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AMBAC FINANCIAL GROUP INC — Investor Relations & Filings

Ticker · AMBC ISIN · US0231398845 LEI · 5493000UC0RBBNDHI717 US Financial and insurance activities
Filings indexed 1,027 across all filing types
Latest filing 2026-05-29 Regulatory Filings
Country US United States of America
Listing US AMBC

About AMBAC FINANCIAL GROUP INC

https://ambac.com/overview/default.aspx

Octave Specialty Group, formerly Ambac Financial Group, Inc., is a global specialty insurance holding company. The firm builds and acquires innovative Managing General Agent (MGA) businesses operating in the specialty property and casualty insurance markets across the U.S., U.K., and Bermuda. Octave provides its portfolio companies with strategic direction, risk oversight, data and technology solutions, and capital support. The company partners with entrepreneurial leaders to strengthen, scale, and differentiate their businesses in complex and evolving markets, having divested its legacy financial guarantee operations to focus on its specialty insurance platform.

Recent filings

Filing Released Lang Actions
8-K
Regulatory Filings
2026-05-29 English
DEFA14A
Proxy Solicitation & Information Statement
2026-05-14 English
Major Shareholding Notification 2026
Major Shareholding Notification
2026-05-12 English
Major Shareholding Notification 2026
Major Shareholding Notification
2026-05-11 English
10-Q - OCTAVE SPECIALTY GROUP INC (0000874501) (Filer)
Interim / Quarterly Report Q1 2026
2026-05-06 English
8-K - OCTAVE SPECIALTY GROUP INC (0000874501) (Filer)
Regulatory Filings
2026-05-06 English

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