Oshkosh Corp. today announced that Keith Allman, an Oshkosh director since 2015, has been appointed as the company's independent chair of the board. Allman’s appointment was effective at the company’s annual meeting of shareholders. He succeeds Steve Newlin who has served as chair since 2020 and is leaving the Oshkosh Board after reaching the mandatory retirement age, according to a company statement. Allman has been president and chief executiv…