---
title: "BLAIR HENRY E — Ownership Dossier"
canonical: https://whiteintel.dev/entity/098ca1c4-b697-5a2f-8985-2fa4556a289a
json: https://whiteintel.dev/api/public/dossier/098ca1c4-b697-5a2f-8985-2fa4556a289a
identifier: sec:0001021045
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# BLAIR HENRY E

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001021045`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/098ca1c4-b697-5a2f-8985-2fa4556a289a  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/098ca1c4-b697-5a2f-8985-2fa4556a289a  

## Ownership & control

### Holdings / subsidiaries

- **DYAX CORP** (other) — https://whiteintel.dev/entity/3310e76e-3ab2-54ec-8e26-bada8483a24e
- **DYAX CORP** (director) — https://whiteintel.dev/entity/3310e76e-3ab2-54ec-8e26-bada8483a24e
- **DYAX CORP** (officer) — https://whiteintel.dev/entity/3310e76e-3ab2-54ec-8e26-bada8483a24e
- **GENZYME CORP** (director) — https://whiteintel.dev/entity/4d9e9491-7730-5e6b-ab40-36b01c798bb5

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **BLAIR HENRY E**. Human view: https://whiteintel.dev/entity/098ca1c4-b697-5a2f-8985-2fa4556a289a · Structured JSON: https://whiteintel.dev/api/public/dossier/098ca1c4-b697-5a2f-8985-2fa4556a289a._

_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"._