MidCap Loan Facility On August 19, 2024, we and Aspen Aerogels Rhode Island, LLC, a Rhode Island limited liability company (Aspen RI and, together with the Company, each, a Borrower and collectively, the Borrowers) entered into a Credit, Security and Guaranty Agreement (the Credit Agreement and the facilities provided thereunder, collectively, the MidCap Loan Facility), by and among the Borrowers, MidCap Funding IV Trust, as agent (the Agent), MidCap Financial Trust, as term loan servicer, the financial institutions or other entities from time to time party thereto as lenders (the Lenders), and the other parties party thereto as additional guarantors and/or borrowers from time to time.
MidCap Loan Facility On August 19, 2024, we and Aspen Aerogels Rhode Island, LLC, a Rhode Island limited liability company (Aspen RI and, together with the Company, each, a Borrower and collectively, the Borrowers) entered into a Credit, Security and Guaranty Agreement (the Credit Agreement and the facilities provided thereunder, collectively, the MidCap Loan Facility), by and among the Borrowers, MidCap Funding IV Trust, as agent (the Agent), MidCap Financial Trust, as term loan servicer (the Term Loan Servicer), the financial institutions or other entities from time to time party thereto as lenders (the Lenders), and the other parties party thereto as additional guarantors and/or borrowers from time to time.
Cost of Revenue Year Ended December 31, 2024 2023 Change % of Related % of Related Amount Revenue Amount Revenue Amount Percentage ($ in thousands) Cost of revenue: Energy industrial $ 87,425 60% $ 94,477 73% $ (7,052 ) (7)% Thermal barrier 182,377 59% 87,320 79% 95,057 109% Total cost of revenue $ 269,802 60% $ 181,797 76% $ 88,005 48% Total cost of revenue increased $88.0 million, or 48%, to $269.8 million in 2024 from $181.8 million in 2023.
Cost of Revenue Year Ended December 31, Change 2024 2023 Amount Percentage of Related Revenue Amount Percentage of Related Revenue Amount Percentage ($ in thousands) Cost of revenue: Energy industrial $ 87,425 60% $ 94,477 73% $ (7,052 ) (7)% Thermal barrier 182,377 59% 87,320 79% 95,057 109% Total cost of revenue $ 269,802 60% $ 181,797 76% $ 88,005 48% Total cost of revenue increased $88.0 million, or 48%, to $269.8 million in 2024 from $181.8 million in 2023.
Purchase obligations are entered into with various vendors in the normal course of business and are consistent with our expected requirements. Recently Issued Accounting Standards From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board, or FASB, or other standard setting bodies. Recently issued standards typically do not require adoption until a future effective date.
Purchase obligations are entered into with various vendors in the normal course of business and are consistent with our expected requirements. Recently Issued Accounting Standards From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (FASB) or other standard setting bodies. Recently issued standards typically do not require adoption until a future effective date.
The $42.8 million increase was the result of a $27.5 million loss on extinguishment of debt, $6.1 million net impact of capitalized interest relating to our Convertible Note in the comparable period in 2023, $1.8 million of deferred financing costs related to the GM Loan Agreement (which was terminated on August 16, 2024), a $2.2 million income from Employee Retention Credits in the comparable period in 2023 not repeated in 2024, a $0.9 million decrease of interest income, and a $4.3 million increase of interest expense.
The $42.8 million increase was the result of a $27.5 million loss on extinguishment of debt, $6.1 million net impact of capitalized interest relating to our 2022 Convertible Note in the comparable period in 2023, $1.8 million of deferred financing costs related to the GM Loan Agreement (which was terminated on August 16, 2024), $2.2 million of income from Employee Retention Credits in the comparable period in 2023 not repeated in 2024, a $0.9 million decrease of interest income, and a $4.3 million increase of interest expense.
Gross Profit Year Ended December 31, 2024 2023 Change Percentage Percentage Amount of Revenue Amount of Revenue Amount Percentage ($ in thousands) Gross profit: Energy industrial $ 58,442 40% $ 34,162 27% $ 24,280 71% Thermal barrier 124,455 41% 22,759 21% 101,696 447% Total gross profit $ 182,897 40% $ 56,921 24% $ 125,976 221% Gross profit increased $126.0 million, or 221%, to $182.9 million in 2024 from $56.9 million in 2023.
Gross Profit Year Ended December 31, Change 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue Amount Percentage Gross profit: Energy industrial $ 58,442 40% $ 34,162 27% $ 24,280 71% Thermal barrier 124,455 41% 22,759 21% 101,696 447% Total gross profit $ 182,897 40% $ 56,921 24% $ 125,976 221% Gross profit increased $126.0 million, or 221%, to $182.9 million in 2024 from $56.9 million in 2023.
These customers include General Motors LLC (GM), Toyota, Scania, Automotive Cells Company, which is a battery cell joint venture between Stellantis N.V, Saft-TotalEnergies and Mercedes-Benz (ACC), Audi, a luxury brand of the Volkswagen Group, Volvo Truck, and a large EU battery manufacturer to supply a next generation vehicle platform of a major EU luxury sports car brand.
These customers include General Motors LLC (GM), Scania, Automotive Cells Company, which is a battery cell joint venture between Stellantis N.V, Saft-TotalEnergies and Mercedes-Benz (ACC), Audi, a luxury brand of the Volkswagen Group, Volvo Truck, and a large EU battery manufacturer to supply a next generation vehicle platform of a major EU luxury sports car brand.
We use Adjusted EBITDA: • as a measure of operating performance because it does not include the impact of items that we do not consider indicative of our core operating performance; • for planning purposes, including the preparation of our annual operating budget; • to allocate resources to enhance the financial performance of our business; and • as a performance measure used under our bonus plan.
We use Adjusted EBITDA: • as a measure of operating performance because it does not include the impact of items that we do not consider indicative of our core operating performance; • for planning purposes, including the preparation of our annual operating budget; 67 • to allocate resources to enhance the financial performance of our business; and • as a performance measure used under our bonus plan.
Energy Industrial We also design, develop and manufacture innovative, high-performance aerogel insulation used primarily in the energy industrial market. 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.
Energy Industrial We design, develop and manufacture innovative, high-performance aerogel insulation used primarily in the energy industrial market. 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.
We based the simulation model on the Black Scholes option-pricing model and a number of other complex assumptions including (i) whether the vesting condition would be satisfied within the time-vesting periods, and (ii) the date the common stock price target would be achieved per the terms of the agreement. 83
We based the simulation model on the Black Scholes option-pricing model and a number of other complex assumptions including (i) whether the vesting condition would be satisfied within the time-vesting periods, and (ii) the date the common stock price target would be achieved per the terms of the agreement.
