---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-26-002545"
form_type: "8-K"
ticker: "ARCI"
cik: "0002083910"
company_name: "Archimedes Tech SPAC Partners III Co."
filed_at: "2026-01-30T23:59:59+00:00"
generated_at: "2026-05-16T06:09:23.090649+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Archimedes Tech SPAC III closes $276M IPO, deposits $276M in trust account

## Summary
- IPO of 27.6M units at $10.00/unit, including full over-allotment; gross proceeds $276M.
- Private placement of 762K units at $10.00/unit to sponsor and BTIG; gross proceeds $7.62M.
- $276M held in trust account for public shareholders; $10.00 per public share.
- Working capital of $1.32M as of Jan 26, 2026; cash $1.27M outside trust.
- Company has 24 months from IPO to complete a business combination.

## SEC filing metadata
- accession: 0001437749-26-002545
- form_type: 8-K
- ticker: ARCI
- cik: 0002083910
- company_name: Archimedes Tech SPAC Partners III Co.
- filed_at: 2026-01-30T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2083910/000143774926002545/0001437749-26-002545-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2083910/000143774926002545/aiii20260129_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-26-002545
- JSON: https://secwatch.observer/filing/0001437749-26-002545.json
- Plain text: https://secwatch.observer/filing/0001437749-26-002545.txt

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