Eni S.p.A. (BIT:ENI) agreed to acquire unknown majority stake in ATEN OIL, S.L. from Marcol Group on April 28, 2024. The agreement is still awaiting authorization from the competition authorities. The majority of the company's capital is in the hands of the English fund Marcol, whose only stake in Spain is Atenoil, and a good part of the debt was in the hands of the French manager Kartesia.

The founding partners also appear as minority shareholders.