Biggest changeOur total revenue is summarized as follows (in thousands): Year Ended December 31, 2023 2022 2021 Create Solutions $ 859,174 $ 716,078 $ 506,920 Grow Solutions 1,328,143 674,946 603,606 Total revenue $ 2,187,317 $ 1,391,024 $ 1,110,526 The increase in total revenue for the year ended December 31, 2023, compared to the comparable prior year period, was primarily due to the acquisition and inclusion of revenue from ironSource within Grow Solutions.
Biggest changeOur total revenue is summarized as follows (in thousands): Year Ended December 31, 2024 2023 2022 Create Solutions $ 613,966 $ 859,174 $ 716,078 Grow Solutions 1,199,289 1,328,143 674,946 Total revenue $ 1,813,255 $ 2,187,317 $ 1,391,024 Total revenue decreased in the year ended December 31, 2024, compared to the comparable prior year period, primarily due to a decrease in Create Solutions revenue, primarily due to the termination of the subscription agreement with Wētā FX Limited, which includes approximately $99 million of incremental revenue in the fourth quarter of 2023 from terminating Wētā FX Limited's subscription rights in exchange for a perpetual license; and a decrease in professional services revenue, and consumption services revenue, both caused by the portfolio reset.
Sales and Marketing Our sales and marketing expenses consist primarily of personnel-related costs, advertising and marketing programs, including user acquisition costs and digital account-based marketing, user events such as developer-centric conferences and our annual Unite user conferences, and amortization expenses related to intangible assets.
Sales and Marketing Our sales and marketing expenses consist primarily of personnel-related costs, amortization expenses related to intangible assets, and advertising and marketing programs, including user acquisition costs and digital account-based marketing, user events such as developer-centric conferences and our annual Unite user conferences.
Some of these limitations are: • it is not a substitute for net cash (used in) provided by operating activities; • other companies may calculate free cash flow or similarly titled non-GAAP measures differently or may use other measures to evaluate their performance, all of which could reduce the usefulness of free cash flow as a tool for comparison; and • the utility of free cash flow is further limited as it does not reflect our future contractual commitments and does not represent the total increase or decrease in our cash balance for any given period.
Some of these limitations are: • it is not a substitute for net cash provided by operating activities ; • other companies may calculate free cash flow or similarly titled non-GAAP measures differently or may use other measures to evaluate their performance, all of which could reduce the usefulness of free cash flow as a tool for comparison; and • the utility of free cash flow is further limited as it does not reflect our future contractual commitments and does not represent the total increase or decrease in our cash balance for any given period.
Our subscriptions provide customers access to technologies that allow them to edit, run, and iterate interactive, RT3D and 2D experiences that can be created once and deployed to a variety of platforms. Enhanced support services are provided to our enterprise customers and are sold separately from the Create Solutions subscriptions.
Our subscriptions provide customers access to technologies that allow them to edit, run, and iterate interactive, RT3D and 2D experiences that can be created once and deployed to a variety of platforms. Enhanced support services are provided to our enterprise customers and are generally sold separately from the Create Solutions subscriptions.
Our cash flows fluctuate from period to period due to revenue seasonality, timing of billings, collections, and publisher payments. Historical cash flows are not necessarily indicative of our results in any future period.
Our cash flows can fluctuate from period to period due to revenue seasonality, timing of billings, collections, and publisher payments, and historical cash flows are not necessarily indicative of our results in any future period.
Some of these limitations are: • they exclude expense associated with our equity compensation plans, although equity compensation has been, and will continue to be, an important part of our compensation strategy; • adjusted gross profit and adjusted EBITDA excludes the expense of amortization of acquired intangible assets and depreciation of property and equipment, and although these are non-cash expenses, the assets being amortized may have to be replaced in the future and adjusted gross profit and adjusted EBITDA does not reflect cash expenditure for such replacements; • adjusted EBITDA excludes costs incurred from our acquisitions, and in connection with the formation of Unity China; • adjusted gross profit and adjusted EBITDA excludes costs incurred from restructuring activities; • adjusted EBITDA excludes costs incurred from legal settlements that we anticipate recovering through insurance, and subsequent recoveries of those amounts; • the expenses and other items that we exclude in our calculation of adjusted gross profit and adjusted EBITDA may differ from the expenses and other items, if any, that other companies may exclude from this measure or similarly titled measures, which reduces their usefulness as comparative measures.
