UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-K

(Mark One)

For the fiscal year ended December 31, 20172021

OR

For the transition period from to

Commission file number: 001-36481

ASPEN AEROGELS, INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code (508) 691-1111

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

Securities registered pursuant to Section 12(g) of the Exchange Act: None

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

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

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

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter)during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    Yes   ☒     No   ☐

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.     ☒

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

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).     Yes   ☐     No   ☒

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

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

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).     Yes   ☐     No   ☒

The aggregate market value of the registrant’s common stock held by non-affiliates of the registrant (without admitting that any person whose shares are not included in such calculation is an affiliate) computed by reference to the price at which the common stock was last sold as of the last business day of the registrant’s most recently completed second fiscal quarter was approximately $86.6$936.7 million.

As of February 27, 2018,25, 2022, the registrant had 23,643,18933,234,316 shares of common stock outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Portions of the registrant’s definitive Proxy Statement for its Annual Meeting of Stockholders to be held on June 20, 20182, 2022 are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent stated herein.

TABLE OF CONTENTS

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PART I

Aspen Aerogels, Inc. is an aerogel technology company that designs, develops and manufactures innovative, high-performance aerogel insulationmaterials used primarily in the energy infrastructure, and building materials and electric vehicle markets. The CompanyWe have provided high-performance aerogel insulation to the energy infrastructure and sustainable building materials markets for more than a decade. We have also conductsrecently introduced a line of high-potential aerogel thermal barriers for use in battery packs in the electric vehicle market and other energy storage systems. In addition, we are developing applications for our aerogel technology in the battery materials and a number of other high-potential markets.

We have historically conducted research and development related to aerogel technology supported by funding from several agencies of the U.S. government and other institutions. institutions in the form of research contracts. We have decided to cease efforts to secure additional funded research contracts and to wind down existing contract research activities.

When used in this report, the terms “we,” “us,” “our” and “the Company” refer to Aspen Aerogels, Inc. and its subsidiaries.

We design, develop and manufacture innovative, high-performance aerogel insulation.insulation used primarily in the energy infrastructure and sustainable building materials markets. We believe our aerogel blankets deliver the best thermal performance of any widely used insulation product available on the market today and provide a combination of performance attributes unmatched by traditional insulation materials. Our products provide two to five times the thermal performance of widely used traditional insulation in a thin, easy-to-use and durable blanket form. Our end-useend-user customers select our products where thermal performance is critical and to save money, improve resource efficiency, enhance sustainability, preserve operating assets, and protect workers.

Our technologically advanced insulation products are principally targeted at the estimated $3.1$3.9 billion annual global market for energy infrastructure insulation materials. Our aerogel insulation has undergone rigorous technical validation and is used by many of the world’s largest oil producers and the owners and operators of refineries, petrochemical plants, liquefied natural gas facilities and power generating and distribution assets, such as ExxonMobil, Reliance Industries, PTT LNG, Dominion Resources and Royal Dutch Shell. Our products replace traditional insulation in existing facilities during regular maintenance, upgrades and capacity expansions. In addition, our aerogel products are increasingly being specified for use in new-build energy infrastructure facilities.

We introduced our two key aerogel insulation product lines for the energy infrastructure market, Pyrogel® and Cryogel®, in 2008. Pyrogel and Cryogel have undergone rigorous technical validation by industry-leading end-users and achieved significant market adoption. We introduced our aerogel insulation product for the building materials market, Spaceloft®, in 2008.2006. Our insulation product revenue has grown from $17.2 million in 2008 to $109.6$114.4 million in 2017,2021, representing a nine year compound annual growth rate of 23%17%. During this period, we have sold more than $719 millionnearly $1.2 billion of our insulation products globally, representing an installed base of more than 279400 million square feet of insulation. We believe that this initialour long-term record of success positions us for future growth and continued gain in market share.

We currently focus our commercial effortsshare in the energy infrastructure market, where we believe our products have the highest value applications. We also market and sell aerogel products for use within the building materials market. As we continue to enhance our aerogel technology platform, we believe we will have opportunities to address additional high value applications in the global insulation market and in a diverse set of new markets.

We have grown our business by forming technical and commercial relationships with industry leaders, which has allowed us to optimize our products to meet the particular demands of targeted market sectors. We have benefited from our technical and commercial relationships with ExxonMobil in the oil refinery and petrochemical sector, with TechnipFMC in the offshore oil sector, and with BASF in the sustainable building materials market. We will continue our strategy of working with innovative companies to target and penetrate additional opportunities in the energy infrastructure and sustainable building materials markets.

We are also actively developing a number of promising aerogel products and technologies for the electric vehicle market. We have developed and are commercializing our proprietary line of PyroThin® thermal barriers for use in battery packs of electric vehicles. Our PyroThin product is an ultra-thin, lightweight and flexible thermal barrier designed with other functional layers to impede the propagation of thermal runaway across multiple lithium-ion battery system architectures. Our thermal barrier technology is designed to offer a unique combination of thermal management, mechanical performance and fire protection properties. These properties enable electric vehicle manufacturers to achieve critical battery performance and safety goals.

In addition, we are seeking to leverage our patented carbon aerogel technology to develop industry-leading battery materials for use in lithium-ion battery cells. These battery materials have the potential to increase the energy density of the battery cells, thus enabling an increase in the driving range of electric vehicles.

During 2020 and 2021, we entered into multi-year production contracts with a major U.S. automotive manufacturer to supply fabricated, multi-part thermal barriers for use in the battery system of its next-generation electric vehicles. We are currently supplying thermal barrier production parts to both this major U.S. manufacturer and a major Asian automotive manufacturer. We are also supplying thermal barrier prototype parts to a number of other U.S., European and Asian manufacturers of electric vehicles, grid

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storage and home battery systems. During 2021, our first full year of serving the electric vehicle and energy storage market, opportunities.we sold $6.7 million of our PyroThin thermal barriers to ten customers.

The commercial potential for our PyroThin thermal barriers and our carbon aerogel battery materials in the electric vehicle market is significant. Accordingly, we are hiring additional personnel, incurring additional operating expenses, incurring significant capital expenditures to expand our aerogel manufacturing capacity, establishing an automated thermal barrier fabrication operation, enhancing research and development resources, and expanding our battery materials research facilities, among other items.

In addition, our Spaceloft building materials products are increasingly used by building owners to improve energy efficiency and to enhance fire protection in buildings ranging from historic brownstones to modern high rises. We also derive product revenue from a number of other end markets. Customers in these markets use our products for applications as diverse as military and commercial aircraft, trains, buses, appliances, apparel, footwear and outdoor gear. As we continue to enhance our Aerogel Technology Platform^TM, we believe we will have additional opportunities to address high-value applications in the global insulation market, the electric vehicle market and in a number of new, high-value markets, including hydrogen energy, filtration, water purification, and gas sorption.

Our patented aerogel productproducts and manufacturing technologies are significant assets. AerogelsSilica aerogels are complex structures in which 97% of the volume consists of air trapped between intertwined clusters of amorphous silica solids. These extremely low densitylow-density solids provide superior thermal and acoustic insulating properties. Although silica aerogels are usually fragile materials, we have developed innovative and proprietary manufacturing processes that enable us to produce industrially robust aerogel insulation cost-effectively and at commercial scale. We believe that our electrically conductive carbon aerogel materials are reaching development maturity and expanding our market opportunities in energy storage. These patented carbon aerogels are uniquely strong, providing the physical strength, charge and ion conductivity, and porosity required to host high concentrations of silicon in lithium-ion battery anodes. These silicon carbon aerogels have the potential to lower the costs and increase the energy density of electric vehicle battery systems.

Our insulation products help customersend-users to improve the resource efficiency, reduce energy consumption, and sustainabilityreduce the carbon footprint of their operations. OurThese products also enable compact system design, reduce installation time and costs, promote freight and logistics cost savings, reduce system weight, andminimize required storage space and enhance job site safety. Our insulation products reduce the incidence of corrosion under insulation, which is a significant maintenance cost and safety issue in energy infrastructure facilities. Many of our insulation products also offer strong fire protection, which is a critical performance requirement in our markets. We believe our array of product attributes provides strong competitive advantages over traditional insulation. Although competing insulation materials may have one or more comparable attributes, we believe that no single insulation material currently available offers all of the properties of our aerogel insulation products.

Our aerogel thermal barrier products are designed to enable our customers to enhance the safety and performance of their lithium-ion battery systems. These barriers are designed to impede the propagation of thermal runaway in lithium-ion battery systems at the battery cell, module and pack levels across multiple lithium-ion battery system architectures. Our ultra-thin, lightweight and flexible thermal barriers are designed to allow battery manufacturers to achieve critical safety goals without sacrificing energy density. We believe we offer the best technology available for the management of thermal runaway in the electric vehicle market.

Total revenue for the years ended December 31, 2017, 20162021, 2020 and 20152019 was $111.6$121.6 million, $117.7$100.3 million, and $122.5$139.4 million, respectively. For the years ended December 31, 2017, 20162021, 2020 and 2015,2019, based on shipment destination or research services location, our U.S. revenue was $51.4$66.8 million, $35.7$44.8 million, and $44.5$58.3 million, respectively, and our international revenue was $60.2$54.8 million, $82.0$55.5 million, and $78.0$81.0 million, respectively.

We manufacture our products using our proprietary technology at our facility in East Providence, Rhode Island. We have operated the East Providence facility since 2008 and have significantly increased our estimated annual revenue capacity in phases to approximately $250.0 million. To meet expected growth in demand for our aerogel products in the electric vehicle market, we are planning to expand our aerogel blanket capacity by constructing a second manufacturing plant in Bulloch County, Georgia. We expect to build the second plant in two phases at an estimated cost of approximately $575.0 million for the first phase and approximately $125.0 million for the second phase. We currently expect that the first phase of the plant will increase our annual revenue capacity by approximately $650.0 million and productivity since that date.the second phase by approximately $700.0 million. We

commenced expect to have the first phase of the second plant operational late in the second half of 2023. In addition, we are planning to construct and commence operation of a state-of-the-art, automated thermal barrier fabrication operation in Monterrey, Mexico, during 2022, in order to keep pace with the significant potential demand for our third production line inPyroThin thermal barriers.

In order to manage the East Providence facility in 2015 which increasedeffects of the COVID-19 pandemic on our annual nameplate capacitybusiness, we continue to 50 million square feetfollow safe practices recommended by public health authorities and other government entities. We will continue to focus on the safety and health of aerogel blankets.our employees, customers and vendors. We have initiated a series of projects designedimplemented various precautionary measures, including remote work arrangements, restricted

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business travel and procedures for social distancing, face coverings, safe hygiene, and vaccination requirements for all employees. We continue to increase this capacitymonitor public health guidance as it evolves and plan to 60 million square feet of aerogel blankets byadapt our practices as appropriate. Refer to the end of 2020. We have also completed the design and engineering of the first production line in a planned second manufacturing facilitysection below entitled “Item 1A. Risk Factors” for more information concerning risks to be located in Statesboro, Georgia supported by a package of incentives from the State of Georgia and local governmental entities. We have elected to delay construction of the Statesboro facility to better align the timing of this capacity expansionour business associated with our assessment of future demand.COVID-19.

Financial information about our product and research services revenues, net loss per share and our total assets are provided in our consolidated financial statements included elsewhere in this Annual Report on Form 10-K.

Our Markets and Competition

Our coreprincipal market is the energy infrastructure insulation market. This market is global, well-established and includes large and well-capitalized end-users. This market includes companies operating refinery, petrochemical, oil production, and LNG production and storage facilities. The market also includes firms operating gas, coal, nuclear, hydro and solar thermal power generating plants and district energy systems. Insulation systems in the energy infrastructure market are designed to maintain hot and cold process equipment, piping and storage tanks at optimal temperatures, to protect plant and equipment from the elements and from the risk of fire, and to protect workers. The market is served by a well-organized, well-established worldwide network of distributors, contractors, and engineers.

Demand for insulation in the energy infrastructure market is composed of demand associated with new-build construction of facilities, capital expansions and related capital projects, as well as with routine, non-discretionary maintenance programs within existing facilities. Capital expansions and related capital projects in the energy infrastructure market are driven primarily by overall economic growth and projected growth in energy demand. Maintenance programs are essential to optimal operation of process equipment, to protect workers and to minimize the risk of a catastrophic loss. Accordingly, we believe that demand for insulation for maintenance purposes in comparison to capital projects is less affected by volatility associated with economic cycles, energy prices and other macroeconomic factors.

The major end-useend-user markets that drive demand for our products include oil refining, petrochemical, natural gas and LNG production and storage, onshore oil production, offshore oil production and power generation. Global energy demand is expected to increase in the long-term and, in order to serve this growing demand, we believe our end-useend-user customers will continue to invest in major energy infrastructure projects.

We have also developed and commercialized a proprietary line of aerogel-based thermal barriers for use in battery packs of electric vehicles and energy storage systems. The market for our thermal barrier products encompasses batteries used in mobile platforms, including automobiles, trucks, buses and light aircraft, and fixed platforms, including home storage, grid storage and other commercial applications. The global lithium-ion battery market was estimated to be more than $40.0 billion in 2021 and continues to grow and evolve rapidly. Our thermal barrier technology offers a unique combination of thermal management, mechanical performance, and fire protection properties that enables electric vehicle manufacturers to achieve critical battery performance and safety goals. We believe that as the e-mobility and energy storage markets require increasingly powerful lithium-ion battery systems, the demand for our aerogel thermal barriers will grow rapidly as the market players seek to reduce the associated risk of thermal runaway.

We have entered into contracts with a major U.S. automotive original equipment manufacturer (OEM) to supply fabricated, multi-part thermal barriers for use in the production of the battery system of its next-generation electric vehicles. Pursuant to the contracts, we are obligated to supply the barriers at fixed annual prices and at volumes to be specified by the customer up to a daily maximum quantity through the term of the agreements, which expire at various times from 2026 through 2034. While the customer has agreed to purchase its requirement for the barriers from us at locations to be designated from time to time, it has no obligation to purchase any minimum quantity of barriers under the contracts. In addition, the customer may terminate the contracts any time and for any or no reason. All other terms of the contracts are generally consistent with the customer’s standard purchase terms, including quality and warranty provisions customary in the automotive industry.

We also sell our products for use in the sustainable building materials and other end markets, including for the fabrication of insulation parts by original equipment manufacturers, or OEMs. These OEMs develop products incorporating our aerogel blankets for applications asin a diverse asset of markets including military and commercial aircraft, trains, buses, appliances, apparel, footwear and outdoor gear. While these are not presently our core markets, we anticipate that we will allocate a growing portion of our manufacturing capacity to serve these markets in the long term. We believe the key performance criteria for insulation in these markets and applications include thermal performance, compact design, durability and fire resistance.

We operate in a highly competitive environment. In general,the energy infrastructure and sustainable building materials markets, we compete with traditional insulation materials based on product performance, price, availability and proximity to the customer. Customers may choose among a variety of insulation materials that offer a range of characteristics including thermal performance,

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durability, vapor permeability, moisture resistance, ease of installation and upfront and lifecycle costs. Within each type of insulation material, there is also competition between the manufacturers of that material. Most types of traditional insulation materials are produced by a number of different manufacturers and once customers have chosen the type of insulation material that they intend to use, they will choose a manufacturer of that material based primarily on each manufacturer’s price and delivery schedule. Insulation manufacturers include a range of large, high-volume, multinational manufacturers offering branded products and strong technical support services to small, low-volume, local manufacturers offering low prices and limited customer support.

We believe the primary competitive factors in our marketthese markets are:

Our products are priced at a premium to traditional insulation materials. While our competitors offer many traditional insulation products that are priced below our products on a per-unit basis, we believe our products have superior performance attributes and may have the lowest cost on a fully-installed basis or offer significant life-cycle cost savings.

Competition in the thermal barrier market is evolving. We believe our patented aerogel thermal barrier technology offers a unique combination of attributes to mitigate thermal runaway in lithium-ion battery systems. These attributes include industry-leading thermal performance, limited combustibility, tunable compressibility and scalable density. We expect to face increasing competition within the thermal barrier market over the next several years as new entrants seek to develop and market their own technologies and solutions.

We compete in the aerogel insulationmaterials market with Cabot Corporation, and a growing number of other competitors, includingArmacell International S.A., Guangdong Alison Hi-Tech Co., Ltd. and Nano Tech Co., Ltd. and a growing number of other competitors that manufacture, and sell aerogelor resell aerogel-based insulation products. We expect to face increasing competition in the aerogel insulation market over the next several years as existing competitors and new entrants seek to develop and market their own aerogel products. In addition to other aerogel insulation products, we also encounter competition from innovatively packaged traditional insulation materials that compete with our products based on one or more performance factors.

Within each of our target markets, we encounter one or more of these organizations or their resellers and a significant number of other aggressive national, regional and local suppliers of traditional insulation products. Our competitors are seeking to enhance traditional insulation materials and to develop and introduce new and emerging insulation technologies. Competing technologies that outperform our insulation products in one or more performance attributes could be developed and successfully introduced. See “Risk Factors —The energy infrastructure insulation market ismarkets we serve are highly competitive; ifcompetitive. If we are unable to compete successfully, we may not be able to increase or maintain our market share and revenues.”

Our market share in 20172021 was less than 4%approximately 3% of the estimated $3.1$3.9 billion annual global market for energy infrastructure insulation materials. Our market share in 2021 in the sustainable building materials, thermal barrier, and other markets was either not significant or not measurable. Many of our competitors have greater market presence, larger market share, longer operating histories, stronger name recognition, larger customer bases and significantly greater financial, technical, sales and marketing, manufacturing and other resources than we have and may be better able to withstand volatility within the industry and throughout the economy as a whole, while retaining greater operating and financial flexibility. If our competitors lower their prices, or develop new products with better performance, or if we are unable to compete effectively, our growth opportunities, share of the market, margins and profitability may decline.

Our Competitive Strengths

Because insulation is used in a wide variety of demanding applications, insulation materials must satisfy a wide range of performance criteria on a cost-effective basis. We believe that our aerogel technology has allowed us to create superior insulation products for our core markets thatand will allow us to continue to grow our share of the global insulation market.energy infrastructure, sustainable building materials and thermal barrier markets. We believe that the potential for significant technological innovation in traditional insulation materials is limited and that new high-performance materials will be required to meet evolving market requirements for energy efficient insulation and thermal barrier systems. Our line of high-performance aerogel blanketsproducts is positioned to meet these requirements. Our solution issolutions are driven by our innovative and proprietary technology that produces aerogels in a flexible and industrially robust blanket form and is supported byform. Our solutions also benefit from over 20 years of research and development dedicated to new aerogel compositions, form factors and manufacturing technologies. We believe our aerogel blankets deliver a superior combination of performance attributes that enable energy

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infrastructure and sustainable building materials end-users to save money, improve resource efficiency, preserve operating assets and protect workers across a wide range of applications in our target markets. We believe our patented aerogel thermal barriers offer an industry-leading combination of attributes to mitigate thermal runaway in lithium-ion battery systems.

We believe the following combination of capabilities distinguishes us from our competitors and positions us to continue to gain market share in the energy infrastructure, insulation market:sustainable building materials, and electric vehicle markets:

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Our Growth Strategy

We are targeting continued expansion of the use of our products within energy infrastructure facilities during regular maintenance, upgrades and expansions. In addition to opportunities to replace traditional insulation at existing facilities, we are also pursuing insulation applications at new-build and large capacity expansion projects around the world.

Our strategy is to create economic value by leveraging our technological and market leadership in aerogels to be the premier provider of high-performance insulationaerogel products serving the global electric vehicle and energy infrastructure customers.markets. We also will pursue high-value opportunities for our aerogel insulation products within other segments of the global insulation market, including thesustainable building materials market.market and a diverse set of new markets. In addition, we will leverage our aerogel technology platform to develop innovative, aerogel enhancedaerogel-enhanced products for applications outside of the global insulation market. During 2018, we intend to invest approximately $6.0 million in incremental manufacturing and operating expense with the objective of restoring long-term growth in our existing markets and to develop new business opportunities. This incremental expense is associated, in large part, with our plan to add 49 new employees to our team during the year.

Key elements of our strategy include:

Broaden Energy Market Diversity and Grow Market Share. We plan to focus additional resources to continue to grow our share of the energy infrastructure insulation market, both through increased sales to our existing customers and through sales to new customers. We plan to continue to expand our global sales and distribution network and seek to promote greater enterprise-wide adoption of our products by existing end-use customers. To date, the majority of our revenue has been generated from applications in refineries and petrochemical facilities. We will continue to pursue and expect greater adoption of our products in district heating, LNG production and storage, and power generation markets. In addition, our product revenue has been and will continue to be generated in large part by demand for insulation associated with scheduled plant shutdowns, or turnarounds, and other maintenance-related projects. With broad adoption of our products and our growing installed base, we expect that our products will be specified at increasing rates during the design phase in a growing number of new-build and capital expansion projects. We also expect that growth in global energy demand over time will result in increased new-build and large capacity expansion projects, driving demand for our aerogel products.

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Our Aerogel Products

AerogelsSilica aerogels are highly porous structures in which 97% of the volume consists of air trapped between intertwined clusters of amorphous silica solids. AerogelsSilica aerogels are a very low densitylow-density solids and are extremely fragile materials. However, our proprietary manufacturing process produces silica aerogels in a flexible, resilient, durable and easy-to-use blanket form.

The core raw material in the production of our aerogel insulation products is silica precursors. Our manufacturing process initially creates a semi-solid alcogel in which the silica structure is filled with ethanol. We produce aerogel by means of a supercritical extraction process that removes ethanol from the gel and replaces it with air. Our process allows the ethanol to be extracted without causing the solid matrix in the gel to collapse from capillary forces.

Our material costs were 45%48%, 41%44%, and 45%48% of product revenue for the years ended December 31, 2017, 20162021, 2020 and 2015,2019, respectively. We are seekingseek to lower our manufacturing costs, while maintaining appropriate performance characteristics, and to improve the per square foot costs of our silica aerogel blankets by optimizing our formulations andto reduce material costs, by enhancing manufacturing processesprocess controls to improve yields, by realizing price reductions from existing vendors, by qualifying new vendors for certain materials and by reducing shipping costs. Our objective is both to reduce costs to enhance our competitive advantageposition and to ensure we deliver high quality products to our customers.

The materials used in the production of our silica aerogel products consist primarily of fiber battings,several silica precursors, fiber batting, and ethanol, which is used in the delivery of the silica precursors. Multipleother additives. The markets for these materials are generally competitive and multiple sources of supply exist for all of our raw materials. However, from time-to-time, we have experienced a significant increase in the price of certain silica precursors due to supply imbalances in the silanes market. We are actively working to reformulate our products to reduce our reliance on the materials that are susceptible to significant price fluctuations. We are also working to expand the geographic diversity of our supply base to reduce the risk of demand and we believe the markets for these products are competitive and prices are relatively stable. supply imbalances in any one country or region.

We purchase silica precursors from several suppliers.suppliers in the United States, Europe and Asia, including China. Based on the current level of demand for our products, we believe that an adequate long-term supply of silica precursors is available. However, if demand for our products increases rapidly, we will need to work with suppliers to ensure that an adequate long-term supply of silica precursors will be available at competitive prices. Suppliers of silica precursors include industrial companies that produce itthe materials directly or that produce itthem as a byproduct of other industrial processes. We are working with a number of these suppliers to plan for our potential future needs and to develop our processes to reduce the long-term cost impact of these materials. We are also considering investing in the technology and the capital assets required to produce certain critical silica precursors in our planned aerogel manufacturing facility in Bulloch County, Georgia. See “Risk Factors — Shortages of the raw materials used in the production of our products, increases in the cost of such materials or disruptions in our supply chain could adversely impact our financial condition and results of operations.”

Our aerogel blankets are reinforced with fiber batting. We manufacture and sell our blankets in 60 inch wide, three foot60-inch-wide, three-foot diameter rolls with a standard range of thickness of 5two millimeters to 10ten millimeters. Our base products are all flexible, hydrophobic, vapor permeable, compression resistant and able to be cut and fabricated using conventional tools. We have specifically developed our line of aerogel blankets to meet the requirements of a broad set of applications within our target markets. The composition and attributes of our standard aerogel blankets are described below:

Electric Vehicle & Energy Storage Market

Energy Infrastructure Markets

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Other Markets

R-Values by Material

Insulation is a material or combination of materials that slows the transfer of heat from one side of the material to the other. The composition of our aerogel products minimizes the three mechanisms of thermal transport:

We believe our aerogel products offer the lowest levels of thermal conductivity, or best insulating performance, of any widely used insulation or thermal barrier available on the market today.

The lower a material’s thermal conductivity, the more slowly heat is transferred through the material. R-values are a commonly used measure of an insulating material’s resistance to heat transfer. R-value is calculated as the thickness of an insulation material divided by the thermal conductivity of the insulation material. Materials with higher R-values have lower thermal conductivity and are better insulators. Traditional and specialty insulation materials provide a range of R-values. Aerogels have the highest R-value per unit of thickness in comparison to traditional insulation materials.

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Qualification for Use

Our products have undergone rigorous testing and are now qualified for global usage in both routine maintenance and in capital projects at many of the world’s largest oil producers, refiners, and petrochemical companies.companies, and within the next-generation lithium-ion battery systems of two of the largest global automotive manufacturers. These end-users of our products have well definedwell-defined practices, codes, specificationspecifications and standards for materials and systems installed in their vehicles or used in their facilities. These specifications include insulation system design standards, material qualification and selection processes, and insulation application practices.practices, and quality control requirements. As part of the material qualification process established by these companies, a new insulation or thermal barrier product must meet general industry standards, such as consensus standards developed by ASTM International, and, in somemany cases, company-specific internal standards to be considered and approved for use.use or designed into vehicle platforms. In addition, most of these companies require one or more field trials of tests to evaluate fitness for use in specific applications. TheThese companies either run these qualification processes and field trials internally or through third parties engaged by them, and they generally do not publicly disclose the results of their testing. While the specific processes and timelines vary from company to company, in general, upon successful completion of the qualification process for an insulation or thermal barrier product, an end-user will typically deem the product to be qualified for use in its facilities on a local, regional or global basis for one or more applications.applications or vehicles. Because our end-useend-user customers are typically businesses with very large operations in multiple sites, our insulation or thermal barrier sales likely represent only a small portion of the total insulationproduct used by any one of these companies. Accordingly, once our products are qualified or designed into a platform at a specified company, we continue to seek to expand the use of our products by the end-use customer in additional applications, and at multiple locations.platforms, locations or vehicles.

Our Sales Channel

We market and sell our products primarily through our global sales force. Our sales personnel are based in North America, Europe and Asia and travel extensively to market and sell our products to new and existing customers. The efforts of our sales force are supported by a small number of sales consultants with extensive knowledge of a particular market or region. Our sales force establishes and maintains customer and partner relationships, delivers highly technical information and provides first classfirst-class customer service. We plan to expand our sales force and business development resources globally to support anticipated growth in customers and demand for our products.

Our sales force calls on and maintains relationships with participants at all levels of the insulation industryenergy infrastructure supply chain. We have established a network of insulation distributors to ensure rapid delivery of our products in critical regions. Our sales personnel work to educate insulation contractors about the technical and operating cost advantages of aerogel blankets. Our sales force also works directly with end-users and engineering firms to promote qualification, specification and wider acceptance of our products in existing and new applications. In the energy infrastructure market, we rely heavily on the existing and well-established channel of distributors and contractors to deliver products to our customers. In addition, our sales and business development personnel work directly with OEMs and strategic partners, including within the electric vehicle industry, to create new productsproduct designs and solutions to expand our market reach.

