Amendment No. 3 to Form S-1

PACIFIC CREST SECURITIES

RAYMOND JAMES

EVERCORE

a division of KeyBanc Capital Markets

As filed with the U.S. Securities and Exchange Commission on October 1, 2015

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

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

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, 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, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. (Check one):

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 Securities and Exchange Commission acting pursuant to said Section 8(a), may determine.

The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and we are not soliciting offers to buy these securities in any jurisdiction where the offer or sale is not permitted.

Pure Storage, Inc. is offering 25,000,000 shares of its Class A common stock. This is our initial public offering and no public market currently exists for our shares of Class A common stock. We anticipate that the initial public offering price will be between $16.00 and $18.00 per share.

We have two classes of authorized 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 with respect to voting and conversion. 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 into one share of Class A common stock. Outstanding shares of Class B common stock will represent approximately 98.5% of the voting power of our outstanding capital stock immediately following this offering, with our directors, executive officers and principal stockholders representing approximately 59.9% of such voting power.

Our Class A common stock has been approved for listing on the New York Stock Exchange under the trading symbol “PSTG.”

We are an “emerging growth company” as defined under the federal securities laws. Investing in our Class A common stock involves risks. See “Risk Factors” beginning on page 10.

We have granted the underwriters the right to purchase up to an additional 3,750,000 shares of Class A common stock to cover over-allotments.

The Securities and Exchange Commission and state securities regulators have not approved or disapproved of these securities, or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The underwriters expect to deliver the shares of Class A common stock to purchasers on , 2015.

In a world that runs on flash
What was complex, now is simple
What filled data center racks,
now fits in a box
What took days, now takes hours
What became outdated, now is evergreen

We are responsible for the information contained in this prospectus and in any free writing prospectus we prepare or authorize. We have not authorized anyone to provide you with different information, and we take no responsibility for any other information others may give you. Neither we nor the underwriters are making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should not assume that the information contained in this prospectus is accurate as of any date other than the date on the cover of this prospectus. Our business, financial condition, results of operations and future growth prospects may have changed since that date.

Persons who come into possession of this prospectus and any applicable free writing prospectus in jurisdictions outside the United States are required to inform themselves about and to observe any restrictions as to this offering and the distribution of this prospectus and any such free writing prospectus applicable to that jurisdiction.

Until , 2015 (the 25th day after the date of this prospectus), all dealers that buy, sell or trade shares of our Class A common stock, whether or not participating in this offering, may be required to deliver a prospectus. This delivery is in addition to a dealer’s obligation to deliver a prospectus when acting as an underwriter and with respect to their unsold allotments or subscriptions.

PROSPECTUS SUMMARY

This summary highlights information contained elsewhere in this prospectus. This summary is not complete and does not contain all the information you should consider before investing in our Class A common stock. You should read this entire prospectus carefully, especially the risks of investing in our Class A common stock discussed under the heading “Risk Factors,” and our consolidated financial statements and related notes included elsewhere in this prospectus before making an investment decision. Except as otherwise indicated herein or as the context otherwise requires, references in this prospectus to “Pure Storage,” “Pure,” “the company,” “we,” “us” and “our” refer to Pure Storage, Inc. and its wholly-owned subsidiaries.

PURE STORAGE, INC.

Overview

Our mission is to deliver data storage that transforms business through a dramatic increase in performance and reduction in complexity and costs. Our innovative technology replaces storage systems designed for mechanical disk with all-flash systems optimized end-to-end for solid-state memory. At the same time, our innovative business model replaces the traditional forklift upgrade cycle with an evergreen storage model of hardware and software upgrades and maintenance.

Our next-generation storage platform and business model are the result of our team’s substantial experience in enterprise storage and web-scale infrastructure, as well as frustration with the industry’s status quo. This deep industry understanding led to the development of our three-part integrated platform: the Purity Operating Environment, our flash-optimized software, FlashArray, our modular and scalable all-flash array hardware, and Pure1, our cloud-based management and support. Our platform can deliver a 10X acceleration in business applications over legacy disk-based storage. It is also designed to be compatible with existing infrastructure, substantially more reliable and power and space efficient.

Our business model builds on our technology innovations to reverse the traditional storage business model. Instead of moving data between old and new systems via forklift upgrades, we keep business data and applications in place and upgrade technology around it. Our platform and business model are designed to add value to customers for a decade or more, reducing total cost of storage ownership while increasing loyalty.

Our innovations help rebalance the datacenter by closing the performance gap between legacy storage technology and servers and networks. But it is the simplicity of our platform and business model that is revolutionizing the enterprise storage experience. Together, our innovations have helped our customers realize the promise of the cloud model for IT and the benefits of Moore’s Law. This has yielded industry-leading Net Promoter scores, based on the results of customer satisfaction surveys we conducted.

Since launching FlashArray in May 2012, our customer base has grown to over 1,100 customers. Our customers include large and mid-size organizations across a diverse set of industry verticals, including cloud-based software and service providers, consumer web, education, energy, financial services, governments, healthcare, manufacturing, media, retail and telecommunications. Our platform is used for a broad set of storage use cases, including database applications, private and public cloud infrastructure, virtual server infrastructure and virtual desktop infrastructure. Our platform helps customers increase employee productivity, improve operational efficiency, make better decisions through faster, more accurate analytics and deliver more compelling user experiences to their customers and partners.

We sell our platform predominantly through a high touch, channel-fulfilled model. Our sales force works collaboratively with our global network of distribution and channel partners, which provides us broad sales reach while maintaining direct customer engagement.

This market opportunity is reflected in our rapid growth. Our revenue increased from $6.1 million for the fiscal year ended January 31, 2013 to $42.7 million for the fiscal year ended January 31, 2014 and to $174.5 million for the fiscal year ended January 31, 2015, representing year-over-year revenue growth of 603% and 308% for our two most recent fiscal years. Our revenue increased from $59.4 million for the six months ended July 31, 2014 to $158.7 million for the six months ended July 31, 2015, representing period-over-period growth of 167% for our most recent interim period. Our net loss was $23.4 million, $78.6 million, and $183.2 million for the fiscal years ended January 31, 2013, 2014 and 2015, respectively and $95.2 million and $113.0 million for the six months ended July 31, 2014 and 2015, respectively. For the fiscal year ended January 31, 2015 and the six months ended July 31, 2015, 77% and 78% of our revenue was from the United States and 23% and 22% from the rest of the world, respectively.

Industry Background

Technology continues to transform business—redefining how products and services are built, how customers and partners are served and how organizations innovate. As a result, organizations face the urgent need to operate with greater speed and to leverage technology to be smarter and more innovative. Indeed, the speed, agility and efficiency of an organization’s information systems contribute to and in many cases define competitive advantage.

Organizations must make technology investments that improve IT performance and in parallel reduce the cost and complexity of their operations. Technology that can quickly adapt to ever-changing requirements and drive these dual and seemingly opposed requirements of improving both performance and efficiency is essential.

Business Transformation through Improved Performance. The speed of servers and networks has dramatically improved over the past several decades, but the performance of disk-based storage has not kept up. Disk-based storage is now an obstacle to application performance.

Flash memory is a solid-state storage technology that can eliminate the storage bottleneck, while providing better performance, greater storage density and improved power efficiency as compared to disk. Flash memory has transformed today’s consumer technology experience—it is the storage media inside smartphones—and it is now time for business to enjoy those same benefits. The price performance of flash technology also has improved dramatically in recent years. Already, leading web-scale companies such as Apple, Facebook and Google are utilizing flash-based storage in their datacenters.

Even when retrofitted with flash, legacy approaches to storage generally fall short. Too often, they rely on legacy storage software, which was optimized for the serial and sequential read and write patterns of disk. They do not take full advantage of the parallelizable and random access nature of flash. Even modern hybrid storage approaches—those that pair flash and disk designs—are inadequate, as they suffer from the speed of the far slower disk operations.

IT Transformation through Reduced Costs and Complexity. Cloud computing has been one of the more compelling IT advances in years. Today, organizations use shared resources in the cloud, significantly reducing the cost and complexity of operations and datacenters. Organizations around the world are now adopting many of the core tenets of this cloud model to transform their own operations and datacenters.

Legacy disk-based storage is generally inconsistent with the design tenets of the cloud. It does not scale easily, and is complex and costly to manage, often requiring expert consultants for routine operations. Most legacy disk-based storage requires organizations to replace their storage systems every 3 to 5 years. This is expensive and worrisome for customers, who must juggle upgrades and downtime during the data migration period. The result is an endless and time-consuming cycle of procurement, provisioning and troubleshooting of data storage.

Next-Generation Storage. With the increased demands of a complex and changing business environment, we believe organizations not only desire but also require a new storage platform that combines the following:

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Dramatically improved performance to keep up with the demands of the business;

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Reliability, security and data management services for operating in mission critical environments;

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Seamless interoperability for compatibility with existing IT infrastructure investments;

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Simplicity, agility, easy automation and elasticity to enable the cloud model of IT; and

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Greater price performance and reduced total cost of ownership.

Our Solution

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Business Transformation. With Pure Storage, customers’ business applications run faster—helping them to improve yields, employee productivity and customer and partner experiences, allowing them to make smarter decisions, and enabling them to increase innovation across their organizations.

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Technology Transformation. Our platform increases the efficiency, agility and simplicity of IT infrastructure, enabling our customers to reduce the cost and complexity of operations and implement the cloud model.

The following differentiates our storage platform:

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High Performance. Our FlashArray and Purity Operating Environment software were specifically architected for the fast parallelizable and random access of flash. The result is that customers can eliminate more than one year of cumulative application latency every month as compared to legacy disk-based storage in typical deployments.

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Enterprise Resiliency. Our platform, through the Purity Operating Environment, enables customers to maintain continuous access to their data without a loss in performance, even in the event of hardware or software component failures or during upgrades.

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Simplicity. Our platform is simple to deploy, manage and upgrade for a wide variety of customer use cases—the basic operating commands fit on a single, folding business card. Our platform is designed to seamlessly integrate with existing investments in server and application infrastructure.

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Agile Management. Through Pure1, we deliver an integrated cloud-based management and support experience. We originate most of the support interactions we have with our customers, consistent with our proactive focus on helping our customers quickly respond to issues and stay ahead of changes to their storage requirements.

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Evergreen Storage. Our platform is designed to support customer deployments for a decade or more. Through our innovative business model, we provide software updates, any needed hardware replacements, and a controller refresh every three years so the customer can run the latest Purity Operating Environment for predictable maintenance fees.

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Compelling Economics. Our FlashReduce software, combined with consumer-grade flash memory, allows customers to achieve price-performance levels that enable our platform to be deployed across a wide range of use cases.

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Lower Total Cost of Ownership. Our platform reduces the space, power, cooling, management overhead and other associated expenses as compared to disk-based storage.

Growth Strategies

Key elements of our growth strategy include:

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Relentlessly Innovate and Maintain Technology Leadership. We will continue to invest in product innovation and technology leadership and plan to enhance our flash-optimized software, modular and scalable hardware and cloud-based management and support.

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Continue to Drive Large Customer Adoption. We intend to grow our base of customers, including large customers, by promoting our platform, increasing our investment in sales and marketing and leveraging our network of channel partners.

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Further Leverage our Channel Ecosystem. We intend to continue investing in training, demand generation and partner programs. We also believe we can enable many of our partners to independently identify, qualify, sell and upgrade customers, with limited involvement from us.

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Drive Greater Penetration into our Existing Customer Base. We believe our over 1,100 customers represent a significant opportunity for us to realize incremental sales. We sell additional products and services to our customers as the data within their existing application deployments naturally grows and as customers migrate additional applications to our platform.

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Cultivate our Inspirational Culture. We believe our culture is a critical part of our success. We strive to maintain an exciting and supportive atmosphere that attracts great talent and inspires our employees to excel and deliver a differentiated experience for our customers.

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Leverage our Technology Ecosystem. We will continue to develop strategic relationships with technology vendors to allow integration of our platform with their offerings, enabling a streamlined experience for our customers.

Risks Associated with Our Business

Our business is subject to numerous risks and uncertainties including those highlighted in the section titled “Risk Factors” immediately following this prospectus summary. These risks include, among others, the following:

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We have experienced rapid growth in recent periods, and we may not be able to sustain or manage future growth effectively.

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We intend to continue focusing on revenue growth and increasing our market penetration and international presence at the expense of near-term profitability by investing heavily in our business.

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We have a limited operating history, which makes our future operating results difficult to predict.

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The market for all-flash storage products is rapidly evolving, which makes it difficult to forecast customer adoption rates and demand for our products.

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We face intense competition from a number of established companies and new entrants.

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Many of our established competitors have long-standing relationships with key decision makers at many of our current and prospective customers, which may inhibit our ability to compete effectively and maintain or increase our market share.

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Our ability to increase our revenue will substantially depend on our ability to attract, motivate and retain sales, engineering and other key personnel, including our management team, and any failure to attract, motivate and retain these employees could harm our business, operating results and financial condition.

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If we fail to adequately expand our sales force, our growth will be impeded.

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The success of our business depends in part on our ability to protect and enforce our intellectual property rights.

If we are unable to adequately address these and other risks we face, our business, financial condition, operating results and prospects may be adversely affected.

Emerging Growth Company Status

We are an “emerging growth company” as defined in the Jumpstart Our Business Startups Act, or the JOBS Act, enacted in April 2012, and therefore we intend to take advantage of certain exemptions from various public company reporting requirements, including not being required to have our internal control over financial reporting audited by our independent registered public accounting firm pursuant to Section 404(b) of the Sarbanes-Oxley Act of 2002, reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements, exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and any golden parachute payments not previously approved. We may take advantage of these exemptions for up to five years or until we are no longer an “emerging growth company,” whichever is earlier.

Corporate Information

We were incorporated in Delaware in October 2009 as OS76, Inc. In January 2010, we changed our name to Pure Storage, Inc. Our principal executive offices are located at 650 Castro Street, Suite 400, Mountain View, California 94041, and our telephone number is (800) 379-7873. Our website address is www.purestorage.com. Information contained on or accessible through our website is not a part of this prospectus and the inclusion of our website address in this prospectus is an inactive textual reference only.

Pure Storage, the “P” logo, Purity Operating Environment, FlashArray, Pure1 and other trade names, trademarks or service marks of Pure Storage appearing in this prospectus are the property of Pure Storage. Trade names, trademarks and service marks of other companies appearing in this prospectus are the property of their respective holders.

THE OFFERING



Class A common stock offered		25,000,000 shares

Class A common stock to be outstanding after this offering		25,000,000 shares

Class B common stock to be outstanding after this offering		160,056,764 shares

Total Class A and Class B common stock to be outstanding after this offering		185,056,764 shares

Over-allotment option of Class A common stock offered		3,750,000 shares

Voting rights		We have two classes of authorized common stock: Class A common stock and Class B common stock. The rights of the holders of Class A and Class B common stock are identical, except with respect to voting and conversion rights. The holders of Class A common stock are entitled to one vote per share, and the holders of Class B common stock are entitled to ten votes per share, on all matters that are subject to stockholder vote. Following this offering, each share of Class B common stock may be converted into one share of Class A common stock at the option of the holder thereof, and will be converted into one share of Class A common stock upon transfer thereof, subject to certain exceptions. See “Description of Capital Stock” for additional information.

Use of proceeds		We estimate that the net proceeds from this offering will be approximately $395.2 million, based on an assumed initial public offering price of $17.00 per share, the midpoint of the price range set forth on the cover page of this prospectus, after deducting underwriting discounts and commissions and estimated offering expenses payable by us. We intend to use the net proceeds from this offering primarily for general corporate purposes, including expansion of our product development and sales and marketing organizations. We may also use a portion of the net proceeds from this offering for acquisitions of, or investments in, technologies, solutions or businesses that complement our business, although we have no commitments or agreements to enter into such acquisitions or investments. See “Use of Proceeds” for additional information.

New York Stock Exchange symbol		“PSTG”

The number of shares of Class A and Class B common stock to be outstanding after this offering is based on no shares of our Class A common stock and 160,056,764 shares of our Class B common stock outstanding as of July 31, 2015, and excludes:

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59,928,620 shares of Class B common stock issuable upon the exercise of outstanding stock options as of July 31, 2015 under our 2009 Equity Incentive Plan with weighted-average exercise price of $4.53 per share;

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15,102,581 shares of Class B common stock reserved for future issuance under our 2009 Equity Incentive Plan as of July 31, 2015, of which stock options to purchase an aggregate of 9,254,999 shares of Class B common stock were granted subsequent to July 31, 2015, with an exercise price of $17.00 per share; all shares reserved for future issuance and not subject to an outstanding stock option will cease to be available for issuance at the time our 2015 Equity Incentive Plan becomes effective in connection with this offering;

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700,000 shares of Class B common stock that we issued in September 2015 to the Pure Good Foundation;

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27,000,000 shares of Class A common stock reserved for future issuance under our 2015 Equity Incentive Plan, as well as any automatic increases in the number of shares of Class A common stock reserved for future issuance under this plan, which will become effective upon the execution of the underwriting agreement for this offering; and

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3,500,000 shares of Class A common stock reserved for future issuance under our 2015 Employee Stock Purchase Plan, as well as any automatic increases in the number of shares of Class A common stock reserved for future issuance under this plan, which will become effective upon the execution of the underwriting agreement for this offering.

In addition, unless we specifically state otherwise, all information in this prospectus assumes:

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that our amended and restated certificate of incorporation, which we will file in connection with the closing of this offering, and our amended and restated bylaws adopted in connection with this offering are effective;

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the conversion of all outstanding shares of our preferred stock into an aggregate of 122,280,679 shares of Class B common stock immediately upon the closing of this offering;

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no exercise of outstanding options; and

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no exercise by the underwriters of their right to purchase up to an additional 3,750,000 shares of Class A common stock to cover over-allotments.

SUMMARY CONSOLIDATED FINANCIAL DATA

The following tables summarize our consolidated financial data. We have derived the consolidated statements of operations data for the fiscal years ended January 31, 2014 and 2015 from our audited financial statements included elsewhere in this prospectus. The selected consolidated statements of operations data for the fiscal year ended January 31, 2013 are derived from our unaudited consolidated financial statements not included in this prospectus. We have derived the selected consolidated financial statements of operations data for the six months ended July 31, 2014 and 2015 and consolidated balance sheet data as of July 31, 2015 from our unaudited consolidated financial statements included elsewhere in the prospectus. The unaudited consolidated financial statements were prepared on a basis consistent with our audited financial statements. Our historical results are not necessarily indicative of the results that may be expected in the future and our results for the six months ended July 31, 2015 are not necessarily indicative of the results that may be expected for the full fiscal year.

You should read this data together with our consolidated financial statements and related notes appearing elsewhere in this prospectus and the sections titled “Selected Consolidated Financial Data” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations.”


	Fiscal Year Ended January 31,									Six Months Ended July 31,
	2013			2014			2015			2014			2015
										(unaudited)
	(in thousands, except per share data)
Consolidated Statements of Operations Data:
Revenue:
Product	$	5,474		$	39,228		$	154,836		$	53,253		$	134,810
Support		603			3,505			19,615			6,159			23,928

Total revenue		6,077			42,733			174,451			59,412			158,738
Cost of revenue:
Product⁽¹⁾		3,605			19,974			63,425			22,608			50,353
Support⁽¹⁾		709			4,155			14,127			4,924			14,421

Total cost of revenue		4,314			24,129			77,552			27,532			64,774

Gross profit		1,763			18,604			96,899			31,880			93,964
Operating expenses:
Research and development⁽¹⁾		12,383			36,081			92,707			40,533			69,870
Sales and marketing⁽¹⁾		10,727			54,750			152,320			71,563			107,844
General and administrative⁽¹⁾		2,017			5,902			32,354			14,419			27,919

Total operating expenses		25,127			96,733			277,381			126,515			205,633

Loss from operations		(23,364	)		(78,129	)		(180,482	)		(94,635	)		(111,669	)
Other income (expense), net		(6	)		(141	)		(1,412	)		(307	)		(1,074	)

Loss before provision for income taxes		(23,370	)		(78,270	)		(181,894	)		(94,942	)		(112,743	)
Provision for income taxes		2			291			1,337			257			214

Net loss		$ (23,372	)	$	(78,561	)	$	(183,231	)	$	(95,199	)	$	(112,957	)

Net loss per share attributable to common stockholders, basic and diluted⁽²⁾	$	(1.28	)	$	(3.24	)	$	(6.56	)	$	(3.66	)	$	(3.41	)

Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted⁽²⁾		18,239			24,237			27,925			25,976			33,154

Pro forma net loss per share attributable to common stockholders, basic and diluted⁽²⁾							$	(1.26	)				$	(0.73	)

Weighted-average shares used in computing pro forma net loss per share attributable to common stockholders, basic and diluted⁽²⁾								145,719						155,435

(1)	Includes stock-based compensation expense as follows:


	Fiscal Year Ended January 31,						Six Months Ended July 31,
	2013		2014		2015		2014		2015
							(unaudited)
	(in thousands)
Cost of revenue—product	$	66	$	253	$	303	$	229	$	96
Cost of revenue—support		—		316		1,273		898		854
Research and development		752		11,477		22,512		15,147		10,429
Sales and marketing		342		9,014		22,466		17,361		5,980
General and administrative		256		506		6,479		4,508		3,300

Total stock-based compensation expense	$	1,416	$	21,566	$	53,033	$	38,143	$	20,659

Stock-based compensation expense for the fiscal years ended January 31, 2014 and 2015 and the six months ended July 31, 2014 included $13.3 million, $27.6 million, and $27.6 million, respectively, of cash paid for the repurchase of common stock in excess of fair value. See Note 9 to our consolidated financial statements for additional information.

(2)	See Note 10 to our consolidated financial statements for an explanation of the method used to calculate our actual and pro forma basic and diluted net loss per share attributable to common stockholders and the weighted-average number of shares used in the computation of the per share amounts.


	As of July 31, 2015
	Actual			Pro Forma⁽¹⁾		Pro Forma As Adjusted⁽²⁾⁽³⁾
	(unaudited)
	(in thousands)
Consolidated Balance Sheet Data:
Cash and cash equivalents	$	128,282		$	128,282	$	523,482
Working capital		147,554			147,554		542,754
Total assets		336,563			336,563		731,763
Deferred revenue, current and noncurrent portion		123,482			123,482		123,482
Convertible preferred stock		543,940			—		—
Total stockholders’ (deficit) equity		(388,028	)		155,912		551,112

(1)	The pro forma column reflects the conversion of all outstanding shares of convertible preferred stock into 122,280,679 shares of Class B common stock immediately upon the closing of this offering.

(2)

The pro forma as adjusted column further reflects the receipt of $395.2 million in net proceeds from our sale of shares of Class A common stock in this offering at an assumed initial public offering price of $17.00 per share, the midpoint of the price range set forth on the cover page of this prospectus, after deducting underwriting discounts and commissions and estimated offering expenses payable by us.

(3)

Each $1.00 increase or decrease in the assumed initial public offering price of $17.00 per share would increase or decrease, respectively, the amount of cash and cash equivalents, working capital, total assets and total stockholders’ (deficit) equity by $23.5 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 underwriting discounts and commissions and estimated offering expenses payable by us. We may also increase or decrease the number of shares we are offering. An increase or decrease of 1,000,000 in the number of shares we are offering would increase or decrease, respectively, the amount of cash and cash equivalents, working capital, total assets and total stockholders’ (deficit) equity by approximately $16.0 million, assuming the assumed initial public offering price per share, as set forth on the cover page of this prospectus, remains the same after deducting underwriting discounts and commissions. The pro forma as adjusted information is illustrative only, and we will adjust this information based on the actual initial public offering price and other terms of this offering determined at pricing.

Investing in our Class A common stock involves a high degree of risk. You should carefully consider the risks and uncertainties described below, together with all of the other information contained in this prospectus, including our consolidated financial statements and the related notes appearing at the end of this prospectus, before deciding to invest in our Class A common stock. If any of the following risks actually occur, it could harm our business, prospects, operating results and financial condition. In such event, the trading price of our Class A common stock could decline and you might lose all or part of your investment.

We have experienced rapid growth in recent periods, and we may not be able to sustain or manage future growth effectively.

We have significantly expanded our overall business, customer base, headcount, channel partner relationships and operations in recent periods, and we anticipate that we will continue to expand and may experience rapid growth in future periods. For example, from January 31, 2014 to January 31, 2015, our headcount increased from over 350 to over 800 employees, and to over 1,100 employees as of July 31, 2015. Our future operating results will depend to a large extent on our ability to successfully manage our anticipated expansion and growth. To manage our growth successfully, we believe that we must, among other things, effectively:

We expect that our future growth will continue to place a significant strain on our managerial, administrative, operational, financial and other resources. We will incur costs associated with this future growth prior to realizing the anticipated benefits, and the return on these investments may be lower, may develop more slowly than we expect or may never materialize. If we are unable to manage our growth effectively, we may not be able to take advantage of market opportunities or develop new products or enhancements to existing products in a timely manner, and we may fail to satisfy customers’ expectations, maintain product quality, execute on our business plan or adequately respond to competitive pressures, each of which could adversely affect our business and operating results.

We intend to continue focusing on revenue growth and increasing our market penetration and international presence at the expense of near-term profitability by investing heavily in our business.

Our strategy is to increase our investments in marketing, sales, support and research and development at the expense of near-term profitability. We believe our decision to continue investing heavily in our business will be critical to our future success. We anticipate that our operating costs and expenses will increase substantially for the foreseeable future. In addition, we expect to incur significant legal, accounting and other expenses that we did not incur as a private company. Even if we achieve significant revenue growth, we may continue to experience losses, similar or greater than to those we have incurred historically.

We have not achieved profitability for any fiscal year since our inception. We incurred a net loss of approximately $183.2 million for the fiscal year ended January 31, 2015 and $113.0 million for the six months ended July 31, 2015, and we had an accumulated deficit of $341.6 million and $454.5 million as of January 31, 2015 and July 31, 2015, respectively. Our operating expenses largely are based on anticipated revenue, and a high percentage of our expenses are, and will continue to be, fixed in the short term. If we fail to adequately increase revenue and manage costs, we may not achieve or maintain profitability in the future. As a result, our business could be harmed and our operating results could suffer.

We have a limited operating history, which makes our future operating results difficult to predict.

We were founded in October 2009, but have generated substantially all of our revenue since February 1, 2013. We have a limited operating history in an industry characterized by rapid technological change, changing customer needs, evolving industry standards and frequent introductions of new products and services. Our limited operating history makes it difficult to evaluate our current business and our future prospects, including our ability to plan for and model future growth. All of these factors make our future operating results difficult to predict, which may impair our ability to manage our business and reduce your ability to assess our prospects.

You should not consider our revenue growth in prior quarterly or annual periods as indicative of our future performance. In future periods, we do not expect to achieve similar percentage revenue growth rates as we have achieved in some past periods. If we are unable to maintain adequate revenue or revenue growth, our stock price could be volatile, and it may be difficult to achieve and maintain profitability.

