---
schema_version: "secwatch.filing_event.v1"
accession: "0001451505-23-000017"
form_type: "8-K"
ticker: "RIG"
cik: "0001451505"
company_name: "Transocean Ltd."
filed_at: "2023-02-15T23:59:59+00:00"
generated_at: "2026-06-19T11:06:10.904117+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Transocean to transfer drillship Ocean Rig Olympia plus cash for GSR stake; expects $150-160M Q1 impairment charge

## Summary
- Subsidiaries agreed Feb. 9, 2023 to transfer stacked ultra-deepwater drillship Ocean Rig Olympia and nominal cash to Global Sea Mineral Resources NV for a noncontrolling ownership interest.
- Q1 2023 results to include estimated non-cash impairment charge of ~$150M to $160M.
- Charge reflects write-down of drillship value upon transfer; company takes equity stake in GSR.
- Rig had been stacked (idle); deal allows Transocean to monetize asset while gaining exposure to seabed mineral resources.

## SEC filing metadata
- accession: 0001451505-23-000017
- form_type: 8-K
- ticker: RIG
- cik: 0001451505
- company_name: Transocean Ltd.
- filed_at: 2023-02-15T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 2.06, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1451505/000145150523000017/0001451505-23-000017-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1451505/000145150523000017/rig-20230215x8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001451505-23-000017
- JSON: https://secwatch.observer/filing/0001451505-23-000017.json
- Plain text: https://secwatch.observer/filing/0001451505-23-000017.txt

## Key facts
- Restructurings & Charges
  Transocean Ltd. announced a impairment with charges of approximately $150 million to $160 million affecting stacked, ultra-deepwater drillship Ocean Rig Olympia.
  - Type: impairment
  - Charge: approximately $150 million to $160 million
  - Affected area: stacked, ultra-deepwater drillship Ocean Rig Olympia
  source text: the Company expects its first-quarter 2023 results to include an estimated non-cash charge ranging from approximately $150 million to $160 million
  evidence_url: https://www.sec.gov/Archives/edgar/data/1451505/000145150523000017/0001451505-23-000017-index.htm

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