Earlier this month, six Norwegian salmon companies, including the four largest listed salmon companies -- Leroy Seafood Group, Grieg Seafood, SalMar and Mowi -- reached an $85 million (€79 million) civil court settlement with US salmon buyers in a case involving alleged illegal price collusion.

And while the settlement is significant, its impact on the companies' operating finances is minimal. Nevertheless, the news has shareholders anxious over the possibility of future fines and other costs associated with related criminal cases in EU and United States.