---
title: "BTU INTERNATIONAL INC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/04d1d476-5898-59e4-aa2d-e3f1cb1dca19
json: https://whiteintel.dev/api/public/dossier/04d1d476-5898-59e4-aa2d-e3f1cb1dca19
identifier: sec:0000840883
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# BTU INTERNATIONAL INC

**Type:** Company  
**Jurisdiction:** US  
**Identifier:** `sec:0000840883`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/04d1d476-5898-59e4-aa2d-e3f1cb1dca19  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/04d1d476-5898-59e4-aa2d-e3f1cb1dca19  

## Ownership & control

### Owners / controllers

- **MARXE AUSTIN W & GREENHOUSE DAVID M** (tenpercentowner) — https://whiteintel.dev/entity/9ac6eb0c-0d33-5e17-9d9e-aa6c1990fcfd
- **AWM Investment Company, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/7065ae04-862d-55ec-a45e-84b871905a17
- **WANSEM PAUL J VAN DER** (director) — https://whiteintel.dev/entity/fd859634-7c8a-57fc-bfc0-9e2a43955bf4
- **TALLIAN PETER J** (officer) — https://whiteintel.dev/entity/ca8e5183-dd1f-5179-8ae9-9e58e85b322e
- **MCCAFFREY JOHN J JR** (officer) — https://whiteintel.dev/entity/b15d57b0-dacb-56d4-b023-822dcccf5da6
- **WANSEM PAUL J VAN DER** (tenpercentowner) — https://whiteintel.dev/entity/fd859634-7c8a-57fc-bfc0-9e2a43955bf4
- **PARKHILL J SAMUEL** (director) — https://whiteintel.dev/entity/31f6f169-bf8a-5af3-b321-7a6c1554539f
- **GRIFFIN JAMES MICHAEL** (officer) — https://whiteintel.dev/entity/35b7c09e-72a6-5001-b177-63e38e38d6b9
- **WANSEM PAUL J VAN DER** (officer) — https://whiteintel.dev/entity/fd859634-7c8a-57fc-bfc0-9e2a43955bf4
- **LOY BERTRAND** (director) — https://whiteintel.dev/entity/01bc1b22-28ef-5b6c-80a9-c86dc6267684
- **WRINN JOSEPH F** (director) — https://whiteintel.dev/entity/eb6bc60f-9651-583c-9dee-893eeeaa9ee8
- **WYMAN G MEAD** (director) — https://whiteintel.dev/entity/53b63fdf-fc74-5206-9877-9cf5a51f6d5c
- **BEARD JOHN E** (director) — https://whiteintel.dev/entity/dbcb1737-6e3b-5867-912b-764e505e2fa4
- **VAN MAAREN JAN PAUL** (officer) — https://whiteintel.dev/entity/2bad4a79-ef6d-5ff0-a951-cd67d7b29c1f
- **KEALY THOMAS P** (officer) — https://whiteintel.dev/entity/667e2774-6bba-5a6a-8840-96d52ceb6184
- **CHU JEFFREY C** (director) — https://whiteintel.dev/entity/6fa08e59-c995-58cc-a240-1bcc0cf22dac
- **NASH THOMAS FRANCIS** (officer) — https://whiteintel.dev/entity/356083dc-4484-55fc-9523-d7bda57cc75e
- **LAWSON DOUGLAS A.** (officer) — https://whiteintel.dev/entity/4258b501-6123-5417-a9a2-d8faf55488b9

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

1. **MARXE AUSTIN W & GREENHOUSE DAVID M** — tenpercentowner → *BTU INTERNATIONAL INC*
1. **AWM Investment Company, Inc.** — tenpercentowner → *BTU INTERNATIONAL INC*
1. **WANSEM PAUL J VAN DER** — director → *BTU INTERNATIONAL INC*
1. **TALLIAN PETER J** — officer → *BTU INTERNATIONAL INC*
1. **MCCAFFREY JOHN J JR** — officer → *BTU INTERNATIONAL INC*
1. **WANSEM PAUL J VAN DER** — tenpercentowner → *BTU INTERNATIONAL INC*
1. **PARKHILL J SAMUEL** — director → *BTU INTERNATIONAL INC*
1. **GRIFFIN JAMES MICHAEL** — officer → *BTU INTERNATIONAL INC*
1. **WANSEM PAUL J VAN DER** — officer → *BTU INTERNATIONAL INC*
1. **LOY BERTRAND** — director → *BTU INTERNATIONAL INC*
1. **WRINN JOSEPH F** — director → *BTU INTERNATIONAL INC*
1. **WYMAN G MEAD** — director → *BTU INTERNATIONAL INC*
1. **BEARD JOHN E** — director → *BTU INTERNATIONAL INC*
1. **VAN MAAREN JAN PAUL** — officer → *BTU INTERNATIONAL INC*
1. **KEALY THOMAS P** — officer → *BTU INTERNATIONAL INC*
1. **CHU JEFFREY C** — director → *BTU INTERNATIONAL INC*
1. **NASH THOMAS FRANCIS** — officer → *BTU INTERNATIONAL INC*
1. **LAWSON DOUGLAS A.** — officer → *BTU INTERNATIONAL INC*

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **BTU INTERNATIONAL INC**. Human view: https://whiteintel.dev/entity/04d1d476-5898-59e4-aa2d-e3f1cb1dca19 · Structured JSON: https://whiteintel.dev/api/public/dossier/04d1d476-5898-59e4-aa2d-e3f1cb1dca19._

_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"._