Arch Capital Group Ltd. (NASDAQ:ACGL) ("Arch" or the "Company"), a leading provider of insurance, reinsurance and mortgage insurance globally, today announced the promotions of Jerome Halgan to CEO of Arch Global Reinsurance Group and Michael Schmeiser to CEO of Arch Global Mortgage Group. Both will continue to report to Arch President Maamoun Rajeh.

"Jerome and Michael are experienced leaders who are deeply grounded in Arch's underwriting culture and corporate values, and they have consistently outperformed through market cycles," Rajeh said. "Through disciplined capital deployment and strong relationships, both have contributed meaningfully to the strength of our global platform. Their leadership will help us continue to activate Arch's deep bench of talent, execute with consistency and position us to deliver long-term value for clients and shareholders."

Halgan joined Arch in 2009. He has served as President and Chief Underwriting Officer of Arch Reinsurance Group since 2024, and as CEO of Arch Re Bermuda since 2018. Schmeiser joined Arch in 2017 and has served as President and CEO of Arch U.S. Mortgage since 2019.

"I am honored for this opportunity to continue building Arch's global reinsurance platform side-by-side with some of the brightest minds in the industry," Halgan said. "Our approach remains consistent: applying disciplined underwriting, managing the cycle carefully and deepening our relationships with brokers and cedants. That foundation allows us to deliver the insights and solutions our clients need and to grow the business over the long term."

"I'm proud to step into this role leading the world's foremost provider of mortgage credit risk solutions," Schmeiser said. "Our diverse businesses are supported by analytical rigor, strong relationships and a depth of experience unmatched in the industry. I look forward to applying my knowledge of our U.S. operations to our other Global Mortgage businesses and collaborating more closely with our teams around the world."

These appointments follow the recent expansion of Maamoun Rajeh's role as President of Arch. Arch Insurance North America CEO Matt Shulman and Arch Insurance International CEO Hugh Sturgess will continue to report to Rajeh.

About Arch Capital Group Ltd.

Arch Capital Group Ltd. (NASDAQ:ACGL) is a publicly listed Bermuda exempted company with approximately $26.9 billion in capital at March 31, 2026. Arch, which is part of the S&P 500 Index, provides insurance, reinsurance and mortgage insurance on a worldwide basis through its wholly owned subsidiaries.

Cautionary Note Regarding Forward-Looking Statements

The Private Securities Litigation Reform Act of 1995 provides a "safe harbor" for forward-looking statements. This release or any other written or oral statements made by or on behalf of Arch Capital Group Ltd. and its subsidiaries may include forward-looking statements, which reflect the Company's current views with respect to future events and financial performance. All statements other than statements of historical fact included in or incorporated by reference in this release are forward-looking statements.

Forward-looking statements can generally be identified by the use of forward-looking terminology such as "may," "will," "expect," "intend," "estimate," "anticipate," "believe" or "continue" or their negative or variations or similar terminology. Forward-looking statements involve the Company's current assessment of risks and uncertainties. Actual events and results may differ materially from those expressed or implied in these statements. A non-exclusive list of the important factors that could cause actual results to differ materially from those in such forward-looking statements includes the following: adverse general economic and market conditions; increased competition; pricing and policy term trends; fluctuations in the actions of rating agencies and the Company's ability to maintain and improve its ratings; investment performance; the loss of key personnel; the adequacy of the Company's loss reserves, severity and/or frequency of losses, greater than expected loss ratios and adverse development on claim and/or claim expense liabilities; greater frequency or severity of unpredictable natural and man-made catastrophic events, including the effect of contagious diseases on our business; the impact of acts of terrorism and acts of war; changes in regulations and/or tax laws in the United States or elsewhere; statutory or regulatory developments, including as to tax matters and insurance and other regulatory matters; ability to successfully integrate, establish and maintain operating procedures as well as integrate the businesses the Company has acquired or may acquire into the existing operations; changes in accounting principles or policies; material differences between actual and expected assessments for guaranty funds and mandatory pooling arrangements; availability and cost to the Company of reinsurance to manage our gross and net exposures; the failure of others to meet their obligations to the Company; an incident, disruption in operations or other cyber event caused by cyber attacks, the use of artificial intelligence technologies or other technology on the Company's systems or those of the Company's business partners and service providers, which could negatively impact the Company's business and/or expose the Company to litigation; and the other matters set forth under ITEM 1A "Risk Factors", Item 7 "Management's Discussion and Analysis of Financial Condition and Results of Operations" and other sections of our 2025 10-K, as well as the other factors set forth in our other documents on file with the SEC, and management's response to any of the aforementioned factors.

The foregoing review of important factors should not be construed as exhaustive and should be read in conjunction with other cautionary statements that are included herein or elsewhere. All subsequent written and oral forward-looking statements attributable to us or persons acting on the Company's behalf are expressly qualified in their entirety by these cautionary statements. The Company's forward-looking statements speak only as of the date of this press release or as of the date they are made, and the Company undertakes no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, future events or otherwise.

Source: Arch Capital Group Ltd.

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Media Contact: Greg Hare — ghare@archgroup.com

Arch Capital Group Appoints Halgan CEO of Global Reinsurance and Schmeiser CEO of Global Mortgage