Key Metrics and Non-GAAP Financial Measures We regularly review a number of metrics, including the following key metrics, to evaluate our business, measure our performance, identify trends affecting our business, formulate financial projections and make strategic decisions. 65 Adjusted EBITDA We use Adjusted EBITDA, a non-GAAP financial measure, as a means to assess our operating performance.
Key Metrics and Non-GAAP Financial Measures We regularly review a number of metrics, including the following key metrics, to evaluate our business, measure our performance, identify trends affecting our business, formulate financial projections and make strategic decisions. Adjusted EBITDA We use Adjusted EBITDA, a non-GAAP financial measure, as a means to assess our operating performance.
The MidCap Loan Facility under the Credit Agreement is comprised of (i) the Term Loan Facility in an aggregate principal amount of $125.0 million and (ii) the Revolving Facility in an aggregate principal amount not to exceed the lesser of $100.0 million and the value of the Borrowing Base (as defined in the Credit Agreement).
The Amended MidCap Loan Facility under the Credit Agreement is comprised of (i) the Term Loan Facility in an aggregate principal amount of $125.0 million and (ii) the Revolving Facility in an aggregate principal amount not to exceed the lesser of $100.0 million and the value of the Borrowing Base (as defined in the Credit Agreement).
While the OEM has agreed to purchase its requirement for Barriers for locations to be designated from time to time by the OEM, it has no obligation to purchase any minimum quantity of Barriers under the 80 Contracts. In addition, the OEM may terminate the Contracts any time and for any or no reason.
While the OEM has agreed to purchase its requirement for Barriers for locations to be designated from time to time by the OEM, it has no obligation to purchase any minimum quantity of Barriers under the Contracts. In addition, the OEM may terminate the Contracts any time and for any or no reason.
The increase in product volume had the effect of increasing product revenue by approximately $0.7 million for the year ended December 31, 2024. Thermal barrier revenue was $306.8 million for the year ended December 31, 2024, as compared to $110.1 million for the year ended December 31, 2023.
The increase in product volume had the effect of increasing product revenue by approximately $0.7 million for the year ended December 31, 2024. 78 Thermal barrier revenue was $306.8 million for the year ended December 31, 2024, as compared to $110.1 million for the year ended December 31, 2023.
The increase in average selling price reflected the impact of price increases enacted in 2024 and a change in the mix of products sold, as we strive to maximize capacity in our aerogel manufacturing facility. This increase in average selling price had the effect of increasing product revenue by approximately $16.6 million for the year ended December 31, 2024.
The increase in average selling price reflected the impact of price increases enacted in 2024 and a change in the mix of products sold, as we strived to maximize capacity in our aerogel manufacturing facility. This increase in average selling price had the effect of increasing product revenue by approximately $16.6 million for the year ended December 31, 2024.
See “Risk Factors - Risks Related to Our Business and Strategy – We will require additional capital to pursue our growth strategy, but we may not be able to obtain additional financing on acceptable terms or at all” in this Annual Report on Form 10-K for the year ended December 31, 2023.
See “Risk Factors - Risks Related to Our Business and Strategy – We will require additional capital to pursue our growth strategy, but we may not be able to obtain additional financing on acceptable terms or at all” in this Annual Report on Form 10-K for the year ended December 31, 2025.
The net proceeds to us from the Offering were approximately $93.2 million, after deducting underwriting discounts and commissions and estimated offering expenses payable by us.
The net proceeds to us from the Offering were approximately $93.2 million, after deducting underwriting discounts and commissions and offering expenses payable by us.
Our ten largest customers accounted for approximately 84% of our total revenue during the year ended December 31, 2024, and we expect that most of our revenue will continue to come from a relatively small number of customers for the foreseeable future. In 2024, sales to GM and Distribution International, Inc.
Our ten largest customers accounted for approximately 84% of our total revenue during the year ended December 31, 2025, and we expect that most of our revenue will continue to come from a relatively small number of customers for the foreseeable future. In 2025, sales to GM and Distribution International, Inc.
Compensation and related costs include $2.0 million of charge from the cancellation of the unearned performance-based restricted shares. General and administrative expenses as a percentage of total revenue decreased to 16% in 2024 from 24% in 2023 primarily due to the 90% increase in revenue from the comparable period in 2023.
Compensation and related costs included a $2.0 million charge from the cancellation of the unearned performance-based restricted shares. General and administrative expenses as a percentage of total revenue decreased to 16% in 2024 from 24% in 2023 primarily due to the 90% increase in revenue from the comparable period in 2023.
GAAP financial statements included elsewhere in this Annual Report on Form 10-K, and not to rely on any single financial measure to evaluate our business. 66 The following table presents a reconciliation of net loss, the most directly comparable U.S.
GAAP financial statements included elsewhere in this Annual Report on Form 10-K, and not to rely on any single financial measure to evaluate our business. The following table presents a reconciliation of net income (loss), the most directly comparable U.S.
Stock-based Compensation We maintain an equity incentive plan pursuant to which our Board of Directors may grant qualified and nonqualified stock options, restricted stock, restricted stock units and other stock-based awards to board members, officers, key employees and others who provide or have provided service to us.
Stock-based Compensation We maintain an equity incentive plan pursuant to which our Board of Directors may grant qualified and nonqualified stock options, restricted stock, RSUs and other stock-based awards to board members, officers, key employees and others who provide or have provided service to us.
As indicated in the overview of the liquidity and capital resources section, to meet expected demand for our aerogel products, we plan to make additional productivity improvements in our existing East Providence facility and utilize a flexible supply strategy, including but not limited to use of our external manufacturing capabilities in China, which currently support Aspen’s Energy Industrial segment and are capable of delivering increased aerogel production capacity.
As indicated in the overview of the liquidity and capital resources section, to meet expected demand for our aerogel products, we plan to make additional productivity improvements in our existing East Providence facility and utilize a flexible supply strategy, including but not limited to use of our external manufacturing capabilities in China, which currently supports our Energy Industrial segment and are capable of delivering increased aerogel production capacity.
In December 2023, we sold 6,060,607 shares of our common stock at an offering price of $12.38 per share in a registered direct offering for net proceeds of $74.4 million, after deducting offering expenses of approximately $0.6 million.
Financial Summary In December 2023, we sold 6,060,607 shares of our common stock at an offering price of $12.38 per share in a registered direct offering for net proceeds of $74.4 million, after deducting offering expenses of approximately $0.6 million.
We believe this is a better representation of the estimated life than our actual limited historical exercise behavior. • For the years ended December 31, 2024, 2023 and 2022, we used our historical volatility as a basis to estimate expected volatility in the valuation of stock options. • The risk-free interest rate is based on U.S.
