---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-002534"
form_type: "8-K"
ticker: "LAC"
cik: "0001966983"
company_name: "LITHIUM AMERICAS CORP."
filed_at: "2025-01-07T23:59:59+00:00"
generated_at: "2026-05-28T09:21:15.144937+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "medium"
source: SEC EDGAR
---

# Lithium Americas announces increased mineral resource and reserve at Thacker Pass

## Summary
- Press release announces increased mineral resource and reserve estimate for Thacker Pass lithium project in Nevada.
- Thacker Pass is a joint venture with General Motors; LAC holds 62%, GM 38%.
- All major federal, state and local permits for Phase 1 achieved; pre-construction activities advanced.
- Technical reports filed under NI 43-101 and S-K 1300 with effective date December 31, 2024.

## SEC filing metadata
- accession: 0001193125-25-002534
- form_type: 8-K
- ticker: LAC
- cik: 0001966983
- company_name: LITHIUM AMERICAS CORP.
- filed_at: 2025-01-07T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: medium
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1966983/000119312525002534/0001193125-25-002534-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1966983/000119312525002534/d909276d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-002534
- JSON: https://secwatch.observer/filing/0001193125-25-002534.json
- Plain text: https://secwatch.observer/filing/0001193125-25-002534.txt

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