Business Context and Reporting Period
This Form 8-K Current Report was filed on November 10, 2025, by Ambac Financial Group, Inc. (Delaware). The filing documents a corporate name change to Octave Specialty Group, Inc. effective as of the filing date. The company's principal executive offices remain at One World Trade Center, New York, NY.
Financial Metrics
This filing is a current report regarding a corporate governance change and does not contain financial statements. Consequently, there are no reported values for revenue, profit, cash flow, margins, debt, or liquidity in this document.
Material Changes
- Corporate Name: The registrant changed its name from "Ambac Financial Group, Inc." to "Octave Specialty Group, Inc."
- Governance Documents: The Company filed a certificate of amendment to its Certificate of Incorporation and amended and restated its Bylaws to reflect the new name.
Guidance, Outlook, and Risks
The filing does not provide management commentary, financial guidance, outlook, or specific risk factors related to the name change. The document references a press release (Exhibit 99.1) for additional context, but the text of the press release is not included in the provided input.
Key Facts for Investor Verification
- Verify the effective date of the name change and any associated ticker symbol updates on the New York Stock Exchange (currently listed as AMBC).
- Review the attached Amended and Restated Certificate of Incorporation (Exhibit 3.1) and Bylaws (Exhibit 3.2) for any provisions beyond the name change.
- Consult the referenced Press Release (Exhibit 99.1) for strategic rationale behind the rebranding.
- Confirm that no other material events were disclosed in this specific 8-K filing.