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 |
|---|---|---|---|
| Activist ownership stake | SC 13D | 2024-09-23 | - |
| Activist ownership stake | SC 13D | 2024-09-23 | - |
| Insider trade | 4 | 2024-09-20 | 2024-09-18 |
| Insider trade | 4 | 2024-09-18 | 2024-09-16 |
| Insider trade | 4 | 2024-09-18 | 2024-09-16 |
| Insider trade (amended) | 4/A | 2024-09-17 | 2024-09-12 |
| Insider trade (amended) | 4/A | 2024-09-17 | 2024-09-12 |
| Insider trade | 4 | 2024-09-17 | 2024-09-13 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Insider trade | 4 | 2024-09-16 | 2024-09-12 |
| Employee stock plan | S-8 | 2024-09-16 | - |
| Major company event | 8-K | 2024-09-16 | 2024-09-16 |
| Insider trade | 4 | 2024-09-16 | 2024-09-16 |
| Insider trade | 4 | 2024-09-16 | 2024-09-16 |
| 424B4 | - | 2024-09-13 | - |
| SEC STAFF LETTER | - | 2024-09-12 | - |
| EFFECT | - | 2024-09-12 | - |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| Exchange certification | CERT | 2024-09-12 | - |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| S-1MEF | - | 2024-09-12 | - |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| New insider ownership | 3 | 2024-09-12 | 2024-09-12 |
| 8-A12B | - | 2024-09-10 | - |
| Company correspondence | CORRESP | 2024-09-10 | - |
| Company correspondence | CORRESP | 2024-09-10 | - |
| S-1/A | - | 2024-09-06 | - |
| Company correspondence | CORRESP | 2024-08-27 | - |
| IPO registration | S-1 | 2024-08-22 | - |
| DRSLTR | - | 2024-07-25 | - |