Oruka Therapeutics, Inc. SEC filings ORKA
Oruka Therapeutics, Inc. has 1,001 filings in SEC EDGAR's recent list, going back to Jun 26, 2009. Its latest annual report, Form ARS, was filed on Apr 17, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 10, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 26, 2026 (regulation fd disclosure, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 2, 2026 | Nov 2, 2026 |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Oct 26, 2026 | Oct 26, 2026 |
| 4 | Insider transaction | Oct 20, 2026 | Oct 20, 2026 |
| 4 | Insider transaction | Oct 15, 2026 | Oct 15, 2026 |
| 144 | Notice of proposed sale | Oct 15, 2026 | — |
| 4 | Insider transaction | Oct 13, 2026 | Oct 12, 2026 |
| 144 | Notice of proposed sale | Oct 13, 2026 | — |
| 4 | Insider transaction | Oct 2, 2026 | Oct 1, 2026 |
| 144 | Notice of proposed sale | Oct 1, 2026 | — |
| 4 | Insider transaction | Sep 21, 2026 | Sep 21, 2026 |
| 4 | Insider transaction | Sep 21, 2026 | Sep 21, 2026 |
| 144 | Notice of proposed sale | Sep 21, 2026 | — |
| 4 | Insider transaction | Sep 15, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 11, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 1, 2026 | Sep 1, 2026 |
| 4 | Insider transaction | Sep 1, 2026 | Sep 1, 2026 |
| 144 | Notice of proposed sale | Sep 1, 2026 | — |
| 144 | Notice of proposed sale | Sep 1, 2026 | — |
| 424B5 | Prospectus supplement | Aug 28, 2026 | — |
| EFFECT | Filing | Aug 27, 2026 | — |
| 4 | Insider transaction | Aug 25, 2026 | Aug 24, 2026 |
| 3 | Initial insider ownership | Aug 25, 2026 | Aug 24, 2026 |
| 8-K |
Current report
Officer or director change
|
Aug 24, 2026 | Aug 24, 2026 |
| S-3 | Shelf registration | Aug 21, 2026 | — |
| 4 | Insider transaction | Aug 17, 2026 | Aug 17, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 14, 2026 |
| 4 | Insider transaction | Aug 14, 2026 | Aug 13, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| 144 | Notice of proposed sale | Aug 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 12, 2026 | — |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| 4 | Insider transaction | Jul 15, 2026 | Jul 15, 2026 |
| 144 | Notice of proposed sale | Jul 15, 2026 | — |
| 4 | Insider transaction | Jul 13, 2026 | Jul 13, 2026 |
| 144 | Notice of proposed sale | Jul 13, 2026 | — |
| 144 | Notice of proposed sale | Jul 1, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jul 1, 2026 | — |
| 4 | Insider transaction | Jul 1, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 1, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 22, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 15, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 11, 2026 |
| 144 | Notice of proposed sale | Jun 11, 2026 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 4, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Jun 3, 2026 | Jun 2, 2026 |
| 8-K |
Current report
Other events
|
Jun 1, 2026 | May 29, 2026 |
| 4 | Insider transaction | May 22, 2026 | May 21, 2026 |
| 144 | Notice of proposed sale | May 21, 2026 | — |
| 4 | Insider transaction | May 18, 2026 | May 18, 2026 |
| 144 | Notice of proposed sale | May 18, 2026 | — |
| 4 | Insider transaction | May 15, 2026 | May 15, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 15, 2026 | — |
| 10-Q | Quarterly report | May 13, 2026 | Mar 31, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | May 4, 2026 | — |
| 4 | Insider transaction | May 1, 2026 | May 1, 2026 |
| 144 | Notice of proposed sale | May 1, 2026 | — |
| 8-K |
Current report
Results of operations, Other events
|
Apr 30, 2026 | Apr 27, 2026 |
| 424B5 | Prospectus supplement | Apr 29, 2026 | — |
| 424B5 | Prospectus supplement | Apr 27, 2026 | — |
| 424B5 | Prospectus supplement | Apr 27, 2026 | — |
| 8-K |
Current report
Regulation FD disclosure, Other events
|
Apr 27, 2026 | Apr 27, 2026 |
| 424B7 | Prospectus supplement | Apr 21, 2026 | — |
| ARS | Annual report to shareholders | Apr 17, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 17, 2026 | — |
| DEF 14A | Proxy statement | Apr 17, 2026 | Jun 2, 2026 |
| 4 | Insider transaction | Apr 15, 2026 | Apr 15, 2026 |
| 144 | Notice of proposed sale | Apr 15, 2026 | — |
| EFFECT | Filing | Apr 10, 2026 | — |
| CORRESP | Letter to the SEC | Apr 8, 2026 | — |
| UPLOAD | Letter from the SEC | Apr 7, 2026 | — |
| S-3 | Shelf registration | Apr 2, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| S-8 | Employee stock plan registration | Mar 12, 2026 | — |
| 10-K | Annual report | Mar 12, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Mar 2, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Feb 17, 2026 | Feb 17, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 30, 2026 | — |
| 4 | Insider transaction | Jan 23, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 23, 2026 |
| 4 | Insider transaction | Jan 23, 2026 | Jan 23, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 21, 2026 | — |
| 4 | Insider transaction | Jan 16, 2026 | Jan 15, 2026 |
| 4 | Insider transaction | Jan 2, 2026 | Jan 2, 2026 |
