---
title: "Quantum-Si Inc — Ownership Dossier"
canonical: https://whiteintel.dev/entity/006f0034-8317-5257-806e-c35ffa063303
json: https://whiteintel.dev/api/public/dossier/006f0034-8317-5257-806e-c35ffa063303
identifier: sec:0001816431
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# Quantum-Si Inc

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001816431`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/006f0034-8317-5257-806e-c35ffa063303  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/006f0034-8317-5257-806e-c35ffa063303  

## Ownership & control

### Owners / controllers

- **ROTHBERG JONATHAN M** (tenpercentowner) — https://whiteintel.dev/entity/611a5167-2267-54a3-ab53-09baf839bd41
- **4C HOLDINGS I, LLC** (tenpercentowner) — https://whiteintel.dev/entity/a7c0eec7-8185-5568-890e-a12a45f021d2
- **2012 JMR TRUST COMMON LLC** (tenpercentowner) — https://whiteintel.dev/entity/2e6063d2-ec9e-5562-a6ac-c26be475d504
- **HIGHCAPE CAPITAL ACQUISITION LLC** (tenpercentownerother) — https://whiteintel.dev/entity/f182a431-2467-5aa1-bc55-d4ff67a34edf
- **Zuga Matt** (tenpercentowner) — https://whiteintel.dev/entity/3a07ce2c-4a74-5b0e-9ea1-d91b36188413

### UBO chain (walk to the ultimate owner)

A **47-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Quantum-Si Inc**. Human view: https://whiteintel.dev/entity/006f0034-8317-5257-806e-c35ffa063303 · Structured JSON: https://whiteintel.dev/api/public/dossier/006f0034-8317-5257-806e-c35ffa063303._

_Risk levels are heuristic investigative leads, not legal determinations of beneficial ownership. Every claim carries a source; an absent edge means "not yet observed in current sources", not "does not exist"._