Presently, Marc D. Hamburg holds the position of Chief Financial Officer, Secretary & Senior VP at Berkshire Hathaway, Inc. and President at BH Finance LLC and Manager of Burlington Northern Santa Fe LLC (both are subsidiaries of Berkshire Hathaway, Inc.). He is also on the board of Precision Castparts Corp., XTRA Corp., Richline Group, Inc. and Berkshire Hathaway Energy Co. In the past Mr. Hamburg held the position of Treasurer of Wesco Holdings Midwest, Inc.