specified employee”
within the meaning of Section 409A at the time of Executive’s separation from service (other than due to death), then the Deferred Payments, if any, that are payable within the first six (6) months following Executive’s
separation from service, will become payable on the first payroll date that occurs on or after the date six (6) months and one (1) day following the date of Executive’s separation from service. All subsequent Deferred Payments, if
any, will be payable in accordance with the payment schedule applicable to each payment or benefit. Notwithstanding anything herein to the contrary, in the event of Executive’s death following Executive’s separation from service, but
before the six (6) month anniversary of the separation from service, then any payments delayed in accordance with this paragraph will be payable in a lump sum as soon as administratively practicable after the date of Executive’s death and
all other Deferred Payments will be payable in accordance with the payment schedule applicable to each payment or benefit. Each payment and benefit payable under this Agreement is intended to constitute a separate payment under Section 1.409A-2(b)(2) of the Treasury Regulations. 
 (iv)    Any amount
paid under this Agreement that satisfies the requirements of the “short-term deferral” rule set forth in Section 1.409A-1(b)(4) of the Treasury Regulations will not constitute Deferred
Payments for purposes of clause (i) above. 
 (v)    Any amount paid under this Agreement that qualifies as a
payment made as a result of an involuntary separation from service pursuant to Section 1.409A-1(b)(9)(iii) of the Treasury Regulations that does not exceed the Section 409A Limit (as defined
below) will not constitute Deferred Payments for purposes of clause (i) above. 
 (vi)    The foregoing
provisions are intended to comply with or be exempt from the requirements of Section 409A so that none of the severance payments and benefits to be provided hereunder will be subject to the additional tax imposed under Section 409A, and
any ambiguities herein will be interpreted to so comply or be exempt. For purposes of this Agreement, to the extent required to be exempt from or comply with Section 409A, references to Executive’s “termination of employment” or
similar phrases will be references to Executive’s “separation from service” within the meaning of 

  
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Section 409A. The Company and Executive agree to work together in good faith to consider amendments to this Agreement and to take such reasonable actions which are necessary, appropriate or
desirable to avoid imposition of any additional tax or income recognition before actual payment to Executive under Section 409A. In no event will the Company reimburse Executive for any taxes that may be imposed on Executive as result of
Section 409A. 
 5.    Limitation on Payments. In the event that the payments and benefits provided for in
this Agreement or other payments and benefits payable or provided to Executive (i) constitute “parachute payments” within the meaning of Section 280G of the Code and (ii) but for this Section 5, would be
subject to the excise tax imposed by Section 4999 of the Code, then Executive’s payments and benefits under this Agreement or other payments or benefits (the “280G Amounts”) will be either: 

(i)    delivered in full, or 

(ii)    delivered as to such lesser extent which would result in no portion of such benefits being subject to excise tax
under Section 4999 of the Code, 
 whichever of the foregoing amounts, taking into account the applicable federal, state and local income taxes and the
excise tax imposed by Section 4999, results in the receipt by Executive on an after-tax basis, of the greatest amount of 280G Amounts, notwithstanding that all or some portion of the 280G Amounts may
be taxable under Section 4999 of the Code. 
 (a)    Reduction Order. In the event that a reduction of 280G
Amounts is being made in accordance with this Section 5, the reduction will occur, with respect to the 280G Amounts considered parachute payments within the meaning of Section 280G of the Code, in the following order: 

(i)    reduction of cash payments in reverse chronological order (that is, the cash payment owed on the latest date
following the occurrence of the event triggering the excise tax will be the first cash payment to be reduced); 

(ii)    cancellation of equity awards that were granted “contingent on a change in ownership or control” within
the meaning of Code Section 280G in the reverse order of date of grant of the awards (that is, the most recently granted equity awards will be cancelled first); 

(iii)    reduction of the accelerated vesting of equity awards in the reverse order of date of grant of the awards (that
is, the vesting of the most recently granted equity awards will be cancelled first); and 
 (iv)    reduction of
employee benefits in reverse chronological order (that is, the benefit owed on the latest date following the occurrence of the event triggering the excise tax will be the first benefit to be reduced). 

