PCAR: Financial results

Item 2.02 Results of Operations and Financial Condition On July 28, 2026 PACCAR Inc (the “Registrant”) issued a press release announcing its financial results for the second quarter of 2026 and announcing that it would hold a conference call with securities analysts to discuss second quarter 2026 earnings to be held that same day as more fully described in the press release attached as Exhibit 99.1 to this report. The information in this Current Report on Form 8-K, including Exhibit 99.1 hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference in any filing or other document pursuant to the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing or document. Item 9.01 Financial Statements and Exhibits (d) Exhibits. The following is furnished as an Exhibit to this report. Exhibit Number Description 99.1 Press release issued July 28, 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. PACCAR Inc Date: July 28, 2026 By: /s/ B. J. Poplawski B. J. Poplawski Senior Vice President and Chief Financial Officer