---
title: "FLAGSHIP VENTURES FUND IV, L.P. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/6b81dfd1-0262-57f1-a8dd-c0afe7a2dee5
json: https://whiteintel.dev/api/public/dossier/6b81dfd1-0262-57f1-a8dd-c0afe7a2dee5
identifier: sec:0001503559
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# FLAGSHIP VENTURES FUND IV, L.P.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001503559`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/6b81dfd1-0262-57f1-a8dd-c0afe7a2dee5  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/6b81dfd1-0262-57f1-a8dd-c0afe7a2dee5  

## Ownership & control

### Holdings / subsidiaries

- **EVELO BIOSCIENCES, INC.** (tenpercentowner) — https://whiteintel.dev/entity/6f4d53f6-1148-572c-b397-1b7764eb7863
- **AXCELLA HEALTH INC.** (tenpercentowner) — https://whiteintel.dev/entity/1053fd5e-82ea-5f2b-893b-dd8445acf4ec
- **RUBIUS THERAPEUTICS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/7f93a5cf-b8de-5224-882e-30b69db44caa
- **KALEIDO BIOSCIENCES, INC.** (tenpercentowner) — https://whiteintel.dev/entity/4b90c9e5-9117-5de2-a9a2-2cd0e1c8a834
- **Seres Therapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/748ec5f3-ae37-5b7c-9c28-228115c35829
- **Moderna, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/44e182e1-9f84-5331-874d-4a0f6c98bf6a
- **TransMedics Group, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/4ab6160e-a2d6-56f0-bf7e-fd08bd792035
- **LS22, INC.** (tenpercentowner) — https://whiteintel.dev/entity/3e598953-a994-5c75-bab0-550d6c26ea32
- **Editas Medicine, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/ef77060a-ecdc-5822-8634-7ef724c01154
- **Carisma Therapeutics Inc.** (tenpercentowner) — https://whiteintel.dev/entity/a9fad273-9024-53b6-8c78-027b6762d4e2
- **T2 Biosystems, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/87a8bf9a-18bb-5181-85e6-a368bd381951

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **FLAGSHIP VENTURES FUND IV, L.P.**. Human view: https://whiteintel.dev/entity/6b81dfd1-0262-57f1-a8dd-c0afe7a2dee5 · Structured JSON: https://whiteintel.dev/api/public/dossier/6b81dfd1-0262-57f1-a8dd-c0afe7a2dee5._

_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"._