The market for all-flash storage products is rapidly evolving, which makes it difficult to forecast customer adoption rates and demand for our products.

The market for all-flash storage products is rapidly evolving. As a result, our future financial performance will depend on the continued growth of this market and on our ability to adapt to emerging customer demands and trends. Sales of our products are currently focused on use cases that require performance storage products such as virtualization and transaction processing. Many of our target customers have never purchased all-flash storage products and may not have the desire or available budget to invest in a new technology such as ours. It is difficult to predict with any precision customer adoption rates, customer demand for our products or the future growth rate and size of our market. Our products may never reach mass adoption, and changes or advances in alternative technologies or adoption of cloud storage offerings not utilizing our storage platform could adversely affect the demand for our products. Further, although flash storage has a number of advantages as compared to other data storage alternatives, such as hard disk drives, flash storage has certain limitations as well, including a higher price per gigabyte of raw storage, more limited methods for data recovery and reduced performance gains for certain uses, including sequential input/output, or I/O, transactions. A slowing in or reduced demand for all-flash storage products caused by lack of customer acceptance, technological challenges, alternative technologies and products or otherwise would result in a lower revenue growth rate or decreased revenue, either of which would negatively impact our business and operating results.

We face intense competition from a number of established companies and new entrants.

We face intense competition from a number of established companies that sell competitive storage products. These competitors include Dell, EMC, HP, Hitachi Data Systems, IBM, Lenovo and NetApp. These competitors, as well as other potential competitors, may have:

We also face competition from a number of other companies, one or more of which may become significant competitors in the future. New competitors could emerge and acquire significant market share. All of our competitors may utilize a broad range of competitive strategies. For example, some of our competitors have offered bundled products and services in order to reduce the initial cost of their storage products. Our competitors may also choose to adopt more aggressive pricing policies than we choose to adopt. Some of our competitors have offered their products either at significant discounts or even for free in response to our efforts to market the overall benefits and technological merits of our products.

Many competitors have developed competing all-flash or hybrid storage technologies. For example, some of our competitors have developed all-flash storage products with data reduction technologies that directly compete with our products. We expect our competitors to continue to improve the performance of their products, reduce their prices and introduce new services and technologies that may, or that they may claim to, offer greater performance and improved total cost of ownership as compared to our products. In addition, our competitors may develop enhancements to, or future generations of, competitive products that may render our products or technologies obsolete or less competitive. These and other competitive pressures may prevent us from competing successfully against current or future competitors.

Many of our competitors benefit from established brand awareness and long-standing relationships with key decision makers at many of our current and prospective customers. We expect that our competitors will seek to leverage these existing relationships to discourage customers from purchasing our products. In particular, when competing against us, we expect our competitors to emphasize the perceived risks of relying on products from a company with a shorter operating history. Additionally, most of our prospective customers have existing storage systems manufactured by our competitors. This gives an incumbent competitor an advantage in retaining the customer because the incumbent competitor already understands the customer’s network infrastructure, user demands and IT needs. In the event that we are unable to successfully sell our products to new customers or persuade our customers from continuing to purchase our products, we may not be able to maintain or increase our market share and revenue, which could adversely affect our business and operating results.

Our ability to increase our revenue will substantially depend on our ability to attract and retain qualified sales, engineering and other key employees, including our management. These positions may require candidates with specific backgrounds in software and the storage industry, and competition for employees with such expertise is intense. Our ability to attract, motivate or retain employees may be reduced as we become a public company, as the value of our stock fluctuates and as our employees have the opportunity to sell their equity after this offering. We may not be successful in attracting, motivating and retaining qualified personnel. We have from time to time experienced, and we expect to continue to experience, difficulty in hiring and retaining highly skilled employees with appropriate qualifications. To the extent that we are successful in hiring to fill these positions, we need a significant amount of time to train the new employees before they can become effective and efficient in performing their jobs. From time to time, there may be changes in our management team resulting from the hiring or departure of those individuals. Members of our management team, including our executive officers, are generally employed on an at-will basis, which means that they could terminate their employment with us at any time. If we are unable to attract, motivate and retain qualified sales, engineering and other key employees, including our management, our business and operating results could suffer.

If we fail to adequately expand our sales force our growth will be impeded.

We will need to continue to expand and optimize our sales infrastructure in order to grow our customer base and our business. We plan to continue to expand our sales force, both domestically and internationally. Identifying, recruiting and training qualified sales personnel require significant time, expense and attention. It can take time before our sales representatives are fully trained and productive. Our business may be adversely affected if our efforts to expand and train our sales force do not generate a corresponding increase in revenue. In particular, if we are unable to hire, develop and retain qualified sales personnel or if new sales personnel are unable to achieve desired productivity levels in a reasonable period of time, we may not be able to realize the expected benefits of this investment or increase our revenue.

If we fail to develop and introduce new or enhanced products on a timely basis, our ability to attract and retain customers could be impaired and our competitive position could be harmed.

We operate in a dynamic environment characterized by rapidly changing technologies and industry standards and technological obsolescence. To compete successfully, we must design, develop, market and sell new or enhanced products that provide increasingly higher levels of performance, capacity and reliability and that meet the cost expectations of our customers, which is a complex and uncertain process. The introduction of new products by our competitors, the market acceptance of products based on new or alternative technologies or the emergence of new industry standards could render our existing or future products obsolete or less competitive. As we introduce new or enhanced products, we must successfully manage product launches and transitions to the next generations of our products. For example, in June 2015, we announced our new FlashArray//m product. If we are not able to successfully manage the transition from our FlashArray 400-Series product to our FlashArray//m product, our business, operating results and financial condition could be harmed. Similarly, if we fail to introduce new or enhanced products that meet the needs of our customers in a timely or cost-effective fashion, we will lose market share and our operating results will be adversely affected.

Our research and development efforts may not produce successful products that result in significant revenue in the near future, if at all.

Developing new products and related enhancements is expensive and time intensive. Our investments in research and development may result in products that may not achieve market adoption, are more expensive to develop than anticipated, may take longer to generate revenue or may generate less revenue than we anticipate. Our future plans include significant investments in research and development for new products and related opportunities. We believe that we must continue to dedicate significant resources to our research and development efforts to maintain or expand our competitive position. However, these efforts may not result in significant revenue in the near future, if at all, which could adversely affect our business and operating results.

If we fail to successfully maintain or grow our relationships with channel partners, our business, operating results and financial condition could be harmed.

Our future success is highly dependent upon our ability to establish and maintain successful relationships with a variety of channel partners in markets where we do not have a large direct sales force or direct customer support personnel. In addition to selling our products, our partners may offer installation, post-sale service and support on our behalf in their local markets. In markets where we rely on partners more heavily, we have less contact with our customers and less control over the sales process and the quality and responsiveness of our partners. As a result, it may be more difficult for us to ensure the proper delivery and installation of our products or the quality or responsiveness of the support and services being offered. Any failure on our part to effectively identify, train and manage our channel partners and to monitor their sales activity, as well as the customer support and services being provided to our customers in their local markets, could harm our business, operating results and financial condition.

Our channel partners may choose to discontinue offering our products and services or may not devote sufficient attention and resources toward selling our products and services. We typically enter into non-exclusive, written agreements with our channel partners. These agreements generally have a one-year, self-renewing term, have no minimum sales commitment and do not prohibit our channel partners from offering products and services that compete with ours. Accordingly, our channel partners may choose to discontinue offering our products and services or may not devote sufficient attention and resources toward selling our products and services. Additionally, our competitors may provide incentives to our existing and potential channel partners to use, purchase or offer their products and services or to prevent or reduce sales of our products and services. The occurrence of any of these events could harm our business, operating results and financial condition.

Our gross margins are impacted by a variety of factors, are subject to variation from period to period and are difficult to predict.

Our gross margins fluctuate from period to period due primarily to product costs, customer mix and product mix. Over the fiscal year ended January 31, 2015, and the six months ended July 31, 2015, our quarterly gross margins ranged from 53% to 60%. Our gross margins are likely to continue to fluctuate and may be affected by a variety of factors, including:

Due to such factors, gross margins are subject to variation from period to period and are difficult to predict. If we are unable to manage these factors effectively, our gross margins may decline, and fluctuations in gross margins may make it difficult to manage our business and achieve or maintain profitability, which could materially harm our business, operating results and financial condition.

Our operating results may fluctuate significantly, which could make our future results difficult to predict and could cause our operating results to fall below expectations.

Our operating results may fluctuate due to a variety of factors, many of which are outside of our control. As a result, comparing our operating results on a period-to-period basis may not be meaningful. You should not rely on our past results as an indication of our future performance. If our revenue or operating results fall below the expectations of investors or any securities analysts that follow our company, the price of our Class A common stock would likely decline.

Factors that are difficult to predict and that could cause our operating results to fluctuate include:

The occurrence of any one of these risks could negatively affect our operating results in any particular quarter, which could cause the price of our Class A common stock to decline.

Our sales cycles can be long and unpredictable, particularly with respect to large orders, and our sales efforts require considerable time and expense. As a result, it can be difficult for us to predict when, if ever, a particular customer will choose to purchase our products, which may cause our operating results to fluctuate.

Our sales efforts involve educating our customers about the use and benefits of our products, including their technical capabilities and cost saving potential. Larger customers often undertake an evaluation and testing process that can result in a lengthy sales cycle. We spend substantial time and resources on our sales efforts without any assurance that our efforts will produce any sales. In addition, product purchases are frequently subject to budget constraints, multiple approvals and unplanned administrative, processing and other delays. A substantial portion of our quarterly sales typically occurs during the last several weeks of the quarter, which we believe largely reflects customer buying patterns of products similar to ours and other products in the technology industry generally. Since we do not recognize revenue from a sale until title is transferred for the product, if we have a substantial portion of our sales at the end of a quarter, we may be unable to transfer title and recognize the associated revenue in that quarter. Furthermore, our products come with a 30-day money back guarantee, allowing a customer to return a FlashArray product within 30 days of receipt if the customer is not satisfied with its purchase for any reason. In addition, a portion of our sales in any quarter is generated by sales activity initiated during the quarter. These factors, among others, make it difficult for us to predict when customers may purchase our products. We may expend significant resources on an opportunity without ever achieving a sale, which may adversely affect our operating results and cause our operating results to fluctuate. In addition, if sales expected from a specific customer for a particular quarter are not realized in that quarter or at all, our operating results may suffer.

Our company 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 believe that a critical contributor to our success has been our company culture, which we believe fosters innovation, creativity, teamwork, passion for customers and focus on execution, as well as facilitating critical knowledge transfer and knowledge sharing. As we grow and change, we may find it difficult to maintain these important aspects of our company culture, which could limit our ability to innovate and operate effectively. Any failure to preserve our culture could also negatively affect our ability to retain and recruit personnel, continue to perform at current levels or execute on our business strategy.

Because our long-term success depends, in part, on our ability to expand the sales of our products to customers located outside of the United States, our business is susceptible to risks associated with international operations.

We maintain operations outside of the United States. We have been expanding and intend to continue to expand these operations in the future. We have limited experience operating in foreign jurisdictions. Our inexperience in operating our business outside of the United States increases the risk that our international expansion efforts may not be successful. In addition, conducting and expanding international operations subjects us to new risks that we have not generally faced in the United States. These include:

The occurrence of any one of these risks could negatively affect our international operations and, consequently, our business, operating results and financial condition generally.

The sales prices of our products and services may decrease, which may reduce our gross profits and adversely impact our financial results.

The sales prices for our products and services may decline for a variety of reasons, including competitive pricing pressures, discounts, a change in our mix of products and services, the introduction of competing products or services or promotional programs. Competition continues to increase in the markets in which we participate, and we expect competition to further increase in the future, thereby leading to increased pricing pressures. Larger competitors with more diverse product and service offerings may reduce the price of products or services that compete with ours or may bundle them with other products and services. Additionally, although we price our products and services predominantly in U.S. dollars, currency fluctuations in certain countries and regions may negatively impact actual prices that partners and customers are willing to pay in those countries and regions. Furthermore, we anticipate that the sales prices for our products will decrease over product life cycles.

We cannot assure you that we will be successful in developing and introducing new offerings with enhanced functionality on a timely basis, or that our new product and services offerings, if introduced, will enable us to maintain or improve our gross margins and achieve profitability.

We derive substantially all of our revenue from a single family of products, and a decline in demand for these products would cause our revenue to grow more slowly or to decline.

Our FlashArray family of products accounts for all of our revenue and will continue to comprise a significant portion of our revenue for the foreseeable future. As a result, our revenue could be reduced by:

If the market for all-flash storage products grows more slowly than anticipated or if demand for our products declines, we may not be able to increase our revenue or achieve and maintain profitability.

Our products are highly technical and may contain undetected defects, which could cause data unavailability, loss or corruption that might, in turn, result in liability to our customers and harm to our reputation and business.

Our products are highly technical and complex and are often used to store information critical to our customers’ business operations. Our products may contain undetected errors, defects or security vulnerabilities that could result in data unavailability, loss, corruption or other harm to our customers. Some errors in our products may only be discovered after they have been installed and used by customers. Any errors, defects or security vulnerabilities discovered in our products after commercial release could result in a loss of revenue or delay in revenue recognition, injury to our reputation, a loss of customers or increased service and warranty costs, any of which could adversely affect our business and operating results. In addition, errors or failures in the products of third-party technology vendors may be attributed to us and may harm our reputation.

We could face claims for product liability, tort or breach of warranty. Many of our contracts with customers contain provisions relating to warranty disclaimers and liability limitations, which may be difficult to enforce. Defending a lawsuit, regardless of its merit, would be costly and might divert management’s attention and adversely affect the market’s perception of us and our products. Our business liability insurance coverage could prove inadequate with respect to a claim and future coverage may be unavailable on acceptable terms or at all. These product-related issues could result in claims against us, and our business, operating results and financial condition could be harmed.

Our brand name and our business may be harmed by the marketing strategies of our competitors.

Because of the early stage of our business, we believe that building and maintaining brand recognition and customer goodwill is critical to our success. Our efforts in this area have, on occasion, been hampered by the marketing efforts of our competitors, which have included statements about us and our products. If we are unable to effectively respond to the marketing efforts of our competitors and protect our brand and customer goodwill now or in the future, our business will be adversely affected.

Our products must interoperate with third party operating systems, software applications and hardware, and if we are unable to devote the necessary resources to ensure that our products interoperate with such software and hardware, we may lose or fail to increase our market share and may experience reduced demand for our products.

Our products must interoperate with our customers’ existing infrastructure, specifically their networks, servers, software and operating systems, which may be manufactured by a wide variety of vendors. When new or updated versions of these software operating systems or applications are introduced, we must sometimes develop updated versions of our software so that our products will interoperate properly. For example, our Pure1 cloud-based management and support includes connectors to virtualization platforms, allowing our customers to manage the FlashArray from within the native management tools, including for VMware and OpenStack. We may not deliver or maintain interoperability quickly, cost-effectively or at all. These efforts require capital investment and engineering resources. If we fail to maintain compatibility of our products with these infrastructure components, our customers may not be able to fully utilize our products, and we may, among other consequences, lose or fail to increase our market share and experience reduced demand for our products, which may harm our business, operating results and financial condition.

Our products must conform to industry standards in order to be accepted by customers in our markets.

Generally, our products comprise only a part of a datacenter. The servers, network, software and other components and systems of a datacenter must comply with established industry standards in order to interoperate and function efficiently together. We depend on companies that provide other systems in a datacenter to conform to prevailing industry standards. Often, these companies are significantly larger and more influential in driving industry standards than we are. Some industry standards may not be widely adopted or implemented uniformly, and competing standards may emerge that may be preferred by our customers. If larger companies do not conform to the same industry standards that we do, or if competing standards emerge, market acceptance of our products could be adversely affected, which may harm our business.

Our ability to successfully market and sell our products is dependent in part on ease of use and the quality of our support offerings, and any failure to offer high-quality installation and technical support could harm our business.

Once our products are deployed within our customers’ datacenters, customers depend on our support organization to resolve technical issues relating to our products. Our ability to provide effective support is largely dependent on our ability to attract, train and retain qualified personnel, as well as to engage with qualified support partners that provide a similar level of customer support. In addition, our sales process is highly dependent on our product and business reputation and on recommendations from our existing customers. Although our products are designed to be interoperable with existing servers and systems, we may need to provide customized installation and configuration support to our customers before our products become fully operational in their environments. Any failure to maintain, or a market perception that we do not maintain, high-quality installation and technical support could harm our reputation, our ability to sell our products to existing and prospective customers and our business.

We rely on contract manufacturers to manufacture our products, and if we fail to manage our relationship with our contract manufacturers successfully, our business could be negatively impacted.

We rely on a limited number of contract manufacturers to manufacture our products. Our reliance on contract manufacturers reduces our control over the assembly process, and exposes us to risks, such as reduced control over quality assurance, costs and product supply. If we fail to manage our relationships with these contract manufacturers effectively, or if these contract manufacturers experience delays, disruptions, capacity constraints or quality control problems, our ability to timely ship products to our customers could be impaired and our competitive position and reputation could be harmed. If we are required to change contract manufacturers or assume internal manufacturing operations, we may lose revenue, incur increased costs and damage our customer relationships. Qualifying a new contract manufacturer and commencing production is

expensive and time-consuming. We may need to increase our component purchases, contract manufacturing capacity and internal test and quality functions if we experience increased demand. The inability of our contract manufacturers to provide us with adequate supplies of high-quality products could cause a delay in our order fulfillment, and our business, operating results and financial condition may be harmed.

We rely on a limited number of suppliers, and in some cases single-source suppliers, and any disruption or termination of these supply arrangements could delay shipments of our products and could harm our relationships with current and prospective customers.

We rely on a limited number of suppliers, and in some cases, on single-source suppliers, for several key components of our products, and we have not generally entered into agreements for the long-term purchase of these components. For example, the CPUs utilized in our products are supplied by Intel Corporation, or Intel, and neither we nor our contract manufacturers have an agreement with Intel for the procurement of these CPUs. Instead, we purchase the CPUs either directly from Intel or through a reseller on a purchase order basis. Intel or its resellers could stop selling to us at any time or could raise their prices without notice. This reliance on a limited number of suppliers and the lack of any guaranteed sources of supply exposes us to several risks, including:

As a result of these risks, we cannot assure you that we will be able to obtain enough of these key components in the future or that the cost of these components will not increase. If our supply of components is disrupted or delayed, or if we need to replace our existing suppliers, there can be no assurance that additional components will be available when required or that components will be available on terms that are favorable to us, which could extend our lead times, increase the costs of our components and harm our business, operating results and financial condition. Even if we are successful in growing our business, we may not be able to continue to procure components at reasonable prices, which may require us to enter into longer-term contracts with component suppliers to obtain these components at competitive prices. This could increase our costs and decrease our gross margins, harming our business, operating results and financial condition.

Managing the supply of our products and their components is complex. Insufficient supply and inventory may result in lost sales opportunities or delayed revenue, while excess inventory may harm our gross margins.

Our third-party manufacturers procure components and build our products based on our forecasts, and we generally do not hold inventory for a prolonged period of time. These forecasts are based on estimates of future demand for our products, which are in turn based on historical trends and analyses from our sales and marketing organizations, adjusted for overall market conditions. In order to reduce manufacturing lead times and plan for adequate component supply, from time to time we may issue forecasts for components and products that are non-cancelable and non-returnable. Our inventory management systems and related supply chain visibility tools may be inadequate to enable us to make accurate forecasts and effectively manage the supply of our products and components. We have, in the past, had to write off inventory in connection with transitions to new product models. If we ultimately determine that we have excess supply, we may have to reduce our prices and write down or write off excess or obsolete inventory, which in turn could result in lower gross margins. Alternatively, insufficient supply levels may lead to shortages that result in delayed revenue or loss of sales opportunities altogether as potential customers turn to competitors’ products that may be more readily available. If we are unable to effectively manage our supply and inventory, our results of operations could be adversely affected.

If we are unable to sell renewals of our maintenance and support services to our customers, our future revenue and operating results will be harmed.

Existing customers may not renew their maintenance and support agreements after the initial period, and given our limited operating history, we may not be able to accurately predict our renewal rates. Our customers’ renewal rates may decline or fluctuate as a result of a number of factors, including their available budget and the level of their satisfaction with our storage platform, customer support and pricing as compared to that offered by our competitors. If our customers renew their contracts, they may renew on terms that are less economically beneficial to us. We cannot assure you that our customers will renew their maintenance and support agreements, and if our customers do not renew their agreements or renew on less favorable terms, our revenue may grow more slowly than expected, if at all.

We expect that revenue from maintenance and support agreements will increase as a percentage of total revenue over time, and because we recognize this revenue over the term of the relevant contract period, downturns or upturns in sales are not immediately reflected in full in our results of operations.

We expect that revenue from maintenance and support agreements will increase as a percentage of total revenue over time. We recognize maintenance and support revenue ratably over the term of the relevant service period. As a result, much of the maintenance and support revenue we report each quarter is derived from maintenance and support agreements that we sold in prior quarters. Consequently, a decline in new or renewed maintenance and support agreements in any one quarter will not be fully reflected in revenue in that quarter but will negatively affect our revenue in future quarters. Accordingly, the effect of significant downturns in sales of maintenance and support is not reflected in full in our results of operations until future periods. Also, it is difficult for us to rapidly increase our maintenance and support revenue through additional sales in any period, as revenue from renewals must be recognized ratably over the applicable service period.

Adverse economic conditions or reduced datacenter spending may adversely impact our revenues and profitability.

Our operations and performance depend in part on worldwide economic conditions and the impact these conditions have on levels of spending on datacenter technology. Our business depends on the overall demand for datacenter infrastructure and on the economic health of our current and prospective customers. Weak economic conditions, or a reduction in datacenter spending, would likely adversely impact our business, operating results and financial condition in a number of ways, including by reducing sales, lengthening sales cycles and lowering prices for our products and services.

Third-party claims that we are infringing the intellectual property rights of others, whether successful or not, could subject us to costly and time-consuming litigation or require us to obtain expensive licenses, and our business could be harmed.

There is a substantial amount of intellectual property litigation in the flash-based storage industry, and we may become party to, or threatened with, litigation or other adversarial proceedings regarding intellectual property rights with respect to our technology, including interference or derivation proceedings before the U.S. Patent and Trademark Office. Third parties may assert infringement claims against us based on existing or future intellectual property rights. The outcome of intellectual property litigation is subject to uncertainties that cannot be adequately quantified in advance. We have in the past received and may in the future receive inquiries from other intellectual property holders and may become subject to claims that we infringe their intellectual property rights, particularly as we expand our presence in the market and face increasing competition.

For example, in November 2013, EMC Corporation, or EMC, filed a complaint against us in the United States District Court for the District of Massachusetts, alleging that our hiring of EMC employees evidences a scheme to misappropriate EMC’s confidential information and trade secrets and to unlawfully interfere with EMC’s business relationships with its customers and contractual relationships with its employees. In addition, in

November 2013, EMC filed a complaint against us in the United States District Court for the District of Delaware, alleging infringement of five patents held by EMC. While we intend to vigorously defend ourselves in these lawsuits, we are unable to predict the ultimate outcome of this litigation. See the section titled “Business—Legal Proceedings” for more information relating to this litigation.

Any intellectual property rights claim, including the lawsuits brought by EMC, against us or our customers, suppliers, and channel partners, with or without merit, could be time-consuming and expensive to litigate or settle, could divert management’s resources and attention from operating our business and could force us to acquire intellectual property rights and licenses, which may involve substantial royalty payments. Further, a party making such a claim, if successful, could secure a judgment that requires us to pay substantial damages, including treble damages and attorneys’ fees if we are found to have willfully infringed a patent. An adverse determination also could invalidate our intellectual property rights and prevent us from manufacturing and offering our products to our customers and may require that we procure or develop substitute products that do not infringe, which could require significant effort and expense. We may not be able to re-engineer our products successfully to avoid infringement, and we may have to seek a license for the infringed technology, which may not be available on reasonable terms or at all, may significantly increase our operating expenses or may require us to restrict our business activities in one or more respects. Even if we were able to obtain a license, it could be non-exclusive, thereby giving our competitors access to the same technologies licensed to us. Claims that we have misappropriated the confidential information or trade secrets of third parties could have a similar negative impact on our business. Any of these events could harm our business and financial condition.

We currently have a number of agreements in effect pursuant to which we have agreed to defend, indemnify and hold harmless our customers, suppliers and channel partners from damages and costs which may arise from the infringement by our products of third-party patents, trademarks or other proprietary rights. The scope of these indemnity obligations varies, but may, in some instances, include indemnification for damages and expenses, including attorneys’ fees. Our insurance may not cover intellectual property infringement claims. A claim that our products infringe a third party’s intellectual property rights could harm our relationships with our customers, deter future customers from purchasing our products and expose us to costly litigation and settlement expenses. Even if we are not a party to any litigation between a customer and a third party relating to infringement by our products, an adverse outcome in any such litigation could make it more difficult for us to defend our products against intellectual property infringement claims in any subsequent litigation in which we are a named party. Any of these results could harm our brand and financial condition.

The success of our business depends in part on our ability to protect and enforce our intellectual property rights.

We rely on a combination of patent, copyright, service mark, trademark 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. As of July 31, 2015, we had over 200 issued patents and over 150 patent applications in the United States and foreign countries. We cannot assure you that any patents will issue with respect to our currently pending patent applications in a manner that gives us the protection that we seek, if at all, or that any patents issued to us will not be challenged, invalidated, circumvented or held to be unenforceable in actions against alleged infringers. Our issued patents and any patents that may issue in the future with respect to pending or future patent applications may not provide sufficiently broad protection or they may not prove to be enforceable in actions against alleged infringers. Changes to the patent laws in the United States and other jurisdictions could also diminish the value of our patents and patent applications or narrow the scope of our patent protection. We cannot be certain that the steps we have taken will prevent unauthorized use of our technology or the reverse engineering of our technology. Moreover, others may independently develop technologies that are competitive to ours or infringe our intellectual property. Furthermore, any of our trademarks may be challenged by others or invalidated through administrative process or litigation.

Protecting against the unauthorized use of our intellectual property, products and other proprietary rights is expensive and difficult. Litigation may be necessary in the future to enforce or defend our intellectual property rights or to determine the validity and scope of the proprietary rights of others. Any such litigation could result in substantial costs and diversion of management’s resources and attention, either of which could harm our business, operating results and financial condition. Further, many of our current and potential competitors have the ability to dedicate substantially greater resources to defending intellectual property infringement claims and to enforcing their intellectual property rights than we have. Accordingly, we may not be able to prevent third parties from infringing upon or misappropriating our intellectual property. Effective patent, trademark, service mark, copyright and trade secret protection may not be available in every country in which our products are available. An inability to adequately protect and enforce our intellectual property and other proprietary rights could harm our business and financial condition.

If we are unable to protect the confidentiality of our trade secrets, the value of our technology could be materially adversely affected and our business could be harmed.

