NAI-5001811864v11   EMPLOYMENT TRANSITION AGREEMENT  This Employment Transition Agreement (the “Agreement”) is entered into as of July 31,  2025 (hereinafter “Effective Date”), by and between Five9, Inc., a Delaware corporation  (hereinafter, the “Company”), and Michael Burkland (hereinafter “Executive”). The parties  agree that this Agreement, including Appendix A and Appendix B attached hereto,  constitutes the complete, final and exclusive embodiment of the entire agreement between  the Company, affiliates of the Company and Executive with regard to the subject matter  hereof.  WITNESSETH:  WHEREAS, Executive is employed by the Company as its Chief Executive Officer  (the “CEO”) pursuant to the Offer Letter by and between the Company and Executive,  dated as of October 10, 2022 (the “Offer Letter”).   WHEREAS, Executive intends to voluntarily retire from the position of Chief  Executive Officer of the Company;   WHEREAS, in connection with the Executive’s upcoming voluntary retirement,  the Board of Directors of the Company (the “Board”) will conduct a search for a successor  Chief Executive Officer of the Company (a “Successor CEO”);   WHEREAS, to ensure a smooth and orderly transition of Executive’s duties to the  Successor CEO, the Company desires to (i) continue to employ Executive as CEO until  such Successor CEO is appointed, and (ii) to employ Executive as Executive Chairman of  the Board of the Company (“Executive Chairman”) for a Transition Period (as defined  below) thereafter;  WHEREAS, Executive desires to provide the Company with the full benefit of his  services as an employee through the Transition Period and as a director of the Board during  the Board Period (as defined below); and  WHEREAS, the Company and Executive desire to terminate the Offer Letter  effective as of the Effective Date, and formally set forth the terms and conditions of  (i) Executive’s continued service as CEO until the Successor CEO is appointed, (ii) Executive’s service as Executive Chairman, and (iii) Executive’s service as a director of the Board. NOW, THEREFORE, in consideration of mutual promises and agreements herein  contained, Company and Executive agree as follows:  Exhibit 10.1 
 
 
  EXECUTIVE:                          (initial) - PAGE 2 - COMPANY:                         (initial)    1. CEO PERIOD:      (a) Services: After the Effective Date, Executive will continue to serve as the  CEO of the Company until the date on which a Successor CEO is appointed  by the Board and commences serving in such role (such date, the “CEO  Transition Date”) unless Executive’s employment is terminated earlier due  to (i) a voluntary resignation by Executive for any reason or (ii) a  termination by the Company either for or without “Cause” as such term is  defined in the Five9, Inc. 2014 Equity Incentive Plan (the “Equity Plan”).  The period beginning on the Effective Date and ending on the date  Executive ceases to be employed by the Company as the CEO is referred to  herein as the “CEO Period.” During the CEO Period, Executive will  continue with Executive’s current duties as CEO, and will continue to serve  as Chairman of the Board (“Chairman”). In addition, Executive shall also  help prepare the Successor CEO to serve effectively in such role on and  after the CEO Transition Date (or, if earlier, through such date that  Executive no longer provides services to the Company as an employee or  director).     (b) Compensation and Benefits: While Executive is employed by the Company  during the CEO Period, Executive will continue to be paid his base salary  of $585,000 per year. If the CEO Transition Date occurs in 2025, Executive  will be eligible to earn a pro-rata portion of Executive’s annual bonus for  2025 under the Company’s Bonus Program for the portion of 2025 that  occurs prior to the CEO Transition Date, calculated based on actual  performance and paid when the 2025 annual bonus is paid to the Company’s  other executives. If the CEO Transition Date has not occurred by the grant  date of the 2026 annual equity incentive awards to the Company’s  executives, the Compensation Committee of the Board may, in its sole  discretion, approve such equity incentive awards for Executive in the  amount and on terms it deems appropriate taking into account the status of  the search for the Successor CEO, the projected time until the CEO  Transition Date, and other factors. While Executive is employed by the  Company during the CEO Period, Executive will (i) continue to be eligible  to participate in the Company-sponsored vacation policies and employee  benefits and will be a member of any employee benefit plans that the  Company may establish that are generally available to other executives of  the Company (the “Benefits”) and (ii) be eligible for the continued health  plan coverage described in Section 4 and the continued vesting of  Executive’s then outstanding equity incentive awards in accordance with  Section 5 of this Agreement.     (c) Executive acknowledges and agrees that the terms of this Agreement related  to his transition from the role of CEO and such transition do not constitute  “Constructive Termination” or an “Involuntary Termination without  Cause” under the Company’s 2019 Key Employee Severance Benefit Plan  
 
 
  EXECUTIVE:                          (initial) - PAGE 3 - COMPANY:                         (initial)    (the “KESP”) and that during the CEO Period, Executive shall remain an  “at-will” employee.     2. TRANSITION PERIOD:     (a) Services: If Executive remains employed as CEO as of the CEO Transition  Date, then Executive will then cease to be employed as the CEO on the CEO  Transition Date. Executive will also cease, effective as of the CEO  Transition Date (or, if earlier, the date that Executive no longer provides  services to the Company as CEO), to be (i) an officer, director or employee  of any subsidiary of the Company, (ii) a member of any sub-committee of  any committee of the Board, and (iii) in any position with any plan, trust or  other entity affiliated with the Company, except as set forth in this  Section 2(a). If Executive signs the release agreement attached as  Appendix A hereto on the CEO Transition Date and remains employed as  the Company’s CEO through such date, Executive will continue to be  employed by the Company as Executive Chairman to assist the Successor  CEO with transition matters and to provide other advisory services to the  Board and the Successor CEO in the areas of Company culture, innovation,  strategic initiatives, and other initiatives as determined by the Successor  CEO or the Board. Executive’s employment as Executive Chairman shall  begin on the CEO Transition Date (provided Executive remains employed  as the Company’s CEO through such date and signs the release agreement  attached as Appendix A hereto on the CEO Transition Date) and extend for  a period of six (6) months thereafter; provided that Executive’s employment  as Executive Chairman during the Transition Period will automatically  terminate upon the earliest to occur of (1) the end of such six-month period,  (2) a voluntary termination of Executive’s employment by Executive for  any reason, (3) a termination of Executive’s employment by the Company  for or without Cause or (4) the date Executive ceases to be a director on the  Board for any reason (the date of such earliest event, the “Retirement  Date”). The period beginning on the CEO Transition Date and ending on  the Retirement Date is referred to herein as the “Transition Period.”  Executive shall be an “at-will” employee while serving as Executive  Chairman.    (b) Compensation and Benefits: While Executive is employed by the Company  during the Transition Period, Executive will be paid a salary at an annual  rate of $70,000 (or, if greater, at the applicable minimum wage in effect in  the state of California), prorated for the portion of any year in which  Executive serves as Executive Chairman, in accordance with the  Company’s standard payroll practice. While Executive is employed by the  Company during the Transition Period, Executive will (i) continue to be  eligible for the Benefits and (ii) be eligible for the continued health plan  coverage described in Section 4 and the continued vesting of Executive’s  outstanding equity incentive awards as of the CEO Transition Date (the  
 
 
  EXECUTIVE:                          (initial) - PAGE 4 - COMPANY:                         (initial)    “CEO Equity Awards”) in accordance with Section 5 of this Agreement.  Notwithstanding the foregoing, effective as of the CEO Transition Date,  Executive hereby waives his right to all benefits and severance under the  KESP effective as of the CEO Transition Date and will no longer be a  participant in the KESP after the CEO Transition Date. Unless approved by  the Board (or as otherwise set forth in this Agreement), Executive shall not  receive any additional compensation or benefits for his service on the Board  or as Executive Chairman, as applicable, including under the Company’s  Non-Employee Director Compensation Policy.    3. CONTINUED BOARD SERVICE:    (a) Services: Executive shall be deemed to resign from the Board as of the date  of Executive’s termination of employment with the Company for any  reason; provided, however, that if (i) Executive remains employed through  the 6-month anniversary of the CEO Transition Date, (ii) such 6-month  anniversary occurs during Executive’s current term on the Board (which  ends at the Company’s annual meeting of stockholders, subject to his earlier  death, resignation, or removal) and (iii) Executive signs the release  agreement attached as Appendix A hereto on the Retirement Date, then  Executive shall continue to serve as a director on the Board through his  current term of office (which ends at the Company’s annual meeting of  stockholders in 2026), subject to his earlier death, resignation or removal,  and may, in the sole discretion of the Board, continue to serve as Chairman  or as Executive Chairman (either as a consultant or employee, in the Board’s  discretion) after the Retirement Date. The period after the Retirement Date  that Executive serves as a director on the Board is referred to herein as the  “Board Period.”      (b) Compensation and Benefits: During the Board Period, Executive will be  eligible for (i) the continued health plan coverage described in Section 4  and (ii) the continued vesting of the CEO Equity Awards pursuant to  Section 5 below. Unless approved by the Board or the Compensation  Committee of the Board (or as otherwise set forth in this Agreement),  Executive shall not receive any additional compensation for his service on  the Board (or as Chairman or Executive Chairman, as applicable), including  under the Company’s Non-Employee Director Compensation Policy,  during the period that Executive continues to vest in the CEO Equity  Awards (the “Continued Vesting Period”). If Executive continues to serve  as a director on the Board after the Continued Vesting Period, Executive  will be paid such annual cash compensation and equity compensation as  provided pursuant to the Company’s  Non-Employee Director  Compensation Policy as then in effect.     
 
