---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-281713"
form_type: "8-K"
ticker: "GIW"
cik: "0002080019"
company_name: "GigCapital8 Corp."
filed_at: "2026-06-25T10:00:32+00:00"
generated_at: "2026-06-25T10:05:26.109615+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# SPAC GigCapital8 targets quantum platform Quantisimo at $575M EV, plans additional acquisitions to $2B

## Summary
- Non-binding LOI between GigCapital8 (SPAC) and Quantisimo (JV of WISeKey/SEALSQ) for business combination.
- Pre-money enterprise value of Quantisimo ~$575M; plans to reach $2B via up to 5 additional quantum acquisitions.
- Expected close Q1 2027, subject to due diligence, definitive agreements, shareholder & regulatory approvals.
- SEALSQ to contribute selected assets from SealQuantum.com portfolio to Quantisimo.
- Transaction supported by recent Executive Order on quantum innovation signed June 22, 2026.

## SEC filing metadata
- accession: 0001193125-26-281713
- form_type: 8-K
- ticker: GIW
- cik: 0002080019
- company_name: GigCapital8 Corp.
- filed_at: 2026-06-25T10:00:32+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/2080019/000119312526281713/0001193125-26-281713-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/2080019/000119312526281713/giwwu-20260625.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-281713
- JSON: https://secwatch.observer/filing/0001193125-26-281713.json
- Plain text: https://secwatch.observer/filing/0001193125-26-281713.txt

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