Markel agrees to buy $1.2B adverse development cover from Enstar

Markel Group agreed to pay Enstar Group a $120 million risk premium for $1.2 billion of adverse development cover on underwriting years 2025 and prior, according to a Markel statement cited by Carrier Management on Nov. 2.

The cover sits above $4.8 billion of subject reserves. Markel retains the first $2.6 billion and retrocedes the next $2.3 billion to Cavello Bay Reinsurance Ltd., Enstar's wholly owned subsidiary. Insurance Capital Daily reported on Oct. 28 that Cavello Bay would cover $2.3 billion of Markel run-off reserves. The agreement runs between Cavello Bay and Markel Insurance, the group's insurance operations, and Markel keeps administrative and claims handling on the portfolio.

The $120 million premium equals 10% of the $1.2 billion limit. For allocators who buy legacy and casualty reserve risk, that gives a reference price on a multi-line runoff book: 10 cents of premium for every dollar of cover.

The cover addresses the runoff of Markel's Global Reinsurance division and other exited lines, including professional liability and architects and engineers. "We are taking decisive action on legacy exposures," Simon Wilson, chief executive officer of Markel Insurance, said on an analysts' call to discuss third-quarter results. "This is about creating greater certainty around the run-off and allowing us to focus even more squarely on the ongoing specialty insurance business," he said.

The transaction does not include a $205 million reserving charge at State National, Markel's fronting carrier subsidiary. Brian Costanzo, Markel Insurance's chief financial officer, said on the call that State National had issued paper for a reinsurer now in bankruptcy.

Markel Insurance sold the renewal rights to its $1.2 billion reinsurance business to Nationwide in August 2025, and the reinsurance division was then placed into orderly runoff. Dominic Silvester, Enstar's chief executive officer, said the agreement "will give Markel greater certainty over its legacy liabilities as it focuses on growing its core specialty insurance business." Completion is expected by the end of the fourth quarter of 2026, subject to regulatory approval and other customary closing conditions.