The following discussion and analysis of our financial condition and results of
operations should be read in conjunction with (1) our consolidated financial
statements and related notes included elsewhere in this Quarterly Report on Form
10-Q, or this Form 10-Q, and (2) our consolidated financial statements, related
notes and management's discussion and analysis of financial condition and
results of operations in our Annual Report on Form 10-K for the year ended
December 31, 2019, or the 10-K, filed with the Securities and Exchange
Commission on February 28, 2020. This Form 10-Q contains forward-looking
statements within the meaning of Section 27A of the Securities Act of 1933, as
amended, or the Securities Act and Section 21E of the Securities Exchange Act of
1934, as amended, or the Exchange Act. These statements are often identified by
the use of words such as "anticipate," "believe," "continue," "could,"
"estimate," "expect," "intend," "may," "plan," "project," "will," "would" or the
negative or plural of these words or similar expressions or variations. Such
forward-looking statements are subject to a number of risks, uncertainties,
assumptions and other factors that could cause actual results and the timing of
certain events to differ materially from future results expressed or implied by
the forward-looking statements. Factors that could cause or contribute to such
differences include, but are not limited to, those identified herein, and those
discussed in the section titled "Risk Factors," set forth in Part II, Item 1A of
this Form 10-Q and in our other filings with the SEC. Such risks and
uncertainties may be amplified by the COVID-19 pandemic and its potential impact
on our business and the global economy. You should not rely upon forward-looking
statements as predictions of future events. Furthermore, such forward-looking
statements speak only as of the date of this report. Except as required by law,
we undertake no obligation to update any forward-looking statements to reflect
events or circumstances after the date of such statements.
Overview
We are a leading provider of solutions for a new category of cybersecurity that
we call Cyber Exposure. Cyber Exposure is a discipline for managing, measuring
and comparing cybersecurity risk in the digital era. Our enterprise platform
enables broad visibility into an organization's cyber exposure across the modern
attack surface and deep insights that help organizations translate vulnerability
data into business insights to understand and reduce their cybersecurity risk.
Our enterprise platform offerings include Tenable.io, which is our software as a
service, or SaaS, offering and Tenable.sc, which is our on-premises offering,
both of which provide organizations with applications purpose-built for areas of
both traditional and modern attack surfaces, including IT infrastructure and
applications, cloud environments and industrial Internet of things, or IoT, and
operational technology, or OT, environments. These applications are designed
with views, workflows and dashboards to help identify vulnerabilities, internal
and regulatory compliance violations, misconfigurations and other cybersecurity
issues, prioritize these issues for remediation, and provide insightful
remediation guidance.
Our enterprise platform offerings are primarily sold on a subscription basis
with a one-year term. Our subscription terms are generally not longer than three
years. These offerings are typically prepaid in advance. To a lesser extent, we
generate ratably recognizable revenue from perpetual licenses and from the
related ongoing maintenance.
We sell and market our products and services through our field sales force that
works closely with our channel partners, which includes a network of
distributors and resellers, in developing sales opportunities. We use
a two-tiered channel model whereby we sell our enterprise platform offerings to
our distributors, which in turn sell to our resellers, which then sell to end
users, which we call customers.
Many of our enterprise platform customers initially use either our free or paid
version of Nessus, one of the industry's most widely deployed vulnerability
assessment solutions. Nessus, which is the technology that underpins our
enterprise platform offerings, is designed to quickly and accurately identify
vulnerabilities, configuration and compliance issues and malware. Our free
version of Nessus, Nessus Essentials, allows for vulnerability assessment over a
limited number of IP addresses. We believe many of our Nessus customers begin
with Nessus Essentials and subsequently upgrade to Nessus Professional, the paid
version of Nessus; however, we expect many users to continue to use Nessus
Essentials.
There have been more than two million cumulative unique downloads, which refers
to an individual email address utilized to register for the use of Nessus
Essentials. We believe that the cumulative number of unique downloads of the
free version of Nessus is representative of our brand recognition among
cybersecurity professionals and that continued
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growth in this number suggests broader awareness among potential customers.
While we believe that the cumulative number of unique downloads may provide an
indication of the growth and scale of our thought leadership and brand
awareness, we do not expect this metric to necessarily correlate to future
revenue growth opportunities, and we do not consider this metric a measure of
our operating performance.
We have experienced rapid growth in recent years. Revenue in the three months
ended September 30, 2020 and 2019 and the nine months ended September 30, 2020
and 2019 was $112.3 million, $91.9 million, $322.1 million and $257.5 million,
respectively, representing year-over-year growth of 22% and 25% in the quarterly
and year-to-date periods, respectively. Our recurring revenue, which includes
revenue from subscription arrangements for software and cloud-based solutions
and maintenance associated with perpetual licenses, represented 94%, 92%, 93%,
and 91% of revenue in the three months ended September 30, 2020 and 2019 and the
nine months ended September 30, 2020 and 2019, respectively. Our net loss in the
three months ended September 30, 2020 and 2019 and the nine months ended
September 30, 2020 and 2019 was $5.9 million, $17.6 million, $40.8 million and
$60.7 million, respectively, as we continue to invest in our business and market
opportunity.
COVID-19 Update
We continue to monitor the impact of the COVID-19 pandemic on our customers,
partners, employees and service providers. The full extent to which the COVID-19
pandemic will impact our business and operations will depend on future
developments that are highly uncertain. While in the near term we may experience
reductions in our billing and revenue growth rates, we are proactively managing
our expenditures, including reductions of non-critical and discretionary
expenses such as travel, meeting and facility usage costs, while preserving
strategic investments in sales capacity and research and development. This has
and may continue to result in improved leverage related to gross margins as well
as sales and marketing, research and development, and general and administrative
expenses as a percent of revenue. For additional information on the potential
effects of the COVID-19 pandemic on our business, financial condition and
results of operations, see the "Liquidity and Capital Resources" section below
and "Risk Factors" in Part II, Item 1A of this Form 10-Q.
Financial Highlights
Below are our key financial results:
                                              Three Months Ended September
                                                           30,                     Nine Months Ended September 30,
(in thousands, except per share data)            2020               2019               2020                2019
Revenue                                      $  112,282          $ 91,852          $  322,139          $ 257,537
Loss from operations                             (3,465)          (18,327)            (35,702)           (63,246)
Net loss                                         (5,858)          (17,640)            (40,795)           (60,708)
Net loss per share, basic and diluted             (0.06)            (0.18)              (0.41)             (0.64)
Net cash provided by (used in) operating
activities                                       24,807            (4,675)             46,298             (7,672)
Purchases of property and equipment              (8,069)           (4,927)            (19,073)           (10,262)


