Biggest changeYear Ended December 31, $ % 2022 2021 Change Change Statement of Operations Data: (dollars in thousands) Revenue $ 618,968 $ 992,584 $ (373,616 ) (38)% Cost of revenue 252,067 215,533 36,534 17% Gross profit 366,901 777,051 (410,150 ) (53)% Operating expenses: Research and development 28,910 24,219 4,691 19% Selling and marketing 38,918 24,439 14,479 59% General and administrative 111,074 50,732 60,342 119% Amortization of intangible assets 6,497 1,708 4,789 280% Restructuring costs 2,975 — 2,975 * Total operating expenses 188,374 101,098 87,276 86% Operating income 178,527 675,953 (497,426 ) (74)% Interest and other income, net 5,498 1,347 4,151 308% Income before income taxes and gain on equity-method investment 184,025 677,300 (493,275 ) (73)% Provision for income taxes 42,102 174,795 (132,693 ) (76)% Income before gain on equity-method investment 141,923 502,505 (360,582 ) (72)% Gain on equity-method investment — 3,734 (3,734 ) (100)% Net income from consolidated operations 141,923 506,239 (364,316 ) (72)% Net loss attributable to noncontrolling interests 1,480 1,125 355 32% Net income attributable to Fulgent $ 143,403 $ 507,364 $ (363,961 ) (72)% * Percentage not meaningful.
Biggest changeYear Ended December 31, $ % 2023 2022 Change Change Statement of Operations Data: (dollars in thousands) Revenue $ 289,213 $ 618,968 $ (329,755 ) (53)% Cost of revenue 184,757 252,067 (67,310 ) (27)% Gross profit 104,456 366,901 (262,445 ) (72)% Operating expenses: Research and development 41,440 28,910 12,530 43% Selling and marketing 41,467 38,918 2,549 7% General and administrative 88,999 111,074 (22,075 ) (20)% Amortization of intangible assets 7,845 6,497 1,348 21% Goodwill impairment loss 120,234 — 120,234 * Restructuring costs — 2,975 (2,975 ) * Total operating expenses 299,985 188,374 111,611 59% Operating (loss) income (195,529 ) 178,527 (374,056 ) (210)% Interest and other income, net 21,444 5,498 15,946 290% Income (loss) before income taxes (174,085 ) 184,025 (358,110 ) (195)% Provision for income taxes 1,154 42,102 (40,948 ) (97)% Net (loss) income from consolidated operations (175,239 ) 141,923 (317,162 ) (223)% Net loss attributable to noncontrolling interests 7,414 1,480 5,934 401% Net (loss) income attributable to Fulgent $ (167,825 ) $ 143,403 $ (311,228 ) (217)% Revenue Year Ended December 31, $ % 2023 2022 Change Change Revenue Data: (dollars in thousands) Precision diagnostics $ 131,990 $ 93,685 $ 38,305 41% Anatomic pathology 104,655 74,799 29,856 40% COVID-19 27,152 437,507 (410,355 ) (94)% BioPharma services 25,416 12,977 12,439 96% Total $ 289,213 $ 618,968 $ (329,755 ) (53)% Revenue decreased by $329.8 million, or 53%, from $619.0 million in 2022 to $289.2 million in 2023.
Forward-Looking Statements The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated financial statements and related notes included in this report and contains forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Securities Exchange Act.
Forward-Looking Statements The following discussion and analysis of our financial condition and results of operations should be read together with our consolidated financial statements and related notes included in this report and contains forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act.
Investing Activities Cash used in investing activities in 2022 was $261.3 million, which primarily related to $418.0 million in purchase of marketable securities, $172.7 million related to business acquisitions, $18.8 million related to the purchase of fixed assets consisting mainly of medical laboratory equipment and building improvement, $15.0 million related to the purchase of redeemable preferred stock and $10.0 million related to contingent consideration payouts related to business acquisitions, partially offset by $232.5 million related to maturities of marketable securities and $140.2 million related to proceeds from sales of marketable securities.
Cash used in investing activities in 2022 was $261.3 million, which primarily related to $418.0 million in the purchase of marketable securities, $172.7 million related to business acquisitions, $18.8 million related to the purchase of fixed assets consisting mainly of medical laboratory equipment and building improvement, $15.0 million related to the purchase of redeemable preferred stock and $10.0 million related to contingent consideration payouts related to business acquisitions, and partially offset by $232.5 million related to maturities of marketable securities and $140.2 million related to proceeds from sales of marketable securities.
