Zenas BioPharma, Inc. ZBIO
CIK 0001953926
Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.
Insider purchases & sales
- Purchased
- $113.10M
- Sold
- $0.00
Sep 1, 2023 – Sep 2, 2026
Available records · partial months are marked ·
| Date | Insider | Activity | Trade value (USD) | % of prior holding | |
|---|---|---|---|---|---|
| 2026-05-18 | MOULDER LEON O JR Chief Executive Officer · Director | Purchase | $1.01M 60,000 shares bought | 162.48% added Indirect holding | ▾ |
| 2026-04-29 | MOULDER LEON O JR Chief Executive Officer · Director | Purchase | $616.70K 35,000 shares bought | 2.00% added Indirect holding | ▾ |
| 2026-04-28 | MOULDER LEON O JR Chief Executive Officer · Director | Purchase | $450.50K 25,000 shares bought | 1.45% added Indirect holding | ▾ |
| 2026-03-31 | Lu Hongbo Director | Purchase | $70.20K 3,768 shares bought | 0.89% added Indirect holding | ▾ |
| 2026-03-31 | Harwin Peter Evan · Fairmount Healthcare Fund II L.P. · Fairmount Funds Management LLC · Kiselak Tomas Director | Purchase | $3.00M 150,000 shares bought | Unavailable Indirect holding | ▾ |
| 2026-03-31 | MOULDER LEON O JR Chief Executive Officer · Director | Purchase | $656.54K 34,000 shares bought | 2.01% added Indirect holding | ▾ |
| 2026-03-31 | Lu Hongbo Director | Purchase | $1.50M 75,000 shares bought | 21.55% added Indirect holding | ▾ |
| 2026-03-30 | MOULDER LEON O JR Chief Executive Officer · Director | Purchase | $364.60K 20,000 shares bought | 1.20% added Indirect holding | ▾ |
| 2026-02-13 | Allen Patricia L Director | Purchase | $109.66K 4,160 shares bought | 26.50% added Direct holding | ▾ |
| 2026-02-12 | Allen Patricia L Director | Purchase | $390.09K 15,700 shares bought | New holding Direct holding | ▾ |
Showing 15 / 15 record groups in 2026. The complete set is available through the API.
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