---
title: "ATLAS VENTURE ASSOCIATES XII, LLC — Ownership Dossier"
canonical: https://whiteintel.dev/entity/7f7b41f8-7602-59ec-baba-7abd3da887eb
json: https://whiteintel.dev/api/public/dossier/7f7b41f8-7602-59ec-baba-7abd3da887eb
identifier: sec:0001845871
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# ATLAS VENTURE ASSOCIATES XII, LLC

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001845871`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/7f7b41f8-7602-59ec-baba-7abd3da887eb  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/7f7b41f8-7602-59ec-baba-7abd3da887eb  

## Ownership & control

### Holdings / subsidiaries

- **Vigil Neuroscience, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/dd4bafe3-c407-5c5a-9484-16d939ab9a60
- **AEROVATE THERAPEUTICS, INC.** (tenpercentowner) — https://whiteintel.dev/entity/0498d804-2189-5885-b4d8-f0171a454d64
- **Disc Medicine, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/6d317465-e113-5fee-9632-915c2579af2d

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **ATLAS VENTURE ASSOCIATES XII, LLC**. Human view: https://whiteintel.dev/entity/7f7b41f8-7602-59ec-baba-7abd3da887eb · Structured JSON: https://whiteintel.dev/api/public/dossier/7f7b41f8-7602-59ec-baba-7abd3da887eb._

_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"._