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ITEM 1A.RISK FACTORS

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

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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.

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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.

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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

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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

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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

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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.

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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.

ITEM 1B.UNRESOLVED STAFF COMMENTS

None.

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ITEM 1C. CYBERSECURITY

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.

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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.

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ITEM 2. PROPERTIES

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:

Location Purpose Leased Tote Locations (ASRS)(1) ApproximateSquare Feet

Winona, Minnesota Distribution center and home office 246,000 331,000

Jackson, Mississippi Distribution center — 271,000

Kitchener, Ontario, Canada Distribution center 128,000 242,000

Edmonton, Alberta, Canada Distribution center X — 38,000

Apodaca, Nuevo Leon, Mexico Distribution center X — 46,000

Dordrecht, Netherlands Distribution center X — 39,000

Saint Helens, United Kingdom Distribution center X — 14,000

Shanghai, China Local re-distribution center X — 12,000

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

Location Purpose Leased ApproximateSquare Feet

Winona, Minnesota Manufacturing facility 121,000

Indianapolis, Indiana Manufacturing facility 198,000

Houston, Texas Manufacturing facility 122,000

Wallingford, Connecticut Manufacturing facility 177,000

Rockford, Illinois Manufacturing facility 101,000

Johor, Malaysia Manufacturing facility 30,000

Brno-Lisen, Czech Republic Manufacturing facility X 20,000

Leeds, United Kingdom Manufacturing facility X 28,000

Bangalore, India International information technology office X 45,000

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.

ITEM 3.LEGAL PROCEEDINGS

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

ITEM 4.MINE SAFETY DISCLOSURES

Not applicable.

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PART II

ITEM 5.MARKET FOR REGISTRANT'S COMMON EQUITY, RELATED STOCKHOLDER MATTERS, AND ISSUER PURCHASES OF EQUITY SECURITIES

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:

(a) (b) (c) (d)

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'.

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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.

ITEM 6.RESERVED

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ITEM 7.MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

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 InnovationTM. 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.

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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 daily sales growth in 2023 that slowed appreciably from 2022. We continued to migrate to a key accounts-focused model, expand our Onsite footprint, grow our installed base of FMI hardware, and lift the proportion of sales that run through our Digital Footprint. The efficiencies these investments provide and good organizational control of discretionary expenses allowed us to achieve a stable operating profit margin despite the challenges stemming from this slower and less inflationary environment. We also produced record operating cash flow which, combined with our confidence in the future cash generation capability of our business model, allowed us to pay a supplemental fifth dividend in the fourth quarter of 2023.

The table below summarizes our absolute and full-time equivalent (FTE; based on 40 hours per week) employee headcount, our investments related to in-market locations (defined as the sum of the total number of branch locations and the total number of active Onsite locations), and weighted FMI devices at the end of the periods presented and the percentage change compared to the end of the prior period.

Selling personnel - absolute employee headcount 16,512 15,898 3.9 %

Selling personnel - FTE employee headcount 15,070 14,476 4.1 %

Total personnel - absolute employee headcount 23,201 22,386 3.6 %

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During the last twelve months, we increased our total FTE employee headcount by 867. This reflects an increase in our total FTE selling personnel of 594 to support growth in the marketplace and sales initiatives targeting customer acquisition. We had an increase in our distribution and transportation FTE personnel of 124 to support increased product throughput at our facilities and to expand our local inventory fulfillment terminals (LIFTs). We had an increase in our remaining FTE personnel of 149 that relates primarily to personnel investments in information technology, manufacturing, and operational support, such as purchasing and product development.

The table below summarizes the number of branches opened and closed, net of conversions, as well as the number of Onsites activated and closed, net of conversions during the periods presented.

Twelve-month Period

Branch openings 10 12

Branch closures, net of conversions (96) (122)

Onsite closures, net of conversions (130) (99)

Our in-market network forms the foundation of our business strategy. In recent years, we have seen a gradual increase in our in-market locations because of significant growth in Onsites and, to a lesser degree international branches, which has more than overcome a meaningful decline in our traditional branch network. In any period, the number of locations closed tends to reflect normal churn in our business, whether due to redefining or exiting customer relationships, the shutting or relocation of customer facilities that host our locations, or a customer decision, as well as our ongoing review of underperforming locations. We will continue to open or close locations to sustain and improve our network, support our growth drivers, and manage our operating expenses. However, we believe the strategic rationalization that has produced the meaningful decline in our traditional branch network in the United States and Canada since 2013 is largely completed, and we expect reduced closing activity beginning in 2024.

CURRENT YEAR RESULTS ENDED 2023

Results of Operations

The following table sets forth consolidated statements of earnings information (as a percentage of net sales) for the periods ended December 31:

Operating and administrative expenses 24.9 % 25.2 %

Net interest expense -0.1 % -0.2 %

Earnings before income taxes 20.7 % 20.6 %

Note – Amounts may not foot due to rounding difference.

Sales

The table below sets forth net sales and daily sales for the periods ended December 31, and changes in such sales from the prior period to the more recent period:

Percentage change 5.2 % 16.1 %

Percentage change 5.7 % 15.7 %

Daily sales impact of currency fluctuations -0.3 % -0.5 %

The increase in net sales noted above for 2023 was due to higher unit sales of MRO, OEM, and construction supplies, as well as higher pricing as further set forth below.

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We believe higher unit sales in 2023 were primarily a result of our ability to gain market share, as most measures of industrial activity were flat to down throughout the period. Despite this challenging environment, in 2023 we produced net sales growth of 5.2% and, owing to one fewer selling day in the period, daily sales growth of 5.7%. Growth was led by our transportation customers, which includes sales to transportation services customers as the warehousing operations of retailer-oriented customers, and manufacturing end markets, which benefit disproportionately from our shift to a key account model. Our non-residential construction and reseller customers contracted during the period, which we believe is due to our shift to a key account model which tends to de-emphasize walk-in, over-the-counter, and infrequent transactions.

