Saverys family-controlled shipowner CMB has upped its stake in tanker giant Euronav once again as it tries to halt a merger with John Fredriksen’s Frontline.

A US Securities and Exchange Commission (SEC) filing revealed that CMB and the family’s holding company Saverco now own 14.39% of the Belgian VLCC and suezmax specialist.

The biggest shareholder had 13.22% earlier this month, ahead of Fredriksen on about 10%.