James River Group Holdings, Inc.

On November 7, 2025, we completed a domestication resulting in our holding company, James River Group Holdings, Ltd., changing its jurisdiction of incorporation from Bermuda to Delaware and changing its name to James River Group Holdings, Inc. (the "Domestication"). This Annual Report on Form 10-K includes the results of James River Group Holdings, Ltd. prior to the Domestication and James River Group Holdings, Inc. following the Domestication.

Unless the context indicates or suggests otherwise, references in this Annual Report on Form 10-K to “the Company,” “we,” “us” and “our” refer to (i) James River Group Holdings, Inc. and its consolidated subsidiaries following the Domestication and (ii) James River Group Holdings, Ltd. and its consolidated subsidiaries prior to the Domestication.

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K (“Annual Report”) contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These statements may be identified by the fact that they do not relate strictly to historical or current facts. You may identify forward-looking statements in this Annual Report by the use of words such as “anticipates,” “estimates,” “expects,” “intends,” “plans,” “seeks” and “believes,” and similar expressions or future or conditional verbs such as “will,” “should,” “would,” “may” and “could.” These forward-looking statements include, among others, all statements relating to our future financial performance, our business prospects and strategy, anticipated financial position and financial strength ratings, liquidity and capital needs and other similar matters. These forward-looking statements are based on management’s current expectations and assumptions about future events, which are inherently subject to uncertainties, risks and changes in circumstances that are difficult to predict.

Our actual results may differ materially from those expressed in, or implied by, the forward-looking statements included in this Annual Report as a result of various factors, many of which are beyond our control, including, among others:

• the inherent uncertainty of estimating loss and loss adjustment expense reserves and the possibility that incurred losses and loss adjustment expenses may be greater than our estimate used to compute loss and loss adjustment expense reserves included in the financial statements;

• inaccurate estimates and judgments in our risk management may expose us to greater risks than intended;

• downgrades in the financial strength rating or outlook of our regulated insurance subsidiaries impacting our competitive position and ability to attract and retain insurance business that our subsidiaries write and ultimately our financial condition and triggering a default on our credit facility;

• the potential loss of key members of our management team or key employees, and our ability to attract and retain personnel;

• adverse economic and competitive factors resulting in the sale of fewer policies than expected or an increase in the frequency or severity of claims, or both;

• the impact of a higher than expected inflationary environment on our reserves, loss adjustment expenses, the values of our investments and investment returns, and our compensation expenses;

• exposure to credit risk, interest rate risk and other market risk in our investment portfolio and our reinsurers;

• reliance on a select group of brokers and agents for a significant portion of our business and the impact of our potential failure to maintain such relationships;

• reliance on a select group of customers for a significant portion of our business and the impact of our potential failure to maintain, or decision to terminate, such relationships;

• our ability to obtain insurance and reinsurance coverage at prices and on terms that allow us to transfer risk, adequately protect our Company against financial loss and that supports our growth plans;

• losses resulting from reinsurance counterparties failing to pay us on reinsurance claims, insurance companies with whom we have a fronting arrangement failing to pay us for claims, or a former customer with whom we have an indemnification arrangement failing to perform its reimbursement obligations, and our potential inability to demand or maintain adequate collateral to mitigate such risks;

• the inherent uncertainty of estimating reinsurance recoverable on unpaid losses and the possibility that reinsurance may be less than our estimate of reinsurance recoverable on unpaid losses;

• inadequacy of premiums we charge to compensate us for our losses incurred;

• changes in laws or government regulation, including tax or insurance laws and regulations;

• changes in U.S. tax laws (including associated regulations) and the interpretation of certain provisions applicable to insurance/reinsurance businesses with U.S. and non-U.S. operations, which may be retroactive and could have a significant effect on us including, among other things, by potentially increasing our tax rate, as well as on our shareholders;

• a failure of any of the loss limitations or exclusions we utilize in our insurance products to shield us from unanticipated financial losses or legal exposures, or other liabilities;

• losses from catastrophic events, such as natural disasters and terrorist acts, which substantially exceed our expectations and/or exceed the amount of reinsurance we have purchased to protect us from such events;

• potential effects on our business of emerging claim and coverage issues;

• the potential impact of internal or external fraud, operational errors, systems malfunctions or cyber security incidents;

• our ability to manage our growth effectively;

• failure to maintain effective internal controls in accordance with the Sarbanes-Oxley Act of 2002, as amended;

• changes in our financial condition, regulations or other factors that may restrict our subsidiaries’ ability to pay us dividends;

• an adverse result in any litigation or legal proceedings we are or may become subject to;

• inability to generate taxable income and execute tax planning strategies which could adversely impact our ability to recognize deferred tax assets at the level reflected on our balance sheet; and

• other risks and uncertainties discussed under “Risk Factors” and elsewhere in this Annual Report.

Accordingly, you should read this Annual Report completely and with the understanding that our actual future results may be materially different from information contained in the forward-looking statements.

Additional information about these risks and uncertainties, as well as others that may cause actual results to differ materially from those in the forward-looking statements, is contained in Part I, Item 1A “Risk Factors” in this Annual Report, and our filings with the U.S. Securities and Exchange Commission (“SEC”).

Forward-looking statements speak only as of the date of this Annual Report. Except as expressly required under federal securities laws and the rules and regulations of the SEC, we do not have any obligation, and do not undertake, to update any forward-looking statements to reflect events or circumstances arising after the date of this Annual Report, whether as a result of new information or future events or otherwise. You should not place undue reliance on the forward-looking statements included in this Annual Report or that may be made elsewhere from time to time by us, or on our behalf. All forward-looking statements attributable to us are expressly qualified by these cautionary statements.