Form 4 Filing for PACCAR INC

This filing details transactions by PACCAR INC executive Mark C. Pigott. On September 2, 2026, 501.274 shares of Common Stock were acquired under the PACCAR Savings Investment Plan (SIP) at a price of $122.13 per share, bringing the post-transaction shares to 176,255.434. Following this, Pigott directly owns 5,082,345 shares of Common Stock. Additionally, he indirectly owns 424,920 shares through his wife and children. The dividend reinvestment on SIP shares is noted under footnote F1.