W.w. Grainger (GWW) 4: Watson Lucas E transacted shares; Watson Lucas E bought 12… (Sep 1, 2026)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-09-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: W.W. GRAINGER, INC. (GWW) CIK: 0000277135 --- Reporting Owner --- Name: Watson Lucas E CIK: 0001725078 Role: Director --- Derivative Transactions --- [Transaction #1] Security: Deferred Stock Units Date: 2026-09-01 | Code: A (Grant or award) Shares: +12 | Price: $1,309.49 Shares Owned After: 6,023 | Ownership: D (Direct) Footnotes: [F2] 1-for-1 [F3] The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director. [F3] The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director. --- Holdings --- [Holding #1] Security: Common Stock Ownership: I (Indirect) Footnotes: [F1] Held in the Lucas E. Watson Trust -2025, of which the reporting person is the trustee. --- Footnotes (Complete Index) --- F1: Held in the Lucas E. Watson Trust -2025, of which the reporting person is the trustee. F2: 1-for-1 F3: The deferred stock units are expected to settle in shares of common stock on a one-for-one basis following end of service as a director. --- Signature --- /s/ /s/ Cherita Thomas, by POA from Lucas E. Watson, Director (2026-09-01)