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 2005-04-30 4 P 0 L 58.646 22.38 A Common Stock 58.646 1868.315 D Phantom Stock 2005-05-15 4 P 0 L 57.415 22.86 A Common Stock 57.415 1925.7300 D Phantom Stock 2005-05-31 4 P 0 L 62.849 25.06 A Common Stock 62.849 1988.579 D Phantom Stock 2005-06-15 4 P 0 L 53.728 25.65 A Common Stock 53.728 2042.307 D Phantom Stock 2005-06-30 4 P 0 L 50.462 27.31 A Common Stock 50.462 2092.770 D Phantom Stock 2005-07-15 4 P 0 L 50.150 27.48 A Common Stock 50.150 2142.920 D Phantom Stock 2005-07-30 4 P 0 L 50.041 27.54 A Common Stock 50.041 2192.961 D Phantom Stock 2005-08-15 4 P 0 L 48.526 28.4 A Common Stock 48.526 2241.486 D Phantom Stock 2005-08-31 4 P 0 L 415.408 29.79 A Common Stock 415.408 2656.894 D Phantom Stock 2005-08-31 4 P 0 L 80.249 29.79 A Common Stock 80.249 2737.143 D Phantom Stock 2005-09-15 4 P 0 L 51.001 30.33 A Common Stock 51.001 2788.145 D Phantom Stock 2005-09-30 4 P 0 L 47.935 32.27 A Common Stock 47.935 2836.080 D Phantom Stock 2005-10-15 4 P 0 L 53.048 29.16 A Common Stock 53.048 2889.128 D Phantom Stock 2005-10-31 4 P 0 L 54.200 28.54 A Common Stock 54.200 2943.328 D Phantom Stock 2005-11-15 4 P 0 L 48.874 31.65 A Common Stock 48.874 2992.203 D Phantom Stock 2005-11-30 4 P 0 L 46.341 33.38 A Common Stock 46.341 3038.544 D Phantom Stock 2005-12-15 4 P 0 L 48.385 31.97 A Common Stock 48.385 3086.929 D Phantom Stock 2005-12-31 4 P 0 L 52.224 29.62 A Common Stock 52.224 3139.153 D Phantom Stock 2006-01-15 4 P 0 L 48.249 32.06 A Common Stock 48.249 3187.402 D Phantom Stock 2006-01-31 4 P 0 L 47.218 32.76 A Common Stock 47.218 3234.621 D Phantom Stock 2006-02-15 4 P 0 L 53.730 28.79 A Common Stock 53.730 3288.350 D Phantom Stock 2006-02-28 4 P 0 L 56.414 27.42 A Common Stock 56.414 3344.765 D Phantom Stock 2006-03-15 4 P 0 L 57.935 26.7 A Common Stock 57.935 3402.700 D Phantom Stock 2006-03-31 4 P 0 L 55.643 27.8 A Common Stock 55.643 3458.343 D Phantom Stock 2006-04-15 4 P 0 L 58.285 26.54 A Common Stock 58.285 3516.628 D Phantom Stock 2006-04-30 4 P 0 L 56.455 27.4 A Common Stock 56.455 3573.083 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