Biggest changeYear ended December 31, 2024 2023 2022 (in thousands) Dollars % of revenue Dollars % of revenue Dollars % of revenue Revenue: Product $ 54,200 66.1 % $ 40,036 60.8 % $ 50,263 68.5 % Software and other services 27,856 33.9 25,864 39.2 23,127 31.5 Total revenue 82,056 100.0 65,900 100.0 73,390 100.0 Cost of revenue: Product 24,380 29.7 40,655 61.7 26,804 36.5 Software and other services 8,845 10.8 8,389 12.7 7,126 9.7 Total cost of revenue 33,225 40.5 49,044 74.4 33,930 46.2 Gross profit 48,831 59.5 16,856 25.6 39,460 53.8 Operating expenses: Research and development 37,800 46.1 55,616 84.4 88,044 120.0 Sales and marketing 41,567 50.7 39,073 59.3 59,494 81.1 General and administrative 39,810 48.5 49,613 75.3 77,596 105.7 Other 4,065 5.0 18,164 27.6 7,346 10.0 Total operating expenses 123,242 150.3 162,466 246.6 232,480 316.8 Loss from operations (74,411) (90.8) (145,610) (221.0) (193,020) (263.0) Interest income 5,020 6.1 7,450 11.3 3,384 4.6 Interest expense (1,261) (1.5) — — (2) — Change in fair value of warrant liabilities (1,859) (2.3) 4,544 6.9 20,859 28.4 Other income (expense), net (13) — (2) — 98 0.1 Loss before provision for income taxes (72,524) (88.5) (133,618) (202.8) (168,681) (229.9) Provision (benefit) for income taxes (32) — 82 0.1 42 0.1 Net loss and comprehensive loss $ (72,492) (88.5) $ (133,700) (202.9) $ (168,723) (230.0) Comparison of the Years Ended December 31, 2024 and 2023 Revenue Year ended December 31, (in thousands) 2024 2023 Change % Change Product $ 54,200 $ 40,036 $ 14,164 35.4 % Software and other services 27,856 25,864 1,992 7.7 $ 82,056 $ 65,900 $ 16,156 24.5 % 46 Table of Contents Product revenue increased by $14.2 million, or 35.4%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
Biggest changeThe accounting policies are described in Note 2 “Summary of Significant Accounting Policies” in our consolidated financial statements included in this Annual Report on Form 10-K. 47 Table of Contents Year ended December 31, 2025 2024 2023 (in thousands) Dollars % of total revenue Dollars % of total revenue Dollars % of total revenue Revenue: Product $ 63,443 65.0 % $ 54,200 66.1 % $ 40,036 60.8 % Software and other services 34,167 35.0 27,856 33.9 25,864 39.2 Total revenue 97,610 100.0 82,056 100.0 65,900 100.0 Cost of revenue: Product 44,065 45.1 24,380 29.7 40,655 61.7 Software and other services 7,811 8.0 8,845 10.8 8,389 12.7 Total cost of revenue 51,876 53.1 33,225 40.5 49,044 74.4 Gross profit 45,734 46.9 48,831 59.5 16,856 25.6 Operating expenses: Research and development 36,262 37.1 37,800 46.1 55,616 84.4 Sales and marketing 45,876 47.0 41,567 50.7 39,073 59.3 General and administrative 39,235 40.2 39,810 48.5 49,613 75.3 Other 10,776 11.0 4,065 5.0 18,164 27.6 Total operating expenses 132,149 135.4 123,242 150.2 162,466 246.5 Loss from operations (86,415) (88.5) (74,411) (90.7) (145,610) (221.0) Interest income 5,911 6.1 5,020 6.1 7,450 11.3 Interest expense (1,490) (1.5) (1,261) (1.5) — — Change in fair value of warrant liabilities 2,272 2.3 (1,859) (2.3) 4,544 6.9 Other income (expense), net 2,768 2.8 (13) 0.0 (2) 0.0 Loss before provision for income taxes (76,954) (78.8) (72,524) (88.4) (133,618) (202.8) Provision (benefit) for income taxes 110 0.1 (32) 0.0 82 0.1 Net loss and comprehensive loss $ (77,064) (79.0) % $ (72,492) (88.3) % $ (133,700) (202.9) % Comparison of the Years Ended December 31, 2025 and 2024 Revenue Year ended December 31, (in thousands) 2025 2024 Change % Change Product $ 63,443 $ 54,200 $ 9,243 17.1 % Software and other services 34,167 27,856 6,311 22.7 $ 97,610 $ 82,056 $ 15,554 19.0 % Product revenue increased by $9.2 million, or 17.1%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
We estimate variable consideration based on the individual contract characteristics or may apply a portfolio approach depending on the circumstances. 52 Table of Contents Stock-based compensation Our stock-based compensation program includes stock option grants and restricted stock unit ("RSU") grants to our employees, directors, and consultants as well as an employee stock purchase plan ("ESPP").