In addition to the protection afforded by patents, we rely on confidential proprietary information, including trade secrets and know-how to develop and maintain our competitive position. Any disclosure to or misappropriation by third parties of our confidential proprietary information could enable competitors to quickly duplicate or surpass our technological achievements, thus eroding our competitive position in our market. We seek to protect our confidential proprietary information, in part, by confidentiality agreements and invention assignment agreements with our employees, consultants, scientific advisors, contractors and collaborators. These agreements are designed to protect our proprietary information; however, we cannot be certain that such agreements have been entered into with all relevant parties, and we cannot be certain that our trade secrets and other confidential proprietary information will not be disclosed or that competitors will not otherwise gain access to our trade secrets or independently develop substantially equivalent information and techniques. For example, any of these parties may breach the agreements and disclose our proprietary information, including our trade secrets, and we may not be able to obtain adequate remedies for such breaches. We also seek to preserve the integrity and confidentiality of our confidential proprietary information by maintaining physical security of our premises and physical and electronic security of our IT systems, but it is possible that these security measures could be breached. If any of our confidential proprietary information were to be lawfully obtained or independently developed by a competitor, we would have no right to prevent such competitor from using that technology or information to compete with us, which could harm our competitive position. Further, the laws of some foreign countries do not protect proprietary rights to the same extent or in the same manner as the laws of the United States. As a result, we may encounter significant problems in protecting and defending our intellectual property both in the United States and abroad. If we are unable to prevent material disclosure of the intellectual property related to our technologies to third parties, we will not be able to establish or maintain a competitive advantage in our market, which could harm our business.

Our use of open source software could impose limitations on our ability to commercialize our products.

We use open source software in our products and expect to continue to use open source software in the future. Although we monitor our use of open source software, the terms of many open source licenses have not been interpreted by U.S. or foreign courts, and there is a risk that such licenses could be construed in a manner that imposes unanticipated conditions or restrictions on our ability to market our products. From time to time, we may face claims from third parties claiming ownership of, or demanding release of, the open source software or derivative works that we have developed using such software, which could include our proprietary source code, or otherwise seeking to enforce the terms of the applicable open source license. These claims could result in litigation and could require us to make our software source code freely available, seek licenses from third parties in order to continue offering our products for certain uses or cease offering the implicated solutions unless and until we can re-engineer them to avoid infringement. This re-engineering process could require significant additional research and development resources, and we may be required to discontinue providing some of our software in the event re-engineering cannot be accomplished on a timely basis, any of which could harm our business, operating results and financial condition.

System security risks, data protection breaches and cyber-attacks on our systems or products could compromise our proprietary information (or information of our customers), disrupt our internal operations and harm public perception of our products, which could cause our business and reputation to suffer, create additional liabilities and adversely affect our financial results and stock price.

In the ordinary course of business, we store sensitive data on our internal systems, networks and servers, which may include intellectual property, our proprietary business information and that of our customers, suppliers and business partners and sales data, which may include personally identifiable information. Additionally, we design and sell products that allow our customers to store our customers’ data. The security of our own networks and the intrusion protection features of our product are both critical to our operations and business strategy.

We devote significant resources to network security, data encryption and other security measures to protect our systems and data, but these security measures cannot provide absolute security. For example, we use encryption and authentication technologies to secure the transmission and storage of data and prevent third party access to data or accounts, but these security measures are subject to third-party security breaches, employee error, malfeasance, faulty password management or other irregularities. Any destructive or intrusive breach of our internal systems could result in the information stored on our networks being accessed, publicly disclosed, lost or stolen. Additionally, an effective attack on our products could disrupt the proper functioning of our products, allow unauthorized access to sensitive, proprietary or confidential information of ours or our customers, disrupt or temporarily interrupt customers’ operations or cause other destructive outcomes, including the theft of information sufficient to engage in fraudulent transactions. The risk that these types of events could seriously harm our business is likely to increase as we expand our network of channel partners, resellers and authorized service providers and operate in more countries. The economic costs to us to eliminate or alleviate cyber or other security problems, viruses, worms, malicious software systems and security vulnerabilities could be significant and may be difficult to anticipate or measure because the damage may differ based on the identity and motive of the programmer or hacker, which are often difficult to identify. If any of these types of security breaches, actual or perceived, were to occur and we were to be unable to protect sensitive data, our relationships with our business partners and customers could be materially damaged, our reputation and brand could be materially harmed, use of our products could decrease and we could be exposed to a risk of loss or litigation and possible liability.

We may further expand through acquisitions of, or investments in, other companies, each of which may divert our management’s attention, resulting in additional dilution to our stockholders and consumption of resources that are necessary to sustain and grow our business.

Our business strategy may, from time to time, include acquiring complementary products, technologies or businesses. We also may enter into relationships with other businesses in order to expand our product offerings, which could involve preferred or exclusive licenses, additional channels of distribution or discount pricing or investments in other companies. Negotiating these transactions can be time-consuming, difficult and expensive, and our ability to close these transactions may be subject to third-party or government approvals, which are beyond our control. Consequently, we can make no assurance that these transactions, once undertaken and announced, will close.

These kinds of acquisitions or investments may result in unforeseen operating difficulties and expenditures. In particular, we may encounter difficulties assimilating or integrating the businesses, technologies, products, personnel or operations of the acquired companies, particularly if the key personnel of the acquired business choose not to work for us, and we may have difficulty retaining the customers of any acquired business. Acquisitions may also disrupt our ongoing business, divert our resources and require significant management attention that would otherwise be available for development of our business. Any acquisition or investment could expose us to unknown liabilities. Moreover, we cannot assure you that the anticipated benefits of any acquisition or investment would be realized or that we would not be exposed to unknown liabilities. In connection with these types of transactions, we may issue additional equity securities that would dilute our stockholders, use cash that we may need in the future to operate our business, incur debt on terms unfavorable to us or that we are unable to

repay, incur large charges or substantial liabilities, encounter difficulties integrating diverse business cultures and become subject to adverse tax consequences, substantial depreciation or deferred compensation charges. These challenges related to acquisitions or investments could harm our business and financial condition.

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, reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements, and exemptions from the requirements of holding a nonbinding advisory vote on executive compensation and stockholder approval of any golden parachute payments not previously approved. We could be an emerging growth company for up to five years following the completion of this offering. We will remain an emerging growth company until the earliest to occur of (i) the last day of the fiscal year in which we have more than $1.0 billion in annual revenue, (ii) the date we qualify as a “large accelerated filer,” with at least $700 million of equity securities held by non-affiliates, (iii) the date on which we have issued, in any three-year period, more than $1.0 billion in non-convertible debt securities, and (iv) the last day of the fiscal year ending after the fifth anniversary of the completion of this offering. We cannot predict if investors will find our Class A common stock less attractive if we choose to rely on these exemptions. If some investors find our Class A common stock less attractive as a result of any choices we make to avail ourselves of these exemptions, 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.

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 irrevocably elected not to avail ourselves of this accommodation allowing for delayed adoption of new or revised accounting standards, and, therefore, we will be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies.

We may require additional capital to support business growth, and this capital might not be available on acceptable terms, or at all.

We intend to continue to make investments to support our business growth and may require additional funds to respond to business challenges, including the need to develop new products or enhance our existing products, enhance our operating infrastructure and acquire complementary businesses and technologies. Accordingly, we may need to engage in equity or debt financings to secure additional funds. If we raise additional funds through further issuances of equity or convertible debt securities, our stockholders could suffer significant dilution, and any new equity securities we issue could have rights, preferences and privileges superior to those of holders of our common stock. Any debt financing in the future could involve additional restrictive covenants relating to our capital raising activities and other financial and operational matters, which may make it more difficult for us to obtain additional capital and to pursue business opportunities, including potential acquisitions. We may not be able to obtain additional financing on terms favorable to us, if at all. If we are unable to obtain adequate financing or financing on terms satisfactory to us, when we require it, our ability to support our business growth and to respond to business challenges could be significantly limited and our prospects and financial condition could be harmed.

We are exposed to the credit risk of some of our customers, which could harm our business, operating results and financial condition.

Most of our sales are made on an open credit basis. As a general matter, we monitor individual customer payment capability when we grant open credit arrangements and may limit these open credit arrangements based on perceived creditworthiness. We also maintain allowances we believe are adequate to cover exposure for doubtful accounts. Although we have programs in place that are designed to monitor and mitigate these risks, we cannot assure you these programs will be effective in managing our credit risks, especially as we expand our business internationally. If we are unable to adequately control these risks, our business, operating results and financial condition could be harmed.

Sales to U.S. federal, state and local governments are subject to a number of challenges and risks that may adversely impact our business.

Sales to U.S. federal, state and local governmental agencies may in the future account for a significant portion of our revenue. Sales to such government entities are subject to the following risks:

We will need to maintain effective internal control over financial reporting in accordance with Section 404 of the Sarbanes-Oxley Act, and the failure to do so could have a material adverse effect on our business and stock price.

The Sarbanes-Oxley Act requires, among other things, that we maintain effective internal control over financial reporting and disclosure controls and procedures. We will be required to perform system and process evaluation and testing of our internal control over financial reporting to allow management to report on the effectiveness of our internal control over financial reporting, as required by Section 404 of the Sarbanes-Oxley Act, or Section 404. When we are no longer an emerging growth company, our independent registered public accounting firm will also need to attest to the effectiveness of our internal control over financial reporting. Over the last year, we have taken and continue to take additional steps to upgrade our finance and accounting function, including the hiring of additional finance and accounting personnel, and implement additional policies and procedures associated with the financial statement close process. Our compliance with Section 404 may require us to continue to incur substantial expense and expend significant management efforts. If we are unable to

comply with the requirements of Section 404 in a timely manner, or if we or our independent registered public accounting firm notes or identifies deficiencies in our internal control over financial reporting that are deemed to be material weaknesses, the market price of our Class A common stock could decline and we could be subject to sanctions or investigations by the Securities and Exchange Commission, or the SEC, or other regulatory authorities, which would require additional financial and management resources.

Our international operations subject us to potentially adverse tax consequences.

We generally conduct our international operations through wholly-owned subsidiaries and report our taxable income in various jurisdictions worldwide based upon our business operations in those jurisdictions. By the end of 2015, we intend to complete the reorganization of our corporate tax structure and intercompany relationships to more closely align our corporate organization with the expansion of our international business activities. Although we anticipate achieving a reduction in our overall effective tax rate in the future as a result of implementing the new corporate structure, our restructuring efforts will require us to incur expenses in the near term for which we may not realize any benefits.

Our intercompany relationships are, and after the implementation of our new corporate tax structure will continue to be, subject to complex transfer pricing regulations administered by taxing authorities in various jurisdictions. The relevant taxing authorities may disagree with our determinations as to the income and expenses attributable to specific jurisdictions. If such a disagreement were to occur, and our position were not sustained, we could be required to pay additional taxes, interest and penalties, which could result in tax charges, higher effective tax rates, reduced cash flows and lower overall profitability of our operations. In addition, following the implementation of our new corporate tax structure, if the intended tax treatment of the structure is not accepted by the applicable taxing authorities, there are changes in tax law that negatively impact the structure or we do not operate our business consistent with the structure and applicable tax laws and regulations, we may fail to achieve any tax advantages as a result of the new corporate structure, and our future operating results and financial condition may be negatively impacted.

Current U.S. tax laws, including limitations on the ability of taxpayers to claim and utilize foreign tax credits and the deferral of certain tax deductions until earnings outside of the United States are repatriated to the United States, as well as changes to U.S. tax laws that may be enacted in the future, could impact the tax treatment of our foreign earnings. Due to expansion of our international business activities, any changes in the U.S. taxation of such activities may increase our worldwide effective tax rate and adversely affect our financial condition and operating results.

Failure to comply with governmental laws and regulations could harm our business.

Our business is subject to regulation by various federal, state, local and foreign governmental agencies, including agencies responsible for monitoring and enforcing employment and labor laws, workplace safety, product safety, environmental laws, consumer protection laws, anti-bribery laws, import/export controls, federal securities laws and tax laws and regulations. In certain jurisdictions, these regulatory requirements may be more stringent than in the United States. For example, the European Union has adopted certain directives to facilitate the recycling of electrical and electronic equipment sold in the European Union, including the Restriction on the Use of Certain Hazardous Substances in Electrical and Electronic Equipment directive and the Waste Electrical and Electronic Equipment directive. Noncompliance with applicable regulations or requirements could subject us to investigations, sanctions, mandatory product recalls, enforcement actions, disgorgement of profits, fines, damages, civil and criminal penalties or injunctions. If any governmental sanctions are imposed, or if we do not prevail in any possible civil or criminal litigation, our business, operating results and financial condition could be harmed. In addition, responding to any action will likely result in a significant diversion of management’s attention and resources and an increase in professional fees. Enforcement actions and sanctions could harm our business, operating results and financial condition.

Governmental regulations affecting the import or export of products could negatively affect our revenue.

The U.S. and various foreign governments have imposed controls, export license requirements and restrictions on the import or export of some technologies, especially encryption technology. From time to time, governmental agencies have proposed additional regulation of encryption technology, such as requiring the escrow of imports or exports. If we fail to obtain required import or export approval for our products, our international and domestic sales could be harmed and our revenue may be adversely affected. In many cases, we rely on vendors and channel partners to handle logistics associated with the import and export of our products, so our visibility and control over these matters may be limited. In addition, failure to comply with such regulations could result in penalties, costs and restrictions on export privileges, which could harm our business, operating results and financial condition.

Our business is subject to the risks of earthquakes and other natural catastrophic events, and to interruption by man-made factors such as computer viruses or terrorism.

We have operations in locations, including our headquarters in California, that are subject to earthquakes and other natural catastrophic events, such as severe weather and geological events, which could disrupt our operations or the operations of those customers and suppliers. Our customers affected by a natural disaster could postpone or cancel orders of our products, which could negatively impact our business. Moreover, should any of our key suppliers fail to deliver components to us as a result of a natural disaster, we may be unable to purchase these components in necessary quantities or may be forced to purchase components in the open market at significantly higher costs. We may also be forced to purchase components in advance of our normal supply chain demand to avoid potential market shortages. We may not have adequate business interruption insurance to compensate us for losses due to a significant natural disaster or due to man-made factors. In addition, acts of terrorism or malicious computer viruses could cause disruptions in our or our customers’ businesses or the economy as a whole. To the extent that these disruptions result in delays or cancellations of customer orders or the deployment of our products, our business, operating results and financial condition could be harmed.

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 ten votes per share, and our Class A common stock, which is the stock we are selling in this offering, has one vote per share. Upon the closing of this offering, stockholders who hold shares of our Class B common stock, including our executive officers, employees and directors and their affiliates, will collectively hold approximately 98.5% 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 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, Dr. Dietzen and Messrs. Colgrove and Hatfield 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. As board members, Dr. Dietzen and Mr. Colgrove each owe a fiduciary duty to our stockholders and must act in good faith and in a manner they reasonably believe to be in the best interests of our stockholders. However, as stockholders, Dr. Dietzen and Messrs. Colgrove and Hatfield are entitled to vote their shares in their own interests, which may not always be in the interests of our stockholders generally. For a description of the dual class structure, see the section titled “Description of Capital Stock.”

Future sales of shares by existing stockholders could cause our stock price to decline.

If our existing stockholders sell, or indicate an intention to sell, substantial amounts of our Class A common stock in the public market after the lock-up and legal restrictions on resale discussed in this prospectus lapse, the trading price of our Class A common stock could decline. Based on shares outstanding as of July 31, 2015, upon the closing of this offering, we will have outstanding a total of 25,000,000 shares of Class A common stock and 160,056,764 shares of Class B common stock, assuming no exercise of the underwriters’ overallotment option and no exercise of outstanding options, after giving effect to the conversion of all outstanding shares of our preferred stock into shares of Class B common stock upon the closing of this offering. Of these shares, only the shares of Class A common stock sold in this offering will be freely tradable, without restriction, in the public market immediately after the offering. Each of our directors and officers and other holders of substantially all of our outstanding shares have entered into lock-up agreements with the underwriters that restrict their ability to sell or transfer their shares. The lock-up agreements pertaining to this offering will expire 180 days from the date of this prospectus. Our underwriters, however, may, in their sole discretion, waive the contractual lock-up prior to the expiration of the lock-up agreements. After the lock-up agreements expire, all 160,056,764 shares outstanding as July 31, 2015 will be eligible for sale in the public market, of which 109,815,640 shares are held by directors, executive officers and other affiliates and will be subject to volume limitations under Rule 144 under the Securities Act of 1933, as amended, or the Securities Act, and various vesting agreements. In addition, 59,928,620 shares of Class B common stock are subject to outstanding options as of July 31, 2015 and options to purchase an aggregate of 9,254,999 shares of Class B common stock were granted subsequent to July 31, 2015. These shares will become eligible for sale in the public market to the extent permitted by the provisions of various vesting agreements, the lock-up agreements and Rules 144 and 701 under the Securities Act. We intend to file a registration statement on Form S-8 under the Securities Act covering all of the shares of Class A and Class B common stock subject to options outstanding and reserved for issuance under our stock plans. This registration statement will become effective immediately upon filing, and shares covered by this registration statement will be eligible for sale in the public markets, subject to Rule 144 limitations applicable to affiliates and any lock-up agreements described above. If these additional shares are sold, or if it is perceived that they will be sold, in the public market, the trading price of our Class A common stock could decline.

There has been no prior market for our Class A common stock. An active market may not develop or be sustained and investors may not be able to resell their shares at or above the initial public offering price.

Our Class A common stock has been approved for listing on the New York Stock Exchange, or NYSE, under the trading symbol “PSTG.” However, we cannot assure you that an active trading market for our Class A common stock will develop on such exchange or elsewhere or, if developed, that any market will be sustained. We cannot predict the prices at which our Class A common stock will trade. The initial public offering price of our Class A common stock was determined by negotiations with the underwriters and may not bear any relationship to the market price at which our Class A common stock will trade after this offering or to any other established criteria of the value of our business.

The trading price of our Class A common stock may be highly volatile, and an active, liquid, and orderly market for our Class A common stock may not be sustained.

The trading price of our Class A common stock may be highly volatile and could be subject to wide fluctuations in response to various factors, some of which are beyond our control. Some of the factors affecting our volatility may include:

The stock markets in general, and market prices for the securities of technology-based companies like ours in particular, have from time to time experienced volatility that often has been unrelated to the operating performance of the underlying companies. A certain degree of stock price volatility can be attributed to being a newly public company. These broad market and industry fluctuations may adversely affect the market price of our Class A common stock, regardless of our operating performance. In several recent situations where the market price of a stock has been volatile, holders of that stock have instituted securities class action litigation against the company that issued the stock. If any of our stockholders were to bring a lawsuit against us, the defense and disposition of the lawsuit could be costly and divert the time and attention of our management and harm our business, operating results and financial condition.

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

The assumed initial public offering price of our Class A common stock is substantially higher than the net tangible book value per share of our Class A common stock immediately after this offering. Therefore, if you purchase our Class A common stock in this offering, you will incur an immediate dilution of $14.06 in net tangible book value per share from the price you paid, based on the assumed initial public offering price of $17.00 per share. In addition, new investors who purchase shares in this offering will have contributed approximately 42.9% of the total amount of equity capital raised by us through the date of this offering, but will only own approximately 13.5% of our outstanding shares. The exercise of outstanding options will result in further dilution. For a further description of the dilution that you will experience immediately after this offering, see the section titled “Dilution.”

If securities analysts do not publish research or reports about our business, or if they downgrade our stock, the price of our stock could decline.

The trading market for our Class A common stock will likely be influenced by research and reports that securities or industry analysts publish about us or our business. In the event securities or industry analysts cover our company and one or more of these analysts downgrade our stock or publish inaccurate or unfavorable

research about our business, our stock price would likely decline. If one or more of these analysts ceases coverage of our company or fails to publish reports on us regularly, demand for our stock could decrease, which could cause our stock price and trading volume to decline.

We have never paid dividends on our common stock and we do not anticipate paying any cash dividends in the foreseeable future.

We have never declared or paid any dividends on our common stock. We intend to retain any earnings to finance the operation and expansion of our business, and we do not anticipate paying any cash dividends in the future. As a result, you may only receive a return on your investment in our Class A common stock if the market price of our common stock increases.

We will continue to incur increased costs as a result of being a public company.

As a public company, we expect to incur significant legal, accounting and other expenses that we did not incur as a private company. In addition, new rules implemented by the SEC and NYSE require changes in corporate governance practices of public companies. We expect these rules and regulations to continue to increase our legal and financial compliance costs and to make some activities more time-consuming and costly. We will continue to incur additional costs associated with our public company reporting requirements. We expect these rules and regulations to make it more difficult and more expensive for us to obtain director and officer liability insurance, and we may be required to accept reduced policy limits and coverage or incur substantially higher costs to obtain the same or similar coverage. As a result, it may be more difficult for us to attract and retain qualified people to serve on our board of directors or as executive officers.

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

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. Additionally, we may use a portion of the net proceeds to acquire businesses, products, services or technologies. However, we do not have agreements or commitments for any specific material acquisitions at this time. 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. Until the net proceeds are used, they may be placed in investments that do not produce significant income or that may lose value.

Provisions in our amended and restated certificate of incorporation and amended and restated bylaws and under Delaware law might discourage, delay or prevent a change of control of our company or changes in our management and, therefore, depress the trading price of our Class A common stock.

Our amended and restated certificate of incorporation and amended and restated bylaws contain provisions that could depress the trading price of our Class A common stock by acting to discourage, delay or prevent a change of control of our company or changes in our management that the stockholders of our company may deem advantageous. These provisions:

Additionally, we are subject to Section 203 of the Delaware General Corporation Law, which generally prohibits a Delaware corporation from engaging in any of a broad range of business combinations with any “interested” stockholder for a period of three years following the date on which the stockholder became an “interested” stockholder and which may discourage, delay, or prevent a change of control of our company.

Any provision of our amended and restated certificate of incorporation, bylaws or Delaware law that has the effect of delaying or deterring a change in control could limit the opportunity for our stockholders to receive a premium for their shares of our common stock, and could also affect the price that some investors are willing to pay for our Class A common stock.

Our amended and restated certificate of incorporation will provide that the Court of Chancery of the State of Delaware 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.

Our amended and restated certificate of incorporation provides that the Court of Chancery of the State of Delaware is the exclusive forum for any derivative action or proceeding brought on our behalf; any action asserting a breach of fiduciary duty; any action asserting a claim against us arising pursuant to the Delaware General Corporation Law, our amended and restated certificate of incorporation or our bylaws; or any action asserting a claim against us that is governed by the internal affairs doctrine. The choice of forum provision 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, which may discourage such lawsuits against us and our directors, officers and other employees. If a court were to find the choice of forum provision contained in our amended and restated certificate of incorporation to be inapplicable or unenforceable in an action, we may incur additional costs associated with resolving such action in other jurisdictions, which could harm our business and financial condition.

This prospectus contains forward-looking statements about us and our industry that involve substantial risks and uncertainties. All statements other than statements of historical facts contained in this prospectus, including statements regarding our future results of operations and financial condition, business strategy and plans and objectives of management for future operations, are forward-looking statements. In some cases, you can identify forward-looking statements by words such as “anticipate,” “believe,” “continue,” “could,” “design,” “estimate,” “expect,” “intend,” “may,” “plan,” “potentially,” “predict,” “project,” “should,” “will” or the negative of these terms or other similar expressions.

We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our financial condition, results of operations, business strategy and financial needs. These forward-looking statements are subject to a number of known and unknown risks, uncertainties and assumptions, including risks described in the section titled “Risk Factors.” These risks are not exhaustive. Other sections of this prospectus include additional factors that could harm our business and financial performance. Moreover, we operate in a very competitive and rapidly changing environment. New risk factors emerge from time to time, and it is not possible for our management to predict all risk factors 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 from those contained in, or implied by, any forward-looking statements.

You should not rely upon forward-looking statements as predictions of future events. We cannot assure you that the events and circumstances reflected in the forward-looking statements will be achieved or occur. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, levels of activity, performance or achievements. Except as required by law, we undertake no obligation to update publicly any forward-looking statements for any reason after the date of this prospectus or 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 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 achievements may be materially different from what we expect. We qualify all of our forward-looking statements by these cautionary statements.

Unless otherwise indicated, information contained in this prospectus concerning our industry and the market in which we operate, including our general expectations and market position, market opportunity and market size, is based on information from various sources including the independent industry publications set forth below, and is subject to a number of assumptions and limitations. Although we are responsible for all of the disclosure contained in this prospectus and we believe the information from the industry publication and other third-party sources included in this prospectus is reliable, such information is inherently imprecise. The content of the below sources, except to the extent specifically set forth in this prospectus, do not constitute a portion of this prospectus and are not incorporated herein.

The industry in which we operate is subject to a high degree of uncertainty and risk due to a variety of factors, including those described in the section titled “Risk Factors” and elsewhere in this prospectus. These and other factors could cause results to differ materially from those expressed in the estimates made by the independent parties and by us.

We estimate that the net proceeds from the sale of 25,000,000 shares of Class A common stock in this offering will be approximately $395.2 million at an assumed initial public offering price of $17.00 per share, the midpoint of the price range set forth on the cover page of this prospectus, after deducting underwriting discounts and commissions and estimated offering expenses payable by us. If the underwriters exercise their over-allotment option in full, we estimate that the net proceeds will be approximately $455.1 million after deducting underwriting discounts and commissions and estimated offering expenses payable by us.

Each $1.00 increase or decrease in the assumed initial public offering price of $17.00 per share would increase or decrease, respectively, our net proceeds by $23.5 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 underwriting discounts and commissions and estimated offering expenses payable by us. We may also increase or decrease the number of shares we are offering. An increase or decrease of 1,000,000 in the number of shares we are offering would increase or decrease, respectively, the net proceeds from this offering by approximately $16.0 million, assuming the assumed initial public offering price remains the same and after deducting underwriting discounts and commissions.

The principal purposes of this offering are to increase our capitalization and financial flexibility, increase our visibility in the marketplace and create a public market for our Class A common stock. As of the date of this prospectus, we cannot specify with certainty all of the particular uses for the net proceeds to us from this offering. However, we currently intend to use the net proceeds from this offering primarily for general corporate purposes, including expansion of our product development and sales and marketing organizations. We may also use a portion of the net proceeds from this offering for the acquisition of, or investment in, technologies, solutions or businesses that complement our business, although we have no commitments or agreements to enter into any such acquisitions or investments at this time. Accordingly, we will have broad discretion over the uses of the net proceeds from this offering. Pending these uses, we intend to invest the net proceeds from this offering in short-term, investment-grade interest-bearing securities such as money market funds, certificates of deposit, commercial paper and guaranteed obligations of the U.S. government.

We have never declared or paid cash dividends on our capital stock. We intend to retain all available funds and future earnings, if any, to fund the development and expansion of our business and we do not anticipate paying any cash dividends in the foreseeable future. The terms of our outstanding loan and security agreement also restrict our ability to pay dividends, and we may also enter into credit agreements or other borrowing arrangements in the future that will restrict our ability to declare or pay cash dividends on our common stock. Any future determination related to dividend policy will be made at the discretion of our board of directors and will be dependent on a number of factors, including our earnings, capital requirements and overall financial conditions.