Factors Affecting Our Performance
Product Leadership
Our enterprise platform offerings provide visibility into the broadest range of
traditional and modern IT assets across cloud and on-premises environments. We
are intensely focused on continued innovation and ongoing development of our
enterprise platform offerings that empower organizations to understand and
reduce their cyber exposure. Additionally, we continue to expand the
capabilities of our Nessus products, specifically as they relate to the ability
to scan for and detect the rapidly expanding volume of vulnerabilities.
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We intend to continue to invest in our engineering capabilities and marketing
activities to maintain our position in the highly-competitive market for
cybersecurity solutions. Our results of operations may fluctuate as we make
these investments to drive increased customer adoption and usage.
New Enterprise Platform Customer Acquisition
We believe that our customer base provides a significant opportunity to expand
sales of our enterprise platform offerings and that our ability to continue to
grow the number of enterprise platform customers will increase future
opportunities for renewals and follow-on sales. We believe that we have
significant room to increase our market share.
We expect to grow our enterprise platform customers by continuing to expand our
sales organization and leveraging our channel partner network, which we believe
will allow us to identify new enterprise customers, enter new markets, including
internationally, as well as to convert more of our existing Nessus Professional
customers to enterprise platform customers.
We have increased our sales and marketing headcount in recent years and we will
continue to invest in our partner network and sales and marketing capability in
order to grow domestically and internationally.
Retaining and Expanding Revenue from Existing Customers
Our enterprise platform offerings utilize IT asset-based or IP address-based
pricing models. Once enterprise customers have licensed our platform offerings,
they typically seek broader coverage over their traditional IT assets, including
networking infrastructure, desktops and on-premises servers. As customers launch
new applications or migrate existing applications to the cloud and deploy web
applications, containers, IoT and OT, they often increase the scope of their
subscriptions and/or add additional perpetual licenses to our enterprise
platforms.
We are also focused on upselling customers from Nessus Professional to our
enterprise platform offerings. Nessus Professional customers are typically
organizations or independent security consultants that use Nessus Professional
for a single vulnerability assessment at a point in time. We seek to convert
these customers to our enterprise platform offerings, which provide continuous
visibility and insights into their attack surface, as their needs develop.
Further, we plan to expand existing platform capabilities and launch new
products, which we believe will drive new product purchases
and follow-on purchases over time, thereby contributing to customer renewals. We
believe that there is a significant opportunity to drive additional sales to
existing customers, and we expect to invest in sales and marketing and customer
success personnel and activities to achieve additional revenue growth from
existing customers. However, our ability to increase sales to existing customers
will depend on a number of factors, including satisfaction or dissatisfaction
with our products and services, competition, pricing, current economic
conditions or overall changes in our and our clients' spending levels.
We evaluate our ability to expand sales with our existing customers by assessing
our dollar-based net expansion rate. We calculate our dollar-based net expansion
rate as follows:
•Denominator: To calculate our dollar-based net expansion rate as of the end of
a reporting period, we first determine the annual recurring revenue, or ARR,
from all active subscriptions and maintenance from perpetual licenses as of the
last day of the same reporting period in the prior year. This represents
recurring payments that we expect to receive 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 year.
•Numerator: We measure the ARR for that same cohort of customers representing
all subscriptions and maintenance from perpetual licenses based on customer
orders as of the end of the reporting period.
We calculate dollar-based net expansion rate by dividing the numerator by the
denominator.
Our dollar-based net expansion rate for the three-months ended September 30,
2020 was approximately 110% and was impacted by a more moderate pace of IT asset
and IP address expansion in the current economic environment. Our
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dollar-based net expansion rate may experience further decline or fluctuate from
quarter to quarter if our existing customers choose to reduce or delay
technology spending in response to economic conditions resulting from the
COVID-19 pandemic, as well as a result of a number of factors, including our
existing customers' satisfaction with our solutions, the pricing of our
solutions and the ability of competing solutions and the pricing thereof.
Investing in Business Growth
Since our founding, we have invested significantly in growing our business. We
intend to continue to invest in sales and marketing to grow our sales team,
expand brand and Cyber Exposure awareness and optimize our channel partner
network. We also intend to continue to invest in our research and development
team to further our technological leadership position in Cyber Exposure and
enhance the functionality of our solutions. Any investments we make in our sales
and marketing and research and development teams will occur in advance of
experiencing the benefits from such investments, so it may be difficult for us
to determine if we are efficiently allocating resources in those areas. We may
also explore acquisitions of businesses, technology and/or development personnel
that will expand and enhance the functionality of our platform offerings. These
investment activities could increase our net losses over the short term if our
revenue growth does not increase at higher rates. However, we expect that these
investments will ultimately benefit our results of operations.
Key Operating and Financial Metrics
To supplement our consolidated financial statements, which are prepared and
presented in accordance with GAAP, we use certain operating metrics and non-GAAP
financial measures, as described below, to understand and evaluate our core
operating and financial performance. These non-GAAP financial measures, which
may be different than similarly titled measures used by other companies, are
presented to enhance investors' overall understanding of our financial
performance and should not be considered a substitute for, or superior to, the
financial information prepared and presented in accordance with GAAP.
We believe that these operating metrics and non-GAAP financial measures provide
useful information about our operating and financial performance, enhance the
overall understanding of our past performance and future prospects and allow
for greater transparency with respect to important metrics used by management
for financial and operational decision-making. We present these operating
metrics and non-GAAP financial measures to assist investors in seeing our
operating and financial performance using a management view and because we
believe that these measures provide an additional tool for investors to use in
comparing our core operating and financial performance over multiple periods
with other companies in our industry.
Calculated Current Billings
We use the non-GAAP measure of calculated current billings, which we believe is
a key metric to measure our periodic performance. Given that most of our
customers pay in advance, we typically recognize a majority of the related
revenue ratably over time. We use calculated current billings to measure and
monitor our ability to provide our business with the working capital generated
by upfront payments from our customers.
Calculated current billings consists of revenue recognized in a period plus the
change in current deferred revenue in the corresponding period. We believe that
calculated current billings, which excludes deferred revenue for periods beyond
twelve months in a customer's contractual term, more closely correlates with
annual contract value. Variability in total billings, depending on the timing of
large multi-year contracts and the preference for annual billing versus
multi-year upfront billing, may distort growth in one period over another.
While we believe that calculated current billings provides valuable insight into
the cash that will be generated from sales of our subscriptions, this metric may
vary from period-to-period for a number of reasons, and therefore has a number
of limitations as a quarter-to-quarter or year-over-year comparative measure.
Calculated current billings in any one period may be impacted by the overall
timing of sales, including early renewals, as well as the timing and amount of
multi-year prepaid contracts, which could favorably or unfavorably impact
year-over-year comparisons. For example, an increasing number of large sales
transactions, for which the timing has and will continue to vary, may occur in
quarters subsequent to or in advance of those that we anticipate. Our
calculation of calculated current billings may be different from
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other companies that report similar financial measures. Because of these and
other limitations, you should consider calculated current billings along with
revenue and our other GAAP financial results.
The adoption of Accounting Standards Codification Topic 606, Revenue From
Contracts With Customers at January 1, 2017 resulted in a $55.0 million increase
in deferred revenue primarily related to the deferral of perpetual license
revenue. This cumulative adjustment to deferred revenue at January 1, 2017
increased calculated current billings by $16.7 million, $11.8 million and $5.6
million in 2017, 2018 and 2019, respectively, and is expected to increase our
calculated current billings by $1.9 million in 2020.
The following table presents a reconciliation of revenue, the most directly
comparable financial measure calculated in accordance with GAAP, to calculated
current billings:
                                             Three Months Ended September 30,       Nine Months Ended September 30,
(in thousands)                                   2020                2019               2020                2019
Revenue                                      $  112,282          $  91,852          $  322,139          $ 257,537
Add: Deferred revenue (current), end of
period                                          296,360            245,985             296,360            245,985
Less: Deferred revenue (current), beginning
of period                                      (274,953)          (227,227)           (274,348)          (213,644)
Calculated current billings                  $  133,689          $ 110,610