We believe this is a better representation of the estimated life than our actual limited historical exercise behavior. • For the years ended December 31, 2025, 2024 and 2023, we used our historical volatility as a basis to estimate expected volatility in the valuation of stock options. 85 • The risk-free interest rate is based on U.S.
Purchase commitments related to capital expenditures are anticipated to be spent over the next three years, while our remaining purchase commitments are anticipated to be spent throughout 2025. Purchase obligations relate primarily to open purchase orders for capital expenditures, inventories, and goods and services.
Purchase commitments related to capital expenditures are anticipated to be spent over the next three years, while our remaining purchase commitments are anticipated to be spent throughout 2026. Purchase obligations relate primarily to open purchase orders for capital expenditures, inventories, and goods and services.
The decrease in manufacturing and other operating costs and 72 increase in material costs was the result of lower volume of energy industrial products manufactured at our plant as we move manufacturing to the external manufacturing facility. Thermal barrier cost of revenue increased $95.1 million to $182.4 million as compared to $87.3 million in the comparable period in 2023.
The decrease in manufacturing and other operating costs and increase in material costs was the result of lower volume of energy industrial products manufactured at our plant as we moved manufacturing to the external manufacturing facility. Thermal barrier cost of revenue increased $95.1 million to $182.4 million as compared to $87.3 million in the comparable period in 2023.
LLC (collectively, the Underwriters), pursuant to which we issued and sold an aggregate of 4,887,500 shares of our common stock, which included 637,500 shares pursuant to the Underwriters’ option to purchase additional shares of our common stock, to the Underwriters in a registered underwritten offering (the Offering). The price to the public in the Offering was $20.00 per share.
LLC (the Underwriters), pursuant to which we issued and sold an aggregate of 4,887,500 shares of our common stock, which included 637,500 shares pursuant to the Underwriters’ option to purchase additional shares of our common stock, to the Underwriters in an underwritten registered direct offering (the Offering). The price to the public in the Offering was $20.00 per share.
The MidCap Loan Facility is guaranteed by Aspen Aerogels Mexico Holdings and is secured by a lien on substantially all existing and after-acquired assets of the Loan Parties, including the equity interest in Aspen RI, Aspen Aerogels Mexico Holdings and Aspen Aerogels Georgia owned by us, in each case, subject to customary exceptions.
The Amended MidCap Loan Facility is guaranteed by Aspen Mexico and Aspen Georgia and is secured by a lien on substantially all existing and after-acquired assets of the Loan Parties, including the equity interest in Aspen RI, Aspen Mexico and Aspen Georgia owned by us, in each case, subject to customary exceptions.
Convertible Note - Related Party On August 19, 2024, we entered into the Note Repurchase Agreement with Wood River, pursuant to which we repurchased from Wood River the Convertible Note), such aggregate amount being the entire outstanding amount of the Convertible Note, for a total purchase price of $150.0 million in cash, which amount equals to the Redemption Price (as defined in the Convertible Note).
Convertible Note - Related Party On August 19, 2024, we entered into the Note Repurchase Agreement with Wood River, pursuant to which we repurchased from Wood River $123.9 million in aggregate capitalized principal amount of the 2022 Convertible Note, such aggregate amount being the entire outstanding amount of the 2022 Convertible Note, for a total purchase price of $150.0 million in cash, which amount equals to the Redemption Price (as defined in the 2022 Convertible Note).
Material costs as a percentage of product revenue were 38%, 36% and 51% for the years ended December 31, 2024, 2023 and 2022, respectively. Material costs as a percentage of product revenue vary from product to product due to differences in average selling prices, material requirements, product thicknesses, and manufacturing yields.
Material costs as a percentage of product revenue were 42%, 38% and 36% for the years ended December 31, 2025, 2024 and 2023, respectively. Material costs as a percentage of product revenue vary from product to product due to differences in average selling prices, material requirements, product thicknesses, and manufacturing yields.
Accordingly, we expect our gross profit to vary significantly in absolute dollars and as a percentage of revenue from period to period. Gross profit as a percentage of total revenue was 40%, 24%, and 3% for the years ended December 31, 2024, 2023 and 2022, respectively.
Accordingly, we expect our gross profit to vary significantly in absolute dollars and as a percentage of revenue from period to period. Gross profit as a percentage of total revenue was 17%, 40%, and 24% for the years ended December 31, 2025, 2024 and 2023, respectively.
Manufacturing expense includes labor, utilities, maintenance expense, and depreciation on manufacturing assets. Manufacturing expense also includes stock-based compensation of 68 manufacturing employees and shipping costs. Manufacturing expense as a percentage of product revenue was 22%, 46% and 44% for the years ended December 31, 2024, 2023 and 2022, respectively.
Manufacturing expense includes labor, utilities, maintenance expense, and depreciation on manufacturing assets. Manufacturing expense also includes stock-based compensation of manufacturing employees and shipping costs. Manufacturing expense as a percentage of product revenue was 33%, 22% and 46% for the years ended December 31, 2025, 2024 and 2023, respectively.
MidCap Loan Facility On August 19, 2024, we and Aspen RI entered into the Credit Agreement, by and among the Borrowers, the Agent, MidCap Financial Trust, as term loan servicer, the Lenders, and the other parties party thereto as additional guarantors and/or borrowers from time to time.
MidCap Loan Facility On August 19, 2024, we and Aspen RI entered into the Credit Agreement and the facilities provided thereunder, by and among the Borrowers, the Agent, the Term Loan Servicer, the Lenders, and the other parties party thereto as additional guarantors and/or borrowers from time to time.
We expect that material costs will increase in absolute dollars during 2025 due to projected growth in product shipments and contracts but remain stable as a percentage of revenue due to improved manufacturing, and fabrication yields and a favorable mix of products sold. Manufacturing expense is also a significant component of cost of revenue.
We expect that material costs will decrease in absolute dollars during 2026 due to projected decline in product shipments and contracts but remain stable as a percentage of revenue due to improved manufacturing, and fabrication yields and a favorable mix of products sold. Manufacturing expense is also a significant component of cost of revenue.
Financing Activities Net cash provided by financing activities in 2024 totaled $122.0 million and consisted of $14.9 million in proceeds from a sales leaseback, $10.4 million in proceeds from employee stock option exercises, $120.1 million in proceeds from the term loan, net of issues costs, and $42.1 in proceeds from the revolver, net of issuance costs, $93.2 million in proceeds from the registered direct offering of common stock. net of issuance costs, offset by $150.0 million in cash used for the repayment of the convertible note, $6.5 million in cash used for repayments from the term loan, $1.3 million in cash used for payments made for employee tax withholdings associated with the vesting of restricted stock units, and $0.9 million in repayments of a sales leaseback.
