Bob Wamboldt, Johns Manville's president of JM's insulation systems, will replace Mary Rhinehart as the company's new president and CEO in the fall.

John G. Lewis brings more than 20 years of senior management experience to EDCO, including finance, engineering and manufacturing, most recently as CEO of Trex Commercial Products Inc., a building products manufacturer.

Jeff Swartz replaces John Crum, who is retiring after 18 years, as the new CEO of Seaman Corporation as of April 15.