X0306 4 2013-03-28 0 0001030749 GULFMARK OFFSHORE INC GLF 0001206113 STREETER BRUCE A 10111 RICHMOND AVE, STE.340 HOUSTON TX 77042 1 1 0 0 President & CEO PHANTOM STOCK 2013-03-28 4 A 0 472.70 38.96 A COMMON STOCK 472.70 75834.66 D Phantom Stock units acquired through the reinvestment of dividends on March 28, 2013 and credited under the Company's Executive Nonqualified Excess Plan (the "Plan"). Participants are always 100% vested in their contribution to the Plan, which may be funded either through payroll deductions or reinvestment of dividends. Employer contributions vest according to the provision of the Plan, which is generally based on years of service (20% per year of credited service). A participant is 100% vested after 5 years of credited service. /s/ Bruce Streeter 2013-04-01