The sales cycle for a new insulation material or thermal barrier is typically lengthy. Our sales cycle from initial customer trialscontact to widespread use can take from one to three years, although we typically realize increasing revenue at each stage in the cycle. We believe our relationships with technically sophisticated customers and strategic partners serve to validate our technology, products and value proposition within a target market. These relationships have proven to accelerate the sales cycle with other customers within specific markets and to facilitate growth in market share. We have focused our marketing efforts on developing technical support materials, installation guides, case studies and general awareness of the superior performance of our aerogel blankets.blankets and thermal barriers. We rely principally on our website, social media, printed technical materials, participation in industry conferences and tradeshows and presentation of technical papers to communicate our message to existing and potential customers. We also receive strong word-of-mouth support from the growing network of distributors, installation contractors, OEMs, strategic partners and end-users that understand the benefits of our products.

As of December 31, 2017,2021, we had 3863 sales and marketing professionals worldwide. Their efforts were supported by a team of eightten sales consultants.

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Our Customers and End-Users

Customers

EnergyInfrastructure

Our primary customers in the energy infrastructure market are distributors, installation contractors and OEMsfabricators that stock, install and fabricatecustomize insulation products, components and systems for technically sophisticated end-users that require high-performance insulation.

Although customer programs typically extend to future periods, and although there is an expectation that we will supply certain levels of automotive OEM production during such future periods, customer agreements including applicable terms and conditions do not constitute firm orders. Firm orders are generally limited to specific and authorized customer purchase order releases. Firm orders are typically fulfilled as promptly as possible from the conversion of available raw materials, sub-components and work-in-process inventory for OEM orders. The dollar amount of such purchase order releases on hand and not processed at any point in time is not believed to be significant based upon the time frame involved.

Additional Customer Information

Distribution International, Inc. and TechnipFMC plc represented 15% and 12%, respectively,28% of our total revenue for 2017in 2021 and werewas our only customerscustomer representing 10% or more of our revenue for that period.

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Our product revenue is generated by sales to customers around the world. In 2017, 46%2021, 55% of our product revenue was generated in the United States, 32%23% in Asia-Pacific, 15%Europe, 16% in Europe,Asia, 4% in Latin America, and 2% in Canada and less than 1% in the Middle East based on shipment destination.

A substantial portion of our sales are to shipment destinations located outside of the United States, including Korea, India, Hong Kong,France, Norway, Brazil,Thailand, Russia, Canada, Germany, Taiwan, Australia, Great Britain, GermanyColumbia, and the Netherlands based on our shipment destination.South Korea. Total revenue generated from outside of the United States amounted to $60.2$54.8 million or 54%45% of total revenue, $82.0$55.5 million or 70%55% of total revenue and $78.0$81.0 million or 64%58% of total revenue, in the years ended December 31, 2017, 20162021, 2020 and 2015,2019, respectively. In addition, we may continue to expand our operations outside of the United States. As a result, we are subject to a number of risks; seerisks. See “Risk Factors — A substantial portion of our revenue comes from sales in foreign countries and we may expand our operations outside of the United States, which subjects us to increased economic, foreign exchange, operational and political risks that could increase our costs and make it difficult for us to operate profitably.”

End-Users

The end-users of our aerogel blankets and thermal barriers include some of the largest and most well capitalizedwell-capitalized companies in the world. Our products are installed in more than 4050 countries worldwide.

Energy Infrastructure

Power Generation:Electric Vehicle Market

Our thermal barrier products are in use today in electric vehicle battery systems of a major U.S. automotive manufacturer and a major Asia-based automotive OEM with a leading global platform. We believe our customer base will expand in the near term to include additional electric vehicle manufacturers, Tier 1 automotive suppliers, lithium-ion battery manufacturers, and e-mobility and energy storage companies.

Our carbon aerogel program seeks to increase the performance of lithium-ion battery cells to enable electric vehicle manufacturers to extend the driving range and reduce the cost of electric vehicles, among other uses. We are targeting operatorsthe manufacturers of gas, coal, nuclear, hydrobattery components, batteries, grid battery systems, and solar power generating facilities. Our products are currently used at facilities owned and operated by NextEra Energy Resources, among others.electric vehicles as potential customers for our carbon aerogel materials.

Sustainable Building Materials and Other Markets

Traditionally, we have relied on the efforts of a small network of partners, OEMs and fabrication houses to serve the sustainable building materials, transportation, apparel and appliance markets. These partners, OEMs and fabricators are manufacturers of components and systems for buildings, refrigerated and hot appliances, cold storage equipment, automobiles, aircraft, trains,

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electronics, and electronic sectors and manufacturers of outdoor gear and apparel. In addition, we have partnered with BASF to develop and commercialize innovative products optimized to meet the needs of the building materials market. While our products have not yet been widely adopted in these markets, we expect that theThe end-users of our products in these markets will include a wide range of institutions, businesses, individuals, municipalities and government agencies.

Manufacturing

We manufacture our products using our proprietary technology at our facility located in East Providence, Rhode Island. We have operated the East Providence facility since 2008 and have significantly increased manufacturing capacity and productivity during the period. Our manufacturing process is proven scalable and canhas been scaled to meet increasing demand.

Our manufacturing group is led by a seasoned team with management experience at global industrial and specialty chemical companies. Our manufacturing workforce is experiencedskilled and to date, we have experienced employee turnover consistent with others in our industry. We have well-defined operating processes and maintenance, environmental, health and safety programs and operating processes in place.to support our operations. We employ statistical processes and quality controls in our manufacturing systems. We routinely measure and monitor thermal conductivity, hydrophobicity and other key properties of ourthe aerogel blankets during theproduced in our manufacturing process.operations. We are ISO 9001:2015 certified.

We successfully commenced operation of our third production line athave operated the East Providence facility in 2015, whichsince 2008 and have increased our annual nameplate capacity in phases since that time. To meet expected growth in demand for our aerogel products in the electric vehicle market, we are planning to 50 million square feetexpand our aerogel blanket capacity by constructing a second manufacturing plant in Bulloch County, Georgia. We expect to build the plant in two phases with the first phase operational late in the second -half of aerogel blankets. We have initiated a series of projects designed to increase the nameplate capacity of the East Providence facility by an additional 10 million square feet of aerogel blankets by the end of 2020 at a projected cost of between $15 million and $20 million. This series of projects is designed to improve manufacturing productivity and capital efficiency through a phased deployment of enhanced chemical and process technologies.

2023. In addition, we have completed the design and engineering of a planned first production line in a second manufacturing facility to be constructed on a 43 acre site in Statesboro, Georgia. The site is served by rail and provides convenient access to local ports. State and local governmental authorities have agreed to provide us with a package of incentives including outright grants, free land, infrastructure support, tax credits and abatements, training programs and related benefits.

Based on our plans for the second facility, our projected costare planning to construct plant infrastructure and a first production linestate-of-the-art, automated thermal barrier fabrication operation in two phases is between $120 million and $130 million. We currently expectMonterrey, Mexico in order to keep pace with the first line will increasesignificant potential demand for our estimated annual nameplate capacity by 40 million square feet of aerogel blankets. The plant site, layout and design will support future development of two additional similar production lines. We have elected to delay construction of the Statesboro facility to better align the timing of this capacity expansion with our assessment of future demand.PyroThin thermal barriers.

We directly control all stages in the manufacture of our aerogel blankets. Our direct ownership of manufacturing operations allows us to maintain control of proprietary process technologies and to control product quality. Our production of aerogel blankets utilizes a continuous process and consists of the following key steps:

Our material costs were the equivalent of 45%48%, 41%44%, and 45%48% of product revenue for the years ended December 31, 2017, 20162021, 2020 and 2015,2019, respectively.

The materials used in the production of our products consist primarily of fiber battings,several silica precursors, fiber batting, and ethanol, which is used in the delivery of the silica precursors. Multipleother additives. The markets for these materials are generally competitive and multiple sources of supply exist for all of our raw materials. However, from time-to-time, we have experienced a significant increase in the price of certain silica precursors due to a supply imbalance in the silanes market. We are actively working to reformulate our products to reduce our reliance on materials that are susceptible to significant price fluctuations. We are also working to expand the geographic diversity of our supply base to reduce the risk of demand and we believe the markets for these products are competitive and prices are relatively stable. supply imbalances in any one country or region.

We purchase silica precursors from several suppliers.suppliers in the United States, Europe and Asia, including China. Based on the current level of demand for our products, we believe that an adequate long-term supply of silica precursors is available. However, if demand for our products increases rapidly, we will need to work with suppliers to ensure that an adequatethe long-term supply of silica precursors will be available.available at competitive prices. Suppliers of silica precursors include industrial companies that produce itthe materials directly or that produce itthem as a byproduct of other industrial processes. We are working with a number of suppliers to plan for our potential future needs and to develop our processes to reduce the long-term cost impact of these materials. We are also considering investing in the technology and the capital assets required to produce certain critical silica precursors used in our products.planned aerogel manufacturing facility

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in Bulloch County, Georgia. See “Risk Factors — Risks Related to Our Business and Strategy — Shortages of the raw materials used in the production of our products, increases in the cost of such materials or disruptions in our supply chain could adversely impact our financial condition and results of operations.”

We are seekingseek to lower our manufacturing costs, while maintaining appropriate performance characteristics, and to improve the per square foot costs of our aerogel blankets by optimizing our formulations andto reduce material costs, by enhancing manufacturing processesprocess controls to improve yields, by obtaining materialrealizing price reductions from existing vendors, by qualifying new vendors for certain materials and by optimizingreducing shipping costs. In addition, we believe additional opportunities to realize production efficiencies and to reduce per unit overhead costs will arise with growth in the scale of our manufacturing operations. Our objective is both to reduce costs to enhance our competitive advantage and to ensure we deliver high quality finished products to our customers.

Research and Development

The mission of our research and development team is to leverage our aerogel technology platform in support of our commercial objectives. In our existing markets, research and development personnel design new and improved insulation and thermal barrier products to enhance our value to customers and to expand our revenue potential. Our materials scientists and engineers also seek to develop enhanced chemical and process technologies to improve yields, lower manufacturing costs and improve product performance. In new markets, research and development personnel seek to exploit the unique characteristics of aerogels, including low thermal conductivity, high surface area, high electrical conductivity, and tunable porosity, to develop aerogel enhancedaerogel-enhanced products and next generation technology addressing complex and unmet market needs.

Our research and development expenditures were $6.2$11.4 million, $5.3$8.7 million, and $5.3$8.4 million for the years ended December 31, 2017, 20162021, 2020 and 2015,2019, respectively. In addition, we spent $0.9$0.1 million, $1.3$0.1 million and $1.0$1.3 million for the years ended December 31, 2017, 20162021, 2020 and 2015,2019, respectively, on research and development activities sponsored by federal and other government agencies.

Contract Research and Government Support

We regularly seekhave received funding from a number of federal and other government agencies, in support of our research and development and manufacturing activities. Research performed under contract toincluding the Department of Defense, the Department of Energy and other institutions, allows us to developin support of our research and leverage technologies into broader commercial applications.development and manufacturing activities. We have also workworked closely with customers in government and industry to develop potential aerogel solutions that leverageleveraged not only the thermal insulation performance but other benefits of aerogels as well. The

In late 2019, we decided to wind down our existing contract research activities. This decision reflected our desire to focus our research and development activities that we conduct under such contracts may produce intellectual propertyresources on initiatives to which we may not have ownership or exclusive rights and will be unable to protect or monetize.

Under our contracts,improve the U.S. government generally has the right not to exercise options to extend or expand our contracts and may modify, curtail or terminate the contracts at its convenience. Our government customers may not renewprofitability of our existing contracts after the conclusion of their termsbusiness and we may not be ableon efforts to enter intodevelop new contractsproducts and next generation technology with U.S. government agencies. Any decision by the U.S. government not to exercise contract options or to modify, curtail or terminate our contracts or not to renew our contracts or enter intoapplication in new, contracts with us would adversely affect our revenues.high value market segments.

We have received $53.7$59.2 million in funding under government contracts from our inception through December 31, 2017.2021. Our contract research revenue was $2.0$0.5 million, $2.2$0.4 million and $2.0$2.4 million for the fiscal years ended December 31, 2017, 20162021, 2020 and 2015,2019, respectively.

Intellectual Property

Our success depends in part upon our ability to obtain, maintain and enforce intellectual property rights that cover our aerogel technology platform, including, product forms, applications and/or manufacturing technologies and the technology or know-how that enables these product forms, applications, technologies and specifications, to avoid and defend against claims that we infringe the intellectual property rights of others, and to prevent the unauthorized use of our intellectual property. Since aerogels were developed more than 80 years ago, there has been a wide range of research, development and publicationpublications on aerogels and related technologies, which make it difficult to establish intellectual property rights to many key elements of aerogel technology and to obtain meaningful patent protection. Where appropriate, we seek to protect our rights by filing patent applications in United Statesthe U.S. and other key foreign jurisdictions related to products, processes, technology and improvements that we consider patentable and important to our business and, in particular, our aerogel technology, product forms and their applications in promising markets and our manufacturing technologies. We also rely on trade secrets, trademarks, licensing agreements, confidentiality and nondisclosure agreements and continuing technological innovation to safeguard our intellectual property rights and develop and maintain our competitive advantage.edge.

As of December 31, 2017,2021, we owned 3963 issued U.S. patents, 2345 pending U.S. patent applications (including threeeight issued U.S. patents and one pending U.S. patent application that we co-own with third parties), 68130 issued foreign patents, and 71136 pending foreign patent applications (including 1828 issued foreign patents and threefive pending foreign patent applications that we co-own with third parties)., and one allowed foreign patent. The U.S. patents that we own are generally effective for 20 years from the filing date of the

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earliest application to which each U.S. patent claims priority. The scope and duration of each of our foreign patents varies in accordance with local law. Our early patents start to expireproduct patent family covering a fiber-reinforced aerogel composition expired in December 2021.

In May 2016, we filed a complaint for patent infringement against Nano Tech Co., Ltd. (Nano), or Nano, and Guangdong Alison Hi-Tech.Hi Tech., Ltd., or Alison and together with Nano, the Respondents, (Alison) in the United States International Trade Commission, or the ITC. The ITC complaint alleged that these two China-based companies have engaged and are engaging in unfair trade practices by importing aerogel products in the United States that infringe, and/or are manufactured by processes that infringe, several of our patents in violation of Section 337 of the Tariff Act of 1930, or the Tariff Act. In the ITC complaint, we sought exclusion orders from the ITC that direct the United States Customs and Border Protection to stop the importation of these infringing products. In June 2016, the ITC instituted an investigation based on our complaint. In September 2017, the Administrative Law Judge (“ALJ”) presiding over the ITC investigation issued an Initial Determination finding that Alison and Nano have infringed three of our patents relating to aerogel insulation and/or methods of manufacturing aerogel insulation. As part of the Initial Determination, the ALJ found that Alison and Nano infringed all of the patent claims asserted against each of them across the three asserted patents, and that Alison and Nano failed to prove the asserted claims were invalid. The ALJ also recommended a limited exclusion order as a remedy to prevent the importation of infringing aerogel products into the United States. On February 5, 2018, the ITC issued its final determination confirmingthat Nano and Alison had infringed asserted Aspen patents and that they have not proven the ALJ’s infringement and validity determinationspatents are invalid except with respect to one dependent product claim, wherewhich the ITC found the claimwas not infringed. The ITC also revised some of the ALJ’s claim constructions. However, the ITC affirmed that Alison and Nano have each violated Section 337 of the Tariff Act and therefore issued a limited exclusion order prohibiting importation of infringing aerogel insulation products manufactured by Alison and Nano. The exclusion order, which will be enforced by United States Customs and Border Protection, is subjectAlison’s appeal with respect to a 60-day presidential review period, but is otherwise expected to be in full effect starting on April 6, 2018. Upon a request by a party, the final determination may be appealedproduct patent to the United States Court of Appeals for the Federal Circuit. In additionCircuit (CAFC) was rejected, and resulted in CAFC affirming the validity of our patent. The exclusion order, which is enforced by the United States Customs and Border Protection, is currently in effect.

Additionally, the USPTO denied Alison’s requests to Respondents’ contention atinvalidate the ITC that the assertedclaims of four of our patents were invalid,in Inter-Partes Review. Alison also filed petitions with United States Patent and Trademark Office, or USPTO, requesting Inter-Partes Review to cancel certain claims in three of Aspen’s manufacturing process patents and one product patent. A three member panel of Administrative Patent Judges at the USPTO denied all of Alison’s petitions to institute Inter-Partes Review challenging the validity of these Aspen patents. Alison has also filedmultiple similar requests with the Chinese Patent Office or SIPO,(SIPO), seeking to invalidate two of our Chinese manufacturing process patents and two of our Chinese product patents. With respect to one of those requests, not withdrawn previously by Alison, the Patent Review Board of SIPO (PRB), issued a decision upholding the validity of Aspen’s issued patent as amended in the proceedings. Alison has appealed the PRB’s decision to the Beijing IP court. On July 25, 2020, the Beijing IP court dismissed Alison’s appeal and upheld the validity of Aspen’s patent and we received this decision on September 15, 2020. Nano has also filed a request seeking invalidation of a product patent at SIPO. After the conclusion oforal hearing at PRB, Nano withdrew its invalidation request. On September 23, 2019, Alison filed yet another request to invalidate the oral proceedings and before any decision issuedsame patent, whose validity was previously confirmed by the SIPO, Alison withdrew all of its requests forPRB. On January 23, 2020 PRB denied Alison’s latest invalidation of our Chinese patents.request.

In April 2016, we also filed a patent infringement suit at the District Court in Mannheim, Germany (Mannheim court), against the RespondentsNano, Alison and two European resellers asserting their infringement of one of our German patents. We subsequently asserted infringement of another three patents against Nano, Alison and a European reseller of Alison’s products at the Mannheim court. In 2016, weWe have since settled with one of the European resellersreseller in exchange for a commitment not to procure infringing products and cooperation with our case.

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Additionally, a seriesreseller of judgments by acknowledgement (German, “Anerkenntnisurteil”) finding the second reseller, Hiltex Techniche Weefsels b.v., or Hiltex, liable for infringement and issued injunctions against Hiltex preventing its resale of infringing Chinese aerogels. The judgments resulted from a settlement agreement whereby Hiltex agreed not to resell infringingNano’s products in Europe where at least oneTaiwan challenged the validity of the asserted patents is active. The litigation against the other defendants is ongoing. Nano has also initiated a nullity action in German Federal Patent Court against one of our asserted German manufacturing process patents. Alison likewise filed an opposition topatents in Taiwan in 2018. After careful review of our written response, the Taiwanese patent office has determined the patent as valid and dismissed the challenge in December 2018. In 2018, LG Chem Ltd. challenged the validity of one of the assertedour patents in Korea at the EuropeanIPTAB of the Korean Intellectual Property Office. After conducting an oral hearing, the IPTAB issued a decision on November 30, 2019 upholding claims related to aerogel sheets incorporating fibers. On January 14, 2021, the Korean Patent Office, or EPO, and also initiated nullity actions against two other patents. Nano also filed an opposition againstCourt confirmed the same patent atvalidity of the EPO.claims related to aerogel sheets incorporating fibers.

Due to their nature, it is difficult to predict the outcome or the costs involved in any litigation. Furthermore, the Respondentsour adversaries may have significant resources and interest to litigate and therefore, these litigation matters could be protracted and may ultimately involve significant legal expenses. We have incurred approximately $7.3$9.7 million of expenses related to this litigation since 2015 through December 31, 2017.2021. In addition to the foregoing, we have been and may be from time to timetime-to-time party to other legal proceedings that arise in the ordinary course of business and to other patent enforcement actions to assert our patent rights.

We believe that having distinctive names is an important factor in marketing our products, and therefore we use trademarks to brand some of our products, including Pyrogel, PyroThin, Cryogel and Spaceloft. As of December 31, 2017,2021, we had fiveseven trademark registrations in the United States, two trademark registrations with the World Intellectual Property Organization, and 4871 trademark registrations in foreign jurisdictions, including the European Union, Japan, China, Canada, South Korea and Brazil. Additionally, we had three pending US trademark applications and eleven pending foreign trademark applications. Although we have a foreign trademark registration program for selected marks, our approach may not be comprehensive enough orand we may not be able to register or use such marks in each foreign country in which we seek registration.

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Cross License Agreement with Cabot Corporation

In April 2006, we entered into a cross license agreement with Cabot Corporation, as amended in September 2007, in which each party granted certain intellectual property rights to the other party. The cross license agreement remains in effect until the expiration of the last to expire of the issued patents or patent applications and acquired patents licensed thereunder. We hold a non-exclusive, worldwide license to those patents and patent applications owned or licensed by Cabot that are necessary for us to (i) practice our manufacturing technology within a field of use, which is defined in accordance with the specific chemistry of our aerogel products and the supercritical fluid technology that we use in our manufacturing technology and (ii) use and sell the resulting aerogel blanket and derivative products. We paid Cabot $38 million over a period of approximately seven years, with the last payment made in March 2013, in connection with this license agreement. We have granted to Cabot a reciprocal, non-exclusive, worldwide license to certain patents and patent applications that we own that are necessary for Cabot to practice its processes within a field of use defined in accordance with the specific chemistry in its aerogel products and the drying technology that it uses to manufacture its products. The grant of license to each party covers issued patents, patent applications and patents issued from such counterpart applications, as well as patents licensed or acquired during a specified period, in each case that claim aerogels, or methods, materials of manufacture, or uses of aerogels.

Our Company

We are a corporation organized under the laws of Delaware. In June 2008, we completed a reorganization pursuant to which our predecessor company merged with and into a newly formed Delaware corporation, renamed Aspen Aerogels, Inc. We own three wholly owned subsidiaries: Aspen Aerogels Rhode Island, LLC, Aspen Aerogels Germany, GmbH and Aspen Aerogels Georgia, LLC, which was formed in August 2016.LLC. We maintain our corporate offices in Northborough, Massachusetts.

On June 18, 2014, we completed our initial public offering, or IPO, of 7,500,000 shares of our common stock at a public offering price of $11.00 per share. On February 18, 2020, we completed an underwritten public offering of 1,955,000 shares of our common stock at a public offering price of $8.25 per share. We received net proceeds of $14.8 million after deducting underwriting discounts and commissions of $1.1 million and offering expenses of approximately $0.3 million. On November 5, 2020, we entered into a sales agreement for an at-the-market (ATM) offering program under which we could sell up to $33,871,250 of our common stock through B. Riley Securities as our sales agent. We were not obligated to sell any stock under the sales agreement. We agreed to pay B. Riley Securities a commission of 3.0% of the gross sales proceeds of shares sold under the agreement. During 2020, we sold 714,357 shares of our common stock through the ATM offering program and received net proceeds of $9.5 million. During the year ended December 31, 2021, we sold an additional 929,981 shares of our common stock through the ATM offering program and received net proceeds of $19.4 million. On June 29, 2021, we sold 3,462,124 shares to an affiliate of Koch Strategic Platforms, LLC, or Koch, in a private placement of our common stock and received net proceeds of $73.5 million after deducting fees and offering expenses of $1.5 million. On February 18, 2022, we sold and issued a convertible note to an affiliate of Koch of $100.0 million in aggregate principal amount. Additionally, on February 15, 2022, we entered into a securities purchase agreement with an affiliate of Koch to sell 1,791,986 shares of our common stock for aggregate gross proceeds of $50.0 million, or the 2022 Offering. The closing of the 2022 Offering is subject to customary closing conditions, including the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976.

As of February 27, 2018,25, 2022, we had 23,643,18933,234,316 shares of our common stock outstanding.

We are required to file annual, quarterly and current reports, proxy statements and other information required by the Securities Exchange Act of 1934, as amended, or the Exchange Act, with the Securities and Exchange Commission, or the SEC. You may read and copy the reports and other information we file with the SEC filings are available at the SEC’s Public Reference Roomwebsite at 100 F Street, N.E., Room 1580, Washington, D.C. 20549. You may also obtain copies of this information by mail from the public reference section of the SEC, 100 F Street, N.E., Washington, D.C. 20549, at prescribed rates. You may obtain information regarding the operation of the public reference room by calling 1-800-SEC-0330. The SEC also maintains a website that contains reports, proxy statements and other information about issuers, like us, who file electronically with the SEC. The address of that website is http:https://www.sec.gov.

We maintain a public website at http:https://www.aerogel.com and use our website as a means of disclosing material non-public information and for complying with our disclosure obligations under Regulation FD. Our website includes an Investors section through which we make available, free of charge, our Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q, Current Reports on Form 8-K, Proxy Statements and Forms 3, 4 and 5 filed on behalf of directors and executive officers, as well as any amendments to those reports filed or furnished pursuant to the Exchange Act as soon as reasonably practicable after we electronically file such material with, or furnish it to, the SEC. The members of our Board of Directors and the designated chairs of the committees of the Board of Directors are reflected on the signature page of this annual report on Form 10-K. We also make available on our website the charters for our Board of Directors’ Audit Committee, Compensation and Leadership Development Committee and Nominating and Corporate Governance Committee, as well as our Code of Business Conduct and Ethics, our Corporate Governance Guidelines and other related materials. The information on our website is not part of this annual report.

Our Investor Relations Department can be contacted at Aspen Aerogels, Inc., 30 Forbes Road, Building B, Northborough,26 Forest Street, Suite 200, Marlborough, MA 01532,01752, Attention: Investor Relations; telephone: 508-691-1111; e-mail: ir@aerogel.com.

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Human Capital Resources

As of December 31, 2017,2021, we had 263418 full-time employees and one part-time employee, with 2957 in research and development, 172257 in manufacturing operations and supply chain, 3863 in sales and marketing and 2441 in general and administrative functions. Of our employees, 251397 are located in the United States and twelve21 are located abroad. We consider our current relationship with our employees to be of good standing. None of our employees are represented by labor unions or have collective bargaining agreements.

Compensation and Benefits

We believe that our future success largely depends upon our continued ability to attract and retain highly skilled employees. Technology companies both large and small compete for a limited number of qualified applicants to fill specialized positions. To attract qualified applicants, we offer a total rewards package consisting of base salary and target bonus, a comprehensive benefit package and equity compensation for every employee. Bonus opportunity and equity compensation increase as a percentage of total compensation based on level of responsibility. Actual bonus payout is based on performance.

Diversity and Inclusion

Much of our success is rooted in the diversity of our teams and our commitment to inclusion. We value diversity at all levels. We believe that our business benefits from the different perspectives a diverse workforce brings, and we pride ourselves on having a strong, inclusive and positive culture based on our shared mission and values.

Protection and Support of Our Employees during the COVID-19 Pandemic

In response to the COVID-19 pandemic, we have implemented and are following safe practices recommended by public health authorities and other government entities. We continue to focus on the safety and health of our employees. In addition, we have implemented various precautionary measures, including remote work arrangements, restricted business travel and procedures for social distancing, face coverings and safe hygiene. We continue to monitor public health guidance as it evolves and plan to adapt our practices as appropriate. Refer to the section below entitled “Item 1A. Risk Factors” for more information concerning risks to our business associated with COVID-19.

