Biggest changeInterest Income Interest income consists of interest earned on cash, cash equivalents and investments. 92 Table of Contents Results of Operations Comparisons of the Years Ended December 31, 2023 and 2022 The following table summarizes our results of operations for the periods presented: Year ended December 31, Change 2023 2022 Amount % (dollars in thousands) Revenue: Product $ 8,506 $ 8,557 $ (51 ) (1 )% Service 2,016 913 1,103 121 % Related party 4,660 5,215 (555 ) (11 )% Grant and other 1,479 808 671 83 % Total revenue 16,661 15,493 1,168 8 % Cost of revenue: Product 5,398 5,459 (61 ) (1 )% Service 685 495 190 38 % Related party 1,430 1,989 (559 ) (28 )% Grant and other 642 457 185 40 % Total cost of revenue 8,155 8,400 (245 ) (3 )% Gross profit 8,506 7,093 1,413 20 % Operating expenses: Research and development 53,019 45,797 7,222 16 % Selling, general and administrative 58,950 58,531 419 1 % Total operating expenses 111,969 104,328 7,641 7 % Loss from operations (103,463 ) (97,235 ) (6,228 ) 6 % Other income (expense): Interest income 17,764 4,602 13,162 286 % Other expense (578 ) (333 ) (245 ) 74 % Total other income 17,186 4,269 12,917 303 % Net loss $ (86,277 ) $ (92,966 ) $ 6,689 (7 )% Revenue Year ended December 31, Change 2023 2022 Amount % (dollars in thousands) Revenue $ 16,661 $ 15,493 $ 1,168 8 % Revenue increased by $1.2 million, or 8%, from $15.5 million in 2022 to $16.7 million in 2023, primarily due to an increase in service revenue.
Biggest changeWe maintain a full valuation allowance on our domestic deferred tax assets as we have concluded that it is more likely than not that the deferred assets will not be realized. 96 Table of Contents Results of Operations Comparisons of the Years Ended December 31, 2024 and 2023 The following table summarizes our results of operations for the periods presented: Year ended December 31, Change 2024 2023 Amount % (dollars in thousands) Revenue: Product $ 8,695 $ 8,506 $ 189 2 % Service 2,960 2,016 944 47 % Related party 2,292 4,660 (2,368 ) (51 )% Grant and other 223 1,479 (1,256 ) (85 )% Total revenue 14,170 16,661 (2,491 ) (15 )% Cost of revenue: Product 4,402 5,398 (996 ) (18 )% Service 1,465 685 780 114 % Related party 712 1,430 (718 ) (50 )% Grant and other 536 642 (106 ) (17 )% Total cost of revenue 7,115 8,155 (1,040 ) (13 )% Gross profit 7,055 8,506 (1,451 ) (17 )% Operating expenses: Research and development 50,585 53,019 (2,434 ) (5 )% Selling, general and administrative 56,571 58,950 (2,379 ) (4 )% Total operating expenses 107,156 111,969 (4,813 ) (4 )% Loss from operations (100,101 ) (103,463 ) 3,362 (3 )% Other income (expense): Interest income 16,666 17,764 (1,098 ) (6 )% Loss on equity method investment (2,649 ) — (2,649 ) 100 % Other expense (417 ) (578 ) 161 (28 )% Total other income 13,600 17,186 (3,586 ) (21 )% Loss before provision for income taxes (86,501 ) (86,277 ) (224 ) 0 % Provision for income taxes 98 — 98 100 % Net loss $ (86,599 ) $ (86,277 ) $ (322 ) 0 % Revenue Year ended December 31, Change 2024 2023 Amount % (dollars in thousands) Revenue $ 14,170 $ 16,661 $ (2,491 ) (15 )% Revenue in fiscal year 2024 decreased by $2.5 million, or 15% as compared to the prior year.
Investing Activities In 2023, cash provided by investing activities was $37.9 million, which related to the proceeds from maturities of available-for-sale securities of $445.3 million and proceeds from sale of available-for-sale securities of $3.0 million. This was offset by the purchases of available-for-sale securities of $403.1 million and purchases of property and equipment, primarily for laboratory equipment, of $7.3 million.
In 2023, cash provided by investing activities was $37.9 million, which related to the proceeds from maturities of available-for-sale securities of $445.3 million and proceeds from sale of available-for-sale securities of $3.0 million. This was offset by the purchases of available-for-sale securities of $403.1 million and purchases of property and equipment, primarily for laboratory equipment, of $7.3 million.
We estimate the fair value of stock options with service conditions and stock purchase rights under our ESPP on the grant date using the Black-Scholes option-pricing valuation model. We use the straight-line method to allocate compensation cost to reporting periods over the requisite service period in which the awards are expected to vest.
We estimate the fair value of stock options with service conditions and stock purchase rights under our ESPP on the grant date using the Black-Scholes option pricing model. We use the straight-line method to allocate compensation cost to reporting periods over the requisite service period in which the awards are expected to vest.
Stock-Based Compensation Stock-based compensation expense relates to stock options with service-based vesting conditions, stock options with performance and market-based vesting conditions, stock purchase rights under our employee stock purchase plan (ESPP), restricted common stock awards (RSAs) and restricted stock units (RSUs). All awards are measured at fair value on grant date and forfeitures are recognized as they occur.
Stock-Based Compensation Stock-based compensation expense relates to stock options with service-based vesting conditions, stock options with market-based vesting conditions, stock purchase rights under our employee stock purchase plan (ESPP), restricted common stock awards (RSAs) and restricted stock units (RSUs). All awards are measured at fair value on grant date and forfeitures are recognized as they occur.
For stock options with performance and market-based vesting conditions, stock-based compensation expense is recognized using an accelerated attribution method based on the derived service periods and not reversed if the achievement of the market condition does not occur. The fair value of these stock options is estimated using the Monte Carlo simulation model.
For stock options with market-based vesting conditions, stock-based compensation expense is recognized using an accelerated attribution method based on the derived service periods and not reversed if the achievement of the market condition does not occur. The fair value of these stock options is estimated using the Monte Carlo simulation model.
Selling, General and Administrative Expenses Selling, general and administrative expenses consist primarily of employee compensation, including stock-based compensation, and benefits for executive management, sales and marketing, customer support, finance, administrative, human resources, legal functions, allocated costs, professional service fees and other general overhead costs to support our operations.
Selling, General and Administrative Expenses Selling, general and administrative expenses consist primarily of employee compensation, including stock-based compensation, and benefits for executive management, sales and marketing, customer support, finance, administrative, human resources, legal functions, allocated costs, including depreciation, professional service fees and other general overhead costs to support our operations.
Standalone lease arrangements are outside the scope of Accounting Standards Codification (ASC) 606, Revenue Contracts with Customer and are therefore accounted for in accordance with ASC 842, Leases . The total consideration in a lease arrangement is allocated between lease and non-lease components on their relative stand-alone selling prices.
Standalone lease arrangements are outside the scope of Accounting Standards Codification (ASC) 606, Revenue Contracts with Customer and are therefore accounted for in accordance with ASC 842, Leases . The total consideration in a lease arrangement is allocated between lease and non-lease components on their relative standalone selling prices.
While our significant accounting policies are described in the notes to our consolidated financial statements, we believe that the following critical accounting policies are most important to understanding and evaluating our reported financial results. 96 Table of Contents Revenue Recognition Our revenue is generated primarily from sales of products and services.
While our significant accounting policies are described in the notes to our consolidated financial statements, we believe that the following critical accounting policies are most important to understanding and evaluating our reported financial results. 100 Table of Contents Revenue Recognition Our revenue is generated primarily from sales of products and services.
We maintain a letter of credit issued to the lessor in the amount of $0.5 million as of each of December 31, 2023 and 2022, which is secured by restricted cash and is presented as noncurrent at each date based on the term of the underlying lease.
