---
title: "PENWEST PHARMACEUTICALS CO — Ownership Dossier"
canonical: https://whiteintel.dev/entity/e030e871-80e8-56c8-a0ce-e42a0b54a076
json: https://whiteintel.dev/api/public/dossier/e030e871-80e8-56c8-a0ce-e42a0b54a076
identifier: sec:0001047188
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# PENWEST PHARMACEUTICALS CO

**Type:** Company  
**Jurisdiction:** US  
**Identifier:** `sec:0001047188`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/e030e871-80e8-56c8-a0ce-e42a0b54a076  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/e030e871-80e8-56c8-a0ce-e42a0b54a076  

## Ownership & control

### Owners / controllers

- **HENEL ROLF H** (director) — https://whiteintel.dev/entity/150bea85-5eb1-5627-98cb-ef9bbd66d979
- **DRAKE PETER F** (director) — https://whiteintel.dev/entity/ccdfa7fb-f87c-59b9-be38-bae413c54f31
- **HENNESSEY ROBERT** (director) — https://whiteintel.dev/entity/9e0f9f0f-f22a-5413-969d-df53772880c1
- **FREIMAN PAUL E** (director) — https://whiteintel.dev/entity/57935509-d5f8-5c7b-b311-bb44c7dab853
- **VANLENT ANNE** (director) — https://whiteintel.dev/entity/7b1d753f-edce-51e5-9fa8-de23f88162e7
- **STANIFORTH JOHN N** (director) — https://whiteintel.dev/entity/1e9c88a8-a480-5d58-b6be-2f1c6e74de34
- **GOOD JENNIFER L** (officer) — https://whiteintel.dev/entity/79708daf-3f23-575f-8afc-147ece11eea0
- **JOSLYN ALAN** (officer) — https://whiteintel.dev/entity/5387e643-ee62-540b-aee2-320813b4e69c
- **BAICHWAL ANAND** (officer) — https://whiteintel.dev/entity/079444e2-8380-5344-bee1-a61059279184
- **SCIASCIA THOMAS** (officer) — https://whiteintel.dev/entity/70b46d60-f9e5-5bf5-bc95-c8c1b891e038
- **HAWI AMALE** (officer) — https://whiteintel.dev/entity/71218f05-4d23-559a-8ec7-60fbbee67cca
- **WEST ACQUISITION CORP.** (tenpercentowner) — https://whiteintel.dev/entity/9e8d39b1-61e4-5a1a-8a74-be60849e2f2c
- **ENDO HEALTH SOLUTIONS INC.** (tenpercentowner) — https://whiteintel.dev/entity/9d7baf6e-899e-55c8-b9d8-c0a0476e2b5e
- **MUSCOLO FRANK P** (officer) — https://whiteintel.dev/entity/44e6ad4f-23fb-5d82-82ea-869c3a0e159d
- **TANG CAPITAL MANAGEMENT LLC** (tenpercentowner) — https://whiteintel.dev/entity/bd0d3b74-e284-5be3-82a7-08bc162ca3ad
- **PERCEPTIVE LIFE SCIENCES MASTER FUND LTD** (tenpercentowner) — https://whiteintel.dev/entity/17df1447-8e78-54c4-ab7f-0683d3696b4b
- **ZARRABIAN SAIID** (director) — https://whiteintel.dev/entity/cacdda43-d8f3-555e-9c0f-eabc916f57c6
- **Meeker David P** (director) — https://whiteintel.dev/entity/cf23f13e-a33b-56a0-8ace-5a1e1ff98df3
- **LEMKEY JOHN G** (director) — https://whiteintel.dev/entity/30c0e5f6-1e60-5026-84bd-94b421b295aa
- **TANG KEVIN** (tenpercentownerother) — https://whiteintel.dev/entity/80abbfc2-d5d8-5676-95a3-3e4b69c47d21
- **WONG RODERICK** (director) — https://whiteintel.dev/entity/17ef0bde-37cb-5b41-a749-ff04fce23f42
- **TANG CAPITAL PARTNERS LP** (tenpercentowner) — https://whiteintel.dev/entity/7febd5d6-ba93-5ff6-b431-3bd25c63e2b6
- **PERCEPTIVE ADVISORS LLC** (tenpercentowner) — https://whiteintel.dev/entity/f12e0494-bd9a-513c-8e39-f22ab09d9177
- **GOOD JENNIFER L** (director) — https://whiteintel.dev/entity/79708daf-3f23-575f-8afc-147ece11eea0
- **BIANCHI CHRISTOPHE** (director) — https://whiteintel.dev/entity/e35ea35d-d61d-516b-acc3-c4079fedb5f7
- **HAYES PAUL F** (officer) — https://whiteintel.dev/entity/43a69ae5-ef7c-5383-9ab5-0c45b6ea586a
- **OSHEA WILLIAM J** (director) — https://whiteintel.dev/entity/2c0c10ca-c043-5329-9e15-52301cf7a150
- **TANG KEVIN** (tenpercentowner) — https://whiteintel.dev/entity/80abbfc2-d5d8-5676-95a3-3e4b69c47d21
- **EDELMAN JOSEPH** (tenpercentowner) — https://whiteintel.dev/entity/7d66b2a7-5380-54e8-bc5d-469b0571dc2f
- **Palleiko Benjamin L** (officer) — https://whiteintel.dev/entity/c954491d-1a29-5a3d-82e6-8bf88da8b3ba
- **BRADLEY SCOTT** (tenpercentowner) — https://whiteintel.dev/entity/455deee8-45ce-57c6-8d28-85ffb38ae8f0
- **CHO MICHAEL** (tenpercentowner) — https://whiteintel.dev/entity/e6cda520-c061-5520-a056-a1b07b7bfe0c

