五九科技 FIVN

Mr. Andy Dignan has served as our President since March 2025, and prior to that served as our Chief Operating Officer since November 2023. Prior to that, Mr. Dignan served as our Chief Customer Officer from December 2022, and prior to that served in various executive positions with the Company since his initial hire as Senior Vice President, Professional Services in September 2018. Prior to Five9, Mr. Dignan served as the Global Head of Collaboration & Contact Center GTM at Cisco Systems, Inc., a networking, cloud, and cybersecurity solutions company (Cisco) from November 2014 to September 2018

Bryan Lee appointed as our Chief Financial Officer in July 2025. Prior to that time, Mr. Lee served as our Interim Chief Financial Officer from April 2025 to July 2025, as our Executive Vice President, Finance from December 2024 to April 2025 and our Treasurer since April 2024. Prior to that, Mr. Lee served as our Senior Vice President, FP&A from September 2019 to December 2024, Vice President, FP&A from April 2015 to September 2019 and Senior Director, FP&A from August 2014 to April 2015. Previously, Mr. Lee was a Vice President of J.P. Morgan's Technology investment banking group, where he provided strategic advice on mergers and acquisitions, initial public offerings, and other financial transactions for technology clients. Mr. Lee holds a B.A. in Architecture from U.C. Berkeley and an M.B.A. from U.C. Berkeley's Haas School of Business.

Ms. Tiffany Meriweather has served as our Chief Administrative and Legal Officer and Corporate Secretary since July 2025. Prior to that, Ms. Meriweather served as Chief Legal Officer and Corporate Secretary from March 2025 to July 2025 and interim Chief Legal Officer and Corporate Secretary from September 2024 to March 2025. Prior to joining Five9, she served as SVP, General Counsel and Corporate Secretary of Guitar Center, Inc. from May 2024 to September 2024. Prior to Guitar Center Inc., she served as the Chief Legal Officer and Corporate Secretary of Enjoy Technology, Inc., a mobile retail and technology company from April 2021 to May 2024, as well as interim Principal Executive Officer and Consultant from September 2022 to Mary 2024. Ms. Meriweather has also served as Senior Vice President, Legal and Assistant Secretary at Clear Channel Outdoor (NYSE: CCO), and as Vice President, Counsel, Corporate and Securities at CBS Corporation (NASDAQ: PARA). Prior to CBS, she served as a corporate attorney at Skadden, Arps, Slate, Meagher & Flom LLP from October 2008 to September 2017. Ms. Meriweather received a Bachelor of Arts degree with a double major in Psychology and Political Science from Emory University, and a Juris Doctor from Columbia Law School.

Michael Burdiek, has served as a member of our Board of Directors since September 2015. From October 2020 to November 2021, Mr. Burdiek served as the Chief Executive Officer and also as a member of the board of directors of Motion Acquisition Corp. until its business combination with DocGo, Inc. Since November 2021, Mr. Burdiek has served on the board of directors of DocGo and a member of the board of directors of IntelliShift, a provider of mobility management software. From June 2011 to March 2020, Mr. Burdiek served as President and Chief Executive Officer and as a member of the board of directors of CalAmp Corp., a global provider of telematics software and technologies. Prior to CalAmp, Mr. Burdiek was President and Chief Executive Officer of Telenetics Corporation, a provider of networking and communications products. Mr. Burdiek holds an M.B.A. and an M.S. degree in electrical engineering from California State University, Fullerton, and a B.S. degree in electrical engineering from Kansas State University.

Susan Barsamian, has served as a member of our Board of Directors since January 2021. Ms. Barsamian served as Chief Sales and Marketing Officer for Hewlett Packard Enterprise Software (HPE) from November 2016 to September 2017 through its merger with Micro Focus International plc in September 2017. From August 2015 to November 2016, she served as General Manager of Enterprise Security Products at HPE. From 2006 to 2015, she served in various roles at Hewlett Packard. Earlier in her career, she held leadership positions at Mercury Interactive and Verity, Inc. Since August 2020, she has served on the Board of Directors for Kansas State University Foundation. Ms. Barsamian currently serves on the Board of Directors of GEN Digital, Inc., a consumer cyber safety company, and Box, Inc., a cloud content management company. Ms. Barsamian holds a B.S. with honors in electrical engineering from Kansas State University

