JPMorgan Chase officials have not done enough to show how well the company is run, Chairman and CEO Jamie Dimon said on Wednesday, after one-third of shareholders disapproved last week of his pay and the practice of one person holding his two jobs.

"We have to do a better job of describing to the investor class" how the board of directors oversees executives, Dimon said at an investor conference. Since he came to the bank a decade ago, Dimon said, he has stepped out of board meetings so that directors will discuss their views and his performance independently.