---
title: "Waddill William D. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/de70c968-da80-52df-95a6-d439e239c147
json: https://whiteintel.dev/api/public/dossier/de70c968-da80-52df-95a6-d439e239c147
identifier: sec:0001553338
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# Waddill William D.

**Type:** Person  
**Jurisdiction:** US  
**Identifier:** `sec:0001553338`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/de70c968-da80-52df-95a6-d439e239c147  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/de70c968-da80-52df-95a6-d439e239c147  

## Ownership & control

### Holdings / subsidiaries

- **Protagonist Therapeutics, Inc** (director) — https://whiteintel.dev/entity/3274f611-1f63-5f98-8861-a13733c35ed6
- **Protagonist Therapeutics, Inc** (director) — https://whiteintel.dev/entity/3274f611-1f63-5f98-8861-a13733c35ed6
- **Annexon, Inc.** (director) — https://whiteintel.dev/entity/ea2cc909-5d92-5fdb-931f-208c65007c96
- **Protagonist Therapeutics, Inc** (director) — https://whiteintel.dev/entity/3274f611-1f63-5f98-8861-a13733c35ed6
- **ARROWHEAD PHARMACEUTICALS, INC.** (director) — https://whiteintel.dev/entity/20125424-c80b-5409-af56-8d2f6f221f50
- **TURNSTONE BIOLOGICS CORP.** (director) — https://whiteintel.dev/entity/7bc996bc-af2f-5c5a-a3bb-7028d58a1a1f
- **CALITHERA BIOSCIENCES, INC.** (officer) — https://whiteintel.dev/entity/62e5aa07-2012-5418-a486-e6d032e5e66f
- **ONCOMED PHARMACEUTICALS INC** (officer) — https://whiteintel.dev/entity/0dcd1863-2667-5a48-b409-d6cf3483c650

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Waddill William D.**. Human view: https://whiteintel.dev/entity/de70c968-da80-52df-95a6-d439e239c147 · Structured JSON: https://whiteintel.dev/api/public/dossier/de70c968-da80-52df-95a6-d439e239c147._

_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"._