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

1. **HENEL ROLF H** — director → *PENWEST PHARMACEUTICALS CO*
1. **DRAKE PETER F** — director → *PENWEST PHARMACEUTICALS CO*
1. **HENNESSEY ROBERT** — director → *PENWEST PHARMACEUTICALS CO*
1. **FREIMAN PAUL E** — director → *PENWEST PHARMACEUTICALS CO*
1. **VANLENT ANNE** — director → *PENWEST PHARMACEUTICALS CO*
1. **STANIFORTH JOHN N** — director → *PENWEST PHARMACEUTICALS CO*
1. **GOOD JENNIFER L** — officer → *PENWEST PHARMACEUTICALS CO*
1. **JOSLYN ALAN** — officer → *PENWEST PHARMACEUTICALS CO*
1. **BAICHWAL ANAND** — officer → *PENWEST PHARMACEUTICALS CO*
1. **SCIASCIA THOMAS** — officer → *PENWEST PHARMACEUTICALS CO*
1. **HAWI AMALE** — officer → *PENWEST PHARMACEUTICALS CO*
1. **WEST ACQUISITION CORP.** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **ENDO HEALTH SOLUTIONS INC.** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **MUSCOLO FRANK P** — officer → *PENWEST PHARMACEUTICALS CO*
1. **TANG CAPITAL MANAGEMENT LLC** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **PERCEPTIVE LIFE SCIENCES MASTER FUND LTD** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **ZARRABIAN SAIID** — director → *PENWEST PHARMACEUTICALS CO*
1. **Meeker David P** — director → *PENWEST PHARMACEUTICALS CO*
1. **LEMKEY JOHN G** — director → *PENWEST PHARMACEUTICALS CO*
1. **TANG KEVIN** — tenpercentownerother → *PENWEST PHARMACEUTICALS CO*
1. **WONG RODERICK** — director → *PENWEST PHARMACEUTICALS CO*
1. **TANG CAPITAL PARTNERS LP** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **PERCEPTIVE ADVISORS LLC** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **GOOD JENNIFER L** — director → *PENWEST PHARMACEUTICALS CO*
1. **BIANCHI CHRISTOPHE** — director → *PENWEST PHARMACEUTICALS CO*
1. **HAYES PAUL F** — officer → *PENWEST PHARMACEUTICALS CO*
1. **OSHEA WILLIAM J** — director → *PENWEST PHARMACEUTICALS CO*
1. **TANG KEVIN** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **EDELMAN JOSEPH** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **Palleiko Benjamin L** — officer → *PENWEST PHARMACEUTICALS CO*
1. **BRADLEY SCOTT** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
1. **CHO MICHAEL** — tenpercentowner → *PENWEST PHARMACEUTICALS CO*
2. **CLINGEN BRIAN T** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **MANOGUE CAROLINE B** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **LOVERRO FRANK J** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **SCHUCHERT JOSEPH S** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **KELSO EQUITY PARTNERS V L P** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **KELSO INVESTMENT ASSOC V L P** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **BERNEY PHILIP E** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **CLINGEN BRIAN T** — other → *ENDO HEALTH SOLUTIONS INC.*
2. **O DONNELL JOSEPH T JR** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **KELSO EQUITY PARTNERS V L P** — other → *ENDO HEALTH SOLUTIONS INC.*
2. **KELSO PARTNERS V L P** — other → *ENDO HEALTH SOLUTIONS INC.*
2. **LOVERRO FRANK J** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **ENDO PHARMA LLC** — other → *ENDO HEALTH SOLUTIONS INC.*
2. **LEE DAVID A H** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **WAHRHAFTIG DAVID I** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **LANKAU PETER A** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **CONNORS JAMES J II** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **BYNUM FRANK K** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **AMMON CAROL A** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **ENDO PHARMA LLC** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **GOLDBERG MICHAEL B** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **WALL THOMAS R IV** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **HYATT MICHAEL** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **KELSO INVESTMENT ASSOC V L P** — other → *ENDO HEALTH SOLUTIONS INC.*
