Biggest changeYear ended December 31, 2024 2023 $ Change % Change Revenue Product revenue $ 50,079 $ 34,568 $ 15,511 45 % Subscription revenue 15,365 10,657 4,708 44 % Total revenue 65,444 45,225 20,219 45 % Cost of revenue Product cost of goods sold 8,209 6,630 1,579 24 % Subscription cost of revenue 485 432 53 12 % Total cost of revenue 8,694 7,062 1,632 23 % Gross profit 56,750 38,163 18,587 49 % Operating expenses: Research and development 13,562 8,995 4,567 51 % Sales and marketing 49,055 38,922 10,133 26 % General and administrative 33,842 20,287 13,555 67 % Total operating expenses 96,459 68,204 28,255 41 % Loss from operations (39,709 ) (30,041 ) (9,668 ) 32 % Interest and other income (expense), net (746 ) 588 (1,334 ) NM* Loss before provision for income taxes (40,455 ) (29,453 ) (11,002 ) 37 % Provision for income taxes — (11 ) 11 -100 % Net loss $ (40,455 ) $ (29,464 ) $ (10,991 ) 37 % * Not Meaningful Comparison of the Years ended December 31, 2024 and 2023 Revenue Product revenue for the year ended December 31, 2024 (“fiscal year 2024”), increased $15.5 million, or 45%, compared to the year ended December 31, 2023 (“fiscal year 2023”).
Biggest changeYear ended December 31, 2025 2024 $ Change % Change Revenue Product revenue $ 67,335 $ 50,079 $ 17,256 34 % Subscription revenue 21,728 15,365 6,363 41 % Total revenue 89,063 65,444 23,619 36 % Cost of revenue Product cost of goods sold 10,128 8,209 1,919 23 % Subscription cost of revenue 661 485 176 36 % Total cost of revenue 10,789 8,694 2,095 24 % Gross profit 78,274 56,750 21,524 38 % Operating expenses: Research and development 19,143 13,562 5,581 41 % Sales and marketing 73,082 49,055 24,027 49 % General and administrative 44,451 33,842 10,609 31 % Total operating expenses 136,676 96,459 40,217 42 % Loss from operations (58,402 ) (39,709 ) (18,693 ) 47 % Interest and other income (expense), net 4,990 (746 ) 5,736 NM* Loss before provision for income taxes (53,412 ) (40,455 ) (12,957 ) 32 % Provision for income taxes — — — — Net loss $ (53,412 ) $ (40,455 ) $ (12,957 ) 32 % * Not Meaningful Comparison of the Years ended December 31, 2025 and 2024 Revenue Product revenue for the year ended December 31, 2025 (“fiscal year 2025”), increased $17.3 million, or 34%, compared to the year ended December 31, 2024 (“fiscal year 2024”).
We have based this estimate on assumptions that may prove to be wrong, and we could deplete our capital resources sooner than we expect.
We have based this estimate on assumptions that may prove to be wrong, and we could deplete our capital resources sooner than we expect.
We may experience lower than expected cash generated from operating activities or greater than expected capital expenditures, cost of revenue, or operating expenses, and may need to raise additional capital to fund operations, further research and development activities, or acquire, invest in, or in-license other businesses, assets, or technologies.
We may experience lower than expected cash generated from operating activities or greater than expected capital expenditures, cost of revenue, or operating expenses, and may need to raise additional capital to fund operations, further research and development activities, or acquire, invest in, or in-license other businesses, assets, or technologies.
Financing Activities Net cash provided by financing activities during fiscal year 2024, consisted primarily of $187.8 million in proceeds from the IPO net of issuance costs, $7.6 million in net proceeds from debt issuance, and $1.1 million in proceeds from the exercise of options.
Net cash provided by financing activities during fiscal year 2024 consisted primarily of $187.8 million in proceeds from the IPO net of issuance costs, $7.6 million in net proceeds from debt issuance, and $1.1 million in proceeds from the exercise of options.
Operating Expenses Research and Development Research and development expenses are incurred in connection with the advancement of the Ceribell System with the goal to improve and expand on our existing system and indications. Research and development expenses consist primarily of engineering, product development, regulatory activities, consulting services, materials, depreciation, and other costs associated with products and technologies being developed.
Operating Expenses Research and Development Research and development expenses are incurred in connection with the advancement of the Ceribell System with the goal to improve and expand on the existing Ceribell System and indications. Research and development expenses consist primarily of engineering, product development, regulatory activities, consulting services, materials, depreciation, and other costs associated with products and technologies being developed.
By making EEG more accessible and enabling continuous monitoring through the power of AI, the Ceribell System enables clinicians to more rapidly and accurately diagnose and manage patients at risk of seizure in the acute care setting, resulting in improved patient outcomes and hospital and payer economics.
By making EEG more accessible and enabling continuous monitoring through the power of AI, the Ceribell System enables clinicians to more rapidly and accurately diagnose and manage patients at risk of seizure and delirium in the acute care setting, resulting in improved patient outcomes and hospital and payer economics.
We invest in research and development efforts with the goal of driving continuous improvements in our current system and solutions and expanding the clinical application of our system and AI algorithms, in the acute care setting and beyond.
We invest in research and development efforts with the goal of driving continuous improvements in our current system and solutions and expanding the clinical application of the Ceribell System and AI algorithms, in the acute care setting and beyond.
We are initially focused on becoming the standard of care for the detection and management of seizures in the acute care setting, where the technological and operational limitations of conventional EEG systems have contributed to significant delays in seizure diagnosis and suboptimal patient care and clinical outcomes, as well as a high economic burden for hospitals and the healthcare system.
We initially focused on becoming the standard of care for the detection and management of seizures in the acute care setting, where the technological and operational limitations of conventional EEG systems have contributed to significant delays in seizure and delirium diagnosis and suboptimal patient care and clinical outcomes, as well as a high economic burden for hospitals and the healthcare system.
Product revenue is generated by the sale of our disposable headbands that are intended for single patient use. Subscription revenue is generated by monthly subscription fees charged to our hospital customers for use of Clarity, recorders, and our portal. Revenue from sales of headbands is recognized at a point in time upon transfer of control of the product.
Product revenue is generated by the sale of our disposable Wearables that are intended for single patient use. Subscription revenue is generated by monthly subscription fees charged to our hospital customers for use of Clarity, recorders, and our portal. Revenue from sales of Wearables is recognized at a point in time upon transfer of control of the product.
For example, the number of patients in the intensive care unit is typically lower during the summer months. Cost of Revenue Cost of revenue consists primarily of the cost of materials and labor to manufacture headbands and depreciation of the manufacturing cost of recorders, as well as third-party hosting fees and personnel-related expenses for our subscription cost of revenue.
For example, the number of patients in the intensive care unit is typically lower during the summer months. Cost of Revenue Cost of revenue consists primarily of the cost of materials and labor to manufacture Wearables and depreciation of the manufacturing cost of recorders, as well as third-party hosting fees and personnel-related expenses for our subscription cost of revenue.
These deferred tax assets primarily include net operating loss carryforwards and we expect to maintain this full valuation allowance for the foreseeable future as it is not more likely than not the deferred tax assets will be realized based on our history of losses. 79 Results of Operations for the Years ended December 31, 2024 and 2023 The following tables set forth our results of operations for the periods presented (in thousands, except percentages) and as a percentage of our revenue for those periods.
These deferred tax assets primarily include net operating loss carryforwards and we expect to maintain this full valuation allowance for the foreseeable future as it is not more likely than not the deferred tax assets will be realized based on our history of losses. 80 Results of Operations for the Years ended December 31, 2025 and 2024 The following tables set forth our results of operations for the periods presented (in thousands, except percentages) and as a percentage of our revenue for those periods.
The maturity date of VLSA is March 1, 2029. Concurrent with the VLSA, we also entered into the Revolving Facility for a line of credit of up to $10.0 million. The Revolving Facility matures on February 6, 2026.
The maturity date of the VLSA is March 1, 2029. Concurrent with the VLSA, we also entered into the Revolving Facility for a line of credit of up to $10.0 million. The Revolving Facility matured on February 6, 2026.
Our research and development initiatives are focused on introducing enhancements, features, and improvements aimed at increasing the value provided by our system for diagnosing and monitoring seizures in the acute care setting.
Our research and development initiatives are focused on introducing enhancements, features, and improvements aimed at increasing the value provided by the Ceribell System for diagnosing and monitoring seizures and delirium in the acute care setting.
In evaluating similarity, we consider factors such as industry, stage of life cycle, and size. • Risk-Free Interest Rate —The risk-free interest rate is calculated using the average of the published interest rates of U.S.
In evaluating similarity of the peer group, we consider factors such as industry, stage of life cycle, and size. • Risk-Free Interest Rate —The risk-free interest rate is calculated using the average of the published interest rates of U.S.
We have developed the Ceribell System, a novel, point-of-care EEG platform specifically designed to address the unmet needs of patients in the acute care setting. By combining proprietary, highly portable, and rapidly deployable hardware with sophisticated AI-powered algorithms, the Ceribell System enables rapid diagnosis and continuous monitoring of patients with neurological conditions.
We have developed the Ceribell System, a novel, point-of-care EEG platform specifically designed to address the unmet needs of patients in the acute care setting. By combining proprietary, highly portable, and rapidly deployable hardware with sophisticated artificial intelligence (“AI”)-powered algorithms, the Ceribell System enables rapid diagnosis and continuous monitoring of patients with neurological conditions.
We also anticipate incurring additional expenses associated with operating as a public company, including increased expenses related to audit, legal, regulatory, compliance, director and officer insurance, investor and public relations, and tax-related services associated with maintaining compliance with the rules and regulations of the SEC and standards applicable to companies listed on a national securities exchange.
We also anticipate incurring additional expenses associated with operating as a public company, including increased expenses related to audit, legal, regulatory, compliance, director and officer insurance, investor and public relations, and tax-related services associated with maintaining compliance with the rules and regulations of the SEC and standards applicable to companies listed on a national securities exchange and intellectual property enforcement activities.
Our Business Model Key Factors Affecting Our Results of Operations and Performance We believe there are several important factors that have impacted and that we expect will impact our operating performance and results of operations for the foreseeable future. These factors include: • Adoption of the Ceribell System in new accounts.
Key Factors Affecting Our Results of Operations and Performance We believe there are several important factors that have impacted and that we expect will impact our operating performance and results of operations for the foreseeable future. These factors include: • Adoption of the Ceribell System by new accounts.
Our hardware is composed of a disposable, flexible headband and a pocket-sized, battery-operated recorder used to capture and wirelessly transmit EEG signals. The hardware is simple to use and, after approximately one hour of training, can be applied within minutes by any non-specialized healthcare professional.
Our hardware is composed of disposable, flexible headbands and headcaps (“Wearables”) and a pocket-sized, rechargeable battery-operated recorder used to capture and wirelessly transmit EEG signals. The hardware is simple to use and, after approximately one hour of training, can be applied within minutes by any non-specialized healthcare professional.
The following weighted-average assumptions were used for the Black-Scholes option pricing model: Year ended December 31, 2024 2023 Expected term (in years) 5.4 5.1 Expected volatility 68.0 % 75.4 % Risk-free interest rate 4.1 % 4.2 % Dividend yield — — Upon the completion of our IPO, our common stock was publicly traded and is therefore subject to potentially significant fluctuations in the market price.
The following weighted-average assumptions were used for the Black-Scholes option pricing model: Year ended December 31, 2025 2024 Expected term (in years) 5.0 5.4 Expected volatility 61.1 % 68.0 % Risk-free interest rate 3.9 % 4.1 % Dividend yield — — Upon the completion of our IPO, our common stock was publicly traded and is therefore subject to potentially significant fluctuations in the market price.
Our actual results may differ from these estimates under different assumptions or conditions. 83 See Note 2 to our financial statements elsewhere in this Annual Report for information about our significant accounting policies and how estimates are involved in the preparation of our financial statements.
Our actual results may differ from these estimates under different assumptions or conditions. 84 See Notes 2 and 3 to our financial statements elsewhere in this Annual Report for information about our significant accounting policies and how estimates are involved in the preparation of our financial statements.
Since our inception, we have devoted substantially all of our resources to organizing and staffing our company, research and development activities, obtaining FDA clearances and other regulatory milestones, business planning, raising capital, establishing and maintaining our intellectual property portfolio, conducting direct sales efforts and marketing initiatives, conducting clinical studies, and providing general and administrative support for these operations. 76 As of December 31, 2024, we had an accumulated deficit of $166.9 million.
Since our inception, we have devoted substantially all of our resources to organizing and staffing our company, research and development activities, obtaining FDA clearances and other regulatory milestones, business planning, raising capital, establishing and maintaining our intellectual property portfolio, conducting direct sales efforts and marketing initiatives, conducting clinical studies, and providing general and administrative support for these operations. 77 As of December 31, 2025, we had an accumulated deficit of $220.4 million.