Our primary uses of cash are to fund our operations and to fund strategic acquisitions as we continue to invest in and seek to grow our business. Cash used to fund operating expenses is impacted by the timing of our expense payments, as reflected in the changes in our outstanding accounts payable and accrued expenses.
Our primary uses of cash are to repurchase our stock, fund our operations, and to fund strategic acquisitions as we continue to invest in and seek to grow our business. Cash used to fund operating expenses is impacted by the timing of our expense payments, as reflected in the changes in our outstanding accounts payable and accrued expenses.
We expect that these factors could cause our consolidated effective tax rate to differ significantly from the U.S. federal income tax rate in future periods. 53 Results of Operations The table below summarizes the results of our continuing operations for each of the periods presented.
We expect that these factors could cause our consolidated effective tax rate to differ significantly from the U.S. federal income tax rate in future periods. 76 Results of Operations The table below summarizes the results of our continuing operations for each of the periods presented.
Restructuring Costs Restructuring expenses represent one-time employee termination benefits provided to employees that were involuntarily terminated in association with the acquisition of a new entity in 2022. Interest and Other Income, Net Interest and other income, net is primarily comprised of net interest income, which was $5.3 million and $1.3 million for 2022 and 2021, respectively.
Restructuring Costs Restructuring expenses represent one-time employee termination benefits provided to employees that were involuntarily terminated in association with the acquisition of a new entity in 2022. Interest and Other Income, Net Interest and other income, net is primarily comprised of net interest income, which was $21.1 million and $5.3 million for 2023 and 2022, respectively.
We have omitted discussion of 2020 results where it would be redundant to the discussion previously included in Item 7 of our 2021 Annual Report on Form 10-K.
We have omitted discussion of 2021 results where it would be redundant to the discussion previously included in Item 7 of our 2022 Annual Report on Form 10-K.
The composition and concentration of our customer base can fluctuate from period to period, and in certain prior periods, a small number of customers has accounted for a significant portion of our revenue.
The composition and concentration of our customer base can fluctuate from period to period, and in certain prior periods, a small number of customers have accounted for a significant portion of our revenue.
Amortization of Intangible Assets Amortization of intangible assets represents amortization expenses on the intangible assets that arose from the business combinations in 2022 and 2021 and a patent purchased in 2021. The increase in amortization of intangible assets was primarily due to additions in intangible assets from business combinations in 2022.
Amortization of Intangible Assets Our consolidated amortization of intangible assets represents amortization expenses on the intangible assets that arose from the business combinations in 2022 and 2021 and a patent purchased in 2021. The increase in amortization of intangible assets was primarily due to additions in intangible assets from business combinations in 2022.
For further information, refer to Note 9 to the Consolidated Financial Statements. (2) Represents non-cancelable finance leases. For further information, refer to Note 9 to the Consolidated Financial Statements. (3) Represents non-cancelable purchase obligations for medical lab equipment, reagents and other supplies, see Note 8 to the Consolidated Financial Statements.
For further information, refer to Note 9, Leases, to the Consolidated Financial Statements. (2) Represents non-cancelable finance leases. For further information, refer to Note 9, Leases , to the Consolidated Financial Statements. (3) Represents non-cancelable purchase obligations for medical lab equipment, reagents and other supplies, see Note 8, Debt, Commitment and Contingencies , to the Consolidated Financial Statements.
Our marketable securities primarily consist of equity securities and corporate bonds, municipal bonds, and U.S. government and U.S. agency debt securities, U.S. treasury bills, and Yankee debt securities as of December 31, 2022 and 2021.
Our marketable securities primarily consist of U.S. government and U.S. agency debt securities, U.S. treasury bills, corporate bonds, municipal bonds, and Yankee debt securities as of December 31, 2023 and 2022.
Ability to Obtain Reimbursement As part of our business plan for future growth, we intend to pursue coverage and reimbursement from third-party payors at a level adequate for us to achieve profitability.
As part of our business plan for future growth, we intend to pursue coverage and reimbursement from third-party payors at a level adequate for us to again achieve and maintain profitability.
This interest income related to interest earned on various investments in marketable securities including realized and holding gain (loss) on marketable equity securities, net of interest expenses incurred on our notes payable and a margin loan. 55 Provision for Income Taxes Provision for income taxes were $42.1 million and $174.8 million in 2022 and 2021, respectively.
