FAST: Material agreement · New financial obligation

Item 1.01. Entry into a Material Definitive Agreement. On June 18, 2026, Fastenal Company (the "Company") entered into a Second Amended and Restated Credit Agreement (as amended and restated, the "Credit Agreement") with Wells Fargo Bank, National Association, as administrative agent for the lenders party thereto (the "Administrative Agent") and the lenders party thereto, which amended and restated in full its existing unsecured revolving Amended and Restated Credit Agreement dated September 28, 2022, as amended, among the Company, the Administrative Agent and the lenders party thereto. The Credit Agreement was amended and restated to, among other things: (i) renew its revolving credit commitment under the Credit Agreement in the aggregate amount of $835,000,000 (with the existing uncommitted accordion option increased from $365,000,000 to an aggregate amount up to $500,000,000 for a possible total commitment amount if the accordion option is fully exercised of $1,335,000,000), (ii) extend the revolving credit maturity date of the revolving credit facility established under the Credit Agreement to June 18, 2031 (with two one-year extension options subject to certain conditions set forth in the Credit Agreement), (iii) modify the financial covenants to (x) remove the consolidated EBITDA covenant and (y) require the Company and its subsidiaries to comply, as of the last day of any fiscal quarter, with a minimum interest coverage ratio covenant of no less than 3.00 to 1.00 and a maximum consolidated total leverage ratio of no greater than 3.00 to 1.00 (with a step-up to 3.50 to 1.00 for the four fiscal quarters following the consummation of any qualified acquisition or series of related qualified acquisitions with consideration of at least $750 million), and (iv) make cert