---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-26-020152"
form_type: "8-K"
ticker: "CGCT"
cik: "0002049662"
company_name: "Cartesian Growth Corp III"
filed_at: "2026-02-26T23:59:59+00:00"
generated_at: "2026-05-15T23:52:36.423986+00:00"
event_type: "other_material"
sentiment: "positive"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Factorial signs non-binding MOU with Philenergy to scale Solstice solid-state battery manufacturing

## Summary
- Factorial (target of Cartesian III SPAC merger) and Philenergy (South Korea) signed MOU for manufacturing collaboration.
- Solstice platform claims up to 80% higher energy density vs. Li-ion; stable operation up to 90°C.
- MOU non-binding; collaboration subject to definitive agreements and customary conditions.
- Philenergy brings automated laser notching, precision stacking, and winding tech to Factorial's dry cathode architecture.
- Cartesian III and Factorial announced merger in Dec 2025; transaction pending shareholder approval.

## SEC filing metadata
- accession: 0001104659-26-020152
- form_type: 8-K
- ticker: CGCT
- cik: 0002049662
- company_name: Cartesian Growth Corp III
- filed_at: 2026-02-26T23:59:59+00:00
- event_type: other_material
- sentiment: positive
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2049662/000110465926020152/0001104659-26-020152-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2049662/000110465926020152/tm267345d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-26-020152
- JSON: https://secwatch.observer/filing/0001104659-26-020152.json
- Plain text: https://secwatch.observer/filing/0001104659-26-020152.txt

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