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OCTAVE SPECIALTY GROUP INC

For the period ended Dec 31, 2025. Filed Mar 4, 2026.

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About this filing

A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 4, 2026

OSG$4.99-2.9%Stored close · as of Nov 6, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Contents

Schedule I—Summary of Investments

SCHEDULE I

Summary of Investments

Other Than Investments in Related Parties

December 31, 2025

Type of Investment($ in thousands)CostEstimatedFair ValueAmount at WhichShown in theBalance Sheet
Municipal obligations$11,697$11,590$11,590
Corporate obligations67,88166,57366,573
U.S. government obligations35,19035,42435,424
Residential mortgage-backed securities1,6041,5971,597
Commercial mortgage-backed securities3,3073,3413,341
Collateralized debt obligations1,9631,9751,975
Other asset-backed securities1,7721,7951,795
Short-term146,434146,442146,442
Other (1)—7,45424,971
Total$269,848$276,191$293,708

(1) Excluded from the estimated fair value amount are equity securities with a carrying value of $17,517 as of December 31, 2025, that do not have readily determinable fair values and are carried on the balance sheet at cost, less impairment, and adjusted to fair value when observable price changes in identical or similar investments from the same issuer occur, as permitted under the Investments — Equity Securities Topic of the ASC.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.