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 |
|---|---|---|---|
| S-8 | Employee stock plan registration | Aug 6, 2026 | — |
| S-8 POS | Filing | Aug 6, 2026 | — |
| S-8 | Employee stock plan registration | Aug 9, 2024 | — |
| S-8 POS | Filing | Aug 9, 2024 | — |
| S-3ASR | Automatic shelf registration | Aug 1, 2024 | — |
| S-8 | Employee stock plan registration | Aug 12, 2020 | — |
| S-8 POS | Filing | Aug 12, 2020 | — |
| S-8 | Employee stock plan registration | May 13, 2014 | — |
| S-3ASR | Automatic shelf registration | May 12, 2014 | — |
| S-8 POS | Post effective amendment no. 1 | Jan 30, 2012 | — |
| S-8 POS | Post-effective amendment no. 1 | Jan 30, 2012 | — |
Showing 11 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
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- Assured Guaranty Ltd AGO
- Mbia Inc MBI
Source: SEC EDGAR filings. This is company-reported data, not investment advice.