Exhibit 99.1 JAMES RIVER ANNOUNCES FIRST QUARTER 2025 RESULTS Pembroke, Bermuda, May 5, 2025 - James River Group Holdings, Ltd. ("James River" or the "Company") (NASDAQ: JRVR) reported net income from continuing operations available to common shareholders of $9.0 million ($0.18 per diluted share) and adjusted net operating income of $9.1 million ($0.19 per diluted share) for the first quarter of 2025. 1 | | Three Months Ended | | | | Three Months Ended | | | | | --- | --- | --- | --- | --- | --- | --- | --- ...

Richard Schmitzer to Retire as President and Chief Executive Officer, Excess and Surplus Lines; Todd Sutherland Will Succeed Him as President, Excess and Surplus Lines, Effective May 5, 2025PEMBROKE, Bermuda, May 05, 2025 (GLOBE NEWSWIRE) -- James River Group Holdings, Ltd. ("James River" or the "Company") (NASDAQ: JRVR) announced today its plans for Todd Sutherland, current Senior Vice President, Management Liability within the Company’s Excess and Surplus Lines (“E&S”) segment, to succeed Richard Schmitze ...

PEMBROKE, Bermuda, May 05, 2025 (GLOBE NEWSWIRE) -- James River Group Holdings, Ltd. ("James River" or the "Company") (NASDAQ: JRVR) reported net income from continuing operations available to common shareholders of $9.0 million ($0.18 per diluted share) and adjusted net operating income1 of $9.1 million ($0.19 per diluted share) for the first quarter of 2025. Three Months EndedMarch 31, Three Months EndedMarch 31,($ in thousands, except for share data) 2025 per diluted share 2024 per dilutedshareNet in ...

Group 1 - James River Group Holdings, Ltd. will release its first quarter 2025 earnings on May 5, 2025, after market close [1] - An earnings conference call is scheduled for May 6, 2025, at 8:00 a.m. Eastern Time, accessible via phone or the investor website [1] - The company operates as a Bermuda-based insurance holding company with a focus on specialty insurance [2] Group 2 - James River Group Holdings, Ltd. owns and operates a group of specialty insurance companies in two segments: Excess and Surplus Lines and Specialty Admitted Insurance [2] - All of the company's regulated insurance subsidiaries are rated "A-" (Excellent) by A.M. Best Company [2]

PEMBROKE, Bermuda, April 16, 2025 (GLOBE NEWSWIRE) -- James River Group Holdings, Ltd. (“James River” or the “Company”) (NASDAQ: JRVR) today announced that Bob Zimardo has been appointed Senior Vice President, Investments and Investor Relations, effective April 16, 2025. He will report directly to Sarah Doran, Chief Financial Officer of the Company. As Senior Vice President, Investments and Investor Relations, Mr. Zimardo will be responsible for investments and investor relations activity. He brings over 2 ...

Market and Industry Data This presentation includes market and industry data, forecasts and projections. We have obtained certain market and industry data from publicly available industry publications. These sources generally state that the information they provide has been obtained from sources believed to be reliable, but that the accuracy and completeness of the information are not guaranteed. The forecasts and projections are based on historical market data, and there is no assurance that any of the for ...

Core Viewpoint - The shareholders of James River Group Holdings, Ltd. express strong discontent regarding the Board's decision to increase cash incentive awards for management despite the company's significant underperformance, including a 59% decline in share price and a 30% drop in book value over the past year [2][3]. Group 1: Shareholder Concerns - Shareholders, holding nearly 2% of the company's outstanding shares, are shocked by the Board's announcement of discretionary bonuses totaling approximately $2,115,000 for the 2024 performance period [2][3]. - The shareholders argue that bonuses should only be granted for outperformance and excellence, which they believe is absent given the company's declining stock price and book value [3][4]. Group 2: Financial Performance and Dividend Policy - In 2024, the company reduced its annual cash dividend from $0.20 per share to $0.05 per share to improve its financial situation, raising concerns about the appropriateness of management bonuses equating to the reduced dividend [4]. - The shareholders emphasize that management should prioritize maximizing shareholder value rather than enriching themselves at the shareholders' expense, especially in light of the company's poor performance [4][5]. Group 3: Board Accountability - The majority of the Board owns less than 0.5% of the company's outstanding shares, with most shares received as compensation rather than purchased, leading to questions about their incentive to improve company performance [5]. - The shareholders request an explanation from the Board regarding their decision to reward management despite the company's underperformance and suggest that any bonuses should be in the form of incentive stock options tied to performance metrics [6][7]. Group 4: Future Actions - The shareholders expect a prompt response from the Board and a commitment to prioritize capital preservation, indicating readiness to take further steps to hold the Board accountable [8].

