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 2007-05-15 4 P 0 L 23.596 50.260 A Common Stock 23.596 2324.321 D Phantom Stock 2007-05-31 4 P 0 26.783 50.230 A Common Stock 26.783 2351.104 D Phantom Stock 2007-06-15 4 P 0 24.758 51.120 A Common Stock 24.758 2375.862 D Phantom Stock 2007-06-30 4 P 0 24.710 51.220 A Common Stock 24.710 2400.572 D Phantom Stock 2007-07-15 4 P 0 18.722 57.040 A Common Stock 18.722 2419.294 D Phantom Stock 2007-07-31 4 P 0 22.731 46.980 A Common Stock 22.731 2442.025 D Phantom Stock 2007-08-15 4 P 0 24.199 44.130 A Common Stock 24.199 2466.224 D Phantom Stock 2007-08-31 4 P 0 23.292 45.850 A Common Stock 23.292 2489.516 D Phantom Stock 2007-09-15 4 P 0 23.266 45.900 A Common Stock 23.266 2512.782 D Phantom Stock 2007-09-30 4 P 0 21.947 48.660 A Common Stock 21.947 2534.729 D Phantom Stock 2007-10-15 4 P 0 20.592 51.860 A Common Stock 20.592 2555.321 D Phantom Stock 2007-10-31 4 P 0 22.927 46.580 A Common Stock 22.927 2578.248 D Phantom Stock 2007-11-15 4 P 0 24.641 43.340 A Common Stock 24.641 2602.889 D Phantom Stock 2007-11-30 4 P 0 24.031 44.440 A Common Stock 24.031 2626.920 D Phantom Stock 2007-12-15 4 P 0 24.299 43.950 A Common Stock 24.299 2651.219 D Phantom Stock 2007-12-31 4 P 0 22.823 46.790 A Common Stock 22.823 2674.042 D Phantom Stock 2008-01-15 4 P 0 24.494 43.600 A Common Stock 24.494 2698.536 D Phantom Stock 2008-01-31 4 P 0 25.536 41.820 A Common Stock 25.536 2724.072 D Phantom Stock 2008-02-15 4 P 0 25.258 42.280 A Common Stock 25.258 2749.330 D Phantom Stock 2008-02-29 4 P 0 21.080 50.660 A Common Stock 21.080 2770.410 D Phantom Stock 2008-03-15 4 P 0 20.368 52.430 A Common Stock 20.368 2790.778 D Phantom Stock 2008-03-31 4 P 0 362.170 54.720 A Common Stock 362.170 3152.948 D Phantom Stock 2008-04-15 4 P 0 18.280 58.420 A Common Stock 18.280 3171.228 D Phantom Stock 2008-04-30 4 P 0 17.858 59.800 A Common Stock 17.858 3189.086 D Phantom Stock 2008-05-15 4 P 0 17.244 61.930 A Common Stock 17.244 3206.330 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