Biggest changeWe maintain a full valuation allowance against our U.S. deferred tax assets because we have concluded that it is more likely than not that our deferred tax assets will not be realized. 42 Table of Contents Results of Operations The following table sets forth our consolidated statements of operations and comprehensive loss data for the periods indicated: For the Years Ended December 31, 2024 2023 (in thousands) Revenue $ 127,628 $ 102,019 Cost of revenue (1) 58,285 52,162 Gross profit 69,343 49,857 Operating expenses: Research and development (1) 42,098 39,527 Sales and marketing (1) 44,440 41,270 General and administrative (1) 29,094 26,965 Total operating expenses 115,632 107,762 Loss from operations (46,289) (57,905) Investment income 1,422 1,984 Interest expense, net (3,658) (3,792) Loss before provision for income taxes (48,525) (59,713) Income tax provision 6 — Net loss and comprehensive loss $ (48,531) $ (59,713) __________________ (1) Includes stock-based compensation expense as follows: For the Years Ended December 31, 2024 2023 (in thousands) Cost of revenue $ 1,907 $ 1,986 Research and development 11,277 9,218 Sales and marketing 9,505 8,801 General and administrative 5,939 5,172 Total stock-based compensation expense $ 28,628 $ 25,177 (1) Stock-based compensation expense includes restructuring charges of $2.5 million and $0.1 million , incurred during the years ended December 31, 2024 and 2023.
Biggest changeResults of Operations The following table sets forth our consolidated statements of operations and comprehensive loss data for the periods indicated: For the Years Ended December 31, 2025 2024 2023 (in thousands) Revenue $ 145,835 $ 127,628 $ 102,019 Cost of revenue 57,042 58,285 52,162 Gross profit 88,793 69,343 49,857 Operating expenses: Research and development 46,109 42,098 39,527 Sales and marketing 37,397 44,440 41,270 General and administrative 28,910 29,094 26,965 Total operating expenses 112,416 115,632 107,762 Loss from operations (23,623) (46,289) (57,905) Investment income 1,961 1,422 1,984 Interest expense (3,866) (3,658) (3,792) Loss before provision for income taxes (25,528) (48,525) (59,713) Income tax provision 84 6 — Net loss and comprehensive loss $ (25,612) $ (48,531) $ (59,713) The following table sets forth our consolidated statements of operations and comprehensive loss data expressed as a percentage of revenue for the periods indicated: (1) For the Years Ended December 31, 2025 2024 2023 Revenue 100 % 100 % 100 % Cost of revenue 39 46 51 Gross profit 61 54 49 Operating expenses: Research and development 32 33 39 Sales and marketing 26 35 40 General and administrative 20 23 26 Total operating expenses 77 91 106 Loss from operations (16) (36) (57) Investment income 1 1 2 Interest expense (3) (3) (4) Loss before provision for income taxes (18) (38) (59) Income tax provision — — — Net loss (18) % (38) % (59) % ________________ (1) Totals may not sum due to rounding. 46 Table of Contents The following table includes stock-based compensation, depreciation and amortization, and restructuring charges as they are included in the results of operations: For the Years Ended December 31, 2025 2024 2023 (in thousands) Stock-based compensation (1) Cost of revenue $ 1,557 $ 1,616 $ 1,986 Research and development 12,094 10,392 9,218 Sales and marketing 6,119 8,280 8,721 General and administrative 6,655 5,816 5,127 Total stock-based compensation $ 26,425 $ 26,104 $ 25,052 Depreciation and amortization (2) Cost of revenue $ 25,136 $ 27,761 $ 24,331 Research and development 170 262 261 Sales and marketing 117 190 189 General and administrative 70 115 131 Total depreciation and amortization $ 25,493 $ 28,328 $ 24,912 Restructuring charges Cost of revenue $ 115 $ 460 $ — Research and development 285 1,278 2,311 Sales and marketing 687 1,867 1,025 General and administrative 1,385 1,256 280 Total restructuring charges $ 2,472 $ 4,861 $ 3,616 ________________ (1) $2.5 million of stock-based compensation incurred during the year ended December 31, 2024 is classified as restructuring charges in the table above, including $0.3 million related to cost of revenue , $0.9 million related to research and development costs, $1.2 million related to sales and marketing costs, and $0.1 million related to general and administrative costs. $0.1 million of stock-based compensation incurred during the year ended December 31, 2023, which were related to sales and marketing and general and administrative costs, is classified as restructuring charges in the table above.
We define adjusted gross margin as gross profit, excluding stock-based compensation expense, depreciation and amortization and restructuring charges within cost of revenue, as a percentage of adjusted gross profit to revenue. We exclude stock-based compensation, which is a non-cash item, and restructuring charges because we do not consider it indicative of our core operating performance.
We define adjusted gross profit as gross profit, excluding stock-based compensation expense, depreciation and amortization and restructuring charges within cost of revenue. We define adjusted gross margin as a percentage of adjusted gross profit to revenue. We exclude stock-based compensation, which is a non-cash item, and restructuring charges because we do not consider it indicative of our core operating performance.
See Notes 2 and 3 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for more information on revenue from B2 Cloud Storage and Computer Backup arrangements. ARR does not have a standardized meaning and is therefore unlikely to be comparable to similarly titled measures presented by other companies.
See Notes 2 and 3 to our consolidated financial statements included in this Annual Report on Form 10-K for more information on revenue from B2 Cloud Storage and Computer Backup arrangements. ARR does not have a standardized meaning and is therefore unlikely to be comparable to similarly titled measures presented by other companies.
Customers may purchase our B2 Cloud Storage on a capacity or committed contract basis for greater predictability. For prospective customers interested in Computer Backup, we offer a free 15-day trial and automatically start to back up all their files securely to our Backblaze Storage Cloud. Prospective customers can then choose to sign up on a per computer basis.
Customers may purchase our B2 Cloud Storage on a capacity or committed contract basis for greater predictability. For prospective customers interested in Computer Backup, we offer a free 14 -day trial and automatically start to back up all their files securely to our Backblaze Storage Cloud. Prospective customers can then choose to sign up on a per computer basis.
