FASTENAL CO

ANNUAL REPORT ON FORM 10-K

TABLE OF CONTENTS

DOCUMENTS INCORPORATED BY REFERENCE

Portions of our Proxy Statement relating to our 2026 annual meeting of shareholders (Proxy Statement) are incorporated by reference into Part III of this Annual Report on Form 10-K where indicated. Our Proxy Statement will be filed with the U.S. Securities and Exchange Commission within 120 days after the end of the fiscal year to which this report relates.

FORWARD-LOOKING STATEMENTS

Certain statements contained in this Annual Report on Form 10-K, or in our other reports and other written and oral statements we made from time to time, do not relate strictly to historical or current facts. As such, they are considered 'forward-looking statements' that provide current expectations or forecasts of future events. These forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such statements can be identified by the use of terminology such as anticipate, believe, should, estimate, expect, intend, may, will, plan, goal, project, hope, trend, target, opportunity, and similar words or expressions, or by references to typical outcomes. Any statement that is not a purely historical fact, including estimates, projections, trends, and the outcome of events that have not yet occurred, is a forward-looking statement. Our forward-looking statements generally relate to our expectations regarding the business environment in which we operate, our projections of future performance and opportunities for growth based on potential market opportunities, our perceived marketplace opportunities, our strategies, goals, mission and vision, historical sequential trends and sales changes, and our expectations about matters including capital expenditures, tax rates, inventory levels, liquidity, declaration and payment of dividends, liabilities from tax positions, the performance of our fastener business in comparison to our non-fastener business, openings and closing of branch locations and new machine equivalent units for Fastenal Managed Inventory (FMI) (including bin stock and industrial vending) and the competitive advantages they offer, our digital solutions and other product offerings (including new product lines), contract accounts as a percentage of overall sales, the advantages of our integrated physical and virtual model, growth in safety products as a percentage of product sales, the amount of FMI sales that we may be able to service through local inventory fulfillment terminals, and the ability of our competitors to replicate our distribution capabilities. You should understand that forward-looking statements involve a variety of risks and uncertainties, known and unknown, and may be affected by inaccurate assumptions. Consequently, no forward-looking statement can be guaranteed and actual results may vary materially. Factors that could cause our actual results to differ from those discussed in the forward-looking statements include, but are not limited to, economic downturns (including economic downturns as a result of global pandemics), weakness in the manufacturing or commercial construction industries or any of our end markets, competitive pressure on selling prices, changes in trade policies or tariffs, changes in our current mix of products, customers, or geographic locations, changes in our average branch size, changes in our purchasing patterns, changes in customer needs, changes in fuel or commodity prices, product and transportation inflation, inclement weather, changes in foreign currency exchange rates, difficulty in adapting our business model to different foreign business environments, failure to accurately predict the market potential of our business strategies, the introduction or expansion of new business strategies, increased competition (including with respect to our FMI), difficulty in maintaining installation quality as our industrial vending business expands, the failure to meet our goals and expectations regarding branch openings, branch closings, or expansion of our FMI offering, the failure to realize expected benefits from the completion of our strategic rationalization, changes in the implementation objectives of our business strategies, difficulty in hiring, relocating, training, or retaining qualified personnel, difficulty in controlling operating expenses, difficulty in collecting receivables or accurately predicting future inventory needs, changes in sales trends, changes in supplier production lead times, short-term inefficiencies in our supply chain may not normalize or result in certain warehousing customer growth, changes in our cash position or our need to make capital expenditures, credit market volatility and increases in interest rates, changes in tax law or the impact of discrete items on future tax rates, changes in the availability or price of commercial real estate, changes in the nature, price, or availability of distribution, supply chain, or other technology (including software licensed from third parties) and services related to that technology, difficulty in obtaining continued business from new safety product customers and the acceptance by customers of any new product lines, cybersecurity incidents, potential liability and reputational damage that can arise if our products are defective, and other risks and uncertainties detailed in this Annual Report on Form 10-K under the heading 'Item 1A. Risk Factors'. Each forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to update any such statement to reflect events or circumstances arising after such date.

PRESENTATION OF DOLLAR AMOUNTS

All dollar amounts in this Annual Report on Form 10-K are presented in millions, except for share and per share amounts or where otherwise noted. Throughout this document, percentage and dollar change calculations, which are based on non-rounded dollar values, may not be able to be recalculated using the dollar values in this document due to the rounding of those dollar values. References to daily sales rate (DSR) change may reflect either growth (positive) or contraction (negative) for the applicable period.

On April 23, 2025, Fastenal Company (together with our subsidiaries, hereinafter referred to as 'Fastenal,' 'the Company,' 'we,' 'our,' or 'us') announced a two-for-one stock split of its outstanding common stock. Holders of the Company's common stock, par value $0.01 per share, at the close of business on May 5, 2025, received one additional share of common stock for every share of common stock they owned. The stock split took effect at the close of business on May 21, 2025. All historical common stock share, per share information, stock option awards, and stockholders' equity balances for all periods presented in the accompanying Consolidated Financial Statements and Notes thereto in this Annual Report on Form 10-K have been retroactively adjusted to reflect the two-for-one stock split.