Exhibit 99.1 RingCentral Announces First Quarter 2024 Results Q1 2024 key metrics above high end of guidance Raising 2024 revenue outlook Share repurchase authorization increased by $250 million Belmont, Calif. – May 7, 2024 – RingCentral, Inc. (NYSE: RNG), a leading provider of AI-driven cloud business communications, contact center, video, and hybrid event solutions, today announced financial results for the first quarter ended March 31, 2024. First Quarter Financial Highlights • Total revenue increased 9 ...