Zscaler Reports Fourth Quarter and Fiscal 2023 Financial Results


Fourth Quarter Highlights

  • Revenue grows 43% year-over-year to $455.0 million
  • Calculated billings grows 38% year-over-year to $719.3 million
  • Deferred revenue grows 41% year-over-year to $1,439.7 million
  • GAAP net loss of $30.7 million compared to GAAP net loss of $97.7 million on a year-over-year basis
  • Non-GAAP net income of $100.9 million compared to non-GAAP net income of $36.4 million on a year-over-year basis

SAN JOSE, Calif., Sept. 05, 2023 (GLOBE NEWSWIRE) -- Zscaler, Inc. (Nasdaq: ZS), the leader in cloud security, today announced financial results for its fiscal fourth quarter and fiscal year ended July 31, 2023.

"We concluded our fiscal year with strong top line growth and record operating profits. In less than two years, we doubled our annual recurring revenue, surpassing the $2 billion milestone. With cyber security as a high priority, IT executives are modernizing their legacy network security with our zero-trust architecture," said Jay Chaudhry, Chairman and CEO of Zscaler. “Our customers are realizing tremendous value from the new services and advanced capabilities delivered on our Zero Trust Exchange™ platform. We will continue to invest to delight our customers with more product innovations to capture the large opportunities ahead of us."        

Fourth Quarter Fiscal 2023 Financial Highlights

  • Revenue: $455.0 million, an increase of 43% year-over-year.
  • Income (loss) from operations: GAAP loss from operations was $44.6 million, or 10% of revenue, compared to $82.5 million, or 26% of revenue, in the fourth quarter of fiscal 2022. Non-GAAP income from operations was $86.0 million, or 19% of revenue, compared to $38.1 million, or 12% of revenue, in the fourth quarter of fiscal 2022.
  • Net income (loss): GAAP net loss was $30.7 million, compared to $97.7 million in the fourth quarter of fiscal 2022. Non-GAAP net income was $100.9 million, compared to $36.4 million in the fourth quarter of fiscal 2022.
  • Net income (loss) per share: GAAP net loss per share was $0.21, compared to $0.69 in the fourth quarter of fiscal 2022. Non-GAAP net income per share was $0.64, compared to $0.25 in the fourth quarter of fiscal 2022.
  • Cash flows: Cash provided by operations was $135.9 million, or 30% of revenue, compared to $103.1 million, or 32% of revenue, in the fourth quarter of fiscal 2022. Free cash flow was $101.3 million, or 22% of revenue, compared to $74.8 million, or 24% of revenue, in the fourth quarter of fiscal 2022.
  • Deferred revenue: $1,439.7 million as of July 31, 2023, an increase of 41% year-over-year.
  • Cash, cash equivalents and short-term investments: $2,100.2 million as of July 31, 2023, an increase of $368.9 million from July 31, 2022.

Full Year Fiscal 2023 Financial Highlights

  • Revenue: $1,617.0 million, an increase of 48% year-over-year.
  • Income (loss) from operations: GAAP loss from operations was $234.6 million, or 15% of revenue, compared to $327.4 million, or 30% of revenue, in fiscal 2022. Non-GAAP income from operations was $240.8 million, or 15% of revenue, compared to $111.6 million, or 10% of revenue, in fiscal 2022.
  • Net income (loss): GAAP net loss was $202.3 million, compared to $390.3 million in fiscal 2022. Non-GAAP net income was $277.0 million, compared to $101.3 million in fiscal 2022.
  • Net income (loss) per share: GAAP net loss per share was $1.40, compared to $2.77 in fiscal 2022. Non-GAAP net income per share was $1.79, compared to $0.69 in fiscal 2022.
  • Cash flows: Cash provided by operations was $462.3 million, or 29% of revenue, compared to $321.9 million, or 30% of revenue, in fiscal 2022. Free cash flow was $333.6 million, or 21% of revenue, compared to $231.3 million, or 21% of revenue, in fiscal 2022.

Recent Business Highlights

  • Launched new cybersecurity services, including Zscaler Risk360 and Zero Trust Branch Connectivity, that extend the capabilities of its industry-leading Zscaler Zero Trust Exchange cloud security platform to better identify, mitigate and manage large-scale attacks.