 
  EXECUTIVE:                          (initial) - PAGE 5 - COMPANY:                         (initial)    4. CONTINUED HEALTH PLAN COVERAGE: Executive will continue to be  eligible for the continued health plan coverage set forth on Appendix B to this  Agreement, which is incorporated herein by reference.      5. EQUITY AWARDS:    (a) The periods Executive (i) is employed by the Company during the CEO  Period and the Transition Period and (ii) provides service as a director on  the Board during the Board Period will each constitute “Continuous  Service” under the terms of Executive’s equity awards under the Equity  Plan and Executive will continue to vest in his outstanding unvested equity  awards during such employment or service in accordance with the terms of  the applicable award agreements and the Equity Plan, and such awards shall  otherwise remain subject to the terms of the applicable award agreements  and the Equity Plan; provided, however, that such treatment and continued  vesting of equity awards during the Transition Period and Board Period is  conditioned on Executive’s timely execution of the release attached as  Appendix A hereto on the CEO Transition Date in accordance with  Section 2(a) and on the Retirement Date in accordance with Section 3(a),  respectively.    (b) If a Change in Control (as defined in the Equity Plan) occurs, (i) Executive’s  then outstanding restricted stock units will vest immediately prior to such  Change in Control, and (ii) Executive’s then outstanding performance- based restricted stock units (“PRSUs”) will vest immediately prior to such  Change in Control at (A) the target performance level for any incomplete  portions of any Measurement Periods (as defined in the applicable PRSU  award agreement) and (B) the actual performance level for the completed  portions of any Measurement Periods though the date on which the Change  in Control occurs (to the extent such PRSUs had not previously vested), in  either case, calculated in accordance with Section 4(d) of Appendix A to the  applicable PRSU award agreement and subject to Executive’s Continuous  Service through the date such Change in Control occurs.     6. CHAIRMAN EMERITUS: Beginning on the date Executive ceases to serve on the  Board for any reason (unless he is terminated or resigns under circumstances that  would constitute Cause) and ending on the earlier to occur of (i) a Change in  Control or (ii) Executive’s death, Executive shall carry the title of Chairman  Emeritus of the Company, which shall be a non-fiduciary role and shall carry with  it no rights (including no right to attend meetings of the Board), authority, duties or  responsibilities, and for which Executive shall receive no compensation.    7. EXPENSES: With the approval of the Board or the Successor CEO (as applicable),  the Company shall reimburse Executive for reasonable expenses incurred  (consistent with the Company’s reimbursement practices for its executive officers  or directors, as applicable and as in effect from time to time) by Executive in  
 
 
  EXECUTIVE:                          (initial) - PAGE 6 - COMPANY:                         (initial)    connection with the performance of the services under this Agreement. Upon  termination of this Agreement, Executive shall be entitled to reimbursement for any  reasonable expenses incurred prior to the date of termination and previously  approved by the Board or the Successor CEO (as applicable).    8. RESTRICTIVE COVENANTS:     (a) Executive acknowledges that all of the restrictions, obligations and  provisions set forth in the Agreement Regarding Confidential Information,  Intellectual Property Non-Solicitation between Executive and the  Company, dated as of April 16, 2012 (the “Restrictive Covenants  Agreement”), remains in full force and effect in accordance with its terms.    (b) Executive will not disparage, defame or otherwise detrimentally comment  upon the Company or its affiliates, or their parents, subsidiaries, successors,  predecessors and affiliates, or their parents, members, directors, officers,  employees, investors, stockholders, shareholders, agents, attorneys,  predecessors, insurers, affiliates and assigns, including their business  practices or products, in any manner. Executive acknowledges that such  comment would cause serious damage to the Company and any breach of  this provision shall constitute a material breach of this Agreement. The  Company will direct its executive officers and members of its Board to not  disparage, defame or otherwise detrimentally comment upon Executive or  Executive’s employment or services with the Company.     (c) Notwithstanding anything in this Agreement to the contrary, (i) nothing in  this Agreement or otherwise limits Executive’s right to any monetary award  offered by a government-administered whistleblower award program for  providing information directly to a government agency (including the  Securities and Exchange Commission pursuant to Section 21F of the  Securities Exchange Act of 1934, the Dodd-Frank Wall Street Reform and  Consumer Protection Act or The Sarbanes-Oxley Act of 2002); and  (ii) nothing in this Agreement prevents Executive from providing, without  prior notice to the Company, information to governmental authorities  regarding possible legal violations or otherwise testifying or participating  in any investigation or proceeding by any governmental authorities  regarding possible legal violations, and for purpose of clarity Executive is  not prohibited from providing information voluntarily to the Securities and  Exchange Commission pursuant to Section 21F of the Securities Exchange  Act of 1934.    9. INDEMNIFICATION: Executive shall indemnify, defend and hold Company, its  affiliates and employees harmless against all losses, damages, liabilities, costs and  expenses (including but not limited to attorneys’ fees) resulting from any and all  
 
