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 |
|---|---|---|---|
| ARS | Annual report to shareholders | Apr 10, 2026 | Dec 31, 2025 |
| 10-K | Annual report | Mar 4, 2026 | Dec 31, 2025 |
| ARS | Annual report to shareholders | Apr 11, 2025 | Dec 31, 2024 |
| 10-K | Annual report | Mar 6, 2025 | Dec 31, 2024 |
| ARS | Annual report to shareholders | Apr 26, 2024 | Dec 31, 2023 |
| 10-K | Annual report | Feb 27, 2024 | Dec 31, 2023 |
| ARS | Annual report to shareholders | Apr 28, 2023 | Dec 31, 2022 |
| 10-K | Annual report | Mar 1, 2023 | Dec 31, 2022 |
| 10-K | Annual report | Feb 24, 2022 | Dec 31, 2021 |
| 10-K | Annual report | Mar 1, 2021 | Dec 31, 2020 |
| 10-K | Annual report | Mar 2, 2020 | Dec 31, 2019 |
| 10-K | Annual report | Feb 28, 2019 | Dec 31, 2018 |
| 10-K | Annual report | Feb 28, 2018 | Dec 31, 2017 |
| 10-K | Annual report | Feb 28, 2017 | Dec 31, 2016 |
| 10-K/A | Amended annual report | May 11, 2016 | Dec 31, 2015 |
| 10-K | Annual report | Feb 29, 2016 | Dec 31, 2015 |
| ARS | Annual report to shareholders | Apr 7, 2015 | Dec 31, 2014 |
| 10-K | Annual report | Mar 2, 2015 | Dec 31, 2014 |
| ARS | Annual report to shareholders | Apr 14, 2014 | Dec 31, 2013 |
| 10-K | Annual report | Mar 3, 2014 | Dec 31, 2013 |
| 10-K | Annual report | Mar 22, 2013 | Dec 31, 2012 |
| 10-K | Annual report | Mar 22, 2012 | Dec 31, 2011 |
| 10-K/A | Amended annual report | May 2, 2011 | Dec 31, 2010 |
| 10-K | Annual report | Mar 16, 2011 | Dec 31, 2010 |
Showing 24 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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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.