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 |
|---|---|---|---|
| SEC STAFF LETTER | Filing | Sep 12, 2024 | — |
| EFFECT | Filing | Sep 12, 2024 | — |
| CERT | Filing | Sep 12, 2024 | — |
| 8-A12B | Filing | Sep 10, 2024 | — |
| CORRESP | Letter to the SEC | Sep 10, 2024 | — |
| CORRESP | Letter to the SEC | Sep 10, 2024 | — |
| CORRESP | Letter to the SEC | Aug 27, 2024 | — |
| DRSLTR | Filing | Jul 25, 2024 | — |
| UPLOAD | Letter from the SEC | Jul 24, 2024 | — |
| DRSLTR | Filing | Jul 16, 2024 | — |
| UPLOAD | Letter from the SEC | Jul 5, 2024 | — |
| DRSLTR | Filing | Jun 26, 2024 | — |
| DRS/A | Filing | Jun 26, 2024 | — |
| UPLOAD | Letter from the SEC | Jun 18, 2024 | — |
| DRSLTR | Filing | Jun 14, 2024 | — |
| DRS/A | Filing | Jun 14, 2024 | — |
| UPLOAD | Letter from the SEC | May 28, 2024 | — |
| DRS/A | Filing | May 16, 2024 | — |
| DRSLTR | Filing | May 15, 2024 | — |
| D | Filing | May 14, 2024 | — |
| SEC STAFF LETTER | Filing | Feb 21, 2024 | — |
| UPLOAD | Letter from the SEC | Feb 21, 2024 | — |
| DRS | Filing | Jan 25, 2024 | — |
| D | Filing | Nov 15, 2022 | — |
Showing 24 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)
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- Abbott Laboratories ABT
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.