X0609 4 2026-08-19 0 0000049826 ILLINOIS TOOL WORKS INC ITW 0001307581 SANTI ERNEST SCOTT false ILLINOIS TOOL WORKS INC. 155 HARLEM AVENUE GLENVIEW IL 60025 1 0 0 0 0 Common Stock 2026-08-19 4 M 0 41431 187.86 A 307719 D Common Stock 2026-08-19 4 S 0 22471 286.37 D 285248 D Common Stock 2026-08-19 4 S 0 8142 287.35 D 277106 D Common Stock 2026-08-19 4 S 0 8928 288.22 D 268178 D Common Stock 2026-08-19 4 S 0 1890 289.19 D 266288 D Employee Stock Option 187.86 2026-08-19 4 M 0 41431 0 D 2021-02-14 2030-02-14 Common Stock 41431 124295 D This transaction was executed at multiple prices ranging from $285.80 to $286.80. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, Illinois Tool Works Inc. or a shareholder of Illinois Tool Works Inc. full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed at multiple prices ranging from $286.81 to $287.81. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, Illinois Tool Works Inc. or a shareholder of Illinois Tool Works Inc. full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed at multiple prices ranging from $287.82 to $288.79. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, Illinois Tool Works Inc. or a shareholder of Illinois Tool Works Inc. full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed at multiple prices ranging from $288.92 to $289.45. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, Illinois Tool Works Inc. or a shareholder of Illinois Tool Works Inc. full information regarding the number of shares and prices at which the transaction was effected. Includes 6,937 shares of deferred stock granted under the ITW Directors' Deferred Fee Plan as of August 19, 2026. Stock options vest in four (4) equal annual installments beginning on February 14, 2020 (grant date), and became fully exercisable on February 14, 2024. /s/ Anna Oliveira, Attorney-in-Fact for E. Scott Santi 2026-08-21