Zenas BioPharma, Inc. (ZBIO) ownership: Entities affiliated with FMR Group 33% · institutions 102% · index and ETF funds 3% (13F 2026-06-30). Insider activity, 90 days: 0 sales, 0 open-market buys. SEC EDGAR first-party data.
| Holder | Shares | Market Value | % Outstanding | Reported |
|---|---|---|---|---|
| FMR (Fidelity) | 9506701.00 | $241.28M | 15.1% | 2026-06-30 |
| SR One Capital Management, LP | 5037854.00 | $127.86M | 8.0% | 2026-06-30 |
| NEA Management Company, LLC | 4023219.00 | $102.11M | 6.4% | 2026-06-30 |
| Enavate Sciences Gp, LLC | 3919159.00 | $99.47M | 6.2% | 2026-06-30 |
| Federated Hermes | 3116805.00 | $79.10M | 4.9% | 2026-06-30 |
| BlackRock | 2686225.00 | $68.18M | 4.3% | 2026-06-30 |
| Capital Group | 2502912.00 | $63.52M | 4.0% | 2026-06-30 |
| Polar Capital Holdings Plc | 2412772.00 | $61.24M | 3.8% | 2026-06-30 |
| Insider | Transaction | Value | Date |
|---|---|---|---|
| Sell | null | 2026-09-01 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 | |
| Sell | null | 2026-06-15 |
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Institutional data from SEC Form 13F. Insider data from SEC Form 4. Congressional data from STOCK Act disclosures. Not personalized investment advice.