Net cash provided by financing activities in 2024 totaled $122.0 million and consisted of $14.9 million in proceeds from a sales leaseback, $10.4 million in proceeds from employee stock option exercises, $120.1 million in proceeds from the Term Loan, net of issues costs, and $42.1 in proceeds from the revolving line of credit, net of issuance costs, $93.2 million in proceeds from the registered direct offering of common stock, net of issuance costs, partially offset by $150.0 million in cash used for the repayment of the 2022 Convertible Note, $6.5 million in cash used for repayments from the Term Loan Facility, $1.3 million in cash used for payments made for employee tax withholdings associated with the vesting of RSUs, and $0.9 million in repayments of a sales leaseback.
Underwritten Offering In October 2024, we entered into an underwriting agreement (the Underwriting Agreement) with Goldman Sachs & Co. LLC and Morgan Stanley & Co.
In October 2024, we entered into an underwriting agreement with Goldman Sachs & Co. LLC and Morgan Stanley & Co.
Total revenue from outside of the United States, based on shipment destination, amounted to $194.2 million, or 43% of our total revenue, $87.7 million, or 37% of our total revenue, and $66.4 million, or 37% of our total revenue, in the years ended December 31, 2024, 2023 and 2022, respectively.
Total revenue from outside of the United States, based on shipment destination, amounted to $99.0 million, or 37% of our total revenue, $194.2 million, or 43% of our total revenue, and $87.7 million, or 37% of our total revenue, in the years ended December 31, 2025, 2024 and 2023, respectively.
Net operating losses of $159.0 million generated from 2018 through 2023 have an unlimited carryforward . 70 Results of Operations The following tables set forth our results of operations for the periods presented: Year Ended December 31, 2024 2023 2022 ($ in thousands) Revenue $ 452,699 $ 238,718 $ 180,364 Cost of revenue 269,802 181,797 175,388 Gross profit 182,897 56,921 4,976 Operating expenses Research and development 18,050 16,356 16,930 Sales and marketing 35,677 33,008 28,792 General and administrative 71,125 56,760 38,499 Impairment of equipment under development 3,510 — — Total operating expenses 128,362 106,124 84,221 Income (loss) from operations 54,535 (49,203 ) (79,245 ) Other income (expense) Interest expense, convertible note - related party (7,550 ) (5,328 ) (5,110 ) Interest income (expense), net (4,409 ) 6,534 1,617 Loss on extinguishment of debt (27,487 ) — — Income from Employee Retention Credits — 2,186 — Total other income (expense) (39,446 ) 3,392 (3,493 ) Income tax expense (1,714 ) — — Net income (loss) $ 13,375 $ (45,811 ) $ (82,738 ) Year ended December 31, 2024 compared to year ended December 31, 2023 The following tables set forth our results of operations for the periods presented: Year Ended December 31, Year Ended December 31, 2024 2023 $ Change % Change 2024 2023 ($ in thousands) (Percentage of total revenue) Revenue $ 452,699 $ 238,718 $ 213,981 90 % 100 % 100 % Cost of revenue 269,802 181,797 88,005 48 % 60 % 76 % Gross profit 182,897 56,921 125,976 221 % 40 % 24 % Operating expenses Research and development 18,050 16,356 1,694 10 % 4 % 7 % Sales and marketing 35,677 33,008 2,669 8 % 8 % 14 % General and administrative 71,125 56,760 14,365 25 % 16 % 24 % Impairment of equipment under development 3,510 — 3,510 NM 1 % 0 % Total operating expenses 128,362 106,124 22,238 21 % 28 % 44 % Income (loss) from operations 54,535 (49,203 ) 103,738 (211 )% 12 % (21 )% Other income (expense) Interest expense, convertible note - related party (7,550 ) (5,328 ) (2,222 ) 42 % (2 )% (2 )% Interest income, net (4,409 ) 6,534 (10,943 ) (167 )% (1 )% 3 % Loss on extinguishment of debt (27,487 ) — (27,487 ) NM (6 )% 0 % Income from Employee Retention Credits — 2,186 (2,186 ) (100 )% — % 1 % Total other income (expense) (39,446 ) 3,392 (42,838 ) (1,263 )% (9 )% 1 % Income tax expense (1,714 ) — (1,714 ) NM (0 )% (— )% Net income (loss) $ 13,375 $ (45,811 ) $ 59,186 129 % 3 % (19 )% 71 Revenue Year Ended December 31, 2024 2023 Change Percentage of Percentage of Amount Revenue Amount Revenue Amount Percentage ($ in thousands) Revenue: Energy industrial $ 145,867 32% $ 128,639 54% $ 17,228 13% Thermal barrier 306,832 68% 110,079 46% 196,753 179% Total revenue $ 452,699 100% $ 238,718 100% $ 213,981 90% Total revenue increased $214.0 million, or 90%, to $452.7 million in 2024 from $238.7 million in 2023.
We incurred $1.7 million of income tax expense related to our maquiladora operations in Mexico for the comparable period in 2024. 77 Year ended December 31, 2024 compared to year ended December 31, 2023 The following tables set forth our results of operations for the periods presented: Year Ended December 31, Year Ended December 31, 2024 2023 $ Change % Change 2024 2023 ($ in thousands) (Percentage of total revenue) Revenue $ 452,699 $ 238,718 $ 213,981 90 % 100 % 100 % Cost of revenue 269,802 181,797 88,005 48 % 60 % 76 % Gross profit 182,897 56,921 125,976 221 % 40 % 24 % Operating expenses Research and development 18,050 16,356 1,694 10 % 4 % 7 % Sales and marketing 35,677 33,008 2,669 8 % 8 % 14 % General and administrative 71,125 56,760 14,365 25 % 16 % 24 % Impairment of equipment under development 3,510 — 3,510 100 % 1 % — % Total operating expenses 128,362 106,124 22,238 21 % 28 % 44 % Income (loss) from operations 54,535 (49,203 ) 103,738 (211 )% 12 % 21 % Other income (expense) Interest expense, convertible note - related party (7,550 ) (5,328 ) (2,222 ) 42 % 2 % 2 % Interest income, net (4,409 ) 6,534 (10,943 ) (167 )% 1 % 3 % Loss on extinguishment of debt (27,487 ) — (27,487 ) (100 )% 6 % — % Income from Employee Retention Credits — 2,186 (2,186 ) (100 )% — % 1 % Total other income (expense) (39,446 ) 3,392 (42,838 ) (1,263 )% 9 % 1 % Income tax expense (1,714 ) — (1,714 ) (100 )% 0 % — % Net income (loss) $ 13,375 $ (45,811 ) $ 59,186 129 % 3 % 19 % Revenue Year Ended December 31, Change 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue Amount Percentage ($ in thousands) Revenue: Energy industrial $ 145,867 32% $ 128,639 54% $ 17,228 13% Thermal barrier 306,832 68% 110,079 46% 196,753 179% Total revenue $ 452,699 100% $ 238,718 100% $ 213,981 90% Total revenue increased $214.0 million, or 90%, to $452.7 million in 2024 from $238.7 million in 2023.
