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 2008-04-30 4 P 0 L 25.208 59.80 A Common Stock 25.208 8221.232 D Phantom Stock 2008-05-15 4 P 0 L 24.432 61.93 A Common Stock 24.342 8245.574 D Phantom Stock 2008-05-31 4 P 0 L 22.456 67.13 A Common Stock 22.456 8268.030 D Phantom Stock 2008-06-15 4 P 0 L 23.309 64.67 A Common Stock 23.309 8291.340 D Phantom Stock 2008-06-30 4 P 0 L 25.909 58.18 A Common Stock 25.909 8317.249 D Phantom Stock 2008-07-15 4 P 0 L 28.076 53.69 A Common Stock 28.076 8345.325 D Phantom Stock 2008-07-31 4 P 0 L 30.040 50.180 A Common Stock 30.040 8375.365 D Phantom Stock 2008-08-15 4 P 0 L 31.524 47.820 A Common Stock 31.524 8406.889 D Phantom Stock 2008-08-31 4 P 0 L 30.088 50.100 A Common Stock 30.088 8436.977 D Phantom Stock 2008-09-15 4 P 0 L 34.020 44.310 A Common Stock 34.020 8470.997 D Phantom Stock 2008-09-30 4 P 0 L 33.588 44.880 A Common Stock 33.588 8504.585 D Phantom Stock 2008-10-15 4 P 0 L 51.874 29.060 A Common Stock 51.874 8556.459 D Phantom Stock 2008-10-31 4 P 0 L 40.742 37.000 A Common Stock 40.742 8597.201 D Phantom Stock 2008-11-15 4 P 0 L 53.136 28.370 A Common Stock 53.136 8650.337 D Phantom Stock 2008-11-30 4 P 0 L 53.266 28.300 A Common Stock 53.266 8703.603 D Phantom Stock 2008-12-15 4 P 0 L 61.578 24.480 A Common Stock 61.578 8765.181 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