  • Released the findings of the 2023 ThreatLabz Ransomware Report, which tracks the ongoing increase in complex ransomware attacks and spotlights recent ransomware trends over a 12 month period. This year’s report revealed a nearly 40% increase in global ransomware attacks and details the rise of novel ransomware methods, such as encryption-less extortion and ransomware-as-a-service attacks.

  • Named a Fortune’s Best Workplaces for Millennials, a global recognition based on feedback provided by Zscaler employees.

  • Recognized as a Leader in three influential analyst reports from IDC, Dell’Oro and Information Services Group (ISG) evaluating market share and technical capabilities, further validating Zscaler’s position as a Leader in the 2023 Gartner® Magic Quadrant™ for Security Service Edge (SSE).

  • Announced a partnership with the Center for Internet Security, Inc. (CIS®), a non-profit cybersecurity organization committed to keeping the connected world a safer place, to make Zscaler zero trust security solutions available in CIS CyberMarket® to improve cybersecurity for state, local, tribal and territorial (SLTT) governments.

  • Released the results of the annual VPN Risk Report, which examines the complexity of today’s VPN management, user experience issues, vulnerabilities to diverse cyberattacks, and their potential to impair organizations’ broader security posture. This year’s report found that 88% of companies surveyed report being concerned that VPNs jeopardize their ability to maintain a secure environment.

Recently Issued Accounting Pronouncements

Effective August 1, 2022, the beginning of our fiscal year ending July 31, 2023, we adopted Accounting Standards Update No. 2020-06, Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging - Contracts in Entity’s Own Equity (Subtopic 815-40) (ASU 2020-06), using the modified retrospective transition method. The adoption of this standard resulted in the elimination of the debt discount and related amortization as interest expense and the classification of the portion of the debt issuance costs initially allocated to equity within the carrying amount of our convertible senior notes, which will be amortized as interest expense. Additionally, ASU 2020-06 amended the calculation of diluted earnings per share for certain convertible debt instruments, eliminating the treasury stock method and requiring the use of the if-converted method to compute the underlying potentially diluted shares. Accordingly, to account for the potentially diluted shares related to our convertible senior notes in the computation of our non-GAAP net income per share, we are required to add back the non-GAAP interest expense related to the convertible senior notes to our non-GAAP net income and include approximately 7.63 million shares related to our convertible senior notes beginning in our first quarter of fiscal year 2023.

Financial Outlook

For the first quarter of fiscal 2024, we expect:

  • Revenue of $472 million to $474 million
  • Non-GAAP income from operations of $70 million to $72 million
  • Non-GAAP net income per share of approximately $0.48 to $0.49, assuming approximately 159 million fully diluted shares outstanding using the "if-converted" method for our convertible senior notes

For the full year fiscal 2024, we expect:

  • Revenue of approximately $2.050 billion to $2.065 billion
  • Calculated billings of $2.52 billion to $2.56 billion
  • Non-GAAP income from operations of $330 million to $340 million
  • Non-GAAP net income per share of $2.20 to $2.25, assuming approximately 161 million fully diluted shares outstanding using the "if-converted" method for our convertible senior notes

These statements are forward-looking and actual results may differ materially. Refer to the Forward-Looking Statements safe harbor below for information on the factors that could cause our actual results to differ materially from these forward-looking statements.

In August 2023, we completed an assessment of the useful lives of our servers and networking equipment, which resulted in an extension of their useful lives from four to five years. This change will be effective beginning fiscal year 2024. Based on the carrying amount of these assets as of July 31, 2023, we expect the impact of this change to be approximately a 50 basis point benefit to our gross margin for the full fiscal year 2024. Guidance for non-GAAP income from operations excludes stock-based compensation expense and related employer payroll taxes, amortization expense of acquired intangible assets, amortization of debt issuance costs, and restructuring and other charges. As a result of the adoption of ASU 2020-06 on August 1, 2022, guidance for non-GAAP net income per share uses the if-converted method to calculate the potentially diluted shares related to the convertible senior notes. Accordingly, we are required to add back the non-GAAP interest expense related to the convertible senior notes to our non-GAAP net income and include approximately 7.63 million shares related to our convertible senior notes. Additionally, we include the anti-dilutive impact of the capped call transactions entered into in connection with the convertible senior notes. We have not reconciled our expectations of non-GAAP income from operations and non-GAAP net income per share to their most directly comparable GAAP measures because certain items are out of our control or cannot be reasonably predicted. For those reasons, we are also unable to address the probable significance of the unavailable information, the variability of which may have a significant impact on future results. Accordingly, a reconciliation for the guidance for non-GAAP income from operations and non-GAAP net income per share is not available without unreasonable effort.

