Greek shipowner George Economou has reopened a war of words with tanker company Performance Shipping ahead of a key investor vote next week.

US-listed Performance, controlled by Greece’s Palios family, has called its annual general meeting for 17 December, at which it is seeking to re-elect Aliki Paliou as chair.

Shareholder Economou has launched a takeover offer and court action against the company over alleged breaches of fiduciary duties to shareholders in dominating voting control through a dual-class ownership structure.