 
  EXECUTIVE:                          (initial) - PAGE 7 - COMPANY:                         (initial)    third-party actions, suits, claims, or other legal proceedings arising out of the  actions or inactions of Executive in performing the services to the Company.     10. TERM/SURVIVAL: The Agreement shall be effective as of the Effective Date and  either party may terminate this Agreement (effective immediately or at such other  time as set forth in the notice of termination), with or without cause, at any time  and for any reason. The Agreement shall automatically terminate on the earliest of  (i) the date Executive voluntarily terminates Executive’s employment for any  reason prior to the 6-month anniversary of the CEO Transition Date, (ii) the date  the Company terminates Executive’s employment either for or without Cause prior  to the 6-month anniversary of the CEO Transition Date, or (iii) the date Executive  ceases to be a director on the Board for any reason, in each case, unless the  Company in its sole discretion offers Executive an extension in writing and  Executive accepts the terms of such extension in writing; provided, however, that  this Agreement shall terminate immediately if Executive does not execute the  release agreement attached as Appendix A hereto on (x) the CEO Transition Date  in accordance with Section 2(a) or (y) the Retirement Date in accordance with  Section 3(a), or if Executive revokes either such release agreement following its  execution by Executive within the time frame set forth in such release agreement.  The termination of this Agreement shall not affect (i) Executive’s rights under  Section 5 of this Agreement (provided that Executive continues to serve as a  director on the Board), and (ii) Executive’s rights under Sections 4 or 6 of this  Agreement. Sections 7, 8, 9, 10, 12, 13, 14, 15, 16, 17 and 18 of this Agreement  shall also survive the termination of this Agreement.    11. ASSIGNMENT: It is mutually acknowledged that this Agreement contemplates the  personal services of Executive and, accordingly, this Agreement or any rights or  obligations hereunder or interest herein may not be assigned, transferred or  otherwise delegated by Executive without the express prior written consent by  Company. Any attempted sale, assignment, transfer, conveyance, or delegation by  Executive in violation of this Section 11 shall be void.    12. TERMINATION OF OFFER LETTER: The Offer Letter, and any and all  obligations thereunder, is hereby terminated, superseded and replaced in its entirety  by this Agreement as of the Effective Date. For the avoidance of doubt, the  Indemnification Agreement between the Company and Executive, dated July 9,  2021 (the “Indemnification Agreement”) shall remain in full force and effect in  accordance with its terms.     13. EQUIPMENT AND FACILITIES: During the Transition Period, Executive may  use equipment and facilities of the Company provided such are available and solely  at the Company’s discretion.  In the event of voluntary or involuntary termination  of this Agreement during the Transition Period, all equipment and/or other property  of Company, including without limitation all code, development tools, and other  technology that were supplied by Company, or a client, supplier, customer or  partner of Company, to Executive, as well as notes, reports, documentation, and  
 
