FMR LLC - 29 Aug 2025 SCHEDULE 13G/A Report for ZENAS BIOPHARMA INC COMMON STOCK (ZBIO)

Filing Manager
FMR LLC
Reporting Manager
FMR LLC
Symbol
ZBIO
Shares outstanding
42,220,718 shares
Disclosed Ownership
4,644,279 shares
Ownership
11%
Form type
SCHEDULE 13G/A
Filing time
08 Sep 2025, 11:46:16 UTC
Date of event
29 Aug 2025
Previous filing
06 Aug 2025
Next filing
05 Feb 2026

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Quoteable Key Fact

"FMR LLC disclosed 11% ownership in ZENAS BIOPHARMA INC COMMON STOCK (ZBIO) on 29 Aug 2025."

Quick Takeaways

  • FMR LLC filed SCHEDULE 13G/A for ZENAS BIOPHARMA INC COMMON STOCK (ZBIO).
  • Disclosed ownership: 11%.
  • Date of event: 29 Aug 2025.

What Changed

  • Previous schedule filing date: 06 Aug 2025.
  • Current filing was accepted on 08 Sep 2025, 11:46.

Why This Matters

  • 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.

Source Evidence

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
FMR LLC 11% 4,644,279 4,643,356 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 11% 4,644,279 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**