Seasonality

Our industry andenergy infrastructure product offering makesofferings make us less susceptible to seasonal patterns as our operating results are generated in part by demand for insulation associated with new-build construction of facilities, capital expansions and related capital projects, and larger maintenance-related projects in the energy infrastructure market. Historically, our secondthird and fourth quarter results have shown increased levels of revenue, which we believe is associated with our end-useend-user customers’ maintenance schedules and timing of capital projects. As we pursue and grow revenue opportunities in the electric vehicle market, we expect that a portion of our revenues may be subject to seasonal patterns typical of automotive suppliers.

Environmental Matters

We are subject to federal, state, local and foreign laws and regulations designed to protect the environment and to regulate the discharge of materials into the environment. We believe that our policies, practices, and procedures are properly designed to prevent unreasonable risk of environmental damage and associated financial liability. To date, environmental control regulations have not had a significant adverse effect on our overall operations. See “Risk Factors — We may incur significant costs complying with environmental, health and safety laws and related claims, and failure to comply with these laws and regulations could expose us to significant liabilities, which could adversely affect our results of operations.”

Summary of Risk Factors

Our business is subject to numerous risks and uncertainties, including those highlighted in this section below, that represent challenges that we face in connection with the successful implementation of our strategy. The occurrence of one or more of the events or circumstances described in more detail in the risk factors below, alone or in combination with other events or circumstances, may have an adverse effect on our business, cash flows, financial condition and results of operations. Such risks include, but are not limited to:

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Risks Related to Our Business and Strategy

We have incurred annual net losses since our inception, and we may continue to incur net losses in the future and may never reach profitability.

We have a history of losses, and we may not ever achieve full year profitability. We experienced net losses of $19.3$37.1 million, $12.0$21.8 million and $6.4$14.6 million for the years ended December 31, 2017, 20162021, 2020 and 2015,2019, respectively. As of December 31, 2017,2021, our accumulated deficit was $437.1$545.1 million. We expect to continue to incur operating losses as a result of expenses associated with the continued development and expansion of our business. Our expenses include research and development, sales and marketing, and general and administrative costs. Furthermore, these expenses are not the only factors that may contribute to our net losses. For example, interest expense that we incur on any future financing arrangements that we incur could contribute to our net losses. Any failure to increase revenue or manage our cost structure as we implement initiatives to grow our business could prevent us from achieving profitability, or sustaining profitability if we do achieve it. In addition, our ability to achieve profitability is subject to a number of

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risks and uncertainties discussed below, many of which are beyond our control. Failure to become and remain profitable may adversely affect the market price of our common stock and our ability to raise capital and continue operations.

We will require significant additional capital to pursue our growth strategy, but we may not be able to obtain additional financing on acceptable terms or at all.

The growth of our business will depend on substantial amounts of additional capital for expansion of existing production lines or construction of new production lines or facilities, for ongoing operating expenses, for continued development of our aerogel technology platform, or for introduction of new product lines. Our capital requirements will depend on many factors, including the rate of our revenue growth, our introduction of new products and technologies, our enhancements to existing products and technologies, and our expansion of sales and marketing and product development activities. In addition, we anticipate significant cash outlays during 2022 and 2023 related to maintaining our aerogel manufacturing operations in our East Providence, Rhode Island facility, the planned construction of our second aerogel plant in Bulloch County, Georgia and the construction of an automated fabrication operation in Mexico, among other items. We are planning to raise capital through debt financings, equity financings, partner financings, or technology licensing agreements to fund these operating and capital expenditure requirements in 2022, 2023 and beyond. Any such future significant expansion of our aerogel capacity, fabrication capacity or similar investment will require us to raise substantial amounts of additional capital. There is no assurance that we will be able obtain any such type of financing on terms acceptable to us or at all and in a timely manner.

In addition, we may consider strategic acquisitions of complementary businesses or technologies to grow our business, which would require significant capital and could increase our capital requirements related to future operation of the acquired business or technology.

We may not be able to obtain loans or raise additional capital on acceptable terms or at all. Our revolving credit facility with Silicon Valley Bank, or SVB, and the convertible note issued to an affiliate of Koch, which together with Koch, we refer to as KSP, contain restrictions on our ability to incur additional indebtedness, which, if not waived, could prevent us from obtaining needed capital. Our revolving credit facility with SVB is scheduled to mature on April 28, 2022, and our convertible note issued to KSP is scheduled to mature on February 18, 2027, unless earlier converted or redeemed. Any future credit facilities or debt instruments would likely contain similar or additional restrictions, requirements or conditions. We may not be able to obtain bank credit arrangements or effect an equity or debt financing on terms acceptable to us or at all in order to fund our future capacity expansion plans. Any failure to obtain additional financing when needed could adversely affect our ability to maintain and grow our business.

Our efforts in developing, selling, and supplying products in the electric vehicle market may subject us to increased financial, operational, and legal risks that could materially adversely impact our business, financial conditions, and results of operations and may also increase our costs and make it difficult for us to operate profitably.

We have a focus on developing and selling products in the automotive industry, specifically for electric vehicle applications. In 2020 and 2021, we entered into contracts with a U.S. automotive OEM to supply our thermal barrier products for use in the battery system of its electric vehicles. We are currently selling thermal barrier production parts to the U.S. automotive OEM, an Asian automotive OEM, and prototype thermal barrier parts to a number of other companies. We are also continuing our efforts to develop additional thermal barrier products for sale to others in the electric vehicle market. As a result of our existing contract with the U.S. automotive OEM, current sales to others in the electric vehicle market and any future supply of our products to the automotive industry, including through specific contracts, we are subject to a number of risks, including, but not limited to:

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Our ability to successfully sell our products to the automotive industry will depend in large part on our ability to manage these and other risks.

Our estimates regarding market opportunity for our products in the electric vehicle market and the assumptions on which our financial targets and our planned production capacity increases are based may prove to be inaccurate, which may cause our actual results to materially differ from such targets, which may adversely affect our future profitability, cash flows, and stock price. 

Our estimates regarding market opportunity for our products in the electric vehicle market, the assumptions underlying our estimates regarding market opportunity and our financial targets, including any revenue targets we may provide from time to time, are dependent on certain estimates and assumptions related to, among other things, category growth, development and launch of innovative new products, market share projections, product pricing and sale, volume and product mix, volatility, material prices, distribution, cost savings, and our ability to generate sufficient cash flow to reinvest in our existing business. The estimates and financial targets and our planned production capacity increases are based on estimates that our management believes are reasonable with respect to our future results of operations, based on present circumstances, and have not been reviewed by our independent accountants. Some assumptions upon which the estimates and financial targets are based, however, invariably will not materialize due to the inevitable occurrence of unanticipated events and circumstances beyond our management’s control or the occurrence of events that were believed to be less likely to occur. Our estimates regarding market opportunity and our financial targets are based on historical experience and on various other estimates and assumptions that we believe to be reasonable under the circumstances and at the time they are made, and our actual results may differ materially from our expectations. Any material variation between our estimates and financial targets and our actual results may adversely affect our future profitability, cash flows and stock price.

We have yet to achieve positive total cash flow, and our ability to generate positive cash flow is uncertain.

To develop and expand our business, we have made, and will need to continue to make, significant up-front investments in our manufacturing capacity and have incurred research and development, sales and marketing and general and administrative expenses. In addition, our growth has required a significant investment in working capital. We experienced negative cash flows from operating activities of $4.6$18.6 million, $9.9 million and $0.6$1.1 million for the yearyears ended December 31, 20172021, 2020 and 2016, respectively, and positive cash flows from operating activities of $5.4 million for the year ended December 31, 2015.2019, respectively. The negative cumulative cash flows from operating activities during the three yearthree-year period were insufficient to offsetexacerbated by cash flows used in investing activities principally to maintain, enhance and expand our manufacturing capacityoperations during the same time period. As a result, we experienced negative total cash flows during the three yearthree-year period.

We expect that for the foreseeable future our totaloperating cash flow will remain negative.be negative on an annual basis during 2022. In particular,addition, we anticipate that we will needincur significant cash outlays related to fundmaintaining our significant planned future capital expenditures to expandaerogel manufacturing capacityoperations in our East Providence, Rhode Island manufacturing facility, and with the planned construction of our second manufacturing plant.new plant in Bulloch County, Georgia, and the planned construction of an automated fabrication operation

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in Mexico. We will also require significant amounts ofare planning to raise capital through debt financings, equity financings, partner financings, or technology licensing agreements to fund these operating and capital expenditure requirements in 2022, 2023, and beyond. However, we expect that our existing cash balance or cash balance after any such financing, alone, may periodically be insufficient to fund these operating, capital expenditure or working capital requirements. During such periods, we may be dependent on our line of credit with SVB, under which we have the ability to supportborrow up to $20.0 million, to fund the balance of the required investment in working capital. The credit agreement requires us to comply with both non-financial and financial covenants, which have included minimum Adjusted EBITDA and minimum Adjusted Quick Ratio covenants, as defined in the credit agreement. In December 2020, we obtained a waiver from SVB related to our growthpotential non-compliance with these financial covenants. This waiver was subject to certain conditions, and there can be no assurance that in the future SVB will waive such potential or actual covenant non-compliances, if requested, or waive them with reasonable and achievable conditions, or that we will comply with any such covenants, waivers or conditions. As a result, we could end up in default under the agreement or otherwise be unable to continue to borrow under our line of credit, subject to acceleration of the payment of any balance and further subject to the remedies typically available to a lender. See “Our revolving credit facility contains financial and operating restrictions that may limit our access to credit. In addition, our revolving credit facility expires on April 28, 2022 and we will needmay not be able to increaserenew, extend or replace the expiring facility. If we fail to comply with covenants in our inventories of raw materials andrevolving credit facility or if such facility is terminated, we may be required to repay our products as we seek to growindebtedness thereunder, which may have an adverse effect on our business. liquidity.”

In addition, to the extent we incur long-term debt, we may have debt maturities from time to time that will require cash in order to repay those obligations. We may not achieve sufficient revenue growth to generate positive future cash flow and, therefore,

in 2023 or any future year. As a result, we may need to raise additional capital from investors to achieve our expected growth. Angrowth or to fund the working capital investment necessary to maintain operations. Any inability to generate positive future cash flow, for the foreseeable futureto borrow funds or to raise additional capital on reasonable terms, if at all, may decreaseharm our short-term financial condition or threaten our long-term viability.

Our working capital requirements involve estimates based on demand and production expectations and may decrease or increase beyond those currently anticipated, which could materially harm our results of operations and financial condition.

In order to fulfill the product delivery requirements of our direct and end-user customers, we plan for working capital needs in advance of customer orders. In particular, our OEM customers estimate and place their orders significantly in advance of the time they are needed, requiring us to plan our working capital needs well in advance of delivering their orders. As a result, we base our funding and inventory decisions on estimates of future demand. If demand for our products does not increase as quickly as we have estimated or drops off sharply, our inventory and expenses could rise, and our business and results of operations could suffer. Alternatively, if we experience sales in excess of our estimates, which has occurred in previous reporting periods, our working capital needs may be higher than currently anticipated. Additionally, in the early years of electric vehicle adoption, our electric vehicle customers’ forecasts may be prone to multiple and frequent revisions resulting in changing demand levels. Our ability to meet this excess or changing customer demand depends on our ability to arrange for additional financing for any ongoing working capital shortages, since it is likely that cash flow from sales will lag behind these investment requirements. In the past, we have principally relied on our line of credit with SVB to supplement these financing needs. The revolving credit agreement requires us to comply with both non-financial and financial covenants. In the future, there can be no assurance that we will continue to comply with such covenants and that SVB will waive any non-compliance, if requested. As a result, we could end up in default under the agreement or otherwise be unable to continue to borrow under our line of credit. Any failure to borrow under our line of credit or inadequate access to working capital when needed could adversely affect our ability to invest in the working capital required to maintain and grow our business.

Our revolving credit facility with SVB and our convertible note arrangement with KSP contain financial and/or operating restrictions that may limit our access to credit. In addition, our revolving credit facility with SVB expires on April 28, 2022 and we may not be able to renew, extend or replace the expiring facility. If we fail to comply with covenants in our revolving credit facility or if facility is terminated, we may be required to repay our indebtedness thereunder, which may have an adverse effect on our liquidity.

Provisions governing our revolving credit facility with SVB impose restrictions on our ability to operate, including, for some of the agreements and instruments, but not for others, our ability to:

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Furthermore, our convertible note arrangement with KSP contains certain restrictions on our ability to operate, including our ability to incur indebtedness. Our revolving credit facility also contains other financial and non-financial covenants. Historically, when we were not in a position to meet the financial covenants, SVB has agreed to modify or otherwise waive the requirements. We may not be able to comply with these covenants in the future and SVB may not accommodate modifications or waivers. Our failure to comply with these covenants may result in the declaration of an event of default and could cause us to be unable to borrow funds under our revolving credit facility. In addition to preventing additional borrowings under our revolving credit facility with SVB or convertible note arrangement with KSP, an event of default, if not cured or waived, may result in the acceleration of the maturity of indebtedness outstanding under the revolving credit facility and the convertible note arrangement with KSP, which would require us to pay all amounts outstanding. Such an event may also lead our secured lender to exercise its security interest in our assets, including all of our real property and equipment at our East Providence facility. If an event of default occurs, we may not be able to cure it within any applicable cure period, if at all. If the maturity of our indebtedness is accelerated, we may not have sufficient funds available for repayment or we may not have the ability to borrow or obtain sufficient funds to replace the accelerated indebtedness on terms acceptable to us, or at all.

Shortages of the raw materials used in the production of our products, increases in the cost of such materials or disruptions in our supply chain could have a material adverse impact on our financial condition and results of operations.

The raw materials used in the production of our products consist primarily of fiber battings, silica precursors and other additives. In addition, the production process requires the use of process gases and other materials typical to the chemical processing industry, as well as access to electricity, natural gas, water, and other basic utilities. Although we are not dependent on a single supplier, we are dependent on the ability of our third-party suppliers to supply such materials on a timely and consistent basis. While these materials and utilities are available from numerous sources, they may be, and have been in the past, subject to fluctuations in availability and price. For example, during the year ended December 31, 2018 and again during the year ended December 31, 2021, we experienced significant increases in the costs of certain silica precursor materials, which constituted over 50% of our raw material costs.

In addition, our third-party suppliers may not dedicate sufficient resources to meet our scheduled delivery requirements or our suppliers may not have sufficient resources to satisfy our requirements during any period of sustained or growing demand. Failure of suppliers to supply, delays in supplying or disruptions in the supply chain for our raw materials, or adverse allocations in the supply of certain high demand raw materials could materially adversely affect the results of our operations. Supply disruptions may affect our ability to meet contractual commitments or delivery schedules on a timely basis and could materially negatively impact our results of operations. For example, during 2015 and again during 2021, pursuant to force majeure notifications, our primary carbon dioxide gas suppliers temporarily curtailed supply of carbon dioxide to us due to a feedstock issue impacting the northeastern United States. During this period, the supply disruption required that (i) we make special arrangements to procure carbon dioxide from alternative suppliers outside the region often at higher costs and incur additional transportation expenses, and (ii) we intermittently idle a portion of our manufacturing equipment thereby reducing our production volume and adversely impacting our results of operation.

While we have recently entered into a three-year contract to secure exclusive supply of certain silanes from Silbond Corporation, most of our raw materials are procured through individual purchase orders or short-term contracts and not through long-term contracts that ensure a fixed price or guaranteed supply for an extended period. This procurement strategy may not support sustained long-term supply chain stability. Fluctuations in the prices of these raw materials could have a material adverse effect on our results of operations. Our suppliers also seek alternative uses for our raw materials at higher price points. Such competitive uses for our raw materials create material price and availability risks to our business. In addition, our ability to pass increases in raw material prices on to our customers is limited due to competitive pricing pressure and the time lag between the increase in costs and the implementation of related price increases.

In particular, we purchase a variety of silica precursors from several suppliers, mostly pursuant to individual purchase orders or short-term contracts and not pursuant to long-term contracts. We do not have a secure, long-term supply of all of our silica precursors. We may not be able to establish arrangements for secure, long-term silica precursor supplies at prices consistent with our current costs or may incur a delay in supply while we seek alternative sources. From time-to-time, we experienced a significant increase in the price of certain silica precursors due to a supply imbalance or other factors in the silanes market. While we seek to reformulate our products to reduce our reliance on materials that are susceptible to significant price fluctuations, while maintaining appropriate performance characteristics, our efforts may not be successful. Any inability to continue to purchase silica precursors without long-term agreements in place, or to establish a long-term supply of silica precursors at prices consistent with our current cost estimates, would have a material adverse effect on our ability to increase our sales and achieve profitability.

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We are also projecting significant revenue growth associated with an anticipated demand for PyroThin thermal barriers in the electric vehicle market. To keep pace with this anticipated growth, we are planning to expand our manufacturing capacity by constructing a second aerogel plant in Bulloch County, Georgia and an automated fabrication operation in Mexico. We are also planning to expand the supply of raw materials available to us by securing commitments to expand supply from existing raw material suppliers, by identifying and qualifying additional suppliers of critical raw materials, and by potentially investing in the assets and hiring the personnel required to produce certain critical raw materials directly in our second aerogel plant. However, our efforts to expand the supply of raw materials may not be successful or could lead to significant increase in our raw material costs. Any such failure or increase in raw material costs would have a material adverse effect on our ability to increase our sales or to achieve profitability.

In light of the increased demand for many of our raw materials, we have recently expanded our supplier base beyond North America, to Europe and Asia, and specifically to China. We do not have considerable experience managing issues arising out of this globalized supply chain and these risks are significantly magnified during current global supply chain disturbances. If such disturbances persist and manifest in different forms, they present additional substantial operational difficulties that would have a material adverse effect on our ability to meet our customer demands or fulfil our contractual obligations to our customers.

Additionally, our suppliers may prioritize their resources for any long-term commitments to third parties and to our detriment. We may not be in a position to find alternate suppliers in a timely manner to continue to operate consistent with our obligations to or expectations of our customers. The supply chain for our materials has been increasingly global in nature. Global events such as trade wars between nations, armed conflicts, or the coronavirus outbreak could have both short-term and long-term effects on our supply chain.

The cyclical nature of automotive sales and production can adversely affect our business. Furthermore, disruptions in the components that our customers in the EV market, including our automotive OEM customers, use in their products may adversely affect our business operations and projected revenue.

Our thermal barrier business, which is projected to grow significantly in the coming years, is directly related to sales and vehicle production by our automotive OEMs. A reduction in automotive sales and production could cause our automotive OEM customers to reduce their orders of our products. Automotive sales and production are highly cyclical and are dependent on general economic conditions, customer confidence, and consumer preferences. Lower global automotive sales would be expected to result in our automotive OEM customers having reduced vehicle production schedules, which has a direct impact on our revenues generated from this portion of our business. Automotive sales and production can also be affected by labor relation issues, regulatory requirements, trade agreements, the availability of consumer financing and supply chain disruptions. Our customers in the EV market, particularly our automotive OEM customers, use a broad range of materials and supplies and are reliant on a global supply chain. A significant disruption in the global supply chain may cause them to halt or delay production, which in turn would reduce their requirements of our aerogel thermal barrier or delay their orders. We have no control over these disruptions in supply chain and the resulting delay or reduction in our customers’ orders. Any such delay or reduction would adversely impact our targets of awarded business for our thermal barriers and other products. Our sales are also affected by inventory levels and OEMs’ production levels. We cannot predict when OEMs will decide to increase or decrease inventory levels or whether new inventory levels will approximate historical inventory levels. Uncertainty and other unexpected fluctuations could have a material adverse effect on our business and financial condition.

Trends in the selection of cell chemistries, battery pack system architectures, and the adoption of active cooling methods may reduce thermal complexities to render the demand for our thermal barrier products less obvious.

Energy density requirements for electric vehicle batteries have been consistently increasing, the resulting choice of cell chemistries and pack architectures have typically presented more demanding thermal problems that our thermal barrier products are designed to address. However, due to the safety issues, we believe that some vehicle manufacturers tend to select less thermally demanding and inherently safer cell chemistries and design choices at the expense of lower energy densities and lower driving range. Such systems may not present a demanding thermal problem requiring solutions like our thermal barrier products. If the electric vehicle landscape evolves in such direction, the demand for our products will not materialize or not meet our current forecasts, plans and expectations, which will have a material adverse effect on our business and operations.

Our business, results of operations and financial condition could be materially adversely affected by the effects of widespread public health epidemics, including coronavirus and the resulting COVID-19 pandemic, that are beyond our control.

Any outbreaks of contagious diseases, public health epidemics, and other adverse public health developments in countries where we, our customers, and suppliers operate could have a material and adverse effect on our business, results of operations, and financial condition. The novel strain of the coronavirus affecting the global community, including the United States, is expected to continue to impact our operations, and the nature and extent of the impact may be highly uncertain and beyond our control. In particular, our sales

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globally, including to customers in the energy infrastructure and sustainable building materials markets that are impacted by the COVID-19 pandemic, are being negatively impacted as a result of disruption in demand, which could have a material adverse effect on our business, results of operations and financial condition. The COVID-19 pandemic has resulted in significant volatility in the price of oil and has reduced the demand for our products used in energy infrastructure facilities. We have also faced market-based challenges in the hiring and retention of non-exempt labor in our East Providence, Rhode Island manufacturing facility during 2021 that has limited our manufacturing output and has delayed the fulfillment of customer orders. In addition, suppliers of our raw materials have intermittently been unable to supply the materials that we require to manufacture our products according to our schedules. This COVID-19 related revenue shortfall and the employee and raw material shortages constrained manufacturing output, reduced our ability to fulfill orders, reduced our revenue and contributed to an increase in our net loss in 2021. We estimate that our production output was depressed by between $6.0 to $8.0 million during the fourth quarter of 2021 due to COVID-related staffing issues and raw material shortages. The future impact of similar COVID-19 related disruptions to our business cannot be accurately estimated at this time. The COVID-19 pandemic may also impact automotive sales and production by our automotive OEM customers, which in turn affects our ability to realize the awarded business and our business operations.

Uncertain factors relating to the COVID-19 pandemic include the duration of the outbreak, the severity of the disease, the effect of various mutated variants of the virus in circulation, the availability of vaccines, the rate of vaccination in the various geographies, and the actions, or perception of actions that may be taken, to contain or treat its impact, including declarations of states of emergency, business closures, manufacturing restrictions and a prolonged period of travel, commercial and/or other similar restrictions and limitations. While the potential economic impact of the coronavirus outbreak may be difficult to assess or predict, a widespread pandemic could result in significant or sustained disruption of global financial markets, reducing our ability to access capital, which could in the future negatively affect our liquidity. In addition, while we believe we have taken appropriate steps to maintain a safe workplace to protect our employees from contracting and spreading the coronavirus, including following the guidance set out from both the Occupational Safety and Health Administration and Centers for Disease Control and Prevention, we may not be able to prevent the spread of the virus among our employees, face litigation or other proceedings making claims related to unsafe working conditions, inadequate protection of our employees or other claims. Any of these claims, even if without merit, could result in costly litigation or divert management’s attention and resources. Furthermore, we may face a sustained disruption to our operations due to one or more of the factors described above.

We may not realize sales represented by awarded business.

We estimate awarded business for our thermal barrier business using certain assumptions, including projected future sales volumes. Our customers in the EV market generally do not guarantee volumes. In addition, awarded business typically includes business under arrangements that our customers in the EV market have the right to terminate without penalty. Therefore, our actual sales volumes, and thus the ultimate amount of revenue that we derive from such sales, are not committed. If actual production orders from our EV market customers are not consistent with the projections we use in calculating the amount of our awarded business, we could realize substantially less revenue over the life of these projects than the currently projected estimate estimates and our financial targets developed based on such estimates.

Continued pricing pressures, automotive OEM cost reduction initiatives and the ability of automotive OEMs to re-source or cancel vehicle programs may result in lower than anticipated margins, or losses, which may have a significant negative impact on our business.

Cost-cutting initiatives adopted by our customers in the EV market or our automotive OEM customers result in increased downward pressure on pricing. In addition, our customers in the EV market often reserve the right to terminate their supply contracts for convenience, which enhances their ability to obtain price reductions. Automotive OEMs also possess significant leverage over their suppliers, including us, because the automotive technology and component supply industry is highly competitive, serves a limited number of customers, has a high fixed cost base and historically has had excess capacity. Based on these factors, and the fact that our automotive OEM customers’ product programs are anticipated to encompass large volumes, our customers are able to negotiate favorable pricing. Accordingly, we are subject to substantial continuing pressure from automotive OEMs to reduce the price of our products. It is possible that pricing pressures beyond our expectations could intensify as automotive OEMs pursue restructuring and cost-cutting initiatives. If we are unable to generate sufficient production cost savings in the future to offset price reductions, our gross margin and profitability would be adversely affected.

Our supply agreements with our automotive OEM customers are generally requirements contracts, and a decline in the production requirements of any of our customers, could adversely impact our revenues and profitability.

We receive automotive OEM purchase orders for specific components supplied for particular vehicles. Typically, our automotive OEM customers agree to purchase their requirements for specific products but are not required to purchase any minimum

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quantity of products from us. Therefore, a significant decrease in demand for certain key models or group of related models sold by any of our automotive OEM customers or the ability of a manufacturer to re-source and discontinue purchasing from us, for a particular model or group of models, could have a material adverse effect on us and reduce the value of the awarded business. To the extent that we do not maintain our existing business with our automotive OEM customers because of a decline in their production requirements or because the contracts expire or are terminated for convenience, we will need to attract new customers or win new business with existing customers, or our results of operations and financial condition as well as the value of the awarded business will be adversely affected.

We are currently dependent on a single manufacturing facility. Any significant disruption to this facility or the failure of any one of our three production lines in this facility to operate according to our expectation could have a material adverse effect on our business and results of operations.

WeWhile we are planning to build a second manufacturing facility in Bulloch County, Georgia, we currently have only three production lines in a single manufacturing facility located in East Providence, Rhode Island. Our ability to meet the demands of our customers depends on efficient, proper and uninterrupted operations at this manufacturing facility. In the event of a significant disruption to our sole manufacturing facility or breakdown of any of the production lines, we currently do not expect that we would have sufficient inventory in stock to meet demand until the production lines return to operation.

Power failures or disruptions, the breakdown, failure, or substandard performance of equipment, or the damage or destruction of buildings and other facilities due to fire or natural disasters could severely affect our ability to continue our operations. In the event of such disruptions, we are unlikely to find suitable alternatives or may not be able to make needed repairs on a timely basis and at reasonable cost, which could have a material adverse effect on our business and results of operations. In particular, our manufacturing processes include the use of high pressures, high temperatures, and flammable chemicals, which subjectssubject us to a significant risk of loss resulting from fire, spill, or related event. We had occasional incidences of fires at our initial facility in Northborough, Massachusetts that preceded our current manufacturing facility in East Providence, Rhode Island.

If our manufacturing facility or any equipment therein were to be damaged or cease operations, it may reduce revenue, cause us to lose customers, and otherwise adversely affect our business. The insurance policies we maintain to cover losses caused by fire or natural disaster, including business interruption insurance, may not adequately compensate us for any such losses and will not address a loss of customers that we expect would result.result or may have large deductibles insufficient to support our continuing operations. If our existing manufacturing facility was damaged or destroyed, we would be unable to operate our business for an extended period of time and our business and results of operations may be materially adversely affected, potentially even threatening our viability.

If the expected growth in the demand for our products does not follow after each of our planned capacity expansions, then our business will be materially adversely affected.