We record deferred revenue for product sales when (i) we have delivered products but other revenue recognition criteria have not been satisfied or (ii) payments have been received in advance of the completion of required performance obligations.
Revenue is recognized upon the satisfaction of contractual performance obligations. 69 We record deferred revenue for product sales when (i) we have delivered products but other revenue recognition criteria have not been satisfied or (ii) payments have been received in advance of the completion of required performance obligations.
We record tax expenses in connection with our Mexican maquiladora operations. At December 31, 2024, we had $315.3 million of net operating losses available to offset future federal income tax, if any, of which $156.3 million expire on various dates through December 31, 2037.
We record tax expenses in connection with our Mexican maquiladora operations. At December 31, 2025, we had $372.3 million of net operating losses available to offset future federal income tax, if any, of which $145.0 million expire on various dates through December 31, 2037.
Loss on Extinguishment of Debt On August 19, 2024, we entered into the Note Purchase Agreement, pursuant to which we repurchased from Wood River $123.9 million in aggregate capitalized principal amount (inclusive of PIK interest paid through June 30, 2024) of the 2022 Convertible Note, such aggregate amount being the entire outstanding amount of the 2022 Convertible Note, for a total purchase price of $150.0 million in cash, which amount equals to the Redemption Price (as defined in the 2022 Convertible Note).
Loss on Extinguishment of Debt On August 19, 2024, we entered into a note purchase and sale agreement (the Note Repurchase Agreement) with Wood River, LLC (Wood River), an entity affiliated with Koch Disruptive Technologies, LLC (Koch), pursuant to which we repurchased from Wood River $123.9 million in aggregate capitalized principal amount (inclusive of PIK interest paid through June 30, 2024) of the 2022 Convertible Note, such aggregate amount being the entire outstanding amount of the 2022 Convertible Note, for a total purchase price of $150.0 million in cash, which amount equals to the Redemption Price (as defined in the 2022 Convertible Note).
The following assumptions were used to estimate the fair value of the option awards: Year Ended December 31, 2024 2023 2022 Weighted-average assumptions: Expected term (in years) 5.99 6.12 5.97 Expected volatility 75.04 % 70.04 % 61.85 % Risk free rate 4.11 % 4.08 % 2.13 % Expected dividend yield — % — % — % 82 • The expected term represents the period that our stock-based awards are expected to be outstanding and is determined using the simplified method described in ASC Topic 718, Compensation — Stock Compensation , for all grants.
The following assumptions were used to estimate the fair value of the option awards: Year Ended December 31, 2025 2024 2023 Weighted-average assumptions: Expected term (in years) 5.95 5.99 6.12 Expected volatility 79.77 % 75.04 % 70.04 % Risk free interest rate 4.03 % 4.11 % 4.08 % Expected dividend yield — % — % — % • The expected term represents the period that our stock-based awards are expected to be outstanding and is determined using the simplified method described in ASC Topic 718, Compensation — Stock Compensation , for all grants.
Cost of Revenue Cost of product revenue consists primarily of materials and manufacturing expense. Cost of product revenue is recorded when the related product revenue is recognized. Material is a significant component of cost of product revenue and includes fibrous batting, silica materials and additives.
Cost of Revenue Cost of product revenue consists primarily of materials and manufacturing expenses. Cost of product revenue is recorded when the related product revenue is recognized. Material is a significant component of cost of product revenue and includes fibrous batting, silica materials, CO 2 and other additives.
Impairment of Equipment Under Development The $3.5 million impairment of equipment under development was the result of a charge for impairment of assets due to obsolescence following development of new and more efficient equipment.
Impairment of $3.5 million for the comparable period in 2024 was the result of a charge for impairment of assets due to obsolescence following development of new and more efficient equipment.
Pursuant to the Contracts, we are obligated to supply Barriers at fixed annual prices and at volumes to be specified by the OEM up to a daily maximum quantity through the respective terms of the agreements, which expire at various times from 2026 through 2034.
Pursuant to the Contracts, we are obligated to supply Barriers at fixed annual prices and at volumes to be specified by the OEM up to a daily maximum quantity through the respective terms of the agreements, which expire at various times from 2030 through 2034 and, in certain cases, may be extended by GM.
Capital Spending and Future Capital Requirements We have made capital expenditures primarily to develop and expand our manufacturing capacity. Our capital expenditures totaled $86.3 million in 2024, $175.5 million in 2023 and $178.0 million in 2022.
Capital Spending and Future Capital Requirements We have made capital expenditures primarily to develop and expand our manufacturing capacity. Our capital expenditures totaled $37.4 million in 2025, $86.3 million in 2024 and $175.5 million in 2023.
As of December 31, 2024, we had capital commitments of approximately $172.4 million, which included commitments for which we have entered into contracts as well as commitments authorized by our Board of Directors.
As of December 31, 2025, we had capital commitments of approximately $12.3 million, which included commitments for which we have entered into contracts as well as commitments authorized by our Board of Directors.
Cash and cash equivalents consist primarily of cash, money market accounts, and sweep accounts on deposit with banks. As of December 31, 2024, we had $220.9 million of cash and cash equivalents and $16.7 million of availability under the Revolving Facility.
Cash and cash equivalents consist primarily of cash, money market accounts, and sweep accounts on deposit with banks. As of December 31, 2025, we had $156.9 million of cash and cash equivalents and $9.5 million of availability under the Revolving Facility.
Sales and marketing expenses as a percentage of total revenue decreased to 14% in 2023 from 16% in 2022 primarily due to the 32% increase in revenue from the comparable period in 2022.
Sales and marketing expenses as a percentage of total revenue decreased to 8% in 2024 from 14% in 2023 primarily due to the 90% increase in revenue from the comparable period in 2023.
Pursuant to the Note Repurchase Agreement, all rights and obligations, covenants and agreements under the Convertible Note and the underlying note purchase agreement were satisfied and discharged. Purchase Commitments As of December 31, 2024, we had purchase commitments of approximately $243.3 million, which included capital commitments of $172.4 million.
Pursuant to the Note Repurchase Agreement, all rights and obligations, covenants and agreements under the 2022 Convertible Note and the underlying note purchase agreement were satisfied and discharged. Purchase Commitments As of December 31, 2025, we had purchase commitments of approximately $36.2 million, which included capital commitments of $12.3 million.
Additionally, we have entered into a contract with Prodensa Servicios de Consultora (Prodensa) to establish OPE Manufacturer Mexico S de RL de CV, a maquiladora located in Mexico (OPE), which assembles thermal barrier PyroThin products and operates an automated fabrication facility for PyroThin.
Additionally, we entered into a contract with Prodensa Servicios de Consultora (Prodensa) to establish OPE Manufacturer Mexico S de RL de CV, a maquiladora located in Mexico (OPE), which assembles thermal barrier PyroThin products and operates an automated fabrication facility for PyroThin. We subsequently purchased OPE for a nominal value in accordance with the terms of the agreement.
These commitments relate to the enhancement of our existing production lines in our East Providence facility and our fabrication operation in Mexico, and the previously planned aerogel manufacturing facility in Statesboro, Georgia and consist primarily of costs for equipment and construction.
These commitments relate to the enhancement of our existing production lines in our East Providence facility and our fabrication operation in Mexico, and consist primarily of costs for equipment.
We experienced a 90% increase in total revenue during 2024 driven by the increase in our energy industrial business, particularly in North America, and continued growth in the EV market. A substantial majority of our revenue is generated from a limited number of direct customers, including distributors, contractors, fabricators, OEMs, partners and end-user customers.
We experienced a 40% decrease in total revenue during 2025 driven by the decreases in our EV business and energy industrial business, particularly in Latin and North America. A substantial majority of our revenue is generated from a limited number of direct customers, including distributors, contractors, fabricators, OEMs, partners and end-user customers.
We are currently supplying thermal barrier production parts to both General Motors and Toyota, and thermal barrier prototype parts to a number of global manufacturers of EVs, grid storage and home battery systems. During 2024, 2023 and 2022, we sold $306.8 million, $110.1 million and $55.6 million, respectively, of our PyroThin thermal barriers.
We are currently supplying thermal barrier production parts to GM, Toyota, and ACC, and thermal barrier prototype parts to a number of global manufacturers of EVs, grid storage, and home battery systems. During 2025, 2024 and 2023, we sold $168.9 million, $306.8 million and $110.1 million, respectively, of our PyroThin thermal barriers, primarily to GM.
(Distribution) represented 64% and 6% of our total revenue, respectively. In 2023, sales to GM and Distribution represented 41% and 14% of our total revenue, respectively. In 2022, sales to GM and Distribution represented 25% and 22% of our total revenue, respectively.
(Distribution) represented 59% and 9% of our total revenue, respectively. In 2024, sales to GM and Distribution represented 64% and 6% of our total revenue, respectively. In 2023, sales to GM and Distribution represented 41% and 14% of our total revenue, respectively.
Other Income (Expense), net Year Ended December 31, Change 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue Amount Percentage ($ in thousands) Other income (expense): Interest expense, related party $ (7,550 ) (2)% $ (5,328 ) (2)% $ (2,222 ) 42% Interest income (expense), net (4,409 ) (1)% 6,534 3% (10,943 ) (167)% Loss on extinguishment of debt (27,487 ) (6)% — 0% (27,487 ) NM Income from Employee Retention Credits — 0% 2,186 1% (2,186 ) NM Total other income (expense), net $ (39,446 ) (9)% $ 3,392 1% $ (42,838 ) (1,263)% Other income (expense), net decreased by $42.8 million to $39.4 million in 2024 from $3.4 million in 2023.
Impairment of Property, Plant and Equipment The $3.5 million impairment of property, plant and equipment for the year ended December 31, 2024 was the result of a charge for impairment of assets due to obsolescence following development of new and more efficient equipment. 80 Other Income (Expense), net Year Ended December 31, Change 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue Amount Percentage ($ in thousands) Other income (expense): Interest expense, related party $ (7,550 ) 2% $ (5,328 ) 2% $ (2,222 ) 42% Interest income (expense), net (4,409 ) 1% 6,534 3% (10,943 ) (167)% Loss on extinguishment of debt (27,487 ) 6% — 0% (27,487 ) (100)% Income from Employee Retention Credits — 0% 2,186 1% (2,186 ) (100)% Total other income (expense), net $ (39,446 ) 9% $ 3,392 1% $ (42,838 ) (1,263)% Other income (expense), net decreased by $42.8 million to $39.4 million in 2024 from $3.4 million in 2023.
Sales and marketing expenses as a percentage of total revenue decreased to 8% in 2024 from 14% in 2023 primarily due to the 90% increase in revenue from the comparable period in 2023. 73 General and Administrative Expenses Year Ended December 31, Change 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue Amount Percentage ($ in thousands) General and administrative expenses $ 71,125 16% $ 56,760 24% $ 14,365 25% General and administrative expenses increased by $14.3 million, or 25%, to $71.1 million in 2024 from $56.8 million in 2023.
General and Administrative Expenses Year Ended December 31, Change 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue Amount Percentage ($ in thousands) General and administrative expenses $ 71,125 16% $ 56,760 24% $ 14,365 25% General and administrative expenses increased by $14.3 million, or 25%, to $71.1 million in 2024 from $56.8 million in 2023.
The Redemption Price less capitalized principal amount and accrued interest to redemption date, of $24.6 million along with unamortized deferred issuance costs was classified in the income statement as Loss on Extinguishment of Debt. Income from Employee Retention Credit Employee retention credit consists of other income related to our submitted filings for CARES Employee Retention Credits.
The Redemption Price less capitalized principal amount and accrued interest to redemption date, of $24.6 million along with unamortized deferred issuance costs was classified in the income statement as Loss on Extinguishment of Debt.
In the meantime, we expect to be able to substantially reduce our planned capital expenditures for 2025. We intend to fund capital expenditures related to the expansion of capacity of our existing manufacturing facility with our existing cash balance and anticipated cash flows from operations.
Accordingly, we expect to be able to substantially reduce our planned capital expenditures for 2026. We intend to fund capital expenditures related to additional productivity improvements in our manufacturing facility with our existing cash balance and anticipated cash flows from operations.
The following table sets forth the total revenue for the periods presented: Year Ended December 31, 2024 2023 2021 ($ in thousands) Revenue: Energy industrial $ 145,867 $ 128,639 $ 124,807 Thermal barrier 306,832 110,079 55,557 Total $ 452,699 $ 238,718 $ 180,364 Energy industrial revenue accounted for 32%, 54%, and 69% of total revenue for the years ended December 31, 2024, 2023 and 2022, respectively.