Our future capital requirements will depend on many factors, including our total revenue growth rate, the timing and the amount of cash received from customers, the expansion of sales and marketing activities, the timing and extent of spending to support development efforts, the potential expansion of our data centers, the price at which we are able to purchase or lease infrastructure equipment, the impact of inflation on interest rates, the introduction of platform enhancements, and the continuing market adoption of our platform.
Our future capital requirements will depend on many factors, including our total revenue growth rate, the timing and the amount of cash received from customers, the expansion of sales and marketing activities, the timing and extent of spending to support development efforts, the potential expansion of our data center spaces, the price at which we are able to purchase or lease infrastructure equipment, the impact of inflation on interest rates, the introduction of platform enhancements, and the continuing market adoption of our platform.
We have not experienced a material impact on customer retention as a result of this price increase through December 31, 2024. Cost of Revenue and Gross Margin Cost of revenue consists of our expenses in providing our platform and cloud services to our customers.
We have not experienced a material impact on customer retention as a result of this price increase through December 31, 2025. Cost of Revenue and Gross Margin Cost of revenue consists of our expenses in providing our platform and cloud services to our customers.
We believe that adjusted EBITDA and Adjusted EBITDA Margin, when taken together with our GAAP financial results, provides meaningful supplemental information regarding our operating performance by excluding certain items that may not be indicative of our business, results of operations, or outlook.
We believe that Adjusted EBITDA and Adjusted EBITDA Margin, when taken together with our GAAP financial results, provide meaningful supplemental information regarding our operating performance by excluding certain items that may not be indicative of our business, results of operations, or outlook.
Although B2 Cloud Storage is generally paid for by customers in arrears, we recognize revenue in the month these storage services are delivered, and consider this revenue recurring as customers are charged as long as their data is stored with us.
Although B2 Cloud Storage is generally consumption-based and paid for by customers in arrears, we recognize revenue in the month these storage services are delivered, and consider this revenue recurring as customers are charged as long as their data is stored with us.
International Expansion Whil e our sales and marketing efforts have primarily focused on the United States, our existing customer base spans more th an 175 countries, with 26% of our total revenue originating outside of the United States for the year ended December 31, 2024. We believe international expansion may represent a meaningful opportunity.
International Expansion Whil e our sales and marketing efforts have primarily focused on the United States, our existing customer base spans more th an 175 countries, with 28% of our total revenue originating outside of the United States for the year ended December 31, 2025. We believe international expansion may represent a meaningful opportunity.
Customers use us to support their AI workflows, help ensure the cyber-resilience of their organizations, streamline their media workflows, and enable a variety of other data-focused application and IT needs. Through our blog and culture of transparency, we have built a community of millions of readers and brand advocates.
Customers use us to support their AI workflows, help ensure the cyber-resilience of their organizations, streamline their media workflows, and enable a variety of other data-focused application and information technology (“IT”) needs. Through our blog and culture of transparency, we have built a community of millions of readers and brand advocates.
Our annual average revenue per user for B2 Cloud Storage and Computer Backup is calculated in the same manner based on the revenue and number of customers from our B2 Cloud Storage and Computer Backup solutions, respectively.
Our ARR per user for B2 Cloud Storage and Computer Backup is calculated in the same manner based on the revenue and number of customers from our B2 Cloud Storage and Computer Backup solutions, respectively.
As we seek to move up-market, we expect our direct sales activities to increasingly contribute to the acquisition of these customers. Our customers use our Storage Cloud platform across more than 175 countries to store and protect their data with an aggregate of approximately 4 billion gigabytes of data storage under management.
As we move up-market, we expect our direct sales activities to increasingly contribute to the acquisition of customers like these. Our customers use our Backblaze Storage Cloud platform across more than 175 countries to store and protect their data with an aggregate of approximately 5 billion gigabytes of data storage under management.
The following table shows a summary of our cash flows for the periods presente d: For the Years Ended December 31, 2024 2023 (in thousands) Net cash provided by (used in) operating activities $ 12,505 $ (7,350) Net cash (used in) provided by investing activities $ (6,131) $ 21,657 Net cash provided by (used in) financing activities $ 22,772 $ (8,842) Operating Activities Our largest source of operating cash is payments received from our customers.
Cash Flows The following table shows a summary of our cash flows for the periods presente d: For the Years Ended December 31, 2025 2024 2023 (in thousands) Net cash provided by (used in) operating activities $ 23,544 $ 12,505 $ (7,350) Net cash (used in) provided by investing activities $ (25,340) $ (6,131) $ 21,657 Net cash (used in) provided by financing activities $ (14,798) $ 22,772 $ (8,842) Operating Activities Our largest source of operating cash is payments received from our customers.
These expenses include operating in colocation facilities, network and bandwidth costs, and depreciation of our equipment and finance leased equipment in colocation facilities. Personnel-related costs associated with customer support and maintaining service availability, including salaries, benefits, bonuses, and stock-based compensation are also included.
These expenses include operating our data center spaces, network and bandwidth costs, and depreciation of our equipment and finance leased equipment in data center spaces. Personnel-related costs associated with customer support and maintaining service availability, including salaries, benefits, bonuses, and stock-based compensation are also included.
Key Components of Results of Operations Revenue We generate revenue primarily from our B2 Cloud Storage and Computer Backup cloud services offered on our platform. Our platform is offered to our customers primarily through either a consumption or committed contract basis or a subscription-based arrangement through B2 Cloud Storage and Computer Backup, respectively.
Key Components of Results of Operations Revenue We generate revenue primarily from our B2 Cloud Storage and Computer Backup cloud services offered on our platform. Our platform is offered to customers primarily through two pricing models: a consumption- or committed-contract basis for B2 Cloud Storage, and a subscription-based arrangement for Computer Backup.
As a result, our consolidated financial statements may not be comparable to companies that comply with new or revised accounting pronouncements as of public company effective dates.
Accordingly, our consolidated financial statements may not be comparable to those of public companies that comply with new or revised accounting pronouncements as of the public company effective dates.
