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Viking shows 2.67M-share stake in Oruka Therapeutics (ORKA)

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Form Type
SCHEDULE 13G/A

Rhea-AI Filing Summary

Oruka Therapeutics, Inc. Schedule 13G/A Amendment No. 1 reports that Viking Global Investors and affiliated entities beneficially own 2,666,690 shares of Common Stock, representing 5.3% of the class, effective March 31, 2026. The filing removes David C. Ott as a reporting person due to his retirement.

The filing states the 2,666,690 shares comprise 1,600,014 shares held by Viking Global Opportunities entities and 1,066,676 shares held by Viking Global Opportunities Drawdown entities. Shares outstanding are listed as 50,167,623 as of March 31, 2026.

Positive

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Insights

Filing corrects reporting persons and reconfirms a 5.3% beneficial stake.

The amendment removes a former reporting person effective March 31, 2026 and reconfirms beneficial ownership of 2,666,690 shares by a group of affiliated Viking entities. The percentages are calculated against 50,167,623 shares outstanding as of March 31, 2026.

Confirmatory items to watch in subsequent filings include any changes to beneficial ownership, voting/dispositive power, or further amendments that restate the ownership table.

Passive disclosure; ownership remains below typical 10% activist threshold.

The group reports shared voting and dispositive power for the 2,666,690 shares, split between VGOP (1,600,014) and VGOD (1,066,676). The filing identifies executive committee members with shared authority but no sole holdings.

Market participants may note the 5.3% stake level and should track any future amendments for changes in voting or disposition rights.

Beneficial ownership (group) 2,666,690 shares Effective March 31, 2026
Viking Global Opportunities (VGOP) 1,600,014 shares Directly owned by VGOP
Viking Global Opportunities Drawdown (VGOD) 1,066,676 shares Directly owned by VGOD
Percent of class 5.3% Based on 50,167,623 shares outstanding as of March 31, 2026
Shares outstanding 50,167,623 shares As of March 31, 2026 (Form 10-Q)
beneficially own regulatory
"VGI beneficially owns 2,666,690 shares of Common Stock"
Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.
shared dispositive power regulatory
"Shared Dispositive Power 2,666,690.00"
Rule 13d-3 regulatory
"Based on Rule 13d-3 under the Act, VGI may be deemed to beneficially own"
Rule 13d-3 defines who is treated as the beneficial owner of a company’s shares for U.S. securities disclosure rules — essentially anyone who has the power to vote or direct how shares are voted, or the power to buy or sell them, even if they don’t hold the certificates. For investors this matters because crossing certain ownership thresholds triggers public filing and disclosure obligations and signals potential control or influence, much like having the keys to a car implies you can drive it even if it’s registered to someone else.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What stake does Viking Global report in Oruka Therapeutics (ORKA)?

Viking and affiliates report beneficial ownership of 2,666,690 shares, equal to 5.3% of the class. The figure is effective March 31, 2026 and is sourced from the amendment to the Schedule 13G/A.

How are the 2,666,690 shares split among Viking entities?

The filing shows 1,600,014 shares held by Viking Global Opportunities entities and 1,066,676 shares held by Viking Global Opportunities Drawdown entities, together totaling 2,666,690 shares as disclosed in Item 4.

Who was removed as a reporting person in this amendment?

The amendment states that David C. Ott retired effective March 31, 2026, and was removed as a reporting person because he no longer beneficially owns any of the reported shares.

What is the shares‑outstanding figure used to calculate the percentage?

The percentages are based on 50,167,623 shares outstanding as of March 31, 2026, cited from Oruka Therapeutics' Form 10-Q filed with the Commission on May 13, 2026.

Do Halvorsen or Shabet directly own the reported shares?

No. The filing states that neither O. Andreas Halvorsen nor Rose S. Shabet directly own the shares; each may be deemed to beneficially own the 2,666,690 shares through shared authority over Viking entities.





