X0306 4 2013-03-27 0 0001030749 GULFMARK OFFSHORE INC GLF 0001488598 Darling David E 10111 RICHMOND AVE, STE.340 HOUSTON TX 77042 0 1 0 0 SVP- Human Resources Common Stock 2013-03-27 4 F 0 1765 39.183 D 15209 D Under the terms of the GulfMark 1997 Incentive Equity Plan and 2010 Omnibus Equity Incentive Plan, shares were sold to the Company to satisfy the tax obligation on restricted shares which restrictions lapsed. /s/ David Darling 2013-03-29