---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-011418"
form_type: "8-K"
ticker: null
cik: "0001918080"
company_name: "Deep Isolation Nuclear, Inc."
filed_at: "2026-02-03T23:59:59+00:00"
generated_at: "2026-05-16T05:24:49.614346+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Deep Isolation enters Halliburton MSA to build deep borehole test well at Cameron, TX

## Summary
- Parties: Deep Isolation US LLC (wholly owned sub of Deep Isolation Nuclear) and Halliburton Energy Services.
- Purpose: construction of full-scale-at-depth demonstration test well at Halliburton's Cameron, TX site to validate Universal Canister System and deep borehole drilling solution.
- Expected duration: ~3 years for construction, preparation, and initial demonstration; MSA terminable on 30 days notice.
- No radioactive material allowed at Halliburton site; Company assumes all nuclear regulatory compliance and indemnifies Halliburton for nuclear incidents and environmental liabilities.
- Halliburton's aggregate liability capped at $5M; Company indemnifies Halliburton for most losses including nuclear and environmental.

## SEC filing metadata
- accession: 0001213900-26-011418
- form_type: 8-K
- cik: 0001918080
- company_name: Deep Isolation Nuclear, Inc.
- filed_at: 2026-02-03T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1918080/000121390026011418/0001213900-26-011418-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1918080/000121390026011418/ea0275367-8k_deep.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-011418
- JSON: https://secwatch.observer/filing/0001213900-26-011418.json
- Plain text: https://secwatch.observer/filing/0001213900-26-011418.txt

## Key facts
- Material Agreements
  Deep Isolation Nuclear, Inc. entered into Master Services Agreement with Halliburton Energy Services, Inc. (effective 2026-01-28).
  - Action: entry
  - Counterparty: Halliburton Energy Services, Inc.
  - Effective: 2026-01-28
  source text: Deep Isolation US LLC, a wholly owned subsidiary of Deep Isolation Nuclear, Inc. (collectively, the “Company” or “Deep Isolation”), entered into a Master Services Agreement (the “MSA”) with Halliburton Energy Services, Inc. (“Halliburton”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1918080/000121390026011418/0001213900-26-011418-index.htm

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