We estimate variable consideration based on the individual contract characteristics or may apply a portfolio approach depending on the circumstances. 54 Table of Contents Stock-based compensation Our stock-based compensation program includes stock option grants and restricted stock unit ("RSU") grants to our employees, directors, and consultants as well as an employee stock purchase plan ("ESPP").
These other expenses primarily consist of employee severance and benefits costs related to our reductions in force and business transformation initiative, litigation costs, and legal settlements. Results of Operations We operate as a single reportable segment to reflect the way our chief operating decision maker reviews and assesses the performance of the business.
These other expenses primarily consist of employee severance and benefits costs related to reductions in force, business transformation initiatives, litigation costs, and legal settlements. Results of Operations We operate as a single reportable segment to reflect the way our chief operating decision maker reviews and assesses the performance of the business.
We capitalize manufacturing overhead expenditures as part of inventory costs. Capitalized costs primarily include management’s best estimate and allocation of the direct labor, materials costs, and other overhead costs incurred related to 53 Table of Contents inventory acquired or produced but not sold during the respective period.
We capitalize manufacturing overhead expenditures as part of inventory costs. Capitalized costs primarily include management’s best estimate and allocation of the direct labor, materials costs, and other overhead costs incurred related to 55 Table of Contents inventory acquired or produced but not sold during the respective period.
Cost of revenue Year ended December 31, (in thousands) 2024 2023 Change % Change Product $ 24,380 $ 40,655 $ (16,275) (40.0) % Software and other services 8,845 8,389 456 5.4 $ 33,225 $ 49,044 $ (15,819) (32.3) % Percentage of revenue 40.5 % 74.4 % Cost of product revenue decreased by $16.3 million, or 40.0%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
Cost of revenue Year ended December 31, (in thousands) 2024 2023 Change % Change Product $ 24,380 $ 40,655 $ (16,275) (40.0) % Software and other services 8,845 8,389 456 5.4 $ 33,225 $ 49,044 $ (15,819) (32.3) % Percentage of revenue 40.5 % 74.4 % 50 Table of Contents Cost of product revenue decreased by $16.3 million, or 40.0%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
Cash flows provided by investing activities Net cash provided by investing activities decreased by $73.1 million for the year ended December 31, 2024 compared to the year ended December 31, 2023. The decrease was primarily due to the sale of our marketable securities in 2023.
Net cash provided by (used in) investing activities Net cash provided by (used in) investing activities decreased by $73.1 million for the year ended December 31, 2024 compared to the year ended December 31, 2023. The decrease was primarily due to the sale of our marketable securities in 2023.
We plan to continue to invest additional resources to expand and further develop our SaaS and other service offerings which will be reflected in cost of revenue as amortization expense. Research and development Research and development expenses primarily consist of personnel costs and benefits, professional services, facilities-related expenses and depreciation, fabrication services, and software costs.
We plan to continue to invest additional resources 46 Table of Contents to expand and further develop our SaaS and other service offerings which will be reflected in cost of revenue as amortization expense. Research and development Research and development expenses primarily consist of personnel costs and benefits, professional services, facilities-related expenses and depreciation, fabrication services, and software costs.
Sales and marketing Year ended December 31, (in thousands) 2024 2023 Change % Change Sales and marketing $ 41,567 $ 39,073 $ 2,494 6.4 % Percentage of revenue 50.7 % 59.3 % 47 Table of Contents Sales and marketing expenses increased by $2.5 million, or 6.4%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
Sales and marketing Year ended December 31, (in thousands) 2024 2023 Change % Change Sales and marketing $ 41,567 $ 39,073 $ 2,494 6.4 % Percentage of revenue 50.7 % 59.3 % Sales and marketing expenses increased by $2.5 million, or 6.4%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
The decrease was primarily due to $2.0 million of payments made in connection with financing activities in 2024 that did not occur in 2023, partially offset by $0.5 million of proceeds from our employee stock purchase plan that began in 2024.
