---
title: "WINMILL MARK CAMPBELL — Ownership Dossier"
canonical: https://whiteintel.dev/entity/904bc85e-3129-5097-b996-ba428d0fcdae
json: https://whiteintel.dev/api/public/dossier/904bc85e-3129-5097-b996-ba428d0fcdae
identifier: sec:0001019264
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# WINMILL MARK CAMPBELL

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001019264`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/904bc85e-3129-5097-b996-ba428d0fcdae  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/904bc85e-3129-5097-b996-ba428d0fcdae  

## Ownership & control

### Holdings / subsidiaries

- **Global Self Storage, Inc.** (officer) — https://whiteintel.dev/entity/dbb79783-ef69-5514-915c-b1fd58cf7346
- **BULL & BEAR MUNICIPAL INCOME FUND INC** (officer) — https://whiteintel.dev/entity/6428c4ef-4a55-5d4e-a706-e75b97543520
- **BULL & BEAR MUNICIPAL INCOME FUND INC** (director) — https://whiteintel.dev/entity/6428c4ef-4a55-5d4e-a706-e75b97543520
- **Global Self Storage, Inc.** (officer) — https://whiteintel.dev/entity/dbb79783-ef69-5514-915c-b1fd58cf7346
- **Global Self Storage, Inc.** (director) — https://whiteintel.dev/entity/dbb79783-ef69-5514-915c-b1fd58cf7346
- **Global Self Storage, Inc.** (other) — https://whiteintel.dev/entity/dbb79783-ef69-5514-915c-b1fd58cf7346
- **FOXBY CORP.** (other) — https://whiteintel.dev/entity/214dbe82-74f8-59c3-8520-e6f4f37dd4f6
- **BEXIL CORP** (tenpercentowner) — https://whiteintel.dev/entity/4d6c0fcf-17f0-541d-8e74-8e5c9879bcc2

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **WINMILL MARK CAMPBELL**. Human view: https://whiteintel.dev/entity/904bc85e-3129-5097-b996-ba428d0fcdae · Structured JSON: https://whiteintel.dev/api/public/dossier/904bc85e-3129-5097-b996-ba428d0fcdae._

_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"._