PLANO, Texas, April 15, 2026 /PRNewswire/ -- Ribbon Communications Inc. (NASDAQ:RBBN), a global leader in real-time communications technology and IP optical networking solutions, today announced that it will report financial results for the first quarter of 2026 after the close of the market on Tuesday, April 28, 2026. 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 28, 2026

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

ir@rbbn.com

Media Contact

Catherine Berthier

+1 (646) 741-1974

cberthier@rbbn.com

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SOURCE Ribbon Communications Inc.

Ribbon Communications to Report First Quarter 2026 Financial Results on April 28, 2026