O'Regan joins from Fidelity Investments and brings over two decades of industry experience to his new role. His hiring is the latest in a series of initiatives to expand the wealth management network of Mariner, which began early this year with the takeover of CBIZ Wealth Management's advisory unit. That acquisition extended Mariner's reach into cities such as Los Angeles, New York, Philadelphia, San Diego and Cumberland.

Mariner Wealth Advisors provides wealth planning, asset management and family office management and has around $8 billion in assets under management.