Zenas BioPharma, Inc.

Nasdaq:ZBIO

Pharmaceutical Preparations·WALTHAM, MA

CEO

Moulder Leon O Jr

Financials

6 shown

Type	Period	Ended	Filed
10-K	FY 2025	12/31/25	3/16/26	→
10-Q	Q3 2025	9/30/25	11/12/25	→
10-Q	Q2 2025	6/30/25	8/12/25	→
10-Q	Q1 2025	3/31/25	5/15/25	→
10-K	FY 2024	12/31/24	3/11/25	→
10-Q	Q3 2024	9/30/24	11/12/24	→

Earnings Releases (8-K)

8 shown

Filed	Period
3/16/26	Q1 FY2026	→
1/5/26	Q4 FY2026	→
11/12/25	Q4 FY2025	→
10/8/25	Q3 FY2025	→
8/12/25	Q3 FY2025	→
5/15/25	Q2 FY2025	→
↓

News (8-K)

8 shown

Filed	Type	Description
2/13/26	Exec Change	Departure or Appointment of Directors or Certain Officers	→
12/15/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
10/27/25	Reg FD	Regulation FD Disclosure	→
9/2/25	Acquisition	Entry into a Material Definitive Agreement	→
6/12/25	Exec Change	Departure or Appointment of Directors or Certain Officers	→
6/4/25	Reg FD	Regulation FD Disclosure	→
↓

Prospectuses & Registrations

14 shown

Filed	Form	Description
3/16/26	ARS	ARS	→
3/16/26	S-8	S-8	→
1/28/26	424B7	424B7	→
12/19/25	S-8	S-8	→
10/21/25	S-3ASR	S-3ASR	→
10/8/25	S-3ASR	S-3ASR	→
↓

Filing History(148 filings)

TypeDateAccessionPeriodSize

DEFA14A

Mar 16, 2026

0001104659-26-028064DEFA14A

—

331.0 KB

ARS

Mar 16, 2026

0001104659-26-028063ARS

Dec 31, 2025

3.9 MB

DEF 14A

Mar 16, 2026

0001104659-26-028062DEF 14A

May 11, 2026

1.9 MB

S-8

Mar 16, 2026

0001104659-26-027991FORM S-8

—

187.5 KB

10-K

Mar 16, 2026

0001104659-26-02796410-K

Dec 31, 2025

14.6 MB

8-K

Mar 16, 2026

0001104659-26-027961FORM 8-K

Mar 16, 2026

286.8 KB

Feb 13, 2026

0001104659-26-015387OWNERSHIP DOCUMENT

Feb 11, 2026

5.9 KB

Feb 13, 2026

0001104659-26-015342OWNERSHIP DOCUMENT

Feb 12, 2026

9.9 KB

8-K

Feb 13, 2026

0001104659-26-015314FORM 8-K

Feb 10, 2026

234.5 KB

SCHEDULE 13G/A

Feb 5, 2026

0000315066-26-000571

—

11.3 KB

Feb 3, 2026

0001104659-26-009756OWNERSHIP DOCUMENT

Feb 2, 2026

7.4 KB

424B7

Jan 28, 2026

0001104659-26-007414424B7

—

23.9 KB

SCHEDULE 13D

Jan 14, 2026

0001104659-26-003758

—

35.1 KB

Jan 9, 2026

0001104659-26-002589OWNERSHIP DOCUMENT

Jan 7, 2026

11.2 KB

8-K

Jan 5, 2026

0001104659-26-000402FORM 8-K

Jan 5, 2026

262.5 KB

S-8

Dec 19, 2025

0001104659-25-123261FORM S-8

—

233.2 KB

8-K

Dec 15, 2025

0001104659-25-121182FORM 8-K

Dec 10, 2025

646.4 KB

SCHEDULE 13G/A

Nov 14, 2025

0001388325-25-000027

—

7.4 KB

10-Q

Nov 12, 2025

0001104659-25-10975310-Q

Sep 30, 2025

8.7 MB

8-K

Nov 12, 2025

0001104659-25-109737FORM 8-K

Nov 12, 2025

271.0 KB

8-K

Oct 27, 2025

0001104659-25-102317FORM 8-K

Oct 27, 2025

247.5 KB

S-3ASR

Oct 21, 2025

0001104659-25-101271S-3ASR

—

520.0 KB

Oct 15, 2025

0001213900-25-098960

Oct 7, 2025

3.7 KB

SCHEDULE 13G

Oct 15, 2025

0001213900-25-098959

—

17.3 KB

SCHEDULE 13D/A

Oct 14, 2025

0001953107-25-000010

—

11.2 KB

25 filings shown

Zenas BioPharma, Inc.

Financials

Earnings Releases (8-K)

News (8-K)

Prospectuses & Registrations

Filing History(148 filings)

Proxies

Ownership

Other Filings

Filed	Form	Description
2/13/26	4	OWNERSHIP DOCUMENT	→
2/13/26	4	OWNERSHIP DOCUMENT	→
2/3/26	4	OWNERSHIP DOCUMENT	→
1/9/26	4	OWNERSHIP DOCUMENT	→
10/15/25	3	3	→
10/14/25	4	4	→
↓

Filed	Form	Description
2/5/26	SCHEDULE 13G/A	SCHEDULE 13G/A	→
1/14/26	SCHEDULE 13D	SCHEDULE 13D	→
11/14/25	SCHEDULE 13G/A	SCHEDULE 13G/A	→
10/15/25	SCHEDULE 13G	SCHEDULE 13G	→
10/14/25	SCHEDULE 13D/A	SCHEDULE 13D/A	→
10/14/25	SCHEDULE 13D/A	SCHEDULE 13D/A	→
↓