---
title: "KOS PHARMACEUTICALS INC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/8d6cb76c-e1b5-5a7b-92df-8638ccf65850
json: https://whiteintel.dev/api/public/dossier/8d6cb76c-e1b5-5a7b-92df-8638ccf65850
identifier: sec:0001018952
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# KOS PHARMACEUTICALS INC

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001018952`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/8d6cb76c-e1b5-5a7b-92df-8638ccf65850  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/8d6cb76c-e1b5-5a7b-92df-8638ccf65850  

## Ownership & control

### Owners / controllers

- **JAHARIS MARY** (tenpercentowner) — https://whiteintel.dev/entity/47c6c359-56aa-5eae-b7f1-8af8e4357c6e
- **JAHARIS MICHAEL** (tenpercentowner) — https://whiteintel.dev/entity/478f4f95-8c49-5996-b58d-f7fb32432a78
- **JAHARIS STEVEN** (tenpercentowner) — https://whiteintel.dev/entity/0204ccd4-4a8a-52a1-b877-aac7a607d1df
- **WILSON POINT HOLDINGS LP** (tenpercentowner) — https://whiteintel.dev/entity/e76889f0-c86f-593b-a59d-4910f438cb82
- **JAHARIS HOLDINGS, LLC** (tenpercentowner) — https://whiteintel.dev/entity/85409dcc-f6b1-5c39-8080-ae4d42460937
- **STEVEN JAHARIS GENERATIONAL TRUST** (tenpercentowner) — https://whiteintel.dev/entity/f4ff5aba-4901-5af6-98fe-bc229f70881b
- **CUBS MANAGEMENT LLC** (tenpercentowner) — https://whiteintel.dev/entity/9b3fc262-27c1-5a5b-a91f-11639a66f1b3
- **JAHARIS KATHRYN** (tenpercentowner) — https://whiteintel.dev/entity/6191a514-29af-55ab-9973-15dab972c3cf
- **JAHARIS FAMILY FOUNDATION, INC.** (tenpercentowner) — https://whiteintel.dev/entity/553c77bd-1027-5865-bf7a-13adb275dd46

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

A **27-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 **KOS PHARMACEUTICALS INC** — https://whiteintel.dev/entity/8d6cb76c-e1b5-5a7b-92df-8638ccf65850 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **KOS PHARMACEUTICALS INC**. Human view: https://whiteintel.dev/entity/8d6cb76c-e1b5-5a7b-92df-8638ccf65850 · Structured JSON: https://whiteintel.dev/api/public/dossier/8d6cb76c-e1b5-5a7b-92df-8638ccf65850._

_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"._