X0306 4 2018-06-07 0001163739 NABORS INDUSTRIES LTD NBR 0001334321 Restrepo William J C/O NABORS CORPORATE SERVICES, INC. 515 W. GREENS RD., SUITE 1200 HOUSTON TX 77067 1 Chief Financial Officer Common Stock 2018-06-07 4 F 0 24888 7.25 D 1218835 D Reflects the number of shares surrendered on June 7, 2018 to satisfy the tax withholding on the vesting of 67,080 shares of the 201,238 performance shares originally issued on June 7, 2016. The remaining 42,192 vested shares were retained by the executive. /s/ Mark D. Andrews by Power of Attorney for William Restrepo 2018-06-11