SEC filings

“Buffett, one of the richest people on the planet, donated 2.4 million Class B shares of Berkshire Hathaway, worth nearly $759 million based on Wednesday's closing price, according to filings made wit…”

“The Susan Thompson Buffett Foundation received 1.5 million shares.”

“300,000 shares each were donated to the Howard G. Buffett Foundation, the Sherwood Foundation and the Novo Foundation.”

“After the latest donation, Buffett owns 15.5% of Berkshire's shares and 31.4% of the company's voting power.”