As filed with the Securities and Exchange Commission on November 2, 2021.

Registration No. 333-260333

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

AMENDMENT NO. 1 TO

FORM S-1

REGISTRATION STATEMENT

Under

The Securities Act of 1933

BACKBLAZE, INC.

(Exact name of Registrant as specified in its charter)

500 Ben Franklin Ct

San Mateo, CA 94401

(650) 352-3738

(Address, including zip code, and telephone number, including area code, of Registrant’s principal executive offices)

Gleb Budman

Chief Executive Officer

Backblaze, Inc.

500 Ben Franklin Ct

San Mateo, CA 94401

(650) 352-3738

(Name, address, including zip code, and telephone number, including area code, of agent for service)

Copies to:

Approximate date of commencement of proposed sale to the public: As soon as practicable after the effective date of this registration statement.

If any of the securities being registered on this form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box.  ☐

If this form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

If this form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering.  ☐

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

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act.  ☐

CALCULATION OF REGISTRATION FEE

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until the Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.

The information in this preliminary prospectus is not complete and may be changed. These securities may not be sold until the registration statement filed with the Securities and Exchange Commission is effective. This preliminary prospectus is not an offer to sell nor does it seek an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

Subject to Completion

Preliminary Prospectus dated November 2, 2021

PROSPECTUS

6,250,000 Shares

Class A Common Stock

This is Backblaze, Inc.’s initial public offering. We are selling 6,250,000 shares of our Class A common stock.

We expect the public offering price to be between $15.00 and $17.00 per share. Currently, no public market exists for our Class A common stock. After pricing of the offering, we expect that the shares will trade on the NASDAQ Global Market under the symbol “BLZE.”

We have two classes of common stock, Class A common stock and Class B common stock. The rights of the holders of Class A common stock and Class B common stock are identical, except for voting, transfer, and conversion rights. Each share of Class A common stock is entitled to one vote. Each share of Class B common stock is entitled to ten votes and is convertible at any time into one share of Class A common stock. See the section titled “Description of Capital Stock” herein for additional information on our capital stock. The holders of our outstanding shares of Class B common stock will hold approximately 97% of the voting power of our outstanding capital stock immediately following this offering, and our founders, directors, executive officers and greater than 5% stockholders and their respective affiliates as a group will hold, or have the ability to control, approximately 80% of the voting power of our outstanding capital stock immediately following this offering.

We are an “emerging growth company” as defined under the federal securities laws and, as such, have elected to comply with certain reduced reporting requirements for this prospectus and may elect to do so in future filings. See “Prospectus Summary—Implications of Being an Emerging Growth Company.” Investing in the common stock involves risks that are described in the ‘‘Risk Factors’’ section beginning on page 20 of this prospectus.

The underwriters may also exercise their option to purchase up to an additional 937,500 shares from us, at the public offering price, less the underwriting discount, for 30 days after the date of this prospectus.

At our request, the underwriters have reserved up to 312,500 shares of our Class A common stock, or up to 5% of the shares offered by this prospectus, for sale at the initial public offering price through a directed share program to certain of our business partners and qualifying customers who are located in the United States. See the section titled “Underwriting.”

Neither the Securities and Exchange Commission nor any other regulatory body has approved or disapproved of these securities, or passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.

The shares will be ready for delivery on or about                     , 2021.

Lake Street

The date of this prospectus is                     , 2021

TABLE OF CONTENTS

Neither we nor the underwriters have authorized anyone to provide any information or to make any representations other than those contained in this prospectus or in any free writing prospectuses prepared by or on behalf of us or to which we have referred you. We and the underwriters take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. This prospectus is an offer to sell only the shares offered hereby, but only under circumstances and in jurisdictions where it is lawful to do so. The information contained in this prospectus or in any applicable free writing prospectus is current only as of its date, regardless of its time of delivery or any sale of shares of our common stock. Our business, financial condition, results of operations, and prospects may have changed since that date.

Through and including                     , 2021 (the 25th day after the date of this prospectus), all dealers effecting transactions in these securities, whether or not participating in this offering, may be required to deliver a prospectus. This delivery requirement is in addition to a dealer’s obligation to deliver a prospectus when acting as underwriters and with respect to an unsold allotment or subscription.

Neither we nor the underwriters have done anything that would permit this offering or possession or distribution of this prospectus or any free writing prospectus we may provide to you in connection with this offering in any jurisdiction where action for that purpose is required, other than in the United States. You are required to inform yourselves about and to observe any restrictions relating to this offering and the distribution of this prospectus and any such free writing prospectus outside of the United States.

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

RISK FACTORS

Investing in our Class A common stock is speculative and involves a high degree of risk. Before investing in our Class A common stock, you should consider carefully the risks described below, together with the other information contained in this prospectus, including our financial statements and the related notes appearing at the end of this prospectus. If any of the following risks occur, our business, financial condition, results of operations, and future growth prospects could be materially and adversely affected. In these circumstances, the market price of our Class A common stock could decline, and you may lose all or part of your investment. This prospectus also contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those anticipated in the forward-looking statements as a result of a number of factors, including the risks described below. See “Information Regarding Forward-Looking Statements.”

Risks Related to Our Business and Our Industry

We have a history of cumulative losses, and we do not expect to be profitable for the foreseeable future.

We incurred net losses of $1.0 million and $6.6 million for the years ended December 31, 2019 and 2020. Over our 14 years of operations, we had an accumulated deficit of $20.7 million as of June 30, 2021. We cannot guarantee that we will continue operating our business similar to past performance. We intend to continue scaling our business to increase our customer base and to meet the increasingly complex needs of our customers. We have invested, and expect to continue to invest, in our sales and marketing organization to sell our cloud services around the world and in our development organization to deliver additional features and capabilities of our cloud services to address our customers’ evolving needs. We also expect to continue to make significant investments in our data center infrastructure and technical operations organization as we further scale our business. As a result of our continuing investments to scale our business in each of these areas, we do not expect to be profitable for the foreseeable future. We cannot assure you that we will achieve profitability in the future or that, if we do become profitable, we will sustain profitability.

The markets in which we participate are intensely competitive, and if we do not compete effectively, our operating results would be harmed.

The markets in which we operate are highly competitive, with relatively low barriers to entry for certain applications and services. Some of our competitors include cloud-based services such as those offered by Amazon.com, Inc. through Amazon Web Services, Alphabet Inc. through Google Cloud Platform, and Microsoft Corporation through Azure, and on-premises offerings such as those offered by EMC/Dell and NetApp. Many of our competitors and potential competitors are larger and have greater name and brand recognition; much longer operating histories; larger marketing budgets for the development, promotion and sale of their products or services; broader service offerings and capabilities; and significantly greater resources than we do. In addition, many of our competitors have established marketing and distribution relationships with channel partners, consultants, system integrators, and resellers. Our competitors may also be able to respond more quickly and effectively to new or changing opportunities, technologies, standards, or customer requirements. Competition may intensify in the future and may also include new market entrants. Our competitors could offer their products or services at a lower price or in some combination with other services or applications that we do not offer, which could result in pricing pressures on our business. Increased competition generally could result in reduced sales, lower margins, losses, or the failure of our cloud services to achieve or maintain widespread market acceptance, any of which could harm our business.

Any significant disruption in our service or loss, or delay in availability of our customers’ data, could damage our reputation and harm our business and operating results.

Our brand, reputation, and ability to manage our systems; attract, retain, and serve our customers; and interface with our partners, are dependent upon the reliable performance of our platform, including our underlying technical infrastructure, as well as the systems and infrastructure of various third parties, including third-party hosted data centers that we use and internet access and infrastructure used by us and our customers

20

and partners. Our customers rely on our platform to store and access their data, including financial records, business information, personal information, documents, media, and other important content. There are various reasons that our platform, or the systems that are used to access or support our platform, could experience a disruption in service, some of which are entirely outside of our control. For example, our facilities as well as the data centers that we use are vulnerable to damage or interruption from human error, intentional bad acts, earthquakes, floods, fires, war, terrorist attacks, power losses, hardware failures, systems failures, telecommunications failures, and similar events, any of which could disrupt our service, destroy user content, or prevent us from being able to continuously back up or record changes in our users’ content. If any of these events occur, customer data could be lost and it may take a significant period of time to achieve full resumption of our cloud services. Our disaster recovery planning cannot account for all eventualities and even if we anticipate an incident, our disaster recovery plans may not be sufficient to timely and effectively address the issue. Moreover, our platform and technical infrastructure may not be adequately designed with sufficient reliability and redundancy to avoid delays or outages that could be harmful to our business. If our platform is unavailable when users attempt to access it, or if it does not load as quickly as they expect, or if data is lost, users may not use our platform as often in the future, or at all.

If we are unable to maintain our brand and reputation, our business, results of operations, and financial condition may be adversely affected.

The successful promotion of our brand and our ability to maintain our reputation will depend on a number of factors, including our performance and the reliability of our cloud services; our advertising and marketing efforts, including our blog and social media presence, which have been important to building and maintaining our brand and reputation; our ability to continue to develop high-quality features and cloud services; and our ability to successfully differentiate our cloud services from competitive products and services. Our brand promotion activities may not be successful or yield increased revenue.

The promotion of our brand may require us to make substantial expenditures, particularly as our markets become more competitive and we expand into new markets or offer additional features. Expenditures intended to maintain and enhance our brand may not be cost-effective or effective at all. If we do not successfully maintain and enhance our brand, we may have reduced pricing power relative to our competitors, we could lose customers, we could fail to attract potential new customers or retain our existing customers, or our blog and thought leadership in our industry may decline in popularity, all of which could materially and adversely affect our business.

If our information technology systems, including the data of our customers stored in our systems, are breached or subject to cybersecurity attacks, our reputation and business may be harmed.

Our customers rely on our solutions to store their files, which may include confidential or personally identifiable information, critical business information, photos, and other meaningful content. To manage and maintain such data, we are highly dependent on internal and external information technology systems and infrastructure, including the internet, to securely process, transmit, and store critical information. Although we take measures to protect sensitive information from unauthorized access or disclosure, third parties may be able to circumvent our security by deploying viruses, worms, and other malicious software programs that are designed to attack or attempt to infiltrate our systems and networks, including distributed denial of service (DDoS) attacks that can undermine the availability and performance of our systems and cloud services, or phishing attacks that can be used to fraudulently steal data. Moreover, cybersecurity attacks evolve rapidly and may utilize new methods not recognized. We may be unable to successfully identify, stop, or resolve such attacks, or implement adequate preventative measures. In addition, employee or consultant error, malfeasance, or other errors in the storage, use, or transmission of customer data could result in a breach. For example, in late March 2021, it was discovered that a Backblaze marketing campaign leveraging the Facebook ad network, which had been launched two weeks earlier, had been incorrectly configured to run on all Backblaze platform pages instead of only the Backblaze marketing pages as intended. Once we became aware of the issue, it was promptly resolved. Although we believe that less than 2% of Backblaze customers may have been affected, and no actual customer files, file contents, or user account information were shared at any time, certain file metadata may have been inadvertently

21

shared with Facebook. Even if a breach is detected, the full extent of the breach may not be determined immediately, or at all. While we maintain insurance coverage to mitigate the potential financial impact of these risks, our insurance may not cover all such events or may be insufficient to compensate us for potentially significant losses, including the potential damage to the future growth of our business, that may result from any such breach. In addition, our business utilizes information technology systems of our partners and vendors, who are also subject to similar cybersecurity risks that could adversely impact the security of our systems and business. We may have little or no control over how cybersecurity attacks on our partners or vendors are addressed. An actual or perceived breach of our network security and systems or other cybersecurity-related events that cause the loss, theft or unauthorized disclosure of our customers’ information, including any delay in determining the full extent of a potential breach, could have a material adverse impact on our business, results of operations, and financial condition, including harm to our reputation and brand, reduced demand for our solutions, time-consuming and expensive litigation, fines, penalties, and other damages.

If we are unable to attract and retain customers on a cost-effective basis, our revenue and operating results would be adversely affected.

We generate substantially all of our revenue from the sale of our cloud services either on a consumption or subscription model. To grow, we must continue to attract a large number of customers on a cost-effective basis. We have historically used, and plan to increase our use of, a variety of advertising and marketing programs to promote our cloud services. These programs, including any expansion of existing programs and new programs to promote our cloud services, may not be successful or provide a reasonable return on investment within a desired timeframe. Significant increases in the pricing of one or more of our advertising channels would increase our advertising and marketing costs or cause us to choose less expensive and perhaps less effective channels. We may also need to expand into channels with significantly higher costs, which could adversely affect our operating results. We may also incur advertising and marketing expenses significantly in advance of the time we anticipate recognizing any revenue generated by such expenses, and we may only at a later date, or never, experience an increase in revenue or brand awareness as a result of such expenditures. If we are unable to maintain effective advertising and marketing programs, our ability to attract new customers could be adversely affected, our advertising and marketing expenses could increase substantially, and our operating results may suffer.

A portion of our potential customers locate our website through search engines, such as Google, Bing, and Yahoo!. Our ability to maintain the number of visitors directed to our website is not entirely within our control. If search engine companies modify their search algorithms in a manner that reduces the prominence of our listing, or if our competitors’ search engine optimization efforts are more successful than ours, fewer potential customers may click through to our website. In addition, the cost of purchased listings has increased in the past and may increase in the future. A decrease in website traffic or an increase in promoted search result costs could adversely affect our customer acquisition efforts and our operating results. In addition, we also rely on our blog and word of mouth to drive additional customers. To the extent our blog does not continue to attract readers or if our reputation is harmed, these additional means of attracting customers may no longer provide significant numbers of customers in the future.

In addition, because we offer our Computer Backup cloud service at a fixed price, the amount of data our customers back up affects our costs and gross margins. To the extent current or future customers back up unusually large amounts of data, or growth in the amount of data backed up per customer outpaces decreases in storage costs, our costs and gross margins could be adversely affected.

If we are unable to provide successful enhancements, new features, and modifications to our cloud services, our business could be adversely affected.

Our industry is marked by rapid technological developments and new and enhanced applications and cloud services. If we are unable to provide enhancements and new features for our existing services or new services that achieve market acceptance or that keep pace with rapid technological developments, our business could be adversely affected. In addition, because our cloud services are designed to operate on a variety of

22

systems, we will need to continuously modify and enhance our cloud services to keep pace with changes in internet-related hardware, operating systems, and other software, communication, browser, and database technologies, including the systems of our partners, vendors, and competitors. We may not be successful in either developing these modifications and enhancements or in bringing them to market in a timely fashion. For example, we may not be successful in launching our cloud replication feature in the timeframe we anticipate. Any failure of our cloud services to operate effectively and on a timely basis with network platforms and technologies could reduce the demand for our cloud services, result in customer dissatisfaction and adversely affect our business. Furthermore, future enhancements may increase our research and development expenses and infrastructure costs, which could adversely impact our pricing advantage, undermine our ease of use, make it more difficult to attract and retain customers, and harm our results of operations.

Material defects or errors in our software could harm our reputation, result in significant costs to us, and negatively impact our ability to sell our cloud services.

The software underlying our cloud services is inherently complex and may contain material defects or errors, particularly when first introduced or when new versions or enhancements are released. We have from time to time found defects or errors in our cloud services, and new defects or errors in our existing solutions may be detected in the future by us, our customers or partners, or other third parties. The costs incurred in correcting such defects or errors may be substantial and could harm our operating results. Backblaze employees could also introduce defects or errors through incompetence, malfeasance, or a mistake that would lead to data loss. For example, to the extent that the encryption keys for encrypted customer data stored by Backblaze were to be deleted or corrupted, the data could become unrecoverable. In addition, we rely on hardware purchased or leased and software licensed from third parties to offer our cloud services. Any defects in, or unavailability of, our software that cause interruptions to the availability of our cloud services could, among other things:

If we fail to effectively manage our growth, our business would be harmed.

We have recently experienced, and continue to experience, a period of rapid growth. For example, our headcount grew from 82 employees as of December 31, 2018, to 126 employees as of December 31, 2019, to 188 employees as of December 31, 2020 and to 228 employees as of June 30, 2021. Also, in just the last two years the amount of storage deployed by us has more than doubled. The number of customers and customer requests on our network has also increased rapidly in recent years. While we expect to continue to expand our operations and to increase our headcount, network, and product offerings significantly in the future, our growth may not be sustainable. Our growth has placed, and future growth will continue to place, a significant strain on our management, corporate culture, quality of our cloud services, and administrative, operational, security, and financial infrastructure. Our success will depend in part on our ability to manage this growth effectively, which will require that we, among other things, continue to improve our administrative, operational, financial, and management systems and controls.

Our business depends on our ability to retain and increase revenue from customers, and if we are unable to do so, our revenue and operating results would be adversely affected.

It is important for our business that our customers continue to use, and even increase their use of, our cloud services. Many of our customers can terminate their use of our cloud services at will with little-to-no advance notice. Even though some of our customers enter into longer-term agreements of up to two years, they generally have no obligation to renew their subscriptions or increase usage. Due to our varied customer base and

23

lack of long-term customer and usage commitments, it can be difficult to accurately predict our customer retention rate on a quarterly basis or long-term basis. Our customer retention and the amount of data that they store with us may decline or fluctuate as a result of a number of factors, including potential customer dissatisfaction with our cloud services and offerings; pricing plans; our customers’ own business conditions; customer decisions to delete unneeded or redundant data; the perception, whether or not accurate, that competitive products provide better options; changes in our brand or reputation; and overall general economic conditions. Our future financial performance also depends in part on our ability to continue to increase revenue from our customers through additional paid products, such as Extended Version History and multi-region selection. Our customers’ decision whether to opt for additional paid products is driven by a number of factors. If our customers do not perceive the value in such additional paid offerings, we may not realize the anticipated benefits of our investments in such additional features, and our financial results could be harmed. If we cannot successfully retain our existing customers and add new customers consistent with historical rates, including maintaining or growing the amount of data that our customers store with us, our revenue and ability to grow may be adversely affected.

To the extent we target different types of customers, we may face increased demands and challenges that adversely impact our business and operations.

Historically, most of our customers consisted of small-to-medium sized businesses and individuals. To the extent we target other types of customers or customers with different needs, we may face greater demand for certain service enhancements or features that we do not currently offer, or additional performance, availability, durability, and security requirements. Certain types of customers may also have longer sales cycles, less predictability or higher volatility in the amount of data they store with us, increased pricing or negotiation leverage, and increased customer education and overall customer engagement needs. In addition, some customers may demand more customization, integration, and support services. Any of these factors could require us to devote greater sales, engineering, operations, and support services as well as make significant infrastructure changes, which could increase our costs, divert key resources from other current and prospective customers, and otherwise adversely affect our business and operating results. These increased demands and challenges may also be for the benefit of a limited number of customers. Moreover, we cannot assure you that any such efforts will be successful or justify the additional investments in a timely manner, or at all.    

The material stored using our cloud services may subject us to negative publicity, legal liability, and harm our business.

We are not aware of the contents of the data that customers store using our cloud services. While we do have a detailed process to address any third-party complaint regarding illegal or other inappropriate use of our cloud services by a customer that would violate our terms of service, we do not actively monitor the content of data that is being stored with us. To the extent that sensitive, personally identifiable, illegal, or controversial data is stored in our servers and that becomes known publicly, particularly given the highly volatile nature of the political landscape throughout the world and immediate access by individuals to social media platforms with a broad outreach, it may create negative publicity and adversely impact our reputation and harm our business.    

Our quarterly results may fluctuate significantly and may not fully reflect the underlying performance of our business.

Our quarterly results of operations may vary significantly in the future. Accordingly, the results of any one quarter should not be relied upon as an indication of future performance. Our quarterly results of operations may fluctuate as a result of a variety of factors, many of which are outside of our control, and as a result may not fully reflect the underlying performance of our business. Fluctuation in quarterly results may negatively impact the trading price of our Class A common stock. Factors that may cause fluctuations in our quarterly results of operations include, without limitation:

24

Further, as we continue to grow and scale our business to meet the needs of our customers, we may overestimate or underestimate our infrastructure capacity requirements, which could adversely affect our results of operations. The costs associated with leasing and maintaining our custom-built infrastructure in co-location facilities and third-party data centers already constitute a significant portion of our capital and operating expenses. We continuously evaluate our short and long-term infrastructure capacity requirements and seek to ensure adequate capacity for new and existing users while minimizing unnecessary excess capacity costs. However, we may not be able to sufficiently predict future demand, or the availability of hardware or infrastructure necessary to support increased demand on a timely basis. If we overestimate the demand for our platform and therefore secure excess infrastructure capacity or equipment, our gross margins could be reduced. If we underestimate our infrastructure capacity requirements or availability of necessary hardware or infrastructure, we may not be able to service the needs of new and existing customers; durability, reliability, and performance could suffer; our costs could rise; and our business could be harmed.

We rely on the performance of key personnel, including our management and other key employees, and the loss of one or more of such personnel, or of a significant number of our team members, could harm our business.

We believe our success has depended, and continues to depend, on the efforts and talents of senior management, including our founders and other key personnel. All of our employees, including our senior

25

management, are employed on an at-will basis. Furthermore, our founders and other key personnel hold shares or equity awards that are largely vested, and as result, they may not be incentivized to remain with our company once there is a trading market for our Class A common stock. We cannot ensure that we will be able to retain the services of any member of our senior management or other key employees or that we would be able to timely replace members of our senior management or other key employees should any of them depart. The loss of one or more members of our senior management or other key employees could harm our business.

The failure to attract and retain additional qualified personnel could prevent us from executing our business strategy.

To execute our business strategy, we must attract and retain highly qualified personnel. Competition for executive officers, software developers, sales personnel, operational personnel, and other key employees in our industry is intense. In particular, we compete with many other companies for software developers with high levels of experience in designing, developing, and managing cloud-based software, as well as for skilled sales and operations professionals. In addition, we believe that the success of our business and corporate culture depends on employing a diverse workforce, and the competition for such personnel is significant. The market for such talented personnel is particularly competitive in the San Francisco Bay Area, where our headquarters is located. Many of the companies with which we compete for experienced personnel have greater resources than we do and can frequently offer such personnel substantially greater compensation than we can offer. If we fail to attract new personnel or fail to retain and motivate our current personnel, our business would be harmed.

Our corporate culture has contributed to our success, and if we cannot maintain this culture as we grow, we could lose the innovation, creativity, and teamwork fostered by our culture, and our business may be harmed.

We have a culture that encourages employees to be open, collaborate, strive to do the right thing, and develop and launch new and innovative solutions, which we believe is essential to attracting customers and partners and serving the best, long-term interests of our company. As our business grows and becomes more complex, and as we become a public company, it may become more difficult to maintain this cultural emphasis. Any failure to preserve our culture could negatively affect our ability to retain and recruit personnel, which is critical to our growth, and to effectively focus on and pursue our strategies. If we fail to maintain our company culture, our business and competitive position may be harmed.

As we expand our operations outside the United States, we may be subject to increased business, regulatory and economic risks that could impact our results of operations.

In 2020, we derived approximately 28% of our revenue from customers outside of the United States. We may also expand our international operations, which may include hiring employees, building out technical infrastructure, and opening offices in foreign jurisdictions. Any new markets or countries into which we attempt to market and sell our cloud services may not be receptive. For example, we may be unable to expand further in some markets if we are unable to satisfy various government- and region-specific requirements. In addition, our ability to manage our business and conduct our operations internationally requires considerable management attention and resources and is subject to the particular challenges and complexities of deploying infrastructure internationally and supporting a rapidly growing business in an environment of multiple languages, cultures, customs, legal and regulatory systems, alternative dispute systems, and commercial markets. International expansion has required, and will continue to require, investment of significant funds and other resources. Growth in our international operations will subject us to new risks and may increase risks that we currently face, including risks associated with:

26

Expanding our international operations and complying with applicable foreign laws and regulations may substantially increase our cost of doing business in international jurisdictions. We may also be unable to keep current with changes in laws and regulations as they develop, and we or our employees, contractors, partners, and agents may fail to maintain compliance with applicable laws and regulations. Any violations could result in enforcement actions, fines, civil and criminal penalties, damages, injunctions, or reputational harm. If we are unable to comply with these laws and regulations or manage the complexity of our global operations successfully, our business, results of operations, and financial condition could be adversely affected.

We store personal information and other customer data, which subjects us to various data privacy laws, governmental regulations, and other related legal obligations, and any actual or perceived failure to comply with such requirements could harm our business.

