---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-26-079130"
form_type: "8-K"
ticker: "ARCI"
cik: "0002083910"
company_name: "Archimedes Tech SPAC Partners III Co."
filed_at: "2026-07-17T19:32:13+00:00"
generated_at: "2026-07-17T19:33:08.822622+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.35
calibrated_materiality_score: 0.35
confidence: "high"
source: SEC EDGAR
---

# Archimedes Tech SPAC Partners III appoints Stephen N. Cannon as Class II director

## Summary
- Stephen N. Cannon appointed as Class II director effective July 13, 2026.
- Cannon also joins audit, compensation, and nominating committees; deemed independent.
- He currently serves as director of Archimedes Tech SPAC Partners II Co. and was CEO of Archimedes I (SoundHound AI merger).
- Cannon has extensive SPAC leadership experience including CEO/CFO roles at multiple blank-check companies.

## SEC filing metadata
- accession: 0001213900-26-079130
- form_type: 8-K
- ticker: ARCI
- cik: 0002083910
- company_name: Archimedes Tech SPAC Partners III Co.
- filed_at: 2026-07-17T19:32:13+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.35
- calibrated_materiality_score: 0.35
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2083910/000121390026079130/0001213900-26-079130-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2083910/000121390026079130/ea0295111-8k_archimedes3.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-26-079130
- JSON: https://secwatch.observer/filing/0001213900-26-079130.json
- Plain text: https://secwatch.observer/filing/0001213900-26-079130.txt

## Key facts
- Executive change
  Stephen N. Cannon was appointed as Class II director at Archimedes Tech SPAC Partners III Co..
  - Action: appointed
  - Role: Class II director
  source text: On July 13, 2026, the board of directors (the “Board”) of Archimedes Tech SPAC Partners III Co. (the “Company”) appointed Stephen N. Cannon as a Class II director of the Board, effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/2083910/000121390026079130/0001213900-26-079130-index.htm

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