---
title: "MPM BIO VENTURES III GP LP — Ownership Dossier"
canonical: https://whiteintel.dev/entity/7e05515f-b237-5e32-a556-29fdf0da6367
json: https://whiteintel.dev/api/public/dossier/7e05515f-b237-5e32-a556-29fdf0da6367
identifier: sec:0001249143
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MPM BIO VENTURES III GP LP

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001249143`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/7e05515f-b237-5e32-a556-29fdf0da6367  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/7e05515f-b237-5e32-a556-29fdf0da6367  

## Ownership & control

### Holdings / subsidiaries

- **MPM ACQUISITION CORP** (other) — https://whiteintel.dev/entity/6ba1394a-97c0-5b9d-9529-b52f63e198b8
- **MPM ACQUISITION CORP** (tenpercentowner) — https://whiteintel.dev/entity/6ba1394a-97c0-5b9d-9529-b52f63e198b8
- **HUMANIGEN, INC** (tenpercentowner) — https://whiteintel.dev/entity/e5e57595-91a9-57dd-a842-3a01ab5db3cc
- **PERNIX SLEEP, INC.** (tenpercentowner) — https://whiteintel.dev/entity/3613414e-93b8-5896-b09f-71a1296ab7fb
- **COMBINATORX INC** (tenpercentowner) — https://whiteintel.dev/entity/ebcb95b8-c7e4-5779-b5e7-29ce6029d873
- **Altimmune, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/81e04289-eb27-5cec-96f2-99206bc89349
- **ENTEROMEDICS INC** (other) — https://whiteintel.dev/entity/9b4dd456-9b55-5559-b44c-db2f8c068630
- **ARYX THERAPEUTICS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/027b02f6-1de8-523d-8360-3f45bcf55c0e
- **ENTEROMEDICS INC** (tenpercentowner) — https://whiteintel.dev/entity/9b4dd456-9b55-5559-b44c-db2f8c068630
- **PEPLIN INC** (tenpercentowner) — https://whiteintel.dev/entity/c6f5a177-199a-51b2-9d5d-c76fcc0b71f6
- **NEORX CORP** (tenpercentowner) — https://whiteintel.dev/entity/7b75811b-52dd-5d01-a88a-f39ea2c674bf
- **PHARMASSET INC** (tenpercentowner) — https://whiteintel.dev/entity/92cb38df-5935-50f1-96ff-92378029c8fd

…and **4** 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 **MPM BIO VENTURES III GP LP** — https://whiteintel.dev/entity/7e05515f-b237-5e32-a556-29fdf0da6367 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MPM BIO VENTURES III GP LP**. Human view: https://whiteintel.dev/entity/7e05515f-b237-5e32-a556-29fdf0da6367 · Structured JSON: https://whiteintel.dev/api/public/dossier/7e05515f-b237-5e32-a556-29fdf0da6367._

_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"._