Across the past 12 months, Jade Biosciences insiders reported no open-market purchases or sales.
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Funds Management Llc Fairmount | Director, TenPercentOwner | 0 | 1,897,677 | 1,897,677 | 74.7% | 08 Oct, 2025 |
| 2 | Andrew James King | Officer | 386,113 | 0 | 386,113 | 15.2% | 13 Feb, 2026 |
| 3 | Tom Frohlich | Chief Executive Officer | 86,331 | 0 | 86,331 | 3.4% | 13 Feb, 2026 |
| 4 | Venture Fund Xii, L.P. Atlas | TenPercentOwner | 66,508 | 0 | 66,508 | 2.6% | 19 Jul, 2022 |
| 5 | Bradford D. Dahms | Chief Financial Officer | 37,813 | 0 | 37,813 | 1.5% | 13 Feb, 2026 |
| 6 | Capital Management, L.P. Ra | TenPercentOwner | 0 | 36,794 | 36,794 | 1.4% | 30 Apr, 2025 |
| 7 | Elizabeth Balta | Officer | 28,125 | 0 | 28,125 | 1.1% | 13 Feb, 2026 |
| 8 | David S. Grayzel | Director | 0 | 414 | 414 | 0.0% | 11 Apr, 2024 |
| 9 | Benjamin T Dake | Officer | 407 | 0 | 407 | 0.0% | 02 Aug, 2024 |
| 10 | Hunter Gillies | Chief Medical Officer | 160 | 0 | 160 | 0.0% | 14 Jun, 2024 |
| 11 | George A Eldridge | Officer | 143 | 0 | 143 | 0.0% | 14 Jun, 2024 |
| 12 | Ralph Niven | Chief Scientific Officer | 46 | 0 | 46 | 0.0% | 07 Feb, 2024 |
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 |
|---|---|---|---|---|---|---|---|---|
| 25 Jun, 2026 | Mark Eisner | Director | Acquired A | 47,675 | $0.00 | $0 | 47,675 | Direct |
| 09 Jun, 2026 | Funds Management Llc Fairmount | Director, TenPercentOwner | Acquired A | 34,843 | $0.00 | $0 | 34,843 | Direct |
| 09 Jun, 2026 | Christopher W. Cain | Director | Acquired A | 34,843 | $0.00 | $0 | 34,843 | Direct |
| 09 Jun, 2026 | Lawrence Otto Klein | Director | Acquired A | 34,843 | $0.00 | $0 | 34,843 | Direct |
| 09 Jun, 2026 | Erin Lavelle | Director | Acquired A | 34,843 | $0.00 | $0 | 34,843 | Direct |
| 09 Jun, 2026 | Eric Dobmeier | Director | Acquired A | 34,843 | $0.00 | $0 | 34,843 | Direct |
| 12 Feb, 2026 | Andrew James King | Officer | Acquired A | 41,250 | $0.00 | $0 | 386,113 | Direct |
| 12 Feb, 2026 | Bradford D. Dahms | Chief Financial Officer | Acquired A | 37,813 | $0.00 | $0 | 37,813 | Direct |
| 12 Feb, 2026 | Elizabeth Balta | Officer | Acquired A | 28,125 | $0.00 | $0 | 28,125 | Direct |
| 12 Feb, 2026 | Tom Frohlich | Chief Executive Officer | Acquired A | 78,750 | $0.00 | $0 | 86,331 | Direct |
| 12 Feb, 2026 | Tom Frohlich | Chief Executive Officer | Acquired A | 472,500 | $0.00 | $0 | 472,500 | Direct |
| 12 Feb, 2026 | Elizabeth Balta | Officer | Acquired A | 168,750 | $0.00 | $0 | 168,750 | Direct |
| 12 Feb, 2026 | Bradford D. Dahms | Chief Financial Officer | Acquired A | 226,875 | $0.00 | $0 | 226,875 | Direct |
| 12 Feb, 2026 | Andrew James King | Officer | Acquired A | 247,500 | $0.00 | $0 | 247,500 | Direct |
| 06 Oct, 2025 | Funds Management Llc Fairmount | Director, TenPercentOwner | Acquired A | 1,333,126 | $9.14 | $12.18Mn | 1,897,677 | Indirect |
| 06 Oct, 2025 | Funds Management Llc Fairmount | Director, TenPercentOwner | Acquired A | 855,047 | $9.14 | $7.82Mn | 855,047 | Indirect |
| 14 Jul, 2025 | Bradford D. Dahms | Chief Financial Officer | Acquired A | 526,000 | $0.00 | $0 | 526,000 | Direct |
| 16 May, 2025 | Tom Frohlich | Chief Executive Officer | Acquired P | 6,000 | $7.40 | $44.40K | 6,000 | Direct |
| 29 Apr, 2025 | Lawrence Otto Klein | Director | Acquired A | 23,017 | $0.00 | $0 | 23,017 | Direct |
| 29 Apr, 2025 | Eric Dobmeier | Director | Acquired A | 23,017 | $0.00 | $0 | 23,017 | Direct |