Diethelm Sack ( born June 7, 1948 in Frankfurt am Main ) is a German economist. From 1991 to March 31, 2010, he was a board member of Deutsche Bahn AG (formerly German Railways ). He was responsible for Finance and Controlling.
Bag trained as an industrial clerk and then studied from 1967 to 1970 at the University School in his hometown of Business Administration. After that, he was until 1976 Commercial Director at Franz Garny AG.
From 1976 to 1991 he conducted at VDO Adolf Schindling operations in the area of finance and accounting. In November 1991 he was in the German Federal Railroad board member, took over the finance and controlling, and remained in this position also in 1994, when the German Bahn AG was founded. As of March 1993, he had held this position for the German Reichsbahn. Since 2 June 2008, he held this position for the DB Mobility Logistics AG.
Between the dismissal of John Lewis the September 30, 1999 and the entry Mehdorn 16 December 1999 bag was provisionally the company CEO. On March 14, 2001 extended the DB Supervisory Sacks contract, which was due to expire on 10 November 2001, a further five years.
Bag left at 31 March 2010, the Company. The Supervisory Board appointed on December 9, Richard Lutz, formerly Head of Controlling and sack deputy, as his successor. The EBIT of the Deutsche Bahn AG rose (without legacy reimbursement) of -2988 million euros (1994 ) to 2.483 billion Euros (2008).
In April 2009, Sack founded with Hartmut Mehdorn and Herbert Walter in Frankfurt am Main, a shared office and advises companies.