This interest income related to interest earned on various investments in marketable securities including realized and holding gain (loss) on marketable equity securities, net of interest expenses incurred on our notes payable and a margin loan. Provision for Income Taxes Provision for income taxes were $1.2 million and $42.1 million in 2023 and 2022, respectively.
We currently classify our customers into three payor types: (i) Insurance, including claim reimbursement from HRSA for uninsured individuals, (ii) Institutional, including hospitals, medical institutions, other laboratories, governmental bodies, municipalities and large corporations or (iii) Patients who pay directly.
We currently classify our customers into three payor types: (i) Insurance, (ii) Institutional, including hospitals, medical institutions, other laboratories, governmental bodies, municipalities and large corporations or (iii) Patients who pay directly.
During all periods covered by this report, we consider the estimated effect on our revenue of foreign currency exchange rate fluctuations to be immaterial; however, the impact of foreign currency exchange rate fluctuations may increase in future periods as we pursue continued international expansion. Business Risks and Uncertainties Our business and prospects are exposed to numerous risks and uncertainties.
During all periods covered by this report, we consider the estimated effect on our revenue of foreign currency exchange rate fluctuations to be immaterial; however, the impact of foreign currency exchange rate fluctuations may increase in future periods as we pursue continued international expansion.
Net Loss Attributable to Noncontrolling Interest Net loss attributable to noncontrolling interest represents net loss attributable to minority shareholders from entities not wholly owned. 56 Liquidity and Capital Resources Liquidity and Sources of Cash We had $852.9 million and $935.5 million in cash, cash equivalents and marketable securities as of December 31, 2022 and 2021, respectively.
Net Loss Attributable to Noncontrolling Interest Net loss attributable to noncontrolling interest represents net loss attributable to minority shareholders from entities not wholly owned. 80 Liquidity and Capital Resources Liquidity and Sources of Cash We had $847.7 million and $852.9 million in cash, cash equivalents and marketable securities as of December 31, 2023 and 2022, respectively.
Our therapeutic development business is focused on developing drug candidates for treating a broad range of cancers using a novel nanoencapsulation and targeted therapy platform designed to improve the therapeutic window and pharmacokinetic profile, or PK profile, of new and existing cancer drugs. We aim to transform from a genomic diagnostic business into a fully integrated precision medicine company.
Our therapeutic development business is focused on developing drug candidates for treating a broad range of cancers using a novel nanoencapsulation and targeted therapy platform designed to improve the therapeutic window and pharmacokinetic profile, or PK profile, of new and existing cancer drugs.
The increase in revenue from non-U.S. sources between periods were primarily due to increased sales of our traditional genetic testing services to customers in China through FF Gene Biotech which contributed $9.2 million in total revenue in 2022.
The increase in revenue from non-U.S. sources between periods were primarily due to increased sales of our traditional genetic testing services to customers in China through our joint venture, which contributed $11.4 million in total revenue in 2023.
The stock repurchase program has no expiration from the date of authorization. Under the stock repurchase program, the Company may repurchase shares from time to time in the open market or in privately negotiated transactions.
Stock Repurchase Program In March 2022, our Board authorized a $250.0 million stock repurchase program. The stock repurchase program has no expiration from the date of authorization. Under the stock repurchase program, the Company may repurchase shares from time to time in the open market or in privately negotiated transactions.
Costs associated with performing tests are recorded as tests are processed. We expect cost of revenue to generally increase as and if we increase the number of tests we deliver. Operating Expenses Our operating expenses are classified into five categories: research and development; selling and marketing; general and administrative; amortization of intangible assets; and restructuring costs.
Costs associated with performing tests are recorded as tests are processed. 74 Operating Expenses Our operating expenses are classified into five categories: research and development; selling and marketing; general and administrative; amortization of intangible assets; and restructuring costs if any.
No additional costs are expected to be incurred under the plan of termination post 2022, and the payable balance is expected to be paid off by August 2023. Provision for Income Taxes Provision for income taxes consists of U.S. federal and state income taxes.
No additional costs were incurred under the plan of termination post 2022, and the payable balance has been paid off. Provision for Income Taxes Provision for income taxes consists of U.S. federal and state income taxes.
