---
schema_version: "secwatch.filing_event.v1"
accession: "0001451505-25-000106"
form_type: "8-K"
ticker: "RIG"
cik: "0001451505"
company_name: "Transocean Ltd."
filed_at: "2025-09-30T23:59:59+00:00"
generated_at: "2026-05-17T05:15:07.233148+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Transocean launches $500M Senior Priority Notes due 2032 offering to refinance 2027 debt

## Summary
- Offering $500M aggregate principal of Senior Priority Guaranteed Notes due 2032 via Rule 144A/Reg S.
- Notes will be fully and unconditionally guaranteed on a senior unsecured basis by Transocean Ltd and certain subsidiaries.
- Net proceeds used to refinance remaining 8.00% Senior Notes due Feb 2027 and 6.875% Senior Secured Notes due 2027.
- Also funds tender offer up to $50M combined for 7.35% Senior Notes due 2041 (step-up to 9.35%) and 7.00% Notes due 2028.
- Timing and pricing subject to market conditions; pending proceeds may be temporarily invested in short-term instruments.

## SEC filing metadata
- accession: 0001451505-25-000106
- form_type: 8-K
- ticker: RIG
- cik: 0001451505
- company_name: Transocean Ltd.
- filed_at: 2025-09-30T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1451505/000145150525000106/0001451505-25-000106-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1451505/000145150525000106/rig-20250930x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001451505-25-000106
- JSON: https://secwatch.observer/filing/0001451505-25-000106.json
- Plain text: https://secwatch.observer/filing/0001451505-25-000106.txt

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