 
  EXECUTIVE:                          (initial) - PAGE 8 - COMPANY:                         (initial)    drawings pertaining to such code and technologies, or other Company intellectual  property and trade secret information shall be returned to Company by Executive  upon the effective date of termination.     14. ARBITRATION: Any and all disputes arising out of and/or relating in any way to  the interpretation or performance of this Agreement and/or services provided  pursuant to this Agreement shall be resolved at the request of either party through  binding arbitration through JAMS and conducted in Alameda County, California,  in accordance with the JAMS Arbitration Rules and Procedures. Judgment upon  any award by the arbitrators may be entered by the state or federal court having  jurisdiction. The parties intend that this Agreement to Arbitrate be irrevocable.    15. ATTORNEY’S FEES: The Company shall reimburse Executive for reasonable  legal fees incurred in the negotiation of this Agreement. In the event any legal  action, including arbitration, is instituted to enforce any of the terms of this  Agreement, the prevailing party shall be entitled to reasonable attorney’s fees, costs  and expenses.    16. NOTICES: Any notices, authorizations, and requests made in connection with the  subject matter of this Agreement shall be in writing and shall be effective when  delivered personally to the other party for whom intended (including by courier),  or within five (5) days following deposit of same into the United States mail,  certified mail, return receipt requested, first class postage prepaid, addressed to  such party at the address set forth below its signature to this Agreement. Either  party may designate a different address by notice to the other party given in  accordance herewith.    17. COOPERATION: Executive agrees to be available to and cooperate with the  Company in any Company internal investigation or administrative, regulatory, or  judicial proceeding, arbitration or other settlement or dispute that relates to events  occurring during the CEO Period, the Transition Period or the Board Period or  about which the Company otherwise believes Executive may have relevant  information, and Executive agrees to provide full and accurate information and  reasonable assistance with respect to the same. Executive acknowledges that such  cooperation may include, but is not limited to, attending meetings with the  Company and its counsel, executing transition agreements, licenses, or other  contracts, providing depositions or interrogatories, and providing testimony to any  court, agency or adjudicatory body as requested by the Company. In the event that  the Company asks for Executive’s cooperation in accordance with this Section 17,  the Company agrees to reimburse (or advance, as reasonably needed) Executive for  reasonable travel expenses, including lodging and meals, upon submission of  receipts to the Company for such expenses and reasonable out of pocket expenses  for attorneys fees incurred with respect to such cooperation. Further, Executive  shall not knowingly encourage, counsel or assist any non-governmental attorneys  or their clients in the presentation or prosecution of any disputes, differences,  grievances, claims, charges, lawsuits, complaints, or other adverse claims or actions  
 
 
  EXECUTIVE:                          (initial) - PAGE 9 - COMPANY:                         (initial)    by any non-governmental third party against any of the Releasees (as defined in the  release agreement attached as Appendix A hereto) which include the Company and  its affiliates, and their parents, subsidiaries, successors, predecessors and affiliates,  and their partners, members, directors, officers, employees, stockholders,  shareholders, agents, attorneys, predecessors, insurers, affiliates and assigns and  will not provide any information to any non-governmental third party concerning  any of the Releasees, unless compelled to do so by valid subpoena or other court  order, and in such case only after first notifying the Company sufficiently in  advance of such subpoena or court order to reasonably allow the Company an  opportunity to object to the same. Executive agrees to notify the Company via email  to Tiffany Meriweather, Chief Administrative and Legal Officer,  (tiffany.meriweather@five9.com) or to the Company’s then-current General  Counsel or Chief Legal Officer) in the event of any requests for information or  testimony that Executive receives in connection with any of the foregoing. If in  connection with a request for cooperation or assistance, Executive reasonably  believes, after consultation with competent counsel, that he faces a conflict of  interest as between himself and the Company under the applicable ethical rules,  Company will pay for Executive’s representation by a mutually agreed upon  counsel.    18. GENERAL PROVISIONS:    (a) This Agreement shall be governed by and construed in accordance with the  laws of the State of California.    (b) This Agreement may not be changed or modified, in whole or part, except  by a writing signed by both parties.    (c) If any provision of this Agreement shall be found to be invalid or  unenforceable, the remaining provisions shall nevertheless remain in full  force and effect.    (d) Without in any way limiting the remedies available to the Company,  Executive agrees if Executive breaches or threatens to breach this  Agreement, the Company shall have the right to obtain an injunction against  Executive.    (e) This Agreement, together with Appendix A and Appendix B attached  hereto, sets forth the entire understanding between the parties with respect  to the subject matter hereof. It replaces and supersedes any other agreement,  representation, or promise which may have existed between the parties,  excluding the Indemnification Agreement, the Restrictive Covenants  Agreement and agreements regarding Executive’s current equity awards  under the Equity Plan, but including any other agreement between  Executive and the Company.     
 
 
  EXECUTIVE:                          (initial) - PAGE 10 - COMPANY:                         (initial)    (f) This Agreement is binding upon and shall insure the benefit of the legal  successors and assigns of the parties.  
 
