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 |
|---|---|---|---|
| 25-NSE | Delisting notice | Apr 28, 2023 | — |
| 25 | Filing | Feb 3, 2020 | — |
| 25 | Filing | Feb 3, 2020 | — |
| CERT | Nyse certification | Jan 30, 2020 | — |
| 8-A12B | Filing | Jan 30, 2020 | — |
| DEFR14A | Defa14a | Apr 29, 2019 | — |
| UPLOAD | Letter from the SEC | Feb 21, 2017 | — |
| CORRESP | Letter to the SEC | Feb 21, 2017 | — |
| CORRESP | Letter to the SEC | Jan 27, 2017 | — |
| CORRESP | Letter to the SEC | Jan 6, 2017 | — |
| UPLOAD | Letter from the SEC | Dec 28, 2016 | — |
| NO ACT | Auto-generated paper document | Dec 15, 2016 | Nov 29, 2016 |
| DFAN14A | Ambac financial group, inc. | May 13, 2016 | — |
| NT 10-Q | Filing | May 11, 2016 | Mar 31, 2016 |
| DFAN14A | Canyon capital advisors llc | May 3, 2016 | — |
| UPLOAD | Letter from the SEC | Apr 29, 2016 | — |
| DFAN14A | Canyon capital advisors llc | Apr 29, 2016 | — |
| UPLOAD | Letter from the SEC | Apr 28, 2016 | — |
| DFAN14A | Canyon capital advisors llc | Apr 25, 2016 | — |
| DEFC14A | Canyon capital advisors llc | Apr 25, 2016 | — |
| PRRN14A | Filing | Apr 22, 2016 | — |
| PRRN14A | Ambac financial group, inc. | Apr 21, 2016 | — |
| DEFC14A | Filing | Apr 21, 2016 | — |
| CORRESP | Letter to the SEC | Apr 19, 2016 | — |
| PREC14A | Filing | Apr 19, 2016 | — |
| PREC14A | Filing | Apr 18, 2016 | — |
| PRRN14A | Canyon capital advisors llc | Apr 15, 2016 | — |
| PREC14A | Filing | Apr 15, 2016 | — |
| DFAN14A | Ambac financial group, inc. | Apr 14, 2016 | — |
| UPLOAD | Letter from the SEC | Apr 14, 2016 | — |
| DFAN14A | Ambac financial group, inc. | Apr 14, 2016 | — |
| PREC14A | Filing | Apr 13, 2016 | — |
| CORRESP | Letter to the SEC | Apr 13, 2016 | — |
| UPLOAD | Letter from the SEC | Apr 12, 2016 | — |
| DFAN14A | Canyon capital advisors llc | Apr 8, 2016 | — |
| PREC14A | Canyon capital advisors llc | Apr 8, 2016 | — |
| PREC14A | Filing | Mar 30, 2016 | — |
| DFAN14A | Ambac financial group, inc. | Mar 28, 2016 | — |
| DFAN14A | Ambac financial group, inc. | Mar 14, 2016 | — |
| DFAN14A | Ambac financial group, inc. | Mar 9, 2016 | — |
| UPLOAD | Letter from the SEC | Jan 3, 2014 | — |
| CORRESP | Letter to the SEC | Dec 5, 2013 | — |
| UPLOAD | Letter from the SEC | Nov 21, 2013 | — |
| CERTNAS | Auto-generated paper document | May 1, 2013 | — |
| 8-A12B | Form 8-a12b | May 1, 2013 | — |
| 15-12B | Deregistration | Jan 30, 2012 | — |
| 11-K | Employee savings plan report | Jul 14, 2011 | Dec 31, 2010 |
| NT 11-K | Form 12b-25 - notification of late filing | Jun 30, 2011 | Dec 31, 2010 |
| UPLOAD | Letter from the SEC | Feb 8, 2011 | — |
| UPLOAD | Letter from the SEC | Feb 8, 2011 | — |
| 25-NSE | Delisting notice | Dec 17, 2010 | — |
| 25-NSE | Delisting notice | Dec 17, 2010 | — |
| 25-NSE | Delisting notice | Dec 17, 2010 | — |
| 25-NSE | Delisting notice | Dec 17, 2010 | — |
| CORRESP | Letter to the SEC | Dec 3, 2010 | — |
| CORRESP | Letter to the SEC | Nov 17, 2010 | — |
| NT 10-Q | Notification of late filing | Nov 10, 2010 | Sep 30, 2010 |
| CORRESP | Letter to the SEC | Nov 5, 2010 | — |
| CORRESP | Letter to the SEC | Nov 5, 2010 | — |
| UPLOAD | Letter from the SEC | Oct 22, 2010 | — |
| UPLOAD | Letter from the SEC | Oct 13, 2010 | — |
Showing 61 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.