tenb-20220201
0001660280false00016602802022-02-012022-02-01


UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
__________________
FORM 8-K
__________________

CURRENT REPORT
Pursuant to Section 13 or 15(d) of The Securities Exchange Act of 1934
 
Date of report (Date of earliest event reported): February 1, 2022

__________________
TENABLE HOLDINGS, INC.
(Exact name of registrant as specified in its charter)
__________________
Delaware001-3860047-5580846
(State or other jurisdiction of incorporation or organization)(Commission File Number)(I.R.S. Employer Identification Number)

6100 Merriweather Drive, Columbia, Maryland, 21044
(Address of principal executive offices, including zip code)

(410) 872-0555
(Registrant’s telephone number, including area code)
__________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading Symbol(s)Name of each exchange on which registered
Common Stock, par value $0.01 per shareTENBThe Nasdaq Stock Market LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).
 
Emerging growth company 
 
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. 




Item 2.02    Results of Operations and Financial Condition.
On February 1, 2022, Tenable Holdings, Inc. (the "Company") reported financial results for the quarter and full year ended December 31, 2021. A copy of the press release is furnished as Exhibit 99.1 to this report and incorporated by reference.
The information in this Item 2.02 of this Current Report on 8-K (including Exhibit 99.1) is furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or subject to the liabilities of that section or Sections 11 and 12(a)(2) of the Securities Act of 1933, as amended. The information shall not be deemed incorporated by reference into any other filing with the Securities and Exchange Commission made by the Company, whether made before or after today’s date, regardless of any general incorporation language in such filing, except as shall be expressly set forth by specific references in such filing.
Item 9.01    Financial Statements and Exhibits.
(d)     Exhibits
Exhibit NumberDescription
99.1
101.SCHInline XBRL Taxonomy Extension Schema Document.
101.LABInline XBRL Taxonomy Extension Label Linkbase Document.
101.PREInline XBRL Taxonomy Extension Presentation Linkbase Document.
104
The cover page from Tenable's 8-K filed on February 1, 2022, formatted in Inline XBRL.



SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
TENABLE HOLDINGS, INC.
Date:February 1, 2022By:/s/ Stephen A. Riddick
Stephen A. Riddick
General Counsel and Corporate Secretary

Document

Tenable Announces Fourth Quarter and Full Year 2021 Financial Results
Added 562 new enterprise platform customers and 100 net new six-figure enterprise platform customers in the fourth quarter.
Fourth quarter revenue of $149.0 million, up 26% year-over-year; Full year revenue of $541.1 million, up 23% year-over-year.
Fourth quarter calculated current billings of $194.0 million, up 29% year-over year; Full year calculated current billings of $617.2 million, up 25% year-over-year.
Full year net cash provided by operating activities of $96.8 million; Unlevered free cash flow of $95.2 million.
COLUMBIA, Maryland, February 1, 2022 — Tenable Holdings, Inc. (“Tenable”) (Nasdaq: TENB), the Cyber Exposure company, today announced financial results for the quarter and year ended December 31, 2021.
"Q4 capped a tremendous year for Tenable, and included accelerated year-over-year CCB growth of 29%,” said Amit Yoran, chairman and chief executive officer of Tenable. “In 2021, we dramatically expanded the types of connected assets that we assess to enable our customers to more fully measure and manage cyber risk, leveraging our unified platform, in the midst of escalating threats and cloud transformation."
Fourth Quarter 2021 Financial Highlights
Revenue was $149.0 million, a 26% increase year-over-year.
Calculated current billings was $194.0 million, a 29% increase year-over-year.
GAAP loss from operations was $12.9 million, compared to a loss of $0.7 million in the fourth quarter of 2020.
Non-GAAP income from operations was $11.9 million, compared to $15.4 million in the fourth quarter of 2020.
GAAP net loss was $11.0 million, compared to a loss of $1.9 million in the fourth quarter of 2020.
GAAP net loss per share was $0.10, compared to a loss per share of $0.02 in the fourth quarter of 2020.
Non-GAAP net income was $5.9 million, compared to $14.4 million in the fourth quarter of 2020.
Non-GAAP diluted earnings per share was $0.05, compared to $0.13 in the fourth quarter of 2020.
Net cash provided by operating activities was $22.0 million, compared to $17.9 million in the fourth quarter of 2020.
Unlevered free cash flow was $22.4 million, compared to $16.8 million in the fourth quarter of 2020.
Full Year 2021 Financial Highlights
Revenue was $541.1 million, a 23% increase year-over-year.
Calculated current billings was $617.2 million, a 25% increase year-over-year.
GAAP loss from operations was $41.8 million, compared to a loss of $36.4 million in 2020.
Non-GAAP income from operations was $51.0 million, compared to $25.8 million in 2020.
GAAP net loss was $46.7 million, compared to a loss of $42.7 million in 2020.
GAAP net loss per share was $0.44, compared to a loss per share of $0.42 in 2020.
Non-GAAP net income was $38.9 million, compared to $20.8 million in 2020.
Non-GAAP diluted earnings per share was $0.34, compared to $0.19 in 2020.
Cash and cash equivalents and short-term investments were $512.3 million at December 31, 2021, which included $365.7 million of net proceeds from our credit facility, compared to $291.8 million at December 31, 2020.
Net cash provided by operating activities was $96.8 million, compared to $64.2 million in 2020.
Unlevered free cash flow was $95.2 million, compared to $44.3 million in 2020.
Fourth Quarter 2021 and Recent Business Highlights
Added 562 new enterprise platform customers and 100 net new six-figure customers.
1


Agreed to acquire Cymptom, a platform that proactively measures, maps and prioritizes all probable attack paths, enabling security teams to preemptively focus response ahead of and during breaches. The acquisition is expected to close in the first quarter of 2022.
Launched Tenable.cs to help organizations protect the full cloud-native stack and are expanding that to include Container Security, Frictionless and Nessus Assessment for cloud workloads, Infrastructure as Code, Kubernetes Security, and Cloud Security Posture Management.
Added Tenable.ot™ to the Continuous Diagnostics and Mitigation (CDM) Program Approved Product List, allowing federal agencies and departments to purchase Tenable.ot through the CDM Program.
Named a Leader in Forrester’s report, “The Forrester Wave™: Industrial Control Systems (ICS) Security Solutions, Q4, 2021.” As one of only three leaders, Tenable received the highest possible scores (5.0) in seven criteria, including ICS Protocol Support, Vulnerability Risk Management for Operational Technology, Execution Roadmap, Innovation Roadmap, Planned Enhancements, Commercial Model and Product Security.
Financial Outlook
For the first quarter of 2022, we currently expect:
Revenue in the range of $152.0 million to $154.0 million.
Non-GAAP income from operations in the range of $10.0 million to $11.0 million.
Non-GAAP net income in the range of $5.2 million to $6.2 million, assuming interest expense of $3.5 million and a provision for income taxes of $1.3 million.
Non-GAAP diluted earnings per share in the range of $0.04 to $0.05.
117.5 million diluted weighted average shares outstanding.
For the year ending December 31, 2022, we currently expect:
Calculated current billings in the range of $750.0 million to $760.0 million.
Revenue in the range of $662.0 million to $670.0 million.
Non-GAAP income from operations in the range of $40.0 million to $45.0 million.
Non-GAAP net income in the range of $18.2 million to $23.2 million, assuming interest expense of $14.0 million and a provision for income taxes of $8.0 million.
Non-GAAP diluted earnings per share in the range of $0.15 to $0.19.
119.5 million diluted weighted average shares outstanding.
Conference Call Information
Tenable will host a conference call today, February 1, 2022, at 4:30 p.m. Eastern Time to discuss its financial results. The conference call can be accessed at 877-407-9716 (U.S.) and 201-493-6779 (international). A live webcast of the event will be available on the Tenable Investor Relations website at https://investors.tenable.com. An archived replay of the live broadcast will be available on the Investor Relations page of the website following the call.
About Tenable
Tenable® is the Cyber Exposure company. Approximately 40,000 organizations around the globe rely on Tenable to understand and reduce cyber risk. As the creator of Nessus®, Tenable extended its expertise in vulnerabilities to deliver the world’s first platform to see and secure any digital asset on any computing platform. Tenable customers include approximately 60 percent of the Fortune 500, approximately 40 percent of the Global 2000, and large government agencies. Learn more at tenable.com.
Contact Information
Investor Relations
investors@tenable.com
2


Media Relations
tenablepr@tenable.com
Forward-Looking Statements
This press release includes forward-looking statements within the meaning of the "safe harbor" provisions of the Private Securities Litigation Reform Act of 1995. All statements contained in this press release other than statements of historical fact, including statements regarding our future results of operations and financial position, business strategy and plans and objectives for future operations, are forward-looking statements and represent our views as of the date of this press release. The words “anticipate,” "believe,” “continue,” “estimate,” “expect,” “intend,” “may,” “will” and similar expressions are intended to identify forward-looking statements. We have based these forward-looking statements on our current expectations and projections about future events and financial trends that we believe may affect our financial condition, results of operations, business strategy, short-term and long-term business operations and objectives and financial needs. These forward-looking statements are subject to a number of assumptions and risks and uncertainties, many of which involve factors or circumstances that are beyond our control that could affect our financial results. These risks and uncertainties are detailed in the sections titled "Risk Factors" 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, 2020, our Quarterly Report on Form 10-Q for the quarter ended September 30, 2021 and other filings that we make from time to time with the SEC, which are available on the SEC's website at sec.gov. Such risks and uncertainties may be amplified by the COVID-19 pandemic and its potential impact on our business and the global economy. Moreover, we operate in a very competitive and rapidly changing environment. New risks emerge from time to time. It is not possible for our management to predict all risks, nor can we assess the impact of all factors on our business or the extent to which any factor, or combination of factors, may cause actual results to differ materially from those contained in any forward-looking statements we may make. In light of these risks, uncertainties and assumptions, the future events and trends discussed in this press release may not occur and actual results could differ materially and adversely from those anticipated or implied in any forward-looking statements. Except as required by law, we are under no obligation to update these forward-looking statements subsequent to the date of this press release, or to update the reasons if actual results differ materially from those anticipated in the forward-looking statements.
Non-GAAP Financial Measures and Other Key Metrics
To supplement our consolidated financial statements, which are prepared and presented in accordance with GAAP, we use certain non-GAAP financial measures, as described below, to understand and evaluate our core operating performance. These non-GAAP financial measures, which may be different than similarly titled measures used by other companies, are presented to enhance the 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 non-GAAP financial measures provide useful information about our 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 include these non-GAAP financial measures to present our financial performance using a management view and because we believe that these measures provide an additional comparison of our core financial performance over multiple periods with other companies in our industry.
Reconciliations of non-GAAP financial measures to the most directly comparable GAAP financial measures are included in the financial tables accompanying this press release.
Calculated Current Billings: We define calculated current billings, a non-GAAP financial measure, as total revenue recognized in a period plus the change in current deferred revenue in the corresponding period. We believe that calculated current billings is a key metric to measure our periodic performance. Given that most of our customers pay in advance (including multi-year contracts), but we generally recognize 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. 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 and that the 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.
3


Free Cash Flow and Unlevered Free Cash Flow: We define free cash flow, a non-GAAP financial measure, as net cash provided by operating activities less 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 as a liquidity measure because it measures our ability to generate or use cash. We define unlevered free cash flow as free cash flow plus cash paid for interest and other financing costs. We believe unlevered free cash flow is useful as a liquidity measure as it measures the cash that is available to invest in our business and meet our current and future financing needs.
Non-GAAP Income from Operations and Non-GAAP Operating Margin: We define these non-GAAP financial measures as their respective GAAP measures, excluding the effect of stock-based compensation, acquisition-related expenses and amortization of acquired intangible assets. Acquisition-related expenses include transaction expenses and costs related to the intercompany transfer of acquired intellectual property.
Non-GAAP Net Income and Non-GAAP Earnings Per Share: We define non-GAAP net income as GAAP net loss, excluding the effect of stock-based compensation, acquisition-related expenses and amortization of acquired intangible assets, including the applicable tax impacts. In addition, we exclude the tax impact of intra-entity asset transfers resulting from the internal restructuring of legal entities as well as deferred income tax benefits recognized in connection with acquisitions. We use non-GAAP net income to calculate non-GAAP earnings per share.
Non-GAAP Gross Profit and Non-GAAP Gross Margin: We define non-GAAP gross profit as GAAP gross profit, excluding the effect of stock-based compensation and amortization of acquired intangible assets. Non-GAAP gross margin is defined as non-GAAP gross profit as a percentage of revenue.
Non-GAAP Sales and Marketing Expense, Non-GAAP Research and Development Expense and Non-GAAP General and Administrative Expense: We define these non-GAAP measures as their respective GAAP measures, excluding stock-based compensation and acquisition-related expenses.


4


TENABLE HOLDINGS, INC.
CONSOLIDATED STATEMENTS OF OPERATIONS
(unaudited)
Three Months Ended
December 31,
Year Ended
 December 31,
(in thousands, except per share data)2021202020212020
Revenue$149,018 $118,082 $541,130 $440,221 
Cost of revenue(1)
30,836 20,317 106,396 77,554 
Gross profit118,182 97,765 434,734 362,667 
Operating expenses:
Sales and marketing(1)
77,485 55,934 270,158 224,277 
Research and development(1)
30,718 24,418 116,432 101,687 
General and administrative(1)
22,846 18,144 89,912 73,136 
Total operating expenses131,049 98,496 476,502 399,100 
Loss from operations(12,867)(731)(41,768)(36,433)
Interest (expense) income, net(3,347)67 (6,896)1,244 
Other expense, net(605)(66)(1,965)(1,885)
Loss before income taxes(16,819)(730)(50,629)(37,074)
(Benefit) provision for income taxes(5,774)1,206 (3,952)5,657 
Net loss$(11,045)$(1,936)$(46,677)$(42,731)
Net loss per share, basic and diluted$(0.10)$(0.02)$(0.44)$(0.42)
Weighted-average shares used to compute net loss per share, basic and diluted108,235 103,203 106,387 101,009 
_______________
(1)    Includes stock-based compensation as follows:
Three Months Ended
December 31,
Year Ended
 December 31,
2021202020212020
Cost of revenue$1,110 $755 $4,446 $3,158 
Sales and marketing7,908 5,165 29,410 19,842 
Research and development5,674 4,000 20,593 14,794 
General and administrative6,380 5,652 24,956 21,779 
Total stock-based compensation$21,072 $15,572 $79,405 $59,573 
5


TENABLE HOLDINGS, INC.
CONSOLIDATED BALANCE SHEETS
(unaudited)
December 31,
(in thousands, except per share data)20212020
Assets
Current assets:
Cash and cash equivalents$278,000 $178,223 
Short-term investments
234,292 113,623 
Accounts receivable (net of allowance for doubtful accounts of $524 and $261 at December 31, 2021 and 2020, respectively)
136,601 115,342 
Deferred commissions40,311 32,143 
Prepaid expenses and other current assets60,234 44,462 
Total current assets 749,438 483,793 
Property and equipment, net 36,833 38,920 
Deferred commissions (net of current portion)59,638 46,733 
Operating lease right-of-use assets38,530 39,426 
Acquired intangible assets, net71,536 13,193 
Goodwill261,614 54,414 
Other assets 31,230 14,110 
Total assets $1,248,819 $690,589 
Liabilities and Stockholders' Equity
Current liabilities:
Accounts payable and accrued expenses$16,254 $5,731 
Accrued compensation54,051 35,509 
Deferred revenue407,498 328,819 
Operating lease liabilities2,320 3,815 
Other current liabilities3,759 1,028 
Total current liabilities 483,882 374,902 
Deferred revenue (net of current portion)123,387 105,691 
Term loan, net of issuance costs (net of current portion)364,728 — 
Operating lease liabilities (net of current portion)55,046 54,529 
Other liabilities 6,463 4,802 
Total liabilities 1,033,506 539,924 
Stockholders’ equity:
Common stock (par value: $0.01; 500,000 shares authorized, 108,929 and 103,715 shares issued and outstanding at December 31, 2021 and 2020, respectively)
1,089 1,037 
Additional paid-in capital869,059 757,470 
Accumulated other comprehensive (loss) income(306)10 
Accumulated deficit(654,529)(607,852)
Total stockholders’ equity215,313 150,665 
Total liabilities and stockholders' equity$1,248,819 $690,589 
6


