Material Agreement (Form 8-K)

Item 1.01 Entry into a Material Definitive Agreement.

Effective September 30, 2025, Rush Enterprises, Inc. (the "Company") and certain of its subsidiaries (the Company and such subsidiaries collectively, "Rush") entered into the Fourth Amendment to Credit Agreement (the "Fourth Amendment") with each of the lenders party thereto (the "Lenders") and Wells Fargo Bank, N.A., as Administrative Agent (the "Administrative Agent"), which amended that certain Credit Agreement, dated as of September 14, 2021, among Rush, the Lenders and Administrative Agent (the "Credit Agreement"), as amended by the First Amendment to Credit Agreement dated as of November 30, 2022, the Second Amendment to Credit Agreement dated as of December 22, 2023, and the Third Amendment to Credit Agreement dated as of December 17, 2024.

Pursuant to the terms of the Fourth Amendment, the Credit Agreement was amended to, amongst other things, extend the expiration date to September 30, 2028, although, upon the occurrence and during the continuance of an event of default, the Administrative Agent has the right to, or upon the request of the required lenders must, terminate the commitments and declare all outstanding principal and interest due and payable. The Company may terminate the commitments at any time. In addition, certain other provisions of the Credit Agreement were modified with respect to the Company's Canadian subsidiary. In connection with the Fourth Amendment, the Company paid the Administrative Agent an upfront fee of $350,000.

The foregoing description is qualified in its entirety by reference to the full text of the Fourth Amendment, which is attached as Exhibit 10.1 to this Current Report on Form 8-K and incorporated in this Item 1.01 by reference.