Browse the latest SEC filings and forms submitted by Zenas BioPharma, Inc. (ZBIO). Access annual reports, quarterly statements, and other official disclosures.
View Insider Transactions for Zenas BioPharma, Inc. (ZBIO).
Search Company Filings →| Form | Filing Date | Description | Link |
|---|---|---|---|
| 424B5 | March 30, 2026 | 424B5 | View Document |
| 424B5 | March 30, 2026 | 424B5 | View Document |
| FWP | March 27, 2026 | FWP | View Document |
| FWP | March 27, 2026 | FWP | View Document |
| 424B5 | March 26, 2026 | 424B5 | View Document |
| FWP | March 26, 2026 | FWP | View Document |
| 424B5 | March 26, 2026 | 424B5 | View Document |
| 10-K | March 16, 2026 | 10-K | View Document |
| ARS | March 16, 2026 | ARS | View Document |
| DEF 14A | March 16, 2026 | DEF 14A | View Document |
| S-8 | March 16, 2026 | FORM S-8 | View Document |
| 8-K | March 16, 2026 | FORM 8-K | View Document |
| DEFA14A | March 16, 2026 | DEFA14A | View Document |
| 8-K | Feb. 13, 2026 | FORM 8-K | View Document |
| 4 | Feb. 13, 2026 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 13, 2026 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13G/A | Feb. 5, 2026 | - | View Document |
| 4 | Feb. 3, 2026 | OWNERSHIP DOCUMENT | View Document |
| 424B7 | Jan. 28, 2026 | 424B7 | View Document |
| SCHEDULE 13D | Jan. 14, 2026 | - | View Document |
| 4 | Jan. 9, 2026 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Jan. 5, 2026 | FORM 8-K | View Document |
| S-8 | Dec. 19, 2025 | FORM S-8 | View Document |
| 8-K | Dec. 15, 2025 | FORM 8-K | View Document |
| SCHEDULE 13G/A | Nov. 14, 2025 | - | View Document |
| 8-K | Nov. 12, 2025 | FORM 8-K | View Document |
| 10-Q | Nov. 12, 2025 | 10-Q | View Document |
| 8-K | Oct. 27, 2025 | FORM 8-K | View Document |
| S-3ASR | Oct. 21, 2025 | S-3ASR | View Document |
| SCHEDULE 13G | Oct. 15, 2025 | - | View Document |
| 3 | Oct. 15, 2025 | - | View Document |
| SCHEDULE 13D/A | Oct. 14, 2025 | - | View Document |
| 4 | Oct. 14, 2025 | 4 | View Document |
| SCHEDULE 13D/A | Oct. 14, 2025 | - | View Document |
| 4 | Oct. 14, 2025 | 4 | View Document |
| 4 | Oct. 14, 2025 | 4 | View Document |
| SCHEDULE 13D/A | Oct. 14, 2025 | - | View Document |
| SCHEDULE 13D/A | Oct. 9, 2025 | - | View Document |
| 4 | Oct. 9, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Oct. 9, 2025 | - | View Document |
| 4 | Oct. 9, 2025 | OWNERSHIP DOCUMENT | View Document |
| S-3ASR | Oct. 8, 2025 | S-3ASR | View Document |
| 8-K | Oct. 8, 2025 | FORM 8-K | View Document |
| SCHEDULE 13G/A | Sept. 8, 2025 | - | View Document |
| 8-K | Sept. 2, 2025 | FORM 8-K | View Document |
| 8-K | Aug. 12, 2025 | FORM 8-K | View Document |
| 10-Q | Aug. 12, 2025 | 10-Q | View Document |
| S-8 | Aug. 12, 2025 | FORM S-8 | View Document |
| SCHEDULE 13G/A | Aug. 6, 2025 | - | View Document |
| 8-K | June 12, 2025 | FORM 8-K | View Document |
| 4 | June 12, 2025 | 4 | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | June 12, 2025 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13D | June 6, 2025 | - | View Document |
| 8-K | June 4, 2025 | FORM 8-K | View Document |
| 10-Q | May 15, 2025 | 10-Q | View Document |
| 8-K | May 15, 2025 | FORM 8-K | View Document |
| SCHEDULE 13G/A | May 12, 2025 | - | View Document |
| DEF 14A | April 28, 2025 | DEF 14A | View Document |
| 4/A | April 28, 2025 | OWNERSHIP DOCUMENT | View Document |
| ARS | April 28, 2025 | ARS | View Document |