Price contributed 160 to 190 basis points to our net sales growth in 2023. This contribution to growth from price was primarily due to easier comparisons in the first six months of 2023. For instance, in the first six months of 2023 contribution to growth from price averaged 240 to 270 basis points, while in the third and fourth quarters of 2023 contribution to growth from price averaged 110 to 140 basis points and 50 to 80 basis points, respectively.

We increased total Onsite locations, the installed base of FMI devices, and our Digital Footprint in 2023, which enhanced the value we provide to our customers and supported our growth and efficiency. The rate of penetration we achieved with these growth drivers was uneven, however. We signed 326 Onsites in 2023, below our goal at the start of 2023 of 375 to 400 units and slightly below the prior year signings of 356 units. We signed 24,126 FMI MEUs, meeting our goal at the start of 2023 of 23,000 to 25,000 MEUs and meaningfully above the prior year signings of 20,735 MEUs. We expanded the proportion of our sales running through our Digital Footprint to 56.1%, below our goal at the start of 2023 of 65.0% but above the prior year level of 49.3%.

Sales by Product Line

From a product standpoint, we have three categories: fasteners, safety supplies, and other product lines, the latter of which includes eight smaller product categories, such as tools, janitorial supplies, and cutting tools. The percent of sales in the periods below were as follows:

Other product lines 46.4 % 45.2 %

The shifts in product mix in 2023 compared to 2022 are largely attributable to two factors. First, fasteners are more heavily oriented toward production of final goods than maintenance, which results in greater susceptibility to periods of weaker industrial production. Second, pricing for fasteners has decelerated at a faster pace than non-fastener products. These dynamics produced a meaningful divergence in the daily sales growth rates of our fastener versus our non-fastener product lines in 2023.

Annual Sales Changes, Sequential Trends, and End Market Performance

This section focuses on three distinct views of our business – annual sales changes by month, sequential trends, and end market performance. The first discussion regarding sales changes by month provides a good mechanical view of our business. The second discussion provides a framework for understanding the sequential trends (that is, comparing a month to the immediately preceding month, and also looking at the cumulative change from an earlier benchmark month) in our business. Finally, we believe the third discussion regarding end market performance provides insight into activities with our various types of customers.

Annual Sales Changes, by Month

During the months noted below, all of our selling locations, when combined, had a DSR change of (compared to the same month in the preceding year):

Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec.

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Sequential Trends

We find it helpful to think about the monthly sequential changes in our business using the analogy of climbing a stairway – This stairway has several predictable landings where there is a pause in the sequential gain (i.e. April, July, and October to December), but generally speaking, climbs from January to October. The October landing then establishes the benchmark for the start of the next year.

History has identified these landings in our business cycle. They generally relate to months where certain holidays impair business days and/or seasons impact certain end markets, particularly non-residential construction. The first landing centers on Easter and the Good Friday holiday that precedes it, which in any given year can fall in March or April, the second landing centers on July 4th, and the third landing centers on the approach of winter with its seasonal impact on primarily our non-residential construction business and with the Christmas/New Year holidays. The holidays we noted impact the trends because they either move from month-to-month or because they move around during the week.

The table below shows the pattern to the sequential change in our daily sales. The line labeled 'Benchmark' is a historical average of our sequential daily sales change for the trailing five year average that excludes 2020. We have excluded 2020 from the average as the effects of the pandemic created unusual sequential patterns that we do not consider representative of normal trends. We believe this time frame serves to show the historical pattern and could serve as a benchmark. The '2023' and '2022' lines represent our actual sequential daily sales changes. The '23Delta' and '22Delta' lines indicate the difference between the 'Benchmark' and the actual results in the respective year. Under normal circumstances, the sequential trends shown below are directly linked to fluctuations in our end markets. Further, in any given month it is possible to get significant deviation from the benchmark.

It is important to note that these benchmarks are historical averages. In a year where demand is strong, our daily sales growth rates will tend to have more months that exceed the benchmark than fall below it. In a year where demand is weak, we will tend to have more months that fall short of the benchmark than exceed it. In both cases, there is a random element that makes it difficult to know how any single month will perform.

Note – Amounts may not foot due to rounding difference.

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A graph of the sequential daily sales change patterns discussed above, starting with a base of '100' in the previous October and ending with the next October, would be as follows:

End Market Performance

We estimate approximately 70% to 75% of our business is with customers engaged in some type of manufacturing, a significant subset of which finds its way into the heavy equipment market. The DSR change to our manufacturing customers, when compared to the same period in the prior year, was as follows:

DSR change - manufacturing customers Q1 Q2 Q3 Q4 Annual

We estimate approximately 25% to 30% of our business is with customers engaged in a wide range of activities, none of which individually constitute 10% of sales. This includes non-residential construction, reseller, transportation, and government customers. The DSR change to these remaining non-manufacturing customers, when compared to the same period in the prior year, was as follows:

DSR change - non-manufacturing customers Q1 Q2 Q3 Q4 Annual

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Product Performance

Our products fall into two functional subsets: (1) original equipment manufacturing (OEM) parts, which become part of a customer's finished good and (2) maintenance, repair, and operation (MRO), which maintain the facilities and equipment used by our customers.

While certain products in our other product categories have an OEM application, such as welding consumables or metal cutting carbides, the majority of our sales for OEM applications are of fasteners. As a result, the best way to understand the change in our production business is to examine the results in our fastener product line (which represents 30% to 35%of our business). From a company perspective, the DSR change of fasteners, when compared to the same period in the prior year, was as follows (note: this information includes all end markets):

DSR change - fasteners Q1 Q2 Q3 Q4 Annual

By contrast, while we do sell significant quantities of MRO fasteners, the best way to understand the change in our MRO business is to examine the results in our non-fastener product lines, which include safety, tools, janitorial, and other products. From a company perspective, the DSR change of non-fasteners, when compared to the same period in the prior year, was as follows (note: this information includes all end markets):

DSR change - non-fasteners Q1 Q2 Q3 Q4 Annual

Our non-fastener business is not immune to the impact of industrial cycles, but because it is more dependent on whether a facility is operating than how much product that facility is producing, it does tend to exhibit less volatility in its growth than our fastener business. We also expect growth of our non-fastener products to outperform growth of our fastener products over the course of a cycle. This reflects three things: the non-fastener market is larger than the fastener market, we are under penetrated in the non-fastener market relative to the fastener market, and industrial vending lends itself to sales of non-fastener products.