Group 1 - The company James River (NASDAQ: JRVR) has seen a significant decline of 50% since the last buy recommendation, indicating a potential overreaction by the market despite the tangible book value remaining stable [1] - Management is actively seeking to offload assets, which may signal a strategic shift or an attempt to improve financial stability [1] - The investor expresses a focus on emerging markets and values a contrarian investment approach, suggesting a willingness to invest in companies with high uncertainty but low risk [1] Group 2 - The investor holds a beneficial long position in JRVR shares, indicating confidence in the company's future despite current market conditions [2] - The article reflects the author's personal opinions and is not influenced by external compensation, emphasizing an independent analysis [2] - The investor's economic thinking is influenced by notable economists, suggesting a potential shift towards an Austrian economic perspective in future analyses [1]

Financial Data and Key Metrics Changes - The company reported an adjusted net operating loss of $40.8 million or $0.99 per share for Q4 2024, and a net loss from continuing operations of $92.7 million or $2.25 per share, largely due to two significant items announced in November [22][23] - The investment portfolio generated $93.1 million of net investment income from continuing operations, a 10.8% increase over 2023 [8] - The accident year combined ratio for the E&S segment was 91.8%, which would have been 89.3% excluding legacy structure purchases [11][25] Business Line Data and Key Metrics Changes - The E&S business grew by 2% in Q4, but excluding the excess casualty unit, growth would have been 11.2% across the remaining 14 underwriting divisions [14] - The Specialty Admitted segment generated a combined ratio of 95.3% for Q4 and 92.2% for the full year, with underwriting profit growth of 68.6% over the prior year [18][19] Market Data and Key Metrics Changes - Submission growth reached 9% for the quarter, with record highs in new and renewal submissions for the last four years [9][40] - The company experienced a positive renewal rate change of 9% in 2024, reflecting strong market momentum [12] Company Strategy and Development Direction - The company completed the divestiture of its Bermuda reinsurance operation and executed several transactions to focus on its insurance business [7] - A planned redomestication and improvements in technology and processes are expected to enhance organizational efficiency [9] Management's Comments on Operating Environment and Future Outlook - Management expressed cautious optimism about profitability in 2024, while monitoring loss emergence as the accident year seasons [17] - The company anticipates a mid-teen operating return on tangible common equity for 2025, supported by a similar accident year loss ratio to 2024 [28] Other Important Information - The company did not experience any net losses due to California wildfires and maintains a conservative property stance [34] - The company acknowledged the retirement of Ollie Sherman from the Board and the election of Christine LaSala as the new Non-Executive Chairperson [49] Q&A Session Summary Question: What is the trend looking like for submission growth in 2025? - Management noted an increase in submissions and healthy growth across several divisions, with a reported 9% submission growth for the quarter [40][42] Question: Can you provide insights on the loss picks and trends? - Management indicated a slight increase in loss picks, primarily driven by excess casualty and general casualty, but overall loss trends remain in the low single-digit range [44]

