Key facts
- FMR LLC filed SCHEDULE 13G/A for ZENAS BIOPHARMA INC COMMON STOCK (ZBIO).
- Disclosed ownership: 14%.
- Date of event: 31 Dec 2025.
FMR LLC - 31 Dec 2025 SCHEDULE 13G/A Report for ZENAS BIOPHARMA INC COMMON STOCK (ZBIO)
- Filing Manager
- FMR LLC
- Reporting Manager
- FMR LLC
- Security
- ZENAS BIOPHARMA INC COMMON STOCK
- Symbol
- ZBIO
- Shares outstanding
- 53,512,273 shares
- Disclosed Ownership
- 7,652,255 shares
- Ownership
- 14%
- Form type
- SCHEDULE 13G/A
- Filing time
- 05 Feb 2026, 13:43:39 UTC
- Date of event
- 31 Dec 2025
- Previous filing
- 08 Sep 2025
- SEC
- View on sec.gov
Key filing fact
FMR LLC disclosed 14% ownership in ZENAS BIOPHARMA INC COMMON STOCK (ZBIO) on 31 Dec 2025.
Change
- Previous schedule filing date: 08 Sep 2025.
- Current filing was accepted on 05 Feb 2026, 13:43.
Research use
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting persons
Reporting managers (2)
Names, ownership, voting power, signatures, titles, and CIKs as disclosed in this Schedule 13D/G filing.
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| FMR LLC | 14% | 7,652,255 | 7,651,279 | 0 | Stephanie J. Brown | Duly authorized under Power of Attorney effective as of January 3, 2023, by and on behalf of FMR LLC and its direct and indirect subsidiaries* | |
| Abigail P. Johnson | 14% | 7,652,255 | 0 | 0 | Stephanie J. Brown | Duly authorized under Power of Attorney effective as of January 26, 2023, by and on behalf of Abigail P. Johnson** |
CIK / CUSIP context first