ZBIO - CIK 0001953926
Zenas BioPharma, Inc. has filed 166 documents with the SEC between 2022 and 2026. The most frequent type is insider trade (51 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Insider trade | 4 | 2026-05-18 | 2026-05-18 |
| Quarterly report | 10-Q | 2026-05-13 | 2026-03-31 |
| Major company event | 8-K | 2026-05-13 | 2026-05-11 |
| SCHEDULE 13D | - | 2026-05-05 | - |
| Insider trade | 4 | 2026-04-29 | 2026-04-28 |
| SCHEDULE 13D/A | - | 2026-04-02 | - |
| Insider trade | 4 | 2026-04-02 | 2026-03-31 |
| Insider trade | 4 | 2026-04-01 | 2026-03-31 |
| Insider trade | 4 | 2026-03-31 | 2026-03-30 |
| Insider trade | 4 | 2026-03-31 | 2026-03-31 |
| Major company event | 8-K | 2026-03-31 | 2026-03-26 |
| Prospectus supplement | 424B5 | 2026-03-30 | - |
| Prospectus supplement | 424B5 | 2026-03-30 | - |
| Free writing prospectus | FWP | 2026-03-27 | - |
| Free writing prospectus | FWP | 2026-03-27 | - |
| Prospectus supplement | 424B5 | 2026-03-26 | - |
| Prospectus supplement | 424B5 | 2026-03-26 | - |
| Free writing prospectus | FWP | 2026-03-26 | - |
| Proxy materials | DEFA14A | 2026-03-16 | - |
| Annual report to shareholders | ARS | 2026-03-16 | 2025-12-31 |
| Proxy statement | DEF 14A | 2026-03-16 | 2026-05-11 |
| Employee stock plan | S-8 | 2026-03-16 | - |
| Annual report | 10-K | 2026-03-16 | 2025-12-31 |
| Major company event | 8-K | 2026-03-16 | 2026-03-16 |
| Insider trade | 4 | 2026-02-13 | 2026-02-11 |
| Insider trade | 4 | 2026-02-13 | 2026-02-12 |
| Major company event | 8-K | 2026-02-13 | 2026-02-10 |
| SCHEDULE 13G/A | - | 2026-02-05 | - |
| Insider trade | 4 | 2026-02-03 | 2026-02-02 |
| 424B7 | - | 2026-01-28 | - |
| SCHEDULE 13D | - | 2026-01-14 | - |
| Insider trade | 4 | 2026-01-09 | 2026-01-07 |
| Major company event | 8-K | 2026-01-05 | 2026-01-05 |
| Employee stock plan | S-8 | 2025-12-19 | - |
| Major company event | 8-K | 2025-12-15 | 2025-12-10 |
| SCHEDULE 13G/A | - | 2025-11-14 | - |
| Quarterly report | 10-Q | 2025-11-12 | 2025-09-30 |
| Major company event | 8-K | 2025-11-12 | 2025-11-12 |
| Major company event | 8-K | 2025-10-27 | 2025-10-27 |
| S-3ASR | - | 2025-10-21 | - |
| New insider ownership | 3 | 2025-10-15 | 2025-10-07 |
| SCHEDULE 13G | - | 2025-10-15 | - |
| SCHEDULE 13D/A | - | 2025-10-14 | - |
| SCHEDULE 13D/A | - | 2025-10-14 | - |
| Insider trade | 4 | 2025-10-14 | 2025-10-09 |
| Insider trade | 4 | 2025-10-14 | 2025-10-09 |
| SCHEDULE 13D/A | - | 2025-10-14 | - |
| Insider trade | 4 | 2025-10-14 | 2025-10-09 |
| Insider trade | 4 | 2025-10-09 | 2025-10-07 |
| SCHEDULE 13D/A | - | 2025-10-09 | - |