Product revenue growth was primarily driven by the addition of new customers and an increase in utilization of headbands and resulting headband sales, driven by continued customer education that resulted in increased awareness and adoption of our products. Subscription revenue for fiscal year 2024, increased $4.7 million, or 44%, compared to fiscal year 2023.
Product revenue growth was primarily driven by the addition of new customers and an increase in utilization of headbands and resulting headband sales, driven by continued customer education that resulted in increased awareness and adoption of our products. Subscription revenue for fiscal year 2025 increased $6.4 million, or 41%, compared to fiscal year 2024.
We manage all aspects of manufacturing, supply chain, and distribution of the headband and recorder from our facilities in Sunnyvale, California. Contract manufacturers in China assemble the Ceribell headband, with final inspection and labeling completed at our California facilities. We have dual sources for major components of the headband.
We manage all aspects of manufacturing, supply chain, and distribution of the Wearables and recorder from our facilities in Sunnyvale, California. Contract manufacturers in China and Vietnam assemble the headbands, with final inspection and labeling completed at our California facilities. We have dual sources for major components of the Wearables.
The increase was primarily due to increased revenue and decreased cost of goods sold per unit, as non-variable costs are allocated among a larger number of units. Operating Expenses Research and Development Expenses Research and development expenses increased $4.6 million, or 51%, for fiscal year 2024, compared to fiscal year 2023.
The increase was primarily due to increased revenue and decreased cost of goods sold per unit, as non-variable costs are allocated among a larger number of units. Operating Expenses Research and Development Expenses Research and development expenses increased $5.6 million, or 41%, for fiscal year 2025, compared to fiscal year 2024.
Funding Requirements Based on our current operating plan, we believe that the net proceeds from our IPO together with the expected cash generated from revenue transactions with customers and our existing cash and cash equivalents, will be sufficient to fund our planned operating expenses and capital expenditure requirements for at least the next 12 months.
Funding Requirements Based on our current operating plan, we believe that the expected cash generated from revenue transactions with customers and our existing cash and cash equivalents and marketable securities will be sufficient to fund our planned operating expenses and capital expenditure requirements for at least the next 12 months.
The recorder is integrated with a proprietary web-based portal that allows neurologists to remotely access EEG data in real time from any web-enabled device. EEG data captured by the recorder is interpreted by our proprietary AI-powered seizure detection algorithm, Clarity TM , which continuously monitors the patient’s EEG signal and can support the clinician’s real-time assessment of seizure activity.
The recorder is integrated with a proprietary web-based portal that allows neurologists to remotely access EEG data in real time from any web-enabled device. EEG data captured by the recorder is interpreted by our proprietary AI-powered seizure detection algorithms, which continuously monitor the patient’s EEG signal and can support the clinician’s real-time assessment of seizure activity and delirium.
Our gross margin may fluctuate from period to period, based upon the factors described above and in the section titled “Risk Factors” included elsewhere in this Annual Report.
Our gross margin may fluctuate from period to period, based upon the factors described above and in the section titled “Risk Factors” included elsewhere in this Annual Report on Form 10-K.
Our future capital needs will depend upon many factors, including: • the market acceptance of our products; • the cost and pace of developing new products and our research and development activities; • the scope, timing and costs of supporting sales growth and expansion of our commercial organization; • the costs associated with any product recall that may occur; • the costs associated with the manufacturing of our products at increased production levels or in different countries; • the costs of attaining, defending, and enforcing our intellectual property rights; • whether we acquire third-party products or technologies; • the terms and timing of any other collaborative, licensing, and other arrangements that we may establish; • the emergence of competing technologies or other adverse market developments; • our ability to raise additional funds to finance our operations should they be needed in the future; • debt service requirements; and • the costs associated with being a public company. 82 Cash Flows The following table shows a summary of our cash flows for each of the periods presented: Year ended December 31, 2024 2023 (in thousands) Net cash used in operating activities $ (35,043 ) $ (29,159 ) Net cash used in investing activities $ (1,598 ) $ (1,763 ) Net cash provided by (used in) financing activities $ 196,516 $ (2,818 ) Operating Activities Net cash used in operating activities during fiscal year 2024, consisted primarily of our net loss of $40.5 million, offset by non-cash charges of stock-based compensation of $5.4 million, depreciation and amortization of $1.1 million, and the change in fair value of our redeemable convertible preferred stock warrants.
Our future capital needs will depend upon many factors, including: • the market acceptance of our products; • the cost and pace of developing new products and our research and development activities; • the scope, timing and costs of supporting sales growth and expansion of our commercial organization; • the costs associated with any product recall that may occur; • the costs associated with the manufacturing of our products at increased production levels or in different countries; • the costs of attaining, defending, and enforcing our intellectual property rights; • whether we acquire third-party products or technologies; • the terms and timing of any other collaborative, licensing, and other arrangements that we may establish; • the emergence of competing technologies or other adverse market developments; • our ability to raise additional funds to finance our operations should they be needed in the future; • debt service requirements; and • the costs associated with being a public company. 83 Cash Flows The following table shows a summary of our cash flows for each of the periods presented: Year ended December 31, 2025 2024 (in thousands) Net cash used in operating activities $ (40,808 ) $ (35,043 ) Net cash used in investing activities $ (118,137 ) $ (1,598 ) Net cash provided by financing activities $ 5,051 $ 196,516 Operating Activities Net cash used in operating activities during fiscal year 2025 consisted primarily of our net loss of $53.4 million, offset by non-cash charges of stock-based compensation of $12.2 million and depreciation and amortization of $1.3 million.
The increase was primarily due to an increase of $2.6 million in personnel and related expenses directly associated with an increase in headcount and stock-based compensation, as well as an increase of $1.5 million in clinical study and professional expenses.
The increase was primarily due to an increase of $3.7 million in personnel and related expenses directly associated with an increase in headcount and stock-based compensation, as well as an increase of $1.7 million in clinical study and professional expenses.
Sources of Liquidity As of December 31, 2024, our principal sources of liquidity consisted of $194.4 million of cash and cash equivalents and $20.0 million of term loans. On February 6, 2024, we entered into the VLSA with SVB and Horizon. The VLSA provides a term loan commitment of $50.0 million.
Sources of Liquidity As of December 31, 2025, our principal sources of liquidity consisted of $159.3 million of cash and cash equivalents and marketable securities and $20.0 million of term loans. On February 6, 2024, we entered into the VLSA with SVB and Horizon. The VLSA provides a term loan commitment of $50.0 million.
We believe the platform nature of 77 our system will enable us to efficiently deploy it for use in other serious neurological conditions beyond seizures, and we have begun the technical validation process for several additional indications. Components of our Results of Operations Revenue We generate revenue from two recurring sources.
We believe the platform nature of the Ceribell System will enable us to efficiently deploy it for use in other serious neurological conditions beyond seizures and delirium to additional indications. Components of our Results of Operations Revenue We generate revenue from two recurring sources.
To date, we have funded our operations primarily through proceeds from the sale of shares of our stock, including common stock and redeemable convertible preferred stock, term loan proceeds, and cash generated from the sale of headbands and subscriptions. As of December 31, 2024, we had $194.4 million in cash and cash equivalents.
To date, we have funded our operations primarily through proceeds from the sale of shares of our stock, including common stock and redeemable convertible preferred stock, term loan proceeds, and cash generated from the sale of Wearables and subscriptions. As of December 31, 2025, we had $159.3 million in cash and cash equivalents and marketable securities.
Sales and Marketing Expenses Sales and marketing expenses increased $10.1 million, or 26%, for fiscal year 2024, compared to fiscal year 2023. The increase was primarily due to an increase in personnel and related expenses directly associated with an increase in headcount and commissions.
Sales and Marketing Expenses Sales and marketing expenses increased $24.0 million, or 49%, for fiscal year 2025, compared to fiscal year 2024. The increase was primarily due to an increase in personnel and related expenses directly associated with an increase in headcount and commissions.
We expect that our revenue will continue to fluctuate quarter-to-quarter due to a variety of factors, including the potential success of our sales force in extending adoption of the Ceribell System to new accounts and expanding the utilization of our system in existing accounts.
Our revenue fluctuates primarily based on the number of active accounts and the volume of Wearable usage. 78 We expect that our revenue will continue to fluctuate quarter-to-quarter due to a variety of factors, including the potential success of our sales force in extending adoption of the Ceribell System to new accounts and expanding the utilization of the Ceribell System in existing accounts.
Interest and Other Income (Expense), net Interest and other income (expense), net is primarily interest income on our cash and cash equivalents, interest expense on our term loans, and change in the fair value of the warrant liability. Interest expense primarily consists of interest on our term loans and a non-cash interest charge related to amortization of debt issuance costs.
Interest and Other Income (Expense), net Interest and other income (expense), net is primarily interest income on our cash and cash equivalents and marketable securities. Interest expense primarily consists of interest on our term loans and a non-cash interest charge related to amortization of debt issuance costs.
Even at facilities with access to the Ceribell System, clinicians may not use Ceribell on all eligible patients if they are not fully aware of the risks of seizures and the benefits of our solution.
Our CAMs work to educate our customers to raise awareness of our technology, non-convulsive seizures, and the risks of delayed treatment. Even at facilities with access to the Ceribell System, clinicians may not use Ceribell on all eligible patients if they are not fully aware of the risks of seizures and the benefits of our solution.
Gains and losses related to the change in fair value of the redeemable convertible preferred stock warrant liability issued as a part of our term loans are recognized in the income statement each quarter until the warrants are exercised, expire, or become exercisable into shares of common stock.
Gains and losses related to the change in fair value of the redeemable convertible preferred stock warrant liability issued as a part of our term loans were recognized in the income statement each quarter until the warrants were converted to common stock warrants immediately prior to the IPO.
We estimated the expected term based on an average of the midpoint of the requisite service period and the contractual term, and the historical exercise behavior. • Expected Volatility —Since there has been no public market for our common stock and lack of company specific historical volatility, we have determined the share price volatility for options granted based on an analysis of the volatility of a peer group of publicly traded companies.
We estimated the expected term based on an average of the midpoint of the requisite service period and the contractual term, and the historical exercise behavior. • Expected Volatility —Since there is limited company specific historical volatility, we have determined the share price volatility for options granted based on a weighted analysis of the volatility of a peer group of publicly traded companies in addition to the Company's historical volatility.
General and Administrative Expenses General and administrative expenses increased $13.6 million, or 67%, for fiscal year 2024, compared to fiscal year 2023.
General and Administrative Expenses General and administrative expenses increased $10.6 million, or 31%, for fiscal year 2025, compared to fiscal year 2024.
While our current commercial focus is on the United States, we have received a CE Mark for the Ceribell System in Europe, and we intend to pursue additional regulatory clearances in Europe and elsewhere outside of the United States. We also plan to engage in market access initiatives in attractive international regions in which we see significant opportunity.
While our current commercial focus is on the United States, we have received a CE Mark for the Ceribell System in Europe, and we intend to pursue additional regulatory clearances in Europe and elsewhere outside of the United States in the future.
To date, the Ceribell System has been adopted by more than 500 active accounts, ranging from top academic centers to small community hospitals, and has been used to care for over 200,000 patients. For information regarding how patient care and clinical outcomes are measured, see “Business—Market Overview—Challenges of Managing Seizures in the Acute Care Setting” in this Annual Report.
As of December 31, 2025, the Ceribell System has been adopted by more than 600 hospitals, ranging from top academic centers to small community hospitals. For information regarding how patient care and clinical outcomes are measured, see “Business—Market Overview—Challenges of Managing Seizures in the Acute Care Setting” included elsewhere in this Annual Report on Form 10-K.
Investing Activities Net cash used in investing activities during fiscal years 2024 and 2023 was $1.6 million and $1.8 million, respectively, and consisted of purchases of equipment and purchases of components for recorders provided to customers.
Investing Activities Net cash used in investing activities during fiscal years 2025 and 2024 was $118.1 million and $1.6 million, respectively, and consisted of purchases of marketable securities in 2025 and equipment and purchases of components for recorders provided to customers for both periods. This was offset by the maturity of marketable securities in 2025.
The increase in subscription cost of revenue was primarily due to increased hosting costs for new active accounts for subscriptions and incremental recorder depreciation associated with new subscriptions.
The increase in subscription cost of revenue was primarily due to increased hosting costs for new active accounts for subscriptions and incremental recorder depreciation associated with new subscriptions. 81 Gross Profit and Gross Margin The following table sets forth our gross profit and gross margin for the periods presented (in thousands, except percentages).
We generally recognize subscription revenue ratably over the related contractual term beginning on the date that the system is made available to a customer. Our revenue fluctuates primarily based on the number of active accounts and the volume of headband usage.
We generally recognize subscription revenue ratably over the related contractual term beginning on the date that the Ceribell System is made available to a customer.
Changes in the assumptions can materially affect the fair value and ultimately the amount of stock-based compensation expense recognized. These inputs are subjective and generally require significant analysis and judgment to develop.
