W.W. GRAINGER, INC.

On June 9, 2026, the Novich Family Trust, a family trust under which Neil Novich, amember 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.

None of the Company's other directors or officers adopted, modified, orterminated a Rule 10b5-1 trading arrangement or a non-Rule 10b5-1 trading arrangement during the Company's quarter ended June 30, 2026.