Ms. Mariel von Schumann has been the Head of Governance & Markets at Siemens Aktiengesellschaft (also known as Siemens AG) since November 2013 and serves as its Chief of Staff. Ms. von Schumann was responsible for Siemens Aktiengesellschaft 's investor relations activities until December 1, 2015. She served as the Head of Investor Relations at Siemens Aktiengesellschaft from February 2009 to October 2013. She has expertise in specific functional areas in Chief of Staff, Mergers & Acquisitions, Capital Market, Board & Management Incentive Systems, Government Affairs. She has been working with Siemens AG since last 18 years and has held various senior level positions with Siemens AG, including Director of Strategy & Business Alliances ­Information & Communication Mobile and Head of Mergers & Acquisitions, Group Investment Management, Special Projects ­ Communications Division. She has been a Non-Executive Director at Siemens Limited since August 2, 2013. She serves as a Non-Executive Proprietary Director at Gamesa Corporación Tecnológica, S.A. She studied at ICHEC - Brussels. She holds MBA with Management at ESCP Europe.