Biggest changeIn 2023 , 2022 , and 2021 , ATX accounted for 15.6%, 47.3%, and 25.6% of our revenue, Digicomm accounted for 11.3%, 0%, and 0% of our revenue, and a U.S. based large CATV equipment provider accounted for 1.3%, 1.7% and 3.3% of our revenue, respectively. 28 Table of Contents In 2023 , our decrease of revenue of 2.3% over the prior-year was driven primarily by decreased demand in the CATV market, which we believe is due to reductions in purchasing of older generation DOCSIS 3.1 equipment, which was nearly offset by increased demand for our internet datacenter products, which we believe is arising from demand for products necessary for new datacenter construction along with datacenter upgrades to enable new technologies like Artificial Intelligence (AI).
Biggest changeIn 2024 , 2023 , and 2022 , Digicomm accounted for 34.1%, 11.3% and 0% of our revenue. 30 Table of Contents In 2024 , our increase of revenue of 14.6% over the prior-year was driven primarily by increased demand for our internet data center products, which we believe is arising from demand for products necessary for new data center construction along with data center upgrades to enable new technologies like AI, and the demand recovery in the CATV market, offset by the lack of revenue from Non-Recurring Engineering ("NRE") projects.
We derive a significant portion of our revenue from our top ten customers, and we anticipate that we will continue to do so for the foreseeable future.
We derive a significant portion of our revenue from our top ten customers, and we anticipate that we will continue to do so for the foreseeable future.
In designing products for our customers, we begin with the fundamental building blocks of lasers and laser components. From these foundational products, we design and manufacture a wide range of products to meet our customers’ needs and specifications, and such products differ from each other by their end market, intended use and level of integration.
In designing products for our customers, we typically begin with the fundamental building blocks of lasers and laser components. From these foundational products, we design and manufacture a wide range of products to meet our customers’ needs and specifications, and such products differ from each other by their end market, intended use and level of integration.
The Company has also agreed to reimburse the Sales Agent for certain specified expenses in connection with the registration of Shares under state blue sky laws and any filing with, and clearance of the offering by, the Financial Industry Regulatory Authority Inc., not to exceed $10,000 in the aggregate, and any associated application fees incurred.
The Company also agreed to reimburse the Sales Agent for certain specified expenses in connection with the registration of Shares under state blue sky laws and any filing with, and clearance of the offering by, the Financial Industry Regulatory Authority Inc., not to exceed $10,000 in the aggregate, and any associated application fees incurred.
However, there is no guarantee that we may increase selling prices or reduce costs to fully mitigate the effect of inflation on our costs, which may adversely impact our sales margins and profitability. 39 Table of Contents Critical Accounting Policies and Estimates Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with U.S.
However, there is no guarantee that we may increase selling prices or reduce costs to fully mitigate the effect of inflation on our costs, which may adversely impact our sales margins and profitability. 41 Table of Contents Critical Accounting Policies and Estimates Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with U.S.
Our gross margin varies quarter to quarter and varies primarily due to the product mix in a particular quarter, as well as from the level of manufacturing efficiencies, production yields (particularly in the laser chip fabrication process) and overall supply costs. 33 Table of Contents Results of Operations The following table sets forth our results of operations for the periods presented as a percentage of our revenue for those periods.
Our gross margin varies quarter to quarter and varies primarily due to the product mix in a particular quarter, as well as from the level of manufacturing efficiencies, production yields (particularly in the laser chip fabrication process) and overall supply costs. 35 Table of Contents Results of Operations The following table sets forth our results of operations for the periods presented as a percentage of our revenue for those periods.
We believe our close coordination with our customers regarding their future product requirements enhances the efficiency of our research and development expenditures. 30 Table of Contents Discussion of Financial Performance Revenue We generate revenue through the sale of our products to equipment providers for the internet data center, CATV, telecom, FTTH and other markets.
We believe our close coordination with our customers regarding their future product requirements enhances the efficiency of our research and development expenditures. 32 Table of Contents Discussion of Financial Performance Revenue We generate revenue through the sale of our products to equipment providers for the internet data center, CATV, telecom, FTTH and other markets.
We expect that our income taxes will vary in relation to our profitability and the geographic distribution of our profits. In 2023, 2022 and 2021 our effective tax rate was 0% . Our wholly owned subsidiary, Global Technology, Inc., has received preferential tax concessions in China as a national high-tech enterprise.
We expect that our income taxes will vary in relation to our profitability and the geographic distribution of our profits. In 2024, 2023 and 2022 our effective tax rate was 0% . Our wholly owned subsidiary, Global Technology, Inc., has received preferential tax concessions in China as a national high-tech enterprise.
On December 5, 2023, the Company issued approximately $80.2 million aggregate principal amount of 5.250% convertible senior notes due 2026 (the “ 2026 Notes ”), and on the same day consummated various separate, privately negotiated exchange agreements with certain holders of its 2024 Notes to exchange or repurchase approximately $80.2 million principal amount of the 2024 Notes for aggregate consideration consisting of approximately $81.1 million in cash, which included accrued interest on the 2024 Notes, and approximately 466,368 shares of the Company's common stock, par value $0.001 per share.
On December 5, 2023, the Company issued approximately $80.2 million aggregate principal amount of 5.250% convertible senior notes due 2026 (the “2026 Notes”), and on the same day consummated various separate, privately negotiated exchange agreements with certain holders of its 2024 Notes to exchange or repurchase approximately $80.2 million principal amount of the 2024 Notes for aggregate consideration consisting of approximately $81.1 million in cash, which included accrued interest on the 2024 Notes, and approximately 466,368 shares of the Company's common stock, par value $0.001 per share.
We base those internal sales upon established transfer pricing methodologies. However, we eliminate all of those internal sales, and cost of goods sold transactions, to arrive at total revenue and cost of goods sold on a consolidated basis. 31 Table of Contents We have a global set of suppliers to help balance considerations related to product availability, quality and cost.