The following table sets forth the total revenue for the periods presented: Year Ended December 31, 2025 2024 2023 ($ in thousands) Revenue: Energy industrial $ 102,198 $ 145,867 $ 128,639 Thermal barrier 168,905 306,832 110,079 Total $ 271,103 $ 452,699 $ 238,718 Energy industrial revenue accounted for 38%, 32%, and 54% of total revenue for the years ended December 31, 2025, 2024 and 2023, respectively.
Income Tax Expense The $1.7 million of income tax expense for the year ended December 31, 2024 is related to our maquiladora operations in Mexico.
Income Tax Expense The $1.7 million of income tax expense for the year ended December 31, 2024 was related to our maquiladora operations in Mexico. We did not incur income tax expense for the comparable period in 2023.
Net cash used in investing activities for 2024 and 2023 totaled $86.3 million and $175.5 million, respectively.
Net cash used in investing activities for 2025 and 2024 totaled $37.4 million and $86.3 million, respectively.
See note 2 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for information about these critical accounting policies, as well as a description of our other significant accounting policies. Revenue Recognition We recognize revenue from the sale of our energy industrial aerogel products and thermal barriers.
See Note (2) to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for information about these critical accounting policies, as well as a description of our other significant accounting policies.
Analysis of Cash Flow The following table summarizes our cash flows for the periods indicated: Year Ended December 31, 2024 2023 2022 ($ in thousands) Net cash provided by (used in): Operating activities $ 45,549 $ (42,612 ) $ (94,399 ) Investing activities (86,262 ) (175,455 ) (177,974 ) Financing activities 122,018 75,477 478,370 Net increase (decrease) in cash 81,305 (142,590 ) 205,997 Cash and cash equivalents, beginning of period 139,971 282,561 76,564 Cash and cash equivalents, end of period $ 221,276 $ 139,971 $ 282,561 Operating Activities During 2024, we provided $45.5 million in net cash from operating activities, as compared to the use of $42.6 million in net cash during 2023, a decrease in the use of cash of $88.2 million.
Analysis of Cash Flow The following table summarizes our cash flows for the periods indicated: Year Ended December 31, 2025 2024 2023 ($ in thousands) Net cash provided by (used in): Operating activities $ 32,872 $ 45,549 $ (42,612 ) Investing activities (37,449 ) (86,262 ) (175,455 ) Financing activities (58,129 ) 122,018 75,477 Net increase (decrease) in cash (62,706 ) 81,305 (142,590 ) Cash and cash equivalents, beginning of period 221,276 139,971 282,561 Cash and cash equivalents, end of period $ 158,570 $ 221,276 $ 139,971 Operating Activities During 2025, we generated $32.9 million in net cash from operating activities, as compared to the generation of $45.5 million in net cash during 2024, a decrease in cash provided by operations of $12.6 million.
Interest Expense, Convertible Note - Related Party Interest expense, convertible note - related party is net of the capitalized interest related to the $100.0 million in aggregate principal amount of our Convertible Senior PIK Toggle Notes. 69 Interest Income (Expense) Interest expense consists of interest expense and amortization or write-off of deferred financing costs related to our other financing arrangements including a failed sale and leaseback arrangement accounted as a financing transaction and interest earned on the cash balances invested in deposit accounts, money market accounts, and high-quality debt securities issued by the U.S. government.
Interest Income (Expense) Interest expense consists of interest expense and amortization or write-off of deferred financing costs related to our other financing arrangements, including our Amended MidCap Loan Facility, a failed sale and leaseback arrangement accounted as a financing transaction and interest earned on the cash balances invested in deposit accounts, money market accounts, and high-quality debt securities issued by the U.S. government.
In volume terms, product shipments decreased by 4.2 million square feet, or 13%, to 28.4 million square feet of aerogel products for the year ended December 31, 2023, as compared to 32.6 million square feet in the year ended December 31, 2022.
In volume terms, product shipments decreased by 7.9 million square feet, or 28%, to 20.6 million square feet of aerogel products for the year ended December 31, 2025, as compared to 28.5 million square feet for the year ended December 31, 2024.
Research and development expenses as a percentage of total revenue decreased to 7% during the year ended December 31, 2023 from 9% in the comparable period in 2022, primarily due to the decrease in professional fees.
Research and development expenses as a percentage of total revenue increased to 5% during the year ended December 31, 2025 from 4% in the comparable period in 2024 primarily due to the 40% decrease in revenue from the comparable period in 2024.
Products Our core businesses are organized into two reportable segments: Thermal Barrier and Energy Industrial. The following describes our key product offerings and new product innovations by reportable segment. Thermal Barrier We are actively developing a number of promising aerogel products and technologies for the electric vehicle (EV) market.
Products Our core businesses are organized into two reportable segments: Thermal Barrier and Energy Industrial. The following describes our key product offerings and new product innovations by reportable segment.
Although there are several other new accounting pronouncements issued by the FASB, we do not believe any of these accounting pronouncements had or will have a material impact on our Consolidated Financial Statements. Critical Accounting Policies and Estimates Our financial statements are prepared in accordance with accounting principles generally accepted in the United States of America.
We believe that the impact of recently issued accounting standards that are not yet effective will not have a material impact on our consolidated financial statements. Critical Accounting Policies and Estimates Our financial statements are prepared in accordance with accounting principles generally accepted in the United States of America.
We also expect that the patent enforcement actions, described in more detail under “Legal Proceedings” in Part I, Item 3 of this Annual Report on Form 10-K, if protracted, could result in significant legal expense over the medium to long-term.
We expect our general and administrative expenses to decrease as we continue our ongoing cost reduction measures, including reduced headcount. We also expect that the patent enforcement actions, described in more detail under “Legal Proceedings” in Part I, Item 3 of this Annual Report on Form 10-K, if protracted, could result in significant legal expenses over time.
Accordingly, we expect that our net income (loss), earnings per share and Adjusted EBITDA will vary from period to period. During 2024, we experienced strong volume growth in our thermal barrier products. As a result, we experienced total revenue growth of 90% during the year.
Accordingly, we expect that our net income (loss), earnings per share and Adjusted EBITDA will vary from period to period. During 2025, we experienced a significant decline in volume for our thermal barrier products, primarily driven by lower North American EV production levels. As a result, total revenue decreased by 40% compared to the prior year.