2. **NICKELL FRANK T** — other → *ENDO HEALTH SOLUTIONS INC.*
2. **MATELICH GEORGE E** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **DELUCCA JOHN** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **KIMMEL ROGER H** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **MEANWELL CLIVE** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **NICKELL FRANK T** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **MITCHELL MICHAEL W** — other → *ENDO HEALTH SOLUTIONS INC.*
2. **LANKAU PETER A** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **KELSO PARTNERS V L P** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **WAHRHAFTIG DAVID I** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **GOLDBERG MICHAEL B** — tenpercentowner → *ENDO HEALTH SOLUTIONS INC.*
2. **MITCHELL MICHAEL W** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **BLACK JEFFREY R** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **DEGOLYER DONALD W** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **NASH DAVID** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **SPENGLER WILLIAM** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **SMITH JILL D.** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **GERGEL IVAN** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **FARHAT CAMILLE** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **RUDIO DANIEL** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **MONTAGUE WILLIAM P** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **Upadhyay Suketu** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **DE SILVA RAJIV** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **DE SILVA RAJIV** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **HUTSON NANCY J** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **HIGGINS ARTHUR J** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **LEVIN ALAN G** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **HOLVECK DAVID** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **Scodari Joseph C** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **MCHUGH JULIE** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **HOLVECK DAVID** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **SWEENEY EDWARD J** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **D. E. SHAW & CO, L.P.** — tenpercentownerother → *ENDO HEALTH SOLUTIONS INC.*
2. **D. E. SHAW VALENCE PORTFOLIOS, L.L.C.** — tenpercentownerother → *ENDO HEALTH SOLUTIONS INC.*
2. **SHAW DAVID E** — tenpercentownerother → *ENDO HEALTH SOLUTIONS INC.*
2. **Wysenski Nancy** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **DE ROSEN MICHEL** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **Rowland Charles A Jr** — officer → *ENDO HEALTH SOLUTIONS INC.*
2. **HORNER GEORGE F III** — director → *ENDO HEALTH SOLUTIONS INC.*
2. **LAVISCOUNT JOYCE N** — officer → *ENDO HEALTH SOLUTIONS INC.*

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **PENWEST PHARMACEUTICALS CO**. Human view: https://whiteintel.dev/entity/e030e871-80e8-56c8-a0ce-e42a0b54a076 · Structured JSON: https://whiteintel.dev/api/public/dossier/e030e871-80e8-56c8-a0ce-e42a0b54a076._

_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"._