Zenas BioPharma Inc.
Last updated September 27, 2026
Organization details
- Legal name
- Zenas BioPharma Inc.
- Former names
- Zenas BioPharma (Cayman) Ltd
- Ownership
- Public
- Status
- Active
- SIC code
- 2834 — Pharmaceutical Preparations
- Jurisdiction of incorporation
- Delaware
- Headquarters city
- Waltham
- Headquarters state / province
- Massachusetts
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- ZBIO
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001953926
Board of directors
- Since 2026
-
Hongbo Lu · DirectorSince 2024
-
James P. Boylan · DirectorSince 2024
-
Jason Raleigh Nunn · DirectorSince 2024
-
John J. Orloff · DirectorSince 2024
-
Leon O. Moulder Jr. · Director · See RemarksSince 2024
-
Patricia L. Allen · DirectorSince 2024
- Since 2024
- Since 2024
-
Ting Xiao · DirectorSince 2024
- Since 2024
Chief executives
Leon O. Moulder Jr.
· Chief Executive Officer
Dates unknown
Director election results
Annual meeting of May 11, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
91.5%
-
91.8%
Board connections
8 of this board's directors also sit on 22 other boards.
- via Leon O. Moulder Jr., Peter Evan Harwin and Tomas Kiselak
- via Peter Evan Harwin and Tomas Kiselak
- via Peter Evan Harwin and Tomas Kiselak
- via Peter Evan Harwin and Tomas Kiselak
- via Peter Evan Harwin and Tomas Kiselak
- via Peter Evan Harwin and Tomas Kiselak
- via Christy J. Oliger and Patrick G. Enright
- via Peter Evan Harwin and Tomas Kiselak
- via Jason Raleigh Nunn
- via Hongbo Lu
- via Christy J. Oliger
- via Patrick G. Enright
- via James P. Boylan
- via Peter Evan Harwin
- via James P. Boylan
- via Peter Evan Harwin
- via James P. Boylan
- via Patrick G. Enright
- via Christy J. Oliger
- via Christy J. Oliger
- via Patrick G. Enright
- via Leon O. Moulder Jr.
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $29,046,629
- 25 purchases by 8 insiders
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| May 18, 2026 | Leon O. Moulder Jr. Director, Officer (Chief Executive Officer) | Open-market purchase | +60,000 | $16.88 | $1,012,800 |
| Apr 29, 2026 | Leon O. Moulder Jr. Director, Officer (Chief Executive Officer) | Open-market purchase | +35,000 | $17.62 | $616,700 |
| Apr 28, 2026 | Leon O. Moulder Jr. Director, Officer (Chief Executive Officer) | Open-market purchase | +25,000 | $18.02 | $450,500 |
| Mar 31, 2026 | Hongbo Lu Director | Open-market purchase | +75,000 | $20.00 | $1,500,000 |
| Mar 31, 2026 | Hongbo Lu Director | Open-market purchase | +3,768 | $18.63 | $70,198 |
| Mar 31, 2026 | Tomas Kiselak Director | Open-market purchase | +150,000 | $20.00 | $3,000,000 |
| Mar 31, 2026 | Leon O. Moulder Jr. Director, Officer (Chief Executive Officer) | Open-market purchase | +34,000 | $19.31 | $656,540 |
| Mar 30, 2026 | Leon O. Moulder Jr. Director, Officer (Chief Executive Officer) | Open-market purchase | +20,000 | $18.23 | $364,600 |
| Feb 13, 2026 | Patricia L. Allen Director | Open-market purchase | +4,160 | $26.36 | $109,658 |
| Feb 12, 2026 | Patricia L. Allen Director | Open-market purchase | +5,000 | $23.77 | $118,850 |
| Feb 12, 2026 | Patricia L. Allen Director | Open-market purchase | +5,700 | $24.34 | $138,738 |
| Feb 12, 2026 | Patricia L. Allen Director | Open-market purchase | +5,000 | $26.50 | $132,500 |
| Feb 11, 2026 | Hongbo Lu Director | Open-market purchase | +25,985 | $22.50 | $584,663 |
| Feb 5, 2026 | Farmer Joseph L Officer (See Remarks) | Grant or award | +974 | $13.35 | $13,003 |
| Feb 5, 2026 | Jennifer A. Fox Officer (See Remarks) | Grant or award | +1,592 | $13.35 | $21,253 |
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