Kotte & Cie

Day-to-day management sits with Andrea Kotte. Sebastian Kotte serves as Managing Director and simultaneously sits on the board of Spiekermann & CO AG, which likely means that asset-management recommendations flow through that regulated entity. The firm presents itself as a coordinator of external advisors — banks, insurers, tax consultants — rather than an in-house asset manager, so final investment authority likely rests with each family.

The firm does not describe a proprietary sourcing channel. The Spiekermann & CO AG board seat held by Sebastian Kotte provides access to a German asset manager, and the firm’s own corporate filings show direct co-ownership of real estate with Hans-Heiner Müller’s Gemelo group. Deal flow likely originates through local developer relationships and the Osnabrück professional network, where Sebastian Kotte chairs the IHK regional committee.

It operates explicitly as a multi-family office, serving several high-net-worth families from its Osnabrück base. The firm’s own materials use the term ‘Multi Family Office’ and describe coordinating across multiple client households for reporting, administration, and succession planning.

The firm’s public description points mostly toward direct coordination of client wealth rather than a disclosed fund-commitment program. However, the board-level tie to Spiekermann & CO AG suggests that client capital can be directed into pooled fund vehicles through that relationship. The directly traceable investments are in German real estate held through Gemelo special-purpose companies.

Sebastian Kotte holds a board position at Spiekermann & CO AG, an Osnabrück-based asset manager. Meanwhile, Kotte & Cie principals share ownership of multiple Gemelo-branded real estate GmbHs with Hans-Heiner Müller, the founder of WM SE. This creates a tri-party relationship where the multi-family office, an external asset manager, and a set of co-owned property companies are linked through overlapping directors and shareholders.

There is no public evidence of a formal co-investment program with outside general partners. The only visible co-investing occurs inside the Gemelo real estate vehicles, where Kotte family entities and Hans-Heiner Müller’s interests sit alongside each other directly.

The associated entity Spiekermann & CO AG sponsors Stiftungsfonds Spiekermann & CO, a foundation vehicle, but there is no indication that Kotte & Cie itself runs a separate philanthropic arm. Any charitable activity appears routed through the Spiekermann structure rather than a dedicated Kotte foundation.