In the third quarter of fiscal 2023, we updated our definition of non-GAAP income from operations to include restructuring and other charges.

For further information regarding why we believe that these non-GAAP measures provide useful information to investors, the specific manner in which management uses these measures, and some of the limitations associated with the use of these measures, please refer to the "Explanation of Non-GAAP Financial Measures" section of this press release.

Conference Call and Webcast Information

Zscaler will host a conference call for analysts and investors to discuss its fourth quarter of fiscal 2023 and outlook for its first quarter of fiscal 2024 and full year fiscal 2024 today at 1:30 p.m. Pacific time (4:30 p.m. Eastern time).

Date:Tuesday, September 5, 2023
Time:1:30 p.m. PT
Webcast:https://ir.zscaler.com 
Dial-in:To join by phone, register at the following link (https://register.vevent.com/register/BI62009b2f888848d1938949efa8f85072). After registering, you will be provided with a dial-in number and personal PIN required to join the call.

Upcoming Conferences

First quarter of fiscal 2024 investor conference participation schedule:

  • Goldman Sachs Communacopia + Technology Conference
    Wednesday, September 6, 2023
  • Wolfe Research TMT Conference
    Thursday, September 7, 2023
  • Piper Sandler Growth Frontiers Conference
    Tuesday, September 12, 2023

Sessions which offer a webcast will be available on the Investor Relations section of the Zscaler website at https://ir.zscaler.com.

Forward-Looking Statements

This press release contains forward-looking statements that involve risks and uncertainties, including, but not limited to, statements regarding our future financial and operating performance, including our financial outlook for the first quarter of fiscal 2024 and full year fiscal 2024. There are a significant number of factors that could cause actual results to differ materially from statements made in this press release, including but not limited to: macroeconomic influences and instability, including the ongoing effects of inflation, geopolitical events and the COVID-19 pandemic on our business, operations and financial results and the economy in general; risks related to the use of AI in our platform; the impact of a government default or shut-down; our limited operating history; our ability to identify and effectively implement the necessary changes to address execution challenges; risks associated with managing our rapid growth, including fluctuations from period to period; our limited experience with new product and subscription and support introductions and the risks associated with new products and subscription and support offerings, including the discovery of software bugs; our ability to attract and retain new customers; the failure to timely develop and achieve market acceptance of new products and subscriptions as well as existing products and subscription and support; rapidly evolving technological developments in the market for network security products and subscription and support offerings and our ability to remain competitive; length of sales cycles; and general market, political, economic and business conditions.

Additional risks and uncertainties that could affect our financial results are included under the captions “Risk Factors” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” set forth from time to time in our filings and reports with the Securities and Exchange Commission (SEC), including our Quarterly Report on Form 10-Q for the fiscal quarter ended April 30, 2023 filed on June 7, 2023, as well as future filings and reports by us, copies of which are available on our website at ir.zscaler.com and on the SEC’s website at www.sec.gov. You should not rely on these forward-looking statements, as actual outcomes and results may differ materially from those contemplated by these forward-looking statements as a result of such risks and uncertainties. Additional information will also be set forth in other filings that we make with the SEC from time to time. All forward-looking statements in this press release are based on information available to us as of the date hereof, and we do not assume any obligation to update the forward-looking statements provided to reflect events that occur or circumstances that exist after the date on which they were made.

Use of Non-GAAP Financial Information

We believe that the presentation of non-GAAP financial information provides important supplemental information to management and investors regarding financial and business trends relating to our financial condition and results of operations. For further information regarding why we believe that these non-GAAP measures provide useful information to investors, the specific manner in which management uses these measures, and some of the limitations associated with the use of these measures, please refer to the “Explanation of Non-GAAP Financial Measures” section of this press release.

About Zscaler

Zscaler (Nasdaq: ZS) accelerates digital transformation so customers can be more agile, efficient, resilient, and secure. The Zscaler Zero Trust Exchange™ platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Distributed across more than 150 data centers globally, the SSE-based Zero Trust Exchange is the world’s largest in-line cloud security platform.

Zscaler™ and the other trademarks listed at https://www.zscaler.com/legal/trademarks are either (i) registered trademarks or service marks or (ii) trademarks or service marks of Zscaler, Inc. in the United States and/or other countries. Any other trademarks are the properties of their respective owners.

Investor Relations Contacts

Bill Choi, CFA
SVP, Investor Relations and Strategic Finance
(408) 816-1478
ir@zscaler.com 

Natalia Wodecki
Media Relations Contact
press@zscaler.com 

ZSCALER, INC.
Condensed Consolidated Statements of Operations
(in thousands, except per share amounts)
(unaudited)
        
 Three Months Ended Year Ended
 July 31, July 31,
  2023   2022   2023   2022 
Revenue$455,006  $318,059  $1,616,952  $1,090,946 
Cost of revenue(1) (2) 102,682   68,308   362,832   242,282 
Gross profit 352,324   249,751   1,254,120   848,664 
Operating expenses:       
Sales and marketing(1) (2) 252,810   214,228   953,864   735,219 
Research and development(1) (2) 96,387   78,150   349,735   289,139 
General and administrative(1) 46,380   39,902   177,544   151,735 
Restructuring and other charges(1) 1,299      7,600    
Total operating expenses 396,876   332,280   1,488,743   1,176,093 
Loss from operations (44,552)  (82,529)  (234,623)  (327,429)
Interest income 21,351   2,607   60,462   4,586 
Interest expense(3) (4) (2,494)  (14,458)  (6,541)  (56,579)
Other expense, net (331)  (774)  (1,862)  (4,208)
Loss before income taxes (26,026)  (95,154)  (182,564)  (383,630)
Provision for income taxes 4,648   2,498   19,771   6,648 
Net loss$(30,674) $(97,652) $(202,335) $(390,278)
Net loss per share, basic and diluted$(0.21) $(0.69) $(1.40) $(2.77)
Weighted-average shares used in computing net loss per share, basic and diluted 146,424   142,355   144,942   140,895 

(1) Includes stock-based compensation expense and related payroll taxes as follows:

Cost of revenue$12,016  $7,696  $40,297  $25,292 
Sales and marketing 60,181   57,505   222,280   202,211 
Research and development 34,742   33,486   121,151   123,422 
General and administrative 19,336   19,628   73,051   79,095 
Restructuring and other charges       1,036    
Total$126,275  $118,315  $457,815  $430,020 

(2) Includes amortization expense of acquired intangible assets as follows:

Cost of revenue$2,765  $1,939  $9,574  $7,975 
Sales and marketing 217   178   773   704 
Research and development    198   713   331 
Total$2,982  $2,315  $11,060  $9,010 


(3)Includes amortization of debt discount and issuance costs as follows(4):$975  $14,098  $3,894  $55,141 

(4) Effective August 1, 2022, we adopted ASU 2020-06 using the modified retrospective method under which prior period amounts have not been adjusted. The adoption of this standard resulted in the elimination of the debt discount and related amortization as interest expense and the classification of the portion of the debt issuance costs initially allocated to equity within the carrying amount of the convertible senior notes, which will be recognized as interest expense.

ZSCALER, INC.
Condensed Consolidated Balance Sheets
(in thousands)
(unaudited)
 July 31, July 31,
  2023   2022 
Assets   
Current assets:   
Cash and cash equivalents$1,262,206  $1,013,210 
Short-term investments 838,026   718,129 
Accounts receivable, net 582,636   399,745 
Deferred contract acquisition costs 115,827   86,210 
Prepaid expenses and other current assets 91,619   39,353 
Total current assets 2,890,314   2,256,647 
Property and equipment, net 242,355   160,633 
Operating lease right-of-use assets 70,671   72,357 
Deferred contract acquisition costs, noncurrent 259,407   210,792 
Acquired intangible assets, net 25,859   31,819 
Goodwill 89,192   78,547 
Other noncurrent assets 30,519   21,870 
Total assets$3,608,317  $2,832,665 
    
