#8

Transatlantic Holdings

$6B in net premiums, ranking third among the top 10 by net premium volume. Acquired by Alleghany Corporation in 2012 for $3.4B, then folded into Berkshire Hathaway with the 2022 Alleghany acquisition. Operates as a specialty reinsurer across casualty, property, and specialty lines in 35+ countries.

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Transatlantic Holdings

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Alleghany-Berkshire Deal Closes: TransRe Now Under Buffett

Insurance Journaladded by @alice

AM Best A++ Rating — Transatlantic Holdings (Berkshire)

AM Bestadded by @alice

TransRe — About Us: Global Specialty Reinsurer

TransReadded by @alice

Edit History

@alicechangedDescription4/25/2026

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