Hongbo Lu - 31 Mar 2026 Form 4 Insider Report for Zenas BioPharma, Inc. (ZBIO)

Reporting relationship: Director
Issuer ticker: ZBIO
Reported as of: 31 Mar 2026
Net transaction value: +$70,198
SEC form: 4
Accepted by SEC: 02 Apr 2026, 17:02:16 UTC
Prior SEC filing: 13 Feb 2026
Next SEC filing: 14 May 2026
Source filing: View source filing
Reporting owner signature: By: /s/ Hongbo Lu

Key filing fact

Hongbo Lu filed Form 4 for Zenas BioPharma, Inc. (ZBIO) on 02 Apr 2026.

Key facts

This page summarizes Hongbo Lu's Form 4 filing for Zenas BioPharma, Inc. (ZBIO).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 02 Apr 2026, 17:02.

Change

Previous filing in this sequence was filed on 13 Feb 2026.
Current net transaction value: +$70,198.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001767584 Primary reporting owner

Lu Hongbo

Relationship: Director
Address: C/O ZENAS BIOPHARMA, INC., 852 WINTER ST., SUITE 250, WALTHAM
Signature: By: /s/ Hongbo Lu
Signature date: 02 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ZBIO transaction

Common Stock

Purchase

Transaction value: $70,198
Shares: +3,768
Change %: +0.89%
Price: $18.63
Shares after: 426,736
Date: 31 Mar 2026
Ownership: See footnote
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

The reported securities are owned directly by NEXTBio Master Fund LP or NEXTBio Evergreen LLC and may be deemed to be indirectly beneficially owned by (i) NEXTBio Capital LLC, the general partner of NEXTBio Master Fund LP (with respect to such securities directly owned by NEXTBio Master Fund LP), (ii) NEXTBio Capital Evergreen GP LLC, the managing member of NEXTBio Evergreen LLC (with respect to such securities directly owned by NEXTBio Evergreen LLC), (iii) NEXTBio Capital Management LP, the investment manager to NEXTBio Master Fund LP and NEXTBio Evergreen LLC, and (iv) Hongbo Lu, a managing member of NEXTBio Capital LLC and NEXTBio Capital Evergreen GP LLC.

Footnote F2

The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.