Gross Profit

The gross profit percentage during each period was as follows:

Our gross profit, as a percentage of net sales, was 45.7% in 2023 and 46.1% in 2022. This decrease was primarily related to two factors. First, in 2023 customer and product mix had a negative effect on our gross profit percentage. We continued to experience relatively strong growth from larger customers, including Onsites, and non-fastener products, each of which tend to have a lower gross profit percentage than our business as a whole. Second, we had higher organizational/overhead costs, including from higher inbound freight costs and working capital needs being relieved from inventory and generating higher period costs. These negative effects were partly offset by favorable freight costs, which reflects elevated domestic freight revenue leveraging what are relatively stable costs to support our captive fleet, lower expenses related to external freight providers, and lower fuel costs.

Operating and Administrative Expenses

Our operating and administrative expenses, as a percentage of net sales, improved to 24.9% in 2023 from 25.2% in 2022. This primarily reflected improvement, as a percentage of net sales, in employee-related expenses as bonuses and commissions were down as a result of slower sales and profit growth in 2023 versus the prior year.

The percentage change in employee-related, occupancy-related, and all other operating and administrative expenses compared to the same periods in the preceding year, is outlined in the table below.

Employee-related expenses 70% to 75% 3.4 % 14.7 %

Occupancy-related expenses 15% to 20% 4.2 % 2.6 %

All other operating and administrative expenses 10% to 15% 4.2 % 18.5 %

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Employee-related expenses include: (1) payroll (which includes cash compensation, stock option expense, and profit sharing), (2) health care, (3) personnel development, and (4) social taxes.

Our employee-related expenses increased in 2023 from 2022. This was related to higher base pay and employment taxes as a result of increased FTE during the period and moderate wage inflation. This was partly offset by a decline in bonuses reflecting slower sales and profit growth versus the prior year.

The table below summarizes the percentage change in our FTE headcount at the end of the periods presented compared to the end of the prior period:

Twelve-month Period

Selling personnel (1) 4.1 % 7.9 %

Distribution/Transportation personnel 4.2 % 8.4 %

Manufacturing personnel 0.1 % 12.4 %

Organizational support personnel (2) 8.6 % 9.5 %

Total personnel 4.4 % 8.3 %

Occupancy-related expenses include: (1) building rent and depreciation, (2) building utility costs, (3) equipment related to our branches and distribution locations, and (4) industrial vending equipment and bins utilized as part of FMI services (we consider this hardware to be a logical extension of our in-market operations and classify the depreciation and repair costs as occupancy expenses).

Our occupancy-related expenses increased in 2023 from 2022. This was related to: slightly higher depreciation and expenses related to a higher installed base of our FMI suite of technologies; moderately higher costs and depreciation for the maintenance, upgrade, and installation of equipment in hub and non-hub facilities; and a slight rise in branch rents related to higher inflation and branch size.

All other operating and administrative expenses include: (1) selling-related transportation, (2) information technology (IT) expenses, (3) general corporate expenses, which consists of legal expenses, general insurance expenses, travel and marketing expenses, etc., and (4) sales of property and equipment.

Combined, all other operating and administrative expenses increased in 2023 from 2022. This was related to: higher spending on information technology; higher general insurance costs; increased spending on travel and supplies; and higher bad debt expense. These elements were only partly offset by increased contributions from our supplier collaboration programs and increased income from asset sales related to our field truck fleet.

Net Interest

Our net interest expense was $6.7 in 2023 compared to $13.6 in 2022. We carried lower average debt balances in 2023 relative to the prior year, with cash generated from working capital reductions enabling us to reduce outstanding revolver debt under our Credit Facility. This was only partly offset by slightly higher average rates against borrowings under our Credit Facility due to changing interest rate levels in the marketplace. We also generated higher interest income in 2023 relative to the prior year.

Income Taxes

We recorded income tax expense of $367.0 in 2023, or 24.1% of earnings before income taxes, compared to $353.1 in 2022, or 24.5% of earnings before income taxes. The decrease in our tax rate in 2023 is due primarily to an increase in the tax benefit associated with the exercise of stock options.

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Net Earnings

Net earnings, net earnings per share (EPS), the percentage change in net earnings, and the percentage change in EPS, were as follows:

During 2023, net earnings per share increased, primarily due to higher sales, lower net interest expense, a lower tax rate, and lower average fully diluted shares outstanding as a result of our buying back shares in 2022.

Liquidity and Capital Resources

Net Cash Provided by Operating Activities

Net cash provided by operating activities in dollars and as a percentage of net earnings were as follows:

In 2023, we experienced an increase in our operating cash flow as a percentage of net earnings. The improvement in operating cash flow in 2023, as a percent of net earnings, reflects the reduced demand for working capital as a result of an improved supply chain and, to a lesser degree, slower business activity relative to the prior year.

Trade Working Capital Assets

The following table sets forth the dollar and percentage change in accounts receivable, net, inventories, and accounts payable for the period ended December 31:

Twelve-month Dollar Change Twelve-month Percentage Change

Net sales in last three months $ 1,758.6 63.0 3.7 %

Note – Amounts may not foot due to rounding difference.

In 2023, the annual growth in net accounts receivable is primarily attributable to three factors. First, our receivables increased as a result of growth in sales to our customers. Second, we continue to experience a shift in our mix due to relatively stronger growth from national account customers, which tend to carry longer payment terms than our non-national account customers. Third, and to a lesser degree, customers have historically delayed payments at the end of years that are economically challenged, and we saw that effect in 2023.