These inputs are subjective and generally require significant analysis and judgment to develop. Changes in the following assumptions and judgments can materially affect the estimate of the fair value of stock-based compensation: • Expected Term —The expected term represents the period that the stock-based awards are expected to be outstanding.
The increase in cost of goods sold for products was primarily due to an increase in headband sales to new and existing active accounts, partially offset by a decrease in the unit cost of materials. Subscription cost of revenue for fiscal year 2024, increased $0.05 million, or 12%, compared to fiscal year 2023.
Subscription revenue growth was primarily driven by an increase in new customer subscriptions. Cost of Revenue Product cost of revenue for fiscal year 2025 increased $1.9 million, or 23%, compared to fiscal year 2024. The increase in cost of goods sold for products was primarily due to an increase in headband sales to new and existing active accounts.
Interest and Other Income (Expense), net Interest and other income (expense), net decreased $1.3 million for fiscal year 2024, compared to fiscal year 2023.
Interest and Other Income (Expense), net Interest and other income (expense), net increased $5.7 million for fiscal year 2025, compared to fiscal year 2024.
Costs for certain activities, such as clinical studies and clinical trials, are generally recognized based on an evaluation of the progress to completion of specific tasks using information and data provided to us by our vendors and collaborators. 78 We expect our research and development expenses to increase as we continue to improve and optimize our algorithm, leverage our platform to expand indications, and develop products for use beyond the acute care setting.
Costs for certain activities, such as clinical studies and clinical trials, are generally recognized based on an evaluation of the progress to completion of specific tasks using information and data provided to us by our vendors and collaborators.
We believe that any facility with either an ICU or ED, or both, has patients who could benefit from the Ceribell System, because the patients arriving at such facilities may experience seizures triggered by the conditions leading them to seek acute medical care.
There are approximately 6,000 acute care facilities with an Intensive Care Unit (“ICU”) or Emergency Department (“ED”) or both in the United States that we believe could benefit from the Ceribell System because the patients arriving at such facilities may experience seizures or delirium triggered by the conditions leading them to seek acute medical care.
Net operating assets increased due to the timing of inventory purchases and accounts receivable due to the overall increase in sales in fiscal year 2023. Net operating liabilities increased primarily due to increased accrued payroll, bonus, and commissions due to increased headcount.
Additionally we had a net increase in operating assets of $5.3 million and a net increase in operating liabilities of $5.9 million. Net operating assets increased due to the timing of inventory purchases and accounts receivable due to the overall increase in sales in fiscal year 2025. Net operating liabilities increased primarily due to timing of payments.
We expect our sales and marketing expenses to increase for the foreseeable future as we continue to increase the size of our sales organization and market penetration in the United States, seek to expand indications, and potentially establish an international presence by pursuing marketing authorizations and engaging in other market access initiatives in international regions in which we see significant potential opportunity.
Sales and Marketing Sales and marketing expenses consist primarily of employee-related costs, including salaries, commissions, bonuses, benefits, travel, and stock-based compensation as well as investments in marketing initiatives to increase market awareness of our technology and the prevalence of seizures and delirium in critically ill patient populations, including expenses related to travel, conferences, trade shows, and consulting services. 79 We expect our sales and marketing expenses to increase for the foreseeable future as we continue to increase the size of our sales organization and market penetration in the United States, expand indications, and potentially establish an international presence by pursuing marketing authorizations and engaging in other market access initiatives in international regions in which we see significant potential opportunity.
The decrease was primarily due to a $0.4 million increase in interest expense related to debt and $1.5 million in other expense as a result of the change in fair value of the warrant liability, offset by an increase of $0.5 million interest income related to an increase in cash. 81 Liquidity and Capital Resources Since inception, we have financed operations primarily through the net proceeds we have received from the sales of our preferred stock and common stock as well as net proceeds from our term loans and cash generated from the sale of headbands and Clarity subscriptions.
The increase in interest income was primarily due to higher balances of cash equivalents and marketable securities, resulting from the investment of IPO proceeds. 82 Liquidity and Capital Resources Since inception, we have financed operations primarily through the net proceeds we have received from the sales of our preferred stock and common stock as well as net proceeds from our term loans and cash generated from the sale of headbands and Clarity subscriptions.
The increase was primarily due to an increase of $7.9 million in personnel and related expenses directly associated with an increase in headcount and stock-based compensation, an increase of $4.3 million in legal, accounting, and professional service fees related to our transition to a public company, and an increase of $1.1 million in administrative expenses driven by increased software, facilities, and other administrative expenses.