The decrease was primarily due to $2.0 million of payments made in 53 Table of Contents connection with financing activities in 2024 that did not occur in 2023, partially offset by $0.5 million of proceeds from our employee stock purchase plan that began in 2024.
General and administrative General and administrative expenses primarily consist of personnel costs and benefits, insurance, patent fees, software costs, facilities-related expenses, and outside services. Outside services consist of professional services, legal fees and other professional fees. 45 Table of Contents Other Operating expenses classified as other are expenses which we do not consider representative of our ongoing operations.
General and administrative General and administrative expenses primarily consist of personnel costs and benefits, insurance, patent fees, software costs, facilities-related expenses, and outside services. Outside services consist of professional services, legal fees and other professional fees. Other Operating expenses classified as other are expenses which we do not consider representative of our ongoing operations.
This increase was primarily driven by higher enterprise software revenue and increased licensing revenue from our Butterfly Garden and Powered by Butterfly partnerships, partially offset by lower renewals of individual subscriptions. Enterprise as a percentage of software revenue increased by approximately 5 percentage points year-over-year.
This increase was primarily driven by higher enterprise software revenue and increased licensing revenue from our Butterfly Embedded™ partnerships, partially offset by lower renewals of individual subscriptions. Enterprise as a percentage of software revenue increased by approximately 5 percentage points year-over-year.
Cost of subscription revenue increased by $0.5 million, or 5.4%, for the year ended December 31, 2024 compared to the year ended December 31, 2023. This increase was primarily driven by higher software amortization expenses but was partially offset by lower cloud hosting costs.
Cost of software and other services revenue increased by $0.5 million, or 5.4%, for the year ended December 31, 2024 compared to the year ended December 31, 2023. This increase was primarily driven by higher software amortization expenses but was partially offset by lower cloud hosting costs.
Comparison of the period for the years ended December 31, 2023 and 2022 Cash flows used in operating activities Net cash used in operating activities represents the cash receipts and disbursements related to our activities other than investing and financing activities.
Comparison of the period for the years ended December 31, 2024 and 2023 Net cash used in operating activities Net cash used in operating activities represents the cash receipts and disbursements related to our activities other than investing and financing activities.
Cash flows provided by financing activities Net cash provided by financing activities decreased by $1.7 million for the year ended December 31, 2024 compared to the year ended December 31, 2023.
Net cash provided by (used in) financing activities Net cash provided by (used in) financing activities decreased by $1.7 million for the year ended December 31, 2024 compared to the year ended December 31, 2023.
Butterfly developed ultrasound devices that can perform whole-body imaging in a single handheld probe because it is powered by our proprietary semiconductor technology instead of piezoelectric crystals.
Butterfly developed ultrasound devices that can perform whole-body imaging in a single handheld probe because they are powered by our proprietary semiconductor technology instead of piezoelectric crystals.
Cost of revenue Cost of product revenue consists of product costs including manufacturing costs, personnel costs and benefits, inbound freight, packaging, warranty replacement costs, payment processing fees, and inventory obsolescence and write-offs.
Cost of revenue Cost of product revenue consists of product costs including manufacturing costs, personnel costs and benefits, inbound freight, packaging, warranty replacement costs, royalty fees for licensed intellectual property, payment processing fees, and inventory obsolescence and write-offs.
The process of preparing financial statements in conformity with U.S. GAAP requires us to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenue and expense during the period.
GAAP requires us to make estimates and assumptions that affect the reported amounts of certain assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements as well as the reported amounts of revenue and expense during the period.
Generally, we have identified the following performance obligations can be promised in our contracts with customers: • Hardware devices and accessories; • Software subscriptions, including renewal subscriptions, which represent an obligation to provide the customer with ongoing access to our cloud-hosted software applications on a continuous basis throughout the subscription period; • Implementation and integration services; • Extended warranties; and • SDKs, either perpetual or term-based.
Generally, we have identified the following performance obligations can be promised in our contracts with customers: • Hardware devices and accessories; • Software subscriptions, including renewal subscriptions, which represent an obligation to provide the customer with ongoing access to our cloud-hosted software applications on a continuous basis throughout the subscription period; • Out-licensing arrangements of our intellectual property for novel technologies in non-competitive markets and related research and development services; • Implementation and integration services; • Extended warranties; and • SDKs, either perpetual or term-based.
We expect cash provided by historical financing activities will continue to be our primary source of funds to support operating needs and capital expenditures for the foreseeable future. Net cash used in operating activities decreased by $70.3 million, or 41.6%, for the year ended December 31, 2023 compared to the year ended December 31, 2022.
We expect cash provided by historical financing activities will continue to be our primary source of funds to support operating needs and capital expenditures for the foreseeable future. Net cash used in operating activities decreased by $29.0 million, or 69.5%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
Cash Flows The following table summarizes our sources and uses of cash for the years ended December 31, 2024, 2023 and 2022: Year ended December 31, (in thousands) 2024 2023 2022 Net cash used in operating activities $ (41,707) $ (98,820) $ (169,115) Net cash provided by (used in) investing activities (2,658) 70,414 (93,779) Net cash provided by (used in) financing activities (1,495) 228 2,881 Net decrease in cash, cash equivalents, and restricted cash $ (45,860) $ (28,178) $ (260,013) 50 Table of Contents Comparison of the period for the years ended December 31, 2024 and 2023 Cash flows used in operating activities Net cash used in operating activities represents the cash receipts and disbursements related to our activities other than investing and financing activities.
Cash Flows The following table summarizes our sources and uses of cash for the years ended December 31, 2025, 2024 and 2023: Year ended December 31, (in thousands) 2025 2024 2023 Net cash used in operating activities $ (12,700) $ (41,707) $ (98,820) Net cash provided by (used in) investing activities (3,348) (2,658) 70,414 Net cash provided by (used in) financing activities 77,762 (1,495) 228 Net increase (decrease) in cash, cash equivalents, and restricted cash $ 61,714 $ (45,860) $ (28,178) 52 Table of Contents Comparison of the period for the years ended December 31, 2025 and 2024 Net cash used in operating activities Net cash used in operating activities represents the cash receipts and disbursements related to our activities other than investing and financing activities.
To date, we have invested in building out our commercial footprint, with the ultimate goal of growing adoption at large-scale healthcare systems and driving awareness of the usability of ultrasound.
The quarterly revenue mix may be impacted by the timing of device sales. To date, we have invested in building out our commercial footprint, with the ultimate goal of growing adoption at large-scale healthcare systems and driving awareness of the usability of ultrasound.
We view software and other services mix as a key indicator of the profitability of our business, and thus we believe that this measure is useful to investors. Software and other services mix decreased by 5.3 percentage points, to 33.9% for the year ended December 31, 2024 compared to the year ended December 31, 2023.
We view software and other services mix as a key indicator of the profitability of our business, and thus we believe that this measure is useful to investors. 45 Table of Contents Software and other services mix increased by 1.1 percentage points, to 35.0%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
Liquidity and Capital Resources Since our inception, our primary sources of liquidity are cash flows from operations and proceeds from stock issuances and the Business Combination. Our primary uses of liquidity are operating expenses, working capital requirements, and capital expenditures. During the year ended December 31, 2024, the Company utilized $45.9 million of cash and cash equivalents.
Liquidity and Capital Resources Since our inception, our primary sources of liquidity are cash flows from operations and proceeds from stock issuances and the Business Combination. Our primary uses of liquidity are operating expenses, working capital requirements, and capital expenditures.
SaaS subscriptions, Support, and term-based SDKs are generally related to stand-ready obligations and are recognized ratably over time. Over time, as adoption of our devices increases through further market penetration and as practitioners in the Butterfly network continue to use our devices, we expect our annual revenue mix to shift more toward software and other services.
Over time, as adoption of our devices increases through further market penetration, as practitioners in the Butterfly network continue to use our devices, and as our Butterfly Embedded™ collaborations continue to grow and develop, we expect our annual revenue mix to shift more toward software and other services.
We have restricted cash of $4.0 million as of December 31, 2024 to secure a letter of credit for one of our leases, which is expected to be maintained as a security deposit for the duration of the lease. Our material cash requirements include contractual obligations with third parties for office leases, technology licensing agreements, and inventory supply agreements.
As of December 31, 2025, we have restricted cash of $4.0 million to secure a letter of credit for one of our leases, which is expected to be maintained as a security deposit for the duration of the lease.
Our software and related service offerings include SaaS subscriptions, product support and maintenance (“Support”), and software development kits ("SDKs") which may be perpetual or term-based. SaaS subscriptions include licenses for teams and individuals as well as enterprise-level subscriptions. For sales of products and perpetual SDKs, revenue is recognized at a point in time upon transfer of control to the customer.
Our software and related service offerings include SaaS subscriptions, product support and maintenance (“Support”), software development kits ("SDKs") which may be perpetual or term-based, and partnership support services. SaaS subscriptions include licenses for teams and individuals as well as enterprise-level subscriptions.
Other Year ended December 31, (in thousands) 2024 2023 Change % Change Other $ 4,065 $ 18,164 $ (14,099) (77.6) % Percentage of revenue 5.0 % 27.6 % Other decreased by $14.1 million for the year ended December 31, 2024 compared to the year ended December 31, 2023.
Other Year ended December 31, (in thousands) 2025 2024 Change % Change Other $ 10,776 $ 4,065 $ 6,711 165.1 % Percentage of revenue 11.0 % 5.0 % Other increased by $6.7 million for the year ended December 31, 2025 compared to the year ended December 31, 2024.
Our fixed purchase obligations for inventory supply agreements, net of vendor advances, were $3.8 million as of December 31, 2024, all of which is payable within the next 12 months. As of December 31, 2024, we had no obligations, assets or liabilities, which would be considered off-balance sheet arrangements.
Our fixed outsourced services payment obligations were $4.1 million as of December 31, 2025, with $1.4 million payable within the next 12 months. As of December 31, 2025, we had no obligations, assets or liabilities, which would be considered off-balance sheet arrangements.
This decrease was primarily driven by reductions of $6.2 million in personnel costs resulting from our reductions in force carried out in 2023, $2.7 million in professional service fees for legal and other administrative services, and $1.5 million in insurance costs.
This decrease was primarily driven by reductions of $6.2 million in personnel costs resulting from our reductions in force carried out in 2023, $2.7 million in professional service fees for legal and other administrative services, and $1.5 million in insurance costs. 51 Table of Contents Other Year ended December 31, (in thousands) 2024 2023 Change % Change Other $ 4,065 $ 18,164 $ (14,099) (77.6) % Percentage of revenue 5.0 % 27.6 % Other decreased by $14.1 million for the year ended December 31, 2024 compared to the year ended December 31, 2023.
As of December 31, 2024, our cash and cash equivalents balance was $88.8 million. On January 31, 2025, we raised an additional $86.9 million, before underwriting costs and expenses, through the issuance and sale in a public offering of 27.6 million shares of our Class A common stock.
On January 31, 2025, we raised $81.0 million, net of underwriting costs and related expenses, through the issuance and sale in a public offering of 27.6 million shares of our Class A common stock. Excluding this public offering, during the year ended December 31, 2025, the Company utilized $19.3 million of cash and cash equivalents.
Research and development Year ended December 31, (in thousands) 2023 2022 Change % Change Research and development $ 55,616 $ 88,044 $ (32,428) (36.8) % Percentage of revenue 84.4 % 120.0 % Research and development expenses decreased by $32.4 million, or 36.8%, for the year ended December 31, 2023 compared to the year ended December 31, 2022.
Research and development Year ended December 31, (in thousands) 2025 2024 Change % Change Research and development $ 36,262 $ 37,800 $ (1,538) (4.1) % Percentage of revenue 37.1 % 46.1 % Research and development expenses decreased by $1.5 million, or 4.1%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
Key Performance Measures We review the key performance measures discussed below to evaluate the business and measure performance, identify trends, formulate plans, and make strategic decisions. Our key performance measures may fluctuate over time as the adoption of our devices increases, which may shift the revenue mix more toward software and other services.
Our key performance measures may fluctuate over time as the adoption of our devices increases, which may shift the revenue mix more toward software and other services. Units fulfilled We define units fulfilled as the number of devices whereby control is transferred to a customer.
