Warren Buffett's investment firm Berkshire Hathaway Inc. (BRK.A) - Get Report is in talks to purchase a stake in IRB Brasil Resseguros SA, Latin America's largest reinsurer, Bloomberg reported.  

No deal is imminent before the company's July 27 IPO pricing date, sources told Bloomberg. The Brazilian government, which holds a 27% stake in the company, will be among the stake sellers for the IPO, which is expected to raise up to $920 million. 

Insurers BB Seguridade Participacoes SA and Bradesco Seguros SA each own a 20.4% stake, while Itau Unibanco Holding SA holds about a 15% stake. 

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