The following table sets forth our cash and cash equivalents and capitalization as of July 31, 2015 on:

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

If you invest in our Class A common stock in this offering, your interest will be diluted to the extent of the difference between the 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 common stock immediately after the closing of this offering.

Our pro forma net tangible book value of our common stock as of July 31, 2015 was $148.3 million, or $0.93 per share, based on the total number of shares of our common stock outstanding as of July 31, 2015. Pro forma net tangible book value per share represents our total tangible assets less our total liabilities, divided by the number of outstanding shares of Class A and Class B common stock, after giving effect to the conversion of all outstanding shares of preferred stock into 122,280,679 shares of Class B common stock immediately upon the closing of this offering.

After giving effect to the receipt of the net proceeds from our sale of 25,000,000 shares of Class A common stock in this offering at an assumed initial public offering price of $17.00 per share, the midpoint of the price range set forth on the cover page of this prospectus, after deducting underwriting discounts and commissions and estimated offering expenses payable by us, our pro forma as adjusted net tangible book value as of July 31, 2015, would have been $543.5 million, or $2.94 per share. This represents an immediate increase in pro forma as adjusted net tangible book value of $2.01 per share to our existing stockholders and an immediate dilution of $14.06 per share to investors purchasing Class A common stock in this offering.

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

Each $1.00 increase (decrease) in the assumed initial public offering price of $17.00 would increase (decrease) our pro forma as adjusted net tangible book value per share after this offering by $0.13 per share and the dilution to new investors by $0.87 per share, assuming the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and after deducting underwriting discounts and commissions and estimated offering expenses payable by us. Similarly, each increase (decrease) of 1,000,000 shares in the number of shares of Class A common stock offered by us would increase (decrease) the pro forma as adjusted net tangible book value by $0.07 and $(0.07), respectively, per share and the dilution to new investors by $(0.07) and $0.07, respectively, per share, assuming the assumed initial public offering price remains the same and after deducting underwriting discounts and commissions.

If the underwriters’ option to purchase additional shares to cover over-allotments is exercised in full, the pro forma as adjusted net tangible book value per share after giving effect to this offering would be $3.20 per share, representing an immediate increase to existing stockholders of $2.27 per share, and immediate dilution to new investors in this offering of $13.80 per share.

The following table summarizes, as of July 31, 2015, on the pro forma as adjusted basis described above:

The total number of shares of our common stock reflected in the discussion and tables above is based on no shares of Class A common stock and 160,056,764 shares of Class B common stock outstanding, as of July 31, 2015, and excludes:

A $1.00 increase (decrease) in the assumed initial public offering price of $17.00 per share would increase (decrease) total consideration paid by new investors by $25.0 million and increase (decrease) the total consideration paid to us by new investors by 1.4% and (1.5%), respectively, assuming the number of shares offered by us, as set forth on the cover page of this prospectus, remains the same and before deducting underwriting discounts and commissions and estimated offering expenses payable by us.

To the extent that any outstanding options are exercised, new options are issued under our stock-based compensation plans or we issue additional shares of common stock in the future, there will be further dilution to investors participating in this offering. If all outstanding options under our 2009 Equity Incentive Plan as of July 31, 2015 were exercised, then our existing stockholders, including the holders of these options, would own 89.8% and our new investors would own 10.2% of the total number of shares of common stock outstanding upon the closing of this offering.

The selected consolidated statements of operations data for the fiscal years ended January 31, 2014 and 2015 and the consolidated balance sheet data as of January 31, 2014 and 2015 are derived from our audited consolidated financial statements included elsewhere in this prospectus. The selected consolidated statements of operations data for the fiscal year ended January 31, 2013 and the consolidated balance sheet data as of January 31, 2013 are derived from our unaudited consolidated financial statements not included in this prospectus. The selected consolidated statements of operations data for the six months ended July 31, 2014 and 2015 and the consolidated balance sheet data as of July 31, 2015 are derived from our unaudited consolidated financial statements included elsewhere in this prospectus. The unaudited consolidated financial statements were prepared on a basis consistent with our audited financial statements. Our historical results are not necessarily indicative of the results that may be expected in any future period and our results for the six months ended July 31, 2015 are not necessarily indicative of the results that may be expected for the full fiscal year. The selected consolidated financial data below should be read in conjunction with the section entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and our consolidated financial statements and related notes included elsewhere in this prospectus.

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with the section titled “Selected Consolidated Financial Data” and our consolidated financial statements and related notes included elsewhere in this prospectus. This discussion contains forward-looking statements that involve risks and uncertainties. Our actual results could differ materially from those discussed below. Factors that could cause or contribute to such differences include, but are not limited to, those identified below and those discussed in the section titled “Risk Factors” included elsewhere in this prospectus. Our fiscal year end is January 31.

Our next-generation storage platform and business model are the result of our team’s substantial experience in enterprise storage and web-scale infrastructure, as well as frustration with the industry’s status quo. Our platform can deliver a 10X acceleration in business applications over legacy disk-based storage. It is also designed to be compatible with existing infrastructure, substantially more reliable and power and space efficient.

We were incorporated in 2009 with a vision to define the next generation of enterprise storage by pioneering the all-flash array category and innovating a customer-centric business model. We deliver our three-part integrated platform as the Purity Operating Environment, our flash-optimized software, FlashArray, our modular and scalable all-flash array hardware, and Pure1, our cloud-based management and support. Since inception we have consistently expanded our technology and business model:

Since launching FlashArray in May 2012, our customer base has grown to over 1,100 customers. Our customers include large and mid-size organizations across a diverse set of industry verticals, including cloud-based software and service providers, consumer web, education, energy, financial services, governments, healthcare, manufacturing, media, retail and telecommunications. We define a customer as an end user that purchases our products and services either from one of our channel partners or from us directly. No customer represented over 10% of revenue for the fiscal years ended January 31, 2014 and 2015, and the six months ended July 31, 2014 and 2015.

We have experienced significant growth, with revenue increasing from $6.1 million for the fiscal year ended January 31, 2013 to $42.7 million for the fiscal year ended January 31, 2014 and to $174.5 million for the fiscal year ended January 31, 2015, representing year-over-year revenue growth of 603% and 308% for our two most recent fiscal years. Our revenue increased from $59.4 million for the six months ended July 31, 2014 to $158.7 million for the six months ended July 31, 2015, representing period-over-period growth of 167% for our most recent interim period. Our net loss was $23.4 million, $78.6 million, and $183.2 million, respectively, for the fiscal years ended January 31, 2013, 2014 and 2015 and $95.2 million and $113.0 million for the six months ended July 31, 2014 and 2015, respectively.

Since our founding, we have invested heavily in growing our business. Our headcount increased from approximately 100 employees as of January 31, 2013 to over 350 employees as of January 31, 2014 to over 800 employees as of January 31, 2015 and to over 1,100 employees as of July 31, 2015. We intend to continue to invest in our research and development organization to extend our technology leadership, enhance the functionality of our existing storage platform and introduce new products. By investing in research and development, we believe we will be well positioned to continue our rapid growth and take advantage of our large market opportunity. Our investments in research and development may result in enhancements or products that may not achieve adequate levels of market adoption, are more expensive to develop than anticipated, may take longer to generate revenue or may generate less revenue than we anticipate. We expect that our results of operations and cash flows will be impacted by the timing, size and level of success of these product development investments.

We also intend to continue to invest and expand our sales and marketing functions and channel programs, including expanding our global network of channel partners and carrying out associated marketing activities in key geographies. By investing in sales and technical training, demand generation and partner programs, we believe we can enable many of our partners to independently identify, qualify, sell and upgrade customers, with limited involvement from us. However, if we fail to effectively identify, train and manage our channel partners and to monitor their sales activity, as well as the customer support and services being provided to our customers in their local markets, our business, operating results, financial condition and cash flows could be harmed.

In addition, we intend to expand and continue to invest in our international operations, which we believe will be an important factor in our continued growth. However, even though our revenue generated from customers outside of the United States was 23% and 22% of our total revenue for the fiscal year ended January 31, 2015 and for the six months ended July 31, 2015, respectively, our international operations are relatively new and we have limited experience operating in foreign jurisdictions. Our inexperience in operating our business outside of the United States increases the risk that our international expansion efforts may not be successful.

As a result of our strategy to increase our investments in research and development, sales, marketing, support and international expansion, we expect to continue to incur operating losses and negative cash flows from operations at least in the near future and may require additional capital resources to execute strategic initiatives to grow our business.

Currently, we sell our platform predominantly through a high touch, channel-fulfilled model. Our global sales force works collaboratively with our channel partners. Our channel partners typically place orders with us upon receiving an order from a customer and do not stock inventory. Our sales organization is supported by systems engineers with deep technical expertise and responsibility for pre-sales technical support and engineering for our customers. We support our channel partners through product education and sales and support training. We intend to continue to invest in the channel to add more partners and to expand our reach to customers through our channel partners’ relationships. No channel partner represented over 10% of revenue for the fiscal years ended January 31, 2014 and 2015, and the six months ended July 31, 2014 and 2015.

Our business model enables customers to broadly adopt flash for a wide variety of workloads in their datacenter, with some of our most innovative customers adopting all-flash datacenters. We do not charge separately for software, meaning that when a customer buys a FlashArray, all software functionality of the Purity Operating Environment is included in the base purchase price, and the customer is entitled to updates and new features as long as the customer maintains an active maintenance and support agreement. Product revenue is recognized at the time title and risk of loss have transferred. Support revenue is recognized ratably over the term of the related maintenance and support agreement, generally ranging from 1 to 3 years. By keeping our business model simple and efficient, we allow customers to buy more products and expand their footprint more easily while allowing us to reduce our sales and marketing costs.

To deliver on the next level of operational simplicity and support excellence, we designed Pure1, our integrated cloud-based management and support. Pure1 enables our customers, support staff and partners to collaborate to achieve the best customer experience and is included with an active maintenance and support agreement. In addition, our Forever Flash program provides our customers who continually maintain active maintenance and support for three years with an included controller refresh with each additional three year maintenance and support renewal. In this way, our customers improve and extend the service life of their arrays, we reduce our cost of support by keeping the array modern and we encourage capacity expansion. In accordance with multiple-element arrangement accounting guidance, we recognize the allocated revenue of the controllers and expense the related cost in the period in which we ship these controllers.

The combination of our high-performance, all-flash products, our exceptional support and our innovative business model has had a substantial impact on customer success and loyalty and are strong drivers of both initial purchase and additional purchases of our products. As of July 31, 2015, more than half of our customers had made additional purchases within 12 months of their initial purchase. For all customers that have been with us for at least 12 months as of July 31, 2015, for every $1 of initial product purchase, our top 25 customers on average spent $5.50 on new product purchases in the first 12 months following their initial purchase and on average spent more than $8 on new product purchases in the first 18 months following their initial purchase. Across all customers that have been with us for at least 12 months as of July 31, 2015, for every $1 of initial product purchase, our customers on average spent more than $1 on new product purchases in the first 12 months following their initial purchase.

Organizations are increasingly replacing traditional disk-based systems with all-flash storage systems to achieve the performance they need. Our success depends on the adoption of all-flash storage systems in IT infrastructures. Although flash is expected to penetrate the datacenter at a rapid rate, a lack of demand for all-flash storage systems for any reason, including technological challenges associated with the use of all-flash memory, the cost or availability of all-flash memory or the adoption of competing technologies and products, would adversely affect our growth prospects. To the extent more organizations recognize the benefits of all-flash memory in datacenter storage systems and as the adoption of all-flash memory storage technology increases, our target customer base will expand. Our business and results of operations will be significantly affected by the speed with which organizations implement all-flash storage systems.

We believe that the all-flash storage market is still in the early stages of adoption. We intend to target new customers by continuing to invest in our field sales force and extending our relationships with channel partners. We also intend to continue to target large customers including enterprises, service providers and government organizations who have yet to adopt all-flash storage throughout their IT environment. A typical initial order

involves educating prospective customers about the technical merits and capabilities and potential cost savings of our products as compared to our competitors’ products. We believe that customer references have been, and will continue to be, an important factor in winning new business. The average size of arrays deployed by our customers has increased over time. We expect this trend to continue and that a substantial portion of our future sales will be sales to existing customers, including expansion of their arrays. We sell additional products and services to our customers as the data within their existing application deployments naturally grows and they migrate additional applications to our all-flash storage platform. Our business and results of operations will depend on our ability to continue to add new customers and sell additional products to our growing base of customers.

We sell our products predominantly through a channel-fulfilled model. Our sales force supports our channel partners and is responsible for large account penetration, global account coordination and overall market development. Our channel partners help market and sell our products, typically with assistance from our sales force. This joint sales approach provides us with the benefit of direct relationships with substantially all of our customers and expands our reach through the relationships of our channel partners. We intend to continue to expand our partner relationships to further extend our distribution coverage and to invest in education, training and programs to increase the ability of our channel partners to sell our products independently. Our business and results of operations will be materially affected by our success in leveraging our channel partners.

Our future performance will also depend on our ability to continue to innovate, improve functionality in our products and adapt to new technologies or changes to existing technologies. We intend to continue to invest for long-term growth. Accordingly, we expect to continue to invest heavily in our product development efforts, including software development in the Purity Operating Environment and Pure1 to further expand the capabilities and performance of our storage platform, hardware development in our FlashArray and future hardware platforms, and to introduce new products including new releases and upgrades to our software and hardware. We expect that our results of operations will be impacted by the timing, size and level of success of these product development investments.

We derive revenue from the sale of our storage products and support services. Provided that all other revenue recognition criteria have been met, we typically recognize product revenue upon shipment, as title and risk of loss are transferred to our channel partners at that time. Products are typically shipped directly by us to customers, and our channel partners do not stock our inventory. We expect our product revenue may vary from period to period based on, among other things, the timing and size of orders and delivery of products and the impact of significant transactions.

We provide our support services pursuant to maintenance and support agreements, which involve customer support, hardware maintenance and software upgrades for a period of generally 1 to 3 years. We recognize revenue from maintenance and support agreements over the contractual service period. We expect our support revenue to increase as we add new customers and our existing customers renew maintenance and support agreements.

Cost of product revenue primarily consists of costs paid to our third-party contract manufacturers, which includes the costs of our components, and personnel costs associated with our manufacturing operations. Personnel costs consist of salaries, bonuses and stock-based compensation. Our cost of product revenue also

includes freight, allocated overhead costs and inventory write-offs. Allocated overhead costs consist of certain facilities and IT costs. We expect our cost of product revenue to increase in absolute dollars as our product revenue increases.

Cost of support revenue includes personnel costs associated with our customer support organization and allocated overhead costs. Cost of support revenue also includes parts replacement costs. We expect our cost of support revenue to increase in absolute dollars as our support revenue increases.

Our operating expenses consist of research and development, sales and marketing and general and administrative expenses. Salaries and personnel-related costs, including stock-based compensation, are the most significant component of each category of operating expenses. Operating expenses also include allocated overhead costs for facilities and IT costs.

Research and Development. Research and development expense consists primarily of employee compensation and related expenses, prototype expenses, depreciation associated with assets acquired for research and development, third-party engineering and contractor support costs, as well as allocated overhead. We expect our research and development expense to increase in absolute dollars, as we continue to invest in new products and existing products and build upon our technology leadership.

Sales and Marketing. Sales and marketing expense consists primarily of employee compensation and related expenses, sales commissions, marketing programs, travel and entertainment expenses, as well as allocated overhead. Marketing programs consist of advertising, events, corporate communications and brand-building activities. We expect our sales and marketing expense to increase in absolute dollars over time as we expand our sales force and increase our marketing resources, expand into new markets and further develop our channel program.

General and Administrative. General and administrative expense consists primarily of compensation and related expenses for administrative functions including finance, legal, human resources and fees for third-party professional services, as well as allocated overhead. We expect our general and administrative expense to increase in absolute dollars as we incur additional costs related to operating as a publicly-traded company and continue to invest in the growth of our business.

Other income (expense), net consists primarily of gains and losses from foreign currency transactions and other income (expense).

Provision for income taxes consists primarily of income taxes in certain foreign jurisdictions in which we conduct business and state income taxes in the United States. We have recorded no U.S. federal income tax and provided a full valuation allowance for U.S. deferred tax assets, which includes net operating loss, or NOL, carryforwards and tax credits related primarily to research and development. We expect to maintain this full valuation allowance for the foreseeable future as it is more likely than not that the assets will not be realized based on our history of losses.

The following tables set forth our results of operations for the periods presented in dollars and as a percentage of our revenue (in thousands):

Total revenue increased by $99.3 million, or 167%, during the six months ended July 31, 2015 compared to the six months ended July 31, 2014. The increase in product revenue was driven by higher sales to a growing number of new and existing customers. The number of customers grew from over 450 as of July 31, 2014 to over 1,100 as of July 31, 2015. The increase in support revenue was driven primarily by an increase in maintenance and support agreements sold with increased product sales, as well as increased recognition of deferred support revenue.

Cost of revenue increased by $37.2 million, or 135%, for the six months ended July 31, 2015 compared to the six months ended July 31, 2014. The increase in product cost of revenue was primarily driven by increased product sales and, to a lesser extent, by the increased costs in our manufacturing operations, including increased personnel costs associated with increased headcount. The increase in support cost of revenue was primarily attributable to higher costs in our customer support organization primarily driven by personnel costs associated with increased headcount and an increase in parts replacement in support of our maintenance and support agreements. Total headcount in these functions increased 165% from July 31, 2014 to July 31, 2015.

Total gross margin increased from 54% during the six months ended July 31, 2014 to 59% during the six months ended July 31, 2015. Product gross margin increased 5 points from the six months ended July 31, 2014 to the six months ended July 31, 2015, primarily driven by a shift in the mix of products sold to our customers, as well as higher sales volume and lower average component costs. Support gross margin increased 20 points from the six months ended July 30, 2014 to the six months ended July 31, 2015 primarily due to increased recognition of deferred support revenue resulting from the increase in our customer base, as well as operational efficiencies.

Research and development expense increased by $29.3 million, or 72%, during the six months ended July 31, 2015 compared to the six months ended July 31, 2014, as we continued to develop new and enhanced product offerings. The increase was primarily driven by an increase of $19.7 million in salary and related costs, as headcount increased by 108% from July 31, 2014 to July 31, 2015. The remainder of the increase was primarily attributable to $6.0 million in depreciation expense on test equipment, $4.1 million in prototype expenses and $1.9 million in professional services. These increases were partially offset by a decrease of $4.7 million in stock-based compensation expense. The decrease in stock-based compensation expense was due to additional expense of $9.5 million recognized for the repurchase of common stock in connection with a tender offer during the six months ended July 31, 2014. There was no similar repurchase during the six months ended July 31, 2015.

Sales and marketing expense increased by $36.3 million, or 51%, during the six months ended July 31, 2015 compared to the six months ended July 31, 2014, as we grew our sales force and expanded our geographic footprint. The increase was primarily driven by an increase of $19.1 million in salary and related costs, an increase of $7.1 million in commission expense, as headcount increased by 67% from July 31, 2014 to July 31, 2015. The remainder of the increase was primarily attributable to $8.3 million in marketing programs partly related to a new product launch, $4.9 million in professional services and $3.6 million in travel and entertainment expense. These increases were partially offset by a decrease of $11.4 million in stock-based compensation expense. The decrease in stock-based compensation expense was due to additional expense of $13.9 million recognized for the repurchase of common stock in connection with a tender offer during the six months ended July 31, 2014. There was no similar repurchase during the six months ended July 31, 2015.

General and administrative expense increased by $13.5 million, by 94%, during the six months ended July 31, 2015 compared to the six months ended July 31, 2014. The increase was primarily due to an increase of $3.2 million in salary and related costs, as we increased our headcount by 153% from July 31, 2014 to July 31, 2015. Additionally, legal, consulting, accounting and audit fees increased by $9.7 million as we expanded internationally and prepared to become a public company. These increases were partially offset by a decrease of $1.2 million in stock-based compensation expense. The decrease in stock-based compensation expense was due to additional expense of $3.4 million recognized for the repurchase of common stock in connection with a tender offer during the six months ended July 31, 2014. There was no similar repurchase during the six months ended July 31, 2015.

In September 2015, we issued 700,000 shares of Class B common stock to the Pure Good Foundation. As a result, we expect to incur a non-cash general and administrative expense in the three months ending October 31, 2015 equal to the fair value of the shares of Class B common stock issued to the Pure Good Foundation.

Other income (expense), net decreased during the six months ended July 31, 2015 compared to the six months ended July 31, 2014 primarily due to an increase in foreign currency transactions and related expenses as we expanded internationally.

The provision for income taxes was primarily related to foreign taxes as we continued our global expansion.

Total revenue increased by $131.7 million, or 308%, during the fiscal year ended January 31, 2015 compared to the fiscal year ended January 31, 2014. The increase in product revenue was driven by higher sales to a growing number of customers. The number of customers grew from approximately 200 as of January 31, 2014 to over 700 as of January 31, 2015. The increase in support revenue was driven primarily by an increase in maintenance and support agreements sold with higher product sales, as well as the full year revenue impact from such agreements sold in the previous year.

Cost of revenue increased by $53.4 million, or 221%, for the fiscal year ended January 31, 2015 compared to the fiscal year ended January 31, 2014. The increase in product cost of revenue was primarily driven by increased product sales and, to a lesser extent, by the increased costs in our manufacturing operations, including increased personnel costs associated with increased headcount. The increase in support cost of revenue was primarily attributable to higher costs in our customer support organization primarily driven by personnel costs associated with increased headcount and an increase in parts replacement in support of our maintenance and support agreements. Total headcount in these functions increased 176% from January 31, 2014 to January 31, 2015.

Total gross margin increased from 43% during the fiscal year ended January 31, 2014 to 56% during the fiscal year ended January 31, 2015. Product gross margin increased 10 points from the fiscal year ended January 31, 2014 to the fiscal year ended January 31, 2015, primarily driven by higher sales volume and lower average component costs. Support gross margin increased 47 points from the fiscal year ended January 31, 2014 to the fiscal year ended January 31, 2015 primarily due to increased recognition of deferred support revenue resulting from the increase in our customer base as well as operational efficiencies.

Research and development expense increased by $56.6 million, or 157%, during the fiscal year ended January 31, 2015 compared to the fiscal year ended January 31, 2014, as we continued to develop new and enhanced product offerings. The increase was primarily driven by an increase of $33.0 million in employee and related costs, including an increase of $11.0 million in stock-based compensation expense, as we increased our headcount by 115% from January 31, 2014 to January 31, 2015. The remainder of the increase was primarily attributable to $9.7 million in prototype expenses, $6.6 million in depreciation expense on test equipment and $3.6 million in professional services.

Sales and marketing expense increased by $97.6 million, or 178%, during the fiscal year ended January 31, 2015 compared to the fiscal year ended January 31, 2014, as we grew our sales force and expanded our geographic footprint. The increase was primarily driven by an increase of $69.5 million in employee and related costs, including an increase of $16.7 million in commission expense and an increase of $13.5 million in stock-based compensation expense, as we increased our headcount by 115% from January 31, 2014 to January 31, 2015. The remainder of the increase was primarily attributable to $10.6 million in marketing programs, $6.2 million in travel and entertainment expense, $6.2 million in allocated overhead costs for facilities and $3.3 million in professional services.

General and administrative expense increased by $26.5 million, or 448%, during the fiscal year ended January 31, 2015 compared to the fiscal year ended January 31, 2014. The increase was primarily due to an increase of $12.2 million in employee and related costs, including an increase of $6.0 million in stock-based compensation expense, as we increased our headcount by 188% from January 31, 2014 to January 31, 2015.

Additionally, legal, consulting, accounting and audit fees increased by $9.7 million as we expanded internationally and prepared to become a public company. The remainder of the increase was primarily attributable to an increase of $2.9 million in allocated overhead costs for facilities.

Other income (expense), net decreased during the fiscal year ended January 31, 2015 compared to the fiscal year ended January 31, 2014 primarily due to an increase in foreign currency transactions and related expenses.

The provision for income taxes increased during the fiscal year ended January 31, 2015 compared to the fiscal year ended January 31, 2014 primarily due to an increase in foreign taxes as we continued our global expansion.

The following tables summarize our selected unaudited quarterly consolidated statements of operations data for each of the six quarters in the period ended July 31, 2015. The information for each of these quarters has been prepared on a basis consistent with our audited annual financial statements and, in the opinion of management, includes all adjustments of a normal, recurring nature that are necessary for the fair presentation of the results of operations for these periods in accordance with generally accepted accounting principles in the United States. This data should be read in conjunction with our audited consolidated financial statements included elsewhere in this prospectus. Our historical results are not necessarily indicative of the results that may be expected in the future and our results for the three months ended July 31, 2015 are not necessarily indicative of the results that may be expected for the full fiscal year.


Cost of revenue—product	$	73	$	156	$	35	$	39	$	56	$	40
Cost of revenue—support		86		812		159		216		333		521
Research and development		2,432		12,715		3,399		3,966		3,625		6,804
Sales and marketing		1,436		15,925		2,315		2,790		3,444		2,536
General and administrative		424		4,084		823		1,148		1,401		1,899

Total stock-based compensation expense	$	4,451	$	33,692	$	6,731	$	8,159	$	8,859	$	11,800

Stock-based compensation expense for the three months ended July 31, 2014 included $27.6 million of cash paid for the repurchase of common stock in excess of fair value. See Note 9 to our consolidated financial statements for additional information.

Our quarterly revenue increased sequentially for all periods presented due primarily to higher sales reflecting increased demand for our products and related support services. The sequential growth in product revenue was driven primarily by higher sales of our storage products to new and existing customers. The sequential growth in support revenue was primarily driven by a higher number of maintenance and support agreements sold with increased product sales, as well as increased recognition of deferred support revenue. We expect to experience seasonal fluctuations in our revenue from time to time with the fourth quarter historically being our strongest quarter for sales as a result of large enterprise buying patterns.

Gross profit in absolute dollar terms increased sequentially for all periods presented, primarily due to growth in revenue. Sequential fluctuations in gross margin was primarily driven by a shift in the mix of products sold to our customers, as well as timing of employee hiring as we continued to build out our customer support organization. During the three months ended July 31, 2014, cost of revenue included stock-based compensation expense of $855,000 related to the repurchase of common stock from employees in a tender offer.

Total operating expenses generally increased sequentially for all periods presented primarily due to the addition of personnel in connection with the expansion of our business. Sales and marketing expense increased from the three months ended April 30, 2015 to the three months ended July 31, 2015 primarily due to expenditures on marketing programs related to the launch of FlashArray//m. During the three months ended July 31, 2014, total operating expenses included stock-based compensation expense of $26.8 million related to the repurchase of common stock from employees in a tender offer, of which $9.5 million, $13.9 million, and

$3.4 million were allocated to research and development, sales and marketing, general and administrative expenses, respectively.