We store personal information and other customer data, as well as use certain cookies on our website, that are subject to numerous federal, state, local, and foreign laws regarding privacy and the storing and protection of personal information and other customer data, and disclosure requirements regarding the use and certain breaches of such laws. For example, we are subject to the General Data Protection Regulation (GDPR) and the California Consumer Privacy Act (CCPA), among other laws and regulations around the world. Other comprehensive data privacy or data protection laws or regulations requiring local data residency and/or restricting the international transfer of data have been passed or are under consideration in other jurisdictions. In

27

addition, some industries have industry-specific requirements relating to compliance with certain security and regulatory standards, such as those required by the Health Insurance Portability and Accountability Act (HIPAA). For example, HIPAA imposes privacy, security, and breach reporting obligations with respect to individually identifiable health information upon “covered entities” (e.g., health plans, health care clearinghouses, and certain health care providers), and their respective business associates, individuals, or entities that create, receive, maintain or transmit protected health information in connection with providing a service for or on behalf of a covered entity. Such laws give rise to an increasingly complex set of compliance obligations on us regarding our ability to gather, use, and store customer data and customer account data.

These laws are subject to rapid change, differing interpretations, and can be inconsistent among regulatory frameworks or conflict with other rules or our business practices. We strive to comply with all applicable laws, policies, legal obligations, and industry codes of conduct relating to privacy and data protection to the extent possible. Our efforts to comply with the complex matrix of data privacy laws around the world subjects us to increasing costs to review and comply with such laws, including updating our policies, procedures, and business practices to address such evolving privacy laws. We also make public statements and commitments regarding our use and disclosure of personal information through our privacy policy, information provided on our website, and data processing agreements with customers and other third parties. Because the interpretation and application of data protection laws, regulations, standards, and other obligations are often uncertain and in flux, and sometimes contradictory, it is possible that the scope and requirements of these laws and other obligations may be interpreted and applied in a manner that is inconsistent with our practices, and our efforts to comply with rapidly evolving data protection laws and obligations may be unsuccessful. For example, we previously relied on the EU-US Privacy Shield framework, which was invalidated by a European court in July 2020. As a result of such a decision, we have had to take additional steps to comply with applicable EU data protection requirements, including implementation of standard contractual clauses.

Any failure, or perceived failure, by us to comply with applicable privacy and security laws, policies, or related contractual obligations, or any compromise of security that results in unauthorized access, or the use or transmission of personal information or other customer data, could result in a variety of claims against us, including governmental enforcement actions and investigations, audits, inquiries, whistleblower complaints, class action privacy litigation in certain jurisdictions, and proceedings by data protection authorities. For example, under the GDPR we may be subject to fines of up to €20 million or up to 4% of the total worldwide annual group turnover of the preceding financial year, as well as potentially face claims from individuals. The CCPA provides for civil penalties for violations, as well as a private right of action for certain data breaches that result in the loss of personal information. This private right of action may increase the likelihood of, and risks associated with, data breach litigation. Any non-compliance with data privacy requirements could subject us to significant fines and penalties, adverse media coverage, reputational damage, the loss of current and potential customers, loss of export privileges, or criminal or other civil sanctions, any of which could materially adversely affect our business and financial condition.

The ongoing COVID-19 pandemic, and resulting global economic downturn, has impacted how we, our customers, and our partners are operating, and could result in a material adverse effect on our business.

The ongoing COVID-19 pandemic, and measures taken to control its spread such as travel restrictions, shelter-in-place orders, and business shutdowns, have affected all of the regions in which we conduct business and in which our customers, partners, and suppliers are located; have adversely impacted global economic activity; and have contributed to volatility in financial markets. As the situation around the spread of the COVID-19 pandemic evolves, we have continued to operate in a modified manner—employing precautionary measures designed to protect the health of our employees while enabling us to support our customers and partners. Among other modifications, we generally required our employees to work remotely; instituted business-related travel restrictions; and virtualized, postponed, or cancelled various sales and marketing, employee, and industry events. The remote work measures that we implemented have generally allowed us to provide uninterrupted service to our customers and partners, but have also introduced additional challenges and

28

operational risks, including increased supply chain risks and cybersecurity risks, and have affected the way we conduct various other activities. For example, starting in April 2020, we began to acquire additional hard drives and related infrastructure through capital lease agreements in order to minimize the impact of potential supply chain disruptions. The additional leased hard drives resulted in a higher balance of capital equipment and related lease liability, an increase in cash used in financing activities from principal payments, as well as a higher ongoing interest and depreciation expense related to these lease agreements. The supply chain for other infrastructure and related equipment essential to our business may also become constrained or unavailable on favorable terms or at all.

The COVID-19 pandemic has been challenging and a hardship on many of our employees, and required us to operate under substantially novel constraints. The pandemic has resulted in various inefficiencies, delays, and additional costs across our company, which may continue or worsen as the pandemic continues. In addition, work from home and related business practice modifications present significant challenges to maintaining our corporate culture, including employee engagement and productivity, both during the immediate pandemic crisis and as we make additional adjustments in the eventual transition from it.

The duration and severity of the COVID-19 pandemic, including variants of COVID-19 that may be more transmissible, more likely to result in severe illness or death, or less susceptible to treatments or protection from existing vaccines, and the degree of its impact on our business remains uncertain and difficult to predict. Our customers or partners could experience downturns or uncertainty in their own business operations or revenue due to COVID-19, which may result in decreased revenue for our business, especially as it may disproportionally adversely affect mid-market businesses on which we are especially dependent. As a result, we may experience customer losses due to customer bankruptcy or cessation of operations, or otherwise.

If the COVID-19 pandemic worsens or is prolonged, especially in regions where we have material operations or sales, our business operations in affected areas, including sales-related and customer support activities, could be adversely affected by continued or additional business closures, travel restrictions impacting employees and partners, and other precautionary measures. While we have developed and continue to develop plans to help mitigate the negative impact of the pandemic on our business, these efforts may not be effective and a protracted economic downturn may limit the effectiveness of our mitigation efforts. The COVID-19 pandemic may also have the effect of heightening many of the other risks described in this “Risk Factors” section.

Our business is substantially dependent on mid-market organizations, which may be more vulnerable to market fluctuations and other economic factors, and their vulnerability to such factors could negatively impact our business.

If we are unable to successfully market and sell our cloud services to mid-market organizations, our ability to grow our revenue and achieve profitability will be harmed. We expect it will be more difficult and expensive to attract and retain mid-market organization customers than other customers because mid-market organizations are more frequently forced to curtail or cease operations due to the sale or failure of their business; can be more difficult to identify and may require more expensive, targeted sales campaigns; and generally have lesser amounts of data to store than larger organizations, thus requiring us to successfully sell to and support more mid-market organizations for meaningful revenue impact. In addition, mid-market organizations frequently have limited budgets and are more likely to be significantly affected by economic downturns than larger, more established companies. As a result, mid-market organizations may choose to spend funds on items other than our cloud services, particularly during difficult economic times. If we do not achieve continued success among mid-market organizations, our business, operating results, and future growth would be adversely affected.

We are dependent on a small number of service offerings, and any reduced market adoption of these offerings would result in lower revenue and harm our business.

As a pure-play cloud vendor, we are dependent on a small number of offerings focused on cloud storage and computer backup, and a limited number of corresponding use cases. Our B2 Cloud Storage and Computer

29

Backup offerings have accounted for substantially all of our total revenue to date and we anticipate that they will continue to do so for the foreseeable future. As a result, our revenue could be reduced as a result of any general or industry decline in demand for cloud-based storage solutions, particularly given that we would not have meaningful revenue from other market sectors to offset any temporary or longer-term downturn in demand for cloud-based storage solutions.

Adverse economic conditions may adversely impact our revenue and profitability.

Our operations and financial performance depend in part on worldwide economic conditions and the impact these conditions have on levels of spending on cloud storage solutions. Our business depends on the overall demand for these products and on the economic health and general willingness of our current and prospective customers to purchase our cloud services. Some of our paying customers may view use of cloud storage services as a discretionary purchase and may reduce their discretionary spending on our cloud services during an economic downturn. Weak economic conditions, whether due to COVID-19 or other factors, could cause a reduction in spending on products and solutions storage, which could reduce sales, lengthen sales cycles, increase customer churn, and lower demand for our cloud services, any of which could adversely affect our business, results of operations, and financial condition.

Our ability to maintain customer adoption and satisfaction depends in part on the ease of use of our cloud services, and any such failure could have an adverse effect on our business.

Our success in retaining existing customers and obtaining new customers is dependent in part on the ease of use of our cloud services. If our platform and cloud services, including new service offerings and features as they become available, become more complicated and less easy-to-use, customers could experience increased difficulties or disruption with storing or accessing their data, and we may lose existing customers or experience increased challenges obtaining new customers or existing customers may not choose to use additional features of our cloud services. In addition, our customers sometimes depend on our technical support services to resolve issues relating to our platform. If we do not succeed in helping our customers quickly resolve issues or provide effective ongoing education related to our platform, our reputation and business may be harmed.

Future acquisitions and investments could disrupt our business and harm our financial condition and operating results.

Our success will depend, in part, on our ability to grow our business in response to changing technologies, customer demands, and competitive pressures. In some circumstances, we may choose to do so through the acquisition of complementary businesses and technologies rather than through internal development. The identification of suitable acquisition candidates can be difficult, time-consuming, and costly, and we may be unable to successfully complete proposed acquisitions. The risks we face in connection with acquisitions include:

30

Future acquisitions could also result in dilutive issuances of our equity securities, the incurrence of debt, contingent liabilities, amortization expenses, incremental operating expenses, or the write-off of goodwill, any of which could harm our financial condition or operating results.

We may require additional capital to support our operations or the growth of our business, and we cannot be certain that this capital will be available on reasonable terms when required, or at all.

We may need additional financing to operate or grow our business. Our ability to obtain additional financing, if and when required, will depend on investor and lender demand, our operating performance, the condition of the capital markets, and other factors. For example, we often use capital leases to finance the equipment we use to provide our cloud-based services. Without additional access to this kind of capital on commercially reasonable terms, or at all, we may not be able to respond to increased demand for our cloud services on a timely or cost-effective basis. We cannot guarantee that additional financing will be available to us on favorable terms when required, or at all. If we raise additional funds through the issuance of equity, equity-linked, or debt securities, those securities may have rights, preferences, or privileges senior to the rights of our Class A common stock, and our existing stockholders may experience dilution. If we are unable to obtain adequate financing or financing on terms satisfactory to us when we require it, our ability to continue to support the operation or growth of our business could be significantly impaired and our operating results may be harmed.

We are an emerging growth company, and any decision on our part to comply only with certain reduced reporting and disclosure requirements applicable to emerging growth companies could make our Class A common stock less attractive to investors.

We are an emerging growth company, and for as long as we continue to be an emerging growth company, we may choose to take advantage of exemptions from various reporting requirements applicable to other public companies but not to “emerging growth companies,” including: not being required to have our independent registered public accounting firm audit our internal control over financial reporting under Section 404 of the Sarbanes-Oxley Act of 2002, as amended (the Sarbanes Oxley Act), reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements, and exemptions from the requirements of holding a non-binding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. Under the JOBS Act, emerging growth companies can also delay adopting new or revised accounting standards until such time as those standards apply to private companies. We have elected to avail ourselves of this accommodation allowing for delayed adoption of new or revised accounting standards, and therefore, we will not be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies. We could be an emerging growth company for up to five years following the completion of this offering or until we reach certain thresholds. Investors may find our Class A common stock less attractive due to our election to rely on these exemptions and there may be a less active trading market for our Class A common stock and the market price of our Class A common stock may be more volatile.

31

We are exposed to fluctuations in currency exchange rates, which could negatively affect our results of operations.

All of our sales contracts are currently denominated in U.S. dollars and therefore, our revenue is not directly subject to foreign currency risk. However, a strengthening of the U.S. dollar could increase the real cost of our cloud services to our customers outside of the United States, which could reduce demand for our cloud services and adversely affect our financial condition and results of operations. In addition, as we expand our international operations, we may become more exposed to foreign currency risk and may have some of our sales denominated in one or more currencies other than the U.S. dollar. If we become more exposed to currency fluctuations and are unable to successfully hedge against the risks associated with currency fluctuations, our results of operations could be materially and adversely affected.

Certain of our market opportunity estimates, growth forecasts, and other metrics included in this prospectus could prove to be inaccurate, and any real or perceived inaccuracies may harm our reputation and negatively affect our business.

Certain estimates and information contained in this prospectus, including general expectations concerning our industry and the market in which we operate, market opportunity, and market size, are subject to significant uncertainty and are based on assumptions and estimates that may not prove to be accurate. Moreover, much of this information is based on information provided by third-party providers. Although we believe the information from such third-party sources is reliable, we have not independently verified the accuracy or completeness of the data contained in such third-party sources or the methodologies for collecting such data, and such information may also not prove to be accurate. If there are any limitations or errors with respect to such data or methodologies, our business opportunities may be limited, which could negatively affect our shares of Class A common stock. Even if the markets in which we compete meet the size estimates and growth forecasted in this prospectus, our business could fail to grow at similar rates, if at all.

