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About us

Our quality promise

Why people have trusted us for years? This is mainly because we are very close to our clients. We have been supporting you in hedging risks as a long-standing partner since 1983. Our main priority is individual consulting and providing you with commercial and industrial risks coverage and value protection. As a client you are the central point of focus of our daily work. With that we ensure a sustainable protection so that you can take care of your business without worries.


1983 Foundation of the ASSECURA Otto + Niesen Versicherungsmakler GmbH by the families Otto and Niesen

Back then, the families Otto and Niesen laid the foundation for our Current insurance broker company. Ever since the eighties the company has been fostering a close relationship with its clients. Back then as well as today, this has been building up the basis of trust, which is the foundation for our work.

1991 Change of name and acquisition of the ASSECURA Versicherungsmakler GmbH by Ralf Johnen

The acquisition by Ralf Johnen in the early nineties has been an important milestone in the chronicles of our company. A breath of fresh air, modernization and adjusting the company structures according to the needs of the time keep our company young and efficient.

2020 Acquisition of the ASSECURA Versicherungsmakler GmbH by Peter Sitt and Marco Staps and simultaneous change of name to Sitt + Co. GmbH

Now we lay the foundation for the future. In the last couple of years, we have finished the constant development and adjustment of the processes to the digitalization. Today we want to give our modern orientation a facelift with the brand Sitt +Co. The new brand brings our philosophy as well as our company values together and represents excellent competence in individual risk coverage for companies.


+ Close personal relationships

+ Individual risk coverage

+ Transparent processes

+ Sustainable concepts