$ 344,151 $ 289,878




Free Cash Flow
We use the non-GAAP measure of free cash flow, which we define as GAAP net cash
flows from operating activities reduced by purchases of property and equipment.
We believe free cash flow is an important liquidity measure of the cash (if any)
that is available, after purchases of property and equipment, for investment in
our business and to make acquisitions. We believe that free cash flow is useful
to investors as a liquidity measure because it measures our ability to generate
or use cash.
Our use of free cash flow has limitations as an analytical tool and you should
not consider it in isolation or as a substitute for an analysis of our results
under GAAP. First, free cash flow is not a substitute for net cash flows from
operating activities. Second, other companies may calculate free cash flow or
similarly titled non-GAAP financial measures differently or may use other
measures to evaluate their performance, all of which could reduce the usefulness
of free cash flow as a tool for comparison. Additionally, the utility of free
cash flow is further limited as it does not reflect our future contractual
commitments and does not represent the total increase or decrease in our cash
balance for a given period. Because of these and other limitations, you should
consider free cash flow along with net cash provided by (used in) operating
activities and our other GAAP financial measures.
The following table presents a reconciliation of net cash provided by (used in)
operating activities, the most directly comparable financial measure calculated
in accordance with GAAP, to free cash flow:
                                              Three Months Ended September
                                                          30,                     Nine Months Ended September 30,
(in thousands)                                   2020              2019               2020               2019
Net cash provided by (used in) operating
activities                                   $  24,807          $ (4,675)         $  46,298          $  (7,672)
Purchases of property and equipment             (8,069)           (4,927)           (19,073)           (10,262)
Free cash flow(1)                            $  16,738          $ (9,602)         $  27,225          $ (17,934)


