---
schema_version: "secwatch.filing_event.v1"
accession: "0001816431-25-000060"
form_type: "8-K"
ticker: "QSI"
cik: "0001816431"
company_name: "Quantum-Si Inc"
filed_at: "2025-09-26T23:59:59+00:00"
generated_at: "2026-05-17T05:35:39.677008+00:00"
event_type: "other_material"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Quantum-Si pays $11M to settle lease litigation and terminate New Haven lease

## Summary
- Settles lawsuit with landlord Winchester Office LLC; terminates lease at 115 Munson St, New Haven effective Sept 23, 2025.
- Total settlement payment of $11M; net of $573k security deposit forfeiture and $273k Sep rent credit, cash payment $10.15M due Sep 26.
- Lease originally ran to July 2032; early exit removes future rent obligations but requires large near-term cash outlay.
- Confidentiality and non-disparagement terms agreed; company retains right to disclose to SEC as required.

## SEC filing metadata
- accession: 0001816431-25-000060
- form_type: 8-K
- ticker: QSI
- cik: 0001816431
- company_name: Quantum-Si Inc
- filed_at: 2025-09-26T23:59:59+00:00
- event_type: other_material
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 1.02, 2.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1816431/000181643125000060/0001816431-25-000060-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1816431/000181643125000060/qsi-20250923.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001816431-25-000060
- JSON: https://secwatch.observer/filing/0001816431-25-000060.json
- Plain text: https://secwatch.observer/filing/0001816431-25-000060.txt

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