In no event will Executive have any discretion with respect to the ordering of payments. 

(b)    Unless the Company and Executive otherwise agree in writing, any determination required under this Section 5
will be made in writing by a nationally recognized accounting or valuation firm (the “Firm”) selected by the Company, whose determination will be conclusive and binding upon Executive and the Company for all purposes. For
purposes of making the calculations required by this Section 5, the Firm may make reasonable assumptions and approximations concerning applicable taxes and may rely on reasonable, good faith interpretations concerning the application of
Sections 280G and 4999 of the Code. The Company and Executive will furnish to the Firm such information and documents as the 

  
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Firm may reasonably request in order to make a determination under this Section. The Company will bear all costs and make all payments for the Firm’s services relating to any calculations
contemplated by this Section 5. 
 6.    Definition of Terms. The following terms referred to in this
Agreement will have the following meanings: 
 (a)    Cause. “Cause” will mean: 

(i)    Executive’s repeated failure to perform his or her duties and responsibilities to the Company, or abide, in
all material respects, with the policies of the Company after written notice from the Board or an officer of the Company describing in reasonable detail Executive’s failure to perform such duties or responsibilities or abide by such policies;

 (ii)    Executive’s engagement in illegal conduct that was or is injurious in any material respect to the
Company; 
 (iii)    Executive’s material violation or material breach of his or her Employment, Confidential
Information and Invention Assignment with the Company that is not cured within twenty (20) days of written notice thereof or is incapable of cure; or 

(iv)    Executive’s conviction of, or entry of a plea of guilty or nolo contendere to, a felony (other than
motor vehicle offenses the effect of which do not materially impair Executive’s performance of his employment duties) or any crime involving fraud, embezzlement or other offense which involves moral turpitude, and/or committing any act of
embezzlement, dishonesty or fraud against, or the misappropriation of material property belonging to, the Company. 
 The foregoing definition does not in
any way limit the Company’s ability to terminate Executive’s employment relationship at any time as provided in Section 2 above, and the term “Company” will be interpreted to include any subsidiary, parent, affiliate or
successor thereto, if applicable. 
 (b)    Change in Control. “Change in Control” means
the occurrence of any of the following events: 
 (i)    A change in the ownership of the Company which occurs on the
date that any one person, or more than one person acting as a group within the meaning of Section 13(d) of the Exchange Act (“Person”), acquires ownership of the stock of the Company that, together with the stock already
held by such Person, constitutes more than fifty percent (50%) of the total voting power of the stock of the Company; or 

(ii)    A change in the effective control of the Company which occurs on the date that a majority of members of the Board
is replaced during any twelve (12) month period by Directors whose appointment or election is not endorsed by a majority of the members of the Board prior to the date of the appointment or election; or 

(iii)    A change in the ownership of a substantial portion of the Company’s assets which occurs on the date that
any Person acquires (or has acquired during the twelve (12) month period ending on the date of the most recent acquisition by such person or persons) assets from the Company that have a total gross fair market value equal to or more than
fifty percent (50%) of the total gross fair market value of all of the assets of the Company immediately prior to such acquisition or acquisitions; provided, however, that for purposes of this subsection (iii), the following will not constitute
a change in the 

  
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ownership of a substantial portion of the Company’s assets: (A) a transfer to an entity that is controlled by the Company’s stockholders immediately after the transfer, or
(B) a transfer of assets by the Company to an entity, fifty percent (50%) or more of the total value or voting power of which is owned, directly or indirectly, by the Company. For purposes of this subsection (iii), gross fair market
value means the value of the assets of the Company, or the value of the assets being disposed of, determined without regard to any liabilities associated with such assets. 

