---
title: "Cloonan Michael — Ownership Dossier"
canonical: https://whiteintel.dev/entity/97ca372e-92c4-5ef1-9ec1-4df4cb38cc73
json: https://whiteintel.dev/api/public/dossier/97ca372e-92c4-5ef1-9ec1-4df4cb38cc73
identifier: sec:0001704336
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Cloonan Michael

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001704336`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/97ca372e-92c4-5ef1-9ec1-4df4cb38cc73  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/97ca372e-92c4-5ef1-9ec1-4df4cb38cc73  

## Ownership & control

### Holdings / subsidiaries

- **Sionna Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/36003c1e-2a7d-5ea2-a95f-e01c345a874c
- **Sionna Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/36003c1e-2a7d-5ea2-a95f-e01c345a874c
- **Sionna Therapeutics, Inc.** (director) — https://whiteintel.dev/entity/36003c1e-2a7d-5ea2-a95f-e01c345a874c
- **Sionna Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/36003c1e-2a7d-5ea2-a95f-e01c345a874c
- **bluebird bio, Inc.** (director) — https://whiteintel.dev/entity/2368d4d2-afa3-5231-9caf-a54123271869
- **Sage Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/e1a91a56-0391-5d6e-9f93-0da42f8dd395

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Cloonan Michael**. Human view: https://whiteintel.dev/entity/97ca372e-92c4-5ef1-9ec1-4df4cb38cc73 · Structured JSON: https://whiteintel.dev/api/public/dossier/97ca372e-92c4-5ef1-9ec1-4df4cb38cc73._

_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"._