| 144 | Notice of proposed sale | Jan 2, 2026 | — |
| 4 | Insider transaction | Dec 19, 2025 | Dec 19, 2025 |
| 144 | Notice of proposed sale | Dec 19, 2025 | — |
| 4 | Insider transaction | Dec 11, 2025 | Dec 11, 2025 |
| 3 | Initial insider ownership | Dec 11, 2025 | Dec 11, 2025 |
| 8-K |
Current report
Officer or director change
|
Dec 11, 2025 | Dec 11, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 14, 2025 | — |
| 10-Q | Quarterly report | Nov 12, 2025 | Sep 30, 2025 |
| 424B3 | Prospectus | Nov 5, 2025 | — |
| 424B5 | Prospectus supplement | Nov 5, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 17, 2025 | — |
| S-3/A | Amendment no. 1 to form s-3 | Oct 14, 2025 | — |
| S-3/A | Amendment no. 1 to form s-3 | Oct 14, 2025 | — |
| S-3 | Shelf registration | Oct 3, 2025 | — |
| S-3 | Shelf registration | Oct 3, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 24, 2025 | — |
| 424B3 | Prospectus | Sep 22, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Sep 22, 2025 | Sep 17, 2025 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 19, 2025 | — |
| 4 | Insider transaction | Sep 19, 2025 | Sep 17, 2025 |
| 424B3 | Prospectus | Aug 11, 2025 | — |
| 10-Q | Quarterly report | Aug 11, 2025 | Jun 30, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 17, 2025 | — |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 3 | Initial insider ownership | Jul 1, 2025 | Jul 1, 2025 |
| 8-K |
Current report
Officer or director change
|
Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 4 | Insider transaction | Jun 3, 2025 | Jun 2, 2025 |
| 8-K |
Current report
Shareholder vote results
|
Jun 3, 2025 | Jun 2, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 15, 2025 | — |
| 424B3 | Prospectus | May 14, 2025 | — |
| 10-Q | Quarterly report | May 14, 2025 | Mar 31, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | May 13, 2025 | — |
| ARS | Annual report to shareholders | Apr 18, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 18, 2025 | — |
| DEF 14A | Proxy statement | Apr 18, 2025 | Jun 2, 2025 |
| EFFECT | Filing | Mar 11, 2025 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Mar 10, 2025 | — |
| POS AM | Post-effective amendment no. 1 to form s-1 | Mar 6, 2025 | — |
| S-8 | Employee stock plan registration | Mar 6, 2025 | — |
| 10-K | Annual report | Mar 6, 2025 | Dec 31, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 27, 2025 | — |
| 4 | Insider transaction | Feb 27, 2025 | Feb 10, 2025 |
| 3 | Initial insider ownership | Feb 27, 2025 | Feb 10, 2025 |
| 8-K |
Current report
Material agreement
|
Feb 5, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 4 | Insider transaction | Jan 24, 2025 | Jan 22, 2025 |
| 8-K |
Current report
Material agreement
|
Dec 19, 2024 | Dec 17, 2024 |
| EFFECT | Filing | Nov 26, 2024 | — |
| CORRESP | Letter to the SEC | Nov 22, 2024 | — |
| UPLOAD | Letter from the SEC | Nov 22, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Nov 21, 2024 | — |
| 4 | Insider transaction | Nov 21, 2024 | Nov 19, 2024 |
| 8-K |
Current report
Shareholder vote results
|
Nov 18, 2024 | Nov 14, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| S-8 | Employee stock plan registration | Nov 14, 2024 | — |
| 8-K |
Current report
Other events
|
Nov 14, 2024 | Nov 14, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 14, 2024 | — |
| S-1 | Registration statement | Nov 14, 2024 | — |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Oct 22, 2024 | — |
| DEF 14A | Proxy statement | Oct 18, 2024 | Nov 14, 2024 |
| PRE 14A | Preliminary proxy statement | Oct 7, 2024 | Nov 14, 2024 |
| SC 13G | Ownership over 5% (passive) | Oct 7, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Oct 4, 2024 | Oct 3, 2024 |
| SC 13D/A | Amended ownership over 5% (active) | Sep 13, 2024 | — |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Bylaw or fiscal year change, Regulation FD disclosure
|
Sep 13, 2024 | Sep 11, 2024 |
| SC 13D | Ownership over 5% (active) | Sep 6, 2024 | — |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 3 | Initial insider ownership | Sep 6, 2024 | Aug 29, 2024 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Results of operations, Change to shareholder rights, Auditor change, Change in control, Officer or director change, Bylaw or fiscal year change, Regulation FD disclosure
|
Sep 5, 2024 | Aug 29, 2024 |
| 4 | Insider transaction | Aug 30, 2024 | Aug 29, 2024 |
| 425 | Current report | Aug 27, 2024 | — |
| 8-K |
Current report
Other events
|
Aug 27, 2024 | Aug 26, 2024 |
| 8-K |
Current report
Shareholder vote results, Other events
|
Aug 23, 2024 | Aug 22, 2024 |
| 4 | Insider transaction | Aug 20, 2024 | Aug 16, 2024 |
| 425 | Current report | Aug 16, 2024 | — |
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- ORKA (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Menlo Park, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 907654
- Former names
- ARCA biopharma, Inc. (until Aug 30, 2024); NUVELO INC (until Jan 27, 2009); HYSEQ INC (until Jan 28, 2003)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.