Arnold Schiefer

ÖBB-Infrastruktur AG designs and constructs railway infrastructure projects. It also operates railway stations, bridges, tunnels, railway crossings, hydroelectric power stations, and buildings. Its services include inspection and repair works, as well as providing railway-specific construction services. The company was founded in July 1969 and is headquartered in Vienna, Austria.

Österreichische Bundesbahnen-Holding AG engages in the holding and management of participations in companies of the ÖBB Group with focus on strategic orientation. It also provides infrastructure, transportation, and logistics services. The company was founded on April 20, 2004 and is headquartered in Vienna, Austria.

Heta Asset Resolution AG operates as a wind-down company, which engages in managing and disposing assets. The company was founded in 1896 and is headquartered in Klagenfurt, Austria.