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Our inventory balances over time will respond to business activity, though various factors produce a looser relationship to our monthly sales patterns than we tend to experience in accounts receivable. One reason for this is because it is cyclical. We source significant quantities of product from overseas, and the lead time involved in procuring these products is typically longer than the visibility we have into future monthly sales patterns. As a result, trends in our inventory will often lag trends in economic conditions. A second reason relates to product cost and the length of our supply chain. A significant proportion of our products, particularly fasteners, are sourced from Asia and transported primarily by ship and rail to our North American network for sale. This requires us to purchase a meaningful quantity of our products months in advance of those products being available for sale in our North American facilities. Product that is in transit is in our inventory but is not available for sale, which can create a lag in our ability to adjust inventory levels or costs in response to rapid changes in economic or cost conditions. A third reason for increases in our inventory balances is our growth drivers, including our FMI offerings, Onsite channel, and international expansion, all of which tend to require significant investments in inventory.

In 2023, our inventories decreased, reflecting the absence of supply chain disruptions from the prior year. Our response at the time was to deepen our inventory as a means of maintaining high service to our customers, particularly for imported inventory. Dissipation of these disruptions has allowed us to shorten our product ordering cycle. It is also likely that slower business activity reduced the level of inventory our customers required us to maintain to meet their production needs.

In 2023, the annual growth in accounts payable was primarily attributable to our product purchases increasing to support the growth in our business. The growth in our accounts payable balance is below the growth in our sales, which reflects the dissipation of supply chain disruptions from the prior year. This allowed us to shorten our product ordering cycle in 2023 versus 2022.

The approximate percentage mix of inventory stocked at our selling locations versus our distribution center and manufacturing locations was as follows at year end:

Selling locations 64 % 58 %

Distribution center and manufacturing locations 36 % 42 %

Lease Obligations

We have facilities, equipment, and vehicles leased under operating leases. A discussion of our lease obligations is contained in Note 8 of the Notes to Consolidated Financial Statements.

Net Cash Used in Investing Activities

Net cash used in investing activities in dollars and as a percentage of net earnings were as follows:

% of net earnings 14.0 % 15.0 %

Our net cash used in investing activities in 2023 was comparable to 2022 and primarily related to investments for net capital expenditures.

Property and equipment expenditures typically consist primarily of: (1) purchases related to industrial vending, (2) purchases of property and equipment related to expansion of and enhancements to distribution centers, (3) spending on software and hardware for our information processing systems, (4) the addition of fleet vehicles, (5) expansion, improvement or investment in certain owned or leased branch properties, and (6) the addition of manufacturing and warehouse equipment. Proceeds from the sales of property and equipment, typically for the planned disposition of pick-up trucks as well as distribution vehicles and trailers in the normal course of business, are netted against these purchases and additions.

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Set forth below is a recap of our 2023 and 2022 net capital expenditures in dollars and as a percentage of net sales and net earnings:

Data processing software and equipment 33.4 30.6

Real estate and improvements to branch locations 7.0 12.4

Purchases of property and equipment 172.8 173.8

Proceeds from sale of property and equipment (12.2) (11.4)

% of net sales 2.2 % 2.3 %

% of net earnings 13.9 % 14.9 %

Our net capital expenditures in 2023 were comparable to 2022, though they were below our original expectations for net capital investment during the year. The slower business environment in 2023 reduced the need to purchase certain equipment at the pace originally anticipated. We also saw the timing of certain outlays pushed out and, to a lesser extent, longer lead times on certain materials. It does not reflect the cancellation of any significant initiatives, and much of the spending is expected to occur in 2024 when we see our investment in property and equipment, net of proceeds from sales, being in a range of $225.0 to $245.0. This increase reflects spending to complete our Utah distribution center, investments in picking technology and equipment in our hubs and branches, higher outlays for FMI hardware reflecting our higher targeted signings and a slight build in device inventory, and an increase in spending on information technology.

Net Cash Used in Financing Activities

The increase in net cash used in financing activities reflects higher dividend payments, including a supplemental payment in December of 2023, and a reduction in our outstanding debt obligations. These uses of cash were only partly offset by the absence of common stock purchases that we made in the prior year and, to a lesser degree, the exercise of stock options. Net cash used in financing activities in dollars and as a percentage of earnings were as follows:

% of net earnings 88.0 % 65.4 %

Purchases of common stock — 237.8

% of net earnings — % 21.9 %

Total returned to shareholders $ 1,016.8 949.1

% of net earnings 88.0 % 87.3 %

Proceeds from the exercise of stock options $ (30.1) (9.2)

% of net earnings -2.6 % -0.8 %

Debt obligations payments (proceeds), net $ 295.0 (165.0)

% of net earnings 25.5 % -15.2 %

Stock Purchases

In 2023, we did not purchase any of our common stock. In 2022, we purchased 5,000,000 shares of our common stock at an average price of approximately $47.58 per share.

We have authority to purchase up to 6,200,000 additional shares of our common stock under the July 12, 2022 authorization. This authorization does not have an expiration date.

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Dividends

We declared a quarterly dividend of $0.39 per share on January 17, 2024. In 2023, we paid aggregate annual dividends per share of $1.78. This included $1.40 per share in regular quarterly dividends and a $0.38 per share special dividend paid in December 2023 reflecting what was at the time our high cash balances, as well as our favorable outlook for future cash generation. In 2022, we paid aggregate annual dividends per share of $1.24.

Debt

In order to fund the considerable cash needed to expand our industrial vending business, expand capacity and increase the use of automation in our distribution centers, pay dividends, we have borrowed under our Credit Facility and our Master Note Agreement in recent periods.

Our borrowings under the Credit Facility and Master Note Agreement peaked during each quarter of 2023 as follows:

First quarter $ 565.0

As of December 31, 2023, we had $0.0 outstanding under the Credit Facility and had contingent obligations from letters of credit outstanding under the Credit Facility in an aggregate face amount of $32.7. As of December 31, 2023, we had loans outstanding under the Master Note Agreement of $260.0. Descriptions of our Credit Facility and Master Note Agreement are contained in Note 9 of the Notes to Consolidated Financial Statements.

