---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-25-003545"
form_type: "8-K"
ticker: "PUBC"
cik: "0001575858"
company_name: "Purebase Corp"
filed_at: "2025-01-24T23:59:59+00:00"
generated_at: "2026-05-27T10:58:59.254726+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Purebase discloses mineral lease assignment from USMC never effectuated; rights remain with USMC

## Summary
- Purebase previously reported acquiring mining rights to ~2,500 acres in Esmeralda County, NV via assignment from U.S. Mine Corp. (USMC).
- Company now aware the assignment was not effectuated; lease rights and obligations remain with USMC, a significant stockholder.
- Purebase had assumed annual lease payments and development costs; implications for title and liability are uncertain.
- Disclosure raises material questions about the company's control of the Esmeralda Project and ongoing lease commitments.

## SEC filing metadata
- accession: 0001493152-25-003545
- form_type: 8-K
- ticker: PUBC
- cik: 0001575858
- company_name: Purebase Corp
- filed_at: 2025-01-24T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1575858/000149315225003545/0001493152-25-003545-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1575858/000149315225003545/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-25-003545
- JSON: https://secwatch.observer/filing/0001493152-25-003545.json
- Plain text: https://secwatch.observer/filing/0001493152-25-003545.txt

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