---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-26-009540"
form_type: "8-K"
ticker: "LBSR"
cik: "0001172178"
company_name: "LIBERTY STAR URANIUM & METALS CORP."
filed_at: "2026-03-10T23:59:59+00:00"
generated_at: "2026-05-15T15:31:28.426365+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Liberty Star staks 13 new claims; now 4th largest mineral holder in Arizona

## Summary
- Staked 13 new mining claims covering ~11.18 sq mi in Tombstone Mining District.
- Total mineralized footprint now ~31.49 sq mi; ranks 4th largest in Arizona.
- Claims host critical minerals, copper, molybdenum, gold (Red Rock Canyon), and REEs.
- Chairman Pete O'Heeron cites bonanza-grade gold values and robust geophysical signatures.
- Expansion preserves future optionality for open-pit and underground development.

## SEC filing metadata
- accession: 0001493152-26-009540
- form_type: 8-K
- ticker: LBSR
- cik: 0001172178
- company_name: LIBERTY STAR URANIUM & METALS CORP.
- filed_at: 2026-03-10T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1172178/000149315226009540/0001493152-26-009540-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1172178/000149315226009540/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-26-009540
- JSON: https://secwatch.observer/filing/0001493152-26-009540.json
- Plain text: https://secwatch.observer/filing/0001493152-26-009540.txt

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