---
title: "HARPER SEAN E — Ownership Dossier"
canonical: https://whiteintel.dev/entity/1346a4aa-d36c-52a6-a2f8-0cf62c58cd78
json: https://whiteintel.dev/api/public/dossier/1346a4aa-d36c-52a6-a2f8-0cf62c58cd78
identifier: sec:0001541946
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# HARPER SEAN E

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001541946`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/1346a4aa-d36c-52a6-a2f8-0cf62c58cd78  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/1346a4aa-d36c-52a6-a2f8-0cf62c58cd78  

## Ownership & control

### Holdings / subsidiaries

- **Kyverna Therapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/f0d67aac-4707-507f-88b3-33747c372407
- **ACELYRIN, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/c6f49748-e2c3-5631-8a94-6709729e393b
- **AMGEN INC** (officer) — https://whiteintel.dev/entity/2df541d6-6f5e-5de3-8f54-0253cab77f19
- **CANCERVAX CORP** (director) — https://whiteintel.dev/entity/e0382eb7-87e4-5966-8981-11f2bdac98d8

## 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 **HARPER SEAN E** — https://whiteintel.dev/entity/1346a4aa-d36c-52a6-a2f8-0cf62c58cd78 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **HARPER SEAN E**. Human view: https://whiteintel.dev/entity/1346a4aa-d36c-52a6-a2f8-0cf62c58cd78 · Structured JSON: https://whiteintel.dev/api/public/dossier/1346a4aa-d36c-52a6-a2f8-0cf62c58cd78._

_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"._