Stig Eide Sivertsen was appointed CEO of Electromagnetic Geoservices (EMGS) after Bjarte Bruheim decided to step down from the position, the company said in a news release.

The change became effective immediately. EMGS said it has initiated a search for a new CEO.

Bruheim held the position since Jan. 7. He previously served as the company’s executive chairman.

Until a permanent CEO is in place, Sivertsen has been appointed new CEO. As the CEO cannot be a member of the board of directors, according to the Norwegian Public Limited Liability Companies Act, Sivertsen has voluntarily resigned as board member with immediate effect, the release said.

Sivertsen, who also chaired the company's audit committee, previously worked for Schibsted, Petroleum-Geo Services and Telenor ASA.