Dubai Mercantile Exchange (DME) said it appointed John F Sandner and Ali Tabbal to its Board of Directors. Fadel Abdulbaqi Al Ali, Deputy Chairman since 2005, and Stephen Ardizzone, a Director since 2006, stepped down as members of the DME board. Sandner was Chairman of the Chicago Mercantile Exchange (CME) for 13 years, making him the longest serving exchange chairman in the history of the futures industry. In January 1998, Sandner was elected Special Policy Advisor to the CME Board of Directors, a position which he held until October 2005. Sandner continues to serve on the CME Group Board of Directors and is a member of the Executive Committee of the CME Group. Tabbal is Chief Financial Officer of Dubai Holding. He joined it in 2005 from Tecom where he was the Director of Finance. He is responsible for strategic, financial and treasury areas of the Group as well as ensuring compliance with corporate governance policies and objectives. Commenting on the appointments, DME Chairman Ahmad Sharaf said: "As leaders in their respective fields, Ali Tabbal and Jack Sandner bring valuable industry and regional expertise to the DME board. We look forward to working closely with them and harnessing their insights and counsel." Keep up with the latest business news from the region with the Emirates Business 24|7 daily newsletter. To subscribe to the newsletter, please click here .