Octave Specialty Group, Inc. SEC filings OSG
Octave Specialty Group, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Oct 12, 2010. Its latest annual report, Form ARS, was filed on Apr 10, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 6, 2026 (results of operations). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 30, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Oct 27, 2026 | — |
| 4 | Insider transaction | Oct 6, 2026 | Oct 3, 2026 |
| 4 | Insider transaction | Oct 6, 2026 | Oct 3, 2026 |
| 4 | Insider transaction | Oct 6, 2026 | Oct 3, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| 4 | Insider transaction | Oct 5, 2026 | Oct 1, 2026 |
| S-8 | Employee stock plan registration | Aug 6, 2026 | — |
| S-8 POS | Filing | Aug 6, 2026 | — |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 31, 2026 | — |
| 4 | Insider transaction | Jul 13, 2026 | Jul 9, 2026 |
| 4 | Insider transaction | Jul 13, 2026 | Jul 9, 2026 |
| 4 | Insider transaction | Jul 13, 2026 | Jul 9, 2026 |
| 4 | Insider transaction | Jul 7, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 7, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 7, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 7, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 7, 2026 | Jul 1, 2026 |
| 4 | Insider transaction | Jul 7, 2026 | Jul 1, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 29, 2026 | May 28, 2026 |
| DEFA14A | Additional proxy material | May 14, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 11, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | May 11, 2026 | — |
| 10-Q | Quarterly report | May 6, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 6, 2026 | May 6, 2026 |
| ARS | Annual report to shareholders | Apr 10, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 10, 2026 | — |
| DEF 14A | Proxy statement | Apr 10, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Material agreement, New debt
|
Apr 7, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| 4 | Insider transaction | Apr 2, 2026 | Apr 1, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 25, 2026 | Mar 10, 2026 |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 25, 2026 | Mar 23, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 3, 2026 |
| 10-K | Annual report | Mar 4, 2026 | Dec 31, 2025 |
| 4/A | Form 4/a | Mar 3, 2026 | Sep 29, 2025 |
| 4/A | Form 4/a | Mar 3, 2026 | Sep 29, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 23, 2026 | Feb 23, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 12, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Feb 11, 2026 | — |
| 8-K | Current report | Jan 6, 2026 | Jan 6, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 1, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 3 | Initial insider ownership | Dec 17, 2025 | Dec 11, 2025 |
| 8-K |
Current report
Auditor change
|
Dec 15, 2025 | Dec 10, 2025 |
| 4 | Insider transaction | Nov 14, 2025 | Nov 12, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 13, 2025 | — |
| 8-K |
Current report
Bylaw or fiscal year change
|
Nov 10, 2025 | Nov 10, 2025 |
| 10-Q | Quarterly report | Nov 10, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2025 | Nov 10, 2025 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Regulation FD disclosure
|
Nov 3, 2025 | Oct 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 17, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 9, 2025 | — |
| 4/A | Form 4/a | Oct 3, 2025 | Oct 3, 2025 |
| 4/A | Form 4/a | Oct 3, 2025 | Oct 3, 2025 |
| 4/A | Form 4/a | Oct 3, 2025 | Oct 3, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 3, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 3, 2025 |
| 4 | Insider transaction | Oct 3, 2025 | Oct 3, 2025 |
| 4/A | Form 4/a | Oct 3, 2025 | Jul 9, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 2, 2025 | Oct 1, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Oct 1, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 29, 2025 |
| 4 | Insider transaction | Sep 30, 2025 | Sep 29, 2025 |
| 3 | Initial insider ownership | Sep 30, 2025 | Sep 29, 2025 |
| 8-K |
Current report
Officer or director change
|
Sep 30, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Officer or director change
|
Sep 29, 2025 | Sep 29, 2025 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Sep 29, 2025 | Sep 29, 2025 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Unregistered share sale, Regulation FD disclosure
|
