Zenas BioPharma, Inc. insider trading
ZBIO$26.94-0.89 (-3.20% today)
“Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.”
Insider Trading vs Stock Price
Insider Trading vs Stock Price data
Showing the 1Y range: Oct 6, 2025 to Oct 6, 2026. Price (+17.0%). 0 insider transactions plotted in this window as 0 markers; nearby trades of the same kind are grouped.
| Date | Category | Person | Role | Action | Amount | Change in holding |
|---|
Open market purchase
Open market sellNet dollar flow · Buy / Sell balance
PremiumQ1 '25Q2 '25Q3 '25Q4 '25Q1 '26Q2 '26
Unlock quarterly net flowKey players
- IPInnoCare Pharma Inc.10.74%
- JRJason Raleigh Nunn4.7869%
- PGPatrick G. Enright4.0186%
- LOLeon O. Moulder Jr.3.5383%
- HLHongbo Lu0.6547%
- PLPatricia L. Allen0.0305%
- TXTing Xiao0.0153%
- JAJennifer A. Fox0.0024%
- JLJoseph L. Farmer0.0015%
- TKTomas KiselakNot reported
AI Activity Analysis
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Insider activity
Fromto
| Company | Insider / role | Action | ΔOwn | Avg price | Amount | ||
|---|---|---|---|---|---|---|---|
| ZBIO | Leon O. Moulder Jr. | Open market purchase$1.01M | +13.0% | $16.88 | $1.01M | May 18, 2026 | May 18, 2026 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$617K | +1.6% | $17.62 | $617K | Apr 29, 2026 | Apr 29, 2026 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$451K | +1.2% | $18.02 | $451K | Apr 28, 2026 | Apr 29, 2026 |
| ZBIO | Hongbo Lu | Open market purchase$70.2K | +0.9% | $18.63 | $70.2K | Mar 31, 2026 | Apr 2, 2026 |
| ZBIO | Tomas Kiselak | Open market purchase$3M | +6.8% | $20.00 | $3M | Mar 31, 2026 | Apr 1, 2026 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$657K | +1.6% | $19.31 | $657K | Mar 31, 2026 | Mar 31, 2026 |
| ZBIO | Hongbo Lu | Open market purchase$1.5M | +21.6% | $20.00 | $1.5M | Mar 31, 2026 | Mar 31, 2026 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$365K | +1.0% | $18.23 | $365K | Mar 30, 2026 | Mar 31, 2026 |
| ZBIO | Patricia L. Allen | Open market purchase$110K | +26.5% | $26.36 | $110K | Feb 13, 2026 | Feb 13, 2026 |
| ZBIO | Patricia L. Allen | Open market purchase$133K | +46.7% | $26.50 | $133K | Feb 12, 2026 | Feb 13, 2026 |
| ZBIO | Patricia L. Allen | Open market purchase$139K | +114.0% | $24.34 | $139K | Feb 12, 2026 | Feb 13, 2026 |
| ZBIO | Patricia L. Allen | Open market purchase$119K | Not reported | $23.77 | $119K | Feb 12, 2026 | Feb 13, 2026 |
| ZBIO | Hongbo Lu | Open market purchase$585K | +8.1% | $22.50 | $585K | Feb 11, 2026 | Feb 13, 2026 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$1.02M | +2.8% | $17.96 | $1.02M | Feb 2, 2026 | Feb 3, 2026 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$331K | +1.0% | $16.55 | $331K | Jan 9, 2026 | Jan 9, 2026 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$489K | +1.5% | $16.30 | $489K | Jan 8, 2026 | Jan 9, 2026 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$819K | +2.6% | $16.38 | $819K | Jan 7, 2026 | Jan 9, 2026 |
| ZBIO | Jason Raleigh Nunn | Open market purchase$1.2M | +2.1% | $19.00 | $1.2M | Oct 9, 2025 | Oct 14, 2025 |
| ZBIO | SR One Capital Management, LLC | Open market purchase$1.2M | +1.3% | $19.00 | $1.2M | Oct 9, 2025 | Oct 14, 2025 |
| ZBIO | SR One Capital Management, LLC | Open market purchase$1.2M | +1.3% | $19.00 | $1.2M | Oct 9, 2025 | Oct 14, 2025 |
| ZBIO | Patrick G. Enright | Open market purchase$250K | +1.6% | $20.85 | $250K | Oct 9, 2025 | Oct 14, 2025 |
| ZBIO | Patrick G. Enright | Open market purchase$2M | +6.1% | $19.00 | $2M | Oct 9, 2025 | Oct 14, 2025 |
| ZBIO | Leon O. Moulder Jr. | Open market purchase$770K | +13.9% | $20.85 | $770K | Oct 7, 2025 | Oct 9, 2025 |
| ZBIO | Peter Evan Harwin | Open market purchase$6.01M | +16.7% | $19.00 | $6.01M | Oct 7, 2025 | Oct 9, 2025 |
| ZBIO | Hongbo Lu | Open market purchase$5M | +447.4% | $19.00 | $5M | Oct 7, 2025 | Oct 9, 2025 |