GREENLIGHT CAPITAL RE LTD

Management uses certain key financial measures, some of which are not prescribed under U.S. GAAP rules and standards (“non-GAAP financial measures”), to evaluate our financial performance, financial position, and the change in shareholder value. Generally, a non-GAAP financial measure, as defined in SEC Regulation G, is a numerical measure of a company’s historical or future financial performance, financial position, or cash flows that either excludes or includes amounts that are not normally excluded or included in the most directly comparable measure calculated and presented under U.S. GAAP. We believe that these measures, which may be calculated or defined differently by other companies, provide consistent and comparable metrics of our business performance to help shareholders understand performance trends and facilitate a more thorough understanding of the Company’s business. Non-GAAP financial measures should not be viewed as substitutes for those determined under U.S. GAAP.

The key non-GAAP financial measures used in this Annual Report are:

•Fully diluted book value per share; and

•Net underwriting income (loss).

These non-GAAP financial measures are described below.

Fully Diluted Book Value Per Share

Our primary financial goal is to increase fully diluted book value per share over the long term. We use fully diluted book value as a financial measure in our incentive compensation plan.

We believe that long-term growth in fully diluted book value per share is the most relevant measure of our financial performance because it provides management and investors a yardstick to monitor the shareholder value generated. Fully diluted book value per share may also help our investors, shareholders, and other interested parties form a basis of comparison with other companies within the property and casualty reinsurance industry. Fully diluted book value per share should not be viewed as a substitute for the most comparable U.S. GAAP measure, which in our view is the basic book value per share.

We calculate basic book value per share as (a) ending shareholders' equity, divided by (b) the total ordinary shares issued and outstanding, as reported in the consolidated financial statements. In prior years, we calculated the basic book value per share by modifying the denominator to exclude unearned performance-based restricted shares granted after December 31, 2021. We have revised this calculation in 2023 to eliminate the basic book value per share non-GAAP financial measure and have restated the 2022 comparative basic book value per share in the table below and elsewhere in this Annual Report to conform with the current presentation.

Fully diluted book value per share represents basic book value per share combined with any dilutive impact of in-the-money stock options and all outstanding restricted stock units “RSUs”. We believe these adjustments better reflect the ultimate dilution to our shareholders.

The following table presents a reconciliation of the fully diluted book value per share to basic book value per share (the most directly comparable U.S. GAAP financial measure):

Net Underwriting Income (Loss)

One way that we evaluate the Company’s underwriting performance is by measuring net underwriting income (loss). We do not use premiums written as a measure of performance. Net underwriting income (loss) is a performance measure used by management to evaluate the fundamentals underlying the Company’s underwriting operations. We believe that the use of net underwriting income (loss) enables investors and other users of the Company’s financial information to analyze our performance in a manner similar to how management analyzes performance. Management also believes this measure follows industry practice and allows the users of financial information to compare the Company’s performance with that of our industry peer group.

Net underwriting income (loss) is considered a non-GAAP financial measure because it excludes items used to calculate net income before taxes under U.S. GAAP. We calculate net underwriting income (loss) as net premiums earned less net loss and loss adjustment expenses, acquisition costs, underwriting expenses (including related G&A expenses), and deposit interest expense. The measure excludes, on a recurring basis: (1) investment income (loss); (2) other income (expense) not related to underwriting, including foreign exchange gains or losses, and Lloyd’s interest income and expense; (3) corporate G&A expenses; and (4) interest expense. We exclude total investment income or loss, foreign exchange gains or losses, and Lloyd’s interest income or expense as we believe these items are influenced by market conditions and other factors unrelated to underwriting decisions. Additionally, we exclude corporate G&A and interest expenses because these costs are generally fixed and not incremental to or directly related to our underwriting operations. We believe all of these amounts are largely independent of our underwriting process, and including them could hinder the analysis of trends in our underwriting operations. Net underwriting income (loss) should not be viewed as a substitute for U.S. GAAP net income before income taxes.

The reconciliations of net underwriting income (loss) to income (loss) before income taxes (the most directly comparable U.S. GAAP financial measure) on a consolidated basis are shown below: