X0306 4 2023-02-07 0 0000277135 W.W. GRAINGER, INC. GWW 0001726862 Carroll Kathleen S 100 GRAINGER PARKWAY LAKE FOREST IL 60045 0 1 0 0 SVP & Chief HR Officer Common Stock 2023-02-07 4 M 0 1690 311.26 A 4965 D Common Stock 2023-02-07 4 S 0 890 670.35 D 4075 D Common Stock 2023-02-07 4 S 0 500 672.454 D 3575 D Common Stock 2023-02-07 4 S 0 300 673.6604 D 3275 D Stock Option 311.26 2023-02-07 4 M 0 1690 0.00 D 2029-03-31 Common Stock 1690 0 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $670.00 to $670.89, inclusive. The reporting person undertakes to provide W.W. Grainger, Inc., any security holder of W.W. Grainger, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (1), (2), and (3). The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $672.07 to $672.99, inclusive. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $673.45 to $674.0513, inclusive. The stock option fully vested in three years, where 1/3 vested on April 1, 2020, 1/3 vested on April 1, 2021, and the remainder vested on April 1, 2022. Exhibits: Exhibit 24 - Power of Attorney John L. Howard, By POA From Kathleen S. Carroll, SVP & CHRO 2023-02-08