Warren Buffett on Saturday defended his recent controversial vote on executive pay at Coca-Cola Co and disappointing performance at railroad BNSF, as investors grilled him on his Berkshire Hathaway Inc conglomerate at its annual shareholder meeting. The investment guru was peppered with questions at the meeting, part of a mostly festive weekend that Buffett calls “Woodstock for Capitalists,” following concerns that Berkshire last year missed Buffett’s five-year growth target for the first time in his 49 years at the helm.