Biggest changeYear Ended December 31, Change 2023 vs 2022 2023 2022 2021 $ % (in thousands, except percentage) Revenue $ 143,993 $ 283,605 $ 218,808 $ (139,612) (49 %) Cost of revenue 61,905 100,643 79,346 (38,738) (38 %) Gross profit 82,088 182,962 139,462 (100,874) (55 %) Operating expenses: Research and development 97,589 90,288 52,104 7,301 8 % Selling, general and administrative 83,971 76,532 54,515 7,439 10 % Acquisition related costs 7,728 — — 7,728 n/a Total operating expenses 189,288 166,820 106,619 22,468 13 % Income (loss) from operations (107,200) 16,142 32,843 (123,342) (764 %) Interest income 26,958 7,291 — 19,667 270 % Other expense, net (141) (97) (488) (44) 45 % Income (loss) before income taxes (80,383) 23,336 32,355 (103,719) (444 %) Income tax expense (152) (82) (78) (70) 85 % Net income (loss) attributable to common stockholders and comprehensive income $ (80,535) $ 23,254 $ 32,277 $ (103,789) (446 %) A discussion of changes in our results of operations from fiscal 2021 to fiscal 2022 has been omitted from this Annual Report on Form 10-K, but may be found in “Part II, Item 7.
Biggest changeYear Ended December 31, Change 2024 vs 2023 2024 2023 2022 $ % (in thousands, except percentage) Revenue $ 202,697 $ 143,993 $ 283,605 $ 58,704 41 % Cost of revenue 98,203 61,905 100,643 36,298 59 % Gross profit 104,494 82,088 182,962 22,406 27 % Operating expenses: Research and development 106,855 97,589 90,288 9,266 9 % Selling, general and administrative 102,157 83,971 76,532 18,186 22 % Acquisition related costs 10,722 7,728 — 2,994 39 % Total operating expenses 219,734 189,288 166,820 30,446 16 % Income (loss) from operations (115,240) (107,200) 16,142 (8,040) 8 % Interest income 22,883 26,958 7,291 (4,075) (15 %) Other expense, net (758) (141) (97) (617) 438 % Income (loss) before income taxes (93,115) (80,383) 23,336 (12,732) 16 % Income tax expense (486) (152) (82) (334) 220 % Net income (loss) attributable to common stockholders and comprehensive income (loss) $ (93,601) $ (80,535) $ 23,254 $ (13,066) 16 % A discussion of changes in our results of operations from fiscal 2022 to fiscal 2023 has been omitted from this Annual Report on Form 10-K, but may be found in “Part II, Item 7.
The MD&A contains forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act that involve risks and uncertainties, which are discussed under Part I, Item 1A. Overview The ability to accurately measure and reference time has been essential to many of humankind’s greatest inventions and technological advances.
The MD&A contains forward-looking statements within the meaning of Section 27A of the Securities Act and Section 21E of the Exchange Act that involve risks and uncertainties, which are discussed under Part I, Item 1A. Overview The ability to accurately measure and reference time has been essential to humankind’s greatest inventions and technological advances.
The future effects of macroeconomic events on our business and results of operations, including inventory levels at our customer and their affiliates, partners, and contract manufacturers as well as demand for our products, are uncertain and difficult to predict.
The future effects of macroeconomic events on our business and results of operations, including inventory levels at our customers and their affiliates, partners, and contract manufacturers as well as demand for our products, are uncertain and difficult to predict.
We believe that some of our customers built up inventory of our products in 2022 to overcome the industry-wide supply constraints that occurred in the previous periods and that the macroeconomic events in 2022 and 2023 led to reduced demand for our customers' products, which led to an inventory buildup at some of our customers and their affiliates, partners and contract manufacturers, which has adversely affected sales of our products.
We believe that some of our customers built up inventory of our products in 2022 to overcome the industry-wide supply constraints that occurred in the previous periods and that the macroeconomic events in the second half of 2022 and through 2023 led to reduced demand for our customers' products, which led to an inventory buildup at some of our customers and their affiliates, partners and contract manufacturers, which has adversely affected sales of our products.
Customer Demand and Product Life Cycles Once customers design our Precision Timing solutions into their products, we closely monitor all aspects of their demand cycle, including the initial design phase, prototype production, volume production, and inventories, as well as end- 46 Table of Contents market demand, including seasonality, cyclicality, and the competitive landscape.
Customer Demand and Product Life Cycles Once customers design our Precision Timing solutions into their products, we closely monitor all aspects of their demand cycle, including the initial design phase, prototype production, volume production, and inventories, as well as end-market demand, including seasonality, cyclicality, and the competitive landscape.
At December 31, 2023 and 2022, we had research and development tax credit carryforwards of approximately $3.9 million and $3.9 million, respectively for U.S. federal income tax purposes and $3.6 million and $3.6 million, respectively for state income tax purposes.
