Autos & Transportation Equipment: Insider trading policies (Item 408(b))

The Company maintains insider trading policies and procedures governing the purchase and sale of the Company’s securities by directors, officers and employees that are reasonably designed to promote compliance with applicable insider trading laws, rules and regulations and Nasdaq listing standards. The Company’s insider trading policies and procedures are included as Exhibit 19 of this Form 10-K.

ITEM 11. EXECUTI VE COMPENSATION.

The following information is included in the proxy statement for the annual stockholders meeting of April 28, 2026 and is incorporated herein by reference:

Compensation of Directors is included under the caption “COMPENSATION OF DIRECTORS.”

Compensation of Executive Officers and Related Matters is included under the caption “COMPENSATION OF EXECUTIVE OFFICERS.”

Compensation Committee Report is under the caption “COMPENSATION COMMITTEE REPORT.”

ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWN ERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS.

Stock ownership information is included under the captions “STOCK OWNERSHIP OF CERTAIN BENEFICIAL OWNERS” and “STOCK OWNERSHIP OF DIRECTORS AND EXECUTIVE OFFICERS” in the proxy statement for the annual stockholders meeting of April 28, 2026 and is incorporated herein by reference.

Information regarding equity compensation plans required by Regulation S‑K Item 201(d) is provided in Item 5 of this Form 10‑K.

ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE.

No transactions with management and others as defined by Item 404 of Regulation S‑K occurred in 2025.

Information concerning director independence is included under the caption “BOARD GOVERNANCE” in the proxy statement for the annual stockholders meeting of April 28, 2026 and is incorporated herein by reference.

ITEM 14. PRINCIPAL A CCOUNTANT FEES AND SERVICES.

Our independent registered public accounting firm is Ernst & Young LLP, Seattle, Washington (Auditor Firm ID No. 42 ).

Principal accounting fees and services information is included under the caption “INDEPENDENT AUDITORS” in the proxy statement for the annual stockholders meeting of April 28, 2026 and is incorporated herein by reference.

PART IV

ITEM 15. EXHIBITS, FINANC IAL STATEMENT SCHEDULES.

(a) (1) Listing of financial statements

The following consolidated financial statements of PACCAR Inc are included in Item 8:

Consolidated Statements of Income

— Years Ended December 31, 2025, 2024 and 2023

Consolidated Statements of Comprehensive Income

— Years Ended December 31, 2025, 2024 and 2023

Consolidated Balance Sheets

— December 31, 2025 and 2024

Consolidated Statements of Cash Flows

— Years Ended December 31, 2025, 2024 and 2023

Consolidated Statements of Stockholders’ Equity