As of July 31, 2015, we had cash and cash equivalents of $128.3 million. Our cash and cash equivalents primarily consist of bank deposits and money market funds. We have generated significant operating losses and negative cash flows from operations as reflected in our accumulated deficit of $454.5 million. We expect to continue to incur operating losses and negative cash flows from operations at least in the near future and may require additional capital resources to execute strategic initiatives to grow our business.

To date, we have financed our operations principally through private placements of our convertible preferred stock. Through July 31, 2015, we have received net proceeds of $543.9 million from the issuance of shares of our convertible preferred stock and we have repurchased $78.2 million of shares of common stock from our employees. We believe our existing cash and cash equivalents, our credit facility and cash provided by this offering will be sufficient to fund our operating and capital needs for at least the next 12 months. Our future capital requirements will depend on many factors including our growth rate, the timing and extent of spending to support development efforts, the expansion of sales and marketing and international operation activities, the timing of new product introductions and the continuing market acceptance of our products and services. We may in the future enter into arrangements to acquire or invest in complementary businesses, services and technologies, including intellectual property rights. We may be required to seek additional equity or debt financing. In the event that additional financing is required from outside sources, we may not be able to raise it on terms acceptable to us or at all. If we are unable to raise additional capital when desired, our business, operating results and financial condition would be adversely affected.

In August 2014, we entered into a two-year revolving line of credit facility to provide up to $15.0 million based on 80% of qualifying accounts receivable. Borrowings under the line of credit bear interest at the lender’s prime rate plus 1%. The revolving line of credit facility is collateralized by substantially all of our assets, excluding any intellectual property. It also contains various covenants, including covenants related to the delivery of financial and other information, as well as limitations on dispositions, mergers, consolidations and other corporate activities. As of January 31, 2015 and July 31, 2015, we had no borrowings from this line of credit and we were in compliance with all financial covenants.

In September 2015, we entered into a non-binding engagement letter with Silicon Valley Bank for a credit facility pursuant to which Silicon Valley Bank would serve as the lead arranger of a syndicate of banks. Affiliates of Morgan Stanley & Co. LLC, Goldman, Sachs & Co. and Barclays Capital Inc. may participate in such syndicate. The engagement letter contemplates a credit facility of between $50.0 million and $125.0 million and would be collateralized by substantially all of our assets. The credit facility is expected to contain customary financial and operational covenants.

As of January 31, 2015 and July 31, 2015, we had letters of credit in the aggregate amount of $4.6 million and $4.6 million, respectively, in connection with our headquarter facility lease. The letters of credit are collateralized by restricted cash in the same amount and mature at various dates through January 2021.

Net cash used in operating activities during the six months ended July 31, 2015 was $44.5 million, which resulted from a net loss of $113.0 million, partially offset by non-cash charges of $20.7 million for stock-based compensation expense and $14.3 million for depreciation and amortization and net cash inflows of $33.5 million from changes in operating assets and liabilities. The net cash inflows from changes in operating assets and liabilities was primarily the result of a $49.8 million increase in deferred revenue and a $13.9 million increase in accrued compensation and other liabilities and accounts payable. The inflows were partially offset by a $21.0 million increase in accounts receivable, $4.9 million increase in deferred commissions and $2.6 million increase in prepaid expenses and other assets. The increase in deferred revenue was primarily due to new sales order growth during the six months ended July 31, 2015. The increases in accounts receivable, accrued compensation and other liabilities and accounts payable were primarily attributed to revenue growth and increased activities to support overall business growth.

Net cash used in operating activities during the six months ended July 31, 2014 was $83.0 million, which resulted from a net loss of $95.2 million, partially offset by non-cash charges of $10.5 million for stock-based compensation expense, $5.4 million for depreciation and amortization and net cash outflows of $3.7 million from changes in operating assets and liabilities. The net cash outflows from changes in operating assets and liabilities was primarily the result of increases of $19.5 million in accounts receivable and $9.3 million in inventory, as well as an increase of $2.1 million in deferred commissions, partially offset by an increase of $21.2 million in deferred revenue and an increase of $7.4 million in accrued compensation and other liabilities and accounts payable. The increases in accounts receivable, deferred commissions and deferred revenue were primarily due to revenue and new sales order growth during the year. The increase in inventory was a result of increased purchases to meet higher demand for our products. Net cash used in operating activities also included $27.6 million of cash paid for the repurchase of common stock from our employees in excess of fair value.

Net cash used in operating activities during the fiscal year ended January 31, 2015 was $143.7 million, which resulted from a net loss of $183.2 million and net cash outflows of $1.5 million from changes in operating assets and liabilities, partially offset by non-cash charges of $25.4 million for stock-based compensation and $15.4 million for depreciation and amortization. The net cash outflows from changes in operating assets and liabilities was primarily the result of increases of $44.2 million in accounts receivable, $13.7 million in inventory, $9.8 million in deferred commissions and $6.6 million in prepaid expenses and other assets, partially offset by increases of $56.8 million in deferred revenue and $15.9 million in accrued compensation and other liabilities and accounts payable. The increase in accounts receivable, deferred revenue and deferred commissions was primarily due to revenue and new sales order growth during the year. The increase in inventory, accrued compensation and other liabilities and accounts payable was primarily attributed to increased activities to support overall business growth. Net cash used in operating activities also included $27.6 million of cash paid for the repurchase of common stock from our employees in excess of fair value.

Net cash used in operating activities during the fiscal year ended January 31, 2014 was $67.2 million, which resulted from a net loss of $78.6 million and net cash outflows of $1.5 million from changes in operating assets and liabilities, partially offset by non-cash charges of $8.3 million for stock-based compensation and $4.4 million for depreciation and amortization. The net cash outflows from changes in operating assets and liabilities was primarily the result of increases of $12.0 million in accounts receivable, $7.1 million in deferred commissions, $5.1 million in inventory and $4.4 million in prepaid expenses and other assets, partially offset by increases of $15.1 million in deferred revenue and $12.0 million in accrued compensation and other liabilities and accounts payable. The increase in accounts receivable, deferred revenue and deferred commissions was primarily due to revenue and new sales order growth during the year. The increase in inventory, accrued compensation and other liabilities and accounts payable was primarily attributed to increased activities to support overall business growth. Net cash used in operating activities also included $13.3 million of cash paid for the repurchase of common stock from our employees in excess of fair value.

Net cash used in investing activities during the six months ended July 31, 2015 of $21.8 million resulted from capital expenditures.

Net cash used in investing activities during the six months ended July 31, 2014 of $28.9 million resulted from capital expenditures of $19.2 million, purchases of intangible assets of $8.0 million and a $1.6 million increase in restricted cash related to a security deposit for new office space.

Net cash used in investing activities during the fiscal year ended January 31, 2015 of $53.0 million resulted from capital expenditures of $42.2 million, purchases of intangible assets of $9.1 million and $1.6 million increase in restricted cash related to a security deposit for new office space.

Net cash used in investing activities during the fiscal year ended January 31, 2014 of $15.3 million resulted from $12.3 million of capital expenditures and $3.0 million of restricted cash related to a security deposit for new office space.

Net cash provided by financing activities of $1.9 million during the six months ended July 31, 2015 was primarily due to $3.0 million of proceeds from the exercise of stock options, which was partially offset by payments of deferred offering costs of $1.1 million.

Net cash provided by financing activities of $255.5 million during the six months ended July 31, 2014 was primarily due to $280.7 million in proceeds primarily from the issuances of our Series F convertible preferred stock and $5.0 million of proceeds from the exercise of stock options. These increases were partially offset by $30.1 million of repurchases of common stock from our employees.

Net cash provided by financing activities of $258.5 million during the fiscal year ended January 31, 2015 was primarily due to $281.0 million in net proceeds from the issuances of our Series E, Series F and Series F-1 convertible preferred stock and $7.7 million of proceeds from the exercise of stock options including proceeds from repayment of promissory notes, partially offset by $30.1 million of repurchases of common stock from our employees.

Net cash provided by financing activities of $163.3 million during the fiscal year ended January 31, 2014 was primarily due to $167.8 million in net proceeds from the issuance of our Series E convertible preferred stock and $2.7 million of proceeds from the exercise of stock options, partially offset by $7.2 million repurchase of common stock from our employees.

The following table summarizes our non-cancellable contractual obligations as of January 31, 2015.

Purchase orders are not included in the table above. Our purchase orders represent authorizations to purchase rather than binding agreements. The contractual commitment amounts in the table above are associated

with agreements that are enforceable and legally binding. Obligations under contracts that we can cancel without a significant penalty are not included in the table above.

During the six months ended July 31, 2015, we entered into a non-cancelable contract of $1.1 million related to certain software services payable through 2018.

In August 2015, we entered into certain lease agreements for office facilities with total lease obligations of approximately $19.7 million with lease periods expiring through 2023. In connection with these leases, we are required to maintain letters of credit of up to $3.3 million.

During the fiscal years ended January 31, 2014 and 2015 and the six months ended July 31, 2015, we did not have any relationships with any entities or financial partnerships, such as structured finance or special purpose entities established for the purpose of facilitating off-balance sheet arrangements or other purposes.

As of January 31, 2015, we had U.S. federal and state NOL carryforwards of $300.0 million and $308.4 million that expire commencing in 2029. Under Section 382 of the U.S. Internal Revenue Code of 1986, or the Code, a corporation that undergoes an “ownership change” is subject to limitations on its ability to utilize its pre-change NOLs to offset future taxable income. In December 2014, we completed an analysis through July 2014 to evaluate whether there are any limitations of our NOLs and concluded no limitations currently exist. While we do not believe that we have experienced, or will experience in connection with this offering, an ownership change that would result in limitations, regulatory changes, such as suspension on the use of NOLs, could result in the expiration of our NOLs or otherwise cause them to be unavailable to offset future income tax liabilities.

We have operations both within the United States and internationally, and we are exposed to market risk in the ordinary course of our business.

Our cash and cash equivalents primarily consist of bank deposits and money market funds. As of January 31, 2015 and July 31, 2015, we had cash and cash equivalents of $192.7 million and $128.3 million. The carrying amount of our cash equivalents reasonably approximates fair value, due to the short maturities of these instruments. The primary objectives of our investment activities are the preservation of capital, the fulfillment of liquidity needs and the fiduciary control of cash and investments. We do not enter into investments for trading or speculative purposes. Our investments are exposed to market risk due to a fluctuation in interest rates, which may affect our interest income and the fair market value of our investments. However, due to the short-term nature of our investment portfolio, we do not believe an immediate 10% increase or decrease in interest rates would have a material effect on the fair market value of our portfolio. We therefore do not expect our operating results or cash flows to be materially affected by a sudden change in market interest rates.

Our sales contracts are primarily denominated in U.S. dollars with a small number of contracts denominated in foreign currencies. A portion of our operating expenses are incurred outside the United States and denominated in foreign currencies and are subject to fluctuations due to changes in foreign currency exchange rates, particularly changes in the British pound and Euro. Additionally, fluctuations in foreign currency exchange rates may cause us to recognize transaction gains and losses in our statement of operations. Given the impact of foreign currency exchange rates has not been material to our historical operating results, we have not entered into

derivative or hedging transactions, but we may do so in the future if our exposure to foreign currency should become more significant.

Our financial statements are prepared in accordance with U.S. generally accepted accounting principles, or GAAP. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenue, expenses, and related disclosures. We evaluate our estimates and assumptions on an ongoing basis. Our estimates are based on historical experience and various other assumptions that we believe to be reasonable under the circumstances. Our actual results could differ from these estimates.

The critical accounting estimates, assumptions and judgments that we believe have the most significant impact on our consolidated financial statements are described below.

We derive revenue from two sources: (1) product revenue which includes hardware and embedded software and (2) support revenue which includes customer support, hardware maintenance and software upgrades on a when-and-if-available basis.

Our product revenue is derived from the sale of hardware and operating system software that is integrated into the hardware and therefore deemed essential to its functionality. The hardware and the operating system software essential to the functionality of the hardware are considered non-software deliverables and, therefore, are not subject to industry-specific software revenue recognition guidance.

Support revenue is derived from the sale of maintenance and support agreements. Maintenance and support agreements include the right to receive unspecified software upgrades and enhancements on a when-and-if-available basis, bug fixes, parts replacement services related to the hardware, as well as access to our cloud-based management and support platform. Revenue related to maintenance and support agreements are recognized ratably over the contractual term, which generally range from 1 to 3 years. Costs related to maintenance and support agreements are expensed as incurred. In addition, our Forever Flash program provides our customers who continually maintain active maintenance and support for three years with an included controller refresh with each additional three year maintenance and support renewal. In accordance with multiple-element arrangement accounting guidance, the controller refresh represents an additional deliverable that is a separate unit of accounting. The allocated revenue is recognized and the related cost is expensed in the period in which these controllers are shipped.

Most of our arrangements, other than stand-alone renewals of maintenance and support agreements, are multiple-element arrangements with a combination of product and support related deliverables (as defined above). Under multiple-element arrangements, we allocate consideration at the inception of an arrangement to all deliverables based on the relative selling price method in accordance with the hierarchy provided by the multiple-

element arrangement accounting guidance, which includes (i) vendor-specific objective evidence, or VSOE, of selling price, if available; (ii) third-party evidence, or TPE, of selling price, if VSOE is not available; and (iii) best estimate of selling price, or BESP, if neither VSOE nor TPE is available. As discussed below, because we have not established VSOE for any of our deliverables and TPE typically cannot be obtained, we typically allocate consideration to all deliverables based on BESP.

Deferred commissions consist of direct and incremental costs paid to our sales force related to customer contracts. The deferred commission amounts are recoverable through the revenue streams that will be recognized under the related customer contracts. Direct sales commissions are deferred when earned and amortized over the same period that revenue is recognized from the related customer contract. Amortization of deferred commissions is included in sales and marketing expense in the consolidated statements of operations.

We measure and recognize compensation expense for all stock-based awards granted to our employees and other service providers, including stock options and restricted stock awards, based on the estimated fair value of the award on the grant date. We use the Black-Scholes option pricing model to estimate the fair value of stock option awards. The fair value of restricted stock awards is determined based on the fair value of our Class B common stock estimated as part of the capital stock and business enterprise valuation process. The fair value is recognized as an expense, net of estimated forfeitures, on a straight line basis over the requisite service period. For stock-based awards granted to employees with a performance condition, we recognize stock-based compensation expense for these awards under the accelerated attribution method over the requisite service period when management determines it is probable that the performance condition will be satisfied.

Our use of the Black-Scholes option pricing model requires the input of highly subjective assumptions, including the fair value of the underlying common stock, expected term of the option, expected volatility of the price of our common stock, risk-free interest rates and the expected dividend yield of our Class B common stock. The assumptions used in our option pricing model represent management’s best estimates. These estimates involve inherent uncertainties and the application of management’s judgment. If factors change and different assumptions are used, our stock-based compensation expense could be materially different in the future.

The following table summarizes the assumptions used in the Black-Scholes option-pricing model to determine the fair value of our stock options for employees and non-employees:

In addition, we are required to estimate the expected forfeiture rate and only recognize expense for those shares that are expected to vest. We estimate the expected forfeiture rate based on historical experience and our expectations regarding future pre-vesting termination behavior of employees and other service providers. To the extent our actual forfeiture rate is different from our estimate, stock-based compensation expense is adjusted accordingly.

We will continue to use judgment in evaluating the assumptions related to our stock-based compensation on a prospective basis. As we continue to accumulate additional data related to our Class B common stock, we may refine our estimation process, which could materially impact our future stock-based compensation expense.

The fair value of the Class B common stock underlying our stock options was determined by our board of directors. The valuations of our Class B common stock were determined in accordance with the guidelines outlined in the American Institute of Certified Public Accountants Practice Aid, Valuation of Privately-Held-Company Equity Securities Issued as Compensation. In the absence of a public trading market, our board of directors, with input from management, exercised significant judgment and considered numerous objective and subjective factors to determine the fair value of our Class B common stock as of the date of each option grant, including the following factors:

In valuing our Class B common stock, the fair value of our business, or Enterprise Value, was determined using an income approach and a market approach. The Enterprise Value determined was then adjusted to: (1) add back cash on hand and tax benefits from NOLs and (2) remove certain long-term liabilities in order to determine an equity value, or Equity Value. The resulting Equity Value was then allocated to the Class B common stock using combination of the option pricing method and a Probability Weighted Expected Return Method. After the Equity Value is determined and allocated to the various classes of shares, a discount for lack of marketability, or DLOM is applied to arrive at the fair value of the Class B common stock. A DLOM is applied based on the theory that as a private company an owner of the stock has limited opportunities to sell this stock and any such sale would involve significant transaction costs, thereby reducing overall fair market value.

Our assessments of the fair value of the Class B common stock for grant dates between the dates of the valuations were based in part on the current available financial and operational information and the Class B common stock value provided in the most recent valuation as compared to the timing of each grant. For financial reporting purposes, we considered the amount of time between the valuation date and the grant date to determine whether to use the latest Class B common stock valuation or a straight-line calculation between the two valuation dates. This determination included an evaluation of whether the subsequent valuation indicated that any significant change in valuation had occurred between the previous valuation and the grant date.

Once we are operating as a public company, we will rely on the closing price of our Class A common stock as reported by the NYSE on the date of grant to determine the fair value of our Class A common stock.

Based on the assumed initial public offering price per share of $17.00, which is the midpoint of the offering price range set forth on the cover page of this prospectus, the aggregate intrinsic value of our outstanding stock awards as of July 31, 2015 was $749.7 million, of which $306.3 million related to vested awards and $443.4 million related to unvested awards.

In May 2014, the Financial Accounting Standards Board, or FASB, issued Accounting Standards Update No. 2014-09 Revenue from Contracts with Customers, or ASU 2014-09. ASU 2014-09 supersedes the revenue recognition requirements in Revenue Recognition (Topic 605), and requires entities to recognize revenue when it transfers promised goods or services to customers in an amount that reflects the consideration to which the entity

expects to be entitled to in exchange for those goods or services. In August 2015, the FASB issued Accounting Standards update No. 2015-14 Revenue from Contracts with Customers, or ASU 2015-14. ASU 2015-14 defers the effective date for ASU 2014-09, and accordingly the effective date for us commences on February 1, 2018 and early adoption is allowed for our fiscal year beginning February 1, 2017. This standard will be applied using either the full or modified retrospective adoption methods. We are currently evaluating adoption methods and the impact of this standard on our consolidated financial statements.

Most storage companies are beginning to use flash memory to try to deliver higher performance data storage. At Pure, we are transforming the storage industry. Yes, we are delivering faster storage, but we are also delivering radically simpler storage—imagine storage with the ease of use of a smartphone. At the same time, we are changing the way storage is sold and maintained, delivering a dramatically better customer experience at a lower overall cost. We have focused on making storage so fast and so economical that organizations can do things with their data and applications that would never have been possible with their existing storage.

We call ourselves Puritans, and we proudly wear orange. In addition to assembling an outstanding team, we have built a special company culture, which we call the entrepreneurial workforce:

As we recruit new Puritans, we look for and reinforce these values. The quality of our team is by far our most valuable asset.

We believe that the market opportunity in front of Pure Storage is substantial. While we have executed well to date, we are even more excited about the road ahead:

In short, we plan to continue to manage Pure in the same fashion as we have managed Pure as a private company—striving to do the right thing for the long term rather than optimizing for the near term.

We are thrilled to welcome those of you who will join us on our journey, as customers, partners, employees or as shareholders. We have the opportunity to build a large and enduring independent company, which we see as the best outcome for all of our constituencies.

Our business model builds on our technical innovations to reverse the traditional storage business model. Instead of moving data between old and new systems via forklift upgrades, we keep business data and applications in place and upgrade technology around it. Our platform and business model are designed to add value to customers for a decade or more, reducing total cost of storage ownership while increasing loyalty.

We have experienced significant growth. Our revenue increased from $6.1 million for the fiscal year ended January 31, 2013 to $42.7 million for the fiscal year ended January 31, 2014 and to $174.5 million for the fiscal year ended January 31, 2015, representing year-over-year revenue growth of 603% and 308% for our two most recent fiscal years. Our revenue increased from $59.4 million for the six months ended July 31, 2014 to $158.7 million for the six months ended July 31, 2015, representing period-over-period growth of 167% for our most recent interim period. Our net loss was $23.4 million, $78.6 million and $183.2 million for the fiscal years ended January 31, 2013, 2014 and 2015, respectively, and $95.2 million and $113.0 million for the six months ended July 31, 2014 and 2015, respectively. For the fiscal year ended January 31, 2015 and the six months ended July 31, 2015, 77% and 78% of our revenue was from the United States, and 23% and 22% from the rest of the world, respectively.

The speed of servers and networks has dramatically improved over the past several decades, but the performance of disk-based storage has not kept up. Mechanical disk has fundamental physical limitations in reading and writing data and typically operates in milliseconds, 1,000 times slower than the microsecond processing speed of today’s computing and networking systems. Disk-based storage is now an obstacle to application performance, squandering investments in fast servers that may spend a substantial portion of processing time waiting for disks to seek and rotate to deliver data.

Flash memory is a solid-state storage technology that can eliminate this storage bottleneck while providing better performance, greater storage density and improved power efficiency as compared to disk. For instance, a 1TB flash device can perform 64 operations in parallel while a 1TB disk can only perform a single operation at a time. Flash memory has transformed today’s consumer technology experience—it is the storage media inside smartphones—and now it is time for business to enjoy those same benefits. The price performance of flash technology, too, has improved dramatically in recent years. Already, leading web-scale companies such as Apple, Facebook and Google are utilizing flash-based storage in their datacenters.

slower disk operations. For example, even if 90% of data read and write operations are processed on flash technology and 10% of operations are processed on disk, applications can suffer from nearly a 5X performance reduction as compared to all-flash storage.

Cloud computing has been one of the more compelling IT advances in years. Today, organizations use shared resources in the cloud, significantly reducing the cost and complexity of operations and datacenters. Organizations around the world are now adopting many of the core tenets of this cloud model to transform their own operations and datacenters.

With the increased demands of a complex and changing business environment, we believe organizations not only desire but also require a new storage platform that combines the following:

Pure Storage serves the market for enterprise storage and related storage software. According to IDC, the combined worldwide spend by enterprises on external storage hardware priced at more than $50,000 per array and storage and device management, storage infrastructure and storage replication software is estimated to grow from approximately $24.2 billion in 2014 to $27.0 billion in 2018. Hardware spend in this area alone will grow from $16.5 billion in 2014 to $18.0 billion in 2018, while software spend will grow from $7.7 billion in 2014 to $9.0 billion in 2018. Customers are increasingly replacing traditional disk-based systems with all-flash storage, and spend on all-flash solutions is expected to grow from $1.3 billion in 2014 to $3.3 billion in 2018, representing a 26.6% compounded annual growth rate. We believe the benefits of next-generation flash storage will drive flash to ultimately become the predominant form of primary enterprise data storage.

Pure Storage is defining the next generation of enterprise data storage. We have pioneered the all-flash array category and have coupled that with our customer-centric business model. Our storage platform integrates the Purity Operating Environment, our flash-optimized software, FlashArray, our modular and scalable all-flash array hardware, and Pure1, our cloud-based management and support. This platform, combined with ongoing maintenance and support, provides an evergreen storage solution that enables our customers to both accelerate business performance and increase the efficiency, agility and simplicity of their operations. We believe that our approach is having a profound impact both on our customers and on the data storage industry as a whole:

Our next-generation storage platform is comprised of three integrated components, all designed from the ground-up for solid-state storage: the Purity Operating Environment, our flash-optimized software; FlashArray, our modular and scalable all-flash array hardware; and Pure1, our cloud-based management and support. These three components are complemented by our innovative business model, which is designed to improve our customers’ experience related to the procurement, upgrade, expansion and ownership of storage.

The heart of our storage platform is the Purity Operating Environment, our proprietary software that runs across all FlashArray generations and is included with the purchase of our hardware. Key features of our Purity Operating Environment include:

FlashArray is a modular all-flash storage array designed to maximize the performance and density of flash, optimize the advanced software services that the Purity Operating Environment provides, and minimize overall solution cost for customers. We have brought four generations of FlashArray to market, and we are currently selling both the FlashArray 400-Series and the newer FlashArray//m, which we announced in June 2015. The FlashArray 400-Series features independent controllers and storage shelves, while the latest generation FlashArray//m features a chassis-based design, fully integrating HA controllers and flash in a single appliance. FlashArray//m is based upon an in-house hardware design enabling us to further optimize performance, density and cost. FlashArray is built around the following principles and innovations:

Pure1 is a cloud-based management and support platform that enables our customers, our support staff and our partners to seamlessly and securely collaborate to maximize the reliability of the Pure Storage platform while minimizing management overhead and cost to the customer. Our cloud-based platform removes the need for dedicated storage management infrastructure, enables customers to monitor a global storage deployment from a mobile device and simplifies integration with other datacenter management solutions. Our FlashArrays embed our Pure1 technology, which creates an “always-on” support connection to Pure Storage, sending telemetric data to Pure to help us deliver a more proactive management and support experience. This approach has helped to drive high levels of customer satisfaction. We have a Net Promoter score of approximately 80, based on customer satisfaction surveys we conducted through August 2015. Pure1 consists of three integrated modules:

Pure1 Support is offered in two levels: Advanced and Premium. We do not offer “basic” support service, as we believe that every customer deployment is critical and deserves 24x7 support. Pure1 Support Advanced includes 24x7 phone support with 30-minute maximum response time for critical issues, proactive monitoring, and a next-business-day service level for on-site replacement of failed hardware components. Pure1 Support Premium expands upon the service level of Advanced by reducing the maximum response time to 15 minutes for critical issues and reducing the service level for on-site parts replacement to 4 hours.

In addition to our product leadership and differentiated customer experience, our business model innovation helps us achieve our vision of evergreen storage. We believe that the traditional storage business model is expensive, resource intensive and detrimentally impacts customer operations. Pure’s alternative approach is designed to eliminate this pain. We believe that it will be difficult for legacy storage vendors to copy our business model innovations given their dependence on complex licensing programs and regular forklift array replacement upgrades. We have created the following business model innovations and programs:

We target large and medium-sized enterprises, state, local and federal governments, schools and healthcare organizations globally. Our customer base includes over 1,100 organizations as of July 31, 2015 and included over 30, 200 and 700 organizations as of January 31, 2013, 2014 and 2015, respectively. We have deployed our storage platform with customers across multiple industry verticals. Our storage platform has been deployed in some of the largest and most sophisticated enterprise infrastructures in the world as well as smaller organizations with limited IT expertise or budget, such as hospitals, municipalities and school districts. Actual customer deployments range from a single FlashArray that can store a few terabytes of data to dozens of FlashArrays that, in the aggregate, can store multiple petabytes of data. Our customers include over 10% of the Fortune 500, and more than 100 of our customers have purchased over $1 million of our products and support. No individual customer represented more than 10% of our revenue in the fiscal year ended January 31, 2015 and the six months ended July 31, 2015.

