AAON, INC. 10-K

Item 1. Business. Overview AAON, Inc., a Nevada corporation, (“AAON Nevada”) was incorporated on August 18, 1987. Our operating subsidiaries include AAON, Inc., an Oklahoma corporation ("AAON Oklahoma"), AAON Coil Products, Inc., a Texas corporation ("AAON Coil Products"), and BasX, Inc. (dba BasX Solutions, formerly BasX, LLC), an Oregon corporation ("BasX"). Unless the context otherwise requires, references in this Annual Report to “AAON”, the “Company”, “we”, “us”, “our”, or “ours” refer to AAON Nevada and our subsidiaries. We are engaged in the engineering, manufacturing, marketing, and sale of premium air conditioning and heating equipment consisting of standard, semi-custom, and custom rooftop units, data center cooling solutions, cleanroom systems, chillers, packaged outdoor mechanical rooms, air handling units, makeup air units, energy recovery units, condensing units, geothermal/water-source heat pumps, coils, and controls. Business Segments The Company conducts its business through three business segments: AAON Oklahoma, AAON Coil Products, and BasX. AAON Oklahoma: AAON Oklahoma designs, manufactures, sells, and services standard, semi-custom, and custom heating, ventilation, and air conditioning ("HVAC") systems, designs and produces controls solutions for all of our HVAC units, and sells retail parts to customers through our two retail part stores in Tulsa, Oklahoma. Through our Norman Asbjornson Innovation Center ("NAIC") research and development laboratory facility in Tulsa, Oklahoma, the Company is able to test units under various environmental conditions. AAON Oklahoma includes the operations of our Tulsa, Oklahoma and Parkville, Missouri facilities, our NAIC research and development laboratory facility and two retail parts locations. AAON Coil Products: AAON Coil Products designs and manufactures a selection of our standard, semi-custom, and custom HVAC systems. In addition, AAON Coil Products designs and manufactures various heating and cooling coils to be used in HVAC systems, mostly for the benefit of AAON Oklahoma and AAON Coil Products. AAON Coil Products consists of operations at our Longview, Texas facilities. BasX: BasX provides product development design and manufacturing of custom engineered air handling systems including high efficiency data center cooling solutions, cleanroom HVAC systems, commercial/industrial HVAC systems, and modular solutions. Additionally, BasX designs and manufactures cleanroom environmental control systems to support hospital surgical suites, pharmaceutical process facilities, semiconductor and electronics manufacturing, laboratory and isolation and modular cleanrooms for facility flexibility. BasX consists of operations at our Redmond, Oregon facility. 1 For more information on our business segments' financial position and results of operations, refer to Note 23, "Segments," of the notes to consolidated financial statements. Business and Marketing Strategy Our products serve the commercial, industrial, data center cooling solutions, and cleanroom new construction and replacement markets within the HVAC equipment industry. Our business strategy involves mass customization that uses flexible computer-aided manufacturing systems to produce standard, semi-custom, and custom equipment and combines the low unit costs of mass production processes with the flexibility of individual customization. Through a collaborative effort with our independent representative sales offices, we design and manufacture the precise semi-custom product offering that best serves the customer's needs. Our marketing strategy focuses on customers and markets that demand HVAC equipment with higher performance, greater energy efficiency, and best indoor air quality. We manufacture equipment with more capabilities than the standard offerings found in the HVAC equipment industry. We further focus on developing a company culture focused upon customer satisfaction, reducing product delivery channel time and cost, and continuing with the goal of product and manufacturing technology leadership and innovation. Our product mix, with a heavy investment in research and development, has an emphasis on energy efficiency, environment, and indoor air quality. Products - AAON Oklahoma and AAON Coil Products Our rooftop and condensing unit markets primarily consist of units installed on commercial or industrial structures of generally less than ten stories in height. Our air handling units, self-contained units, geothermal/water-source heat pumps, chillers, and coils are suitable for all sizes of commercial and industrial buildings. The size of these markets is determined primarily by the number of commercial and industrial building completions and replacement demand from existing buildings. The replacement market consists of products installed to replace existing units/components that are worn or damaged and products to upgrade certain components, such