At December 31, 2024 and 2023, we had research and development tax credit carryforwards of approximately $3.9 million and $3.9 million, respectively for U.S. federal income tax purposes and $3.6 million and $3.6 million, respectively for state income tax purposes.
The approach to estimating an initial contingent consideration associated with the purchase price also uses similar unobservable factors such as revenue projections over the term of the contingent earn-out period, discounted for the period over which the initial contingent consideration is measured, and expected volatility.
The approach to estimating an initial contingent consideration associated with the purchase price also uses similar unobservable factors such as revenue projections over the term of the contingent earn-out period, discounted for the 53 Table of Contents period over which the initial contingent consideration is measured, and expected volatility.
Our research and development expense consists primarily of personnel costs, which include stock-based compensation, as well as pre-production engineering mask costs, software license and intellectual property expenses, design tools and prototype-related expenses, facility costs, supplies, professional and consulting fees, and allocated overhead costs, which may be offset by non-recurring engineering contra-expenses recorded in certain periods.
Our research and development expense consists primarily of personnel costs, as well as pre-production engineering mask costs, software license and intellectual property expenses, design tools and prototype-related expenses, facility costs, supplies, professional and consulting fees, and allocated overhead costs, which may be offset by non-recurring engineering contra-expenses recorded in certain periods.
We estimate the fair value based upon assumptions we believe to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from our estimates. Estimates associated with the 53 Table of Contents accounting for acquisitions may change as additional information becomes available regarding the assets acquired and liabilities assumed.
We estimate the fair value based upon assumptions we believe to be reasonable, but which are inherently uncertain and unpredictable and, as a result, actual results may differ from our estimates. Estimates associated with the accounting for acquisitions may change as additional information becomes available regarding the assets acquired and liabilities assumed.
The net proceeds from the Sales Agreement were offset by tax withholdings paid on behalf of employees for net share settlement of $37.6 million. Critical Accounting Estimates Our consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles.
The net proceeds from the Sales Agreement were offset by tax withholdings paid on behalf of employees for net share settlement of $41.3 million. Critical Accounting Estimates Our consolidated financial statements have been prepared in accordance with U.S. generally accepted accounting principles.
In May 2022, we entered into a Sales Agreement ("Sales Agreement") with Stifel, Nicolaus & Company, Incorporated ("Stifel"), under which we may offer and sell from time to time at our sole discretion, up to an aggregate of 800,000 shares of our common stock, par value $0.0001 per share, through Stifel as our sales agent.
In February 2024, we entered into a Sales Agreement ("Sales Agreement") with Stifel, Nicolaus & Company, Incorporated ("Stifel"), under which we may offer and sell from time to time at our sole discretion, up to an aggregate of 1,200,000 shares of our common stock, par value $0.0001 per share, through Stifel as our sales agent.
In 2020 and 2021 there were a number of industry-wide supply constraints affecting the supply of analog circuits manufactured by certain foundries, including Taiwan Semiconductor Manufacturing Company, and affecting outsourced semiconductor assembly and test providers.
In 2020 and 2021, there were a number of industry-wide supply constraints affecting the supply of analog circuits manufactured by certain foundries, including TSMC, and affecting outsourced semiconductor assembly and test providers.
Timing technology has continued to evolve over centuries, forming a critical aspect of broader technological evolution. Timing is the heartbeat of digital electronic systems, ensuring that the system runs smoothly and reliably by providing and distributing clock signals to various critical components such as central processing units, communication and interface ICs, and radio frequency components.
Timing technology has continued to evolve over centuries, underpinning broader technological evolution and is the heartbeat of digital electronic systems. Here, timing ensures that the system runs smoothly and reliably by providing and distributing clock signals to various critical components such as central processing units, communication and interface ICs, and radio frequency components.
Sales, General and Administrative Sales, general and administrative expense consists of personnel costs, including stock-based compensation, professional and consulting fees, accounting and audit fees, legal costs, field application engineering support, travel costs, advertising expenses, and allocated overhead costs.
Sales, General and Administrative Sales, general and administrative expense consists of personnel costs, professional and consulting fees, accounting and audit fees, legal costs, field application engineering support, travel costs, advertising expenses, and allocated overhead costs.
Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Form 10-K for fiscal 2022 filed with the SEC on February 27, 2023. Revenue We derive revenue primarily from sales of Precision Timing solutions to distributors who in turn sell to our end customers. We also sell products directly to some of our end customers.
Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Form 10-K for fiscal 2023 filed with the SEC on February 26, 2024. Revenue We derive revenue primarily from sales of Precision Timing solutions to distributors. We also sell products directly to some of our end customers.
During the year ended December 31, 2023, we sold 400,000 shares of our common stock under the Sales Agreement at a weighted average price of $115.06 per share resulting in net proceeds to us of $44.8 million, after deducting underwriting discounts and commissions and offering costs. Our purchase obligations primarily include design and simulation licenses.
