Exhibit 99.1 RingCentral Announces Third Quarter 2025 Financial Results Total Revenue at the high end of guidance with record operating margins Net cash from operating activities of $151 million, up 19$130 million, up 23% YoY Raising free cash flow outlook for 2025 to over $525 million, a 420 bps of YoY free cash flow margin expansion Belmont, Calif. – November 3, 2025 – RingCentral, Inc. (NYSE: RNG), a global leader in AI-powered business communications, today announced fi ...