---
title: "ARRHYTHMIA RESEARCH TECHNOLOGY INC /DE/ — Ownership Dossier"
canonical: https://whiteintel.dev/entity/3ecc4bf6-3dc4-5439-b65e-b2ee5b824893
json: https://whiteintel.dev/api/public/dossier/3ecc4bf6-3dc4-5439-b65e-b2ee5b824893
identifier: sec:0000819689
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ARRHYTHMIA RESEARCH TECHNOLOGY INC /DE/

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0000819689`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/3ecc4bf6-3dc4-5439-b65e-b2ee5b824893  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/3ecc4bf6-3dc4-5439-b65e-b2ee5b824893  

## Ownership & control

### Owners / controllers

- **HEINEMANN STEVEN** (tenpercentowner) — https://whiteintel.dev/entity/ade797ad-8180-5c33-8501-f937ec7a043d
- **FRIEDMAN RODD** (tenpercentowner) — https://whiteintel.dev/entity/3b9deab7-fb3d-5fad-990e-c0b7a1927063
- **REF SECURITIES & CO.** (tenpercentowner) — https://whiteintel.dev/entity/036d0b41-5b09-51d6-b85c-ca532a9f105f
- **CHAMBERS MEDICAL FOUNDATION** (tenpercentowner) — https://whiteintel.dev/entity/bddcbe4d-2474-519e-9726-97db40926e88

### UBO chain (walk to the ultimate owner)

A **26-step** ownership/control chain to the ultimate beneficial owner is resolved for this entity. The full cited chain unlocks with a paid API key or a one-off dossier — https://whiteintel.dev/pricing.

## Get the full, resolved dossier (agent-callable)

The above is the free teaser. The resolved **multi-hop UBO chain**, ownership **%**, full **financial history**, itemised **assets** and the hop-by-hop **exposure path** are the paid depth — callable as tools from your agent:

```bash
npx -y @whiteintel/mcp-server   # then: get_dossier · trace_ownership_path · check_offshore_exposure
```

Or unlock a one-off cited dossier for **ARRHYTHMIA RESEARCH TECHNOLOGY INC /DE/** — https://whiteintel.dev/entity/3ecc4bf6-3dc4-5439-b65e-b2ee5b824893 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ARRHYTHMIA RESEARCH TECHNOLOGY INC /DE/**. Human view: https://whiteintel.dev/entity/3ecc4bf6-3dc4-5439-b65e-b2ee5b824893 · Structured JSON: https://whiteintel.dev/api/public/dossier/3ecc4bf6-3dc4-5439-b65e-b2ee5b824893._

_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"._