Zenas BioPharma, Inc. SEC filings ZBIO
Zenas BioPharma, Inc. has 193 filings in SEC EDGAR's recent list, going back to Nov 15, 2022. Its latest annual report, Form ARS, was filed on Mar 16, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 5, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Nov 5, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| S-3ASR | Automatic shelf registration | Sep 11, 2026 | — |
| S-8 | Employee stock plan registration | Sep 11, 2026 | — |
| 424B5 | Prospectus supplement | Mar 30, 2026 | — |
| 424B5 | Prospectus supplement | Mar 30, 2026 | — |
| FWP | Free writing prospectus | Mar 27, 2026 | — |
| FWP | Free writing prospectus | Mar 27, 2026 | — |
| 424B5 | Prospectus supplement | Mar 26, 2026 | — |
| 424B5 | Prospectus supplement | Mar 26, 2026 | — |
| FWP | Free writing prospectus | Mar 26, 2026 | — |
| S-8 | Employee stock plan registration | Mar 16, 2026 | — |
| 424B7 | Filing | Jan 28, 2026 | — |
| S-8 | Employee stock plan registration | Dec 19, 2025 | — |
| S-3ASR | Automatic shelf registration | Oct 21, 2025 | — |
| S-3ASR | Automatic shelf registration | Oct 8, 2025 | — |
| S-8 | Employee stock plan registration | Aug 12, 2025 | — |
| S-8 | Employee stock plan registration | Mar 11, 2025 | — |
| S-8 | Employee stock plan registration | Sep 16, 2024 | — |
| 424B4 | Prospectus | Sep 13, 2024 | — |
| S-1MEF | Filing | Sep 12, 2024 | — |
| S-1/A | Amended registration statement | Sep 6, 2024 | — |
| S-1 | Registration statement | Aug 22, 2024 | — |
Showing 21 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- ZBIO (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Waltham, MA
- SEC filer status
- Non-accelerated filer, Smaller reporting company, Emerging growth company
- SEC CIK
- 1953926
- Former names
- Zenas BioPharma (Cayman) Ltd (until Nov 15, 2022)
Other Pharmaceutical Preparations companies
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- Abbott Laboratories ABT
- Novo Nordisk A S NVO
Source: SEC EDGAR filings. This is company-reported data, not investment advice.