Over the past 12 months, Yarrow Bioscience insiders made no open-market purchases or sales of the stock.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Fund Group Gp, Llc Rtw | TenPercentOwner | 0 | 266,307 | 266,307 | 95.2% | 30 Jul, 2026 |
| 2 | David Domzalski | President And Ceo | 6,943 | 0 | 6,943 | 2.5% | 24 Jul, 2026 |
| 3 | Iain Stuart | Chief Scientific Officer | 1,919 | 0 | 1,919 | 0.7% | 24 Jul, 2026 |
| 4 | Mutya Harsch | Chief Legal Officer And Gc | 1,918 | 0 | 1,918 | 0.7% | 24 Jul, 2026 |
| 5 | Tyler Zeronda | Chief Financial Officer | 1,498 | 0 | 1,498 | 0.5% | 24 Jul, 2026 |
| 6 | Patrick G Lepore | Director | 1,029 | 0 | 1,029 | 0.4% | 16 Jan, 2025 |
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 |
|---|---|---|---|---|---|---|---|---|
| 29 Jul, 2026 | Fund Group Gp, Llc Rtw | TenPercentOwner | Disposed J | 133,290 | $0.00 | $0 | 266,307 | Indirect |
| 29 Jul, 2026 | Fund Group Gp, Llc Rtw | TenPercentOwner | Acquired J | 133,290 | $0.00 | $0 | 8,949,719 | Indirect |
| 27 Jul, 2026 | Tyler Zeronda | Director | Acquired A | 185,798 | $0.00 | $0 | 185,798 | Direct |
| 27 Jul, 2026 | Mona Ashiya | Director | Acquired A | 15,435 | $0.00 | $0 | 15,435 | Direct |
| 23 Jul, 2026 | David Domzalski | President And Ceo | Disposed F | 79,391 | $44.88 | $3.56Mn | 6,943 | Direct |
| 23 Jul, 2026 | Iain Stuart | Chief Scientific Officer | Disposed F | 15,405 | $44.88 | $691.38K | 1,919 | Direct |
| 23 Jul, 2026 | Mutya Harsch | Chief Legal Officer And Gc | Disposed F | 22,516 | $44.88 | $1.01Mn | 1,918 | Direct |
| 23 Jul, 2026 | Tyler Zeronda | Chief Financial Officer | Disposed F | 22,516 | $44.88 | $1.01Mn | 1,498 | Direct |
| 30 Jun, 2026 | Tyler Zeronda | Chief Financial Officer | Disposed F | 3,464 | $32.54 | $112.70K | 1,949 | Direct |
| 30 Jun, 2026 | Mutya Harsch | Chief Legal Officer And Gc | Disposed F | 3,464 | $32.54 | $112.70K | 2,369 | Direct |
| 30 Jun, 2026 | David Domzalski | President And Ceo | Disposed F | 12,214 | $32.54 | $397.38K | 8,531 | Direct |
| 30 Jun, 2026 | Iain Stuart | Chief Scientific Officer | Disposed F | 2,370 | $32.54 | $77.11K | 2,227 | Direct |
| 29 May, 2026 | David Domzalski | President And Ceo | Acquired A | 30,791 | $15.50 | $477.26K | 8,776 | Direct |
| 31 Mar, 2026 | Iain Stuart | Chief Scientific Officer | Disposed F | 2,876 | $29.88 | $85.92K | 2,247 | Direct |
| 31 Mar, 2026 | David Domzalski | President And Ceo | Disposed F | 14,232 | $29.88 | $425.18K | 8,040 | Direct |
| 31 Mar, 2026 | Tyler Zeronda | Chief Financial Officer | Disposed F | 4,007 | $29.88 | $119.71K | 1,996 | Direct |
| 31 Mar, 2026 | Mutya Harsch | Chief Legal Officer And Gc | Disposed F | 4,007 | $29.88 | $119.71K | 2,438 | Direct |
| 31 Dec, 2025 | David Domzalski | President And Ceo | Disposed F | 12,684 | $29.01 | $367.90K | 8,324 | Direct |
| 31 Dec, 2025 | Iain Stuart | Chief Scientific Officer | Disposed F | 2,448 | $29.01 | $71.00K | 2,305 | Direct |
| 31 Dec, 2025 | Tyler Zeronda | Chief Financial Officer | Disposed F | 7,858 | $29.01 | $227.92K | 2,076 | Direct |