On May 21, 2024, the Board of Directors (the ?Board?) of Five9, Inc. (the ?Company?) appointed Ms. Maria Walker to serve on the Board. Ms. Walker will serve as a Class I Director, with a term expiring at the Company's 2027 annual meeting of stockholders. Ms. Walker will also serve on the Audit Committee of the Board.

Ms. Walker served as Founding Partner and Chief Financial Officer of Patient Square Capital, LP, a health care investment firm, from August 2020 until her retirement in December 2023. Ms. Walker served as the Chief Financial Officer for Montes Archimedes Acquisition Corp, a special purpose acquisition company, from October 2020 to September 2021. Ms. Walker co-founded, and served as Chief Executive Officer of, Recuerdo Therapeutics, Inc., a biotechnology company focused on the postponement of Alzheimer?s disease, from July 2018 to February 2020.

From June 2008 to July 2018, Ms. Walker held various leadership roles at KPMG U.S., a public accounting firm, including as Audit Partner, Senior Director of KPMG?s Venture Capital Practice and a Global Lead Partner of Private Equity, and she led the San Francisco Bay Area Asset Management Practice. Ms. Walker served as a member of the board of directors of Forgerock, Inc., an identity and access management software company, from 2019 through its sale in 2023. Ms. Walker holds a B.A. in Economics from the University of California, San Diego.