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 |
|---|---|---|---|
| DEFA14A | Additional proxy material | May 14, 2026 | — |
| DEFA14A | Additional proxy material | Apr 10, 2026 | — |
| DEF 14A | Proxy statement | Apr 10, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 11, 2025 | — |
| DEF 14A | Proxy statement | Apr 11, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Oct 11, 2024 | — |
| DEFA14A | Additional proxy material | Sep 26, 2024 | — |
| DEFA14A | Additional proxy material | Sep 18, 2024 | — |
| DEFM14A | Filing | Sep 6, 2024 | — |
| PREM14A | Filing | Aug 2, 2024 | Aug 2, 2024 |
| DEF 14A | Proxy statement | Apr 26, 2024 | Dec 31, 2023 |
| PRE 14A | Preliminary proxy statement | Apr 8, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Jun 16, 2023 | — |
| DEF 14A | Proxy statement | Apr 28, 2023 | — |
| DEF 14A | Proxy statement | Apr 15, 2022 | Dec 31, 2021 |
| DEF 14A | Proxy statement | Apr 15, 2021 | Dec 31, 2020 |
| DEFA14A | Additional proxy material | May 12, 2020 | — |
| DEF 14A | Proxy statement | Apr 15, 2020 | Apr 15, 2020 |
| DEF 14A | Proxy statement | Apr 18, 2019 | Dec 31, 2018 |
| DEF 14A | Proxy statement | Apr 5, 2018 | Dec 31, 2017 |
| DEF 14A | Proxy statement | Apr 7, 2017 | Dec 31, 2016 |
| DEFA14A | Additional proxy material | May 16, 2016 | — |
| DEFA14A | Additional proxy material | May 13, 2016 | — |
| DEFA14A | Additional proxy material | May 12, 2016 | — |
| DEFA14A | Additional proxy material | May 11, 2016 | — |
| DEFA14A | Additional proxy material | May 11, 2016 | — |
| DEFA14A | Additional proxy material | May 11, 2016 | — |
| DEFA14A | Additional proxy material | May 11, 2016 | — |
| DEFA14A | Additional proxy material | May 9, 2016 | — |
| DEFA14A | Additional proxy material | May 5, 2016 | — |
| DEFA14A | Additional proxy material | May 5, 2016 | — |
| DEFA14A | Additional proxy material | May 5, 2016 | — |
| DEFA14A | Additional proxy material | Apr 29, 2016 | — |
| DEFA14A | Additional proxy material | Apr 29, 2016 | — |
| DEFA14A | Additional proxy material | Apr 29, 2016 | — |
| DEFA14A | Additional proxy material | Apr 20, 2016 | — |
| DEF 14A | Proxy statement | Apr 20, 2016 | Dec 31, 2015 |
| DEFA14A | Additional proxy material | Apr 18, 2016 | — |
| DEFA14A | Additional proxy material | Apr 18, 2016 | — |
| DEFA14A | Additional proxy material | Apr 18, 2016 | — |
| DEFA14A | Additional proxy material | Apr 12, 2016 | — |
| DEFA14A | Additional proxy material | Apr 5, 2016 | — |
| DEFA14A | Additional proxy material | Apr 1, 2016 | — |
| DEFA14A | Additional proxy material | Mar 29, 2016 | — |
| DEFA14A | Additional proxy material | Mar 14, 2016 | — |
| DEFA14A | Additional proxy material | Mar 14, 2016 | — |
| DEFA14A | Additional proxy material | Mar 14, 2016 | — |
| DEF 14A | Proxy statement | Mar 10, 2016 | Mar 9, 2016 |
| DEF 14A | Proxy statement | Apr 3, 2015 | Apr 3, 2015 |
| DEF 14A | Proxy statement | Apr 10, 2014 | Apr 10, 2014 |
| DEF 14A | Proxy statement | Nov 8, 2013 | Dec 18, 2013 |
Showing 51 filings. 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.