Liabilities and Stockholders’ Equity   
Current liabilities:   
Accounts payable$18,481  $26,154 
Accrued expenses and other current liabilities 64,975   46,496 
Accrued compensation 136,800   111,948 
Deferred revenue 1,281,143   923,749 
Operating lease liabilities 34,469   26,100 
Total current liabilities 1,535,868   1,134,447 
Convertible senior notes, net(1) 1,134,159   968,674 
Deferred revenue, noncurrent 158,533   97,374 
Operating lease liabilities, noncurrent 41,917   50,948 
Other noncurrent liabilities 12,728   7,922 
Total liabilities 2,883,205   2,259,365 
Stockholders’ Equity   
Common stock 147   143 
Additional paid-in capital 1,816,915   1,590,885 
Accumulated other comprehensive loss (1,576)  (25,850)
Accumulated deficit (1,090,374)  (991,878)
Total stockholders’ equity 725,112   573,300 
Total liabilities and stockholders’ equity$3,608,317  $2,832,665 

_________
(1) Effective August 1, 2022, we adopted ASU 2020-06 using the modified retrospective method under which prior period amounts have not been adjusted. The adoption of this standard resulted in the elimination of the debt discount and related amortization as interest expense and the classification of the portion of the debt issuance costs initially allocated to equity within the carrying amount of our convertible senior notes, which will be recognized as interest expense.

ZSCALER, INC.
Condensed Consolidated Statements of Cash Flows
(in thousands)
(unaudited)
 Year Ended
 July 31,
  2023   2022 
Cash Flows from Operating Activities   
Net loss$(202,335) $(390,278)
Adjustments to reconcile net loss to cash provided by operating activities:   
Depreciation and amortization expense 55,756   40,456 
Amortization expense of acquired intangible assets 11,060   9,010 
Amortization of deferred contract acquisition costs 98,718   68,531 
Amortization of debt discount and issuance costs(1) 3,894   55,141 
Non-cash operating lease costs 32,212   25,626 
Stock-based compensation expense 444,834   409,562 
Amortization (accretion) of investments purchased at a premium (discount) (6,582)  6,580 
Unrealized (gains) losses on hedging transactions (3,319)  1,499 
Deferred income taxes 352   (562)
Other (820)  (1,104)
Changes in operating assets and liabilities, net of effects of business acquisitions   
Accounts receivable (183,858)  (143,336)
Deferred contract acquisition costs (176,950)  (158,503)
Prepaid expenses, other current and noncurrent assets (39,922)  (10,287)
Accounts payable (8,416)  14,358 
Accrued expenses, other current and noncurrent liabilities 26,814   13,377 
Accrued compensation 24,538   18,326 
Deferred revenue 418,564   391,179 
Operating lease liabilities (32,197)  (27,663)
Net cash provided by operating activities 462,343   321,912 
Cash Flows from Investing Activities   
Purchases of property, equipment and other assets (97,197)  (69,296)
Capitalized internal-use software (31,527)  (21,284)
Payments for business acquisitions, net of cash acquired (15,643)  (25,287)
Purchase of strategic investments (3,206)   
Purchases of short-term investments (1,064,143)  (844,944)
Proceeds from maturities of short-term investments 901,849   1,334,874 
Proceeds from sale of short-term investments 50,530    
Net cash provided by (used in) investing activities (259,337)  374,063 
Cash Flows from Financing Activities   
Proceeds from issuance of common stock upon exercise of stock options 3,944   6,943 
Proceeds from issuance of common stock under the employee stock purchase plan 42,263   34,649 
Payment of deferred consideration related to business acquisitions (215)  (250)
Other (2)  (5)
Net cash provided by financing activities 45,990   41,337 
Net increase in cash and cash equivalents 248,996   737,312 
Cash and cash equivalents at beginning of period 1,013,210   275,898 
Cash and cash equivalents at end of period$1,262,206  $1,013,210 

_________

(1) Effective August 1, 2022, we adopted ASU 2020-06 using the modified retrospective method under which prior period amounts have not been adjusted. The adoption of this standard resulted in the elimination of the debt discount and related amortization as interest expense and the classification of the portion of the debt issuance costs initially allocated to equity within the carrying amount of the convertible senior notes, which will be recognized as interest expense.

ZSCALER, INC.
Reconciliation of GAAP to Non-GAAP Financial Measures
(in thousands, except percentages)
(unaudited)
        
 Three Months Ended Year Ended
 July 31, July 31,
  2023   2022   2023   2022 
        
Revenue$455,006  $318,059  $1,616,952  $1,090,946 
        
Non-GAAP Gross Profit and Non-GAAP Gross Margin       
GAAP gross profit$352,324  $249,751  $1,254,120  $848,664 
Add: Stock-based compensation expense and related payroll taxes 12,016   7,696   40,297   25,292 
Add: Amortization expense of acquired intangible assets 2,765   1,939   9,574   7,975 
Non-GAAP gross profit$367,105  $259,386  $1,303,991  $881,931 
GAAP gross margin 77%  79%  78%  78%
Non-GAAP gross margin 81%  82%  81%  81%
        
Non-GAAP Income from Operations and Non-GAAP Operating Margin       
GAAP loss from operations$(44,552) $(82,529) $(234,623) $(327,429)
Add: Stock-based compensation expense and related payroll taxes(1) 126,275   118,315   457,815   430,020 
Add: Amortization expense of acquired intangible assets 2,982   2,315   11,060   9,010 
Add: Restructuring and other charges, excluding stock-based compensation expense(1) 1,299      6,564    
Non-GAAP income from operations$86,004  $38,101  $240,816  $111,601 
GAAP operating margin(10)% (26)% (15)% (30)%
Non-GAAP operating margin 19%  12%  15%  10%

(1) In connection with a restructuring plan announced in March 2023, we incurred stock-based compensation expense of approximately $1.0 million for the year ended July 31, 2023, which is included in stock-based compensation expense and related payroll taxes.

ZSCALER, INC.
Reconciliation of GAAP to Non-GAAP Financial Measures
(in thousands, except per share amounts)
(unaudited)
        
 Three Months Ended Year Ended
 July 31, July 31,
  2023   2022   2023   2022 
Non-GAAP Net Income per Share, Diluted       
GAAP net loss$(30,674) $(97,652) $(202,335) $(390,278)
Stock-based compensation expense and related payroll taxes(1) 126,275   118,315   457,815   430,020 
Amortization expense of acquired intangible assets 2,982   2,315   11,060   9,010 
Restructuring and other charges, excluding stock-based compensation expense(1) 1,299      6,564    
Amortization of debt discount and issuance costs(2) 975   14,098   3,894   55,141 
Benefit for income taxes(3)    (682)     (2,597)
Non-GAAP net income$100,857  $36,394  $276,998  $101,296 
        
Add: Non-GAAP interest expense related to the convertible senior notes(2) 359      1,437    
Numerator used in computing non-GAAP net income per share, diluted$101,216  $36,394  $278,435  $101,296 
        
GAAP net loss per share, diluted$(0.21) $(0.69) $(1.40) $(2.77)
Stock-based compensation expense and related payroll taxes(1) 0.80   0.81   2.94   2.92 
Amortization expense of acquired intangible assets 0.02   0.02   0.07   0.06 
Restructuring and other charges, excluding stock-based compensation expense(1) 0.01      0.04    
Amortization of debt discount and issuance costs 0.01   0.10   0.03   0.37 
Benefit for income taxes(3)          (0.02)
Non-GAAP interest expense related to the convertible senior notes(2)       0.01    
Adjustment to total fully diluted earnings per share(4) 0.01   0.01   0.10   0.13 
Non-GAAP net income per share, diluted(2)$0.64  $0.25  $1.79  $0.69 
        
Weighted-average shares used in computing GAAP net loss per share, diluted 146,424   142,355   144,942   140,895 
Add: Outstanding equity incentive awards 3,265   4,052   3,174   6,357 
Add: Convertible senior notes(2) 7,626   208   7,626   2,875 
Less: Antidilutive impact of capped call transactions(5)    (208)     (2,875)
Weighted-average shares used in computing non-GAAP net income per share, diluted(2) 157,315   146,407   155,742   147,252 

___________

(1) In connection with a restructuring plan announced in March 2023, we incurred stock-based compensation expense of approximately $1.0 million for the year ended July 31, 2023, which is included in stock-based compensation expense and related payroll taxes.

(2) Effective August 1, 2022, we adopted ASU 2020-06 using the modified retrospective method under which prior period amounts have not been adjusted. The adoption of this standard resulted in the elimination of the debt discount and related amortization as interest expense and the classification of the portion of the debt issuance costs initially allocated to equity within the carrying amount of the convertible senior notes, which will be recognized as interest expense. Additionally, this standard amended the calculation of diluted earnings per share for certain convertible debt instruments, eliminating the treasury stock method and requiring the use of the if-converted method to compute the underlying potentially diluted shares. Accordingly, to account for the potentially diluted shares related to the convertible senior notes, we are required to add back the non-GAAP interest expense related to the convertible senior notes to our non-GAAP net income and include approximately 7.63 million shares related to the convertible senior notes beginning in our first quarter of fiscal year 2023.

(3) We use our GAAP provision for income taxes for purposes of determining our non-GAAP income tax expense. The difference between our GAAP and non-GAAP income tax expense represents the effects of stock-based compensation expense recognized in foreign jurisdictions. The income tax benefit related to stock-based compensation expense included in the GAAP provision for income taxes was not material for all periods presented. In the fiscal quarters ended July 31, 2022 and January 31, 2022, we recorded a tax benefit of $0.7 million and $0.4 million, respectively, generated by intangible assets acquired in business acquisitions. In the fiscal quarter ended April 30, 2022, we recorded a tax benefit of $1.5 million associated with a refund of certain foreign withholding taxes relating to the prior fiscal year.

(4) The sum of the fully diluted earnings per share impact of individual reconciling items may not total to fully diluted non-GAAP net income per share due to the weighted-average shares used in computing the GAAP net loss per share differing from the weighted-average shares used in computing the non-GAAP net income per share and due to rounding of the individual reconciling items. The GAAP net loss per share calculation uses a lower share count as it excludes potentially dilutive shares, which are included in calculating the non-GAAP net income per share.

(5) We exclude the in-the-money portion of the convertible senior notes for non-GAAP weighted-average diluted shares as they are covered by our capped call transactions. Our outstanding capped call transactions are antidilutive under GAAP, but are expected to mitigate the dilutive effect of the convertible senior notes and therefore are included in the calculation of non-GAAP diluted shares outstanding. No antidilutive impact was reflected in the year ended July 31, 2023, as the average stock price of our common stock during such periods was lower than the capped calls’ exercise price.

ZSCALER, INC.
Reconciliation of GAAP to Non-GAAP Financial Measures
(in thousands, except percentages)
(unaudited)
        
 Three Months Ended Year Ended
 July 31, July 31,
  2023   2022   2023   2022 
Calculated billings       
Revenue$455,006  $318,059  $1,616,952  $1,090,946 
Add: Total deferred revenue, end of period 1,439,676   1,021,123   1,439,676   1,021,123 
Less: Total deferred revenue, beginning of period (1,175,373)  (818,743)  (1,021,123)  (630,601)
Calculated billings$719,309  $520,439  $2,035,505  $1,481,468 
        
Free cash flow       
Net cash provided by operating activities$135,936  $103,138  $462,343  $321,912 
Less: Purchases of property, equipment and other assets (27,070)  (21,250)  (97,197)  (69,296)
Less: Capitalized internal-use software (7,565)  (7,117)  (31,527)  (21,284)
Free cash flow$101,301  $74,771  $333,619  $231,332 
        
Free cash flow margin       
Net cash provided by operating activities, as a percentage of revenue 30%  32%  29%  30%
Less: Purchases of property, equipment and other assets, as a percentage of revenue(6)% (6)% (6)% (7)%
Less: Capitalized internal-use software, as a percentage of revenue(2)% (2)% (2)% (2)%
Free cash flow margin 22%  24%  21%  21%

ZSCALER, INC.
Explanation of Non-GAAP Financial Measures

In addition to our results determined in accordance with generally accepted accounting principles in the United States of America (GAAP), we believe the following non-GAAP measures are useful in evaluating our operating performance. We use the following non-GAAP financial information to evaluate our ongoing operations and for internal planning and forecasting purposes. We believe that non-GAAP financial information, when taken collectively, may be helpful to investors because it provides consistency and comparability with past financial performance. However, non-GAAP financial information is presented for supplemental informational purposes only, has limitations as an analytical tool and should not be considered in isolation or as a substitute for financial information presented in accordance with GAAP. In particular, free cash flow is not a substitute for cash provided by operating activities. Additionally, the utility of free cash flow as a measure of our liquidity is further limited as it does not represent the total increase or decrease in our cash balance for a given period. In addition, other companies, including companies in our industry, may calculate similarly-titled non-GAAP measures differently or may use other measures to evaluate their performance, all of which could reduce the usefulness of our non-GAAP financial measures as tools for comparison. A reconciliation of our historical non-GAAP financial measures to their most directly comparable financial measures stated in accordance with GAAP has been included in this press release. Investors are cautioned that there are a number of limitations associated with the use of non-GAAP financial measures and key metrics as analytical tools. Investors are encouraged to review these reconciliations, and not to rely on any single financial measure to evaluate our business.

Expenses Excluded from Non-GAAP Measures

Stock-based compensation expense is excluded primarily because it is a non-cash expense that management believes is not reflective of our ongoing operational performance. Employer payroll taxes related to stock-based compensation, which is a cash expense, are excluded because these are tied to the timing and size of the exercise or vesting of the underlying equity awards and the price of our common stock at the time of vesting or exercise, which may vary from period to period independent of the operating performance of our business. Amortization expense of intangible assets acquired in business acquisitions and related income tax effects, if applicable, are excluded because these are considered by management to be outside of our core business operating performance. Restructuring and other charges includes severance and termination benefits in connection with a restructuring plan to streamline operations and to align people, roles and projects to our strategic priorities. These expenses are excluded because they fluctuate in amount and frequency and are not reflective of our core business operating performance. Amortization of debt discount and issuance costs from the convertible senior notes are excluded because these are non-cash expenses and are not reflective of our ongoing operational performance. We estimate the tax effect of these items on our non-GAAP results and may adjust our GAAP provision for income taxes, if such effects have a material impact to our non-GAAP results.

Non-GAAP Financial Measures

Non-GAAP Gross Profit and Non-GAAP Gross Margin. We define non-GAAP gross profit as GAAP gross profit excluding stock-based compensation expense and related employer payroll taxes and amortization expense of acquired intangible assets. We define non-GAAP gross margin as non-GAAP gross profit as a percentage of revenue.

Non-GAAP Income from Operations and Non-GAAP Operating Margin. We define non-GAAP income from operations as GAAP loss from operations excluding stock-based compensation expense and related employer payroll taxes, amortization expense of acquired intangible assets and restructuring and other charges. We define non-GAAP operating margin as non-GAAP income from operations as a percentage of revenue.

Non-GAAP Net Income per Share, Diluted. We define non-GAAP net income as GAAP net loss excluding stock-based compensation expense and related employer payroll taxes, amortization expense of acquired intangible assets, restructuring and other charges, amortization of debt discount and issuance costs, and income tax effects generated by the effects of stock-based compensation expense recognized in foreign jurisdictions. We define non-GAAP net income per share, diluted, as non-GAAP net income plus the non-GAAP interest expense divided by the weighted-average diluted shares outstanding, which includes the effect of potentially diluted common stock equivalents outstanding during the period and the anti-dilutive impact of the capped call transactions entered into in connection with the convertible senior notes.

Calculated Billings. We define calculated billings as revenue plus the change in deferred revenue in a period. Calculated billings in any particular period aims to reflect amounts invoiced for subscriptions to access our cloud platform, together with related support services for our new and existing customers. We typically invoice our customers annually in advance, and to a lesser extent quarterly in advance, monthly in advance or multi-year in advance.

Free Cash Flow and Free Cash Flow Margin. We define free cash flow as net cash provided by operating activities less purchases of property, equipment and other assets and capitalized internal-use software. We define free cash flow margin as free cash flow divided by revenue. We believe that free cash flow and free cash flow margin are useful indicators of liquidity that provide information to management and investors about the amount of cash generated from our operations that, after the investments in property, equipment and other assets and capitalized internal-use software, can be used for strategic initiatives.