secwatch.observer — SEC 8-K summary
======================================

Issuer:     Ribbon Communications Inc. (RBBN)
CIK:        0001708055
Form:       8-K
Filed at:   2022-01-20T23:59:59+00:00
Accession:  0001104659-22-005984
Event type: earnings
Sentiment:  negative
Materiality: 0.75
Item codes: 2.02, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Ribbon reports preliminary Q4 2021 revenue $231M, below guidance on supply chain issues
--------------------------------------------------------------------------------

- Revenue $231M, gross margin 50%, non-GAAP gross margin 54%, operating loss $4M, adjusted EBITDA $26M.
- Supply chain issues cut sales ~$10M, causing shortfall vs guidance; costs expected through H1 2022.
- IP Optical Networks segment sales $83M (+20% QoQ); Cloud & Edge $147M with deals pushed to 2022.
- Higher component and logistics costs reduced margins ~220 bps; customer/deal mix added ~200 bps.
- Cash $106M; book-to-bill 1.13; CEO notes new carrier wins in US, Japan, Africa.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1708055/000110465922005984/0001104659-22-005984-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1708055/000110465922005984/tm224005d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-22-005984

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer