X0303 5 2008-12-31 0 0 1 0001030749 GULFMARK OFFSHORE INC GLF 0001188799 BUTTERS DAVID J X1 1 0 0 0 Phantom Stock 2007-08-31 4 P 0 L 40.894 45.850 A Common Stock 40.894 9953.960 D Phantom Stock 2007-09-15 4 P 0 L 7.353 45.9 A Common Stock 7.353 9961.313 D Phantom Stock 2007-09-30 4 P 0 L 80.148 48.660 A Common Stock 80.148 10041.461 D Phantom Stock 2007-10-31 4 P 0 L 40.253 46.580 A Common Stock 40.253 10081.714 D Phantom Stock 2007-11-30 4 P 0 L 49.786 44.44 A Common Stock 49.786 10131.5 D Phantom Stock 2007-12-31 4 P 0 L 83.352 46.79 A Common Stock 83.352 10214.852 D Phantom Stock 2008-01-31 4 P 0 L 52.905 41.82 A Common Stock 52.905 10267.757 D Phantom Stock 2008-02-29 4 P 0 L 43.674 50.66 A Common Stock 43.674 10311.431 D Phantom Stock 2008-03-31 4 P 0 L 77.439 54.72 A Common Stock 77.439 10388.87 D Phantom Stock 2008-04-30 4 P 0 L 36.998 59.800 A Common Stock 36.998 10425.868 D Phantom Stock 2008-05-15 4 P 0 L 5.450 61.930 A Common Stock 5.450 10431.318 D Phantom Stock 2008-05-31 4 P 0 L 32.958 67.130 A Common Stock 32.958 10464.276 D Phantom Stock 2008-06-30 4 P 0 L 75.736 58.18 A Common Stock 75.736 10540.012 D Phantom Stock 2008-07-31 4 P 0 L 37.365 50.180 A Common Stock 37.365 10577.377 D Phantom Stock 2008-08-31 4 P 0 L 37.425 50.1 A Common Stock 37.425 10614.802 D Phantom Stock 2008-09-15 4 P 0 L 7.617 44.31 A Common Stock 7.617 10622.419 D Phantom Stock 2008-09-30 4 P 0 L 98.178 44.88 A Common Stock 98.178 10720.597 D Phantom Stock 2008-10-31 4 P 0 L 50.676 37 A Common Stock 50.676 10771.273 D Phantom Stock 2008-11-30 4 P 0 L 66.254 28.3 A Common Stock 66.254 10837.527 D Phantom Stock 2008-12-15 4 P 0 L 13.787 24.480 A Common Stock 13.787 10851.314 D Phantom Stock 2008-12-31 4 P 0 L 185.215 23.790 A Common Stock 185.215 11036.529 D Phantom Stock 2009-01-31 4 P 0 L 78.321 23.94 A Common Stock 78.321 11114.850 D Phantom Stock 2009-02-15 4 P 0 L 12.887 26.190 A Common Stock 12.887 11127.737 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/ David J. Butters 2009-04-16