Hamilton Insurance Group, Ltd.

Reserve for unpaid losses and loss adjustment expenses

The Company establishes loss reserves using actuarial models, historical insurance industry loss ratio experience and loss development patterns to estimate its ultimate liability of all losses and loss adjustment expenses incurred with respect to premiums earned on the contracts at a given point in time. Loss reserves do not represent an exact calculation of the liability. Estimates of ultimate liabilities are contingent on many future events and the eventual actual outcome of these events may be substantially different from the assumptions underlying the reserve estimates. The Company believes that the recorded reserve for losses and loss adjustment expenses represents management’s best estimate of the cost to settle the ultimate liabilities based on information available at March 31, 2025.

See Note 8, Reserve for Losses and Loss Adjustment Expenses to the audited consolidated financial statements as included in our Form 10-K for the year ended December 31, 2024 for the reconciliation of the gross and net reserve for losses and loss adjustment expenses and for a discussion of prior year reserve development.

Paid and unpaid losses and loss adjustment expenses recoverable

In the normal course of business, the Company seeks to reduce the potential amount of loss arising from claim events by reinsuring certain levels of risk with other reinsurers. See Summary of Critical Accounting Estimates – Ceded reinsurance and unpaid losses and loss adjustment expenses recoverable in our Form 10-K for the year ended December 31, 2024 for a detailed discussion of the Company’s risks related to ceded reinsurance agreements and the Company’s process to evaluate the financial condition of its reinsurers.

See Summary of Critical Accounting Estimates — Reserve for Losses and Loss Adjustment Expenses in our Form 10-K for the year ended December 31, 2024 for a detailed discussion of losses and loss adjustment expenses.