Any future litigation against us could be costly and time-consuming to defend.

We may become subject to legal proceedings, investigations, and claims that arise in the ordinary course of business. For example, we may be subject to claims brought by customers in connection with commercial disputes or employment claims made by our current or former employees. Litigation can often be expensive, even when there is a successful outcome, and can divert management’s attention and resources, which could harm our business and financial condition. Any adverse outcome could also result in significant monetary damages or other types of unfavorable relief, which could harm our business as well as our reputation. Although we may have various insurance policies, insurance might not cover such claims or provide sufficient payments to cover all the costs to resolve one or more such claims, and might not continue to be available on terms acceptable to us, including premium increases or the imposition of large deductible or co-insurance requirements. In addition, we may also be subject to subpoena requests from third parties as well as governmental agencies from time to time that require us to provide certain information relating to matters targeted against other third parties, which can be time consuming.

Risks Related to Reliance on Infrastructure and Third Parties

We rely on third-party vendors and suppliers, including data center and hard drive providers, which may have limited sources of supply, and this reliance exposes us to potential supply and service disruptions that could harm our business.

We depend on a limited number of third-party data centers and other providers to safely house our equipment and provide sufficient power, bandwidth, and other infrastructure needs to support our operations and cloud services. We also rely on key components for our platform, including hard drives and semiconductors, which come from limited sources of supply. For example, the 2011 Thailand floods decreased hard drive supply

32

globally due to related manufacturing stoppages. A similar decrease in hard drive availability could negatively impact our operations. The COVID-19 pandemic as well as fluctuating demands in the cryptocurrency mining markets also have impacted, and could continue to impact, our ability to source components in a timely and cost-effective manner from third-party suppliers. For example, starting in April 2020, we began to acquire additional hard drives and related infrastructure through capital lease agreements in order to minimize the impact of potential supply chain disruptions due to the COVID-19 pandemic. The additional leased hard drives resulted in a higher balance of capital equipment and related lease liability, an increase in cash used in financing activities from principal payments, as well as a higher ongoing interest and depreciation expense related to these lease agreements. The semiconductor industry is also experiencing a global chip shortage due to the COVID-19 pandemic and various other factors. Any shortage of key components, including hard drives, could materially and adversely affect our ability to provide our cloud services, as well as negatively impact our financial results by increasing our costs, lease liabilities, interest and depreciation expenses, and inventory levels. Shortages or pricing fluctuations could be material in the future. In the event of a shortage, supply interruption, or material pricing change from our suppliers, we may be unable to develop alternate sources in a timely manner or at all. Developing alternate sources of supply for these infrastructure needs may be time-consuming, difficult, and costly and we may be unable to source them on terms that are acceptable to us, or at all, which may undermine our ability to scale our platform and harm our business.

Our business depends, in part, on the success of our strategic relationships with third parties.

To maintain and grow our business, we anticipate that we will continue to depend on relationships with third parties, such as channel partners and integrators. Identifying partners and negotiating and building relationships with them requires significant time and resources. Our competitors may be effective in providing incentives to third parties to favor their services over us. In addition, any industry consolidation of such partners or integrators by our competitors or others could result in a decrease in the number of our current and potential customers, as these partners or integrators may no longer facilitate the adoption of our applications by potential customers. Interoperability between our platform and other third-party platforms is also important to our business. Further, some of our partners or integrators are or may become competitive with certain aspects of our cloud services and may elect to no longer integrate with, or support, our platform and cloud services. If we are unsuccessful in establishing or maintaining our relationships with such third parties and maintaining interoperability, our ability to compete in the marketplace or to grow our revenue could be impaired, and our business may suffer. Even if we are successful, we cannot assure you that these relationships will result in increased customer usage of our cloud services or increased revenue.

Our business is exposed to risks associated with online payment processing methods.

Many of our customers pay for our cloud services and products using credit cards. We rely on internal systems as well as those of third parties to process payments. Acceptance and processing of these payment methods are subject to certain rules and regulations and require payment of interchange and other fees. To the extent there are increases in payment processing fees, material changes in the payment ecosystem, such as large re-issuances of payment cards, delays in receiving payments from payment processors, changes to rules or regulations concerning payment processing, loss of payment partners, and/or disruptions or failures in our payment processing systems or payment products, including products we use to update payment information, our revenue, operating expenses, and results of operation could be adversely impacted.

We rely on third-party software for certain essential financial and operational services, and a failure or disruption in these services could materially and adversely affect our ability to manage our business effectively.

We rely on third-party software to provide many essential financial and operational services to support our business, including HubSpot, NetSuite, PagerDuty, Stripe, and ZenDesk. Some of these vendors are less established and have shorter operating histories than traditional software vendors. Moreover, many of these

33

vendors provide their services to us via a cloud-based model instead of software that is installed on our premises. As a result, we depend upon these vendors to provide us with services that are always available and are free of errors or defects that could cause disruptions in our business processes. Any failure by these vendors to do so, or any disruption in our ability to access the internet, would materially and adversely affect our ability to manage our operations, disrupt the delivery of our cloud services to customers, and affect other areas such as our ability to timely provide required financial reporting.

Risks Related to Accounting and Tax Matters

We have identified material weaknesses in our internal controls over financial reporting, and the failure to achieve and maintain effective internal controls over financial reporting could harm our business and negatively impact the value of our Class A common stock.

We have identified material weaknesses in our internal controls over financial reporting, and if we are not able to effectively remediate our material weaknesses or are otherwise unable to maintain an effective system of internal controls over financial reporting, we may not be able to accurately report our financial results or timely file our periodic reports. As a result, investors may lose confidence in the accuracy and completeness of our financial reports, and the market price of our Class A common stock may be materially impacted.

Our management determined that as of December 31, 2019 we did not maintain effective internal controls over financial reporting, and identified four material weaknesses, specifically related to control activities, as follows:

Our management also determined that the above material weaknesses had not been remediated as of December 31, 2020 and as a result, we did not maintain effective internal control over financial reporting as of December 31, 2020.

We are working to remediate these material weaknesses through the development and implementation of processes and controls, as well as hiring additional personnel in our finance and accounting group. Specifically, we have:

34

While we have made progress to enhance our internal controls over financial reporting, we are still in the process of implementing, documenting, and testing these processes, procedures, and controls. Additional time is required to complete implementation and to assess and evaluate the sufficiency of these procedures and related actions. We will continue to devote significant time and attention to these remediation efforts. However, these material weaknesses cannot be considered remediated until the applicable controls operate for a sufficient period of time and management has concluded, through testing, that these controls are operating effectively.

We cannot assure you that the measures we have taken to date will be sufficient to remediate the material weaknesses we identified or prevent additional material weaknesses in the future. Although we plan to complete this remediation, if the steps we take do not remediate the material weakness in a timely or sufficient manner, there could continue to be a reasonable possibility that these control deficiencies or others could result in a material misstatement of our annual or interim financial statements that would not be prevented or detected on a timely basis.

Our independent registered public accounting firm is not required to formally attest to the effectiveness of our internal controls over financial reporting until after we are no longer an “emerging growth company” as defined in the JOBS Act. At such time, our independent registered public accounting firm may issue a report that is adverse in the event it is not satisfied with the level at which our internal controls over financial reporting is documented, designed, or operating. Any failure to maintain effective disclosure controls and internal controls over financial reporting could materially and adversely affect our business, results of operations, and financial condition and could cause a decline in the trading price of our Class A common stock.

If we fail to maintain an effective system of disclosure controls and internal control over financial reporting, we may be unable to produce timely and accurate financial statements or comply with applicable regulations, which could negatively impact the price of our Class A common stock.

As a public company, we will be subject to the reporting requirements of the Securities Exchange Act of 1934, as amended (the Exchange Act), the Sarbanes-Oxley Act, and the rules and regulations of the NASDAQ Global Market. We expect that the requirements of these rules and regulations will continue to increase our legal, accounting, and financial compliance costs, make some activities more difficult, time-consuming, and costly, and place significant strain on our personnel, systems, and resources.

The Sarbanes-Oxley Act requires, among other things, that we maintain effective disclosure controls and procedures and internal controls over financial reporting. We are continuing to develop and refine our disclosure controls and other procedures and internal controls over financial reporting and expect that we will need to continue to expend significant resources, including accounting-related costs, and significant management oversight, to meet such requirements. However, our current controls and any new controls that we develop may not be adequate, and weaknesses in our disclosure controls may be discovered in the future. Additionally, we have identified material weaknesses in our internal controls over financial reporting, and additional such weaknesses may be discovered in the future. See “—We have identified material weaknesses in our internal controls over financial reporting, and the failure to achieve and maintain effective internal controls over financial

35

reporting could harm our business and negatively impact the value of our Class A common stock.” Any failure to develop or maintain effective controls or any difficulties encountered in their implementation or improvement could harm our results of operations or cause us to fail to meet our reporting obligations and may result in a restatement of our financial statements for prior periods. Any failure to implement and maintain effective internal controls over financial reporting also could adversely affect the results of periodic management evaluations and annual independent registered public accounting firm attestation reports regarding the effectiveness of our internal controls over financial reporting that we will eventually be required to include in our periodic reports that will be filed with the SEC. Ineffective disclosure controls and procedures and internal controls over financial reporting could also cause investors to lose confidence in our reported financial and other information, which would likely have a negative effect on the trading price of our Class A common stock.

Because we recognize revenue from our subscription services over the term of the subscription, downturns or upturns in new business may not be immediately reflected in our operating results.

We generally recognize revenue from customers of our subscription agreements related to data backup services ratably over the terms of their subscription agreements, a majority of which are one or two-year agreements. Accordingly, the corresponding revenue we report in each quarter from such arrangements is the result of subscription agreements entered into during previous quarters. Consequently, a decline in new or renewed subscriptions in any one quarter may only be partially reflected in our revenue results for that quarter. However, any such decline will negatively affect our revenue in future quarters. Accordingly, the effect of significant downturns in sales and market acceptance of our cloud services, and potential changes in our retention rate may not be fully reflected in our operating results until future periods. This subscription model also makes it difficult for us to rapidly increase our revenue through additional subscription sales in any period, as revenue from new customers must be recognized over the applicable subscription term.

Our operating results may be harmed if we are required to collect sales or other related taxes for our cloud services in jurisdictions where we have not historically done so.

We collect sales and value-added tax in connection with our cloud services in a number of jurisdictions. One or more states or countries may seek to impose incremental or new sales, use, or other tax collection obligations on us, including for past sales by us or our resellers and other partners. Online sellers can be required to collect sales and use tax despite not having a physical presence in the buyer’s state. A successful assertion by a state, country, or other jurisdiction that we should have been or should be collecting additional sales, use, or other taxes on our cloud services could, among other things, result in substantial tax liabilities for past sales, create significant administrative burdens for us, discourage users from purchasing our platform, or otherwise harm our business, results of operations, and financial condition.

Our ability to use our net operating loss carryforwards and certain other tax attributes may be limited.

As of December 31, 2020 we had net operating loss carryforwards for U.S. federal income tax purposes of $45.1 million available to offset future U.S. federal taxable income. Also, as of December 31, 2020, we had net operating loss carryforwards for state income tax purposes of $8.5 million available to offset future state taxable income. If not utilized, both the federal and state tax credit carryforwards will begin to expire in 2034.

Utilization of our net operating loss carryforwards and other tax attributes, such as research and development tax credits, may be subject to annual limitations, or could be subject to other limitations on utilization or benefit due to the ownership change limitations provided by Sections 382 and 383 of the Internal Revenue Code of 1986, as amended (the Code), and other similar provisions. Under Sections 382 and 383 of the Code, if a corporation undergoes an “ownership change,” our ability to use pre-change net operating loss carryforwards and other pre-change attributes, such as research tax credits, to offset post-change income may be limited. Similar rules may apply under state tax laws. At this time, we have not completed a study to assess whether such an ownership change has occurred, or whether there have been multiple ownership changes since

36

our formation. We may experience ownership changes in the future as a result of subsequent changes in our stock ownership, some of which may be outside our control. Accordingly, our ability to utilize the aforementioned carryforwards may be limited.

Further, legislation enacted in 2017, informally titled the Tax Cuts and Jobs Act (Tax Act), as modified by the Coronavirus Aid, Relief, and Economic Security Act (CARES Act) changed the federal rules governing net operating loss carryforwards. For net operating loss carryforwards arising in tax years beginning after December 31, 2017, the Tax Act limits a taxpayer’s ability to utilize such carryforwards to 80% of taxable income. In addition, net operating loss carryforwards arising in tax years ending after December 31, 2017 can be carried forward indefinitely, but carryback is generally prohibited. Net operating loss carryforwards generated before January 1, 2018 (which represent the substantial majority of our net operating losses) will not be subject to the Tax Act’s taxable income limitation and will continue to have a twenty-year carryforward period. Nevertheless, our net operating loss carryforwards and other tax assets could expire before utilization and could be subject to limitations, which could harm our business, revenue, and financial results.

If our estimates or judgments relating to our critical accounting policies prove to be incorrect, our results of operations could be adversely affected.

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the amounts reported in our financial statements and accompanying notes appearing elsewhere in this prospectus. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances, as provided in the section titled “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Critical Accounting Policies and Estimates.” The results of these estimates form the basis for making judgments about the carrying values of assets, liabilities, and equity, and the amount of revenue and expenses that are not readily apparent from other sources. Significant estimates and judgments involve those related to costs to be capitalized as internal-use software and their useful life; the useful lives of other long-lived assets; impairment considerations for long-lived assets; expected lease term for capital leases; calculation of the sales reserve; valuation of our common stock and stock options and accounting for taxes; including estimates for sales tax and value-added tax liability; deferred tax assets; valuation allowance; and uncertain tax positions among others. Our results of operations may be adversely affected if our assumptions change or if actual circumstances differ from those in our assumptions.

Risks Related to Intellectual Property

Assertions by a third party that our cloud services infringe, misappropriate, or otherwise violate their intellectual property could subject us to costly and time-consuming litigation and adversely impact our business.

There is frequent litigation in the software and technology industries based on allegations of infringement, misappropriation, or other violations of intellectual property rights. Some software and technology companies, including some of our competitors, as well as non-practicing entities, own patents and other intellectual property rights that they may use to assert claims against us. In our case, third parties have asserted, and may in the future assert, that we have infringed, misappropriated, or otherwise violated their patents or other intellectual property rights. For example, we have faced infringement claims from other non-practicing entities in the past. There may be intellectual property rights held by others, including issued or pending patents, that cover significant aspects of our technologies or solutions, and we cannot assure you that we are not infringing, misappropriating, or violating, and have not infringed, misappropriated, or violated, any third-party intellectual property rights or that we will not be held to have done so or be accused of doing so in the future. In addition, as we face increasing competition and become increasingly visible as a publicly-traded company, or if we become more successful, the possibility of new third-party claims may increase.

37

Any claim that we have violated intellectual property or other proprietary rights of third parties, with or without merit, could be time-consuming and costly to address and resolve, could divert the time and attention of management and technical personnel from our business, could place limitations on our ability to use our current websites and technologies, and could result in an inability to market or provide all or a portion of our cloud services. Furthermore, we could be required to pay substantial monetary damages, including treble damages and attorneys’ fees if we are found to have willfully infringed a party’s intellectual property rights. We may also be required to enter into a royalty or licensing agreement that could include significant upfront and future licensing fees or expend significant resources to redesign our technologies or solutions, which efforts may not be timely or prove successful at all and require us to indemnify customers or other third parties. Royalty or licensing agreements may be unavailable on terms acceptable to us, or at all. If we cannot develop or license technology for any allegedly infringing aspect of our business, we could be forced to limit our cloud services and may be unable to compete effectively. Any of these events could have a material adverse effect on our business.

If we are unable to adequately establish, maintain, protect, and enforce our intellectual property and proprietary rights, our reputation may be harmed, we may be subject to litigation, and our business may be adversely affected.

Our future success and competitive position depend in large part on our ability to establish, maintain, protect, and enforce our intellectual property and proprietary rights. We do not own any issued patents and rely on a combination of trademark, copyright, and trade secret laws, as well as confidentiality procedures and contractual restrictions, to establish and protect our proprietary rights, all of which provide only limited protection and may not now or in the future provide us with a competitive advantage. The steps we have taken and will take may not prevent unauthorized use, reverse engineering, or misappropriation of our technologies and we may be unable to detect any of the foregoing. Furthermore, effective trademark, copyright, and trade secret protection may not be available in every country in which our cloud services are available. Our lack of patent protection may restrict our ability to protect our technologies and processes from competition. Defending and enforcing our intellectual property rights may result in litigation, which can be costly and divert management attention and resources. If our efforts to protect our technologies and intellectual property are inadequate, the value of our brand and other intangible assets may be diminished and competitors may be able to mimic our cloud services. Any of these events could have a material adverse effect on our business.

With respect to our technology platform, we consider trade secrets and know-how to be one of our primary sources of intellectual property. However, trade secrets and know-how can be difficult to protect. We seek to protect these trade secrets and other proprietary technology, in part, by entering into non-disclosure and confidentiality agreements with parties who have access to them, such as our employees, outside contractors, consultants, advisors, and other third parties. We also enter into confidentiality and invention assignment agreements with our employees and consultants. The confidentiality agreements are designed to protect our proprietary information and, in the case of agreements or clauses containing invention assignment, to grant us ownership of technologies that are developed through a relationship with employees or third parties. We cannot guarantee that we have entered into such agreements with each party that may have or has had access to our trade secrets or proprietary information, including our technology and processes. Despite these efforts, no assurance can be given that the confidentiality agreements we enter into will be effective in controlling access to such proprietary information and trade secrets. The confidentiality agreements on which we rely to protect certain technologies may be breached, may not be adequate to protect our confidential information, trade secrets, and proprietary technologies and may not provide an adequate remedy in the event of unauthorized use or disclosure of our confidential information, trade secrets or proprietary technology. Further, these agreements do not prevent our competitors or others from independently developing the same or similar technologies and processes, which may allow them to provide a service similar or superior to ours, which could harm our competitive position.

38

Our use of “open-source” software could negatively affect our ability to sell our cloud services and subject us to possible litigation.

A portion of the technologies used by us incorporates “open-source” software, and we may incorporate open-source software in the future. Such open-source software is generally licensed by its authors or other third parties under open-source licenses. Companies that incorporate open-source software into their solutions have, from time to time, faced claims challenging the use of open-source software and compliance with open-source license terms. These licenses may subject us to certain unfavorable conditions, including requirements that we offer all or parts of our technology or services that incorporate the open-source software at no cost, that we make publicly available source code for modifications or derivative works we create based upon, incorporating, or using the open-source software, and/or that we license such modifications or derivative works under the terms of the particular open-source licensor other license granting third parties certain rights of further use. Although we monitor our use of open-source software, we cannot assure you that all open-source software is reviewed prior to use in our cloud services, that our developers have not incorporated open-source software into our technology platform or services, or that they will not do so in the future. In the event that we become subject to such claims, we could be subject to significant damages, enjoined from the sale of our solutions that contained the open-source software, and required to comply with onerous conditions. In addition, the terms of open-source software licenses may require us to provide software that we develop using such open-source software to others on unfavorable license terms. As a result of our current or future use of open-source software, we may face claims or litigation, be required to release our proprietary source code, pay damages for breach of contract, re-engineer our solutions, discontinue making our solutions available in the event re-engineering cannot be accomplished on a timely basis or take other remedial action. Any such re-engineering or other remediation efforts could require significant additional research and development resources, and we may not be able to successfully complete any such re-engineering or other remediation efforts on a timely basis, or at all. Any of these risks could be difficult to eliminate or manage, and, if not addressed, could disrupt the distribution and sale of our solutions and have a material adverse effect on our business and operating results.

Risks Related to Ownership of Our Class A Common Stock and This Offering

We may invest or spend the proceeds of this offering in ways with which investors may not agree or in ways which may not yield a return.

Our management will have considerable discretion in the application of the net proceeds, and you will not have the opportunity, as part of your investment decision, to assess whether the proceeds are being used appropriately. Our net proceeds from the sale of shares of our Class A common stock in this offering will be used for general corporate purposes, including working capital, operating expenses, and capital expenditures and to fund new growth initiatives. In addition, although we do not have any agreements or commitments for any specific material acquisitions at this time, we may use a portion of the net proceeds to acquire businesses, products, services, or technologies. Also, prior to a private financing round consisting of $10.0 million of convertible notes (which we also refer to as a Simple Agreement for Future Equity agreement (SAFE)) in August 2021, we had raised less than $3.0 million of outside equity investment since our founding in 2007. As a result, we do not have an established track record for the use of significant proceeds from the sale of shares of our stock. We may spend the proceeds in ways that may not yield a significant return or provide the anticipated benefits in a timely manner, or at all. In addition, until the net proceeds are used, they may be placed in investments that do not produce significant income or that may lose value.

The dual class structure of our common stock has the effect of concentrating voting control with those stockholders who held our capital stock prior to the completion of this offering, including our executive officers, employees, and directors and their affiliates, which will limit your ability to influence the outcome of important transactions, including a change in control.

Our Class B common stock has 10 votes per share, and our Class A common stock, which is the stock we are offering in this offering, has one vote per share. Upon the completion of this offering, stockholders who

39

hold shares of our Class B common stock, including our executive officers, employees, and directors and their affiliates, will collectively hold approximately 97% of the voting power of our outstanding capital stock. Because of the ten-to-one voting ratio between our Class B common stock and Class A common stock, after the completion of this offering, the holders of our Class B common stock will collectively continue to control a majority of the combined voting power of our capital stock and therefore be able to control all matters submitted to our stockholders for approval so long as the shares of our Class B common stock represent at least 10% of all outstanding shares of our Class A common stock and Class B common stock. These holders of our Class B common stock may also have interests that differ from yours and may vote in a way with which you disagree and which may be adverse to your interests. This concentrated control may have the effect of delaying, preventing, or deterring a change in control of our company, could deprive our stockholders of an opportunity to receive a premium for their capital stock as part of a sale of our company and might ultimately affect the market price of our Class A common stock.

Future transfers by holders of our Class B common stock will generally result in those shares converting into shares of our Class A common stock, subject to limited exceptions, such as certain transfers effected for estate planning or charitable purposes. The conversion of shares of our Class B common stock into shares of our Class A common stock will have the effect, over time, of increasing the relative voting power of those holders of Class B common stock who retain their shares in the long term. If, for example, any of our founders or other large existing stockholders that hold significant shares of Class B common stock retain a significant portion of their holdings of our Class B common stock for an extended period of time, they could control a significant portion of the voting power of our capital stock for the foreseeable future. For a description of the dual class structure, see the section titled “Description of Capital Stock.”

We cannot predict the impact our dual class structure may have on the market price of our Class A common stock.

We cannot predict whether our dual class structure, combined with the concentrated control of our stockholders who held our capital stock prior to the completion of our offering, including our executive officers, employees, and directors and their affiliates, will result in a lower or more volatile market price of our Class A common stock or in adverse publicity or other adverse consequences. For example, certain index providers have announced restrictions on including companies with multiple class share structures in certain of their indices. In July 2017, FTSE Russell and Standard & Poor’s announced that they would cease to allow most newly public companies utilizing dual or multi-class capital structures to be included in their indices. Under the announced policies, our dual class capital structure would make us ineligible for inclusion in any of these indices. Given the sustained flow of investment funds into passive strategies that seek to track certain indexes, exclusion from stock indexes would likely preclude investment by many of these funds and could make our Class A common stock less attractive to other investors. As a result, the market price of our Class A common stock could be adversely affected.

Anti-takeover provisions contained in our Amended and Restated Certificate of Incorporation and Amended and Restated Bylaws, as well as provisions of Delaware law, could impair a takeover attempt.

Our Amended and Restated Certificate of Incorporation, Amended and Restated Bylaws, and Delaware law contain or will contain provisions which could have the effect of rendering more difficult, delaying, or preventing an acquisition deemed undesirable by our Board of Directors. Among other things, our Amended and Restated Certificate of Incorporation and Amended and Restated Bylaws will include provisions:

40

These provisions, alone or together, could delay or prevent hostile takeovers and changes in control or changes in our management.

As a Delaware corporation, we are also subject to provisions of Delaware law, including Section 203 of the Delaware General Corporation law, which prevents certain stockholders holding more than 15% of our outstanding capital stock from engaging in certain business combinations without approval of the holders of at least two-thirds of our outstanding common stock not held by such stockholder. Any provision of our Amended and Restated Certificate of Incorporation, Amended and Restated Bylaws, or Delaware law that has the effect of delaying, preventing, or deterring a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our capital stock, and could also affect the price that some investors are willing to pay for our Class A common stock.

An active trading market for our Class A common stock may never develop or be sustained.

Even if we successfully complete our initial public offering, we cannot assure you that an active trading market for our Class A common stock will develop, or if developed, that any market will be sustained. Accordingly, we cannot assure you of the liquidity of any trading market, your ability to sell your shares of our Class A common stock when desired or the prices that you may obtain for your shares of our Class A common stock.

The market price of our Class A common stock may be volatile, and you could lose all or part of your investment.

Prior to the completion of this offering, there has been no public market for shares of our Class A common stock. The initial public offering price of our Class A common stock will be determined through negotiation between us and the underwriters. This price will not necessarily reflect the price at which investors in the market will be willing to buy and sell shares of our Class A common stock following this offering. In addition, the market price of our Class A common stock following this offering is likely to be highly volatile, may be higher or lower than the initial public offering price of our Class A common stock, and could be subject to wide fluctuations in response to various factors, some of which are beyond our control and may not be related to our operating performance.

Fluctuations in the price of our Class A common stock could cause you to lose all or part of your investment because you may be unable to sell your shares at or above the price you paid in this offering. Factors that could cause fluctuations in the market price of our Class A common stock include the following:

41

In addition, in the past, following periods of volatility in the overall market and the market price of a particular company’s securities, securities class action litigation has often been instituted against these companies. This litigation, if instituted against us, could result in substantial costs and a diversion of our management’s attention and resources.

The large number of shares of our capital stock eligible for public sale or subject to rights requiring us to register them for public sale could depress the market price of our Class A common stock.

The market price of our Class A common stock could decline as a result of sales of a large number of shares of our Class A common stock in the market after this offering, and the perception that these sales could occur may also depress the market price of our Class A common stock. Based on shares of our capital stock outstanding as of June 30, 2021, we will have 29,273,264 shares of our capital stock outstanding after this offering. Our executive officers, directors and the holders of substantially all of our capital stock and securities convertible into or exchangeable for our capital stock have entered into market standoff agreements with us or

42

will enter into lock-up agreements with the underwriters under which they have agreed or will agree, subject to specific exceptions, not to sell any of our capital stock for 180 days following the date of this prospectus, other than in the case of shares of Class A common stock to be issued upon the automatic conversion of our convertible notes (which we also refer to as a Simple Agreement for Future Equity agreement (SAFE)), without first obtaining the written consent of Oppenheimer & Co. Inc., subject to certain exceptions as set forth in “Underwriting”. As a result of these agreements, the provisions of our investors’ rights agreement described further in the section titled “Description of Capital Stock—Registration Rights” and the provisions of Rule 144 or Rule 701 under the Securities Act of 1933, as amended (the Securities Act), shares of our capital stock will be available for sale in the public market as follows:

Following the expiration of the lock-up agreements referred to above, stockholders owning an aggregate of up to 4,066,595 shares of our Class B common stock can require us to register shares of our capital stock owned by them for public sale in the United States. In addition, we intend to file a registration statement to register approximately 20,865,000 shares of our capital stock reserved for future issuance under our equity compensation plans. Upon effectiveness of that registration statement, subject to the satisfaction of applicable exercise periods and expiration of the market standoff agreements and lock-up agreements referred to above, the shares of our capital stock issued upon exercise of outstanding options to purchase shares of our Class B common stock will be available for immediate resale in the United States in the open market.

Sales of our Class A common stock as restrictions end or pursuant to registration rights may make it more difficult for us to sell equity securities in the future at a time and at a price that we deem appropriate. These sales also could cause the market price of our Class A common stock to fall and make it more difficult for you to sell shares of our Class A common stock.

Purchasers in this offering will experience immediate and substantial dilution in the book value of their investment.

The assumed initial public offering price of $16.00 per share, which is the midpoint of the estimated offering price range set forth on the cover page of this prospectus, is substantially higher than the pro forma net tangible book value per share of our outstanding capital stock upon the completion of this offering. Therefore, if you purchase shares of our Class A common stock in this offering, you will incur immediate dilution of $13.11 in the net tangible book value per share from the price you paid. In addition, investors purchasing shares of our Class A common stock from us in this offering will have contributed approximately 88% of the total consideration paid to us by all stockholders who purchased shares of our common stock, in exchange for acquiring approximately 21% of the outstanding shares of our common stock as of June 30, 2021, after giving effect to this offering. The exercise of outstanding options to purchase shares of our Class B common stock will result in further dilution.

43

If securities or industry analysts do not publish or cease publishing research or reports about us, our business, our market, or our competitors, or if they adversely change their recommendations regarding our Class A common stock, the market price of our Class A common stock and trading volume could decline.

The trading market for our Class A common stock will be influenced by the research and reports that securities or industry analysts may publish about us, our business, our market, or our competitors. If any of the analysts who may cover us adversely change their recommendations regarding our Class A common stock or provide more favorable recommendations about our competitors, the market price of our Class A common stock would likely decline. If any of the analysts who may cover us were to cease coverage of our company or fail to regularly publish reports on us, we could lose visibility in the financial markets, which in turn could cause the market price of our Class A common stock or trading volume to decline.

We do not expect to declare any dividends in the foreseeable future.

We do not anticipate declaring any cash dividends to holders of our Class A common stock in the foreseeable future. Consequently, investors may need to rely on sales of our Class A common stock after price appreciation, which may never occur, as the only way to realize any future gains on their investment. Investors seeking cash dividends should not purchase shares of our Class A common stock.

Our Amended and Restated Certificate of Incorporation will provide that the Court of Chancery of the State of Delaware and the federal district courts of the United States of America will be the exclusive forums for substantially all disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers, or employees.

Our Amended and Restated Certificate of Incorporation will provide that the Court of Chancery of the State of Delaware and the federal district courts of the United States of America will be the exclusive forum for substantially all disputes between us and our stockholders, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers, or employees. Specifically, our Amended and Restated Certificate of Incorporation will provide that the Court of Chancery of the State of Delaware is the exclusive forum provision for: (i) any derivative action or proceeding brought on behalf of us; (ii) any action asserting a claim of breach of a fiduciary duty; (iii) any action arising pursuant to any provision of the DGCL, our Amended and Restated Certificate of Incorporation or Amended and Restated Bylaws (as either may be amended from time to time); (iv) any action to interpret, apply, enforce, or determine the validity of our Amended and Restated Certificate of Incorporation or our Amended and Restated Bylaws; (v) any action asserting a claim against us that is governed by the internal affairs doctrine; or (vi) any action asserting an “internal corporate claim” as defined in the DGCL.

These exclusive forum provisions would not apply to suits brought to enforce a duty or liability created by the Exchange Act.

Furthermore, Section 22 of the Securities Act creates concurrent jurisdiction for federal and state courts over all such Securities Act actions. Accordingly, both state and federal courts have jurisdiction to entertain such claims. To prevent having to litigate claims in multiple jurisdictions and the threat of inconsistent or contrary rulings by different courts, among other considerations, our Amended and Restated Certificate of Incorporation will further provide that the U.S. federal district courts will be the exclusive forum for resolving any complaint asserting a cause of action arising under the Securities Act. While the Delaware courts have determined that such choice of forum provisions are facially valid, a stockholder may nevertheless seek to bring a claim in a venue other than those designated in the exclusive forum provisions. In such instance, we would expect to vigorously assert the validity and enforceability of the exclusive forum provisions of our Amended and Restated Certificate of Incorporation. This may require significant additional costs associated with resolving such action in other jurisdictions and there can be no assurance that the provisions will be enforced by a court in those other jurisdictions.

44

These exclusive-forum provisions may limit a stockholder’s ability to bring a claim in a judicial forum that it finds favorable for disputes with us or our directors, officers, or other employees. If a court were to find any of the exclusive forum provisions of our Amended and Restated Certificate of Incorporation to be inapplicable to or unenforceable in an action, we may incur further significant additional costs associated with resolving the dispute in other jurisdictions, all of which could seriously harm our business.

Operating as a public company will require us to incur substantial costs and will require substantial management attention.

As a public company, we will incur substantial legal, accounting, and other expenses that we did not incur as a private company. For example, we are subject to the reporting requirements of the Exchange Act, the applicable requirements of the Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act, the rules and regulations of the SEC, and the listing standards of the NASDAQ Global Market. For example, the Exchange Act requires, among other things, we file annual, quarterly, and current reports with respect to our business, financial condition, and results of operations. Compliance with these rules and regulations will increase our legal and financial compliance costs, and increase demand on our systems, particularly after we are no longer an emerging growth company. In addition, as a public company, we may be subject to stockholder activism, which can lead to additional substantial costs, distract management, and impact the manner in which we operate our business in ways we cannot currently anticipate. As a result of disclosure of information in this prospectus and in filings required of a public company, our business and financial condition will become more visible, which may result in threatened or actual litigation, including by competitors.

Some members of our management team also have limited experience managing a publicly traded company, interacting with public company investors, and complying with the increasingly complex laws pertaining to public companies. Our management team may not successfully or efficiently manage our transition to being a public company subject to significant regulatory oversight and reporting obligations under the federal securities laws and the continuous scrutiny of securities analysts and investors. These new obligations and constituents will require significant attention from our senior management and could divert their attention away from the day-to-day management of our business, which could adversely affect our business, financial condition, and results of operations.

45

A Letter from the Founders

To Our Customers and Future Stockholders,

Backblaze was incorporated in 2007 by five founders who are all still with the company today, but its origins go back much farther than that. Our journey started when the same five individuals—Gleb, Brian, and Casey, joined shortly thereafter by Tim and Billy—launched our first startup in 1999, where we developed a philosophy around building easy-to-use products.

Our collaboration continued through our second startup as we further refined our principles to be customer focused, fair, and transparent. Then, as a result of a phone call from a friend who had lost some data (one in a long line of similarly frantic calls) with no backup because “no one has the time for that,” Brian gathered the same five people together a third time in 2007 to form Backblaze—with the intention of making storing, using, and protecting data so astonishingly easy that Brian wouldn’t have to field frantic phone calls like that ever again.

After building two successful businesses together, we embarked on this next part of our journey as a seasoned team with clear vision and purpose for this startup: We wanted to focus on customers. We wanted to create a great product. We wanted to offer that product at a fair price. We wanted customers to not only be glad to do business with us, but also trust us enough to enthusiastically recommend our products and cloud services to others.

Bootstrapped and Focused on Customers

To achieve this, we decided to create Backblaze differently, and with essentially no venture capital funding. As a result, the business has grown with an almost entirely bootstrapped approach—prior to 2021, we had raised less than $3 million in outside equity since our founding in 2007. This has helped us to focus exclusively on building an efficient culture and serving our customers.

The real source of Backblaze’s financial success and growth has been, and will continue to be, our customers. Building storage cloud products for our customers and keeping their most valuable data safe is what drives our entire culture.

Trust and Transparency

In 2007 Brian crafted a “Backblaze Statement of Core Values,” which outlined several of our founding principles. Here is the first:

Core Value #1—Be Fair and Customer Oriented

At Backblaze, we want to provide a quality product for a fair price. We want to be honest and up front with our customers as to what we can and cannot do and we want to be paid only the money honestly owed to us, and never engage in sleazy or misleading business practices where customers are misled in any way or pay for a service they do not receive. We are the “good guys”, and we act like it.

and our founding principles continue...

Backblaze strives to be open and transparent to customers, and open and transparent to all partners, employees, and investors. Any information you are ashamed to share with any one of the groups on this list is a warning sign that you might be doing something wrong.

These values sit at the very core of our culture. Transparency is more than a value for us, it’s our default approach. We release quarterly hard drive reports detailing the performance of each serial number and brand of

46

the nearly 200,000 drives in our datacenter. We shared exactly how we store customer data redundantly, and how we do it inexpensively. We shared the source code algorithms used to encode and replicate our customer data to keep it safe. When we face problems, like we did during a 2010 power outage at a datacenter, we openly share what went wrong and how we will do better in the future. When there are problems with our software, we share what went wrong and the steps being taken to fix it, like in 2016 when a bug in a different company’s software caused problems with the Backblaze client if both pieces of software ran on the same customer laptop.

This openness has been met with customer appreciation and loyalty, which encourages us to stay true to these core Backblaze values.

Our Team, Our Culture

Early on, we grew our team by hiring co-workers from previous companies who we trusted with what we consider to be our lives and livelihood—our customers’ data. The first two after the five original founders deserve special mention as demi-founders: Damon Uyeda and Nilay Patel. Most of us went entirely without salary for more than a year in order to spend all of Backblaze’s resources building products our customers would love. In the spirit of that original bond, we formed a salary tontine where, until the public offering is finalized, a core group of the original founders and some other very early employees agreed to make the same salary. This solidarity helped us build and sustain our culture through the first 14 years of our evolution.