For the avoidance of doubt, a transaction will not constitute a Change in Control if: (i) its sole purpose is to change the state of the
Company’s incorporation, or (ii) its sole purpose is to create a holding company that will be owned in substantially the same proportions by the persons who held the Company’s securities immediately before such transaction.
Notwithstanding the foregoing, a transaction will not be deemed a Change in Control unless the transaction qualifies as a change in control event within the meaning of Section 409A. 

(c)    Change in Control Period. “Change in Control Period” will mean, subject to the
completion of the Change in Control, the period beginning on the date on which an agreement to enter into such Change in Control has been signed and executed by the relevant parties, and ending on the date twelve (12) months following such
Change in Control. 
 (d)    Code. “Code” will mean the Internal Revenue Code of 1986, as
amended. 
 (e)    Disability. “Disability” will mean Executive’s inability to
perform the essential functions of his or her job due to a Permanent and Total Disability as defined under Section 22(e)(3) of the Code. 

(f)    Equity Awards. “Equity Awards” will mean Executive’s outstanding stock options,
stock appreciation rights, restricted stock, restricted stock units, performance shares, performance share units and any other Company equity compensation awards. 

(g)    Good Reason. “Good Reason” will mean Executive’s voluntary termination of
employment with the Company within ninety (90) days following the expiration of any Company cure period (discussed below) following one or more of the following occurring without Executive’s prior written consent: 

(i)    a material reduction by the Company in Executive’s gross base salary, as in effect immediately prior to such
reduction other than in connection with a similar reduction for all similarly-situated employees of the Company; 

(ii)    a material reduction by the Company in Executive’s authority, duties, or responsibilities; or 

(iii)    relocation of Executive’s principal place of work to a location that is more than fifty (50) miles
from Executive’s current principal work site for the Company; 
 Executive may not resign for Good Reason without first providing the Company with
written notice within sixty (60) days of the initial existence of the condition that Executive believes constitutes Good Reason specifically identifying the acts or omissions constituting the grounds for Good Reason and a reasonable cure period
of not less than thirty (30) days following the date of such notice, during which such grounds must not have been cured. 

  
 - 8 - 

 For purposes of the “Good Reason” definition, the term “Company” will be interpreted to
include any subsidiary, parent, affiliate or successor thereto, if applicable. 
 (h)    Section 409A Limit.
“Section 409A Limit” will mean two (2) times the lesser of: (i) Executive’s annualized compensation based upon the annual rate of pay paid to Executive during Executive’s
taxable year preceding Executive’s taxable year of Executive’s termination of employment as determined under, and with such adjustments as are set forth in, Treasury
Regulation 1.409A-1(b)(9)(iii)(A)(1) and any Internal Revenue Service guidance issued with respect thereto; or (ii) the maximum amount that may be taken into account under a qualified plan
pursuant to Section 401(a)(17) of the Code for the year in which Executive’s employment is terminated. 
  

	 	7.	 Successors. 

(a)    The Company’s Successors. Any successor to the Company (whether direct or indirect and
whether by purchase, merger, consolidation, liquidation or otherwise) to all or substantially all of the Company’s business and/or assets will assume the obligations under this Agreement and agree expressly to perform the obligations under
this Agreement in the same manner and to the same extent as the Company would be required to perform such obligations in the absence of a succession. For all purposes under this Agreement, the term “Company” will include any successor to
the Company’s business and/or assets which executes and delivers the assumption agreement described in this Section 7(a) or which becomes bound by the terms of this Agreement by operation of law. 

(b)    Executive’s Successors. The terms of this Agreement and all rights of Executive hereunder will inure to
the benefit of, and be enforceable by, Executive’s personal or legal representatives, executors, administrators, successors, heirs, distributees, devisees and legatees. 
  

	 	8.	 Notice. 

(a)    General. Notices and all other communications contemplated by this Agreement will be in writing and will be
deemed to have been duly given when personally delivered or when mailed by U.S. registered or certified mail, return receipt requested and postage prepaid. Mailed notices to Executive will be addressed to Executive at the home address which
Executive most recently communicated to the Company in writing. In the case of the Company, mailed notices will be addressed to its corporate headquarters, and all notices will be directed to the attention of its Secretary. 

(b)    Notice of Termination. Any termination by the Company for Cause or by Executive for Good Reason will be
communicated by a notice of termination to the other party hereto given in accordance with Section 8(a) of this Agreement. Such notice will indicate the specific termination provision in this Agreement relied upon, will set forth in reasonable
detail the facts and circumstances claimed to provide a basis for termination under the provision so indicated, and will specify the termination date (which will be not more than thirty (30) days after the giving of such notice). 

9.    Resignation. Upon the termination of Executive’s employment for any reason, Executive will be deemed to
have resigned from all officer and/or director positions held at the Company and its affiliates voluntarily, without any further required action by Executive, as of the end of Executive’s employment and Executive, at the Board’s
request, will execute any documents reasonably necessary to reflect Executive’s resignation. 

  
 - 9 - 

	 	10.	 Miscellaneous Provisions. 

(a)    No Duty to Mitigate. Executive will not be required to mitigate the amount of any payment contemplated by
this Agreement, nor will any such payment be reduced by any earnings that Executive may receive from any other source. 

(b)    Waiver. No provision of this Agreement will be modified, waived or discharged unless the modification,
waiver or discharge is agreed to in writing and signed by Executive and by an authorized officer of the Company (other than Executive). No waiver by either party of any breach of, or of compliance with, any condition or provision of this Agreement
by the other party will be considered a waiver of any other condition or provision or of the same condition or provision at another time. 

(c)    Headings. All captions and section headings used in this Agreement are for convenient reference only and do
not form a part of this Agreement. 
 (d)    Entire Agreement. This Agreement constitutes the entire agreement of
the parties hereto and supersedes in their entirety all prior representations, understandings, undertakings or agreements (whether oral or written and whether expressed or implied) of the parties, including but not limited to the Offer Letter
entered into between you and the Company dated                     , 2019, and any accelerated vesting and post-termination exercisability provisions
set forth in your equity award agreements (to the extent modified by this Agreement), in each case with respect to the subject matter hereof. No waiver, alteration, or modification of any of the provisions of this Agreement will be binding unless in
writing and signed by duly authorized representatives of the parties hereto and which specifically mention this Agreement. 

(e)    Choice of Law. The validity, interpretation, construction and performance of this Agreement will be governed
by the laws of the State of California (with the exception of its conflict of laws provisions). Any claims or legal actions by one party against the other arising out of the relationship between the parties contemplated herein (whether or not
arising under this Agreement) will be commenced or maintained in any state or federal court located in Santa Clara County, California, and Executive and the Company hereby submit to the jurisdiction and venue of any such court. 

(f)    Severability. The invalidity or unenforceability of any provision or provisions of this Agreement will not
affect the validity or enforceability of any other provision hereof, which will remain in full force and effect. 

(g)    Withholding. All payments made pursuant to this Agreement will be subject to withholding of applicable
income, employment and other taxes. 
 (h)    Counterparts. This Agreement may be executed in counterparts, each
of which will be deemed an original, but all of which together will constitute one and the same instrument. 

  
 - 10 - 

 IN WITNESS WHEREOF, each of the parties has executed this Agreement, in the case of the
Company by its duly authorized officer, as of the day and year first set forth above. 
  

									
	COMPANY	 		 		 	A10 NETWORKS, INC.
					
		 		 		 	By:	 	  

					
		 		 		 	Title:	 	  

				
	EXECUTIVE	 		 		 	Dhrupad Trivedi
				
		 		 		 	  

		 		 		 	(Signature)
					
		 		 		 	Date:	 	  

  
 - 11 -

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