Information under § 14 Austrian Commercial Code (UGB) and § 5 E-Commerce Act (ECG) and according to § 25 Media Law (MedienG)

denkstatt GmbH
Hietzinger Hauptstraße 28
1130 Vienna, Austria
Telephone number: +43 1 786 89 00
Email address:

Registration number
FN 294077 t

Companies’ Register
Commercial Court Vienna

VAT number
ATU 63506833

Authority under E-Commerce Act
Municipal district office for the 13. and 14. district (trade authority)

Memberships of the Austrian Federal Economic Chambers
Austrian Chamber of Commerce
Vienna Chamber of Commerce

Divisions of the Austrian Chamber of Commerce
Management consulting
Technical offices – engineering Offices

Applicable Law
Trade Regulations under the Austrian trade Act (GewO):

Object of the Company
Advising companies on environmental and sustainability issues regarding their strategic orientation and development. As well as supporting companies within the operational implementation of environmental and sustainability Tasks.

Information under Media Law
This website and the newsletter of denkstatt GmbH are directed to clients and other persons interested in environmental and sustainability matters and trends.

Managing directors
Dip. Ing. Willibald Kaltenbrunner; Dipl. Ing. Dr. Christian Plas; Ing. Mag. Dr. Peter Linzner.

Dip. Ing. Willibald Kaltenbrunner with 6 % ; GUA-Gesellschaft für umfassende Analysen Ges.m.b.H. with 6 % ; CHP GmbH with 53 % , TOSACO GmbH with 19 % and Ing. Mag. Dr. Peter Linzner with 16 % .