Our long-term growth plan requires that we continue to increase our production capacity. As we pursue our capacity expansion plans, we will incur significant capital expenditures and increased levels of manufacturing expenses in anticipation of expected growth in demand for our products. In particular, we expect that these substantial additional expenditures will be made by us significantly in advance of the existence of the level of demand that would ensure the most efficient use of our planned new capacity. As a result, if the expected growth in demand for our products fails to materialize within a reasonable amount of time following each of our planned capacity expansions, whether because of low oil and gas prices, the loss of a significant customer, the failure to develop new markets or for any other reason, then we would suffer decreased levels of cash flow and our financial condition and results of operations would be adversely affected.

If we fail to achieve thesuccessfully construct and operate our planned second manufacturing facility in Bulloch County, Georgia and increase inour production capacity that our long-termcontinued and anticipated growth requires in a timely manner, or at all, our growth may be hindered and our business or results of operations may be materially adversely affected.

We have projected significant increase in the demand for our aerogel products, driven by our expected growth in the EV market and sales to our automotive OEM customers. Our continued growth requires that we increase our production capacity. Consequently, we are planning to construct a second manufacturing plant in Bulloch County, Georgia. We are planning to invest nearly $700.0 million in two phases in the construction of the second facility and we expect to have the first phase of the second plant operational during the second -half of 2023. If, for any reason, including our inability to obtain financing, our planned expansion of capacity in our existing East Providence, Rhode Island facility or in our plannedthe second manufacturing facility to be constructed in Statesboro, Georgiaplant should fail to be completed in a timely manner, or at all, or any of the production lines in our existing or futurethe second manufacturing facilitiesplant do not operate according to our expectations, sales and or profitability may be impeded, our growth may be hindered and our business or results of operations may be materially adversely affected.

Many factors could delay impede or prevent the expansion of our existing manufacturing facility or construction and operation of a second manufacturing facility or cause us to reduce the scale or scope of the expansion projects,new facilities, including:

Many factors could prevent our existing and futurethe second manufacturing facilitiesfacility from producing at their expected projectedeffective or targeted nameplate capacitiescapacity or could cause us to reduce the scale or scope of future capacity expansions orthe new facilities, including:

Any such capacity expansion will place a significant strain on our senior management team and our financial and other resources. The costs associated with and the resources necessary for our capacity expansion plans could exceed our expectations and result in a materially adverse impact on our business, results of operations, financial condition and cash flows.

If we are unable to complete the projects asproject contemplated, the costs incurred in connection with such projects may not be recoverable. For example, during 2013,

We may encounter manufacturing challenges in the EV market.

The volume and timing of sales to our customers in the EV market may vary due to a wide range of factors, including but not limited to, variation in demand for our customers’ products; our customers’ attempts to manage their inventory; design changes; changes in our customers’ manufacturing strategy; our customers’ production schedules; acquisitions of or consolidations among customers; and disruptions in the supply of raw materials or other supplies used in our customers’ products. Due in part to these factors, we redesignedbelieve that many of our automotive OEM customers and reducedcustomers in the planned scaleEV market do not commit to long-term production schedules. Our inability to forecast the level of customer orders with certainty makes it difficult to schedule production and maximize utilization of manufacturing capacity.

In order to meet the anticipated demand in the EV market, we are planning to construct a second manufacturing plant in Bulloch County, Georgia, to expand our aerogel capacity. Any delays or disruptions in constructing the second manufacturing plant would directly impact our ability to meet such customer demand and adversely impact our business operations and the value of the third production lineawarded business.

From time to time, we have underutilized our manufacturing lines. This excess capacity means we incur increased fixed costs in our East Providence, Rhode Island facility. We recorded an associated $3.4 million impairment charge during 2013 relatedproducts relative to the write-offnet revenue we generate, which could have an adverse effect on our results of construction in progress assets. Asoperations, particularly during economic downturns. If we are unable to improve utilization levels for these manufacturing lines and correctly manage capacity, the increased expense levels will have an adverse effect on our business, financial condition and results of December 31, 2017,operations. In addition, we have capitalized approximately $7.2 million relatedare planning to engineering designs and other pre-construction costs related to our planned second manufacturingconstruct a fabrication facility in Statesboro, Georgia. A redesignMexico. Facilities located in Mexico or other countries are subject to a number of changeadditional risks and uncertainties, including increasing labor costs, which may result from market demand or other factors, political, social and economic instability, difficulty in scaleenforcing agreements, or unexpected changes in laws, regulations or policy. Additionally, our manufacturing activities in Mexico may also be adversely affected by political events, terrorist events and hostilities, complications due to natural, nuclear or other disasters or the spread of an infectious disease, virus or failureother widespread illness. For instance, the global spread of COVID-19, which originated in late 2019 and was later declared a pandemic by the World Health Organization in March 2020, caused certain governmental authorities worldwide to complete the constructioninitiate “lock-down” orders for all non-essential activities, which at times, included extended shutdowns of second manufacturing facility and other similar impairments of our assetsbusinesses in the futureimpacted regions. This or any further political or governmental developments or health concerns in Mexico could result in social, economic and labor instability. These uncertainties could have a materiallymaterial adverse impacteffect on the continuity of our business and our results of operations and financial condition.

We willExisting free trade laws and regulations, such as the United States-Mexico-Canada Agreement, provide certain beneficial duties and tariffs for qualifying imports and exports, subject to compliance with the applicable classification and other requirements. Changes in laws or policies governing the terms of trade, and in particular increased trade restrictions, tariffs or taxes on imports from and exports to Mexico, where we intend to fabricate automotive parts from PyroThin products manufactured in the U.S., could have a material adverse effect on our business and financial results.

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From time to time we have had difficulty in consistently producing products that meet applicable product specifications and technical and delivery requirements, and such difficulties could expose us to financial, contractual, or other liabilities.

Our insulation products are technologically advanced and require a precise and complex manufacturing process. Because of the precision and complexity of this manufacturing process and the high-performance characteristics of our products, from time to time we have had difficulty in consistently producing products that meet applicable specifications and technical and delivery requirements, including, our customer and end-user specifications and requirements. At certain times in the past, the growth in demand for our products has contributed to this difficulty by putting significant additional capitalpressure on our management, our personnel and our production facilities. See “Risk Factors — Growth has placed significant demands on our management systems and our infrastructure. If we fail to pursuemanage our long-term growth strategy, buteffectively, we may be unable to execute our business plan, address competitive challenges and meet applicable product specifications and technical and delivery requirements.”

Furthermore, we seek to lower our manufacturing costs, while maintaining appropriate performance characteristics, and to improve the per square foot costs of our silica aerogel blankets by optimizing our formulations to reduce material costs. Any failure to meet the specifications for our products as a result of our attempts to optimize our formulations, or otherwise, or technical and delivery requirements could result in the termination of existing customer contracts or purchase orders, the elimination or reduction of future purchase orders, the impairment of customer relationships, and the incurrence of financial, contractual or other liabilities. Products that do not be ablemeet these specifications or requirements may also expose us to obtain additional financing on acceptable termswarranty and product liability claims and associated adverse publicity. Any such termination, reduction, impairment, liability or at all.

The growthpublicity could result in a broader loss of existing customers and revenues and delay the execution of our business will depend on substantial amounts of additional capital for expansion of existing production lines or construction of new production lines or facilities, for ongoing operating expenses, for continued development ofplans, disrupt our aerogel technology platform, or for introduction of new product lines. Our capital requirements will depend on many factors, including the rate of our revenue growth, our introduction of new products, our enhancements to existing products,operations and our expansion of sales and marketing and product development activities. In particular, our plans to expand our existing facility in East Providence, Rhode Island and to constructcould have a planned second manufacturing facility in Statesboro, Georgia are dependentmaterial adverse effect on our ability to raise debtresults of operations and potentially issue equity. There is no assurance that we will be able obtain any such type of financing on terms acceptable to us or at all.financial condition.

In addition, we may consider strategic acquisitions of complementary businesses or technologies to grow our business, which would require significant capital and could increase our capital requirements related to future operation of the acquired business or technology.

We may not be able to obtain loans or raise additional capital on acceptable terms or at all. Our loan and security agreement with Silicon Valley Bank, under which we have the ability to borrow up to $20.0 million, contains restrictions on our ability to incur additional indebtedness, which, if not waived, could prevent us from obtaining needed capital. In addition, our revolving credit facility with Silicon Valley Bank will mature on April 28, 2018. Any future credit facilities or debt instruments would likely contain similar restrictions. We may not be able to obtain bank credit arrangements or effect an equity or debt financing on terms acceptable to us or at all in order to fund our future capacity expansion plans. A failure to obtain additional financing when needed could adversely affect our ability to maintain and grow our business.

A sustained downturn in the energy industry, due to lower oil and gas prices or reduced energy demand, could decrease demand for some or all of our products and services, which could have a material adverse effect on our business, financial condition and results of operations.

Demand for a significant portion of our products and services depends on the level of capital expenditure by companies in the energy industry, which depends, in part, on current and expected energy prices. Prices of oil and gas have been highly volatile in the past several years with oil prices reaching a high above $100 per barrel in mid-2014 to a low below $30$12 per barrel in early 2016.2020, and recently climbing to over $90 per barrel. The volatility in oil prices and declines in oil prices, which are often associated with unrelated world events, such as the recent tensions between Russia and Ukraine and political instability in Ukraine and other areas in the world, have resulted, from time to time, in a reduction in capital expenditures by many companies in the energy industry, and in particular by end-users of our products involved in the construction and expansion of offshore and onshore oil and gas production facilities. Sustained lower energy prices may also reduce our energy infrastructure and building materials end-users’ need to improve energy savings by using premium-priced insulation products like ours, thus reducing demand for our products and causing downward pressure on the pricing of our products. A sustained downturn in the capital expenditures of our energy infrastructure and building materials customers, whether due to periods of lower energy prices or a further decrease in the market price of oil and gas or otherwise, and including the perception that such a downturn might occur or continue, may delay capital projects, decrease demand for our products and cause downward pressure on the prices we charge for our products, which, in turn, could have a material adverse effect on our business, financial condition and results of operations. Such downturns, including the perception that they might occur or continue, could have a significant negative impact on the market price of our common stock.

Regulation of greenhouse gas emissions could reduce demand for hydrocarbon products and lead to a sustained downturn in the energy industry, which could decrease demand for our products and have a material adverse effect on our business, financial condition and results of operation.

Due to growing concerns about the risks of climate change, a number of countries are adopting or considering adopting regulations to reduce greenhouse gas emissions. The current U.S. administration has announced a renewed focus on potential legislation and regulations to combat climate change. Any potential greenhouse gas regulations, while potentially helpful in the adoption of electric vehicles, could have the impact of increasing energy costs, reducing the demand for hydrocarbons, decreasing profitability and return on investment in the energy industry, and leading to a sustained downturn in the energy industry. Demand for a significant portion of our products depends on the aggregate level of capital expenditure in the energy industry, which depends, in part, on the expected return on such investments. A sustained period of diminished returns or expected returns on capital deployed in the energy industry as a result of greenhouse gas regulations or otherwise, may delay capital projects, decrease demand for our products and cause downward pressure on the prices we charge for our products, which, in turn, could have a material adverse effect on our business, financial condition, results of operations and the market price of our common stock.

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The markets we serve are subject to general economic conditions and cyclical demand, which could harm our business and lead to significant shifts in our results of operations from quarter to quarter that make it difficult to project long-term performance.

Our results of operations have been, and may in the future be, adversely affected by general economic conditions and the cyclical pattern of certain industries in which our customers and end-users operate. Demand for our products and services depends in large part upon the level of capital and maintenance expenditures by many of our customers and end-users, in particular those in the energy, petrochemical, and power generation industries, and firms that design, construct, and operate facilities for these industries.

These customers’ expenditures have historically have been cyclical in nature and vulnerable to economic downturns. In particular, profitability in the energy industry is highly sensitive to supply and demand cycles and commodity prices, which historically have been volatile; and our customers in this industry historically have tended to delay large capital projects, including expensive maintenance and upgrades, during industry downturns. Delays in customer projects may cause fluctuations in the timing or the amount of revenue earned and our results of operations in a particular period. Prolonged periods of little or no economic growth could decrease demand for oil and gas, which, in turn, could result in lower demand for our products and a negative impact on our results of operations and cash flows. This risk increases as we seek to increase the project-based revenue as a percentage of the total revenue. In addition, this historically cyclical demand and potential customer project delays may lead to significant shifts in our results of operations from quarter to quarter and from year to year, which limits our ability to make accurate long-term predictions about our future performance. We estimate that sales to end-useend-user customers in the energy industry accounted for approximately 95%90% of our 20172021 revenues and we expect that they will continue to account for a significant portion of our future revenues.

The market for insulation products incorporating aerogel blankets is relatively undeveloped and our products may never be widely adopted, which would have a material adverse effect on our business.

The market for insulation products utilizing aerogel blankets is relatively undeveloped. Accordingly, our future results of operations will depend in large part on our ability to gain market share of the global energy infrastructure and building materials insulation markets. Our ability to gain market share in these markets is highly dependent on the acceptance of our products by large, well-established end-users, distributors, contractors, and OEMs. The insulation market has historically been slow to adopt new technologies and products. Most insulation types currently in use in the energy infrastructure and building materials markets were developed over 50 years ago. In addition, there is a tendency of end-users in some of our markets to opt for the lower short-term costs associated with traditional insulation materials. If we fail to meet required project, investmenteducate existing and job requirement goals forpotential end-users, distributors, contractors, and OEMs of the second manufacturing facility in a timely fashion, the package of incentivesbenefits and value offered by governmental entities mayour aerogel products, or if existing users of our products no longer rely on aerogel insulation for their insulation needs, our ability to sell our products and grow our revenue could be terminated orlimited.

Our business strategy also includes the development of next generation products with the performance characteristics and price points required by markets outside of the energy infrastructure and sustainable building materials markets, including the electric vehicle market. These performance and price requirements can be more demanding than those we faced in energy infrastructure and sustainable building materials markets. In the event that we are unable to develop products that meet market needs, we may be requiredunable to repaypenetrate such markets. In addition, the valuedevelopment of incentives receivedinnovative product and manufacturing methods requires the dedication of significant human, technical and financial resources, with no certainty of success or recovery of our related investment. As a result, we may be unable to grow our business in markets outside of the energy infrastructure and sustainable building materials markets, which could adversely affect our financial performance.

Because we are often a new supplier offering new types of materials to our end-user customers, we also may face concerns from governmental entities,these end-user customers about our reliability and our ability to produce our products in a volume sufficient to meet their supply and quality control needs. As a result, we may experience a reluctance or unwillingness by existing end-user customers to expand their use of our products and by potential end-user customers to begin using our products. Our products may never reach mass adoption, and changes or advances in technologies could adversely affect the demand for our products.

A failure to increase, or a decrease in, demand for aerogel insulation products caused by lack of end-user, market or distribution channel acceptance, technological challenges or competing technologies and products would result in a lower revenue growth rate or decreased revenue, either of which could have a material adverse effect on our business and our results of operations.

If we do not respond appropriately, the evolution of the automotive industry towards mobility on demand services could adversely affect our business.

There has been an increase in consumer preferences for mobility on demand services, such as car- and ride-sharing, as opposed to automobile ownership, which may result in a long-term reduction in the number of vehicles per capita and in turn result in lower demand for our products in the EV market. These evolving areas have also attracted increased competition from entrants outside the

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traditional automotive industry. If we do not continue to respond quickly and effectively to this evolutionary process, our results of operations could be adversely impacted.

Declines in the market share or business of our large customers may adversely impact our revenues and profitability.

In the future, we anticipate receiving a large proportion of our revenue in the EV market, particularly from automotive OEM customers. Accordingly, our revenues may be adversely affected by decreases in any of their businesses or market share. For instance, the COVID-19 pandemic and the worldwide semiconductor shortage adversely impacted the automotive industry in 2021 and 2020, resulting in reduced vehicle production schedules and sales from historical levels. Such events in the future could adversely impact our financial condition, operating results and cash flows and could reduce the value of the awarded business and our revenue targets. Furthermore, because our customers typically have no obligation to purchase a specific quantity of parts, a decline in the production levels of any of our major customers, particularly with respect to EV models for which we become a significant supplier, could reduce our sales and thereby adversely affect our financial condition, operating results and cash flows and could reduce the value of the awarded business and our revenue targets.

Employee strikes and labor-related disruptions involving us or one or more of our automotive OEM customers or suppliers may adversely affect our operations.

Our business is labor-intensive. A strike or other form of significant work disruption by our employees would likely have an adverse effect on our ability to operate our business. A labor dispute involving us or one or more of our automotive OEM customers or suppliers, or that could otherwise affect our operations, could reduce our sales and harm our profitability. A labor dispute involving another supplier to our automotive OEM customers that results in a slowdown or a closure of our automotive OEM customers’ assembly plants where our products are included in the assembled parts or vehicles could also adversely affect our business and harm our profitability. In addition, our inability or the inability of any of our automotive OEM customers, our suppliers or our customers’ suppliers to negotiate an extension of a collective bargaining agreement upon its expiration could reduce our sales and harm our profitability. Significant increases in labor costs as a result of the renegotiation of collective bargaining agreements could also adversely affect our business and harm our profitability. Recently, labor shortages have persisted throughout the economy and our industry is no different. If we are unable to address any labor shortages or increased labor costs adequately, we may not be able to meet demand for our product, which may impact our results of operations.operations and the value of the awarded business.

Our growth in the electric vehicle market is dependent upon consumers’ willingness to purchase and use electric vehicles.

Our growth in the electric vehicle market is highly dependent upon the purchase and use by consumers of electric vehicles. If the market for electric vehicles does not gain broad market acceptance or develops more slowly than we anticipate, our business, prospects, financial condition, and operating results will be harmed. The market for electric vehicles is relatively new, rapidly evolving, characterized by rapidly changing technologies, price competition, additional competitors, evolving government regulation and industry standards, frequent new vehicle announcements, long development cycles for electric vehicles OEMs, and changing consumer demands and behaviors. Factors that may influence the purchase and use of electric vehicles include:

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The influence of any of the factors described above may cause current or potential customers not to purchase electric vehicles and could impact the widespread consumer adoption of electric vehicles, which would materially adversely affect our business, operating results, financial condition and prospects.

Our products are expensive relative to other insulation products, which could make it more difficult for us to grow our revenue and achieve broader adoption of our aerogel products.

While we believe our products have superior performance attributes and may sometimes have the lowest cost on a fully installed basis or offer life-cycle cost savings, our competitors offer many traditional insulation products that are priced below our products. Our products are expensive relative to alternative insulation products and end-user customers may not value our products’ performance attributes sufficiently to pay their premium price. This could make it more difficult for us to grow our revenue and achieve broader adoption of our aerogel products. While we seek to lower our manufacturing costs, while maintaining appropriate performance characteristics, and to improve the per square foot costs of our silica aerogel blankets by optimizing our formulations to reduce material costs, we may not be successful in doing so. In addition, some of the benefits of our products are based on reduced installation time and related labor expense. In regions where labor costs are significantly lower than in the United States and Europe, the cost benefits of reduced installation times may not be adequate to overcome the relatively high price of our products and may make it more difficult for us to grow our revenue in those regions.

The insulation markets we serve are highly competitive. If we are unable to compete successfully, we may not be able to increase or maintain our market share and revenues.

We face strong competition primarily from established manufacturers of traditional insulation materials. Large producers of traditional insulation materials, such as Johns Mansville, Saint-Gobain, Knauf Gips, Owens Corning and Rockwool, dominate the insulation market. In addition, we face increasing competition from other companies seeking to develop high-performance insulation materials, including aerogel insulation. For example, Cabot Corporation manufactures, markets and sells a different form of aerogel insulation that is competitive with our products, particularly in the offshore oil and gas sector for use in pipe-in-pipe applications. We are also aware of competitors including Armacell International S.A., Beerenberg AS, Guangdong Alison Hi-Tech Co, Ltd, Nano Tech Co, Ltd, and other Asia-based companies that manufacture and/or market aerogel insulation products in blanket form. Many of our competitors are substantially larger and better capitalized than we are and possess greater financial resources. Our competitors could focus their substantial financial resources to develop new or additional competing products or develop products that are more attractive to potential customers than the products that we offer. We expect to face an increasing amount of competition in the aerogel insulation market over the next several years as existing competitors and new entrants seek to develop and market their own aerogel products.

Because some insulation manufacturers are substantially larger and better capitalized than we are, they may have been offered incentivesthe ability to sell their products at substantially lower costs to a large, existing customer base. Our products are expensive relative to other insulation products and end-user customers may not value our products’ superior performance attributes sufficiently to pay their premium price. In addition, from time to time, we may increase the prices for our products and these price increases may not be accepted by our end-user customers and could result in a decreased demand for our products. Similarly, we may make changes to our products in order to respond to customer demand or to improve their performance attributes and these changes may not be accepted by our end-use customers and could result in a decrease in demand for our products. These competitive factors could:

Any of these outcomes could have a material adverse effect on our results of operations, financial condition and cash flows.

Furthermore, we are in the Stateearly stages of Georgia, Bulloch County Development Authority anddeveloping battery materials for lithium-ion battery systems in electric vehicles, using our carbon aerogel technology. Even assuming successful development of such battery materials for the Cityelectric vehicles market, we will face substantial competition in commercializing such materials. We will compete with other companies, many of Statesboro to locate and operate our planned second manufacturing facility in Statesboro, Georgia. These incentives include a cash grant, income and withholding tax credits, training assistance, the gift of a 43 acre site, a 10 year property tax abatement, infrastructure improvements, reduced fees, site preparation services, and temporary office space. If we do not commence construction of the second manufacturing facility by February 15, 2019, the governmental entities may terminate the agreement under which the incentiveswhom are to be provided. Theredeveloping, or can be noexpected to develop, products similar to ours. This market is large with many competitors. Many of our competitors in this market are more established than we are, and have significantly greater financial, technical, marketing, and other resources than we presently possess. Some of our competitors have greater name recognition and a larger customer base. These competitors may be able to respond more quickly to new or changing opportunities and customer requirements and may be able to undertake more extensive promotional activities, offer more attractive terms to customers, and adopt more aggressive pricing policies. We will not only compete with providers of other long-term solutions, such as lithium metal anode, but also with other well-

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engineered silicon rich anode materials provided by well-capitalized startups with longer experience with silicon-based anodes. Thus, competing silicon-rich anode solutions, even if more expensive, may provide better mid-term solutions for increased energy densities before long-term solutions such as lithium metal anodes become viable. We cannot provide any assurance that we will be able to commence construction prior to that datecompete effectively with current or future competitors or that the partiescompetitive pressures we face will not harm our business, particularly as it relates to the electric vehicles market.

Failure by us to develop, maintain and strengthen strategic relationships with industry leaders to commercialize our products in the electric vehicle market may adversely affect our results of operations and our ability to grow our business.

Our business strategy requires us to align the design and performance attributes of our products and technologies to the evolving needs of the market. To facilitate this process, we have sought out partnerships and relationships with industry leaders in order to assist in the development and commercialization of our products. We face competition from other manufacturers of insulation, thermal barriers, battery materials, and similar products in seeking out and entering into such partnerships and relationships with industry leaders in our targeted electric vehicle market and we may therefore not be successful in establishing strategic relationships in those markets.

In the electric vehicle market, we are seeking to engage with industry leaders to assist in the optimization of our proprietary and patented carbon aerogels to improve the performance and cost of lithium-ion batteries. We have entered into an evaluation agreement will agreewith SKC Co., Ltd. to extendexplore the potential use of Aspen’s silicon-rich carbon aerogel materials in the anode of lithium-ion batteries. We are also exploring various silicon materials for use with our solutions, including materials from a subsidiary of Evonik Industries AG. With the support of such date.third parties, we are seeking to focus our technical development and accelerate the potential commercialization of these carbon aerogel materials in the electric vehicle market. In addition, if we do not achieveare expanding our efforts with several battery and electric vehicle manufacturers to engineer silica aerogel thermal barriers to manage the risk of thermal runaway specific investmentto the design of their lithium-ion battery packs and job creation goals atsystems.

Unlike the Statesboro, Georgia site by 2021,other markets for which we have previously developed thermal solutions, the electric vehicle market may be more demanding technically, financially, and maintain such levelsin other ways. Additionally, the automotive industry may be more risk averse, may have longer product development and testing cycles or otherwise require resources which we cannot muster in a timely manner to develop and market products and solutions. Furthermore, as we develop an anode active material for a period of seven years thereafter,the electric vehicle market, we will be required to repayrely on industry partners in evaluating our materials in their respective anodes in combination with matching cathodes to produce cost effective and compelling cells for next generation electric vehicles. We may not be able to find the valueright partners to achieve our objectives or our interest and our partners’ interest may not be well aligned.

We will continue to seek to engage with additional battery material and electric vehicle manufacturers to realize the full potential of our aerogel technology platform within the electric vehicle market. In the event that we are unable to engage with additional industry leaders or to develop products that meet market needs, we may be less able or unable to penetrate that market. As a result, we may lessen or lose our ability to grow our business in the electric vehicle market that could adversely affect our business, financial condition and results of operations, including impairing our profitability.

We have entered into and may enter into future agreements that may limit our ability to broadly market our products or could involve future obligations, which could make it more difficult for us to commercialize certain of our products and negatively affect our business and results of operations.

In order to develop and commercialize our products, we may enter into joint development agreements or commercial arrangements. We cannot be certain that any products will be successfully developed under any such agreement or, even if developed, that they will be successfully produced or commercialized. These agreements may contain exclusivity, ownership of intellectual property, and other terms that may limit our ability to commercialize any products or technology developed in connection with such agreements, including in ways that we do not envision at the time of entering into the agreement. In addition, these agreements may not obligate either party to make any purchases and may contain technical specifications that must be achieved to the satisfaction of our partner, which we cannot be certain we will be able to achieve. If our ability to commercialize products or technology developed in connection with these agreements is limited or if we fail to achieve the technical specifications that may be required, then our business, financial condition, and results of operations could be materially adversely affected.

We may not be able to successfully develop and introduce new products in a timely manner at competitive prices, which would limit our ability to grow and maintain our competitive position and could adversely affect our financial conditions, results of operations and cash flow.

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Our growth depends, primarily, on continued increase in the sales of existing products, including by improving the performance of existing products, as well as the successful development and introduction of new products, including new products for applications within the electric vehicle market, which face the uncertainty of customer acceptance and reaction from competitors. New product development requires considerable resources and attention that may shift our focus from and may disrupt our current operations, given that we have fewer resources than many of our competitors. We may not be able to sustainably manufacture new products with attractive margins and we may experience higher production inefficiencies than expected. Any delay in the development or launch of a new product could result in our not being the first to market, which could compromise our competitive position. Even if we manage to develop and introduce new products, such products may not address market needs or otherwise compete with third-party products. Even if our new products are adopted by the market, we may not achieve the growth in revenue that we expect from such new products and our investment in these efforts may not be proportional to our expected or actual revenue growth. If we are unable to develop and introduce new products in a cost-effective manner or otherwise manage effectively the operations related to new products, our results of operations and financial condition could be adversely impacted.

If we do not continue to develop and maintain distribution channels for our products and to meet our customers’ demand for our products, our results of operations could be adversely affected.

For a significant portion of our revenues, we rely on sales to distributors who then sell our products to end-users in our target markets. Our success depends, in part, on our maintaining satisfactory relationships with these distributors and develop new relationships in new geographies. Our distributors require us to meet expectations of delivery, quality, and pricing of our products, at both the distribution channel level and at the level of the end-user of our products. If we fail to meet expected standards, our revenues would decline and this could materially adversely affect our business, results of operations, and financial condition. In addition, we have been unable at times to produce sufficient amounts of our products to meet demand from our distributors and customers and we may not be able to avoid capacity constraints in the future if demand exceeds our expectations or we fail to expand our capacity in our planned second manufacturing facility in Bulloch County, Georgia, in a timely manner. If we are unable to deliver our products within such short timeframes, we may be at risk of losing direct or end-user customers. Accordingly, shortfalls in sales could materially adversely affect our business and results of operations.