Our implementation and integration services are a performance obligation satisfied over time, and we use costs incurred as inputs into the measure of progress to recognize revenue for these services. We account for the warranty as an assurance-type warranty. When product revenue is recognized, an estimate of future warranty costs is recognized as cost of product revenue and accrued expenses.
Out-licensing arrangements and the related research and development services are performance obligations that are satisfied over time using an input method as progress is made towards key project milestones. Our implementation and integration services are a performance obligation satisfied over time, and we use costs incurred as inputs into the measure of progress to recognize revenue for these services.
Our future spending on capital resources may vary from those currently planned and will depend on various factors, including our rate of revenue growth and the timing and extent of spending on strategic business initiatives.
As of December 31, 2025, our cash and cash equivalents balance was $150.5 million. Our future spending will depend on various factors, including our rate of revenue growth and the timing and extent of spending on strategic business initiatives.
Factors that affect the estimate of future warranty costs include historical and current product failure rates, service delivery costs incurred in correcting product failures, and warranty policies and business practices. Our contracts with customers include variable consideration in the form of refunds and credits for product returns and price concessions.
We account for the warranty as an assurance-type warranty. When product revenue is recognized, an estimate of future warranty costs is recognized as cost of product revenue and accrued expenses. Factors that affect the estimate of future warranty costs include historical and current product failure rates, service delivery costs incurred in correcting product failures, and warranty policies and business practices.
Comparison of the Years Ended December 31, 2023 and 2022 Revenue Year ended December 31, (in thousands) 2023 2022 Change % Change Product $ 40,036 $ 50,263 $ (10,227) (20.3) % Software and other services 25,864 23,127 2,737 11.8 $ 65,900 $ 73,390 $ (7,490) (10.2) % Product revenue decreased by $10.2 million, or 20.3%, for the year ended December 31, 2023 compared to the year ended December 31, 2022.
Comparison of the Years Ended December 31, 2024 and 2023 Revenue Year ended December 31, (in thousands) 2024 2023 Change % Change Product $ 54,200 $ 40,036 $ 14,164 35.4 % Software and other services 27,856 25,864 1,992 7.7 $ 82,056 $ 65,900 $ 16,156 24.5 % Product revenue increased by $14.2 million, or 35.4%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
The decrease was primarily due to the non-recurrence of net proceeds from exercise of stock options and warrants of $2.7 million, partially offset by $0.1 million from other financing activities. Critical Accounting Policies and Estimates Our consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”).
Critical Accounting Policies and Estimates Our consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”). The process of preparing financial statements in conformity with U.S.
Sales and marketing Year ended December 31, (in thousands) 2023 2022 Change % Change Sales and marketing $ 39,073 $ 59,494 $ (20,421) (34.3) % Percentage of revenue 59.3 % 81.1 % Sales and marketing expenses decreased by $20.4 million, or 34.3%, for the year ended December 31, 2023 compared to the year ended December 31, 2022.
Sales and marketing Year ended December 31, (in thousands) 2025 2024 Change % Change Sales and marketing $ 45,876 $ 41,567 $ 4,309 10.4 % Percentage of revenue 47.0 % 50.7 % Sales and marketing expenses increased by $4.3 million, or 10.4%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
Our fixed office lease payment obligations were $28.0 million as of December 31, 2024, with $3.7 million payable within the next 12 months. Our fixed technology license payment obligations were $14.0 million as of December 31, 2024, with $3.5 million payable within the next 12 months.
Our material cash requirements include contractual obligations with third parties for office leases, technology licensing agreements, inventory supply agreements, and outsourced services. Our fixed office lease payment obligations were $24.3 million as of December 31, 2025, with $3.7 million payable within the next 12 months.
This increase was primarily driven by $6.7 million of higher employee severance and benefits costs resulting from our reductions in force in 2023 and $4.1 million of higher legal costs due to litigation and other legal matters. These costs are not representative of our ongoing operations.
This increase was driven by $7.1 million of higher legal costs due to litigation, including the $3.0 million accrued loss contingency recognized in 2025, partially offset by $0.4 million of lower employment-related costs. These costs are not representative of our ongoing operations.
