---
title: "Third Rock Ventures IV, L.P. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/77f5fefa-364a-598e-b4cd-7995a3f14e05
json: https://whiteintel.dev/api/public/dossier/77f5fefa-364a-598e-b4cd-7995a3f14e05
identifier: sec:0001688327
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Third Rock Ventures IV, L.P.

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001688327`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/77f5fefa-364a-598e-b4cd-7995a3f14e05  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/77f5fefa-364a-598e-b4cd-7995a3f14e05  

## Ownership & control

### Holdings / subsidiaries

- **Maze Therapeutics, Inc.** (10% owner) — https://whiteintel.dev/entity/dd91eb35-a8ad-5def-97d9-315d460750d5
- **Maze Therapeutics, Inc.** (10% owner) — https://whiteintel.dev/entity/dd91eb35-a8ad-5def-97d9-315d460750d5
- **Maze Therapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/dd91eb35-a8ad-5def-97d9-315d460750d5
- **Tango Therapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/6d4760cb-8ca3-5276-a9f6-f4d1e943f421
- **Dianthus Therapeutics, Inc. /DE/** (tenpercentowner) — https://whiteintel.dev/entity/6a3adac7-6100-5ac2-87d8-2e2620ec6a23
- **Relay Therapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/f03d0d4a-bd25-5b19-ae73-d3b24dddc4ec
- **PLIANT THERAPEUTICS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/b6f6099d-b132-5a0b-abe6-4b1af79a4d10
- **Revolution Medicines, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/69f58bea-eda5-5fda-9043-f7c5d5abebe9
- **Fulcrum Therapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/df229cb1-062c-55a0-8db0-ee10d8298b76

## 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 **Third Rock Ventures IV, L.P.** — https://whiteintel.dev/entity/77f5fefa-364a-598e-b4cd-7995a3f14e05 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Third Rock Ventures IV, L.P.**. Human view: https://whiteintel.dev/entity/77f5fefa-364a-598e-b4cd-7995a3f14e05 · Structured JSON: https://whiteintel.dev/api/public/dossier/77f5fefa-364a-598e-b4cd-7995a3f14e05._

_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"._