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SCHEDULE 13D/A Filed 2026-07-01 Event 2026-07-01 SEC 0001104659-26-080010 →

Fairmount Funds Management LLC → ORUKA THERAPEUTICS, INC. ORKA

Stake: 19.50% Shares: 14,553,895 CUSIP: 687604108 Class: Common Stock, $0.001 par value per share

Item 4 — Purpose of Transaction

Not extracted from this filing — typically because it's an amendment (13D/A) and Item 4 is unchanged from the parent filing. Read the raw SEC filing →

Cross-References

Insider Activity (last 365d)
41 transactions
0 buys · 29 sales · 10 awards/exercises
Issuer Cluster
7 13D/G filings on this issuer
6 other filings besides this one
Filer Track Record
22 filings by this filer
21 other filings in the data moat
Short Interest · settle 2026-09-30
DTC 6.32
7,778,131 shares short · +2.0% vs prior

Institutional Consensus · 2026-06-30

Held by elite portfolio managers
2 holders · $161.27M
Point72 Asset MgmtViking Global

Post-Filing Returns · since 2026-07-01 on ORKA

+1 day
0.0%
+5 days
0.0%
+30 days
—
+60 days
—
+90 days
—
+180 days
—

Anchor price 84.50 on closest trading day on/after 2026-07-01. Source: Yahoo Finance daily adj_close (split + dividend adjusted).

Form 4 Insider Transactions · last 365d

DateInsiderRoleTypeSharesPriceValue
2026-10-01 Klein Lawrence Otto director, officer Option exercise 25,000 $7.80 $195K
2026-10-01 Klein Lawrence Otto director, officer Sale 16,246 $83.40 $1.35M
2026-10-01 Klein Lawrence Otto director, officer Sale 8,554 $84.03 $719K
2026-10-01 Klein Lawrence Otto director, officer Sale 200 $84.78 $17K
2026-09-15 Goncalves Joana officer Option exercise 3,500 $6.84 $24K
2026-09-15 Goncalves Joana officer Option exercise 3,500 $7.80 $27K
2026-09-15 Goncalves Joana officer Sale 2,384 $91.10 $217K
2026-09-15 Goncalves Joana officer Sale 3,150 $92.03 $290K
2026-09-15 Goncalves Joana officer Sale 1,366 $92.99 $127K
2026-09-15 Goncalves Joana officer Sale 100 $94.22 $9K
2026-09-15 Goncalves Joana officer Sale 947 $95.71 $91K
2026-09-15 Agarwal Arjun officer Sale 560 $95.71 $54K
2026-09-15 Klein Lawrence Otto director, officer Sale 2,452 $95.71 $235K
2026-09-15 Quinlan Paul T officer Sale 1,039 $95.71 $99K
2026-09-15 Sandler Laura Lee officer Sale 906 $95.71 $87K
2026-09-11 Agarwal Arjun officer Option exercise 8,000 $12.50 $100K
2026-09-11 Agarwal Arjun officer Option exercise 1,459 $34.39 $50K
2026-09-11 Agarwal Arjun officer Sale 3,000 $91.11 $273K
2026-09-11 Agarwal Arjun officer Sale 4,051 $92.41 $374K
2026-09-11 Agarwal Arjun officer Sale 2,208 $93.26 $206K
2026-09-11 Agarwal Arjun officer Sale 200 $94.02 $19K
2026-07-15 Goncalves Joana officer Option exercise 3,500 $6.84 $24K
2026-07-15 Goncalves Joana officer Option exercise 3,500 $7.80 $27K
2026-07-15 Goncalves Joana officer Sale 400 $84.36 $34K
2026-07-15 Goncalves Joana officer Sale 2,497 $85.86 $214K
Showing 25 of 41

Other 13D/G Filings on ORUKA THERAPEUTICS, INC.

FiledFormFilerStakeShares
2025-03-10 SCHEDULE Fairmount Funds Management LLC 19.99% 8,511,824 view →
2022-07-08 SC Funicular Funds, LP — — view →
2022-04-14 SC Funicular Fund, LP — — view →
2022-04-04 SC Funicular Fund, LP — — view →
2018-03-05 SC Growth Equity Opportunities IV, LLC — — view →
2018-01-04 SC SABBY MANAGEMENT, LLC — — view →

Other Filings by Fairmount Funds Management LLC

FiledFormIssuerStakeShares
2026-10-15 SCHEDULE 13D Alaunos Therapeutics, Inc. 19.99% 858,789 view →
2026-10-09 SCHEDULE 13D/A SPYRE THERAPEUTICS, INC. 9.99% 9,354,200 view →
2026-09-11 SCHEDULE 13D Korsana Biosciences, Inc. 19.99% 9,103,729 view →
2026-09-03 SCHEDULE 13D/A Apogee Therapeutics, Inc. — 0 view →
2026-07-20 SCHEDULE 13D/A Crescent Biopharma, Inc. — 6,593,385 view →
2026-06-23 SCHEDULE 13D/A SPYRE THERAPEUTICS, INC. SYRE — 8,835,440 view →
2026-06-23 SCHEDULE 13D/A Apogee Therapeutics, Inc. APGE 9.99% 6,713,519 view →
2026-06-09 SCHEDULE 13D/A Jade Biosciences, Inc. JBIO 19.99% 14,069,494 view →
2026-05-13 SCHEDULE 13D/A Viridian Therapeutics, Inc.\DE VRDN — 17,201,800 view →
2026-01-22 SCHEDULE Cogent Biosciences, Inc. COGT 9.90% 16,261,918 view →
2026-01-22 SCHEDULE Apogee Therapeutics, Inc. APGE 9.99% 6,047,027 view →
2025-10-14 SCHEDULE Apogee Therapeutics, Inc. APGE 9.99% 5,776,881 view →
2025-09-15 SCHEDULE Dianthus Therapeutics, Inc. /DE/ DNTH 9.90% 4,052,052 view →
2025-03-10 SCHEDULE Oruka Therapeutics, Inc. ORKA 19.99% 8,511,824 view →
2024-04-01 SC Cogent Biosciences, Inc. COGT — — view →
2024-04-01 SC Dianthus Therapeutics, Inc. /DE/ DNTH — — view →
2024-04-01 SC Viridian Therapeutics, Inc.\DE VRDN — — view →
2024-04-01 SC Apogee Therapeutics, Inc. APGE — — view →
2023-12-11 SC Spyre Therapeutics, Inc. SYRE — — view →
2023-06-13 SC Cogent Biosciences, Inc. COGT — — view →
Showing 20 of 21

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