---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-25-012382"
form_type: "8-K"
ticker: "AACB"
cik: "0002034334"
company_name: "Artius II Acquisition Inc."
filed_at: "2025-04-04T23:59:59+00:00"
generated_at: "2026-05-23T21:35:15.909319+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Artius II Acquisition announces separate trading of shares and rights from units starting April 7

## Summary
- 22,000,000 units sold at $10/unit in IPO, generating $220M gross proceeds.
- Separate trading of Class A ordinary shares (AACB) and rights (AACBR) begins April 7, 2025.
- Units not separated will continue trading as AACBU on Nasdaq.
- Holders must contact Continental Stock Transfer to split units.

## SEC filing metadata
- accession: 0001140361-25-012382
- form_type: 8-K
- ticker: AACB
- cik: 0002034334
- company_name: Artius II Acquisition Inc.
- filed_at: 2025-04-04T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2034334/000114036125012382/0001140361-25-012382-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2034334/000114036125012382/ef20046903_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-25-012382
- JSON: https://secwatch.observer/filing/0001140361-25-012382.json
- Plain text: https://secwatch.observer/filing/0001140361-25-012382.txt

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