Fastenal (FAST) 10-K2023 FY Annual report

Certain statements contained in this Annual Report on Form 10-K, or in other reports of the company and other written and oral statements made from time to time by the company, do not relate strictly to historical or current facts. As such, they are considered 'forward-looking statements' that provide current expectations or forecasts of future events. These forward-looking statements are made pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995. Such statements can be identified by the use of terminology such as anticipate, believe, should, estimate, expect, intend, may, will, plan, goal, project, hope, trend, target, opportunity, and similar words or expressions, or by references to typical outcomes. Any statement that is not a purely historical fact, including estimates, projections, trends, and the outcome of events that have not yet occurred, is a forward-looking statement. Our forward-looking statements generally relate to our expectations regarding the business environment in which we operate, our projections of future performance and opportunities for growth based on potential market opportunities, our perceived marketplace opportunities, our strategies, goals, mission and vision, and our expectations about matters including capital expenditures, tax rates, inventory levels, liquidity, liabilities from tax positions, the performance of our fastener business in comparison to our non-fastener business, openings and closing of in-market locations and signings of Onsite locations and new machine equivalent units for Fastenal Managed Inventory (FMI) (including bin stock and industrial vending) and the competitive advantages they offer, our digital solutions and other product offerings (including new product lines), national accounts as a percentage of overall sales, the advantages of our integrated physical and virtual model, growth in safety products as a percentage of product sales, the amount of FMI revenue that we may be able to service through local inventory fulfillment terminals, and the ability of our competitors to replicate our distribution capabilities. You should understand that forward-looking statements involve a variety of risks and uncertainties, known and unknown, and may be affected by inaccurate assumptions. Consequently, no forward-looking statement can be guaranteed and actual results may vary materially. Factors that could cause our actual results to differ from those discussed in the forward-looking statements include, but are not limited to, economic downturns (including economic downturns as a result of global pandemics, including the COVID-19 pandemic), weakness in the manufacturing or commercial construction industries, competitive pressure on selling prices, changes in trade policies or tariffs, changes in our current mix of products, customers, or geographic locations, changes in our average branch size, changes in our purchasing patterns, changes in customer needs, changes in fuel or commodity prices, product and transportation inflation, inclement weather, changes in foreign currency exchange rates, difficulty in adapting our business model to different foreign business environments, failure to accurately predict the market potential of our business strategies, the introduction or expansion of new business strategies, increased competition (including with respect to our FMI or Onsite operations), difficulty in maintaining installation quality as our industrial vending business expands, the failure to meet our goals and expectations regarding expansion of our FMI or Onsite operations or any changes in branch locations, changes in the implementation objectives of our business strategies, difficulty in hiring, relocating, training, or retaining qualified personnel, difficulty in controlling operating expenses, difficulty in collecting receivables or accurately predicting future inventory needs, changes in sales trends, changes in supplier production lead times, changes in our cash position or our need to make capital expenditures, credit market volatility and increases in interest rates, changes in tax law or the impact of discrete items on future tax rates, changes in the availability or price of commercial real estate, changes in the nature, price, or availability of distribution, supply chain, or other technology (including software licensed from third parties) and services related to that technology, difficulty in obtaining continued business from new safety product customers and the acceptance by customers of any new product lines, cyber security incidents, potential liability and reputational damage that can arise if our products are defective, and other risks and uncertainties detailed in this Form 10-K under the heading 'Item 1A. Risk Factors'. Each forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to update any such statement to reflect events or circumstances arising after such date.

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

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

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

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

1) A 'traditional branch' typically services a wide variety of customers, ranging from the local operations of large, national account customers to smaller local businesses. Based on the unique characteristics of certain markets, some traditional branches will be structured and stocked to service retail customers. Locations are selected primarily based on their proximity to our distribution network and employment and production data for manufacturing and non-residential construction companies. We stock all branches with inventory drawn from all of our product lines and tailored by our district and branch personnel to the needs of the local customer base. Since Fastenal's founding and through 2013, traditional branch openings were a primary growth driver for the company, and we experienced net openings each year over that time span. However, new growth drivers, business models, and business tools have emerged and diminished the direct role of traditional branch openings in our growth. Traditional branches were entirely U.S.-based until 1994, when we opened our first location in Canada. At the end of 2023, we had 1,441 traditional branches in the United States and Canada, and they represented 51.0% of net sales.

