---
title: "ZYGO CORP — Ownership Dossier"
canonical: https://whiteintel.dev/entity/8017158a-c201-5efb-bb93-e71ad7f0d11b
json: https://whiteintel.dev/api/public/dossier/8017158a-c201-5efb-bb93-e71ad7f0d11b
identifier: sec:0000730716
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ZYGO CORP

**Type:** Company  
**Jurisdiction:** US  
**Identifier:** `sec:0000730716`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/8017158a-c201-5efb-bb93-e71ad7f0d11b  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/8017158a-c201-5efb-bb93-e71ad7f0d11b  

## Ownership & control

### Owners / controllers

- **MCKELVEY ROBERT** (director) — https://whiteintel.dev/entity/21ead00a-47c8-59df-ac6d-f90a286ddc23
- **STONER ROBERT J** (officer) — https://whiteintel.dev/entity/85624f73-ada7-5c36-ba3a-2436cc6e11c4
- **TOMICH JOHN A** (officer) — https://whiteintel.dev/entity/9f52eeab-aecb-5018-a675-f6957548717c
- **VEHLIES MICHAEL M** (officer) — https://whiteintel.dev/entity/dd487871-7469-574a-b166-20292cbb8cba
- **STACK JOHN** (officer) — https://whiteintel.dev/entity/84f6e98c-ab0c-5c65-9a49-7d83b7e63e18
- **LIEBMAN SEYMOUR** (director) — https://whiteintel.dev/entity/9fc5dc92-f6f7-535b-a643-8ac2ddf12917
- **FANTONE STEPHEN D** (director) — https://whiteintel.dev/entity/e5811147-b756-59a0-b44e-70642f8b80d6
- **WALLACE CAROL P** (director) — https://whiteintel.dev/entity/57109f46-55cf-5ebd-974f-947dd66ce02f
- **MAK-RO CAPITAL MASTER FUND LP** (tenpercentowner) — https://whiteintel.dev/entity/aa5f661d-dd6f-5d2d-8673-9edc9537f476
- **FULLER SAMUEL** (director) — https://whiteintel.dev/entity/0c91cfba-323c-58bb-9fc5-2f2402b98a1c
- **KAUFMAN MICHAEL A** (director) — https://whiteintel.dev/entity/fc3029d2-5687-59a8-b50b-4dd6035e4d57
- **ALLAN ANTHONY** (officer) — https://whiteintel.dev/entity/55ce3769-adeb-5022-9f4c-1bc4388ee3e2
- **WILLIS GARY K** (officer) — https://whiteintel.dev/entity/7b8bc85e-9f2d-57fb-a20c-b03741a1e8db
- **WILLIS GARY K** (director) — https://whiteintel.dev/entity/7b8bc85e-9f2d-57fb-a20c-b03741a1e8db
- **MAK CAPITAL FUND LP** (tenpercentowner) — https://whiteintel.dev/entity/cf886738-3e91-5604-b503-428752c98035
- **JORDAN JOHN P** (officer) — https://whiteintel.dev/entity/8277ef42-6b53-5870-96f4-0f0271f32a82
- **PALOMA INTERNATIONAL L P** (tenpercentowner) — https://whiteintel.dev/entity/c3dc5875-c2fc-5235-82e6-fd4d1d1d98d2
- **SUSSMAN S DONALD** (tenpercentowner) — https://whiteintel.dev/entity/ef596070-3b25-55da-a953-d97e2805ed2d
- **MAK CAPITAL** (tenpercentowner) — https://whiteintel.dev/entity/b2bb5d3e-0c87-562c-9a84-9303ded651d3
- **KAUFMAN MICHAEL A** (tenpercentowner) — https://whiteintel.dev/entity/fc3029d2-5687-59a8-b50b-4dd6035e4d57
- **BACON WILLIAM** (officer) — https://whiteintel.dev/entity/25e80308-32c1-5878-bc9d-fd669ba84602
- **BASILA DAVID** (officer) — https://whiteintel.dev/entity/a6f90361-bc53-538e-a8fa-07aaa3bacbb4
- **KOLIOPOULOS CHRIS L.** (director) — https://whiteintel.dev/entity/93f45302-a88d-5f8e-ba85-ea2e1adca239
- **KOLIOPOULOS CHRIS L.** (officer) — https://whiteintel.dev/entity/93f45302-a88d-5f8e-ba85-ea2e1adca239
- **TAYLOR ROBERT** (director) — https://whiteintel.dev/entity/684cff5f-c9c6-537a-bb8e-b7f1ee9d9cf5
- **ECCLESTON DOUGLAS J** (officer) — https://whiteintel.dev/entity/0c25e8a0-6568-5498-bfb8-f74a38d72ee5
- **PERSON DAVID** (officer) — https://whiteintel.dev/entity/c141eaf1-3ccd-578a-ad6b-2e8ca27bf1d7
- **SHEPHARD WALTER A** (officer) — https://whiteintel.dev/entity/62d5c398-16ac-50a4-8e1d-b4674a6f9154
- **WORSTER BRUCE** (director) — https://whiteintel.dev/entity/fafaad68-b07d-5ea7-a91d-edbcce16e890
- **BANUCCI EUGENE** (director) — https://whiteintel.dev/entity/969942d6-3090-523f-a601-edcf94651f22
- **MAK-RO ASSET MANAGEMENT LP** (tenpercentowner) — https://whiteintel.dev/entity/eb3ac18f-d77f-56ce-8371-aa5be0648a0b
- **J BRUCE ROBINSON** (officer) — https://whiteintel.dev/entity/b5f8d386-54b4-501c-8e1d-6d01ad1606ca
- **ZANONI CARL** (director) — https://whiteintel.dev/entity/977581dd-0f0e-57d5-93d9-2abdb6f0ffda
- **NORTHUP JAMES R** (officer) — https://whiteintel.dev/entity/41d5ced2-a9c3-5046-86a6-50bd6e2190f4
- **ZANONI CARL** (officer) — https://whiteintel.dev/entity/977581dd-0f0e-57d5-93d9-2abdb6f0ffda
- **EL MANSY YOUSSEF A** (director) — https://whiteintel.dev/entity/18f8a1d1-3f22-5032-9113-88ad069ed027
- **MONTI BRIAN** (officer) — https://whiteintel.dev/entity/82b3786d-5068-5b07-b569-a6bae16c7bbb
- **STONER ROBERT J** (other) — https://whiteintel.dev/entity/85624f73-ada7-5c36-ba3a-2436cc6e11c4
- **FORMAN PAUL** (director) — https://whiteintel.dev/entity/c520a4df-2577-55ce-ac8e-60a160db1eb6

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

1. **MCKELVEY ROBERT** — director → *ZYGO CORP*
1. **STONER ROBERT J** — officer → *ZYGO CORP*
1. **TOMICH JOHN A** — officer → *ZYGO CORP*
1. **VEHLIES MICHAEL M** — officer → *ZYGO CORP*
1. **STACK JOHN** — officer → *ZYGO CORP*
1. **LIEBMAN SEYMOUR** — director → *ZYGO CORP*
1. **FANTONE STEPHEN D** — director → *ZYGO CORP*
1. **WALLACE CAROL P** — director → *ZYGO CORP*
1. **MAK-RO CAPITAL MASTER FUND LP** — tenpercentowner → *ZYGO CORP*
1. **FULLER SAMUEL** — director → *ZYGO CORP*
1. **KAUFMAN MICHAEL A** — director → *ZYGO CORP*
1. **ALLAN ANTHONY** — officer → *ZYGO CORP*
1. **WILLIS GARY K** — officer → *ZYGO CORP*
1. **WILLIS GARY K** — director → *ZYGO CORP*
1. **MAK CAPITAL FUND LP** — tenpercentowner → *ZYGO CORP*
1. **JORDAN JOHN P** — officer → *ZYGO CORP*
1. **PALOMA INTERNATIONAL L P** — tenpercentowner → *ZYGO CORP*
1. **SUSSMAN S DONALD** — tenpercentowner → *ZYGO CORP*
1. **MAK CAPITAL** — tenpercentowner → *ZYGO CORP*
1. **KAUFMAN MICHAEL A** — tenpercentowner → *ZYGO CORP*
1. **BACON WILLIAM** — officer → *ZYGO CORP*
1. **BASILA DAVID** — officer → *ZYGO CORP*
1. **KOLIOPOULOS CHRIS L.** — director → *ZYGO CORP*
1. **KOLIOPOULOS CHRIS L.** — officer → *ZYGO CORP*
1. **TAYLOR ROBERT** — director → *ZYGO CORP*
1. **ECCLESTON DOUGLAS J** — officer → *ZYGO CORP*
1. **PERSON DAVID** — officer → *ZYGO CORP*
1. **SHEPHARD WALTER A** — officer → *ZYGO CORP*
1. **WORSTER BRUCE** — director → *ZYGO CORP*
1. **BANUCCI EUGENE** — director → *ZYGO CORP*
1. **MAK-RO ASSET MANAGEMENT LP** — tenpercentowner → *ZYGO CORP*
1. **J BRUCE ROBINSON** — officer → *ZYGO CORP*
1. **ZANONI CARL** — director → *ZYGO CORP*
1. **NORTHUP JAMES R** — officer → *ZYGO CORP*
1. **ZANONI CARL** — officer → *ZYGO CORP*
1. **EL MANSY YOUSSEF A** — director → *ZYGO CORP*
1. **MONTI BRIAN** — officer → *ZYGO CORP*
1. **STONER ROBERT J** — other → *ZYGO CORP*
1. **FORMAN PAUL** — director → *ZYGO CORP*

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ZYGO CORP**. Human view: https://whiteintel.dev/entity/8017158a-c201-5efb-bb93-e71ad7f0d11b · Structured JSON: https://whiteintel.dev/api/public/dossier/8017158a-c201-5efb-bb93-e71ad7f0d11b._

_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"._