The increase was primarily due to an increase of $5.6 million in personnel and related expenses directly associated with an increase in headcount and stock-based compensation, an increase of $4.7 million in legal, accounting, and professional service fees related to our transition to a public company, and costs associated with intellectual property enforcement activities, including a new patent infringement claim initiated in July 2025.
Net cash used in operating activities during fiscal year 2023, consisted primarily of our net loss of $29.5 million, offset by non-cash charges of stock-based compensation of $2.7 million, and a net increase in operating assets of $6.1 million, partially offset by a net increase in operating liabilities of $2.4 million.
Net cash used in operating activities during fiscal year 2024 consisted primarily of our net loss of $40.5 million, offset by non-cash charges of stock-based compensation of $5.4 million, depreciation and amortization of $1.1 million, and the change in fair value of our redeemable convertible preferred stock warrants.
There were 118,999 performance-based option awards outstanding as of December 31, 2024 and 64,527 performance-based option awards outstanding as of December 31, 2023. We account for forfeitures as they occur. Determining the grant date fair value of options using the Black-Scholes option pricing model requires management to make assumptions and judgments.
We account for forfeitures as they occur. 85 Determining the grant date fair value of options using the Black-Scholes option pricing model requires management to make assumptions and judgments. Changes in the assumptions can materially affect the fair value and ultimately the amount of stock-based compensation expense recognized.
Critical Accounting Estimates Our management’s discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with GAAP.
Operating leases — As of December 31, 2025, estimated contractual obligations for operating lease payments were $2.7 million due within 25 months. Critical Accounting Policies, Significant Judgments, and Use of Estimates Our management’s discussion and analysis of our financial condition and results of operations are based on our financial statements, which have been prepared in accordance with GAAP.
We are currently focused on becoming the standard of care for the detection and management of seizures in the acute care setting. There are approximately 6,000 acute care facilities in the United States that we believe could benefit from our system.
We believe that all acute care facilities in the United States can benefit from the Ceribell System, and our goal is to establish the Ceribell System as the standard of care for the detection and management of seizures in critically ill patients.
Please refer to the section titled “Liquidity” in Note 1 for a discussion of changes in commitments. Operating leases — As of December 31, 2024, estimated contractual obligations for operating lease payments were $2.4 million due within 28 months.
Contractual Obligations and Commitments Our contractual obligations as of December 31, 2025 include: Debt — Principal payments required on long-term debt outstanding as of December 31, 2025, was $20.0 million. Please refer to the section titled “Liquidity” in Note 1 for a discussion of changes in commitments.
Currently, many patients are not promptly monitored by EEG, as a physician may not be aware of the risk of seizures in a given patient population. Our CAMs work to raise awareness of our technology as well as, non-convulsive seizures generally, and the risks of delayed treatment.
We believe there are over three million acute care patients in the United States who should be monitored with EEG each year due to high risk of seizures. Currently, many of these patients are not promptly monitored by EEG, as a physician may not be aware of the risk of seizures in a given patient population.
Subscription revenue growth was primarily driven by an increase in new customer subscriptions. Cost of Revenue Product cost of revenue for fiscal year 2024, increased $1.6 million, or 24%, compared to fiscal year 2023.
Subscription cost of revenue for fiscal year 2025 increased $0.2 million, or 36%, compared to fiscal year 2024.
Gross Profit and Gross Margin The following table sets forth our gross profit and gross margin for the periods presented (in thousands, except percentages). 80 Year ended December 31, 2024 2023 $ Change % Change Gross profit $ 56,750 $ 38,163 $ 18,587 49 % Gross margin 87 % 84 % 3 % Product gross profit 41,870 27,938 13,932 50 % Product gross margin 84 % 81 % 3 % Subscription gross profit 14,880 10,225 4,655 46 % Subscription gross margin 97 % 96 % 1 % Gross profit increased $18.6 million, or 49%, for fiscal year 2024, compared to fiscal year 2023.
Year ended December 31, 2025 2024 $ Change % Change Gross profit $ 78,274 $ 56,750 $ 21,524 38 % Gross margin 88 % 87 % 1 % Product gross profit 57,207 41,870 15,337 37 % Product gross margin 85 % 84 % 1 % Subscription gross profit 21,067 14,880 6,187 42 % Subscription gross margin 97 % 97 % 0 % Gross profit increased $21.5 million, or 38%, for fiscal year 2025, compared to fiscal year 2024.