---
schema_version: "secwatch.filing_event.v1"
accession: "0001477932-25-001890"
form_type: "8-K"
ticker: "LTBR"
cik: "0001084554"
company_name: "LIGHTBRIDGE Corp"
filed_at: "2025-03-21T23:59:59+00:00"
generated_at: "2026-05-24T08:15:44.719081+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Lightbridge amends Idaho National Lab agreement; increases potential funding by $600K

## Summary
- Modification No. 4 raises potential payable amount to Battelle by ~$600K, total estimated cost to $2.6M under the umbrella SPPA.
- Total estimated cash payments under both agreements now ~$6.8M on a cost-reimbursable basis.
- Battelle and DOE will contribute feedstock for fabrication of enriched uranium/zirconium alloy ingots and fuel coupons.
- Work includes extruding fuel coupons and irradiating them in the Advanced Test Reactor at Idaho National Laboratory.
- Initial term of the agreements is seven years from September 27, 2022; Lightbridge reimburses most expenses.

## SEC filing metadata
- accession: 0001477932-25-001890
- form_type: 8-K
- ticker: LTBR
- cik: 0001084554
- company_name: LIGHTBRIDGE Corp
- filed_at: 2025-03-21T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 1.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1084554/000147793225001890/0001477932-25-001890-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1084554/000147793225001890/ltbr_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001477932-25-001890
- JSON: https://secwatch.observer/filing/0001477932-25-001890.json
- Plain text: https://secwatch.observer/filing/0001477932-25-001890.txt

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