X0303 5 2008-12-31 0 0 1 0001030749 GULFMARK OFFSHORE INC GLF 0001286202 MASHINSKI CARLA S X1 0 1 0 0 CAO Phantom Stock 2007-04-17 4 P 0 L 723.008 46.68 A Common Stock 723.008 6783.026 D Phantom Stock 2007-04-30 4 P 0 L 35.230 47.9 A Common Stock 35.230 6818.256 D Phantom Stock 2007-05-15 4 P 0 L 33.576 50.260 A Common Stock 33.576 6851.832 D Phantom Stock 2007-05-31 4 P 0 L 33.596 50.23 A Common Stock 33.596 6885.428 D Phantom Stock 2007-06-15 4 P 0 L 42.914 51.12 A Common Stock 42.914 6928.342 D Phantom Stock 2007-06-30 4 P 0 L 34.923 51.22 A Common Stock 34.923 6963.265 D Phantom Stock 2007-07-15 4 P 0 L 25.335 57.04 A Common Stock 25.335 6988.600 D Phantom Stock 2007-07-31 4 P 0 L 30.764 46.98 A Common Stock 30.764 7019.364 D Phantom Stock 2007-08-15 4 P 0 L 32.751 44.13 A Common Stock 32.751 7052.115 D Phantom Stock 2007-08-31 4 P 0 L 31.522 45.85 A Common Stock 31.522 7083.637 D Phantom Stock 2007-09-15 4 P 0 L 31.488 45.9 A Common Stock 31.488 7115.125 D Phantom Stock 2007-09-30 4 P 0 L 29.702 48.66 A Common Stock 29.702 7144.827 D Phantom Stock 2007-10-15 4 P 0 L 27.870 51.86 A Common Stock 27.870 7172.697 D Phantom Stock 2007-10-31 4 P 0 L 31.028 46.58 A Common Stock 31.028 7203.725 D Phantom Stock 2007-11-15 4 P 0 L 33.348 43.34 A Common Stock 33.348 7237.073 D Phantom Stock 2007-11-30 4 P 0 L 32.522 44.44 A Common Stock 32.522 7269.595 D Phantom Stock 2007-12-15 4 P 0 L 40.655 43.95 A Common Stock 40.655 7310.250 D Phantom Stock 2007-12-31 4 P 0 L 38.231 46.79 A Common Stock 38.231 7348.481 D Phantom Stock 2008-01-15 4 P 0 L 33.150 43.6 A Common Stock 33.150 7381.631 D Phantom Stock 2008-01-31 4 P 0 L 34.560 41.82 A Common Stock 34.560 7416.191 D Phantom Stock 2008-02-15 4 P 0 L 34.184 42.28 A Common Stock 34.184 7450.375 D Phantom Stock 2008-02-29 4 P 0 L 28.530 50.66 A Common Stock 28.530 7478.905 D Phantom Stock 2008-03-15 4 P 0 L 27.566 52.43 A Common Stock 27.566 7506.471 D Phantom Stock 2008-03-31 4 P 0 L 663.749 54.72 A Common Stock 663.749 8170.220 D Phantom Stock 2008-04-15 4 P 0 L 25.804 58.42 A Common Stock 25.804 8196.024 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/ Carla S. Mashinski 2009-04-16