Fairmount Funds Management LLC bought JBIO

October 6, 2025 · Form 4 insider transaction

Fairmount Funds Management LLC bought 1,333,126 shares of Jade Biosciences, Inc. at $9.14 per share, a transaction worth $12.18M. The trade was recorded as grant or award and disclosed on an SEC Form 4, filed 2 days after the transaction.

Direction
Acquired (buy-side)
Shares
1,333,126
Price
$9.14
Total value
$12.18M
RoleDirector, 10% owner
SecurityCommon Stock
Transaction codeA: Grant or award
Transaction dateOctober 6, 2025
Filing dateOctober 8, 2025
Shares owned after1,897,677
OwnershipIndirect
10b5-1 planNo
AmendedNo

Footnotes

The shares of Common Stock and Pre-Funded Warrants were purchased from the Issuer in a private placement, which transaction is exempt from Section 16(b) in accordance with Rule 16b-3(d)(1) promulgated under the Securities Exchange Act of 1934, as amended.; Fairmount Funds Management LLC ("Fairmount") is the investment manager for Fairmount Healthcare Fund II L.P. and Fairmount Healthcare Co-Invest IV L.P. The managers of Fairmount are Peter Harwin and Tomas Kiselak. Fairmount, Mr. Harwin, and Mr. Kiselak disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.

View the original Form 4 on SEC EDGAR