---
title: "VALUEACT CO-INVEST MASTER FUND, L.P. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/324b967b-49f1-5c19-9e58-5ae401ffdbe5
json: https://whiteintel.dev/api/public/dossier/324b967b-49f1-5c19-9e58-5ae401ffdbe5
identifier: sec:0001579734
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# VALUEACT CO-INVEST MASTER FUND, L.P.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001579734`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/324b967b-49f1-5c19-9e58-5ae401ffdbe5  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/324b967b-49f1-5c19-9e58-5ae401ffdbe5  

## Ownership & control

### Holdings / subsidiaries

- **Bausch Health Companies Inc.** (directorother) — https://whiteintel.dev/entity/c6a14e01-e6ff-5339-8c50-1329d2e612f9
- **MICROSOFT CORP** (directorother) — https://whiteintel.dev/entity/de8f2fc9-9f95-5215-89a9-e422bb062a7a
- **ICN MERGER CORP** (directorother) — https://whiteintel.dev/entity/2eafb4d3-4509-527a-a9fa-a2f91481fbfc

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **VALUEACT CO-INVEST MASTER FUND, L.P.**. Human view: https://whiteintel.dev/entity/324b967b-49f1-5c19-9e58-5ae401ffdbe5 · Structured JSON: https://whiteintel.dev/api/public/dossier/324b967b-49f1-5c19-9e58-5ae401ffdbe5._

_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"._