Material Cash Requirements

Our material cash requirements for known contractual obligations include capital expenditures, debt, and lease obligations, each of which are discussed in more detail earlier in this section. We believe that net cash provided by operating activities will be adequate to meet our liquidity and capital needs for these items in the short-term over the next 12 months and also in the long-term beyond the next 12 months. We also have cash requirements for purchase orders and contracts for the purchase of inventory and other goods and services, which are based on current distribution needs and are fulfilled by our suppliers within short time horizons. We do not have significant agreements for the purchase of inventory or other goods or services specifying minimum order quantities. In addition, we may have liabilities for uncertain tax positions but we do not believe any of these liabilities will be material. A discussion of income taxes is contained in Note 7 of the Notes to Consolidated Financial Statements.

Unremitted Foreign Earnings

Approximately $213.2 of cash and cash equivalents were held by non-U.S. subsidiaries on December 31, 2023. These funds may create foreign currency translation gains or losses depending on the functional currency of the entity holding the cash. We have considered the financial requirements of each foreign subsidiary and our parent company and will continue to reinvest these funds to support our expansion activities outside the U.S., even after taking into consideration the deemed repatriation and transition tax under the Tax Cuts and Jobs Act. The income tax impact of repatriating cash associated with investments in foreign subsidiaries is discussed in Note 7 of the Notes to Consolidated Financial Statements.

Effects of Inflation

In 2023, we observed easing in inflationary pressures for metals (especially steel), energy, and transportation services (especially overseas containers and shipping) resulting in stable costs for most of our product offering. As a result, we did not institute any broad pricing actions through 2023 and we saw our contribution to growth in daily sales due to price moderate throughout the year. The exception to this stability was cost deflation for imported goods, which resulted in modest price deflation specifically in our fastener product line over the course of the year. The net effect on our gross profit percentage of these trends in cost and price inflation was immaterial in 2023.

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PRIOR YEAR RESULTS ENDED 2022

Results of Operations

The following table sets forth consolidated statements of earnings information (as a percentage of net sales) for the periods ended December 31:

Operating and administrative expenses 25.2 % 26.0 %

Net interest expense -0.2 % -0.2 %

Earnings before income taxes 20.6 % 20.1 %

Note – Amounts may not foot due to rounding difference.

Sales

The table below sets forth net sales and daily sales for the periods ended December 31, and changes in such sales from the prior period to the more recent period:

Percentage change 16.1 % 6.4 %

Percentage change 15.7 % 7.3 %

Daily sales impact of currency fluctuations -0.5 % 0.6 %

The increase in net sales noted above for 2022 was due to higher unit sales of MRO and OEM supplies to traditional manufacturing and construction customers and higher pricing as further set forth below.

Higher unit sales in 2022 were a result of healthy economic activity throughout the period, though we did observe some moderation in demand as the year progressed. This moderation in demand, combined with more difficult year-over-year comparisons as the year progressed, produced daily sales growth of 18.1% in the first half of 2022, daily sales growth of 13.3% in the second half of 2022, and daily sales growth of 8.0% in December 2022. Growth was led by our manufacturing customers, with particular strength in markets involved with commodity and capital goods production. Our non-residential construction customers grew on an annual basis, but turned slightly negative in the fourth quarter. We believe the relative underperformance of this customer category reflects deliberate shifts in our branch strategy that de-emphasized walk-in and over-the-counter transactions.

We also experienced a normalization in other aspects of the operating environment in 2022, specifically the dissipation or moderation over the course of the year of product and transportation inflation, supply chain disruption, and labor market constraints. This affected two aspects of our growth during the period.

First, price contributed 540 to 570 basis points to our net sales growth in 2022. However, as inflationary pressures eased and product availability improved, the need for aggressive pricing actions declined. The absence of such actions combined with more difficult year-over-year comparisons as the year progressed resulted in the contribution from price to net sales growth moderating, from averaging 620 to 650 basis points in the first half of 2022, to averaging 450 to 480 basis points in the second half of 2022 and to averaging 350 to 380 basis points in the fourth quarter of 2022.

Second, as inflationary pressures and supply chain constraints became more predictable and manageable and then largely dissipated, it allowed our customers to shift from short-term business management to long-term strategic planning. This, in turn, provided us more opportunities to engage with customers over our key growth drivers, including Onsite and FMI. As a result, while we did not reach the signings goals we had set out at the start of the year, we saw a meaningful increase in signings in 2022 over the prior year, and a return to near pre-pandemic levels. We signed 356 Onsites in 2022, below our goal of 375 to 400 units but above the prior year (274 signings). Similarly, we signed 20,735 FMI MEUs, below our goal of 23,000 to 25,000 MEUs but above the prior year (19,311 MEUs).

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Sales by Product Line

From a product standpoint, we have three categories: fasteners, safety supplies, and other product lines, the latter of which includes eight smaller product categories, such as tools, janitorial supplies, and cutting tools. The percent of sales in the periods below were as follows:

Other product lines 45.2 % 45.5 %

The shifts in product mix in 2022 compared to 2021 largely reflect the reversal of pandemic-related activity combined with the relative growth of our more cyclical fastener line as growth in manufacturing and construction end markets accelerated as the post-pandemic North American economy recovered.

Annual Sales Changes, Sequential Trends, and End Market Performance

This section focuses on three distinct views of our business – annual sales changes by month, sequential trends, and end market performance. The first discussion regarding sales changes by month provides a good mechanical view of our business. The second discussion provides a framework for understanding the sequential trends (that is, comparing a month to the immediately preceding month, and also looking at the cumulative change from an earlier benchmark month) in our business. Finally, we believe the third discussion regarding end market performance provides insight into activities with our various types of customers.

Annual Sales Changes, by Month

During the months noted below, all of our selling locations, when combined, had a DSR change of (compared to the same month in the preceding year):

Jan. Feb. Mar. Apr. May June July Aug. Sept. Oct. Nov. Dec.