as low leakage dampers, high efficiency heat exchangers and modern controls components. Currently, close to two-thirds of the industry’s market consists of replacement units. The commercial and industrial new construction market is subject to cyclical fluctuations in that it is generally tied to housing starts and the general economy, but has a lag factor of six to 18 months. Housing starts, in turn, are affected by such factors as interest rates, the state of the economy, population growth and the relative age of the population. When new construction is down, we emphasize the replacement market. Based on our 2021 combined sales of $530.4 million at AAON Oklahoma and AAON Coil Products, we estimate that we have approximately a 10% share of the greater than five ton rooftop market and a 2% share of the less than five ton market. During 2021, approximately 60% of our sales were generated from the renovation and replacement markets and 40% from new construction. The ratio of sales for new construction vs. replacement to particular customers is related to various factors. Generally, the cyclicality of the new construction market impacts this ratio the most over an economic cycle. To date, our sales have been primarily to the domestic market. Foreign sales accounted for approximately $14.8 million, $11.7 million, and $14.8 million of our net sales in 2021, 2020, and 2019, respectively. As a percentage of net sales, foreign sales accounted for approximately 3%, 2%, and 3% of our net sales in each of those years, respectively. We purchase certain components, fabricate sheet metal and tubing and then assemble and test the finished products. Our primary finished products consist of a single unit system containing heating and cooling in a self-contained cabinet, referred to in the industry as “unitary products”. Our other finished products are chillers, coils, air handling units, condensing units, makeup air units, energy recovery units, rooftop units, geothermal/water-source heat pumps, and controls. We offer three groups of rooftop units: the RQ Series, consisting of five cooling sizes ranging from two to six tons; the RN Series, offered in 28 cooling sizes ranging from six to 140 tons; and the RZ Series, which is offered in 15 cooling sizes ranging from 45 to 261 tons. 2 We also offer the SA, SB and M2 Series as indoor packaged, water-cooled or geothermal/water-source heat pump self-contained units with cooling capacities of three to 70 tons. Our small packaged geothermal/water-source heat pump units consist of the WH Series horizontal configuration and WV Series vertical configuration, from one-half to 12 1/2 tons, with options specifically for the replacement market and the new construction market. The replacement systems are designed to be installation friendly for most competitor water source heat pump models. We manufacture an LF Series air-cooled chiller covering a range of four to 55 tons. We offer two groups of condensing units: the CB Series, two to five tons and the CF Series, two to 70 tons. Our air handling units consist of the indoor F1, H3, and V3 Series and the modular M2 Series, as well as air handling unit configurations of the RQ, RN, RZ, and SA Series units. AAON is committed to designing and manufacturing innovative HVAC products of the highest quality, efficiency, and performance. As such, we are committed to meeting certification standards of the relevant standard setting bodies, including the Air-Conditioning, Heating, and Refrigeration Institute (“AHRI”); the American National Standards Institute ("ANSI"); American Society of Heating, Refrigeration and Air-Conditioning Engineers ("ASHRAE"); and the International Organization for Standardization ("ISO"). Our energy recovery option applicable to our RQ, RN, RZ, and SB units, as well as our H3, V3, and M2 Series air handling units, responds to the U.S. Clean Air Act mandate to increase fresh air in commercial structures. Our products are designed to compete on the higher quality end of standardized products. Our air-cooled chillers (LF Series) are certified with the AHRI in accordance with AHRI Standard 550/590. Our RN, RQ, M2, and SB Series, including our water-source heat pump products (WH, and WV Series), are AHRI certified in accordance with ANSI/AHRI/ASHRAE/ISO 13256. Our unitary products (RQ, RN, and CB Series) are certified with AHRI and the US Department of Energy to ANSI/AHRI 210/240 up to 5 tons capacity and ANSI/AHRI 340/360 up to 63 tons capacity. Performance characteristics of our products range in cooling capacity from one-half to 261 tons and in heating capacity from 7,200 to 4,500,000 British Thermal Units ("BTUs"). Many of our units far exceed these minimum standards and are among the highest efficiency units currently available. A typical commercial building installation requires one ton of air conditioning for every 300-400 square feet or, for a 100,000 square foot building, 250 