TENABLE HOLDINGS, INC.
CONSOLIDATED STATEMENTS OF CASH FLOWS
(unaudited)
Year Ended December 31,
(in thousands)20212020
Cash flows from operating activities:
Net loss$(46,677)$(42,731)
Adjustments to reconcile net loss to net cash provided by operating activities:
Deferred income taxes(10,468)161 
Depreciation and amortization16,170 10,633 
Stock-based compensation79,405 59,573 
Other3,915 1,071 
Changes in operating assets and liabilities:
Accounts receivable(17,228)(20,012)
Prepaid expenses and other assets(46,207)(19,372)
Accounts payable, accrued expenses and accrued compensation24,330 (5,282)
Deferred revenue92,486 71,383 
Other current and noncurrent liabilities1,039 8,808 
Net cash provided by operating activities96,765 64,232 
Cash flows from investing activities:
Purchases of property and equipment
(6,561)(20,277)
Purchases of short-term investments(282,438)(184,516)
Sales and maturities of short-term investments160,874 209,148 
Purchase of other investments(5,000)— 
Business combinations, net of cash acquired(258,465)(276)
Net cash (used in) provided by investing activities(391,590)4,079 
Cash flows from financing activities:
Proceeds from term loan375,000 — 
Credit facility issuance costs(9,348)(333)
Proceeds from loan agreement— 2,000 
Proceeds from stock issued in connection with the employee stock purchase plan13,736 13,040 
Proceeds from the exercise of stock options18,268 21,709 
Other financing activities(10)(13)
Net cash provided by financing activities
397,646 36,403 
Effect of exchange rate changes on cash and cash equivalents and restricted cash
(3,013)(916)
Net increase in cash and cash equivalents and restricted cash99,808 103,798 
Cash and cash equivalents and restricted cash at beginning of year
178,463 74,665 
Cash and cash equivalents and restricted cash at end of year
$278,271 $178,463 

7


TENABLE HOLDINGS, INC.
REVENUE COMPONENTS AND RECONCILIATION OF GAAP TO NON-GAAP FINANCIAL MEASURES
(unaudited)
RevenueThree Months Ended
December 31,
Year Ended
 December 31,
(in thousands)2021202020212020
Subscription revenue$132,298 $102,162 $476,023 $377,354 
Perpetual license and maintenance revenue12,612 12,548 50,333 50,594 
Professional services and other revenue4,108 3,372 14,774 12,273 
Revenue(1)
$149,018 $118,082 $541,130 $440,221 
_______________
(1)    Recurring revenue, which includes revenue from subscription arrangements for software and cloud-based solutions and maintenance associated with perpetual licenses, represented 95% of revenue in the three months and year ended December 31, 2021 and 94% of revenue in the three months and year ended December 31, 2020.
Calculated Current BillingsThree Months Ended
December 31,
Year Ended
 December 31,
(in thousands)2021202020212020
Revenue$149,018 $118,082 $541,130 $440,221 
Deferred revenue (current), end of period407,498 328,819 407,498 328,819 
Deferred revenue (current), beginning of period(1)
(362,496)(296,360)(331,462)(274,348)
Calculated current billings$194,020 $150,541 $617,166 $494,692 
_______________
(1)    Deferred revenue (current), beginning of period for the three months and year ended December 31, 2021 includes $0.2 million and $2.6 million, respectively, related to acquired deferred revenue at the acquisition date, which is not included in deferred revenue (current) at September 30, 2021 and December 31, 2020, respectively.
Free Cash Flow and Unlevered Free Cash FlowThree Months Ended
December 31,
Year Ended
 December 31,
(in thousands)2021202020212020
Net cash provided by operating activities$21,972 $17,934 $96,765 $64,232 
Purchases of property and equipment(2,792)(1,204)(6,561)(20,277)
Free cash flow(1)
19,180 16,730 90,204 43,955 
Cash paid for interest and other financing costs3,214 81 4,978 335 
Unlevered free cash flow(1)
$22,394 $16,811 $95,182 $44,290 
________________
(1)    Free cash flow and unlevered free cash flow for the periods presented were impacted by:

Three Months Ended
December 31,
Year Ended
 December 31,
(in millions)2021202020212020
Employee stock purchase plan activity$4.4 $3.6 $(0.3)$0.9 
Acquisition-related expenses(2.9)— (6.5)(0.7)
Tax payment on intra-entity asset transfer— — 2.8 — 
Proceeds from lease incentives— — — 14.2 
Capital expenditures related to new headquarters— (0.6)(0.9)(17.2)
Free cash flow and unlevered free cash flow for the three months and year ended December 31, 2021 were reduced by approximately $8 million due to prepayments of software subscription costs, insurance and rent, and were offset by the benefit of approximately $4 million and $15 million, respectively, from prepayments of similar items made in 2020. The 2020 prepayments reduced free cash flow and unlevered free cash flow by approximately $17 million for the three months and year ended December 31, 2020.
8


Non-GAAP Income from Operations and Non-GAAP Operating MarginThree Months Ended
December 31,
Year Ended
 December 31,
(dollars in thousands)2021202020212020
Loss from operations$(12,867)$(731)$(41,768)$(36,433)
Stock-based compensation21,072 15,572 79,405 59,573 
Acquisition-related expenses931 — 6,901 339 
Amortization of acquired intangible assets2,743 578 6,447 2,314 
Non-GAAP income from operations$11,879 $15,419 $50,985 $25,793 
Operating margin(9)%(1)%(8)%(8)%
Non-GAAP operating margin%13 %%%
Non-GAAP Net Income and Non-GAAP Earnings Per ShareThree Months Ended
December 31,
Year Ended
 December 31,
(in thousands, except per share data)2021202020212020
Net loss$(11,045)$(1,936)$(46,677)$(42,731)
Stock-based compensation21,072 15,572 79,405 59,573 
Tax impact of stock-based compensation(1)
1,116 167 617 1,299 
Acquisition-related expenses(2)
931 — 6,901 339 
Amortization of acquired intangible assets(3)
2,743 578 6,447 2,314 
Tax impact of acquisitions(4)
(8,877)— (10,560)— 
Tax impact of intra-entity asset transfer(5)
— — 2,808 — 
Non-GAAP net income$5,940 $14,381 $38,941 $20,794 
Net loss per share, diluted$(0.10)$(0.02)$(0.44)$(0.42)
Stock-based compensation0.19 0.15 0.75 0.59 
Tax impact of stock-based compensation(1)
0.01 — 0.01 0.01 
Acquisition-related expenses(2)
0.01 — 0.06 — 
Amortization of acquired intangible assets(3)
0.02 0.01 0.06 0.02 
Tax impact of acquisitions(4)
(0.08)— (0.10)— 
Tax impact of intra-entity asset transfer(5)
— — 0.03 — 
Adjustment to diluted earnings per share(6)
— (0.01)(0.03)(0.01)
Non-GAAP earnings per share, diluted$0.05 $0.13 $0.34 $0.19 
Weighted-average shares used to compute GAAP net loss per share, diluted108,235103,203106,387101,009
Weighted-average shares used to compute non-GAAP earnings per share, diluted116,466112,691114,825109,962
________________
(1)    The tax impact of stock-based compensation is based on the tax treatment for applicable tax jurisdictions.
(2)    The tax impact of acquisition-related expenses is not material.
(3)    The tax impact of the amortization of acquired intangible assets is included in the tax impact of acquisitions.
(4)    The tax impact of acquisitions includes a reversal of the $7.9 million income tax benefit recognized for GAAP purposes in the three months and year ended December 31, 2021 related to the partial release of Tenable’s valuation allowance associated with the Accurics acquisition on October 1, 2021. In addition, the tax impact of acquisitions includes the reversal of $0.9 million and $2.6 million of deferred tax benefits in the three months and year ended December 31, 2021, respectively, related to the Alsid acquisition.
(5)    The tax impact of the intra-entity transfer is related to the internal restructuring of Indegy, resulting in a current tax payment based on the applicable Israeli tax rate.
(6)    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.
9


Non-GAAP Gross Profit and Non-GAAP Gross MarginThree Months Ended
December 31,
Year Ended
 December 31,
(dollars in thousands)2021202020212020
Gross profit$118,182 $97,765 $434,734 $362,667 
Stock-based compensation1,110 755 4,446 3,158 
Amortization of acquired intangible assets2,743 578 6,447 2,314 
Non-GAAP gross profit$122,035 $99,098 $445,627 $368,139 
Gross margin79 %83 %80 %82 %
Non-GAAP gross margin82 %84 %82 %84 %
Non-GAAP Sales and Marketing ExpenseThree Months Ended
December 31,
Year Ended
 December 31,
(dollars in thousands)2021202020212020
Sales and marketing expense$77,485 $55,934 $270,158 $224,277 
Less: Stock-based compensation7,908 5,165 29,410 19,842 
Less: Acquisition-related expenses119 — 119 — 
Non-GAAP sales and marketing expense$69,458 $50,769 $240,629 $204,435 
Non-GAAP sales and marketing expense % of revenue47 %43 %44 %46 %
Non-GAAP Research and Development ExpenseThree Months Ended
December 31,
Year Ended
 December 31,
(dollars in thousands)2021202020212020
Research and development expense$30,718 $24,418 $116,432 $101,687 
Less: Stock-based compensation5,674 4,000 20,593 14,794 
Less: Acquisition-related expenses139 — 139 — 
Non-GAAP research and development expense$24,905 $20,418 $95,700 $86,893 
Non-GAAP research and development expense % of revenue17 %17 %18 %20 %
Non-GAAP General and Administrative ExpenseThree Months Ended
December 31,
Year Ended
 December 31,
(dollars in thousands)2021202020212020
General and administrative expense$22,846 $18,144 $89,912 $73,136 
Less: Stock-based compensation6,380 5,652 24,956 21,779 
Less: Acquisition-related expenses673 — 6,643 339 
Non-GAAP general and administrative expense$15,793 $12,492 $58,313 $51,018 
Non-GAAP general and administrative expense % of revenue11 %11 %11 %12 %

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The following adjustments to reconcile forecasted non-GAAP income from operations, non-GAAP net income and non-GAAP earnings per share are subject to a number of uncertainties and assumptions, each of which are inherently difficult to forecast. As a result, actual adjustments and GAAP results may differ materially.
Forecasted Non-GAAP Income from OperationsThree Months Ended
March 31, 2022
Year Ended
 December 31, 2022
(in millions)LowHighLowHigh
Forecasted loss from operations$(21.3)$(20.3)$(98.5)$(93.5)
Forecasted stock-based compensation27.0 27.0 126.0 126.0 
Forecasted acquisition-related expenses1.9 1.9 2.1 2.1 
Forecasted amortization of acquired intangible assets(1)
2.4 2.4 10.4 10.4 
Forecasted non-GAAP income from operations$10.0 $11.0 $40.0 $45.0 
________________
(1)    The forecasted amortization of acquired intangible assets assumes $4 million of acquired intangible assets from Cymptom that is estimated to be amortized over seven years. These assumptions are preliminary, as the purchase accounting for Cymptom is not complete. Any changes to the valuation of intangible assets would impact the forecasted amortization of acquired intangible assets.
Forecasted Non-GAAP Net Income and Non-GAAP Earnings Per ShareThree Months Ended
March 31, 2022
Year Ended
 December 31, 2022
(in millions, except per share data)LowHighLowHigh
Forecasted net loss(1)
$(27.7)$(26.7)$(124.8)$(119.8)
Forecasted stock-based compensation27.0 27.0 126.0 126.0 
Forecasted tax impact of stock-based compensation1.2 1.2 3.0 3.0 
Forecasted acquisition-related expenses1.9 1.9 2.1 2.1 
Forecasted tax impact of acquisitions0.4 0.4 1.5 1.5 
Forecasted amortization of acquired intangible assets(2)
2.4 2.4 10.4 10.4 
Forecasted non-GAAP net income$5.2 $6.2 $18.2 $23.2 
Forecasted net loss per share, diluted(1)
$(0.25)$(0.24)$(1.12)$(1.07)
Forecasted stock-based compensation0.25 0.25 1.13 1.13 
Forecasted tax impact of stock-based compensation0.01 0.01 0.03 0.03 
Forecasted acquisition-related expenses0.02 0.02 0.02 0.02 
Forecasted tax impact of acquisitions— — 0.01 0.01 
Forecasted amortization of acquired intangible assets(2)
0.02 0.02 0.09 0.09 
Adjustment to diluted earnings per share(3)
(0.01)(0.01)(0.01)(0.02)
Forecasted non-GAAP earnings per share, diluted$0.04 $0.05 $0.15 $0.19 
Forecasted weighted-average shares used to compute GAAP net loss per share, diluted110.0110.0111.5111.5
Forecasted weighted-average shares used to compute non-GAAP earnings per share, diluted117.5117.5119.5119.5
________________
(1)    The forecasted GAAP net loss assumes a provision for income taxes of $2.9 million and $12.5 million in the three months ending March 31, 2022 and year ending December 31, 2022, respectively.
(2)    The forecasted amortization of acquired intangible assets assumes $4 million of acquired intangible assets from Cymptom that is estimated to be amortized over seven years. These assumptions are preliminary, as the purchase accounting for Cymptom is not complete. Any changes to the valuation of intangible assets would impact the forecasted amortization of acquired intangible assets and the tax impact of acquisitions.
(3)    Adjustment to reconcile GAAP net loss per share, which excludes potentially dilutive shares, to non-GAAP earnings per share, which includes potentially dilutive shares.

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