| DEFA14A | April 28, 2025 | DEFA14A | View Document |
| 4 | April 17, 2025 | OWNERSHIP DOCUMENT | View Document |
| SCHEDULE 13G | April 1, 2025 | - | View Document |
| 3 | March 21, 2025 | OWNERSHIP DOCUMENT | View Document |
| S-8 | March 11, 2025 | FORM S-8 | View Document |
| 10-K | March 11, 2025 | 10-K | View Document |
| 4 | Feb. 19, 2025 | OWNERSHIP DOCUMENT | View Document |
| 4 | Feb. 11, 2025 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Feb. 5, 2025 | FORM 8-K | View Document |
| 4 | Dec. 18, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 18, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Dec. 4, 2024 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Dec. 2, 2024 | FORM 8-K | View Document |
| 4 | Nov. 20, 2024 | OWNERSHIP DOCUMENT | View Document |
| 8-K | Nov. 12, 2024 | FORM 8-K | View Document |
| SC 13G | Nov. 12, 2024 | - | View Document |
| 10-Q | Nov. 12, 2024 | 10-Q | View Document |
| SC 13G | Oct. 21, 2024 | SC 13G | View Document |
| SC 13G | Sept. 25, 2024 | NEA 18 VENTURE GROWTH EQUITY, L.P. -- ZENAS BIOPHARMA, INC. 13G | View Document |
| SC 13D | Sept. 23, 2024 | SC 13D | View Document |
| SC 13D | Sept. 23, 2024 | SC 13D | View Document |
| SC 13D | Sept. 23, 2024 | SC 13D | View Document |
| 4 | Sept. 20, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 18, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 18, 2024 | - | View Document |
| 4/A | Sept. 17, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4/A | Sept. 17, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 17, 2024 | - | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | 4 | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | 4 | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| 4 | Sept. 16, 2024 | OWNERSHIP DOCUMENT | View Document |
| S-8 | Sept. 16, 2024 | FORM S-8 | View Document |
| 8-K | Sept. 16, 2024 | FORM 8-K | View Document |
| 424B4 | Sept. 13, 2024 | 424B4 | View Document |
| S-1MEF | Sept. 12, 2024 | S-1MEF | View Document |
| CERT | Sept. 12, 2024 | - | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | 3 | View Document |
| 3 | Sept. 12, 2024 | 3 | View Document |
| 3 | Sept. 12, 2024 | - | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| EFFECT | Sept. 12, 2024 | - | View Document |
| 3 | Sept. 12, 2024 | OWNERSHIP DOCUMENT | View Document |
| SEC STAFF LETTER | Sept. 12, 2024 | - | View Document |
| 8-A12B | Sept. 10, 2024 | 8-A12B | View Document |
| CORRESP | Sept. 10, 2024 | - | View Document |
| CORRESP | Sept. 10, 2024 | - | View Document |
| S-1/A | Sept. 6, 2024 | S-1/A | View Document |
| CORRESP | Aug. 27, 2024 | - | View Document |
| S-1 | Aug. 22, 2024 | S-1 | View Document |
| DRSLTR | July 25, 2024 | - | View Document |
| UPLOAD | July 24, 2024 | - | View Document |
| DRSLTR | July 16, 2024 | - | View Document |
| UPLOAD | July 5, 2024 | - | View Document |
| DRS/A | June 26, 2024 | - | View Document |
| DRSLTR | June 26, 2024 | - | View Document |
| UPLOAD | June 18, 2024 | - | View Document |
| DRS/A | June 14, 2024 | - | View Document |
| DRSLTR | June 14, 2024 | - | View Document |
| UPLOAD | May 28, 2024 | - | View Document |
| DRS/A | May 16, 2024 | - | View Document |
| DRSLTR | May 15, 2024 | - | View Document |
| D | May 14, 2024 | - | View Document |
| UPLOAD | Feb. 21, 2024 | - | View Document |
| SEC STAFF LETTER | Feb. 21, 2024 | - | View Document |
| DRS | Jan. 25, 2024 | - | View Document |
| D | Nov. 15, 2022 | - | View Document |