The qualification process for our products can be lengthy and unpredictable, potentially delaying adoption of our products and causing us to incur significant expense potentially without recovery.

Qualification of our products by many of our direct and end-user customers can be lengthy and unpredictable and many of these direct and end-user customers have extended budgeting and procurement processes. This extended sales process requires the dedication of significant time by our personnel and our use of significant financial resources, with no certainty of success or recovery of our related expenses. Furthermore, even after an extensive qualification process, our products may fail to meet the standards sought by our end-user customers and may not be qualified for use by such end-user customers. Additionally, our continued process improvements and cost-reduction efforts may require us or the end-users to re-qualify our products. Failure to qualify or re-qualify our products may result in us losing such companies as end-users of our products, which would cause a decrease in our revenue or revenue growth rate, either of which could materially adversely affect our business and results of operations.

Our revenue may fluctuate, which may result in a high degree of variability in our results of operations and make it difficult for us to plan based on our future outlook and to forecast our future performance.

Our revenue may fluctuate from period to period due to a wide variety of factors. Since we rely on sales to a limited number of direct customers/distributors and end-user customers, changes in demand from one or more direct customers or end-users can significantly impact our revenue from period to period. In addition, the sales cycles for our products, including their qualification for use, are long and can result in unpredictability in our revenues. We expect to have an increasing percentage of our products sold for use in capital projects in the energy infrastructure market, which orders tend to be larger and more sporadic. This will further increase this unpredictability and the difficulty for us in forecasting quarterly or annual performance. Because of these factors, we have a limited basis on which to predict our quarterly revenue. Our profitability from period-to-period may also vary due to the mix of products that we sell in different periods. These factors may result in a high degree of variability in our results of operations and will make it difficult for us to accurately evaluate and forecast quarterly or annual performance and to plan based on our future outlook.

The results of our operations could be materially adversely affected if our operating expenses incurred do not correspond with the timing of our revenues.

Most of our operating expenses, such as manufacturing facility expenses, employee compensation and research expenses, are either relatively fixed in the short-term or incurred in advance of sales. In addition, our spending levels are based in part on our expectations regarding future revenues. As a result, if revenues for a particular quarter are below expectations, we may not be able to

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proportionately reduce operating expenses for that quarter. Our reliance on sales to a limited number of direct customers, distributors and end-user customers, the length of our sales cycles and the potentially increasing percentage of our products sold for use in capital projects each can cause sporadic demand for our products that would limit our ability to predict future sales. This limitation could result in our being unable to reduce spending quickly enough to compensate for reductions in sales and could therefore adversely affect our results of operations for any particular operating period. Additionally, as we pursue rapidly evolving opportunities in the electric vehicle market, we have been hiring and will continue to hire additional personnel and incur additional expenses as we seek to implement and increase our capabilities and production capacity. The costs associated with these measures are being and will continue to be incurred in advance of our anticipated revenue opportunities, which will negatively impact our results of operations and profitability.

If we lose key personnel upon whom we are dependent, or if we are unable to successfully recruit and retain skilled employees, we may not be able to manage our operations and meet our strategic objectives.

Our continued success depends to a considerable degree upon the continued services of a small number of our employees with critical knowledge of our products, our manufacturing process, our intellectual property, our customers, and our global operations. The loss or unavailability of any incentives receivedof these individuals could harm our ability to execute our business plan, maintain important business relationships, and complete certain product development initiatives, which could harm our business. In the event that any of these key individuals leave their employment with us or take new employment with a competitor, our business and results of operations could be materially adversely affected. In addition, our continued success depends upon the availability, contributions, vision, skills, experience, and effort of our senior management, financial, sales and marketing, engineering, and production teams and our ability to recruit additional experienced personnel, particularly as we pursue growth opportunities in the EV market. We do not maintain “key person” insurance on any of our employees. We have entered into employment agreements with certain members of our senior management team, but none of these agreements guarantee the services of the individual for a specified period of time. All of the agreements with members of our senior management team provide that employment is at-will and may be terminated by the employee at any time and without notice.

The loss of the services of any of key employees or our inability to recruit and retain qualified personnel or advisors might impede our operations or the achievement of our strategic and financial objectives. The loss or interruption of the service of any of these individuals or our inability to attract or retain other qualified personnel or advisors could have a material adverse effect on our business, financial condition, and results of operations and could significantly reduce our ability to manage our operations and implement our strategy.

We are exposed to the credit risk of some of our direct customers, including distributors, contractors and OEMs, which subjects us to the risk of non-payment for our products.

We distribute our products, in part, through a network of distributors, contractors and OEMs, some of which may not be well capitalized and may be of a lower credit quality. This direct customer network subjects us to the risk of non-payment for our products. In addition, we operate in a number of countries characterized by intermittent governmental, entities,market and financial crises. During 2019, we determined that collection of the remaining unpaid accounts receivable from a Brazilian contractor of $2.6 million was unlikely and recorded a write-off of the accounts receivable and the corresponding allowance for doubtful accounts. During 2020, we established an estimated reserve for uncollectible accounts receivable for $0.3 million. In addition, during periods of economic downturn in the global economy, our exposure to credit risks from our direct customers may increase, and our efforts to monitor and mitigate the associated risks may not be effective. In the event of additional non-payments by one or more of our direct customers, our business, financial condition and results of operations could be materially adversely affected.

If we fail to achieve the increase in production capacity that our long-term growth requires in a timely manner, or at all, our growth may be hindered and our business or results of operations may be materially adversely affected.

If, for any reason, including our inability to obtain financing, our planned expansion of capacity in a second plant in Bulloch County, Georgia or the construction of an automated fabrication facility in Mexico should fail to be completed in a timely manner, or at all, or any of the production lines in our existing or future manufacturing facilities do not operate according to our expectations, sales and or profitability may be impeded, our growth may be hindered and our business or results of operations may be materially adversely affected.

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Many factors could delay, impede or prevent the construction and operation of future, potential manufacturing facilities, including in Bulloch County, Georgia or Mexico, or cause us to reduce the scale or scope of the expansion projects, including:

Many factors could prevent our existing and future potential manufacturing facilities from producing at expected, projected or targeted nameplate capacities or could cause us to reduce the scale or scope of future capacity expansions or facilities, including:

Any such capacity expansion will place a significant strain on our senior management team and our financial and other resources. The costs associated with and the resources necessary for our capacity expansion plans could exceed our expectations and result in a materially adverse impact on our business, results of operations, financial condition, and cash flows.

If we are unable to complete the projects as contemplated, the costs incurred in connection with such projects may not be recoverable. For example, during 2013, we redesigned and reduced the planned scale of the third production line in our East Providence, Rhode Island facility. We recorded an associated $3.4 million impairment charge during 2013 to write off certain construction in progress assets. In addition, during 2018, we determined that our engineering plans, designs and drawings for a second manufacturing facility in Bulloch County, Georgia, would not be used due principally to our decision to significantly delay construction of the facility and intervening technical developments. Accordingly, we recorded an impairment charge of $7.4 million in 2018 on pre-construction and related costs for the Georgia facility.

A redesign of, change in scale of, or failure to initiate and complete the construction of potential manufacturing facilities and other similar impairments of our assets in the future could result in a materially adverse impact on our business, results of operations, and financial condition.

Furthermore, manufacturing of our silicon-rich carbon aerogel anode materials at the required scale and at a competitive cost may be challenging. Our silicon-rich anode materials are designed to replace graphite partially or completely in current graphitic anodes. Graphite prices are at least an order of magnitude lower than projected cost of our silicon-rich materials. In order to participate in the silicon-rich anode market with any meaningful market share, we need to rapidly scale up our processes to make hundreds of tons per year. Though we have had prior experience successfully scaling up silica-based aerogels, carbon aerogels and silicon-carbon composite aerogels may present their own unique technical and supply chain challenges that may be difficult to overcome in short order, which couldmay adversely impact our business.

If the expected growth in the demand for our products does not follow after each of our planned capacity expansions, then our business will be materially adversely affected.

Our long-term growth plan requires that we continue to increase our production capacity. As we pursue our capacity expansion plans, we will incur significant capital expenditures and increased levels of manufacturing expenses in anticipation of expected growth

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in demand for our products. In particular, we expect that these substantial additional expenditures will be made by us significantly in advance of the existence of the level of demand that would ensure the most efficient use of our planned new capacity. As a result, if the expected growth in demand for our products fails to materialize within a reasonable amount of time following each of our planned capacity expansions, whether because of low oil and gas prices, the failure of our automotive OEM customers to place firm orders at levels anticipated based on our awarded business expectations, the loss of a significant customer, our inability to grow our sales of EV products, the failure to develop new markets or for any other reason, then we would suffer decreased levels of cash flow and our financial condition and results of operations.operations would be adversely affected.

We have elected to delay the second manufacturing facility to better align the timing of this capacity expansion with our assessment of future demand. As a result, we have not yet incurred an obligation to repay any incentives that may be provided by the government entities.

Growth has placed significant demands on our management systems and our infrastructure. If we fail to manage our long-term growth effectively, we may be unable to execute our business plan, address competitive challenges and meet applicable product specifications and technical and delivery requirements.

We may be unable to manage our growth. To manage our anticipated future growth, we must continue to:

All of these measures will require significant expenditures and will demand the attention of management. At certain points in the past, significant growth in demand for our products has put our management and operating systems under strain. In addition, the physical expansion of our operations may lead to significant costs and may divert our management and business development resources. Furthermore, we compete for personnel and advisors with other companies and other organizations, many of which are larger and have greater name recognition and financial and other resources than we do. Due to our limited resources, we may not be able to effectively manage the expansion of our operations or adequately recruit, train, and retain qualified personnel. Any inability to manage growth could result in a loss of existing customers and revenues, delays in the execution of our business plans, and disruption of our operations. If we fail to achieve the necessary level of efficiency in our organization as it grows, it could have a material adverse impact on our business, results of operations and financial conditions.

We allocate our manufacturing operations, sales and marketing, research and development, general and administrative and financial resources based on our business plan, which includes assumptions about current and future orders and revenues from customers. However, the factors involved in such projections are uncertain. If our assumptions regarding these factors prove to be incorrect or if competing products gain further market share, then actual demand for our aerogel products could be significantly less than the demand we anticipate and we may not be able to grow our revenue or achieve profitability.

Shortages of the raw materials used in the production of our products, increases in the cost of such materials or disruptions in our supply chain could have a material adverse impact on our financial condition and results of operations.

The raw materials used in the production of our products consist primarily of fiber battings, silica precursors and additives. In addition, the production process requires the use of process gases and other materials typical to the chemical processing industry, as well as access to electricity, natural gas, water and other basic utilities. Although we are not dependent on a single supplier, we are dependent on the ability of our third-party suppliers to supply such materials on a timely and consistent basis. While these materials and utilities are available from numerous sources, they may be subject to fluctuations in availability and price.

Our third-party suppliers may not dedicate sufficient resources to meet our scheduled delivery requirements or our suppliers may not have sufficient resources to satisfy our requirements during any period of sustained or growing demand. Failure of suppliers to supply, delays in supplying or disruptions in the supply chain for our raw materials, or adverse allocations in the supply of certain high demand raw materials could materially adversely affect the results of our operations. Supply disruptions may affect our ability to meet our delivery schedules on a timely basis and materially negatively impact our results of operations. For example, in September 2015, pursuant to a force majeure notification, our primary carbon dioxide gas supplier temporarily curtailed supply of carbon dioxide to us due to a feedstock issue impacting the northeastern United States. During this period, the supply disruption required that we intermittently idle a portion of our manufacturing equipment thereby reducing our production volume.

Most of our raw materials are procured through individual purchase orders or short-term contracts and not through long-term contracts that ensure a fixed price or guaranteed supply for an extended period of time. This procurement strategy may not support sustained long-term supply chain stability. Fluctuations in the prices of these raw materials could have a material adverse effect on our results of operations. Our ability to pass increases in raw material prices on to our customers is limited due to competitive pricing pressure and the time lag between increased costs and implementation of related price increases.

In particular, we purchase a variety of silica precursors from several suppliers, mostly pursuant to individual purchase orders or short-term contracts and not pursuant to long-term contracts. We do not have a secure, long-term supply of silica precursors. We may not be able to establish arrangements for secure, long-term silica precursor supplies at prices consistent with our current costs or may incur a delay in supply while we seek alternative sources. In addition, fluctuations in ethanol prices may affect the cost of silica precursors. Any inability to continue to purchase silica precursors without long-term agreements in place, or to otherwise establish a

long-term supply of silica precursors at prices consistent with our current costs, would have a material adverse effect on our ability to increase our sales and achieve profitability.

From time to time we have had difficulty in consistently producing products that meet applicable product specifications and technical and delivery requirements, and such difficulties could expose us to financial, contractual or other liabilities.

Our insulation products are technologically advanced and require a precise and complex manufacturing process. Because of the precision and complexity of this manufacturing process and the high-performance characteristics of our products, from time to time we have had difficulty in consistently producing products that meet applicable specifications and technical and delivery requirements, including, our customers’ and the end-users’ specifications and requirements. At certain times in the past, the growth in demand for our products has contributed to this difficulty by putting significant pressure on our management, our personnel and our production facilities. See “Risk Factors — Growth has placed significant demands on our management systems and our infrastructure. If we fail to manage our long-term growth effectively, we may be unable to execute our business plan, address competitive challenges and meet applicable product specifications and technical and delivery requirements.”

Any failure to meet these product specifications or technical and delivery requirements could result in the termination of existing customer contracts or purchase orders, the elimination or reduction of future purchase orders, the impairment of customer relationships, and the incurrence of financial, contractual or other liabilities. Products that do not meet these specifications or requirements may also expose us to warranty and product liability claims and associated adverse publicity. Any such termination, reduction, impairment, liability or publicity could result in a broader loss of existing customers and revenues and delay the execution of our business plans, disrupt our operations and could have a material adverse effect on our results of operations and financial condition.

The market for insulation products incorporating aerogel blankets is relatively undeveloped and our products may never be widely adopted, which would have a material adverse effect on our business.

The market for insulation products utilizing aerogel blankets is relatively undeveloped. Accordingly, our future results of operations will depend in large part on our ability to gain market share of the global energy infrastructure insulation market. Our ability to gain market share in this market is highly dependent on the acceptance of our products by large, well-established end-users, distributors, contractors and OEMs. The insulation market has historically been slow to adopt new technologies and products. Most insulation types currently in use in these markets have been in use for over 50 years. In addition, there is a tendency of end-users in some of our markets to opt for the lower short-term costs associated with traditional insulation materials. If we fail to successfully educate existing and potential end-users, distributors, contractors and OEMs regarding the benefits and value of our aerogel products, or if existing users of our products no longer rely on aerogel insulation for their insulation needs, our ability to sell our products and grow our revenue could be limited.

Our business strategy also includes the development of next generation products with the performance characteristics and price points required by markets outside the energy infrastructure market, including the building materials market. In the event that we are unable to develop products that meet market needs, we may be unable to successfully penetrate such markets. In addition, the innovative product development process requires the dedication of significant human, technical and financial resources, with no certainty of success or recovery of our related expenses. As a result, we may be unable to grow our business in markets outside of the energy infrastructure market, which could adversely affect the demand for our products.

Because we are often a new supplier to our end-use customers, we also may face concerns from these end-use customers about our reliability and our ability to produce our products in a volume sufficient to meet their supply needs. As a result, we may experience a reluctance or unwillingness by existing end-use customers to expand their use of our products and by potential end-use customers to begin using our products. Our products may never reach mass adoption, and changes or advances in technologies could adversely affect the demand for our products.

A failure to increase, or a decrease in, demand for aerogel insulation products caused by lack of end-user, market or distribution channel acceptance, technological challenges or competing technologies and products would result in a lower revenue growth rate or decreased revenue, either of which could have a material adverse effect on our business and our results of operations.

Our products are expensive relative to other insulation products, which could make it more difficult for us to grow our revenue and achieve broader adoption of our aerogel products.

While we believe our products have superior performance attributes and may sometimes have the lowest cost on a fully-installed basis or offer life-cycle cost savings, our competitors offer many traditional insulation products that are priced below our products. Our products are expensive relative to other insulation products and end-use customers may not value our products’ performance

attributes sufficiently to pay their premium price. This could make it more difficult for us to grow our revenue and achieve broader adoption of our aerogel products. In addition, some of the benefits of our products are based on reduced installation time and related labor expense. In regions where labor costs are significantly lower than in the United States and Europe, the cost benefits of reduced installation times may not be adequate to overcome the relatively high price of our products and may make it more difficult for us to grow our revenue in those regions.

The insulation market we serve is highly competitive; if we are unable to compete successfully, we may not be able to increase or maintain our market share and revenues.

We face strong competition primarily from established manufacturers of traditional insulation materials. Large producers of traditional insulation materials, such as Johns Mansville, Saint-Gobain, Knauf Gips, Owens Corning and Rockwool, dominate the insulation market. In addition, we face increasing competition from other companies seeking to develop high-performance insulation materials, including aerogel insulation. For example, Cabot Corporation manufactures, markets and sells a different form of aerogel insulation that is competitive with our products, particularly in the offshore oil and gas sector for use in pipe-in-pipe applications. In addition, we are aware of competitors in China, including Guangdong Alison Hi-Tech Co, Ltd and Nano Tech Co, Ltd, which manufacture and market aerogel insulation products in blanket form. Many of our competitors are substantially larger and better capitalized than we are and possess greater financial resources. Our competitors could focus their substantial financial resources to develop new or additional competing products or develop products that are more attractive to potential customers than the products that we offer. We expect to face an increasing amount of competition in the aerogel insulation market over the next several years as existing competitors and new entrants seek to develop and market their own aerogel products.

Because some insulation manufacturers are substantially larger and better capitalized than we are, they may have the ability to sell their products at substantially lower costs to a large, existing customer base. Our products are expensive relative to other insulation products and end-use customers may not value our products’ superior performance attributes sufficiently to pay their premium price. In addition, from time to time we may increase the prices for our products and these price increases may not be accepted by our end-use customers and could result in a decreased demand for our products. Similarly, we may make changes to our products in order to respond to customer demand or to improve their performance attributes and these changes may not be accepted by our end-use customers and could result in a decrease in demand for our products. These competitive factors could:

Any of these outcomes could have a material adverse effect on our results of operations, financial condition and cash flows.

A substantial portion of our revenue comes from sales in foreign countries and we mayare planning to expand our operations outside of the United States, which subjects us to increased economic, trade, foreign exchange, operational and political risks that could materially adversely impact our business, financial conditions and results of operations and also increase our costs and make it difficult for us to operate profitably.

A substantial portion of our sales are to shipment destinations outside of the United States, including Korea, India, Hong Kong,France, Norway, Brazil,Thailand, Russia, Canada, Germany, Taiwan, Australia, Great Britain, GermanyColumbia, and the Netherlands.South Korea. Total revenue generated from outside of the United States, based on our shipment destination, amounted to $60.2$54.8 million or 54%45% of total revenue, $82.0$55.5 million or 70%55% of total revenue and $78.0$81.0 million or 64%58% of total revenue, for the years ended December 31, 2017, 20162021, 2020 and 2015,2019, respectively. In addition, we are planning to construct an automated fabrication facility in Mexico and commence operations during 2022.

As a result, we are subject to a number of risks, including, but not limited to:

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In addition, sales of our products are generally conducted in U.S. dollars and we also bid for foreign projects in U.S. dollars. The strengthening of the U.S. dollar against the local currencies in the countries into which we sell our products may result in our products becoming more expensive relative to competing insulation products priced in the local currency.currencies. If the U.S. dollar strengthens, our sales into foreign countries with relatively weaker currencies may be adversely impacted and we may be less competitive in bidding for projects in those markets.

Our success will depend in large part on our ability to manage the effects of continued global political and economic uncertainty, including those related to the ongoing recent tensions between Russia and Ukraine and political instability in Ukraine, especially in our international markets.

Because of our significant international operations, we could be materially adversely affected by violations of the U.S. Foreign Corrupt Practices ActFCPA and similar anti-corruption, anti-bribery, and anti-kickback laws.

We operate on a global basis, with 54%45% of our product sales in 2017 being2021 made to destinations outside of the United States, including Canada, Mexico, Europe, Asia, South America, and the Middle East. Our business operations and sales in countries outside of the United States are subject to anti-corruption, anti-bribery and anti-kickback laws and regulations, including restrictions imposed by the Foreign Corrupt Practices Act, or FCPA, as well as the United Kingdom Bribery Act of 2010, or UK Bribery Act. The FCPA, UK Bribery Act, and similar anti-corruption, anti-bribery and anti-kickback laws in other jurisdictions generally prohibit companies, their intermediaries and their agents from making improper payments to government officials or any other persons for the purpose of obtaining or retaining business. We operate and sell our products in many parts of the world that have experienced governmental corruption to some degree and, in certain circumstances, strict compliance with anti-corruption, anti-bribery and anti-kickback laws may conflict with local customs and practices. We train our employees concerning anti-corruption, anti-bribery, and anti-kickback laws and have policies in place that prohibit employees from making improper payments. We continue to implement internal controls and procedures designed to ensure that we comply with anti-corruption, anti-bribery, and anti-kickback laws, rules and regulations and mitigate and protect against corruption risks. We cannot provide assurance that our internal controls and procedures will protect us from reckless, criminal or other acts committed by our employees or third-parties with whom we work. If we are found to be liable for violations of the FCPA or similar anti-corruption, anti-bribery, and anti-kickback laws in international jurisdictions, either due to our own acts or out of inadvertence, or due to the acts or inadvertence of others, we could suffer criminal or civil fines or penalties or other repercussions, including reputational harm, which could have a material adverse effect on our business, results of operations, and financial condition.

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A failure to comply with export control or economic sanctions laws and regulations could have a material adverse impact on our business, results of operations or financial condition. We may be unable to ensure that our distributors comply with applicable sanctions and export control laws.

We operate on a global basis, with 54%45% of our product sales in 2017 being2021 made to destinations outside of the United States, including Canada, Mexico, Europe, Asia, South America and the Middle East. We face several risks inherent in conducting business internationally, including compliance with applicable economic sanctions laws and regulations, such as laws and regulations administered by the United States Department of Treasury’s Office of Foreign Assets Control, or OFAC, the United States Department of State and the United States Department of Commerce. We must also comply with all applicable export control laws and regulations of the United States and other countries. Violations of these laws or regulations could result in significant additional

sanctions including criminal or civil fines or penalties, more onerous compliance requirements, more extensive debarments from export privileges or loss of authorizations needed to conduct aspects of our international business.

In certain countries, we may engage third partythird-party agents or intermediaries, such as customs agents, to act on our behalf and ifbehalf. If these third partythird-party agents or intermediaries violate applicable laws, their actions may result in criminal or civil fines or penalties or other sanctions being assessed against us. We take certain measures designed to ensure our compliance with U.S. export and economic sanctions law and we believe that we have never sold our products to Iran, Cuba, Sudan, or Syria through third partythird-party agents or intermediaries or made any effort to attract business from any of these countries. However, it is possible that some of our products were sold or will be sold to distributors or other parties that, without our knowledge or consent, re-exported or will re-export such products to these countries. Although none of our non-U.S. distributors are located in, or to our knowledge, conduct business with Iran, Cuba, Sudan, or Syria, we may not be successful in ensuring compliance with limitations or restrictions on business with these or other countries subject to economic sanctions. There can be no assurance that we will be in compliance with export control or economic sanctions laws and regulations in the future.

Any such violation could result in significant criminal or civil fines, penalties or other sanctions and repercussions, including reputational harm that could have a material adverse impact on our business, results of operations or financial condition.

We rely on sales to a limited number of direct customers, including distributors, contractors, OEMs, partners and end-useend-user customers for the substantial majority of our revenue, and the loss of one or more significant direct customers or several of our smaller direct customers could materially harm our business. In addition, we understand from our direct customers that a substantial majority of their sales of our products are to a small number of end-useend-user customers and the loss of one or more significant end-useend-user customers or several of our smaller end-useend-user customers could materially harm our business.

A substantial majority of our revenue is generated from sales to a limited number of direct customers, including distributors, contractors, OEMs, partners and end-useend-user customers. For the years ended December 31, 2017, 20162021, 2020 and 2015,2019, total revenue from our top ten direct customers represented 69%68%, 67%66%, and 64%68% of our revenues, respectively. Distribution International, Inc. and TechnipFMC represented 15% and 12%28% of our total revenue in 2017, respectively, Reliance Industries Limited and2021; Distribution International, Inc. and SPCC Joint Venture represented 25%21% and 12%15% of our total revenue in 2016, respectively; and Reliance Industries Limited and2020; Distribution International, Inc. and SPCC Joint Venturerepresented 14%20% and 12%13% of our total revenue in 2015, respectively.2019. Although the composition of our significant distributors, contractors, OEMs, partners and end-useend-user customers will vary from period to period, we expect that most of our revenues will continue, for the foreseeable future, to come from sales to a relatively small number of direct customers. In addition, we understand from our direct customers that a substantial majority of their sales of our products are to a small number of end-useend-user customers.

Our direct customer concentration also creates accounts receivable concentrations and related risks. As of December 31, 2017, Reliance Industries Limited,2021, Distribution International, Inc. and Qualiman EngenhariaGeneral Motors, LLC accounted for 19%, 14%27% and 11%17% of our accounts receivable respectively.

A majority of our expected sales in the EV market in 2022 and a substantial amount in 2023 are expected to be to a single customer. The substantial majority of our sales to distributors are transacted on a purchase order basis. The contracts we enter into with our direct customers generally do not include long-term commitments or minimum volumes that ensure future sales of our products. In addition, we understand that our direct customers’ contracts with end-useend-user customers also generally do not include such commitments or minimums. Consequently, our results of operations may fluctuate significantly from period-to-period based on the actions of one or more significant direct customers or end-useend-user customers.

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A direct customer may take actions that affect us for reasons that we cannot anticipate or control, such as reasons related to an end-useend-user customer’s financial condition, contractual arrangements with end-user customers, changes in business strategy or operations, the introduction of alternative competing products, or as the result of the perceived quality or cost-effectiveness of our products. Our agreements with these direct customers may be cancelled if we fail to meet certain product specifications or materially breach the agreement or for other reasons outside of our control. In addition, our direct customers may seek to renegotiate the terms of current agreements upon maturity or renewals.renewal. The loss of, or a reduction in sales or anticipated sales to, one or more of our significant direct customers or end-useend-user customers or several of our smaller direct customers or end-useend-user customers could have a material adverse effect on our business, financial condition, and results of operations.

If we are unable to maintain our technological advantage over our competitors, our business may be materially adversely affected.

We research, develop, manufacture and sell high-performance aerogel insulation products. Rapid and ongoing changes in technology and product standards could quickly render our products less competitive, or even obsolete, particularly if we fail to continue to improve the performance of our insulation products. We are currently developing new applications for our existing products as well as new aerogel technologies; however, weour efforts may not be successful in doing so and new applications or technologies

may not be commercially useful. Other companies that are seeking to enhance traditional insulation materials have recently introduced or are developing other emerging insulation technologies. These competitors are engaged in significant development work on these various insulation products. Competing technologies that outperform our insulation in one or more performance attributes could be developed and successfully introduced.

