X0306 4 2019-01-18 0 0000277135 W.W. GRAINGER, INC. GWW 0001688983 Robbins Paige K 100 GRAINGER PARKWAY LAKE FOREST IL 60045 0 1 0 0 Sr. VP Common Stock 2019-01-18 4 G 0 2058 0.00 D 12268 D Common Stock 2019-01-18 4 G 0 2058 0.00 A 2058 I Family Trust Common Stock 2019-01-22 4 G 0 3112 0.00 D 9156 D Common Stock 2019-01-22 4 G 0 3112 0.00 A 5170 I Family Trust Common Stock 2019-02-22 4 G 0 366 0.00 D 8790 D Common Stock 2019-02-22 4 G 0 366 0.00 A 5536 I Family Trust Common Stock 2020-02-25 4 G 0 716 0.00 D 8074 D Common Stock 2020-02-25 4 G 0 716 0.00 A 6252 I Family Trust Common Stock 2020-06-23 4 G 0 862 0.00 D 7212 D Common Stock 2020-06-23 4 G 0 862 0.00 A 7114 I Family Trust Common Stock 2022-07-28 4 M 0 2330 245.86 A 9542 D Common Stock 2022-07-28 4 S 0 2330 500.03 D 7212 D Common Stock 2022-09-16 5 G 0 E 2252 0.00 D 4960 D Common Stock 2022-09-16 5 G 0 E 2252 0.00 A 9366 I Family Trust Stock Option 245.86 2022-07-28 4 M 0 2330 0.00 D 2016-04-24 2023-04-23 Common Stock 2330 0 D Stock Option 248.22 2017-04-30 2024-04-29 Common Stock 2127 2127 D Stock Option 231.88 2018-04-01 2025-03-31 Common Stock 3122 3122 D Stock Option 234.38 2019-04-01 2026-03-31 Common Stock 3813 3813 D Stock Option 231.20 2020-04-03 2027-04-02 Common Stock 2814 2814 D Stock Option 276.64 2021-04-02 2028-04-01 Common Stock 3904 3904 D Stock Option 311.26 2029-03-31 Common Stock 2859 2859 D Reflects gifts to a family trust, which were not previously reported. The reporting person has voting and investment power with respect to the shares. Transaction pursuant to a previously adopted Rule 10b5-1 trading program. The reported transaction corrects an earlier Form 4 filed on July 28, 2022, which erroneously reported that only common stock was sold rather than an exercise of stock options followed by a sale of common stock. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $500.00 to $500.1950, 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 this footnote. Reflects gifts to a family trust. The reporting person has voting and investment power with respect to the shares. Reflects total number of shares held in the reporting person's family trust as of the date of this report, following the transactions reflected in footnotes 1 and 4 above. 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 J. Colin McGee, as attorney-in-fact 2022-09-16