 
NAI-5001811864v11   IN WITNESS WHEREOF, the parties hereto have executed this Agreement as of  the Effective Date.  Five9, Inc.:    Executive:   By:    By:   Name: Name: Michael Burkland  Title: Title: Chief Executive Officer  Address: 3001 Bishop Drive, Suite #350  San Ramon, CA 94583  Address:    Date:  Date:  Chief Administrative and Legal Officer July 31, 2025 July 31, 2025  /s/ Michael Burkland /s/ Tiffany Meriweather  Tiffany Meriweather 
 
 
    A-1      APPENDIX A    Release Agreement    I understand that this Release Agreement (this “Release”) constitutes the complete,  final and exclusive embodiment of the entire agreement between the Company, affiliates  of the Company and me with regard to the subject matter hereof. I am not relying on any  promise or representation by Five9, Inc. (the “Company”) or an affiliate of the Company  that is not expressly stated herein or therein.    I hereby acknowledge and agree to the following:  (a)  My employment [as Chief Executive Officer of the Company] / [as  Executive Chair of the Board of the Company] ceased effective _____________ (the  “Release Date”), in connection with my voluntary retirement and I will be paid all salary  due to me through the Release Date. I am not entitled to any benefits or severance under  the Company’s 2019 Key Employee Severance Benefit Plan.  (b)  I entered in an Employment Transition Agreement (“Transition Agreement”)  with the Company effective as of July 31, 2025, which provides certain benefits for  services provided during the [Transition Period] / [Board Period] (as defined in the  Transition Agreement); provided, however, that such benefits will not be provided unless  I executive this Release and will no longer be provided if I breach the terms of this Release.  I hereby confirm my obligations under the Agreement Regarding Confidential  Information, Intellectual Property Non-Solicitation between me and the Company, dated  as of April 16, 2012.  Except as otherwise expressly set forth in this Release, I hereby generally and  completely release the Company and its affiliates, and their parents, subsidiaries,  successors, predecessors and affiliates, and their partners, members, directors, officers,  employees, stockholders, shareholders, agents, attorneys, predecessors, insurers, affiliates  and assigns (“Releasees”), from any and all claims, liabilities and obligations, both known  and unknown, that arise out of or are in any way related to events, acts, conduct or  omissions occurring at any time prior to and including the date I sign this Release. This  general release includes, but is not limited to: (a) all claims arising out of or in any way  related to my employment with the Company and its affiliates, or their affiliates, or the  severance of that employment; (b) all claims related to my compensation or benefits,  including salary, bonuses, commissions, vacation pay, expense reimbursements, severance  pay, fringe benefits, stock, stock options or any other ownership interests in the Company  and its affiliates, or their affiliates; (c) all claims for breach of contract, wrongful  termination and breach of the implied covenant of good faith and fair dealing; (d) all tort  claims, including claims for fraud, defamation, emotional distress and discharge in  violation of public policy; and (e) all federal, state, provincial and local statutory claims,  including claims for discrimination, harassment, retaliation, attorneys’ fees or other claims  arising under the California Labor Code, including the Private Attorneys General Act, the  
 
 
    A-2    federal Civil Rights Act of 1964 (as amended), the federal Americans with Disabilities Act  of 1990 (as amended), the federal Age Discrimination in Employment Act (as amended)  (“ADEA”) and the federal Employee Retirement Income Security Act of 1974 (as  amended). To the maximum extent permitted by law, the Release includes all claims of  every nature and kind whatsoever, whether known or unknown, suspected or unsuspected.  By releasing such claims, I expressly waive the protections of Section 1542 of the Civil  Code (or any other statute or legal doctrine purporting to limit the scope of a general  release) which provides:  A general release does not extend to claims that the creditor or releasing party  does not know or suspect to exist in his or her favor at the time of executing the  release and that, if known by him or her, would have materially affected his or  her settlement with the debtor or released party.  Notwithstanding the foregoing, I understand that the following rights or claims are  not included in my Release: (a) any rights or claims for indemnification I may have  pursuant to any written indemnification agreement with the Company or its affiliate to  which I am a party; the charter, bylaws or operating agreements of the Company or its  affiliate; or under applicable law; (b) any rights or claims I have to vested equity; (c) any  rights or claims I have under the Employment Transition Agreement; or (d) any rights  which cannot be waived as a matter of law. In addition, I understand that nothing in this  Release prevents me from filing, cooperating with or participating in any proceeding before  the Equal Employment Opportunity Commission, the U.S. Department of Labor, or similar  state agencies, except that I hereby waive my right to any monetary benefits in connection  with any such claim, charge or proceeding before such entities. I further understand that  nothing in this Release Agreement is intended to interfere with or discourage my good faith  disclosure to any governmental entity related to a suspected violation of the law, or ability  to recover monetary payment for such disclosure.  Notwithstanding anything in this  Release to the contrary, (a) nothing in this Release or otherwise limits my right to any  monetary award offered by a government-administered whistleblower award program for  providing information directly to a government agency (including the Securities and  Exchange Commission pursuant to Section 21F of the Securities Exchange Act of 1934,  the Dodd-Frank Wall Street Reform and Consumer Protection Act or The Sarbanes-Oxley  Act of 2002); and (b) nothing in this Release prevents me from providing, without prior  notice to the Company, information to governmental authorities regarding possible legal  violations or otherwise testifying or participating in any investigation or proceeding by any  governmental authorities regarding possible legal violations, and for purpose of clarity I  am not prohibited from providing information voluntarily to the Securities and Exchange  Commission pursuant to Section 21F of the Securities Exchange Act of 1934.  I understand that I cannot and will not be held criminally or civilly liable under any  federal or state trade secret law for disclosing otherwise protected trade secrets and/or  confidential or proprietary information so long as the disclosure is made in (1) confidence  to a federal, state, or local government official, directly or indirectly, or to an attorney and  solely for the purpose of reporting or investigating a suspected violation of law; or (2) a  
 