Our Annual ARPU increased for B2 Cloud Storage and Computer Backup by 12% and 14%, respectively, for the year ended December 31, 2024 compared to the year ended December 31, 2023, primarily due to increased storage and our focus on adding larger customers.
Our Annual ARPU increased for B2 Cloud Storage and Computer Backup by 16% and 3% , respectively, for the year ended December 31, 2025 compared to the year ended December 31, 2024, primarily due to increased storage and our focus on adding larger customers.
We calculate our gross customer retention rate for a quarter by dividing (i) the number of accounts that generated revenue in the last month of the current quarter that also generated recurring revenue during the last month of the corresponding quarter in the prior year, by (ii) the number of accounts that generated recurring revenue during the last month of the corresponding quarter in the prior year.
We calculate the quarterly gross customer retention rates by dividing (i) the number of accounts that generated revenue in the last month of the current quarter that also generated recurring revenue during the last month of the corresponding quarter in the prior year, by (ii) the number of accounts that generated recurring revenue during the last month of the corresponding quarter in the prior year.
Our annual recurring revenue for B2 Cloud Storage and Computer Backup is calculated in the same manner as our overall annual recurring revenue based on the revenue from our Computer Backup and B2 Cloud Storage solutions, respectively.
Our ARR for each of B2 Cloud Storage and Computer Backup is calculated in the same manner as our overall ARR based on the revenue from our B2 Cloud Storage and Computer Backup solutions, respectively.
Interest Expense, net Interest expense, net consists primarily of interest related to our finance lease agreements and interest on the previously outstanding balance of our debt facility. Incom e Tax Provision Provision for income taxes consists primarily of income taxes in certain foreign and state jurisdictions in which we conduct business.
Interest Expense Interest expense consists primarily of interest related to our finance lease agreements, interest on the outstanding balance of our debt facility, and the amortization of debt issuance costs. 45 Table of Contents Incom e Tax Provision Provision for income taxes consists primarily of income taxes in certain foreign and state jurisdictions in which we conduct business.
December 31, 2024 2023 B2 Cloud Storage Net revenue retention rate (NRR) 123 % 122 % Gross customer retention rate 89 % 90 % Annual recurring revenue (in millions) $ 70.2 $ 57.6 Number of customers 107,616 97,842 Annual average revenue per user $ 645 $ 577 Computer Backup Net revenue retention rate (NRR) 109 % 100 % Gross customer retention rate 90 % 91 % Annual recurring revenue (in millions) $ 66.5 $ 60.0 Number of customers 417,845 431,745 Annual average revenue per user $ 159 $ 140 Total Company Net revenue retention rate (NRR) 116 % 109 % Gross customer retention rate 90 % 91 % Annual recurring revenue (in millions) $ 136.7 $ 117.6 Number of customers (1) 507,647 511,942 Annual average revenue per user $ 268 $ 228 (1) The number of customers for each of B2 Cloud Storage and Computer Backup solutions include customers that use both our B2 Cloud Storage and Computer Backup solutions.
December 31, 2025 2024 2023 B2 Cloud Storage Net revenue retention rate 111 % 123 % 122 % Gross customer retention rate 89 % 89 % 90 % Annual recurring revenue (in millions) $ 88.9 $ 70.2 $ 57.6 Number of customers 119,154 107,616 97,842 Annual average revenue per user $ 750 $ 645 $ 577 Computer Backup Net revenue retention rate 98 % 109 % 100 % Gross customer retention rate 91 % 90 % 91 % Annual recurring revenue (in millions) $ 65.5 $ 66.5 $ 60.0 Number of customers 402,589 417,845 431,745 Annual average revenue per user $ 163 $ 159 $ 140 Total Company Net revenue retention rate 105 % 116 % 109 % Gross customer retention rate 91 % 90 % 91 % Annual recurring revenue (in millions) $ 154.4 $ 136.7 $ 117.6 Number of customers (1) 503,866 507,647 511,942 Annual average revenue per user $ 307 $ 268 $ 228 ________________ (1) The number of customers for each of B2 Cloud Storage and Computer Backup solutions include customers that use both our B2 Cloud Storage and Computer Backup solutions.
One such example would be a business using B2 Cloud Storage for media asset management storage, which decides to also use the service as an origin store for content distribution; another would be a business that adopts B2 Cloud Storage for backup and archive purposes, which decides to also enable Object Lock for ransomware protection.
For example, a media company using B2 Cloud Storage for asset storage may later use it as an origin store for content distribution. Another example would be a business that adopts B2 Cloud Storage for backup and archive purposes, which decides to also enable Object Lock for ransomware protection.
We believe our high gross customer retention rates demonstrate that we provide a vital service to our customers, as the vast majority of our customers tend to continue to use our platform from one period to the next.
We believe our high gross customer retention rates demonstrate that we provide a vital service to our customers, as the vast majority of our customers tend to continue to use our platform from one period to the next. To calculate our gross customer retention rate, we take the trailing four-quarter average of our quarterly gross customer retention rates.
Non-GAAP Financial Measures To supplement our consolidated financial statements, which are prepared and presented in accordance with generally accepted accounting principles in the United States, or GAAP, we provide investors with non-GAAP financial measures including adjusted gross margin, adjusted EBITDA, and adjusted EBITDA margin, each as defined below.
Non-GAAP Financial Measures To supplement our consolidated financial statements, which are prepared and presented in accordance with generally accepted accounting principles in the United States (“GAAP”), we provide investors with non-GAAP financial measures including adjusted gross profit (and margin), adjusted earnings before interest, taxes, depreciation and amortization (“EBITDA”), adjusted EBITDA margin, each as defined below.
Our Backblaze Storage Cloud provides a platform that is the foundation for our B2 Cloud Storage Infrastructure-as-a-Service (IaaS) offering and our Backblaze Computer Backup Software-as-a-Service (SaaS) offering. B2 Cloud Storage enables customers to store data, developers to build applications, and partners to expand their use cases.
