---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-260665"
form_type: "8-K"
ticker: "CIEN"
cik: "0000936395"
company_name: "CIENA CORP"
filed_at: "2026-06-08T11:08:08+00:00"
generated_at: "2026-06-08T11:10:52.319957+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Ciena announces $2.0B convertible notes offering to repay term loan and buy back stock

## Summary
- Offers $2.0B aggregate principal of convertible senior notes due 2031; initial purchasers have $300M over-allotment option.
- Net proceeds used to repay $1.14B outstanding term loan, repurchase up to $140M common stock, and pay hedge/warrant costs.
- Expects to enter convertible note hedge and warrant transactions to reduce potential dilution from conversion.
- Amends credit agreement to extend revolving facility maturity to Oct 2030 and adjust interest rate margins and commitment fees.
- Offering and credit agreement amendment are cross-conditional on repayment of existing term loan.

## SEC filing metadata
- accession: 0001193125-26-260665
- form_type: 8-K
- ticker: CIEN
- cik: 0000936395
- company_name: CIENA CORP
- filed_at: 2026-06-08T11:08:08+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/936395/000119312526260665/0001193125-26-260665-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/936395/000119312526260665/d125730d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-260665
- JSON: https://secwatch.observer/filing/0001193125-26-260665.json
- Plain text: https://secwatch.observer/filing/0001193125-26-260665.txt

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