Material Cash Requirements and Contractual Obligations as of December 31, 2022 As of December 31, 2022, we have an outstanding balance of $15.0 million under our margin account, $5.2 million in notes payable to Xilong Scientific, which is due in March 2023, and $3.8 million of an installment loan, of which, the current portion is $461,000.
Material Cash Requirements and Contractual Obligations as of December 31, 2023 As of December 31, 2023, we have an outstanding balance of $775,000 in notes payable to Xilong Scientific, which is due in March 2024, and $3.4 million of an installment loan, of which, the current portion is $408,000.
We expense all selling and marketing costs as incurred. We expect our selling and marketing expenses will continue to increase in absolute dollars, primarily driven by our increased investment in sales and marketing in recent periods, including developing and expanding our sales team, creating and implementing new sales and marketing strategies and increasing the overall scope of our marketing efforts.
We expect our selling and marketing expenses will continue to increase in absolute dollars, primarily driven by our increased investment in sales and marketing in recent periods, including developing and expanding our sales team, creating and implementing new sales and marketing strategies and increasing the overall scope of our marketing efforts. 75 General and Administrative Expenses General and administrative expenses include executive, finance, accounting, legal and human resources functions.
Cost of Revenue Cost of revenue reflects the aggregate costs incurred in delivering test results, including “sequencing as a service,” and consists of: costs of laboratory supplies, including collection kits, personnel costs, including salaries, employee benefit costs, bonuses and equity-based compensation expenses; depreciation of laboratory equipment; amortization of leasehold improvements; and allocated overhead expenses, including rent and utilities.
Cost of Revenue Cost of revenue reflects the aggregate costs incurred in delivering test results and consists of: costs of laboratory reagents and supplies; personnel costs, including salaries, employee benefit costs, bonuses and equity-based compensation expenses; depreciation of laboratory equipment; delivery and courier costs relating to the transportation of specimens to be tested; amortization of leasehold improvements; and allocated overhead expenses, including rent and utilities.
Financing Activities Cash used in financing activities in 2022 was $77.1 million, which primarily related to $74.3 million used in the repurchase of common stock and $1.8 million used in common stock withholding for employee tax obligations.
Cash used in financing activities in 2022 was $77.1 million, which primarily related to $74.3 million used in the repurchase of common stock and $1.8 million used in common stock withholding for employee tax obligations. We did not expect to use any credit facilities due to the strong cash position as of December 31, 2023.
Cash Flows The following table summarizes cash flows from continuing operations for each of the periods presented: Year Ended December 31, 2022 2021 (in thousands) Net cash provided by operating activities $ 253,520 $ 538,577 Net cash used in investing activities $ (261,314 ) $ (546,548 ) Net cash (used in) provided by financing activities $ (77,141 ) $ 85,405 Operating Activities Cash provided by operating activities in 2022 was $253.5 million.
Cash Flows The following table summarizes cash flows from continuing operations for each of the periods presented: Year Ended December 31, 2023 2022 (in thousands) Net cash provided by operating activities $ 27,003 $ 253,520 Net cash provided by (used in) investing activities $ 38,898 $ (261,314 ) Net cash used in financing activities $ (47,785 ) $ (77,141 ) Operating Activities During the year ended December 31, 2023, our operations provided $27.0 million of cash as compared to $253.5 million in 2022.
During the year ended December 31 2022, we repurchased 1.8 million shares of our common stock at an aggregate cost of $74.3 million under the stock repurchase program. As of December 31, 2022, a total of approximately $175.7 million remained available for future repurchases of our common stock under our stock repurchase programs.
During the year ended December 31 2023, we repurchased 953,000 shares of our common stock at an aggregate cost of $25.1 million under the stock repurchase program. During the year ended December 31 2022, we repurchased 1.8 million shares of our common stock at an aggregate cost of $74.3 million under the stock repurchase program.
However, due to decreased demand of testing, we experienced decreasing revenues from our COVID-19 testing services and we do not expect substantial revenue from COVID-19 testing in 2023. 50 Mix of Tests Delivered We offer our tests at different price points, and we incur different amounts and types of costs, depending on the nature and level of complexity and customization of the test and the specific terms we have negotiated for the tests, which can vary from customer to customer.
Factors Affecting Our Performance Mix of Tests Delivered 72 We offer our tests at different price points, and we incur different amounts and types of costs, depending on the nature and level of complexity and customization of the test and the specific terms we have negotiated for the tests, which can vary from customer to customer.
