---
title: "ATHYRIUM OPPORTUNITIES FUND (B) LP — Ownership Dossier"
canonical: https://whiteintel.dev/entity/fac44a7f-3c4d-55d8-ab75-61ed6df80bda
json: https://whiteintel.dev/api/public/dossier/fac44a7f-3c4d-55d8-ab75-61ed6df80bda
identifier: sec:0001540542
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ATHYRIUM OPPORTUNITIES FUND (B) LP

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001540542`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/fac44a7f-3c4d-55d8-ab75-61ed6df80bda  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/fac44a7f-3c4d-55d8-ab75-61ed6df80bda  

## Ownership & control

### Holdings / subsidiaries

- **ASCENDANT MDX, INC.** (tenpercentowner) — https://whiteintel.dev/entity/a53707ac-a4b5-549b-b452-e519db6f900a
- **DIVERSA CORP** (tenpercentowner) — https://whiteintel.dev/entity/9c68c775-89a8-507b-8080-9986e798941e

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ATHYRIUM OPPORTUNITIES FUND (B) LP**. Human view: https://whiteintel.dev/entity/fac44a7f-3c4d-55d8-ab75-61ed6df80bda · Structured JSON: https://whiteintel.dev/api/public/dossier/fac44a7f-3c4d-55d8-ab75-61ed6df80bda._

_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"._