tons of air conditioning, which can involve multiple units. Our water-source heat pump products recover otherwise wasted energy and employ it to cool, heat, and provide dehumidification to a building, making it one of the most efficient and environmentally friendly systems. AAON packaged rooftop units with two stage compressors are optimized with high efficiency evaporator and condenser coils and variable speed fans, leading to an AHRI Certified performance up to 20.3 SEER and 22.5 IEER. AAON H3/V3 Series energy recovery wheel air handling units provide energy efficient 100% outside air ventilation by recovering energy that would otherwise be exhausted from a building. AAON designs and produces controls solutions for all of our HVAC units including rooftop units, air handlers, chillers, and water-source heat pumps. We provide factory-developed and tested controls options for variable air volume systems associated with those units and other HVAC related equipment. We offer several controls options: the Orion Controller, Pioneer Gold, Pioneer Silver, terminal block for field installed controls, and factory installed customer provided controls. Most of our controls are Underwriters Laboratories category ZPVI2 compliant and BACnet Testing Laboratories certified which ensures our products meet internationally recognized standards for safety, traceability, conformance, and production quality. Our economizer function is California Title 24 certified to minimize energy consumption. AAON’s proven sequences of operation optimize the performance of our HVAC units. 3 Out of the box, our controls are user-friendly and configurable to provide a variety of HVAC unit application options, but we are also able to customize our controls to meet customers’ unique requirements. We have controls solutions that enhance AAON’s unique features and capabilities. Products - BasX The acquisition of BasX brings the Company exposure to attractive end-markets into which the Company has historically had minimal exposure. The products BasX manufactures are highly engineered and customized products, fully complementing our existing business. BasX data center cooling solutions are focused on providing highly configurable, purpose-built equipment with a focus on efficiency, speed of deployment, and quality. High-performance air-cooled chiller solutions are provided with indirect airside economization and optional adiabatic assisted cooling, and are designed to integrate with high performance computing systems requiring direct to chip cooling. White space process cooling solutions include fan coil walls, computer room air handling ("CRAH") units, overhead fan coils, in-row coolers, and chilled water air handlers. Packaged solutions include coupled economizing chillers with integrated air handling units, direct evaporative coolers, and packaged direct expansion ("DX") solutions with airside economizers. BasX cleanroom products are built to provide environmental control serving critical processes and high-fidelity control for precise industry requirements. Process cooling solutions include recirculation air handling units and make up air handling units including integration of piping systems and controls. Environmental control solutions include modular cleanroom environments, fan filter units, filtered ceiling grids with integral flush mount lighting, pressurized plenums with integral ceiling grids, and hospital surgical suites. BasX custom air handling products are primarily used in commercial, industrial, healthcare, and institutional facilities employing chilled water cooling, packaged direct expansion, heating hot water, indirect gas direct heat, humidification, dehumidification, filtration, and integrated controls. BasX manufactures plenum fans for integration into air handling units as well as for replacement applications. BasX offers integrated sound performance solutions. Air Quality Products The Coronavirus Disease 2019 ("COVID-19") pandemic has fueled a great deal of concern over best practices in the design and operation of building HVAC systems. In order to mitigate the spread of COVID-19, influenza, and other similar type respiratory diseases, we have done a great deal of research on what affects the transmission of these diseases and how AAON HVAC systems can be best designed. The American Society of Heating, Refrigeration and Air-Conditioning Engineers ("ASHRAE"), a professional association with a goal of advancing HVAC systems designs and construction, established an Epidemic Task Force in 2020 and determined several recommendations to mitigate the spread of the virus, including humidity control, air filtration, increased outdoor air ventilation, and air disinfection. Humidity control - AAON continues to lead the market in developing energy efficient humidity control with the use of variable capacity compressors and modulating hot gas reheat. Designing HVAC systems with superior humidity