---
title: "SARISSA CAPITAL MASTER FUND II LP — Ownership Dossier"
canonical: https://whiteintel.dev/entity/71aaf05a-ec3a-5fb3-aa10-44a67d69adbc
json: https://whiteintel.dev/api/public/dossier/71aaf05a-ec3a-5fb3-aa10-44a67d69adbc
identifier: sec:0001811636
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SARISSA CAPITAL MASTER FUND II LP

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001811636`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/71aaf05a-ec3a-5fb3-aa10-44a67d69adbc  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/71aaf05a-ec3a-5fb3-aa10-44a67d69adbc  

## Ownership & control

### Holdings / subsidiaries

- **Iterum Therapeutics plc** (tenpercentowner) — https://whiteintel.dev/entity/9e861cbf-735d-52f2-a727-f5ac0e43740e
- **Regulus Therapeutics Inc.** (tenpercentowner) — https://whiteintel.dev/entity/4fb1e8db-c587-5dce-8215-4c53445c8050

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SARISSA CAPITAL MASTER FUND II LP**. Human view: https://whiteintel.dev/entity/71aaf05a-ec3a-5fb3-aa10-44a67d69adbc · Structured JSON: https://whiteintel.dev/api/public/dossier/71aaf05a-ec3a-5fb3-aa10-44a67d69adbc._

_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"._