Legal information

Legal information

According to § 5 TMG

Negotiation Advisory Group GmbH

Hafenstrasse 25
68159 Mannheim
Tel.: +49 162 4480140

Board of Management
René Schumann
Stefan Oswald

Trade register County Court Mannheim
HRB 740619
VAT ID: DE 317910175

Responsible for the content

René Schumann and Stefan Oswald
Hafenstrasse 25
68159 Mannheim

Liability for content

As a service provider, we are responsible for our own content on these pages in accordance with § 7 para.1 of the German Telemedia Act. According to §§ 8 to 10 TMG, as a service provider, we are not obliged to monitor transmitted or stored third-party information or research circumstances that indicate illegal activity. Obligations to remove or block the use of information in accordance with general laws remain unaffected. Liability in this regard is only possible from the point in time at which we become aware of a specific legal violation. As soon as we become aware of such legal violations, we will remove this content immediately.

Liability for links

Our offer contains links to external third-party websites, over whose content we have no influence. Therefore, we cannot accept any liability for this third-party content. The respective provider or operator of the pages is always responsible for the content of the linked pages. The linked pages were checked for possible legal violations at the time they were linked. No illegal content was found at the time the link was created. A permanent control of the content of the linked pages is not reasonable without concrete evidence of an infringement. If we become aware of legal violations, we will remove such links immediately.


The content and works on these pages created by the website operator are subject to German copyright law. The duplication, processing, distribution and any kind of exploitation outside the limits of copyright law require the written consent of the respective author or creator. Downloads and copies of this website are only permitted for private, non-commercial use. Insofar as the content on this site was not created by the operator, the copyrights of third parties are respected. In particular contents of third parties are marked as such. Should you nevertheless become aware of a copyright infringement, we would ask you to notify us accordingly. If we become aware of any legal violations, we will remove such content immediately.

Image rights

Unless otherwise noted, the image and video rights are held by the Negotiation Advisory Group GmbH.

Gender statement

Equality, integration and inclusion are important values for us.
The Negotiation Advisory Group (NAG) embodies and fosters diversity and equal opportunities.

Communication agency


Hindemithstr. 29

55127 Mainz-Lerchenberg

Represented by:

Andreas Valentin, Executive Partner

Phone: +49 (0) 6131 94518 10

Fax: +49 (0) 6131 9451822


Layout, graphic and webdesign

Niederwaldstr. 9
65187 Wiesbaden

Represented by:
Jana Brömmel, Dirk Brömmel

Phone: +49 (0) 611 20 49 416
Fax: +49 (0) 611 20 49 425

Technical implementation and hosting

Bilderwerk GmbH

  • Büro Wiesbaden
    Rheingaustrasse 85
    65203 Wiesbaden
  • Büro Berlin
    Waldenser Strasse 2-4
    10551 Berlin

Represented by:
Sven Biernath, Managing Director

Phone: +49 (0) 611 945 800 10
Mobil: +49 (0) 170 859 36 12