control allows building management to maintain ASHRAE’s recommended ambient relative humidity levels of 40%-60%, the ideal level to inactivate viruses in the air and on surfaces. Air Filtration - AAON standardizes a design that uses a backward curved fan wheel, which can accommodate higher airflow required for the ASHRAE recommended MERV 13 filtration, the minimum filter level for virus mitigation, with very little reconfiguration. Prior to 2020, a vast majority of commercial buildings used filtration levels of MERV 4 to MERV 8, which has always been acceptable for filtering out typical particulates in the air stream. Outdoor Air Ventilation - AAON’s innovative use of energy recovery wheels and energy recovery plates combined with its superior humidity control design can help building management follow outdoor ventilation air recommendations while limiting an increase of energy usage and maintaining recommended humidity levels. Air Disinfection - AAON has basic design characteristics that allow for an easy installation of ultraviolet lighting equipment. In addition to this equipment offered as options in new AAON units sold, AAON has basic design characteristics that allow for easy installation in AAON units already used in the field. 4 Overall, AAON is well positioned to accommodate the heightened demand for features that can help mitigate virus transmission and improve indoor air quality. The features that ASHRAE recommends require premium designs and configurations that are standard in AAON units. As a result, we are able to incorporate air quality features into our units, at a minimal price premium and with no delivery delay. Representatives As of December 31, 2021, we employ a sales staff of 65 individuals and utilize approximately 64 independent manufacturer representatives’ organizations (“Representatives”) having 128 offices to market our products in the United States and Canada. We also have one international sales organization, which utilizes 28 distributors in other countries. Sales are made directly to the contractor or end user, with shipments being made from our Tulsa, Oklahoma, Longview, Texas, Parkville, Missouri, or Redmond, Oregon facilities to the job site. Historically, our products and sales strategy focused on niche markets. However, secular market trends related to the pandemic and indoor air quality, decarbonization and energy efficiency, and higher energy prices, have positioned the Company to focus on a wider spectrum of the nonresidential HVAC equipment industry. The targeted markets for our equipment are customers seeking products of higher performance and better quality than those offered, and/or options not offered, by standardized manufacturers. To support and service our customers and the ultimate consumer, we provide parts availability through our Representatives' sales offices, as well as our two Tulsa, Oklahoma AAON operated retail parts stores, to serve the local markets. We also have factory service organizations at each of our facilities. Additionally, a number of the Representatives we utilize have their own service organizations, which, in connection with us, provide the necessary warranty work and/or normal service to customers. Warranties Our product warranty policy is the earlier of one year from the date of first use or 18 months from date of shipment for parts only, including controls; 18 months for data center cooling solutions and cleanroom systems; five years for compressors (if applicable); 15 years on aluminized steel gas-fired heat exchangers (if applicable); 25 years on stainless steel heat exchangers (if applicable); and ten years on gas-fired heat exchangers in our historical RL products (if applicable). Our warranty policy for the RQ series covers parts for two years from date of unit shipment. Our warranty policy for the WH and WV Series geothermal/water-source heat pumps covers parts for five years from the date of installation. The Company also sells extended warranties on parts for various lengths of time ranging from six months to ten years. Revenue for these separately priced warranties is deferred and recognized on a straight-line basis over the separately priced warranty period. Major Customers One customer, Texas AirSystems, accounted for 10% or more of our sales during 2021, 2020, and 2019. No other customer accounted for more than 10% of our sales during 2021, 2020, and 2019. Backlog Our backlog as of February 1, 2022 was approximately $347.6 million, compared to approximately $103.8 million as of February 1, 2021. The current backlog consists of orders considered by management to be firm and our goal is to fill orders within approximately 60 to 90 days after an order is deemed to become firm; however, the orders are subject to cancellation by the customers in which case, cancellation charges apply up to the full price of the equipment. Competition At AAON Oklahoma and AAON Coil Products, we compete primarily