THEMA, the Operation and Maintenance Company managing the Thessaloniki Metro, is formed by ATM Group, a world leading expert in the operations and maintenance of Driverless Metro Systems and EGIS Group an international key player in the consulting, construction, engineering and mobility service sectors. THEMA is committed to offer to passengers, an upgraded travel experience based on the operation efficiency, passenger safety and environmental sustainability. THEMA, using its expertise coming from its mother companies, combined with the outstanding infrastructure and cutting edge Automatic Metro Technology provided by ELLINIKO METRO S.A., will facilitate the daily transportation of more than 300.000 passengers.