---
title: "GILLIS STEVEN — Ownership Dossier"
canonical: https://whiteintel.dev/entity/48b1470b-6cc8-554f-a9ed-de2b29ae4c64
json: https://whiteintel.dev/api/public/dossier/48b1470b-6cc8-554f-a9ed-de2b29ae4c64
identifier: sec:0001229592
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# GILLIS STEVEN

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001229592`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/48b1470b-6cc8-554f-a9ed-de2b29ae4c64  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/48b1470b-6cc8-554f-a9ed-de2b29ae4c64  

## Ownership & control

### Holdings / subsidiaries

- **Metsera, Inc.** (10% owner) — https://whiteintel.dev/entity/545e3c76-456f-5273-ab91-538a1a34ba68
- **Metsera, Inc.** (10% owner) — https://whiteintel.dev/entity/545e3c76-456f-5273-ab91-538a1a34ba68
- **Maze Therapeutics, Inc.** (10% owner) — https://whiteintel.dev/entity/dd91eb35-a8ad-5def-97d9-315d460750d5
- **SEAPORT THERAPEUTICS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/1d64b77d-e11f-54cc-9a08-50d627926fcb
- **KARDIGAN, INC.** (director) — https://whiteintel.dev/entity/713e6c89-10c4-5a70-9f1d-70e829db1a7c
- **KARDIGAN, INC.** (tenpercentowner) — https://whiteintel.dev/entity/713e6c89-10c4-5a70-9f1d-70e829db1a7c
- **TAKEDA PHARMACEUTICAL CO LTD** (director) — https://whiteintel.dev/entity/4bf315f3-ff14-5761-9d53-c9dd75c5da78
- **Lyell Immunopharma, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/eeb1283f-805a-5e39-98c5-0756afaf7715
- **Metsera, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/545e3c76-456f-5273-ab91-538a1a34ba68
- **Metsera, Inc.** (director) — https://whiteintel.dev/entity/545e3c76-456f-5273-ab91-538a1a34ba68
- **Neumora Therapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/1215113d-0999-5daf-9908-343ef157702c
- **Prime Medicine, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/88ba017d-558f-5834-9839-6564794aca6f

…and **20** more subsidiaries/holdings. Resolve the full list with `get_dossier` on the WhiteIntel MCP (`npx -y @whiteintel/mcp-server`) 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 **GILLIS STEVEN** — https://whiteintel.dev/entity/48b1470b-6cc8-554f-a9ed-de2b29ae4c64 · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **GILLIS STEVEN**. Human view: https://whiteintel.dev/entity/48b1470b-6cc8-554f-a9ed-de2b29ae4c64 · Structured JSON: https://whiteintel.dev/api/public/dossier/48b1470b-6cc8-554f-a9ed-de2b29ae4c64._

_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"._