We base those internal sales upon established transfer pricing methodologies. However, we eliminate all of those internal sales, and cost of goods sold transactions, to arrive at total revenue and cost of goods sold on a consolidated basis. 33 Table of Contents We have a global set of suppliers to help balance considerations related to product availability, quality and cost.
Research and development costs consist of R&D work orders, R&D material usage and other project related costs related to 100 Gbps, 200/400 Gbps data center products, DOCSIS 4.0 capable CATV products, including 1.8 GHz-capable amplifier products, and other new product development, and depreciation expense resulting from R&D equipment investments.
Research and development costs consist of R&D work orders, R&D material usage and other project related costs related to 100 Gbps, 200/400/800/1600 Gbps data center products, DOCSIS 4.0 capable CATV products, including 1.8 GHz-capable amplifier products, and other new product development, and depreciation expense resulting from R&D equipment investments.
We expect a similar portion of our sales to be denominated in foreign currencies in 2024. Cost of goods sold and gross margin Our cost of goods sold is impacted by variances arising from changes in yields and production volume, as well as increases or decreases in the cost of raw materials used in production.
We expect a similar portion of our sales to be denominated in foreign currencies in 2025. Cost of goods sold and gross margin Our cost of goods sold is impacted by variances arising from changes in yields and production volume, as well as increases or decreases in the cost of raw materials used in production.
In the future, we expect general and administrative expense to increase on a dollar basis but to decline as a percentage of revenue, to the extent that our revenue increases over time. 32 Table of Contents Other income (expense) Interest income consists of income earned on our cash, cash equivalents and short-term investments.
In the future, we expect general and administrative expense to increase on a dollar basis but to decline as a percentage of revenue, to the extent that our revenue increases over time. 34 Table of Contents Other income (expense) Interest income consists of income earned on our cash, cash equivalents and short-term investments.
Upon delivery of a placement notice and subject to the terms and conditions of the Agreement, sales, if any, of the Shares will be made through the Sales Agent in transactions that are deemed to be “at the market” offerings as defined in Rule 415 of the Securities Act of 1933, as amended (the "Securities Act"), including sales made through the facilities of the Nasdaq Global Market, the principal trading market for the Company’s common stock, on any other existing trading market for the Company’s common stock, to or through a market maker or as otherwise agreed by the Company and the Sales Agent.
Upon delivery of a placement notice and subject to the terms and conditions of the Agreement, sales of the Shares were made through the Sales Agent in transactions that are deemed to be “at the market” offerings as defined in Rule 415 of the Securities Act of 1933, as amended (the "Securities Act"), including sales made through the facilities of the Nasdaq Global Market, the principal trading market for the Company’s common stock, on any other existing trading market for the Company’s common stock, to or through a market maker or as otherwise agreed by the Company and the Sales Agent.
Additionally, we pay commissions to third parties on certain product lines and identified customers, which also amounted to less than one percent of our revenue in 2023, 2022 and 2021 . As such, our sales and marketing expense does not directly increase with revenue.
Additionally, we pay commissions to third parties on certain product lines and identified customers, which also amounted to less than one percent of our revenue in 2024, 2023 and 2022 . As such, our sales and marketing expense does not directly increase with revenue.
We consider the likelihood of possible outcomes in determining the best estimate for the fair value of the assets. We did not record any asset impairment charges in 2023, 2022 and 2021. Valuation of inventories Inventories are stated at the lower of cost (average-cost method) or net realizable value.
We consider the likelihood of possible outcomes in determining the best estimate for the fair value of the assets. We did not record any asset impairment charges in 2024, 2023 and 2022. Valuation of inventories Inventories are stated at the lower of cost (average-cost method) or net realizable value.
Factors that could cause or contribute to such differences include, but are not limited to, those discussed in “Risk Factors.” This section generally discusses the results of our operations for the year ended December 31, 2023 compared to the year ended December 31, 2022.
Factors that could cause or contribute to such differences include, but are not limited to, those discussed in “Risk Factors.” This section generally discusses the results of our operations for the year ended December 31, 2024, compared to the year ended December 31, 2023.
Our effective tax rate is affected by recurring items, such as tax rates in state and foreign jurisdictions and the relative amounts of income we earn in those jurisdictions. We recorded no federal tax expense for the years ended December 31, 2023 and December 31, 2022.
Our effective tax rate is affected by recurring items, such as tax rates in state and foreign jurisdictions and the relative amounts of income we earn in those jurisdictions. We recorded no federal tax expense for the years ended December 31, 2024 and December 31, 2023.
We expect continued sales of our 40 Gbps and 100 Gbps products in 2024, and we expect that sales of 400 Gbps products will likely exceed sales of 100 Gbps products later in 2024. However, quarter-to-quarter results may show considerable variability as is usual in a period of technology transition.
We expect continued sales of our 40 Gbps and 100 Gbps products in 2025, and we expect that sales of 400 Gbps products will likely exceed sales of 100 Gbps products later in 2025. However, quarter-to-quarter results may show considerable variability as is usual in a period of technology transition.
We compensate our sales staff through base salary and commissions, with base salary being the largest component of overall compensation. Total sales commissions to employees amounted to less than one percent of our revenue in 2023, 2022 and 2021 .
We compensate our sales staff through base salary and commissions, with base salary being the largest component of overall compensation. Total sales commissions to employees amounted to less than one percent of our revenue in 2024, 2023 and 2022 .
Subject to the terms and conditions of the Agreement, the Sales Agent will use its commercially reasonable efforts to sell Shares on the Company’s behalf up to the designated amount specified in the placement notice.
Subject to the terms and conditions of the Agreement, the Sales Agent would use its commercially reasonable efforts to sell Shares on the Company’s behalf up to the designated amount specified in the placement notice.
During the years ended December 31, 2023, 2022 and 2021, we recorded excess and obsolete inventory reserve charges of $8.7 million, $4.9 million, and $3.9 million, respectively. For the years December 2023, 2022 and 2021, the direct inventory write-offs related to scrap, discontinued products and damaged inventories were $10.6 million, $10.4 million, and $16.8 million, respectively.
During the years ended December 31, 2024, 2023 and 2022, we recorded excess and obsolete inventory reserve charges of $3.4 million, $8.7 million and $4.9 million, respectively. For the years ended December 31, 2024, 2023 and 2022, the direct inventory write-offs related to scrap, discontinued products and damaged inventories were $3.8 million, $10.6 million and $10.4 million, respectively.
The Company agreed to indemnify the Sales Agent against certain liabilities, including liabilities under the Securities Act, or to contribute to payments that the Sales Agent may be required to make because of any of those liabilities.
The Company agreed to indemnify the Sales Agent against certain liabilities, including liabilities under the Securities Act, or to contribute to payments that the Sales Agent could be required to make because of any of those liabilities.
In 2023, 2022 and 2021 , we had 6, 12, and 20 design wins, respectively. We define a design win as the successful completion of the evaluation stage, where our customer has tested our product, verified that our product meets substantially all of their requirements and has informed us that they intend to purchase the product from us.
In 2024, 2023 and 2022, we had 8, 6, and 12 design wins, respectively. We define a design win as the successful completion of the evaluation stage, where our customer has tested our product, verified that our product meets substantially all of their requirements and has informed us that they intend to purchase the product from us.
The details of the shares of common stock sold through the ATM Offering through December 31, 2023 are as follows (in thousands, except shares and weighted average per share price): Distribution Agent Month Weighted Average Per Share Price Number of Shares Sold Net Proceeds Compensation to Distribution Agent Raymond James & Associates, Inc.
The details of the shares of common stock sold through the First ATM Offering and the Second ATM Offering through December 31, 2024 are as follows (in thousands, except shares and weighted average per share price): Distribution Agent Month Weighted Average Per Share Price Number of Shares Sold Net Proceeds Compensation to Distribution Agent Raymond James & Associates, Inc.
Net cash used in operating activities consisted of our net loss of $56.0 million, after the exclusion of non-cash items of $42.1 million, a decrease in accounts receivable from our customers of $14.5 million and a decrease in our inventory of $6.8 million, contributing to the cash increases.
In 2023, net cash used in operating activities was $7.9 million. Net cash used in operating activities consisted of our net loss of $56.0 million, after the exclusion of non-cash items of $42.1 million, a decrease in accounts receivable from our customers of $14.5 million and a decrease in our inventory of $6.8 million, contributing to the cash increases.
For a discussion of the year ended December 31, 2022 compared to the year ended December 31, 2021, please refer to Part II, Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for the year ended December 31, 2022, as amended.
For a discussion of the year ended December 31, 2023 compared to the year ended December 31, 2022, please refer to Part II, Item 7, "Management's Discussion and Analysis of Financial Condition and Results of Operations" in our Annual Report on Form 10-K for the year ended December 31, 2023.
Recent Accounting Pronouncements See Note B of our Consolidated Financial Statements for a description of recent accounting pronouncements. 40 Table of Contents
Recent Accounting Pronouncements See Note B of our Consolidated Financial Statements for a description of recent accounting pronouncements. 42 Table of Contents
As of December 31, 2023 , our cash, cash equivalents, restricted cash and short-term investments totaled $55.1 million. Cash and cash equivalents are held for working capital purposes and are invested primarily in money market or time deposit funds.
As of December 31, 2024 , our cash, cash equivalents, restricted cash and short-term investments totaled $79.1 million. Cash and cash equivalents are held for working capital purposes and are invested primarily in money market or time deposit funds.
Years ended December 31, 2023 2022 2021 Revenue, net 100.0 % 100.0 % 100.0 % Cost of goods sold 72.9 % 84.9 % 82.2 % Gross profit 27.1 % 15.1 % 17.8 % Operating expenses Research and development 16.5 % 16.3 % 19.5 % Sales and marketing 5.1 % 4.4 % 5.2 % General and administrative 24.5 % 20.9 % 20.0 % Total operating expenses 46.1 % 41.6 % 44.7 % Loss from operations (19.0 )% (26.5 )% (26.8 )% Interest and other expense, net (6.7 )% (3.3 )% 1.2 % Loss before income taxes (25.7 )% (29.8 )% (25.6 )% Income tax expense 0.0 % 0.0 % 0.0 % Net loss (25.7 )% (29.8 )% (25.6 )% Comparison of Years Ended December 31, 2023 and 2022 Revenue We generate revenue through the sale of our products to equipment providers and network operators for the internet data center, CATV, telecom, FTTH and other markets.
Years ended December 31, 2024 2023 2022 Revenue, net 100.0 % 100.0 % 100.0 % Cost of goods sold 75.2 % 72.9 % 84.9 % Gross profit 24.8 % 27.1 % 15.1 % Operating expenses Research and development 22.0 % 16.5 % 16.3 % Sales and marketing 7.3 % 5.1 % 4.4 % General and administrative 23.9 % 24.5 % 20.9 % Total operating expenses 53.2 % 46.1 % 41.6 % Loss from operations (28.4 )% (19.0 )% (26.5 )% Interest and other expense, net (46.4 )% (6.7 )% (3.3 )% Loss before income taxes (74.9 )% (25.7 )% (29.8 )% Income tax expense 0.0 % 0.0 % 0.0 % Net loss (74.9 )% (25.7 )% (29.8 )% Comparison of Years Ended December 31, 2024 and 2023 Revenue We generate revenue through the sale of our products to equipment providers and network operators for the internet data center, CATV, telecom, FTTH and other markets.
Property will be transferred from construction in progress to building and improvement at that time. Future liquidity needs We believe that our existing cash and cash equivalents, cash flows from our operating activities, and available credit will be sufficient to meet our anticipated cash needs for the next 12 months.
Property has been transferred from construction in progress to building and improvement in 2024. Future liquidity needs We believe that our existing cash and cash equivalents, cash flows from our operating activities, and available credit will be sufficient to meet our anticipated cash needs for the next 12 months.
