Markel Signs $1.2 Billion Enstar Cover on $4.8 Billion of Reserves

Markel Insurance, the insurance operations within Markel Group Inc. (MKL ), and Enstar have entered into an adverse development cover reinsurance agreement covering a portfolio of Markel’s run-off global reinsurance business and certain exited lines within its insurance operations, Markel announced on October 28, 2026. The agreement includes subject reserves of $4.8 billion.

Under the transaction terms, Markel will retain the first $2.6 billion of the subject reserves and retrocede the next $2.3 billion to Enstar. Markel will obtain adverse loss development coverage of $1.2 billion above the $4.8 billion of subject reserves and will pay Enstar a risk premium of $120 million. The closing of the transaction is subject to regulatory approval and other customary conditions and is expected to occur by the end of the fourth quarter of 2026.

The cover will be provided by Cavello Bay Reinsurance Limited, Enstar’s wholly owned subsidiary, which the announcement describes as an S&P ‘A’ financial strength rated reinsurance platform.

The subject reserves include 2025 and prior underwriting years of business written within Markel’s Global Reinsurance division and its exited risk-managed professional liability, architects and engineers and other run-off lines within its global insurance operations. The cover protects against future adverse reserve development on those lines, and Markel will maintain claims control.

According to the company, the adverse loss development coverage reduces the level of prudency management requires in its best estimate of ultimate losses, and Markel expects the net impacts of the transaction to have an immaterial impact on underwriting results in the fourth quarter.

“This transaction provides additional certainty as these liabilities continue to run off and allows us to continue our focus on growing our core specialty insurance business,” said Simon Wilson, Chief Executive Officer of Markel Insurance. Wilson said the transaction advances the company’s strategic priorities, enhances financial flexibility, and further strengthens its ability to deliver long-term value for customers and shareholders.

Global Reinsurance Run-Off and Third-Quarter Results

In August 2025, Markel Insurance sold the renewal rights for contracts written through its Global Reinsurance division, and the division entered into run-off, according to non-GAAP reconciliation disclosures in Markel Group’s third-quarter results release, which was published on October 28, 2026, the same day as the reinsurance announcement.

Markel Group separately reported its third-quarter 2026 results on October 28, 2026 and announced it filed its Form 10-Q for the quarter ended September 30, 2026 with the Securities and Exchange Commission. For Markel Insurance, the combined ratio was 92% for the quarter, which the company said includes a three-point unfavorable impact from its exited Global Reinsurance division. Adjusted underwriting gross premium volume, a non-GAAP measure that excludes the exited Global Reinsurance division and the Hagerty business that transitioned to a fronting arrangement on January 1, 2026, increased 9% for the quarter and 10% year to date. Adjusted operating income at Markel Insurance increased 19% year to date to $1.2 billion, which the company attributed to improved underwriting profitability and higher net investment income.

On a consolidated basis, adjusted operating income increased 14% to $707 million for the quarter compared with $621 million in the third quarter of 2025. Operating revenues increased 6% for the quarter, and operating income, which includes market movements in the company’s equity portfolio, was $383 million in the quarter. Share repurchases were $315 million in the quarter and $685 million year to date.

Markel Group’s quarterly conference call is scheduled for Thursday, October 29, 2026, beginning at 9:30 a.m. Eastern Time.

Enstar Background

Enstar completed its acquisition by investment vehicles managed by affiliates of Sixth Street on July 2, 2025, at $338.00 in cash per ordinary share, representing a total equity value of $5.1 billion, according to Enstar’s announcement of the closing. Liberty Strategic Capital, J.C. Flowers & Co. LLC and other institutional investors also participated in the transaction. With the completion of the acquisition, Enstar’s ordinary shares ceased to be listed publicly, and the company continues to operate as a privately held, standalone company under the Enstar name.

Enstar describes itself as a global insurance group that offers capital release solutions through group companies in Bermuda, the United States, the United Kingdom, Continental Europe, Australia and other international locations, and states that it has acquired more than 120 companies and portfolios since its formation in 2001.