---
title: "BLOCK JOEL M — Ownership Dossier"
canonical: https://whiteintel.dev/entity/27a232bd-1d57-52aa-99d9-997d02bb1e5d
json: https://whiteintel.dev/api/public/dossier/27a232bd-1d57-52aa-99d9-997d02bb1e5d
identifier: sec:0002134416
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# BLOCK JOEL M

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0002134416`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/27a232bd-1d57-52aa-99d9-997d02bb1e5d  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/27a232bd-1d57-52aa-99d9-997d02bb1e5d  

## Ownership & control

### Holdings / subsidiaries

- **Sphere 3D Corp.** (officer) — https://whiteintel.dev/entity/cc7b3e1a-5f61-5427-9c7c-d21802ef0e69
- **Sphere 3D Corp.** (director) — https://whiteintel.dev/entity/cc7b3e1a-5f61-5427-9c7c-d21802ef0e69

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **BLOCK JOEL M**. Human view: https://whiteintel.dev/entity/27a232bd-1d57-52aa-99d9-997d02bb1e5d · Structured JSON: https://whiteintel.dev/api/public/dossier/27a232bd-1d57-52aa-99d9-997d02bb1e5d._

_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"._