---
schema_version: "secwatch.filing_event.v1"
accession: "0001816431-25-000074"
form_type: "8-K"
ticker: "QSI"
cik: "0001816431"
company_name: "Quantum-Si Inc"
filed_at: "2025-12-29T23:59:59+00:00"
generated_at: "2026-05-16T12:07:39.225300+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.2
confidence: "high"
source: SEC EDGAR
---

# Quantum-Si Incorporated posts updated corporate presentation on December 29, 2025

## Summary
- Company posted updated corporate presentation on its website on December 29, 2025.
- Presentation is furnished as Exhibit 99.1 to this Current Report on Form 8-K.
- Presentation slides available on 'Investors' section at https://ir.quantum-si.com.
- Presentation provides updates and summaries of Quantum-Si's business to investment community.

## SEC filing metadata
- accession: 0001816431-25-000074
- form_type: 8-K
- ticker: QSI
- cik: 0001816431
- company_name: Quantum-Si Inc
- filed_at: 2025-12-29T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.2
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1816431/000181643125000074/0001816431-25-000074-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1816431/000181643125000074/qsi-20251229.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001816431-25-000074
- JSON: https://secwatch.observer/filing/0001816431-25-000074.json
- Plain text: https://secwatch.observer/filing/0001816431-25-000074.txt

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