---
title: "GROUSSMAN MARK — Ownership Dossier"
canonical: https://whiteintel.dev/entity/2f568c25-ce81-56e2-83ca-415a148f651f
json: https://whiteintel.dev/api/public/dossier/2f568c25-ce81-56e2-83ca-415a148f651f
identifier: sec:0001552880
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# GROUSSMAN MARK

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001552880`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/2f568c25-ce81-56e2-83ca-415a148f651f  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/2f568c25-ce81-56e2-83ca-415a148f651f  

## Ownership & control

### Holdings / subsidiaries

- **MARA Holdings, Inc.** (officer) — https://whiteintel.dev/entity/3107c120-78f4-5a9a-acc4-24493bc925f5
- **MUSCLEPHARM CORP** (director) — https://whiteintel.dev/entity/72617229-daf9-5e3c-a8a1-1abcc3089396

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **GROUSSMAN MARK**. Human view: https://whiteintel.dev/entity/2f568c25-ce81-56e2-83ca-415a148f651f · Structured JSON: https://whiteintel.dev/api/public/dossier/2f568c25-ce81-56e2-83ca-415a148f651f._

_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"._