---
title: "SIRTRIS PHARMACEUTICALS, INC. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/481dd879-c533-54a5-93ae-d5cf80ac8abb
json: https://whiteintel.dev/api/public/dossier/481dd879-c533-54a5-93ae-d5cf80ac8abb
identifier: sec:0001388775
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# SIRTRIS PHARMACEUTICALS, INC.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001388775`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/481dd879-c533-54a5-93ae-d5cf80ac8abb  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/481dd879-c533-54a5-93ae-d5cf80ac8abb  

## Ownership & control

### Owners / controllers

- **POLARIS VENTURE MANAGEMENT CO IV LLC** (tenpercentowner) — https://whiteintel.dev/entity/d0e3c7e0-210d-5e70-976d-e4505dc20b17
- **FLINT JONATHAN A** (tenpercentowner) — https://whiteintel.dev/entity/27878baa-36d1-50d7-8c46-4cf2ee814ae8
- **POLARIS VENTURE PARTNERS IV LP** (tenpercentowner) — https://whiteintel.dev/entity/8c597887-b935-5aa9-8db5-2df13f13c2c4
- **SPOON ALAN G** (tenpercentowner) — https://whiteintel.dev/entity/25412de9-d2f6-542c-ad76-717909bd005e
- **POLARIS VENTURE PARTNERS ENTREPRENEURS FUND IV LP** (tenpercentowner) — https://whiteintel.dev/entity/7b16087f-5b58-53c0-9f01-e0aa2d3921f2
- **MCGUIRE TERRANCE** (tenpercentowner) — https://whiteintel.dev/entity/11ad993b-f7e2-5ee4-aa7b-888df479cafe
- **HENRY JOHN WILLIAM** (tenpercentowner) — https://whiteintel.dev/entity/9f22d31e-5297-56b8-8bc1-ce9cc09543cf
- **TVM V LIFE SCIENCE VENTURES MANAGEMENT GMBH & CO. KG** (tenpercentowner) — https://whiteintel.dev/entity/f90972e0-15e6-56dd-8532-bb9e18cb33a4
- **TVM V LIFE SCIENCE VENTURES GMBH & CO KG** (tenpercentowner) — https://whiteintel.dev/entity/9352a40c-6425-5e88-aeb3-6e02dc4bb0e6

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

A **25-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 **SIRTRIS PHARMACEUTICALS, INC.** — https://whiteintel.dev/entity/481dd879-c533-54a5-93ae-d5cf80ac8abb · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **SIRTRIS PHARMACEUTICALS, INC.**. Human view: https://whiteintel.dev/entity/481dd879-c533-54a5-93ae-d5cf80ac8abb · Structured JSON: https://whiteintel.dev/api/public/dossier/481dd879-c533-54a5-93ae-d5cf80ac8abb._

_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"._