Members of the Alafouzos family have increased their stakes in Oslo-listed VLCC owner Okeanis Eco Tankers.
CEO and chairman Ioannis Alafouzos bought another 18,000 shares at NOK 98 each in a deal worth $193,000, the company said.
He now owns 522,286 shares or 1.59% of the registered share capital.
And Sea Shell Enterprises, controlled by his brother Themistoklis Alafouzos, snapped up 45,000 shares at the same price, bringing its holding to 1.69%.
Entities controlled by members of the Alafouzos family now control 56.79% of Okeanis.
Last week, Okeanis director Dan Gold's QVT Financial became the second-biggest shareholder.
QVT, of which Gold is the founder and CEO, snapped up 400,000 shares on Friday at NOK 97.25 each, in deals worth NOK 39m.
The company now has 2.08m shares, or 6.34% of the registered capital.
It ranks second behind the Alafouzos family, but ahead of State Street Bank and Trust on 5.04%.
Okeanis said VR Capital Group sold 200,000 shares on the same day, cutting its holding to 1.49m shares or 4.55%.
Joshua Nemser, a portfolio manager of VR Capital Group, is also a member of the board of directors of Okeanis.
The stock was trading up 12.5% at NOK 99 on Monday morning as VLCC rates reached record highs of more than $300,000 per day.
Harvard graduate Gold is a well-known investor in shipping circles.
In May, QVT added 5,000 shares at NOK 70.50 each, raising its overall holding to 1,533,500 shares.
