The SIGNAL IDUNA Group is a business alliance of individual firms in Germany.
The ultimate parent companies of the SIGNAL IDUNA Group are:      

• SIGNAL Krankenversicherung a. G., Dortmund 
• IDUNA Vereinigte Lebensversicherung aG für Handwerk, Handel und Gewerbe, Hamburg
• SIGNAL Unfallversicherung a. G., Dortmund
• Deutscher Ring Krankenversicherungsverein a.G., Hamburg.
  

These parent companies are mutual insurance companies. They are under a single management, and thus form a horizontally organized group (Gleichordnungskonzern) as defined in Sec. 18 (2) of the German Stock Corporation Act (Aktiengesetz).
The SIGNAL IDUNA Group companies are legally autonomous. They share a unified strategic and operational orientation by way of partial overlaps in their managing boards, supervisory boards and staffs, and through the formation of working groups and management associations.
The SIGNAL IDUNA Group has three registered offices in Germany:
one in Dortmund and two in Hamburg.

In the financial services sector, the Group has a private bank, a real estate savings and loan association, an investment company and an asset management company.

Elsewhere in Europe, the SIGNAL IDUNA Group has insurance companies in Hungary, Poland and Romania and a reinsurance company in Switzerland. There are plans to gradually tap additional markets, especially in Eastern Europe.