05:33 AM EDT, 03/23/2026 (MT Newswires) -- Berkshire Hathaway's ( BRK/A ) (BRK.A, BRK.B) core reinsurance unit, National Indemnity, plans to acquire a 2.5% stake in Tokio Marine for 287.4 billion yen ($1.80 billion), the Japanese company said Monday.

Tokio Marine said the sale is part of a strategic partnership that will also include collaboration in reinsurance and other potential deals.

Tokio Marine will initially sell shares through a third-party allotment of treasury stock, but any additional purchases are expected to be made through the open market, the company said.

The Japanese company said that National Indemnity will not acquire more than 9.9% of Tokio Marine without prior approval from its board.