Biggest changeAdjusted EBITDA and adjusted EBITDA margin increased year-over-year primarily due to higher net income as a result of increased subscription revenue. 48 A reconciliation of net income to adjusted EBITDA and adjusted EBITDA margin is set forth below along with net income margin: Fiscal Year Ended March 31, 2022 2021 2020 (unaudited) (in thousands, except percentages) Net income $ 154,783 $ 50,210 $ 29,737 Adjusted to exclude the following: Acquisition and other related expenses 254 496 1,158 Stock-based compensation 31,442 7,252 2,353 Depreciation and amortization 5,040 3,702 900 Provision for (benefit from) income taxes (40,778) 7,559 (6,223) Other income, net (469) (4,466) (1,351) Adjusted EBITDA $ 150,272 $ 64,753 $ 26,574 Revenue $ 343,548 $ 206,897 $ 116,388 Net income margin 45 % 24 % 26 % Adjusted EBITDA margin 44 % 31 % 23 % Free Cash Flow Free cash flow is a key performance measure that our management uses to assess our overall performance.
Biggest changeOther companies, including other companies in our industry, may not use these measures or may calculate these measures differently than as presented in this Annual Report on Form 10-K, limiting their usefulness as comparative measures. 54 Table of Content s The following table presents a reconciliation of net income to adjusted EBITDA, adjusted EBITDA margin, and net income margin (in thousands, except percentages): Fiscal Year Ended March 31, 2023 2022 2021 Net income $ 112,818 $ 154,783 $ 50,210 Adjusted to exclude the following: Acquisition and other related expenses 30 254 496 Stock-based compensation 47,834 31,442 7,252 Depreciation and amortization 10,283 5,040 3,702 Provision for (benefit from) income taxes 20,338 (40,778) 7,559 Change in fair value of contingent earn-out consideration liability 728 — — Other income, net (8,048) (469) (4,466) Adjusted EBITDA $ 183,983 $ 150,272 $ 64,753 Revenue $ 419,052 $ 343,548 $ 206,897 Net income margin 27 % 45 % 24 % Adjusted EBITDA margin 44 % 44 % 31 % Free Cash Flow Free cash flow is a key performance measure that our management uses to assess our overall performance.
We expect our gross margin to remain relatively steady over the near term, although our quarterly gross margin is expected to fluctuate from period to period depending on the interplay of these and other factors. Operating Expenses Our operating expenses consist of sales and marketing, research and development, and general and administrative expenses.
We expect our gross margin to remain relatively steady over the near term, although our quarterly gross margin is expected to fluctuate from period to period depending on the interplay of these and other factors. Operating Expenses Our operating expenses consist of research and development, sales and marketing, and general and administrative expenses.
Net cash provided by financing activities Cash provided by financing activities was $560.4 million for the fiscal year ended March 31, 2022, which primarily consisted of $553.9 million of proceeds from the issuance of common stock upon our initial public offering after deducting underwriting fees and commissions, $12.6 million of net proceeds from the exercise of stock options, and $1.4 million of proceeds from the issuance of common stock in connection with the employee stock purchase plan.
Cash provided by financing activities was $560.4 million for the fiscal year ended March 31, 2022, which primarily consisted of $553.9 million of proceeds from the issuance of common stock upon our initial public offering after deducting underwriting fees and commissions, $12.6 million of net proceeds from the exercise of stock options, and $1.4 million of proceeds from the issuance of common stock in connection with the employee stock purchase plan.
Accordingly, we believe the below policies are the most critical to aid in fully understanding and evaluating our consolidated financial statements. 55 Revenue Recognition Marketing Solutions customers may purchase a subscription for a specific module to be used over a defined period of time. These customers may purchase more than one module with either the same or different subscription periods.
Accordingly, we believe the below policies are the most critical to aid in fully understanding and evaluating our consolidated financial statements. Revenue Recognition Marketing Solutions customers may purchase a subscription for a specific module to be used over a defined period of time. These customers may purchase more than one module with either the same or different subscription periods.
Net cash used in investing activities Cash used in investing activities was $640.6 million for the fiscal year ended March 31, 2022, which primarily consisted of purchases of marketable securities of $1.3 billion, partially offset by proceeds from the sale of marketable securities of $633.8 million, proceeds from the maturities of marketable securities of $47.9 million, and capitalization of internal-use software development costs of $3.8 million.
Cash used in investing activities was $640.6 million for the fiscal year ended March 31, 2022, which primarily consisted of purchases of marketable securities of $1.3 billion, partially offset by proceeds from the sale of marketable securities of $633.8 million, proceeds from the maturities of marketable securities of $47.9 million, and capitalization of internal-use software development costs of $3.8 million.
These decreases were partially offset by an increase of $8.7 million in accounts payable, accrued expenses and other liabilities, which was primarily a result of increased accrued payroll, bonus, 54 and related expenses due to increased headcount and timing of payments and increased rebate liabilities due to higher sales combined with the timing of payments.
These decreases were partially offset by an increase of $8.7 million in accounts payable, accrued expenses and other liabilities, which was primarily a result of increased accrued payroll, bonus, and related expenses due to increased headcount and timing of payments and increased rebate liabilities due to higher sales combined with the timing of payments.