with Lennox (Lennox International, Inc.), Trane (Trane Technologies plc), York International (Johnson Controls International plc), Carrier (Carrier Global Corporation), and Daikin (Daikin Industries). At BasX, we compete primarily with Vertiv (Vertiv Holdings Co.), STULZ (STULZ Air Technology Systems, Inc.), Munters, Silent Aire (Johnson Controls Internations plc), Nortek (Nortek Air Management), and Engineered Air. 5 All of these competitors are substantially larger and have greater resources than we do. Our products compete on the basis of total value, quality, function, serviceability, efficiency, availability of product, reliability, product line recognition, and acceptability of sales outlets. Historically, our premium equipment was sold at a higher average price compared to most of the competition. In the replacement market and other owner-controlled purchases, we have been successful at taking market share due to the total value proposition and lower cost of ownership our products provide to building owners over the life span of the equipment. In the new construction market where the contractor is the purchasing decision maker, we were often at a competitive disadvantage because of the emphasis placed on initial cost. However, due to operational efficiency improvements we have made over the last several years, we have been able to manage pricing so that the cost of our semi-custom equipment is more comparable to the standard equipment market. As a result, the value proposition of our higher quality equipment is more attractive, making us more competitive in both the new construction and replacement markets. Resources Sources and Availability of Raw Materials The most important materials we purchase are steel, copper, and aluminum. We also purchase from other manufacturers certain components, including coils, compressors, electric motors, and electrical controls used in our products. We attempt to obtain the lowest possible cost in our purchases of raw materials and components, consistent with meeting specified quality standards. We are not dependent upon any one source for raw materials or the major components of our manufactured products. By having multiple suppliers, we believe that we will have adequate sources of supplies to meet our manufacturing requirements for the foreseeable future. We attempt to limit the impact of price fluctuations on these materials by entering into cancellable and non-cancellable fixed price contracts with our major suppliers for periods of six to 18 months. We expect to receive delivery of raw materials from our fixed price contracts for use in our manufacturing operations. We have not been significantly impacted by the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Dodd-Frank Act”) that contains provisions to improve transparency and accountability concerning the supply of certain minerals, known as “conflict minerals”, originating from the Democratic Republic of Congo and adjoining countries. Working Capital Practices Working capital practices in the industry center on inventories and accounts receivable. Our management regularly reviews our working capital with a view of maintaining the lowest level consistent with requirements of anticipated levels of operation. Our greatest needs arise during the months of May - October, the peak season for inventory (primarily purchased material) and accounts receivable. Our working capital requirements are generally met by cash flow from operations and a bank revolving credit facility, which currently permits borrowings up to $100.0 million and had a $40.0 million outstanding balance at December 31, 2021. Borrowings available under the revolving credit facility at December 31, 2021, were $58.2 million. We believe that we will have sufficient funds available to meet our working capital needs for the foreseeable future. Research and Development Our products are engineered for performance, flexibility, and serviceability. This has become a critical factor in competing in the HVAC equipment industry. We must continually develop new and improved products in order to compete effectively and to meet evolving regulatory standards in all of our major product lines. AAON self-sponsors our Research and Development (“R&D”) activities, rather than needing to be customer-sponsored. R&D activities have involved the RQ, RN, and RZ (rooftop units), F1, H3, SA, V3, and M2 (air handling units), LF (chillers), CB and CF (condensing units), SA and SB (self-contained units), and WH and WV (water-source heat pumps), as well as component evaluation and refinement, development of control systems and new product development. R&D expenses incurred were approximately $16.6 million, $17.4 million, and $14.8 million in 2021, 2020, and 2019, respectively. Our NAIC research and development laboratory facility that opened in 2019, includes many unique capabilities, which, to our knowledge, exist nowhere else in