Steve Wevodau

OMAHA, Neb. (AP) — Billionaire Warren Buffett has donated stock in his company worth a total of nearly $3.6 million to two unnamed charities.Buffett disclosed the donations of Berkshire Hathaway Inc. stock in a Securities and Exchange Commission filing Monday.

One donation of 676 Class B shares was made in September and a donation of 595 Class B shares was made in December. Class B shares sold for $2,822 Monday afternoon.

Buffett did not immediately respond to questions about the donations e-mailed to his Omaha office.

Buffett has previously said all of his Berkshire stock will go to charities over time.

After these latest donations, Buffett held 2,018,997 Class B Berkshire shares and 350,000 Class A shares, which were selling for $85,500.