Todd Combs, portfolio manager and investment officer of Berkshire Hathaway Inc., arrives for the morning session of the Allen & Co. Media and Technology Conference in Sun Valley, Idaho, U.S., on Friday, July 12, 2019.Warren Buffett's Berkshire Hathaway announced a number of structural changes before the legendary CEO steps aside at the end of this year, among them the departure of Todd Combs, investment officer and GEICO CEO.Combs, 54, is leaving for a role at JPMorgan Chase, where he already serves on the ...