---
title: "MEDICINES CO /DE — Ownership Dossier"
canonical: https://whiteintel.dev/entity/37e9c771-3546-51bb-b16f-77f508c63abd
json: https://whiteintel.dev/api/public/dossier/37e9c771-3546-51bb-b16f-77f508c63abd
identifier: sec:0001113481
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MEDICINES CO /DE

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001113481`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/37e9c771-3546-51bb-b16f-77f508c63abd  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/37e9c771-3546-51bb-b16f-77f508c63abd  

## Ownership & control

### Owners / controllers

- **DEERFIELD INTERNATIONAL LTD** (tenpercentownerother) — https://whiteintel.dev/entity/1ca1b752-35fb-56fa-a782-c75b428a7870
- **Flynn James E** (tenpercentownerother) — https://whiteintel.dev/entity/e41579a6-248b-5454-a089-66f9a7c69ae7
- **DEERFIELD CAPITAL LP** (tenpercentownerother) — https://whiteintel.dev/entity/5f3c11a7-c53a-58c1-ba4f-1ad86e04c791
- **DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)** (tenpercentownerother) — https://whiteintel.dev/entity/31a5caa4-05d6-5739-b04b-16a6222da289
- **DEERFIELD PARTNERS, L.P.** (tenpercentownerother) — https://whiteintel.dev/entity/65f05e41-ef95-517f-9b59-b6fc681aa121

### Holdings / subsidiaries

- **CEMPRA HOLDINGS, LLC** (tenpercentowner) — https://whiteintel.dev/entity/2a74e8ec-d642-50de-81d1-e06d8e29be0e

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

A **43-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.

## 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 **MEDICINES CO /DE** — https://whiteintel.dev/entity/37e9c771-3546-51bb-b16f-77f508c63abd · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MEDICINES CO /DE**. Human view: https://whiteintel.dev/entity/37e9c771-3546-51bb-b16f-77f508c63abd · Structured JSON: https://whiteintel.dev/api/public/dossier/37e9c771-3546-51bb-b16f-77f508c63abd._

_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"._