Advised CallOne GmbH on the sale to Rigeto Unternehmerkapital GmbH
Mr. Scheufen successfully advised the shareholder on the transaction.






Rigeto Unternehmerkapital GmbH is a private equity firm based in Munich, Germany. It specializes in acquisitions and investments in complementary companies that offer software development, digital, and IT services. It provides financial support and strategic advice to the companies in its portfolio. Its focus is on small and medium-sized companies in Germany.

CallOne GmbH is a German telecommunications company based in Hamburg, Germany. It is an integrated service provider offering solutions for voice, messaging, and data services. It has international carriers that provide access to most markets around the world and offers a wide range of features, including call forwarding services, international roaming, and virtual phone numbers. CallOne GmbH also offers various value-added services, such as call recording, voicemail, and voice-to-text conversion.
Involved team members
Competence and character – the foundation of our team.

Jannis Scheufen
Managing Partner
An analytically minded strategist with technical excellence. With precise judgment, deep technical expertise, and decisive execution, he leads complex transactions from analysis through to successful closing - always with a pragmatic focus on solutions that create real value for investors.

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