Fairmount Funds Management LLC - 02 Jun 2025 Form 4 Insider Report for Oruka Therapeutics, Inc. (ORKA)

Role: Director, 10%+ Owner
Signature: /s/ Peter Harwin, Managing Member of Fairmount Funds Management LLC
Issuer symbol: ORKA
Transactions as of: 02 Jun 2025
Net transactions value: $0
Form type: 4
Filing time: 03 Jun 2025, 16:30:57 UTC
Previous filing: 02 Jun 2025
Next filing: 11 Jun 2025
SEC: View on sec.gov

Reporting Owners (5)

Name	Relationship	Address	Signature	Signature date	CIK
Fairmount Funds Management LLC	Director, 10%+ Owner	200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN	/s/ Peter Harwin, Managing Member of Fairmount Funds Management LLC	03 Jun 2025	0001802528
Fairmount Healthcare Fund II L.P.	Director, 10%+ Owner	200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN	/s/ Peter Harwin, Managing Member of Fairmount Healthcare Fund II L.P.	03 Jun 2025	0001769651
Fairmount Healthcare Co-Invest III L.P.	Director	200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN	/s/ Peter Harwin, Managing Member of Fairmount Healthcare Co-Invest III L.P	03 Jun 2025	0002009690
Harwin Peter Evan	Director, 10%+ Owner	200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN	/s/ Peter Harwin	03 Jun 2025	0001663607
Kiselak Tomas	Director, 10%+ Owner	200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN	/s/ Tomas Kiselak	03 Jun 2025	0001830177

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	ORKA	Stock Option (Right to Buy)	Award	$0	+17,500		$0.000000	17,500	02 Jun 2025	Common Stock	17,500	$11.77	By: Peter Harwin	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 17,500 shares of the Issuer's common stock, which vests as to 1/12 of the option monthly from June 2, 2025, subject to the recipient's continued service to the Issuer.
F2	Under Mr. Harwin's arrangement with Fairmount Funds Management LLC ("Fairmount"), Mr. Harwin holds the option for one or more investment vehicles managed by Fairmount (each, a "Fairmount Fund"). Mr. Harwin is obligated to turn over to Fairmount any net cash or stock received from the option for the benefit of such Fairmount Fund. Mr. Harwin 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.

Content

This option represents a right to purchase 17,500 shares of the Issuer's common stock, which vests as to 1/12 of the option monthly from June 2, 2025, subject to the recipient's continued service to the Issuer.

Under Mr. Harwin's arrangement with Fairmount Funds Management LLC ("Fairmount"), Mr. Harwin holds the option for one or more investment vehicles managed by Fairmount (each, a "Fairmount Fund"). Mr. Harwin is obligated to turn over to Fairmount any net cash or stock received from the option for the benefit of such Fairmount Fund. Mr. Harwin 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 III L.P. may each be deemed a director by deputization of the Issuer by virtue of the fact that Peter Harwin serves on the board of directors of the Issuer and is a manager of Fairmount.