During the year ended December 31, 2024, we sold 332,500 shares of our common stock under the Sales Agreement at a weighted average price of $151.91 per share resulting in net proceeds to us of $48.8 million, after deducting underwriting discounts and commissions and offering costs. Our purchase obligations primarily include design and simulation licenses.
The changes in operating assets and liabilities resulted in cash provided primarily due to higher accounts receivable due to timing of shipments, an increase in inventories as we managed our inventory levels, higher prepaid expenses and other assets related to advance payments to suppliers for inventory and royalties, offset by an increase in accounts payable and lower accrued expenses and other liabilities due to timing of payments.
The changes in operating assets and liabilities resulted in cash used for operations primarily due to higher accounts receivable due to timing of shipments, increase in inventories as we managed our inventory levels, higher prepaid expenses and other assets, partially offset by higher accrued expenses and other liabilities and higher accounts payable due to timing of payments.
We are dependent on the availability of this capacity to manufacture and assemble our products and we can provide no assurance that adequate capacity will be available to us in the future.
We are dependent on the availability of this capacity to manufacture and assemble our products and we can provide no assurance that adequate capacity will be available to us in the future. We cannot predict the duration or timing of any downturn or upturn in the semiconductor industry.
At December 31, 2023 and 2022, we had federal NOL carry-forwards of approximately $230.2 million and $213.3 million, respectively, state NOL carry-forwards of approximately $83.7 million 50 Table of Contents and $65.3 million, respectively, and foreign NOL carry-forwards of approximately $1.7 million and $1.7 million, respectively. These federal, state, and foreign net operating loss carry-forwards will expire beginning in 2028.
At December 31, 2024 and 2023, we had federal NOL carry-forwards of approximately $250.7 million and $230.2 million, respectively, state NOL carry-forwards of approximately $84.5 million and $83.7 million, respectively, and foreign NOL carry-forwards of approximately $2.0 million and $1.7 million, respectively. These federal, state, and foreign net operating loss carry-forwards will expire beginning in 2028.
As electronics evolve to deliver higher performance levels, even in increasingly challenging environments, while also being more complex and size-constrained, we believe they will require more semiconductor-based sophisticated timing solutions that cannot be developed in legacy quartz crystal-based technologies.
As electronics evolve to deliver higher performance, connectivity, and intelligence, even in increasingly challenging environments, while also being more complex and size-constrained, we believe they will require more sophisticated semiconductor-based timing solutions that cannot be developed in legacy quartz crystal-based technologies. Precision timing fills this need with the performance, power, size, and cost that is required by these applications.
Cost of revenue also includes depreciation of production equipment, inventory write-downs, amortization of internally developed software, shipping and handling costs, and allocation of overhead and facility costs. We also include credits for rebates received from foundries to cost of revenue.
Cost of revenue also includes depreciation of production equipment, inventory write-downs, shipping and handling costs, and allocation of overhead and facility costs. We also include credits for rebates received from third-party contract manufacturers in cost of revenue.
We measure revenue based on the amount of consideration we expect to be entitled to in exchange for products. Variable consideration is estimated and reflected as an adjustment to the transaction price. Depending on the terms of the contract, variable consideration is estimated using either the expected value approach or the most likely value approach.
Variable consideration is estimated and reflected as an adjustment to the transaction price. Depending on the terms of the contract, variable consideration is estimated using either the expected value approach or the most likely value approach.
We determine variable consideration at the end of each reporting period, which consists primarily of price adjustments and product returns by estimating the amount of consideration we expect to receive from our customers based on historical experience. Adjustments for the variable consideration has been in the range of 2% to 4% on a quarterly basis for the current year.
We determine variable consideration at the end of each reporting period, which consists primarily of price adjustments and product returns by estimating the amount of consideration we expect to be entitled to from our customers based on historical experience.
We believe that continued investment in our products and services is important for our future growth and acquisition of new customers and, as a result, we expect our research and development expenses to continue to increase in absolute dollars.
There is no assurance that we will have non-recurring engineering contra-expense from period to period. We expense research and development costs as incurred. We believe that continued investment in our products is important for our future growth and acquisition of new customers and, as a result, we expect our research and development expenses to continue to increase in absolute dollars.
Our capital expenditures for property and equipment have primarily been for general business purposes, including machinery and equipment, leasehold improvements, acquired software, internally developed software used in production and support of our products, computer equipment used internally, and production masks to manufacture our products. In 2023, cash used in investing activities was $36.7 million.
Investing Activities Our investing activities consist primarily of the purchase of short-term investments and capital expenditures for property and equipment purchases. Our capital expenditures for property and equipment have primarily been for general business purposes, including machinery and equipment, leasehold improvements, acquired software, computer equipment used internally, and production masks to manufacture our products.
