Five9, Inc. (NASDAQ:FIVN) ("Five9" or the "Company"), today announced that on July 13, 2026, the Company granted (i) a performance-based restricted stock unit award (the "PRSU") covering 103,867 shares of the Company’s common stock ("Shares") (at target) and a restricted stock unit award (the "RSU") covering 207,734 Shares to Niranjan Vijayaragavan; (ii) a PRSU covering 60,722 Shares (at target) and a RSU covering 121,444 Shares to Rob Hornish; (iii) a PRSU covering 39,948 Shares (at target) and a RSU covering 79,897 Shares to Sven Linsmaier; and (iv) a RSU covering 71,907 Shares to Deniqua Crichlow (collectively, the "Inducement Awards"). The Compensation Committee of the Board of Directors of the Company approved the grant of the Inducement Awards, which were each offered as a material inducement to each of Mr. Vijayaragavan, Mr. Hornish, Mr. Linsmaier, and Ms. Crichlow entering into employment with the Company, effective as of June 29, 2026, as the Chief Technology Officer, Chief Sales Officer, Executive Vice President, Head of Transformation and Strategy, and Senior Vice President, People, respectively. The Inducement Awards were each granted under the Five9, Inc. 2026 Inducement Equity Incentive Plan. 1/3 of the RSUs will vest on June 3, 2027, and 1/12^th of the RSUs will vest quarterly thereafter, so that the RSUs are fully vested on June 3, 2029, subject to the executive’s continuous service through the applicable vesting date. 60% of the PRSUs vest over a two-year performance period (January 1, 2026 through December 31, 2027) and 40% vest over a three-year performance period (January 1, 2026 through December 31, 2028), in each case, based on achievement of relative total shareholder return and subscription revenue growth performance metrics and subject to the executive’s continuous service through the applicable payment date.

The awards were granted in reliance on the employment inducement exemption under the Nasdaq Stock Market Listing Rule 5635(c)(4), which requires public announcement of inducement awards. The Company is issuing this press release pursuant to Listing Rule 5635(c)(4).

About Five9

Five9 empowers organizations to create hyper-personalized and effortless AI-driven customer experiences that deliver better business outcomes. Powered by Five9 Genius AI, the Five9 Intelligent CX Platform is trusted by 3,000+ customers and 1,400+ partners globally. The New CX starts here, and it’s at the heart of every winning experience. For more information, visit www.five9.com.

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Investor Contact:

Tony Righetti

SVP, Investor Relations

IR@five9.com