the world. A few features of the NAIC include supply, return, and 6 outside sound testing at actual load conditions, testing of up to a 300 ton air conditioning system, up to a 540 ton chiller system, and 80 million BTU/hr of gas heating test capacity. Environmental application testing capabilities include -20 to 140°F testing conditions, up to 8 inches per hour rain testing, up to 2 inches per hour snow testing, and up to 50 mph wind testing. We believe we have the largest sound-testing chamber in the world for testing heating and air conditioning equipment and are not aware of any similar labs that can conduct this testing while putting the equipment under full environmental load. The unique capabilities of the NAIC will enable AAON to lead the industry in the development of quiet, energy efficient commercial and industrial heating and air conditioning equipment. The NAIC currently houses twelve testing chambers. These testing chambers allow AAON to meet and maintain AHRI and U.S. Department of Energy ("DOE") certification and solidify the Company’s industry position as a technological leader in the manufacturing of HVAC equipment. Current voluntary industry certification programs and government regulations only go up to 63 tons of air conditioning as that is the largest environmental chamber currently available for testing outside of our facility. The NAIC contains both a 100 ton and a 540 ton chamber, allowing us to uniquely prove to customers our capacity and efficiency on these larger units. The NAIC was designed to test units well beyond the standard AHRI rating points and allows us to offer testing services on AAON equipment throughout our range of product application. This capability is vital for critical facilities where the units must perform properly and allows our customers to verify the performance of our units in advance, rather than after installation. These same capabilities will enable AAON to develop a new extended range of operation equipment and prove its capabilities. In 2021, we invested in our first Electronic Prototype Lab at our Parkville, Missouri, location. This lab allows the AAON Controls Engineering team to experiment with new technology and create its own prototypes. A pick-and-place machine gives us the ability to place the latest components quickly, accurately, and reliably. The Electronic Prototype Lab allows AAON to increase speed to market and incorporate cutting-edge technology into our controls offering. Patents, Trademarks, Licenses, and Concessions We do not consider any patents, trademarks, licenses, or concessions to be material to our business operations, other than those described below. We hold several patents that relate to the design and use of our products. We consider these patents important, but no single patent is material to the overall conduct of our business. We proactively obtain patents to further our strategic intellectual property objectives. We own certain trademarks we consider important in the marketing of our products and services, and we protect our marks through national registrations and common law rights. Our patents have legal terms of 20 years with expiration dates ranging from 2022 to 2039. The Company’s trademarks, certain of which are material to its business, are registered or otherwise legally protected in the U.S. Seasonality Sales of our products are moderately seasonal with the peak period being May-October of each year due to timing of construction projects being directly related to warmer weather. Environmental & Regulatory Matters Laws concerning the environment that affect or could affect our operations include, among others, the Clean Water Act, the Clean Air Act, the Resource Conservation and Recovery Act, the Occupational Safety and Health Act, the National Environmental Policy Act, the Toxic Substances Control Act, regulations promulgated under these Acts and any other federal, state or local laws or regulations governing environmental matters. We believe that we are in compliance with these laws and that future compliance will not materially affect our earnings or competitive position. Since our founding in 1987, AAON has maintained a commitment to design, develop, manufacture, and deliver heating and cooling products to perform beyond all expectations and to demonstrate AAON’s quality and value to our customers. AAON equipment is designed with energy efficiency in mind, without sacrificing premium features 7 and options. In addition to our high standard of product performance, is a commitment to sustainability for our employees, our stockholders, and our customers. At AAON, we strive to conduct our business in a socially responsible and ethical manner with a focus on environmental stewardship, team member safety and community engagement. We comply with industry regulations and requirements while pursuing responsible economic growth and profitability. In 2021, we published our third