---
title: "Atara Biotherapeutics, Inc. — Ownership Dossier"
canonical: https://whiteintel.dev/entity/8a5507e4-9c1c-5edd-82c9-7075a400f0ab
json: https://whiteintel.dev/api/public/dossier/8a5507e4-9c1c-5edd-82c9-7075a400f0ab
identifier: sec:0001604464
jurisdiction: US
risk: Medium
source: WhiteIntel corporate-ownership graph
---

# Atara Biotherapeutics, Inc.

**Type:** Company  
**Jurisdiction:** [US](https://whiteintel.dev/jurisdictions/us)  
**Identifier:** `sec:0001604464`  
**Risk level:** Medium  
**Canonical dossier:** https://whiteintel.dev/entity/8a5507e4-9c1c-5edd-82c9-7075a400f0ab  
**Structured JSON / MCP:** https://whiteintel.dev/api/public/dossier/8a5507e4-9c1c-5edd-82c9-7075a400f0ab  

## Ownership & control

### Owners / controllers

- **EcoR1 Capital, LLC** (tenpercentowner) — https://whiteintel.dev/entity/5197a8ea-a950-5bff-9f38-fe74782a4027
- **PANACEA INNOVATION LTD** (tenpercentowner) — https://whiteintel.dev/entity/7702c6a8-78cc-51d7-9eb2-66570c2076b6
- **HUANG JAMES** (tenpercentowner) — https://whiteintel.dev/entity/a712f955-14d5-5c47-ab91-e3f781dd8734
- **CIONGOLI GREGORY AUSTIN** (tenpercentowner) — https://whiteintel.dev/entity/71adf525-8515-51f9-b1f9-c6c90dd9af2f
- **ADIUMENTUM CAPITAL FUND I LP** (tenpercentowner) — https://whiteintel.dev/entity/e6d1b235-bfbe-5a86-a7f8-a43ef3fce127
- **ADIUMENTUM CAPITAL FUND I GP LLC** (tenpercentowner) — https://whiteintel.dev/entity/6f15a6ba-1197-5c5a-bb5f-bfd7c838e00f
- **KLEINER PERKINS CAUFIELD & BYERS XV, LLC** (tenpercentowner) — https://whiteintel.dev/entity/2c334187-80f1-58f9-a9c6-486c90d096ba
- **KPCB XV ASSOCIATES, LLC** (tenpercentowner) — https://whiteintel.dev/entity/30015a5c-e856-5b47-a2fe-e1828c63b647
- **KPCB XV FOUNDERS FUND, LLC** (tenpercentowner) — https://whiteintel.dev/entity/8faebe1c-6eaf-53d5-93d8-f836104ddf9d
- **SEIDENBERG BETH C** (tenpercentowner) — https://whiteintel.dev/entity/4e079dba-4a8d-566d-af6a-4bf35e8ca03d
- **DAG VENTURES V-QP, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/e9b66073-9f46-5ab5-8065-d1cac27807ab
- **VITULLO NICOLE** (tenpercentowner) — https://whiteintel.dev/entity/c26d7a52-2a97-58d3-a153-75918c4bfc0c
- **TREU JESSE I** (tenpercentowner) — https://whiteintel.dev/entity/94336166-ffdb-564e-a5d6-590b3895d5b4
- **CHUNG YOUNG J.** (tenpercentowner) — https://whiteintel.dev/entity/f27b1aa0-87ec-507a-adb1-1e4e85e30a8f
- **DAG VENTURES MANAGEMENT V, LLC** (tenpercentowner) — https://whiteintel.dev/entity/b0294cef-3a02-5db4-8a2f-c2504bed57c2
- **DOMAIN PARTNERS VIII, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/722215e1-57b9-5c7a-b012-c3bc9f30e12c
- **DOVEY BRIAN H** (tenpercentowner) — https://whiteintel.dev/entity/4fa90898-ede5-5281-9ef1-80c31f96666b
- **PIANIM NICHOLAS K.** (tenpercentowner) — https://whiteintel.dev/entity/5a995986-65fa-50a5-b778-f9f5f5dd45de
- **CADEDDU JOHN J.** (tenpercentowner) — https://whiteintel.dev/entity/33e42ace-bddb-54f9-958e-e886c68135c4
- **WILLIAMS GREG** (tenpercentowner) — https://whiteintel.dev/entity/5df64136-0c0d-5d1b-8df8-26325ca09f9a
- **BLAIR JAMES C** (tenpercentowner) — https://whiteintel.dev/entity/fe5d7eaa-43d6-5432-b3ae-231b36986dfb
- **SCHOEMAKER KATHLEEN K** (tenpercentowner) — https://whiteintel.dev/entity/8e044ef1-0851-58b4-8e62-8617a75f0dee
- **DAG VENTURES V, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/4c5f2313-2d9f-5dd4-9dd5-828410090fd4
- **GOODRICH R. THOMAS** (tenpercentowner) — https://whiteintel.dev/entity/0aa12e91-8c8e-507d-bf08-6f620d5921af
- **DP VIII ASSOCIATES, L.P.** (tenpercentowner) — https://whiteintel.dev/entity/9d908bde-6dbb-5eb3-806c-c8ded7f31b94
- **HALAK BRIAN K** (tenpercentowner) — https://whiteintel.dev/entity/85b0d838-41cd-5c89-9cee-5614145241a2

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

A **77-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 **Atara Biotherapeutics, Inc.** — https://whiteintel.dev/entity/8a5507e4-9c1c-5edd-82c9-7075a400f0ab · pricing https://whiteintel.dev/pricing.

---

_This is the markdown-for-agents view of the WhiteIntel dossier for **Atara Biotherapeutics, Inc.**. Human view: https://whiteintel.dev/entity/8a5507e4-9c1c-5edd-82c9-7075a400f0ab · Structured JSON: https://whiteintel.dev/api/public/dossier/8a5507e4-9c1c-5edd-82c9-7075a400f0ab._

_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"._