X0306 4 2017-12-31 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 2017-12-31 4 F 0 21280 6.83 D 940414 D Reflects the number of shares surrendered to satisfy the tax withholding on the vesting of 53,518 shares of restricted stock on December 31, 2017. The remaining 32,238 shares were retained by the executive. /s/ Mark D. Andrews by Power of Attorney for William Restrepo 2018-01-03