Automatic Data Processing Inc.’s finance chief plans to resign from his post, the payroll-processing company said Tuesday, a departure that comes as the firm faces scrutiny from a trio of activist investors.
Jan Siegmund will remain in the role while ADP looks for a replacement, Chief Executive Carlos Rodriguez said during a meeting with investors Tuesday. He said Mr. Siegmund had been planning to leave for a while, but the company had “successfully convinced him for some period of time now to stick around, because of all...