Reference Transaction

Advising CallOne GmbH on the sale to Rigeto Unternehmerkapital GmbH

CallOne GmbH logoRigeto Unternehmerkapital GmbH logo
Sell-side M&A
Transaction by Zumera

Represented by Zumera

CallOne GmbH is a German telecommunications company based in Hamburg, Germany. It is an integrated service provider with solutions for voice, messaging and data services. It has international carriers to provide access to most markets in the world, and offers a wide range of features, including call forwarding services, international roaming, and virtual phone numbers. CallOne GmbH also provides various value-added services, such as call recording, voice mail and voice to text conversion.

The Rigeto Unternehmerkapital GmbH is a private equity firm based in Munich, Germany. They specialize in acquisitions and investment in complementary businesses that provide software development, digital, and IT services. They provide financial support and strategic guidance to the companies in their portfolio. Their focus is on small and mid-sized companies in Germany.

Transaction Team

Following transaction team facilitated the transaction.

About the sector


The German technology sector plays a significant role in the digital era. The industry is not only an important economic sector with an annual turnover of over EUR 280 bn, over one million jobs and a share of almost 7% of total economic output, but also a key driver of innovation that influences and promotes other sectors.

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