As of December 31, 2023, construction of the building shell is complete, and approximately $27.4 million of this total cost has been paid and the remaining portion will be paid in yearly installments for three years after final inspection.
As of December 31, 2024, construction of the building shell is complete and the first floor has been used, and approximately $27.4 million of this total cost has been paid and the remaining portion will be paid in yearly installments for three years after final inspection.
In 2023, our financing activities provided $40.6 million in cash. This increase in cash was primarily due to $69.0 million of net proceeds from our ATM Offering , $76.1 million from the 2026 Notes, offset by the repayment of 2024 Notes amounting to $80.2 million and repayment of line of credit borrowings of $34.2 million.
This increase in cash was primarily due to $69.0 million of net proceeds from our ATM Offering , $76.1 million from the 2026 Notes, offset by the repayment of 2024 Notes amounting to $80.2 million and repayment of line of credit borrowings of $34.2 million. In 2022, our financing activities provided $10.8 million in cash.
We anticipate additional expenses for building improvements to the factory and we are in the process of evaluating the timing of these expenditures and obtaining bids for any such work. Based on forecasts, we believe the factory will be placed in service in the second half of 2024 after the construction is completed for the building interior.
We anticipate additional expenses for building improvements to the factory and we are in the process of evaluating the timing of these expenditures and obtaining bids for any such work. Based on forecasts, we believe the factory will be placed in full service in the year 2025 after the construction is completed for the building interior.
In the placement notice, the Company will designate the maximum number of Shares to be sold through the Sales Agent, the time period during which sales are requested to be made, the minimum price for the Shares to be sold, and any limitation on the number of Shares that may be sold in any one day.
In the placement notice, the Company would designate the maximum number of Shares to be sold through the Sales Agent, the time period during which sales were requested to be made, the minimum price for the Shares to be sold, and any limitation on the number of Shares that could be sold in any one day.
In the telecom market, we benefit from deployment of new high-speed fiber-optic networks by telecom network operators, including 5G networks. In 2023, 2022 and 2021 , our revenue was $217.6 million, $222.8 million, and $211.6 million, and our gross margin was 27.1%, 15.1%, and 17.8%, respectively.
In the telecom market, we benefit from deployment of new high-speed fiber-optic networks by telecom network operators, including 5G networks. In 2024, 2023 and 2022 , our revenue was $249.4 million, $217.6 million and $222.8 million, and our gross margin was 24.8%, 27.1% and 15.1%, respectively.
The income tax expense in the years ended December 31, 2023 and December 31, 2022 was primarily related to the state tax provision and the recording of a valuation allowance on our deferred tax assets. 36 Table of Contents Liquidity and Capital Resources As of December 31, 2023 , we had $22.5 million of unused borrowing capacity from all of our loan agreements.
The income tax expense in the years ended December 31, 2024 and December 31, 2023 was primarily related to the state tax provision and the recording of a valuation allowance on our deferred tax assets. 38 Table of Contents Liquidity and Capital Resources As of December 31, 2024 , we had $24.8 million of unused borrowing capacity from all of our loan agreements.
In China, we have a revolving line of credit with Shanghai Pudong Development Bank Co., Ltd and a credit facility with China Zheshang Bank Co., Ltd. for our China subsidiary, Global. As of December 31, 2023 , we had $22.5 million of unused borrowing capacity.
In China, we have a revolving line of credit with Shanghai Pudong Development Bank Co., Ltd and a credit facility with China Zheshang Bank Co., Ltd. for our China subsidiary, Global. As of December 31, 2024 , we had $24.8 million of unused borrowing capacity.
In the years 2023 , 2022 , and 2021 , the percentage of employees in our China factory who resigned or were terminated during Q1, relative to the average number of employees during the quarter was 53.8 %, 66.1%, and 35.9%, respectively.
In the years 2024 , 2023 , and 2022 , the percentage of employees in our China factory who resigned or were terminated during Q1, relative to the average number of employees during the quarter was 17.2%, 53.8% and 66.1%, respectively.
Similar to revenue, our gross margins can fluctuate materially depending on a variety of factors including average selling price changes, product mix, global supply chain situation, raw material cost reduction or increase, manufacturing utilization rate and changes in manufacturing efficiency.
Similar to revenue, our gross margins can fluctuate materially depending on a variety of factors including average selling price changes, product mix, global supply chain situation, raw material cost reduction or increase, manufacturing utilization rate and changes in manufacturing efficiency. We currently expect to see material revenue from 800G products in 2025.
In 2022, our financing activities provided $10.8 million in cash. This increase in cash was due to $12.2 million of net proceeds from line of credit borrowing, $5.1 million of net proceeds from bank acceptance payable and $1.2 million of net proceeds from our ATM Offering.
This increase in cash was due to $12.2 million of net proceeds from line of credit borrowing, $5.1 million of net proceeds from bank acceptance payable and $1.2 million of net proceeds from our ATM Offering.
Benefit (provision) for income taxes Years ended December 31, 2023 2022 Change (in thousands, except percentages) Benefit (provision) for income taxes $ (9 ) $ (1 ) (8 ) 800.0 % Our income tax provision consists of U.S. income tax, state taxes, and Taiwan and China income tax recorded during the periods.
Benefit (provision) for income taxes Years ended December 31, 2024 2023 Change (in thousands, except percentages) Benefit (provision) for income taxes $ (2 ) $ (9 ) 7 (77.8 )% Our income tax provision consists of U.S. income tax, state taxes, and Taiwan and China income tax recorded during the periods.
We have grown our annual revenue at a compound annual growth rate, or CAGR, of 10.7% between 2013 and 2023 . In the years ended December 31, 2023, 2022 and 2021 , we had net loss of $56.0 million, $66.4 million , and $54.2 million, respectively.
We have grown our annual revenue at a compound annual growth rate, or CAGR, of 6.7% between 2014 and 2024 . In the years ended December 31, 2024, 2023 and 2022 , we had net loss of $186.7 million, $56.0 million and $66.4 million , respectively.
On December 5, 2023, the Company issued $80.2 million of 5.250% convertible senior notes due 2026. The 2026 Notes will mature on December 15, 2026, unless earlier repurchased, redeemed or converted in accordance with their terms.
On December 5, 2023, the Company issued $80.2 million of 5.250% convertible senior notes due 2026. The 2026 Notes will mature on December 15, 2026, unless earlier repurchased, redeemed or converted in accordance with their terms. As of December 31, 2024, the outstanding principal amount remaining on the 2026 Notes is $3.5 million.
On the basis of this evaluation, as of December 31, 2023, a valuation allowance of $78.1 million has been recorded related to deferred tax assets to recognize only the portion of the deferred tax assets that are more likely than not to be realized.
On the basis of this evaluation, as of December 31, 2024, a valuation allowance of $94.8 millio n has been recorded related to deferred tax assets to recognize only the portion of the deferred tax assets that are more likely than not to be realized.
For the year ended December 31, 2023 , 19.9% of our total revenue was manufactured at our China-based subsidiary, with $3.8 million denominated in RMB and 66% of our total revenue was from products manufactured at our Taiwan-based facility, with no revenue denominated in NT dollars.
For the year ended December 31, 2024 , 44.8% of our total revenue was manufactured at our China-based subsidiary, with $0.8 million denominated in RMB and 50.8% of our total revenue was from products manufactured at our Taiwan-based facility, with no revenue denominated in NT dollars.
At December 31, 2023 and 2022 , our accumulated deficit was $265.1 million and $209.1 million, respectively. In 2023 , we earned 64.9% of our total revenue from the internet data center market and 27.5% of our total revenue from the CATV market.
At December 31, 2024 and 2023 , our accumulated deficit was $451.9 million and $265.1 million, respectively. In 2024 , we earned 59.5% of our total revenue from the internet data center market and 35.2% of our total revenue from the CATV market.
In 2023 , revenue from the internet data center market, CATV market, telecom market and FTTH markets provided 64.9%, 27.5%, 6.4%, and 0.0% of our revenue, respectively, compared to 34.6%, 53%, 11.1%, and 0.1% of our 2022 revenue, respectively.
In 2024 , revenue from the internet data center market, CATV market, telecom market, FTTH and other markets provided 59.5%, 35.2%, 4.4% and 0.9% of our revenue, respectively, compared to 64.9%, 27.5%, 6.4% and 1.2% of our 2023 revenue, respectively.
The following chart provides the revenue contribution from each of the markets we serve for the years 2023, 2022 and 2021 , as well as the corresponding percentage of our total revenue for each period (in thousands, except percentages): Years ended December 31, Market 2023 2022 2021 CATV $ 59,942 $ 118,169 $ 94,266 Data Center 141,213 77,094 97,461 Telecom 13,831 24,727 16,247 FTTH 56 129 957 Other 2,604 2,699 2,634 Total $ 217,646 $ 222,818 $ 211,565 Percentage of Revenue CATV 27.5 % 53.0 % 44.6 % Data Center 64.9 % 34.6 % 46.1 % Telecom 6.4 % 11.1 % 7.7 % FTTH 0.0 % 0.1 % 0.5 % Other 1.2 % 1.2 % 1.2 % Total Revenue 100 % 100 % 100 % In 2023, 2022 and 2021 , our top ten customers represented 92.7%, 87.2%, and 84.7% of our revenue, respectively.
The following chart provides the revenue contribution from each of the markets we serve for the years 2024, 2023 and 2022 , as well as the corresponding percentage of our total revenue for each period (in thousands, except percentages): Years ended December 31, Market 2024 2023 2022 Data Center $ 148,525 $ 141,213 $ 77,094 CATV 87,713 59,942 118,169 Telecom 10,980 13,831 24,727 FTTH 3 56 129 Other 2,144 2,604 2,699 Total $ 249,365 $ 217,646 $ 222,818 Percentage of Revenue Data Center 59.5 % 64.9 % 34.6 % CATV 35.2 % 27.5 % 53.0 % Telecom 4.4 % 6.4 % 11.1 % FTTH 0.0 % 0.0 % 0.1 % Other 0.9 % 1.2 % 1.2 % Total Revenue 100 % 100 % 100 % In 2024, 2023 and 2022 , our top ten customers represented 95.0%, 92.7% and 87.2% of our revenue, respectively.
In the years ended December 31, 2023 and 2022 , our top ten customers represented 92.7% and 87.2% of our revenue, respectively.
In the years ended December 31, 2024 and 2023 , our top ten customers represented 95.0% and 92.7% of our revenue, respectively.
In 2021, net cash used in investing activities was $10.5 million. The net cash used consisted of spending on purchase and prepaid of additional property, plant and equipment of $10.2 million. Financing activities Our financing activities have historically consisted primarily of proceeds from the issuance of common stock and arrangements with various commercial lenders.
The net cash used consisted of spending on purchase and prepaid of additional property, plant and equipment of $3.7 million and purchase of intangible assets of $0.5 million. Financing activities Our financing activities have historically consisted primarily of proceeds from the issuance of common stock and arrangements with various commercial lenders.
Based on customer forecasts and order backlog we believe that this elevated datacenter demand will likely continue into 2024. We also believe that sales in our CATV market will increase in 2024 as a result of DOCSIS 4.0 products which we plan to release in 2024.
Based on customer forecasts and order backlog we believe that this elevated data center demand will likely continue into 2025. We also believe that sales in our CATV market will increase in 2025 as a result of further adoption of our DOCSIS 4.0 products.
On March 24, 2023, we entered into an Equity Distribution Agreement (the "Agreement") with Raymond James & Associates (the "Sales Agent") pursuant to which the Company may issue and sell shares of the Company’s common stock, par value $0.001 per share (the "Shares") having an aggregate offering price of up to $35 million (the "ATM Offering"), from time to time through the Sales Agent.
On November 7, 2024, we entered into another Equity Distribution Agreement (the "Second ATM Agreement") with the Sales Agent pursuant to which the Company could issue and sell shares of the Company's common stock, par value $0.001 per share (the "Shares") having an aggregate offering price of up to $55 million (the "Second ATM Offering"), from time to time through the Sales Agent.
Also refer to Note L “Convertible Senior Notes” to the consolidated financial statements for further discussion of the 2026 Notes. 37 Table of Contents The table below sets forth selected cash flow data for the periods presented (in thousands): Years ended December 31, 2023 2022 2021 Net cash used in operating activities $ (7,929 ) $ (14,022 ) $ (11,644 ) Net cash used in investing activities (14,761 ) (3,834 ) (10,546 ) Net cash provided by financing activities 40,578 10,753 14,087 Effect of exchange rates on cash and cash equivalents 1,622 1,553 (876 ) Net increase(decrease) in cash $ 19,510 $ (5,550 ) $ (8,979 ) Operating activities In 2023, net cash used in operating activities was $7.9 million.
Also refer to Note L "Convertible Senior Notes" to the consolidated financial statements for further discussion of the 2030 Notes. 39 Table of Contents The table below sets forth selected cash flow data for the periods presented (in thousands): Years ended December 31, 2024 2023 2022 Net cash used in operating activities $ (69,526 ) $ (7,929 ) $ (14,022 ) Net cash used in investing activities (50,697 ) (14,761 ) (3,834 ) Net cash provided by financing activities 142,179 40,578 10,753 Effect of exchange rates on cash and cash equivalents 2,080 1,622 1,553 Net increase(decrease) in cash $ 24,036 $ 19,510 $ (5,550 ) Operating activities In 2024, net cash used in operating activities was $69.5 million.
Compared to other major economies in the world, China has a stable level of inflation, which has not had a significant impact on our sales or operating results.
We cannot be sure when or if prices will return to pre-pandemic levels. Compared to other major economies in the world, China has a stable level of inflation, which has not had a significant impact on our sales or operating results.
These cash decreases were offset by a decrease of notes receivable of $7.8 million, decrease in inventory of $1.2 million, increase in accounts payable to our vendors of $13.0 million and increase in accrued liability of $5.3 million. In 2021, net cash used in operating activities was $11.6 million.
These cash decreases were offset by a decrease of notes receivable of $7.8 million, decrease in inventory of $1.2 million, increase in accounts payable to our vendors of $13.0 million and increase in accrued liability of $5.3 million. Investing activities Our investing activities consisted primarily of capital expenditures and purchases of intangible assets.
We believe that diversifying our customer base is critical for our future success, since reliance on a small number of key customers makes our ability to forecast future results dependent upon the accuracy of the forecasts we receive from those key customers. 34 Table of Contents Cost of goods sold and gross margin Years ended December 31, 2023 2022 Change % of % of Amount Revenue Amount Revenue Amount % (in thousands, except percentages) Cost of goods sold $ 158,725 72.9 % $ 189,191 84.9 % $ (30,466 ) (16.1 )% Gross margin 58,921 27.1 % 33,627 15.1 % 25,294 75.2 % Cost of goods sold decreased by $30.5 million, or 16.1%, from 2022 to 2023 , primarily due to a 24% decrease from direct material costs.
We believe that diversifying our customer base is critical for our future success, since reliance on a small number of key customers makes our ability to forecast future results dependent upon the accuracy of the forecasts we receive from those key customers. 36 Table of Contents Cost of goods sold and gross margin Years ended December 31, 2024 2023 Change % of % of Amount Revenue Amount Revenue Amount % (in thousands, except percentages) Cost of goods sold $ 187,565 75.2 % $ 158,725 72.9 % $ 28,840 18.2 % Gross margin 61,800 24.8 % 58,921 27.1 % 2,879 4.9 % Cost of goods sold increased by $28.8 million, or 18.2%, from 2023 to 2024 , The cost increase in 2024 is due to the increase in direct material and direct labor cost because of revenue growth in 2024.
Nov 2023 12.572 2,068 25,473 520 Total 7,808 $ 69,057 $ 1,410 Note Offering On March 5, 2019, the Company issued $80.5 million of 5% convertible senior notes due 2024, bearing interest at a rate of 5% per year maturing on March 15, 2024 (the "2024 Notes"), unless earlier repurchased, redeemed or converted in accordance with their terms.
Note Offerings On March 5, 2019, the Company issued $80.5 million of 5% convertible senior notes due 2024, bearing interest at a rate of 5% per year maturing on March 15, 2024 (the "2024 Notes"), unless earlier repurchased, redeemed or converted in accordance with their terms.
Further information regarding our notes payable is provided in Note K Notes Payable and Long-Term Debt in the Notes to Consolidated Financial Statements in this Form 10-K. We also have a fixed-rate convertible senior note.
As of December 31, 2024, our notes payable and debt had an amount of $26.7 million, $22.4 million of which is due within 12 months. Further information regarding our notes payable is provided in Note K – Notes Payable and Long-Term Debt in the Notes to Consolidated Financial Statements in this Form 10-K. We also have fixed-rate convertible senior notes.
Historically, our revenue has been significantly concentrated within the data center market, and starting from 2021, our revenue tends to be split primarily between CATV market and data center market. Moreover, within these markets, revenue tends to be concentrated among a small number of customers.
Our revenue tends to be split primarily between CATV market and data center market. Moreover, within these markets, revenue tends to be concentrated among a small number of customers. We have taken several actions to increase the diversity of our customer base.
This factory experiences a lengthy shut-down associated with the Lunar New Year holiday which occurs in Q1 of each year. In addition to the factory shut-down, it is also common for employees in the factory to fail to return to work following resumption of operations.
In addition to the factory shut-down, it is also common for employees in the factory to fail to return to work following resumption of operations.
Based on customer forecasts and order backlog we believe that this elevated datacenter demand will likely continue into 2024. We also believe that sales in our CATV market will increase in 2024 as a result of DOCSIS 4.0 products which we plan to release in 2024.
Based on customer forecasts and order backlog we believe that this elevated data center demand will likely continue into 2025. We also believe that sales in our CATV market will increase in 2025.
Other income (expense), net Years ended December 31, 2023 2022 Change % of % of Amount revenue Amount revenue Amount % (in thousands, except percentages) Interest income $ 609 0.3 % $ 126 0.1 % $ 483 383.3 % Interest expense (9,428 ) (4.3 )% (6,319 ) (2.8 )% (3,109 ) 49.2 % Other income (expense), net (5,871 ) (2.7 )% (1,205 ) (0.5 )% (4,666 ) 387.2 % Total other income (expense), net $ (14,690 ) (6.7 )% $ (7,398 ) (3.2 )% $ (7,292 ) 98.6 % Interest income increased by $0.5 million, or 383.3% from 2022 to 2023 .
Other income (expense), net Years ended December 31, 2024 2023 Change % of % of Amount revenue Amount revenue Amount % (in thousands, except percentages) Interest income $ 874 0.4 % $ 609 0.3 % $ 265 43.5 % Interest expense (6,826 ) (2.7 )% (9,428 ) (4.3 )% 2,602 (27.6 )% Other income (expense), net (109,871 ) (44.1 )% (5,871 ) (2.7 )% (104,000 ) 1,771.4 % Total other income (expense), net $ (115,823 ) (46.4 )% $ (14,690 ) (6.7 )% $ (101,133 ) 688.4 % Interest income increased by $0.3 million, or 43.5% from 2023 to 2024 .
There can be no guarantee that we will be able to raise additional funds on terms acceptable to us, or at all. Contractual Obligations and Commitments We have outstanding notes payable with varying maturities. As of December 31, 2023, our notes payable had an amount of $23.2 million, and the entire balance is due within 12 months.
There can be no guarantee that we will be able to raise additional funds on terms acceptable to us, or at all. Contractual Obligations and Commitments We have outstanding notes payable and debt with varying maturities with various financial institutions.
The following charts provide the revenue contribution from each of the markets we served for the years ended December 31, 2023 and 2022 (in thousands, except percentages): Years ended December 31, Change % of % of 2023 Revenue 2022 Revenue Amount % CATV $ 59,942 27.5 % $ 118,169 53.0 % $ (58,227 ) (49.3 )% Data Center 141,213 64.9 % 77,094 34.6 % 64,119 83.2 % Telecom 13,831 6.4 % 24,727 11.1 % (10,896 ) (44.1 )% FTTH 56 0.0 % 129 0.1 % (73 ) (56.6 )% Other 2,604 1.2 % 2,699 1.2 % (95 ) (3.5 )% Total Revenue $ 217,646 100.0 % $ 222,818 100.0 % $ (5,172 ) (2.3 )% Revenue decreased by $5.2 million or 2.3% from 2022 to 2023.
The following charts provide the revenue contribution from each of the markets we served for the years ended December 31, 2024 and 2023 (in thousands, except percentages): Years ended December 31, Change % of % of 2024 Revenue 2023 Revenue Amount % CATV $ 87,713 35.2 % $ 59,942 27.5 % $ 27,771 46.3 % Data Center 148,525 59.5 % 141,213 64.9 % 7,312 5.2 % Telecom 10,980 4.4 % 13,831 6.4 % (2,851 ) (20.6 )% FTTH 3 0.0 % 56 0.0 % (53 ) (94.6 )% Other 2,144 0.9 % 2,604 1.2 % (460 ) (17.7 )% Total Revenue $ 249,365 100.0 % $ 217,646 100.0 % $ 31,719 14.6 % Revenue increased by $31.7 million or 14.6% from 2023 to 2024.
The decrease was driven primarily by decreased demand in the CATV market, which we believe is due to reductions in purchasing of older generation DOCSIS 3.1 equipment, which was nearly offset by increased demand for our internet datacenter products, arising from demand for products necessary for new datacenter construction along with datacenter upgrades to enable new technologies like Artificial Intelligence (AI).
The increase was driven primarily by increased demand in the CATV market, which we believe is due to market acceptance on our newly release DOCSIS 4.0 products in 2024, and increased demand for our internet data center products, arising from demand for products necessary for new data center construction along with data center upgrades to enable new technologies like AI, offset by the lack of NRE project revenue in 2024.
Operating expenses Years ended December 31, 2023 2022 Change % of % of Amount revenue Amount revenue Amount % (in thousands, except percentages) Research and development $ 35,975 16.5 % $ 36,244 16.3 % $ (269 ) (0.7 )% Sales and marketing 11,069 5.1 % 9,723 4.4 % 1,346 13.8 % General and administrative 53,226 24.5 % 46,658 20.9 % 6,568 14.1 % Total operating expenses $ 100,270 46.1 % $ 92,625 41.6 % $ 7,645 8.3 % Research and development expense Research and development expense decreased $0.27 million, or 0.7% from 2022 to 2023 .
Operating expenses Years ended December 31, 2024 2023 Change % of % of Amount revenue Amount revenue Amount % (in thousands, except percentages) Research and development $ 54,955 22.0 % $ 35,975 16.5 % $ 18,980 52.8 % Sales and marketing 18,154 7.3 % 11,069 5.1 % 7,085 64.0 % General and administrative 59,599 23.9 % 53,226 24.5 % 6,373 12.0 % Total operating expenses $ 132,708 53.2 % $ 100,270 46.1 % $ 32,438 32.4 % Research and development expense Research and development expense increased $19.0 million, or 52.8% from 2023 to 2024 .
Seasonality We are uncertain whether the demand for our internet data center, CATV, telecom and FTTH products is seasonal, as our sales data does not indicate a significant trend with respect to these products. We began to manufacture a meaningful quantity of CATV and internet data center products in our Ningbo, China factory in 2017 and 2020, respectively.
See additional information regarding income taxes in Note O, included in Part II, Item 8 of this Form 10-K. Seasonality We are uncertain whether the demand for our internet data center, CATV, telecom and FTTH products is seasonal, as our sales data does not indicate a significant trend with respect to these products.
These increases were primarily due to more sales effort for our Quantum Bandwidth™ products, offset by less commission expense in China. General and administrative expense General and administrative expense increased by $6.6 million, or 14.1%, from 2022 to 2023 . These increases were primarily due to the higher professional service fees and share-based compensation expense, offset by less depreciation expense.
General and administrative expense General and administrative expense increased by $6.4 million, or 12.0%, from 2023 to 2024 . These increases were primarily due to the higher professional service fees and share-based compensation expense.
The majority of the cash was used for CapEx spending of $14.3 million. In 2022, net cash used in investing activities was $3.8 million. The net cash used consisted of spending on purchase and prepaid of additional property, plant and equipment of $3.7 million and purchase of intangible assets of $0.5 million.
In 2024, net cash used in investing activities was $50.7 million. The majority of the cash was used for Capex spending of $50.2 million. In 2023, net cash used in investing activities was $14.8 million. The majority of the cash was used for CapEx spending of $14.3 million. In 2022, net cash used in investing activities was $3.8 million.
Further information regarding our leases is provided in Note D – Leases to Consolidated Financial Statements in this Form 10-K. Inflation The annual inflation rate in the US came down to 3.4% in 2023. Even though the inflation has slowed from the peak, it remained well above the Federal Reserve's objective of 2%.
Inflation The annual inflation rate in the US came down to 2.9% in 2024, compared with 3.4% in 2023. Even though the inflation has slowed from the peak, it remained above the Federal Reserve's objective of 2%. The annual inflation rate in Taiwan came down to 2.1% in 2024 from 2.7% in 2023 .
The Company has no obligation to sell any Shares under the Agreement and may at any time suspend offers and sales of the Shares under the Agreement. The Agreement provides that the Sales Agent will be entitled to compensation of up to 2% of the gross sales price of the Shares sold through the Sales Agent from time to time.
The Second ATM Agreement provided that the Sales Agent would be entitled to compensation of up to 2% of the gross sales price of the Shares sold through the Sales Agent from time to time.
In 2023 , 2022 , and 2021 , Microsoft accounted for 46.6%, 18.4%, and 14.1% of our revenue, a U.S. based large data center operator accounted for 8.8%, 5.9% and 8.3% of our revenue and China based manufacture accounted for 3.3%, 1.2% and 1.2% of our revenue, respectively.
In 2024 , our key customers in the internet data center market included Microsoft, Oracle and a U.S. based datacenter equipment manufacturer. In 2024 , 2023 , and 2022 , Microsoft accounted for 43.7%, 46.6%, and 18.4% of our revenue and a Oracle accounted for 12.4%, 8.8% and 5.9% of our revenue, respectively.
Furthermore, we have developed additional original design manufacturer, or ODM, relationships with customers in each of our target markets which should enable us to diversify our revenue base. We had three customers and two customers that accounted for more than 10% of our revenue in 2023 and 2022, respectively. Product Development. We invest heavily to develop new and innovative products.
These actions include hiring additional sales staff to improve our ability to serve new customers and introduction of new products that we believe will appeal to new customers. Furthermore, we have developed additional original design manufacturer, or ODM, relationships with customers in each of our target markets which should enable us to diversify our revenue base.
The majority of our research and development expense is allocated to product development, usually with a specific customer and customer platform in mind.
We had three customers that accounted for more than 10% of our revenue in 2024 and 2023, respectively. Product Development. We invest heavily to develop new and innovative products. The majority of our research and development expense is allocated to product development, usually with a specific customer and customer platform in mind.
These activities were offset by $0.3 million net repayments to acceptances payable and bank debt, and $1.0 million related to tax withholding associated with employee share-based compensation. 38 Table of Contents Loans and commitments We have lending arrangements with several financial institutions.
These activities were offset by $7.3 million debt repayment and $0.5 million related to tax withholding associated with employee share-based compensation. 40 Table of Contents Loans and commitments Currently, in the U.S., we do not have a bank loan agreement with any U.S. financial institution. However, we may explore lending opportunities in the U.S. in the future.
We believe these decreases are related to the supply chain pressure easing and decreasing commodity prices, however the labor market is still tight, and the wage pressure is still high. We cannot be sure when or if prices will return to pre-pandemic levels.
The cost of inflation was reflected in increases in shipping costs, labor rates, and in costs of some raw materials. We believe these decreases are related to the supply chain pressure easing and decreasing commodity prices, however the labor market is still tight, and the wage pressure is still high.
As of December 31, 2023, our 2026 Note had an aggregate principle amount of $80.2 million and future interest payments associated with our 2026 Notes totaled $12.6 million. Further information regarding our convertible senior notes is provided in Note L – Convertible Senior Notes in the Notes to Consolidated Financial Statements in this Form 10-K.
As of December 31, 2024, the future minimum payments required under these leases totaled $12.3 million, with $1.7 million payable within 12 months. Further information regarding our leases is provided in Note D – Leases to Consolidated Financial Statements in this Form 10-K.
On September 12, 2023, we entered into Amendment No. 1 to the Agreement with the Sales Agent, to increase the aggregate offering price from $35 million to $70 million. In November, 2023, we completed sales under the ATM Offering.
On August 6, 2024, we entered into Amendment No. 1 to the First ATM Agreement with the Sales Agent, to increase the aggregate offering price from $25 million to $60 million. On November 6, 2024, we provided notice of its termination, effective on such date, of the First ATM Agreement, as amended.
Global renewed its national high-tech enterprise certificate in 2011, 2014, 2017, 2020, and 2023 extending its three-year tax preferential status through December 2026.
Global renewed its national high-tech enterprise certificate in 2011, 2014, 2017, 2020, and 2023 extending its three-year tax preferential status through December 2026. For the years ended December 31, 2024 and 2023, we had $0.2 million each, of unrecognized tax benefits related to U.S. tax benefits recognized for which we do not meet the more likely than not threshold.