---
title: "YOUNG WILLIAM D — Ownership Dossier"
canonical: https://whiteintel.dev/entity/425ff31d-a7be-5422-9bfe-3e8b7dd9d1ff
json: https://whiteintel.dev/api/public/dossier/425ff31d-a7be-5422-9bfe-3e8b7dd9d1ff
identifier: sec:0001217420
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# YOUNG WILLIAM D

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001217420`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/425ff31d-a7be-5422-9bfe-3e8b7dd9d1ff  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/425ff31d-a7be-5422-9bfe-3e8b7dd9d1ff  

## Ownership & control

### Holdings / subsidiaries

- **Praxis Precision Medicines, Inc.** (director) — https://whiteintel.dev/entity/2ef2dce1-ecbd-5a08-8506-253f0f9d5efe
- **AUTOLUS THERAPEUTICS LTD** (director) — https://whiteintel.dev/entity/b5b36aa4-b1ad-5cfe-a958-709735195955
- **Theravance Biopharma, Inc.** (director) — https://whiteintel.dev/entity/d7255ed9-d961-59e3-906e-8f659740f843
- **VERTEX PHARMACEUTICALS INC / MA** (director) — https://whiteintel.dev/entity/71acdf6c-489a-5611-a135-def38df30ab8
- **BIOMARIN PHARMACEUTICAL INC** (director) — https://whiteintel.dev/entity/da243f5f-5fb4-5808-b258-c3726f1bb8cb
- **Innoviva, Inc.** (director) — https://whiteintel.dev/entity/1fc7f1be-5f35-5f88-bd49-2a493e9f2008
- **MONOGRAM BIOSCIENCES, INC.** (officer) — https://whiteintel.dev/entity/fce4e923-9e19-5af9-a562-c63ed6c1d6f5
- **MONOGRAM BIOSCIENCES, INC.** (director) — https://whiteintel.dev/entity/fce4e923-9e19-5af9-a562-c63ed6c1d6f5
- **HUMAN GENOME SCIENCES INC** (director) — https://whiteintel.dev/entity/0792ad78-c154-5241-9223-54aebab51335

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **YOUNG WILLIAM D**. Human view: https://whiteintel.dev/entity/425ff31d-a7be-5422-9bfe-3e8b7dd9d1ff · Structured JSON: https://whiteintel.dev/api/public/dossier/425ff31d-a7be-5422-9bfe-3e8b7dd9d1ff._

_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"._