---
title: "LEFF JONATHAN A — Ownership Dossier"
canonical: https://whiteintel.dev/entity/eb1e9371-4e4e-597d-af84-56ee732bf75e
json: https://whiteintel.dev/api/public/dossier/eb1e9371-4e4e-597d-af84-56ee732bf75e
identifier: sec:0001469029
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# LEFF JONATHAN A

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001469029`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/eb1e9371-4e4e-597d-af84-56ee732bf75e  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/eb1e9371-4e4e-597d-af84-56ee732bf75e  

## Ownership & control

### Holdings / subsidiaries

- **INTERMUNE INC** (officer) — https://whiteintel.dev/entity/3bdbe624-554a-50e2-a68d-0f706aaed56f
- **HALOZYME THERAPEUTICS, INC.** (officer) — https://whiteintel.dev/entity/69cc61fe-9e71-5735-ab26-f3a37dc83892

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **LEFF JONATHAN A**. Human view: https://whiteintel.dev/entity/eb1e9371-4e4e-597d-af84-56ee732bf75e · Structured JSON: https://whiteintel.dev/api/public/dossier/eb1e9371-4e4e-597d-af84-56ee732bf75e._

_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"._