Sequential Trends

The table below shows the pattern to the sequential change in our daily sales. The line labeled 'Benchmark' is a historical average of our sequential daily sales change for the trailing five year average that excludes 2020. We have excluded 2020 from the average as the effects of the pandemic created unusual sequential patterns that we do not consider representative of normal trends. We believe this time frame serves to show the historical pattern and could serve as a benchmark. The '2022' and '2021' lines represent our actual sequential daily sales changes. The '22Delta' and '21Delta' lines indicate the difference between the 'Benchmark' and the actual results in the respective year. Under normal circumstances, the sequential trends shown below are directly linked to fluctuations in our end markets. Further, in any given month it is possible to get significant deviation from the benchmark.

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It is important to note that these benchmarks are historical averages. In a year where demand is strong, our daily sales growth rates will tend to have more months that exceed the benchmark than fall below it. In a year where demand is weak, we will tend to have more months that fall short of the benchmark than exceed it. In both cases, there is a random element that makes it difficult to know how any single month will perform.

Note – Amounts may not foot due to rounding difference.

A graph of the sequential daily sales change patterns discussed above, starting with a base of '100' in the previous October and ending with the next October, would be as follows:

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End Market Performance

The DSR change to our manufacturing customers, when compared to the same period in the prior year, was as follows:

DSR change - manufacturing customers Q1 Q2 Q3 Q4 Annual

The DSR change to these remaining non-manufacturing customers, when compared to the same period in the prior year, was as follows:

DSR change - non-manufacturing customers Q1 Q2 Q3 Q4 Annual

Product Performance

From a company perspective, the DSR change of fasteners, when compared to the same period in the prior year, was as follows (note: this information includes all end markets):

DSR change - fasteners Q1 Q2 Q3 Q4 Annual

From a company perspective, the DSR change of non-fasteners, when compared to the same period in the prior year, was as follows (note: this information includes all end markets):

DSR change - non-fasteners Q1 Q2 Q3 Q4 Annual

Two product lines, safety and janitorial, accounted for approximately 44% of total non-fastener sales in 2022. The pattern in 2021, and particularly the second quarter of 2021, was affected by difficult comparisons versus the prior year, when the onset of the COVID-19 pandemic resulted in a surge of safety and janitorial supplies that was not repeated to the same degree in 2022. Setting aside the unique circumstances surrounding the pandemic, our non-fastener business is not immune to the impact of industrial cycles. However, we would typically expect it to outperform our fastener business over the course of a cycle. This reflects three things: the non-fastener market is larger than the fastener market, we are under penetrated in the non-fastener market relative to the fastener market, and industrial vending lends itself to sales of non-fastener products.

Gross Profit

The gross profit percentage during each period was as follows:

Our gross profit, as a percentage of net sales, was 46.1% in 2022 and 46.2% in 2021, a decrease of 10 basis points. This decrease was primarily related to three factors. First, in 2022 we experienced relatively higher growth from our large and Onsite customers, which tend to have a lower gross margin percentage than the business as a whole. This was only partly offset by favorable product mix resulting from relatively higher growth from our fasteners products during the year, which tend to have a higher gross margin percentage than the business as a whole. Second, in the second half of 2022, we did not pass through pricing sufficient to offset higher costs, which resulted in an adverse impact on our gross margin percentage. Third, in the second half of 2022, we experienced lower product margins for certain categories of our other products. We believe slower demand and greater product availability in the marketplace due to supply chain normalization has put some pressure on products that tend to be sold less frequently by our business units. These factors were mostly offset by a reduction in the amount of pandemic-related write-downs and narrower losses to operate our truck fleet related to our strong freight revenue growth leveraging relatively stable fleet costs.

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Operating and Administrative Expenses

Our operating and administrative expenses, as a percentage of net sales, decreased to 25.2% in 2022 from 26.0% in 2021. This reflected a decline, as a percentage of net sales, in employee- and occupancy-related expenses.

The percentage change in employee-related, occupancy-related, and all other operating and administrative expenses compared to the same periods in the preceding year, is outlined in the table below.

Occupancy-related expenses 15% to 20% 2.6 % 3.9 %

All other operating and administrative expenses 10% to 15% 18.5 % 4.9 %

Our employee-related expenses increased in 2022 from 2021. This was related to: higher base pay and employment taxes from higher FTE during the period and moderate wage inflation; an increase in bonuses and commissions resulting from improved sales and profitability; and an increase in our profit sharing contribution. This was partly offset by a decline in health insurance costs, as the use of medical services by employees normalized following the post-pandemic catch-up activity in 2021.

The table below summarizes the percentage change in our FTE headcount at the end of the periods presented compared to the end of the prior period:

Twelve-month Period

Selling personnel (1) 7.9 % 1.7 %

Distribution/Transportation personnel 8.4 % 5.8 %

Manufacturing personnel 12.4 % 2.0 %

Organizational support personnel (2) 9.5 % 7.4 %

Total personnel 8.3 % 2.8 %

Our occupancy-related expenses increased in 2022 from 2021. This was related to: higher costs and depreciation for the maintenance, upgrade and installation of equipment in hub and non-hub facilities; slightly higher depreciation related to a higher installed base of our FMI suite of technologies; and slightly higher facility costs, with higher utility costs being only partly offset by lower rents stemming from branch consolidations.

Combined, all other operating and administrative expenses increased in 2022 from 2021. This was related to: higher costs related to selling-related transportation, including higher fuel costs; higher spending on information technology; higher spending on travel, meals, and supplies; and higher general insurance expense. These elements were only partly offset by lower bad debt expense.

Net Interest Expense

Our net interest expense was $13.6 in 2022 compared to $9.6 in 2021. We carried higher average debt balances in 2022 relative to the prior year, and specifically higher balances of variable rate credit facility debt, as a result of high sustained working capital needs and an increase in share buybacks. We also incurred higher average interest rates during the year due to changes in interest levels in the marketplace.

