---
title: "ALTEON INC /DE — Ownership Dossier"
canonical: https://whiteintel.dev/entity/24eee9ce-bb3a-5c8f-9879-1f94fc3cacfc
json: https://whiteintel.dev/api/public/dossier/24eee9ce-bb3a-5c8f-9879-1f94fc3cacfc
identifier: sec:0000878903
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ALTEON INC /DE

**Type:** Company  
**Jurisdiction:** US  
**Identifier:** `sec:0000878903`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/24eee9ce-bb3a-5c8f-9879-1f94fc3cacfc  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/24eee9ce-bb3a-5c8f-9879-1f94fc3cacfc  

## Ownership & control

### Owners / controllers

- **Berkowitz Noah** (officer) — https://whiteintel.dev/entity/432da100-c2a3-5139-a4de-5dc7377695ca
- **D'AMICO ALEX** (officer) — https://whiteintel.dev/entity/446ed0a1-4c90-5384-9b6f-d3a449f1fd38
- **MENDEL CARL M** (officer) — https://whiteintel.dev/entity/3a9f8fda-3982-5fb6-bc80-6a0c1a0b8c80
- **MILICI WENDY ANN** (officer) — https://whiteintel.dev/entity/a0044286-abfc-573d-8576-4525ae7722c2
- **FEDERICI WILLIAM J** (director) — https://whiteintel.dev/entity/5c7f2240-f3af-5673-89ef-c3f5e77ca856
- **Berkowitz Noah** (director) — https://whiteintel.dev/entity/432da100-c2a3-5139-a4de-5dc7377695ca
- **Berkowitz Noah** (tenpercentowner) — https://whiteintel.dev/entity/432da100-c2a3-5139-a4de-5dc7377695ca
- **TANNER MARY C** (director) — https://whiteintel.dev/entity/f868ba06-eee4-56c5-ac7a-8c09b0568ad1
- **YETTER WAYNE P** (director) — https://whiteintel.dev/entity/88377e78-ce85-5058-854f-d7013ef63ddb
- **BEDARD JOHN F** (director) — https://whiteintel.dev/entity/11396a78-b6bf-597f-bac8-ad0d608a0b1d
- **ATTICUS MANAGEMENT LTD** (tenpercentowner) — https://whiteintel.dev/entity/210470b8-47a2-5f00-a1a3-c111ddd4c878
- **BARAKETT TIMOTHY R** (tenpercentowner) — https://whiteintel.dev/entity/0ab81461-924a-54d7-81e3-a344016b3238
- **ATTICUS CAPITAL LP** (tenpercentowner) — https://whiteintel.dev/entity/6626fb20-e661-5e91-b09e-22d4143d2e6d
- **BAKER BIOTECH CAPITAL (GP), LLC** (tenpercentowner) — https://whiteintel.dev/entity/46647a72-2bfa-53b6-b828-8576239f577b
- **14159 CAPITAL (GP), LLC** (tenpercentowner) — https://whiteintel.dev/entity/64c43796-0039-519e-8174-bc7a2cdf3db2
- **BAKER / TISCH CAPITAL (GP), LLC** (tenpercentowner) — https://whiteintel.dev/entity/f990f17a-cce2-5634-bd2e-453124e46759
- **BAKER BIOTECH CAPITAL III (GP), LLC** (tenpercentowner) — https://whiteintel.dev/entity/56dc88ca-9c2c-531b-801f-751daea59e68
- **BAKER FELIX** (tenpercentowner) — https://whiteintel.dev/entity/980331ac-181f-51ff-b75c-5447c0bf6ce1
- **BAKER JULIAN** (tenpercentowner) — https://whiteintel.dev/entity/dacbda6b-8969-5d7f-80c8-b04f77dbe37c
- **BAKER BROS CAPITAL GP LLC** (tenpercentowner) — https://whiteintel.dev/entity/7b54bcdb-db84-526a-8d27-3bdd941420c3
- **ATTICUS CAPITAL LLC** (tenpercentowner) — https://whiteintel.dev/entity/4af51b8f-2ad0-50fe-9fad-9c1ce2a15887
- **MACNAB MALCOLM** (officer) — https://whiteintel.dev/entity/91709d3d-4102-52a0-a4fc-ad68c6d9ae32
- **GENENTECH INC** (tenpercentowner) — https://whiteintel.dev/entity/d3df1b86-e293-5196-a0a1-d9bd5f7f0a88
- **MOCH KENNETH I** (officer) — https://whiteintel.dev/entity/2c13e507-7cca-506f-94af-419f74507679
- **MOORE THOMAS A** (director) — https://whiteintel.dev/entity/94987db7-2e9b-58ba-a49b-4eb30c0f2c2c
- **BRESLOW MARILYN G** (director) — https://whiteintel.dev/entity/6d2e2d92-f014-5e0a-bb85-d54127a2e55b
- **NAIMARK GEORGE M PHD** (director) — https://whiteintel.dev/entity/0510ef94-74ea-59ac-a7f9-63bc885a6271
- **MOCH KENNETH I** (director) — https://whiteintel.dev/entity/2c13e507-7cca-506f-94af-419f74507679

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

A **44-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.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ALTEON INC /DE**. Human view: https://whiteintel.dev/entity/24eee9ce-bb3a-5c8f-9879-1f94fc3cacfc · Structured JSON: https://whiteintel.dev/api/public/dossier/24eee9ce-bb3a-5c8f-9879-1f94fc3cacfc._

_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"._