 
    A-3    complaint or other document filed in a lawsuit or other proceeding, so long as such filing  is made under seal. I further understand that the Company will not retaliate against me in  any way for a disclosure made pursuant to this paragraph. Further, in the event I make such  a disclosure, and file a lawsuit against the Company alleging that the Company retaliated  against me because of his disclosure, I understand that I may disclose the relevant trade  secret or confidential information to my attorney, and may use the same in the court  proceeding only if (1) I ensure that any court filing that includes the trade secret or  confidential information at issue is made under seal; and (2) I do not otherwise disclose the  trade secret or confidential information except as required by court order.  I hereby represent and warrant that, other than the claims identified in this  paragraph, I am not aware of any claims I have or might have that are not included in the  Release.  I acknowledge that I am knowingly and voluntarily waiving and releasing any  rights I may have under the ADEA, and that the consideration given under the Transition  Agreement for the waiver and release in the preceding paragraphs hereof is in addition to  anything of value to which I was already entitled. I further acknowledge that I have been  advised by this writing, as required by the ADEA, that: (a) my waiver and release do not  apply to any rights or claims that may arise after the date I sign this Release; (b) I should  consult with an attorney prior to signing this Release (although I may choose voluntarily  not do so); (c) I have had at least twenty-one (21) days to consider this Release (although  I may choose voluntarily to sign this Release earlier); (d) I have seven (7) days following  the date I sign this Release to revoke the Release by providing written notice to an officer  of the Company; and (e) this Release will not be effective until the date upon which the  revocation period has expired, which will be the eighth (8th) day after I sign this Release.  Other than as expressly set forth herein, I hereby represent that I have been paid all  compensation owed and for all hours worked; I have received all the leave and leave  benefits and protections for which I am eligible pursuant to the Family and Medical Leave  Act, or otherwise; and I have not suffered any on-the-job injury for which I have not already  filed a workers’ compensation claim.     
 
 
    A-4    I acknowledge that to become effective, I must sign and return this Release to the  Company so that it is received [on the CEO Transition Date] / [on the Retirement Date]  (as defined in the Transition Agreement).  EXECUTIVE:  Michael Burkland  By:_____________________________  Date: ____________________________  COMPANY:  By: _____________________________  Name:      Title:      Date:        
 
