Over the past year, ZBIO insiders bought $11.42 million of stock (605.61K shares) on the open market and sold none.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Sciences Gp, Llc Enavate | TenPercentOwner | 0 | 3,761,359 | 3,761,359 | 27.6% | 18 Sep, 2024 |
| 2 | One Capital Management, Llc Sr | TenPercentOwner | 0 | 3,091,290 | 3,091,290 | 22.7% | 14 Oct, 2025 |
| 3 | Funds Management Llc Fairmount | Director | 0 | 2,359,025 | 2,359,025 | 17.3% | 01 Apr, 2026 |
| 4 | Patrick G Enright | Director | 11,990 | 1,832,669 | 1,844,659 | 13.5% | 14 Oct, 2025 |
| 5 | Jason Raleigh Nunn | Director | 0 | 1,173,395 | 1,173,395 | 8.6% | 14 Oct, 2025 |
| 6 | Biomedical Innovation Master Investors (Cayman) I L.P. Wellington | TenPercentOwner | 801,624 | 0 | 801,624 | 5.9% | 18 Sep, 2024 |
| 7 | Hongbo Lu | Director | 0 | 426,736 | 426,736 | 3.1% | 02 Apr, 2026 |
| 8 | Leon O Jr Moulder | Chief Executive Officer | 0 | 96,928 | 96,928 | 0.7% | 18 May, 2026 |
| 9 | Ting Xiao | Director | 47,000 | 0 | 47,000 | 0.3% | 11 Feb, 2025 |
| 10 | Patricia L Allen | Director | 19,860 | 0 | 19,860 | 0.1% | 13 Feb, 2026 |
| 11 | Jennifer A. Fox | Officer | 1,592 | 0 | 1,592 | 0.0% | 17 Jun, 2026 |
| 12 | Joseph L Farmer | Officer | 974 | 0 | 974 | 0.0% | 17 Jun, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 01 Sep, 2026 | Christy J. Oliger | Director | Acquired A | 37,000 | $0.00 | $0 | 37,000 | Direct |
| 15 Jun, 2026 | Hongbo Lu | Director | Acquired A | 18,500 | $0.00 | $0 | 18,500 | Direct |
| 15 Jun, 2026 | Leon O Jr Moulder | Director, Officer | Acquired A | 500,000 | $0.00 | $0 | 500,000 | Direct |
| 15 Jun, 2026 | James P Boylan | Director | Acquired A | 18,500 | $0.00 | $0 | 18,500 | Direct |
| 05 Feb, 2026 | Jennifer A. Fox | Officer | Acquired A | 1,592 | $13.35 | $21.25K | 1,592 | Direct |
| 05 Feb, 2026 | Joseph L Farmer | Officer | Acquired A | 974 | $13.35 | $13.00K | 974 | Direct |
| 15 Jun, 2026 | Jason Raleigh Nunn | Director | Acquired A | 18,500 | $0.00 | $0 | 18,500 | Direct |
| 15 Jun, 2026 | John J Orloff | Director | Acquired A | 18,500 | $0.00 | $0 | 18,500 | Direct |
| 15 Jun, 2026 | Patrick G Enright | Director | Acquired A | 18,500 | $0.00 | $0 | 18,500 | Direct |
| 15 Jun, 2026 | Moltke Lisa Von | Officer | Acquired A | 150,000 | $0.00 | $0 | 150,000 | Direct |
| 15 Jun, 2026 | Patricia L Allen | Director | Acquired A | 18,500 | $0.00 | $0 | 18,500 | Direct |
| 15 Jun, 2026 | Joseph L Farmer | Officer | Acquired A | 175,000 | $0.00 | $0 | 175,000 | Direct |
| 15 Jun, 2026 | Jennifer A. Fox | Officer | Acquired A | 125,000 | $0.00 | $0 | 125,000 | Direct |
| 18 May, 2026 | Leon O Jr Moulder | Chief Executive Officer | Acquired P | 60,000 | $16.88 | $1.01Mn | 96,928 | Indirect |
| 28 Apr, 2026 | Leon O Jr Moulder | Chief Executive Officer | Acquired P | 25,000 | $18.02 | $450.50K | 1,751,039 | Indirect |
| 29 Apr, 2026 | Leon O Jr Moulder | Chief Executive Officer | Acquired P | 35,000 | $17.62 | $616.70K | 1,786,039 | Indirect |
| 31 Mar, 2026 | Hongbo Lu | Director | Acquired P | 3,768 | $18.63 | $70.20K | 426,736 | Indirect |
| 31 Mar, 2026 | Funds Management Llc Fairmount | Director | Acquired P | 150,000 | $20.00 | $3.00Mn | 2,359,025 | Indirect |
| 30 Mar, 2026 | Leon O Jr Moulder | Chief Executive Officer | Acquired P | 20,000 | $18.23 | $364.60K | 1,692,039 | Indirect |
| 31 Mar, 2026 | Hongbo Lu | Director | Acquired P | 75,000 | $20.00 | $1.50Mn | 422,968 | Indirect |