---
title: "Arroyo Santiago — Ownership Dossier"
canonical: https://whiteintel.dev/entity/0ee09caa-ce54-5544-8397-c4aa8d4716fd
json: https://whiteintel.dev/api/public/dossier/0ee09caa-ce54-5544-8397-c4aa8d4716fd
identifier: sec:0001706857
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Arroyo Santiago

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001706857`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/0ee09caa-ce54-5544-8397-c4aa8d4716fd  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/0ee09caa-ce54-5544-8397-c4aa8d4716fd  

## Ownership & control

### Holdings / subsidiaries

- **BICYCLE THERAPEUTICS PLC** (officer) — https://whiteintel.dev/entity/0acb5729-b5ad-50bb-a9be-f3ce653d4a67
- **BICYCLE THERAPEUTICS PLC** (officer) — https://whiteintel.dev/entity/0acb5729-b5ad-50bb-a9be-f3ce653d4a67
- **Fulcrum Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/df229cb1-062c-55a0-8db0-ee10d8298b76
- **MARINUS PHARMACEUTICALS, INC.** (director) — https://whiteintel.dev/entity/20b6d5a3-9c75-5cba-9939-08c1df6c05db
- **MOMENTA PHARMACEUTICALS INC** (officer) — https://whiteintel.dev/entity/98a7f107-d1cd-5231-8d2f-f4a0abe32d08

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Arroyo Santiago**. Human view: https://whiteintel.dev/entity/0ee09caa-ce54-5544-8397-c4aa8d4716fd · Structured JSON: https://whiteintel.dev/api/public/dossier/0ee09caa-ce54-5544-8397-c4aa8d4716fd._

_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"._