---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-286999"
form_type: "8-K"
ticker: "FEAM"
cik: "0001888654"
company_name: "5E Advanced Materials, Inc."
filed_at: "2025-11-19T23:59:59+00:00"
generated_at: "2026-05-16T18:32:58.855856+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# 5E Advanced Materials reports 61% increase in measured+indicated boric acid to 28.3M tons, 54% increase in LCE

## Summary
- Total measured+indicated boric acid increased 61% to 28.3 million tons at 8.09% B2O3 grade.
- Measured boric acid up 170% to 9.1M tons; indicated up 35% to 19.2M tons.
- Measured+indicated lithium carbonate equivalent (LCE) up 54% to 328K tons at 0.17% grade.
- Implied resource life of 217 years at first-phase production rate of 130,000 short tons per annum.
- Upgrade driven by additional federal lode claims staked in July/August 2025; mineral reserves unchanged.

## SEC filing metadata
- accession: 0001193125-25-286999
- form_type: 8-K
- ticker: FEAM
- cik: 0001888654
- company_name: 5E Advanced Materials, Inc.
- filed_at: 2025-11-19T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1888654/000119312525286999/0001193125-25-286999-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1888654/000119312525286999/feam-20251115.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-286999
- JSON: https://secwatch.observer/filing/0001193125-25-286999.json
- Plain text: https://secwatch.observer/filing/0001193125-25-286999.txt

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