Our Backblaze Storage Cloud provides a platform that is the foundation for our B2 Cloud Storage Infrastructure-as-a-Service (“IaaS”) offering, our B2 Overdrive high-performance IaaS offering, our Powered by Backblaze white label IaaS offering, and our Computer Backup Software-as-a-Service (“SaaS”) offering. B2 Cloud Storage enables customers to store data, developers to build applications, and partners to expand their use cases.
Contractual Obligations and Commitments Our commitments are associated with contracts that are enforceable and legally binding and that specify all significant terms, including fixed or minimum services to be used, fixed, minimum or variable price provisions, and the approximate timing of the actions under the contracts. Operating lease commitments relate primarily to our rental of office space and co-location facilities.
Contractual Obligations and Commitments Our commitments are associated with contracts that are enforceable and legally binding and that specify all significant terms, including fixed or minimum services to be used, fixed, minimum or variable price provisions, and the approximate timing of the actions under the contracts.
If we are unable to raise additional capital or generate cash flows necessary to expand our operations and invest in continued innovation, we may not be able to compete successfully, which would harm our business, results of operations, and financial condition.
If we are unable to raise additional capital or generate cash flows necessary to expand our operations and invest in continued innovation, we may not be able to compete successfully, which would harm our business, results of operations, and financial condition. We maintain cash deposits in the United States, in Federal Deposit Insurance Corporation insured banks.
Our direct sales activities, channel and technology partners, and referrals from our community of brand advocates, com bined with our highly efficient and self-serve customer acquisition model have allowed us to attract over 500,000 customers as of December 31, 2024, and our direct sales activities have historically supported us in acquiring larger customers.
Our direct sales activities, channel and technology partners, and referrals from our community of brand advocates, combined with our highly efficient and self-serve customer acquisition model have allowed us to attract over 500,000 customers as of December 31, 2025, and our direct sales activities have historically supported us in acquiring larger customers, including leading neocloud platforms via our Powered by Backblaze program.
Our subscription arrangements generally range in duration from one month to three years, for which we bill our customers up front for the entire period. Consumption-based revenue is variable and is related to fees charged for our customers’ use of our platform and is recognized as revenue in the period in which the consumption occurs.
Our subscription arrangements generally range in duration from one month to five years, for which we bill our customers up front for the entire period. Consumption-based arrangements are generally recognized based on fees charged for customer usage of our platform, with fees recorded as revenue in the period in which the consumption occurs.
General and administrative expenses also include costs related to legal and other professional services fees, sales and other taxes; depreciation and amortization; and an allocation of our general overhead expenses.
General and Administrative General and administrative expenses consist primarily of personnel costs for our accounting, finance, legal, security, human resources, and administrative support personnel and executives. General and administrative expenses also include costs related to legal and other professional services fees, sales and other taxes; depreciation and amortization; and an allocation of our general overhead expenses.
The amount of data stored in this cloud service can scale up and down as needed primarily on a pay-as-you-go basis or can be paid for on a capacity or committed contract basis for greater predictability. Backblaze Computer Backup automatically backs up data from laptops and desktops for businesses and individuals.
The amount of data stored in this cloud service can scale up and down as needed primarily on a pay-as-you-go basis or can be paid for on a capacity or committed contract basis for greater predictability. B2 Overdrive is built on the foundation of B2 Cloud Storage.
Our research and development expenses may fluctuate as a percentage of total revenue from period to period due to the timing and extent of these expenses. Sales and Marketing Sales and marketing expenses consist primarily of our investment in personnel costs.
Our research and development expenses may fluctuate as a percentage of total revenue from period to period due to the timing and extent of these expenses. Sales and Marketing Sales and marketing expenses include the cost of personnel focused on developing and executing selling and marketing activities.
Sales and marketing expenses also include investments related to advertising, marketing, our brand awareness activities, commissions paid to marketing partners, sales commissions paid to our employees that are recognized as expenses over the period of benefit, and an allocation of our general overhead expenses.
Sales and marketing expenses also include program investments related to advertising, demand generation, brand awareness activities, sales commissions paid to our employees, and an allocation of our general overhead expenses.
Our gross customer retention rate reflects only customer losses and does not reflect the expansion or contraction of revenue we earn from our existing customers.
Our gross customer retention rate reflects only customer losses and does not reflect the expansion or contraction of revenue we earn from our existing customers. We have maintained gross customer retention rates of approximately 90% across our revenue products as of both December 31, 2025 and December 31, 2024.
Further, during the periods presented, customers who store data with us generally increase the amount of their data stored over time, as evidenced by our B2 Cloud Storage net revenue retention r ate of 123% as of December 31, 2024. Fees from B2 Cloud Storage (consumption-based arrangements) are recognized as services are delivered.
Further, during the periods presented, customers who store data with us generally increase the amount of their data stored over time, as evidenced by our B2 Cloud Storage NRR r ate of 111% as of December 31, 2025.
We exclude depreciation expense of our property and equipment and amortization expense of capitalized internal-use software because these may not reflect current or future cash spending levels to support our business.
We exclude depreciation expense of our property and equipment and amortization expense of capitalized internal-use software because these may not reflect current or future cash spending levels to support our business. We believe adjusted gross profit (and margin) provides consistency and comparability with our past financial performance and facilitates period-to-period comparisons of operations.
Given the renewable nature of our business, we view ARR as an important indicator of our financial performance and operating results, and we believe it is a useful metric for internal planning and analysis.
Given the renewable nature of our business, we view ARR as an important indicator of our financial performance and operating results, and we believe it is a useful metric for internal planning and analysis. ARR is calculated by multiplying the monthly revenue from all B2 Cloud Storage and Computer Backup arrangements for the last month of a period by 12.
Financing Activities Cash provided by financing activities was primarily due to $37.4 million of proceeds from the Follow-On Offering. Cash provided of $7.5 million and $2.8 million were related to proceeds from the exercise of employee stock options and proceeds from our ESPP, respectively. Proceeds of $0.6 million related to the credit facility prior to its termination.
Cash provided by financing activities for the year ended December 30, 2024 was $22.8 million, resulting primarily from the following activity: • $37.4 million of net proceeds from the Follow-On Offering; • $7.5 million in proceeds from the exercise of employee stock options; • $2.8 million in proceeds from our ESPP; • $0.6 million in proceeds from our RCA debt facility prior to its termination.
We expect our investment in research and development to increase in absolute dollars for the foreseeable future as we continue to focus our research and development investments on adding new features to our platform, improving our cloud service offerings, and increasing the functionality of our existing features.
We expect our investments in research and development to increase in absolute dollars for the foreseeable future as we continue to add new features to our platform, integrate advanced technologies such as AI into our development lifecycle, further enhancing our cloud service offerings, and increase the functionality of our existing features.
Adjusted Gross Margin We believe adjusted gross margin, when taken together with our GAAP financial results, provides a meaningful assessment of our performance, and is useful to us for evaluating our ongoing operations and for internal planning and forecasting purposes.
A reconciliation of each of our non-GAAP financial measures to the most directly comparable financial measure calculated in accordance with GAAP is set forth below. 50 Table of Contents Adjusted Gross Profit and Adjusted Gross Margin We believe adjusted gross profit (and margin), when taken together with our GAAP financial results, provides a meaningful assessment of our performance, and is useful to us for evaluating our ongoing operations and for internal planning and forecasting purposes.
Cost of revenue also includes credit card processing fees, amortization of capitalized internal-use software development costs, and allocated overhead costs. We intend to continue to invest additional resources in our infrastructure to support the growth of our business.
Cost of revenue also includes credit card processing fees, amortization of capitalized internal-use software development costs, and allocated overhead costs. We plan to continue investing in our infrastructure to support the growth of our business. These investments include the purchase and expansion of infrastructure equipment (and related depreciation) as well as software development activities and associated amortization.
We plan to continue investing in sales initiatives, supplementing our self-serve model with a direct sales approach, expanding our partner ecosystem, driving our go-to-market strategies, building our lead generation and brand awareness, and sponsoring marketing events.
Sales and marketing expenses also reflect ongoing investments in sales initiatives, including supplementing our self-serve model with a direct sales approach, expanding our partner ecosystem, building our lead generation and brand awareness, and sponsoring marketing events.
As of December 31, 2024 and 2023 , our principal sources of liquidity were cash, restricted cash, and short-term investments of $54.9 million and $33.4 million, respectively.
As of December 31, 2025 and 2024 , our principal sources of liquidity were cash, cash equivalents, and marketable securities of $51.4 million and $54.9 million, respectively.
For example, in January 2025 we opened a data center region in Toronto, Canada and partnered with a leader in hybrid cloud solutions in Canada, to extend our market reach in Canada, as noted above. 38 Table of Contents Key Business Metrics We monitor the key business metrics set forth below to help us evaluate our business and growth trends, establish budgets, measure the effectiveness of our sales and marketing investments, and assess operational efficiencies.
This agreement resulted in the launch of a new data center region in Canada in January 2025. Key Business Metrics We monitor the key business metrics set forth below to help us evaluate our business and growth trends, establish budgets, measure the effectiveness of our sales and marketing investments, and assess operational efficiencies.
Cash provided by operations increased during the year ended December 31, 2024, as compared to the same period in 2023 primarily due to our growing customer base, increased storage from new and existing customers and the price increase that began to take effect in October 2023, partially offset by increased expenditures related to managing and operating our co-location facilities, and increased spending in support of our expanded research and development and sales and marketing spending to support business growth.
Cash provided by operations increased during the year ended December 31, 2024, as compared to the same period in 2023 primarily due to our growing customer base, increased storage from new and existing customers and the price increase that began to take effect in October 2023, partially offset by increased expenditures related to managing and operating our co-location facilities, and increased spending in support of our expanded research and development and sales and marketing spending to support business growth. 55 Table of Contents Investing Activities Cash used in investing activities during the year ended December 31, 2025 was $25.3 million, resulting primarily from the following activity: • Purchases of marketable securities of $39.5 million; • Cash payments of $7.6 million related to the development of internal-use software for adding new features and enhanced functionality to our platform; • Cash payments of $4.7 million related to capital expenditures in support of infrastructure deployments to support our growing business; and • Proceeds of $26.3 million from the maturity of our marketable securities.
For the year ended December 31, 2023, cash used in operating activities was $7.4 million, which resulted from a net loss of $59.7 million, adjusted for non-cash charges of $52.8 million and a net cash outflow of $0.4 million from changes in operating assets and liabilities.
For the year ended December 31, 2025, cash provided by operating activities was $23.5 million, which resulted from a net loss of $25.6 million, adjusted for non-cash charges of $58.5 million and net cash outflow of $9.3 million from changes in operating assets and liabilities.
The calculation of the key metrics discussed below may differ from other similarly titled metrics used by other companies, securities analysts, or investors.
The calculation of the key metrics discussed are calculated under the same method for B2 Cloud Storage, Computer Backup, and total Company. The below metrics may differ from other similarly titled metrics used by other companies, securities analysts or investors.
Additionally, customers receive email and chat support for free, but can also opt for enhanced support tiers for an additional cost, which provide dedicated customer support contacts and 24/7 response. • Use Case Expansion: B2 Cloud Storage customers may adopt the service for one business need, but can expand their use cases as their business evolves.
Additionally, customers receive email and chat support for free, but can also opt for enhanced support tiers for an additional cost, which provide dedicated customer support contacts and 24/7 response. • Use Case Expansion: Customers often begin using our products for a single need and expand over time.
We believe that by offering an easy to use, cost-effective, performant cloud storage solution, and thereby substantially reducing the cost, complexity and frustration of storing, using, and protecting data, we can empower customers to focus on their core business operations.
We believe that by offering a cloud storage solution optimized for price-to-performance at scale, engineered for efficiency, and priced predictably, we substantially reduce the cost, complexity and frustration of storing, using, and protecting data, and we empower customers to focus on their core business operations.
This cloud backup service offers easily understood primarily flat-rate pricing to continuously back up a virtually unlimited amount of data. We believe that focusing on storage use cases and promoting an open cloud ecosystem allows us to integrate well with a broad range of partners.
Computer Backup automatically backs up data from laptops and desktops for businesses and individuals. This cloud backup service offers easily understood primarily flat-rate pricing to continuously back up a virtually unlimited amount of data. 38 Table of Contents We focus on specialized storage and an open cloud ecosystem that integrates with a broad range of partners.
See Note 16 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional information regarding restructuring charges . (2) As of December 31, 2024, we included foreign exchange loss in the reconciliation of net loss to Adjusted EBITDA.
See Note 16 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for additional information regarding our restructuring plans and associated charges.
The following table presents a reconciliation of gross margin, the most directly comparable financial measure stated in accordance with GAAP, to adjusted gross margin, for each of the periods presented: For the Years Ended December 31, 2024 2023 (in thousands, except percentages) Gross profit $ 69,343 $ 49,857 Adjustments: Stock-based compensation 1,616 1,986 Depreciation and amortization 27,761 24,330 Restructuring charges 460 — Adjusted gross profit $ 99,180 $ 76,173 Gross margin 54 % 49 % Adjusted gross margin 78 % 75 % Adjusted EBITDA and Adjusted EBITDA Margin We define Adjusted EBITDA as net loss adjusted to exclude depreciation and amortization, stock-based compensation, interest expense, net, investment income, income tax provision, realized and unrealized gains and losses on foreign currency transactions, impairment of long-lived assets, restructuring charges, legal settlement costs, and other non-recurring charges.
The following table presents a reconciliation of gross profit, the most directly comparable financial measure stated in accordance with GAAP, to adjusted gross profit (and margin), for each of the periods presented: For the Years Ended December 31, 2025 2024 2023 (in thousands, except percentages) Gross profit $ 88,793 $ 69,343 $ 49,857 Adjustments: Stock-based compensation (1) 1,557 1,616 1,986 Depreciation and amortization (2) 25,136 27,761 24,330 Restructuring charges 115 460 — Adjusted gross profit $ 115,601 $ 99,180 $ 76,173 Gross margin 61 % 54 % 49 % Adjusted gross margin 79 % 78 % 75 % ________________ (1) $0.3 million of stock-based compensation expense for the year ended December 31, 2024 is classified as restructuring charges in the table above, as these charges were incurred as part of our 2024 Restructuring Plan.
Our Gross Customer Retention Rate decreased by 1% for both B2 Cloud Storage and Computer Backup for the year ended December 31, 2024 compared to the year ended December 31, 2023. Annual Recurring Revenue We define annual recurring revenue (“ARR”) as the annualized value of all B2 Cloud Storage and Computer Backup arrangements as of the end of a period.
Annual Recurring Revenue We define annual recurring revenue (“ARR”) as the annualized value of all B2 Cloud Storage and Computer Backup arrangements as of the end of a period.
Because of these limitations, when evaluating our performance, you should consider Adjusted EBITDA alongside other financial performance measures, including our net loss and other GAAP results.
Because of these limitations, when evaluating our performance, you should consider Adjusted EBITDA alongside other financial performance measures, including our net loss and other GAAP results. The following table presents a reconciliation of net loss, the most directly comparable financial measure stated in accordance with GAAP, to Adjusted EBITDA for each of the periods presented.
As a result, we expect our general and administrative costs to increase over time, as our business continues to grow. Investment Income Investment income consists primarily of interest earned on our cash balances and investments.
While we expect general and administrative expenses to increase in absolute dollars as our business scales, we anticipate that these costs will decline as a percentage of revenue over time. Investment Income Investment income consists primarily of interest earned on our cash, cash equivalents and investments in marketable securities.
The following table presents a reconciliation of net loss, the most directly comparable financial measure stated in accordance with GAAP, to Adjusted EBITDA for each of the periods presented: For the Years Ended December 31, 2024 2023 (in thousands, except percentages) Net loss $ (48,531) $ (59,713) Adjustments: Depreciation and amortization 28,328 24,912 Stock-based compensation (1) 26,104 25,052 Interest expense and investment income 2,236 1,808 Income tax provision 6 — Foreign exchange loss (2) 32 123 Non-recurring professional services — 411 Restructuring charges (3) 4,861 3,616 Adjusted EBITDA $ 13,036 $ (3,791) Adjusted EBITDA Margin 10 % (4) % 47 Table of Contents (1) During the three months ended December 31, 2024 , $2.5 million of stock-based compensation expense is classified as restructuring charges in the table above, as it was incurred as part of our restructuring program.
For the Years Ended December 31, 2025 2024 2023 (in thousands, except percentages) Net loss and comprehensive loss $ (25,612) $ (48,531) $ (59,713) Adjustments: Depreciation and amortization (1) 25,493 28,328 24,912 Stock-based compensation (2) 26,425 26,104 25,052 Interest expense and investment income, net 1,905 2,236 1,808 Income tax provision 84 6 — Foreign exchange loss 451 32 123 Litigation settlement costs 288 — 411 Impairment loss on long-lived assets (3) 258 — 232 Restructuring charges 2,472 4,861 3,616 Adjusted EBITDA $ 31,764 $ 13,036 $ (3,559) Net loss and comprehensive loss margin (18) % (38) % (59) % Adjusted EBITDA Margin 22 % 10 % (3) % ________________ (1) $0.1 million of depreciation and amortization expense for the year ended December 31, 2025 is classified as restructuring charges in the table above, as these charges were incurred as part of our 2025 Restructuring and Transformation Plan.
Additionally, cash used of $12.5 million was related to the development of internal-use software for adding new features and enhanced functionality to our platform, and $1.7 million was used on capital expenditures in support of infrastructure deployments to support our growing business.
Cash used in investing activities during the year ended December 31, 2024 was $6.1 million, resulting primarily from the following activity: • Purchases of marketable securities of $38.1 million; • Cash payments of $12.5 million related to the development of internal-use software for adding new features and enhanced functionality to our platform; • Cash payments of $1.7 million related to capital expenditures in support of infrastructure deployments to support our growing business; • Proceeds of $45.7 million from the maturity of our marketable securities; and • Proceeds of $0.5 million from the disposition of certain hard drives.
We may invest in our operations internationally to reach new customers by expanding in targeted key geographies where we believe there are opportunities for significant return on investment.
We may invest in our operations 41 Table of Contents internationally to reach new customers by expanding into targeted key geographies where we believe there are opportunities for significant return on investment. In January 2025, for example, we entered into an agreement with a leading hybrid cloud solutions provider in Canada to extend our market reach in this region.
B2 Cloud Storage offers Snapshots that allow customers to create moment-in-time versions of their data, and we also allow customers to keep their data in multiple geographic regions, both of which provide more customer value.
For example, our Computer Backup cloud service offers Enterprise Control, which provides larger customers with greater administrative management for an additional cost. B2 Cloud Storage offers Snapshots that allow customers to create moment-in-time versions of their data, and also allows customers to retain data in multiple geographic regions, both of which provide additional flexibility and value.
We believe that our existing cash, cash equivalents, and short-term investments, together with cash provide d by operations, will be sufficient to support our working capital and capital expenditure requirements for at least the next 12 months. Our material cash requirements include contractual and other obligations under our finance and operating lease agreements, and purchase commitments as discussed below.
We believe that our existing cash, cash equivalents, and marketable securities, together with cash provided by operations and our revolving credit facility, will be sufficient to support our working capital and capital expenditure requirements for at least the next 12 months.
No stock-based compensation related to restructuring charges was recognized during the three months ended December 31, 2023. During the years ended December 31, 2024 and 2023, $2.5 million and $0.1 million, respectively, of stock-based compensation is classified as restructuring charges in the table above.
(2) A nominal amount, $2.5 million, and $0.1 million, of stock-based compensation expense for the years ended December 31, 2025 , 2024 and 2023, are classified as restructuring charges in the table above, as these charges were incurred under our restructuring plans.
The net cash outflow from changes in operating assets and liabilities was primarily the result of a $2.5 million decrease in operating lease liabilities, a $1.4 million decrease in 49 Table of Contents accrued expenses and other current liabilities, which decreased primarily due to our accrued compensation and due to timing of payment of our expenses, a $0.4 million increase in other assets, a $0.4 million increase in prepaid and other current assets and a $0.3 million decrease in accounts payable, offset in part by a $4.5 million increase of deferred revenue, which increased due to our growing customer base and upfront collections from our customers.
The net cash outflow from changes in operating assets and liabilities was primarily due to a $4.5 million decrease in operating lease liabilities reflecting the timing of lease payments, a $2.7 million increase in other assets primarily related to employee sales commissions, a $1.7 million increase in accounts receivable driven by higher revenue from enterprise customers and the timing of billings and related collections, and a $1.5 million increase in prepaid expenses and other current assets primarily due to higher unbilled revenue.
Critical Accounting Estimates Our consolidated financial statements and the related notes thereto included elsewhere in this Annual Report on Form 10-K are prepared in accordance with GAAP. The preparation of consolidated financial statements also requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, costs and expenses, and related disclosures.
For more information, see Note 10 and Note 11 to our consolidated financial statements located elsewhere in this Annual Report on Form 10-K. Critical Accounting Estimates Our consolidated financial statements and related notes included elsewhere in this Annual Report on Form 10-K are prepared in accordance with GAAP.
The weighted average discount rate for finance leases was 11.9% as of December 31, 2024. For further information on our future minimum commitments on our operating leases, s ee “Item 8. Financial Statement and Supplementary Data — Note 11. Commitments and Contingencies” to our consolidated financial statements.
S ee Note 10 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for our future minimum commitments related to our finance leases. The weighted average discount rate for finance leases was 12.6% as of December 31, 2025.
Research and Development Research and development expenses consist primarily of our investment in personnel costs, costs related to technical operations, and an allocation of our general overhead expenses. We capitalize the portion of our software development costs that meets the criteria for capitalization.
We capitalize the portion of our software development costs that meets the criteria for capitalization.
Some of these investments, including costs of infrastructure equipment (including related depreciation) and expansion, and software development costs and related amortization are incurred in advance of generating revenue, and either the failure to generate anticipated revenue or fluctuations in the timing of revenue could affect our gross margin from period to period.
Because these costs are often incurred ahead of revenue generation, delays in realizing anticipated revenue or fluctuations in the timing of revenue could adversely affect our gross margin from period to period.
Cash provided was partially offset by cash used of $19.5 million for principal payments on our finance lease agreements and lease financing obligations related to hard drives and other infrastructure equipment used in our co-location facilities, and $0.9 million related to repayment of principal on financed insurance premiums. We used $4.7 million to repay, in full, our line of credit.
See Note 12 to our consolidated financial statements located elsewhere in this Annual Report on Form 10-K for additional information ; • Principal payments on our finance lease agreements and lease financing obligations of $19.5 million related to hard drives and other infrastructure equipment used in our data center spaces; • $4.7 million related to the repayment, in full, of the RCA debt facility; • $0.9 million related to repayment of principal on financed insurance premiums; and • $0.4 million related to payments of offering costs in connection with our Follow-On Offering.
Cash used in financing activities was primarily due to principal payments on our finance lease agreements and lease financing obligations of $19.5 million related to hard drives and other infrastructure equipment used in our co-location facilities, $4.5 million repayment of principal on our line of credit, $1.5 million related to repayment of principal on financed insurance premiums, offset in part by $4.7 million in proceeds from the exercise of employee stock options, $4.5 million from our lease financing transactions, $4.3 million in proceeds from our credit facility, $2.3 million in proceeds from our ESPP, and $0.9 million of proceeds from insurance premium financing.
Financing Activities Cash used in financing activities for the year ended December 31, 2025 was $14.8 million, resulting primarily from the following activity: • Principal payments on our finance lease agreements and lease financing obligations of $18.2 million related to hard drives and other infrastructure equipment used in our data center spaces; • $2.0 million related to repurchases of our Class A common stock; • $1.9 million related to payments on taxes for net share settlements of vested equity awards, resulting in a retirement of related equity awards; • $0.6 million related to payments of debt issuance costs; • $5.3 million in proceeds from the exercise of employee stock options; and • $2.6 million in proceeds from our ESPP.
