X0306 5 2016-01-15 0 0 0001030749 GULFMARK OFFSHORE INC GLF 0001391071 Kneen Quintin 842 W. SAM HOUSTON PARKWAY N. STE 400 HOUSTON TX 77024 1 President & CEO Phantom Stock 2016-01-15 5 A 0 1695.48 2.82 A Common Stock 1695.48 47343.88 D Phantom Stock 2016-01-29 5 A 0 1261.54 3.79 A Common Stock 1261.54 48605.42 D Phantom Stock 2016-02-12 5 A 0 1557.41 3.07 A Common Stock 1557.41 50162.83 D Phantom Stock 2016-02-29 5 A 0 1331.82 3.59 A Common Stock 1331.82 51494.65 D Phantom Stock 2016-03-15 5 A 0 736.71 6.49 A Common Stock 736.71 52231.36 D Phantom Stock 2016-03-31 5 A 0 774.92 6.17 A Common Stock 774.92 53006.28 D Phantom Stock 2016-04-15 5 A 0 898.73 5.32 A Common Stock 898.73 53905.01 D Phantom Stock 2016-04-29 5 A 0 705.20 6.78 A Common Stock 705.20 54610.21 D Phantom Stock 2016-05-13 5 A 0 1028.23 4.65 A Common Stock 1028.23 55638.44 D Phantom Stock 2016-05-31 5 A 0 1475.69 3.24 A Common Stock 1475.69 57114.13 D Phantom Stock 2016-06-15 5 A 0 1292.23 3.70 A Common Stock 1292.23 58406.36 D Phantom Stock 2016-06-30 5 A 0 1527.56 3.13 A Common Stock 1527.56 59933.92 D Phantom Stock 2016-07-15 5 A 0 1398.03 3.42 A Common Stock 1398.03 61331.95 D Phantom Stock 2016-07-29 5 A 0 1648.71 2.90 A Common Stock 1648.71 62980.66 D Phantom Stock 2016-08-15 5 A 0 1797.46 2.66 A Common Stock 1797.46 64778.12 D Phantom Stock 2016-08-31 5 A 0 2223.84 2.15 A Common Stock 2223.84 67001.96 D Phantom Stock 2016-09-15 5 A 0 2439.41 1.96 A Common Stock 2439.41 69441.37 D Phantom Stock 2016-09-30 5 A 0 2845.98 1.68 A Common Stock 2845.98 72287.35 D Phantom Stock 2016-10-14 5 A 0 3187.50 1.50 A Common Stock 3187.50 75474.85 D Phantom Stock 2016-10-31 5 A 0 4157.61 1.15 A Common Stock 4157.61 79632.46 D Phantom Stock 2016-11-15 5 A 0 3541.67 1.35 A Common Stock 3541.67 83174.13 D Phantom Stock 2016-11-30 5 A 0 3825 1.25 A Common Stock 3825 86999.13 D Phantom Stock 2016-12-15 5 A 0 2915.40 1.64 A Common Stock 2915.40 89914.53 D Phantom Stock 2016-12-30 5 A 0 2732.14 1.75 A Common Stock 2732.14 92646.67 D Phantom Stock units credited under the Company's Executive Nonqualified Excess Plan (the "Plan"). Participants are always 100% vested in their contributions to the Plan. Employer contributions vest according to the provision of the Plan, which is generally based on years of service (20% per year of credited service). A participant is 100% vested after 5 years of credited service. /s/ Quintin Kneen 2017-01-12