Free cash flow has limitations as an analytical tool, and it should not be considered in isolation or as a substitute for analysis of other GAAP financial measures, such as cash provided by operating activities.
Free cash flow has limitations as an analytical tool, and it should not be considered in isolation or as a substitute for analysis of other GAAP financial measures, such as net cash provided by operating activities.
Gross profit and gross margin has been and will continue to be affected by a number of factors, including the timing of our acquisition of new customers and sa les of additional solutions to our existing customer s , the timing and extent of our investments in our operations, cloud hosting costs, growth in our customer success team, and the timing of amortization of internal-use software development costs.
Gross profit and gross margin has been and will continue to be affected by a number of factors, including the timing of our acquisition of new customers and sa les of additional solutions to existing customer s , the timing and extent of our investments in our operations, cloud hosting costs, growth in our customer success team, and the timing of amortization of internal-use software development costs and deferred contract costs.
We also support physicians in their day-to-day practice of medicine with mobile-friendly and easy-to-use clinical workflow tools such as voice and video dialer, secure messaging, and digital faxing. Our business model has delivered high revenue growth at scale, while increasing profitability.
We also support physicians in their day-to-day practice of medicine with mobile-friendly and easy-to-use clinical workflow tools such as voice and video dialer, secure messaging, and digital faxing. Our business model has delivered high revenue growth at scale with profitability.
General and Administrative General and administrative expense is primarily comprised of personnel-related expenses associated with our executive, finance, legal, human resources, information technology, and facilities employees. General and administrative expense includes fees for third-party legal and accounting services, recruitment fees, information technology and software-related costs, and allocated overhead.
General and Administrative General and administrative expense is primarily comprised of personnel-related expenses associated with our executive, finance, legal, human resources, information technology, and facilities employees. General and administrative expense includes fees for third-party legal and accounting services, insurance expense, information technology and software-related costs, and allocated overhead.
Our future capital requirements will depend on many factors, including our revenue growth rate, the timing and the amount of cash received from customers, the expansion of sales and marketing activities, and the timing and extent of spending to support research and development efforts.
Our future capital requirements will depend on many factors, including our revenue growth rate, the timing and the amount of cash received from customers, the expansion of sales and marketing activities, timing of share repurchases, and the timing and extent of spending to support research and development efforts.
This discussion contains forward-looking statements based upon current expectations that involve risks and uncertainties, as described under the heading “Special Note About Forward-Looking Statements” in this Annual Report on Form 10-K.
This discussion contains forward-looking statements based upon current expectations that involve risks and uncertainties, as described under the heading “Special Note Regarding Forward-Looking Statements” in this Annual Report on Form 10-K.
We expect that general and administrative expense will increase on an absolute dollar basis as we incur compliance costs associated with being a publicly-traded company, including legal, audit, and consulting fees. Other Income, Net Other income, net consists primarily of administrative fees and penalties and interest income earned on our cash equivalents and marketable securities.
We expect that general and administrative expense will increase on an absolute dollar basis as we incur compliance costs associated with being a publicly-traded company, including legal, audit, and consulting fees. Other Income, Net Other income, net consists primarily of investment income earned on our cash equivalents and marketable securities.
Our cloud-based platform provides our members with tools specifically built for medical professionals, enabling them to collaborate with their colleagues, securely coordinate patient care, conduct virtual patient visits, stay up-to-date with the latest medical news and research, and manage their careers. Doximity membership is free for physicians.
Our cloud-based platform provides our members with tools specifically built for medical professionals, enabling them to collaborate with their colleagues, securely coordinate patient care, conduct virtual patient visits, stay up-to-date with the latest medical news and research, monitor their work schedules, and manage their careers. Doximity membership is free for physicians.
These measures have certain limitations in that they do not include the impact of certain expenses that are reflected in our consolidated statement of operations that are necessary to run our business.
These measures have certain limitations in that they do not include the impact of certain expenses that are reflected in our consolidated statements of operations that are necessary to run our business.
Under the fair value recognition provisions of this guidance, stock-based compensation is measured at the grant date based on the fair value of the award and is recognized as expense, net of estimated forfeitures, in the statement of operations over the requisite service period, which is generally the vesting period of the respective award.
Under the fair value recognition provisions of this guidance, stock-based compensation is measured at the grant date based on the fair value of the award and is recognized as expense, net of estimated forfeitures, in the consolidated statements of operations over the requisite service period, which is generally the vesting period of the respective award.
A discussion regarding our financial condition and results of operations for the fiscal year ended March 31, 2022 compared to the fiscal year ended March 31, 2021 is presented below.
A discussion regarding our financial condition and results of operations for the fiscal year ended March 31, 2023 compared to the fiscal year ended March 31, 2022 is presented below.
For the fiscal years ended March 31, 2022, 2021 and 2020, we generated adjusted EBITDA of $150.3 million, $64.8 million, and $26.6 million, respectively. We have accomplished this while focusing on our core mission to help every physician be more productive and provide better care for their patients.
For the fiscal years ended March 31, 2023, 2022 and 2021, we generated adjusted EBITDA of $184.0 million, $150.3 million, and $64.8 million, respectively. We have accomplished this while focusing on our core mission to help every physician be more productive and provide better care for their patients.
We capitalize the sales commissions that are considered to be 50 incremental and recoverable costs of obtaining a contract with a customer. These sales commissions are amortized over the period of benefit. We expect sales and marketing expense to increase and to be our largest expense on an absolute basis.