Julie Iskow,has served as a member of our Board of Directors since February 2023. Ms. Iskow serves as the President and Chief Executive Officer of Workiva Inc. (Workiva), a position she has held since April 2023. She was previously the Executive Vice President and Chief Operating Officer of Workiva from October 2019 to March 2022, and the President and Chief Operating Officer from March 2022 to April 2023. Prior to joining Workiva, Ms. Iskow served as Chief Technology Officer of Medidata Solutions, Inc. from April 2015 to October 2019, and was also its Executive Vice President of Product Development from July 2016 to October 2019. From December 2013 to March 2015, Ms. Iskow served as Chief Information Officer and Senior Vice President at WageWorks, Inc., and prior to that as its Senior Vice President of Product Development and Vice President of Product Development. Ms. Iskow has also served as Vice President of Engineering at Asyst Technologies and GW Associates, Inc. Ms. Iskow has served as a member of the board of directors of Workiva since January 2021. Ms. Iskow also previously served as a member of the board of directors of Vocera Communications, Inc. from May 2019 until its acquisition in February 2022 and as a member of the board of directors of Cvent Holding Corp. from May 2022 to July 2022. Ms. Iskow earned a B.S. degree from the University of California, Berkeley and an M.S. degree from University of California, Davis.

Maria Walker, has served as a member of our Board of Directors since May 2024 and as chairperson of our Audit Committee since May 2025. Since March 2024, Ms. Walker has served as chairperson of the audit committee of Maplight Therapeutics, Inc., a publicly traded biopharmaceutical company focused on central nervous system disorders. From August 2020 until her retirement in December 2023, Ms. Walker was a Founding Partner and Chief Financial Officer of Patient Square Capital, a private equity firm dedicated to investing in healthcare companies. Ms. Walker served as Chief Financial Officer of Montes Archimedes Acquisition Corp, a special purpose acquisition company from October of 2020 until September 2021 when it merged with Roivant Sciences. Ms. Walker also served on the board of directors of ForgeRock Inc. and as Audit Committee Chairman from November 2019 until August of 2023, when it was acquired by Thoma Bravo. From July 2018 to February 2020, Ms. Walker was co-founder and CEO of Recuerdo Therapeutics a seed stage biotech company. From 2008 to 2018, Ms. Walker held various leadership roles at KPMG U.S, a public accounting firm, including Audit Partner, Senior Director of the Venture Capital Practice and a Global Lead Partner, Private Equity and she led the Bay Area Asset Management Practice. Ms. Walker holds a B.A. in Economics from the University of California, San Diego.

Mr. Amit Mathradas has served as our Chief Executive Officer and a member of our Board of Directors since February 2026. From March 2023 to December 2025, Mr. Mathradas served as Chief Executive Officer and a member of the board of directors for Nintex USA, Inc., a workflow automation company. Prior to that, Mr. Mathradas served as President and Chief Operating Officer of Avalara, Inc., a tax software provider, from March 2019 to January 2023. From November 2015 to March 2019, Mr. Mathradas served as General Manager and Head of North American Small Business at PayPal, a digital payments company, where he led the company's small business segment, managing teams responsible for acquisition, activation, cross-sell, and retention of small businesses. From September 2013 to October 2015, Mr. Mathradas served as Senior Vice President and General Manager of Web.com, an internet services offering, focusing on small businesses. Mr. Mathradas holds a bachelor's degree from Wittenberg University and an M.B.A from Northwestern University's Kellogg School of Management.

Mr. Matthew E. Tuckness has served as our Chief Revenue Officer since July 2025. Prior to that, Mr. Tuckness served as Executive Vice President of Sales and Success from July 2024 to July 2025. Prior to that, Mr. Tuckness served in a variety of sales positions at Five9 from June 2013 to September 2022 and again from June 2023 to July 2024. Mr. Tuckness received a B.A in Economics from Occidental College.

On February 12, 2021, the Board of Directors of Five9, Inc. appointed, with immediate effect, Leena Mansharamani as the Company's Chief Accounting Officer. Ms. Mansharamani has served as the Company's Corporate Controller since August 2017, and continues to hold this position. Prior to joining the Company, Ms. Mansharamani served as Corporate Controller for Imergy Power Systems, Inc., a stationary energy storage company, between October 2010 and July 2016, and as Controller of UTStarcom, Inc., a global telecom infrastructure provider, between September 2008 and February 2010. Prior to that, Ms. Mansharamani was employed at PricewaterhouseCoopers in the U.S. between November 1999 and September 2008, including most recently as an Experienced Manager in its Assurance practice. Ms. Mansharamani earned her MBA in Finance and International Business from Keller Graduate School of Management, DeVry University, Bachelor of Arts in Accounting and Information Systems from Queens College, City University of New York, and is a Certified Public Accountant in California.