Traditional branches are also differentiated by their operating styles. Certain locations are Customer Service Branches (CSBs), which tend to feature a showroom and our standard stocking model of products designed for contractors. CSBs often conduct some business with non-account or retail-like customers. However, this customer set typically represents less than 10% of sales at this type of location. Other locations operate as Customer Fulfillment Centers (CFCs), which tend to feature a limited showroom and stock customer-specific inventory. These tend to appear and function more like an industrial supply house and stocking location and often have fewer transactions with non-account or retail-like customers than in a CSB branch. The choice of operating style is made by local leadership and is based on local market considerations. At the end of 2023, 15% of our traditional branches operated as a CSB and 85% operated as a CFC.

2) An 'international branch' is the format we typically deploy outside the United States and Canada. We first expanded outside of the United States and Canada when we opened a branch in Mexico in 2001. Since then, we have continued to expand our global footprint, and at the end of 2023, we operated in 23 countries outside of the United States and Canada. Mexico is the largest of these, and we also operate in Europe, Asia, and Central and South America. Our go-to-market strategy in countries outside of the United States and Canada focuses primarily on servicing large, national account customers disproportionately concentrated in manufacturing and heavily oriented toward planned fastener and non-fastener product spend. We are not as well recognized in many of our non-North American locations as we are in the U.S. and Canada. However, our ability to provide a consistent service model, including vending, bin stocks, and Onsites, on a global basis is attractive to our customer base, much of which are the foreign operations of North American-based companies. At the end of 2023, we had 156 international branches operating outside the U.S. and Canada, and they represented 4.5% of net sales.

Traditional and international branches sell to multiple customers. In each year since 2013, we have experienced a net decline in our total branch count, primarily due to consolidations in our U.S. market, including net declines of 86 branches in 2023. Our total decline since 2013 is 1,090 branches. We will continue to open traditional and international branches in accordance with our overall strategy. We believe the strategic rationalization that has produced a significant decline in our traditional branch network in the United States and Canada since 2013 is largely completed, and expect reduced closing activity beginning in 2024.

The following table provides a summary of the branches and Onsite locations we operated at the end of each year, as well as the openings, closings, and conversions during each year:

We believe the profitability of our in-market locations is affected by the average revenue produced by each site. In any in-market location, certain costs related to growth are at least partly variable, such as employee-related expenses, while others, like rent and utility costs, tend to be fixed. As a result, it has been shown that as an in-market location increases its sales base over time, it typically will achieve a higher operating profit margin. This ability to increase our operating profit margin is influenced by: (1) general growth based on end market expansion and/or market share gains, (2) the age of the in-market location (new locations tend to be less profitable due to start-up costs and, in the case of a traditional branch, the time necessary to generate a customer base), and/or (3) rationalization actions, as in the past several years we have seen a net decline in our traditional

branch base. There are many reasons why local or regional management might decide to close a location. Key customers may have migrated to a different part of the market, factories may have closed, our own supply chain capabilities in a market may have evolved to allow us to service some areas with fewer traditional branches, and/or our customers may have transitioned to our Onsite model. An Onsite location may also close because local or regional management determines that the business at the location is unlikely to scale sufficiently to justify our being on premise, in which case the relationship often reverts to being managed in a local traditional branch. The paths to higher operating profit margins are slightly different in a traditional branch versus an Onsite location, as the former will tend to have more fixed costs to leverage, while the latter will tend to have a smaller fixed cost burden but have greater leverage of its employee-related expenses. In the short term, the Onsite program can hurt the profitability of our existing branch network as it can pull established revenue away from an existing branch even as its fixed expenses are largely unchanged.

Over time, we have invested in and developed various technologies that allow us to put physical product closer to the point of use in a customer location, increase the visibility of a customer's supply chain (to the customer as well as our personnel), and/or improve the ability to monitor or control usage. While there are isolated exceptions, these technologies are not themselves channels to the market but rather are utilized by our branch and Onsite channels to enhance service to our customers. Collectively, these tools comprise our Fastenal Managed Inventory (FMI) Technology suite. We believe our fully integrated distribution network allows us to manage the supply chain for all sizes of customers. FMI programs tend to generate a higher frequency of business transactions and, coupled with our fully integrated distribution network, foster a strong relationship with customers.

Our industrial vending portfolio consists of 20 different vending devices, with 16 of these being in either a helix or locker format. Our most utilized models include the helix-based FAST 5000 and our 12- and 18-door lockers; combined, these comprise approximately 66% of our installed base of devices. These are either configurable or are available in multiple configurations to accommodate the various sizes and forms of products that will be dispensed to match the unique needs of our customers. Target monthly revenues per device typically range from under $1,000 to in excess of $3,000, with our flagship FAST 5000 device having a targeted monthly throughput of $2,000.

We also invest in digital solutions that aim to deliver strategic value for our customers, leverage local inventory for same-day solutions, and provide efficient service. While there is a transactional element to our digital services, many of the solutions we invest in are intended to add value to customers by illuminating various elements of their supply chain. These solutions take many forms:

1) Transactional. Our transactional, or eCommerce, platforms (web verticals or integrated catalogs) provide a means for our customers to effectively and efficiently procure MRO and unplanned spend. While there is a retail component to our transactional digital services, most of the revenue attributable to this is with our traditional customer base, nearly all of which purchase digitally as a supplement to other channels and tools that it utilizes with Fastenal. We attribute the revenue generated from a customer location through our transactional platforms to the in-market location that traditionally services that customer location.

2) Digital Visibility. Certain of our digital capabilities are intended to produce operational efficiencies for our customers and ourselves and/or to deliver strategic value by illuminating customer supply chain operations. For instance, we have developed, and continue to develop, 'Mobility' applications, one example of which is our Vending App, which provides a number of benefits. It provides easy, real-time information pertaining to a customer's local inventory position within their point-of-use devices. It incorporates customer usage data to recommend optimized parts and quantity for specific devices, which improves customer inventories while reducing the risk of stock-outs. Moving our fulfillment process from a vending device-based keypad function to a tablet or scanning interaction improves the restock process (reduced risk of product outages), reducing time consumed (greater efficiency) while improving accuracy (improved quality assurance). We will continue to build out our suite of Mobility applications. Electronic Data Interchange (EDI), is the connectivity between our system and our customers' procurement systems – whether a direct integration into their Enterprise Resource Planning (ERP) system or through a third-party procurement network or marketplace. These solutions provide a system-to-system exchange of electronic procurement documents (such as purchase orders, advanced shipping notices, and invoices for direct and indirect spend). Our eProcurement Solutions provide a bridge between our FMI replenishment activity and our customers' procurement systems – creating an efficient, accurate and streamlined procure-to-pay (P2P) process. FAST360° acts as the bridge between our FMI footprint and a

customer's view into our managed service model. FAST360° surfaces data around these managed services as one central source of information as we manage our customers' OEM and MRO product lines. This is achieved through our FMI technologies providing locational data around our FASTStock, FASTBin, and FASTVend footprint, and FAST360° being the means of surfacing that data and activities to our customers.

3) Analytics. We provide solutions-based digital platforms (e.g., web verticals or integrated catalogs) which leverage our existing strategic environment by creating a means of migrating online spend offline, which illuminates our supply chain capabilities. This is marketed under the FAST360° Analytics label, as it is an enterprise-centric extension of the digital visibility capabilities of FAST360°. We bring value to our customers, as well as ourselves, by using these digital platforms and analytics to shift product from a 'non-sticky' transactional environment (which is online) to a 'sticky' strategic environment (which is our FMI programs). We create customer cost savings opportunities through this directive by lowering the total cost of ownership (TCO) as the objective is to shrink the unplanned (and traditionally high cost), purely transactional spend bucket.

We believe our integrated physical and virtual model, when paired with our national (and increasingly international) scope, represents a unique capability in industrial distribution when compared to eCommerce as an independent sales channel. We expect to continue to build out and develop our digital solutions over time. Our greatest opportunity lies with the deployment of efficient and effective supply chain programs. We are focused on addressing the four key components of people, products, processes, and technology to support this model.

We believe our global channels to market and business tools, including those that we consider to be growth drivers (Onsites, international expansion, FMI, and digital solutions), represent alternative means to address the requirements of certain customer groups. These means get us closer to the customer and to where the product is actually consumed. This is consistent with our strategy and offers significant value by providing differentiated and 'sticky' service. Combined with ongoing strategic investments in end market initiatives as well as selling (in-market and otherwise) and non-selling (engineering, product specialists, manufacturing, etc.) employees, we offer a range of capabilities that are difficult for large and small competitors to replicate.

We operate 15 regional distribution centers in North America: 12 in the United States, two in Canada, and one in Mexico. We also operate two distribution centers in Europe. These distribution centers give us approximately 5.0 million square feet of distribution capacity. Additional details on these locations can be found within the 'Item 2. Properties' section of this Form 10-K. These distribution centers are located so as to permit deliveries of two to five times per week to our in-market locations using our trucks and overnight delivery by surface common carrier, with approximately 74% of our North American in-market locations receiving service four to five times per week. The distribution centers in Indiana and Kansas also serve as 'master' hubs, with those in California and North Carolina serving as 'secondary' hubs to support the needs of the in-market locations in their geographic regions as well as to provide a broader selection of products for the in-market locations serviced by the other distribution centers.

We currently operate 11 of our North American distribution centers with automated storage and retrieval systems (ASRS). These distribution centers operate with greater speed and efficiency, and currently handle approximately 94% of our picking activity. We expect to invest in additional automation technologies, expand existing distribution facilities, and/or add new distribution centers over time as our scale and the number of our in-market locations increases.

We also utilize a network of Local Inventory Fulfillment Terminals (LIFTs) which reside within our existing distribution centers and are intended to support areas that have a dense population of FMI devices. Traditionally, branch personnel were solely responsible for stocking and packaging inventory, delivering to a customer's location, and refilling the customer's devices. As our sales through FMI devices have grown, this approach has resulted in redundant inventory in a territory and a greater proportion of our sales personnel's time being spent on non-sales activities. We primarily utilize a 'drop-and-deliver' model wherein a LIFT is responsible for stocking and packaging FMI supplies, producing inventory and accuracy benefits, and delivering them to the business unit, where delivery and replenishment is then performed by local district or branch personnel. In a minority of cases we deploy a 'drop-and-scatter' model, wherein delivery and replenishment is also performed by LIFT personnel. In 2023, approximately 8% of our FMI revenue was serviced through a LIFT, but over time we believe this figure can approximate 40% of our FMI revenue.

Fastenal was founded as a distributor of fasteners and related industrial and construction supplies. This includes threaded fasteners, bolts, nuts, screws, studs, and related washers, as well as miscellaneous supplies and hardware, such as pins, machinery keys, concrete anchors, metal framing systems, wire rope, strut, rivets, and related accessories. Our fastener product line, which is primarily sold under the Fastenal product name, represented 32.4% of our consolidated sales in 2023.

Fastener distribution is complex. In most cases, the product has low per unit value but high per unit weight. This presents challenges in moving product from suppliers, most of whom are outside of North America, to our distribution centers, as well as from our distribution centers to our branch, Onsite, and customer locations. At the same time, fasteners are ubiquitous in manufactured products, construction projects, and maintenance and repair while also exhibiting great geometric variability based on use and application. In many cases, a fastener is a critical part in machine uptime and/or effective use. These features have greatly influenced our logistical development, training and educational programs, support capabilities, and inventory decisions, which we believe would be difficult for competitors to replicate.

In 1993, we began to aggressively add additional product lines, and these represented 67.6% of our consolidated sales in 2023. These products, which we refer to as non-fastener product lines, tend to move through the same distribution channel, get used by the same customers, and utilize the same logistical capabilities as the original fastener product line. This logic is as true today as it was when we first began to diversify our product offering. However, over time, the supply chain for these product lines has evolved in ways independent of the fastener line. For instance, non-fastener product lines benefit disproportionately from our development of industrial vending.

The most significant category of non-fastener products is our safety supplies product line, which accounted for 21.2% of our consolidated sales in 2023. This product line has enjoyed dramatic sales growth in the last 10 years, which we believe is directly attributable to our success cross-selling safety supplies to customers that utilize us for non-safety products as well as our ability to market, deploy, and service industrial vending over that period. We expect these variables to remain the primary drivers of performance for our safety supplies product line.

We plan to continue to add other product lines in the future.

Our inventory stocking levels are determined using our computer systems, by our sales personnel at in-market locations, by our district and regional leadership, and by our product development team. The data used for this determination is derived from sales activity from all of our selling locations, from individual selling locations, and from different geographic areas. It is also derived from supplier information and from customer demographic information. Our computer system monitors the inventory level for all stock items and triggers replenishment, or prompts a buyer to purchase, as necessary, based on an established minimum-maximum stocking level. In the past we have utilized a base inventory model for all of our branches, and such a model still exists in a smaller subset of our locations. Increasingly, however, branches primarily stock inventory that is deemed to be appropriate by the district and branch personnel to service the customers within their selling territory. Similarly, non-branch selling locations (primarily Onsites) stock inventory exclusively based on customer-specific arrangements. Inventories in distribution centers are established from computerized data for the selling locations served by the respective distribution center. Inventory quantities are continuously re-balanced utilizing an automated transfer mechanism we call 'inventory re-distribution'.

Inventory held at our selling locations, close to customers and available on a same-day basis, accounted for approximately 64% of our total inventory at the end of 2023. Inventory held at our distribution centers and manufacturing locations accounted for approximately 36% of our total inventory at the end of 2023. The distribution center and manufacturing location inventory, when combined with our trucking network, allows for fast, next-day service at a very competitive cost.

We use a large number of suppliers for the standard stock items we distribute. Most items distributed by our network can be purchased from several sources, although preferred sourcing is used for some stock items to facilitate quality control. During 2023, we had a single supplier that accounted for more than 5% of our inventory purchases, whereas all remaining suppliers fell below that threshold.

In the case of fasteners and our private label non-fastener products, we have a large number of suppliers but these suppliers are heavily concentrated in a single geographic area, Asia. Within Asia, suppliers in China and Taiwan represent a significant source of product. Further, in many cases where we source directly from a North American supplier, the original country of origin of the acquired parts is the supplier's Asian facilities. As a result, the cost and effectiveness of our supply chain is dependent on relatively unfettered trade across geographic regions.

Beyond inventory, we have some concentration of purchasing activity. For example, we utilize a limited number of suppliers for our distribution equipment and our vehicle fleet, and primarily one supplier for our industrial vending equipment. However, we believe there are viable alternatives to each of these, if necessary.

We believe our success can be attributed to our ability to offer customers a full line of quality products, our convenient locations and diverse methods of providing those products, and the superior service orientation and expertise of our employees. Approximately 70% to 75% of our customers are in manufacturing end markets, which encompasses fabricated products, heavy machinery, petrochemical, mining and aerospace and includes both OEM and MRO customers. The remaining 25% to 30% of our customers fall primarily into non-residential construction (general and commercial contractors), reseller (retail and wholesale trades, dealers, and rental businesses), transportation (transportation services, such as air, train, maritime or truck transport, as well as fulfillment centers) and state and local government entities, including schools, school districts and universities.

Based on our customer profile being oriented toward manufacturing, our business has historically been cyclical. However, we believe our model has certain features that moderate the volatility of our results around cyclical changes. First, we have a large number of customers that serve a wide range of segments within the broader manufacturing market. While slumps in one industry served by us can rapidly spread to other, interrelated industries, locally or globally, we still believe this customer and market segment diversity provides some insulation from economic changes that are not across multiple industries and geographic regions. Second, while a meaningful part of our revenue is derived from products that are incorporated into final products, we also have a significant portion of revenue that is derived from products used to maintain facilities. This latter source of revenue tends to be impacted by cyclical changes, but its rate of change tends to be less dramatic.

Additionally, our local presence as part of a national, and increasingly international, footprint, our ability to provide a consistent level of high-touch service, and our ancillary capabilities around manufacturing, quality control, and product knowledge, are attractive to these multi-site customers. We believe our advantage with these customers has only been strengthened as we have added other channels, such as Onsite, FMI, digital solutions, and resources to serve these customers' unique demands. As a result, in 2023, national accounts represented 60.3% of our consolidated sales, compared to 57.8% and 56.6% in 2022 and 2021, respectively. We believe sales to national accounts customers will continue to increase as a percentage of our total sales over time.

their selling focus to 'key accounts', which is defined as any customer account with purchase activity of at least $2,000 per month. Key account customers have typically been able to utilize a wider range of our products and services, and as a result have exhibited greater potential to increase in size while being more efficient to pursue and support. In 2023, we averaged 39,266 key accounts per month and approximately 92.4% of the sales in our in-market locations were derived from our key accounts.

During 2023, no single customer represented 5% or more of our consolidated net sales.

Seasonality has some impact on our sales. The first and fourth quarters of each year are typically our lowest volume periods, given their overlap with winter months in North America during which our direct and indirect sales to customers in the non-residential construction market typically slow due to inclement weather. The fourth quarter also tends to be more greatly affected by the Thanksgiving (October in Canada and November in the United States), Christmas, and New Year holiday periods, due to plant shut downs. In contrast, the second and third quarters of each year typically have higher revenues due to stronger non-residential construction activity and relatively fewer holidays (although Good Friday will sometimes fall in the second quarter and the 4th of July will always fall in the third quarter).

Our business is highly competitive and includes large national distributors whose strongest presence tends to be in more densely populated areas, and smaller regional or local distributors, which compete in many of the smaller markets in which we have branches. We believe the principal competitive factors affecting the markets for our products, in no particular order, are customer service, price, convenience, product availability, and cost saving solutions.

Market strategies in industrial distribution are varied. With respect to products, many of the larger distributors have trended toward a broad-line offering over time; however, they are often still closely associated with a specific product that can influence their ability to capture market share. This association with a specific product line is often even more pronounced among smaller competitors, though many smaller competitors do deploy a broad-line model. Means of serving the customer are even more diverse. For instance, many competitors maintain a local, branch-based presence in their markets, while others use vans to sell products in markets away from their main warehouses, while still others rely on catalogs or telemarketing sales. Recent years have seen the emergence of eCommerce solutions, such as websites, and while this channel has been embraced by many traditional distributors, it also has introduced non-traditional web-based competitors into the marketplace. The diversity of product and service models supported in the marketplace is a reflection of the equally diverse product and service needs of the customer base. The large majority of our customers utilize multiple channels, from a single distributor or a range of distributors, to procure the products they need in their operations.

We believe that better service, and a competitive selling advantage, can be provided by maintaining a physical selling and stocking presence closer to the customers' location(s). As a result, we maintain in-market locations in small, medium, and large markets, each offering a wide variety of products. The convenience of a large number of in-market locations in a given area, combined with our ability to provide them with frequent deliveries to such branches from centrally located distribution centers, facilitates the prompt and efficient distribution of products. We also believe our FMI solutions, supported by an in-market location, provide a unique way to provide our customers convenient access to products and cost saving solutions using a business model not easily replicated by our competitors. Having trained personnel at each in-market location also enhances our ability to compete (see 'Employees' below).

Our Onsite service model provides us with a strategic advantage with our larger customers. Building on our core business strategy of the local branch, the Onsite model provides value to our customers through customized service while giving us a competitive advantage through stronger relationships with those customers, all with a relatively low incremental investment given the existing branch and distribution structure.

At the end of 2023, we employed 23,201 full- and part-time employees. Of these, approximately 71% held a selling role. We characterize these personnel as follows:

As of December 31, 2023, we had 23,201 employees worldwide, with 18,539 of those employees located in the United States (U.S.), 3,038 employees located in Canada and Mexico, and 1,624 employees located overseas in 24 other countries throughout the world.

Based on our EEO-1 data for 2023, in the U.S., females and minorities constitute 24.0% and 23.6% of our workforce, respectively. We believe these absolute figures gain further context when viewed against two additional data sets. First, over the past ten years there is a clear trend toward greater diversity in our business. Since 2013, our female and minority workforces have grown 2.2x and 3.8x faster, respectively, than our overall U.S. workforce. This trend reflects multiple dynamics in our business evolution, including the natural progression of our geographic expansion, the cycle of our promote-from-within philosophy, and efforts to improve hiring processes over time. Second, based on the U.S. Bureau of Labor Statistics data, we believe Fastenal's mix of female and minority employees is generally consistent with the proportion of females and minorities working in manufacturing and construction, which is representative of the pool of employees from which we might draw candidates. For instance, relative to the 24.0% of our U.S. workforce that is female, the proportion of females in the U.S. manufacturing and construction workforces are 29.5% and 10.8%, respectively. Similarly, relative to the 23.6% of our U.S. workforce that are minorities, the proportion of non-white (a definition utilized by the U.S. Census Bureau) individuals in the U.S. manufacturing and construction workforces are 21.6% and 12.5%, respectively.

Employee health and safety continues to be a priority in every aspect of our business. We have taken a multi-faceted approach to safety that helps us understand and reduce hazards in our business. Today, our health and safety programs span all operations including manufacturing, distribution centers, fleet and auto, and our branch and Onsite network. These key business units play a dynamic role in defining how we engage with our employees on health and safety. Trainings, audits, inspections, risk assessments, safety coaching, and employee engagement are all programs that help us consistently manage our facility safety and employee safety. In 2023, there were over 214,000 completed health and safety engagements, which is an increase of 7% compared to 2022. Our internal scorecard system and safety management system ensures we maintain focus on a variety of risks while we sustain an inclusive safety environment that contributes to innovation and improved performance. We continue to expand and evolve our safety programs to better meet our employee needs and workplace conditions as our business grows.

This commitment to, and continuous improvement toward, a safer work environment for our employees has generated excellent results. A widely accepted measure of organizational health and safety is the Experience Modification Rate (EMR). An organization's EMR is established through the comparison of a company's past and expected losses incurred through workplace injury against industry averages, which are compiled by the National Council on Compensation Insurance and consider unique variables such as the size and characteristics of an organization. Industry averages are benchmarked at a 1.00 EMR, with a reduction in the rate being reflective of an organization's ability to implement superior safety procedures and protocols, resulting in a safer environment and reducing both personnel and financial risk. In 2023, Fastenal had an EMR of 0.49, which is 51% better than the average performance rate for our industry.

In 2023, we achieved third-party re-certification for the ISO 45001 Occupational Health and Safety Management System. This certification illustrates the strength of our health and safety programs, as well as our commitment to continual improvement to better support our growing workforce. As our business model continues to grow through our branch and Onsite network, our customer critical programs have evolved to mitigate risk and incidents, while meeting customer specific needs. This partnership with our customers allows us to collaborate and expand our health and safety programs to enhance our customers' workplace safety performance.

Several principles underpin our employment philosophy. One principle is decentralization: placing employees close to our customers' operations and trusting these employees to independently make local decisions to provide differentiated local service. A second principle is that we are a passionately promote-from-within company, guided by a belief that if you work hard, make great decisions, learn from mistakes, and exemplify our cultural values, you should receive greater opportunity and responsibility. We believe these principles cultivate an entrepreneurial mindset and foster an environment of trust and empowerment.

As it relates to our compensation philosophy, we believe our combination and mix of base and bonus pay motivates our people to high levels of individual and company success, as the goals and objectives have been repeatedly demonstrated to be achievable with superior effort. We are guided by simple principles. First, compensation programs should be easy to understand, with goals and objectives that are clearly communicated and resources for success that are provided. They should be calculable by the employee and numbers-driven (e.g., not subjective). Second, total compensation should have a significant component that is based on how well the employee has grown their piece of the business and served our customers. Third, employees should receive incentives as soon as practical upon attainment of the goal.

Approximately 71% of our employees interface directly with customers on a daily or frequent basis, with the remainder supporting the selling efforts of our customer-facing employees. Typical pay arrangements provide a base amount paid periodically during the month, along with a major opportunity to earn bonus amounts, paid monthly, based on growth in sales, gross or pre-tax profit achieved, and prudent management of working capital. In certain roles, there may also be a portion of compensation based on contribution to attaining predetermined departmental or project and cost containment goals, most of which are focused on either customer service or better execution of company-wide activities.

Because we believe the growth in the company's stock value should be the reward for achieving long-term success consistent with being an owner, we have a stock option plan. In the case of certain foreign employees, we have a stock appreciation rights plan. All of our employees are eligible to receive stock option grants or stock appreciation rights.

We believe our combination of short- and long-term rewards and incentives has proven successful as reflected in our historic performance and levels of employee retention and turnover.

Our employees are not subject to any collective bargaining agreements, and we have experienced no work stoppages. We believe our employee relations are good.

Fastenal's values are integral to our employment process and serve as guideposts for leadership. The ultimate goal is straightforward: find great people, ask them to join, and give them a reason to stay. Reasons to stay include training, opportunity, and a welcoming environment. From a practical standpoint, this means that we attract a broad group of candidates and then hire the candidate who is the best match for the position based on their skills and abilities. In accordance with our decentralized leadership structure, we believe the person best suited to make this decision is the local leader trying to fill the opening. In light of our promote-from-within philosophy, we know we are hiring a potential future leader with every new hire.

Our Human Resources department develops efficient processes to expand our reach and pool of diverse talent while balancing the needs and requirements of data collection and storage. We have created a standardized framework for posting jobs and interviewing for positions, supplemented with training through the Fastenal School of Business (FSB). We have a Diversity and Compliance team that is heavily involved in developing this standardized framework, which ensures its integrity. Not only is this process followed for all new hires, we replicate the same procedures for any internal transfers and promotions.

The FSB (our internal corporate university program) develops and delivers a comprehensive array of industry and company-specific training and development programs that are offered to our employees. The programs are offered through a combination of classroom instructor-led training, virtual instructor-led training, and online learning. FSB provides core curricula focused on key competencies determined to be critical to the success of our employees' performance. In addition, we provide specialized educational tracks within various institutes of learning, as well as training plans based on roles within the company. These institutes of learning are advanced levels that provide specific concentrations of education and development and have been designed to focus on critical aspects of our business, such as leadership, effective best practices, sales and marketing, products, supply chain, and distribution.

Sourcing from suppliers with good standing is the foundation of an ethical supply chain. We expect our suppliers to comply with all relevant regulations and applicable standards. Our teams conduct risk analysis for suppliers who want to do business with us and require them to provide additional supporting documentation affirming their ethics, quality, and reliability. This ensures they meet our standards in these areas and are complying with Fastenal's Global Supplier Purchase Order Terms & Conditions and Supplier Code of Conduct. Utilizing third-party tools and global databases, Fastenal actively monitors government sanctions, denied party listings, withhold release orders, export restriction updates, financial status, adverse media, and multiple other official exclusion lists that provide information on any known risk of any entities and locations with which Fastenal engages, and screens all business partners against those lists. Additionally, we monitor key areas of trade-related risk, including dual-use goods, trade cases, anti-dumping and counter-vailing cases, and other protectionist trade measures for all countries that products are traded in. As part of our comprehensive Supply Chain Security program, we also evaluate our suppliers' approach to labor to ensure that they are using appropriate, and appropriately compensated, employees and ensure upstream supply chain visibility on globally sourced products.

With a local and global supplier base, continuous monitoring and local representation is a necessity to ensure protocols are triggered when risk may be evident, ensuring a safeguard against poor and/or impaired quality and regulatory violations that may otherwise impact our reputation or ability to effectively operate in the marketplace. This is performed not only at the time of supplier vetting and onboarding, but for the life of the relationship with the supplier. This process promotes a supply chain that is supportive of Fastenal's Global Supplier Purchase Order Terms & Conditions and Supplier Code of Conduct. In the event of non-compliance or potential risk, we work with the supplier to correct the situation. If remediation efforts are not undertaken to ensure the supplier remains in compliance with Fastenal's standards and code of conduct, alternative sources of supply may be considered to ensure the integrity of our supply chain. Supply chain compliance representatives are placed in international corporate offices to ensure global coverage and governance, ensuring that no matter where a customers' operations may take them, Fastenal has the infrastructure, resources, and internal processes established to perform its supply chain governance obligations.

Our Internet address for corporate and investor information is www.fastenal.com. The information contained on our website or connected to our website is not incorporated by reference into this annual report on Form 10-K and should not be considered part of this report.

Our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports filed or furnished pursuant to Section 13(a) or 15(d) of the Securities Exchange Act are available free of charge on or through our website at www.fastenal.com as soon as reasonably practicable after such reports have been filed with or furnished to the SEC.

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.

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.

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

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.

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

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.

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.

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:

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.

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

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

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

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.

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.

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.

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

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

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.

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.

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.

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.

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.

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.

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.

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

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.

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%.

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:

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.

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.

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):

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.

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:

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:

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:

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.

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.

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.

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 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:

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.

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.

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.

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.

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.

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.

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:

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 in dollars and as a percentage of net earnings were as follows:

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

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:

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.

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: