Form 4 Filing for PACCAR Inc

This filing details transactions made by Michael K. Walton, Vice President/General Counsel of PACCAR Inc. On September 2, 2026, Mr. Walton acquired 19.538 shares of Common Stock through the PACCAR Savings Investment Plan (SIP), reinvesting dividends. His post-transaction holdings in the SIP amount to 6869.883 shares. Additionally, he acquired 39.987 stock units from the PACCAR Deferred Compensation Plan (DCP), which are convertible to common stock. These units, held in a deferred phantom stock account, had dividends reinvested. His post-transaction holdings in the DCP are 13993.184 units. The filing also reports Mr. Walton's direct holdings of 2885.0 shares of Common Stock and various stock options and units held under the Long Term Incentive Plan (LTIP).