Income Taxes

We recorded income tax expense of $353.1 in 2022, or 24.5% of earnings before income taxes, compared to $282.8 in 2021, or 23.4% of earnings before income taxes. The increase in our tax rate in 2022 is due primarily to reduced benefits associated with the exercise of stock options, an increase in state income tax expense, and an absence of certain favorable reserve adjustments that benefited 2021.

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Net Earnings

Net earnings, net earnings per share (EPS), the percentage change in net earnings, and the percentage change in EPS, were as follows:

During 2022, net earnings increased, primarily due to higher sales and our ability in the period to grow costs more slowly than we grew sales. This was only slightly offset by a higher income tax rate.

Liquidity and Capital Resources

Net Cash Provided by Operating Activities

Net cash provided by operating activities in dollars and as a percentage of net earnings were as follows:

% of net earnings 86.6 % 83.3 %

In 2022, we experienced a slight increase in our operating cash flow as a percentage of net earnings, though this reflects a significant increase in our conversion percentage in the second half of 2022 which more than offset a significant decline in our conversion percentage in the first half of 2022. Taken as a whole, while our working capital needs remained elevated through 2022, they declined slightly on a year-over-year basis whereas our earnings increased on a year-over-year basis.

Trade Working Capital Assets

The following table sets forth the dollar and percentage change in accounts receivable, net, inventories, and accounts payable for the period ended December 31:

Twelve-month Dollar Change Twelve-month Percentage Change

Note – Amounts may not foot due to rounding difference.

In 2022, the annual growth in net accounts receivable reflected several factors. First, our receivables are expanding due to improved business activity and resulting growth in our customers' sales. Second, we continue to experience a shift in our customer mix due to relatively stronger sales growth from national account customers, which tend to be larger and carry longer payment terms than our non-national account customers.

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In 2022, our inventories increased, reflecting significant inflation in the value of stocked parts, the addition of inventory to support the growth of our manufacturing and construction customers as they expand production to meet improved business activity, deeper inventory stocking due to disruption in supply chains, and our efforts to sustain higher internal fulfillment rates.

In 2022, the annual growth in accounts payable reflected product purchases increasing to support the improvement in business activity at our manufacturing and construction customers.

The approximate percentage mix of inventory stocked at our selling locations versus our distribution center and manufacturing locations was as follows at year end:

Selling locations 58 % 57 %

Distribution center and manufacturing locations 42 % 43 %

Net Cash Used in Investing Activities

Net cash used in investing activities in dollars and as a percentage of net earnings were as follows:

% of net earnings 15.0 % 16.1 %

The changes in net cash used in investing activities in 2022 was primarily related to higher net capital expenditures.

Set forth below is a recap of our 2022 and 2021 net capital expenditures in dollars and as a percentage of net sales and net earnings:

Data processing software and equipment 30.6 28.0

Real estate and improvements to branch locations 12.4 37.9

Purchases of property and equipment 173.8 156.6

Proceeds from sale of property and equipment (11.4) (8.4)

% of net sales 2.3 % 2.5 %

% of net earnings 14.9 % 16.0 %

Our net capital expenditures increased in 2022, when compared to 2021. The most significant area driving this increase was higher spending on FMI equipment. We had slightly higher property spending, which reflected significant investments in automation and upgrades at our hubs mostly offset by lower spending on a new building in downtown Winona, which was completed in 2021. We had only modest increases related to our vehicle fleet, manufacturing operations, and information technology. Net capital expenditures in 2022 were below our anticipated range of $170.0 to $190.0 due to certain equipment and project delays related to hub projects.

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Net Cash Used in Financing Activities

The fluctuations in net cash used in financing activities were due to changes in the level of our dividend payments and in the level of common stock purchases. These amounts were partially offset by the exercise of stock options and net payments (proceeds) from debt obligations. Net cash used in financing activities in dollars and as a percentage of earnings were as follows:

% of net earnings 65.4 % 69.6 %

Purchases of common stock 237.8 —

% of net earnings 21.9 % — %

Total returned to shareholders $ 949.1 643.7

% of net earnings 87.3 % 69.6 %

Proceeds from the exercise of stock options $ (9.2) (31.6)

% of net earnings -0.8 % -3.4 %

Debt obligations (proceeds) payments, net $ (165.0) 15.0

% of net earnings -15.2 % 1.6 %

% of net earnings 71.3 % 67.8 %

Stock Purchases

In 2022, we purchased 5,000,000 shares of our common stock at an average price of approximately $47.58 per share. In 2021, we did not purchase any shares of our common stock.

We had authority to purchase up to 6,200,000 additional shares of our common stock under the July 12, 2022 authorization. This authorization did not have an expiration date.

Dividends

We declared a quarterly dividend of $0.35 per share on January 18, 2023. In 2022, we paid aggregate annual dividends per share of $1.24. In 2021, we paid aggregate annual dividends per share of $1.12.

Debt

Our borrowings under the Credit Facility and Master Note Agreement peaked during each quarter of 2022 as follows:

First quarter $ 525.0

Effects of Inflation

In 2022, we began to observe easing in inflationary pressures for metals (especially steel), energy, and transportation services (especially overseas containers and shipping). However, this did not translate into a reduction in inflationary pressures on our financial results for two reasons. First, inflationary pressures accelerated through 2021, and many periods in 2022 were comparing to lower cost levels in the preceding year. Second, we have a long supply chain for many products, and it can take several quarters from when inflationary pressures begin to recede for the effect to impact our earnings results. In 2022, we increased prices, sought alternative sources for products and services, and consolidated spend for products and services as a means of mitigating inflation. However, higher product and transportation costs did have a slightly negative effect on our gross margin percentage for the full year.

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Critical Accounting Estimates

In preparing our consolidated financial statements in conformity with U.S. GAAP, we must make decisions that impact the reported amounts of assets, liabilities, revenues and expenses, and the related disclosures. Such decisions include the selection of the appropriate accounting principles to be applied and the assumptions on which to base accounting estimates. In reaching such decisions, we apply judgments based on our understanding and analysis of relevant circumstances, historical experience, and actuarial valuations. Actual amounts could differ from those estimated at the time the consolidated financial statements are prepared.

Our most significant accounting policies, including Revenue Recognition and Inventories, are described in Note 1 of the Notes to Consolidated Financial Statements. Some of those significant accounting policies require us to make difficult, subjective, or complex judgments, or estimates. An accounting estimate is considered to be critical if it meets both of the following criteria: (i) the estimate requires assumptions about matters that are highly uncertain at the time the accounting estimate is made, and (ii) different estimates reasonably could have been used, or changes in the estimate that are reasonably likely to occur from period to period may have a material impact on the presentation of our financial condition, changes in financial condition, or results of operations. Our most critical accounting estimates include the following:

Allowance for Credit Losses – This reserve is for accounts receivable balances that are potentially uncollectible. The allowance for credit losses is based on an income statement approach which adjusts the ending balance sheet to take into consideration expected losses over the contractual lives of the receivables, considering factors such as historical data as a basis for future expected losses. If business or economic conditions change, our estimates and assumptions may be adjusted as deemed appropriate. Historically, actual required reserves have not varied materially from estimated amounts.

Inventory valuation – Adjustments to the valuation of inventory are based on an analysis of inventory trends including reviews of inventory levels, sales information, and the on-hand quantities relative to the sales history for the product. Our methodology for estimating whether adjustments are necessary is continually evaluated for factors including significant changes in product demand, market conditions, condition of the inventory, or liquidation value. If business or economic conditions change, our estimates and assumptions may be adjusted as deemed appropriate. Historically, actual required adjustments have not varied materially from estimated amounts.

General insurance reserves – These reserves are for general claims related to workers' compensation, property and casualty losses, and other general liability self-insured losses. The reserves are based on an analysis of reported claims and claims incurred but not yet reported related to our historical claim trends. We perform ongoing reviews of our insured and uninsured risks and use this information to establish appropriate reserve levels. We analyze historical trends, claims experience, and loss development patterns to ensure the appropriate loss development factors are applied to the incurred costs associated with the claims made. Historically, actual required reserves have not varied materially from estimated amounts.

Recently Issued and Adopted Accounting Pronouncements

A description of recently issued and adopted accounting pronouncements, if any, is contained in Note 1 of the Notes to Consolidated Financial Statements.

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ITEM 7A.QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

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.

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ITEM 8.FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

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.

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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 locations to test the Company's inventory quantities by evaluating:

•Homogeneity of the locations;

•Historical inventory locations we have visited and results of prior physical counts;

•Inventory dollars by location; and

•The Company's inventory cycle count results, including the results of monitoring and compliance with cycle count program by in-market location.

We tested the existence and completeness of inventory by counting inventory quantities on a sample basis through in-market location visits during the year to evaluate the Company's perpetual inventory records. In addition, we evaluated the overall sufficiency of audit evidence obtained over the quantities of inventory at in-market locations.

/s/ KPMG LLP

We have served as the Company's auditor since 1987.

Minneapolis, Minnesota

February 6, 2024

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FASTENAL COMPANY AND SUBSIDIARIES

Consolidated Balance Sheets

(Amounts in millions except share information)

December 31

Assets

Current assets:

Prepaid income taxes 17.5 8.1

Operating lease right-of-use assets 270.2 243.0

Liabilities and Stockholders' Equity

Current liabilities:

Current portion of debt $ 60.0 201.8

Current portion of operating lease liabilities 96.2 91.9

Deferred income taxes 73.0 83.7

Other long-term liabilities 1.0 3.5

Commitments and contingencies (Notes 5, 8, 9, and 10)

Stockholders' equity:

Additional paid-in capital 41.0 3.6

Accumulated other comprehensive loss (54.8) (64.8)

Total liabilities and stockholders' equity $ 4,462.9 4,548.6

See accompanying Notes to Consolidated Financial Statements.

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FASTENAL COMPANY AND SUBSIDIARIES

Consolidated Statements of Earnings

(Amounts in millions except earnings per share)

For the year ended December 31

Diluted net earnings per share $ 2.02 1.89 1.60

Diluted weighted average shares outstanding 573.0 575.6 577.1

See accompanying Notes to Consolidated Financial Statements.

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FASTENAL COMPANY AND SUBSIDIARIES

Consolidated Statements of Comprehensive Income

(Amounts in millions)

For the year ended December 31

Other comprehensive income (loss), net of tax:

See accompanying Notes to Consolidated Financial Statements.

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FASTENAL COMPANY AND SUBSIDIARIES

Consolidated Statements of Stockholders' Equity

(Amounts in millions except per share information)

Common stock

Balance at beginning of year $ 5.7 5.8 5.7

Stock options exercised 0.0 (0.1) 0.1

Balance at end of year 5.7 5.7 5.8

Additional paid-in capital

Balance at beginning of year 3.6 96.2 59.1

Purchases of common stock — (109.1) —

Stock-based compensation 7.3 7.2 5.6

Retained earnings

Translation adjustment upon merger of foreign subsidiary — 0.9 —

Purchases of common stock — (128.7) —

Accumulated other comprehensive income (loss)

Balance at beginning of year (64.8) (30.7) (21.2)

Other comprehensive income (loss) 10.0 (34.1) (9.5)

Cash dividends paid per share of common stock $ 1.78 1.24 1.12

See accompanying Notes to Consolidated Financial Statements.

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FASTENAL COMPANY AND SUBSIDIARIES

Consolidated Statements of Cash Flows

(Amounts in millions)

For the year ended December 31

Cash flows from operating activities:

(Gain) loss on sale of property and equipment (4.3) 1.1 (1.1)

Bad debt expense (recoveries) 2.2 (1.8) 2.5

Deferred income taxes (10.7) (4.9) (13.7)

Stock-based compensation 7.3 7.2 5.6

Amortization of intangible assets 10.7 10.7 10.8

Changes in operating assets and liabilities:

Cash flows from investing activities:

Proceeds from sale of property and equipment 12.2 11.4 8.4

Net cash used in investing activities (161.2) (163.0) (148.5)

Cash flows from financing activities: