OSG

Octave Specialty Group, Inc.

A specialty property-and-casualty insurer, it pairs a distribution arm that places premiums across niche insurance lines with Everspan, a program carrier that works with managing general agents and is rated A- by A.M. Best. It began in 1971 as the American Municipal Bond Assurance Corporation (Ambac), a bond insurer that survived the 2008 crisis, then rebranded as Octave in 2025 after selling its legacy financial guarantee business. Its name borrows the musical octave, chosen to suggest distinct businesses working together in harmony.

CUSIP: 023139884FinancialsUS1 holder

Ownership Activity Financials Filings

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Results of Operations and Financial Condition

Submission of Matters to a Vote of Security Holders

Results of Operations and Financial Condition

Entry into a Material Definitive Agreement

Results of Operations and Financial Condition

Financial Statements and Exhibits

Changes in Registrant's Certifying Accountant

Results of Operations and Financial Condition