Some of these limitations are: • they exclude expense associated with our equity compensation plans, although equity compensation has been, and will continue to be, an important part of our compensation strategy; • adjusted gross profit and adjusted EBITDA excludes the expense of amortization of acquired intangible assets and depreciation of property and equipment, and although these are non-cash expenses, the assets being amortized may have to be replaced in the future and adjusted gross profit and adjusted EBITDA does not reflect cash expenditure for such replacements; • adjusted EBITDA excludes costs incurred from our acquisitions; • adjusted gross profit and adjusted EBITDA excludes costs incurred from restructuring activities; • adjusted EBITDA excludes costs incurred from legal settlements that we anticipate recovering through insurance, and subsequent recoveries of those amounts; • the expenses and other items that we exclude in our calculation of adjusted gross profit and adjusted EBITDA may differ from the expenses and other items, if any, that other companies may exclude from this measure or similarly titled measures, which reduces their usefulness as comparative measures.
Our material cash requirements from known contractual and other obligations consists of our convertible notes, obligations under operating leases for office space, and contractual obligations for hosting services to support our business operations. See Item 8 of Part II, "Financial Statements and Supplementary Data — Note 10 — Commitments and Contingencies" for additional discussion of our principal contractual commitments.
Our material cash requirements from known contractual and other obligations consist of our convertible notes, obligations under operating leases for office space, and contractual obligations for hosting services to support our business operations. See Item 8 of Part II, "Financial Statements and Supplementary Data — Note 10 — Commitments and Contingencies" for additional discussion of our principal contractual commitments.
We consider the embedded cloud functionality to be a separate performance obligation, however, its pattern of performance aligns with the software and software updates, which enables us to treat the subscription agreements as one performance obligation that is recognized ratably over the term of the agreement. 52 Table of Contents Unity Software Inc.
We consider the embedded cloud functionality to be a separate performance obligation, however, its pattern of performance aligns with the software and software updates, which enables us to treat the subscription agreements as one performance obligation that is recognized ratably over the term of the agreement. 51 Table of Contents Unity Software Inc.
If we are unable to raise additional capital when required, or if we cannot expand our operations or otherwise capitalize on our business opportunities because we lack sufficient capital, our business, results of operations, and financial condition would be adversely affected. 51 Table of Contents Unity Software Inc.
If we are unable to raise additional capital when required, or if we cannot expand our operations or otherwise capitalize on our business opportunities because we lack sufficient capital, our business, results of operations, and financial condition would be adversely affected. 50 Table of Contents Unity Software Inc.
Customers Contributing More Than $100,000 of Revenue We focus on the number of customers that generated more than $100,000 of revenue in the trailing 12 months, as this segment of our customer base represents the majority of our revenue. We define a customer as an individual or entity that generated revenue during the measurement period.
Customers Contributing More Than $100,000 of Revenue We focus on the number of customers that generated more than $100,000 of revenue in our Strategic Portfolio, in the trailing 12 months, as this segment of our customer base represents the majority of our revenue. We define a customer as an individual or entity that generated revenue during the measurement period.
Provision for Income Taxes Provision for income taxes consists primarily of income taxes in certain foreign jurisdictions where we conduct business. We have a valuation allowance against certain of our deferred tax assets, including NOL carryforwards and tax credits related primarily to research and development.
Provision for (benefit from) Income taxes Provision for (benefit from) income taxes consists primarily of income taxes in certain foreign jurisdictions where we conduct business. We have a valuation allowance against certain of our deferred tax assets, including NOL carryforwards and tax credits related primarily to research and development.
We expect our gross profit to increase in absolute dollars in the long term but decrease in the short term as we reset our product portfolio to focus on the Unity Engine and Monetization solutions. We expect our gross profit as a percentage of revenue, or gross margin, to fluctuate from period to period.
We expect our gross profit to increase in absolute dollars in the long term but decrease in the short term as we reset our product portfolio to focus on the Unity Engine and related consumption services, and Monetization solutions. We expect our gross profit as a percentage of revenue, or gross margin, to fluctuate from period to period.
Discussion of 2021 and year-over-year comparisons between fiscal 2022 and 2021 that are not included in this Form 10-K can be found under the heading "Management's Discussion and Analysis of Financial Condition and Results of Operation" in Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2022, that was filed with the SEC on February 27, 2023, and are incorporated by reference herein. 41 Table of Contents Unity Software Inc.
Discussion of 2022 and year-over-year comparisons between 40 Table of Contents Unity Software Inc. fiscal 2023 and 2022 that are not included in this Form 10-K can be found under the heading "Management's Discussion and Analysis of Financial Condition and Results of Operation" in Part II, Item 7 of our Annual Report on Form 10-K for the fiscal year ended December 31, 2023, that was filed with the SEC on February 29, 2024, and are incorporated by reference herein.
Cost of Revenue, Gross Profit, and Gross Margin Cost of revenue consists primarily of personnel costs (including salaries, benefits, and stock-based compensation) for employees and subcontractors associated with our product support and professional services organizations, the amortization of intangible assets, hosting expenses, and depreciation of related property and equipment.
Cost of Revenue, Gross Profit, and Gross Margin Cost of revenue consists primarily of personnel costs (including salaries, benefits, and stock-based compensation) for employees and subcontractors associated with our product support and professional services organizations, hosting expenses, the amortization of intangible assets, and costs of related facilities.
This section of this Form 10-K generally discusses 2023 and 2022 items and year-to-year comparisons between 2023 and 2022.
This section of this Form 10-K generally discusses 2024 and 2023 items and year-to-year comparisons between 2024 and 2023.
We define adjusted EBITDA as net income or loss excluding benefits or expenses associated with stock-based compensation, amortization of acquired intangible assets, depreciation, acquisitions, restructurings and reorganizations, insurance reimbursement for legal expenses, interest, income tax, and other non-operating activities, which primarily consist of foreign exchange rate gains or losses.
We define adjusted EBITDA as net income or loss excluding benefits or expenses associated with stock- 47 Table of Contents Unity Software Inc. based compensation, amortization of acquired intangible assets, depreciation, acquisitions, restructurings and reorganizations, insurance reimbursement for legal expenses, interest, income tax, and other non-operating activities, which primarily consist of foreign exchange rate gains or losses.
Alternatively, we present revenue on a net basis for sales where we are facilitating the transaction between advertisers and publishers and do not have control over in-app placement.
We present revenue on a net basis for sales where we are facilitating the transaction between advertisers and publishers and do not have control over in-app placement. Alternatively, we present revenue on a gross basis for advertising sales where we are the publisher and have control of the in-app placement.
To the extent that the final tax outcome of these matters is different from the amounts recorded, such differences will affect the provision for income taxes in the period in 53 Table of Contents Unity Software Inc. which such determination is made and could have a material impact on our financial condition and operating results.
To the extent that the final tax outcome of these matters is different from the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made and could have a material impact on our financial condition and operating results.
We also incurred restructuring and reorganization expenses of approximately $70 million for the year ended December 31, 2023, of which $52 million related to reductions in our workforce, largely within research and development expense, and $18 million related to 46 Table of Contents Unity Software Inc. our intent to exit certain leased facilities, primarily impairment charges on operating lease assets in general and administrative expense.
We incurred restructuring and reorganization expenses of approximately $70 million for the year ended December 31, 2023, of which $52 million related to reductions in our workforce, largely within research and development expense, and $18 million related to our intent to exit certain leased facilities, primarily impairment charges on operating lease assets in general and administrative expense.
Adjusted Gross Profit and Adjusted EBITDA We define adjusted gross profit as GAAP gross profit excluding expenses associated with stock-based compensation, amortization of acquired intangible assets, depreciation, and restructurings and reorganizations.
Adjusted Gross Profit and Adjusted EBITDA We define adjusted gross profit as GAAP gross profit excluding expenses associated with stock-based compensation, amortization of acquired intangible assets, depreciation, and restructurings and reorganizations. We define adjusted gross margin as adjusted gross profit as a percentage of revenue.
We believe that adjusted gross profit and adjusted EBITDA provide our management and investors consistency and comparability with our past financial performance and facilitates period-to-period comparisons of operations, as these metrics exclude expenses that we do not consider to be indicative of our overall operating performance. 48 Table of Contents Unity Software Inc.
We believe that adjusted gross profit and adjusted EBITDA provide our management and investors consistency and comparability with our past financial performance and facilitates period-to-period comparisons of operations, as these metrics exclude expenses that we do not consider to be indicative of our overall operating performance.
The following table sets forth the components of our consolidated statements of operations data as a percentage of revenue for the periods indicated: Year Ended December 31, 2023 2022 2021 Revenue 100 % 100 % 100 % Cost of revenue 34 32 23 Gross profit 66 68 77 Operating expenses Research and development 48 69 63 Sales and marketing 38 36 31 General and administrative 18 27 31 Total operating expenses 104 132 125 Loss from operations (38) (63) (48) Interest expense (1) (1) — Interest income and other expense, net 2 1 — Loss before income taxes (37) (63) (48) Provision for Income taxes 1 3 — Net loss (38) % (66) % (48) % Revenue Create Solutions We generate Create Solutions revenue primarily through our suite of Create Solutions subscriptions inclusive of enterprise support, professional services, and cloud and hosting services.
The following table sets forth the components of our consolidated statements of operations data as a percentage of revenue for the periods indicated: Year Ended December 31, 2024 2023 2022 Revenue 100 % 100 % 100 % Cost of revenue 27 34 32 Gross profit 73 66 68 Operating expenses Research and development 51 48 69 Sales and marketing 41 38 36 General and administrative 23 18 27 Total operating expenses 115 104 132 Loss from operations (42) (38) (63) Interest expense (1) (1) (1) Interest income and other income (expense), net 6 2 1 Loss before income taxes (37) (37) (63) Provision for (benefit from) Income taxes — 1 3 Net loss (37) % (38) % (66) % Revenue Create Solutions We generate Create Solutions revenue primarily through our suite of Create Solutions subscriptions inclusive of enterprise support, professional services, and consumption services.
Operating Expenses Our operating expenses consist of research and development, sales and marketing, and general and administrative expenses. The most significant component of our operating expenses is personnel-related costs, including salaries and wages, sales commissions, bonuses, benefits, stock-based compensation, and payroll taxes.
Operating Expenses Our operating expenses consist of research and development, sales and marketing, and general and administrative expenses. The most significant component of our operating expenses is personnel-related costs, including salaries and wages, sales commissions, bonuses, benefits, stock-based compensation, and payroll taxes. 45 Table of Contents Unity Software Inc.
Liquidity and Capital Resources As of December 31, 2023, our principal sources of liquidity were cash and cash equivalents totaling $1.6 billion, which were primarily held for working capital purposes. Our cash equivalents are invested primarily in government money market funds.
Liquidity and Capital Resources As of December 31, 2024, our principal sources of liquidity were cash and cash equivalents totaling $1.5 billion, which were primarily held for working capital purposes. Our cash equivalents are invested primarily in government money market funds and time deposits.
A single organization with multiple divisions, segments, or subsidiaries is generally counted as a single customer, 42 Table of Contents Unity Software Inc. even though we may enter into commercial agreements with multiple parties within that organization. We had 1304, 1340, and 1052 such customers in the trailing 12 months as of December 31, 2023, 2022, and 2021, respectively.
A single organization with multiple divisions, segments, or subsidiaries is generally counted as a single customer, even though we may enter into commercial agreements with multiple parties within that organization. We had 1,254, 1,222, and 1,202 such customers in the trailing 12 months 41 Table of Contents Unity Software Inc. as of December 31, 2024, 2023, and 2022, respectively.
In connection with the ironSource Merger in November 2022, we issued $1.0 billion in aggregate principal amount of 2.0% convertible senior notes due 2027, the proceeds of which were used to fund repurchases under our share repurchase program. We previously issued $1.7 billion in aggregate principal amount of 0% convertible senior notes due 2026 in November 2021.
In connection with the ironSource Merger in November 2022, we issued $1.0 billion in aggregate principal amount of the 2027 Notes, the proceeds of which were used to fund repurchases under our share repurchase program.
Cash Used in Financing Activities During the year ended December 31, 2023, net cash used in financing activities consisted of repurchases and retirement of common stock, offset by the proceeds from the issuance of common stock under our employee equity plans.
Cash Used in Financing Activities During the year ended December 31, 2024, net cash used in financing activities consisted of repayments of convertible notes, offset by the proceeds from the issuance of common stock under our employee equity plans.
We track our performance by measuring our dollar-based net expansion rate, which compares our Create and Grow Solutions revenue, excluding Strategic Partnerships and, starting in the first quarter of 2023, Supersonic, from the same set of customers across comparable periods, calculated on a trailing 12-month basis.
We track our performance by measuring our dollar-based net expansion rate, which compares our Create and Grow Solutions revenue, excluding Strategic Partnerships and Supersonic, from the same set of customers across comparable periods, calculated on a trailing 12-month basis. Our dollar-based net expansion rate as of a period end is calculated as current period revenue divided by prior period revenue.
While these customers represented the substantial majority of revenue for the years ended December 31, 2023, 2022, and 2021, respectively, no one customer accounted for more than 10% of our revenue for any of those years.
The year over year increase was largely a result of our subscriptions growth. While these customers represented the substantial majority of revenue for the years ended December 31, 2024, 2023, and 2022, respectively, no one customer accounted for more than 10% of our revenue for any of those years.
Through these publishing services, we generate revenue from in-app advertising in published games and in some cases, in app purchase revenue. 45 Table of Contents Unity Software Inc.
Through these publishing services, we generate revenue from in-app advertising in published games and in some cases, in-app purchase revenue.
The following table presents a reconciliation of free cash flow to net cash provided by (used in) operating activities, the most directly comparable measure as determined in accordance with GAAP, for the periods presented (in thousands): Year Ended December 31, 2023 2022 Net cash provided by (used in) operating activities $ 234,700 $ (59,431) Less: Purchases of property and equipment (55,921) (57,138) Free cash flow $ 178,779 $ (116,569) Net cash provided by investing activities $ 44,040 $ 723,228 Net cash used in financing activities $ (174,015) $ (226,634) 50 Table of Contents Unity Software Inc.
The following table presents a reconciliation of free cash flow to net cash provided by operating activities, the most directly comparable measure as determined in accordance with GAAP, for the periods presented (in thousands): Year Ended December 31, 2024 2023 Net cash provided by operating activities $ 315,553 $ 234,700 Less: Purchases of property and equipment (29,549) (55,921) Free cash flow $ 286,004 $ 178,779 Net cash provided by (used in) investing activities $ (42,409) $ 44,040 Net cash used in financing activities $ (338,307) $ (174,015) 49 Table of Contents Unity Software Inc.
The following table presents a reconciliation of our adjusted gross profit to our GAAP gross profit, the most directly comparable measure as determined in accordance with GAAP, for the periods presented (in thousands): Year Ended December 31, 2023 2022 GAAP gross profit $ 1,453,595 $ 948,524 Add: Stock-based compensation expense 80,213 57,271 Amortization of intangible assets expense 243,690 46,942 Depreciation expense 10,480 6,397 Restructuring and reorganization costs 13,510 576 Adjusted gross profit $ 1,801,488 $ 1,059,710 GAAP gross margin 66 % 68 % Adjusted gross margin 82 % 76 % 49 Table of Contents Unity Software Inc.
The following table presents a reconciliation of our adjusted gross profit to our GAAP gross profit, the most directly comparable measure as determined in accordance with GAAP, for the periods presented (in thousands): Year Ended December 31, 2024 2023 GAAP gross profit $ 1,332,402 $ 1,453,595 Add: Stock-based compensation expense 43,566 80,213 Amortization of intangible assets expense 108,580 243,690 Depreciation expense 9,613 10,480 Restructuring and reorganization costs 15,154 13,510 Adjusted gross profit $ 1,509,315 $ 1,801,488 GAAP gross margin 73 % 66 % Adjusted gross margin 83 % 82 % 48 Table of Contents Unity Software Inc.
Grow Solutions revenue includes approximately $72 million related to the return of customer incentives issued by ironSource prior to the merger and we do not expect to receive any material amounts in future periods. Grow Solutions revenue was also negatively impacted by increased competition, which we expect will continue in 2024.
The decrease in Grow Solutions revenue was further driven by the return of customer incentives, issued by ironSource prior to the merger, for which we received approximately $72 million of revenue in 2023, and no material amounts in 2024. We do not expect to receive any material amounts related to these customer incentives in any future periods.
The following table presents a reconciliation of our adjusted EBITDA to net loss, the most directly comparable measure as determined in accordance with GAAP, for the periods presented (in thousands): Year Ended December 31, 2023 2022 GAAP net loss $ (826,322) $ (919,488) Stock-based compensation expense 648,696 537,818 Amortization of intangible assets expense 515,489 172,551 Depreciation expense 48,427 39,025 Acquisition-related costs 888 41,465 Restructuring and reorganization costs 70,373 17,146 Insurance reimbursement for legal settlement (3,250) 3,250 Interest expense 24,580 7,404 Interest income and other expense, net (59,529) (7,192) Income tax expense 28,477 37,063 Adjusted EBITDA $ 447,829 $ (70,958) Free Cash Flow We define free cash flow as net cash provided by (used in) operating activities less cash used for purchases of property and equipment.
The following table presents a reconciliation of our adjusted EBITDA to net loss, the most directly comparable measure as determined in accordance with GAAP, for the periods presented (in thousands): Year Ended December 31, 2024 2023 GAAP net loss $ (664,287) $ (826,322) Stock-based compensation expense 469,128 648,696 Amortization of intangible assets expense 353,371 515,489 Depreciation expense 55,609 48,427 Acquisition-related costs — 888 Restructuring and reorganization costs 266,855 70,373 Insurance reimbursement for legal settlement — (3,250) Interest expense 23,542 24,580 Interest income and other income (expense), net (111,558) (59,529) Provision for (benefit from) income taxes (2,846) 28,477 Adjusted EBITDA $ 389,814 $ 447,829 Free Cash Flow We define free cash flow as net cash provided by operating activities less cash used for purchases of property and equipment.
Results of Operations The following table summarizes our consolidated statements of operations data for the periods indicated (in thousands): Year Ended December 31, 2023 2022 2021 Revenue $ 2,187,317 $ 1,391,024 $ 1,110,526 Cost of revenue 733,722 442,500 253,630 Gross profit 1,453,595 948,524 856,896 Operating expenses Research and development 1,053,588 959,491 695,710 Sales and marketing 834,625 497,956 344,939 General and administrative 398,176 373,290 347,912 Total operating expenses 2,286,389 1,830,737 1,388,561 Loss from operations (832,794) (882,213) (531,665) Interest expense (24,580) (7,404) (1,131) Interest income and other expense, net 59,529 7,192 1,566 Loss before income taxes (797,845) (882,425) (531,230) Provision for Income taxes 28,477 37,063 1,377 Net loss $ (826,322) $ (919,488) $ (532,607) 44 Table of Contents Unity Software Inc.
Results of Operations The following table summarizes our consolidated statements of operations data for the periods indicated (in thousands): Year Ended December 31, 2024 2023 2022 Revenue $ 1,813,255 $ 2,187,317 $ 1,391,024 Cost of revenue 480,853 733,722 442,500 Gross profit 1,332,402 1,453,595 948,524 Operating expenses Research and development 924,830 1,053,588 959,491 Sales and marketing 752,649 834,625 497,956 General and administrative 410,072 398,176 373,290 Total operating expenses 2,087,551 2,286,389 1,830,737 Loss from operations (755,149) (832,794) (882,213) Interest expense (23,542) (24,580) (7,404) Interest income and other income (expense), net 111,558 59,529 7,192 Loss before income taxes (667,133) (797,845) (882,425) Provision for (benefit from) Income taxes (2,846) 28,477 37,063 Net loss $ (664,287) $ (826,322) $ (919,488) 43 Table of Contents Unity Software Inc.
Interest Expense Interest expense consists primarily of interest expense associated with our convertible debt and amortization of debt issuance costs. Interest expense for the year ended December 31, 2023 increased, compared to the comparable prior year period, due to accrued interest on our 2027 Notes and amortization of debt issuance costs.
Interest Expense Interest expense consists primarily of interest expense associated with our convertible debt and amortization of debt issuance costs. Interest expense for the year ended December 31, 2024 decreased, compared to the comparable prior year period, in line with our outstanding debt obligations.
Cost of revenue for the year ended December 31, 2023 increased, compared to the comparable prior year period, primarily due to an increase of approximately $197 million in amortization expenses related to intangible assets acquired through our business combinations, including $105 million of incremental expense in the fourth quarter of 2023 due to fully amortizing an intangible assets related to the Wētā FX Limited contract that was terminated, as well as higher personnel-related expenses.
Cost of revenue for the year ended December 31, 2024 decreased, compared to the comparable prior year period, primarily due to a decrease in amortization expenses related to intangible assets acquired through our business combinations, which includes $105 million of incremental expenses in the fourth quarter of 2023 from fully amortizing intangible assets related to the Wētā FX Limited contract that was terminated, a decrease in personnel costs, driven by our reductions in headcount, and a decrease in our hosting expenses in line with decreases in related revenue.
Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases.
We use the asset and liability method under Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 740, Income Taxes, when accounting for income taxes. Deferred tax assets and liabilities are recognized for the estimated future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases.
We expect research and development expenses to fluctuate as a percentage of revenue from period to period. Research and development expense for the year ended December 31, 2023 increased, compared to the comparable prior year period, primarily due to higher personnel-related, and hosting expenses resulting from the ironSource Merger.
We expect research and development expenses to fluctuate as a percentage of revenue from period to period. Research and development expense for the year ended December 31, 2024 decreased, compared to the comparable prior year period, primarily due to a decrease in personnel costs driven by our reductions in headcount in the first quarter of 2024.
When observable pricing is not available, we use cost plus margin analysis to determine SSP. For advertisements placed through our Grow Solutions networks, we evaluate whether we are the principal, where revenue would be reported on a gross basis, or the agent, where revenue would be reported on a net basis.
For advertisements placed through our Grow Solutions networks, we evaluate whether we are the principal, where revenue would be reported on a gross basis, or the agent, where revenue would be reported on a net basis. This evaluation of whether to present revenue on a gross or net basis requires significant judgment.
We experienced a high volume of negative customer feedback including a boycott and a slowdown of signing new contracts and renewals as a result of these changes, which we believe negatively impacted our Grow Solutions revenue in the second half of 2023.
In the third quarter of 2023, we announced changes to our pricing model for our Create Solutions. We experienced a high volume of negative customer feedback including a boycott and a slow down of signing new contracts and renewals as a result of these changes.
Research and Development Research and development expenses primarily consist of personnel-related costs for the design and development of our platform, IT hosting and SaaS expenses, and amortization expenses related to intangible assets.
In addition, we incurred approximately $53 million of non-employee charges associated with this restructuring in 2024, largely within research and development expense. Research and Development Research and development expenses primarily consist of personnel-related costs for the design and development of our platform, IT hosting and SaaS expenses, and amortization expenses related to intangible assets.
While we expect a potential benefit from this change over the long term for our business, the ultimate impact on our business remains uncertain.
While the initial customer response to this announcement has been positive and we expect this change to benefit our business over the long term, the ultimate impact remains uncertain.
Significant judgment is required in determining the provision for income taxes and income tax assets and liabilities, including evaluating uncertainties in the application of accounting principles and complex tax laws. We use the asset and liability method under Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 740, Income Taxes, when accounting for income taxes.
Income Taxes We are subject to income taxes in the United States and numerous foreign jurisdictions. Significant judgment is required in determining the provision for income taxes and income tax assets and liabilities, including evaluating uncertainties in the application of accounting principles and complex tax laws.
Our changes in cash flows were as follows (in thousands): Year Ended December 31, 2023 2022 2021 Net cash provided by (used in) operating activities $ 234,700 $ (59,431) $ (111,449) Net cash provided by (used in) investing activities 44,040 723,228 (1,837,360) Net cash provided by (used in) financing activities (174,015) (226,634) 1,721,002 Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash (6,146) 1,926 459 Net change in cash, cash equivalents, and restricted cash $ 98,579 $ 439,089 $ (227,348) Cash Provided by Operating Activities During the year ended December 31, 2023, net cash provided by operating activities was primarily due to the acquisition and inclusion of operating cash flows from ironSource, and an increase in working capital as our business grows.
Our changes in cash flows were as follows (in thousands): Year Ended December 31, 2024 2023 2022 Net cash provided by (used in) operating activities $ 315,553 $ 234,700 $ (59,431) Net cash provided by (used in) investing activities (42,409) 44,040 723,228 Net cash used in financing activities (338,307) (174,015) (226,634) Effect of foreign exchange rate changes on cash, cash equivalents, and restricted cash (11,223) (6,146) 1,926 Net change in cash, cash equivalents, and restricted cash $ (76,386) $ 98,579 $ 439,089 Cash Provided by Operating Activities During the year ended December 31, 2024, net cash provided by operating activities was primarily due to a decrease in our net loss, adjusted for certain non-cash items, which include depreciation and amortization, stock-based compensation, gain on convertible notes, impairments, and other, offset by a decrease in operating assets and liabilities.
Sales and marketing expense for the year ended December 31, 2023 increased, compared to the comparable prior year period, primarily due to an increase in amortization expense related to intangible assets acquired through our business acquisitions of approximately $136 million, higher user acquisition costs and higher personnel-related expenses due to the ironSource Merger.
Sales and marketing expense for the year ended December 31, 2024 decreased, compared to the comparable prior year period, primarily due to a decrease in personnel costs, driven by our reductions in headcount in the first quarter of 2024, and a decrease in amortization expenses related to intangible assets.
See Note 9, "Borrowings," for additional discussion of the Notes. In July 2022, our board of directors approved our share repurchase program, which authorized the repurchase of up to $2.5 billion of shares of our common stock in open market transactions through November 2024 (the "Share Repurchase Program").
In July 2022, our board of directors approved our share repurchase program, which authorized the repurchase of up to $2.5 billion of shares of our common stock in open market transactions, which expired in November 2024. Since our inception, we have generated losses from our operations as reflected in our accumulated deficit of $3.7 billion as of December 31, 2024.
As of December 31, 2023 2022 2021 Dollar-based net expansion rate 104 % 116 % 140 % Our dollar-based net expansion rate as of December 31, 2023, 2022, and 2021 was driven primarily by the sales of additional subscriptions and services to our existing Create Solutions customers and cross-selling our solutions to all of our customers.
Our dollar-based net expansion rate as of December 31, 2022, was driven primarily by increases in Grow Solutions revenue, due in part to the ironSource merger, and growth in subscriptions revenue, and professional services revenue, within Create Solutions.
Cash Provided by Investing Activities During the year ended December 31, 2023, net cash provided by investing activities consisted primarily of proceeds received from the maturities of short-term investments, which was partially offset by purchases of property and equipment.
Cash Used in Investing Activities During the year ended December 31, 2024, net cash used in investing activities consisted primarily of purchases of property and equipment, and purchases of intangible assets.
The chart below illustrates that our dollar-based net expansion rate has been declining over the last year with a slight rebound in the fourth quarter of 2022 due to the ironSource Merger. 43 Table of Contents Unity Software Inc.
The decrease in dollar-based net expansion rate, compared to the comparable prior year periods, is attributable to declines in Grow Solutions, and professional services revenue, as noted above. 42 Table of Contents Unity Software Inc. The chart below illustrates that our dollar-based net expansion rate has been declining over the last year.
Our platform consists of two complementary sets of solutions: Create Solutions and Grow Solutions, which together comprise our strategic portfolio surrounding the Unity Engine, Cloud and Monetization.
Overview Unity offers a suite of tools to create, market and grow games and interactive experiences across all major platforms from mobile, PC, and console, to extended reality (XR). Our platform consists of two complementary sets of solutions: Create Solutions and Grow Solutions, which together comprise our Strategic Portfolio surrounding the Unity Engine and related consumption services, and Monetization.
Interest income and other expense, net, for the year ended December 31, 2023 increased, compared to the comparable prior year period, primarily due to rising interest rates increasing the interest and dividend income earned on our money market investments and time deposit accounts.
Interest income and other income (expense), net, for the year ended December 31, 2024 increased, compared to the comparable prior year period, primarily due to gains on the repurchase of convertible debt of $61.4 million in the first quarter of 2024.
Interest Income and Other Expense, Net Interest income and other expense, net, consists primarily of interest income earned on our cash, cash equivalents, and short-term investments, foreign currency gains and losses. As we have expanded our global operations, our exposure to fluctuations in foreign currencies has increased, and we expect this to continue. 47 Table of Contents Unity Software Inc.
Interest Income and Other Income (Expense), Net Interest income and other income (expense), net, consists primarily of gains on the repurchase of convertible debt, interest income earned on our cash, cash equivalents, and short-term investments, and foreign currency gains and losses.
General and administrative expense for the year ended December 31, 2023 increased, compared to the comparable prior year period, primarily due to higher personnel-related expenses associated with the ironSource Merger, and to a lesser extent lease related expenses, partially offset by a decrease in professional fees.
General and administrative expense for the year ended December 31, 2024 increased, compared to the comparable prior year period, primarily due to higher personnel-related costs, driven by employee separation costs in the first quarter of 2024. 46 Table of Contents Unity Software Inc.
In the first quarter of 2024, we expect to recognize approximately $195 million in employee separation costs, primarily related to the acceleration and modifications of equity awards. These costs associated with lease terminations and employee separations encompass the substantive cost components of our restructuring efforts.
This resulted in approximately $214 million in employee separation costs, primarily related to the acceleration and modifications of equity awards, and $53 million of non-employee charges associated with these reductions. We are continuing to evaluate our facility needs, and expect more changes in 2025.