---
title: "MPM BIOVENTURES IV LLC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/4d2d2cd4-d96f-570f-92a0-c0867bbed4ba
json: https://whiteintel.dev/api/public/dossier/4d2d2cd4-d96f-570f-92a0-c0867bbed4ba
identifier: sec:0001358312
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MPM BIOVENTURES IV LLC

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001358312`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/4d2d2cd4-d96f-570f-92a0-c0867bbed4ba  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/4d2d2cd4-d96f-570f-92a0-c0867bbed4ba  

## Ownership & control

### Holdings / subsidiaries

- **MPM ACQUISITION CORP** (other) — https://whiteintel.dev/entity/6ba1394a-97c0-5b9d-9529-b52f63e198b8
- **Syndax Pharmaceuticals Inc** (tenpercentowner) — https://whiteintel.dev/entity/6bf1b313-1d8f-5b91-99ed-9315f51eef71
- **CHIASMA INC** (tenpercentowner) — https://whiteintel.dev/entity/5dda7b38-ebfa-5525-977f-794a10ea7fcb
- **MPM ACQUISITION CORP** (tenpercentowner) — https://whiteintel.dev/entity/6ba1394a-97c0-5b9d-9529-b52f63e198b8
- **TRIVASCULAR TECHNOLOGIES, INC.** (tenpercentowner) — https://whiteintel.dev/entity/e1e0b3e6-2d9e-542c-92fd-023aa32b157d
- **EPIZYME, INC.** (tenpercentowner) — https://whiteintel.dev/entity/1962d800-cae3-56fc-a964-5bee0a4135a8
- **CONATUS PHARMACEUTICALS INC** (tenpercentowner) — https://whiteintel.dev/entity/a0f384b3-47fd-5719-bb2e-2f8165c2dadb
- **Pacira BioSciences, Inc.** (other) — https://whiteintel.dev/entity/7da95720-1de5-53b7-89b1-a3f8c2a07739
- **Pacira BioSciences, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/7da95720-1de5-53b7-89b1-a3f8c2a07739
- **PEPLIN INC** (tenpercentowner) — https://whiteintel.dev/entity/c6f5a177-199a-51b2-9d5d-c76fcc0b71f6
- **MEMORY PHARMACEUTICALS CORP** (tenpercentowner) — https://whiteintel.dev/entity/68139d52-8a59-5d46-b969-7d24f0bf0ef4

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MPM BIOVENTURES IV LLC**. Human view: https://whiteintel.dev/entity/4d2d2cd4-d96f-570f-92a0-c0867bbed4ba · Structured JSON: https://whiteintel.dev/api/public/dossier/4d2d2cd4-d96f-570f-92a0-c0867bbed4ba._

_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"._