JBIO
Jade Biosciences, Inc.
NASDAQ · Healthcare · Biotechnology · US
$19.90
+0.25%0
Insider buys (3m)
0
Insider sells (3m)
$0.00
Net value (3m)
+16.9%
Price return (3m)
Form 4 filings
| Date | Insider | Activity | Shares | Price |
|---|---|---|---|---|
| Jun 26, 2026 | Eisner Mark · director | A-Award | 47,675 | $22 |
| Jun 11, 2026 | Fairmount Funds Management LLC · director, 10 percent owner: | A-Award | 34,843 | $15 |
| Jun 11, 2026 | Lavelle Erin · director | A-Award | 34,843 | $15 |
| Jun 11, 2026 | Klein Lawrence Otto · director | A-Award | 34,843 | $15 |
| Jun 11, 2026 | DOBMEIER ERIC · director | A-Award | 34,843 | $15 |
| Jun 11, 2026 | CAIN CHRISTOPHER W. · director | A-Award | 34,843 | $15 |
| Feb 13, 2026 | King Andrew James · officer: See Remarks | A-Award | 41,250 | $0.00 |
| Feb 13, 2026 | King Andrew James · officer: See Remarks | A-Award | 247,500 | $15 |
| Feb 13, 2026 | Dahms Bradford D. · officer: Chief Financial Officer | A-Award | 226,875 | $15 |
| Feb 13, 2026 | Dahms Bradford D. · officer: Chief Financial Officer | A-Award | 37,813 | $0.00 |
| Feb 13, 2026 | Balta Elizabeth · officer: See Remarks | A-Award | 168,750 | $15 |
| Feb 13, 2026 | Balta Elizabeth · officer: See Remarks | A-Award | 28,125 | $0.00 |
| Feb 13, 2026 | Frohlich Tom · director, officer: Chief Executive Officer | A-Award | 472,500 | $15 |
| Feb 13, 2026 | Frohlich Tom · director, officer: Chief Executive Officer | A-Award | 78,750 | $0.00 |
| Oct 8, 2025 | Fairmount Funds Management LLC · director, 10 percent owner: | A-Award | 855,047 | $0.00 |
| Oct 8, 2025 | Fairmount Funds Management LLC · director, 10 percent owner: | A-Award | 1,333,126 | $9.14 |
| Jul 14, 2025 | Dahms Bradford D. · officer: Chief Financial Officer | A-Award | 526,000 | $9.00 |
| May 19, 2025 | Frohlich Tom · director, officer: Chief Executive Officer | Purchase | 6,000 | $7.40 |
| May 1, 2025 | Klein Lawrence Otto · director | A-Award | 23,017 | $10 |
| May 1, 2025 | Fairmount Funds Management LLC · director, 10 percent owner: | A-Award | 23,017 | $10 |
| May 1, 2025 | CAIN CHRISTOPHER W. · director | A-Award | 23,017 | $10 |
| May 1, 2025 | DOBMEIER ERIC · director | A-Award | 23,017 | $10 |
| May 1, 2025 | Lavelle Erin · director | A-Award | 23,017 | $10 |
Institutional positioning
13F filings over the trailing two quarters
New 81Increased 101Reduced 60Sold out 17
| Filer | Action | Shares | Filed |
|---|---|---|---|
| FMR LLC | Increased | 9,126,877 | Aug 13, 2026 |
| FMR LLC | Increased | 7,085,423 | May 15, 2026 |
| Jupiter Topco LLC | New Position | 6,273,262 | Aug 14, 2026 |
| Fairmount Funds Management LLC | Unchanged | 4,553,494 | Aug 14, 2026 |
| FAIRMOUNT FUNDS MANAGEMENT LLC | Unchanged | 4,553,494 | May 15, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 3,671,083 | Aug 14, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | Unchanged | 3,671,083 | May 15, 2026 |
| BELLEVUE GROUP AG | Increased | 3,501,502 | May 15, 2026 |
| VR ADVISER, LLC | Unchanged | 3,220,364 | May 15, 2026 |
| VR Adviser, LLC | Unchanged | 3,220,364 | Aug 14, 2026 |
| JANUS HENDERSON GROUP PLC | New Position | 3,105,669 | May 18, 2026 |
| Bellevue Group AG | Reduced | 3,057,996 | Aug 14, 2026 |
| Paradigm Biocapital Advisors LP | New Position | 2,857,405 | Aug 14, 2026 |
| BlackRock, Inc. | Increased | 2,801,451 | Aug 7, 2026 |
| FRANKLIN RESOURCES INC | New Position | 2,792,080 | Aug 13, 2026 |
Insider activity from SEC Form 4; institutional positioning from 13F filings · Latest filing Jun 26, 2026