---
title: "MPM SUNSTATES FUND GP LLC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/b99dbc31-e709-52f3-967e-a68d6c7bdee6
json: https://whiteintel.dev/api/public/dossier/b99dbc31-e709-52f3-967e-a68d6c7bdee6
identifier: sec:0001765026
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# MPM SUNSTATES FUND GP LLC

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001765026`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/b99dbc31-e709-52f3-967e-a68d6c7bdee6  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/b99dbc31-e709-52f3-967e-a68d6c7bdee6  

## Ownership & control

### Holdings / subsidiaries

- **TCR2 THERAPEUTICS INC.** (tenpercentowner) — https://whiteintel.dev/entity/f5d5d0ad-b59c-58de-9c7e-fc8dbefdcc32
- **ONCORUS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/49a765be-476c-53e1-ab95-f16b61b3af27

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **MPM SUNSTATES FUND GP LLC**. Human view: https://whiteintel.dev/entity/b99dbc31-e709-52f3-967e-a68d6c7bdee6 · Structured JSON: https://whiteintel.dev/api/public/dossier/b99dbc31-e709-52f3-967e-a68d6c7bdee6._

_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"._