 
    B-1    APPENDIX B    Continued Health Plan Coverage      Subject to the other provisions of the Employment Transition Agreement (the “Transition  Agreement”), by and between you and Five9, Inc. (the “Company”) you shall be eligible  to be covered under the major medical, dental and vision benefit programs that are  currently or in the future sponsored by the Company (or an entity in its controlled group),  and which are generally available to active employees (the “Health Plan”), during your  tenure as Chief Executive Officer and Executive Chair of the Board of the Company  (“Executive Chairman”). Subject to the other provisions of this Appendix B, at such time  as you cease to serve as the Chief Executive Officer or Executive Chairman (whichever is  latest), you shall continue to be eligible to be covered under the Health Plan as a director  on the Board and/or former employee of the Company to the extent provided under the  paragraph with the header “Ongoing Coverage” below, which, as you know, is a benefit  that had been provided under your Offer Letter by and between you and the Company,  dated as of October 10, 2022, before it was replaced with the Transition Agreement. To  the extent that you are eligible to be covered under the Health Plan as set forth in this  Appendix B, you can elect to cover your spouse and any eligible dependents (each as  defined in the Health Plan) under the Health Plan, all in accordance with the generally  applicable provisions of the Health Plan documents regarding coverage of spouses and  eligible dependents.    Subject to the other provisions of the Transition Agreement, from and after such time as  you or a covered spouse or eligible dependent is eligible for Medicare Part A and Part B  (collectively, “Medicare”), the Health Plan will pay secondary to Medicare, in  accordance with the generally applicable provisions of the Health Plan documents, and  without regard to whether such person is actually enrolled in Medicare Part A or Part B.    The Company shall pay 100% of the cost of the Health Plan premiums for the coverage  for you and your covered spouse and eligible dependents. Notwithstanding the foregoing  sentence, if any program under the Health Plan becomes self-funded (in whole or in part),  then for the program that is self-funded: (1) you shall pay the Company the cost of such  self-funded coverage, calculated in the same manner as COBRA, for you and your  covered spouse’s and eligible dependents’ coverage using your own post-tax resources  and (2) such payment will be due to the Company with respect to each month of coverage  within sixty (60) days of the first day of the month of coverage. For example, if the major  medical plan first becomes self-funded as of January 1, 2026 and the dental and vision  plans are fully-insured as of that date, you must pay the Company the cost of the January  2026 coverage under the major medical plan by February 28, 2026 and you would not  owe any payment to the Company for the premiums related to the vision and dental plans  for January 2026. The Company is required to inform you as soon as reasonably possible  in writing if any Health Plan program is self-funded to ensure that you are aware of any  obligation to pay the Company for any portion of the cost of coverage under the Health  Plan.  
 
 
    B-2      Notwithstanding anything in the Transition Agreement to the contrary, you (and your  spouse and eligible dependents) shall only be entitled to coverage under the Health Plan  to the extent that such coverage complies, or using commercially reasonable efforts can  be modified to comply (for example, by making the cost of coverage taxable to you),  with the nondiscrimination requirements set forth in Internal Revenue Code (the “Code”)  Section 105(h) and Section 2716 of the Public Health Service Act, as incorporated into  the Code and the Employee Retirement Income Security Act of 1974, as amended. In the  event that the Company in good faith determines that the Health Plan cannot be modified  using commercially reasonable efforts (a “Nondiscrimination Event”), the provisions of  the paragraph set forth below with the header “EPP” shall apply.      Ongoing Coverage.  If you cease to serve as the Chief Executive Officer or Executive  Chairman, given that the Company no longer has Aetna as the insurance carrier or third- party administrator for the major medical benefit program, the Company will use  commercially reasonable efforts to continue being able to provide ongoing coverage  (“Ongoing Coverage”) for you (and your spouse and eligible dependents) in each of the  programs under the Health Plan for the time that you are serving as a director on the  Board and after you cease to be in service to the Company as an employee or director. In  the event that the Company determines in good faith that in using its commercially  reasonable efforts it is unable to obtain commercially reasonable Ongoing Coverage, the  Company will provide a runway in order to allow you a period of time to transition to  alternative coverage for the program that is no longer available. The Company shall  provide you with at least thirty (30) days prior written notice before coverage under any  of the Health Plan programs is terminated, and this prior written notice requirement  applies separately to each program under the Health Plan. This runway shall begin no  later than thirty (30) days prior to the last day of the last plan year in which the Company  has determined, in good faith, that it cannot provide Ongoing Coverage for the program  to you (such last day, the “Ongoing Coverage Ending Date”). The runway shall continue  for a period ending on the earlier of (A) the 12-month anniversary of the Ongoing  Coverage Ending Date and (B) the last date for which the Company is able to negotiate,  using commercially reasonable efforts, continued coverage for you in such program after  the Ongoing Coverage Ending Date. For the avoidance of doubt, the obligation described  in this paragraph shall apply separately to each of the major medical, dental, and vision  programs.    EPP. In the event that you cease to be eligible for Ongoing Coverage in the major  medical program under the Health Plan in accordance with the immediately preceding  paragraph or a Nondiscrimination Event has occurred, the Company shall establish a  retiree-only employer payment plan under Code Section 106 (“EPP”) that will reimburse  you, on a non-taxable basis, for the amount of individual health insurance premiums  incurred for coverage for you and your spouse and eligible dependents. The Company  shall credit your account under the EPP with $45,000 per year during your lifetime to be  used during such year as described above, with any amounts unused during the year  forfeited to the Company.  
 
 
    B-3      For the avoidance of doubt, no survivor coverage is available under this Appendix B. The  provisions of this Appendix B shall survive any termination of your employment for any  reason, but shall be conditioned upon you signing and not revoking the Company’s  standard form of release as set forth in Appendix A to the Transition Agreement on the  Retirement Date (as defined in the Transition Agreement) in connection with your  termination of employment.