687604108

(CUSIP Number)
03/31/2026

(Date of Event Which Requires Filing of this Statement)


Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)




schemaVersion:


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G




Comment for Type of Reporting Person: See Item 4


SCHEDULE 13G



VIKING GLOBAL INVESTORS LP
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of VIKING GLOBAL INVESTORS LP (1)(2)
Date:05/15/2026
Viking Global Opportunities Parent GP LLC
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of Viking Global Opportunities Parent GP LLC (1)(2)
Date:05/15/2026
Viking Global Opportunities GP LLC
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of Viking Global Opportunities GP LLC (1)(2)
Date:05/15/2026
Viking Global Opportunities Portfolio GP LLC
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of Viking Global Opportunities Portfolio GP LLC (1)(2)
Date:05/15/2026
Viking Global Opportunities Illiquid Investments Sub-Master LP
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of Viking Global Opportunities Illiquid Investments Sub-Master LP (1)(2)
Date:05/15/2026
Viking Global Opportunities Drawdown GP LLC
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of Viking Global Opportunities Drawdown GP LLC (1)(2)
Date:05/15/2026
Viking Global Opportunities Drawdown Portfolio GP LLC
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of Viking Global Opportunities Drawdown Portfolio GP LLC (1)(2)
Date:05/15/2026
Viking Global Opportunities Drawdown (Aggregator) LP
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of Viking Global Opportunities Drawdown (Aggregator) LP (1)(2)
Date:05/15/2026
HALVORSEN OLE ANDREAS
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of O. Andreas Halvorsen (1)
Date:05/15/2026
Shabet Rose Sharon
Signature:/s/ Scott M. Hendler
Name/Title:Scott M. Hendler on behalf of Rose S. Shabet (2)
Date:05/15/2026

Comments accompanying signature: (1) Scott M. Hendler is signing on behalf of O. Andreas Halvorsen, individually and as an Executive Committee Member of VIKING GLOBAL PARTNERS LLC, on behalf of VIKING GLOBAL INVESTORS LP, and as an Executive Committee Member of VIKING GLOBAL OPPORTUNITIES PARENT GP LLC, on behalf of itself and VIKING GLOBAL OPPORTUNITIES GP LLC, VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC, VIKING GLOBAL OPPORTUNITIES ILLIQUID INVESTMENTS SUB-MASTER LP, VIKING GLOBAL OPPORTUNITIES DRAWDOWN GP LLC, VIKING GLOBAL OPPORTUNITIES DRAWDOWN PORTFOLIO GP LLC and VIKING GLOBAL OPPORTUNITIES DRAWDOWN (AGGREGATOR) LP, pursuant to an authorization and designation letter dated February 9, 2021, which was previously filed with the Commission as an exhibit to a Form 13G filed by Mr. Halvorsen on February 12, 2021 (SEC File No. 005-49737). (2) Scott M. Hendler is signing on behalf of Rose S. Shabet, individually and as an Executive Committee Member of VIKING GLOBAL PARTNERS LLC, on behalf of VIKING GLOBAL INVESTORS LP, and as an Executive Committee Member of VIKING GLOBAL OPPORTUNITIES PARENT GP LLC, on behalf of itself and VIKING GLOBAL OPPORTUNITIES GP LLC, VIKING GLOBAL OPPORTUNITIES PORTFOLIO GP LLC, VIKING GLOBAL OPPORTUNITIES ILLIQUID INVESTMENTS SUB-MASTER LP, VIKING GLOBAL OPPORTUNITIES DRAWDOWN GP LLC, VIKING GLOBAL OPPORTUNITIES DRAWDOWN PORTFOLIO GP LLC and VIKING GLOBAL OPPORTUNITIES DRAWDOWN (AGGREGATOR) LP, pursuant to an authorization and designation letter dated February 9, 2021, which was previously filed with the Commission as an exhibit to a Form 13G filed by Mr. Halvorsen on February 12, 2021 (SEC File No. 005-49737).
Exhibit Information

EXHIBIT A - JOINT FILING AGREEMENT