Customer Concentration - The company's largest customer accounted for approximately $175.7 million (12.3%) of consolidated gross written premium from continuing operations in 2024, up from $163.1 million (10.8%) in 2023[216]. - The Excess and Surplus Lines segment conducted business with three brokers that produced an aggregate of $724.7 million in gross written premiums, representing 71.3% of that segment's gross written premiums for the year[213]. - The Specialty Admitted Insurance segment conducted business with two agencies that produced $239.5 million in gross written premiums, representing 57.7% of that segment's gross written premiums for the year[213]. Reinsurance and Credit Risk - Reinsurance recoverables on unpaid losses from the three largest reinsurers amounted to $980.6 million, representing 49.1% of the total balance[222]. - Prepaid reinsurance premiums ceded to three reinsurers totaled $108.5 million, or 36.6% of the total balance of prepaid reinsurance premiums[222]. - The company is exposed to credit risk with regard to reinsurance counterparties, which could materially adversely affect financial condition if premiums are not collected[215]. - The company is exposed to credit risk related to insurance contracts previously issued to Rasier, which could materially affect its financial condition if reimbursement obligations are not met[225]. Economic and Market Conditions - Adverse economic factors, including inflation and recession, could lead to fewer policy sales and increased claims, negatively impacting growth and profitability[208]. - The company may face challenges in obtaining reinsurance coverage at reasonable prices, which is critical for managing exposure and reducing volatility in results[219]. - The company has experienced a trend toward consolidation among brokers and agents, which may lead to higher commission expenses and reduced underwriting profit[212]. Investment Performance - The company experienced unrealized losses on fixed maturity investments of $193.0 million for the year ended December 31, 2022, but recognized unrealized gains of $99.3 million for the year ended December 31, 2023[241]. - As of December 31, 2024, the fair value of the company's investments in bank loans was $142.4 million, representing 7.4% of the carrying value of cash and invested assets[244]. - The company holds equity investments of $7.7 million in non-public limited liability companies focused on renewable energy, anticipating attractive risk-adjusted returns[245]. - The investment portfolio includes interests in limited partnerships and privately held debt investments totaling $29.0 million as of December 31, 2024[246]. - The company’s investment portfolio is subject to significant market and credit risks, which could adversely impact its financial condition[239]. Regulatory Environment - The company may face increased government and market regulation, which could materially adversely impact its business operations[249]. - Changes in Bermuda law and regulation could impose tax liabilities or increase regulatory supervision, affecting the company's operations[250]. - The company is subject to extensive regulation by state insurance departments, which may impose constraints that could adversely affect its business objectives[255]. - The NAIC has developed a risk-based capital (RBC) system that many states have adopted, requiring insurers to maintain adequate capital levels to support operations[259]. Catastrophic Events and Natural Disasters - The company faces risks from unpredictable natural disasters and catastrophic events, which can lead to increased claims and volatility in results[233]. - The company incurred $5.0 million in net catastrophe losses related to Hurricane Ian for the third quarter ending September 30, 2022[235]. - Changes in climate conditions may increase the frequency and severity of catastrophic events, adversely affecting the company's financial condition[262]. Capital and Liquidity - The company raised $192.1 million in equity capital in May 2021 to protect its balance sheet after experiencing $170.0 million of adverse development in its commercial auto business[272]. - On March 1, 2022, the company issued 150,000 Series A Preferred Shares for an aggregate purchase price of $150 million, primarily to protect its balance sheet after $115.0 million of adverse reserve development in its former casualty reinsurance segment[272]. - As of December 31, 2024, the company had an outstanding unsecured balance of approximately $185.8 million under its bank credit agreement, which contains financial covenants requiring a consolidated net worth above a specified minimum and a leverage ratio not exceeding 0.35 to 1[274]. - The company may require additional capital in the future, which could be on unfavorable terms, potentially diluting shareholders' ownership interest[272]. Dividend Policy - The company announced a reduction in its quarterly dividend to $0.01 per common share from $0.05 per common share, effective November 11, 2024[272]. - The payment of cash dividends on common shares is restricted if cash dividends exceed $0.05 per share per quarter without consent from Series A Preferred Shareholders[329]. - The Company’s ability to pay dividends is subject to various factors, including financial condition and regulatory limitations[330]. Legal and Litigation Risks - The Company is involved in litigation regarding the Stock Purchase Agreement, which could have a material adverse effect on its financial position[313]. - The Company may face increased legal costs and management distraction due to ongoing litigation, which could negatively impact its business[309]. - The Company is involved in disputes related to the sale of JRG Re, which could materially affect its financial position[311]. Operational Risks - The company is exposed to operational risks, including fraud, errors, and system malfunctions, which could materially affect operations[347]. - The company relies on proprietary and third-party operating systems, which may be vulnerable to disruptions and security incidents[351]. - The company has disaster recovery plans in place, but significant disruptions to infrastructure could adversely affect operations and results[352]. Competition and Market Position - The company operates in a highly competitive environment, facing competition from larger specialty insurance companies and diversified financial services firms, which may limit its ability to compete effectively[275]. - Increased competition in the insurance market could adversely affect the company's ability to price products adequately and retain existing customers, potentially impacting future operating results[277]. - The company is committed to developing information technology systems and data analytics to remain competitive, but failure to keep pace with technological advancements could impair its competitive position[278]. Underwriting and Pricing Risks - The company relies on estimates and assumptions to set premium rates, which are critical for generating sufficient revenue to offset losses and expenses[226]. - The company’s ability to accurately price policies is subject to various risks, including insufficient data and regulatory constraints on rate increases[229]. - Most contracts are written for a one-year term, and if actual renewals do not meet expectations, future premiums written and operational results could be materially adversely affected[279]. - The company has the authority to change underwriting guidelines or strategy without shareholder approval, which could lead to significant operational changes[280]. Taxation and Compliance - U.S. tax-exempt organizations owning shares may recognize unrelated business taxable income if subpart F insurance income is allocated to them[287]. - FATCA provisions impose a 30% withholding tax on certain U.S. source income and passthru payments made by foreign financial institutions[288]. - The company may be treated as a foreign financial institution under FATCA, and U.S. shareholders should consult tax advisors regarding potential impacts[289]. - Changes in U.S. tax laws could retroactively affect the company's tax obligations and the attractiveness of its products[290]. - The IRS may recharacterize reinsurance premiums if they did not reflect arm's-length terms, potentially resulting in additional tax liabilities[293]. - Proposed legislation could exclude shareholders of certain foreign corporations from reduced tax rates on qualified dividend income[294]. - The Corporate Income Tax Act 2023 in Bermuda may impose a 15% tax on net income for multinational groups starting from January 1, 2025[305].