X0303 5 2007-03-31 0 0 1 0001030749 GULFMARK OFFSHORE INC GLF 0001378782 Ross Rex X1 1 0 0 0 Phantom Stock 2007-03-31 4 P 0 L 31.572 43.65 A Common Stock 31.572 31.572 D Phantom Stock 2007-05-15 4 P 0 L 27.420 50.260 A Common Stock 27.420 58.992 D Phantom Stock 2007-06-30 4 P 0 L 134.530 51.220 A Common Stock 134.530 193.522 D Phantom Stock 2007-07-31 4 P 0 L 29.334 46.980 A Common Stock 29.334 222.856 D Phantom Stock 2007-09-15 4 P 0 L 30.025 45.900 A Common Stock 30.025 252.881 D Phantom Stock 2007-09-30 4 P 0 L 141.607 48.660 A Common Stock 141.607 394.488 D Phantom Stock 2007-11-30 4 P 0 L 62.022 44.440 A Common Stock 62.022 456.510 D Phantom Stock 2007-12-31 4 P 0 L 147.268 46.790 A Common Stock 147.268 603.778 D Phantom Stock 2008-02-29 4 P 0 L 27.203 50.660 A Common Stock 27.203 630.981 D Phantom Stock 2008-03-31 4 P 0 L 176.295 54.720 A Common Stock 176.295 807.276 D Phantom Stock 2008-04-30 4 P 0 L 23.046 59.800 A Common Stock 23.046 830.322 D Phantom Stock 2008-05-15 4 P 0 L 44.505 61.930 A Common Stock 44.505 874.827 D Phantom Stock 2008-05-31 4 P 0 L 20.530 67.130 A Common Stock 20.530 895.357 D Phantom Stock 2008-06-30 4 P 0 L 138.176 58.180 A Common Stock 138.176 1033.533 D Phantom Stock 2008-09-15 4 P 0 L 62.204 44.310 A Common Stock 62.204 1095.737 D Phantom Stock 2008-09-30 4 P 0 L 179.123 44.880 A Common Stock 179.123 1274.860 D Phantom Stock 2008-12-15 4 P 0 L 112.592 24.480 A Common Stock 112.592 1387.452 D Phantom Stock 2008-12-31 4 P 0 L 337.917 23.790 A Common Stock 337.917 1725.369 D Phantom Stock 2009-02-28 4 P 0 L 65.971 20.890 A Common Stock 65.971 1791.340 D Phantom Stock 2009-03-31 4 P 0 L 452.444 23.860 A Common Stock 452.444 2243.784 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/ Rex Ross 2009-04-16