We capitalize sales incentive compensation that is considered to be incremental and recoverable costs of obtaining a contract with a customer. These sales incentive compensation costs are amortized over the period of benefit. We expect sales and marketing expense to increase and to be our largest expense on an absolute basis.
To the extent that there are differences between our estimates and actual results, our future financial statement presentation, financial condition, results of operations, and cash flows will be affected.
To the extent that there are 55 Table of Content s differences between our estimates and actual results, our future financial statement presentation, financial condition, results of operations, and cash flows will be affected.
Our cost of revenue also includes the amortization of internal-use software development costs and deferred contract costs, editorial and other content-related expenses, and allocated overhead. Cost of revenue is also driven by the growth of our member network and utilization of our telehealth tools.
Our cost of revenue also includes the amortization of internal-use software development costs, editorial and other content-related expenses, and allocated overhead. Cost of revenue is driven by the 48 Table of Content s growth of our member network and utilization of our telehealth tools.
Our customers purchase a subscription to Marketing Solutions, either directly or through marketing agencies, for the ability to share tailored content on the Doximity platform via a variety of modules for defined time 49 periods.
Components of Results of Operations Revenue Marketing Solutions. Our customers purchase a subscription to Marketing Solutions, either directly or through marketing agencies, for the ability to share tailored content on the Doximity platform via a variety of modules for defined time periods.
Our free cash flow may not be comparable to similarly titled measures of other companies because they may not calculate free cash flow in the same manner as we calculate the measure, limiting its usefulness as a comparative measure. Components of Results of Operations Revenue Marketing Solutions.
Our free cash flow may not be comparable to similarly titled measures of other companies because they may not calculate free cash flow in the same manner as we calculate the measure, limiting its usefulness as a comparative measure.
The number of customers with trailing 12-month, or TTM, product revenue greater than $100,000 is calculated by counting the number of customers that contributed more than $100,000 in subscription revenue in the TTM period. The number of customers with TTM subscription-based revenue of at least $100,000 is a key indicator of the scale of our business.
The number of customers with trailing 12-month (“TTM”) subscription revenue greater than $100,000 is a key indicator of the scale of our business, and is calculated by counting the number of customers that contributed more than $100,000 in subscription revenue in the TTM period.
This consisted of net income of $154.8 million, adjusted for non-cash items of $12.1 million and a net decrease in operating assets and liabilities of $40.3 million.
This consisted of net income of $154.8 million, adjusted for non-cash items of $12.1 million and a net outflow in operating assets and liabilities of 53 Table of Content s $40.3 million.
We generally bill customers a portion of the contract upon contract execution and then bill throughout the remainder of the contract based on various time-based milestones. Generally, we bill in advance of revenue recognition and record unbilled revenue on the consolidated balance sheets within prepaid expenses and other current assets when revenue is recognized in advance of billings.
We generally bill customers a portion of the contract upon contract execution and then bill throughout the remainder of the contract based on various time-based milestones. Generally, we bill in advance of revenue recognition. When revenue is recognized in advance of billings, we record unbilled revenue.
Some of the limitations of free cash flow are that it may not properly reflect capital commitments to creators that need to be paid in the future or future contractual commitments that have not been realized in the current period.
Some of the limitations of free cash flow are that it may not properly reflect future contractual commitments that have not been realized in the current period.
For the fiscal years ended March 31, 2022, 2021 and 2020, we recognized revenue of $343.5 million, $206.9 million, and $116.4 million, respectively, representing year-over-year growth rates of 66% and 78%, respectively. Our net income was $154.8 million, $50.2 million, and $29.7 million for the fiscal years ended March 31, 2022, 2021, and 2020, respectively.
For the fiscal years ended March 31, 2023, 2022 and 2021, we recognized revenue of $419.1 million, $343.5 million, and $206.9 million, respectively, representing year-over-year growth rates of 22% and 66%, respectively. Our net income was $112.8 million, $154.8 million, and $50.2 million for the fiscal years ended March 31, 2023, 2022, and 2021, respectively.
Adjusted EBITDA is a key measure we use to assess our financial performance and is also used for internal planning and forecasting purposes. We believe adjusted EBITDA is helpful to investors, analysts, and other interested parties because it can assist in providing a more consistent and comparable overview of our operations across our historical financial periods.
We believe adjusted EBITDA is helpful to investors, analysts, and other interested parties because it can assist in providing a more consistent and comparable overview of our operations across our historical financial periods.
Our net revenue retention rate compares our subscription revenue from the same set of customers across comparable periods and reflects customer renewals, expansion, contraction, and churn.
Our net revenue retention rate compares our subscription revenue from the same set of customers across comparable periods, and reflects customer renewals, expansion, contraction, and churn. Our net revenue retention rate is directly tied to our revenue growth rate and thus fluctuates as that growth rate fluctuates.
As of March 31, 2022, our principal sources of liquidity were cash and cash equivalents and marketable securities of $798.1 million. Our marketable securities consist of U.S. government and agency securities, corporate notes and bonds, commercial paper, asset-backed securities, and sovereign bonds.