We may incur incremental costs in 2024 and beyond related to the Aura transaction. Interest Income and Other Expense, net Interest income and other expense consists primarily of interest income on our cash balances, and foreign exchange gains and losses.
We will continue to incur incremental costs beyond 2024 related to the Aura transaction arising from changes in the fair value of the sales-based earnout liability and accretion of acquisition consideration payable. Interest Income and Other Expense, net Interest income and other expense consists primarily of interest income on our cash balances, and foreign exchange gains and losses.
Selling, general and administrative expense increased by $7.4 million, or 10%, for the year ended December 31, 2023 compared to the same period in 2022, primarily due to higher stock-based compensation expense of $10.8 million, higher personnel costs of $1.0 million related to increased headcount, partially offset by $2.4 million reduction in sales commission payouts due to lower sales, lower consulting fees of $1.0 million, and lower advertising spend of $0.7 million.
Selling, general and administrative expense increased by $18.2 million, or 22%, for the year ended December 31, 2024 compared to the same period in 2023, primarily due to higher stock-based compensation expense of $12.0 million, higher wages and bonus of $4.2 million related to increased headcount, higher sales commission payouts of $0.7 million due to higher sales, and higher travel costs of $0.6 million.
International sales represented approximately 86%, 88%, and 94% of net revenues in 2023, 2022, and 2021, respectively. 48 Table of Contents Cost of Revenue, Gross Profit, and Gross Margin Cost of revenue consists of wafers acquired from third-party foundries, assembly, packaging, and test cost of our products paid to third-party contract manufacturers, and personnel and other costs associated with our manufacturing operations.
Cost of Revenue, Gross Profit, and Gross Margin Cost of revenue consists of wafers acquired from third-party foundries, assembly, packaging, and test cost of our products paid to third-party contract manufacturers, and personnel and other costs associated with our manufacturing operations.
Our customers have limited return rights under our contracts with them. If variable considerations are anticipated to exceed historical experience, we may adjust our sales returns allowance accordingly to properly reflect our net revenue.
Adjustments for the variable consideration has been in the range of 2% to 3% on a quarterly basis for the current year. Our customers have limited return rights under our contracts with them. If variable considerations are anticipated to exceed historical experience, we may adjust our sales returns allowance accordingly to properly reflect our net revenue.
We also consider design wins critical to our future success and anticipate being increasingly dependent on revenue from new design wins for our new higher-end products with higher average selling prices (“ASPs”).
We work closely with our customers to understand their product roadmaps and strategies. Our end customers continuously develop new products in existing and new application areas. We also consider design wins critical to our future success and anticipate being increasingly dependent on revenue from new design wins for our new higher-end products which have higher average selling prices (“ASPs”).
We believe that this inventory buildup will negatively impact the sales of our products until such inventory buildup is reduced and could result in decreases in our sales and margins, and could materially harm our results of operations.
We believe that while this inventory buildup has reduced through the second half of 2023 and in 2024, any further increase could negatively impact the sales of our products and could result in decreases in our sales and margins, and could materially harm our results of operations.
As of December 31, 2023 we also held $518.7 million of short-term investments in held-to-maturity securities which consisted of Treasury Bills. Our principal use of cash is to fund our operations, to support growth through capital investments, and to acquire complementary businesses, products, services, or technologies in the future.
As of December 31, 2024 and 2023, we also had cash and cash equivalents of $6.1 million and $9.5 million, respectively. Our principal use of cash is to fund our operations, to support growth through capital investments, and to acquire complementary businesses, products, services, or technologies in the future.
Revenue Recognition We derive our revenue from product sales primarily to distributors, who in turn sell to original equipment manufacturers or other end customers. We recognize product revenue, at a point in time, upon shipment when we satisfy our performance obligations as evidenced by the transfer of control of our products to customers.
Revenue Recognition We derive our revenue from product sales primarily to distributors. We recognize product revenue, at a point in time, upon shipment when we satisfy our performance obligations as evidenced by the transfer of control of our products to customers. We measure revenue based on the amount of consideration we expect to be entitled to in exchange for products.
Inventories Inventories consist of raw materials, work-in-process, and finished goods and are stated at the lower of standard cost, determined using first-in first out method or market net realizable value. We review and set standard costs to approximate actual manufacturing costs.
Inventories Inventories consist of raw materials, work-in-process, and finished goods and are stated at the lower of standard cost, (which approximates actual cost on a first-in first out basis) or net realizable value.
Year Ended December 31, Change 2023 vs 2022 2023 2022 2021 $ % (in thousands except percentage) Operating Expenses: Research and development $ 97,589 $ 90,288 $ 52,104 $ 7,301 8 % Selling, general and administrative 83,971 76,532 54,515 7,439 10 % Acquisition related costs 7,728 — — 7,728 n/a Total operating expenses $ 189,288 $ 166,820 $ 106,619 $ 22,468 13 % Research and Development Our research and development efforts are focused on the design and development of Precision Timing solutions.
