---
title: "EcoR1 Capital, LLC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/5197a8ea-a950-5bff-9f38-fe74782a4027
json: https://whiteintel.dev/api/public/dossier/5197a8ea-a950-5bff-9f38-fe74782a4027
identifier: sec:0001587114
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# EcoR1 Capital, LLC

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001587114`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/5197a8ea-a950-5bff-9f38-fe74782a4027  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/5197a8ea-a950-5bff-9f38-fe74782a4027  

## Ownership & control

### Holdings / subsidiaries

- **Zymeworks Inc.** (10% owner) — https://whiteintel.dev/entity/2a785392-54da-548f-952e-9497a14ea592
- **Zymeworks Inc.** (10% owner) — https://whiteintel.dev/entity/2a785392-54da-548f-952e-9497a14ea592
- **Zymeworks Inc.** (10% owner) — https://whiteintel.dev/entity/2a785392-54da-548f-952e-9497a14ea592
- **Zymeworks Inc.** (10% owner) — https://whiteintel.dev/entity/2a785392-54da-548f-952e-9497a14ea592
- **Zymeworks Inc.** (10% owner) — https://whiteintel.dev/entity/2a785392-54da-548f-952e-9497a14ea592
- **Zymeworks Inc.** (10% owner) — https://whiteintel.dev/entity/2a785392-54da-548f-952e-9497a14ea592
- **Zymeworks Inc.** (10% owner) — https://whiteintel.dev/entity/2a785392-54da-548f-952e-9497a14ea592
- **ANAPTYSBIO, INC** (10% owner) — https://whiteintel.dev/entity/d5e7f599-7eb4-5864-8e4a-7194dc20c2de
- **Zymeworks Inc.** (10% owner) — https://whiteintel.dev/entity/2a785392-54da-548f-952e-9497a14ea592
- **BIOPHARMA COMPANY, INC.** (tenpercentowner) — https://whiteintel.dev/entity/27154c21-80ab-59b6-bcab-863cd27fee62
- **Atara Biotherapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/8a5507e4-9c1c-5edd-82c9-7075a400f0ab
- **AKTIS ONCOLOGY, INC.** (tenpercentowner) — https://whiteintel.dev/entity/6782038c-0829-5ef3-9667-77e22dcc26b2

…and **25** more subsidiaries/holdings. Resolve the full list with `get_dossier` on the WhiteIntel MCP (`npx -y @whiteintel/mcp-server`) 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 **EcoR1 Capital, LLC** — https://whiteintel.dev/entity/5197a8ea-a950-5bff-9f38-fe74782a4027 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **EcoR1 Capital, LLC**. Human view: https://whiteintel.dev/entity/5197a8ea-a950-5bff-9f38-fe74782a4027 · Structured JSON: https://whiteintel.dev/api/public/dossier/5197a8ea-a950-5bff-9f38-fe74782a4027._

_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"._