As a result, the amount, timing, nature and success of these investments, as well as other influences on our cost of revenue from period to period, can impact our costs. 51 Moreover, changes in our other operating expenses, due to investments in these aspects of our business or other factors, are not taken into account but impact our overall results, which can limit the utility of cost as an overall cost measurement tool.
Moreover, changes in our other operating expenses, due to investments in these aspects of our business or other factors, are not taken into account but impact our overall results, which can limit the utility of cost as an overall cost measurement tool. 73 Ability to Obtain Reimbursement Much of our revenue depends on receiving reimbursement for our tests from third-party payors, including our Insurance and Institutional customers.
For more information, see “Item 1A. Risk Factors” in this report. Financial Overview Revenue We generate revenue from sales of our test and testing services. We recognize revenue upon delivery of a report to the ordering physician or other customer based on the established billing rate, less contractual and other adjustments, to arrive at the amount we expect to collect.
Financial Overview Revenue Our laboratory service segment generates revenue from molecular testing, including precision diagnostics and anatomic pathology, BioPharma services, and COVID-19 testing. We recognize revenue upon delivery of a report to the ordering physician or other customer based on the established billing rate, less contractual and other adjustments, to arrive at the amount we expect to collect.
We expect our research and development expenses will continue to increase in absolute dollars as we expect to continue to invest in research and development activities. 52 Selling and Marketing Expenses Selling and marketing expenses consist of personnel costs, customer service expenses, direct marketing expenses, educational and promotional expenses, market research and analysis and allocated overhead expenses, including rent and utilities.
Accordingly, we expect to incur significant research and development expenses in connection with our initiation of Phase 2 trials for FID-007. Selling and Marketing Expenses Selling and marketing expenses consist of personnel costs, customer service expenses, direct marketing expenses, educational and promotional expenses, market research and analysis and allocated overhead expenses, including rent and utilities.
The acquisition method of accounting for business combinations requires us to estimate the fair value of assets acquired, liabilities assumed, and any noncontrolling interest in an acquired business to properly allocate purchase price consideration between assets that are depreciated or amortized and goodwill.
The acquisition method of accounting for business combinations requires us to estimate the fair value of assets acquired, liabilities assumed, and any noncontrolling interest in an acquired business to properly allocate purchase price consideration between assets that are depreciated or amortized and goodwill. 83 We assess goodwill and indefinite-lived intangibles for impairment on an annual basis and between annual tests if an event occurs or circumstances change that would more likely than not reduce the fair value of a reporting unit below its carrying amount.
General and Administrative Expenses General and administrative expenses include executive, finance, accounting, legal and human resources functions. These expenses consist of personnel costs, audit and legal expenses, consulting costs and allocated overhead expenses, including rent and utilities. We expense all general and administrative costs as incurred.
These expenses consist of personnel costs, audit and legal expenses, consulting costs and allocated overhead expenses, including rent and utilities. We expense all general and administrative costs as incurred. We expect our general and administrative expenses will continue to increase in absolute dollars as we seek to continue to scale our operations.
Recent Accounting Pronouncements See Note 2, Summary of Significant Accounting Policies , to our consolidated financial statements included in this report for information about recent accounting pronouncements.
Consequently, the eventual realized value, if any, of these acquired IPR&D projects may vary from their estimated fair values. Recent Accounting Pronouncements See Note 2, Summary of Significant Accounting Policies , to our consolidated financial statements included in this report for information about recent accounting pronouncements.
Most of the recent growth in our testing volume has resulted from COVID-19 tests that we conduct for certain counties, states and municipalities. The expansion of our COVID-19 testing business resulted in a substantial change in our business.
COVID-19 Testing Services We experienced significant volume growth in 2020, 2021 and 2022 after the launch of our COVID-19 testing services in 2020. Most of this growth in our testing volume resulted from COVID-19 tests that we conducted for certain counties, states and municipalities during the pandemic.
Cash used in investing activities in 2021 was $546.5 million, which primarily related to $710.5 million in purchases of marketable securities, $61.9 million related to business acquisitions, $23.8 million related to the purchase of fixed assets consisting mainly of medical laboratory equipment and building improvement, and $20.0 million related to the purchase of redeemable preferred stock, partially offset by proceeds of $185.7 million related to sales of marketable securities and $83.8 million related to maturities of marketable securities.
Cash provided by investing activities in 2023 was $38.9 million, which primarily related to $508.6 million related to maturities of marketable securities, $44.1 million related to proceeds from sales of marketable securities, and $775,000 related to the sale of fixed assets, and partially offset by $491.9 million in purchase of marketable securities, $22.2 million related to the purchase of fixed assets consisting mainly of medical laboratory equipment and building improvement, $399,000 related to a business acquisition.
Due to our out-of-network status with the majority of insurance payors for COVID-19 tests, estimation of the transaction price represents variable consideration. Valuation of Goodwill and Intangible Assets The valuation of assets acquired in a business combination and asset impairment reviews require the use of significant estimates and assumptions.
Valuation of Goodwill and Indefinite-Lived Intangible Assets The valuation of assets acquired in a business combination and asset impairment reviews require the use of significant estimates and assumptions.
Our gross profit as a percentage of revenue, or gross margin, decreased from 78.3% to 59.3% due to changes in product mix. Research and Development Research and development expenses increased $4.7 million, or 19%, from $24.2 million in 2021 to $28.9 million in 2022.
Our consolidated cost of revenues as a percentage of revenue increased from 40.7% to 63.9%. Our gross profit decreased by $262.4 million, or 72%, from $366.9 million in 2022 to $104.5 million in 2023. Our gross profit as a percentage of revenue, or gross margin, decreased from 59.3% to 36.1%.
The increase was primarily due to increases of $45.1 million in personnel costs including equity-based compensation, $6.6 million in allocated overhead expenses including security expenses, and $3.8 million in shipping and handling expense primarily due to additions of Inform Diagnostics and CSI, and $13.0 million in depreciation expenses primarily due to additions in fixed assets for production, remaining useful lives of COVID-related equipment and addition of Inform Diagnostics, partially offset by decreases of $27.2 million in reagent and supply expenses, $5.0 million in external customer engagement platforms, and $2.3 million in consulting and outside labor expense related to the decreased tests delivered.
The decrease was primarily due to decreases of $32.1 million in consulting and outside labor costs for production, $25.9 million in reagent and supply expenses, $12.3 million in depreciation expenses, $5.3 million in shipping expenses, and $1.2 million in travel and meals expense and $2.9 million in facility expense, all related to decreased COVID-19 testing, and partially offset by an increase of $15.4 million in personnel costs, including equity-based compensation expense, due to an additional four months of costs in 2023 compared to 2022 as Inform Diagnostics was acquired at the end of April 2022.
The following summarizes our contractual obligations as of December 31, 2022: Payments Due by Period Total Less than 1 year 1-3 years 3-5 years More than 5 years (in thousands) Operating lease obligations (1) $ 15,879 $ 6,590 $ 6,190 $ 2,882 $ 217 Finance lease obligations (2) 2,932 986 1,580 366 — Purchase obligations (3) 10,089 7,544 2,545 — — Total contractual obligations $ 28,900 $ 15,120 $ 10,315 $ 3,248 $ 217 58 (1) Represents non-cancelable operating leases.
The following summarizes our contractual obligations as of December 31, 2023: Payments Due by Period Total Less than 1 year 1-3 years 3-5 years More than 5 years (in thousands) Operating lease obligations (1) $ 12,242 $ 4,309 $ 4,140 $ 2,243 $ 1,550 Finance lease obligations (2) 1,368 532 836 — — Purchase obligations (3) 51,934 29,669 22,265 — — Total contractual obligations $ 65,544 $ 34,510 $ 27,241 $ 2,243 $ 1,550 82 (1) Represents non-cancelable operating leases.
General and Administrative General and administrative expenses increased $60.3 million, or 119%, from $50.7 million in 2021 to $111.1 million in 2022.
General and Administrative Our consolidated general and administrative expenses decreased by $22.1 million, or 20%, from $111.1 million in 2022 to $89.0 million in 2023.
Overview We are a technology-based company with a well-established clinical diagnostic business and a therapeutic development business. Our clinical diagnostic business offers molecular diagnostic testing services, comprehensive genetic testing, and high-quality anatomic pathology laboratory services designed to provide physicians and patients with clinically actionable diagnostic information to improve the quality of patient care.
Overview We are a technology-based company with a well-established laboratory services business and a therapeutic development business. Our laboratory services business—to which we formerly referred as our clinical diagnostic business, includes technical laboratory services and professional interpretation of laboratory results by licensed physicians.
The increase was primarily due to increases of $7.1 million in personnel costs including equity-based compensation expense related to increased headcount, $3.6 million in software expense from Inform Diagnostics, $1.0 million in travel expenses, $967,000 in commission expenses from CSI, $704,000 in consulting and outside labor related to marketing projects in 2022 and $632,000 in allocated overhead expenses due to addition of Inform Diagnostics.
The increase was primarily due to increases of $2.2 million in software expense, $1.5 million in facilities expense, $742,000 in personnel costs, including equity-based compensation expense, and $456,000 in advertising and marketing expenses, mainly due to an additional four months of costs in 2023 compared to 2022 as Inform Diagnostics was acquired at the end of April 2022, and partially offset by a decrease of $2.6 million in consulting and outside labor costs related to decreased COVID-19 testing.
The increase was primarily due to increases of $23.7 million in increased provision for credit losses stemming from the cessation of funding for the HRSA program in March 2022, $14.0 million in personnel costs including equity-based compensation expense related to increased headcount, $6.2 million in acquisition-related costs, $4.9 million in legal and professional fees primarily related to general corporate matters, $3.2 million in allocated overhead expenses, $3.1 million in license and permit expense and $2.4 million in depreciation expense primarily from Inform Diagnostics, $2.2 million in insurance expense, and $1.5 million in accounting expenses related to financial statement and internal control audit and reviews, partially offset by a decrease of $790,000 in consulting and outside labor expense.
The decrease was primarily due to decreases of $33.5 million in provision for credit losses due to subsequent collections from customers who were previously reserved, $6.2 million in acquisition related to business combinations in 2022, $2.6 million in one-time license and permit expense incurred by Inform Diagnostics, partially offset by increases of $6.6 million in personnel costs including equity-based compensation expense, $6.1 million in facility expense, and $3.6 million in depreciation expense, due to an additional four months of costs in 2023 compared to 2022 as Inform Diagnostics was acquired at the end of April 2022, and $3.0 million in legal and professional fees due to legal liabilities accrued in connection with our voluntary disclosure process as described in Note 8, Debt, Commitments and Contingencies to the Consolidated Financial Statements, and $1.5 million in accounting expense as the entities acquired in 2022 and 2021 were scoped in for financial statement and internal control audit and reviews.
The effective income tax rate was 22.7% and 25.8% of income before income taxes for 2022 and 2021, respectively. The decrease in the effective tax rate for 2022 relative to 2021 was primarily attributable to international restructuring costs that were incurred in 2021 but not 2022.
The effective income tax rate was (0.69)% and 22.7% of income before income taxes for 2023 and 2022, respectively. The change in the effective tax rate for 2023 relative to 2022 was due to the establishment of a valuation allowance on the Company’s net deferred tax assets.
Aggregating customers that are under common control, one of our customers, County of Los Angeles, contributed 19% and 26% of our revenue in 2022 and 2021, respectively. 54 Cost of Revenue Cost of revenue increased $36.5 million, or 17%, from $215.5 million in 2021 to $252.1 million in 2022.
For the laboratory services segment, aggregating customers that are under common control, one customer comprised $35.7 million or 12% of our revenue in 2023, and a different customer comprised $115.6 million or 19% and $260.2 million or 26% of our revenue in 2022 and 2021, respectively.
These costs consist of personnel costs, laboratory supplies, consulting costs and allocated overhead expenses, including rent and utilities. We expense all research and development costs in the periods in which they are incurred.
We expense all research and development costs in the periods in which they are incurred. We expect our research and development expenses will continue to increase in absolute dollars, as we expect to continue to invest in research and development activities and continue to innovate and expand the application of our platform.
Cash provided by financing activities in 2021 was $85.4 million, which primarily related to $89.5 million proceeds from an equity distribution agreement, partially offset by $4.2 million in common stock withholding for employee tax obligations. Stock Repurchase Program In March 2022, our Board authorized a $250.0 million stock repurchase program.
Financing Activities Cash used in financing activities in 2023 was $47.8 million, which primarily related to $25.1 million used in the repurchase of common stock $15.0 million used in the repayment for the margin account, $4.3 million used in the repayment of notes payable, and $2.7 million used in common stock withholding for employee tax obligations.