X0206 3/A 2016-07-01 2016-07-11 0 0000708819 MCDERMOTT INTERNATIONAL INC MDR 0001678613 Leys Andrew 757 N. ELDRIDGE PARKWAY HOUSTON TX 77079 1 VP, Human Resources Common Stock 5996 D Common Stock 345 I 401K Plan Restricted Stock Units Common Stock 17804 D Restricted Stock Units Common Stock 29673 D Based upon units held in 401K Plan and the fair market value of Common Stock as of July 1, 2016. On March 5, 2015, the reporting person was granted 26,706 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date. Each restricted stock unit represents a contingent right to receive the value of one share of MDR common stock, with such restricted stock units to be paid, in the sole discretion of the Compensation Committee: (i) in shares of MDR common stock, (ii) cash equal to the fair market value of the shares of MDR common stock otherwise deliverable, or (iii) any combination thereof. On February 26, 2016 the reporting person was granted 29,673 restricted stock units, vesting in three equal annual installments beginning on the first anniversary of the grant date. This Form 3 Amendment is being filed solely to attach the power of attorney executed by the reporting person on June 29, 2016 which was not previously attached to the originally filed Form 3 due to a system error. /s/ Kimberly J. Wolford, by Power of Attorney 2017-09-08