We maintain a letter of credit issued to the lessor in the amount of $0.5 million as of each of December 31, 2024 and 2023, which is secured by restricted cash and is presented as noncurrent at each date based on the term of the underlying lease.
We value RSAs based on the difference between the fair value of the underlying stock at the measurement date and the purchase price. We value RSUs based on the fair value of the underlying stock at the measurement date.
We value RSAs based on the difference between the fair value of the underlying stock at the measurement date and the purchase price.
Recent Accounting Pronouncements See Note 2 to our consolidated financial statements included elsewhere in this Annual Report for more information about recent accounting pronouncements, the timing of their adoption, and our assessment, to the extent we have made one yet, of their potential impact on our financial condition of results of operations. 98 Table of Contents
Recent Accounting Pronouncements See Note 2 to our consolidated financial statements included elsewhere in this Annual Report for more information about recent accounting pronouncements, the timing of their adoption, and our assessment, to the extent we have made one yet, of their potential impact on our financial condition of results of operations.
If our available cash, cash equivalents and investments and anticipated cash flows from operations are insufficient to satisfy our liquidity requirements, we may consider raising additional 94 Table of Contents capital to expand our business, pursue strategic investments, take advantage of financing opportunities or for other reasons.
If our available cash, cash equivalents and investments and anticipated cash flows from operations are insufficient to satisfy our liquidity requirements, we may consider raising additional capital to expand our business, pursue strategic investments, take advantage of financing opportunities or for other reasons.
Financing Activities In 2023, cash provided by financing activities was $0.5 million, which was primarily attributable to proceeds of $0.4 million from the issuance of Class A common stock in connection with our employee stock purchase plan and net proceeds of $0.1 million from the exercise of stock options. In 2022, cash provided by financing activities was $3.9 million.
In 2023, cash provided by financing activities was $0.5 million, which was primarily attributable to proceeds of $0.4 million from the issuance of Class A common stock in connection with our employee stock purchase plan and net proceeds of $0.1 million from the exercise of stock options.
Our ability to generate product and service revenue sufficient to achieve profitability, if ever, will depend on the successful commercialization of the Proteograph Product Suite. We are commercializing the Proteograph Product Suite as an integrated solution comprised of consumables, our SP100 automation instrument and software.
Our ability to generate product and service revenue sufficient to achieve profitability, if ever, will depend on the successful commercialization of the Proteograph Product Suite and related products and services. We are commercializing the Proteograph Product Suite as an integrated solution comprised of consumables, our SP100 automation instrument and software.
In addition, we will continue to build the necessary infrastructure for these activities in the United States, European Union, the United Kingdom, and other countries and regions, including Asia-Pacific, as we execute on our commercialization strategy for the Proteograph. We leverage well-established unit operations to formulate and manufacture our NPs at our facilities in Redwood City, California.
In addition, we will continue to build the necessary infrastructure for these activities in the United States, European Union, the United Kingdom, and other countries and regions, including Asia-Pacific, as we execute on our commercialization strategy for the Proteograph. 94 Table of Contents We leverage well-established unit operations to formulate and manufacture our NPs at our facilities in Redwood City, California.
We intend to focus our commercial efforts in the United States and expect to grow our international presence. 91 Table of Contents Cost of Revenue We utilize third-party manufacturers for production of our SP100 instrument and we manufacture our NPs and assemble our assay kits internally.
We intend to focus our commercial efforts in the United States and expect to grow our international presence. Cost of Revenue We utilize third-party manufacturers for production of our SP100 instrument and we manufacture our NPs and assemble our assay kits internally.
If the product or service has no history of sales or if the sales volume is not sufficient, we rely upon prices set by management, adjusted for applicable discounts. A portion of our revenue relates to lease arrangements.
If the product or service has no history of sales or if the sales volume is not sufficient, we rely upon prices set by management, adjusted for applicable discounts. 101 Table of Contents A portion of our revenue relates to lease arrangements.
We obtain some of the reagents and components used in the 90 Table of Contents Proteograph workflow from third-party suppliers. While some of these reagents and components are currently sourced from a single supplier, these products are readily available from numerous suppliers.
We obtain some of the reagents and components used in the Proteograph workflow from third-party suppliers. While some of these reagents and components are currently sourced from a single supplier, these products are readily available from numerous suppliers.
We lease approximately 6,000 square feet of office space in San Diego, California that runs through September 2024. We have certain purchase commitments related to our inventory management with certain manufacturing suppliers wherein we are required to purchase the amounts forecasted in a blanket purchase order within a certain time period.
We lease approximately 3,500 square feet of office space in San Diego, California under a lease that runs through July 2025. We have certain purchase commitments related to our inventory management with certain manufacturing suppliers wherein we are required to purchase the amounts forecasted in a blanket purchase order within a certain time period.
Research and Development Expenses Research and development (R&D) expenses include costs associated with R&D of our technology and product candidates. R&D expenses consist primarily of employee compensation, including stock-based compensation and employee benefits, laboratory supplies used for in-house research, consulting costs, and allocated costs, including rent, depreciation, information technology and utilities.
R&D expenses consist primarily of employee compensation, including stock-based compensation and employee benefits, laboratory supplies used for in-house research, consulting costs, and allocated costs, including rent, depreciation, information technology and utilities.
The stand-alone selling price is based on the price we 97 Table of Contents would separately sell that promised good or service to a customer. If a stand-alone price is not available for a component, it is estimated using the best information available.
The standalone selling price is based on the price we would separately sell that promised good or service to a customer. If a standalone price is not available for a component, it is estimated using the best information available.
If a significant financing component exists, the transaction price is adjusted for the financing portion of the arrangement, which is recorded as interest income over the payment term using the effective interest method.
In such cases, we assess whether the arrangement contains a significant financing component. If a significant financing component exists, the transaction price is adjusted for the financing portion of the arrangement, which is recorded as interest income over the payment term using the effective interest method.
We expect our expenses to increase in connection with our ongoing activities, as we: • broadly commercialize the Proteograph Product Suite; • attract, hire and retain qualified personnel; • continue to build our sales, marketing, service, support and distribution infrastructure as part of our commercialization efforts; • build-out and expand our in-house NP manufacturing capabilities; • continue to engage in research and development of other products and enhancements to the Proteograph Product Suite; • implement operational, financial and management information systems; • obtain, maintain, expand, and protect our intellectual property portfolio; and • build the infrastructure to operate and scale as a public company.
Our expenses may increase in connection with our ongoing activities, as we: • broadly commercialize the Proteograph Product Suite; • attract, hire and retain qualified personnel; • continue to build our sales, marketing, service, support and distribution infrastructure as part of our commercialization efforts; • build-out and expand our in-house NP manufacturing capabilities; • continue to engage in research and development of other products and enhancements to the Proteograph Product Suite; • implement operational, financial and management information systems; • obtain, maintain, expand, and protect our intellectual property portfolio; and • build the infrastructure to operate and scale as a public company. 95 Table of Contents Components of Results of Operations Revenue Our product revenue consists of an instrument with embedded software essential to the instrument’s functionality and consumables.
The increase was due to higher rates of interest earned on cash invested in money market funds, U.S. Treasury securities, commercial paper, corporate securities and government agency debt in 2023. Liquidity and Capital Resources Since the date of our incorporation, we have incurred significant operating losses and negative cash flows from operations.
The decrease was primarily due to the loss in the equity method investment and lower rates of interest earned on cash invested in money market funds, U.S. Treasury securities, commercial paper, and corporate debt securities. Liquidity and Capital Resources Since the date of our incorporation, we have incurred significant operating losses and negative cash flows from operations.
The change in our net operating assets and liabilities was primarily due to an increase in inventory levels of $1.9 million for anticipated revenue growth and a $1.3 million increase in prepaid expenses and other current assets, which was partially offset by a decrease in accounts receivable of $0.3 million. 95 Table of Contents In 2022, cash used in operating activities was $60.8 million, attributable to a net loss of $93.0 million, partially offset by a net change in our net operating assets and liabilities of $7.1 million and non-cash charges of $39.3 million.
