Zenas BioPharma, Inc. reports

Company Names, identifiers, and filing context for this profile. 1 identity field
Company location
Waltham, MA
SEC filing record 1 source field available
Fiscal year end
31 December
Zenas BioPharma, Inc. has filed 176 SEC EDGAR filings since 15 Nov 2022

SEC filing history

Showing 26-50 of 176 matching filings.

Per page
25
Current page
2
424B5 File 333-290777

424B5

Filing date
26 Mar 2026
Reporting date
Not listed
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424B5 File 333-290777

424B5

Filing date
26 Mar 2026
Reporting date
Not listed
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FWP File 333-290777

FWP

Filing date
26 Mar 2026
Reporting date
Not listed
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DEFA14A File 001-42270

DEFA14A

Filing date
16 Mar 2026
Reporting date
Not listed
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ARS File 001-42270

ARS

Filing date
16 Mar 2026
Reporting date
31 Dec 2025
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DEF 14A File 001-42270

DEF 14A

Filing date
16 Mar 2026
Reporting date
11 May 2026
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4

OWNERSHIP DOCUMENT

Filing date
13 Feb 2026
Reporting date
11 Feb 2026
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4

OWNERSHIP DOCUMENT

Filing date
13 Feb 2026
Reporting date
12 Feb 2026
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SCHEDULE 13G/A File 005-94625

SCHEDULE 13G/A filing

Filing date
05 Feb 2026
Reporting date
Not listed
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4

OWNERSHIP DOCUMENT

Filing date
03 Feb 2026
Reporting date
02 Feb 2026
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424B7 File 333-290999

424B7

Filing date
28 Jan 2026
Reporting date
Not listed
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SCHEDULE 13D File 005-94625

SCHEDULE 13D filing

Filing date
14 Jan 2026
Reporting date
Not listed
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4

OWNERSHIP DOCUMENT

Filing date
09 Jan 2026
Reporting date
07 Jan 2026
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SCHEDULE 13G/A File 005-94625

SCHEDULE 13G/A filing

Filing date
14 Nov 2025
Reporting date
Not listed
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