The following discussion and analysis of our financial condition and results of
operations should be read in conjunction with our condensed consolidated
financial statements and related notes included elsewhere in this Quarterly
Report on Form 10-Q and with our Management's Discussion and Analysis of
Financial Condition and Results of Operations included in our Annual Report on
Form 10-K for the year ended July 31, 2020, filed with the SEC. As discussed in
the section titled "Special Note Regarding Forward-Looking Statements," the
following 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 difference include, but
are not limited to, those identified below and those discussed in the section
titled "Risk Factors" and elsewhere in this Quarterly Report on Form 10-Q. Our
fiscal year end is July 31, and our fiscal quarters end on October 31, January
31, April 30 and July 31. Our fiscal year ended July 31, 2020 is referred to as
fiscal 2020 and our fiscal year ending July 31, 2021 is referred to as fiscal
2021.
Overview
Zscaler was incorporated in 2007, during the early stages of cloud adoption and
mobility, based on a vision that the internet would become the new corporate
network as the cloud becomes the new data center. We predicted that with rapid
cloud adoption and increasing workforce mobility, traditional perimeter security
approaches would provide inadequate protection for users and data and an
increasingly poor user experience. We pioneered a cloud platform, the Zscaler
Zero Trust Exchange, that represents a fundamental shift in the architectural
design and approach to networking and security.
We generate revenue primarily from sales of subscriptions to access our cloud
platform, together with related support services. We also generate an immaterial
amount of revenue from professional and other services, which consist primarily
of fees associated with mapping, implementation, network design and training.
Our subscription pricing is calculated on a per-user basis. We recognize
subscription and support revenue ratably over the life of the contract, which is
generally one to three years. As of July 31, 2020, we had expanded our
operations to over 4,500 customers across major industries, with users in 185
countries. Government agencies and some of the largest enterprises in the world
rely on us to help them transform to the cloud, including more than 450 of the
Forbes Global 2000 as of July 31, 2020.
We operate our business as one reportable segment. Our revenue has experienced
significant growth in recent periods. For nine months ended April 30, 2021 and
2020, our revenue was $476.0 million and $305.4 million, respectively. We have
incurred net losses in all periods since our inception. For the nine months
ended April 30, 2021 and 2020, our net loss was $181.0 million and $65.6
million, respectively. We expect we will continue to incur net losses for the
foreseeable future, as we continue to invest in our sales and marketing
organization to take advantage of our market opportunity, to invest in research
and development efforts to enhance the functionality of our cloud platform, to
incur additional compliance and other related costs as we operate as a public
company, and to address any legal matters and related accruals, as further
described in Note 10, Commitments and Contingencies, of our condensed
consolidated financial statements included elsewhere in this Quarterly Report on
Form 10-Q.
Impacts of COVID-19
In March 2020, the World Health Organization declared the COVID-19 outbreak to
be a pandemic. As a result of the COVID-19 pandemic, we have modified certain
aspects of our business, including restricting employee travel, requiring
employees to work from home, transitioning our employee onboarding and training
processes to remote or online programs, and canceling certain events and
meetings, among other modifications. We will continue to actively monitor and
evaluate the situation and may take further actions that alter our business
operations as may be required by federal, state or local authorities or that we
determine are in the best interests of our employees, customers, partners,
suppliers and stockholders. The effects of these operational modifications are
unknown and may not be known until future reporting periods. While we have not
experienced significant disruptions from the COVID-19 pandemic to date, we are
unable to accurately predict the
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full impact that COVID-19 will have due to numerous uncertainties, including the
duration of the outbreak, the widespread distribution and long-term efficacy of
vaccines and the availability of effective treatments, actions that may be taken
by governmental authorities, the impact on our business including our sales
cycle, sales execution and marketing efforts, and the impact to the business of
our customers, vendors and partners. For further discussion of the challenges
and risks we confront related to the COVID-19 pandemic, please refer to Part II,
Item 1A Risk Factors of this Quarterly Report on Form 10-Q.
Certain Factors Affecting Our Performance
Increased Internet Traffic and Adoption of Cloud-Based Software and Security
The adoption of cloud applications and infrastructure, explosion of internet
traffic volumes and shift to mobile-first computing generally, and the pace at
which enterprises adopt the internet as their corporate network in particular,
impact our ability to drive market adoption of our cloud platform. We believe
that most enterprises are in the early stages of a broad transformation to the
cloud. Organizations are increasingly relying on the internet to operate their
businesses, deploying new SaaS applications and migrating internally managed
line-of-business applications to the cloud. However, the growing dependence on
the internet has increased exposure to malicious or compromised websites, and
sophisticated hackers are exploiting the gaps left by legacy network security
appliances. To securely access the internet and transform their networks,
organizations must also make fundamental changes in their network and security
architectures. We believe that most organizations have yet to fully make these
investments. Since we enable organizations to securely transform to the cloud,
we believe that the imperative for organizations to securely move to the cloud
will increase demand for our cloud platform and broaden our customer base.
New Customer Acquisition
We believe that our ability to increase the number of customers, and more
significantly, customers in the Forbes Global 2000, on our cloud platform is an
indicator of our market penetration and our future business opportunities. As of
July 31, 2020 and 2019, we had over 4,500 and over 3,900 customers,
respectively, across all major geographies. As of July 31, 2020, we had over 450
of the Forbes Global 2000 as customers. Our ability to continue to grow these
numbers will increase our future opportunities for renewals and follow-on sales.
We believe that we have significant room to capture additional market share and
intend to continue to invest significantly in sales and marketing to engage our
prospective customers, increase brand awareness, further leverage our channel
partnerships and drive adoption of our solution.
Follow-On Sales
We typically expand our relationship with our customers over time. While most of
our new customers route all of their internet-bound web traffic through our
cloud platform, some of our customers initially use our services for specific
users or specific security functionality. We leverage our land-and-expand model
with the goal of generating incremental revenue, often within the term of the
initial subscription, by increasing sales to our existing customers in one of
three ways:
•expanding deployment of our cloud platform to cover additional users;
•upgrading to a more advanced Business, Transformation or Secure Transformation
suite; and
•selling a subscription to a new solution or product, for example selling a ZPA
subscription to a ZIA customer or a ZIA subscription to a ZPA customer.
Investing in Business Growth
Since our founding, we have invested significantly in growing our business. We
intend to continue (i) investing in our research and development organization
and our development efforts to offer new solutions on our cloud platform and
(ii) dedicating resources to update and upgrade our existing solutions. In
addition, we expect our general and administrative
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expenses to increase in absolute dollars in the foreseeable future, as we
continue to operate as a public company, and address any legal matters and
related accruals, as further described in Note 10, Commitments and
Contingencies, of our condensed consolidated financial statements included
elsewhere in this Quarterly Report on Form 10-Q.
We also intend to continue to invest significantly in sales and marketing to
grow and train our sales force, broaden our brand awareness and expand and
deepen our channel partner relationships. While these planned investments will
increase our operating expenses in the short term, we believe that over the long
term these investments will help us to expand our customer base and grow our
business. We also are investing in programs to increase recognition of our brand
and solutions, including joint marketing activities with our channel partners
and strategic partners.
While we expect our operating expenses to increase in absolute dollars in the
foreseeable future, as a result of these activities, we intend to balance these
investments in future growth with a continued focus on managing our results of
operations and investing judiciously. In the long term we anticipate that these
investments will positively impact our business and results of operations.
Key Business Metrics and Other Financial Measures
We review a number of operating and financial metrics, including the following
key metrics, to measure our performance, identify trends, formulate business
plans and make strategic decisions.
Dollar-Based Net Retention Rate
We believe that dollar-based net retention rate is a key metric to measure the
long-term value of our customer relationships because it is driven by our
ability to retain and expand the recurring revenue generated from our existing
customers. Our dollar-based net retention rate compares the recurring revenue
from a set of customers against the same metric for the prior 12-month period on
a trailing basis. Because our customers have repeat buying patterns and the
average term of our contracts is more than 12 months, we measure this metric
over a set of customers who were with us as of the last day of the same
reporting period in the prior fiscal year. Our dollar-based net retention rate
includes customer attrition. We have not experienced a material increase in
customer attrition rates in recent periods.
We calculate our dollar-based net retention rate as follows:
Denominator: To calculate our dollar-based net retention rate as of the end of a
reporting period, we first establish the annual recurrent revenue ("ARR") from
all active subscriptions as of the last day of the same reporting period in the
prior fiscal year. This effectively represents recurring dollars that we expect
in the next 12-month period from the cohort of customers that existed on the
last day of the same reporting period in the prior fiscal year.
Numerator: We measure the ARR for that same cohort of customers representing all
subscriptions based on confirmed customer orders booked by us as of the end of
the reporting period.
Dollar-based net retention rate is obtained by dividing the numerator by the
denominator. Our dollar-based net retention rate may fluctuate due to a number
of factors, including the performance of our cloud platform, our success in
selling bigger deals, including deals for all employees with our ZIA
Transformation bundle, faster upsells within a year, the
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timing and the rate of ARR expansion of our existing customers, potential
changes in our rate of renewals and other risk factors described elsewhere in
this Quarterly Report on Form 10-Q.
                                                        Trailing 12 Months           Trailing 12 Months
                                                       Ended April 30, 2021         Ended April 30, 2020

