3M announced that William M. "Bill" Brown is appointed chief executive officer, effective May 1, 2024. He succeeds Michael Roman, who is appointed to the role of Executive Chairman of the 3M Board of Directors, also effective May 1, 2024. Brown, 61, is the former Chairman of the Board and Chief Executive Officer of L3Harris Technologies, a global innovator in aerospace and defense technology solutions, where he served as chief executive officer and chairman, and then executive chair from June 2019 to June 2022.

Brown previously served as chairman, president, and chief executive officer of Harris Corporation prior to its merger with L3 Technologies in 2019. He joined Harris Corporation in November 2011 as president and chief executive officer. Prior to Harris Corporation, Brown spent 14 years at United Technologies Corporation (UTC) serving in a variety of leadership roles.

Brown holds bachelor's and master's degrees in mechanical engineering from Villanova University, as well as an MBA from The Wharton School, University of Pennsylvania. He is the former Chair of the Aerospace Industries Association (AIA) Board of Governors and formerly a member of AIA's Executive Committee. Roman will continue to chair 3M's Board of Directors and provide insights from his more than 35 years with 3M to the company's strategic direction as executive chairman of the board.

He has served as 3M's CEO since July 2018. 3M also announced that the Board of Directors waived the mandatory retirement age of 65 years for Roman and Brown.