Fastenal 10-K 2023-12-31

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-K

(Mark One)

For the fiscal year ended December 31, 2023, or

Commission file number 0-16125

FASTENAL COMPANY

(Exact name of registrant as specified in its charter)

(507) 454-5374

(Registrant's telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act:

None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Yes x No o

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. Yes o No x

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of "large accelerated filer", "accelerated filer", "smaller reporting company", and "emerging growth company" in Rule 12b-2 of the Exchange Act.

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant's executive officers during the relevant recovery period pursuant to § 240.10D-1(b). ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).

Yes ☐ No x

The aggregate market value of the Common Stock held by non-affiliates of the registrant as of June 30, 2023, the last business day of the registrant's most recently completed second fiscal quarter, was $33,637,970,933, based on the closing price of the registrant's Common Stock on that date. For purposes of determining this number, all executive officers and directors of the registrant as of June 30, 2023 are considered to be affiliates of the registrant. This number is provided only for the purposes of this report on Form 10-K and does not represent an admission by either the registrant or any such person as to the status of such person.

As of January 19, 2024, the registrant had 572,232,755 shares of Common Stock issued and outstanding.

FASTENAL COMPANY

ANNUAL REPORT ON FORM 10-K

TABLE OF CONTENTS

DOCUMENTS INCORPORATED BY REFERENCE

Portions of our Proxy Statement relating to our 2024 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 other reports of the company and other written and oral statements made from time to time by the company, 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, and our expectations about matters including capital expenditures, tax rates, inventory levels, liquidity, liabilities from tax positions, the performance of our fastener business in comparison to our non-fastener business, openings and closing of in-market locations and signings of Onsite 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), national 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 revenue 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, including the COVID-19 pandemic), weakness in the manufacturing or commercial construction industries, 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 or Onsite operations), difficulty in maintaining installation quality as our industrial vending business expands, the failure to meet our goals and expectations regarding expansion of our FMI or Onsite operations or any changes in branch locations, 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, 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, cyber security incidents, potential liability and reputational damage that can arise if our products are defective, and other risks and uncertainties detailed in this 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.

PART I

Note – Information in this section is as of year end unless otherwise noted. The year end is December 31, 2023 unless additional years are included or noted.

Overview

Fastenal Company (together with our subsidiaries, hereinafter referred to as 'Fastenal' or the company or by terms such as we, our, or us) began as a partnership in 1967, and was incorporated under the laws of Minnesota in 1968. We opened our first branch in 1967 in Winona, Minnesota, a city with a population today of approximately 26,000. We began with a marketing strategy of supplying threaded fasteners to customers through a branch network in small, medium, and, in subsequent years, large cities. Over time, how and where we engage our customers has expanded and evolved. Today we sell a broader range of industrial and construction supplies spanning more than nine major product lines through a global network of in-market locations utilizing diverse technologies such as vending devices, bin stock devices, and eCommerce. The large majority of our transactions are business-to-business. We provide additional descriptions of our product lines and market channels later in this document. At the end of 2023, we had 3,419 in-market locations (defined in the table below) in 25 countries supported by 15 distribution centers in North America (12 in the United States, two in Canada, and one in Mexico), and two in Europe, and we employed 23,201 people. We believe our success can be attributed to the high quality of our employees and their convenient proximity to our customers, and our ability to offer customers a full range of products and services to reduce their total cost of procurement.

Our Channels to Market

We engage our customers primarily through branch and Onsite locations. Branches and Onsites exist very close to our customers, usually within miles in the case of the former and most often within or immediately proximate to our customers' physical locations in the case of the latter, and together constitute our 'in-market' network. Many of our customers engage with us through eCommerce, but in most cases these customers are utilizing eCommerce to supplement our service through our other channels.

The following table shows, as of the end of each of the last 10 fiscal years, our consolidated net sales; the number of branch, Onsite, and total in-market locations; their respective sales, as well as the average monthly sales per location that were generated from our branch and Onsite locations; and our revenue generated from non-traditional sources:

This structure has evolved over time as a result of one of Fastenal's guiding principles since inception: that we can improve our service by getting closer to the customer. This has been achieved by opening branch locations and, more recently, Onsite locations. Today, we believe there are few companies that offer our North American in-market location coverage. In 2023, roughly 52% of our sales and 51% of our in-market locations were in major Metropolitan Statistical Areas (MSAs) (populations in the United States and Canada greater than 500,000 people), while 21% of our sales and 19% of our in-market locations were in small MSAs (populations under 500,000 people), and 27% of our sales and 30% of our in-market locations were not in an MSA. In our view, this has proven to be an efficient means of providing customers with a broad range of products and services on a timely basis. Maintaining operations that are physically proximate to our customers' operations have represented, and continue to represent, the foundation of our service approach.

We have two primary versions of our branch locations:

1. A 'traditional branch' typically services a wide variety of customers, ranging from the local operations of large, national account customers to smaller local businesses. Based on the unique characteristics of certain markets, some traditional branches will be structured and stocked to service retail customers. Locations are selected primarily based on their proximity to our distribution network and employment and production data for manufacturing and non-residential construction companies. We stock all branches with inventory drawn from all of our product lines and tailored by our district and branch personnel to the needs of the local customer base. Since Fastenal's founding and through 2013, traditional branch openings were a primary growth driver for the company, and we experienced net openings each year over that time span. However, new growth drivers, business models, and business tools have emerged and diminished the direct role of trad

Showing the first 8K of 75K characters. Open the full section

In addition to the other information in this Form 10-K, the following factors should be considered in evaluating our business. Our operating results depend upon many factors and are subject to various risks and uncertainties. The material risks and uncertainties known to us which may cause our operating results to vary from anticipated results or which may negatively affect our operating results and profitability are as follows:

Company-Specific Risks

Operational Risks

Products that we sell may expose us to potential material liability for property damage, environmental damage, personal injury, or death linked to the use of those products by our customers. Some of our customers operate in challenging industries in which there is a material risk of catastrophic events. We are actively seeking to expand our sales to certain categories of customers, some of whose businesses may entail heightened levels of such risk. If any of these events are linked to the use of any of our products by our customers, claims could be brought against us by those customers, by governmental authorities, and by third parties who are injured or damaged as a result of such events. In addition, our reputation could be adversely affected by negative publicity surrounding such events regardless of whether or not claims against us are successful. While we maintain insurance coverage to mitigate a portion of this risk and may have recourse against our suppliers for losses arising out of defects in products procured from them, we could experience significant losses as a result of claims made against us to the extent adequate insurance is not in place, the products are manufactured by us or legal recourse against our suppliers is otherwise not available, or our insurers or suppliers are unwilling or unable to satisfy their obligations to us.

Interruptions in the proper functioning of information systems or the inability to maintain or upgrade our information systems, or convert to alternate systems in a timely and efficient manner, could disrupt operations, cause unanticipated increases in costs and/or decreases in revenues, and result in less efficient operations. The proper functioning of our information systems is critical to many aspects of our business and we could be adversely affected if we experience a disruption or data loss relating to our information systems and are unable to recover in a timely manner. Our information systems are protected with robust backup systems and processes, including physical and software safeguards and remote processing capabilities. Still, information systems are vulnerable to natural disasters, power losses, unauthorized access, cybersecurity incidents, telecommunication failures, and other problems. In addition, certain software used by us is licensed from, and certain services related to our information systems are provided by, third parties who could choose to discontinue their products or services or their relationship with us. It is also possible that we are unable to improve, upgrade, maintain, and expand our information systems. Our ability to process orders, maintain proper levels of inventories, collect accounts receivable, pay expenses, and maintain the security of company and customer data, as well as the success of our growth drivers, is dependent in varying degrees on the effective and timely operation and support of our information technology systems. If critical information systems fail or these systems or related software or services are otherwise unavailable, if we experience extended delays or unexpected expenses in securing, developing, and otherwise implementing technology solutions to support our growth and operations, or if certain insurance coverages are limited in their capabilities or affordability, it could adversely affect our profitability and/or ability to grow.

The ability to adequately protect our intellectual property or successfully defend against infringement claims by others may have an adverse impact on operations. Additionally, our business relies on the use, validity, and continued protection of certain proprietary information and intellectual property, which include current and future patents, trade secrets, trademarks, service marks, copyrights, and confidentiality agreements, as well as license and sublicense agreements to use intellectual property owned by affiliated entities or third parties. Unauthorized use of our intellectual property by others could result in harm to various aspects of the business and may result in costly and protracted litigation in order to protect our rights. In addition, we may be subject to claims that we have infringed on the intellectual property rights of others, which could subject us to liability, require us to obtain licenses to use those rights at significant cost, or otherwise cause us to modify our operations.

Cyber security incidents, or violations of data privacy laws and regulations, could cause us to experience certain operational interruptions, incur substantial additional costs, become subject to legal or regulatory proceedings, or suffer damage to our reputation in the marketplace. The nature of our business requires us to receive, retain, and transmit certain personally identifying information that our customers provide to purchase products or services, register on our websites, or otherwise communicate and interact with us. While we have taken and continue to undertake significant steps to protect our customer and confidential information, a compromise of our data security systems or those of businesses with which we interact with could result in information related to our customers or business being obtained by unauthorized persons. We develop and update processes and maintain systems in an effort to try to prevent such unauthorized access, and have established and maintained disclosure controls and procedures that would permit us to make accurate and timely disclosures of any material event, including any cyber security event. The development and maintenance of these processes and systems are costly and require ongoing monitoring and updating as technologies change and efforts to overcome security measures become more sophisticated. Consequently, despite our efforts, the possibility of cyber security incidents cannot be eliminated entirely. There

can be no assurance that we will not experience a cyber security incident that may materially impact our business. While we also seek to obtain assurances that third parties we interact with will protect confidential information, there is a risk the confidentiality of data held or accessed by third parties may be compromised. If a compromise of our data security were to occur, it could interrupt our operations, subject us to additional legal, regulatory, and operating costs, and damage our reputation in the marketplace. In addition, regulatory authorities have increased their focus on how companies collect, process, use, store, share, and transmit personal data. New privacy security laws and regulations, including the European Union General Data Protection Regulation 2016, the California Consumer Protection Act, and other similar privacy laws, pose increasingly complex compliance challenges, which may increase compliance costs, and any failure to comply with data privacy laws and regulations could result in significant penalties.

Our ability to successfully attract, develop, and retain qualified personnel to staff our selling locations could impact labor costs, sales at existing selling locations, and the successful execution of our growth drivers. Our success depends in part on our ability to attract, motivate, and retain a sufficient number of qualified employees, including inside and outside branch associates, Onsite managers, national account sales representatives, and logistical and administrative support personnel, who understand and appreciate our culture and are able to adequately represent this culture to our customers. Qualified individuals of the requisite caliber and number needed to fill these positions may be in short supply in some areas, and the turnover rate in the industry is high, particularly for less tenured employees. If we are unable to hire and retain personnel capable of consistently providing a high level of customer service, as demonstrated by their enthusiasm for our culture and product knowledge, our sales could be materially and adversely affected. Additionally, competition for qualified employees could require us to pay higher wages to attract a sufficient number of employees. An inability to recruit and retain a sufficient number of qualified individuals in the future may also delay the planned expansion of our various selling channels.

Changes in customer or product mix, downward pressure on sales prices, and changes in volume or timing of orders have caused and could continue to cause our gross profit percentage to fluctuate or decline in the future. Changes in our customer and product mix have caused our gross profit percentage to decline and could cause our gross profit percentage to further fluctuate or decline. For example, we have experienced a sustained increase in the proportion of our sales attributable to both non-fastener products and national accounts and Onsite customers. Non-fastener products typically have a lower gross profit percentage than fasteners because in many cases non-fastener products are less technical, have shorter supply chains, and are easier to transport. Similarly, national accounts and Onsite customers typically have a lower gross profit percentage than smaller customers by virtue of their scale, available business, and broader offering of products which typically have lower gross profit percentages. Whether and to what extent this adverse mix impact will result in a decline of our gross profit percentage in any given year will depend on the extent to which they are offset by positive impacts to gross profit percentage during such year. Setting aside the circumstances of any given year or period, however, customer and product mix have contributed to the decline of our gross profit percentage over time and, based on the anticipated sources of our future growth, will likely continue to reduce our gross profit percentage into the foreseeable future. There are other variables that could cause our gross profit percentage to decline, including downward pressure on sales prices due to deflation, increases in overseas freight charges, the inability of freight revenue to leverage the expenses associated with our captive trucking fleet, pressure from customers to reduce costs, or increased competition. We could experience reductions in the volume of purchases we make from our suppliers, which could reduce supplier volume allowances. We may not be able to pass higher product costs along to customers if those customers have ready product or supplier alternatives in the marketplace. We experienced a number of these variables in 2023. A softer manufacturing economy caused relative weakness in our more cyclical and higher gross margin fastener product line versus our non-fastener product lines. Similarly, we continued to execute initiatives aimed at accelerating key account penetration, which resulted in relative growth in our lower gross margin national account and Onsite customers. The combination of these two events produced pressure on our product gross profit percentage in 2023 from product and customer mix.

Our operating and administrative expenses could grow more rapidly than net sales which could result in failure to achieve our goals related to leveraging revenue growth into higher net earnings. Over time, we have generally experienced an increase in our operating and administrative expenses, including costs related to payroll, occupancy, freight, and information technology, among others, as our net sales have grown. However, historically, a portion of these expenses has not increased at the same rates as net sales, allowing us to leverage our growth and sustain or expand our operating profit margins. There are various scenarios where we may not be able to continue to achieve this leverage as we have been able to do in the past. For instance, it is typical that when demand declines, most commonly from cyclical or general market factors (though it could be due to customer losses or some other company-specific event), our operating and administrative expenses do not fall as quickly as net sales. It is also possible that in the future we will elect to make investments in operating and administrative expenses that would result in costs growing faster than net sales. In addition, market variables, which include but are not exclusive of labor rates, energy costs, legal costs, and health care costs, could move in such a way as to cause us to not be able to manage our operating and administrative expenses so as to leverage our revenue growth into higher net earnings. Should any of these scenarios, or a combination of them, occur in the future, it is possible that our operating and pre-tax profit margins could decline even if we are able to grow revenue.

Failure to maintain an effective system of internal controls over business processes and/or financial reporting could materially impact our business and results. Company management is responsible for establishing and maintaining effective internal controls designed to provide reasonable assurance regarding the achievement of objectives relating to operations, reporting, and compliance. Any system of internal controls, no matter how well designed and operated, can only provide reasonable, not absolute, assurance that the objectives of the control system are met. Further, the design of a system of controls must reflect the fact that there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all systems of internal controls, internal controls over business processes and financial reporting may not prevent or detect fraud or misstatements. Any failure to maintain an effective system of internal controls over business processes and financial reporting could limit our ability to report our financial results accurately and timely or to detect and prevent fraud, and could expose us to litigation, economic loss, or adversely affect the market price of our common stock.

Our competitive advantage in FMI solutions, which includes industrial vending (FASTVend) and bin stock (FASTStock and FASTBin) tools could be eliminated and, in the case of FASTVend and FASTBin, the loss of key suppliers of equipment and services could be impactful and result in failure to deploy devices. Certain circumstances could lead to a short-term inability to promote and/or install our FMI solutions. We believe we have a competitive advantage in industrial vending and bin stock due to our hardware and software, our local presence (allowing us to service devices and bins more rapidly and with less burden on our customers), our depth of products that lend themselves to being dispensed through industrial vending devices or bin stocks, and, particularly in North America, our distribution strength. These advantages have developed over time; however, other competitors could respond to our expanding industrial vending and bin stock position with highly competitive platforms of their own. Such competition could negatively impact our ability to expand our industrial vending and bin stock tools or negatively impact the economics of that business. In addition, we currently rely on a limited number of suppliers for our vending devices, RFID technology, and IR technology used in our FASTVend and FASTBin platforms. While devices, software, and services can be obtained from other sources, loss of our current suppliers could be disruptive and could result in our failure to meet short- or long-term goals related to the numbers of FASTVend and FASTBin devices we are able to deploy. Certain circumstances may reduce short-term customer receptivity to adopting our FMI services. For instance, during periods of dramatic change in economic activity, some customers may prioritize managing existing operations over adopting new technologies until business circumstances change.

Our inability to attract or transition key executive officers may divert the attention of other members of our senior leadership and adversely impact our existing operations. Our success depends on the efforts and abilities of our key executive officers and senior leadership. In the event of voluntary or involuntary vacancies in our executive team in the future, the extent to which there is disruption in the oversight and/or leadership of our business will depend on our ability to either transition internal, talented individuals or recruit suitable replacements to serve in these roles. In addition, difficulties in smoothly implementing any transition to new members of our executive team, or recruiting suitable replacements, could divert the attention of other members of our senior leadership team from our existing operations.

Failure to implement an effective Environmental, Social, and Governance (ESG) strategy could result in financial losses or impair our corporate reputation. Customers, suppliers, employees, community partners, shareholders, and regulatory agencies are increasingly scrutinizing our ESG disclosures and practices and factoring the social impact of our policies and practices into whether and how they engage with us. Our ability to achieve any ESG objective is subject to numerous risks, many of which are outside of our control. Examples of such risks include:

• the availability and cost of low- or non-carbon-based energy sources;

• the evolving regulatory requirements affecting ESG standards or disclosures;

• increases in reporting and operating regulations around ESG may result in higher operating expenses and/or capital expenditures that could reduce our profitability and/or cash flow;

• the availability of suppliers that can meet sustainability, diversity, and other ESG standards that we may set;

• the availability of effective and acceptable emission offset technologies or strategies in the event such tools will be necessary to achieve overall emission reduction and mitigation goals; and

• our ability to recruit, develop, and retain diverse talent in our labor markets.

An actual or perceived inability to satisfactorily address the concerns and disclosure expectations of our stakeholders could adversely affect our corporate reputation, image, identity, brand equity, and status, which could hurt our ability to retain and acquire customers and employees, lead to penalties for non-compliance, and/or negatively impact the price performance of our common stock.

We may be unable to meet our goals regarding the growth drivers of our business. Our sales growth is dependent primarily on our ability to attract new customers and increase our activity with existing customers within North America and abroad. In recent years, we have increased the resources devoted to developing a multi-dimensional, differentiated service offering, including our Digital Footprint (which incorporates our FMI and e-procurement capabilities), Onsites, national accounts, international capabilities, and process and consumption analytics. While we have taken steps to build momentum in the growth drivers of our business, we cannot assure you those steps will lead to sales growth. Failure to achieve any of our goals regarding our Digital Footprint, Onsites, national accounts, international capabilities, analytics, or other growth drivers could negatively impact our long-term sales and profit growth. In addition, failure to identify appropriate targets for the growth drivers of our business or failure to persuade the appropriate targets to adopt these offerings once identified may adversely impact our internally developed and/or externally communicated deployment objectives.

The ability to identify new products and product lines, and integrate them into our selling efforts and distribution network, may impact our ability to compete, our ability to generate additional sales, and our profit margins. Our success depends in part on our ability to develop product expertise at our selling locations and through our specialist roles and identify future products and product lines that complement existing products and product lines and that respond to our customers' needs. We may not be able to compete effectively unless our product selection keeps up with trends in the markets in which we compete or trends in new products. In addition, our ability to integrate new products and product lines into our selling locations and distribution network could impact sales and profit margins.

The ability to adequately protect our reputation may have an adverse impact on operations and profitability. The Fastenal name is valuable to our business, as well as to the implementation of our strategies for expanding our business. Maintaining, promoting, and positioning our brand will depend largely on our ability to provide high quality products, deliver consistent services, and improve our customer's business operations. Further, information on our company, including our products and services, can be more easily accessed and more quickly disseminated through traditional and social media and digital channels. Should we fail to deliver a positive customer experience or should our public image be tarnished by negative publicity, whether or not based in fact, it could jeopardize our reputation and discourage customers from purchasing our products and services, which in turn could adversely affect our ability to grow our revenues and profitability.

We may not be able to compete effectively against traditional or non-traditional competitors, which could cause us to lose market share or erode our gross and/or operating income profit and/or percentage. The industrial, construction, and maintenance supply industry, although slowly consolidating, still remains a large, fragmented, and highly competitive industry. Our current or future competitors may include companies with similar or greater market presence, name recognition, and financial, marketing, technological, and other resources, and we believe they will continue to challenge us with their product selection, financial resources, technological advancements, and services. Increased competition from brick-and-mortar retailers could cause us to lose market share, reduce our prices, or increase our spending. Similarly, the emergence of online retailers, whether as extensions of our traditional competition or in the form of major, non-traditional competitors, could result in easier and quicker price discovery and the adoption of aggressive pricing strategies and sales methods. These pressures could have the effect of eroding our gross and/or operating income profit and/or percentage over time.

We may not be successful in integrating acquisitions and achieving intended benefits and synergies. Historically, the vast majority of our growth has been organic. However, we have completed several acquisitions over the last decade and expect to continue to pursue strategic acquisitions that we believe will either expand or complement our business in new or existing markets or further enhance the value and offerings we are able to provide to our existing or future potential customers. Acquisitions involve numerous risks and challenges, including, among others, a risk of potential loss of key employees of an acquired business, inability to achieve identified operating and financial synergies anticipated to result from an acquisition, diversion of our capital and our management's attention from other business issues, and risks related to the integration of the acquired business including unanticipated changes in our business, our industry, or general economic conditions that affect the assumptions underlying the acquisition. Any one or more of these factors could cause us to not realize the benefits anticipated to result from the acquisitions.

Equity Risks

Our stock price will fluctuate, and at times these fluctuations may be volatile. The prices of markets and individual equities tend to fluctuate. These fluctuations commonly reflect events, many of which may be fully or partially outside of our control, that may change investor's perception of our future earnings growth prospects, including changes in economic conditions, ability to execute business strategy, the impacts of public policy, investor sentiment, competitive dynamics, and many other factors. While the sources of stock price fluctuation can be common across companies, the magnitude of these fluctuations can vary for different companies. This is commonly measured by beta, which is an individual stock's volatility in relation to the overall market. Our stock price has traditionally had a high beta value, which means fluctuations in the price of our shares will often be sharper than what is experienced by broader market indices. We can provide no assurance that the above-average historical volatility of our stock versus the broader market will moderate. Volatility in our stock price could also result in the

filing of securities class action litigation, which could result in substantial costs and the diversion of our management's time, attention, and resources.

There can be no assurance that our stock price will continue to reflect the current multiple of earnings over time. Stock prices, including ours, are commonly thought to be a function of earnings compounded by a multiple. This is often referred to as a price-to-earnings (P/E) ratio, although other forms of multiples are often utilized by investors to value our company's shares. Historically, investors have given our earnings a higher multiple, or premium, than is typical of the broader industrial sector with which we are typically associated. We believe we have earned this premium by virtue of a long history of superior growth, profitability, and returns. However, to the extent that we fail to successfully execute our growth strategies and/or poorly navigate the risks that surround our business, including those described throughout this section, or to the extent our industry (industrial distribution, or industrial stocks in general) loses favor in the marketplace, there can be no assurance that investors will continue to afford a premium multiple to our earnings which could adversely affect our stock price.

We cannot provide any guaranty of future dividend payments or that we will continue to purchase shares of our common stock pursuant to our share purchase program. Although our board of directors has historically authorized the payment of quarterly cash dividends on our common stock and indicated an intention to do so in the future, there are no assurances that we will continue to pay dividends in the future or continue to increase dividends at historic rates. In addition, although our board of directors has authorized share purchase programs and we purchased shares in 2022, 2020, and prior years through these programs, we may discontinue doing so at any time. Any decision to continue to pay quarterly dividends on our common stock, to increase those dividends, or to purchase our common stock in the future will be based upon our financial condition and results of operations, the price of our common stock, credit conditions, and such other factors as are deemed relevant by our board of directors.

General Economic and Operating Risks

Operational Risks

A downturn in the economy or in the principal markets served by us and other factors may affect customer spending, which could harm our operating results. In general, our sales are the result of planned and unplanned customer spending on products used in production of final goods, infrastructure construction, and/or the maintenance of facilities. This spending is affected by many factors, including, among others:

• general business conditions;

• business conditions in our principal markets;

• changes in the value of local currencies relative to our functional currency, the United States dollar,

• interest rates;

• increases (inflation) or decreases (deflation) in the cost of products from our vendors, transportation services, energy and fuel prices, and electrical power rates;

• liquidity in credit markets;

• taxation;

• government regulations and actions;

• the impact on customer demand or availability of goods and services based on labor shortages or work stoppages;

• unemployment trends;

• terrorist attacks and acts of war;

• impact of higher sustained global temperatures (global warming);

• acts of God, which may include, but are not limited to, weather events, earthquakes, pandemics, etc.; and

• other matters that influence customer confidence and spending.

A downturn in either the national or local economies where we operate, or in the principal markets served by us, or changes in any of the other factors described above, could negatively impact sales at our in-market locations, sales through our other selling channels, and the level of profitability of those in-market locations and other selling channels. The primary variable affecting our results in 2023 was a softening in manufacturing sector business conditions.

Products manufactured in foreign countries may cease to be available, which could adversely affect our inventory levels and operating results. We obtain certain of our products, and our suppliers obtain certain of their products, from China, Taiwan, South Korea, and other foreign countries. Our suppliers could discontinue or experience disruption in selling products manufactured in foreign countries at any time for reasons that may or may not be in our control or our suppliers' control, including foreign government regulations, domestic government regulations, disruption in trade relationships and agreements, political unrest, war, disease, labor availability, or changes in local economic conditions. Additionally, the shipment of goods from foreign countries could be delayed by container shipping companies encountering financial, capacity, or other difficulties. Our operating results and inventory levels could suffer if we are unable to promptly replace a supplier or shipper who is

unwilling or unable to satisfy our requirements with another supplier or shipper providing products and services of comparable quality and utility.

Trade policies could make sourcing product from overseas more difficult and/or more costly, and could adversely impact our gross and/or operating profit percentage. We source a significant amount of the products we sell from outside of North America, primarily Asia. We have made significant structural investments over time to be able to source both directly from Asia through our wholly-owned, Asia-based subsidiary, FASTCO Trading Co., Ltd. and indirectly from suppliers that procure product from international sources. This was initially necessary due to the absence of significant domestic fastener production, but over time we have expanded our non-fastener sourcing as well, and at this time it may be difficult to adjust our sourcing in the short term. In light of this, changes in trade policies could affect our sourcing operations, our ability to secure sufficient product to serve our customers and/or impact the cost or price of our products, with potentially adverse impacts on our gross and operating profit percentages and financial results. China represents a significant source of product for North America. In addition, we move and source products within North America. Any trading disruption (tariffs, product restrictions, etc.) between Canada, the United States, and Mexico, or disruption in their respective trading relationships with other nations can adversely impact our business. There can be no assurances that these disruptions will not continue or increase in the future, with the previously mentioned countries or additional countries with which we do business. The degree to which these changes in the global marketplace affect our financial results will be influenced by the specific details of the changes in trade policies, their timing and duration, and our effectiveness in deploying tools to address these issues.

Changes in energy costs and the cost of raw materials used in our products could impact our net sales, cost of sales, gross profit percentage, distribution expenses, and occupancy expenses, which may result in lower operating income. Our suppliers can experience significant fluctuation over time in the cost of raw materials (e.g., steel, plastic, etc.) used to produce their products. They can also experience significant fluctuation in the cost of energy consumed in their production processes and in the cost of fuel consumed to transport their products. These suppliers typically look to pass their increased costs along to us through price increases. We also consume energy and fuel in our own operations, and can experience direct and significant fluctuation in our own costs. Increases in the cost of fuel or raw materials could be damaging to us, decreases in those costs, particularly if severe, could also adversely impact us by creating deflation in selling prices, which could cause our gross profit to decline, or by negatively impacting customers in certain industries, which could cause our sales to those customers to decline. Failure to fully pass any such increased prices and costs through to our customers or to modify our activities to mitigate the impact would have an adverse effect on our operating income.

We are exposed to foreign currency exchange rate risk, and changes in foreign exchange rates could increase the cost of purchasing products and impact our foreign sales. Given that we were founded and remain based in the United States and that we are publicly traded in the United States, we report our results based on the United States dollar. Because the functional currency related to most of our non-United States operations is the applicable local currency, we are exposed to foreign currency exchange rate risk arising from transactions in the normal course of business. Fluctuations in the relative strength of foreign economies and their related currencies could adversely impact our ability to procure products at competitive prices and our foreign sales. Historically, our primary exchange rate exposure has been with the Canadian dollar as our Mexican activities are primarily conducted in United States dollars and our non-North American operations are relatively small in scale. There can be no assurance that currency exchange rate fluctuations with the Canadian dollar and other foreign currencies will not adversely affect our results of operations, financial condition, and cash flows. While the use of currency hedging instruments may provide us with protection from adverse fluctuations in currency exchange rates, we are not currently using these instruments and we have not historically hedged this exposure. If we decide to do so in the future, we could potentially forego the benefits that might result from favorable fluctuations in currency exchange rates.

Our current estimates of total market potential as well as the market potential of our business strategies could be incorrect. We believe we have a significant opportunity for growth based on our belief that North American market demand for the products we sell is estimated to exceed $140 billion. This figure is not derived from an independent organization or data source that aggregates and publishes widely agreed-upon demand and market share statistics. Instead, we have identified this figure based on our own experience in the marketplace for our products and by evaluating estimates from other sources. If we have overestimated the size of our market, and in doing so, underestimated our current share of it, the size of our opportunity for growth may not be as significant as we currently believe. Similarly, we have provided estimates of the opportunities we have with some of our specific growth strategies, such as FMI solutions and Onsite locations. Within North America, we believe the potential market opportunity for industrial vending is approximately 1.7 million devices and we have identified over 12,000 customer locations with the potential to implement our Onsite service model within our traditional manufacturing and construction customer base. We have identified additional markets, such as government, healthcare, and academia, and geographies into which we can sell our FMI solutions, which would increase the number of identified potential FMI solutions or Onsite locations. However, our presence in emerging markets and geographies is not as established as is the case in our traditional markets and geographies, which could extend the sales cycle. As is the case for total market size, we use our own experience and data to arrive at the size of these potential opportunities and not independent sources. These estimates are based on our business model today, and the introduction or expansion of other business strategies could cause them to change. In

addition, the market potential of a particular business strategy may vary from expectations due to a change in the marketplace (such as changes in customer concentration or needs), a change in the nature of that business strategy, or weaker than anticipated acceptance by customers of that business strategy. We cannot guarantee that our market potential estimates are accurate or that we will ultimately decide to expand our industrial vending or Onsite service models as we anticipate to reach the full market opportunity.

The industrial, construction, and maintenance supply industry is consolidating, which could cause it to become more competitive and could negatively impact our market share, gross profit, and operating income. The industrial, construction, and maintenance supply industry in North America is consolidating, reflecting two factors. First, our customer's needs are evolving to reflect a greater awareness of the total cost and risk of fulfillment and their need to have consistent sources of supply at multiple locations, including outside of North America. Second, providing these capabilities to our customers requires increasing investment in hardware, software, and analytic capabilities that require a certain degree of scale to support. While we believe that in a fragmented market such as exists for industrial supplies these emerging trends favor large distributors such as Fastenal, as the industry consolidates into fewer and larger competitors it may become more difficult to differentiate our product and service offering from that of our competitors. We also continue to see consolidation among our suppliers. This trend could result in fewer and larger suppliers, with greater channel power and negotiating leverage. There can be no assurance we will be able in the future to take effective advantage of the trend toward consolidation within our industry or among our suppliers. In either or both cases, the trend toward consolidation could make it more difficult for us to maintain our growth and/or gross and operating profit. Furthermore, as our industrial customers face increased foreign competition, and potentially lose business to foreign competitors, or shift their operations overseas in an effort to reduce expenses, we may face increased difficulty in growing and maintaining our market share.

The occurrence of a widespread public health crisis could have a material adverse effect on our business, results of operations, and financial condition. A public health crisis, if sufficiently widespread as to affect economic activity, could negatively impact our business. Mitigation efforts and prescriptions may be facilitated by regulatory authorities, which could limit our flexibility to pursue alternative, potentially more favorable, means of limiting these negative impacts. The effects on our business efforts to mitigate the effects of the crisis may include a reduction in demand, inefficiencies due to workplace accommodations, reduced availability of personnel, supply chain disruption, or constraints on product availability, among other difficulties. In any such event, the severity, duration, and extent of the crisis can be difficult to predict, which can make it difficult to anticipate the magnitude and length of the impact on our sales, profits, and/or cash flow. It can also be difficult to anticipate what the effect on business conditions will be as the impacts of any public health crisis fades and mitigating policies are reversed.

Inclement weather and other disruptions to the transportation network could adversely impact our distribution system and demand for our products. Our ability to provide efficient distribution of core business products to our branch network is an integral component of our overall business strategy. Disruptions at distribution centers or shipping ports may affect our ability to both maintain core products in inventory and deliver products to our customers on a timely basis, which may in turn adversely affect our results of operations. In addition, severe weather conditions could adversely affect demand for our products in particularly hard hit regions.

Legal, Regulatory, and Compliance Risks

Our business is subject to a wide array of operating laws and regulations in every jurisdiction where we operate. Compliance with these laws and regulations increases the cost of doing business and failure to comply could result in the imposition of fines or penalties, damage to our reputation, or the termination of contracts. We are subject to a variety of laws and regulations including without limitation import and export requirements, anti-bribery and corruption laws, product compliance laws, environmental laws, foreign exchange controls and cash repatriation restrictions, advertising regulations, data privacy (including in the U.S., the California Consumer Privacy Act, and in the European Union, the General Data Protection Regulation 2016, with interpretations varying from state to state and country to country) and cyber security requirements (including protection of information and incident responses), regulations on suppliers regarding the sources of supplies or products, labor and employment laws, and anti-competition regulations. In addition, as a supplier to federal, state, and local government agencies, we must comply with certain laws and regulations relating specifically to the formation, administration, and performance of our governmental contracts. We are also subject to governmental audits and inquiries in the normal course of business. Ongoing audit activity and changes to the legal and regulatory environments could increase the cost of doing business, and such costs may increase in the future as a result of changes in these laws and regulations or in their interpretation. While we have implemented policies and procedures designed to facilitate compliance with these laws and regulations, there can be no assurance that our employees, contractors, or agents will not violate such laws and regulations, or our policies. Any such violations could result in the imposition of fines and penalties, damage to our reputation, and, in the case of laws and regulations relating specifically to governmental contracts, the loss of those contracts.

Tax laws and regulations require compliance efforts that can increase our cost of doing business and changes to these laws and regulations could impact financial results. We are subject to a variety of tax laws and regulation in the jurisdictions in which we operate. Maintaining compliance with these laws can increase our cost of doing business and failure to comply could result in audits or the imposition of fines or penalties. Further, our future effective tax rates in any of these jurisdictions could be affected, positively or negatively, by changing tax priorities, changes in statutory rates, and/or changes in tax laws or the interpretation thereof. In 2022, the Inflation Reduction Act was passed which contained tax-related provisions. We did not experience, and do not anticipate experiencing in the near future, any meaningful impact to our tax rates from the legislation.

Changes in accounting standards and subjective assumptions, estimates, and judgments by management related to complex accounting matters could significantly affect our financial results or financial condition. U.S. generally accepted accounting principles (GAAP) and related accounting pronouncements, implementation guidelines and interpretations with regard to a wide range of matters that are relevant to our business, such as asset impairment, inventories, lease obligations, self-insurance, vendor allowances, tax matters, business combinations, and legal matters, are complex and involve many subjective assumptions, estimates, and judgments. Changes in accounting standards or their interpretation or changes in underlying assumptions, estimates or judgments, could significantly change our reported or expected financial performance or financial condition. The implementation of new accounting standards could also require certain systems, internal process, internal control, and other changes that could increase our operating costs.

We are subject to litigation risk due to the nature of our business, which may have a material adverse effect on our business. From time to time, we are involved in lawsuits or other legal proceedings that arise from business transactions or the operation of our business. Due to the nature of our business, these proceedings may, for example, relate to product liability claims, commercial disputes, suits arising from our trucking operations, or employment matters. In addition, we could face claims over other matters, such as claims arising from our status as a government contractor, intellectual property matters, or corporate or securities law matters. The defense and ultimate outcome of lawsuits or other legal proceedings may result in higher operating expenses, which could have a material adverse effect on our business, financial condition or results of operations.

Credit and Liquidity Risks

Tight credit markets could impact our ability to obtain financing on reasonable terms or increase the cost of existing or future financing and interest rate fluctuations could adversely impact our results. As of December 31, 2023, we had $260.0 of outstanding debt obligations, all in the form of senior unsecured promissory notes issued under our master note agreement (the Master Note Agreement). The notes issued under our Master Note Agreement carry a fixed interest rate and consist of five series and are described in further detail in Note 9 of the Notes to Consolidated Financial Statements in this Form 10-K. We also have borrowing capacity under our revolving credit facility (the Credit Facility) of $835.0, but no loans were outstanding as of December 31, 2023. Loans under the Credit Facility generally bear interest at a rate per annum equal to Daily Simple Secured Overnight Financing Rate (SOFR), the rate on which may vary daily, and mature on September 28, 2027.

We currently have the capacity under our Credit Facility and Master Note Agreement to increase borrowings in the future to finance stock purchases, dividends, capital expenditures, working capital additions, acquisitions, or other investments. Should we seek to increase our borrowings during periods of volatility and disruption in the United States credit markets, financing may become more costly and more difficult to obtain. This was not a material consideration in 2023. The cost of servicing any existing balances on our Credit Facility could increase if interest rates increase due to the SOFR-based interest rate provided for under our Credit Facility.

None.

Cybersecurity Risk Management and Strategy

We have established processes and procedures for ensuring the confidentiality, integrity, and availability of data. These processes are in place to assess, identify, and manage material risks from cybersecurity threats. Annual risk assessments are performed and incorporated as part of our Enterprise Risk Management (ERM) organizational process, which is overseen by our Board of Directors (the Board) and the Audit Committee, along with Executive Leadership. Our information security management system (ISMS) program is aligned to ISO 27001, which is an international standard to manage information security. ISO 27001 is published by the International Organization for Standardization (ISO), the world's largest developer of voluntary standards, and the International Electrotechnical Commission (IEC).

Our information technology (IT) security department, led by our Senior Vice President (SVP) IT Infrastructure & Security, is tasked with monitoring cybersecurity and operational risks related to information security and system disruption. The team employs measures designed to protect against, detect, and respond to cybersecurity threats, and has implemented processes and procedures aligned with our information security management system to support and promote resilient programs. This includes:

• Enterprise security framework and cyber security standards;

• Cyber security awareness and training plans;

• Security assessments and monitoring;

• Restricted physical access to critical areas, servers, and network equipment;

• Incident response, crisis management, business continuity, and disaster recovery plans; and

• Third-party IT vendor risk management process to identify, assess, and manage risks presented by our IT vendors and business partners.

Our IT security department maintains a playbook to respond to potential cybersecurity threats. We conduct tabletop exercises for tactical response readiness, perform regular security scans of our environment both from an external and internal perspective, as well as work with a qualified third-party vendor to perform penetration tests of our environment. Any identified risks are included in our overall risk management program, and internal and external auditors validate our IT controls on a regular basis.

We conduct organization-wide cybersecurity training and compliance exercises in connection with our information security program. This training consists of educational material and compliance testing administered to all of our employees, which is tracked and recorded throughout the year. Results and progress are shared with Executive Leadership, the Audit Committee, and the Board. Employee phishing tests are conducted on a regular basis. Employees who do not follow protocol are redirected for additional training.

We have implemented an IT vendor risk management policy that provides guidance in managing risks associated with IT vendors and business partners. We have also established a third-party risk management program and conduct pre-onboarding security assessments and annual re-assessments of our service providers to collect, track, and manage third-party security controls based upon the risk presented to the business. Any issues identified during assessment are tracked through to remediation.

Governance

Our Board of Directors and Audit Committee are actively engaged in the oversight of our risk management, including cybersecurity risk. The Audit Committee receives quarterly reports on information security from our SVP IT Infrastructure & Security. Additionally, Executive Leadership is briefed on information security at least quarterly by members of our IT security, compliance, governance, and audit teams. The Audit Committee of the Board is responsible for overseeing our risk exposure to information security, cybersecurity, and data protection, as well as the steps management has taken to monitor and control such exposures.

Our IT security department, which assesses and manages our risks from cybersecurity threats, is led by our SVP IT Infrastructure & Security, who reports to our Senior EVP IT. Additional oversight for assessing and managing cybersecurity risk include Executive sponsors, Information Technology, Human Resources, IT Governance Risk and Compliance, Internal Audit, and Legal, as well as members of our Information Security Risk Council, IT Risk Committee, and Enterprise Risk Management teams.

We have in place an incident response plan to identify, protect, detect, respond to, and recover from cybersecurity threats and incidents. The Information Security Risk Council, Executive Leadership, the Audit Committee, and the Board are notified of any material cybersecurity incidents through an established escalation process. Additionally, we maintain a qualified third-party vendor relationship which is available to the team for on-demand incident response and investigation, as needed.

The IT security department team members have degrees applicable to cybersecurity, including Bachelors in Information Systems, Computer Science, Management Information Systems and/or Masters in Cybersecurity, and hold professional certifications, including Certified Information Systems Security Professional, Offensive Security Certified Professional, Global Information Assurance Certification (GIAC) Defensible Security Architecture, GIAC Forensic Examiner, GIAC Incident Handling, and GIAC Open Source Intelligence. Our SVP IT Infrastructure & Security holds a Cybersecurity and Privacy Law Certificate from Mitchell Hamline School of Law, and has 28 years of experience in systems, network, and database administration. Additionally, our Senior IT security department manager is an Offensive Security Certified Professional, and holds GIAC Security Leadership (GSLC), with over 25 years of experience in network performance, availability, and protection.

Impact of Cybersecurity Threats

There have been no previous cybersecurity incidents which have materially affected us to date, including our business strategy, results of operations or financial condition. However, any future potential risks from cybersecurity threats, including but not limited to exploitation of vulnerabilities, ransomware, denial of service, supply chain attacks, or other similar threats may materially affect us, including our execution of business strategy, reputation, results of operations and/or financial condition.

Note – Information in this section is as of December 31, 2023, unless otherwise noted.

We own, and in some cases, lease, the following facilities, excluding selling locations:

We also own, and in some cases, lease, the following support facilities, excluding selling locations:

In addition, we own 154 buildings that house our in-market locations in various cities throughout North America.

All other buildings we occupy are leased. Leased branches range from approximately 3,000 to 20,000 square feet, with lease terms of up to 120 months (most initial lease terms are for 36 to 60 months).

We currently own land for future distribution center expansion and development. If economic conditions are suitable in the future, we will consider purchasing branch locations to house our older branches. It is anticipated the majority of new branch locations will continue to be leased. It is our policy to negotiate relatively short lease terms to facilitate relocation of particular branch operations, when desirable. Our experience has been that there is sufficient space suitable for our needs and available for leasing.

A description of our legal proceedings, if any, is contained in Note 10 of the Notes to Consolidated Financial Statements.

Not applicable.

PART II

Common Stock Data

Dollar amounts in this section are stated in whole numbers.

Our shares are traded on The Nasdaq Stock Market under the symbol 'FAST'. As of January 19, 2024, there were approximately 900 record holders of our common stock, which include nominees or broker dealers holding stock on behalf of an estimated 662,000 beneficial owners.

Issuer Purchases of Equity Securities

The table below sets forth information regarding purchases of our common stock during each of the last three months of 2023:

Purchases of shares of our common stock, if applicable, are described later in this Form 10-K under the heading 'Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations' under 'Liquidity and Capital Resources' - 'Stock Purchases'.

Fastenal Company Common Stock Comparative Performance Graph

Set forth below is a graph comparing, for the five years ended December 31, 2023, the yearly cumulative total shareholder return on our common stock with the yearly cumulative total shareholder return of the S&P 500 Index and the Dow Jones US Industrial Suppliers Index.

The comparison of total shareholder returns in the performance graph assumes that $100 was invested on December 31, 2018 in Fastenal Company, the S&P 500 Index, and the Dow Jones US Industrial Suppliers Index, and that dividends were reinvested when and as paid.

Comparison of Five-Year Cumulative Total Return Among Fastenal Company, the S&P 500 Index, and the Dow Jones US Industrial Suppliers Index

Note - The graph and index table above were obtained from Zacks SEC Compliance Services Group.

The following is management's discussion and analysis of certain significant factors which have affected our financial position and operating results during the periods included in the accompanying consolidated financial statements and should be read in conjunction with those consolidated financial statements. This section of this Form 10-K generally discusses 2023 and 2022 items and year-to-year comparisons for the current year and the prior year. Discussions of 2021 items can be found in 'Management's Discussion and Analysis of Financial Condition and Results of Operations' in Part II, Item 7 of our annual report on Form 10-K for the fiscal year ended December 31, 2022.

Business and Operational Overview

Fastenal is a North American leader in the wholesale distribution of industrial and construction supplies. We distribute these supplies through a network of more than 3,400 in-market locations. Our largest end market is manufacturing. Sales to these customers includes products for both original equipment manufacturing (OEM), where our products are consumed in the final products of our customers, and manufacturing, repair and operations (MRO), where our products are consumed to support the facilities and ongoing operations of our customers. We also service general and commercial contractors in non-residential end markets as well as farmers, truckers, railroads, oil exploration companies, oil production and refinement companies, mining companies, federal, state, and local governmental entities, schools, and certain retail trades. Geographically, our branches, Onsite locations, and customers are primarily located in North America, though we continue to grow our non-North American presence as well.

It is helpful to appreciate several aspects of our marketplace: First, it is big. We estimate the North American marketplace for industrial supplies is in excess of $140 billion per year (and we have expanded beyond North America) and no company has a significant portion of this market. Second, many of the products we sell are individually inexpensive, but the cost and time to manage, procure, and transport these products can be quite meaningful. Third, many customers prefer to reduce their number of MRO and OEM suppliers to simplify their business, while also utilizing various technologies and models (including our local branches when they need something quickly or unexpectedly) to improve availability and reduce waste. Lastly, we believe the markets are efficient. In our view, this means that companies who grow market share are those that develop differentiated capabilities that provide the greatest value to the customer.

Our approach to addressing these aspects of our marketplace is captured in our motto Growth Through Customer Service**®** and our tagline Where Industry Meets Innovation**™**. The concept of growth is simple: find more customers every day that value the services we provide and increase our activity with them. However, execution is hard work. First, we recruit service-minded individuals to support customers and empower them to operate in a decentralized fashion to maximize their flexibility to solve customer problems. We support these customer-facing resources with a supply chain capability that is speedy, efficient, and cost-effective. This has formed the foundation of our high-touch model since inception. Second, we invest in, develop, and deploy capabilities that allow us to illuminate and provide greater control over a customer's supply chain. These capabilities range from service models that take advantage of our local presence and/or our ability to more efficiently manage complex procurement needs, to hardware and software technologies that promote actionable data capture, improve operating efficiencies, and reduce supply chain risk. Third, we strive to generate strong profits, which produce the cash flow necessary to support our growth, our product and technology development, and the needs of our customers.

The ultimate aim of this 'high-touch, high-tech' approach to gaining market share is to allow us to get closer to our customers, going so far as to be right to the point of consumption within customers' facilities. Marrying our presence, capabilities and technologies deepens our relationships and our understanding of our customers' day-to-day opportunities and obstacles. This, in turn, enhances our ability to provide innovative and comprehensive solutions to our customers' challenges. By doing these things every day, Fastenal remains a growth-centric organization.

Executive Overview

The following table presents a performance summary of our results of operations for the periods ended December 31:

2023 was a year of modest economic contraction in our key markets. The Institute for Supply Management's Purchasing Manager's Index (PMI) for the United States averaged 47.1 for the full year and remained below 50, the threshold demarcating manufacturing growth or contraction, every month. Industrial Production for the United States reflected moderating business activity, with markets that are most relevant to us, such as Fabricated Metals and Machinery, declining at an accelerating rate through the year. In addition, inflation in product costing flattened out, with some deflation emerging in fastener products. The combined effect of these dynamics was to produce dail

Showing the first 8K of 93K characters. Open the full section

We are exposed to certain market risks from changes in foreign currency exchange rates, commodity steel pricing, commodity energy prices, and interest rates. Changes in these factors cause fluctuations in our earnings and cash flows. We evaluate and manage exposure to these market risks as follows:

Import shipping costs – We import a significant quantity of our products, particularly fasteners and private label products, from foreign suppliers, primarily in Asia. As a result, we incur costs related to shipping charges, duties, harbor fees, and sundry other expenses involved in the movement of product for sale in North America and our other global locations. These costs are embedded in our product values, and significant fluctuations can affect our product gross profit depending on what mitigating actions might be taken. The most significant contributor to these fluctuations is the cost of overseas shipping containers. During 2023, the cost of overseas shipping containers was below the prior year. We estimate the effect on our net earnings related to import shipping costs was $23.0 to $28.0 in 2023.

Commodity steel prices – We buy and sell various types of steel products; these products consist primarily of different types of fasteners and related hardware. We are exposed to the impacts of commodity steel pricing and our related ability to pass through the impacts to our end customers. During 2023, the price of steel as reflected in many market indexes has been below prior year levels, though in most cases price levels have stabilized in recent periods and the rate of decline is moderating. Due to our long supply chain, changes in the cost of steel can take a number of quarters to be reflected in our financial results. Further, the cost of the raw material is generally a small part of the total value of the steel products that we sell, which can also diminish the impact of cost changes for the raw material. We estimate the effect on our net earnings related to commodity steel prices was immaterial in 2023.

Commodity energy prices – We have market risk for changes in prices of oil, gasoline, diesel fuel, natural gas, and electricity. As reflected in many market indexes, energy prices during 2023 were generally below prior year levels, which contributed to lower costs for fuel consumed in our vehicles and lower utility costs at our facilities. Total direct fuel consumption is a relatively minor cost to the company and, as a result, we estimate the effect on our net earnings related to commodity energy prices was immaterial in 2023.

Fossil fuels are also often a key feedstock for chemicals and plastics that comprise a key raw material for many products that we sell. During 2023, prices for fossil fuels were generally below prior year levels. The cost of the raw material is generally a small part of the total value of the products that we sell, which can diminish the impact of cost changes for the raw material. As a result, we estimate the effect on our net earnings related to materials for which fossil fuels are a feedstock was immaterial in 2023.

Foreign currency exchange rates – Foreign currency fluctuations can affect our net investments, our operations in countries other than the U.S., and earnings denominated in foreign currencies. Historically, our primary exchange rate exposure has been with the Canadian dollar against the United States dollar. Our estimated net earnings exposure for foreign currency exchange rates was not material at year end. We have not historically hedged our foreign currency risk given that exposure to date has not been material. We estimate the effect on our sales and net earnings related to changes in foreign exchange rates was $18.7 and immaterial, respectively, in 2023.

Interest rates - Loans under our Credit Facility bear interest at floating rates. As a result, changes in such rates can affect our operating results and liquidity to the extent we do not have effective interest rate swap arrangements in place. We have not historically used interest rate swap arrangements to hedge the variable interest rates under our Credit Facility. A one percentage point increase to our floating rate debt in 2023 would have resulted in approximately $0.6 of additional interest expense. A description of our Credit Facility is contained in Note 9 of the Notes to Condensed Consolidated Financial Statements.

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and Board of Directors

Fastenal Company:

Opinions on the Consolidated Financial Statements and Internal Control Over Financial Reporting

We have audited the accompanying consolidated balance sheets of Fastenal Company and subsidiaries (the Company) as of December 31, 2023 and 2022, the related consolidated statements of earnings, comprehensive income, stockholders' equity, and cash flows for each of the years in the three-year period ended December 31, 2023, and the related notes and financial statement schedule II — valuation and qualifying accounts (collectively, the consolidated financial statements). We also have audited the Company's internal control over financial reporting as of December 31, 2023, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the years in the three-year period ended December 31, 2023, in conformity with U.S. generally accepted accounting principles. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2023 based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission.

Basis for Opinions

The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Company's consolidated financial statements and an opinion on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects.

Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions.

Definition and Limitations of Internal Control Over Financial Reporting

A company's internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of a critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Sufficiency of audit evidence over inventory quantities at in-market locations

As disclosed in the consolidated balance sheet, the Company held $1,522.7 million of inventory, the majority of which was held at 3,419 in-market locations, as of December 31, 2023. The Company's processes to track and determine consolidated inventory relies on a perpetual inventory system which involves the interaction of information technology (IT) systems.

We identified the evaluation of the sufficiency of audit evidence obtained related to the quantities of inventory at in-market locations as a critical audit matter. Evaluating the sufficiency of audit evidence over quantities of inventory at in-market locations required challenging auditor judgment to assess the number of in-market locations visited and included the involvement of IT professionals with specialized skills and knowledge due to the interaction of IT systems that track physical inventory quantities by location.

The following are the primary procedures we performed to address this critical audit matter. We evaluated the design and tested the operating effectiveness of certain internal controls related to the critical audit matter. This included IT application controls, as well as certain controls related to access to programs and data, program changes, and computer operations. It also included certain controls related to the Company's physical inventory cycle counts. We involved IT professionals with specialized skills and knowledge, who assisted in testing certain IT controls, inclusive of the interface of IT systems, which support the Company's perpetual inventory system. We applied auditor judgment in the determination of the l

Showing the first 8K of 76K characters. Open the full section

None.

Disclosure Controls and Procedures

As of the end of the period covered by this report, we conducted an evaluation, under the supervision and with the participation of our principal executive officer and principal financial officer, of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934 (the Securities Exchange Act)). Based on this evaluation, the principal executive officer and principal financial officer concluded that our disclosure controls and procedures are effective to ensure that information required to be disclosed by us in reports that we file or submit under the Securities Exchange Act is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms, and is accumulated and communicated to our management, including the principal executive officer and principal financial officer, to allow for timely decisions regarding required disclosure.

Attestation Report of Independent Registered Public Accounting Firm

The attestation report required under Item 9A is contained earlier in this Form 10-K under the heading 'Item 8, Financial Statements and Supplementary Data'.

Management's Annual Report on Internal Control Over Financial Reporting

Our management is responsible for establishing and maintaining adequate internal control over financial reporting as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act. The company's internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with U.S. generally accepted accounting principles. The company's internal control over financial reporting includes those policies and procedures that:

(i)pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company;

(ii)provide reasonable assurance that the transactions are recorded as necessary to permit preparation of financial statements in accordance with U.S. generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and

(iii)provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the company's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Under the supervision of our principal executive officer and our principal financial officer, we conducted an evaluation of the effectiveness of our internal control over financial reporting based on the framework in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on our assessment and those criteria, management believes that the company maintained effective internal control over financial reporting as of December 31, 2023. There was no change in the company's internal control over financial reporting during the company's most recently completed fiscal quarter that has materially affected, or is reasonably likely to materially affect, the company's internal control over financial reporting.

None of our directors or officers (as defined in Rule 16a-1(f) of the Securities Exchange Act) adopted, modified, or terminated any contract, instruction, or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Securities Exchange Act or any non-Rule 10b5-1 trading arrangement (as defined in Item 408(c) of Regulation S-K) during the fiscal quarter ended December 31, 2023.

We are reporting the following information in lieu of reporting on a Current Report on Form 8-K under Item 5.03 "Amendments to Articles of Incorporation or By-laws; Change in Fiscal Year" and Item 9.01 "Financial Statements and Exhibits."

On February 2, 2024, our board of directors amended and restated our by-laws as a result of a periodic review of best practices and the SEC's adoption of the universal proxy rules.

The amendments:

(i)Make certain limited updates to the procedural mechanics for meetings of shareholders and clarify that the chair of a shareholder meeting may adjourn a meeting for any reason;

(ii)Include express authorization of electronic and telephonic proxies and add a requirement that a shareholder soliciting proxies must use a proxy card color other than white, in order to avoid shareholder confusion; and

(iii)Make various other conforming, technical, and non-substantive changes.

The foregoing description of the amended and restated by-laws is not complete and is qualified by reference to the full text of the amended and restated by-laws, a copy of which is filed as Exhibit 3.2 hereto and incorporated herein by reference.

None.

PART III

Incorporated herein by reference is the information appearing under the headings 'Proposal #1—Election of Directors', 'Corporate Governance and Director Compensation—Board Leadership Structure and Committee Membership', 'Corporate Governance and Director Compensation—Other Board and Corporate Governance Matters: Securities Trading Policy', 'Corporate Governance and Director Compensation—Audit Committee', and 'Corporate Governance and Director Compensation—Delinquent Section 16(a) Reports' in the Proxy Statement.

There have been no material changes to the procedures by which security holders may recommend nominees to the board of directors since our last report.

