# EDGAR Filing Document

**Accession Number:** 0000874501
**File Stem:** 0001628280-26-024072
**Filing Date:** 2026-4
**Character Count:** 8430
**Document Hash:** dfe77ecd7c6ac2c297ec2bb53c0988de
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-024072.hdr.sgml**: 20260407

**ACCESSION NUMBER**: 0001628280-26-024072

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 12

**CONFORMED PERIOD OF REPORT**: 20260401

**ITEM INFORMATION**: Entry into a Material Definitive Agreement

**ITEM INFORMATION**: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260407

**DATE AS OF CHANGE**: 20260407

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** OCTAVE SPECIALTY GROUP INC
- **CENTRAL INDEX KEY:** 0000874501
- **STANDARD INDUSTRIAL CLASSIFICATION:** SURETY INSURANCE [6351]
- **ORGANIZATION NAME:** 02 Finance
- **EIN:** 133621676
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-10777
- **FILM NUMBER:** 26844796

**BUSINESS ADDRESS:**
- **STREET 1:** 40 WALL STREET
- **STREET 2:** 55TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10005
- **BUSINESS PHONE:** 2126587470

**MAIL ADDRESS:**
- **STREET 1:** 40 WALL STREET
- **STREET 2:** 55TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10005

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMBAC FINANCIAL GROUP INC
- **DATE OF NAME CHANGE:** 19980121

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** AMBAC INC /DE/
- **DATE OF NAME CHANGE:** 19930328

?xml version='1.0' encoding='ASCII'? ambc-20260401

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

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| | |
|:---|:---|
| **FORM** | **8-K** |

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**CURRENT REPORT**

**PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934**

**Date of Report (Date of earliest event reported): April 1, 2026**

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| |
|:---|
| Octave Specialty Group, Inc. |
| **(Exact name of Registrant as specified in its charter)** |

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| | | |
|:---|:---|:---|
| **Delaware** | **1-10777** | **13-3621676** |
| **(State of incorporation)** | **(Commission<br>file number)** | **(I.R.S. employer<br>identification no.)** |

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| | | | |
|:---|:---|:---|:---|
| **40 Wall Street** | **New York** | **NY** | **10005** |
| **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Address of principal executive offices)** | **(Address of principal executive offices)** |

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| | |
|:---|:---|
| **(212)** | **658-7470** |
| **(Registrant's telephone number, including area code)** | **(Registrant's telephone number, including area code)** |

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Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the Registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4c))

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| | | |
|:---|:---|:---|
| Securities registered pursuant to Section 12(b) of the Act: | Securities registered pursuant to Section 12(b) of the Act: | Securities registered pursuant to Section 12(b) of the Act: |
| **Title of each class** | **Trading Symbol** | **Name of each exchange on which registered** |
| Common stock, par value $0.01 per share | OSG | New York Stock Exchange |

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Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 under the Securities Act (17 CFR 230.405) or Rule 12b-2 under the Exchange Act (17 CFR 240.12b-2).

Emerging growth company ☐

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| | |
|:---|:---|
| If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to | If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to |
| Section 13(a) of the Exchange Act. | ☐ |

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**Item 1.01. Entry into a Material Definitive Agreement**

***First Amendment to Credit Agreement***

On April 1, 2026, Octave Specialty Group, Inc. (the "Company"), through its wholly owned subsidiaries Octave Partners LLC, a Delaware limited liability company, Cirrata V LLC, a Delaware limited liability company, Cirrata V UK Limited ("Cirrata UK"), a private limited company incorporated in England and Wales with company number 15854655, Cirrata VI, LLC, a Delaware limited liability company, ArmadaCorp Capital, LLC, a Maryland limited liability company, ArmadaCare, LLC, a Maryland limited liability company, and Armada Administrators LLC, a Maryland limited liability company (collectively, the "Borrowers"), together with the other loan parties, entered into the First Amendment to Credit Agreement and Other Loan Documents (the "First Amendment") with the lenders signatory thereto (the "Lenders") and Truist Bank, as administrative agent (in such capacity, the "Administrative Agent"). The First Amendment amends that certain Credit Agreement dated as of October 31, 2025 ("Original Credit Agreement"), by and among the Borrowers, the Lenders party thereto and the Administrative Agent.

The First Amendment provides an additional term loan in an aggregate principal amount of $40,000,000 (the "Additional Term Loan"), which constitutes the same class, type, and tranche as the term loan outstanding under the Original Credit Agreement (the "Existing Term Loan"), and the Additional Term Loan has the same maturity date and interest rate as the Existing Term Loan, and is fully fungible with the Existing Term Loan in all respects. After the First Amendment, the total amount of the outstanding term loans is $139,375,000 as of April 1, 2026. In connection with the First Amendment, the Company pledged its ownership interests in the capital stock of Everspan Holdings, LLC, a Delaware limited liability company.

The proceeds from the Additional Term Loan will be used to, among other things, fund the payment of Cirrata UK's obligation to honor the put rights exercised in March 2026 by certain minority shareholders of Octave Specialty Limited, a private limited company incorporated in England and Wales.

The description of the First Amendment in this report is qualified in its entirety by reference to the full text of the First Amendment, a copy of which will be filed as an exhibit to the Company's Quarterly Report on form 10-Q for the quarter ended June 30, 2026.

**Item 2.03 Creation of a Direct Financial Obligation.**

The disclosure set forth above in Item 1.01 of this Current Report on Form 8-K is incorporated herein by reference.

**Item 9.01. Financial Statements and Exhibits**

(d) Exhibits. The following exhibits are filed as part of this Current Report on Form 8-K

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**EXHIBIT INDEX**

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| | |
|:---|:---|
| **Exhibit<br>Number** | **Exhibit Description** |
| 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 |

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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.

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| | | | |
|:---|:---|:---|:---|
| | | Octave Specialty Group, Inc. | Octave Specialty Group, Inc. |
| | | (Registrant) | (Registrant) |
| Dated: | April 7, 2026 | By: | /s/ Reid Powell |
|  |  |  | Reid Powell |
|  |  |  | Assistant General Counsel |

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