---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-26-012949"
form_type: "8-K"
ticker: "ATII"
cik: "0002028516"
company_name: "Archimedes Tech SPAC Partners II Co."
filed_at: "2026-04-22T23:59:59+00:00"
generated_at: "2026-05-15T04:56:59.701753+00:00"
event_type: "m_and_a"
sentiment: "positive"
materiality_score: 0.8
calibrated_materiality_score: 0.8
confidence: "high"
source: SEC EDGAR
---

# Archimedes Tech SPAC Partners II to merge with Forge Nano at $1.2B pre-money valuation

## Summary
- Forge Nano valued at $1.2B pre-money; combined pro forma equity value ~$1.595B.
- Up to $342M gross proceeds from trust ($242M) and $100M PIPE.
- Platform targets $359B+ TAM by 2034; 200+ patents; $84M binding off-take agreements.
- Strategic investors include GM Ventures, Hanwha, Volkswagen, Air Liquide, LG Tech Ventures.
- Closing expected H2 2026; post-close tickers 'NANO' and 'NANOW' on Nasdaq.

## SEC filing metadata
- accession: 0001437749-26-012949
- form_type: 8-K
- ticker: ATII
- cik: 0002028516
- company_name: Archimedes Tech SPAC Partners II Co.
- filed_at: 2026-04-22T23:59:59+00:00
- event_type: m_and_a
- sentiment: positive
- materiality_score: 0.8
- calibrated_materiality_score: 0.8
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2028516/000143774926012949/0001437749-26-012949-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2028516/000143774926012949/atii20260421_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-26-012949
- JSON: https://secwatch.observer/filing/0001437749-26-012949.json
- Plain text: https://secwatch.observer/filing/0001437749-26-012949.txt

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