Ribbon Q3 Revenue Hits $219M as Optical Wins Lift Q4 Outlook
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Plano, Texas – October 29, 2026 -- Ribbon Communications (Nasdaq: RBBN) reported third-quarter 2026 revenue of $219 million, up 14% sequentially, and guided to $233 million to $247 million for the fourth quarter. Net income improved by $18 million.
Adjusted EBITDA more than doubled to $27 million from $12 million in the second quarter. Non-GAAP operating expenses held flat at $88 million.
Ribbon's year-over-year profitability and margins diverge
Revenue was $219 million against $215 million in the third quarter of 2025. GAAP operating income rose to $6 million from $3 million.
Non-GAAP Adjusted EBITDA slipped to $27 million from $29 million a year earlier. GAAP gross margin fell to 48.2% from 50.1%, and non-GAAP gross margin fell to 50.3% from 52.6%.