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Fairmount, Mr. Harwin, and Mr. Kiselak disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein."}],"balance_after":1131954,"source":{"system":"sec-edgar","filing":"0001104659-26-080009","document":"tm2619616-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/907654/000110465926080009/tm2619616-1_4seq1.xml","form_type":"4"}},{"id":722022,"issuer":{"id":3781,"kind":"organization","name":"Oruka Therapeutics, Inc.","symbol":"ORKA"},"owners":[{"id":2222,"kind":"person","name":"Fairmount Funds Management LLC","position":1,"cik":"0001802528","reported_name":"Fairmount Funds Management LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2223,"kind":"person","name":"Fairmount Healthcare Fund II L.P.","position":2,"cik":"0001769651","reported_name":"Fairmount Healthcare Fund II L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":34247,"kind":"person","name":"Fairmount Healthcare Co-Invest III L.P.","position":3,"cik":"0002009690","reported_name":"Fairmount Healthcare Co-Invest III L.P.","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2224,"kind":"person","name":"Kiselak Tomas","position":4,"cik":"0001830177","reported_name":"Kiselak Tomas","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":2225,"kind":"person","name":"Harwin Peter Evan","position":5,"cik":"0001663607","reported_name":"Harwin Peter Evan","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2026-07-02T01:30:15.000Z","date":"2026-07-01","kind":"exercise","planned":false,"acquired":true,"shares":3553410,"ownership":{"direct":false,"nature":"By Fairmount Healthcare Fund II L.P."},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"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."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"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."}],"balance_after":4685364,"source":{"system":"sec-edgar","filing":"0001104659-26-080009","document":"tm2619616-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/907654/000110465926080009/tm2619616-1_4seq1.xml","form_type":"4"}},{"id":722020,"issuer":{"id":3781,"kind":"organization","name":"Oruka Therapeutics, Inc.","symbol":"ORKA"},"owners":[{"id":18149,"kind":"person","name":"Sandler Laura Lee","position":1,"cik":"0002075401","reported_name":"Sandler Laura Lee","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Employee Warrant (right to buy)","published_at":"2026-07-01T23:58:02.000Z","date":"2026-07-01","kind":"exercise","planned":true,"acquired":false,"shares":5000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The warrant vests as to 1/4 of the underlying shares on April 3, 2025 and as to 1/48 of the underlying shares monthly from April 3, 2025."}],"balance_after":79996,"derivative":{"exercise_price":7.8,"expiration_date":"2034-07-14","underlying":"Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0000907654-26-000069","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/907654/000090765426000069/form4.xml","form_type":"4"}},{"id":722019,"issuer":{"id":3781,"kind":"organization","name":"Oruka Therapeutics, Inc.","symbol":"ORKA"},"owners":[{"id":18149,"kind":"person","name":"Sandler Laura Lee","position":1,"cik":"0002075401","reported_name":"Sandler Laura Lee","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Operating Officer"}}],"security":"Common Stock","published_at":"2026-07-01T23:58:02.000Z","date":"2026-07-01","kind":"sale","planned":true,"acquired":false,"shares":500,"price":95.472,"value":47736.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan entered into on September 19, 2025."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $95.40 to $95.51, inclusive."}],"balance_after":236384,"source":{"system":"sec-edgar","filing":"0000907654-26-000069","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/907654/000090765426000069/form4.xml","form_type":"4"}}],"next_cursor":"2026-07-01T23:58:02.000000Z,722019"}