Mark O'Neil is the President of Columbia Shipmanagement ltd (CSM) and future CEO of the intended merger between CSM and Marlow Navigation subject to regulatory approvals being obtained.

A lawyer by profession, Mr. O’Neil headed up international law firm Reed Smith LLP's German Shipping Team, and also co-lead the firm's Offshore Department. His clients included Ship Owners, Charterers, Insurers, Management Companies, Banks, Oil Companies and Offshore Contractors worldwide with a particular focus on the German, Scandinavian, Greek, Dutch, South American and Cypriot markets. Mr. O’Neil has been a senior Partner in Reed Smith LLP and (before that) Stephenson Harwood LLP for over 17 years.

With over 25 years' experience in shipping and offshore, Mr. O’Neil has hosted and/or chaired numerous seminars and conferences internationally.