JPMorgan Chase & Co (JPM.N) 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. At the company’s annual meeting last week in Detroit, JPMorgan’s compensation for top executives was endorsed by only 61 percent of votes cast. Dimon also faulted investors for not thinking for themselves and instead following the recommendations of shareholder advisory services Institutional Shareholder Services and Glass Lewis & Co.