Fairmount Funds Management LLC - Apr 29, 2025 Form 4 Insider Report for Jade Biosciences, Inc. (JBIO)

Role
Director, 10%+ Owner
Signature
/s/ Tomas Kiselak, Managing Member of Fairmount Funds Management LLC
Stock symbol
JBIO
Transactions as of
Apr 29, 2025
Transactions value $
$0
Form type
4
Date filed
5/1/2025, 06:16 PM
Previous filing
May 1, 2025
SEC
View on sec.gov

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction JBIO Stock Option (Right to Buy) Award $0 +23K $0.00 23K Apr 29, 2025 Common Stock 23K $10.14 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 This option represents a right to purchase 23,017 shares of the Issuer's common stock, which vests in full on the earlier of (i) April 29, 2026 or (ii) the date of the next annual meeting of the Issuer's stockholders, in each case, subject to the recipient's continued service to the Issuer.
F2 Under Mr. Kiselak's arrangement with Fairmount Funds Management LLC ("Fairmount"), Mr. Kiselak holds the option for one or more investment vehicles managed by Fairmount (each, a "Fairmount Fund"). Mr. Kiselak is obligated to turn over to Fairmount any net cash or stock received from the option for the benefit of such Fairmount Fund. Mr. Kiselak therefore disclaims beneficial ownership of the option and underlying common stock. Fairmount disclaims beneficial ownership of any of the reported securities, except to the extent of its pecuniary interest therein.

Remarks:

Fairmount, Fairmount Healthcare Fund II LP and Fairmount Healthcare Co-Invest IV L.P. may each be deemed a director by deputization of the Issuer by virtue of the fact that Tomas Kiselak serves on the board of directors of the Issuer and is a manager of Fairmount.