Hamilton Insurance Group has launched a casualty reinsurance sidecar, expanding its access to third-party capital and adding dedicated underwriting capacity to support the company’s casualty reinsurance portfolio as it looks to scale its operations more efficiently.
The Bermuda-headquartered insurer said the new structure will provide reinsurance capital over a multi-year period, with total ceded premium across the life of the arrangement projected at approximately $300 million. Sixth Street, a global investment firm known for its work with insurance companies, will provide the investor capital and oversee the overall asset strategy for the sidecar.
The move marks a notable step in Hamilton’s broader effort to deepen its third-party capital capabilities and diversify earnings through fee-generating structures tied to its underwriting franchise. The company said the sidecar is designed to support disciplined growth in casualty reinsurance while improving capital efficiency.
“We are extremely pleased to announce that we have successfully established our first casualty reinsurance sidecar,” said Tim Duffin, Hamilton’s group chief underwriting officer. “This sidecar enhances our ability to support casualty reinsurance underwriting through scalable and efficient capital solutions, supports our disciplined growth strategy, and provides Hamilton with an additional source of fee income.”
As part of the expansion, Hamilton also announced the promotion of Tristan Latarche (pictured) to senior vice president of Hamilton ILS, effective April 1, 2026. Latarche will report to Duffin and will lead the continued development and execution of the company’s third-party capital strategy as the platform grows in size and sophistication.
“Tristan’s promotion further strengthens our leadership bench as we continue to develop our third-party capital capabilities over the long term,” Duffin said.
Latarche joined Hamilton in September 2024 as vice president and portfolio manager to help support the company’s third-party capital strategy. Before joining Hamilton, he held underwriting and actuarial roles at Hiscox Re in London. He is also a Fellow of the Institute of Actuaries.
Hamilton said it will use its existing third-party capital platform, Ada Re Ltd., for the new offering. The company described Ada Re as a core part of its broader capital strategy and an increasingly meaningful contributor to fee-based earnings. Ada Re currently provides collateralized property catastrophe reinsurance and retrocessional coverage, complementing the Bermuda-based property reinsurance portfolio of Hamilton Re and allowing the group to offer a wider range of solutions to clients.
The casualty sidecar adds another dimension to that platform, signaling Hamilton’s intention to broaden the scope of third-party capital beyond property catastrophe business into other reinsurance lines.
Aon Securities LLC served as sole structuring agent and placement agent for the transaction. Legal counsel for Hamilton was provided by Willkie Farr & Gallagher LLP and Carey Olsen Bermuda Limited.
