Ambac Financial Group Inc 8-K Filing

Ticker: OSG · Form: 8-K · Filed: Nov 10, 2025 · CIK: 874501

Ambac Financial Group Inc 8-K Filing Summary
FieldDetail
CompanyAmbac Financial Group Inc (OSG)
Form Type8-K
Filed DateNov 10, 2025
Pages2
Reading Time2 min
Key Dollar Amounts$0.01
Sentimentneutral

Sentiment: neutral

FAQ

What type of filing is this?

This is a 8-K filing submitted by Ambac Financial Group Inc (ticker: OSG) to the SEC on Nov 10, 2025.

What are the key financial figures in this filing?

Key dollar amounts include: $0.01 (ich registered Common stock, par value $0.01 per share AMBC New York Stock Exchange).

How long is this filing?

Ambac Financial Group Inc's 8-K filing is 2 pages with approximately 604 words. Estimated reading time is 2 minutes.

Where can I view the full 8-K filing?

The complete filing is available on SEC EDGAR. You can also read the AI-decoded analysis with risk assessment and key highlights on ReadTheFiling.

Filing Stats: 604 words · 2 min read · ~2 pages · Grade level 9.7 · Accepted 2025-11-10 17:20:18

Key Financial Figures

  • $0.01 — ich registered Common stock, par value $0.01 per share AMBC New York Stock Exchange

Filing Documents

03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year

Item 5.03. Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year On November 10, 2025, the Company filed with the Secretary of State of the State of Delaware a certificate of amendment to its certificate of incorporation, changing the Company's name to "Octave Specialty Group, Inc." (the "Name Change"). A copy of the Amended and Restated Certificate of Incorporation is filed as Exhibit 3.1 hereto, which is incorporated by reference into this Item 5.03. In connection with the Name Change, the bylaws of the Company were amended and restated in their entirety to reflect the Name Change. A copy of the Amended and Restated Bylaws is filed as Exhibit 3.2 hereto, which is incorporated by reference into this Item 5.03.

01. Financial Statements and Exhibits

Item 9.01. Financial Statements and Exhibits (d) Exhibits. The following exhibits are filed as part of this Current Report on Form 8-K EXHIBIT INDEX Exhibit Number Exhibit Description 3.1 Amended and Restated Certificate of Incorporation of Octave Specialty Group, Inc. 3.2 Amended and Restated Bylaws of Octave Specialty Group, Inc. 99.1 Press Release dated November 10, 2025 101.INS XBRL Instance Document - the instance document does not appear in the interactive Data File because its XBRL tags are embedded within the Inline XBRL document. 101.SCH XBRL Taxonomy Extension Schema Document. 101.CAL XBRL Taxonomy Extension Calculation Linkbase Document. 101.LAB XBRL Taxonomy Extension Label Linkbase Document. 101.PRE XBRL Taxonomy Extension Presentation Linkbase Document. 101.DEF XBRL Taxonomy Extension Definition Linkbase Document. 104 Cover Page Interactive Data File - The cover page interactive data file does not appear in the Interactive Data File because its XBRL tags or embedded within the Inline XBRL document

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Ambac Financial Group, Inc. (Registrant) Dated: November 10, 2025 By: /s/ William J. White William J. White First Vice President, Secretary and Assistant General Counsel 1

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