Ribbon Communications to Report First Quarter 2025 Financial Results on April 29, 2025

About this update from Ribbon Communications Inc.

PLANO, Texas , April 16, 2025 /PRNewswire/ -- Ribbon Communications Inc. (Nasdaq: RBBN), a leading supplier of real-time communications technology and IP optical networking solutions, today announced that it will report financial results for the first quarter of 2025 after the close of the market on Tuesday, April 29, 2025 . Following the release, Ribbon Communications will host a conference call with the financial community at 4:30 p.m. ET to discuss the results. Conference Call Details and Webcast Date: Tuesday, April 29, 2025 Time: 4:30 p.m. ET Dial-in number (Domestic): 877-407-2991 Dial-in number (International): 201-389-0925 Instant Telephone Access: Call me™ Live (Listen-only) Webcast: Available via the Investor Relations website at investors.ribboncommunications.com , where a replay will also be available shortly following the conference call. About Ribbon Ribbon Communications (Nasdaq: RBBN) delivers secure cloud communications and IP and optical networking solutions to service providers, enterprises and critical infrastructure sectors globally. We engage deeply with our customers, helping them modernize their networks for improved competitive positioning and business outcomes in today's smart, always-on and data-hungry world. Our end-to-end portfolio of communications software and IP Optical networking solutions delivers superior value and innovation by leveraging cloud-native architectures, automation and analytics tools, and leading-edge security. We maintain a keen focus on our commitments to Environmental, Social, and Governance (ESG) matters, offering an annual Sustainability Report to our stakeholders. To learn more about Ribbon, please visit rbbn.com Investor Contact +1 (978) 614-8050 [email protected] Media Contact Catherine Berthier +1 (646) 741-1974 [email protected] View original content to download multimedia: https://www.prnewswire.com/news-releases/ribbon-communications-to-report-first-quarter-2025-financial-results-on-april-29-2025-302430690.html SOURCE Ribbon Communications Inc.

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