Essex Rental (ESSX) announced senior management changes, including the appointment of Nicholas Matthews to the newly created position of Chief Operating Officer. Prior to joining the company, Matthews served as Vice President and Group Executive for Railcar Operations at GATX (GMT). Additionally, the company announced the resignation of Marty Kroll, Essex’s Senior Vice President and Chief Financial Officer. Kroll has decided to pursue other opportunities and has agreed to support the company through a transitional period, the company said. Kory Glen, the Director of Finance at Essex for the last four years has been named the new CFO.