Arch Reinsurance Group has named two senior leaders as chief executives across its Bermuda and US platforms. The move places dedicated command at the operational core of its casualty and specialty reinsurance business.
William Soares (pictured, left) has been appointed CEO of Arch Reinsurance Ltd. in Bermuda. Jon Schriber (pictured, right) has been named CEO of Arch Reinsurance Company in the United States. Both appointments took effect on July 9.
Both executives report to Jerome Halgan. Halgan was elevated to CEO of Arch's Global Reinsurance Group earlier in 2026 as part of a broader leadership restructure within Arch Capital Group.
The promotions consolidate leadership at a moment of material divergence across reinsurance lines. Property catastrophe pricing fell 10% to 20% at the January 2026 renewals. Casualty pricing continues to rise as social inflation and reserve uncertainty persist.
Arch Re's reinsurance segment wrote US$7.6 billion in net premiums in 2025, with casualty accounting for roughly 20% of that total and specialty a further 33%, per the group's 2025 annual report. The segment delivered US$1.6 billion in underwriting income for the year, a 27% increase from 2024.
Bermuda-based reinsurers posted a combined ratio of 88.1% in 2025, up from 87.2% in 2024, partly reflecting exposure to US casualty risks alongside North American catastrophe events, according to a March 2026 Morningstar DBRS report. Casualty reserve strengthening has shaped reinsurance earnings over the past two years, with several global carriers adjusting reserves for policy years 2019 to 2021 as claims emerged later than anticipated.
European reinsurers have pulled back from US casualty business. The retreat has altered how cedants allocate their casualty reinsurance programmes. Bermuda counterparties have taken a larger role in quota share arrangements as a result, according to Moody's Ratings.
Soares built much of Arch Re Bermuda's casualty and specialty book during his two decades with the group. Schriber joined Arch in 2023 as president of Arch Reinsurance Company and expanded its US portfolio during his tenure.
Casualty reinsurance capacity has remained broadly available, but rate alone is not a sufficient response to social inflation. Bob Forness, CEO of Bermuda-based MultiStrat, said in October 2025 that managing social inflation demands a multi-pronged approach. Risk selection, contract wording, exclusions, and claims oversight all factor alongside rate, he said.
Halgan attributed the promotions to the executives' track records. "William and Jon are outstanding leaders who have played significant roles in the success and growth of our reinsurance business," he said. "Their deep expertise, strong relationships and commitment to underwriting excellence position them well to further establish Arch Re as the leading, global reinsurer of choice."
Soares said the team would continue to prioritise underwriting rigour and client service. "Together, we will continue to focus on delivering the insight, responsiveness and underwriting discipline our clients value while pursuing opportunities for sustainable growth," he said.
Schriber pointed to the group's relationships as the foundation of its performance. "Our success is built on the strength of our teams, our underwriting acumen and the relationships we have cultivated over time," he said.
Arch Capital Group held approximately US$26.9 billion in capital at December 31, 2025 and wrote US$16.5 billion in net premiums for the full year, per its 2025 annual report.