The following are representative examples of how some of our customers have benefited from typical deployments of our storage platform:

Situation: LinkedIn is the leading social network for business professionals worldwide, with more than 364 million members globally. By 2012, LinkedIn’s rapid growth necessitated a new storage solution that would allow it to better deliver a seamless web experience to its users and run the internal applications critical to its business.

Solution and Benefit: For LinkedIn, the implementation of the FlashArray has driven long-term cost reductions, improved efficiency for its IT team and provided better business analytics for its internal teams. Since deploying the FlashArray, LinkedIn has decreased data access times to consistently less than 1 millisecond, for a total reduction of 3-5 milliseconds, resulting in a dramatic improvement in experience for both LinkedIn members and internal teams. With an average of 5.5:1 data reduction and upwards of 20:1 data reduction on read replicas and Oracle development environments, LinkedIn was able to decrease its storage footprint by 10X, while decreasing operational costs for power, cooling and rack space by 8X.

With the snapshot and cloning functionality of the Purity Operating Environment, LinkedIn has optimized its process for database refreshes, taking the process from over 24 hours to minutes. Since the initial deployment in 2012, LinkedIn has continued to expand the use of the FlashArray from front-end applications such as LinkedIn.com to Oracle testing and development, data warehouse and virtual server and virtual desktop deployments.

Situation: ConocoPhillips is the world’s largest independent exploration and production company, based on proved reserves and production of liquids and natural gas. In 2014, ConocoPhillips was faced with increasing maintenance bills and complexity with its existing storage system. ConocoPhillips wanted a simple solution that was within its budget and would allow it to be faster and more agile, while reducing space, power and cooling requirements.

Solution and Benefit: After extensive testing, ConocoPhillips purchased multiple FlashArrays based on its simplicity and performance advantages, and its cost effectiveness. The ease of deployment and native replication were key factors relative to more complex alternative solutions that required installation of external software. The FlashArrays provided consistently high performance, enabling ConocoPhillips to confidently run financial reports 2X more frequently. In addition, with overall data reduction rates of over 4:1, the implementation of the FlashArrays enabled ConocoPhillips to reduce space requirements for the relevant systems by about 80%, condensing 14 data center floor tiles down to 3, with related power requirements decreased by over 90%, as compared to its existing disk-based storage systems. In fact, the switch to the FlashArray dropped the temperature by two degrees and the total power consumption by 2% across the entire data center. ConocoPhillips saw all of these benefits at a price at or below the cost of equivalent disk-based systems.

Situation: New York-Presbyterian Hospital (NYPH) is an academic medical center located in New York City and is ranked among the top ten hospitals in the United States. In 2014, NYPH was seeking to upgrade the storage underlying its virtual desktop and virtual server infrastructure, as well as the storage underlying a reporting application for its outpatient practices, and decided to test the FlashArray against an all-flash array from a legacy storage vendor. As a busy, leading hospital, NYPH was sensitive to any disruption or downtime, so selection of the right solution was critical.

Solution and Benefit: After an extensive six-month proof of concept trial, NYPH selected the FlashArray for its resiliency and data reduction capabilities, as well as its ability to scale to support thousands of virtual desktop users and virtual server workloads. Only the FlashArray met NYPH’s failure and upgrade requirements and it had 2X better data reduction rates as compared to the competitive solution. NYPH transitioned its reporting application for its out-patient practices to the FlashArray with impressive results: the nightly batch report ran in just 2 hours, down from 10 hours on the hospital’s existing storage—a 5X reduction.

NYPH later purchased additional capacity to add more workloads to the FlashArray. The installation was completed in minutes, without any downtime or performance interruption. The FlashArray’s data reduction rates have allowed NYPH to realize the benefits of flash at or below the cost of disk-based storage, while the simplicity of the FlashArray allowed NYPH to eliminate the complex tiering associated with spinning disk. With the FlashArray, NYPH is ensuring an improved end user experience for doctors, nurses and staff and timely report generation to enable prompt and accurate decision making by NYPH leadership.

Situation: With a presence in more than 100 countries and services covering more than 90 percent of the world’s GDP and population, Nielsen is a global consumer research firm that major consumer brands rely on for insights into how they should manage their business. Data is the lifeblood of Nielsen’s business, which is why, in 2014, it made the decision to modernize some of its legacy disk-based storage to FlashArray, which handles this data more quickly, efficiently and effectively.

Solution and Benefit: FlashArray has given Nielsen a 3X reduction in latency—it has also replaced 50 racks of disk-based storage with just 5 racks of FlashArrays.

Sales. We sell our storage platform predominantly through a high touch, channel-fulfilled sales model. Our sales organization supports our channel partners and is responsible for large-account penetration, global account coordination and overall market development. Our channel partners help market and sell our products, typically with assistance from our sales force. This joint sales approach provides us with the benefit of direct relationships with substantially all of our customers and expands our reach through the relationships of our channel partners. In certain geographies we sell through a two-tier distribution model. We also sell to service providers that deploy our products and offer cloud-based storage services to their customers.

We intend to continue to expand our partner relationships to further extend our sales coverage and to invest in education, training and programs to increase the ability of our channel partners to sell our products independently. We expect to continue to grow our sales organization and expand our international sales presence. Generally, our sales representatives have become more productive the longer they are with us, with limited productivity in their first few quarters as they learn to sell our products and participate in classroom and field training. We optimize our sales management efforts to help our sales representatives optimize their productivity throughout their tenure. Our sales organization is supported by sales engineers with deep technical expertise and responsibility for pre-sales technical support, solutions engineering for our customers and technical training for our channel partners. No individual channel partner represented more than 10% of our revenue in the fiscal year ended January 31, 2015 and the six months ended July 31, 2015.

Technology Alliances. We work closely with technology partners that help us deliver world-class solutions to our customers and ensure the efficient deployment and support of their datacenter infrastructure. Our technology partners include application partners such as Microsoft, Oracle and SAP and infrastructure partners such as Arista, Brocade, Cisco, Citrix, CommVault, RedHat, Symantec and VMware. In addition, we work closely with our technology partners through co-marketing and lead-generation activities in an effort to broaden our marketing reach and help us win new and retain existing customers.

Marketing. Our marketing is focused on building our brand reputation and market awareness, communicating product advantages, driving customer demand and generating leads for our sales force and channel partners. Our marketing effort consists primarily of product, field, channel, solutions and digital marketing and public relations.

Our research and development efforts are focused primarily on improving our existing products and developing new products. Our products integrate both software and hardware innovations, and accordingly, our research and development teams employ both software and hardware engineers in the design, development, testing, certification and support of our products. Most of our research and development team is based in Mountain View, California. We also design, test and certify our products to ensure interoperability with a variety of third-party software, servers, operating systems and network components. We plan to dedicate significant resources to our continued research and development efforts.

Research and development expenses were $12.4 million, $36.1 million and $92.7 million for the fiscal years ended January 31, 2013, 2014 and 2015, and $40.5 million and $69.9 million for the six months ended July 31, 2014 and 2015, respectively.

Our contract manufacturers, Avnet, Inc., or Avnet, and Hon Hai Precision Industry Co., Ltd., known as Foxconn, manufacture, assemble, test and package our products in accordance with our specifications. Our contract manufacturers generally procure the hardware components for final assembly of our products. Most of the components are purchased from sources that we believe are readily available from other suppliers.

We provide our contract manufacturers a rolling forecast for anticipated orders, which our contract manufacturers use to build finished products. The product mix and volumes are adjusted based on anticipated demand and actual sales and shipments in prior periods. Our contract manufacturers are generally able to respond to changes in our product mix or volume without significant delay or increased costs. Our agreement with Avnet is terminable at any time by either party upon 90 days written notice and does not provide for any specific purchase volumes. Our agreement with Foxconn has a three-year term that is subject to optional extensions absent notice of termination by either party. This agreement is terminable at any time by either party with 180-days’ prior notice. Our agreements with our contract manufacturers do not provide for any specific volume purchase commitments and orders are placed on a purchase order basis. We work closely with our contract manufacturers to meet our product delivery requirements and to manage the manufacturing process and quality control.

We typically accept and ship orders within a short time frame. In general, customers may cancel or reschedule orders without penalty, and delivery schedules requested by customers in their purchase orders vary based upon each customer’s particular needs. As a result, we do not believe that our backlog at any particular time is a reliable indicator of future revenue.

We operate in the intensely competitive data storage market that is characterized by constant change and innovation. Changes in the application requirements, datacenter infrastructure trends and the broader technology landscape result in evolving customer requirements for capacity, performance scalability and enterprise features of storage systems. Our main competitors fall into two categories:

In addition, we compete against smaller specialized storage companies, including next-generation vendors of hybrid storage as well as vendors of hyper-converged products, defined as server compute and storage combined within a single chassis. As our market grows, it will attract new startups, more highly specialized vendors as well as larger vendors that may continue to acquire or bundle their products more effectively.

We believe the principal competitive factors in the storage market are as follows:

We believe we generally compete favorably with our competitors on the basis of these factors as a result of our hardware and software, product capabilities, ability to deliver the benefits of all-flash storage to a broad set of customers, management simplicity, ease of use and differentiated customer support. However, many of our competitors have substantially greater financial, technical and other resources, greater name recognition, larger sales and marketing budgets, broader distribution and larger and more mature intellectual property portfolios.

Our success depends in part upon our ability to protect our core technology and intellectual property. To establish and protect our proprietary rights, we rely on a combination of intellectual property rights, including patents, trademarks, copyrights, trade secret laws, license agreements, confidentiality procedures, employee disclosure and invention assignment agreements and other contractual rights.

As of July 31, 2015, we had over 200 total issued patents and over 150 patent applications in the United States and foreign countries. Our issued patents have expiration dates ranging from 2015 to 2034. We also license technology from third parties when we believe it will facilitate our product offerings or business. We have adopted a policy under which we will not assert patents acquired to date from third parties offensively, other than as part of a counterclaim.

We generally control access to and use of our proprietary software and other confidential information through the use of internal and external controls, including contractual protections with employees, contractors, customers and partners. Unauthorized parties may still copy or otherwise obtain and use our software and technology, despite our efforts to protect our trade secrets and proprietary rights through intellectual property rights, licenses and confidentiality agreements. We intend to expand our international operations, and effective patent, copyright, trademark and trade secret protection may not be available or may be limited in foreign countries.

The data storage industry is characterized by the existence of a large number of patents, trademarks, copyrights and other intellectual property rights, and by frequent litigation based on allegations of infringement or other violations of intellectual property rights. From time to time, third parties, including our competitors and non-practicing entities, may claim that our products or technologies infringe their proprietary rights and may assert patent, copyright, trade secret and other intellectual property rights against us and our customers, suppliers and channel partners. We are party to a number of agreements pursuant to which we are obligated to indemnify our customers, suppliers and channel partners against such claims. We expect that infringement claims may increase as

the number of products and competitors in our market increase. In addition, to the extent that we gain greater visibility and market exposure as a public company, we face a higher risk of being the subject of intellectual property infringement claims from third parties. See the section titled “Risk Factors” for additional information.

Our corporate headquarters are located in Mountain View, California. We also maintain offices in multiple locations in the United States and internationally in Europe, Asia, Australia, South America and Africa. We lease all of our facilities and do not own any real property. We expect to add facilities as we grow our employee base and expand geographically. We believe that our facilities are adequate to meet our needs for the immediate future, and that, should it be needed, suitable additional space will be available to accommodate expansion of our operations.

We believe the expertise of our people and our culture is a key enabler of our technology leadership. We had over 1,100 employees worldwide as of July 31, 2015. None of our employees is represented by a labor organization or is a party to any collective bargaining arrangement.

On November 4, 2013, EMC filed a complaint against us in the United States District Court for the District of Massachusetts, alleging that our hiring of EMC employees evidences a scheme to misappropriate EMC’s confidential information and trade secrets and to unlawfully interfere with EMC’s business relationships with its customers and contractual relationships with its employees. The complaint seeks damages and injunctive relief. On November 26, 2013, we answered and counterclaimed, denying EMC’s allegations and alleging that EMC surreptitiously obtained and tested our product in a manner that constituted misappropriation of our trade secrets, a breach of contract, breach of the covenant of good faith and fair dealing, unlawful interference with our contractual and business relationships as well as unfair competition and a violation of Massachusetts General Law 93A, Sections 2 and 11. On November 18, 2014, we amended our counterclaim, additionally alleging that EMC has engaged in commercial disparagement, violated the Lanham Act and engaged in defamation. Our counterclaim seeks damages and declaratory and injunctive relief. Fact discovery has commenced and is currently scheduled to end on October 16, 2015. Expert discovery is scheduled to end on February 5, 2016, and the deadline for filing dispositive motions is March 31, 2016. The district court has scheduled a trial date for October 17, 2016.

In a separate litigation matter, on November 26, 2013, EMC filed a complaint against us in the United States District Court for the District of Delaware, alleging infringement of five patents held by EMC. The five patents are U.S. Patent 6,904,556 entitled “Systems and Methods Which Utilize Parity Sets,” U.S. Patent 6,915,475 entitled “Data Integrity Management for Data Storage Systems,” U.S. Patent 7,373,464 entitled “Efficient Data Storage System” and the related U.S. Patent 7,434,015 entitled “Efficient Data Storage System” and U.S. Patent 8,375,187 entitled “I/O Scheduling For Flash Drives.” The complaint seeks damages and injunctive and equitable relief. On January 17, 2014, we filed a response to the complaint, denying all claims and asserting that EMC’s patents are invalid. Fact discovery has been concluded, and expert discovery has ended. The deadline for filing dispositive motions is October 6, 2015. Trial is currently scheduled for March 7, 2016.

In addition, we may, from time to time, be involved in various legal proceedings arising from the normal course of business, and an unfavorable resolution of any of these matters could materially affect our future results of operations, cash flows or financial position.

In August 2015, we established the Pure Good Foundation as a non-profit organization, and in September 2015 we issued 700,000 shares of our Class B common stock to this foundation. We anticipate that the proposed programs of the Pure Good Foundation will include grants, humanitarian relief, volunteerism and social development projects. We believe that the Pure Good Foundation will foster employee morale, strengthen our community presence and provide increased brand visibility.

The following table sets forth information regarding our executive officers and directors as of July 31, 2015:

Scott Dietzen has served as our Chief Executive Officer and as a member of our board of directors since October 2010. From 2007 to 2009, Dr. Dietzen served in various roles at Yahoo! Inc., an internet technology company, including as interim Senior Vice President of Yahoo! Communications and Communities. From 2005 to 2007, Dr. Dietzen served as President and Chief Technology Officer of Zimbra, Inc., a provider of open source messaging and collaboration software until its sale to Yahoo! in 2007. From 1998 to 2004, Dr. Dietzen served in various roles at BEA Systems, Inc., including as BEA Systems’ Chief Technology Officer. He had served as Vice President, Marketing at WebLogic, Inc., a provider of web application servers, which BEA Systems acquired in 1998. Dr. Dietzen previously served as Principal Technologist at Transarc Corporation, a filesystem software company, which was acquired by IBM. Dr. Dietzen currently serves on the board of directors of Cloudera, Inc. He earned a B.S. in Applied Mathematics and Computer Science and a M.S. and Ph.D. in Computer Science from Carnegie Mellon University. We believe that Dr. Dietzen is qualified to serve as a member of our board of directors because of his deep technology background and his extensive leadership experience across a range of technology companies.

John “Coz” Colgrove has served as our Chief Technology Officer and as a member of our board of directors since founding Pure Storage in October 2009. Since May 2014, Mr. Colgrove has served as Co-Chairman of our board of directors. In 2009, Mr. Colgrove served as an Entrepreneur in Residence at Sutter Hill Ventures, a venture capital firm. From 2005 to 2008, Mr. Colgrove served as a Fellow and Chief Technology Officer for the Datacenter Management Group of Symantec Corporation, an information security firm. Mr. Colgrove was one of the founding engineers and a Fellow at Veritas Software Corp., a provider of storage management solutions, which merged with Symantec in 2005. Mr. Colgrove earned his B.S. in Computer Science from Rutgers University and holds over 100 patents in the areas of computer system and data storage design. We believe that Mr. Colgrove is qualified to serve as a member of our board of directors because of his industry knowledge and his experience as a founder of Pure Storage, as well as his leadership experience and deep technical expertise.

David Hatfield has served as our President since January 2013. From March 2007 to January 2013, Mr. Hatfield served as Senior Vice President of Worldwide Sales, Marketing, Products and Services and President of SaaS at Limelight Networks, Inc., a digital presence management software company, where he was responsible for establishing their customer operations and global channel. From 2006 to 2007, Mr. Hatfield served as Vice President-General Manager of Professional Services for the Americas at Symantec and as Symantec’s Vice President of Sales from 2005 to 2006. From 2003 to 2005, Mr. Hatfield served as Vice President of Sales at Veritas Software. Mr. Hatfield earned a B.S. in Political Science from Santa Clara University.

Timothy Riitters has served as our Chief Financial Officer since August 2014. From January 2010 to August 2014, Mr. Riitters served as Senior Director of Corporate Finance at Google, Inc., an internet technology company, where he was responsible for overseeing their annual planning and budget process. From 2007 to 2010, Mr. Riitters served as Director, EMEA Financial Operations at Google, and from 2004 to 2007, as Finance Process Manager. From 2002 to 2004, Mr. Riitters served as a Senior Product Manager at Siebel Systems, Inc., a software company. Mr. Riitters previously worked at Deloitte & Touche LLP, an accounting firm. Mr. Riitters is a certified public accountant (inactive) and earned a B.S. in Accounting from the University of Minnesota and an M.B.A. from Northwestern University.

Mike Speiser has served on our board of directors since October 2009 and as Co-Chairman of our board of directors since May 2014. Since 2008, Mr. Speiser has served as a Managing Director at Sutter Hill Ventures, a venture capital firm. From 2007 to 2008, Mr. Speiser served as Vice President of Community Products at Yahoo! Inc. From 2006 to 2007, Mr. Speiser served as President and Chief Executive Officer of Bix, Inc., an internet company that Mr. Speiser founded. From 2005 to 2006, Mr. Speiser served as a technical advisor to Symantec. From 2001 to 2005, Mr. Speiser served as Vice President of Product Management and Product Marketing at Veritas Software. Mr. Speiser earned a B.A. in Political Science from the University of Arizona and an M.B.A. from Harvard Business School. We believe that Mr. Speiser is qualified to serve as a member of our board of directors because of his early and active involvement with Pure Storage and his extensive leadership and operational experience, as well as his perspective as a venture investor.

Aneel Bhusri has served on our board of directors since July 2010. Since 1999, Mr. Bhusri has served as a partner at Greylock Partners, a venture capital firm. Since 2005, Mr. Bhusri has served as a member of the board of directors of Workday, Inc., an enterprise cloud application provider that he co-founded, as Co-Chief Executive Officer from September 2009 to May 2014, as Chairman from January 2012 to May 2014 and as Chief Executive Officer since May 2014. From 1993 to 2004, Mr. Bhusri held a number of senior management positions with PeopleSoft, Inc., a human resource management systems company, including Senior Vice President, Product Strategy, Marketing and Business Development and from 1999 to 2002 and in 2004, as Vice Chairman of the Board of Directors of PeopleSoft. Mr. Bhusri currently serves on the board of directors of Intel Corporation. From 2002 to 2009, Mr. Bhusri was a member of the board of directors of Data Domain Corporation, where he held the position of Chairman from 2007 to 2009. Mr. Bhusri earned a B.S. in Electrical Engineering and a B.A. in Economics from Brown University and an M.B.A. from Stanford University. Mr. Bhusri currently serves on the board of directors of a number of privately held companies. We believe that Mr. Bhusri is qualified to serve as a member of our board of directors because of his extensive executive leadership and operational experience, including his service as an executive and director of multiple high growth technology companies.

Mark Garrett has served on our board of directors since July 2015. Since 2007, Mr. Garrett has served as Executive Vice President and Chief Financial Officer of Adobe Systems Incorporated. From 2004 to 2007, Mr. Garrett served as Senior Vice President and Chief Financial Officer of the Software Group of EMC Corporation, an information technology company. From 2002 to 2004 and from 1997 to 1999, Mr. Garrett served as Executive Vice President and Chief Financial Officer of Documentum, Inc., including throughout its acquisition by EMC in December 2003. Mr. Garrett currently serves on the board of directors of Model N, Inc. From October 2008 to August 2015, Mr. Garrett served on the board of directors of Informatica Corporation.

Mr. Garrett earned a B.S. in accounting and marketing from Boston University and an M.B.A. from Marist College. We believe that Mr. Garrett is qualified to serve as a member of our board of directors because of his extensive management and financial experience, as well as his relevant industry knowledge.

Anita Sands has served on our board of directors since July 2015. From April 2012 to September 2013, Dr. Sands served as Group Managing Director and Head of Change Leadership and a member of the Wealth Management Americas Executive Committee of UBS Financial Services, a global financial services firm. From April 2010 to April 2012, Dr. Sands served as Group Managing Director and Chief Operating Officer of Wealth Management Americas at UBS Financial Services. From October 2009 to April 2010, Dr. Sands served as Transformation Consultant at UBS Financial Services. From 2008 to 2009, Dr. Sands served as Managing Director, Head of Transformation Management at Citigroup’s Global Operations and Technology organization. Prior to that, Dr. Sands also held several leadership positions with RBC Financial Group and CIBC. Dr. Sands currently serves on the board of directors of Symantec Corporation, ServiceNow, Inc. and a non-profit organization. Dr. Sands earned a B.S. in Physics and Applied Mathematics from The Queen’s University of Belfast, Northern Ireland, a Ph.D. in Atomic and Molecular Physics from The Queen’s University of Belfast, Northern Ireland and a M.S. in Public Policy and Management from Carnegie Mellon University. We believe that Dr. Sands is qualified to serve as a member of our board of directors because of her extensive leadership and operational experience at global financial services firms, as well as her service as a director of multiple large technology companies.

Frank Slootman has served on our board of directors since May 2014. Since May 2011, Mr. Slootman has served as President and Chief Executive Officer, and as a member of the board of directors, of ServiceNow, Inc., an enterprise IT cloud company. From January 2011 to April 2011, Mr. Slootman served as a Partner with Greylock Partners, a venture capital firm. From 2011 to 2012, Mr. Slootman served as an advisor to EMC Corporation. From 2009 to 2011, Mr. Slootman served as President of the Backup Recovery Systems Division at EMC. From 2003 to 2009, Mr. Slootman served as President and Chief Executive Officer of Data Domain Corporation, an information technology company, which was acquired by EMC in 2009. Since August 2011, Mr. Slootman has served as a member of the board of directors of Imperva, Inc. Mr. Slootman earned undergraduate and graduate degrees in Economics from the Netherlands School of Economics, Erasmus University Rotterdam. We believe that Mr. Slootman is qualified to serve as a member of our board of directors because of his extensive executive leadership and operational experience, as well as his relevant industry knowledge.

Michelangelo Volpi has served on our board of directors since April 2014. Since July 2009, Mr. Volpi has served as a partner at Index Ventures, a venture capital firm. From 2007 to 2009, Mr. Volpi served as Chief Executive Officer for Joost Inc., an internet video services company. From 1994 to 2007, Mr. Volpi served in various executive roles at Cisco Systems, Inc., a technology company, including Chief Strategy Officer and Senior Vice President and General Manager, Routing and Service Provider Group. Mr. Volpi currently serves on the board of directors of Hortonworks, Inc., Exor S.p.A. and a number of privately held companies. From April 2010 to April 2013, Mr. Volpi served on the board of directors of Telefonaktiebolaget L.M. Ericsson. Mr. Volpi earned a B.S. in Mechanical Engineering, an M.S. in Manufacturing Systems Engineering and an M.B.A. from Stanford University. We believe that Mr. Volpi is qualified to serve as a member of our board of directors because of his leadership experience, expertise as a venture capital investor and knowledge regarding the technology industry.

There are no family relationships among any of the directors or executive officers.

Certain members of our board of directors were elected pursuant to the provisions of a voting agreement. Under the terms of this voting agreement, the stockholders who are party to the voting agreement have agreed to vote their respective shares so as to elect: (1) one director designated by Sutter Hill Ventures, currently Mr. Speiser; (2) one director designated by Greylock XIII Limited Partnership, currently Mr. Bhusri; (3) one

director designated by Redpoint Ventures IV, L.P., currently not designated; (4) one director designated by Index Ventures VI (Jersey), L.P., currently Mr. Volpi; and (5) one director designated by the holders of a majority of shares held by key holders providing services to us, currently Mr. Colgrove. The holders of a majority of our preferred stock and common stock, voting together as a single class, further designated Dr. Dietzen and Mr. Slootman for election to our board of directors. The voting agreement will terminate upon the closing of this offering and none of our stockholders will have any special rights regarding the election or designation of members of our board of directors. There is no contractual arrangement by which Mr. Garrett and Dr. Sands were appointed to our board of directors.

Our board of directors will consist of eight members upon the closing of this offering. In accordance with the amended and restated certificate of incorporation to be filed in connection with this offering, immediately after this offering, our board of directors will be divided into three classes. At each annual general meeting of stockholders, the successors to directors whose terms then expire will be elected to serve from the time of election and qualification until the third annual meeting following the election. Our directors will be divided among the three classes as follows:

We expect that any additional directorships resulting from an increase in the number of directors will be distributed among the three classes so that, as nearly as possible, each class will consist of one-third of the directors. The division of our board of directors into three classes with staggered three-year terms may delay or prevent a change of our management or a change in control.

Under the listing requirements and rules of the NYSE, independent directors must comprise a majority of our board of directors as a listed company within one year of the closing of this offering.

Our board of directors has undertaken a review of its composition, the composition of its committees and the independence of each director. Based upon information requested from and provided by each director concerning his background, employment and affiliations, including family relationships, our board of directors has determined that Dr. Sands and Messrs. Bhusri, Garrett, Slootman and Volpi do not have any relationships that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director and that each of these directors is “independent” as that term is defined under the applicable rules and regulations of the SEC and the listing requirements and rules of the NYSE. Dr. Dietzen is not independent due to his position as our Chief Executive Officer, Mr. Colgrove is not independent due to his position as our Chief Technology Officer, and Mr. Speiser is not independent due to his stock option grant in exchange for his interim oversight of a portion of our research and development team from April 2013 to November 2013. Accordingly, a majority of our directors are independent, as required under applicable NYSE rules. In making this determination, our board of directors considered the current and prior relationships that each non-employee director has with our company and all other facts and circumstances our board of directors deemed relevant in determining their independence, including their beneficial ownership of our capital stock, and with respect to Mr. Bhusri, his position as the Chief Executive Officer of Workday, Inc., Mr. Slootman, his position as President and Chief Executive Officer of ServiceNow, Inc. and Mr. Garrett, his position as the Chief Financial Officer of Adobe Systems Incorporated. In the ordinary course of business, each of Workday, Inc., ServiceNow, Inc. and Adobe Systems Incorporated, have purchased our products and related services, and we have purchased products and related services from Workday, Inc., ServiceNow, Inc. and Adobe Systems Incorporated.

