Institutional Ownership
Zenas Biopharma Inc
CUSIP 98937L105COMZBIOQ1 2026
13D / 13G Filings
17
Schedule 13D/13G on record
Beneficial Filers
10
Distinct reporting persons
Largest Stake
14.3%
Max % of class reported
Institutional Holders
133
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
17 filings · latest Feb 5, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 5, 2026 | Fmr LLC | 13G/A | 14.3% | 7.65M | SEC |
| 2 | Jan 14, 2026 | Leon O. Moulder, Jr. | 13D | 5.2% | — | SEC |
| 3 | Nov 14, 2025 | Novo Holdings A/S | 13G/A | 4.7% | 2.00M | SEC |
| 4 | Oct 15, 2025 | Innocare Pharma Inc. | 13G | 9.4% | 5.00M | SEC |
| 5 | Oct 14, 2025 | Enavate Sciences Gp, LLC | 13D/A | 7.3% | — | SEC |
| 6 | Oct 14, 2025 | Sr One Capital Management, LLC | 13D/A | 9.4% | — | SEC |
| 7 | Oct 14, 2025 | Longitude Capital Partners IV, LLC | 13D/A | 4.9% | — | SEC |
| 8 | Oct 9, 2025 | Leon O. Moulder, Jr. | 13D/A | 4.8% | — | SEC |
| 9 | Sep 8, 2025 | Fmr LLC | 13G/A | 11.0% | 4.64M | SEC |
| 10 | Aug 6, 2025 | Fmr LLC | 13G/A | 7.9% | 3.32M | SEC |
7 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Zenas Biopharma Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Fmr LLC | 9.08M | $177.55M |
| 2 | Sr One Capital Management, LP | 5.04M | $98.49M |
| 3 | Nea Management Company, LLC | 4.02M | $78.65M |
| 4 | Enavate Sciences Gp, LLC | 3.92M | $76.62M |
| 5 | Federated Hermes, Inc. | 3.13M | $61.13M |
| 6 | Polar Capital Holdings PLC | 2.55M | $49.82M |
| 7 | Capital International Investors | 2.43M | $47.58M |
| 8 | Fairmount Funds Management LLC | 2.36M | $46.12M |
| 9 | Blackrock, Inc. | 2.04M | $39.83M |
| 10 | Nvp Associates, LLC | 1.84M | $35.94M |