The change in our net operating assets and liabilities was primarily due to an increase in inventory levels of $1.9 million for anticipated revenue growth and a $1.3 million increase in prepaid expenses and other current assets, which was partially offset by a decrease in accounts receivable of $0.3 million.
We enter into agreements as a part of the normal course of business with various vendors, which are generally cancellable without material penalty upon written notice. Payments associated with these agreements are not included in this discussion of contractual obligations.
We enter into agreements as part of the normal course of business with various vendors, which are generally cancellable without material penalty upon written notice.
Cash Flows The following table summarizes our cash flows for the periods indicated: Year ended December 31, 2023 2022 (in thousands) Net cash used in operating activities $ (59,065 ) $ (60,780 ) Net cash provided by (used in) investing activities 37,904 (122,718 ) Net cash provided by financing activities 452 3,893 Net decrease in cash, cash equivalents and restricted cash $ (20,709 ) $ (179,605 ) Operating Activities In 2023, cash used in operating activities was $59.1 million, attributable to a net loss of $86.3 million, partially offset by a net change in our net operating assets and liabilities of $2.7 million and non-cash charges of $29.9 million.
Cash Flows The following table summarizes our cash flows for the periods indicated: Year ended December 31, 2024 2023 (in thousands) Net cash used in operating activities $ (46,109 ) $ (59,065 ) Net cash provided by investing activities 65,858 37,904 Net cash (used in) provided by financing activities (11,495 ) 452 Net increase (decrease) in cash, cash equivalents and restricted cash $ 8,254 $ (20,709 ) Operating Activities In 2024, cash used in operating activities was $46.1 million, attributable to a net loss of $86.6 million and a net change in our net operating assets and liabilities of $0.1 million, partially offset by non-cash charges of $40.6 million.
The contractual obligations represent future cash commitments and liabilities under agreements with third parties and exclude orders for goods and services entered into in the normal course of business that are not enforceable or subject to change. These outstanding commitments amounted to $6.3 million as of December 31, 2023.
The Company also has certain contractual obligations for third-party technology used as part of its normal operations. The contractual obligations represent future cash commitments and liabilities under agreements with third parties and exclude orders for goods and services entered into in the normal course of business that are not enforceable or subject to change.
Our contracts with our customer generally do not include rights of return. At times, we may enter into arrangements with payment terms which exceed one year from the transfer of control of the product or service. In such cases, we assess whether the arrangement contains a significant financing component.
Cash received from customers in advance of product shipment or providing services is recorded as a contract liability. Our contracts with our customer generally do not include rights of return. At times, we may enter into arrangements with payment terms which exceed one year from the transfer of control of the product or service.
Since we are in the early stages of commercialization, we have built, and will continue to build our sales, marketing, support and product distribution capabilities.
We are broadly commercializing the Proteograph Product Suite through a direct sales channel in the United States, and through both direct and distributor sales channels in regions outside the United States. Since we are in the early stages of commercialization, we have built, and will continue to build our sales, marketing, support and product distribution capabilities.
Revenue is recorded net of discounts and sales taxes collected on behalf of governmental authorities. Customers are invoiced generally upon shipment, or upon delivery of services, and payment is typically due within 30 or 60 days. Cash received from customers in advance of product shipment or providing services is recorded as a contract liability.
Revenue from services is recognized once the report is delivered to a customer, which is when the customer obtains benefit of the service. Revenue is recorded net of discounts and sales taxes collected on behalf of governmental authorities. Customers are invoiced generally upon shipment, or upon delivery of services, and payment is typically due within 30 or 60 days.
We take a long-term view in growing and scaling our business and regularly review opportunities that meet our long-term growth objectives.
These outstanding commitments amounted to $4.5 million as of December 31, 2024. We take a long-term view in growing and scaling our business and regularly review opportunities that meet our long-term growth objectives.
Shipping revenue is recognized when control of the product is transferred to the customer, and the related shipping and handling costs are included in the cost of revenue.
If any of these criteria were met, the lease was classified as a sales-type lease. If none of these criteria are met, the lease was classified as an operating lease. Shipping revenue is recognized when control of the product is transferred to the customer, and the related shipping and handling costs are included in the cost of revenue.
We will continue to use judgment in evaluating the expected volatility, expected terms, and interest rates utilized for our stock-based compensation calculations on a prospective basis. Assumptions we used in applying the Black-Scholes option-pricing model to determine the estimated fair value of our stock options granted involve inherent uncertainties and the application of significant judgment.
Assumptions we used in applying the Black-Scholes option pricing model to determine the estimated fair value of our stock options granted involve inherent uncertainties and the application of significant judgment. As a result, if factors or expected outcomes change and we use significantly different assumptions or estimates, our equity-based compensation could be materially different.
As of December 31, 2023, we had an accumulated deficit of $305.8 million and cash, cash equivalents, and investments of $373.1 million. We expect to continue to incur significant losses and do not expect positive cash flows from operations for the foreseeable future.
We expect to continue to incur significant losses and do not expect positive cash flows from operations for the foreseeable future.
The change in our net operating assets and liabilities was primarily due to an increase in inventory levels of $1.6 million for anticipated revenue growth, an increase in accounts receivable of $2.3 million from higher sales, an increase in prepaid expenses and other current assets of $0.7 million, an increase in other receivables of $0.5 million, an increase in other assets of $0.4 million and a decrease of $1.6 million in accounts payable.
The change in our net operating assets and liabilities was primarily due to an increase in inventory levels of $2.7 million, a decrease in accrued liabilities and other liabilities of $1.4 million, and an increase of $0.1 million in prepaid expenses and other assets, which was partially offset by an increase in accounts payable of $3.4 million, a decrease in accounts receivable of $0.5 million, and an increase in deferred revenue of $0.2 million. 99 Table of Contents In 2023, cash used in operating activities was $59.1 million, attributable to a net loss of $86.3 million, partially offset by a net change in our net operating assets and liabilities of $2.7 million and non-cash charges of $29.9 million.
Cost of revenue consists primarily of costs of the components of the Proteograph Product Suite, including the SP100 instrument and consumables and distribution-related expenses such as logistics and shipping costs. In addition, cost of revenue includes employee compensation, such as stock-based compensation and employee benefits, allocated overhead and charges related to inventory reserves.
Cost of revenue consists primarily of costs of the components of the Proteograph Product Suite, including the SP100 instrument and consumables, cost of services related to the generation and analysis of proteomic data on behalf of our customers, and distribution-related expenses such as logistics and shipping costs.
This was attributable to net proceeds from the exercise of stock options of $3.1 million and $0.8 million of proceeds from the issuance of Class A common stock in connection with our employee stock purchase plan.
Financing Activities In 2024, cash used in financing activities was $11.5 million, which was primarily attributable to the repurchases of Class A common stock under our share repurchase program of $11.8 million. This partially was offset by the proceeds of $0.3 million from the issuance of Class A common stock in connection with our employee stock purchase plan.
Our commercial strategy is focused on growing adoption by the research community of the Proteograph, expanding the installed base and increasing utilization to generate revenue from the purchase of Proteograph consumables. We expect a highly efficient sales model because our workflow integrates with most existing proteomics laboratories’ workflows and also complements large-scale genomics research.
We expect a highly efficient sales model because our workflow integrates with most existing proteomics laboratories’ workflows and also complements large-scale genomics research. We are focused on removing barriers to access to the Proteograph, including through the STAC service offering.
Our operating lease obligations reflect our lease obligations for our office and laboratory space in Redwood City, California and office space in San Diego, California.
Payments associated with these agreements are not included in this discussion of contractual obligations. 98 Table of Contents Our operating lease obligations reflect our lease obligations for our office and laboratory space in Redwood City, California and office space in San Diego, California.
Research and Development Year ended December 31, Change 2023 2022 Amount % (dollars in thousands) Research and development $ 53,019 $ 45,797 $ 7,222 16 % Research and development expenses increased by $7.2 million, or 16%, from $45.8 million in 2022 to $53.0 million in 2023.
Research and Development Year ended December 31, Change 2024 2023 Amount % (dollars in thousands) Research and development $ 50,585 $ 53,019 $ (2,434 ) (5 )% Research and development expenses in fiscal year 2024 decreased by $2.4 million, or 5% as compared to the prior year.
Our grant and other revenue consists of research-related grants, lease arrangements, and shipping revenue. Our revenue is primarily generated domestically.
Our service revenue primarily consists of revenue received from the generation and analysis of proteomic data on behalf of customers. Our related party revenue is comprised of both product sales and services performed for related parties. Our grant and other revenue consists of research-related grants, lease arrangements, and shipping revenue. Our revenue is primarily generated domestically.
Hamilton has represented to us that it maintains ISO 9001 and ISO 13485 certifications. During the years ended December 31, 2023 and 2022, we incurred a net loss of $86.3 million and $93.0 million and used $59.1 million and $60.8 million of cash in operations, respectively.
During the years ended December 31, 2024 and 2023, we incurred a net loss of $86.6 million and $86.3 million and used $46.1 million and $59.1 million of cash in operations, respectively. As of December 31, 2024, we had an accumulated deficit of $392.4 million and cash, cash equivalents, and investments of $299.5 million.
The increase was primarily due to an increase in product development efforts related to the Proteograph Product Suite, including $2.4 million increase in employee compensation costs, a $0.6 million increase in stock-based compensation, due to growth in research and development personnel and a $2.2 million increase in allocated costs.
The decrease was primarily due to a $5.1 million decrease in stock-based compensation and a $2.3 million decrease in employee compensation costs. The decrease was offset by a $4.2 million increase in professional services and a $0.9 million increase in facility expenses.
The increase was offset by a $2.9 million decrease in professional services. Total Other Income Year ended December 31, Change 2023 2022 Amount % (dollars in thousands) Total other income $ 17,186 $ 4,269 $ 12,917 303 % Total other income increased by $12.9 million, or 303%, from $4.3 million in 2022 to $17.2 million in 2023.
Total Other Income Year ended December 31, Change 2024 2023 Amount % (dollars in thousands) Total other income $ 13,600 $ 17,186 $ (3,586 ) (21 )% Total other income in fiscal year 2024 decreased by $3.6 million, or 21% as compared to the prior year.
Selling, General and Administrative Year ended December 31, Change 2023 2022 Amount % (dollars in thousands) Selling, general and administrative $ 58,950 $ 58,531 $ 419 1 % Selling, general and administrative expenses increased by $0.4 million, or 1%, from $58.5 million in 2022 to $59.0 million in 2023, primarily due to a $3.3 million increase in employee compensation costs and a $0.1 million increase in travel expense.
Selling, General and Administrative Year ended December 31, Change 2024 2023 Amount % (dollars in thousands) Selling, general and administrative $ 56,571 $ 58,950 $ (2,379 ) (4 )% Selling, general and administrative expenses in fiscal year 2024 decreased by $2.4 million, or 4% as compared to the prior year.
In 2022, cash used in investing activities was $122.7 million, which related to purchases of available-for-sale securities, net of proceeds from maturities, of $112.6 million, in addition to $10.3 million in payments primarily for laboratory equipment.
Investing Activities In 2024, cash provided by investing activities was $65.9 million, which was attributable to the proceeds from maturities of available-for-sale securities of $342.0 million and proceeds from disposal of property and equipment of $0.3 million.
Non-cash charges primarily consisted of stock-based compensation of $33.7 million, $3.9 million of depreciation and amortization and $1.7 million of non-cash operating lease expense.
Non-cash charges primarily consisted of $28.2 million of stock-based compensation, $6.2 million of depreciation and amortization, $3.1 million of net amortization of premium on available-for-sale securities, $2.6 million of loss on equity method investment, and $0.3 million of loss on disposal of property and equipment.