---
title: "Biogen Inc. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/a7c6b938-aeea-4d06-89d2-9a3faf8acf52
json: https://whiteintel.dev/api/public/dossier/a7c6b938-aeea-4d06-89d2-9a3faf8acf52
identifier: gb-coh:33-0112644
jurisdiction: GB
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Biogen Inc.

**Type:** Company  
**Jurisdiction:** [GB](https://whiteintel.dev/jurisdictions/gb)  
**Identifier:** `gb-coh:33-0112644`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/a7c6b938-aeea-4d06-89d2-9a3faf8acf52  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/a7c6b938-aeea-4d06-89d2-9a3faf8acf52  

## Ownership & control

### Holdings / subsidiaries

- **SILVER ACQUISITION CO LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/d9aa22fb-43a8-5129-912a-90b7de4b4c8d
- **BIOGEN IDEC LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/89d61ab2-8bfe-5107-b5ce-2d3d984ac95b
- **BIOGEN IDEC RESEARCH LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/9930b294-8d14-545f-bf90-39b6c4572985
- **CONVERGENCE PHARMACEUTICALS LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/6f334e08-873f-564c-be30-21f199671d7f
- **REATA UK LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/52f95ade-db45-596b-a998-acd29a97e98b
- **TUNGSTEN BIDCO LIMITED** (beneficial owner) — 87.5% — https://whiteintel.dev/entity/8c511b74-36dc-5e6a-9597-0b82869e0961

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **Biogen Inc.** — https://whiteintel.dev/entity/a7c6b938-aeea-4d06-89d2-9a3faf8acf52 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Biogen Inc.**. Human view: https://whiteintel.dev/entity/a7c6b938-aeea-4d06-89d2-9a3faf8acf52 · Structured JSON: https://whiteintel.dev/api/public/dossier/a7c6b938-aeea-4d06-89d2-9a3faf8acf52._

_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"._