We are also aware of certain companies, including Armacell International S.A., Beerenberg AS, Guangdong Alison Hi-Tech Co, Ltd andLtd., Nano Tech Co, Ltd, and a variety of other companies based in Asia that have developed or are developing and/or marketing products using aerogel technology similar to our technology and these or other companies have introduced or could introduce aerogel products that compete directly with our products and could in the future outperform themour products in one or more performance attributes, could be offered to our customers as a cheaper alternative to our products or may result in increased pricing pressure on us.our products. As a result of this increasing current competitioncompetitive activity by other companies in the aerogel insulation market, both now and potentialin the future, competition, our productswe may not compete effectivelybe able to sustain our competitive position in our target markets. Any degradation in our competitive position could have a material adverse effect on our business, financial condition and results of operations.

In addition, certain technological advancements may render our products obsolete. In particular, the future direction of electric vehicle battery packs may strike a commercially reasonable balance between the need for higher energy densities and the need for better safety outcomes. A rapid progress towards technologies such as solid electrolytes, safer electrode active materials (such as LFP cathodes) may provide a better balance of energy density and safety, render our premium thermal barriers obsolete and have a material adverse effect on our business, financial condition and results of operations.

Negative perceptions regarding the safety, quality or other attributes of our products or a failure or a perceived failure of our products could have a material adverse effect on our results of operations and could make us unable to continue our business.

Given the history of asbestos as an insulation material, we believe that there is an elevated level of attention towards perceived health and safety risks in the insulation industry. As a consequence, it is essential to our existing business and to our future growth that our products are considered safe. Even modest perceptions by existing or potential distributors, contractors or end-useend-user customers in our target markets that our products are not safe could have a critical impact on our ability to sell our products and to continue as a business. Further, our competitors have in the past, and may in the future, seek to create or perpetuate such perceptions. There is risk of an actual or perceived failure of our products or other negative perceptions regarding our products, such as perceived health hazards. For example, dust is produced by our products during their installation and use, which increases the likelihood of the perception of a hazard. Another example is the potential in very high temperature applications for material failure. Like most insulation products, our Pyrogel XT and XT-EXTE products will normally go through a controlled burn-in process immediately after exposure to high temperatures. If installed improperly, the burn-in may proceed too rapidly and the material may become damaged. In addition, the thermal performance of our materials may degrade over time due to a variety of operational or environmental conditions. We take steps to educate our distributors, contractors, OEMs and end-useend-user customers on the nature of our products and the proper installation and operating procedures in order to mitigate these risks. Such an event, or the perception of such an event, could quickly result in our direct and end-useend-user customers replacing our products with traditional insulation materials which could have a material adverse effect on our results of operations.

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Our activities and operations are subject to numerous health and safety laws and regulations. If we violate such regulations, we could face penalties and fines or be required to curtail or cease operations.

We are subject to numerous health and safety laws and regulations in each of the jurisdictions in which we operate. These health and safety laws and regulations apply to us including with regard to hazardous substances that we use in our manufacturing process and that certain of our products contain. These substances include titanium dioxide, iron oxide, ethanol, and carbon black, each of which has been determined, in certain forms, with certain contaminants and at certain levels, to be hazardous, possibly carcinogenic, or otherwise harmful to humans. We may also consider and adopt the use of other hazardous substances or substances potentially containing hazardous contaminants, with similar or higher risks in connection with new products or modifications to our current products and related manufacturing.

Our processes also require the use of other regulated substances in raw material delivery and manufacturing, including among others, ethanol. Applicable laws and regulations require us to obtain and maintain permits and approvals and implement health and safety programs and procedures to control risks associated with our operations. Compliance with those laws and regulations can require us to incur substantial costs. Moreover, if our compliance programs are not successful, we could be subject to penalties or to revocation of our permits, which may require us to curtail or cease operations of the affected facilities. In particular, the construction of our second manufacturing facilityfuture, potential facilities will require us to obtain and maintain new permits from various regulatory authorities and if the issuance of such permits is delayed or denied, it would slow or potentially prevent the expansion of our manufacturing capacity. Violations of laws, regulations and permit requirements may also result in criminal sanctions, injunctions and the denial or revocation of our various permits.

While we use hazardous substances, including titanium dioxide, and carbon black, and similar chemicals, in forms and at levels that are subject to current rules and regulations, such rules and regulations may become more stringent such that we are required to modify our manufacturing process and such that our customers’ use of our products may be impacted. Regulatory changes contemplated in several countries, particularly in Europe, may substantially increase these risks. Changes in the products or manufacturing processes may require the customers to perform an extensive re-qualification process, which our customers may not want to undertake for various reasons, resulting in the customer switching to competing products. In addition, changes in our production or manufacturing process may result in uses above currently permitted levels. Such uses or changes in rules or regulations could materially adversely affect our business, financial condition, and results of operations.

Health and safety laws, regulations and permit requirements may become more stringent or otherwise change. Any such changes could require us to incur materially higher costs than we currently have.at present. Our costs of complying with current and future health and safety laws, regulations and permit requirements, and any liabilities, fines or other sanctions resulting from violations of them, could adversely affect our business, financial condition, and results of operations.

We may face certain product liability or warranty claims on our products, including from improper installation of our products by third parties. As a consequence, we could lose existing and future business and our ability to develop, market and sell our insulation could be harmed.

The design, development, production and sale of our products involve an inherent risk of product liability claims and associated adverse publicity. We seek to lower our manufacturing costs, while maintaining appropriate performance characteristics, and to improve the per square foot costs of our silica aerogel blankets by optimizing our formulations to reduce material costs. If our products do not function as represented as a result of such changes in formulations, we may face warranty claims on our products. In addition, we may be named directly in product liability suits relating to our products, even for defects resulting from errors of our distributors, contractors, OEMs, partners, or end-useend-user customers. These claims could be brought by various parties, including distributors, contactors, OEMs, partners, and other direct end-useend-user customers who are purchasing products directly from us, or end-useend-user customers who purchase our products from our distributors. We could also be named as co-parties in product liability suits that are brought against the distributors, contractors, OEMs, partners, and end-useend-user customers. Our products are often installed in our end-useend-user customers’ complex and capital intensivecapital-intensive facilities in inherently hazardous or dangerous environments, including in the energy, petrochemical, and power generation industries, where the potential liability from risk of loss could be substantial. The failure of our products to perform to customer expectations, whether or not because of improper installation, could give rise to warranty claims against us. We take steps to educate our distributors, contractors, OEMs, partners, and end-useend-user customers about the proper installation procedures to mitigate the risk of an uncontrolled burn-in for very high temperature applications of Pyrogel XT and XT-E.XTE. However, installation of our products is handled by third parties over whom we have no control and errors or defects in their installation may also give rise to claims against us, diminish our brand, or divert our resources from other purposes. Any of these claims, even if without merit, could result in costly litigation or divert management’s attention and resources. In addition, many of our products are integrated into the final products of our customers. The integration of our products may entail the risk of product liability or warranty claims based on malfunctions or hazards from both our products and the final products of our customers.

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A material product liability claim may seriously harm our results of operations, as well as damage our customer relationships and reputation. Although we carry general liability insurance, our current insurance coverage could be insufficient to protect us from all liability that may be imposed under these types of claims. InsuranceIn addition, our distributors, contractors, OEMs, partners, and end-user customers may not have adequate insurance to cover against potential claims. If claims or losses exceed our liability insurance coverage, we may go out of business. In addition, insurance coverage is expensive, may be difficult to obtain and may not be available in the future on acceptable terms or at all. Our distributors, contractors, OEMs, partners and end-use customers may not have adequate insurance to cover against potential claims. This insurance may not provide adequate coverage against potential losses, and if claims or losses exceed our liabilityA significant increase in the cost of insurance coverage we may go out of business. In addition, insurance coverage may become more expensive, which would harmcould adversely affect our business, financial condition and results of operations.

Furthermore, if any of our products are or are alleged to be defective, particularly the products that we sell to our OEM customers, we may be required to participate in a recall involving such products. Each automotive manufacturer has its own practices regarding product recalls and other product liability actions relating to its suppliers. However, as suppliers become more integrally involved in the vehicle design process and assume more of the vehicle assembly functions, OEMs continue to look to their suppliers for contribution when faced with recalls and product liability claims. OEMs also require their suppliers to guarantee or warrant their products and bear the costs of repair and replacement of such products under new vehicle warranties. Depending on the terms under which we supply products to an automotive OEM, an automotive OEM may attempt to hold us responsible for some or all of the repair or replacement costs of products under new vehicle warranties when the OEM asserts that the product supplied did not perform as warranted.

In addition, as we adopt new technology, we face an inherent risk of exposure to the claims of others that we have allegedly violated their intellectual property rights. We cannot ensure that we will not experience any material warranty, product liability or intellectual property claim losses in the future or that we will not incur significant costs to defend such claims.

We may incur significant costs complying with environmental, health and safety laws, and related claims, and failure to comply with these laws and regulations could expose us to significant liabilities, which could materially adversely affect our results of operations.

Costs of compliance with regional, national, state, and local existing and future environmental, health and safety laws, and regulations could adversely affect our cash flow and results of operations. We are required to comply with numerous environmental laws and regulations and to obtain numerous governmental permits in order to operate our facilities and in connection with the design, development, manufacture, and transport of our products and the storage, use, handling, and disposal of hazardous substances, including environmental, health and safety laws, regulations and permits governing air emissions.emissions or water usage and disposal. We may incur significant additional costs to comply with these requirements.requirements, which are becoming stringent in a progressive manner. If we fail to comply with these current and new requirements, we could be subject to civil or criminal liability, damages and fines, require substantial capital investment to remedy non-compliance, and our operations could be curtailed, suspended, or shutdown. In addition, certain foreign laws and regulations may affect our ability to export products outside of the United States. Existing environmental, health and safety laws, and regulations could be revised or reinterpreted and new laws and regulations could be adopted or become applicable to us or our products, and future changes in environmental, health and safety laws, and regulations could occur. These factors may materially increase the amount we must invest to bring our processes into compliance and impose additional expense on our operations.

Among the changes to environmental laws and regulations that could occur is the adoption of regulatory frameworks to reduce greenhouse gas emissions, which a number of countries, particularly in the European Union, have adopted, or are considering adopting, including the 2015 Paris Agreement on climate change.Climate Change. These include adoption of cap and trade regimes, carbon taxes, restrictive permitting, increased efficiency standards, and incentives or mandates for renewable energy, any of which could increase the costs of manufacturing our products and increase our compliance costs, and/or reduce demand for our products from our customers in the energy industry, all of which could materially adversely affect our business and results of operations.

In addition, private lawsuits, including claims for remediation of contamination, personal injury or property damage, or actions by regional, national, state and local regulatory agencies, including enforcement or cost-recovery actions, may materially increase our

costs. Certain environmental laws make us potentially liable on a joint and several basis for the remediation of contamination at or emanating from properties or facilities that we currently or formerly owned or operated or properties to which we arranged for the disposal of hazardous substances. Such liability may require us to pay more than our fair share and could require us to address contamination caused by others. For example, the site of our East Providence facility contains certain levels of contamination caused by prior third-party activities on and near the site. Such contamination remains in place under a state-approved deed restriction, and we are required to comply with such deed restriction and the accompanying soil management plan. In general, the deed restriction prohibits the residential use of the property and the use of groundwater as potable water, and requires the maintenance of engineering controls and annual inspections to help prevent exposure to contaminated soils. The soil management plan requires us to notify the state environmental agency with respect to any soil excavation, stockpiling, sampling, and off-site disposal of excavated soil. Although we have not had to make material expenditures to satisfy these requirements to date, in the future, we may incur additional

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costs to comply with these requirements and failure to do so could disrupt the operation of our facility or could subject us to liability for environmental remediation. We may incur liability relating to the remediation of contamination, including contamination we did not cause. Furthermore, ethanol, one of the materials that we handle in large quantities in our manufacturing process is subject to additional laws and regulations including those administered by the U.S. Alcohol and Tobacco Tax and Trade Bureau. While we seek to comply with the stringent requirements of these laws and regulations, these laws and regulations are complex and are subject to interpretation. Any changes in these laws or regulations or any interpretation thereof, or changes in our manufacturing processes may require us to request changes to our existing permits or obtain new permits. Any requests to change our existing permits or obtain new permits may be delayed or denied and may require us to modify our manufacturing processes, which could be costly and time consuming and could adversely affect our business and results of operations.

We may not be able to obtain or maintain, from time to time, all required environmental regulatory approvals. A delay in obtaining any required environmental regulatory approvals or failure to obtain and comply with them could materially adversely affect our business and results of operations.

Failure by us to develop, maintain and strengthen strategic relationships with industry leaders to commercialize our products, particularly in the building materials market, may adversely affect our results of operations and our ability to grow our business.

Our business strategy requires us to align the design and performance attributes of our products to the evolving needs of the market. To facilitate this process, we have sought out partnerships and relationships with industry leaders in order to assist in the development and commercialization of our products. We face competition from other manufacturers of insulation in seeking out and entering into such partnerships and relationships with industry leaders in our target markets and we may therefore not be successful in establishing strategic relationships in those markets.

In the building materials market, we have entered into a supply agreement and a side agreement (together, the supply agreement) with BASF Polyeurathanes GmbH (BASF) and a joint development agreement with BASF SE. Pursuant to the supply agreement, we will sell exclusively to BASF our Spaceloft A2 product at annual volumes to be specified by BASF, subject to certain volume limits. The joint development agreement is designed to facilitate the collaboration between the parties on the development and commercialization of new products.

In addition to the customary terms associated with supply agreements, in support of our capacity expansion plan, process optimization projects, and research and development activities, BASF, in its sole discretion, may make advances, or prepayments, to us in the aggregate amount of up to $22 million during the term of the Supply Agreement.BASF has agreed to make a prepayment in the amount of $5 million to us in two installments in 2018. We have secured our obligation to repay the prepayment with a first priority security interest in real estate, machinery and equipment located at our existing manufacturing facility in East Providence, Rhode Island. Additionally, we have granted non-exclusive licenses to our subsidiaries under our intellectual property as necessary to operate such machinery and equipment.

After January 1, 2019, we will credit 25.3% of any amounts that we invoice for Spaceloft A2 product sold to BASF against the outstanding balance of the 2018 prepayment, if any, with such credits limited to a specified annual amount. BASF has no obligation to purchase Product under the supply agreement. If any of the 2018 prepayment remains uncredited as of December 31, 2021, BASF may request that we repay the uncredited amount to BASF. The amounts and terms of additional prepayment installments, if any, are subject to further negotiation between us and BASF.

Although BASF has placed orders for product under the supply agreement, there can be no assurance that BASF will ever be a significant customer for our products. Furthermore, there can be no assurance that we or BASF will be able to perform under the supply agreement or the joint development agreement or achieve our or its respective goals with respect to the supply agreement, the joint development agreement or the broader relationship between us and BASF. In addition, our grant of a security interest to BASF may make it more difficult for us to pledge our assets to secure other obligations, including to potential lenders, and as a result may impede our ability to incur additional indebtedness in the future.

In the event that we are unable to develop products that meet market needs or maintain our relationship with BASF, we may be required to find less prominent partners in the building materials market and we may be less able or unable to successfully penetrate that market. As a result of any of the above, we may lessen or lose our ability to grow our business in the building materials market which could adversely affect our business, financial condition and results of operations, including impairing our profitability.

We have entered into and may enter into future agreements that may limit our ability to broadly market our products or could involve future obligations, which could make it more difficult for us to commercialize certain of our products and negatively affect our business and results of operations.

We have a joint development agreement with BASF to develop products in the building materials market. In order to develop and commercialize our products, we may enter into additional joint development agreements or commercial arrangements. We cannot be certain that any products will be successfully developed under any such agreement or, even if developed, that they will be successfully produced or commercialized. These agreements may contain exclusivity, ownership and other terms that may limit our ability to commercialize any products or technology developed in connection with such agreements, including in ways that we do not envision at the time of entering into the agreement. In addition, these agreements may not obligate either party to make any purchases and may contain technical specifications that must be achieved to the satisfaction of our partner, which we cannot be certain we will be able to achieve. If our ability to commercialize products or technology developed in connection with these agreements is limited or if we fail to achieve the technical specifications that may be required, then our business, financial condition and results of operations could be materially adversely affected.

If we do not continue to develop and maintain distribution channels for our products and to meet our customers’ demand for our products, our results of operations could be adversely affected.

For a significant portion of our revenues, we rely on sales to distributors who then sell our products to end-users in our target markets. Our success depends, in part, on our maintaining satisfactory relationships with these distributors. Our distributors require us to meet expectations of delivery, quality and pricing of our products, at both the distribution channel level and at the level of the end-user of our products. If we fail to meet expected standards, our revenues would decline and this could materially adversely affect our business, results of operations and financial condition. In addition, we have been unable at times to produce sufficient amounts of our products to meet demand from our customers and we may not be able to avoid capacity constraints in the future if demand exceeds our expectations or we fail to expand the capacity of our existing East Providence, Rhode Island manufacturing facility or bring into operation as planned the second manufacturing facility to be located in Statesboro, Georgia. If we are unable to deliver our products within such short timeframes, we may be at risk of losing direct or end-use customers. Accordingly, shortfalls in sales could materially adversely affect our business and results of operations.

The qualification process for our products can be lengthy and unpredictable, potentially delaying adoption of our products and causing us to incur significant expense potentially without recovery.

Qualification of our products by many of our direct and end-use customers can be lengthy and unpredictable and many of these direct and end-use customers have extended budgeting and procurement processes. This extended sales process requires the dedication of significant time by our personnel and our use of significant financial resources, with no certainty of success or recovery of our related expenses. Furthermore, even after an extensive qualification process, our products may fail to meet the standards sought by our end-use customers and may not be qualified for use by such end-use customers. Additionally, our continued process improvements and cost-reduction efforts may require us or the end-users to re-qualify our products. Failure to qualify or re-qualify our products may result in us losing such companies as end-users of our products, which would cause a decrease in our revenue or revenue growth rate either of which could materially adversely affect our business and results of operations.

Our revenue may fluctuate, which may result in a high degree of variability in our results of operations and make it difficult for us to plan based on our future outlook and to forecast our future performance.

Our revenue may fluctuate from period to period due to a wide variety of factors. Since we rely on sales to a limited number of direct customers and end-use customers, changes in demand from one or more direct customers or end-users can significantly impact our revenue from period to period. In addition, the sales cycles for our products, including their qualification for use, are long and can result in unpredictability in our revenues. We expect to have an increasing percentage of our products sold for use in capital projects, which orders tend to be larger and more sporadic, that will further increase this unpredictability and the difficulty for us in forecasting quarterly or annual performance. Because of these factors, we have a limited basis on which to predict our quarterly revenue. Our profitability from period-to-period may also vary due to the mix of products that we sell in different periods. These factors may result in a high degree of variability in our results of operations and will make it difficult for us to accurately evaluate and plan based on our future outlook and to forecast quarterly or annual performance.

Our results of operations could be materially adversely affected if our operating expenses incurred do not correspond with the timing of our revenues.

Most of our operating expenses, such as manufacturing facility expenses, employee compensation and research expenses, are either relatively fixed in the short-term or incurred in advance of sales. In addition, our spending levels are based in part on our expectations regarding future revenues. As a result, if revenues for a particular quarter are below expectations, we may not be able to proportionately reduce operating expenses for that quarter. Our reliance on sales to a limited number of direct customers and end-use customers, the length of our sales cycles and the potentially increasing percentage of our products sold for use in capital projects each can cause sporadic demand for our products which would limit our ability to predict future sales. This limitation could result in our being unable to reduce spending quickly enough to compensate for reductions in sales and could therefore adversely affect our results of operations for any particular operating period.

We are exposed to the credit risk of some of our direct customers, including distributors, contractors and OEMs, which subjects us to the risk of non-payment for our products.

We distribute our products through a network of distributors, contractors and OEMs, some of which may not be well-capitalized and may be of a lower credit quality. This direct customer network subjects us to the risk of non-payment for our products. During 2017, we wrote off $0.5 million in accounts receivable due to non-payment of amounts due by a single customer. In addition, during periods of economic downturn in the global economy, our exposure to credit risks from our direct customers may increase, and our efforts to monitor and mitigate the associated risks may not be effective. In the event of non-payment by one or more of our direct customers, our business, financial condition and results of operations could be materially adversely affected.

Our working capital requirements involve estimates based on demand and production expectations and may decrease or increase beyond those currently anticipated, which could materially harm our results of operations and financial condition.

In order to fulfill the product delivery requirements of our direct and end-use customers, we plan for working capital needs in advance of customer orders. As a result, we base our funding and inventory decisions on estimates of future demand. If demand for our products does not increase as quickly as we have estimated or drops off sharply, our inventory and expenses could rise, and our business and results of operations could suffer. Alternatively, if we experience sales in excess of our estimates, our working capital needs may be higher than those currently anticipated. Our ability to meet this excess customer demand depends on our ability to arrange for additional financing for any ongoing working capital shortages, since it is likely that cash flow from sales will lag behind these investment requirements. In addition, we plan to increase our inventory in the longer term in order to meet our expected future demand. This would result in an increase in our working capital requirements that could harm our results of operations and financial condition.

Breakdowns, security breaches, loss of data, and other disruptions of our information technology systems could compromise sensitive information related to our business, prevent us from accessing critical information, and expose us to liability, which would cause our business and reputation to suffer.

In the ordinary course of our business, we collect and store sensitive data, including intellectual property, our proprietary business information and that of our suppliers, customers and business partners, and personally identifiable information about our employees.employees and business contacts. We manage and maintain our applications and data utilizing on-site and off-site systems. These applications and data encompass a wide variety of business criticalbusiness-critical information including research and development information, commercial information, and business and financial information. We face four primary risks relative to protecting this critical information: loss of access; inappropriate or unauthorized disclosure; inappropriate or unauthorized modification; and inadequate monitoring of our controls over the first three risks.

The secure processing, storage, maintenance, and transmission of this critical information is vital to our operations and business strategy, and we devote resources to protecting such information. Although we take measures to protect sensitive information from unauthorized access or disclosure, our information technology and infrastructure may be vulnerable to breakdowns, attacks by hackers, viruses, breaches or interruptions due to employee error, malfeasance or other disruptions, faulty password management or lapses in compliance with privacy and security mandates. Any such virus, breakdown, attack, breach, or interruption could compromise our networks and the information stored there could be accessed by unauthorized parties, publicly disclosed, lost, or stolen. Third parties may attempt to fraudulently induce employees or other persons into disclosing usernames, passwords or other sensitive information, which may in turn be used to access our information systems, commit identity theft or carry out other unauthorized or illegal activities. Any such breach could compromise our networks and the information stored there could be accessed, publicly disclosed, lost or stolen. We engage third-party vendors and service providers to store and otherwise process some of our data, including sensitive and personal information. Our vendors and service providers may also be the targets of the risks described above, including cyberattacks, ransomware, malicious software, phishing schemes, and fraud. From time to time, we get notifications that such vendors experienced cyber security breaches. For example, in 2021, we were notified by a third-party vendor that it had experienced a ransomware attack and some of our technical information may have been inappropriately disclosed. While we have no reason to believe that significant or sensitive information was compromised in such breach, if that were to occur, our ability to operate in a competitive manner would be significantly affected in an adverse manner. Our ability to monitor our vendors and service providers’ data security is limited, and, in any event, third parties may be able to circumvent those security measures, resulting in the unauthorized access to, misuse, disclosure, loss or destruction of our data, including sensitive and personal information, and disruption of our or third-party service providers’ systems. We and our third-party service providers may face difficulties in identifying, or promptly responding to, potential security breaches and other instances of unauthorized access to, or disclosure or other loss of, information. Any hacking or other attack on our or our third-party service providers’ or vendors’ systems, and any unauthorized access to, or disclosure or other loss of, information suffered by us or our third-party service providers or vendors, or the perception that any of these have occurred, could result in legal claims or proceedings, loss of intellectual property, liability under laws that protect the privacy of personal information, negative publicity, disruption of our operations and damage to our reputation, which could divert our management’s attention from the operation of our business and materially and adversely affect our business, revenues and competitive position. Moreover, we may need to increase our efforts to train our personnel to detect and defend against cyber- or phishing-attacks, which are becoming more sophisticated and frequent, and we may need to implement additional protective measures to reduce the risk of potential security breaches, which could cause us to incur significant expenses. Recently, Russian ransomware gangs have threatened to increase hacking activity against critical infrastructure of any nation or organization that retaliates against Moscow for its invasion of Ukraine.  Any such increase in such attacks on our third-party provider or other systems could adversely affect our network systems or other operations.   We have measures in place that are designed to detect and respond to such security incidents and breaches of privacy and security mandates, but there can be no assurance that our management or diligence efforts will prevent or detect such breakdowns or breaches in our systems. systems, if at all.

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Any such access, disclosuresecurity breach or other loss of informationinterruption, as well as any action by us or our employees or contractors that might be inconsistent with the rapidly evolving data privacy and security laws and regulations applicable within the United States and elsewhere where we conduct business, could result in legal claimsenforcement actions by U.S. states, the U.S. federal government or proceedings,foreign governments, liability or sanctions under data privacy laws that protect personally identifiable information, regulatory penalties, other legal proceedings such as but not limited to private litigation, the privacyincurrence of personal information or other laws, government enforcement actionssignificant remediation costs, disruptions to our development programs, business operations and regulatory penalties. Unauthorized access, loss or disseminationcollaborations, diversion of management efforts and damage to our reputation, which could also disrupt our operations, customer support services, research and development activities, capture of company financial information, various general and administrative aspects ofharm our business and damageoperations. Because of the rapidly moving nature of technology and the increasing sophistication of cybersecurity threats, our reputation,measures to prevent, respond to and minimize such risks may be unsuccessful.

In addition, our insurance may be insufficient to cover our losses resulting from cyber-attacks (including ransomware), breaches, or other interruptions, and any incidents may result in loss of, whichor increased costs of, such insurance. The successful assertion of one or more large claims against us that exceed available insurance coverage, the occurrence of changes in our insurance policies, including premium increases or the imposition of large deductible or co-insurance requirements, or denials of coverage, could adversely affecthave a material adverse effect on our business.business, including our financial condition, results of operations and reputation.

Our contracts with U.S. government agencies may subject us to audits, criminal penalties, sanctions, and other expenses and fines.

We perform contract research services for U.S. government agencies and our products are sold to customers that may incorporate them into government projects. U.S. government agencies, including the Defense Contract Audit Agency and the Department of Labor, routinely audit government contractors. These agencies review a contractor’s compliance with contract terms and conditions, performance under its contracts, cost structure and compliance with applicable laws, regulations and standards. The U.S. government also may review the adequacy of a contractor’s systems and policies, including a contractor’s purchasing, property, estimating, billing, accounting, compensation and management information systems. Any costs found to be overcharged or improperly allocated to a specific contract or any amounts improperly billed or charged for products or services will be subject to reimbursement to the government. As a government contractor, we are required to disclose to the U.S. government credible evidence of certain violations of law and contract overpayments. If we are found to have participated in improper or illegal activities, we may be subject to civil and criminal penalties and administrative sanctions, including termination of contracts, forfeiture of profits, suspension of payments, fines and suspension or prohibition from doing business with the U.S. government. Any negative publicity related to such contracts, regardless of the accuracy of such publicity, may adversely affect our business or reputation.

Our contracts with U.S. government agencies may not be funded by future appropriations and are subject to modification or termination at any time prior to their completion.

