X0306 4 2015-05-01 0 0000085408 ROWAN COMPANIES PLC RDC 0001180365 RALLS W MATT 2800 POST OAK BLVD SUITE 5450 HOUSTON TX 77056 1 1 0 0 Executive Chairman Ordinary Shares 2015-05-01 4 A 0 140778 0.00 A 490392 D Represents restricted share units which may be settled soley in ordinary shares upon vesting. The restricted share units vest on the earlier to occur of (i) the annual meeting of the Company's shareholders occurring during calendar year 2016 or (ii) the second (2nd) anniversary of the grant date. Includes 256,122 restricted share units held by the reporting person. /s/ Melanie M. Trent, attorney-in-fact 2015-05-05