_______________
(1)  Free cash flow included reductions related to employee stock purchase plan
activity of $2.3 million and $3.7 million in the three months ended September
30, 2020 and 2019, respectively, and $2.7 million and $4.7 million in the nine
months ended September 30, 2020 and 2019, respectively. The three and nine
months ended September 30, 2020 included $5.6 million and $14.2 million,
respectively, in proceeds from lease incentives as well as $6.8 million and
$16.6 million, respectively, in capital expenditures for our new headquarters.
The three and nine months ended September 30, 2019 included $2.4 million in
capital expenditures for our new headquarters. The nine months ended September
30, 2020 also included $0.7 million of acquisition-related payments for Indegy.
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Enterprise Platform Customers
We believe that our customer base provides a significant opportunity to expand
sales of our enterprise platform offerings. The following tables summarize key
components of our customer base:
                                                                           

Three Months Ended September 30,


                                                             2020                        2019                    Change (%)
Number of new enterprise platform customers added in
period(1)                                                     335                         387                       (13)%


_______________
(1)  We define an enterprise platform customer as a customer that has licensed
Tenable.io or Tenable.sc for an annual amount of $5,000 or greater. New
enterprise platform customers represent new customer logos during the periods
presented and do not include customer conversions from Nessus Professional to
enterprise platforms.
                                                                           At September 30,
                                                          2020                   2019              Change (%)
Number of customers with $100,000 and greater in
annual contract value at end of period                     771                   589                   31%


Non-GAAP Income (Loss) from Operations and Non-GAAP Operating Margin
We use non-GAAP income (loss) from operations along with non-GAAP operating
margin as key indicators of our financial performance. We define these non-GAAP
financial measures as their respective GAAP measures, excluding the effects of
stock-based compensation, acquisition-related expenses and amortization of
acquired intangible assets. Acquisition-related expenses include transaction
expenses and costs related to the transfer of acquired intellectual property.
We believe that these non-GAAP financial measures provide useful information
about our core operating results over multiple periods. There are a number of
limitations related to the use of the non-GAAP financial measures as compared to
GAAP loss from operations and operating margin, including that non-GAAP income
(loss) from operations and non-GAAP operating margin exclude stock-based
compensation expense, which has been, and will continue to be for the
foreseeable future, a significant recurring expense in our business and an
important part of our compensation strategy.
The following table presents a reconciliation of loss from operations, the most
directly comparable financial measure calculated in accordance with GAAP, to
non-GAAP income (loss) from operations, and operating margin, the most directly
comparable financial measure calculated in accordance with GAAP, to non-GAAP
operating margin:
                                                          Three Months Ended September 30,             Nine Months Ended September 30,
(dollars in thousands)                                         2020                  2019                  2020                   2019
Loss from operations                                    $       (3,465)          $ (18,327)         $       (35,702)          $ (63,246)
Stock-based compensation                                        15,300              10,499                   44,001              31,191
Acquisition-related expenses                                         -                   -                      339                   -
Amortization of acquired intangible assets                         579                 125                    1,736                 427
Non-GAAP income (loss) from operations                  $       12,414           $  (7,703)         $        10,374           $ (31,628)

Operating margin                                                    (3)  %             (20) %                   (11)  %             (25) %
Non-GAAP operating margin                                           11   %              (8) %                     3   %             (12) %

Non-GAAP Net Income (Loss) and Non-GAAP Earnings (Loss) Per Share We use non-GAAP net income (loss), which excludes the effect of stock-based compensation, acquisition-related expenses and amortization of acquired intangible assets, as well as the related tax impact, to calculate non-GAAP


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Table of Contents earnings (loss) per share. We believe that these non-GAAP measures provide important information to management and investors because they facilitate comparisons of our core operating results over multiple periods. The following table presents a reconciliation of net loss and net loss per share, the most comparable financial measures calculated in accordance with GAAP, to non-GAAP net income (loss) and non-GAAP earnings (loss) per share:


                                                  Three Months Ended 

September


                                                               30,                     Nine Months Ended September 30,
(in thousands, except for per share amounts)         2020               2019               2020                2019
Net loss                                         $  (5,858)         $ (17,640)         $  (40,795)         $ (60,708)
Stock-based compensation                            15,300             10,499              44,001             31,191
Tax impact of stock-based compensation(1)              497                273               1,132               (255)
Acquisition-related expenses                             -                  -                 339                  -
Amortization of acquired intangible assets(2)          579                125               1,736                427
Non-GAAP net income (loss)                       $  10,518          $  (6,743)         $    6,413          $ (29,345)

Net loss per share, diluted                      $   (0.06)         $   (0.18)         $    (0.41)         $   (0.64)
Stock-based compensation                              0.15               0.11                0.44               0.33
Tax impact of stock-based compensation(1)                -                  -                0.01                  -
Acquisition-related expenses                             -                  -                   -                  -
Amortization of acquired intangible assets(2)         0.01                  -                0.02                  -
Adjustment to diluted earnings per share(3)          (0.01)                 -                   -                  -

Non-GAAP earnings (loss) per share, diluted $ 0.09 $ (0.07) $ 0.06 $ (0.31)



Weighted-average shares used to compute GAAP net
loss per share, diluted                               101,736             96,709             100,272             95,433

Weighted-average shares used to compute non-GAAP
earnings (loss) per share, diluted(4)                 111,224             96,709             109,046             95,433


________________


(1)  The tax impact of stock-based compensation is based on the tax treatment
for the applicable tax jurisdictions.
(2)  The tax impact of amortization of acquired intangible assets is not
material.
(3)  An adjustment may be necessary to reconcile GAAP net loss per share, which
excludes potentially dilutive shares, to non-GAAP earnings per share, which
includes potentially dilutive shares.
(4)  In periods in which there is a non-GAAP net loss, basic and diluted
weighted average shares outstanding are the same, as potentially dilutive shares
would be antidilutive.
Components of Our Results of Operations
Revenue
We generate revenue from subscription arrangements for our software and
cloud-based solutions, perpetual licenses, maintenance associated with perpetual
licenses and professional services.
Our subscription arrangements generally have annual or multi-year contractual
terms to use our software or cloud-based solutions, including ongoing software
updates during the contractual period. Revenue is recognized ratably over the
subscription term given the critical utility provided by the ongoing updates
that are released throughout the contract period.
Our perpetual licenses are generally sold with one or more years of maintenance,
which includes ongoing software updates. Given the critical utility provided by
the ongoing software updates and updated ability to identify network
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vulnerabilities included in maintenance, we combine the perpetual license and
the maintenance into a single performance obligation. Perpetual license
arrangements generally contain a material right related to the customer's
ability to renew maintenance at a price that is less than the initial license
fee. We apply a practical alternative to allocating a portion of the transaction
price to the material right performance obligation and estimate a hypothetical
transaction price which includes fees for expected maintenance renewals based on
the estimated economic life of perpetual license contracts. We allocate the
transaction price between the cybersecurity subscription provided in the initial
contract and the material right related to expected contract renewals based on
the hypothetical transaction price. We recognize the amount allocated to the
combined license and maintenance performance obligation over the initial
contractual period, which is generally one year. We recognize the amount
allocated to the material right over the expected maintenance renewal period,
which begins at the end of the initial contractual term and is generally four
years. We have estimated the five-year economic life of perpetual license
contracts based on historical contract attrition, expected renewal periods, the
lifecycle of our technology and other factors. This estimate may change over
time.
Professional services and other revenue is primarily comprised of advisory
services and training related to the deployment and optimization of our
products. These services do not result in significant customization of our
products. Professional services and other revenue is recognized as the services
are performed.
We have historically experienced, and expect in the future to experience,
seasonality in entering into agreements with customers. We typically enter into
a significantly higher percentage of agreements with new customers, as well as
renewal agreements with existing customers, in the third and fourth quarters of
the year. The increase in customer agreements in the third quarter is primarily
attributable to U.S. government and related agencies, and the increase in the
fourth quarter is primarily attributable to large enterprise account buying
patterns typical in the software industry. The ratable nature of our
subscription revenue makes this seasonality less apparent in our overall
financial results.
Cost of Revenue, Gross Profit and Gross Margin
Cost of revenue includes personnel costs related to our technical support group
that provides assistance to customers, including salaries, benefits, bonuses,
payroll taxes, stock-based compensation and any severance. Cost of revenue also
includes cloud infrastructure costs, the costs related to professional services
and training, depreciation, amortization of acquired and developed technology
and allocated overhead costs, which consist of information technology and
facilities.
We intend to continue to invest additional resources in our cloud-based platform
and customer support team 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, 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 costs associated
with operating our cloud-based platform, the extent to which we expand our
customer support team and the extent to which we can increase the efficiency of
our technology and infrastructure through technological improvements.
We expect our gross profit to increase in absolute dollars but our gross margin
to decrease, as we expect revenue from our cloud-based subscriptions to increase
as a percentage of revenue, although our gross margin could fluctuate from
period to period depending on the interplay of all of these 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,
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bonuses, payroll taxes, stock-based compensation and any severance. Operating
expenses also include depreciation and amortization as well as allocated
overhead costs, including IT and facilities costs.
Sales and Marketing
Sales and marketing expense consists of personnel costs, sales commissions,
marketing programs, travel and entertainment, expenses for conferences and
events and allocated overhead costs. We capitalize sales commissions, including
related incremental fringe benefit costs, and recognize the expense over an
estimated period of benefit, which ranges between three and four years for
subscription arrangements and five years for perpetual license arrangements.
Sales commissions on contract renewals are capitalized and amortized ratably
over the contract term, with the exception of contracts with renewal periods
that are one year or less, in which case the incremental costs are expensed as
incurred. Sales commissions on professional services arrangements are expensed
as incurred as the contractual periods of these arrangements are generally less
than one year.
We intend to continue to make investments in our sales and marketing teams to
grow revenue, further penetrate the market and expand our global customer base.
We expect our sales and marketing expense to increase in absolute dollars
annually and to be our largest operating expense category for the foreseeable
future. However, as our revenue increases, we expect our sales and marketing
expense to decrease as a percentage of our revenue over the long term. Our sales
and marketing expense may fluctuate from period to period due to the timing and
extent of these expenses, including sales commissions, which may fluctuate
depending on the mix of sales and related expense recognition.
Research and Development
Research and development expense consists of personnel costs, software used to
develop our products, travel and entertainment, consulting and professional fees
for third-party development resources as well as allocated overhead. Our
research and development expense supports our efforts to continue to add
capabilities to our existing products and enable the continued detection of new
network vulnerabilities.
We expect our research and development expense to continue to increase annually
in absolute dollars for the foreseeable future as we continue to invest in
research and development efforts to enhance the functionality of our cloud-based
platform. However, we expect our research and development expense to decrease as
a percentage of our revenue over the long term, although our research and
development expense may fluctuate from period to period due to the timing and
extent of these expenses.
General and Administrative
General and administrative expense consists of personnel costs for our
executive, finance, legal, human resources and administrative departments.
Additional expenses include travel and entertainment, professional fees,
insurance, allocated overhead and acquisition-related costs.
We expect our general and administrative expense to continue to increase
annually in absolute dollars for the foreseeable future due to additional costs
associated with accounting, compliance, insurance and investor relations as a
public company. However, we expect our general and administrative expense to
decrease as a percentage of our revenue over the long term, although our general
and administrative expense may fluctuate from period to period due to the timing
and extent of these expenses.
Interest (Expense) Income, Net
Interest (expense) income, net consists primarily of interest income earned on
cash and cash equivalents and short-term investments and interest expense in
connection with our credit facility, including unused and letter of credit fees.
Other Expense, Net
Other expense, net consists primarily of foreign currency remeasurement and
transaction gains and losses.
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Provision for Income Taxes
Provision for income taxes consists of income taxes in certain foreign
jurisdictions in which we conduct business and the related withholding taxes on
sales with customers. We have recorded deferred tax assets for which a full
valuation allowance has been provided, including 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.
Results of Operations
The following tables set forth our consolidated results of operations:
                                                  Three Months Ended September 30,       Nine Months Ended September 30,
(in thousands)                                        2020                2019               2020                2019
Revenue                                           $  112,282          $  91,852          $  322,139          $ 257,537
Cost of revenue(1)                                    19,394             15,245              57,237             42,389
Gross profit                                          92,888             76,607             264,902            215,148
Operating expenses:
Sales and marketing(1)                                53,045             56,699             168,343            165,403
Research and development(1)                           25,128             20,763              77,269             64,396
General and administrative(1)                         18,180             17,472              54,992             48,595
Total operating expenses                              96,353             94,934             300,604            278,394
Loss from operations                                  (3,465)           (18,327)            (35,702)           (63,246)
Interest (expense) income, net                           (12)             1,527               1,177              4,677
Other expense, net                                      (561)              (240)             (1,819)              (576)
Loss before income taxes                              (4,038)           (17,040)            (36,344)           (59,145)
Provision for income taxes                             1,820                600               4,451              1,563
Net loss                                          $   (5,858)         $ (17,640)         $  (40,795)         $ (60,708)


_______________

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


                                                 Three Months Ended September 30,             Nine Months Ended September 30,
(in thousands)                                     2020                   2019                  2020                   2019
Cost of revenue                               $           826       $            694       $         2,403       $          2,088
Sales and marketing                                     4,806                  3,521                14,677                 11,102
Research and development                                3,953                  2,124                10,794                  6,595
General and administrative                              5,715                  4,160                16,127                 11,406

Total stock-based compensation expense $ 15,300 $

10,499 $ 44,001 $ 31,191




Comparison of the Three Months Ended September 30, 2020 and 2019
Revenue
                                   Three Months Ended September 30,                    Change
(dollars in thousands)                    2020                       2019          ($)         (%)
Revenue                    $          112,282                     $ 91,852      $ 20,430       22  %


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The increase in revenue of $20.4 million was comprised of increases in
subscription revenue of $21.3 million and professional services and other
revenue of $0.5 million, net of a decrease in perpetual license and maintenance
revenue of $1.4 million. Revenue from existing customers comprised 25% of the
increase, while the remaining increase was due to revenue from new customers
since October 1, 2019. International revenue increased $10.1 million, or 29%.
Cost of Revenue, Gross Profit and Gross Margin
                                   Three Months Ended September 30,                  Change
(dollars in thousands)            2020                             2019           ($)        (%)
Cost of revenue            $        19,394                      $ 15,245       $ 4,149       27  %
Gross profit                        92,888                        76,607        16,281       21  %
Gross margin                            83   %                        83  %


The increase in cost of revenue of $4.1 million was primarily due to:
•a $1.9 million increase in personnel costs primarily due to support for
cloud-based products;
•a $1.7 million increase in third-party cloud infrastructure costs largely
associated with the increased adoption of Tenable.io and Tenable Lumin;
•a $0.5 million increase in the amortization of acquired intangible assets; and
•a $0.3 million increase in the amortization of internal use software; partially
offset by
•a $0.3 million decrease in travel and meeting costs.
Operating Expenses
Sales and Marketing
                                   Three Months Ended September 30,                   Change
(dollars in thousands)                    2020                      2019          ($)         (%)
Sales and marketing        $         53,045                      $ 56,699      $ (3,654)      (6) %


The decrease in sales and marketing expense of $3.7 million was primarily due
to:
•a $2.4 million decrease in selling expenses, including a $2.3 million decrease
in travel and meeting costs;
•a $2.1 million decrease in marketing expenses, primarily related to a reduction
in field marketing activities; and
•a $1.0 million decrease in sales commission draws; partially offset by
•a $1.6 million increase in personnel costs largely associated with an increase
in headcount, including a $1.3 million increase in stock-based compensation.
Research and Development
                                   Three Months Ended September 30,         

Change


(dollars in thousands)                    2020                      2019          ($)        (%)
Research and development   $         25,128                      $ 20,763

$ 4,365 21 %




The increase in research and development expense of $4.4 million was primarily
due to:
•a $4.9 million increase in personnel costs, including a $1.8 million increase
in stock-based compensation and a $0.7 million decrease in development costs
that were capitalized for internal use software; and
•a $0.5 million increase in allocated overhead costs, driven by both the
increase in headcount and the overall increase in such costs on a year-over-year
basis; partially offset by
•a $0.8 million decrease in travel and meeting costs; and
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•a $0.4 million decrease in third-party cloud infrastructure costs related to
the development of new and future product offerings.
General and Administrative
                                     Three Months Ended September 30,       

Change


(dollars in thousands)                      2020                      2019         ($)       (%)
General and administrative   $         18,180                      $ 17,472

$ 708 4 %




The increase in general and administrative expense of $0.7 million was primarily
due to:
•a $2.2 million increase in personnel costs largely associated with an increase
in headcount, including a $1.4 million increase in stock-based compensation; and
•a $0.1 million increase in allocated overhead costs; partially offset by
•a $1.4 million decrease in professional fees; and
•a $0.4 million decrease in travel and meeting costs.
Comparison of the Nine Months Ended September 30, 2020 and 2019
Revenue
                                  Nine Months Ended September 30,                   Change
(dollars in thousands)                  2020                     2019           ($)         (%)
Revenue                    $        322,139                   $ 257,537      $ 64,602       25  %


The increase in revenue of $64.6 million was comprised of increases in
subscription revenue of $65.6 million and professional services and other
revenue of $1.8 million, partially offset by a decrease in perpetual license and
maintenance revenue of $2.8 million. Revenue from existing customers comprised
49% of the increase, while the remaining increase was due to revenue from new
customers since October 1, 2019. International revenue increased $31.3 million,
or 33%.
Cost of Revenue, Gross Profit and Gross Margin
                                   Nine Months Ended September 30,                   Change
(dollars in thousands)            2020                            2019           ($)         (%)
Cost of revenue            $        57,237                     $ 42,389       $ 14,848       35  %
Gross profit                       264,902                      215,148         49,754       23  %
Gross margin                            82   %                       84  %


The increase in cost of revenue of $14.8 million was primarily due to:
•a $6.1 million increase in third-party cloud infrastructure costs largely
associated with the increased adoption of Tenable.io, as well as the launch of
Tenable Lumin;
•a $6.0 million increase in personnel costs primarily due to support for
cloud-based products;
•a $1.3 million increase in the amortization of acquired intangible assets;
•a $1.1 million increase in the amortization of internal use software; and
•a $0.6 million increase in allocated overhead costs driven by both the increase
in headcount and the overall increase in such costs on a year-over-year basis;
partially offset by
•a $0.8 million decrease in travel and meeting costs.
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Operating Expenses
Sales and Marketing
                                  Nine Months Ended September 30,                  Change
(dollars in thousands)                  2020                     2019           ($)        (%)
Sales and marketing        $        168,343                   $ 165,403      $ 2,940       2  %


The increase in sales and marketing expense of $2.9 million was primarily due
to:
•a $10.4 million increase in personnel costs largely associated with an increase
in headcount, including a $3.6 million increase in stock-based compensation;
•a $1.1 million increase in sales commissions, due to increased sales and the
amortization of deferred commissions; and
•a $1.6 million increase in allocated overhead costs, primarily facilities
costs, driven by both the increase in headcount and the overall increase in such
costs on a year-over-year basis; partially offset by
•a $5.5 million decrease in expenses for marketing expenses, primarily related
to a reduction in field marketing activities; and
•a $5.3 million decrease in selling expenses, including a $4.8 million decrease
in travel and meeting costs.
Research and Development
                                   Nine Months Ended September 30,                   Change
(dollars in thousands)                   2020                      2019          ($)         (%)
Research and development   $         77,269                     $ 64,396      $ 12,873       20  %


The increase in research and development expense of $12.9 million was primarily
due to:
•a $12.4 million increase in personnel costs largely associated with an increase
in headcount, including a $4.1 million increase in stock-based compensation and
a $2.7 million decrease in development costs that were capitalized for internal
use software; and
•a $1.8 million increase in allocated overhead costs, primarily facilities
costs, driven by both the increase in headcount and the overall increase in such
costs on a year-over-year basis; partially offset by
•a $1.1 million decrease in third-party cloud infrastructure costs related to
the development of new and future product offerings; and
•a $0.8 million decrease in travel and meeting costs.
General and Administrative
                                     Nine Months Ended September 30,        

Change


(dollars in thousands)                     2020                      2019          ($)        (%)
General and administrative   $         54,992                     $ 48,595

$ 6,397 13 %




The increase in general and administrative expense of $6.4 million was primarily
due to:
•a $7.0 million increase in personnel costs partially due to an increase in
headcount, including a $4.5 million increase in stock-based compensation; and
•a $1.1 million increase in allocated overhead costs, primarily facilities
costs, driven by both the increase in headcount and the overall increase in such
costs on a year-over-year basis; partially offset by
•a $1.4 million decrease in professional fees; and
•a $1.1 million decrease in travel and meeting costs.
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Liquidity and Capital Resources
At September 30, 2020, we had cash and cash equivalents, which consisted of bank
deposits and money market funds, of $141.4 million and short-term investments,
which consisted of commercial paper, U.S. Treasury and agency obligations and
corporate bonds, of $127.7 million.
Since our inception and prior to our IPO, we financed our operations through
cash provided by operations, including payments received from customers using
our software products and services, and we did not raise any primary
institutional capital. The proceeds of our Series A and Series B redeemable
convertible preferred stock financings were used to repurchase shares of capital
stock from former stockholders. We have generated significant operating losses
from our operations as reflected by our accumulated deficit of $605.9 million at
September 30, 2020.
We typically invoice our customers annually in advance and, to a lesser extent,
multi-year in advance. Therefore, a substantial source of our cash is from such
prepayments, which are included on our consolidated balance sheets as deferred
revenue. Deferred revenue consists primarily of the unearned portion of billed
fees for our subscriptions and perpetual licenses, which is subsequently
recognized as revenue in accordance with our revenue recognition policy. At
September 30, 2020, we had deferred revenue of $390.2 million, of which $296.4
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
are met.
Our principal uses of cash in recent periods have been funding our operations,
expansion of our sales and marketing and research and development activities,
investments in infrastructure, including the build-out of our new headquarters,
and acquiring complementary businesses and technology. We expect to continue
incurring operating losses in the near term. Even though we generated positive
cash flows from operations and free cash flow in the nine months ended September
30, 2020, we may not be able to sustain these cash flows in the near term. We
believe that our existing cash and cash equivalents and short-term investments
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 revenue growth rate, subscription renewal activity, the timing and
extent of spending to support further infrastructure and research and
development efforts, the timing and extent of additional capital expenditures to
invest in new and existing office spaces, the expansion of sales and marketing
and international operating activities, the timing of our introduction of new
product capabilities and enhancements of our platform and the continuing market
acceptance of our platform. In the fourth quarter of 2020, we expect capital
expenditures related to our new corporate headquarters to be approximately $2
million.
The full extent to which the COVID-19 pandemic will impact our business and
operations will depend on future developments that are highly uncertain and
cannot be predicted with confidence, such as the ultimate geographic spread of
the disease, the duration of the outbreak, the duration and effect of business
disruptions and the short-term effects and ultimate effectiveness of the travel
restrictions, quarantines, social distancing requirements and business closures
in the United States and other countries to contain and treat the disease. We
also do not yet know the full effects of COVID-19 pandemic may have on our
partners, customers and service providers. Accordingly, the current results and
financial conditions discussed herein may not be indicative of our future
operating results and trends. See the section titled "Risk Factors" in Part II,
Item 1A of this Form 10-Q.
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 equity or debt financing. In the
event that 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.
Credit Facility
In July 2020, we entered into a new $45.0 million senior secured facility, or
the 2020 Credit Facility, with Silicon Valley Bank in connection with the
expiration of our $25.0 million revolving credit facility, or the 2017 Credit
Facility. The 2020 Credit Facility bears interest at either LIBOR plus 2%, with
a 1% LIBOR floor, or the base rate plus 1%, and terminates on July 24, 2022. A
commitment fee of 0.35% per annum is payable quarterly in arrears based on the
unused portion. The
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2020 Credit Facility includes a $45.0 million uncommitted expansion, including a
$10.0 million sublimit for the issuance of letters of credit and a swingline
subfacility of up to $10.0 million, and has a financial covenant requiring a
minimum consolidated quick ratio of at least 1.5:1.0 on the last day of any
quarter.
In the nine months ended September 30, 2020, there were no amounts outstanding
under our 2020 Credit Facility or, prior to its expiration, the 2017 Credit
Facility. At September 30, 2020, we were in compliance with the financial
covenant and our borrowing capacity was reduced by $5.5 million related to
standby letters of credit. We do not currently intend to draw on the 2020 Credit
Facility.
Cash Flows
The following table summarizes our cash flows for the periods presented:
                                                                    Nine Months Ended September 30,
(in thousands)                                                         2020                   2019
Net cash provided by (used in) operating activities             $         46,298          $   (7,672)
Net cash used in investing activities                                     (8,455)            (15,480)
Net cash provided by financing activities                                 30,478              30,565

Effect of exchange rate changes on cash and cash equivalents and restricted cash

                                                       (1,359)             (1,226)

Net increase in cash and cash equivalents and restricted cash $ 66,962 $ 6,187




Operating Activities
In the nine months ended September 30, 2020, net cash provided by operating
activities was $46.3 million, which primarily consisted of our $40.8 million
loss, adjusted for stock-based compensation expense of $44.0 million and
depreciation and amortization of $8.0 million, as well as a net cash inflow of
$34.1 million from changes in operating assets and liabilities. The net inflow
from changes in operating assets and liabilities was primarily due to a $27.1
million increase in deferred revenue from increased subscription sales, as a
majority of our customers are invoiced in advance, as well as $14.2 million in
proceeds from lease incentives, and a $7.8 million decrease in accounts
receivable due to collections from customers. This inflow was partially offset
by a $8.4 million decrease in accrued compensation and a $4.1 million increase
in prepaid expenses.
In the nine months ended September 30, 2019, net cash used in operating
activities was $7.7 million, which primarily consisted of our $60.7 million
loss, adjusted for stock-based compensation expense of $31.2 million and
depreciation and amortization of $4.6 million, as well as a net cash inflow of
$18.0 million from changes in operating assets and liabilities. The net inflow
from changes in operating assets and liabilities was primarily due to a $39.5
million increase in deferred revenue from increased subscription sales, as a
majority of our customers are invoiced in advance. This inflow was partially
offset by a $13.3 million increase in accounts receivable, a $5.4 million
decrease in accrued compensation, including $4.7 million related to employee
stock purchase plan activity, and a $5.1 million increase in deferred
commissions.
Investing Activities
Net cash used in investing activities decreased by $7.0 million, primarily due
to a $15.8 million increase in sales and maturities, net of purchases, of
short-term investments in commercial paper, U.S. Treasury and agency obligations
and corporate bonds, partially offset by a $8.8 million increase in purchases of
property and equipment.
Financing Activities
Net cash provided by financing activities decreased by $0.1 million, primarily
due to a $2.1 million decrease in proceeds from stock issued in connection with
the employee stock purchase plan, which was partially offset by the $2.0 million
of loan proceeds that we received from the state of Maryland in 2020.
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Contractual Obligations
At September 30, 2020, there were no material changes in our contractual
obligations and commitments from those disclosed in our 10-K.
Off-Balance Sheet Arrangements
At September 30, 2020, 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.
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.
There have been no material changes to our critical accounting policies and
estimates as described in our 10-K.
Recently Issued Accounting Pronouncements
Refer to Note 1 to our consolidated financial statements for more information
regarding recently issued accounting pronouncements.
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