Our contracts with U.S. government agencies are subject to the availability of appropriated funds. The U.S. government funds our contract research work through a variety of funding programs that rely on monies appropriated by Congress. At any point, the availability of funding could change, thus reducing the opportunities for new or continued revenues to us from government contract work. Revenue from contracts with U.S. government agencies constituted 2% of our total revenue in each of 2017, 2016 and 2015, respectively. We expect that our revenue under such contracts will decline due to the recent trend toward tightening of federal spending guidelines and programs.

In addition, under our contracts, the U.S. government generally has the right not to exercise options to extend or expand our contracts and may modify, curtail or terminate the contracts at its convenience. Our government customers may not renew our existing contracts after the conclusion of their terms and we may not be able to enter into new contracts with U.S. government agencies. Any decision by the U.S. government not to exercise contract options or to modify, curtail or terminate our contracts or not to renew our contracts or enter into new contracts with us would adversely affect our revenues.

Our revolving credit facility contains financial and operating restrictions that may limit our access to credit. In addition, our revolving credit facility expires on April 28, 2018 and we may not be able to renew, extend or replace the expiring facility. If we fail to comply with covenants in our revolving credit facility or if facility is terminated, we may be required to repay our indebtedness thereunder, which may have an adverse effect on our liquidity.

Provisions governing our revolving credit facility impose restrictions on our ability to operate, including, for some of the agreements and instruments, but not for others, our ability to:

Our revolving credit facility also contains other customary covenants. We may not be able to comply with these covenants in the future. Our failure to comply with these covenants may result in the declaration of an event of default and could cause us to be unable to borrow funds under our revolving credit facility. In addition to preventing additional borrowings under our revolving credit facility, an event of default, if not cured or waived, may result in the acceleration of the maturity of indebtedness outstanding under the revolving credit facility, which would require us to pay all amounts outstanding. Such an event may also lead our lender to exercise its security interest in our assets, including all of our real property and equipment at our East Providence facility. If an event of default occurs, we may not be able to cure it within any applicable cure period, if at all. If the maturity of our indebtedness is accelerated, we may not have sufficient funds available for repayment or we may not have the ability to borrow or obtain sufficient funds to replace the accelerated indebtedness on terms acceptable to us, or at all.

If we lose key personnel upon whom we are dependent, or if we are unable to successfully recruit and retain skilled employees, we may not be able to manage our operations and meet our strategic objectives.

Our continued success depends to a considerable degree upon the continued services of a small number of our employees with critical knowledge of our products, our manufacturing process, our intellectual property, our customers and our global operations. The loss or unavailability of any of these individuals could harm our ability to execute our business plan, maintain important business relationships and complete certain product development initiatives, which could harm our business. In the event that any of these key individuals leave their employment with us or take new employment with a competitor, our business and results of operations could be materially adversely affected. In addition, our continued success depends upon the availability, contributions, vision, skills, experience and effort of our senior management, financial, sales and marketing, engineering and production teams. We do not maintain “key person” insurance on any of our employees. We have entered into employment agreements with certain members of our senior management team, but none of these agreements guarantee the services of the individual for a specified period of time. All of the agreements with members of our senior management team provide that employment is at-will and may be terminated by the employee at any time and without notice.

Although we do not have any reason to believe that we may lose the services of any our employees with critical knowledge of our products, our manufacturing processes, our customers and our global operations or any of our senior management, financial, sales and marketing, engineering and production teams in the foreseeable future, the loss of the services of any of these individuals might impede our operations or the achievement of our strategic and financial objectives. The loss or interruption of the service of any of these individuals or our inability to attract or retain other qualified personnel or advisors could have a material adverse effect on our business, financial condition and results of operations and could significantly reduce our ability to manage our operations and implement our strategy.

Our ability to use our net operating loss carryforwards may be subject to limitation, which could result in a higher effective tax rate and adversely affect our financial condition and results of operations.

During 2014, we performed analyses pursuant to Section 382 of the Internal Revenue Code of 1986, as amended, or the Internal Revenue Code, as well as similar state provisions, in order to determine whether any limitations might exist on the utilization of net operating losses and other tax attributes. Generally, a change of more than 50% in the ownership of a company’s stock, by value, over a three yearthree-year period constitutes an ownership change for U.S. federal income tax purposes. An ownership change may limit a company’s ability to use its net operating loss carryforwards attributable to the period prior to such change. Based on these analyses, we determined that it is more likely than not that an ownership change occurred on June 18, 2014 upon the closing of our IPO, resulting in an annual limitation on the use of our net operating losses and other tax attributes as of such date. As a result, our prior net operating losses were limited to $155.2 million, including built-in gains of $42.0 million at the date of that ownership change. The use of our net operating loss carryforwards may be restricted further in the event of any future changes in our ownership.ownership, including with respect to the 2022 Offering and conversion of the convertible notes issued in 2022.

WeTrends in adoption of cathode chemistries may not be able to successfully develop and introduce new products in a timely manner at competitive prices, which would limit our ability to grow and maintain our competitive position and could adversely affect our financial conditions, resultsthe adoption of operations and cash flow.

Our growth depends, in part, on continued sales of existing products, including by improving the performance of existing products, as well as the successful development and introduction of new products, which face the uncertainty of customer acceptance and reaction from competitors. New product development requires considerable resources and attention that may shift our focus from and may disrupt our current operations, givensilicon-rich carbon aerogels that we have fewer resources than manyare developing for use in anodes.

Success in adoption of our competitors. We may not be ablesilicon rich anode materials that we are developing for use in anodes depends on the need for matching cathode chemistries requiring high anode performance. Cathodes typically comprise oxides of metals such as nickel, manganese, aluminum and cobalt. One current trend is towards developing a higher nickel and lower (or no) cobalt-based cathode. Such cathodes require a matching higher performance anode like those manufactured with our silicon-rich carbon aerogel materials. Another trend is to sustainably manufacture new products with attractive marginsuse lower capacity, but safer cathode chemistries such as lithium iron phosphate (LFP). Certain battery manufacturers and we may experience higher yield losses than expected. Any delay in the development or launch of a new product could result in our not being the firstautomotive OEMs have already brought vehicles to market, which could compromise our competitive position. Even if we manage to develop and introduce new products, such products may not address market needs or otherwise compete with third party products. Even if our new products are adopted by the market wewith LFP cathodes. While vehicles with LFP cathodes may not achievehave lower energy densities leading to lower driving ranges, they are safer and have lower costs. If mass-market adoption of lower performance chemistries such as LFP continues, the growth in revenue that we expect from such new products anddemand for higher performing anodes including those containing our investment in these efforts may notsilicon-rich carbon aerogel materials will be proportionalreduced or limited to higher end vehicles, thus limiting our expected or actual revenue growth. If we are unable to develop and introduce new products in a cost-effective manner or otherwise manage effectively the operations related to new products, our results of operations and financial condition could be adversely impacted.market participation.

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Risks Related to Our Intellectual Property

Our inability to protect our intellectual property rights could negatively affect our business and results of operations.

Our ability to compete effectively depends in part upon developing, maintaining and/or protecting intellectual property rights relevant to our aerogel product forms, applications, manufacturing technologies, and brand names. We rely principally on a combination of patent protection, trade secret laws, confidentiality and nondisclosure agreements, trademark registrations, common

law rights, and licensing arrangements to establish and protect the intellectual property rights relevant to our business. However, these measures may not be adequate in every given case to permit us to gain or keep any competitive advantage, particularly in those countries where the laws do not protect our proprietary rights as fully as or where the enforcement tools are weaker or less effective than those in the United States. In particular, since aerogels were developed approximately 80 years ago, there has been a wide range of research, development and publication related to aerogels, which makes it difficult to establish intellectual property rights to many key elements of aerogel technology and to obtain patent protection. Accordingly, much of the general technology that we use in our manufacture of aerogel blankets is not protected by patents.

Where we consider it appropriate, our strategy is to seek patent protection in the United States and other countries on technologies used in or relating to our aerogel product forms, applications and manufacturing technologies. As of December 31, 2017,2021, we had 3963 issued U.S. patents and 68130 issued foreign patents, including threeeight U.S. patents and 1828 foreign patents that we co-own with third parties. The issuance of a patent is not conclusive as to its scope, validity or enforceability. Thus, any patent held by us or to be issued to us from a pending patent application, could be challenged, invalidated or held unenforceable in litigation or proceedings before the U.S. Patent and Trademark Office, or USPTO and/or other patent tribunals.tribunals in the United States or in foreign jurisdictions. Third parties could develop technologies that circumvent the patent protection we have secured. No consistent policy regarding the breadth of patent claims has emerged to date in the United States and the landscape could become more uncertain in view of future rule changes by the USPTO, the introduction of patent reform legislation and decisions in patent law cases by the federal courts including the United States Supreme Court.

The patent landscape outside of the United States is even less predictable. As a result, the validity and enforceability of patents cannot be predicted with certainty. For example, we are aware of competitors that manufacture and market aerogel insulation products in China, where it may be difficult for us to enforce our intellectual property rights against these or other competitors.

In May 2016, we filed a complaint for patent infringement against Nano Tech Co., Ltd. (Nano), and Guangdong Alison Hi-Tech.Hi Tech., Ltd., (Alison) which we refer to collectively as the Respondents, in the United States International Trade Commission, or ITC. In addition to Respondents’ contention atthe ITC complaint, we alleged that these two China-based companies have engaged and are engaging in unfair trade practices by importing aerogel products in the United States that infringe, and/or are manufactured by processes that infringe, several of our patents in violation of Section 337 of the Tariff Act of 1930. In the ITC complaint, we sought exclusion orders from the ITC that direct the patents we asserted there are invalid, Alison also filed petitions with United States PatentCustoms and Trademark Office requesting Inter-Partes ReviewBorder Protection to cancel certain claims in three of our manufacturing process patents and a product patent. A three-member panel of Administrative Patent Judges at the USPTO denied all of Alison’s petitions to institute Inter-Partes Review challenging the validity of Aspen patents. Alison also filed similar requests with the Chinese Patent Office (SIPO) seeking to invalidate two of our Chinese manufacturing process patents and two of our Chinese product patents. After the conclusion of the oral proceedings and before any decision issued by the SIPO, Alison withdrew all of its requests for invalidation of our Chinese patents. In September 2017, the Administrative Law Judge (ALJ) presiding over the ITC investigation issued an Initial Determination finding that Alison and Nano infringed our patents relating to aerogel insulation and/or methods of manufacturing aerogel insulation. As part of the Initial Determination, the ALJ found that Alison and Nano infringed all of the patent claims asserted against each of them across the three asserted patents, and that Alison and Nano failed to prove that the asserted claims were invalid. The ALJ also recommended a limited exclusion order as a remedy to preventstop the importation of these infringing aerogel products manufactured by Respondents into the United States.products. In February 2018, the ITC issued its final determination confirming the ALJ’s infringementprevious initial determination that Nano and validity determinationsAlison had infringed asserted Aspen patents and that they have not proven the patents are invalid except with respect to one dependent product claim, wherewhich the ITC found that the claim was not infringed. The ITC also revised someaffirmed that Alison and Nano each violated Section 337 of the ALJ’s claim constructions. In addition, the ITCTariff Act and issued a limited exclusion order prohibiting importation of infringing aerogel insulation products manufactured by Alison and Nano. The Respondents may appealAlison unsuccessfully appealed the finalITC determination with respect to a product patent to the U.S. CourtCAFC, which affirmed the validity of Appeals forAspen’s patent. The exclusion order, which is enforced by the Federal Circuit.United States Customs and Border Protection, is currently in effect. Additionally, the USPTO denied Alison’s requests to invalidate the claims of four of Aspen’s patents in Inter-Partes Review. Alison also filed multiple similar requests with the SIPO, seeking to invalidate our Chinese manufacturing process patents and two of our Chinese product patents. With respect to one of those request, not withdrawn previously by Alison, the PRB, issued a decision upholding the validity of Aspen’s issued patent as amended in the proceedings. Alison has appealed the PRB’s decision to the Beijing IP court. After the oral hearing at the Beijing IP court, we are awaiting the decision by the court. Nano has also filed a request seeking invalidation of a product patent at PRB of SIPO on which oral hearing took place in July 2019. After the oral hearing, Nano withdrew its invalidation request. On September 23, 2019, Alison filed yet another request to invalidate the same patent, whose prior validity opinion by PRB is currently on appeal at the Beijing IP Court. After conducting an oral hearing, PRB issued a decision on January 23, 2020 denying Alison’s latest invalidation request of this patent.

WeIn April 2016, we also filed a patent infringement suit in April 2016 at the District Court in Mannheim, Germany (Mannheim court), against the RespondentsNano, Alison and two European distributors. During 2016, weresellers asserting their infringement of one of our German patents. We subsequently asserted infringement of another three patents against Nano, Alison and a European reseller of Alison’s products at the Mannheim court. We have since settled with one European distributorreseller in exchange for a commitment not to procure infringing products and cooperation with our case.

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Additionally, a reseller of Nano’s products in Taiwan challenged the validity of one of our patents in Taiwan in 2018. After careful review of our written response, the Taiwanese patent office has determined the patent as valid and dismissed the challenge in December 2018. In 2018, LG Chem Ltd. challenged the validity of one of our patents in Korea at the IPTAB of the Korean Intellectual Property Office. After conducting an oral hearing, the IPTAB issued a series of judgments by acknowledgement (German, Anerkenntnisurteil) findingdecision on November 30, 2019 upholding claims related to aerogel sheets incorporating fibers and invalidating claims for aerogel sheets not incorporating fibers. On January 14, 2021, the second reseller, Hiltex Techniche Weefsels b.v. (Hiltex), liable for infringement and also issued injunctions against Hiltex. The judgments resulted from a settlement agreement in which Hiltex agreed not to resell infringing products in Europe where at least oneKorean Patent Court confirmed the validity of the asserted patents are active. Nano initiated nullity actionsclaims related to aerogel sheets incorporating fibers.

Due to their nature, it is difficult to predict the outcome or the costs involved in German Federal Court against threeany litigation or administrative proceedings, including any appeals process. Furthermore, the counter-parties in these proceedings may have significant resources and interest to litigate and therefore, these litigation matters could be protracted and may ultimately involve significant legal expenses. In addition to the foregoing, we have been and may be from time to time a party to other legal proceedings that arise in the ordinary course of our manufacturing process patents in Germany. Alison likewise filed an opposition to one of the asserted patents at the European Patent Office (“EPO”) and also initiated nullity action against two other patents. Nano also filed an opposition against the same patent at the EPO. The litigation against the defendants, Alison and Nano, is ongoing. See “Risk Factors —We have initiated intellectual property litigation that will be costly, and could limit or invalidate our intellectual property rights, divert time and efforts away from business operations, require us to pay damages and/or costs and expenses and/or otherwise have an adverse material impact on our business and we could become subject to additional intellectual property litigation in the future” below.other patent enforcement actions to assert our patent rights.

In addition, we may fail to apply for patents on important technologies or innovative products in a timely fashion, if at all, and our existing and future patents may not be sufficiently broad to prevent others from practicing our technologies or from developing competing products or technologies, in particular given the long history of aerogel development. Furthermore, third parties could practice our intellectual property rights in territories where we do not have patent protection.protection or where processes for remedies for infringement of intellectual property are unclear or still evolving. Such third parties may then try to import products made using our intellectual property rights into the United States or other countries. We may not be able to prevent such imports practically even if we obtain appropriate legal remedies. Our strategy is to seek registration of trademarks for our brands in many, but not all, of the jurisdictions in which we sell our products based on various factors, including

our sales volumes in the jurisdiction, our ability to enforce local laws, and cost. Our strategy may not be adequate to protect our brands in all circumstances, especially in foreign jurisdictions. In certain jurisdictions, third parties may seek to register trademarks on the names of our products and brands before we do, thus requiring us to change branding strategies or otherwise deal with the issue.

As of December 31, 2017,2021, we had 2345 pending U.S. patent applications and 71136 pending foreign patent applications, including one pending U.S. patent application and threefive foreign pending patent applications that we co-own with other third parties. Our pending patent applications are directed to various enabling technologies for the product forms, applications and manufacturing technologies that support our current business, as well as aspects of products under development or contemplated for the future. The issuance of patents from these applications involves complex legal and factual questions and, thus, we cannot provide assurance that any of our pending patent applications will result in the issuance of patents to us. The USPTO, relevant foreign patent offices and other relevant patent tribunals may deny or require significant narrowing of claims in our pending patent applications. Patents issued as a result of any of our pending patent applications may not cover our enabling technology and/or the products or processes that support our current or future business or afford us with significant commercial protection against others with similar technology. Proceedings before the USPTO could result in adverse decisions as to the priority of our inventions and the narrowing or invalidation of claims in issued patents. In addition, our pending patent applications filed in foreign countries are subject to laws, rules and procedures that differ from those of the United States, and thus foreign patent applications may not be granted even if counterpart United States patents are issued.

We have initiated intellectual property litigation that is and will continue to be costly, and could limit or invalidate our intellectual property rights, divert time and efforts away from business operations, require us to pay damages and/or costs and expenses and/or otherwise have ana material adverse impact on our business, and we could become subject to additional such intellectual property litigation in the future.

The success of our business is highly dependent on protecting our intellectual property rights. Unauthorized parties may attempt to copy or otherwise obtain and use our products and/or enabling technology. Policing the unauthorized use of our intellectual property rights is difficult and expensive, as is enforcing these rights against unauthorized use by others. Identifying unauthorized use of our intellectual property rights is difficult because we may be unable to monitor the technologies and/or materials being employed by other parties. The steps we have taken or will take may not prevent unauthorized use of our intellectual property rights, particularly in foreign countries where enforcement of intellectual property rights may be more difficult than in the United States.

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In May 2016, we filed a complaint for patent infringement against Nano Tech Co., Ltd. (Nano), and Guangdong Alison Hi-Tech.Hi Tech., Ltd., which we refer to collectively as the Respondents, (Alison) in the United States International Trade Commission. The ITC complaint alleged that these two China-based companies have engaged and are engaging in unfair trade practices by importing and selling aerogel products in the United States that infringe, and/Commission, or are manufactured by processes that infringe, several of our patents. In the ITC complaint, we sought exclusion orders from the ITC that direct the United States Customs and Border Protection to stop the importation of infringing products. In June 2016, the ITC instituted an investigation based on our complaint. In September 2017, the Administrative Law Judge (ALJ) presiding over the ITC investigation issued an Initial Determination finding that Alison and Nano infringed three of our patents relating to aerogel insulation and/or methods of manufacturing aerogel insulation. As part of the Initial Determination, the ALJ found that Alison and Nano infringed all the patent claims asserted against each of them and that Alison and Nano failed to prove that the asserted claims were invalid. The ALJ also recommended a limited exclusion order as a remedy to prevent the importation of infringing aerogel products into the United States.ITC. In February 2018, the ITC issued its final determination confirmingthat Nano and Alison had infringed asserted Aspen patents and that they have not proven the ALJ’s infringement and validity determinationspatents are invalid except with respect to one dependent product claim, wherewhich the ITC found that the claim was not infringed. The ITC also revised someaffirmed that Alison and Nano each violated Section 337 of the ALJ’s claim construction. In addition, the ITCTariff Act and issued a limited exclusion order prohibiting importation of infringing aerogel insulation products manufactured by Alison and Nano. The Respondents mayAlison’s appeal the final determinationwith respect to a product patent to the U.S.United States Court of Appeals for the Federal Circuit.Circuit (CAFC) was rejected, and resulted in CAFC affirming the validity of our patent. The exclusion order, which is enforced by the United States Customs and Border Protection, is currently in effect.

In additionAdditionally, the USPTO denied Alison’s requests to Respondents’ contention atinvalidate the ITC that theclaims of four of our patents we asserted there are invalid,in Inter-Partes Review. Alison also filed petitions with USPTO requesting Inter-Partes Review to cancel certain claims in three of Aspen’s manufacturing process patents and one product patent. A three-member panel of Administrative Patent Judges at the USPTO denied all of Alison’s petitions to institute Inter-Partes Review challenging the validity of these Aspen patents. Alison also filedmultiple similar requests with the Chinese Patent Office (“SIPO”)(SIPO), seeking to invalidate two of our Chinese manufacturing process patents and two of our Chinese product patents. With respect to one of those requests, not withdrawn previously by Alison, the Patent Review Board of SIPO (PRB), issued a decision upholding the validity of Aspen’s issued patent as amended in the proceedings. Alison has appealed the PRB’s decision to the Beijing IP court. On July 25, 2020, the Beijing IP court dismissed Alison’s appeal and upheld the validity of Aspen’s patent and we received this decision on September 15, 2020. Nano has also filed a request seeking invalidation of a product patent at SIPO. After the conclusion oforal hearing at PRB, Nano withdrew its invalidation request. On September 23, 2019, Alison filed yet another request to invalidate the oral proceedings and before any decision issuedsame patent, whose validity was previously confirmed by the SIPO, Alison withdrew all of its requests forPRB. On January 23, 2020 PRB denied Alison’s latest invalidation of our Chinese patents.request.

WeIn April 2016, we also filed a patent infringement suit in April 2016 at the District Court in Mannheim, Germany (Mannheim court), against the RespondentsNano, Alison and two European distributors. During 2016, weresellers asserting their infringement of one of our German patents. We subsequently asserted infringement of another three patents against Nano, Alison and a European reseller of Alison’s products at the Mannheim court. We have since settled with one of the European distributorsreseller in exchange for a commitment not to procure infringing products and cooperation with our case. In January 2018, the court issued a series of judgments by acknowledgement (German, Anerkenntnisurteil“Anerkenntnisurteil”) finding the second reseller, Hiltex, Techniche Weefsels b.v. (Hiltex), liable for infringement and also issued injunctions against Hiltex. The judgments resulted from a settlement agreement in which Hiltex agreed not to resell the infringing products in Europe where at least one of the asserted patents are active. The litigationOn March 8, 2019, the Mannheim court issued two separate judgments in cases against Nano and Alison, remains ongoing. respectively. The Mannheim court determined that both Nano and Alison are infringing on Aspen’s EP1638750 (750 Patent) in connection with their respective products. The court also issued injunctions prohibiting the offer, putting on the market, using, importing or possessing the infringing products. The court found the defendants liable to us for damages since September 22, 2012. The court also ordered the defendants to provide information on the scope of the acts of infringement committed since August 22, 2012, and a recall of infringing products. The court ordered Nano and Alison to bear the costs of the legal proceedings and reimburse statutory attorneys’ costs and expenses to us, that exact amount of which is yet to be determined. Nano and Alison have appealed the judgments of the Mannheim court. Nano subsequently withdrew the appeal while Alison’s appeal is currently pending.

hasThe Mannheim court issued two decisions on December 23, 2019 finding that Alison infringed the 577 Patent and the 950 Patent and also issued injunctions prohibiting Alison from continuing infringement in connection with any aerogel sheets. The December 2019 decisions against Alison have now become final and binding. The Mannheim court issued two decisions on July 31, 2020 finding that Nano infringed each of the 577 Patent and the 950 Patent. In addition to granting other remedies, the court also issued injunctions prohibiting the offer, putting on the market, using, importing or possessing any aerogel sheets. After the passing of deadline to file appeals, these decisions have now become final.

Nano and Alison also initiated nullity actions in German Federal Patent Court in Munich against threeour asserted German patents. On September 25, 2018, the Federal Patent Court in Munich dismissed the challenge to the validity of our manufacturing process patents in Germany. 750 Patent which has subsequently become final. Nano and Alison likewisealso filed an opposition to one of the asserted patents at the EuropeanEPO. In December 2018, the opposition division of EPO determined the patent, EP2813338 (338 Patent), was invalid on formality grounds and decided to revoke it, which determination is currently under appeal at the EPO Board of appeals. On March 19 and 20, 2019 the German Federal Patent Office (EPO)Court in Munich (FPC) conducted oral proceedings and also initiatedvoided four claims in EP2415577 (577 Patent) and confirmed the validity of challenged claims in EP2422950 (950 Patent) within the scope of silica gels. These FPC judgments are now final and binding on the parties. Nano had filed another nullity action against two other patents.seeking to invalidate the remaining claims in the 577 Patent which action Nano subsequently failed to pursue. On June 17, 2020, Nano also filed an opposition againstto a recently issued Aspen Patent EP3120983B1, titled “Continuous Sheet of Gel Materials and Continuous sheet of Aerogel”.

Additionally, a reseller of Nano’s products in Taiwan challenged the same patent at the EPO. As Alison and Nano have already sought to invalidatevalidity of one of our patents in various jurisdictions, we expect defendantsTaiwan in 2018. After careful review of our written response, the Taiwanese patent office has determined the patent as valid and dismissed the challenge in December 2018. In 2018, LG Chem Ltd. challenged the validity of one of our patents in Korea at the IPTAB of the Korean Intellectual Property Office. After conducting an oral hearing, the IPTAB issued a decision on November 30, 2019, upholding claims related to bring similar actions in additional jurisdictions or against additional patents and that we will incur additional costsaerogel sheets incorporating fibers. On January 14, 2021 the Korean Patent Court confirmed the validity of the claims related to defend such actions. aerogel sheets incorporating fibers.

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Due to their nature, it is difficult to predict the outcome or the costs involved in any litigation or administrative proceeding.proceedings, including any appeals process. Furthermore, the defendantscounter parties in these proceedings may have significant resources and interest to litigate and therefore, thisthese litigation matters could be protracted and may ultimately involve significant legal expenses. In addition to the foregoing, we have been and may be from time to time party to other legal proceedings that arise in the ordinary course of business and to other patent enforcement actions to assert our patent rights.

Our continued commercial success will also depend in part upon not infringing the patents or violating other intellectual property rights of third parties. We are aware of patents and patent applications generally relating to aspects of our technologies filed by, and issued to, third parties. Our knowledge of the patent landscape with respect to the technologies currently embodied within our aerogel products and the technologies that we practice in manufacturing those products indicates that the third-party patent rights most relevant to our business are those owned by Cabot and licensed to us under the cross license agreement with Cabot. Nevertheless, we cannot determine with certainty whether patents or patent applications of other parties may materially affect our ability to conduct our business. There may be existing patents of which we are unaware that we may inadvertently infringe, resulting in claims against us or our customers. In recent years, Chinese, Japanese and South Korean entities have filed a significant number of patent applications related to aerogel products in both their home countries and in foreign countries. These patents in application areas of aerogels may make it more difficult for OEMs and end-useend-user customers in these countries to use our products in new and different applications, which in turn may limit our ability to penetrate new markets.

In the event that the manufacture, use and/or sale of our products or technologies is challenged, or if our product forms or technologies conflict with patent rights of others, or our operations conflict with trademark or similar rights of others, third parties could bring legal actions against us in the United States, Europe or other countries, claiming damages and seeking to enjoin the manufacturing and/or marketing of our products. In addition, it is not possible to predict with certainty what patent claims may arise from pending patent applications of third parties. In the United States, for example, patent prosecution can proceed in secret prior to issuance of a patent, provided such application is not filed in a foreign jurisdiction. For U.S. patent applications that are also filed in foreign jurisdictions, such patent applications will not be published until 18 months from the filing date of the application. As a result, third parties may be able to obtain patents with claims relating to our product forms, applications and/or manufacturing processes which they could attempt to assert against us or our end-users.

