---
title: "Hagen Brett R — Ownership Dossier"
canonical: https://whiteintel.dev/entity/b1f6d332-65a9-5501-b7d4-e05f7a5ecf77
json: https://whiteintel.dev/api/public/dossier/b1f6d332-65a9-5501-b7d4-e05f7a5ecf77
identifier: sec:0001681782
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# Hagen Brett R

**Type:** Person  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001681782`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/b1f6d332-65a9-5501-b7d4-e05f7a5ecf77  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/b1f6d332-65a9-5501-b7d4-e05f7a5ecf77  

## Ownership & control

### Holdings / subsidiaries

- **Kalaris Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/de4c956a-976e-5209-89f2-2f72662ee99d
- **Kalaris Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/de4c956a-976e-5209-89f2-2f72662ee99d
- **Kalaris Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/de4c956a-976e-5209-89f2-2f72662ee99d
- **Kalaris Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/de4c956a-976e-5209-89f2-2f72662ee99d
- **Kalaris Therapeutics, Inc.** (officer) — https://whiteintel.dev/entity/de4c956a-976e-5209-89f2-2f72662ee99d
- **KINETA, INC./DE** (officer) — https://whiteintel.dev/entity/4dd181ee-17d5-53c8-bb79-9bbeeebd1df6

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Hagen Brett R**. Human view: https://whiteintel.dev/entity/b1f6d332-65a9-5501-b7d4-e05f7a5ecf77 · Structured JSON: https://whiteintel.dev/api/public/dossier/b1f6d332-65a9-5501-b7d4-e05f7a5ecf77._

_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"._