Our board of directors has established an audit committee, a compensation committee and a nominating and corporate governance committee. Our board of directors may establish other committees to facilitate the management of our business. The composition and functions of each committee are described below. Members serve on these committees until their resignation or until otherwise determined by our board of directors.

Our audit committee consists of Dr. Sands and Messrs. Volpi and Garrett. Our board of directors has determined that Dr. Sands and Messrs. Volpi and Garrett are independent under NYSE listing standards and Rule 10A-3(b)(1) of the Exchange Act. The chair of our audit committee is Mr. Garrett. Our board of directors has determined that Mr. Garrett is an “audit committee financial expert” within the meaning of SEC regulations. Our board of directors has also determined that each member of our audit committee can read and understand fundamental financial statements in accordance with applicable requirements. In arriving at these determinations, the board of directors has examined each audit committee member’s scope of experience and the nature of their employment in the corporate finance sector.

The primary purpose of the audit committee is to discharge the responsibilities of our board of directors with respect to our accounting, financial and other reporting and internal control practices and to oversee our independent registered accounting firm. Specific responsibilities of our audit committee include:

Our compensation committee consists of Messrs. Bhusri and Slootman. Our board of directors has determined that Messrs. Bhusri and Slootman are independent under NYSE listing standards, are “non-employee directors” as defined in Rule 16b-3 promulgated under the Exchange Act and are “outside directors” as that term is defined in Section 162(m) of the Code. The chair of our compensation committee is Mr. Bhusri.

The primary purpose of our compensation committee is to discharge the responsibilities of our board of directors to oversee our compensation policies, plans and programs and to review and determine the compensation to be paid to our executive officers, directors and other senior management, as appropriate. Specific responsibilities of our compensation committee include:

Our nominating and corporate governance committee consists of Dr. Sands and Mr. Volpi. The chair of our nominating and corporate governance committee is Dr. Sands. Each member of the nominating and corporate governance committee is independent within the meaning of applicable listing standards, is a non-employee director and is free from any relationship that would interfere with the exercise of his or her independent judgment, as determined by the board of directors in accordance with the applicable NYSE listing standards.

Specific responsibilities of our nominating and corporate governance committee include:

We have adopted a code of conduct that applies to all of our employees, officers, including our principal executive officer, principal financial officer and principal accounting officer or controller, or persons performing similar functions and agents and representatives, including directors and consultants. The full text of our code of conduct will be posted on our website at www.purestorage.com. We intend to disclose future amendments to certain provisions of our code of conduct, or waivers of such provisions applicable to any principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions, and our directors, on our website identified above.

None of the members of the compensation committee is currently, or has been at any time, one of our officers or employees. None of our executive officers currently serves, or has served during the last year, as a member of the board of directors or compensation committee of any entity that has one or more executive officers serving as a member of our board of directors or compensation committee.

The following table sets forth information concerning the compensation paid to our non-employee directors during the fiscal year ended January 31, 2015.

Dr. Sands and Messrs. Garrett and Slootman are the only non-employee directors who currently hold options to purchase shares of Class B common stock. We currently reimburse our directors for their reasonable out-of-pocket expenses in connection with attending board of directors and committee meetings. From time to time, we have granted stock options to certain of our non-employee directors as compensation for their services.

We intend to adopt a non-employee director compensation policy following the closing of this offering and on terms to be determined at a later date by our board of directors, pursuant to which our non-employee directors will be eligible to receive compensation for service on our board of directors and committees of our board of directors.

Our named executive officers, consisting of our principal executive officer and the next two most highly compensated executive officers as of January 31, 2015, were:

The following table presents all of the compensation awarded to or earned by our named executive officers during the fiscal year ended January 31, 2015.

The following table presents information regarding outstanding equity awards held by our named executive officers as of January 31, 2015. All awards were granted under our 2009 Equity Incentive Plan.

We are an “emerging growth company,” as defined in the JOBS Act. As an emerging growth company we will be exempt from certain requirements related to executive compensation, including, but not limited to, the requirements to hold a nonbinding advisory vote on executive compensation and to provide information relating to the ratio of total compensation of our Chief Executive Officer to the median of the annual total compensation of all of our employees, each as required by the Investor Protection and Securities Reform Act of 2010, which is part of the Dodd-Frank Wall Street Reform and Consumer Protection Act.

Our named executive officers did not participate in, or otherwise receive any benefits under, any pension or retirement plan sponsored by Pure during the fiscal year ended January 31, 2015.

Our named executive officers did not participate in, or earn any benefits under, a non-qualified deferred compensation plan sponsored by Pure during the fiscal year ended January 31, 2015.

We have offer letters with each of our executive officers other than Mr. Colgrove. The offer letters generally provide for at-will employment and set forth the executive officer’s initial base salary, initial equity grant

amount, eligibility for employee benefits and in some cases severance benefits upon a qualifying termination of employment. In addition, each of our named executive officers has executed of our standard proprietary information and inventions agreement. The key terms of employment with our executive officers are described below.

In September 2010, we entered into an offer letter agreement with Scott Dietzen, our Chief Executive Officer. Dr. Dietzen’s annual base salary as of January 31, 2015 was $250,000. Under the terms of his offer letter, Dr. Dietzen was granted an option to purchase 6,344,208 shares of Class B common stock with an exercise price of $0.1350 per share vesting monthly over 48 months from September 2010. In June 2012, Dr. Dietzen was granted an option to purchase 1,153,926 shares of Class B common stock with an exercise price of $0.49 per share vesting monthly over 30 months from September 2014. In January 2014, Dr. Dietzen was granted an option to purchase 300,000 shares of Class B common stock with an exercise price of $2.575 per share vesting monthly over 12 months from March 2017. In March 2014, Dr. Dietzen was granted an option to purchase 600,000 shares of Class B common stock with an exercise price of $2.98 per share vesting monthly over 24 months from April 2018. In September 2015, Dr. Dietzen was granted an option to purchase 83,333 shares of Class B common stock with an exercise price of $17.00 per share vesting monthly over 12 months from January 2020. In September 2015, Dr. Dietzen was granted an option to purchase 125,000 shares of Class B common stock with an exercise price of $17.00 per share vesting monthly over 12 months from January 2021. Dr. Dietzen is eligible to earn a bonus with an annual target of $100,000 paid in quarterly installments based on the achievement of certain Company and individual goals.

If Dr. Dietzen’s employment is terminated without cause or he terminates his employment for good reason, on or within 12 months following a change in control, all outstanding shares subject to his outstanding equity awards shall vest in full as of his termination date. Dr. Dietzen must sign a release of claims agreement as a pre-condition of receiving this termination benefit.

In November 2012, we entered into an offer letter agreement with David Hatfield, our President. Mr. Hatfield’s annual base salary as of January 31, 2015 was $300,000 and we paid him a signing and retention bonus of $250,000. Under the terms of his offer letter, Mr. Hatfield was granted (i) an option to purchase 3,347,054 shares of Class B common stock with an exercise price of $1.225 per share vesting monthly over 48 months from January 2013, (ii) an option to purchase 334,704 shares of Class B common stock with an exercise price of $1.225 vesting upon the achievement of certain milestones during the fiscal year ended January 31, 2014, which milestones the board determined were met, and (iii) an option to purchase 334,704 shares of Class B common stock with an exercise price of $1.225 vesting upon the achievement of certain milestones during the fiscal year ended January 31, 2015, which milestones the board determined were met. In January 2014, Mr. Hatfield was granted an option to purchase 400,000 shares of Class B common stock with an exercise price of $2.575 per share vesting monthly over 18 months from July 2016. In March 2014, Mr. Hatfield was granted an option to purchase 500,000 shares of Class B common stock with an exercise price of $2.98 per share vesting monthly over 24 months from January 2018. In March 2015, Mr. Hatfield was granted an option to purchase 150,000 shares of Class B common stock with an exercise price of $13.20 per share vesting monthly over 12 months from February 2020. In September 2015, Mr. Hatfield was granted an option to purchase 75,000 shares of Class B common stock with an exercise price of $17.00 per share vesting monthly over 10 months from March 2021. Mr. Hatfield is entitled to earn sales commissions based on his and our performance against annual targets with quarterly objectives, with a target commission of $300,000.

Pursuant to the terms of his offer letter, if Mr. Hatfield’s employment is terminated without cause or he terminates his employment for good reason, and other than as result of his death or disability, he will be eligible to receive certain severance benefits, the conditions of which vary depending on whether such termination occurs

in connection with a change in control. If termination of employment occurs absent a change in control, Mr. Hatfield will be eligible to receive continuation of his base salary and reimbursement of COBRA payments for a period of nine months and vesting of 25% of the then-unvested shares subject to any then-outstanding stock options. If termination of employment occurs on or within 18 months following a change in control, Mr. Hatfield will be eligible to receive the salary and COBRA payments as described in the preceding sentence and vesting of all of the then-unvested shares subject to any then outstanding stock options. Mr. Hatfield must sign a release of claims agreement as a pre-condition of receiving these termination benefits.

In August 2014, we entered into an offer letter agreement with Timothy Riitters, our Chief Financial Officer. Mr. Riitters’ annual base salary as of January 31, 2015 was $250,000. Under the terms of his offer letter, Mr. Riitters was granted an option to purchase 1,050,000 shares of Class B common stock with an exercise price of $9.65 per share with 25% of the shares vesting in August 2015 and the remainder vesting monthly over 36 months from August 2015, and an option to purchase 350,000 shares of Class B common stock with an exercise price of $9.65 per share vesting monthly over 24 months from August 2018. In March 2015, Mr. Riitters was granted an option to purchase 75,000 shares of Class B common stock with an exercise price of $13.20 per share vesting monthly over 12 months from September 2020. In September 2015, Mr. Riitters was granted an option to purchase 27,500 shares of Class B common stock with an exercise price of $17.00 per share vesting monthly over 12 months from January 2020. In September 2015, Mr. Riitters was granted an option to purchase 32,500 shares of Class B common stock with an exercise price of $17.00 per share vesting monthly over 12 months from January 2021. Mr. Riitters is eligible to earn a bonus with an annual target of $125,000, paid in quarterly installments, based on our achievement of our global bookings target for that quarter, as determined by our Chief Executive Officer.

Pursuant to the terms of his offer letter, if Mr. Riitters’ employment is terminated without cause or if he terminates his employment for good reason, and other than as result of his death or disability, he will be eligible to receive certain severance benefits, the conditions of which vary depending on whether such termination occurs in connection with a change in control. If termination of employment occurs absent a change in control, Mr. Riitters will be eligible to receive continuation of his base salary and reimbursement of COBRA payments for a period of nine months and he will continue to vest in his option for six months after the date of such termination. If termination of employment occurs on or within 12 months following a change in control, Mr. Riitters will be eligible to receive the salary and COBRA payments as described in the preceding sentence and vesting of all of the then-unvested shares subject to any then outstanding stock options. Mr. Riitters must sign a release of claims agreement as a pre-condition of receiving these termination benefits.

If Mr. Colgrove’s employment is terminated without cause or he terminates his employment for good reason on or within 18 months following a change in control, all unvested shares of stock subject to his outstanding equity awards shall immediately become fully vested. In connection with the formation of our Company, in June 2012, Mr. Colgrove was granted an option to purchase 1,153,926 shares of Class B common stock with an exercise price of $0.49 per share vesting monthly over 30 months from October 2013. In January 2014, Mr. Colgrove was granted an option to purchase 600,000 shares of Class B common stock with an exercise price of $2.575 per share vesting monthly over 24 months from April 2016. In March 2014, Mr. Colgrove was granted an option to purchase 600,000 shares of Class B common stock with an exercise price of $2.98 per share vesting monthly over 24 months from April 2018. In September 2015, Mr. Colgrove was granted an option to purchase 83,333 shares of Class B common stock with an exercise price of $17.00 per share vesting monthly over 12 months from January 2020. In September 2015, Mr. Colgrove was granted an option to purchase 125,000 shares of Class B common stock with an exercise price of $17.00 per share vesting monthly over 12 months from January 2021. Mr. Colgrove is eligible to earn a bonus with an annual target of $100,000 paid in quarterly installments based on the achievement of certain Company and individual goals.

In September 2015, we adopted a Change in Control Severance Benefit Plan, or the Severance Plan. Employees with the title of vice president or above, including each of our executive officers, are eligible participants under the Severance Plan. Under the Severance Plan, each eligible participant who suffers an involuntary termination within the period starting three months prior to a change in control and ending on the 12-month anniversary of the change in control, will receive (1) a lump sum cash payment equal to six months of the participant’s then-current base salary, (2) a lump sum cash payment equal to six months of the participant’s then-current annual target bonus, (3) up to six months of company-paid health insurance coverage and (4) accelerated vesting of 100% of the shares subject to each time-based vesting equity award held by such participant. These benefits are subject to a “best after tax” provision in the case the benefits would trigger excise tax penalties and loss of deductibility under Code Sections 280G and 4999. If an employee is an eligible participant and otherwise eligible to receive severance benefits under the Severance Plan that are of the same category and would otherwise duplicate the benefits available under the terms of any other agreement the participant has with us, the participant will receive severance benefits under such other agreement in lieu of any Severance Plan benefits to the extent such benefits are duplicative, and severance benefits will be provided under the Severance Plan only to the extent, if any, that Severance Plan benefits are not duplicative benefits.

We believe that our ability to grant equity-based awards is a valuable and necessary compensation tool that aligns the long-term financial interests of our employees, consultants and directors with the financial interests of our stockholders. In addition, we believe that our ability to grant options and other equity-based awards helps us to attract, retain and motivate employees, consultants and directors and encourages them to devote their best efforts to our business and financial success. The principal features of our equity incentive plans and our 401(k) plan are summarized below. These summaries are qualified in their entirety by reference to the actual text of the plans, which, other than the 401(k) plan, are filed as exhibits to the registration statement of which this prospectus is a part.

Our board of directors adopted our 2015 Equity Incentive Plan, or our 2015 Plan, in August 2015 and our stockholders approved our 2015 Plan in September 2015. Our 2015 Plan provides for the grant of incentive stock options to our employees and for the grant of nonstatutory stock options, stock appreciation rights, restricted stock awards, restricted stock unit awards, performance stock awards, performance cash awards, and other forms of stock awards to our employees, directors and consultants.

Authorized Shares. The maximum number of shares of our Class A common stock that may be issued under our 2015 Plan is 27,000,000. In addition, the number of shares of our Class A common stock reserved for issuance under our 2015 Plan will automatically increase on February 1st of each calendar year, from February 1, 2016 through February 1, 2025, in an amount equal to 5% of the total number of shares of our capital stock outstanding on the last day of the calendar month prior to the date of each automatic increase, or a lesser number of shares determined by our board of directors. The maximum number of shares of our Class A common stock that may be issued upon the exercise of incentive stock options under our 2015 Plan is 135,000,000.

Shares subject to stock awards granted under our 2015 Plan that expire or terminate without being exercised in full, or that are paid out in cash rather than in shares, do not reduce the number of shares available for issuance under our 2015 Plan. Additionally, shares issued pursuant to stock awards under our 2015 Plan that we repurchase or that are forfeited, as well as shares used to pay the exercise price of a stock award or to satisfy the tax withholding obligations related to a stock award, become available for future grant under our 2015 Plan.

Plan Administration. Our board of directors, or a duly authorized committee of our board of directors, will administer our 2015 Plan. Our board of directors may also delegate to one or more of our officers the authority to (1) designate employees (other than officers) to receive specified stock awards and (2) determine the number of shares subject to such stock awards. Under the 2015 Plan, our board of directors has the authority to determine the terms of awards, including recipients, the exercise, purchase or strike price of stock awards, if any, the number of shares subject to each stock award, the fair market value of a share of our Class A common stock, the vesting schedule applicable to the awards, together with any vesting acceleration, the form of consideration, if any, payable upon exercise or settlement of the award and the terms of the award agreements.

Section 162(m) Limits. At such time as necessary for compliance with Section 162(m) of the Code, no participant may be granted stock awards covering more than 3,000,000 shares (6,000,000 shares in the year of hire) of our common stock under the 2015 Plan during any calendar year pursuant to stock options, stock appreciation rights and other stock awards whose value is determined by reference to an increase over an exercise price or strike price of at least 100% of the fair market value of our common stock on the date of grant. Additionally, no participant may be granted in a calendar year a performance stock award covering more than 3,000,000 shares (6,000,000 shares in the year of hire) of our Class A common stock or a performance cash award having a maximum value in excess of $5,000,000 under our 2015 Plan. The limitations are designed to allow us to grant compensation that will not be subject to the $1,000,000 annual limitation on the income tax deductibility of compensation paid to a covered executive officer imposed by Section 162(m) of the Code.

Stock Options. Incentive stock options and nonstatutory stock options are granted pursuant to stock option agreements adopted by the plan administrator. The plan administrator determines the exercise price for stock options, within the terms and conditions of the 2015 Plan, provided that the exercise price of a stock option generally cannot be less than 100% of the fair market value of our common stock on the date of grant. Options granted under the 2015 Plan vest at the rate specified in the stock option agreement as determined by the plan administrator.

Restricted Stock Unit Awards. Restricted stock unit awards are granted pursuant to restricted stock unit award agreements adopted by the plan administrator. Restricted stock unit awards may be granted in consideration for any form of legal consideration that may be acceptable to our board of directors and permissible under applicable law. A restricted stock unit award may be settled by cash, delivery of stock, a combination of cash and stock as deemed appropriate by the plan administrator or in any other form of consideration set forth in the restricted stock unit award agreement. Additionally, dividend equivalents may be credited in respect of shares covered by a restricted stock unit award. Except as otherwise provided in the applicable award agreement, restricted stock units that have not vested will be forfeited upon the participant’s cessation of continuous service for any reason.

Restricted Stock Awards. Restricted stock awards are granted pursuant to restricted stock award agreements adopted by the plan administrator. A restricted stock award may be awarded in consideration for cash, check, bank draft or money order, past services to us or any other form of legal consideration that may be acceptable to our board of directors and permissible under applicable law. The plan administrator determines the terms and conditions of restricted stock awards, including vesting and forfeiture terms. If a participant’s service relationship with us ceases for any reason, we may receive through a forfeiture condition or a repurchase right any or all of the shares of Class A common stock held by the participant that have not vested as of the date the participant terminates service with us.

Stock Appreciation Rights. Stock appreciation rights are granted pursuant to stock appreciation grant agreements adopted by the plan administrator. The plan administrator determines the purchase price or strike price for a stock appreciation right, which generally cannot be less than 100% of the fair market value of our common stock on the date of grant. A stock appreciation right granted under the 2015 Plan vests at the rate specified in the stock appreciation right agreement as determined by the plan administrator.

Performance Awards. The 2015 Plan permits the grant of performance-based stock and cash awards that may qualify as performance-based compensation that is not subject to the $1,000,000 limitation on the income tax deductibility imposed by Section 162(m) of the Code. Our compensation committee may structure awards so that the stock or cash will be issued or paid only following the achievement of certain pre-established performance goals during a designated performance period.

Other Stock Awards. The plan administrator may grant other awards based in whole or in part by reference to our Class A common stock. The plan administrator will set the number of shares under the stock award and all other terms and conditions of such awards.

Changes to Capital Structure. In the event there is a specified type of change in our capital structure, such as a stock split, reverse stock split or recapitalization, appropriate adjustments will be made to (1) the class and maximum number of shares reserved for issuance under the 2015 Plan, (2) the class and maximum number of shares by which the share reserve may increase automatically each year, (3) the class and maximum number of shares that may be issued upon the exercise of incentive stock options, (4) the class and maximum number of shares subject to stock awards that can be granted in a calendar year (as established under the 2015 Plan pursuant to Section 162(m) of the Code) and (5) the class and number of shares and exercise price, strike price or purchase price, if applicable, of all outstanding stock awards.

Corporate Transactions. Our 2015 Plan provides that in the event of certain specified significant corporate transactions, including: (1) a sale of all or substantially all of our assets, (2) the sale or disposition of at least 90% of our outstanding securities, (3) the consummation of a merger or consolidation where we do not survive the transaction and (4) the consummation of a merger or consolidation where we do survive the transaction but the shares of our common stock outstanding prior to such transaction are converted or exchanged into other property by virtue of the transaction, unless otherwise provided in an award agreement or other written agreement between us and the award holder, each outstanding award will terminate and be cancelled to the extent not vested or exercised prior to the effective time of the transaction. The administrator may instead take one or more of the following actions with respect to such stock awards: (1) arrange for the assumption, continuation or substitution of a stock award by a successor corporation, (2) arrange for the assignment of any reacquisition or repurchase rights held by us to a successor corporation, (3) accelerate the vesting, in whole or in part, of the stock award and provide for its termination prior to the transaction, (4) arrange for the lapse, in whole or in part, of any reacquisition or repurchase rights held by us, (5) cancel or arrange for the cancellation of the stock award prior to the transaction in exchange for a cash payment, if any, determined by the board or (6) make a payment, in the form determined by the board, equal to the excess, if any, of the value of the property the participant would have received upon exercise of the awards prior to the transaction over any exercise price payable by the participant in connection with the exercise. The plan administrator is not obligated to treat all stock awards or portions of stock awards, even those that are of the same type, in the same manner.

In the event of a change in control, awards granted under the 2015 Plan will not receive automatic acceleration of vesting and exercisability, although this treatment may be provided for in an award agreement. Under the 2015 Plan, a change in control is defined to include (1) the acquisition by any person or company of more than 50% of the combined voting power of our then outstanding stock, (2) a merger, consolidation or similar transaction in which our stockholders immediately prior to the transaction do not own, directly or indirectly, more than 50% of the combined voting power of the surviving entity (or the parent of the surviving entity), (3) a sale, lease, exclusive license or other disposition of all or substantially all of our assets other than to an entity more than 50% of the combined voting power of which is owned by our stockholders and (4) our stockholders approve and the Board approves a plan of complete dissolution or liquidation or a complete dissolution or liquidation of Pure Storage otherwise occurs except for a liquidation into a parent corporation.

Transferability. A participant may not transfer stock awards under our 2015 Plan other than by will, the laws of descent and distribution or as otherwise provided under our 2015 Plan.

Plan Amendment or Termination. Our board of directors has the authority to amend, suspend or terminate our 2015 Plan, provided that such action does not materially impair the existing rights of any participant without such participant’s written consent. Certain material amendments also require the approval of our stockholders. No incentive stock options may be granted after the tenth anniversary of the date our board of directors adopted our 2015 Plan. No stock awards may be granted under our 2015 Plan while it is suspended or after it is terminated.

Acceleration Upon Death. Our 2015 Plan provides that if a participant dies while in a service relationship with us, all options and stock appreciation rights held by the participant as of the date of death shall vest and become exercisable in their entirety and shall be exercisable by the participant’s estate, by a person who acquired the right to exercise the option or stock appreciation right by bequest or inheritance, or by a person designated to exercise the option or stock appreciation right upon the participant’s death, but only within the period ending on the earlier of (i) the date 18 months following the date of death (or such longer or shorter period specified in the participant’s award agreement), and (ii) the expiration of the term of such option or stock appreciation right as set forth in the award agreement. Further, our plan administrator has determined that the award agreement for all other stock awards granted under our 2015 Plan will provide for full acceleration of the stock award in the event of the death of the participant holding such award while in a service relationship with us.

Our board of directors adopted, and our stockholders approved, our 2009 Equity Incentive Plan, or our 2009 Plan, in October 2009. Our 2009 Plan was amended most recently in February 2015. Our 2009 Plan allows for the grant of incentive stock options to our employees and any of our subsidiary corporations’ employees, and for the grant of nonstatutory stock options, restricted stock awards to our employees, officers, directors and consultants.

Our 2015 Plan will become effective upon the execution of the underwriting agreement related to this offering. As a result, we do not expect to grant any additional awards under the 2009 Plan following that date, although any awards granted under the 2009 Plan will remain subject to the terms of our 2009 Plan and applicable award agreements, until such outstanding awards that are stock options are exercised, or until they terminate or expire by their terms, and until any restricted stock awards become vested, terminate or are forfeited.

Authorized Shares. The maximum number of shares of our Class B common stock that may be issued under our 2009 Plan is 97,539,696. The maximum number of shares of Class B common stock that may be issued upon the exercise of Incentive Stock Options under our 2009 Plan is 195,079,392. Shares subject to stock awards granted under our 2009 Plan that expire or terminate without being exercised in full or are settled in cash do not reduce the number of shares available for issuance under our 2009 Plan. Additionally, shares issued pursuant to stock awards under our 2009 Plan that we repurchase or that are forfeited, as well as shares used to pay the exercise price of a stock award or to satisfy the tax withholding obligations related to a stock award, become available for future grant under our 2009 Plan, although such shares may not be subsequently issued pursuant to the exercise of an Incentive Stock Option.

Plan Administration. Our board of directors or a duly authorized committee of our board of directors administers our 2009 Plan and the stock awards granted under it. Under our 2009 Plan, the board of directors has the authority to determine and amend the terms of awards, including recipients, the exercise, purchase or strike price of stock awards, if any, the number of shares subject to each stock award, the vesting schedule applicable to the awards, together with any vesting acceleration, and the form of consideration, if any, payable upon exercise or settlement of the award and the terms of the award agreements for use under our 2009 Plan. The board may amend the 2009 Plan in these and other respects with the consent of any adversely affected participant, although certain material amendments to the 2009 Plan require stockholder approval.

Under the 2009 Plan, the board of directors also has the authority to modify outstanding awards, reprice any outstanding option, cancel any outstanding stock award in exchange for new stock awards, cash or other

consideration, or take any other action that is treated as a repricing under GAAP, although if any such action adversely affects a participant, the written consent of that participant is required.

Corporate Transactions. Our 2009 Plan provides that in the event of certain specified significant corporate transactions, including: (1) a sale of all or substantially all of our assets, (2) the sale or disposition of at least 90% of our outstanding securities, (3) the consummation of a merger or consolidation where we do not survive the transaction and (4) the consummation of a merger or consolidation where we do survive the transaction but the shares of our Class B common stock outstanding prior to such transaction are converted or exchanged into other property by virtue of the transaction, under otherwise provided in an award agreement or other written agreement between us and the award holder, each outstanding award will terminate and be cancelled to the extent not vested or exercised prior to the effective time of the transaction. The administrator may instead take one or more of the following actions with respect to such stock awards: (1) arrange for the assumption, continuation or substitution of a stock award by a successor corporation, (2) arrange for the assignment of any reacquisition or repurchase rights held by us to a successor corporation, (3) accelerate the vesting, in whole or in part, of the stock award and provide for its termination prior to the transaction, (4) arrange for the lapse, in whole or in part, of any reacquisition or repurchase rights held by us or (5) make a payment, in the form determined by the board, equal to the excess, if any, of the value of the property the participant would have received upon exercise of the stock award prior to the transaction over any exercise price payable by the participant in connection with the exercise. The plan administrator is not obligated to treat all stock awards, even those that are of the same type, or all participants in the same manner.

