JUNE 3, 2013 — GulfMark Offshore, Inc. (NYSE:GLF) has appointed James (Jay) M. Mitchell as Executive Vice President and Chief Financial Officer (CFO). He replaces Quintin Kneen who assumes the role of President and Chief Executive Officer (CEO) on June 4th.

Mr. Mitchell comes to GulfMark with over two decades of energy background, including past executive roles as a private company CEO and a public company CFO. His expertise includes strategic planning, mergers and acquisitions, finance, accounting, treasury, taxation, risk management and investor relations. His most recent experience was as CEO of the privately held Flex Energy. Previously, Mr. Mitchell worked as Senior Vice President & CFO of T-3 Energy Services, a publicly traded company, until its successful sale in 2011.

Quintin Kneen commented on Jay's appointment, "I am pleased to welcome Jay aboard. He is a seasoned executive who brings fast-paced energy and good judgment, and will fit well with the entire GulfMark team. He has successfully worked with and led growth-oriented, value-focused teams, and we are excited about the potential he brings to GulfMark."