In January 2004, our board of directors adopted a supplement to our existing standards of conduct designed to qualify the standards of conduct as a code of ethics within the meaning of Item 406(b) of Regulation S-K promulgated by the SEC (Code of Ethics). The standards of conduct, as supplemented, apply to all of our directors, officers, and employees, including without limitation our chief executive officer, chief financial officer, principal accounting officer, and controller (if any), and persons performing similar functions (Senior Financial Officers). Those portions of the standards of conduct, as supplemented, that constitute a required element of a Code of Ethics are available without charge by submitting a request to us pursuant to the directions detailed under 'Does Fastenal have a Code of Conduct?' on the 'Investor FAQs' page of the 'Investor Relations' section of our website at www.fastenal.com. In the event we amend or waive any portion of the standards of conduct, as supplemented, that constitutes a required element of a Code of Ethics and such amendment or waiver applies to any of our Senior Financial Officers, we intend to post on our website at www.fastenal.com, within four business days after the date of such amendment or waiver, a brief description of such amendment or waiver, the name of each Senior Financial Officer to whom the amendment or waiver applies, and the date of the amendment or waiver.

Information about our Executive Officers

As of the date of filing this Form 10-K, the following individuals were executive officers of the Company:

Mr. Florness has been our president and chief executive officer since January 2016. From December 2002 to December 2015, Mr. Florness was our executive vice president and chief financial officer. From June 1996 to November 2002, Mr. Florness was our chief financial officer. During his time as chief financial officer, Mr. Florness' responsibilities expanded beyond finance, including leadership of a portion of our manufacturing division, our product development and procurement, and the company's national accounts business. Mr. Florness has served as one of our directors since January 2016.

Mr. Broersma has been our executive vice president – operations since October 2023. Mr. Broersma’s responsibilities include oversight of our supply chain, compliance, supplier development, content, property management, eCommerce, supply to fulfillment distribution, and logistics operations of the company. From June 2022 to October 2023, Mr. Broersma served as our senior vice president – operations. From February 2021 to June 2022, Mr. Broersma was our vice president of procurement and supply chain. From February 2016 to February 2021, Mr. Broersma served as our vice president of international operations, leading all global operations. From December 2012 to February 2016, Mr. Broersma was the regional vice president for our continental Europe locations, while living in the Czech Republic. From February 2011 to December 2012, Mr. Broersma served as the director of Asian operations, while living in Shanghai, China. From December 2007 to February 2011, Mr. Broersma served as the regional operations manager of our distribution center located in Scranton, PA. Mr. Broersma joined Fastenal in 2003 and, prior to 2007, served in various roles of increasing responsibility within our branch locations.

Mr. Drazkowski has been our executive vice president - sales since October 2019. Mr. Drazkowski's responsibilities include oversight of national accounts, government and industry specific sales, support, and development teams. From October 2019 to October 2023, Mr. Drazkowski oversaw our Western United States business. From December 2016 to September 2019, Mr. Drazkowski was executive vice president – national accounts sales. From October 2014 to December 2016, Mr. Drazkowski was our vice president – national accounts sales, from September 2013 to September 2014, he served as regional vice president of our Minnesota based region, and from November 2007 to August 2013, he served as one of our district managers. Prior to November 2007, Mr. Drazkowski served in various sales leadership roles at our company.

Mr. Jansen has been our executive vice president – manufacturing since January 2016. Mr. Jansen's responsibilities include oversight of our industrial services, quality assurance, aerospace, manufacturing operations, and EHS management. From December 2010 to December 2015, Mr. Jansen was our executive vice president - operations. From November 2007 to December 2010, Mr. Jansen was our executive vice president – internal operations. From May 2005 to November 2007, Mr. Jansen served as our leader of systems development (this role encompassed both information systems and distribution systems development). From April 2000 to April 2005, Mr. Jansen served as regional vice president of our Texas based region.

Mr. Lewis has been a senior executive vice president and the chief financial officer of Fastenal since December 2022. As chief financial officer, Mr. Lewis manages the company's finance, accounting, audit, and general counsel functions, and plays a central role in effectively executing and communicating company strategy, with a concentration on profitability, efficiency, and assets. He also oversees the company's M&A and Investor Relations efforts. From August 2016 to December 2022, Mr. Lewis served as our executive vice president and chief financial officer. He joined the company following a long career as a senior equity analyst covering industrials, including Fastenal, for full-service investment banks. Mr. Lewis held various senior roles with a variety of organizations in the investment banking industry from 1994 to July 2016.

Ms. Lisowski has been our executive vice president - chief accounting officer and treasurer since December 2020. From August 2016 to November 2020, Ms. Lisowski was our controller, chief accounting officer, and treasurer. Ms. Lisowski was our controller and chief accounting officer from October 2013 to August 2016, and also served as our interim chief financial officer from January 2016 to August 2016. From March 2007 to October 2013, Ms. Lisowski served as our controller – accounting operations. Ms. Lisowski joined Fastenal in 1994 and, prior to March 2007, served in various roles of increasing responsibility within our finance and accounting team.

Mr. Miller has been our senior executive vice president – sales since January 2020. Mr. Miller's responsibilities include sales and operational oversight of our United States business. From November 2015 to December 2019, Mr. Miller was one of our executive vice presidents – sales. From January 2009 to October 2015, Mr. Miller served as regional vice president of our southeast central region based primarily in Tennessee and Kentucky. Prior to January 2009, Mr. Miller served in various sales leadership roles at our company.

Ms. Oas has been our executive vice president – human resources since February 2023. As executive vice president – human resources, Ms. Oas manages the company's human resources department, which includes payroll, benefits, diversity and compliance, general insurance, and the Fastenal School of Business. From March 2015 to January 2023, she was our director of compliance – human resources. From 2010 to February 2015, Ms. Oas practiced employment law for a firm in Minneapolis, Minnesota and later acted as a solo practitioner in Winona, Minnesota.

Mr. Soderberg has been our senior executive vice president – information technology since December 2020. From May 2016 to November 2020, Mr. Soderberg was our executive vice president – information technology. From May 2014 to May 2016, Mr. Soderberg served as our executive vice president – sales operations and support. From April 2010 to May 2014, Mr. Soderberg was one of our vice presidents – sales. From April 2005 to April 2010, Mr. Soderberg served as regional vice president of our Seattle, Washington based region. Prior to April 2005, Mr. Soderberg served in various sales leadership roles in the mid-Atlantic area of our company.

Mr. Watts has been our chief sales officer since May 2023. Mr. Watts' responsibilities include providing oversight and guidance concerning the global sales activities of the company. From December 2016 to April 2023, Mr. Watts was our executive vice president – international sales. From March 2015 to December 2016, Mr. Watts was our vice president – international sales. From June 2005 to February 2015, he served as regional vice president of our Canadian region. Prior to June 2005, Mr. Watts served in various sales leadership roles at our company.

The executive officers are elected by our board of directors for a term of one year and serve until their successors are elected and qualified. None of our executive officers is related to any other such executive officer or to any of our directors.

Incorporated herein by reference is the information appearing under the headings 'Corporate Governance and Director Compensation—Compensation Committee Interlocks and Insider Participation', 'Executive Compensation', and 'Corporate Governance and Director Compensation—Compensation of our Directors' in the Proxy Statement.

Incorporated herein by reference is the information appearing under the heading 'Security Ownership of Principal Shareholders and Management' in the Proxy Statement.

Equity Compensation Plan Information

Incorporated herein by reference is the information appearing under the headings 'Corporate Governance and Director Compensation—Director Independence', 'Corporate Governance and Director Compensation—Related Person Transaction Approval Policy', and 'Corporate Governance and Director Compensation—Transactions with Related Persons' in the Proxy Statement.

Incorporated herein by reference is the information appearing under the heading 'Audit and Related Matters—Audit and Related Fees' and 'Audit and Related Matters—Pre-Approval of Services' in the Proxy Statement.

PART IV

INDEX TO EXHIBITS

• Management contract or compensatory plan or arrangement required to be filed as an exhibit to this Form 10-K pursuant to Item 15(b).

FASTENAL COMPANY

Schedule II—Valuation and Qualifying Accounts

Years ended December 31, 2023, 2022, and 2021

(Amounts in millions)

(1) Includes costs and expenses incurred for premiums and claims related to health and general insurance.

(2) Includes costs and expenses paid for premiums and claims related to health and general insurance.

See accompanying Report of Independent Registered Public Accounting Firm incorporated herein by reference.

Not applicable.

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the date indicated.