---
title: "Tourmaline Bio, Inc. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/e1b4b063-4f99-531b-96ca-e789eae5eefb
json: https://whiteintel.dev/api/public/dossier/e1b4b063-4f99-531b-96ca-e789eae5eefb
identifier: sec:0001827506
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# Tourmaline Bio, Inc.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001827506`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/e1b4b063-4f99-531b-96ca-e789eae5eefb  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/e1b4b063-4f99-531b-96ca-e789eae5eefb  

## Ownership & control

### Owners / controllers

- **NOVARTIS AG** (tenpercentowner) — https://whiteintel.dev/entity/e1e197f4-0cc7-5a52-a5e7-da906adc8942
- **AGARWALA SANDIP** (tenpercentowner) — https://whiteintel.dev/entity/528c2487-abaf-5508-b477-470f83a52a23
- **CLARUS IV-C, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/eb07ed16-a402-5d20-aee9-bcf42240846c
- **CLARUS DE II, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/73543967-a267-52a2-9cbd-096a632f6b85
- **Blackstone Inc.** (tenpercentowner) — https://whiteintel.dev/entity/5ff5c874-40c8-5f5a-85f3-ba846f91fd02
- **CLARUS VENTURES III GP, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/8c6fa7b8-c49a-540a-9eb5-ee89bb1de086
- **BLACKSTONE HOLDINGS II L.P.** (tenpercentowner) — https://whiteintel.dev/entity/26bfae43-52a6-5b08-9aab-f763c6e7d7c9
- **CLARUS IV-B, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/03b315ae-c7a3-5f8c-86dd-2748f0c88b6b
- **Blackstone Holdings I L.P.** (tenpercentowner) — https://whiteintel.dev/entity/1d582a2e-ad67-57de-96bc-19b58070f102
- **BLACKSTONE CLARUS GP L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/0e031094-cf27-5752-9067-d1f3619c681b
- **CLARUS IV-A, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/58366564-187b-5103-bab8-33ae9d63c309
- **BLACKSTONE CLARUS III L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/0c4f73c2-e488-52c9-ac86-3ea89ec7d220
- **LONGITUDE VENTURE PARTNERS III, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/2c9bb5d8-4154-57d0-987c-6e6e85ec9c3d
- **CLARUS VENTURES DE GP, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/0cd69eae-3429-5bef-be32-09a6826ce088
- **ENRIGHT PATRICK G** (tenpercentowner) — https://whiteintel.dev/entity/72567e3a-3eb2-5a7f-b14f-75c71d8b8f7f
- **CLARUS LIFESCIENCES III, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/159942fb-6eea-551f-b1ba-22cd2a2b0457
- **CLARUS DEFINED EXIT I, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/ef241667-35f5-50fa-97aa-a4c3db422865
- **BLACKSTONE CLARUS DE L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/206f786b-67ba-5031-9f53-43698577483b
- **LONGITUDE CAPITAL PARTNERS III, LLC** (tenpercentowner) — https://whiteintel.dev/entity/8241c50f-dff4-5711-be37-e456d3f18633
- **TAMMENOMS BAKKER JULIET** (tenpercentowner) — https://whiteintel.dev/entity/f259a46b-9160-5068-bda6-ebc8b0a595b2
- **BLACKSTONE CLARUS GP L.P.** (tenpercentowner) — https://whiteintel.dev/entity/d4a6d032-5a07-5f62-96fc-ea56b15776e0
- **CLARUS IV GP L.P.** (tenpercentowner) — https://whiteintel.dev/entity/43fa9165-781e-5f7a-8e6c-71db5efba038
- **CLARUS IV-D, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/7153a00d-5649-53ba-ae5b-66df35901e94
- **ILDSTAD SUZANNE** (tenpercentowner) — https://whiteintel.dev/entity/42a1696d-4070-5d7f-be0f-1d360e7b0454
- **SCHWARZMAN STEPHEN A** (tenpercentowner) — https://whiteintel.dev/entity/c4e8979e-462a-5a14-b156-c21c05e52084
- **Blackstone Group Management L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/cbc276a8-e8cb-586d-93a2-a20897a0fd02
- **Blackstone Holdings I/II GP L.L.C.** (tenpercentowner) — https://whiteintel.dev/entity/bbef6002-bf77-5702-9876-8590e0b21bf4

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

A **324-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 **Tourmaline Bio, Inc.** — https://whiteintel.dev/entity/e1b4b063-4f99-531b-96ca-e789eae5eefb · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Tourmaline Bio, Inc.**. Human view: https://whiteintel.dev/entity/e1b4b063-4f99-531b-96ca-e789eae5eefb · Structured JSON: https://whiteintel.dev/api/public/dossier/e1b4b063-4f99-531b-96ca-e789eae5eefb._

_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"._