Year Ended December 31, Change 2024 vs 2023 2024 2023 2022 $ % (in thousands except percentage) Operating Expenses: Research and development $ 106,855 $ 97,589 $ 90,288 $ 9,266 9 % Selling, general and administrative 102,157 83,971 76,532 18,186 22 % Acquisition related costs 10,722 7,728 — 2,994 39 % Total operating expenses $ 219,734 $ 189,288 $ 166,820 $ 30,446 16 % 49 Table of Contents Research and Development Our research and development efforts are focused on the design and development of Precision Timing solutions.
If we are unable to raise additional capital when we need it, it would harm our business, results of operations and financial condition. 51 Table of Contents The following table summarizes our cash flows for the periods indicated: Year Ended December 31, 2023 2022 2021 (in thousands) Net cash provided by operating activities $ 8,056 $ 39,752 $ 59,078 Net cash used in investing activities (36,660) (560,088) (33,788) Net cash provided by (used in) financing activities 3,469 (4,522) 460,646 Net increase (decrease) in cash and cash equivalents $ (25,135) $ (524,858) $ 485,936 Operating Activities In 2023, net cash provided by operating activities of $8.1 million was primarily due to net loss of $80.5 million and a change in operating assets and liabilities of $4.3 million, offset by depreciation and amortization, stock-based compensation expense, net change in unrealized interest on held to maturity securities, change in fair value of sales based earnout liability and acquisition consideration payable for a total of $92.9 million.
If we are unable to raise additional capital when we need it, it would harm our business, results of operations and financial condition. 51 Table of Contents The following table summarizes our cash flows for the periods indicated: Year Ended December 31, 2024 2023 2022 (in thousands) Net cash provided by operating activities $ 23,190 $ 8,056 $ 39,752 Net cash provided by (used in) investing activities 64,759 (36,660) (560,088) Net cash provided by (used in) financing activities (91,311) 3,469 (4,522) Net increase decrease in cash and cash equivalents $ (3,362) $ (25,135) $ (524,858) Operating Activities In 2024, net cash provided by operating activities of $23.2 million was primarily due to net loss of $93.6 million and a change in operating assets and liabilities of $25.0 million, offset by non-cash expenses of $141.8 million.
Our programmable architecture also plays a key role in ensuring optimal production flexibility, as it allows us to offer shorter lead times and the ability to meet custom requirements more easily.
Our programmable architecture also plays a key role in ensuring optimal production flexibility. In contrast to products offered by traditional timing device suppliers, our products are batch produced and then custom programmed to customer needs, allowing us to offer shorter lead times and the ability to meet custom requirements more easily.
Year Ended December 31, Change 2023 vs 2022 2023 2022 2021 $ % (in thousands except percentage) Cost of Revenue $ 61,905 $ 100,643 $ 79,346 $ (38,738) (38 %) Gross Profit 82,088 182,962 139,462 (100,874) (55 %) Gross Margin 57 % 65 % 64 % Gross profit decreased by $100.9 million in the year ended December 31, 2023 compared to the same period in 2022.
Year Ended December 31, Change 2024 vs 2023 2024 2023 2022 $ % (in thousands except percentage) Cost of Revenue $ 98,203 $ 61,905 $ 100,643 $ 36,298 59 % Gross Profit 104,494 82,088 182,962 22,406 27 % Gross Margin 52 % 57 % 65 % Gross profit increased by $22.4 million in the year ended December 31, 2024 compared to the same period in 2023.
However, we expect our research and development expense to fluctuate as a percentage of revenue from period to period depending on the timing of these expenses. 49 Table of Contents Research and development expense increased by $7.3 million, or 8%, for the year ended December 31, 2023 compared to the same period in 2022, primarily due to an increase in stock-based compensation expense of $7.7 million, a decrease in non-recurring engineering contra-expense recognized of $5.1 million, an increase in depreciation and amortization of lab equipment and licenses of $2.7 million, and higher personnel costs of $1.4 million due to increased headcount, partially offset by lower engineering spend towards ongoing new product development of $9.5 million.
Research and development expense increased by $9.3 million, or 9%, for the year ended December 31, 2024 compared to the same period in 2023, primarily due to an increase in stock-based compensation expense of $5.0 million, a decrease in non-recurring engineering contra-expense recognized of $2.3 million, and higher engineering spend towards ongoing new product development of $1.6 million.
In 2022, net cash provided by operating activities of $39.8 million was primarily due to net income of $23.3 million and depreciation and amortization, stock-based compensation expense, and net change in unrealized interest on held to maturity investments of $67.5 million, partially offset by a change in operating assets and liabilities of $51.0 million.
In 2023, net cash provided by operating activities of $8.1 million was primarily due to a net loss of $80.5 million and a change in operating assets and liabilities of $4.3 million, offset by depreciation and amortization, stock-based compensation expense, a net change in unrealized interest on held to maturity securities, change in fair value of sales based earnout liability and acquisition consideration payable for a total of $92.9 million.
The decrease was primarily related to a decrease in sales volume by 47% as well as decrease in ASPs. Lower sales volume was driven by lower demand for our products due to macroeconomic conditions, and excess inventory buildup at many of our customers and end-customers, distributors and their affiliates, partners, and contract manufacturers.
Lower sales volume in the prior year was driven by excess inventory buildup at many of our customers, distributors and their affiliates, partners, and contract manufacturers, and lower demand for our products due to macroeconomic conditions. Our top ten direct customers, including distributors, accounted for approximately 84%, 82% and 74% of net revenues in 2024, 2023, and 2022, respectively.
The net proceeds from the Sales Agreement were offset by tax withholdings paid on behalf of employees for net share settlement of $41.3 million. 52 Table of Contents During the year ended December 31, 2022, we sold 225,334 shares of our common stock under the Sales Agreement resulting in net proceeds to us of $33.0 million, after deducting underwriting discounts and commissions of $0.7 million and offering costs of $0.2 million.
During the year ended December 31, 2024, we sold 332,500 shares of our common stock under the Sales Agreement resulting in net proceeds to us of $48.8 million, after deducting underwriting discounts and commissions of $1.0 million and offering costs of $0.7 million.
However, we expect our gross margin to fluctuate on a quarterly basis as a result of changes in ASPs due to new product introductions, existing product transitions into high-volume manufacturing, manufacturing costs, and our product mix.
However, we expect our gross margin to fluctuate on a quarterly basis as a result of changes in ASPs due to new product introductions, existing product transitions into high-volume manufacturing, manufacturing costs, and our product mix. 47 Table of Contents Cyclical Nature of the Semiconductor Industry The semiconductor industry is highly cyclical and is characterized by constant and rapid technological change, rapid product obsolescence, price erosion, evolving standards, short product life cycles, and wide fluctuations in product supply and demand.
Four customers in 2023 and three customers each in 2022, and 2021, which are distributors of our products, each accounted for more than 10% of our net revenues.
Three customers each in 2024, and 2022, and four customers in 2023 which are distributors of our products, accounted for more than 10% of our net revenues. International sales,identified based upon the ship-to location of the customers who purchased the Company’s products, represented approximately 92%, 86%, and 88% of net revenues in 2024, 2023, and 2022, respectively.
Our Precision Timing solutions are the heartbeat of our customers’ electronic systems, providing the timing functionality that is needed for electronics to operate reliably and correctly. We provide Precision Timing solutions that are differentiated by high performance, high resilience, and high reliability, along with programmability, small size, and low power consumption.
We are a leading provider of Precision Timing solutions to the global electronics industry. Our Precision Timing solutions are the heartbeat of our customers’ electronic systems, providing the timing functionality that is needed for electronics to operate reliably and accurately.
We paid $3.3 million to purchase intangible assets in software licenses. All such payments were partially offset by $1,061.0 million proceeds from the maturity of held to maturity investments. In 2022, cash used in investing activities was $560.1 million. We paid $673.4 million to purchase short-term investments in held-to-maturity securities.
We paid $3.3 million to purchase intangible assets in software licenses. All such payments were partially offset by $1,061.0 million proceeds from the maturity of held to maturity investments. Financing Activities Our financing activities have primarily consisted of proceeds from issuance of shares, payment of withholding of taxes on restricted stock units and payment of acquisition related consideration and earnouts.
Our all-silicon solutions are based on three fundamental areas of expertise: micro-electro-mechanical systems (“MEMS”), analog mixed-signal design capabilities, and advanced system-level integration expertise. At the heart of our Precision Timing solutions are our MEMS, analog/mixed-signal, and systems technologies.
Our current solutions include various types of oscillators, as well as clock ICs and resonators. Our all-silicon solutions are based on three fundamental areas of technical expertise: MEMS, analog mixed-signal design, and advanced system-level integration.
For additional discussion please see Part I, Item 1A "Risk Factors" of this report, especially the risk factor titled “Global macroeconomic conditions have harmed and may continue to harm our business” and “Our revenue and operating results may fluctuate from period to period, which could cause our stock price to fluctuate.” Impact of COVID-19 on our Business The COVID-19 pandemic impacted our workforce and the operations of our customers and suppliers during 2022, however in 2023 it did not have a material impact on our workforce or, to our knowledge, the operations of our customers or suppliers.
For additional discussion please see Part I, Item 1A "Risk Factors" of this report, especially the risk factor titled “Global macroeconomic conditions have harmed and may continue to harm our business” and “Our revenue and operating results may fluctuate from period to period, which could cause our stock price to fluctuate.” 46 Table of Contents Key Factors Affecting Our Performance Customer Orders and Forecasts Because our sales are made pursuant to standard purchase orders, orders may be cancelled, reduced, or rescheduled with little or no notice and without penalty.
Year Ended December 31, Change 2023 vs 2022 2023 2022 2021 $ % (in thousands except percentage) Interest income $ 26,958 $ 7,291 $ — $ 19,667 270% Other expense, net (141) (97) (488) (44) 45 % Total interest income and other expense, net $ 26,817 $ 7,194 $ (488) $ 19,623 273% Interest income and other expense, net increased $19.6 million for the year ended December 31, 2023 compared to the same period in 2022, primarily related to higher interest income earned on short term investments and net unrealized loss on foreign exchange rates due to increased activities in our foreign subsidiaries and unfavorable exchange rate fluctuations.
Year Ended December 31, Change 2024 vs 2023 2024 2023 2022 $ % (in thousands except percentage) Interest income $ 22,883 $ 26,958 $ 7,291 $ (4,075) (15)% Other expense, net (758) (141) (97) (617) 438 % Total interest income and other expense, net $ 22,125 $ 26,817 $ 7,194 $ (4,692) (17)% 50 Table of Contents Interest income and other expense, net decreased $4.7 million for the year ended December 31, 2024 compared to the same period in 2023, primarily related to lower interest income earned on short term investments due to lower interest rates and a decrease in investment balances arising from acquisition related payments and higher capital expenditures.
Year Ended December 31, Change 2023 vs 2022 2023 2022 2021 $ % (in thousands except percentage) Income tax expense $ (152) $ (82) $ (78) $ (70) 85% Liquidity and Capital Resources As of December 31, 2023 and 2022, we had cash and cash equivalents of $9.5 million and $34.6 million, respectively.
Year Ended December 31, Change 2024 vs 2023 2024 2023 2022 $ % (in thousands except percentage) Income tax expense $ (486) $ (152) $ (82) $ (334) 220% Liquidity and Capital Resources As of December 31, 2024 and 2023 we held short-term investments in held-to-maturity securities of $412.7 million and $518.7 million, respectively, which consisted of Treasury Bills.
In addition, changes in forecasts or the timing of orders from customers exposes us to the risks of inventory shortages or excess inventory. We may not be able to fulfill increased demand, at least in the short term, as we do not intend to acquire excess inventory to pre-build custom products.
We may not be able to fulfill increased demand, at least in the short term, as we do not intend to acquire excess inventory to pre-build custom products. Design Wins with New and Existing Customers Our solutions enable our customers to differentiate their product offerings and position themselves to gain market share.
We paid $31.8 million largely to purchase test and other manufacturing equipment to support the increase in demand of our products and other property and equipment for general business purposes. We paid $3.9 million to purchase intangible assets in software licenses. All such payments were offset by $149.0 million proceeds from the maturity of held to maturity investments.
This was partially offset by purchases of $807.8 million of short-term investments in held-to-maturity securities, $36.2 million largely to purchase test and other manufacturing equipment to support our operations and other property and equipment for general business purposes, and $0.5 million to purchase intangible assets in software licenses. In 2023, cash used in investing activities was $36.7 million.
For our largest accounts, dedicated sales personnel work with the end customer to ensure that our solutions fully address the end customer’s timing needs. Our smaller customers can select the optimum timing solution for 45 Table of Contents their needs by working directly with our sales personnel or our distributors or by shopping on our online store, SiTimeDirect ™ .
We leverage our global network of distributors to address the broad set of end markets we serve. For our largest accounts, dedicated sales personnel work with the end customer to ensure that our solutions fully address the end customer’s timing needs.
Key Factors Affecting Our Performance Customer Orders and Forecasts Because our sales are made pursuant to standard purchase orders, orders may be cancelled, reduced, or rescheduled with little or no notice and without penalty. Cancellations of orders could result in the loss of anticipated sales without allowing us sufficient time to reduce our inventory and operating expenses.
Cancellations of orders could result in the loss of anticipated sales without allowing us sufficient time to reduce our inventory and operating expenses. In addition, changes in forecasts or the timing of orders from customers exposes us to the risks of inventory shortages or excess inventory.
We cannot predict the duration or timing of any downturn or upturn in the semiconductor industry. 47 Table of Contents Results of Operations The following table summarizes our results of operations for the periods presented.
Results of Operations The following table summarizes our results of operations for the periods presented.
Of the decrease, 6% was mainly due to lower sales volume causing an unfavorable absorption of our manufacturing overhead costs and the additional 2% decline was contributed by lower ASP for the year ended December 31, 2023. Gross margin may fluctuate from time to time due to a variety of factors.
Gross margin was lower by 5% in the year ended December 31, 2024 compared to the same period in 2023. The decrease was mainly due to higher amortization from acquired intangibles by 6%, partially offset by lower stock-based compensation costs by 1%. Gross margin may fluctuate from time to time due to a variety of factors.
We have a deep understanding of mechanical, electrical, and thermal properties of materials, which is a key requirement for developing our proprietary MEMS processes. To maximize MEMS first-silicon success, we have also developed our own MEMS simulation tools.
To maximize MEMS first-silicon success, we have also developed our own MEMS simulation tools.
We measure revenue based on the amount of consideration we expect to be entitled to in exchange for products. Year Ended December 31, Change 2023 vs 2022 2023 2022 2021 $ % (in thousands except percentage) Revenue $ 143,993 $ 283,605 $ 218,808 $ (139,612) (49 %) Revenue decreased by $139.6 million, or 49%, for 2023 compared to 2022.
Year Ended December 31, Change 2024 vs 2023 2024 2023 2022 $ % (in thousands except percentage) Revenue $ 202,697 $ 143,993 $ 283,605 $ 58,704 41 % 48 Table of Contents Revenue increased by $58.7 million, or 41%, for 2024 compared to 2023.
Our products have been designed into over 300 applications across our target markets, including communications, datacenter and enterprise, automotive, industrial, aerospace, mobile, IoT and consumer. Our current solutions include various types of oscillators, as well as clock integrated circuits ("ICs"), and resonators.
We provide Precision Timing solutions that are differentiated by high performance, high resilience, and high reliability, along with programmability, small size, and low power consumption. Our products have been designed into over 300 applications across our target markets, including communications, datacenter and enterprise, automotive, industrial, aerospace, mobile, IoT, and consumer.
Our analog/mixed-signal die are developed using industry-standard processes and deliver high levels of performance using programmable phase-locked loops, temperature sensors, regulators, data converters, drivers and other building blocks. In 2023, we advanced our technology and expanded our product portfolio, including with the closing of an agreement with Aura Semiconductor Pvt.
Our analog/mixed-signal die are developed using industry-standard processes and deliver high levels of performance using programmable PLLs, temperature sensors, regulators, data converters, drivers and other building blocks. Unlike most clock IC vendors, we do not rely on quartz vendors to provide the quartz resonator clock reference that is required for their clock ICs to function.
Ltd. and certain of its affiliated entities (together, “Aura”) in December 2023 for the acquisition of certain assets and an exclusive license to certain intellectual property from Aura. The agreement provides that the intellectual property underlying the license from Aura will be delivered on an ongoing and periodic basis through July 2025.
In December 2023, we acquired clocking products through the acquisition of certain assets and the exclusive license to certain intellectual property from Aura Semiconductor Pvt. Ltd. and certain of its affiliated entities (together, "Aura") relating to Aura's timing business and clock products that significantly expands our presence within the clocking market.
Acquisition related costs Acquisition related costs include legal, regulatory, and other costs incurred towards the acquisition closed during the fiscal year. We expect these costs to be dependent on the occurrence of future acquisitions and to be non-recurring. The acquisition related costs incurred for the year ended December 31, 2023 were related to the completion of the Aura transaction.
Acquisition related costs Acquisition related costs include legal, regulatory, consulting, and other costs incurred towards the acquisition closed during the year ended December 31, 2023 and changes in the fair value of the sales-based earnout liability and interest accretion related to the acquisition consideration payable.
We sell our products primarily through distributors, who in turn sell to our end customers. We also sell products directly to some of our end customers. We leverage our global network of distributors to address the broad set of end markets we serve.
SiTime is now a key provider of all differentiated products in timing – oscillators, clocks, and resonators combined with depth in engineering expertise in Precision Timing solutions. We sell our products primarily through distributors, who in turn sell to our end customers. We also sell products directly to some of our end customers.
Historically, our revenue has been substantially delivered from sales of oscillator systems across our target end markets. In addition to oscillators, we have expanded our product portfolio to include clock IC and timing sync solutions. We seek to expand our presence in our end markets across all product categories.
We believe that the total timing market is approximately $10 billion in size. Since our founding, we have focused on transforming this market with compelling solutions that solve difficult timing problems. Historically, our revenue has been substantially delivered from sales of oscillator systems across our target end markets.
Gross profit decreased $104.2 million mainly from lower revenue. This decrease was partially offset by lower other manufacturing and overhead costs of $3.3 million. Gross margin was lower by 8% in the year ended December 31, 2023 compared to the same period in 2022.
Gross profit increased $41.2 million mainly from higher revenue. This increase was partially offset by higher amortization from acquired intangibles of $11.6 million, and higher other manufacturing and overhead costs of $6.8 million, which primarily consists of depreciation and amortization, freight and inventory reserves.