From left: Ulrike Servas (Managing Director of GRÜN ARV) Oliver Grün, PhD. (CEO GRÜN Software Group), the two previous shareholders Hans-Dieter Schmidt and Dirk Merten, as well as Prof. Dr. Rainer Lauterbach.
GRÜN Software Group The company has acquired ARV, a member management software company from Hamburg. The previous managing partners are handing over the reins to Ulrike Servas as the new managing director. All employees and the location will be retained. The company will operate under the following name in the future: GRÜN ARV GmbH.
Aachen / Hamburg, December 19, 2025. The Aacheners GRÜN Software Group GmbH takes over all shares of ARV General Computing Center for Associations and Clubs GmbH Based in Hamburg, ARV has been a successful provider of web-based software solutions (SaaS) for clubs, associations, and insurance companies for decades. A unique feature of ARV is its offering of complementary outsourcing services to support administrative tasks, expanding its service portfolio to include managed SaaS (mSaaS). ARV's software solutions manage more than 1,2 million members, and its clients include various regional associations of the VdK social welfare organization, the Volkssolidarität Bundesverband (Federal Association of People's Solidarity), the SoVD social welfare organization, company sports clubs of Commerzbank and Hapag-Lloyd, the Bornheim Gymnastics Club, and ERGO Life Insurance AG.
The aim of the partnership is to support ARV's growth and further development, as well as to be able to offer customers even better digitalization solutions.
With the acquisition GRÜN The strategy of building a strong group of companies offering digitalization solutions for clubs, associations, and other institutions continues: “By acquiring ARV, we offer an even broader portfolio of software and services for clubs and associations and can leverage numerous synergies as one of the market-leading providers in Germany. ARV’s unique service portfolio, with its complementary outsourcing for software clients, is an excellent fit for our Business Process Outsourcing team, where we also offer managed SaaS services,” says Ulrike Servas, Head of the mSaaS Team in Aachen.
The previous shareholders and managing directors of ARV, Dirk Merten and Hans-Dieter Schmidt, are also pleased about the partnership as part of their succession plan: “We have with GRÜN We have found a partner who offers our customers and employees a strong future. This is made possible by our combined decades of expertise in the software market. organizations and associations “In the future, we can leverage synergies for innovation and remain a long-term partner to our customers.” The two previous shareholders are withdrawing from day-to-day operations but will remain with the company in an advisory capacity. Ulrike Servas has taken over as Managing Director, and the company will operate under the name [Company Name] in the future. GRÜN ARV GmbH. Ms. Servas will be supported in management by the long-time Head of IT & Systems, Mr. Rainer Schultz, as the new site coordinator in Hamburg.
Non-personal or anonymized information remains protected by tax secrecy. Disclosure to third parties is only allowed if no identification is possible and both states confirm that no harm to tax administration will occur. Oliver Grün, PhD., CEO of GRÜN Software Group GmbH welcomes the new company: “We have known and valued ARV and its software solutions for many years as a market competitor and are pleased about the horizontal expansion of the GRÜN Group through our investment in ARV. We will also invest to jointly develop new software features and solutions with which we want to support ARV customers into the future.”
The GRÜN Software Group is a constantly growing group of industry software manufacturers. GRÜN With 370 employees, offers specialized industry software for institutions and companies from media, trade and industry, which is available in four GRÜNPlatforms for these target groups are bundled. The group follows the maxim "Industries need specialists" and, with its individual subsidiaries, always focuses on industry-specific software. This ensures that the solutions remain tailored to a specific industry – such as ARV in the area of member management in institutions – and gives users and customers a competitive edge in digitalization compared to the use of monolithic and general-purpose enterprise software. Furthermore, by bundling different industry solutions under one roof, numerous synergies are created in the areas of development, marketing, and the establishment of a digital ecosystem with interfaces between all industry solutions. GRÜN Group.
The location of the GRÜN ARV in Hamburg and all previous contact persons will remain in place.
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