After the acquisition of bank MeesPierson by the Fortis Group, he switched to the International Clients Department of Bank Insinger de Beaufort, first in Amsterdam, later in Luxembourg.
Keimpe founded in 2010 together with his partners Christian Tailleur and James Body the predecessor of what today is LGL Corporate Services (Luxembourg) S.A..
Keimpe has a strong background in taxation and structured wealth and has a strong International back ground. He served and serves on the boards of companies owned by UHNW individuals, as well as Luxembourg subsidiaries of stock exchange quoted companies and investment funds.