The decrease in net working capital cash usage was driven by a $17.7 million reduction in cash used for changes in our inventory and the related vendor advances and accrued purchase commitments, partially offset by a $4.5 million increase in cash used by accrued expenses and other liabilities, $2.9 million increase in cash used by operating lease assets and liabilities, and a $0.8 million increase in cash used by prepaid expenses and other assets.
The improvement in net working capital cash usage was primarily driven by a $12.4 million improvement in cash provided by changes in deferred revenue, a $5.6 million improvement in cash provided by changes in our inventory and the related vendor advances, a $3.3 million improvement in cash provided by changes in accounts payable and accrued expenses, and a $1.8 million improvement in cash used for changes in accounts receivable.
We believe that this measure is useful to investors because it presents our core growth and performance of our business period over period. 43 Table of Contents Units fulfilled increased by 3,131, or 19.0%, for the year ended December 31, 2024 compared to the year ended December 31, 2023.
We do not adjust this measure for returns as our volume of returns has historically been low. We view units fulfilled as a key indicator of the growth of our business. We believe that this measure is useful to investors because it presents our core growth and performance of our business period over period.
The decrease was driven by a $9.3 million decrease in net working capital cash usage and a $61.0 million decrease in net loss adjusted for certain noncash items, primarily driven by the loss on excess inventory, the change in fair value of warrant liabilities, and net income.
The decrease was comprised of improvements of $8.9 million in net loss adjusted for certain non-cash items and $20.1 million in net working capital cash usage.
Although our software and other services revenue increased in the current year, our software and other services mix decreased due to the even larger increase in product revenue realized in the current year. 44 Table of Contents Description of Certain Components of Financial Data Revenue Revenue consists of revenue from the sale of products, such as medical devices and accessories, and the sale of software and related services, classified as software and other services revenue on our consolidated statements of operations and comprehensive loss.
This increase was primarily driven by increases in software subscription revenue from our Butterfly Embedded™ partnerships. Description of Certain Components of Financial Data Revenue Revenue consists of revenue from the sale of products, such as medical devices, accessories, and semiconductor chips, and the sale of software and other services.
General and administrative Year ended December 31, (in thousands) 2023 2022 Change % Change General and administrative $ 49,613 $ 77,596 $ (27,983) (36.1) % Percentage of revenue 75.3 % 105.7 % General and administrative expenses decreased by $28.0 million, or 36.1%, for the year ended December 31, 2023 compared to the year ended December 31, 2022.
Additionally, as our units fulfilled increased, we had $0.3 million of higher shipping and logistics costs. 49 Table of Contents General and administrative Year ended December 31, (in thousands) 2025 2024 Change % Change General and administrative $ 39,235 $ 39,810 $ (575) (1.4) % Percentage of revenue 40.2 % 48.5 % General and administrative expenses decreased by $0.6 million, or 1.4%, for the year ended December 31, 2025 compared to the year ended December 31, 2024.
Cash flows used in investing activities Net cash used in investing activities decreased by $164.2 million, or 175.1%, for the year ended December 31, 2023 compared to the year ended December 31, 2022. The decrease was primarily due to the purchase of marketable securities in 2022, and the subsequent sale of those securities in 2023.
These improvements were partially offset by a $2.9 million increase in cash used for changes in prepaid expenses and other assets. Net cash used in investing activities Net cash used in investing activities increased by $0.7 million for the year ended December 31, 2025 compared to the year ended December 31, 2024, primarily due to increased purchases of fixed assets.
Cost of subscription revenue increased by $1.3 million, or 17.7%, for the year ended December 31, 2023 compared to the year ended December 31, 2022. This increase was primarily driven by higher amortization expenses related to newly deployed internally developed software that supports our SaaS offerings.
Cost of software and other services revenue decreased by $1.0 million, or 11.7%, for the year ended December 31, 2025 compared to the year ended December 31, 2024, primarily driven by a $2.1 million decrease in amortization expense for software development investments that we made in prior years, partially offset by a $1.0 million increase in costs related to specialized development activities for our Butterfly Embedded™ partners.
This decrease was primarily driven by reductions of $22.0 million in 49 Table of Contents personnel costs resulting from our reductions in force over the past year and $4.9 million in professional service fees for legal and other administrative services.
This increase was primarily driven by $3.3 million of higher personnel and other employment-related costs and $0.2 million of higher professional services costs, both resulting from investments in our sales force and client experience function in order to support continued revenue growth.