Thermal barrier revenue for the year ended December 31, 2023 included $97.5 million to a major U.S. 75 automotive OEM and $5.5 million to a major Asian automotive OEM. Thermal barrier revenue for the year ended December 31, 2022 included $45.8 million to a major U.S. automotive OEM and $5.1 million to a major Asian automotive OEM.
Thermal barrier revenue for the year ended December 31, 2025 included $160.3 million to a major U.S. automotive OEM. Thermal barrier revenue for the year ended December 31, 2024 included $291.2 million to a major U.S. automotive OEM and $5.9 million to a major Asian automotive OEM.
The $0.5 million decrease was the result of decreases in professional fees of $1.5 million, operating material and supplies costs of $0.7 million, compensation and related costs of $0.6 million, partially offset by an increase in depreciation and facility related expenses of $2.1 million and other research and development expenses of $0.2 million.
The $4.7 million decrease was the result of decreases in compensation and related costs of $4.4 million, driven by a headcount reduction, operating supplies and equipment of $0.4 million, and professional fees of $0.2 million, partially offset by an increase in other expenditures of $0.3 million.
The proceeds of the MidCap Loan Facility have been used in connection with the transaction contemplated by the Note Repurchase Agreement, the payment of related fees and expenses and for working capital of the Company and its subsidiaries. Loans borrowed under the MidCap Loan Facility mature on August 19, 2029.
The proceeds of the MidCap Loan Facility were used to repurchase our outstanding convertible note, the payment of related fees and expenses and for working capital. Loans borrowed under the MidCap Loan Facility mature on August 19, 2029.
During 2023, we used $42.6 million in net cash in operating activities, as compared to the use of $94.4 million in net cash during 2022, a decrease in the use of cash of $51.8 million.
During 2024, we generated $45.5 million in net cash from operating activities, as compared to the use of $42.6 million in net cash during 2023, a decrease in the use of cash of $88.2 million.
The $6.9 million increase was the result of $4.9 million of interest income, $2.2 million of Employee Retention Credits and a $(0.2) million net impact of capitalized interest relating to our Convertible Note in the comparable period in 2022. 77 Liquidity and Capital Resources Overview We have experienced significant losses and invested substantial resources since our inception to develop, commercialize and protect our aerogel technology and to build a manufacturing infrastructure capable of supplying aerogel products at the volumes and costs required by our customers.
Liquidity and Capital Resources Overview We have experienced significant losses and invested substantial resources since our inception to develop, commercialize and protect our aerogel technology and to build a manufacturing infrastructure capable of supplying aerogel products at the volumes and costs required by our customers.
GAAP measure, to Adjusted EBITDA for the years presented: Year Ended December 31, 2024 2023 2022 ($ in thousands) Net income (loss) $ 13,375 $ (45,811 ) $ (82,738 ) Depreciation and amortization 22,526 15,318 9,222 Stock-based compensation (1) 12,855 10,954 9,385 Other (income) expense 11,959 (3,392 ) 3,493 Loss on extinguishment of debt 27,487 — — Income tax expense 1,714 — — Adjusted EBITDA $ 89,916 $ (22,931 ) $ (60,638 ) (1) Represents non-cash stock-based compensation related to vesting and modifications of stock option grants, vesting of restricted stock units and vesting and modification of restricted common stock.
GAAP measure, to Adjusted EBITDA for the years presented: Year Ended December 31, 2025 2024 2023 ($ in thousands) Net income (loss) $ (389,552 ) $ 13,375 $ (45,811 ) Depreciation and amortization 45,157 22,526 15,318 Stock-based compensation (1) 9,173 12,855 10,954 Other (income) expense 8,930 11,959 (3,392 ) Loss on extinguishment of debt — 27,487 — Income tax expense 2,394 1,714 — Restructuring and demobilization costs 17,510 — — Loss on disposal of property, plant and equipment 18,162 — — Impairment of property, plant and equipment 291,164 — — Adjusted EBITDA $ 2,938 $ 89,916 $ (22,931 ) (1) Represents non-cash stock-based compensation related to vesting and modifications of stock option grants, restricted stock units (RSUs) and restricted common stock, and cash settled RSUs issued in March 2025. 68 The following table presents a reconciliation of net income (loss), the most directly comparable U.S.
We are also continuing to monitor the impact on our material costs, manufacturing expense, and cost of product revenue from engaging one or more external manufacturing facilities in China to supply our aerogel products.
We expect that manufacturing expense will decline in absolute dollars, due to ongoing cost reduction efforts, and increase as a percentage of revenue during 2026 due to lower expected revenues from the thermal barrier business. 70 We are also continuing to monitor the impact on our material costs, manufacturing expense, and cost of product revenue from engaging one or more external manufacturing facilities in China to supply our aerogel products.
Sales and Marketing Expenses Sales and marketing expenses consist primarily of personnel costs, incentive compensation, marketing programs, travel and related costs, consulting expenses and facilities related costs.
We expect to continue to devote substantial resources to the development of new aerogel technologies. Sales and Marketing Expenses Sales and marketing expenses consist primarily of personnel costs, incentive compensation, marketing programs, travel and related costs, consulting expenses and facilities related costs.
This ASU is effective for our fiscal year 2024 and interim periods in fiscal year 2025. 81 Standards to be Implemented In December 2023, the FASB issued ASU 2023-09 Income Taxes (Topic 740) Improvements to Income Tax Disclosures that requires disclosure of disaggregated income taxes paid, prescribes standard categories for the components of the effective tax rate reconciliation, and modifies other income tax-related disclosures.
Prior to their effective date, we evaluate the pronouncements to determine the potential effects of adoption to our consolidated financial statements. 84 Standards Implemented Since December 31, 2024 In December 2023, the FASB issued ASU 2023-09 Income Taxes (Topic 740) Improvements to Income Tax Disclosures (ASU 2023-09) that requires disclosure of disaggregated income taxes paid, prescribes standard categories for the components of the effective tax rate reconciliation, and modifies other income tax-related disclosures including additional information about income taxes paid.
The increase in total cost of revenue was principally driven by the increase in material costs due to higher volume and overhead costs and additional resources to support our expected higher run-rate revenue in future periods for both our energy industrial and thermal barrier products.
The increase in total cost of revenue was principally driven by the increase in material costs due to higher volume and overhead costs and additional resources to support our expected higher run-rate revenue in future periods for both our energy industrial and thermal barrier products. 79 Research and Development Expenses Year Ended December 31, Change 2024 2023 Amount Percentage of Revenue Amount Percentage of Revenue Amount Percentage ($ in thousands) Research and development expenses $ 18,050 4% $ 16,356 7% $ 1,694 10% Research and development expenses increased by $1.7 million, or 10%, to $18.1 million in 2024 from $16.4 million in 2023.