As of March 31, 2023, our principal sources of liquidity were cash and cash equivalents 52 Table of Content s and marketable securities of $841.0 million. Our marketable securities consist of U.S. government and agency securities, corporate notes and bonds, commercial paper, certificates of deposit, asset-backed securities, and sovereign bonds.
Our customer count is subject to adjustments for acquisitions, consolidations, spin-offs, and other market activity. The number of customers with at least $100,000 of revenue has grown steadily in recent years as we have engaged new customers and expanded within existing ones. This cohort of customers accounted for approximately 88% of our revenue in fiscal 2022.
Our customer count is subject to adjustments for acquisitions, consolidations, spin-offs, and other market activity, and we present our total customer count for historical periods reflecting these adjustments. 47 Table of Content s The number of customers with at least $100,000 of revenue has grown steadily in recent years as we have engaged new customers and expanded within existing ones.
Forfeitures are estimated based upon our historical experience and we revise the estimates, if necessary, in subsequent periods if actual forfeitures differ from initial estimates. Determining the grant-date fair value of stock options requires judgment. We estimate the fair value of restricted stock units, or RSUs, at our stock price on the grant date.
Forfeitures are estimated based upon our historical experience and we revise the estimates, if necessary, in subsequent periods if actual forfeitures differ from initial estimates. Determining the grant-date fair value of stock options, warrants, and purchase rights under the employee stock purchase plan, or ESPP, requires judgment.
Fiscal Year Ended March 31, 2022 2021 2020 (in thousands) Revenue $ 343,548 $ 206,897 $ 116,388 Cost of revenue (1) 39,787 31,196 14,900 Gross profit 303,761 175,701 101,488 Operating expenses: Research and development (1) 62,350 43,873 32,435 Sales and marketing (1) 92,129 62,033 39,448 General and administrative (1) 35,746 16,492 7,442 Total operating expenses 190,225 122,398 79,325 Income from operations 113,536 53,303 22,163 Other income, net 469 4,466 1,351 Income before income taxes 114,005 57,769 23,514 Provision for (benefit from) income taxes (40,778) 7,559 (6,223) Net income $ 154,783 $ 50,210 $ 29,737 _______________ (1) Costs and expenses include stock-based compensation expenses as follows: Fiscal Year Ended March 31, 2022 2021 2020 (in thousands) Cost of revenue $ 4,979 $ 600 $ 173 Research and development 7,065 1,975 710 Sales and marketing 8,108 1,998 847 General and administrative 11,290 2,679 623 Total stock-based compensation expense $ 31,442 $ 7,252 $ 2,353 51 Fiscal Year Ended March 31, 2022 2021 2020 (percentage of revenue) Revenue 100 % 100 % 100 % Cost of revenue 12 15 13 Gross profit 88 85 87 Operating expenses: Research and development 18 21 28 Sales and marketing 27 30 34 General and administrative 10 8 6 Total operating expenses 55 59 68 Income from operations 33 26 19 Other income, net — 2 1 Income before income taxes 33 28 20 Provision for (benefit from) income taxes (12) 4 (6) Net income 45 % 24 % 26 % Comparison of the Years Ended March 31, 2022 and 2021 Revenue Fiscal Year Ended March 31, Change 2022 2021 $ % (in thousands, except percentages) Revenue $ 343,548 $ 206,897 $ 136,651 66 % Revenue for the fiscal year ended March 31, 2022 increased $136.7 million as compared to the fiscal year ended 2021.
Fiscal Year Ended March 31, 2023 2022 2021 (in thousands) Revenue $ 419,052 $ 343,548 $ 206,897 Cost of revenue (1) 53,490 39,787 31,196 Gross profit 365,562 303,761 175,701 Operating expenses: Research and development (1) 80,186 62,350 43,873 Sales and marketing (1) 123,523 92,129 62,033 General and administrative (1) 36,745 35,746 16,492 Total operating expenses 240,454 190,225 122,398 Income from operations 125,108 113,536 53,303 Other income, net 8,048 469 4,466 Income before income taxes 133,156 114,005 57,769 Provision for (benefit from) income taxes 20,338 (40,778) 7,559 Net income $ 112,818 $ 154,783 $ 50,210 _______________ (1) Costs and expenses include stock-based compensation expense as follows: Fiscal Year Ended March 31, 2023 2022 2021 (in thousands) Cost of revenue $ 9,634 $ 4,979 $ 600 Research and development 12,583 7,065 1,975 Sales and marketing 16,939 8,108 1,998 General and administrative 8,678 11,290 2,679 Total stock-based compensation expense $ 47,834 $ 31,442 $ 7,252 Fiscal Year Ended March 31, 2023 2022 2021 (percentage of revenue) Revenue 100 % 100 % 100 % Cost of revenue 13 12 15 Gross profit 87 88 85 Operating expenses: Research and development 19 18 21 Sales and marketing 29 27 30 General and administrative 9 10 8 Total operating expenses 57 55 59 Income from operations 30 33 26 Other income, net 2 — 2 Income before income taxes 32 33 28 Provision for (benefit from) income taxes 5 (12) 4 Net income 27 % 45 % 24 % 50 Table of Content s Comparison of the Fiscal Years Ended March 31, 2023 and 2022 Revenue Fiscal Year Ended March 31, Change 2023 2022 $ % (in thousands, except percentages) Revenue $ 419,052 $ 343,548 $ 75,504 22 % Revenue for the fiscal year ended March 31, 2023 increased $75.5 million as compared to the fiscal year ended 2022.
The increase was primarily driven by a $127.0 million increase in subscription revenue. Of the increase in subscription revenue, $16.8 million was driven by the addition of new subscription customers 1 and $109.0 million was due to the expansion of existing customers.
The increase was primarily driven by a $70.4 million increase in subscription revenue. Of the increase in subscription revenue, $15.3 million was driven by the addition of new subscription customers 1 and $55.1 million was due to the expansion of existing customers.
General and administrative Fiscal Year Ended March 31, Change 2022 2021 $ % (in thousands, except percentages) General and administrative $ 35,746 $ 16,492 $ 19,254 117 % General and administrative expense for the fiscal year ended March 31, 2022 increased $19.3 million as compared to the fiscal year ended 2021.
General and administrative Fiscal Year Ended March 31, Change 2023 2022 $ % (in thousands, except percentages) General and administrative $ 36,745 $ 35,746 $ 999 3 % General and administrative expense for the fiscal year ended March 31, 2023 increased $1.0 million as compared to the fiscal year ended 2022.
Cash Flows Fiscal Year Ended March 31, 2022 2021 (in thousands) Net cash provided by operating activities $ 126,575 $ 82,973 Net cash used in investing activities $ (640,574) $ (70,417) Net cash provided by financing activities $ 560,415 $ 5,407 Net cash provided by operating activities Cash provided by operating activities was $126.6 million for the fiscal year ended March 31, 2022.
Cash Flows Fiscal Year Ended March 31, 2023 2022 (in thousands) Net cash provided by operating activities $ 179,602 $ 126,575 Net cash used in investing activities $ (59,923) $ (640,574) Net cash provided by (used in) financing activities $ (74,461) $ 560,415 Net cash provided by operating activities Cash provided by operating activities was $179.6 million for the fiscal year ended March 31, 2023.
This change was primarily driven by excess tax benefit on stock option exercise and disqualifying disposition activities following our initial public offering in June 2021. ___________________ NM: Percentage not meaningful. Liquidity and Capital Resources Since inception, we have financed operations primarily through proceeds received from sales of equity securities and payments received from our customers.
This change was primarily driven by a decrease in stock option activities resulting in a decrease in tax deductions and research and development tax credits. ___________________ NM: Percentage not meaningful. Liquidity and Capital Resources Since inception, we have financed operations primarily through proceeds received from sales of equity securities and payments received from our customers.
Subscriptions to Marketing Solutions include the following contractual arrangements: • Subscriptions for specific modules delivered on a monthly basis to a consistent number of targeted Doximity members during the subscription period.
Unbilled revenue is recorded on the consolidated balance sheets within prepaid expenses and other current assets. Subscriptions to Marketing Solutions include the following contractual arrangements: • Subscriptions for specific modules delivered on a monthly basis to a consistent number of targeted Doximity members during the subscription period.
Sales and Marketing Sales and marketing expense is primarily comprised of personnel-related expenses , sales commissions, travel, and other event expenses. Sales and marketing expense also includes costs for third-party services and contractors, information technology and software-related costs, and allocated overhead.
Sales and Marketing Sales and marketing expense is primarily comprised of personnel-related expenses , sales incentive compensation, travel, and other event expenses. Sales and marketing expense also includes costs for third-party services and contractors, information technology and software-related costs, allocated overhead, amortization of intangible assets, and change in fair value of contingent earn-out consideration liability.
We base our estimates and judgments on historical experience and on various other assumptions that we believe are reasonable under the circumstances. Actual results could differ significantly from the estimates made by management.
The preparation of our financial statements also requires us to make estimates and assumptions that affect the amounts stated in the consolidated financial statements and accompanying notes. We base our estimates and judgments on historical experience and on various other assumptions that we believe are reasonable under the circumstances. Actual results could differ significantly from the estimates made by management.
We use the Black-Scholes option-pricing model to determine the fair value of stock options, warrants, purchase rights under the employee stock purchase plan, or ESPP. The determination of the grant-date fair value using the Black-Scholes model is affected by the fair value of our common stock and assumptions regarding a number of other complex and subjective variables.
The determination of the grant-date fair value using the Black-Scholes model is affected by the fair value of our common stock and assumptions regarding a number of other complex and subjective variables.
Adjusted EBITDA We define adjusted EBITDA as net income before interest, income taxes, depreciation and amortization, and as further adjusted for acquisition and other related expenses, stock-based compensation expense, and other income, net. Net income margin represents net income as a percentage of revenue and adjusted EBITDA margin represents adjusted EBITDA as a percentage of revenue.
Adjusted EBITDA We define adjusted EBITDA as net income before interest, income taxes, depreciation, and amortization, and as further adjusted for acquisition and other related expenses, stock-based compensation expense, change in fair value of contingent earn-out consideration liability, and other income, net.
Revenue for temporary placement services is recognized net of third-party contractor fees. For the fiscal year ended March 31, 2022, the revenue from temporary and permanent medical recruiting services was not significant to our total revenue.
For the fiscal years ended March 31, 2023, 2022, and 2021, the revenue from temporary and permanent medical recruiting services was not significant to our total revenue.
