Retired Chairman/President of Bank One Corporation. Director since 1997. Mr. Istock joined NBD Bank in 1963 and served as Vice Chairman and director of NBD Bank and its parent, NBD Bancorp, from 1985 until he was named Chairman and Chief Executive Officer in 1994. Upon the merger of NBD and First Chicago Corporation in December 1995, he was named President and Chief Executive Officer of First Chicago NBD Corporation and was elected Chairman in May 1996. Upon the merger of First Chicago NBD Corporation and Bank One Corporation in October 1998, he was named Chairman of the Board of Bank One Corporation, where he served in various executive positions until his retirement in September 2000. Mr. Istock is a director of Kelly Services, Inc. and Rockwell Automation, Inc.