In the case of any of the above, litigation may be necessary to enforce, protect or defend our intellectual property rights or to determine the validity and scope of the intellectual property rights of others. Any such litigation, including our ongoing patent enforcement actions described above, could be unsuccessful, cause us to incur substantial costs, divert resources and the efforts of our personnel away from daily operations, harm our reputation, and/or result in the impairment of our intellectual property rights. In some cases, litigation may be threatened or brought by a patent holding company (otherwise known as non-practicing entities or patent “trolls”) or other adverse patent owner who has no relevant product revenues and against which our patents may provide little or no deterrence. If we are found to infringe any patents, regardless of whether litigation is brought against us by third parties or, as in the case of our ongoing patent enforcement actions described above, brought by us against third parties, we could be required to:

In the actions brought by us against third parties, including our ongoing patent enforcement actions described above, we may be required to pay costs and expenses of opposing parties, including attorney fees, if we lose.

If our competitors are able to use our technology without payment to us, our ability to compete effectively could be materially harmed. Our contracts generally indemnify our customers for third-party claims of intellectual property infringement related to the manufacture and use of our products, and typically up to the amount of the purchase price paid for the product, which could cause us to become involved, and subject to liability, in litigation between our customers and third parties. The expense of defending these claims may adversely affect our results of operations.

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Patents covering technologies that are similar or superior to our technologies may be developed or obtained by third parties. We may need to seek licenses to these technologies, which could limit our ability to manufacture our products and have a material adverse effect on our business and results of operations.

Competitors or other third parties may independently develop and obtain patents covering technologies that are similar or superior to the product forms, applications or manufacturing technologies that we employ. In such event, we may need to obtain licenses for these technologies. However, we may not be able to obtain licenses on reasonable terms, if at all, which could limit our ability to manufacture our current and/or future products and operate our business.

Our contracts with the U.S. government and other third parties could negatively affect our intellectual property rights.

To further our product development efforts, our scientists and engineers work closely with customers, the U.S. government, and other third parties to research and develop advancements in aerogel product forms, applications, and manufacturing technologies. We have entered into agreements with private third parties and have been awarded numerous research contracts with the U.S. government to independently or jointly research, design, and develop new devices and systems that incorporate aerogel material. We also expect to enter into similar private agreements and be awarded similar government contracts in the future. In some instances, the research and development activities that we conduct under contract with the U.S. government and/or with private third parties may produce intellectual property to which we may not have ownership or exclusive rights and will be unable to protect or monetize.

Moreover, when we develop new technologies using U.S. government funding, the government may obtain certain rights in any resulting patents, technical data, and/or other confidential and proprietary information, generally including, at a minimum, a non-exclusive license authorizing the U.S. government to use the invention, technical data, or software for non-commercial purposes. Federal government funding may limit when and how we can deploy our technology developed under those contracts. In addition, inventions must be reported promptly to the funding agencies, the federal funding must be disclosed in any resulting patent applications, and our rights in such inventions will normally be subject to government license rights, periodic post-contract utilization reporting, foreign manufacturing restrictions, and “march-in” rights. March-in rights refer to the right of the U.S. government to require us to grant a license to the technology to a responsible applicant or, if we refuse, the government may grant the license itself. The U.S. government may exercise its march-in rights if it determines that action is necessary because we fail to achieve practical application of any technology developed under contract with the government or because action is necessary to alleviate health or safety needs, to meet requirements of federal regulations, or to give preference to United States industry. The U.S. government may also have the right to disclose our confidential and proprietary information to third parties. In addition, failure to comply with all the government contract requirements may result in us losing the patent rights.

Our U.S. government-sponsored research contracts are also subject to audit and require that we provide regular written technical updates on a monthly, quarterly, or annual basis, and, at the conclusion of the research contract, a final report on the results of our technical research. Because these reports are generally available to the public, third parties may obtain some aspects of our confidential and proprietary information relating to our product forms, applications, and/or manufacturing processes. If we fail to provide these reports or to provide accurate and complete reports, the U.S. government could obtain rights to any intellectual property arising from the related research.

Furthermore, there could be disputes between us and a private third party as to the ownership rights to any inventions that we develop in collaboration with such third party. Any such dispute may cause us to incur substantial costs including potential license obligations, and could place a significant strain on our financial resources, divert the attention of management from our core business, and harm our reputation.

We rely on trade secrets to protect our technology, and our failure to obtain or maintain trade secret protection could materially adversely affect our competitive business position.

We rely in part on trade secret protection to protect confidential and proprietary information relating to our technology, particularly where we do not believe patent protection is appropriate or obtainable. We continue to develop and refine the manufacturing technologies used to produce our aerogel products and believe that we have already developed, and will continue to develop, significant know-how related to these technologies. However, trade secrets can be difficult to protect. We may not be able to maintain the secrecy of this information and competitors may develop or acquire equally or more valuable information related to the manufacture of comparable aerogel products. Our strategy for scale-up of commercial production will continue to require us to share confidential and proprietary information with the U.S. government and other third parties. While we take reasonable efforts to protect our trade secrets, our employees, consultants, contractors or scientific and other advisors, or those of our business partners, may intentionally or inadvertently disclose our confidential and proprietary information to competitors. Any enforcement of claims by us that a third party has obtained and is using our trade secrets is expensive, time consuming and uncertain. In addition, foreign courts are sometimes less willing than United States courts to protect trade secrets.

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We require all employees and consultants to execute confidentiality and/or nondisclosure agreements upon the commencement of an employment or consulting arrangement with us, which agreements generally require that all confidential and proprietary information developed by the individual or made known to the individual by us during the course of the individual’s relationship with us be kept confidential and not disclosed to third parties. These agreements further generally provide that inventions conceived by the individual in the course of rendering services to us will be our exclusive property. Nevertheless, these agreements may not be honored and our confidential and proprietary information may be disclosed, or these agreements may be unenforceable or difficult to enforce. We also require customers and vendors to execute confidentiality and/or nondisclosure agreements. However, we have not obtained such agreements from all of our customers and vendors. Moreover, some of our customers may be subject to laws and regulations that require them to disclose information that we would otherwise seek to keep confidential. Our confidential and proprietary information may be otherwise disclosed without our authorization or knowledge. Moreover, third parties could reverse engineer our manufacturing processes, independently develop substantially equivalent confidential and proprietary information or otherwise gain access to our trade secrets. Additionally, cyber security threats, especially originating from countries such as China, Russia, Iran, and North Korea as broadly reported in the media, pose a significant risk to maintaining control of our trade secrets. Failure to maintain trade secret protection could enable others to produce competing products and adversely affect our competitive business position.

Loss of the intellectual property rights that we license from Cabot Corporation would have a material adverse impact on our business.

We have licensed certain intellectual property rights from Cabot under a cross license agreement. These intellectual property rights have been critical to the manufacture of our existing products and may also be important to our research, development and manufacture of new products. Any loss of the intellectual property rights granted to us thereunder, including as a result of ineffective protection of such rights by Cabot, abandonment or expiration of the involved patents or a breach of or dispute under the agreement by either party would have a material adverse impact on our financial condition, results of operations and growth prospects, and might prevent us from continuing our business.

Risks Related to Our Data Privacy and Other Personal Information

We may be subject to, or may in the future become subject to, U.S. federal and state, and foreign laws and regulations imposing obligations on how we collect, use, disclose, store, and process personal information. Our actual or perceived failure to comply with such obligations could result in liability or reputational harm and could harm our business. Ensuring compliance with such laws could also impair our efforts to maintain and expand our customer base, and thereby decrease our revenue.

We are subject to data protection laws and regulations that address privacy and data security. The legislative and regulatory landscape for data protection continues to evolve, and in recent years there has been an increasing focus on privacy and data security issues. In the United States, numerous federal and state laws and regulations, including state data breach notification laws, state health information privacy laws and federal and state consumer protection laws govern the collection, use, disclosure and protection of health-related and other personal information. Failure to comply with data protection laws and regulations could result in government enforcement actions, which could include civil or criminal penalties, private litigation and/or adverse publicity and could negatively affect our operating results and business. For example, in January of 2020, the California Consumer Privacy Act, or CCPA, went into effect, which marked the first U.S. state to adopt comprehensive privacy legislation. The CCPA establishes a new privacy framework for covered businesses by creating an expanded definition of personal information, establishing new data privacy rights for California residents, and creating a new and potentially severe statutory damages framework for violations of the CCPA and for businesses that fail to implement reasonable security procedures and practices to prevent data breaches. Additionally, a new privacy law, the California Privacy Rights Act, or CPRA, was approved by California voters in November of 2020, and certain provisions are effective as of January 1, 2022, with full effectiveness as of 2023. The CPRA significantly modifies the CCPA, potentially resulting in further uncertainty, additional costs and expenses in an effort to comply and additional potential for harm and liability for failure to comply. Among other things, the CPRA established a new regulatory authority, the California Privacy Protection Agency, which is tasked with enacting new regulations under the CPRA and will have expensed enforcement authority. In addition, in 2021 both Virginia and Colorado enacted new data privacy laws which will take effect in 2023 that have similarities to the CCPA and CPRA, but also have significant differences, creating compliance challenges across different jurisdictions. Other states, including Massachusetts, are considering expansive data privacy laws.

Numerous other countries have, or are developing, laws governing the collection, use and transmission of personal information as well. EU member states and other jurisdictions have adopted data protection laws and regulations, which impose significant compliance obligations.

On May 25, 2018, the GDPR went into effect, implementing a broad data protection framework that expanded the scope of EU data protection law, including to non-EU entities that process, or control the processing of, personal data relating to individuals located in the EU, including clinical trial data. The GDPR sets out a number of requirements that must be complied with when handling the personal data of EU based data subjects, including: providing expanded disclosures about how their personal data will be used; higher standards for organizations to demonstrate that they have obtained valid consent or have another legal basis in place to justify their data processing activities; the obligation to appoint data protection officers in certain circumstances; new rights for individuals to be “forgotten” and

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rights to data portability, as well as enhanced current rights (e.g. access requests); the principal of accountability and demonstrating compliance through policies, procedures, training and audit; and a new mandatory data breach regime. In particular, medical or health data, genetic data and biometric data where the latter is used to uniquely identify an individual are all classified as “special category” data under the GDPR and afford greater protection and require additional compliance obligations. Further, EU member states have a broad right to impose additional conditions—including restrictions—on these data categories. This is because the GDPR allows EU member states to derogate from the requirements of the GDPR mainly in regard to specific processing situations (including special category data and processing for scientific or statistical purposes). For example, we are subject to the GDPR and the German federal data privacy law, the Bundesdatenschutzgesetz, and we are subject to the regulatory authority of the Baden-Württemberg data protection authority. As the EU states continue to reframe their national legislation to harmonize with the GDPR, we will need to monitor compliance with all relevant EU member states’ laws and regulations, including where permitted derogation from the GDPR are introduced.

We are also subject to evolving EU laws on data export, because we transfer data outside the EU to ourselves or third parties. The GDPR only permits exports of data outside the EU where there is a suitable data transfer solution in place to safeguard personal data (e.g. the EU Commission approved Standard Contractual Clauses). On July 16, 2020, the Court of Justice of the EU (CJEU) issued a landmark opinion in the case of Maximilian Schrems vs. Facebook (Case C-311/18) (Schrems II). This decision calls into question certain data transfer mechanisms as between the EU member states and the US. The CJEU is the highest court in Europe and the Schrems II decision heightens the burden on data importers to assess the impact of U.S. national security laws on their business. Future actions which may be initiated by EU data protection authorities are difficult to predict at the this time. Consequently, there is some risk of any data transfers from the EU being halted. If we have to rely on third parties to carry out services for us, including processing personal data on our behalf, we are required under GDPR to enter into contractual arrangements to help ensure that these third parties only process such data according to our instructions and have sufficient security measures in place. Any security breach or non-compliance with our contractual terms or breach of applicable law by such third parties could result in enforcement actions, litigation, fines and penalties or adverse publicity and could cause customers to lose trust in us, which would have an adverse impact on our reputation and business. Any contractual arrangements requiring the processing of personal data from the EU to us in the United States will require greater scrutiny and assessments as required under Schrems II and may have an adverse impact on cross-border transfers of personal data, or increase costs of compliance. The GDPR provides an enforcement authority to impose large penalties for noncompliance, including the potential for fines of up to €20 million or 4% of the annual global revenues of the noncompliant company, whichever is greater.

Applicable data privacy and data protection laws may conflict with each other, and by complying with the laws or regulations of one jurisdiction, we may find that we are violating the laws or regulations of another jurisdiction. Despite our efforts, we may not have fully complied in the past and may not in the future. If we become liable under laws or regulations applicable to us, we may be required to pay significant fines and penalties, our reputation may be harmed, and we may be forced to change the way we operate. That could require us to incur significant expenses, which could significantly affect our business.

The legislative and regulatory landscape for privacy and data security continues to evolve, and there has been an increasing focus on privacy and data security issues which may affect our business. Failure to comply with current and future laws and regulations could result in government enforcement actions (including the imposition of significant penalties), criminal and civil liability for us and our officers and directors, private litigation and/or adverse publicity that negatively affects our business.

Risks Related to Our Common Stock

We have incurred and will continue to incur increased costs and demands upon management as a result of complying with the laws and regulations affecting public companies in the United States, which may adversely affect our results of operations.

As a public company, and particularly now that we are no longer an emerging growth company as of December 31, 2019, we have incurred and will continue to incur significant legal, accounting and other expenses that we did not incur as a private company. The Sarbanes-Oxley Act of 2002, the Dodd-Frank Wall Street Reform and Consumer Protection Act, the listing requirements of The New York Stock Exchange and other applicable securities rules and regulations impose various requirements on public companies, including establishment and maintenance of effective disclosure and financial controls and corporate governance practices. Our management and other personnel will need to devote a substantial amount of time to these compliance initiatives. Moreover, these rules and regulations will increase our legal and financial compliance costs and will make some activities more time-consuming. We are subject to the reporting requirements of the Exchange Act that require us to file, among other things, quarterly reports on Form 10-Q and annual reports on Form 10-K. Under Section 302 of the Sarbanes-Oxley Act of 2002, or the Sarbanes-Oxley Act, as a part of each of these reports, our chief executive officer and chief financial officer are required to evaluate and report their conclusions regarding the effectiveness of our disclosure controls and procedures and to certify that they have done so. Effective internal controls are necessary for us to provide reliable financial reports and prevent fraud. Under Section 404 of the Sarbanes-Oxley Act, we have included a report of management on our internal control over financial reporting in our Form 10-K for our fiscal year ended December 31, 2017.2021. In addition, upon the first annual report required to be filed with the SEC following the datesince we are no longer an “emergingemerging growth company”company as defined in the Jumpstart Our Business Startups Act, or JOBS Act,of December 31, 2019, the independent registered public accounting firm auditing our financial statements will beis required to attest to and report on the effectiveness of our internal control over financial reporting.reporting for the year ended December 31, 2019 and subsequent years. We will also be required to hold a say-on-pay vote and a say-on-frequency vote at our 2021 Annual Meeting of Stockholders. The process of improving and documenting our internal controls and

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complying with Section 404 is expensive and time consuming, and requires significant attention of management. As we are no longer an emerging growth company, we are subject to increased regulatory requirements necessitating additional resources and attention from management and will result in increased costs to us, which could include higher legal fees, accounting fees and fees associated with investor relations activities, among others.

Complying with these requirements applicable to public companies may place a strain on our personnel, information technology systems and resources while diverting management’s attention from other business concerns. We have engaged outside service providers with appropriate public company compliance experience and technical accounting knowledge to support our compliance efforts. We may need to engage additional service providers to ensure compliance which may cause us to incur additional operating costs.

These and other requirements may also make it more difficult or more costly for us to obtain or maintain certain types of insurance, including directors’ and officers’ liability insurance. We may be forced to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage.

The impact of these requirements could also make it more difficult for us to attract and retain qualified persons to serve on our board of directors, our board committees or as executive officers. Any one of these requirements could have a material adverse effect on our business, financial condition and results of operations.

Because we are a public company, we are obligated to develop and maintain proper and effective internal control over financial reporting. If our internal controls over financial reporting are determined to be ineffective, or if our auditors are otherwise unable to attest to their effectiveness, when required, investor confidence in our company, and our common stock price, may be adversely affected.

Pursuant to Section 404a of the Sarbanes-Oxley Act, we have furnished a report by management on the effectiveness of our internal control over financial reporting for the fiscal year ended December 31, 20172021 and will continue to do so in each year thereafter. This assessment will beis required to include disclosure of any material weaknesses identified by our management in our internal control over financial reporting. Our independent registered public accounting firm will not beis required to formally attest to the effectiveness of our internal control over financial reporting untilfor the first annual report required to be filed with the SEC following the date we are no longer an “emerging growth company,” as defined in the JOBS Act.year ended December 31, 2019 and subsequent years.

We continue to assess our system of internal controls over financial reporting and successfully completed documentation necessary to perform the annual evaluation required to comply with Section 404. In future periods, we may discover, and not be able to remediate timely, significant deficiencies or material weaknesses. During the evaluation and testing process in 2017,2021, we did not identify any material weaknesses in our internal controls over financial reporting. In future periods, if we were to identify one or more material weaknesses in our internal control, we may be unable to assert that our internal controls are effective. If we are unable to assert that our internal controls over financial reporting are effective, we could lose investor confidence in the accuracy and completeness of our financial reports or it could cause us to fail to meet our reporting obligations, which could have a material adverse effect on the price of our common stock. In addition, any failure to comply with Section 404 could subject us to a variety of administrative sanctions, including SEC action, ineligibility for short form resale registration, the suspension or delisting of our common stock from The New York Stock Exchange, and the inability of registered broker-dealers to make a market in our common stock, which would further reduce our stock price and could harm our business.

We are eligible to be treated as an “emerging growth company” as defined in the JOBS Act, and we cannot be certain if the reduced disclosure requirements applicable to emerging growth companies makes or will make our common stock less attractive to investors.

We are an “emerging growth company”, as defined in the JOBS Act. For as long as we continue to be an emerging growth company, we may take advantage of exemptions from various reporting requirements that are applicable to other public companies that are not emerging growth companies, including:

We will remain an emerging growth company until the earliest to occur of (i) the end of the fiscal year for which we report $1.0 billion or more in annual revenues, (ii) the end of the fiscal year in which the market value of our common stock held by non-affiliates exceeds $700 million on the last business day of our second fiscal quarter, (iii) our issuance, in a three year period, of more than $1.0 billion of non-convertible debt, and (iv) December 31, 2019. We cannot predict if investors find or will find our common stock less attractive because we may rely on these exemptions. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock and our stock price may be more volatile.

The trading market in our common stock has been limited and substantially less liquid than the average trading market for a stock quoted on The New York Stock Exchange.

Since our initial listing on The New York Stock Exchange on June 13, 2014, the trading market in our common stock has been limited and substantially less liquid than the average trading market for companies listed on The New York Stock Exchange. The listing of our common stock on The New York Stock Exchange does not assure that a meaningful, consistent and liquid trading market currently exists or will exist in the future. We cannot predict whether a more active market for our common stock will develop in the future. An absence of an active trading market could adversely affect our stockholders’ ability to sell our common stock at current market prices in short time periods, or possibly at all. An inactive market may also impair our ability to raise capital by selling our common stock and may impair our ability to acquire other companies, products or technologies by using our common stock as consideration. Additionally, analyst coverage of our common stock may be limited and such lack of coverage may have a depressive effect on the market price for our common stock. As of December 31, 2017,2021, approximately 20.6%15.16% of our outstanding shares of common stock were held by our executive officers, directors, principal stockholders and their respective affiliates, which may adversely affect the liquidity of the trading market for our common stock, in as much as federal securities laws restrict sales of our

shares by these stockholders. If our affiliates continue to hold their shares of common stock, there will be a more limited trading volume in our common stock, which may make it more difficult for investors to sell their shares or increase the volatility of our stock price.

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We expect that the price of our common stock will fluctuate substantially, which could subject us to securities class action litigation and result in substantial losses to our stockholders.

The price of our common stock fluctuates in a broad range. For example, on January 2, 2019 the closing price of our shares of common stock was $2.22 and on November 18, 2021, the closing price of our shares of common stock was $63.66. Such fluctuations may fluctuate substantiallybe due to a number of factors, including the following, some of which are beyond our control:

Furthermore, the U.S. stock market has at times experienced extreme volatility that in some cases has been unrelated or disproportionate to the operating performance of particular companies. These broad market and industry fluctuations may adversely affect the market price of our common stock, regardless of our actual operating performance.

In the past, following periods of market volatility, stockholders have instituted securities class action litigation. If we become involved in securities litigation, it could have a substantial cost and divert resources and the attention of our senior management team from our business regardless of the outcome of such litigation.

Securities analysts may not continue coverage of our common stock or may issue negative reports, which may have a negative impact on the market price of our common stock.

The trading market for our common stock relies in part on the research and reports that industry or financial analysts publish about us or our business. Securities analysts may elect not to provide research coverage of our common stock. If securities analysts do not cover or continue to cover our common stock, the lack of research coverage may cause the market price of our common stock to decline. If one or more of the analysts who elects to cover us downgrades our stock, our stock price would likely decline substantially. If one or more of these analysts ceases coverage of us, we could lose visibility in the market, which in turn could cause our stock price to decline. In addition, rules mandated by the Sarbanes-Oxley Act and a global settlement reached in 2003 between the SEC, other regulatory agencies and a number of investment banks have led to a number of fundamental changes in how analysts are reviewed and compensated. In particular, many investment banking firms are required to contract with independent financial analysts for their stock research. It may be difficult for companies such as ours, with smaller market capitalizations, to attract independent financial analysts that will cover our common stock. This could have a negative effect on the market price of our stock.

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Our directors, officers and principal stockholders have significant voting power and may take actions that may not be in the best interests of our other stockholders.

As of December 31, 2017,2021, our executive officers, directors and principal stockholders and their affiliates collectively controlled approximately 20.6%15.16% of our outstanding shares of common stock. As a result, these stockholders, if they act together, may be able to control the management and affairs of our company and certain matters requiring stockholder approval, including the election of directors and approval of significant corporate transactions. This concentration of ownership may have the effect of delaying or preventing a change of control and might adversely affect the market price of our common stock. This concentration of ownership may not be in the best interests of our other stockholders.

Anti-takeover provisions in our restated certificate of incorporation and restated bylaws, and Delaware law, could delay or discourage a takeover.

Anti-takeover provisions in our restated certificate of incorporation and restated bylaws and Delaware law may have the effect of deterring or delaying attempts by our stockholders to remove or replace management, engage in proxy contests and effect changes in control. The provisions of our charter documents include:

In addition, as a Delaware corporation, we are subject to Delaware law, including Section 203 of the Delaware General Corporation Law. In general, Section 203 prohibits a Delaware corporation from engaging in any business combination with any interested stockholder for a period of three years following the date that the stockholder became an interested stockholder unless certain specific requirements are met as set forth in Section 203. These provisions, alone or together, could have the effect of deterring or delaying changes in incumbent management, proxy contests or changes in control.

Our restated certificate of incorporation designates a state or federal court located within the State of Delaware as the exclusive forum for certain types of actions and proceedings that may be initiated by our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers or employees.

Our restated certificate of incorporation provides that, subject to limited exceptions, a state or federal court located within the State of Delaware will be the exclusive forum for (1) any derivative action or proceeding brought on our behalf, (2) any action asserting a claim of breach of a fiduciary duty owed by any of our directors, officers or other employees to us or our stockholders, (3) any action asserting a claim against us arising pursuant to any provision of the Delaware General Corporation Law, our restated certificate of incorporation or our restated bylaws, or (4) any other action asserting a claim against us that is governed by the internal affairs doctrine. This exclusive forum provision does not apply to suits brought to enforce a duty or liability created by the Exchange Act. It could apply, however, to a suit that falls within one or more of the categories enumerated in the exclusive forum provision and asserts claims under the Securities Act, inasmuch as Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all suits brought to enforce any duty or liability created by the Securities Act or the rule and regulations thereunder. There is uncertainty as to whether a court would enforce such provision with respect to claims under the Securities Act, and our stockholders will not be deemed to have waived our compliance with the federal securities laws and the rules and regulations thereunder. Any person or entity purchasing or otherwise acquiring any interest in shares of our capital stock shall be deemed to have notice of and to have consented to the provisions of our restated certificate of incorporation described above. This choice of forum provision may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers or other employees, which may discourage such lawsuits against us and our directors, officers and employees. Alternatively, if a court were to find these provisions of our restated certificate of incorporation inapplicable to, or unenforceable in respect of, one or more of the specified types of actions or proceedings, we may incur additional costs associated with resolving such matters in other jurisdictions, which could adversely affect our business and financial condition.

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Our shareholders may experience future dilution as a result of future equity offerings.

In addition to the future,private placement of our common stock we completed on June 30, 2021 resulting in the issuance of 3,462,124 additional shares of our common stock, the at-the-market offering, the February 18, 2022 issuance of convertible notes with a principal amount of $100.0 million that, along with any accrued principal-in-kind interest, are convertible into shares of our common stock, and our February 15, 2022 agreement to issue 1,791,986 shares of common stock in a private placement, we may offer additional shares of our common stock or other securities convertible into or exchangeable for our common stock in order to raise additional capital.capital in the future, particularly as we look to finance our planned second manufacturing facility in Bulloch County, Georgia. We cannot assure our shareholders that we will be able to sell shares or other securities in any other offering at a price per share that is equal to or greater than the price per share our shareholders paid for our shares. Investors purchasing shares or other securities in the future could have rights, preferences or privileges senior to those of our shareholders and our shareholders may experience dilution. Our shareholders may incur additional dilution upon the exercise of any outstanding stock options or warrants, the issuance of shares of restricted stock, the vesting of restricted stock units, or the issuance, vesting or exercise of other equity awards.

We do not intend to pay cash dividends in the foreseeable future and, consequently, our shareholders’ ability to achieve a return on yourtheir investment will depend on appreciation in the price of our common stock.

We have never declared or paid cash dividends on our common stock and we do not intend to pay any cash dividends on our common stock in the foreseeable future. We currently expect to retain all available funds and any future earnings for use in the operation and expansion of our business. In addition, the terms of our revolving credit facility restrict our ability to pay dividends and any future credit facilities, loan agreements, debt instruments or other agreements may further restrict our ability to pay dividends. Payments of future dividends, if any, will be at the discretion of our board of directors after taking into account various factors, including our business, results of operations and financial condition, current and anticipated cash needs, plans for expansion and any legal or contractual limitations on our ability to pay dividends. As a result, capital appreciation, if any, of our common stock will be our shareholders’ sole source of potential gain for the foreseeable future.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

This report includes forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, or the Securities Act, and Section 21E of the Exchange Act that relate to future events or our future financial performance and involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to differ materially from any future results, levels of activity, performance or achievements expressed or implied by these forward-looking statements. Words such as, but not limited to, “believe,” “expect,” “anticipate,” “estimate,” “intend,” “seek,” “may,” “plan,” “potential,” “predict,” “project,” “targets,” “likely,” “will,” “would,” “could,” “should,” “continue,” and similar expressions or phrases, or the negative of those expressions or phrases, are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. Although we believe that we have a reasonable basis for each forward-looking statement contained in this report, we caution you that these statements are based on our projections of the future that are subject to known and unknown risks and uncertainties and other factors that may cause our actual results, level of activity, performance or achievements expressed or implied by these forward-looking statements, to differ. The description of our Business set forth in Item 1, the Risk Factors set forth in this Item 1A and our Management’s Discussion and Analysis of Financial Condition and Results of Operations set forth in Item 7 as well as other sections in this report, discuss some of the factors that could contribute to these differences. These forward-looking statements include, among other things, statements about:

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