X0303 5 2008-12-31 0 0 1 0001030749 GULFMARK OFFSHORE INC GLF 0001452077 Rubio Samuel R X1 0 1 0 0 Controller & CAO Phantom Stock 2008-05-31 4 P 0 L 15.908 67.130 A Common Stock 15.908 3222.238 D Phantom Stock 2008-06-15 4 P 0 20.183 64.670 A Common Stock 20.183 3242.421 D Phantom Stock 2008-06-30 4 P 0 19.715 58.180 A Common Stock 19.715 3262.136 D Phantom Stock 2008-07-15 4 P 0 21.364 53.690 A Common Stock 21.364 3283.500 D Phantom Stock 2008-07-31 4 P 0 21.745 50.180 A Common Stock 21.745 3305.245 D Phantom Stock 2008-08-15 4 P 0 22.818 47.820 A Common Stock 22.818 3328.063 D Phantom Stock 2008-08-31 4 P 0 21.779 50.100 A Common Stock 21.779 3349.842 D Phantom Stock 2008-09-15 4 P 0 24.625 44.310 A Common Stock 24.625 3374.467 D Phantom Stock 2008-09-30 4 P 0 24.312 44.880 A Common Stock 24.312 3398.779 D Phantom Stock 2008-10-15 4 P 0 37.548 29.060 A Common Stock 37.548 3436.327 D Phantom Stock 2008-10-31 4 P 0 29.490 37.000 A Common Stock 29.490 3465.817 D Phantom Stock 2008-11-15 4 P 0 38.461 28.370 A Common Stock 38.461 3504.278 D Phantom Stock 2008-11-30 4 P 0 38.556 28.300 A Common Stock 38.556 3542.834 D Phantom Stock 2008-12-15 4 P 0 53.795 24.480 A Common Stock 53.795 3596.629 D Phantom Stock 2008-12-31 4 P 0 55.356 23.790 A Common Stock 55.356 3651.985 D Phantom Stock 2009-01-15 4 P 0 62.860 26.100 A Common Stock 62.860 3714.845 D Phantom Stock 2009-01-31 4 P 0 68.531 23.940 A Common Stock 68.531 3783.376 D Phantom Stock 2009-02-15 4 P 0 62.644 26.190 A Common Stock 62.644 3846.020 D Phantom Stock 2009-02-28 4 P 0 78.537 20.890 A Common Stock 78.537 3924.557 D Phantom Stock 2009-03-15 4 P 0 87.501 18.750 A Common Stock 87.501 4012.058 D Phantom Stock 2009-03-15 4 P 0 1333.330 18.750 A Common Stock 1333.330 5345.388 D Phantom Stock 2009-03-31 4 P 0 68.761 23.860 A Common Stock 68.761 5414.149 D On reviewing the Section 16 reporting requirements relating to GulfMark Offshore, Inc.'s Executive Nonqualified Excess Plan, it was determined that the phantom stock units created by the deferral of compensation by both officers and directors should have been reported as a derivative security by the officer/director once the phantom stock unit was allocated to his account. This filing reports all transactions related to the phantom stock units in the plan allocated to the individual from his point of entry into the plan through March 31, 2009. Each phantom stock unit is the economic equivalent of one share of common stock. Subject to the provisions of the plan, the phantom stock units become payable only in common stock upon the officer/director's termination of service." /s/ Samuel Rubio 2009-04-16