---
title: "CONSTANTINIDES COSTAS — Ownership Dossier"
canonical: https://whiteintel.dev/entity/41cfcd08-4007-50a4-bb4e-5391c8858ecb
json: https://whiteintel.dev/api/public/dossier/41cfcd08-4007-50a4-bb4e-5391c8858ecb
identifier: sec:0001999936
jurisdiction: US
risk: Low
source: WhiteIntel corporate-ownership graph
---

# CONSTANTINIDES COSTAS

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001999936`  
**Risk level:** Low  
**Canonical dossier:** https://whiteintel.dev/entity/41cfcd08-4007-50a4-bb4e-5391c8858ecb  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/41cfcd08-4007-50a4-bb4e-5391c8858ecb  

## Ownership & control

### Holdings / subsidiaries

- **Mersana Therapeutics, Inc.** (tenpercentowner) — https://whiteintel.dev/entity/4edf03d1-5dc7-5d54-bee4-8e5ea9d963bc

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **CONSTANTINIDES COSTAS**. Human view: https://whiteintel.dev/entity/41cfcd08-4007-50a4-bb4e-5391c8858ecb · Structured JSON: https://whiteintel.dev/api/public/dossier/41cfcd08-4007-50a4-bb4e-5391c8858ecb._

_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"._