GWWW. W. Grainger

On June 9, 2026, the Novich Family Trust, a family trust under which Neil Novich, a member of the Company’s Board of Directors, serves as co-trustee and beneficiary, adopted a written trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The trading arrangement provides for the sale of shares issuable upon the settlement of 33,644 deferred stock units previously granted to Mr. Novich and held by the Novich Family Trust, plus any additional deferred stock units credited to Mr. Novich’s account prior to the date of settlement. The aggregate number of shares to be sold under the arrangement will be determined at the time of settlement and will exclude shares withheld to satisfy transaction costs and applicable income tax withholding obligations, if any. The trading arrangement is a multi-trade trading plan and will expire on November 5, 2027, or earlier if all shares subject to the arrangement have been sold.

On December 23, 2025, Deidra Merriwether, Grainger’s Senior Vice President and Chief Financial Officer, adopted a written plan for the (i) exercise of options and sale of shares received, and (ii) sale of shares received pursuant to the vesting of equity awards on April 1, 2026. The plan covers an aggregate of 2,339 options and excludes shares withheld by the financial advisor to satisfy transaction costs and income tax withholding obligations in connection with the net settlement of the options and the underlying shares. The number of shares subject to the plan upon the vesting of equity awards, which excludes shares withheld by the Company to satisfy income tax withholding obligations in connection with the net settlement of the respective equity award, consists of 1,313 shares and shares issued upon the vesting of performance share units, the number of which will be determined based on the achievement of applicable performance conditions. The plan is a multi-trade plan intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) and will expire on December 31, 2026, or earlier if all shares subject to the plan have been sold.

On June 17, 2024, D.G. Macpherson, Grainger’s Chief Executive Officer, adopted a written plan for the exercise of options and sale of shares received. The aggregate number of options subject to the plan is 46,063 and excludes shares withheld by the financial advisor to satisfy transaction costs and income tax withholding obligations in connection with the net settlement of the options and shares. The plan is a single-trade plan, is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) and will expire on December 12, 2024, or any earlier date on which all of the shares have been sold

On June 6, 2024, Deidra C. Merriwether, Grainger’s Chief Financial Officer, adopted a written plan for the sale of shares received pursuant to the vesting of equity awards on November 1, 2024 and April 1, 2025. The aggregate number of shares subject to the plan is 4,675 and excludes shares withheld by the Company to satisfy income tax withholding obligations in connection with the net settlement of such equity award. The plan is a multi-trade plan, is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) and will expire on September 30, 2025, or any earlier date on which all of the shares have been sold.