Aspen Insurance to Be Acquired by Sompo in USD 3.5B Deal

Sompo Holdings, Inc. entered into a definitive agreement for a merger to purchase 100 percent of Aspen Insurance Holdings' issued Class A ordinary shares for USD 3.5 billion, which represents a significant action in enhancing its global property and casualty (P&C) platform. The deal was unanimously approved by both companies' boards and is anticipated to close during the first half of 2026, pending customary regulatory and antitrust approvals.

James Shea, Sompo P&C CEO, emphasized the strategic value of the acquisition. "Strategic acquisitions have been an integral component of our growth strategy to develop a strong and diversified global P&C platform, and Aspen is a great opportunity at the right moment in the market cycle. We are excited to welcome the Aspen team as we combine our organizations," he said.

Key Highlights:

• Sompo to acquire Aspen Insurance for USD 3.5 billion, strengthening its global property & casualty platform
• Aspen brings expertise in casualty, property CAT, and specialty reinsurance, along with Lloyd’s syndicate access to complex risks and new markets
• Deal unanimously approved by both boards, expected to close in H1 2026 pending regulatory and antitrust clearances

Aspen offers powerful experience in casualty reinsurance, property catastrophe reinsurance, specialty reinsurance, and other property lines. Its Lloyd's syndicate offers exposure to complex risks and emerging markets reinsurance licensing, such as in Asia-Pacific.

Scale and ability are still at the heart of success for the reinsurance market, Shea added,"Once again, the P&C market continues to value platforms that can underwrite and manage capital and risk at scale, and with exceptional skill."

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Sompo will combine Aspen's operations with its current overseas business, utilizing synergies to pursue additional expansion in developed and high-growth economies.

The transaction sets Sompo up well to substantially extend its international presence while enhancing its underwriting, capital management, and risk diversification capabilities.