Zenas BioPharma, Inc (ZBIO) insider trading
Every open-market stock purchase and sale by Zenas BioPharma, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Insiders bought $28.9M over the last 12 months (16 buys).
- Last insider buy: Leon O Moulder Jr (CEO), $1M, 5 months ago.
Last 12 months: insiders bought $28.9M (16 buys) and sold $0 (0 sales). Last close $17.61 on Jun 7, 2026.
Recent ZBIO insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Jun 15, 2026 | Patricia L Allen (Director) | Bought (not open market) | — |
| Jun 15, 2026 | Leon O Moulder Jr (Officer) | Bought (not open market) | — |
| Jun 15, 2026 | Lisa von Moltke (Officer) | Bought (not open market) | — |
| Jun 15, 2026 | Jason Raleigh Nunn (Insider) | Bought (not open market) | — |
| Jun 15, 2026 | Jennifer A. Fox (Officer) | Bought (not open market) | — |
| Jun 15, 2026 | Joseph L Farmer (Officer) | Bought (not open market) | — |
| Jun 15, 2026 | Patrick G Enright (Director) | Bought (not open market) | — |
| Jun 15, 2026 | James P Boylan (Director) | Bought (not open market) | — |
| Jun 15, 2026 | John J Orloff (Director) | Bought (not open market) | — |
| Jun 15, 2026 | Hongbo Lu (Director) | Bought (not open market) | — |
| May 18, 2026 | Leon O Moulder Jr (CEO) | Bought | $1M |
| Apr 29, 2026 | Leon O Moulder Jr (CEO) | Bought | $617K |
| Apr 28, 2026 | Leon O Moulder Jr (CEO) | Bought | $451K |
| Mar 31, 2026 | Fairmount Funds Management LLC (Director) | Bought | $3M |
| Mar 31, 2026 | Hongbo Lu (Director) | Bought | $1.5M |
| Mar 31, 2026 | Leon O Moulder Jr (CEO) | Bought | $657K |
| Mar 31, 2026 | Hongbo Lu (Director) | Bought | $70.2K |
| Mar 30, 2026 | Leon O Moulder Jr (CEO) | Bought | $365K |
| Feb 13, 2026 | Patricia L Allen (Director) | Bought | $110K |
| Feb 12, 2026 | Patricia L Allen (Director) | Bought | $139K |
| Feb 12, 2026 | Patricia L Allen (Director) | Bought | $133K |
| Feb 11, 2026 | Hongbo Lu (Director) | Bought | $585K |
| Feb 5, 2026 | Jennifer A. Fox (Officer) | Bought (not open market) | $21.3K |
| Feb 5, 2026 | Joseph L Farmer (Officer) | Bought (not open market) | $13K |
| Feb 2, 2026 | Leon O Moulder Jr (CEO) | Bought | $1M |
Who's trading ZBIO
- Lisa von Moltke, Officer: other filings, last Jun 15, 2026
- James P Boylan, Director: other filings, last Jun 15, 2026
- Patrick G Enright, Director: bought $2.3M (2 buys), last Jun 15, 2026
- Jennifer A. Fox, Officer: other filings, last Jun 15, 2026
- Hongbo Lu, Director: bought $7.2M (4 buys), last Jun 15, 2026
- Leon O Moulder Jr, CEO: bought $6.5M (10 buys), last Jun 15, 2026
- Jason Raleigh Nunn, Insider: bought $1.2M (1 buy), last Jun 15, 2026
- John J Orloff, Director: other filings, last Jun 15, 2026
- Patricia L Allen, Director: bought $381K (3 buys), last Jun 15, 2026
- Joseph L Farmer, Officer: other filings, last Jun 15, 2026
- Fairmount Funds Management LLC, Director: bought $9M (2 buys), last Mar 31, 2026
- Sr One Capital Management LLC, Insider: bought $2.4M (2 buys), last Oct 9, 2025
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