Dollar-based net retention rate                                126%                         119%


Non-GAAP Financial Measures
In addition to our results determined in accordance with U.S. GAAP, we believe
the following non-GAAP measures are useful in evaluating our operating
performance. We use the following non-GAAP financial information to evaluate our
ongoing operations and for internal planning and forecasting purposes. We
believe that non-GAAP financial information, when taken collectively, may be
helpful to investors because it provides consistency and comparability with past
financial performance. However, non-GAAP financial information is presented for
supplemental informational purposes only, has limitations as an analytical tool
and should not be considered in isolation or as a substitute for financial
information presented in accordance with U.S. GAAP. In particular, free cash
flow is not a substitute for cash used in operating activities. Additionally,
the utility of free cash flow as a measure of our liquidity is further limited
as it does not represent the total increase or decrease in our cash balance for
a given period. In addition, other companies, including companies in our
industry, may calculate similarly-titled non-GAAP measures differently or may
use other measures to evaluate their performance, all of which could reduce the
usefulness of our non-GAAP financial measures as tools for comparison. A
reconciliation is provided below for each non-GAAP financial measure to the most
directly comparable financial measure stated in accordance with U.S. GAAP.
Investors are encouraged to review the related U.S. GAAP financial measures and
the reconciliation of these non-GAAP financial measures to their most directly
comparable U.S. GAAP financial measures, and not to rely on any single financial
measure to evaluate our business.
Non-GAAP Gross Profit and Non-GAAP Gross Margin
We define non-GAAP gross profit as U.S. GAAP gross profit excluding stock-based
compensation expense and related payroll taxes and amortization expense of
acquired intangible assets. We define non-GAAP gross margin as non-GAAP gross
profit as a percentage of revenue.
                                              Three Months Ended April 30,                Nine Months Ended April 30,
                                                 2021                  2020                 2021                  2020

                                                                           (in thousands)
Gross profit                              $      137,427           $  85,945          $     371,187           $ 241,007
Add:
Stock-based compensation expense and               3,665               1,672                 10,239               4,734
related payroll taxes
Amortization expense of acquired                   1,503                 348                  4,510                 758
intangible assets
Non-GAAP gross profit                     $      142,595           $  87,965          $     385,936           $ 246,499
Gross margin                                          78   %              78  %                  78   %              79  %
Non-GAAP gross margin                                 81   %              80  %                  81   %              81  %


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Non-GAAP Income from Operations and Non-GAAP Operating Margin
We define non-GAAP income from operations as U.S. GAAP loss from operations
excluding stock-based compensation expense and related payroll taxes, certain
litigation-related expenses, amortization expense of acquired intangible assets
and asset impairment related to facility exit. We define non-GAAP operating
margin as non-GAAP income from operations as a percentage of revenue. The
excluded litigation-related expenses are professional fees and related costs
incurred by us in defending or settling against significant claims that we deem
not to be in the ordinary course of our business and, if applicable, accruals
related to estimated losses in connection with these claims. There are many
uncertainties and potential outcomes associated with any litigation, including
the expense of litigation, timing of such expenses, court rulings, unforeseen
developments, complications and delays, each of which may affect our results of
operations from period to period, as well as the unknown magnitude of the
potential loss relating to any lawsuit, all of which are inherently subject to
change, difficult to estimate and could adversely affect our results of
operations.
                                                  Three Months Ended April 30,                   Nine Months Ended April 30,
                                                     2021                  2020                  2021                       2020

                                                                                  (in thousands)
Loss from operations                          $      (43,850)          $ (20,514)         $     (140,415)               $ (69,069)

Add:


Stock-based compensation expense and related          65,177              29,082                 192,619                   73,656
payroll taxes
Litigation-related expenses                                -                  12                       -                   18,353
Amortization expense of acquired intangible            1,576                 641                   4,729                    2,062

assets


Asset impairment related to facility exit (1)              -                 430                     416                      746
Non-GAAP income from operations               $       22,903           $   9,651          $       57,349                $  25,748
U.S. GAAP operating margin                               (25)  %             (19) %                  (29)  %                  (23) %
Non-GAAP operating margin                                 13   %               9  %                   12   %                    8  %


___________
(1) Consists of asset impairment charges related to the relocation of our
corporate headquarters.
Change in Non-GAAP Measures Presentation
Effective August 1, 2020, the beginning of our fiscal year ending July 31, 2021,
we have presented employer payroll taxes related to employee equity award
transactions, which is a cash expense, as part of stock-based compensation
expense in our non-GAAP results. These payroll taxes have been excluded from our
non-GAAP results as they are tied to the timing and size of the exercise or
vesting of the underlying equity awards and the price of our common stock at the
time of vesting or exercise, which may vary from period to period independent of
the operating performance of our business. Prior period amounts have been recast
to conform to this presentation.
Free Cash Flow and Free Cash Flow Margin
Free cash flow is a non-GAAP financial measure that we calculate as net cash
provided by operating activities less purchases of property, equipment and other
assets and capitalized internal-use software. Free cash flow margin is
calculated as free cash flow divided by revenue. We believe that free cash flow
and free cash flow margin are useful indicators of liquidity that provide
information to management and investors about the amount of cash generated from
our operations that, after the investments in property, equipment and other
assets and capitalized internal-use software, can be used for strategic
initiatives, including investing in our business and strengthening our financial
position.
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Free cash flow includes the cyclical impact of inflows and outflows resulting
from contributions to our employee stock purchase plan for which the purchase
period of approximately six months ends in each of our second and fourth fiscal
quarter. As of April 30, 2021, the accrued employee payroll contributions to our
ESPP was $14.3 million, which will be used to purchase shares at the end of the
current purchase period ending on June 15, 2021. Payroll contributions
ultimately used to purchase shares will be reclassified to stockholders' equity
upon issuance of the shares during our fourth quarter of fiscal 2021.
In the nine months ended April 30, 2020, we made a $15.0 million payment to
Broadcom in connection with the settlement of the Symantec Cases. For further
information on this settlement refer to Note 10, Commitments and Contingencies,
of our condensed consolidated financial statements included elsewhere in this
Quarterly Report Form 10-Q.

                                              Three Months Ended April 30,                Nine Months Ended April 30,
                                                2021                  2020                  2021                  2020

                                                                           (in thousands)
Net cash provided by operating activities $      73,368           $  20,822          $      157,304           $  47,682

Less:


Purchases of property, equipment and            (14,812)             (9,694)                (34,215)            (24,793)
other assets
Capitalized internal-use software                (2,775)             (2,023)                 (7,047)             (6,296)
Free cash flow                            $      55,781           $   9,105          $      116,042           $  16,593
As a percentage of revenue:
Net cash provided by operating activities            42   %              19  %                   33   %              15  %

Less:


Purchases of property, equipment and                 (8)  %              (9) %                   (7)  %              (8) %
other assets
Capitalized internal-use software                    (2)  %              (2) %                   (2)  %              (2) %
Free cash flow margin                                32   %               8  %                   24   %               5  %


Calculated Billings
Calculated billings is a non-GAAP financial measure that we believe is a key
metric to measure our periodic performance. Calculated billings represents our
total revenue plus the change in deferred revenue in a period. Calculated
billings in any particular period aims to reflect amounts invoiced for
subscriptions to access our cloud platform, together with related support
services for our new and existing customers. We typically invoice our customers
annually in advance, and to a lesser extent quarterly in advance, monthly in
advance or multi-year in advance. Calculated billings increased $93.7 million,
or 71%, for the three months ended April 30, 2021 over the three months ended
April 30, 2020, and $246.7 million, or 70%, for the nine months ended April 30,
2021 over the nine months ended April 30, 2020. As calculated billings continues
to grow in absolute terms, we expect our calculated billings growth rate to
trend down over time. We also expect that calculated billings will be affected
by seasonality in terms of when we enter into agreements with customers; and the
mix of billings in each reporting period as we typically invoice customers
annually in advance, and to a lesser extent quarterly in advance, monthly in
advance or multi-year in advance.
                                             Three Months Ended April 30,                Nine Months Ended April 30,
                                                2021                  2020                 2021                  2020

                                                                          (in thousands)
Revenue                                  $       176,404          $ 110,524          $      476,026          $ 305,382
Add: Total deferred revenue, end of              495,434            300,791                 495,434            300,791

period

Less: Total deferred revenue, beginning (446,817) (280,022)

               (369,767)          (251,202)
of period
Calculated billings                      $       225,021          $ 131,293          $      601,693          $ 354,971


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Components of Results of Operations
Revenue
We generate revenue primarily from sales of subscriptions to access our cloud
platform, together with related support services. These subscription and related
support services accounted for approximately 97% and 98% of our revenue for the
three months ended April 30, 2021 and 2020, respectively, and approximately 97%
and 98% for the nine months ended April 30, 2021 and 2020, respectively. Our
contracts with our customers do not at any time provide the customer with the
right to take possession of the software that runs our cloud platform. Our
customers may also purchase professional services, such as mapping,
implementation, network design and training. Professional services account for
an immaterial portion of our revenue.
We generate revenue from contracts with typical durations ranging from one to
three years. We typically invoice our customers annually in advance, and to a
lesser extent quarterly in advance, monthly in advance or multi-year in advance.
We recognize revenue ratably over the life of the contract. Amounts that have
been invoiced are recorded in deferred revenue, or they are recorded in revenue
if the revenue recognition criteria have been met. Subscriptions that are
invoiced annually in advance or multi-year in advance represent a significant
portion of our short-term and long-term deferred revenue in comparison to
invoices issued quarterly in advance or monthly in advance. Accordingly, we
cannot predict the mix of invoicing schedules in any given period.
We generally experience seasonality in terms of when we enter into agreements
with our customers. We typically enter into a higher percentage of agreements
with new customers, as well as renewal agreements with existing customers, in
our second and fourth fiscal quarters. However, because we recognize revenue
ratably over the terms of our subscription contracts, a substantial portion of
the revenue that we report in each period is attributable to the recognition of
deferred revenue relating to agreements that we entered into during previous
periods. Consequently, increases or decreases in new sales or renewals in any
one period may not be immediately reflected as revenue for that period.
Accordingly, the effect of downturns in sales and market acceptance of our
platform, and potential changes in our rate of renewals, may not be fully
reflected in our results of operations until future periods.
Cost of Revenue
Cost of revenue includes expenses related to operating our cloud platform in
data centers, depreciation of our data center equipment, related overhead costs
and the amortization of our capitalized internal-use software. Cost of revenue
also includes employee-related costs, including salaries, bonuses, stock-based
compensation expense and employee benefit costs associated with our customer
support and cloud operations organizations. Cost of revenue also includes
overhead costs for facilities, IT, amortization and depreciation expense.
As our customers expand and increase the use of our cloud platform driven by
additional applications and connected devices, our cost of revenue will increase
due to higher bandwidth and data center expenses. However, we expect to continue
to benefit from economies of scale as our customers increase the use of our
cloud platform. We intend to continue to invest additional resources in our
cloud platform and our customer support organizations as we grow our business.
The level and timing of investment in these areas could affect our cost of
revenue in the future.
Gross Profit and Gross Margin
Gross profit, or revenue less cost of revenue, and gross margin, or gross profit
as a percentage of revenue, have been and will continue to be affected by
various factors, including the timing of our acquisition of new customers and
our renewals of and follow-on sales to existing customers, the average sales
price of our services, mix of services offered in our solutions, including new
product introductions, the data center and bandwidth costs associated with
operating our cloud platform, the
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extent to which we expand our customer support and cloud operations
organizations and the extent to which we can increase the efficiency of our
technology, infrastructure and data centers through technological improvements.
We expect our gross profit to increase in absolute dollars and our gross margin
to increase slightly over the long term, although our gross profit and gross
margin could fluctuate from period to period depending on the interplay of all
of the above factors.
Operating Expenses
Our operating expenses consist of sales and marketing, research and development
and general and administrative expenses. Personnel costs are the most
significant component of operating expenses and consist of salaries, benefits,
bonuses, stock-based compensation expense and, with respect to sales and
marketing expenses, sales commissions that are recognized as expenses over the
period of benefit. Operating expenses also include overhead costs for
facilities, IT, depreciation expense and amortization expense.
Sales and Marketing
Sales and marketing expenses consist primarily of employee compensation and
related expenses, including salaries, bonuses and benefits for our sales and
marketing employees, sales commissions that are recognized as expenses over the
period of benefit, stock-based compensation expense, marketing programs, travel
and entertainment expenses, expenses for conferences and events and allocated
overhead costs. We capitalize our sales commissions and associated payroll taxes
and recognize them as expenses over the estimated period of benefit. The amount
recognized in our sales and marketing expenses reflects the amortization of
costs previously deferred as attributable to each period presented in this
Quarterly Report on Form 10-Q, as described below under "Critical Accounting
Policies and Estimates."
We intend to continue to make significant investments in our sales and marketing
organization to drive additional revenue, further penetrate the market and
expand our global customer base. As a result, we expect our sales and marketing
expenses to continue to increase in absolute dollars and to be our largest
operating expense category for the foreseeable future. In particular, we will
continue to invest in growing and training our sales force, broadening our brand
awareness and expanding and deepening our channel partner relationships.
However, we expect our sales and marketing expenses to decrease as a percentage
of our revenue over the long term, although our sales and marketing expenses may
fluctuate as a percentage of our revenue from period to period due to the timing
and extent of these expenses.
Research and Development
Our research and development expenses support our efforts to add new features to
our existing offerings and to ensure the reliability, availability and
scalability of our solutions. Our cloud platform is software-driven, and our
research and development teams employ software engineers in the design, and the
related development, testing, certification and support, of these solutions.
Accordingly, a majority of our research and development expenses result from
employee-related costs, including salaries, bonuses and benefits, stock-based
compensation expense and costs associated with technology tools used by our
engineers. We expect our research and development expenses to continue to
increase in absolute dollars for the foreseeable future, as we continue to
invest in research and development efforts to enhance the functionality of our
cloud platform, improve the reliability, availability and scalability of our
platform and access new customer markets. However, we expect our research and
development expenses to decrease as a percentage of our revenue over the long
term, although our research and development expenses may fluctuate as a
percentage of our revenue from period to period due to the timing and extent of
these expenses.
General and Administrative
General and administrative expenses consist primarily of employee-related costs,
including salaries and bonuses, stock-based compensation expense and employee
benefit costs for our finance, legal, human resources and administrative
personnel, as well as professional fees for external legal services (including
certain litigation-related expenses), accounting
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and other related consulting services. The litigation-related expenses include
professional fees and related costs incurred by us in defending or settling
significant claims that we deem not to be in the ordinary course of our business
and, if applicable, accruals related to estimated losses in connection with
these claims. We expect our general and administrative expenses to increase in
absolute dollars for the foreseeable future, as we continue to incur compliance
costs, and other related costs necessary to operate as a public company, and due
to any legal matters and related accruals, as further described in Note 10,
Commitments and Contingencies, to our condensed consolidated financial
statements included elsewhere in this Quarterly Report on Form 10-Q. However, we
expect our general and administrative expenses to decrease as a percentage of
our revenue over the long term, although our general and administrative expenses
may fluctuate as a percentage of our revenue from period to period due to the
timing and extent of these expenses. In particular, litigation-related expenses
related to significant litigation claims may result in significant fluctuations
from period to period as they are inherently subject to change and difficult to
estimate.
Interest Expense
Interest expense consists primarily of amortization of debt discount and
issuance costs and recognition of contractual interest expense related to our
Notes issued in June 2020. See Note 9, Convertible Senior Notes, of our
condensed consolidated financial statements included elsewhere in this Quarterly
Report on Form 10-Q.
Interest Income
Interest income consists primarily of income earned on our cash equivalents and
short-term investments.
Other Income, Net
Other income, net consists primarily of foreign currency transaction gains and
losses.
Provision for Income Taxes
Our provision for income taxes consists primarily of income and withholding
taxes in the foreign jurisdictions in which we conduct business, offset by the
tax benefit for excess stock-based compensation deduction. We have not recorded
any U.S. federal income tax expense. In the United States, we have recorded
deferred tax assets for which we provide a full valuation allowance, which
includes net operating loss carryforwards and tax credits. We expect to maintain
this full valuation allowance for the foreseeable future as it is more likely
than not that some or all of those deferred tax assets may not be realized based
on our history of losses. Additionally, in the U.K., we have recorded deferred
tax assets for which we provide a full valuation allowance, which includes net
operating loss carryforwards. We expect to maintain this full valuation
allowance for the foreseeable future as it is more likely than not that some or
all of those deferred tax assets may not be realized based on our history of
losses.
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Results of Operations
The following tables set forth our results of operations for the periods
presented in dollars and as a percentage of our revenue:
                                              Three Months Ended April 30,                  Nine Months Ended April 30,
                                                     2021                   2020                   2021                  2020
                                                                                 (in thousands)
Revenue                                       $       176,404          $   

110,524 $ 476,026 $ 305,382 Cost of revenue(1) (2)

                                 38,977               24,579                  104,839              64,375
Gross profit                                          137,427               85,945                  371,187             241,007
Operating expenses:
Sales and marketing(1) (2)                            115,730               67,727                  323,022             188,759
Research and development(1) (2)                        40,952               24,117                  118,473              65,094
General and administrative(1) (3) (4)                  24,595               14,615                   70,107              56,223
Total operating expenses                              181,277              106,459                  511,602             310,076
Loss from operations                                  (43,850)             (20,514)                (140,415)            (69,069)
Interest income                                           593                1,528                    2,288               5,405
Interest expense(5)                                   (13,436)                   -                  (39,730)                  -
Other income, net                                          71                   70                      857                  28
Loss before income taxes                              (56,622)             (18,916)                (177,000)            (63,636)
Provision for income taxes                              1,837                  421                    4,006               1,931
Net loss                                      $       (58,459)         $   (19,337)         $      (181,006)         $  (65,567)


(1) Includes stock-based compensation expense and related payroll taxes as follows:
Cost of revenue                         $    3,665          $     1,672          $  10,239          $    4,734
Sales and marketing                         34,798               15,795            101,316              39,414
Research and development                    15,033                7,145             47,680              18,479
General and administrative                  11,681                4,470             33,384              11,029
Total                                   $   65,177          $    29,082          $ 192,619          $   73,656


(2) Includes amortization expense of acquired intangible assets as follows:
Cost of revenue                        $    1,503          $       348          $   4,510          $      758
Sales and marketing                            73                    8                219                  24
Research and development                        -                  285                  -               1,280
Total                                  $    1,576          $       641          $   4,729          $    2,062


(3) Includes asset impairment related
to facility exit as follows:            $        -          $      430

$ 416 $ 746

(4) Includes litigation-related expenses as follows: $ - $ 12 $ - $ 18,353

(5) Includes amortization of debt $ 13,077 $ -

$   38,649          $       -
discount and issuance costs as follows:


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                                                             Three Months Ended April 30,                            Nine Months Ended April 30,
                                                        2021                              2020                    2021                         2020
Revenue                                                 100%                              100%                    100%                         100%
Cost of revenue                                          22                                22                      22                           21
Gross margin                                             78                                78                      78                           79
Operating expenses
Sales and marketing                                      66                                62                      68                           62
Research and development                                 23                                22                      25                           21
General and administrative                               14                                13                      14                           19
Total operating expenses                                 103                               97                     107                           102
Operating margin                                        (25)                              (19)                    (29)                         (23)
Interest income                                           -                                 1                      -                             2
Interest expense                                         (7)                                -                     (8)                            -
Other income, net                                         -                                 1                      -                             -
Loss before income taxes                                (32)                              (17)                    (37)                         (21)
Provision for income taxes                                1                                 -                      1                             -
Net loss                                                (33)%                             (17)%                  (38)%                         (21)%



Comparison of the Three Months Ended April 30, 2021 and 2020
Revenue
                   Three Months Ended April 30,                  Change
                       2021                   2020            $            %

                                 (in thousands)
Revenue     $       176,404                $ 110,524      $ 65,880        60  %



Revenue increased by $65.9 million, or 60%, for the three months ended April 30,
2021, compared to the three months ended April 30, 2020. The increase in revenue
was driven by an increase in users and sales of additional subscriptions to
existing customers, which contributed $36.9 million in revenue, as reflected by
our dollar-based net retention rate of 126% for the trailing 12 months ended
April 30, 2021. The remainder of the increase was attributable to the addition
of new customers, as we increased our customer base by 21% from April 30, 2020
to April 30, 2021.
Cost of Revenue and Gross Margin
                         Three Months Ended April 30,                  Change
                        2021                        2020            $            %

                                       (in thousands)
Cost of revenue   $      38,977                  $ 24,579       $ 14,398        59  %
Gross margin                 78   %                    78  %


Cost of revenue increased by $14.4 million, or 59%, for the three months ended
April 30, 2021, compared to the three months ended April 30, 2020. The overall
increase in cost of revenue was driven primarily by the expanded use of our
cloud platform by existing and new customers, which led to an increase of $9.7
million for data center and equipment related costs for hosting and operating
our cloud platform. Additionally, our employee-related expenses increased by
$4.8 million, inclusive of an increase of $1.7 million in stock-based
compensation expense, driven primarily by a 35% increase in headcount in our
customer support and cloud operations organizations from April 30, 2020 to April
30, 2021.
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Gross margin remained unchanged from 78% for the three months ended April 30,
2020 compared to the three months ended April 30, 2021.
Operating Expenses
Sales and Marketing Expenses
                               Three Months Ended April 30,                   Change
                                    2021                    2020           $            %

                                             (in thousands)
Sales and marketing     $        115,730                 $ 67,727      $ 48,003        71  %


Sales and marketing expenses increased by $48.0 million, or 71%, for the three
months ended April 30, 2021, compared to the three months ended April 30, 2020.
The increase was primarily due to a 65% increase in headcount from April 30,
2020 to April 30, 2021, resulting in an increase of $46.9 million in
employee-related expenses, inclusive of an increase of $16.8 million in
stock-based compensation expense and an increase of $4.8 million in sales
commissions expense. The remainder of the increase was primarily attributable to
increased expenses of $1.8 million for facility and IT services. Expense
increases were partially offset by the decrease of $2.3 million for travel
expenses due to the COVID-19 pandemic.
Research and Development Expenses
                                  Three Months Ended April 30,                   Change
                                       2021                    2020           $            %

                                                (in thousands)
Research and development   $        40,952                  $ 24,117      $ 16,835        70  %


Research and development expenses increased by $16.8 million, or 70%, for the
three months ended April 30, 2021, compared to the three months ended April 30,
2020, as we continued to develop and enhance the functionality of our cloud
platform. The increase was primarily driven by an increase of $15.4 million in
employee-related expenses, inclusive of an increase of $6.7 million in
stock-based compensation expense, driven by a 53% increase in headcount from
April 30, 2020 to April 30, 2021. The remainder of the increase was primarily
attributable to increased expenses of $1.4 million in facility, software and
equipment related expenses to support our growth.
General and Administrative Expenses
                                     Three Months Ended April 30,                   Change
                                          2021                    2020           $           %

                                                   (in thousands)
General and administrative    $        24,595                  $ 14,615      $ 9,980        68  %


General and administrative expenses increased by $10.0 million, or 68%, for the
three months ended April 30, 2021, compared to the three months ended April 30,
2020. The overall increase was primarily due to an increase of $9.8 million in
employee-related expenses, inclusive of an increase of $6.9 million in
stock-based compensation expense, driven in part by a 36% increase in headcount
from April 30, 2020 to April 30, 2021.
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Interest Expense
                                Three Months Ended April 30,                       Change
                                       2021                       2020          $            %

                                              (in thousands)
Interest expense     $              (13,436)                     $  -      $ (13,436)      100  %


Interest expense increased by $13.4 million for the three months ended April 30,
2021, compared to the three months ended April 30, 2020, as a result of the
amortization of debt discount and contractual interest expense related to our
Notes. issued in June 2020. For further information on the Notes, refer to Note
9, Convertible Senior Notes, of our condensed consolidated financial statements
included elsewhere in this Quarterly Report on Form 10-Q.
Interest Income
                          Three Months Ended April 30,                  Change
                               2021                    2020          $           %

                                       (in thousands)
Interest income   $         593                      $ 1,528      $ (935)      (61) %


Interest income decreased by $0.9 million for the three months ended April 30,
2021, compared to the three months ended April 30, 2020. The decrease was
primarily driven by lower market interest rates on cash equivalents and
short-term investments.
Other Income, Net
                              Three Months Ended April 30,                    Change
                                     2021                      2020        $          %

                                           (in thousands)
Other income, net    $            71                          $ 70      $   1        (1) %


Other income, net remained approximately unchanged for the three months ended
April 30, 2021 compared to the three months ended April 30, 2020.
Provision for Income Taxes
                                       Three Months Ended April 30,                    Change
                                             2021                     2020          $           %

                                                    (in thousands)
Provision for income taxes    $           1,837                      $ 421      $ 1,416       336  %



Our provision for income taxes increased by $1.4 million for the three months
ended April 30, 2021, compared to the three months ended April 30, 2020. The
increase in the provision for income taxes was primarily due to the increase in
our non-U.S. pre-tax income and a tax benefit associated with the acquisition of
intangible assets from Cloudneeti Corporation ("Cloudneeti"), which reduced our
deferred tax asset and the related valuation allowance in the three months ended
April 30, 2020.
Our tax provision for interim periods is determined using an estimate of our
annual effective tax rate, adjusted for discrete items, if any, that arise
during the period. Each quarter, we update our estimate of the annual effective
tax rate, and if the estimated annual effective tax rate changes, we make a
cumulative adjustment in such period.
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Our quarterly tax provision, and estimate of our annual effective tax rate, is
subject to variation due to several factors, including variability in pre-tax
income or loss, the mix of jurisdictions to which such income relates, changes
in how we do business, and tax law developments. Our estimated annual effective
tax rate for the year differs from the U.S. statutory rate of 21% primarily due
to the benefit of a portion of our earnings being taxed at rates lower than the
U.S. statutory rate.
The realization of deferred tax assets is dependent upon the generation of
sufficient taxable income of the appropriate character in future periods. We
assess our ability to realize our deferred tax assets on a quarterly basis and
we establish a valuation allowance if it is more-likely-than-not that some
portion of the deferred tax assets will not be realized. We weigh all available
positive and negative evidence, including our earnings history and results of
recent operations, scheduled reversals of deferred tax liabilities, projected
future taxable income and tax planning strategies. Due to the weight of
objectively verifiable negative evidence, including our history of losses in
certain jurisdictions, we believe that it is more likely than not that our U.S.
federal, state, and U.K. deferred tax assets will not be realized. Accordingly,
we have maintained a valuation allowance on our U.S. federal, state, and U.K.
deferred tax assets.
Comparison of the Nine Months Ended April 30, 2021 and 2020
Revenue
                  Nine Months Ended April 30,                   Change
                      2021                  2020             $            %

                                (in thousands)
Revenue     $      476,026               $ 305,382      $ 170,644        56  %


Revenue increased by $170.6 million, or 56%, for the nine months ended April 30,
2021, compared to the nine months ended April 30, 2020. The increase in revenue
was driven by an increase in users and sales of additional subscriptions to
existing customers, which contributed $112.5 million in revenue, as reflected by
our dollar-based net retention rate of 126% for the trailing 12 months ended
April 30, 2021. The remainder of the increase was attributable to the addition
of new customers, as we increased our customer base by 21% from April 30, 2020
to April 30, 2021.
Cost of Revenue and Gross Margin
                         Nine Months Ended April 30,                  Change
                         2021                      2020            $            %

                                      (in thousands)
Cost of revenue   $      104,839                $ 64,375       $ 40,464        63  %
Gross margin                  78   %                  79  %


Cost of revenue increased by $40.5 million, or 63%, for the nine months ended
April 30, 2021, compared to the nine months ended April 30, 2020. The overall
increase in cost of revenue was driven primarily by the expanded use of our
cloud platform by existing and new customers, which led to an increase of $29.8
million for data center and equipment related costs for hosting and operating
our cloud platform. Additionally, our employee-related expenses increased by
$11.1 million, inclusive of an increase of $4.9 million in stock-based
compensation expense, driven primarily by a 35% increase in headcount in our
customer support and cloud operations organizations from April 30, 2020 to April
30, 2021.
Gross margin decreased from 79% during the nine months ended April 30, 2020 to
78% during the nine months ended April 30, 2021. The decline in gross margin is
partially due to the cost incurred for our increased use of public cloud
infrastructure to manage the increased ZPA traffic, which resulted from our
customers' employees working from home beginning in March 2020, and to a lesser
extent, to efficiently introduce and sell new solutions to our customers. While
the
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public cloud allows us to quickly meet increases in customer demand and to
accelerate the introduction of new solutions, using public cloud infrastructure
is significantly more expensive compared to using our data centers.
Additionally, the decline in gross margin is also attributable to an increase in
stock-based compensation expense and amortization expense of acquired intangible
assets.
Operating Expenses
Sales and Marketing Expenses
                              Nine Months Ended April 30,                   Change
                                  2021                  2020             $            %

                                            (in thousands)
Sales and marketing     $      323,022               $ 188,759      $ 134,263        71  %


Sales and marketing expenses increased by $134.3 million, or 71%, for the nine
months ended April 30, 2021, compared to the nine months ended April 30, 2020.
The increase was primarily due to a 65% increase in headcount from April 30,
2020 to April 30, 2021, resulting in an increase of $138.0 million in
employee-related expenses, inclusive of an increase of $56.2 million in
stock-based compensation expense and an increase of $15.5 million in sales
commissions expense. The remainder of the increase was primarily attributable to
increased expenses of $4.5 million for facility and IT services and $3.0 million
for professional services. Expense increases were partially offset by the
decrease of $9.3 million in travel expenses due to the COVID-19 pandemic and
$2.3 million in marketing and advertising expenses due to transition to less
expensive virtual events and increased reliance on digital marketing.
Research and Development Expenses
                                  Nine Months Ended April 30,                  Change
                                      2021                   2020           $            %

                                               (in thousands)
Research and development   $       118,473                $ 65,094      $ 53,379        82  %


Research and development expenses increased by $53.4 million, or 82%, for the
nine months ended April 30, 2021, compared to the nine months ended April 30,
2020, as we continued to develop and enhance the functionality of our cloud
platform. The increase was primarily driven by an increase of $49.6 million in
employee-related expenses, inclusive of an increase of $26.2 million in
stock-based compensation expense, driven by a 53% increase in headcount from
April 30, 2020 to April 30, 2021. The remainder of the increase was primarily
attributable to increased expenses of $3.2 million in facility, software and
equipment related expenses to support our growth and $1.8 million for
professional services.
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General and Administrative Expenses
                                     Nine Months Ended April 30,                  Change
                                         2021                   2020           $            %

                                                  (in thousands)
General and administrative    $       70,107                 $ 56,223      $ 13,884        25  %


General and administrative expenses increased by $13.9 million, or 25%, for the
nine months ended April 30, 2021, compared to the nine months ended April 30,
2020. The overall increase was primarily due to an increase of $29.2 million in
employee-related expenses, inclusive of an increase of $21.2 million in
stock-based compensation expense, driven in part by a 36% increase in headcount
from April 30, 2020 to April 30, 2021. The remainder of the increase was
primarily attributable to increased expenses of $1.7 million in professional
services. This increase is partially offset by a decrease of $17.9 million in
legal expenses, primarily attributable to a $15.0 million litigation settlement
payment to Broadcom during the six months ended January 31, 2020. For further
information on the Broadcom settlement refer to Note 10, Commitments and
Contingencies, of our condensed consolidated financial statements included
elsewhere in this Quarterly Report Form 10-Q.
Interest Expense
                               Nine Months Ended April 30,                       Change
                                      2021                      2020          $            %

