---
title: "Septerna, Inc. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/73a09cf2-416c-5ce7-8f3a-75597df4840f
json: https://whiteintel.dev/api/public/dossier/73a09cf2-416c-5ce7-8f3a-75597df4840f
identifier: sec:0001984086
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# Septerna, Inc.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001984086`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/73a09cf2-416c-5ce7-8f3a-75597df4840f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/73a09cf2-416c-5ce7-8f3a-75597df4840f  

## Ownership & control

### Owners / controllers

- **Third Rock Ventures GP V, LP** (10% owner) — https://whiteintel.dev/entity/d2ded8f9-0ff2-59f2-965e-d52f10b49638
- **Third Rock Ventures V, L.P.** (10% owner) — https://whiteintel.dev/entity/cae55914-6efa-5074-bed8-1eb516719bf2
- **TRV GP VI, LLC** (10% owner) — https://whiteintel.dev/entity/ca36d732-7402-537a-8f13-7ec93fbed3e8
- **Third Rock Ventures GP VI, L.P.** (10% owner) — https://whiteintel.dev/entity/07895bdb-91e4-568d-9cee-29c27dc89b23
- **Third Rock Ventures VI, L.P.** (10% owner) — https://whiteintel.dev/entity/e040295f-69f7-5db4-8439-423fa11de38d
- **TRV GP V, LLC** (10% owner) — https://whiteintel.dev/entity/8f2bbeb8-07b5-5f32-aa9d-7e4c46c5ab6f
- **Third Rock Ventures GP V, LP** (10% owner) — https://whiteintel.dev/entity/d2ded8f9-0ff2-59f2-965e-d52f10b49638
- **TRV GP V, LLC** (10% owner) — https://whiteintel.dev/entity/8f2bbeb8-07b5-5f32-aa9d-7e4c46c5ab6f
- **TRV GP VI, LLC** (10% owner) — https://whiteintel.dev/entity/ca36d732-7402-537a-8f13-7ec93fbed3e8
- **Third Rock Ventures GP VI, L.P.** (10% owner) — https://whiteintel.dev/entity/07895bdb-91e4-568d-9cee-29c27dc89b23
- **Third Rock Ventures VI, L.P.** (10% owner) — https://whiteintel.dev/entity/e040295f-69f7-5db4-8439-423fa11de38d
- **Third Rock Ventures V, L.P.** (10% owner) — https://whiteintel.dev/entity/cae55914-6efa-5074-bed8-1eb516719bf2
- **Kolchinsky Peter** (tenpercentowner) — https://whiteintel.dev/entity/33b3d577-9112-5c40-8586-a27dae0c41d4
- **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
- **RA CAPITAL MANAGEMENT, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/8d389c12-372a-5782-93b3-6f36e07414df
- **Third Rock Ventures GP V, LP** (tenpercentowner) — https://whiteintel.dev/entity/d2ded8f9-0ff2-59f2-965e-d52f10b49638
- **TRV GP V, LLC** (tenpercentowner) — https://whiteintel.dev/entity/8f2bbeb8-07b5-5f32-aa9d-7e4c46c5ab6f
- **Third Rock Ventures VI, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/e040295f-69f7-5db4-8439-423fa11de38d
- **Third Rock Ventures V, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/cae55914-6efa-5074-bed8-1eb516719bf2
- **Third Rock Ventures GP VI, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/07895bdb-91e4-568d-9cee-29c27dc89b23
- **TRV GP VI, LLC** (tenpercentowner) — https://whiteintel.dev/entity/ca36d732-7402-537a-8f13-7ec93fbed3e8

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

A **51-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 **Septerna, Inc.**. Human view: https://whiteintel.dev/entity/73a09cf2-416c-5ce7-8f3a-75597df4840f · Structured JSON: https://whiteintel.dev/api/public/dossier/73a09cf2-416c-5ce7-8f3a-75597df4840f._

_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"._