Our founding team is a diverse group of open-minded people born in four different countries, practicing at least five different religions, bound together by mutual respect and the common belief in making excellent products. We embrace what each individual brings to the business; diversity is one of our strengths. Leveraging this strength means discussing our differences in an open dialog—Backblaze is not afraid of diverging opinions. The free exchange of ideas is a strength, not a weakness.

Of the first 100 employees, more than half worked with us at previous companies, which speaks to our reputation, as do our Glassdoor ratings—4.9/5.0 stars, 100% CEO Approval, and 100% Recommend to a Friend as of December 31, 2020.

Backblaze welcomed its 228^th employee as of June 30, 2021. One of the things we are the most proud of as founders is the team of exceptionally talented people who have chosen to work at Backblaze. They are highly sought-after individuals with extraordinary reputations who could have chosen to work at any tech company. To attract and retain such a team, we provide a warm, friendly office environment where families and well-behaved dogs are welcome.

Becoming a Public Company

Becoming publicly traded is a natural step for any company that wishes to stay independent, rather than being absorbed by a firm that may not share our core values. For us, the only question was when to take that step.

There were several factors that led us to make the transition now. First and foremost, we feel that there is a market opportunity to grow our customer base, and we are raising capital to pursue that opportunity. We do not plan to change our customer focus, nor our dedication to staying efficient. These additional funds are intended to expand on that focus, not to spend irresponsibly.

Second, Backblaze is employee owned. We grant stock options to every employee so that all employees share in our success. After 14 years of operation, it is time to give our most loyal, long-term team members some liquidity. We owe them that, and more.

Third, we want to invite our customers, community, and advocates as well as investors to become part owners in the next stage of our adventure. We feel that they have always been a part of our family, and we welcome them to take part in our continued success and growth.

47

Finally, an IPO is a branding event—a coming of age party. It marks the end of the startup period and the beginning of an era where we are a trusted, mature company without the “startup” qualifier.

As Backblaze becomes a public company, we plan to maintain our core values, our focus on sustainable growth, and our commitment to our customers. We are building on that foundation by welcoming an independent board and raising IPO funds to continue investing in and accelerating Backblaze’s growth.

Thank you and Next Steps

It has indeed been an incredible journey building Backblaze into what it is today. We are grateful to our customers for their business and trust, and we plan to continue earning that trust every day. We are thankful to our team members for their dedication to Backblaze and our values. And we are thankful for our friends, family members, and everybody else who helped and encouraged us along the way. We could not possibly have made it this far without you.

Data has become the digital world’s most precious resource. We have spent the last 14 years making it astonishingly easy to store, use, and protect that data. And we’re just getting started. As data continues to grow in volume and importance, we believe Backblaze will be a foundational element of the overall technology stack.

We invite you to join us in this next step in our evolution, the next part of our adventure—building Backblaze as a public company.

Gleb Budman, CEO & Chairperson

Brian Wilson, CTO & Director

Timothy Nufire, CCO & Director

Charles (Casey) Jones, VP Design

Kwok Hang (Billy) Ng, Web Architect

48

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus contains forward-looking statements. All statements other than statements of historical facts contained in this prospectus, including statements regarding our future results of operations and financial position, business strategy, as well as plans and objectives of management for future operations, are forward-looking statements. These statements involve known and unknown risks, uncertainties, and other important factors that are in some cases beyond our control and may cause our actual results, performance, or achievements to be materially different from any future results, performance, or achievements expressed or implied by the forward-looking statements.

The words “may,” “will,” “should,” “would,” “expect,” “plan,” “anticipate,” “could,” “intend,” “target,” “project,” “contemplate,” “believe,” “estimate,” “predict,” “potential,” or “continue,” or the negative of these terms or other similar expressions are intended to identify forward-looking statements. Forward-looking statements contained in this prospectus include, but are not limited to, statements about:

These forward-looking statements are subject to a number of risks, uncertainties, and assumptions, including those described in the section titled “Risk Factors” elsewhere in this prospectus. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained

49

in any forward-looking statements we may make. In light of these risks, uncertainties, and assumptions, the forward-looking events and circumstances discussed in this prospectus may not occur and actual results could differ materially and adversely from those anticipated or implied in the forward-looking statements.

You should not rely upon forward-looking statements as predictions of future events. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee that the future results, advancements, discoveries, levels of activity, performance, or events and circumstances reflected in the forward-looking statements will be achieved or occur. Moreover, except as required by law, neither we nor any other person assumes responsibility for the accuracy and completeness of the forward-looking statements. We undertake no obligation to update publicly any forward-looking statements for any reason after the date of this prospectus to conform these statements to actual results or to changes in our expectations.

You should read this prospectus and the documents that we reference in this prospectus and have filed with the Securities and Exchange Commission as exhibits to the registration statement of which this prospectus is a part with the understanding that our actual future results, levels of activity, performance, and events and circumstances may be materially different from what we expect.

50

MARKET, INDUSTRY, AND OTHER DATA

This prospectus contains estimates, projections, and other information concerning our industry, our business, and our target markets. We obtained the industry, market, and similar data set forth in this prospectus from our internal estimates and research. Information based on estimates, forecasts, projections, market research, or similar methodologies is inherently subject to uncertainties and actual events or circumstances may differ materially from events and circumstances that are assumed in this information. Unless otherwise expressly stated, we obtained this industry, business, market, and other data from reports, research surveys, studies, and similar data prepared by third parties, industry, general publications, and similar sources.

Certain information in this prospectus is contained in independent industry publications. The source of these independent industry publications is provided below:

51

USE OF PROCEEDS

We estimate that the net proceeds from this offering will be approximately $89.5 million, or $103.4 million if the underwriters exercise their option to purchase additional shares in full, after deducting estimated underwriting discounts and commissions and estimated offering expenses payable by us, assuming an initial public offering price of $16.00 per share, which is the midpoint of the estimated price range set forth on the cover page of this prospectus.

Each $1.00 increase (decrease) in the assumed initial public offering price of $16.00 per share, the midpoint of the estimated price range set forth on the cover page of this prospectus, would increase (decrease) the net proceeds to us from this offering by $5.8 million, assuming the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting estimated underwriting discounts and commissions. An increase (decrease) of 1,000,000 shares in the number of shares offered by us, as set forth on the cover page of this prospectus, would increase (decrease) our net proceeds from this offering by $14.9 million, assuming no change in the assumed initial public offering price per share and after deducting estimated underwriting discounts and commissions.

The principal purposes of this offering are to increase our capitalization and financial flexibility and create a public market for our Class A common stock, obtain additional working capital, and facilitate our future access to the public equity markets to allow us to implement our business plan. We currently intend to use the net proceeds received by us from this offering for general corporate purposes, including working capital, operating expenses, sales and marketing expenses to fund the growth of our business, research and development, and capital expenditures. In addition, we may use a portion of the net proceeds to acquire complementary businesses, products, services, or technologies. However, we have no current understandings, agreements, or commitments for any specific material acquisitions at this time. We cannot specify with certainty the particular uses of the net proceeds that we received from this offering. Accordingly, we will have broad discretion in using these proceeds.

Pending our use of the net proceeds from this offering, we plan to invest the net proceeds in a variety of capital preservation investments, including short-term interest-bearing investment-grade securities, certificates of deposit, or government securities.

52

DIVIDEND POLICY

We have never declared or paid any cash dividends on our capital stock and we do not currently intend to pay any cash dividends on our capital stock for the foreseeable future. We currently intend to retain all available funds and any future earnings to support operations and to finance the growth and development of our business. Any future determination to pay dividends will be made at the discretion of our Board of Directors subject to applicable laws and will depend upon, among other factors, our results of operations, financial condition, contractual restrictions, and capital requirements. Our future ability to pay cash dividends on our capital stock may also be limited by the terms of any future debt or preferred securities or future credit facility. Our revolving credit agreement with City National Bank contains certain restrictive covenants that prevent us from paying cash dividends on our capital stock.

53

CAPITALIZATION

The following table sets forth our cash and cash equivalents and total capitalization as of June 30, 2021, as follows on:

54

You should read this information in conjunction with our financial statements and the related notes appearing elsewhere in this prospectus, as well as the sections of this prospectus titled “Selected Financial Data” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”

55

The number of shares of our Class A common stock and Class B common stock issued and outstanding, pro forma and pro forma adjusted, in the table above is based on no shares of our Class A common stock and 22,295,893 shares of our Class B common stock (including our convertible preferred stock on an as-converted basis) outstanding as of June 30, 2021, and excludes:

56

DILUTION

If you invest in our Class A common stock in this offering, your ownership interest will be immediately diluted to the extent of the difference between the assumed initial public offering price per share of our Class A common stock and the pro forma as adjusted net tangible book value per share of our Class A common stock immediately after this offering. Although our common stock and preferred stock will convert to Class B, for illustrative purposes within this section, common stock and preferred stock has been shown as converting into Class A.

Historical net tangible book value (deficit) per share represents our total tangible assets less our liabilities and preferred stock that is not included in equity divided by the total number of shares of Class A common stock outstanding, for illustrative purposes. As of June 30, 2021, our historical net tangible book value (deficit) was approximately $(17.4) million, or $(0.92) per share. Our pro forma net tangible book value as of June 30, 2021, was approximately $(14.7) million, or $(0.66) per share, after giving effect to the (i) automatic conversion of all outstanding shares of our convertible preferred stock into an aggregate of 3,359,195 shares of Class A common stock for illustrative purposes and (ii) the reclassification of all outstanding shares of our common stock into an equivalent number of shares of our Class A common stock for illustrative purposes.

After giving effect to (i) the pro forma adjustments set forth above, (ii) our sale in this offering of 6,250,000 shares of Class A common stock at an assumed initial public offering price of $16.00 per share, the midpoint of the estimated price range set forth on the cover page of this prospectus and after deducting estimated underwriting discounts and commissions and (iii) the issuance and automatic conversion of convertible notes (which we also refer to as a Simple Agreement for Future Equity agreement (SAFE)) into 727,371 shares of Class A common stock (based on an assumed initial public offering price of $16.00 per share, which is the midpoint of the estimated price range set forth on the cover page of this prospectus) immediately prior to the completion of this offering, our pro forma as adjusted net tangible book value as of June 30, 2021 would have been approximately $84.8 million, or $2.89 per share of our Class A common stock. This represents an immediate increase in pro forma as adjusted net tangible book value of $3.09 per share to our existing stockholders, which is in addition to a $0.46 increase in pro forma net tangible book value per share attributable to holders of the SAFE, and an immediate dilution of $13.11 per share to investors purchasing Class A common stock in this offering.

The following table illustrates this dilution to new investors on a per share basis:

Each $1.00 increase (decrease) in the assumed initial public offering price of $16.00 per share, the midpoint of the estimated price range set forth on the cover page of this prospectus, would increase (decrease) the pro forma as adjusted net tangible book value, by $0.20 per share and the dilution per share to new investors by $0.80 per share, assuming the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same, after deducting estimated underwriting discounts and commissions. We may also increase (decrease) the number of shares we are offering.

If the underwriters’ option to purchase additional shares in this offering is exercised in full, the pro forma as adjusted net tangible book value would be $3.27 per share, the increase in the pro forma net tangible book value per share for existing stockholders would be $0.37 per share and the dilution to new investors participating in this offering would be $(0.37) per share.

57

We may also increase or decrease the number of shares we are offering. An increase (decrease) of 1,000,000 shares in the number of shares we are offering would increase (decrease) our pro forma as adjusted net tangible book value by approximately $14.9 million, or $0.40 per share, and the pro forma dilution per share to investors in this offering by $(0.40) per share, assuming that the assumed initial public offering price remains the same, and after deducting estimated underwriting discounts and commissions. The pro forma information discussed above is illustrative only and will change based on the actual initial public offering price, number of shares and other terms of this offering determined at pricing.

The following table summarizes as of June 30, 2021, after giving effect to the pro forma adjustments set forth above, the number of shares of our Class A common stock, the total consideration, and the average price per share (i) paid to us by our existing stockholders including our convertible preferred stock, (ii) paid to us by our investors related to the issuance and automatic conversion of convertible notes (which we also refer to as a Simple Agreement for Future Equity agreement (SAFE)) into 727,371 shares of Class A common stock (based on an assumed initial public offering price of $16.00 per share, which is the midpoint of the estimated price range set forth on the cover page of this prospectus) immediately prior to the completion of this offering, in addition to estimated accrued interest on the SAFE notes prior to the completion of this offering, and (iii) to be paid by new investors participating in this offering at an assumed initial public offering price of $16.00 per share, the midpoint of the estimated price range set forth on the cover page of this prospectus, before deducting estimated underwriting discounts and commissions.