                                             (in thousands)
Interest expense     $             (39,730)                    $  -      $ (39,730)      100  %


Interest expense increased by $39.7 million for the nine months ended April 30,
2021, compared to the nine months ended April 30, 2020, as a result of the
amortization of debt discount and recognition of contractual interest expense
related to our Notes issued in June 2020. For further information on the Notes,
refer to Note 9, Convertible Senior Notes, of our condensed consolidated
financial statements included elsewhere in this Quarterly Report on Form 10-Q.
Interest Income
                         Nine Months Ended April 30,                   Change
                              2021                   2020           $            %

                                       (in thousands)
Interest income   $        2,288                   $ 5,405      $ (3,117)      (58) %


Interest income decreased by $3.1 million for the nine months ended April 30,
2021, compared to the nine months ended April 30, 2020. The decrease was
primarily driven by lower market interest rates on cash equivalents and
short-term investments.
Other Income, Net
                              Nine Months Ended April 30,                    Change
                                    2021                     2020        $           %

                                          (in thousands)
Other income, net    $           857                        $ 28      $ 829       2,961  %

Other income, net increased by $0.8 million for the nine months ended April 30, 2021, compared to the nine months ended April 30, 2020. The increase was primarily driven by fluctuations in foreign currency transaction gains and losses.


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Provision for Income Taxes
                                     Nine Months Ended April 30,                   Change
                                          2021                   2020           $           %

                                                  (in thousands)
Provision for income taxes    $        4,006                   $ 1,931      $ 2,075       107  %



Our provision for income taxes increased by $2.1 million for the nine months
ended April 30, 2021, compared to the nine months ended April 30, 2020. The
increase in the provision for income taxes was primarily due to the increase in
our non-U.S. pre-tax income and a tax benefit associated with the acquisition of
intangible assets from Cloudneeti, which reduced our deferred tax asset and the
related valuation allowance in the nine months ended April 30, 2020.
Our tax provision for interim periods is determined using an estimate of our
annual effective tax rate, adjusted for discrete items, if any, that arise
during the period. Each quarter, we update our estimate of the annual effective
tax rate, and if the estimated annual effective tax rate changes, we make a
cumulative adjustment in such period.
Our quarterly tax provision, and estimate of our annual effective tax rate, is
subject to variation due to several factors, including variability in pre-tax
income or loss, the mix of jurisdictions to which such income relates, changes
in how we do business, and tax law developments. Our estimated annual effective
tax rate for the year differs from the U.S. statutory rate of 21% primarily due
to the benefit of a portion of our earnings being taxed at rates lower than the
U.S. statutory rate.
The realization of deferred tax assets is dependent upon the generation of
sufficient taxable income of the appropriate character in future periods. We
assess our ability to realize our deferred tax assets on a quarterly basis and
we establish a valuation allowance if it is more-likely-than-not that some
portion of the deferred tax assets will not be realized. We weigh all available
positive and negative evidence, including our earnings history and results of
recent operations, scheduled reversals of deferred tax liabilities, projected
future taxable income and tax planning strategies. Due to the weight of
objectively verifiable negative evidence, including our history of losses in
certain jurisdictions, we believe that it is more likely than not that our U.S.
federal, state, and U.K. deferred tax assets will not be realized. Accordingly,
we have maintained a valuation allowance on our U.S. federal, state, and U.K.
deferred tax assets.
Liquidity and Capital Resources
As of April 30, 2021, our principal sources of liquidity were cash, cash
equivalents and short-term investments totaling $1,467.6 million which were held
for working capital and general corporate purposes. Our cash equivalents and
investments consist of highly liquid investments in money market funds, U.S.
treasury securities, U.S. government agency securities and corporate debt
securities.
In June 2020, we completed the private offering of our Notes with an aggregate
principal amount of $1,150.0 million. The total net proceeds from the offering,
after deducting initial purchase discount and issuance costs, was $1,130.5
million. In connection with the Notes, we entered into capped call transactions
which are expected to reduce the potential dilution of our common stock upon any
conversion of the Notes and/or offset any cash payments we could be required to
make in excess of the principal amount of converted Notes. We used an aggregate
amount of $145.2 million of the net proceeds of the Notes to purchase the Capped
Calls.
We have generated significant losses from operations, as reflected in our
accumulated deficit of $520.6 million as of April 30, 2021. We expect to
continue to incur operating losses and have in the past and may in the future
generate negative cash flows due to expected investments to grow our business,
including potential business acquisitions and other strategic transactions.
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We believe that our existing cash, cash equivalents and short-term investments
will be sufficient to fund our operating and capital needs for at least the next
12 months from the issuance of our financial statements. Our foreseeable cash
needs, in addition to our recurring operating costs, include our expected
capital expenditures to support expansion of our infrastructure and workforce,
lease obligations, purchase commitments, potential business acquisitions and
other strategic transactions. Our assessment of the period of time through which
our financial resources will be adequate to support our operations is a
forward-looking statement and involves risks and uncertainties. Our actual
results could vary as a result of, and our future capital requirements, both
near-term and long-term, will depend on, many factors, including our growth
rate, the timing and extent of spending to support our research and development
efforts, the expansion of sales and marketing and international operating
activities, the timing of new introductions of solutions or features, and the
continuing market acceptance of our services, and the impact of COVID-19
pandemic to our and our customers', vendors' and partners' businesses. We have
and may in the future enter into arrangements to acquire or invest in
complementary businesses, services and technologies, including intellectual
property rights. We have based this estimate on assumptions that may prove to be
wrong, and we could use our available capital resources sooner than we currently
expect. Additionally, some of the factors that may influence our operations are
not within our control, such as general economic conditions and the length and
severity of the COVID-19 pandemic. 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, or if we cannot
expand our operations or otherwise capitalize on our business opportunities
because we lack sufficient capital, our business, operating results and
financial condition would be adversely affected.
We typically invoice our customers annually in advance, and to a lesser extent
quarterly in advance, monthly in advance or multi-year in advance. Therefore, a
substantial source of our cash is from such prepayments, which are included on
our consolidated balance sheets as a contract liability. Deferred revenue
consists of the unearned portion of billed fees for our subscriptions, which is
subsequently recognized as revenue in accordance with our revenue recognition
policy. As of April 30, 2021, we had deferred revenue of $495.4 million, of
which $445.8 million was recorded as a current liability and is expected to be
recorded as revenue in the next 12 months, provided all other revenue
recognition criteria have been met. Subscriptions that are invoiced annually in
advance or multi-year in advance contribute significantly to our short-term and
long-term deferred revenue in comparison to our invoices issued quarterly in
advance or monthly in advance. Accordingly, we cannot predict the mix of
invoicing schedules in any given period.
The following table summarizes our cash flows for the periods presented:
                                                   Nine Months Ended April 30,
                                                       2021                  2020

                                                          (in thousands)
Net cash provided by operating activities    $       157,304              $ 

47,682


Net cash used in investing activities        $      (212,788)             $ 

(19,462)


Net cash provided by financing activities    $        20,223              $ 

17,888




Operating Activities
Net cash provided by operating activities during the nine months ended April 30,
2021 was $157.3 million, which resulted from a net loss of $181.0 million,
adjusted for non-cash charges of $294.6 million and net cash inflows of $43.7
million from changes in operating assets and liabilities. Non-cash charges
primarily consisted of $178.5 million for stock-based compensation expense,
$38.6 million for amortization of debt discount and issuance costs, $28.6
million for amortization of deferred contract acquisition costs, $21.4 million
for depreciation and amortization expense, $15.2 million for non-cash operating
lease costs, $8.6 million for amortization (accretion) of investments purchased
at a premium (discount) and $4.7 million for amortization expense of acquired
intangible assets. Net cash inflows from changes in operating assets and
liabilities were primarily the result of an increase of $128.4 million in
deferred revenue from advanced invoicing in
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accordance with our subscription contracts, an increase of $11.6 million in
accrued compensation, an increase of $6.4 million in accounts payable, an
increase of $3.0 million in accrued expenses, other current and noncurrent
liabilities, and a decrease of $1.8 million in prepaid expenses, other current
and noncurrent assets. Net cash inflows were partially offset by cash outflows
resulting from an increase of $71.1 million in deferred contract acquisition
costs, as our sales commission payments increased due to addition of new
customers and expansion of our existing customer subscriptions, an increase of
$20.1 million in accounts receivable primarily due to timing of billings and
collections and a decrease of $16.2 million in operating lease liabilities.
Net cash provided by operating activities during the nine months ended April 30,
2020 was $47.7 million, which resulted from a net loss of $65.6 million, which
included a $15.0 million litigation settlement payment to Broadcom in January
2020 (refer to Note 10, Commitments and Contingencies, of our condensed
consolidated financial statements included elsewhere in this Quarterly Report on
Form 10-Q), adjusted for non-cash charges of $111.7 million and net cash inflows
of $1.5 million from changes in operating assets and liabilities. Non-cash
charges primarily consisted of $70.0 million for stock-based compensation
expense, $17.7 million for amortization of deferred contract acquisition costs,
$12.3 million for depreciation and amortization expense, $9.6 million for
non-cash operating lease costs and $2.1 million for amortization expense of
acquired intangible assets and $0.7 million for impairment of assets, partially
offset by $0.6 million for deferred income taxes and $0.5 million for accretion
of purchased discounts, net of amortization of investment premiums. Net cash
inflows from changes in operating assets and liabilities were primarily the
result of an increase of $49.6 million in deferred revenue from advanced
invoicing in accordance with our subscription contracts and an increase of $12.7
million in accrued compensation an increase of $1.9 million in accounts payable
and increase of $0.7 million in accrued expenses, other current and noncurrent
liabilities. Net cash inflows were partially offset by cash outflows resulting
from an increase of $32.2 million in deferred contract acquisition costs, as our
sales commission payments increased due to addition of new customers and
expansion of our existing customer subscriptions, an increase of $13.4 million
in prepaid expenses, other current and noncurrent assets to balance our working
capital requirements, an increase of $12.2 million in accounts receivable
primarily due to timing of billings and collections and a decrease of $5.5
million in operating lease liabilities primarily due to lease payments, net of
tenant incentives.
Investing Activities
Net cash used in investing activities during the nine months ended April 30,
2021 of $212.8 million was primarily attributable to the purchases of short-term
investments of $724.5 million, capital expenditures of $41.3 million to support
the growth of our cloud platform, $29.4 million, net of cash acquired, for the
acquisition of Trustdome and $2.9 million for investments in privately held
companies. These activities were partially offset by proceeds from the
maturities and sales of short-term investments of $585.2 million.
Net cash used in investing activities during the nine months ended April 30,
2020 of $19.5 million was primarily attributable to the purchase of short-term
investments of $202.8 million, capital expenditures of $31.1 million to support
the growth of our cloud platform and $8.9 million, net of cash acquired, for the
acquisition of Cloudneeti. These activities were partially offset by proceeds
from the maturities and sales of short-term investments of $209.2 million.
Financing Activities
Net cash provided by financing activities of $20.2 million during the nine
months ended April 30, 2021 was attributable to $13.9 million in proceeds from
the exercise of stock options and $8.6 million in proceeds from the issuance of
common
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stock under the ESPP. These activities were partially offset by a payment of
deferred merger consideration related to a business acquisition made in a prior
fiscal year of $2.3 million.
Net cash provided by financing activities of $17.9 million during the nine
months ended April 30, 2020 was attributable to $12.6 million in proceeds from
the exercise of stock options and $5.3 million in proceeds from the issuance of
common stock under the ESPP.
Contractual Obligations and Commitments
During the nine months ended April 30, 2021, there have been no material changes
outside the ordinary course of business to our contractual obligations and
commitments from those disclosed in Management's Discussion and Analysis of
Financial Condition and Results of Operations, set forth in Part II, Item 7, of
our Fiscal 2020 Form 10-K.
Off-Balance Sheet Arrangements
As of April 30, 2021, we did not have any relationships with unconsolidated
organizations or financial partnerships, such as structured finance or special
purpose entities, which would have been established for the purpose of
facilitating off-balance sheet arrangements or other contractually narrow or
limited purposes.
As of April 30, 2021, we had outstanding irrevocable standby unsecured letters
of credits for an aggregate value of $3.0 million with a bank, which serve as
security under certain real estate leases.
Critical Accounting Policies and Estimates
Our financial statements are prepared in accordance with U.S. GAAP. The
preparation of these financial statements requires us to make estimates and
assumptions that affect the reported amounts of assets, liabilities, revenue and
expenses, as well as 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. We
refer to accounting estimates of this type as critical accounting policies and
estimates, which we discuss below.
Our significant accounting policies are discussed in Note 1, Business and
Summary of Significant Accounting Policies of our consolidated financial
statements included in our Fiscal 2020 Form 10-K. There have been no significant
changes to these policies for the nine months ended April 30, 2021, except as
described in Note 1, Business and Summary of Significant Accounting Policies, of
our condensed consolidated financial statements included elsewhere in this
Quarterly Report on Form 10-Q.
Recently Issued Accounting Pronouncements
Refer to Note 1, Business and Summary of Significant Accounting Policies, of our
condensed consolidated financial statements included elsewhere in this Quarterly
Report on Form 10-Q for more information regarding recently issued accounting
pronouncements.
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