X0306 4 2016-02-22 0 0000277135 GRAINGER W W INC GWW 0001618135 Lomax William 100 GRAINGER PARKWAY LAKE FOREST IL 60045 0 1 0 0 Vice President and Controller Common Stock 2016-02-22 4 S 0 100 221.4832 D 5691 D Common Stock 2016-02-22 4 S 0 100 221.4869 D 5591 D Common Stock 2016-02-22 4 S 0 900 221.49 D 4691 D Common Stock 2016-02-22 4 S 0 246 221.53 D 4445 D Common Stock 2016-02-22 4 S 0 121 221.59 D 4324 D Common Stock 2016-02-22 4 S 0 100 221.62 D 4224 D Common Stock 2016-02-22 4 S 0 100 221.65 D 4124 D Common Stock 2016-02-22 4 S 0 102 221.66 D 4022 D Common Stock 2016-02-22 4 S 0 100 221.71 D 3922 D Common Stock 2016-02-22 4 S 0 1000 221.92 D 2922 D Common Stock 2016-02-22 4 S 0 100 222.05 D 2822 D Common Stock 2016-02-22 4 S 0 100 222.09 D 2722 D This is the third of three Forms 4 to report all February 22, 2016 transactions for the reporting person. Noni Ellison Southall, as attorney-in-fact 2016-02-23