---
title: "89bio, Inc. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/fa1b6064-3e01-5af9-bd0a-e0ea21121ec3
json: https://whiteintel.dev/api/public/dossier/fa1b6064-3e01-5af9-bd0a-e0ea21121ec3
identifier: sec:0001785173
jurisdiction: US
risk: High
source: WhiteIntel corporate-ownership graph
---

# 89bio, Inc.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001785173`  
**Risk level:** High  
**Canonical dossier:** https://whiteintel.dev/entity/fa1b6064-3e01-5af9-bd0a-e0ea21121ec3  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/fa1b6064-3e01-5af9-bd0a-e0ea21121ec3  

## Ownership & control

### Owners / controllers

- **RA Capital Healthcare Fund LP** (10% owner) — https://whiteintel.dev/entity/1ef87f50-8834-5b13-90e0-d0c89201e433
- **RA Capital Nexus Fund, L.P.** (10% owner) — https://whiteintel.dev/entity/95670ca6-c435-502f-9954-17938936934a
- **Kolchinsky Peter** (10% owner) — https://whiteintel.dev/entity/33b3d577-9112-5c40-8586-a27dae0c41d4
- **RA CAPITAL MANAGEMENT, L.P.** (10% owner) — https://whiteintel.dev/entity/8d389c12-372a-5782-93b3-6f36e07414df
- **Shah Rajeev M.** (10% owner) — https://whiteintel.dev/entity/fe8d7e01-c2f7-55ac-b8ce-308630592b3b
- **Kolchinsky Peter** (10% owner) — https://whiteintel.dev/entity/33b3d577-9112-5c40-8586-a27dae0c41d4
- **Shah Rajeev M.** (10% owner) — https://whiteintel.dev/entity/fe8d7e01-c2f7-55ac-b8ce-308630592b3b
- **RA Capital Healthcare Fund LP** (10% owner) — https://whiteintel.dev/entity/1ef87f50-8834-5b13-90e0-d0c89201e433
- **RA CAPITAL MANAGEMENT, L.P.** (10% owner) — https://whiteintel.dev/entity/8d389c12-372a-5782-93b3-6f36e07414df
- **RA Capital Nexus Fund, L.P.** (10% owner) — https://whiteintel.dev/entity/95670ca6-c435-502f-9954-17938936934a
- **RA CAPITAL MANAGEMENT, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/8d389c12-372a-5782-93b3-6f36e07414df
- **Kolchinsky Peter** (tenpercentowner) — https://whiteintel.dev/entity/33b3d577-9112-5c40-8586-a27dae0c41d4
- **RA Capital Nexus Fund, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/95670ca6-c435-502f-9954-17938936934a
- **RA Capital Healthcare Fund LP** (tenpercentowner) — https://whiteintel.dev/entity/1ef87f50-8834-5b13-90e0-d0c89201e433
- **Shah Rajeev M.** (tenpercentowner) — https://whiteintel.dev/entity/fe8d7e01-c2f7-55ac-b8ce-308630592b3b
- **GRUNBERG GREGORY** (tenpercentowner) — https://whiteintel.dev/entity/4fe68736-314d-57cb-a495-2f724058c3ad
- **ORBIMED ADVISORS ISRAEL II LTD** (tenpercentowner) — https://whiteintel.dev/entity/454a1f8a-5117-55aa-9804-1fcfa06519f2
- **ORBIMED ISRAEL GP II, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/7e720c1f-2995-5175-8f76-7259048a47f4
- **OrbiMed Capital GP VI LLC** (tenpercentowner) — https://whiteintel.dev/entity/2f169f5c-35ce-5146-bdd0-38bddb679a8e
- **ORBIMED ADVISORS LLC** (tenpercentowner) — https://whiteintel.dev/entity/4fe8d3ec-3487-5b04-877d-c8ddaf0718be
- **NASCHITZ ANAT** (tenpercentowner) — https://whiteintel.dev/entity/3671b57a-6df8-53dd-a18d-5cb72b20162f
- **ENRIGHT PATRICK G** (tenpercentowner) — https://whiteintel.dev/entity/72567e3a-3eb2-5a7f-b14f-75c71d8b8f7f
- **LONGITUDE VENTURE PARTNERS III, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/2c9bb5d8-4154-57d0-987c-6e6e85ec9c3d
- **LONGITUDE CAPITAL PARTNERS III, LLC** (tenpercentowner) — https://whiteintel.dev/entity/8241c50f-dff4-5711-be37-e456d3f18633
- **TAMMENOMS BAKKER JULIET** (tenpercentowner) — https://whiteintel.dev/entity/f259a46b-9160-5068-bda6-ebc8b0a595b2
- **PONTIFAX (ISRAEL) V, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/36e0c981-d0a6-5f50-bb06-f296571b3fae
- **PONTIFAX LATE STAGE GP LTD.** (tenpercentowner) — https://whiteintel.dev/entity/421e9c83-bcc3-5c84-a677-0fcd1ba70f15
- **PONTIFAX (CHINA) V, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/a1caabd3-bdd6-5e90-b354-5874352694c0
- **PONTIFAX 5 G.P. L.P.** (tenpercentowner) — https://whiteintel.dev/entity/125de0f8-18a9-5a69-96f0-76fb06e89600
- **PONTIFAX MANAGEMENT 4 G.P. (2015) LTD.** (tenpercentowner) — https://whiteintel.dev/entity/24205e1f-1e1d-58e4-a91c-795e9407748a
- **PONTIFAX LATE STAGE FUND L.P.** (tenpercentowner) — https://whiteintel.dev/entity/2fbd5254-5649-5c77-b3c8-005ed287a57e
- **KARIV TOMER** (tenpercentowner) — https://whiteintel.dev/entity/ffdbbbd1-9aa2-58e4-b161-331a62ade2fa
- **PONTIFAX (CAYMAN) V, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/4d5ed8b2-1ab8-5435-8754-18762967361b

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

A **83-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 **89bio, Inc.**. Human view: https://whiteintel.dev/entity/fa1b6064-3e01-5af9-bd0a-e0ea21121ec3 · Structured JSON: https://whiteintel.dev/api/public/dossier/fa1b6064-3e01-5af9-bd0a-e0ea21121ec3._

_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"._