Buffett donates nearly $2.9 billion to Gates, family charities
Warren Buffett appears on CNBC's Squawk Box (Screen capture)

Warren Buffett has donated roughly $2.86 billion more Berkshire Hathaway Inc stock to five charities, as part of the billionaire's plan to give away nearly his entire fortune.

Buffett's 11th annual donation to the Bill & Melinda Gates Foundation and four family charities comprised 19.61 million Class "B" shares of Berkshire, according to a Thursday regulatory filing.

The donations, which were made on Wednesday, increased Buffett's total contributions to the charities to more than $24.3 billion since 2006.

(Reporting by Jonathan Stempel in New York; Editing by Jonathan Oatis)