---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-22-024259"
form_type: "8-K"
ticker: "RBBN"
cik: "0001708055"
company_name: "Ribbon Communications Inc."
filed_at: "2022-02-16T23:59:59+00:00"
generated_at: "2026-06-27T07:34:48.564671+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Ribbon Communications Q4 revenue $231M, GAAP net loss $96M; announces $20M restructuring

## Summary
- Q4 2021 revenue $231M (down 5% YoY); GAAP diluted EPS $(0.65) vs $0.81; full year revenue $845M flat YoY.
- Non-GAAP adjusted EBITDA $26M in Q4 (down from $49M); full year $120M vs $131M in 2020.
- IP Optical Networks North America revenue up 164% YoY; Cloud & Edge Enterprise sales doubled sequentially and YoY.
- Board approved $20M pre-tax restructuring plan ($6M severance, $14M facilities), mostly cash, substantially completed in 2022.
- Management guides for 10%+ IP Optical revenue growth in 2022; Q1 impacted by supply chain and Ukraine/Russia risks.

## SEC filing metadata
- accession: 0001104659-22-024259
- form_type: 8-K
- ticker: RBBN
- cik: 0001708055
- company_name: Ribbon Communications Inc.
- filed_at: 2022-02-16T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 2.05, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1708055/000110465922024259/0001104659-22-024259-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1708055/000110465922024259/tm226940d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-22-024259
- JSON: https://secwatch.observer/filing/0001104659-22-024259.json
- Plain text: https://secwatch.observer/filing/0001104659-22-024259.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.