In the event of a change in control, awards granted under the 2009 Plan will not receive automatic acceleration of vesting and exercisability, although this treatment may be provided for in an award agreement. Under the 2009 Plan, a change in control is defined to include (1) the acquisition by any person of more than 50% of the combined voting power of our then outstanding stock, (2) a merger, consolidation or similar transaction in which our stockholders immediately prior to the transaction do not own, directly or indirectly, more than 50% of the combined voting power of the surviving entity (or the parent of the surviving entity), (3) our stockholders approve or our board of directors approves a plan of complete dissolution or liquidation or a complete dissolution or liquidation of Pure Storage otherwise occurs except for a liquidation into a parent corporation and (4) a sale, lease, exclusive license or other disposition of all or substantially all of the assets to an entity that did not previously hold more than 50% of the voting power of our stock.

Transferability. Under our 2009 Plan, the board of directors may provide for limitations on the transferability of awards, in its sole discretion. Option awards are generally not transferable other than by will or the laws of descent and distribution, except as otherwise provided under our 2009 Plan.

Plan Amendment or Termination. Our board of directors has the authority to amend, suspend or terminate our 2009 Plan, although certain material amendments require the approval of our stockholders, and amendments that would impair the rights of any participant require the consent of that participant.

Acceleration Upon Death. In September 2015, our compensation committee amended substantially all options held by participants who are in a service relationship with us to provide that if the participant holding one of such options dies while in a service relationship with us, all options held by the participant as of the date of death shall vest and become exercisable in their entirety and shall be exercisable by the participant’s estate, by a person who acquired the right to exercise the option by bequest or inheritance, or by a person designated to exercise the option upon the participant’s death, but only within the period ending on the earlier of (i) the date 18 months following the date of death (or such longer or shorter period specified in the participant’s option agreement) and (ii) the expiration of the term of such option as set forth in the option agreement.

Our board of directors adopted, and our stockholders approved, our 2015 Employee Stock Purchase Plan, or ESPP, in August 2015. The ESPP will become effective immediately upon the execution and delivery of the

underwriting agreement related to this offering. The purpose of the ESPP is to secure the services of new employees, to retain the services of existing employees and to provide incentives for such individuals to exert maximum efforts toward our success and that of our affiliates. The ESPP is intended to qualify as an “employee stock purchase plan” within the meaning of Section 423 of the Code for U.S. employees.

Share Reserve. Following this offering, the ESPP authorizes the issuance of 3,500,000 shares of our Class A common stock pursuant to purchase rights granted to our employees or to employees of any of our designated affiliates. The number of shares of our Class A common stock reserved for issuance will automatically increase on February 1st of each calendar year, from February 1, 2016 (assuming the ESPP becomes effective in fiscal year ending January 31, 2016) through February 1, 2025, by the lesser of (1) 1% of the total number of shares of our common stock outstanding on the last day of the calendar month prior to the date of the automatic increase, and (2) 3,500,000 shares; provided that prior to the date of any such increase, our board of directors may determine that such increase will be less than the amount set forth in clauses (1) and (2). As of the date hereof, no shares of our common stock have been purchased under the ESPP.

Administration. Our board of directors has delegated its authority to administer the ESPP to our compensation committee. The ESPP is implemented through a series of offerings under which eligible employees are granted purchase rights to purchase shares of our common stock on specified dates during such offerings. Under the ESPP, we may specify offerings with durations of not more than 27 months, and may specify shorter purchase periods within each offering. Each offering will have one or more purchase dates on which shares of our common stock will be purchased for employees participating in the offering. We currently intend to have 24-month offerings with multiple purchase periods (of approximately six months in duration) per offering, except that the first purchase period under our first offering may be shorter or longer than six months, depending on the date on which the underwriting agreement relating to this offering becomes effective. An offering under the ESPP may be terminated under certain circumstances.

Payroll Deductions. Generally, all regular employees, including executive officers, employed by us or by any of our designated affiliates, may participate in the ESPP and may contribute, normally through payroll deductions, up to 30% of their earnings (as defined in the ESPP) for the purchase of our common stock under the ESPP. Unless otherwise determined by our board of directors, common stock will be purchased for the accounts of employees participating in the ESPP at a price per share that is not less than the lesser of (1) 85% of the fair market value of a share of our common stock on the first date of an offering or (2) 85% of the fair market value of a share of our common stock on the date of purchase. For the initial offering, which we expect will commence upon the execution and delivery of the underwriting agreement relating to this offering, the fair market value on the first day of the offering period will be the price at which shares are first sold to the public.

Limitations. Employees may have to satisfy one or more of the following service requirements before participating in the ESPP, as determined by our board of directors, including: (1) being customarily employed for more than 20 hours per week, (2) being customarily employed for more than five months per calendar year or (3) continuous employment with us or one of our affiliates for a period of time (not to exceed two years). No employee may purchase shares under the ESPP at a rate in excess of $25,000 worth of our common stock based on the fair market value per share of our common stock at the beginning of an offering for each year such a purchase right is outstanding and the maximum number of shares an employee may purchase during a single purchase period is 3,000. Finally, no employee will be eligible for the grant of any purchase rights under the ESPP if immediately after such rights are granted, such employee has voting power over 5% or more of our outstanding capital stock measured by vote or value pursuant to Section 424(d) of the Code.

Changes to Capital Structure. In the event that there occurs a change in our capital structure through such actions as a stock split, merger, consolidation, reorganization, recapitalization, reincorporation, stock dividend, dividend in property other than cash, large nonrecurring cash dividend, liquidating dividend, combination of shares, exchange of shares, change in corporate structure or similar transaction, the board of directors will make appropriate adjustments to (1) the number of shares reserved under the ESPP, (2) the maximum number of shares

by which the share reserve may increase automatically each year, (3) the number of shares and purchase price of all outstanding purchase rights and (4) the number of shares that are subject to purchase limits under ongoing offerings.

Corporate Transactions. In the event of certain significant corporate transactions, including: (1) a sale of all or substantially all of our assets, (2) the sale or disposition of 90% of our outstanding securities, (3) the consummation of a merger or consolidation where we do not survive the transaction and (4) the consummation of a merger or consolidation where we do survive the transaction but the shares of our common stock outstanding immediately prior to such transaction are converted or exchanged into other property by virtue of the transaction, any then-outstanding rights to purchase our stock under the ESPP may be assumed, continued or substituted for by any surviving or acquiring entity (or its parent company). If the surviving or acquiring entity (or its parent company) elects not to assume, continue or substitute for such purchase rights, then the participants’ accumulated payroll contributions will be used to purchase shares of our common stock within 10 business days prior to such corporate transaction, and such purchase rights will terminate immediately.

ESPP Amendment or Termination. Our board of directors has the authority to amend or terminate our ESPP, provided that except in certain circumstances such amendment or termination may not materially impair any outstanding purchase rights without the holder’s consent. We will obtain stockholder approval of any amendment to our ESPP as required by applicable law or listing requirements.

We maintain a tax-qualified retirement plan that provides eligible U.S. employees with an opportunity to save for retirement on a tax advantaged basis. Eligible employees are able to defer eligible compensation up to certain Code limits, which are updated annually. We have the ability to make matching and discretionary contributions to the 401(k) plan but have not done so to date. Employee contributions are allocated to each participant’s individual account and are then invested in selected investment alternatives according to the participants’ directions. Employees are immediately and fully vested in their own contributions. The 401(k) plan is intended to be qualified under Section 401(a) of the Code, with the related trust intended to be tax exempt under Section 501(a) of the Code. As a tax-qualified retirement plan, contributions to the 401(k) plan are deductible by us when made, and contributions and earnings on those amounts are not taxable to the employees until withdrawn or distributed from the 401(k) plan.

We pay premiums for medical insurance and dental insurance for all full-time employees, including our named executive officers. We also pay premiums for life insurance and long-term disability insurance benefits for all full-time employees, including our named executive officers. We also offer high deductible plan options that include a healthcare flexible spending account component for all full-time employees, including our named executive officers. These benefits are available to all full-time employees, subject to applicable laws.

Upon the closing of this offering, our amended and restated certificate of incorporation will contain provisions that limit the liability of our current and former directors for monetary damages to the fullest extent permitted by Delaware law. Delaware law provides that directors of a corporation will not be personally liable for monetary damages for any breach of fiduciary duties as directors, except liability for:

Our amended and restated certificate of incorporation will authorize us to indemnify our directors, officers, employees and other agents to the fullest extent permitted by Delaware law. Our amended and restated bylaws will provide that we are required to indemnify our directors and officers to the fullest extent permitted by Delaware law and may indemnify our other employees and agents. Our amended and restated bylaws will also provide that, upon satisfaction of certain conditions, we shall advance expenses incurred by a director or officer in advance of the final disposition of any action or proceeding, and permit us to secure insurance on behalf of any officer, director, employee or other agent for any liability arising out of his or her actions in that capacity regardless of whether we would otherwise be permitted to indemnify him or her under the provisions of Delaware law. We have entered and expect to continue to enter into agreements to indemnify our directors, executive officers and other employees as determined by the board of directors. With certain exceptions, these agreements provide for indemnification for related expenses including, among other things, attorneys’ fees, judgments, fines and settlement amounts incurred by any of these individuals in any action or proceeding. We believe that these amended and restated certificate of incorporation and amended and restated bylaw provisions and indemnification agreements are necessary to attract and retain qualified persons as directors and officers. We also maintain customary directors’ and officers’ liability insurance.

The limitation of liability and indemnification provisions in our amended and restated certificate of incorporation and amended and restated bylaws may discourage stockholders from bringing a lawsuit against our directors for breach of their fiduciary duty. They may also reduce the likelihood of derivative litigation against our directors and officers, even though an action, if successful, might benefit us and other stockholders. Further, a stockholder’s investment may be adversely affected to the extent that we pay the costs of settlement and damage awards against directors and officers as required by these indemnification provisions.

At present, there is no pending litigation or proceeding involving any of our directors, officers or employees for which indemnification is sought and we are not aware of any threatened litigation that may result in claims for indemnification.

Insofar as indemnification for liabilities arising under the Securities Act of 1933, as amended, may be permitted for directors, executive officers or persons controlling us, we have been informed that, in the opinion of the SEC, such indemnification is against public policy as expressed in the Securities Act and is therefore unenforceable.

Our directors and officers may adopt written plans, known as Rule 10b5-1 plans, in which they will contract with a broker to buy or sell shares of our Class A and Class B common stock on a periodic basis. Under a Rule 10b5-1 plan, a broker executes trades pursuant to parameters established by the director or officer when entering into the plan, without further direction from them. The director or officer may amend a Rule 10b5-1 plan in some circumstances and may terminate a plan at any time. Our directors and executive officers also may buy or sell additional shares outside of a Rule 10b5-1 plan when they are not in possession of material nonpublic information, subject to compliance with the terms of our insider trading policy. Prior to 181 days after the date of this offering, the sale of any shares under such plan would be subject to the lock-up agreement that the director or officer has entered into with the underwriters.

The following is a summary of transactions since February 1, 2012 to which we have been a participant, in which the amount involved exceeded or will exceed $120,000 and in which any of our directors, executive officers or holders of more than 5% of our capital stock, or any member of the immediate family of the foregoing persons, had or will have a direct or indirect material interest, other than compensation and other arrangements that are described in the section titled “Executive Compensation” or that were approved by our compensation committee.

We believe the terms obtained or consideration that we paid or received, as applicable, in connection with the transactions described below were comparable to terms available or the amounts that would be paid or received, as applicable, in arm’s-length transactions.

In August 2012, we issued an aggregate of 10,584,066 shares of our Series D preferred stock at a purchase price of $3.7713 per share for an aggregate purchase price of $39.9 million. In August, September and October 2013 and June, September and November 2014, we issued an aggregate of 24,761,984 shares of our Series E preferred stock at a purchase price of $6.9315 per share for an aggregate purchase price of $171.6 million. In April 2014, we issued an aggregate of 14,307,603 shares of our Series F preferred stock at a purchase price of $15.7259 per share for an aggregate purchase price of $225.0 million. The following table summarizes purchases of preferred stock by holders of more than 5% of our capital stock and their affiliated entities and our directors. None of our executive officers purchased shares of preferred stock.

Upon the closing of this offering, each share of preferred stock will convert into one share of Class B common stock. For a description of the material rights and privileges of the preferred stock, please see Note 7 to our consolidated financial statements included elsewhere in this prospectus.

In November 2013, we repurchased an aggregate of 3,045,634 shares of our outstanding Class B common stock at a purchase price of $6.9315 per share for an aggregate purchase price of $21.1 million, of which 557,842 shares of common stock were repurchased from David Hatfield, our President, for an aggregate price of $3.9 million. Mr. Hatfield was the only executive officer to participate in this tender offer.

In July 2014, we repurchased an aggregate of 3,803,336 shares of our outstanding Class B common stock at a purchase price of $15.7259 per share for an aggregate purchase price of $59.8 million. The following table summarizes our repurchases of common stock from our directors and executive officers in this tender offer.

In April 2014, we entered into an amended and restated investor rights agreement with certain holders of our outstanding preferred stock, including Mike Speiser and Frank Slootman (members of our board of directors) and entities affiliated with Greylock Partners, Index Ventures, Redpoint Ventures and Sutter Hill Ventures, with certain registration rights, including the right to demand that we file a registration statement or request that their shares be covered by a registration statement that we are otherwise filing. Aneel Bhusri, Michelangelo Volpi and Mike Speiser, members of our board of directors, are affiliated with Greylock Partners, Index Ventures and Sutter Hill Ventures, respectively. Satish Dharmaraj, a former member of our board of directors, is affiliated with Redpoint Ventures. The investor rights agreement also provides these stockholders with information rights, which will terminate upon the closing of this offering, and a right of first refusal with regard to certain issuances of our capital stock, which will not apply to, and will terminate upon, the closing of, this offering. After the closing of this offering, the holders of 120,805,635 shares of our Class B common stock issuable upon conversion of outstanding preferred stock, will be entitled to rights with respect to the registration of their shares of Class B common stock under the Securities Act pursuant to this agreement. For a description of these registration rights, see the section titled “Description of Capital Stock—Registration Rights.”

We have entered into offer letters with our executive officers and have adopted a Change in Control Severance Benefit Plan. For more information regarding these arrangements, see the section titled “Executive Compensation—Employment, Severance and Change of Control Agreements.”

We have granted stock options to our executive officers and certain members of our board of directors. For a description of these stock options, see the section titled “Executive Compensation” and “Management—Non-Employee Director Compensation.”

In June 2012, we loaned Dr. Dietzen, our Chief Executive Officer, $282,710 in connection with his exercise of options to purchase 576,963 shares of Class B common stock. The loan was evidenced by a full recourse promissory note, which accrued interest at the rate of 1.59% per annum and was secured by a pledge of such exercised shares. The loan was repaid in full in September 2014.

In June 2012, we loaned Mr. Colgrove, our Chief Technology Officer, $282,710 in connection with his exercise of options to purchase 576,963 shares of Class B common stock. The loan was evidenced by a full recourse promissory note, which accrued interest at the rate of 1.59% per annum and was secured by a pledge of such exercised shares. The loan was repaid in full in September 2014.

In June 2013, we loaned Mr. Hatfield, our President, $2,050,069 in connection with his exercise of options to purchase 1,673,526 shares of Class B common stock. The loan was evidenced by a full recourse promissory note, which accrued interest at the rate of 0.95% per annum and was secured by a pledge of such exercised shares. The loan was repaid in full in July 2014.

In March 2014, we loaned Mr. Colgrove, our Chief Technology Officer, $772,500 in connection with his exercise of options to purchase 300,000 shares of Class B common stock. The loan was evidenced by a full recourse promissory note, which accrued interest at the rate of 1.84% per annum and was secured by a pledge of such exercised shares. The loan was repaid in full in September 2014.

Our amended and restated certificate of incorporation will contain provisions limiting the liability of directors, and our amended and restated bylaws will provide that we will indemnify each of our directors and officers to the


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MORGAN STANLEY		GOLDMAN, SACHS & CO.		BARCLAYS		ALLEN & COMPANY LLC


	Page
Executive Compensation		88
Certain Relationships and Related Person Transactions		100
Principal Stockholders		103
Description of Capital Stock		106
Shares Eligible for Future Sale		112
Material United States Federal Income Tax Consequences to Non-U.S. Holders of Our Class A Common Stock		115
Underwriting		119
Legal Matters		127
Experts		127
Where Can You Find Additional Information		127
Index to Financial Statements		F-1


	Shares Purchased					Total Consideration					Average Price Per Share
	Number		Percent			Amount		Percent			Average Price Per Share
Existing stockholders		160,056,764		86.5	%	$	566,320,933		57.1	%	$	3.54
New investors		25,000,000		13.5			425,000,000		42.9			17.00

Total		185,056,764		100.0	%	$	991,320,933		100.0	%


	Page
Prospectus Summary		1
Risk Factors		10
Special Note Regarding Forward Looking Statements		32
Industry and Other Data		33
Use of Proceeds		34
Dividend Policy		34
Capitalization		35
Dilution		37
Selected Consolidated Financial Data		39
Management’s Discussion and Analysis of Financial Condition and Results of Operations		41
A Note From the Founders and CEO		64
Business		65
Management		81


	As of July 31, 2015
	Actual			Pro Forma			Pro Forma As Adjusted⁽¹⁾
	(in thousands, except share and per share data)
Cash and cash equivalents	$	128,282		$	128,282		$	523,482

Convertible preferred stock, $0.0001 par value: 123,879,952 shares authorized, 122,280,679 shares issued and outstanding, actual; no shares authorized, issued and outstanding, pro forma and pro forma as adjusted	$	543,940		$	—		$	—

Stockholders’ (deficit) equity:
Preferred stock, $0.0001 par value: no shares authorized, issued and outstanding, actual; 20,000,000 shares authorized, no shares issued and outstanding, pro forma and pro forma as adjusted		—			—			—
Class A common stock, $0.0001 par value: 1,000 shares authorized, no shares issued and outstanding, actual; 2,000,000,000 shares authorized, no shares issued and outstanding, pro forma; 2,000,000,000 shares authorized, 25,000,000 shares issued and outstanding, pro forma as adjusted		—			—			3
Class B common stock, $0.0001 par value: 252,811,295 shares authorized, 37,776,085 shares issued and outstanding, actual; 250,000,000 shares authorized, 160,056,764 shares issued and outstanding, pro forma and pro forma as adjusted		4			16			16
Additional paid-in capital		66,508			610,436			1,005,633
Accumulated deficit		(454,540	)		(454,540	)		(454,540	)

Total stockholders’ (deficit) equity		(388,028	)		155,912			551,112

Total capitalization	$	155,912		$	155,912		$	551,112


Assumed initial public offering price per share			$	17.00
Pro forma net tangible book value per share as of July 31, 2015	$	0.93
Increase in pro forma net tangible book value per share attributable to new investors in this offering		2.01

Pro forma as adjusted net tangible book value per share after this offering				2.94

Dilution in net tangible book value per share to new investors in this offering			$	14.06


	Fiscal Year Ended January 31,						Six Months Ended July 31,
	2013		2014		2015		2014		2015
							(unaudited)
	(in thousands)
Cost of revenue—product	$	66	$	253	$	303	$	229	$	96
Cost of revenue—support		—		316		1,273		898		854
Research and development		752		11,477		22,512		15,147		10,429
Sales and marketing		342		9,014		22,466		17,361		5,980
General and administrative		256		506		6,479		4,508		3,300

Total stock-based compensation expense	$	1,416	$	21,566	$	53,033	$	38,143	$	20,659


	As of January 31,									As of July 31, 2015
	2013			2014			2015			As of July 31, 2015
										(unaudited)
	(in thousands)
Consolidated Balance Sheet Data:
Cash and cash equivalents	$	50,120		$	130,885		$	192,707		$	128,282
Working capital		52,621			134,779			218,533			147,554
Total assets		61,600			185,004			361,819			336,563
Deferred revenue, current and noncurrent portion		1,686			16,827			73,669			123,482
Convertible preferred stock		95,137			262,970			543,940			543,940
Total stockholders’ deficit		(39,150	)		(116,087	)		(299,830	)		(388,028	)


	Six Months Ended July 31,				Change
	2014		2015		$		%
	(dollars in thousands)
Product revenue	$	53,253	$	134,810	$	81,557		153%
Support revenue		6,159		23,928		17,769		289%

Total revenue	$	59,412	$	158,738	$	99,326		167%


	Three Months Ended
	April 30, 2014			July 31, 2014			October 31, 2014			January 31, 2015			April 30, 2015			July 31, 2015
	(unaudited)
	(in thousands)
Consolidated Statements of Operations Data:
Revenue:
Product	$	22,166		$	31,087		$	43,753		$	57,830		$	63,618		$	71,192
Support		2,482			3,677			5,436			8,020			10,459			13,469

Total revenue		24,648			34,764			49,189			65,850			74,077			84,661

Cost of revenue:
Product⁽¹⁾		9,793			12,815			16,676			24,141			22,712			27,641
Support⁽¹⁾		1,795			3,129			3,827			5,376			6,924			7,497

Total cost of revenue		11,588			15,944			20,503			29,517			29,636			35,138

Gross profit		13,060			18,820			28,686			36,333			44,441			49,523
Operating expenses:
Research and development ⁽¹⁾		12,807			27,726			22,863			29,311			31,682			38,188
Sales and marketing ⁽¹⁾		25,115			46,448			38,224			42,533			48,327			59,517
General and administrative ⁽¹⁾		4,925			9,494			7,415			10,520			12,692			15,227

Total operating expenses		42,847			83,668			68,502			82,364			92,701			112,932

Loss from operations		(29,787	)		(64,848	)		(39,816	)		(46,031	)		(48,260	)		(63,409	)
Other income (expense), net		(122	)		(185	)		(410	)		(695	)		(703	)		(371	)

Loss before provision for income taxes		(29,909	)		(65,033	)		(40,226	)		(46,726	)		(48,963	)		(63,780	)
Provision for income taxes		139			118			171			909			157			57

Net loss	$	(30,048	)	$	(65,151	)	$	(40,397	)	$	(47,635	)	$	(49,120	)	$	(63,837	)


	Fiscal Year Ended January 31,						Six Months Ended July 31,
	2014			2015			2014			2015
	(in thousands)
Net cash used in operating activities	$	(67,229	)	$	(143,695	)	$	(82,958	)	$	(44,490	)
Net cash used in investing activities		(15,307	)		(52,965	)		(28,874	)		(21,823	)
Net cash provided by financing activities		163,301			258,482			255,500			1,888


	Payment Due by Period
	Total		Less Than 1 Year		1-3 Years		3-5 Years		More Than 5 Years
	(in thousands)
Operating leases	$	30,523	$	7,872	$	12,719	$	8,965	$	967
Purchase obligations⁽¹⁾		626		313		313		—		—

Total	$	31,149	$	8,185	$	13,032	$	8,965	$	967


	Fiscal Year Ended January 31,				Six Months Ended July 31,
	2014		2015		2014		2015
					(unaudited)
Expected term (in years)		5.3 - 10.0		5.0 - 10.0		5.4 - 10.0		6.0 - 7.4
Expected volatility		62% - 69%		55% - 68%		62% - 68%		48% - 52%
Risk-free interest rate		0.8% - 2.6%		1.3% - 2.6%		2.0% - 2.5%		1.5% - 1.9%
Dividend rate		—		—		—		—
Fair value of common stock		$1.46 - $2.98		$4.81 - $12.65		$4.81 - $9.40		$14.12 - $18.16



BofA MERRILL LYNCH


Internet and Media	Consumer and Retail	Telecommunications and Service Providers
Lamar Media Rakuten Shutterfly SurveyMonkey	Nordstrom Peet’s Coffee & Tea Picard Frozen Foods Sierra Nevada Brewing Co.	Armor Defense LG CNS Softbank T-Mobile USA

Technology	Healthcare	Finance and Insurance
Avago Technologies Global Foundries Samsung Xerox	Adventist Health Cord Blood Registry Hanger Methodist Hospitals	Barclays PLC Farm Bureau of Michigan First Tennessee Bank Investec Asset Management

Software/SaaS	Energy	Government and Education
Dassault Systemes Intuit Symantec Xactly	Duke Energy Guadalupe Valley Electric Cooperative Legacy Reserves Source Gas	Carnegie Mellon University City of Austin Federal Deposit Insurance Corporation Sacramento City Unified School District


Name	Age	Position
*Executive Officers*

Scott Dietzen	53	Chief Executive Officer and Director

John “Coz” Colgrove	52	Founder, Chief Technology Officer and Co-Chairman

David Hatfield	47	President

Timothy Riitters	42	Chief Financial Officer

*Non-Employee Directors*

Mike Speiser	44	Co-Chairman

Aneel Bhusri⁽²⁾	49	Director

Mark Garrett⁽¹⁾	57	Director

Anita Sands⁽¹⁾⁽³⁾	39	Director

Frank Slootman⁽²⁾	56	Director

Michelangelo Volpi⁽¹⁾⁽³⁾	48	Director


Name	Option Awards⁽¹⁾
Aneel Bhusri	$	—
Satish Dharmaraj⁽²⁾		—
Mark Garrett⁽³⁾		—
Anita Sands⁽⁴⁾		—
Frank Slootman⁽⁵⁾		856,698	⁽⁶⁾
Mike Speiser⁽⁷⁾		—
Michelangelo Volpi		—


Name and Principal Position	Year		Salary			Option Awards⁽¹⁾		Nonequity Incentive Plan Compensation			All Other Compensation			Total
Scott Dietzen		2015	$	250,000		$	3,189,524	$	111,864	⁽²⁾	$	1,404,388	⁽³⁾	$	4,955,776
Chief Executive Officer

David Hatfield		2015		300,000			2,657,937		425,332	⁽⁴⁾		7,274,645	⁽⁵⁾		10,657,914
President

Timothy Riitters		2015		108,333	⁽⁶⁾		8,965,770		60,411	⁽²⁾		2,385	⁽⁷⁾		9,136,899
Chief Financial Officer


Name	Series D Preferred Stock		Series E Preferred Stock		Series F Preferred Stock		Aggregate Purchase Price
Entities affiliated with Redpoint Ventures⁽¹⁾		1,325,784		1,046,796		635,893	$	22,255,829
Entities affiliated with Greylock⁽²⁾		1,839,660		3,204,872		1,589,734		54,152,539
Entities affiliated with Index Ventures⁽³⁾		3,977,376		1,580,232		1,271,787		45,953,383
Entities and individuals affiliated with Sutter Hill Ventures⁽⁴⁾		2,918,502		5,110,470		2,543,574		86,429,857


Name	Shares of Common Stock		Purchase Price
Scott Dietzen⁽¹⁾		192,051	$	3,020,174
John Colgrove⁽²⁾		200,000		3,145,180
David Hatfield⁽³⁾		1,000,000		15,725,900