---
schema_version: "secwatch.filing_event.v1"
accession: "0000936395-21-000046"
form_type: "8-K"
ticker: "CIEN"
cik: "0000936395"
company_name: "CIENA CORP"
filed_at: "2021-11-03T23:59:59+00:00"
generated_at: "2026-06-28T14:47:50.511444+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "low"
source: SEC EDGAR
---

# Ciena completes acquisition of AT&T's Vyatta virtual routing technology

## Summary
- Acquired AT&T's Vyatta virtual routing and switching technology, completed Oct 31, 2021.
- The acquisition aims to bolster Ciena's software-defined networking and edge offerings.
- Vyatta technology supports virtual CPE and network functions virtualization (NFV).
- Financial terms of the deal were not disclosed in the filing.

## SEC filing metadata
- accession: 0000936395-21-000046
- form_type: 8-K
- ticker: CIEN
- cik: 0000936395
- company_name: CIENA CORP
- filed_at: 2021-11-03T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: low
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/936395/000093639521000046/0000936395-21-000046-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/936395/000093639521000046/cien-20211031.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000936395-21-000046
- JSON: https://secwatch.observer/filing/0000936395-21-000046.json
- Plain text: https://secwatch.observer/filing/0000936395-21-000046.txt

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