annual environmental, social, and governance ("ESG") report highlighting sustainability practices, achievements, and long-term targets related to greenhouse gas emissions, hazardous waste recycling, and non-fossil fuel consuming products. AAON also participates in a sustainability benchmarking initiative (Sustainable Tulsa Scor3card) through which we monitor and report in the material areas of energy, material management, water, community stewardship, transportation, communication, and health. AAON achieved Platinum level in this program in 2021. We have an active ESG committee and an internal sustainability committee that provides education opportunities, communications and recommendations to the company on a regular basis. In the area of energy efficiency and conservation, AAON Oklahoma and AAON Coil Products have transitioned to over 95% LED lighting in our facilities leading to considerable cost savings and reduced energy consumption. BasX is installing LED lights into any new fixtures in their current leased facility and working towards retrofitting old fixtures to LED. The Company participates in an energy demand response program through the public utility provider to reduce demand during peak hours. Approximately one-quarter of AAON’s energy portfolio is currently derived from renewable sources, and the Company’s Scope 1 and 2 emissions (emissions that occur from sources that are controlled or owned by an organization and emissions associated with the purchase of electricity, steam, heat, or cooling) are being tracked as part of the Scor3card sustainability benchmarking initiative. Energy efficiency has been a priority not only in product development, but also in capital investments which include the acquisition of new, energy efficient equipment for the production floor, new high-speed overhead facility doors, the installation of new HVAC equipment, building control systems, the application of heat and light reflective material to production facilities, along with other behavioral-based energy efficiency changes. We are tracking our energy usage intensity before and after these updates. In the area of material management, we focus on recycling, reducing, reusing and sourcing more environmentally-friendly materials into our processes. AAON recycled over 13,793 tons and 11,741 tons of metal in 2021 and 2020, respectively. Through our partnership with a waste to energy facility, we successfully diverted over 460 tons and 556 tons of waste from landfills in 2021 and 2020, respectively. Our facilities also recycle paper, wood, and cardboard where available. We continue to innovate ways to reduce and reuse shipping packaging between facilities and identify new opportunities to reduce or reuse items in our production and administrative areas. Human Capital Resources Our employees are not represented by unions or other collective bargaining agreements. Management considers its relations with our employees to be good. The following table represents the number of our direct employees and contract personnel we employed on each respective date: As of As of As of February 22, 2022 February 23, 2021 February 21, 2020 AAON Oklahoma 1,979 1,778 1,889 AAON Coil Products 574 490 401 BasX 1 328 — — Total employees 2,881 2,268 2,290 1 BasX was acquired by the Company on December 10, 2021. We believe our employees are key to achieving our business objectives. In the early stages of the COVID-19 pandemic, we put COVID-19 prevention protocols in place to minimize the spread of COVID-19 in our workplaces. These protocols, which remain in place, meet or exceed state and local mandates. 8 Our key human capital measures include employee safety, turnover, absenteeism, and production. We frequently benchmark our compensation practices and benefits programs against those of comparable industries and in the geographic areas where our facilities are located. We believe that our compensation and employee benefits are competitive and allow us to attract and retain skilled and unskilled labor throughout our organization. Some of our notable health, welfare, and retirement benefits include: • Employee medical plan (with 175% employer health saving plan match) • 401(k) Plan (with 175% employer match) • Profit sharing bonus plan • Tuition assistance program • Paid time off Available Information Our Internet website address is http://www.aaon.com. 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 of 1934, as amended, will be available free of charge through our Internet website as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. The information on our website is not a part of, or incorporated by reference into, this annual report on Form 10-K. Copies of any materials we file with the SEC can also be obtained free of charge through the SEC’s website at http://www.sec.gov, at the SEC’s Public Reference Room at 100 F Street, N.E., Washington, D.C. 20549, or by calling the SEC at 1-800-732-0330.