---
schema_version: "secwatch.filing_event.v1"
accession: "0001140361-25-004746"
form_type: "8-K"
ticker: "AACB"
cik: "0002034334"
company_name: "Artius II Acquisition Inc."
filed_at: "2025-02-14T23:59:59+00:00"
generated_at: "2026-05-26T21:44:05.228715+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Artius II Acquisition closes $220M IPO including over-allotment; tontine structure included

## Summary
- Priced 22M units at $10.00 each, yielding $220M gross proceeds; over-allotment partially exercised for 2M units.
- Each unit consists of one Class A share, one right (1/10 share), and one contingent right for 1M distributable shares (tontine).
- Sponsor surrendered 250K Class B shares for no consideration; private placement of 175K units to sponsor raised $1.75M.
- Net $220M placed in trust account; funds released only upon business combination, redemption, or charter amendment.
- Units (AACBU) began trading Feb. 13, 2025; separately, shares (AACB) and rights (AACBR) will list.

## SEC filing metadata
- accession: 0001140361-25-004746
- form_type: 8-K
- ticker: AACB
- cik: 0002034334
- company_name: Artius II Acquisition Inc.
- filed_at: 2025-02-14T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2034334/000114036125004746/0001140361-25-004746-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2034334/000114036125004746/ny20034162x22_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001140361-25-004746
- JSON: https://secwatch.observer/filing/0001140361-25-004746.json
- Plain text: https://secwatch.observer/filing/0001140361-25-004746.txt

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