In addition, if the underwriters’ option to purchase additional shares is exercised in full, the number of shares held by existing stockholders will be reduced to 74% of the total number of shares of Class A common stock to be outstanding upon completion of this offering, and the number of shares of Class A common stock held by new investors participating in this offering will be further increased to 24% of the total number of shares of Class A common stock to be outstanding upon completion of the offering.

Each $1.00 increase (decrease) in the assumed initial public offering price of $16.00 per share would increase (decrease) total consideration paid by new investors by $6.3 million and increase (decrease) the percent of total consideration paid by new investors by 1%, assuming the number of shares we are offering, as set forth on the cover page of this prospectus, remains the same, after deducting estimated underwriting discounts and commissions. We may also increase or decrease the number of shares we are offering. An increase (decrease) of 1,000,000 in the number of shares offered by us would increase (decrease) total consideration paid by new investors by $16.0 million, assuming that the assumed initial price to the public remains the same, and after deducting the estimated underwriting discounts and commissions.

The number of shares of existing stockholders in the table above is based on (i) 18,936,698 shares of our Class B common stock outstanding as of June 30, 2021, after giving effect to the reclassification of all outstanding shares of our common stock into an equivalent number of our Class B common stock and the filing and effectiveness of our Amended and Restated Certificate of Incorporation in Delaware and (ii) the automatic conversion of all outstanding shares of our convertible preferred stock into an aggregate of 3,359,195 shares of our Class B common stock, the conversion of which will occur immediately prior to the completion of this offering. The number of shares of SAFE investors in the table above are based on the issuance and automatic conversion of convertible notes (which we also refer to as a Simple Agreement for Future Equity agreement

58

(SAFE)) into 727,371 shares of Class A common stock (based on an assumed initial public offering price of $16.00 per share, which is the midpoint of the estimated price range set forth on the cover page of this prospectus). The table above excludes:

To the extent that any outstanding options are exercised or new awards are granted under our equity compensation plans, new investors will experience further dilution.

59

SELECTED FINANCIAL DATA

The statements of operations data for the years ended December 31, 2019 and 2020 and the balance sheet data as of December 31, 2019 and 2020, are derived from our audited financial statements and related notes included elsewhere in this prospectus. The statements of operations data for the six months ended June 30, 2020 and 2021 and the balance sheet data as of June 30, 2021, are derived from our unaudited financial statements and related notes included elsewhere in this prospectus. The unaudited financial data set forth below have been prepared on the same basis as our audited financial statements and, in the opinion of management, reflect all adjustments, consisting only of normal recurring adjustments, that are necessary for the fair statement of such data. Our historical results are not necessarily indicative of the results to be expected in the future. The selected financial data in this section are not intended to replace our financial statements and the related notes, and are qualified in their entirety by the financial statements and related notes included elsewhere in this prospectus.

60

61

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND

RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our financial statements and the related notes to those statements included elsewhere in this prospectus. In addition to historical financial information, the following discussion and analysis contains forward-looking statements that involve risks, uncertainties, and assumptions. Our actual results and timing of selected events may differ materially from those anticipated in these forward-looking statements as a result of many factors, including those discussed under the section titled “Risk Factors” and elsewhere in this prospectus. See the section titled “Special Note Regarding Forward-Looking Statements” elsewhere in this prospectus.

Overview

We are a leading storage cloud platform, providing businesses and consumers cloud services to store, use, and protect their data in an easy and affordable manner. We provide these cloud services through a purpose-built, web-scale software infrastructure built on commodity hardware. From genome sequencing to mapping the world, from saving lives to playing online games, from interacting with a business to running one, data is central to modern existence. By substantially reducing the complexity and frustration of storing, using, and protecting data, we empower customers to focus on their core business operations. Through our blog and culture of transparency, we have built a devoted community of millions of readers and brand advocates. Referrals from our community of brand advocates, combined with our highly efficient and primarily self-serve customer acquisition model and an ecosystem of thousands of partners, have allowed us to attract over 480,000 customers as of June 30, 2021. These customers use our Storage Cloud platform across more than 175 countries to grow and protect their business data on our approximately 2 exabytes, or 2 trillion megabytes, of data storage under management. As businesses and consumers shift to the cloud, we believe our cloud services will increasingly become a foundational element of their overall technology stack.

Through our purpose-built software, our Backblaze Storage Cloud provides a platform that is durable, scalable, performant, and secure. This platform is the foundation for our Backblaze B2 Cloud Storage Infrastructure-as-a-Service (IaaS) consumption-based offering and our Backblaze Computer Backup Software-as-a-Service (SaaS) subscription-based offering. Backblaze B2 enables customers to store data, developers to build applications, and partners to expand their use cases. The amount of data stored in this cloud service can scale up and down as needed on a pay-as-you-go basis. Backblaze Computer Backup automatically backs up data from laptops and desktops for businesses and individuals. This cloud backup service offers easily understood flat-rate pricing to continuously back up a virtually unlimited amount of data.

62

Our operations have historically been efficient with limited outside investment. Prior to issuing $10.0 million of convertible notes (which we also refer to as a Simple Agreement for Future Equity agreement (SAFE)) in a private financing round in August 2021, we had raised less than $3.0 million in outside equity since our founding in 2007. This has helped create a culture based on operational efficiency, creativity, and collaborative problem solving. Focusing on storage use cases and promoting an open ecosystem allows us to integrate well with a broad range of partners. From our straightforward pricing model, to our transparent communication with customers, to the popular and insightful content on our blog—we have established ourselves as an open and trusted provider and partner. We have consistently invested in our technology platform and highly efficient content-driven and primarily self-serve go-to-market strategy, allowing us to achieve the following customer, community, and product milestones:

Our Business Model

Our solutions are designed for individuals and businesses of all sizes and across all industries but have a particularly strong appeal to mid-market organizations (which we define as organizations with 10 to 999 employees) due to their desire for easy-to-use solutions. We generate revenue primarily from our two cloud services:

63

Our pricing is simple and straightforward, with fees and terms that are shared transparently on our website. The chart below is a summary of the primary solutions and pricing options we offer.

We have maintained our per-gigabyte B2 Cloud Storage pricing for five years, and we announced price increases to our unlimited subscription Computer Backup pricing in February 2019 and July 2021 with no material impact on customer retention.

We provide simple pricing for usage of our cloud services and increase revenue per customer through our customers’ natural data growth or employee growth. Additionally, we provide customers with additional value through cross-sell, upsell, and use case expansion that result in additional revenue per customer. These options for cross-selling and upselling include the following:

64

For prospective customers interested in B2 Cloud Storage, we offer a free tier and a simple, intuitive sign-up process, allowing them to quickly on-board and start using our solutions. Once prospective customers grow beyond the free storage limit, they have the flexibility to only pay for what they need and pay as they go, without any lock-in or long-term commitments. This is delivered via a consumption-based model, and we charge a fixed price per month per gigabyte of data stored on our platform.

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 Storage Cloud. Prospective customers can then choose to sign up on a per computer basis. The service is delivered via a SaaS model where revenue is recognized ratably over the subscription term. Subscriptions are offered to customers on a monthly, annual, or bi-annual basis, providing customers flexibility to choose their commitment lengths. We charge a flat rate for this solution and provide virtually unlimited backup capabilities to customers. There are no storage limits or tiers. Customers also have the option to subscribe to Extended Version History, which enables them to extend retention of old file versions and deleted files, which are typically saved for 30 days, to a year or perpetually.

We have a highly efficient go-to-market model that is built on a self-serve selling motion. Prospective customers find us through a variety of channels including our website, partners, and brand advocates. We have fostered deep community engagement with valuable content we share on our blog—in 2020 alone, more than 3 million readers consumed content that we shared there. Our content encourages organic, inbound traffic that we believe serves as our greatest source of advocates and referrals. Our frictionless free trial and self-serve sign-up processes help convert our blog readers and referrals from our brand advocates into customers, with over 80% of our revenue in 2020 coming from self-serve customers. In addition to generating customers, a community of thousands of partners has arisen as a result of our efforts. Our developer, alliance, and managed service provider (MSP) partners expand use cases and attract customers, thereby increasing usage of our Storage Cloud and helping to drive revenue growth. New customers and partners ultimately lead to more insight, content, and community engagement, which creates a positive feedback loop that drives additional customers and partners. In addition to our self-serve selling motion, in recent years we have begun to invest in a sales-assisted selling motion to identify opportunities to increase business with existing customers and to assist larger customers in adopting our services. Our sales-assisted selling motion has experienced substantial growth and helps customers that, in 2020, were approximately 20 times larger in terms of average revenue per customer than our self-serve customers. These efficient and effective go-to-market motions have helped us grow rapidly.

Substantially all of our revenue is recurring in nature. We employ a land-and-expand model that drives additional revenue from existing customers. As customers generate, store, and back up more data, their use of our platform increases, creating natural opportunities for revenue expansion. We are able to further expand our relationships with our customers when they adopt new features and use cases that lead to increased usage of our platform. Our land-and-expand strategy is evidenced by our overall net revenue retention rate of 113% and 114% as of December 31, 2019 and 2020, respectively.

The propensity of our customer relationships to expand over time is indicated by the chart below. Each cohort represents customers that were brought onto our platform in that given year.

65

Revenue by Customer Cohort

Factors Affecting Our Performance

We believe that the future growth and performance of our business will depend on several factors, including the following:

Scale Self Service Customer Acquisition

Our business depends, in part, on our ability to add new customers. We believe there is a significant opportunity to further grow our customer base by continuing to make investments in sales and marketing. We will continue investing in our customer acquisition and inbound demand generation activities, which is driven predominantly by our blog content, our case studies, social sharing, earned media, and our self-serve sign up model. We intend to leverage this model as an efficient approach to attract new customers, turning them into brand advocates, partners, and more referrals. Furthermore, we plan to continue to build and scale our paid lead generation and outbound sales motion to increasingly grow in the mid-market.

We also plan to continue to build our ecosystem of partners. We believe that delivering our Storage Cloud solutions through our alliance, developer, and MSP partnerships is an area of opportunity for us. By adding more partners and deepening our relationships with them, we expand our use cases and drive new customer acquisition.

Scale Sales-Assisted Efforts

We believe an increasingly important complement to our self-serve customer acquisition model is our targeted inside Sales team that is focused on a low-touch “sales-assisted” model that supports our larger customers if the need arises. This team focuses on inbound inquiries, outbound prospecting targeting specific use cases, and volume expansion of our self-serve customers.

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. We intend to increase revenue from existing customer relationships through the

66

development of additional features and use cases, expanding our Customer Success initiatives, and natural customer data growth. We have developed add-on services, such as Extended Version History and multi-region selection, which customers pay for on top of existing offerings. Examples of expanding use cases include utilizing Backblaze for additional purposes such as media storage, hybrid cloud support, analytics repositories, and others. We also plan to grow our Customer Success initiatives to ensure customers avail themselves of the full benefits of our platform, thus resulting in increased adoption. As these customers continue to generate, store, and back up data, their use of our platform increases, creating natural opportunities for revenue expansion.

Continued Platform Investment and New Product Launches

We are committed to delivering market-leading products that continue to make cloud storage and backup easy. We believe we must maintain our product quality and strength of our brand in order to retain the current customer base as well as drive further revenue growth in our business. We intend to continue investing in our research and development activities to build upon our strong position in the technology community. We have a history of introducing successful new features and capabilities for our products, and we intend to continue investing heavily to grow our business to take advantage of our expansive market opportunity. We also expect to launch new products that are adjacent to our current offerings, which will provide us with the ability to further cross-sell and upsell.

Investments for Continued Scaling

We are focused on our long-term revenue potential and building out our infrastructure to sustain that growth. On a routine basis, we will focus resources on optimizing the efficiency of our data storage. In some scenarios, we will choose to pass on potential cost savings to the customer, but in other scenarios we will choose to reinvest cost savings back into infrastructure and design.

International Expansion

While our sales and marketing efforts have primarily focused on the United States, our existing customer base spans more than 175 countries, with 28% of our revenue originating outside of the United States for the year ended December 31, 2020. We believe international expansion represents a meaningful opportunity to generate further demand for our solutions in international geographies. We plan to 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.

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 efforts, and assess operational efficiencies. The calculation of the key metrics discussed below may differ from other similarly titled metrics used by other companies, securities analysts, or investors.

67

We also monitor the key business metrics set forth below with respect to our B2 Cloud Storage and Computer Backup solutions.