Key facts
- This page summarizes Fairmount Funds Management LLC's Form 4 filing for Oruka Therapeutics, Inc. (ORKA).
- 3 reported transactions and 5 derivative rows are listed below.
- Accepted by SEC: 01 Jul 2026, 21:30.
Fairmount Funds Management LLC - 01 Jul 2026 Form 4 Insider Report for Oruka Therapeutics, Inc. (ORKA)
- Reporting relationship
- Director, 10%+ Owner
- Issuer ticker
- ORKA
- Reported as of
- 01 Jul 2026
- Net transaction value
- -$300,014,406
- SEC form
- 4
- Accepted by SEC
- 01 Jul 2026, 21:30:15 UTC
- Prior SEC filing
- 23 Jun 2026
- Next SEC filing
- 20 Jul 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Tomas Kiselak, Managing Member of Fairmount Funds Management LLC
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Fairmount Funds Management LLC filed Form 4 for Oruka Therapeutics, Inc. (ORKA) on 01 Jul 2026.
Change
- Previous filing in this sequence was filed on 23 Jun 2026.
- Current net transaction value: -$300,014,406.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (5)
CIK 0001802528
Primary reporting owner
Fairmount Funds Management LLC
- Relationship
- Director, 10%+ Owner
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Tomas Kiselak, Managing Member of Fairmount Funds Management LLC
- Signature date
- 01 Jul 2026
CIK 0001769651
Fairmount Healthcare Fund II L.P.
- Relationship
- Director, 10%+ Owner
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Tomas Kiselak, Managing Member of Fairmount Healthcare Fund II, L.P.
- Signature date
- 01 Jul 2026
CIK 0002009690
Fairmount Healthcare Co-Invest III L.P.
- Relationship
- Director, 10%+ Owner
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Tomas Kiselak, Managing Member of Fairmount Healthcare Co-Invest III, L.P.
- Signature date
- 01 Jul 2026
CIK 0001830177
Kiselak Tomas
- Relationship
- Director, 10%+ Owner
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Tomas Kiselak
- Signature date
- 01 Jul 2026
CIK 0001663607
Harwin Peter Evan
- Relationship
- Director, 10%+ Owner
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Peter Harwin
- Signature date
- 01 Jul 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
ORKA
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +3,553,410
- Change %
- +314%
- Price
- Shares after
- 4,685,364
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F1, F2
ORKA
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +3,553,410
- Change %
- +314%
- Price
- Shares after
- 4,685,364
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F1, F2
ORKA
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +3,553,410
- Change %
- +314%
- Price
- Shares after
- 4,685,364
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F1, F2
ORKA
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +3,553,410
- Change %
- +314%
- Price
- Shares after
- 4,685,364
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F1, F2
ORKA
transaction
Common Stock
Conversion of derivative security
- Transaction value
- Shares
- +3,553,410
- Change %
- +314%
- Price
- Shares after
- 4,685,364
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F1, F2
ORKA
transaction
Common Stock
Sale
- Transaction value
- $300,014,406
- Shares
- -3,553,410
- Change %
- -76%
- Price
- $84.43
- Shares after
- 1,131,954
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F2
ORKA
transaction
Common Stock
Sale
- Transaction value
- $300,014,406
- Shares
- -3,553,410
- Change %
- -76%
- Price
- $84.43
- Shares after
- 1,131,954
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F2
ORKA
transaction
Common Stock
Sale
- Transaction value
- $300,014,406
- Shares
- -3,553,410
- Change %
- -76%
- Price
- $84.43
- Shares after
- 1,131,954
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F2
ORKA
transaction
Common Stock
Sale
- Transaction value
- $300,014,406
- Shares
- -3,553,410
- Change %
- -76%
- Price
- $84.43
- Shares after
- 1,131,954
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F2
ORKA
transaction
Common Stock
Sale
- Transaction value
- $300,014,406
- Shares
- -3,553,410
- Change %
- -76%
- Price
- $84.43
- Shares after
- 1,131,954
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Footnotes
- F2
ORKA
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,573,308
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Co-Invest III L.P.
- Footnotes
- F2
ORKA
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,573,308
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Co-Invest III L.P.
- Footnotes
- F2
ORKA
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,573,308
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Co-Invest III L.P.
- Footnotes
- F2
ORKA
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,573,308
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Co-Invest III L.P.
- Footnotes
- F2
ORKA
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,573,308
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Co-Invest III L.P.
- Footnotes
- F2
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
ORKA
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -42,641
- Change %
- -31%
- Price
- $0.000000*
- Shares after
- 94,497
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Underlying class
- Common Stock
- Underlying amount
- 3,553,410
- Exercise price
- Footnotes
- F1, F2
ORKA
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -42,641
- Change %
- -31%
- Price
- $0.000000*
- Shares after
- 94,497
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Underlying class
- Common Stock
- Underlying amount
- 3,553,410
- Exercise price
- Footnotes
- F1, F2
ORKA
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -42,641
- Change %
- -31%
- Price
- $0.000000*
- Shares after
- 94,497
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Underlying class
- Common Stock
- Underlying amount
- 3,553,410
- Exercise price
- Footnotes
- F1, F2
ORKA
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -42,641
- Change %
- -31%
- Price
- $0.000000*
- Shares after
- 94,497
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Underlying class
- Common Stock
- Underlying amount
- 3,553,410
- Exercise price
- Footnotes
- F1, F2
ORKA
transaction
Derivative
Series B Preferred Stock
Conversion of derivative security
- Transaction value
- Shares
- -42,641
- Change %
- -31%
- Price
- $0.000000*
- Shares after
- 94,497
- Date
- 01 Jul 2026
- Ownership
- By Fairmount Healthcare Fund II L.P.
- Underlying class
- Common Stock
- Underlying amount
- 3,553,410
- Exercise price
- Footnotes
- F1, F2
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 2 footnotes
Footnote F1
Each share of Series B Preferred Stock is convertible at the option of the holder into 83.3332 shares of Common Stock, subject to certain beneficial ownership limitations, including that a holder of Series B Preferred Stock is prohibited from converting shares of Series B Preferred Stock into shares of Common Stock if, as a result of such conversion, such holder, together with its affiliates, would beneficially own more than 19.99% of the total number of shares of Common Stock issued and outstanding immediately after giving effect to such conversion. On July 1, 2026, the Reporting Persons converted 42,641 shares of Series B Preferred Stock into 3,553,410 shares of Common Stock for no cash consideration, in accordance with the Certificate of Designation for the Series B Convertible Preferred Stock.
Footnote F2
Fairmount Funds Management LLC ("Fairmount") is the investment manager for Fairmount Healthcare Fund II L.P. and Fairmount Healthcare Co-Invest III 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.
SEC remarks
Fairmount may be deemed a director by deputization of Issuer by virtue of the fact that Peter Harwin serves on the board of directors of the Issuer and is also a Managing Member of Fairmount.