July 9, 2025

Arch Appoints Ondine Bourrut Lacouture Active Underwriter of Arch Syndicate 1955 at Lloyd’s

PEMBROKE, Bermuda 9th July 2025 – Arch Capital Group Ltd. (Arch) today announced the promotion of Ondine Bourrut Lacouture to Active Underwriter of Arch Syndicate 1955 at Lloyd’s.

Ondine succeeds Simon Williams, who had served as the Active Underwriter of Syndicate 1955 since it was acquired by Arch in 2019. Williams will continue in his role as Chief Strategy and Distribution Officer of Arch Insurance International, which he has held since 2018.

“We congratulate Ondine on her promotion,” said Jerome Halgan, President and Chief Underwriting Officer of Arch Reinsurance Group. “It’s a tribute to her underwriting acumen and our belief in her ability to meaningfully and thoughtfully continue to grow Syndicate 1955.”

Arch’s Insurance and Reinsurance teams have grown the stamp capacity of Syndicate 1955 more than three times since the acquisition, deploying cycle management and portfolio optimization to enhance profitability. Syndicate 1955 is now a highly diversified and profitable vehicle for Arch and its supporting third-party capital.

“Under Simon’s leadership, Syndicate 1955 has emerged as a strong performer at Lloyd’s and has significantly expanded its footprint,” said Hugh Sturgess, President and CEO of Arch Insurance International. “We sincerely thank Simon for his commitment, and we know he will continue to bring enthusiasm and forward thinking to his ongoing role as Chief Strategy and Distribution Officer. We welcome Ondine to the senior leadership team and look forward to all that she will accomplish.”

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About Arch Capital Group Ltd.

Arch Capital Group Ltd. (Nasdaq: ACGL) is a publicly listed Bermuda exempted company with approximately $24.3 billion in capital at March 31, 2025. 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.

About Arch Insurance International

Arch Insurance International is part of Arch Capital Group Ltd. and includes Arch Insurance UK and the P&C insurance operations of Arch Insurance (EU) dac, as well as Arch’s insurance operations in Europe, Bermuda and Australia.

About Arch Worldwide Reinsurance Group

Arch Worldwide Reinsurance Group encompasses Arch’s reinsurance operations around the globe. With offices in North America, Bermuda, Europe and Australia, Arch Worldwide Reinsurance provides specialty risk solutions through treaty and facultative property and casualty reinsurance with a disciplined underwriting approach.

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;  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 other factors identified in our filings with the U.S. Securities and Exchange Commission (SEC).

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.

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Source: Arch Capital Group Ltd.

Tag: arch-insurance-and-reinsurance

Media Contacts

Patrick Palmer 

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Greg Hare

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