Sep 29, 2025 | Sep 29, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Aug 14, 2025 | — |
| 4 | Insider transaction | Aug 11, 2025 | Aug 11, 2025 |
| 10-Q | Quarterly report | Aug 7, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2025 | Aug 7, 2025 |
| 4 | Insider transaction | Jul 9, 2025 | Jul 9, 2025 |
| 4 | Insider transaction | Jul 9, 2025 | Jul 9, 2025 |
| 4 | Insider transaction | Jul 9, 2025 | Jul 9, 2025 |
| 4 | Insider transaction | Jul 9, 2025 | Jul 9, 2025 |
| 4 | Insider transaction | Jul 9, 2025 | Jul 9, 2025 |
| 8-K |
Current report
Material agreement, Unregistered share sale, Regulation FD disclosure
|
Jul 7, 2025 | Jul 3, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jul 1, 2025 |
| 8-K |
Current report
Material agreement
|
Jun 16, 2025 | Jun 10, 2025 |
| 8-K |
Current report
Shareholder vote results
|
May 30, 2025 | May 28, 2025 |
| 4 | Insider transaction | May 15, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 14, 2025 |
| 4 | Insider transaction | May 14, 2025 | May 14, 2025 |
| 10-Q | Quarterly report | May 12, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 12, 2025 | May 12, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 30, 2025 | — |
| ARS | Annual report to shareholders | Apr 11, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 11, 2025 | — |
| DEF 14A | Proxy statement | Apr 11, 2025 | Dec 31, 2024 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 3, 2025 | — |
| 4 | Insider transaction | Apr 3, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Apr 2, 2025 | Apr 1, 2025 |
| 4 | Insider transaction | Mar 14, 2025 | Mar 11, 2025 |
| 4 | Insider transaction | Mar 14, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Mar 14, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Mar 14, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Mar 14, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Mar 14, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Mar 14, 2025 | Mar 13, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 6, 2025 |
| 4 | Insider transaction | Mar 10, 2025 | Mar 6, 2025 |
| 10-K | Annual report | Mar 6, 2025 | Dec 31, 2024 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 8-K |
Current report
Results of operations
|
Feb 26, 2025 | Feb 26, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jan 30, 2025 | — |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 3, 2025 | Jan 1, 2025 |
| 10-Q | Quarterly report | Nov 12, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 12, 2024 | Nov 12, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| 8-K |
Current report
Shareholder vote results
|
Oct 16, 2024 | Oct 16, 2024 |
| DEFA14A | Additional proxy material | Oct 11, 2024 | — |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Oct 1, 2024 | Oct 1, 2024 |
| 4 | Insider transaction | Sep 27, 2024 | Sep 26, 2024 |
| DEFA14A | Additional proxy material | Sep 26, 2024 | — |
| DEFA14A | Additional proxy material | Sep 18, 2024 | — |
| 8-K | Current report | Sep 17, 2024 | Sep 17, 2024 |
| DEFM14A | Filing | Sep 6, 2024 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 4, 2024 | Sep 4, 2024 |
| S-8 | Employee stock plan registration | Aug 9, 2024 | — |
| S-8 POS | Filing | Aug 9, 2024 | — |
| 4 | Insider transaction | Aug 8, 2024 | Aug 8, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 8, 2024 | Aug 7, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 6, 2024 | Aug 6, 2024 |
| 8-K |
Current report
Regulation FD disclosure
|
Aug 5, 2024 | Aug 5, 2024 |
| 10-Q | Quarterly report | Aug 5, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2024 | Aug 5, 2024 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Unregistered share sale, Regulation FD disclosure
|
Aug 2, 2024 | Aug 1, 2024 |
| 8-K | Current report | Aug 2, 2024 | Aug 1, 2024 |
| PREM14A | Filing | Aug 2, 2024 | Aug 2, 2024 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Surety Insurance (SIC 6351)
- Listed as
- OSG (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- New York, NY
- SEC filer status
- Accelerated filer
- SEC CIK
- 874501
- Former names
- AMBAC FINANCIAL GROUP INC (until Nov 10, 2025); AMBAC INC /DE/ (until Jan 2, 1998)
Other Surety Insurance companies
- Old Republic International Corp ORI
- Essent Group Ltd. ESNT
- Mgic Investment Corp MTG
- Radian Group Inc RDN
- NMI Holdings, Inc. NMIH
- Assured Guaranty Ltd AGO
- Mbia Inc MBI
Source: SEC EDGAR filings. This is company-reported data, not investment advice.