Mario Leißner

Manager and Entrepreneur for 22 Years

Management Services

Interim Management
Supervisory Board Membership
Advisory Board Membership

Appointing Corporate Bodies

Capital Investment Companies
Fund Managers and Initiators
Asset Managers
Institutional Investors


Based upon more than 22 years of top level management experience both in the fund industry and in a law firm as well as many years of successful entrepreneurship, Mario Leissner is taking on selected interim management mandates as well as mandates on advisory and supervisory boards from corporate bodies seeking to rely on high-end legal skills and deep industry experience and to enjoy participating in an impressive network ready to be opend for convincing business cases.


It is being safeguarded for all mandates not to create, or to properly deal with, conflicts of interest and to comply with the strictest ethical and governance rules applicable.

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