In the fourth quarter of 2023, we refined our customer definition to include end-user customers that purchase through a reseller. Annual Average Revenue Per User We define annual average revenue per user (“Annual ARPU”) as the annualized value for the average revenue per customer.
This population makes up substantially all of our user base. Annual Average Revenue Per User We define annual average revenue per user (“Annual ARPU”) as the annualized value for the average revenue per customer.
Income Tax Provision For the Years Ended December 31, 2024 2023 Change % Change (in thousands, except percentages) Income tax provision $ 6 $ — $ 6 — % Our provision for income taxes was relatively flat for the year ended December 31, 2024, compared to the same period in 2023.
Income Tax Provision Our provision for income taxes was immaterial for the years ended December 31, 2025 and 2024.
We also generally enter into leases for our facilities for data centers and office space under non-cancelable operating leases w ith various expiration dates. See “Item 8. Financial Statement and Supplementary Data — Note 10. Finance Leases and Lease Financing Obligations” for our future minimum commitments related to our finance leases.
Operating Leases We lease data center spaces and office space under non-cancelable operating leases with various expiration dates. See Note 10 to our consolidated financial statements included elsewhere in this Annual Report on Form 10-K for further information on our future minimum commitments on our operating leases.
In the future, we may enter into arrangements to acquire or invest in complementary businesses, products, and technologies. We plan to continue to enter into finance lease agreements for purchase of infrastructure equipment and may also be required or choose to seek additional equity or debt financing.
In the future, we may enter into arrangements to acquire or invest in complementary businesses, products, and technologies. To support our up-market transformation, we expect to increase our capital expenditures, continue leveraging finance lease agreements for infrastructure investments and, when strategic opportunities arise, we may supplement our revolving credit facility with additional equity or debt funding to accelerate enterprise-focused growth.
Non-cash charges primarily consisted of $24.9 million for depreciation and amortization expense and $25.2 million for stock-based compensation expense.
Non-cash charges primarily consisted of $26.4 million for stock-based compensation expense, $25.6 million for depreciation and amortization expense, noncash lease expense on operating leases of $4.9 million, and a $1.0 million impairment loss on right-of-use assets primarily related to our restructuring activities.
By adding more partners and deepening our relationships with them, we expand our use cases and drive new customer acquisition. Expansion Within Existing Customers Our future success will depend in part on our ability to increase usage and adoption of our solutions with existing customers.
This disciplined approach is designed not only to acquire new customers efficiently but also to cultivate long-term relationships that turn customers into brand advocates, partners, and sources of referrals. Expansion Within Existing Customers Our future success will depend in part on our ability to increase usage and adoption of our solutions with existing customers.
Operating Expenses The most significant components of our operating expenses are personnel costs, which consist of salaries, benefits, bonuses, and stock-based compensation.
This update resulted in a reduction in depreciation expense of approximately $5.2 million for the year ended December 31, 2025 and is anticipated to result in further reduction of approximately $2.8 million for the year ending December 31, 2026. 44 Table of Contents Operating Expenses The most significant components of our operating expenses are personnel costs, which consist of salaries, benefits, bonuses, and stock-based compensation.
Costs incurred during the year ended December 31, 2023 relate to severance and benefits for the employees impacted by the restructuring plan initiated in 2023. Liquidity and Capital Resources Since inception, we have financed operations primarily through payments received from our customers and, in later periods from the net proceeds from our initial public offering.
(3) $1.0 million and $0.9 million of impairment loss on right-of-use assets for the years ended December 31, 2025 and 2024, respectively, are classified as restructuring charges in the table above, as these charges were incurred as part of our restructuring plans. 52 Table of Contents Liquidity and Capital Resources General Since inception, we have financed operations primarily through payments received from our customers and, in later periods from the net proceeds from our public offerings.
Our ARR incre ased by $6.5 million, or 11%, for Comp uter Backup for the year ended December 31, 2024 compared to the year ended December 31, 2023, primarily due to the price increase. 40 Table of Contents Number of Customers We define a customer at the end of any period as a distinct account, as identified by a unique account identifier, that has paid for our cloud services, which makes up substantially all of our user base.
ARR for Computer Backup experienced a slight decline of $1.0 million compared to the prior year, but continues to serve as a stable source of recurring revenue, supported by multi-year subscription commitments and increased demand from business environments. 43 Table of Contents Number of Customers We define a customer at the end of any period as a distinct account, as identified by a unique account identifier, that has paid for our cloud services, including end-user customers that purchase through a reseller.
We generate revenue primarily from our two cloud services: • Backblaze B2 Cloud Storage, which enables customers to store data for a wide range of use cases, and for developers to embed our platform into their applications.
Our two primary cloud services are B2 Cloud Storage and Computer Backup, which together enable customers to store, use, and protect their data across a broad variety of use cases. • B2 Cloud Storage enables customers to store and manage data for use cases ranging from backup and archive to application storage, ransomware protection, and AI/ML workloads.
Our ARR increased by $12.6 million, or 22% for B2 Cloud Storage for the year ended December 31, 2024 compared to the year ended December 31, 2023, primarily due to the price increase and increased storage from new and existing customers.
Changes to recurring revenue may result from the expansion of our offerings to our existing customers, as well as new customer acquisition and the timing of customer renewals. Our ARR increased by $18.7 million for B2 Cloud Storage as of December 31, 2025 compared to December 31, 2024, representing 27% growth.
Under the RCA, as amended in December 2023, the maximum borrowing available was reduced from $30 million to $20 million and advances on the line of credit will bear monthly interest at a variable rate equal to, at our discretion, (a) the average SOFR plus 2.75%, or (b) the base rate.
Borrowings under the facility bear interest at a variable rate, at our discretion, equal to either (a) the average Secured Overnight Financing Rate (“SOFR”) plus 3.25% or (b) a base rate, as defined in the Credit Agreement, plus 2.25%.