---
title: "Annexon, Inc. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/ea2cc909-5d92-5fdb-931f-208c65007c96
json: https://whiteintel.dev/api/public/dossier/ea2cc909-5d92-5fdb-931f-208c65007c96
identifier: sec:0001528115
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# Annexon, Inc.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001528115`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/ea2cc909-5d92-5fdb-931f-208c65007c96  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/ea2cc909-5d92-5fdb-931f-208c65007c96  

## Ownership & control

### Owners / controllers

- **SATTER MUNEER A** (tenpercentowner) — https://whiteintel.dev/entity/a47d9210-4b26-5c16-9cd6-fcafec4d017a
- **BCIP Life Sciences Associates, LP** (tenpercentowner) — https://whiteintel.dev/entity/c9af82a5-7ee7-5069-a85b-82d5ac292b27
- **Bain Capital Life Sciences Investors, LLC** (tenpercentowner) — https://whiteintel.dev/entity/2f2f1ab2-6c81-5add-ae47-55afbafde9a1
- **BAIN CAPITAL LIFE SCIENCES FUND, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/c13c6d1a-54bb-55a2-a7d3-00c6907f47a9
- **Bain Capital Life Sciences Partners, LP** (tenpercentowner) — https://whiteintel.dev/entity/9d189845-2be7-5751-8b16-6f4cd96ab1b0
- **KOPPEL ADAM** (tenpercentowner) — https://whiteintel.dev/entity/db8ba6b8-6758-5b90-8d6c-284b96d4f6b3
- **DEERFIELD PRIVATE DESIGN FUND IV, L.P.** (tenpercentownerother) — https://whiteintel.dev/entity/bba401c5-eaa6-57ec-9730-e5eeb88b37f1
- **Makhzoumi Mohamad** (tenpercentowner) — https://whiteintel.dev/entity/3f19d276-e986-51da-a1b9-2b6a3a28ec35
- **DEERFIELD MGMT IV, L.P.** (tenpercentownerother) — https://whiteintel.dev/entity/c6cf4615-e4c0-58d4-99c0-9a13b86723d4
- **Blackstone Group Management L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/cbc276a8-e8cb-586d-93a2-a20897a0fd02
- **BASKETT FOREST** (tenpercentowner) — https://whiteintel.dev/entity/82f90b88-c233-5f52-bc76-4342aaeed466
- **BLACKSTONE CLARUS III L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/0c4f73c2-e488-52c9-ac86-3ea89ec7d220
- **SONSINI PETER W.** (tenpercentowner) — https://whiteintel.dev/entity/497a01a0-d587-5cb5-9ace-d357d91f6f59
- **DEERFIELD MANAGEMENT COMPANY, L.P. (SERIES C)** (tenpercentownerother) — https://whiteintel.dev/entity/31a5caa4-05d6-5739-b04b-16a6222da289
- **BLACKSTONE HOLDINGS II L.P.** (tenpercentowner) — https://whiteintel.dev/entity/26bfae43-52a6-5b08-9aab-f763c6e7d7c9
- **CLARUS LIFESCIENCES III, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/159942fb-6eea-551f-b1ba-22cd2a2b0457
- **Green Jeremy** (tenpercentowner) — https://whiteintel.dev/entity/9a44ab54-8a62-5436-912e-17661f2862a3
- **Schwartz Jeffrey Lawrence** (tenpercentowner) — https://whiteintel.dev/entity/71718b0f-84db-517c-b9fd-106e69498033
- **MAKOWER JOSHUA** (tenpercentowner) — https://whiteintel.dev/entity/4389ae96-6525-5175-ad9d-4b43b5c43a54
- **Blackstone Holdings I/II GP L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/bbef6002-bf77-5702-9876-8590e0b21bf4
- **Flynn James E** (tenpercentownerother) — https://whiteintel.dev/entity/e41579a6-248b-5454-a089-66f9a7c69ae7
- **NEA 15 GP, LLC** (tenpercentowner) — https://whiteintel.dev/entity/f7ff8bd6-e86f-5180-a514-c0935c7615ba
- **DEERFIELD CAPITAL LP** (tenpercentownerother) — https://whiteintel.dev/entity/5f3c11a7-c53a-58c1-ba4f-1ad86e04c791
- **Redmile Group, LLC** (tenpercentowner) — https://whiteintel.dev/entity/4d5d139b-079d-5f97-a23d-55867544d098
- **NEA Partners 15, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/4a2ab59e-2f27-504e-877f-013df4fd3189
- **DEERFIELD PARTNERS, L.P.** (tenpercentownerother) — https://whiteintel.dev/entity/65f05e41-ef95-517f-9b59-b6fc681aa121
- **New Enterprise Associates 15, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/53c0770f-be8c-5b6a-967f-c7b6e3d16a32
- **SCHWARZMAN STEPHEN A** (tenpercentowner) — https://whiteintel.dev/entity/c4e8979e-462a-5a14-b156-c21c05e52084
- **CLARUS VENTURES III GP, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/8c6fa7b8-c49a-540a-9eb5-ee89bb1de086
- **Blackstone Inc.** (tenpercentowner) — https://whiteintel.dev/entity/5ff5c874-40c8-5f5a-85f3-ba846f91fd02
- **SANDELL SCOTT D** (tenpercentowner) — https://whiteintel.dev/entity/f5d27853-015c-5d89-b453-67c52f1385ee
- **Florence Anthony A. Jr.** (tenpercentowner) — https://whiteintel.dev/entity/94e349e2-421c-5582-b88d-da2fd26c7769

### UBO chain (walk to the ultimate owner)

A **334-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key 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 **Annexon, Inc.** — https://whiteintel.dev/entity/ea2cc909-5d92-5fdb-931f-208c65007c96 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Annexon, Inc.**. Human view: https://whiteintel.dev/entity/ea2cc909-5d92-5fdb-931f-208c65007c96 · Structured JSON: https://whiteintel.dev/api/public/dossier/ea2cc909-5d92-5fdb-931f-208c65007c96._

_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"._