March 31, 2022 2021 2020 Number of customers with at least $100,000 of revenue 265 200 141 Net Revenue Retention Rate. Net revenue retention rate is calculated by taking the TTM subscription-based revenue from our customers that had revenue in the prior TTM period and dividing that by the total subscription-based revenue for the prior TTM period.
Net Revenue Retention Rate. Net revenue retention rate is calculated by taking the TTM subscription-based revenue from our customers that had revenue in the prior TTM period and dividing that by the total subscription-based revenue for the prior TTM period.
The increase in cost of revenue was primarily driven by a $4.2 million increase in personnel-related costs as a result of headcount growth of 36%, $2.6 million increase in expense from the U.S.
The increase in cost of revenue was primarily driven by a $5.4 million increase in personnel-related costs as a result of headcount growth of 24%, and a $5.2 million increase in expense related to the U.S. News partnership, of which $2.8 million related to the U.S. News Warrant granted in October 2021.
The increase in research and development expense was primarily driven by a $9.8 million increase in personnel-related costs as a result of headcount growth of approximately 26%. The increase was also driven by a $5.1 million increase in stock-based compensation primarily attributable to headcount growth and an increase in the weighted-average grant date fair values of our equity grants.
The increase in research and development expense was primarily driven by a $9.6 million increase in personnel-related costs as a result of headcount growth of approximately 12%. The increase was also driven by a $5.5 million increase in stock-based compensation primarily attributable to headcount growth and awards granted to existing employees.
We continue to maintain a valuation allowance related to specific net deferred tax assets where it is not more likely than not that the deferred tax assets will be realized, which includes California research and development credits and capital loss carryforwards.
We continue to maintain a valuation allowance related to specific net deferred tax assets where it is not more likely than not that the deferred tax assets will be realized, which includes California research and development credits, California alternative minimum tax credits, and capital loss carryforwards. 49 Table of Content s Results of Operations The following tables set forth our consolidated results of operations data and such data as a percentage of revenue for the periods presented.
Goodwill represents the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recorded. 56 Recent Accounting Pronouncements Refer to Note 2—Summary of Significant Accounting Policies included in Part II, Item 8 of this Annual Report on Form 10-K for recently adopted accounting pronouncements and recently issued accounting pronouncements not yet adopted.
Recent Accounting Pronouncements Refer to Note 2—Summary of Significant Accounting Policies included in Part II, Item 8 of this Annual Report on Form 10-K for recently adopted accounting pronouncements and recently issued accounting pronouncements not yet adopted.
If we are unable to raise additional capital when desired, our business, financial condition, and results of operations could be adversely affected. For further details regarding our cash requirements from noncancelable operating lease obligations and other contractual commitments, see Note 13—Commitments and Contingencies included in Part II, Item 8 of this Annual Report on Form 10-K.
For further details regarding our cash requirements from noncancelable operating lease obligations and other contractual commitments, see Note 14—Commitments and Contingencies and Note 15—Leases included in Part II, Item 8 of this Annual Report on Form 10-K.
A discussion regarding our financial condition and results of operations for the fiscal year ended March 31, 2021 compared to the fiscal year ended March 31, 2020 can be found in “Management's Discussion and Analysis of Financial Condition and Results of Operations” in our Final Prospectus dated June 23, 2021, filed with the SEC pursuant to Rule 424(b) under the Securities Act on June 25, 2021.
A discussion regarding our financial condition and results of operations for the fiscal year ended March 31, 2022 compared to the fiscal year ended March 31, 2021 can be found in “Management's Discussion and Analysis of Financial Condition and Results of Operations” in our Annual Report on Form 10-K for the fiscal year ended March 31, 2022 and filed with the SEC on May 27, 2022.
The overall increase in sales and marketing expense was due to the growth in our business, specifically driven by a $10.7 million increase in personnel-related costs due to headcount growth of 23% as well as a $5.4 million increase in incentive compensation due to increased sales activity.
The increase in sales and marketing expense was primarily driven by a $9.5 million increase in personnel-related costs due to headcount growth of 17%.
The following table presents a reconciliation of our free cash flow to the most comparable GAAP measure, net cash provided by operating activities, for each of the periods indicated: Fiscal Year Ended March 31, 2022 2021 2020 (in thousands) Net cash provided by operating activities $ 126,575 $ 82,973 $ 26,199 Purchases of property and equipment (1,912) (245) (285) Internal-use software development costs (3,785) (4,365) (3,959) Free cash flow $ 120,878 $ 78,363 $ 21,955 Other cash flow components: Net cash used in investing activities $ (640,574) $ (70,417) $ (13,095) Net cash provided by financing activities $ 560,415 $ 5,407 $ 1,719 Although we believe free cash flow is a useful indicator of business performance, free cash flow is presented for supplemental informational purposes only and should not be considered a substitute for financial information presented in accordance with GAAP.
The following table presents a reconciliation of our free cash flow to the most comparable GAAP measure, net cash provided by operating activities, for each of the periods indicated (in thousands): Fiscal Year Ended March 31, 2023 2022 2021 Net cash provided by operating activities $ 179,602 $ 126,575 $ 82,973 Purchases of property and equipment (1,701) (1,912) (245) Internal-use software development costs (4,483) (3,785) (4,365) Free cash flow $ 173,418 $ 120,878 $ 78,363 Other cash flow components: Net cash used in investing activities $ (59,923) $ (640,574) $ (70,417) Net cash provided by (used in) financing activities $ (74,461) $ 560,415 $ 5,407 Critical Accounting Policies and Estimates Our consolidated financial statements and the related notes thereto included elsewhere in this Annual Report on Form 10-K are prepared in accordance with GAAP.
Cost of revenue, gross profit and gross margin Fiscal Year Ended March 31, Change 2022 2021 $ % (in thousands, except percentages) Cost of revenue $ 39,787 $ 31,196 $ 8,591 28 % Gross profit $ 303,761 $ 175,701 $ 128,060 73 % Gross margin 88 % 85 % Cost of revenue for the fiscal year ended March 31, 2022 increased $8.6 million as compared to the fiscal year ended 2021.
Cost of revenue, gross profit and gross margin Fiscal Year Ended March 31, Change 2023 2022 $ % (in thousands, except percentages) Cost of revenue $ 53,490 $ 39,787 $ 13,703 34 % Gross profit $ 365,562 $ 303,761 $ 61,801 20 % Gross margin 87 % 88 % Cost of revenue for the fiscal year ended March 31, 2023 increased $13.7 million as compared to the fiscal year ended 2022.
We bill annually or quarterly ahead of the service period, or at the beginning of each month of service, and recognize revenue ratably over the contractual term. Through our acquisition of Curative Talent, completed in fiscal 2021, we also generate revenue from temporary and permanent medical recruiting services which we charge on an hourly-fee and placement-fee basis, respectively.
Through our acquisition of Curative Talent, completed in fiscal 2021, we also generate revenue from temporary and permanent medical recruiting services which we charge on an hourly-fee, and retainer and placement-fee basis, respectively. Revenue for temporary placement services is recognized net of third-party contractor fees.
These proceeds were partially offset by $4.0 million in payments for deferred offering costs and $2.7 million in payments from the repurchase and retirement of common stock.
These proceeds were partially offset by $4.0 million in payments for deferred offering costs and $2.7 million in payments from the repurchase and retirement of common stock. Non-GAAP Financial Measures We use adjusted EBITDA and free cash flow to measure our performance, identify trends, formulate financial projections, and make strategic decisions.
These increases were partially offset by an increase of $20.5 million in accounts receivable due to the growth of our business and the timing of collections and an increase of $9.4 million in deferred contract costs due to increased sales activity.
The net outflow from operating assets and liabilities was driven by a $26.2 million increase in accounts receivable due to the growth of our business and the timing of collections, an $8.5 million increase in deferred contract costs due to increased sales activity, and a $3.4 million increase in prepaid expenses and other assets.
Cash used in investing activities was $70.4 million for the fiscal year ended March 31, 2021, which primarily consisted of purchases of marketable securities of $78.9 million and cash paid for the acquisition of Curative Talent of $31.7 million, partially offset by proceeds from the maturities of marketable securities of $40.5 million.
Net cash used in investing activities Cash used in investing activities was $59.9 million for the fiscal year ended March 31, 2023, which primarily consisted of $190.6 million of marketable securities purchases, $53.5 million paid for the acquisition of AMiON, $4.5 million for internal-use software development costs, and $1.7 million for purchases of property and equipment.
The expansion of existing customers was primarily driven by average revenue per existing Marketing Solutions customer increasing by 60% as a result of adding new brands and service lines, growing existing brands and service lines, and upselling additional modules. The remaining change in subscription revenue was generated from Dialer Pro subscriptions for individuals and small practices and other non-recurring items.
The expansion of existing customers was primarily driven by average revenue per existing Marketing Solutions customer increasing by 21% as a result of adding new and growing existing brands and service lines. Approximately 93% of our revenue for the fiscal year ended March 31, 2023 was derived from subscription customers.
Sales and marketing Fiscal Year Ended March 31, Change 2022 2021 $ % (in thousands, except percentages) Sales and marketing $ 92,129 $ 62,033 $ 30,096 49 % Sales and marketing expense for the fiscal year ended March 31, 2022 increased $30.1 million as compared to the fiscal year ended 2021.
Operating Expenses Research and development Fiscal Year Ended March 31, Change 2023 2022 $ % (in thousands, except percentages) Research and development $ 80,186 $ 62,350 $ 17,836 29 % Research and development expense for the fiscal year ended March 31, 2023 increased $17.8 million as compared to the fiscal year ended 2022.
We calculate free cash flow as cash flow from operating activities less purchases of property and equipment and internal-use software development costs.
We calculate free cash flow as cash flow from operating activities less purchases of property and equipment and internal-use software development costs. Although we believe free cash flow is a useful indicator of business performance, free cash flow is presented for supplemental informational purposes only and should not be considered a substitute for financial information presented in accordance with GAAP.
Approximately 93% of our revenue for the fiscal year ended March 31, 2022 was derived from subscription customers. The remaining increase in revenue was driven by an increase in medical recruiting services.
The remaining increase in revenue was driven by an increase in medical recruiting services.
Gross margin increased due to our revenue growth and continued efficiency as we scale. 1 We define new subscription customers as revenue generating subscription customers in the current fiscal period who did not contribute any revenue for the same period in the prior fiscal year. 52 Operating Expenses Research and development Fiscal Year Ended March 31, Change 2022 2021 $ % (in thousands, except percentages) Research and development $ 62,350 $ 43,873 $ 18,477 42 % Research and development expense for the fiscal year ended March 31, 2022 increased $18.5 million as compared to the fiscal year ended 2021.
In addition, there was a $1.9 million increase in third-party software costs as a result of increased research and development activities and a $1.1 million increase in employee events and travel-related expenses as compared to the prior period. 1 We define new subscription customers as revenue generating subscription customers in the current fiscal period who did not contribute any revenue for the same period in the prior fiscal year. 51 Table of Content s Sales and marketing Fiscal Year Ended March 31, Change 2023 2022 $ % (in thousands, except percentages) Sales and marketing $ 123,523 $ 92,129 $ 31,394 34 % Sales and marketing expense for the fiscal year ended March 31, 2023 increased $31.4 million as compared to the fiscal year ended 2022.
Cash provided by operating activities was $83.0 million for the fiscal year ended March 31, 2021. This consisted of net income of $50.2 million, adjusted for non-cash items of $21.2 million and a net increase in operating assets and liabilities of $11.6 million.
This consisted of net income of $112.8 million, adjusted for non-cash items of $87.8 million and a net outflow from operating assets and liabilities of $21.0 million.
Cash provided by financing activities was $5.4 million for the fiscal year ended March 31, 2021, which primarily consisted of $8.9 million of net proceeds from the exercise of stock options, partially offset by $1.5 million in payments for deferred offering costs and $2.0 million from the repurchase and retirement of common stock.
Net cash provided by (used in) financing activities Cash used in financing activities was $74.5 million for the fiscal year ended March 31, 2023, which primarily consisted of common stock repurchases of $85.3 million and $3.8 million of taxes paid related to the net share settlement of equity awards.
The decrease was primarily driven by a $4.7 million non-recurring gain that was recognized in October 2020 upon the sale of a portion of the Curative Talent business, offset by a $0.6 million increase in interest income due to our increased investment in marketable securities. 53 Provision for (benefit from) income taxes Fiscal Year Ended March 31, Change 2022 2021 $ % (in thousands, except percentages) Provision for (benefit from) income taxes $ (40,778) $ 7,559 $ (48,337) NM For the fiscal year ended March 31, 2022, we had an income tax benefit of $40.8 million compared to a provision of $7.6 million for the fiscal year ended 2021.
Provision for (benefit from) income taxes Fiscal Year Ended March 31, Change 2023 2022 $ % (in thousands, except percentages) Provision for (benefit from) income taxes $ 20,338 $ (40,778) $ 61,116 NM For the fiscal year ended March 31, 2023, we had income tax expense of $20.3 million compared to an income tax benefit of $40.8 million for the fiscal year ended 2022.
Non-cash items primarily consisted of stock-based compensation expense of $7.3 million, amortization of deferred contract costs of $6.9 million, deferred income tax expense of $5.0 million, and depreciation and amortization expense of $3.7 million, partially offset by a $4.7 million gain due to the sale of a portion of the Curative Talent business.
Non-cash items primarily consisted of stock-based compensation expense of $47.8 million, deferred income taxes of $13.2 million, depreciation and amortization expense of $10.3 million, amortization of deferred contract costs of $8.8 million, and amortization of the premium on marketable securities of $3.1 million.
Examples of critical estimates in valuing certain of the intangible assets we have acquired or may acquire in the future include but are not limited to future expected cash flows, future revenue growth, margins, customer retention rates, technology life, royalty rates, expected use of acquired assets, and discount rates.
The purchase price allocation process requires management to make significant judgment 56 Table of Content s and estimates, including the selection of valuation methodologies, estimates of future expected cash flows, future revenue growth, margins, customer retention rates, technology life, royalty rates, expected use of acquired assets, and discount rates.
In addition, there was a $2.8 million increase in personnel-related costs due to headcount growth of approximately 48%, a $3.1 million increase in insurance expense, and a $3.1 million increase in accounting, legal, and other services as we incurred additional expenses as a result of becoming a public company.
The increase in general and administrative expense was primarily driven by a $2.2 million increase in personnel-related costs due to headcount growth of 23%.
The increase was also driven by a $6.1 million increase in stock-based compensation mainly due to headcount growth and an increase in the weighted-average grant date fair values of our equity grants.
The increase was also driven by an $8.8 million increase in stock-based compensation expense, primarily due to headcount growth and awards granted to existing employees and a $4.9 million increase in costs related to employee events, travel, trade shows, conferences, and other marketing activities.
Other income, net Fiscal Year Ended March 31, Change 2022 2021 $ % (in thousands, except percentages) Other income, net $ 469 $ 4,466 $ (3,997) (89) % Other income, net for the fiscal year ended March 31, 2022 decreased $4.0 million compared to the fiscal year ended 2021.
Other income, net Fiscal Year Ended March 31, Change 2023 2022 $ % (in thousands, except percentages) Other income, net $ 8,048 $ 469 $ 7,579 1616 % Other income, net for the fiscal year ended March 31, 2023 increased $7.6 million as compared to the fiscal year ended 2022, primarily driven by increases in interest income due to higher yields earned on our cash equivalents and marketable securities portfolio and a higher average portfolio balance in fiscal 2023 as compared to fiscal 2022.