Biggest changeRESULTS OF OPERATIONS The following table sets forth, for the periods indicated, our Statements of Operations data (in thousands): Fiscal Years 2023 2022 2021 Revenue $ 648,407 $ 675,170 $ 606,920 Cost of revenue (1) 262,610 268,989 265,065 Gross profit 385,797 406,181 341,855 Operating expenses: Research and development (1) 148,545 148,228 138,844 Selling, general and administrative (1) (2) 129,852 125,279 122,009 Total operating expenses 278,397 273,507 260,853 Income from operations 107,400 132,674 81,002 Other income (expense): Warrant liability expense (3) — — (11,130) Interest income 20,807 4,251 1,470 Interest expense (12,384) (8,551) (22,063) Other (expense) income, net (4) (665) 114,746 (6,334) Other income (expense), net 7,758 110,446 (38,057) Income before income taxes 115,158 243,120 42,945 Income tax expense (benefit) (5) 23,581 (196,835) 4,972 Net income $ 91,577 $ 439,955 $ 37,973 (1) Includes (a) amortization expense related to intangible assets arising from acquisitions and (b) share-based compensation expense included in our Consolidated Statements of Operations as set forth below (in thousands): 30 Fiscal Years 2023 2022 2021 (a) Intangible amortization expense: Cost of revenue $ 4,369 $ 7,839 $ 15,296 Selling, general and administrative 23,735 25,592 30,917 Total intangible amortization expense $ 28,104 $ 33,431 $ 46,213 (b) Share-based compensation expense: Cost of revenue $ 4,325 $ 4,038 $ 3,298 Research and development 14,808 14,940 13,332 Selling, general and administrative 18,970 22,207 18,368 Total share-based compensation expense $ 38,103 $ 41,185 $ 34,998 (2) Fiscal year 2023 includes $7.7 million of acquisition-related professional fees expense.
Biggest changeFor additional information related to these and other accounting policies refer to Note 2 - Summary of Significant Accounting Policies to our Consolidated Financial Statements included in this Annual Report which is incorporated by reference herein. 31 RESULTS OF OPERATIONS The following table sets forth, for the periods indicated, our Statements of Operations data (in thousands): Fiscal Years 2024 2023 2022 Revenue $ 729,578 $ 648,407 $ 675,170 Cost of revenue (1) 335,805 262,610 268,989 Gross profit 393,773 385,797 406,181 Operating expenses: Research and development (1) 182,158 148,545 148,228 Selling, general and administrative (1) (2) 137,949 129,852 125,279 Total operating expenses 320,107 278,397 273,507 Income from operations 73,666 107,400 132,674 Other income (expense): Interest income 22,986 20,807 4,251 Interest expense (5,136) (12,384) (8,551) Other income (expense), net (3) 10 (665) 114,746 Other income, net 17,860 7,758 110,446 Income before income taxes 91,526 115,158 243,120 Income tax expense (benefit) (4) 14,667 23,581 (196,835) Net income $ 76,859 $ 91,577 $ 439,955 (1) Includes (a) amortization expense related to intangible assets arising from acquisitions and (b) share-based compensation expense included in our Consolidated Statements of Operations as set forth below (in thousands): Fiscal Years 2024 2023 2022 (a) Intangible amortization expense: Cost of revenue $ 14,790 $ 4,369 $ 7,839 Research and development 4,763 — — Selling, general and administrative 17,612 23,735 25,592 Total intangible amortization expense $ 37,165 $ 28,104 $ 33,431 (b) Share-based compensation expense: Cost of revenue $ 5,938 $ 4,325 $ 4,038 Research and development 18,072 14,808 14,940 Selling, general and administrative 21,634 18,970 22,207 Total share-based compensation expense $ 45,644 $ 38,103 $ 41,185 (2) Fiscal years 2024 and 2023 includes $7.7 million and $9.1 million, respectively, of acquisition transaction costs.
Cash Flow from Investing Activities: Our cash flow from investing activities for fiscal year 2023 of $36.3 million consisted primarily of proceeds of $515.8 million related to the sale and maturities of short-term investments and proceeds from the sale of equipment of $8.0 million, partially offset by $375.1 million in purchases of short-term investments, $87.7 million for acquisitions, net of cash acquired and capital expenditures of $24.7 million.
Our cash flow from investing activities for fiscal year 2023 of $36.3 million consisted primarily of proceeds of $515.8 million related to the sale and maturities of short-term investments and proceeds from the sale of equipment of $8.0 million, partially offset by $375.1 million in purchases of short-term investments, $87.7 million for acquisitions, net of cash acquired and capital expenditures of $24.7 million.
OVERVIEW We design and manufacture semiconductor products for I&D, Data Center and Telecom industries. Headquartered in Lowell, Massachusetts, we have more than 70 years of application expertise, with silicon, GaAs, GaN and InP fabrication, manufacturing, assembly and test, and operational facilities throughout North America, Europe and Asia.
OVERVIEW We design and manufacture semiconductor products and solutions for I&D, Data Center and Telecom industries. Headquartered in Lowell, Massachusetts, we have more than 70 years of application expertise, with silicon, GaAs, GaN and InP fabrication, manufacturing, assembly and test, and operational facilities throughout North America, