Hans-Ole Jochumsen, Nasdaq OMX’s top executive in Europe, is known as the man to go to when managing an exchange merger.

The finance veteran was on the management board of Danish lender GiroBank when it merged with rival Sparekassen Bikuben at the start of his career. He spearheaded the tie-up between the Copenhagen and Stockholm exchanges in 2005, and was a member of the executive team of Nordic-based OMX Group during its merger with Nasdaq six years ago.