Femern A/S is part of Sund and Bælt Holding A/S, which is 100 percent owned by the Danish Transport Ministry. Sund & Bælt Holding A/S is also responsible for the fixed link across the Great Belt.
The company has its headquarters in Copenhagen. The company also has offices in Burg (on Fehmarn) and Rødbyhavn, Denmark. As of 1 February 2013 the company has 90 employees.