---
schema_version: "secwatch.filing_event.v1"
accession: "0001816431-25-000048"
form_type: "8-K"
ticker: "QSI"
cik: "0001816431"
company_name: "Quantum-Si Inc"
filed_at: "2025-08-05T23:59:59+00:00"
generated_at: "2026-05-17T20:55:20.674582+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Quantum-Si Q2 revenue $591K, net loss $28.8M; raises $50M cash runway

## Summary
- Q2 2025 revenue $591K; gross margin 59%; net loss $28.8M vs $23.1M prior year.
- Six-month 2025 revenue $1.4M, up 33% YoY; adjusted EBITDA -$22.2M in Q2.
- Raised $50M in registered direct offering; cash runway extended into Q2 2028.
- Proteus platform on track; v4 Sequencing Kit launch expected Q3 2025.
- NIH funding headwinds slowed capital sales; new instrument acquisition options launched.

## SEC filing metadata
- accession: 0001816431-25-000048
- form_type: 8-K
- ticker: QSI
- cik: 0001816431
- company_name: Quantum-Si Inc
- filed_at: 2025-08-05T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1816431/000181643125000048/0001816431-25-000048-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1816431/000181643125000048/qsi-20250805.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001816431-25-000048
- JSON: https://secwatch.observer/filing/0001816431-25-000048.json
- Plain text: https://secwatch.observer/filing/0001816431-25-000048.txt

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