---
title: "FRAZIER LIFE SCIENCES X, L.P. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/7fb1e302-276e-5736-bbf2-f0c3fd564dfd
json: https://whiteintel.dev/api/public/dossier/7fb1e302-276e-5736-bbf2-f0c3fd564dfd
identifier: sec:0001790879
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# FRAZIER LIFE SCIENCES X, L.P.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001790879`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/7fb1e302-276e-5736-bbf2-f0c3fd564dfd  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/7fb1e302-276e-5736-bbf2-f0c3fd564dfd  

## Ownership & control

### Holdings / subsidiaries

- **MBX Biosciences, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/6af50270-7dd4-5262-8756-e6fc9afb96e3
- **HilleVax, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/440f48e0-0591-5c4e-ad01-b130a9de9705
- **FRAZIER LIFESCIENCES ACQUISITION CORP** (director) — https://whiteintel.dev/entity/9bc17048-c8b1-54d6-ac0a-525a34f190f0

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **FRAZIER LIFE SCIENCES X, L.P.**. Human view: https://whiteintel.dev/entity/7fb1e302-276e-5736-bbf2-f0c3fd564dfd · Structured JSON: https://whiteintel.dev/api/public/dossier/7fb1e302-276e-5736-bbf2-f0c3fd564dfd._

_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"._