---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-004012"
form_type: "8-K"
ticker: "ATII"
cik: "0002028516"
company_name: "Archimedes Tech SPAC Partners II Co."
filed_at: "2025-02-14T23:59:59+00:00"
generated_at: "2026-05-26T21:44:03.859108+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Archimedes Tech SPAC Partners II closes $230M IPO, including full over-allotment

## Summary
- Offered 23M units at $10.00 each; gross proceeds $230M from IPO plus $8.4M private placement.
- Each unit consists of one ordinary share plus half a warrant exercisable at $11.50 per share.
- Trust account holds $231.15M, including $8.05M deferred underwriting commissions.
- Sponsor purchased 530k Private Units; BTIG purchased 310k Private Units at $10.00 each.
- Units trade on Nasdaq under ATIIU; ordinary shares and warrants will separately trade as ATII and ATIIW.

## SEC filing metadata
- accession: 0001437749-25-004012
- form_type: 8-K
- ticker: ATII
- cik: 0002028516
- company_name: Archimedes Tech SPAC Partners II Co.
- filed_at: 2025-02-14T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 1.01, 3.02, 5.03, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2028516/000143774925004012/0001437749-25-004012-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2028516/000143774925004012/atii20250211_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-004012
- JSON: https://secwatch.observer/filing/0001437749-25-004012.json
- Plain text: https://secwatch.observer/filing/0001437749-25-004012.txt

## Key facts
- Governance Changes
  Archimedes Tech SPAC Partners II Co.: Adopted Amended and Restated Memorandum and Articles of Association in connection with the IPO (effective 2025-02-10).
  - Change: charter amendment
  - Effective: 2025-02-10
  source text: On February 10, 2025, and in connection with the IPO, the Company adopted its Amended and Restated Memorandum and Articles of Association.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2028516/000143774925004012/0001437749-25-004012-index.htm

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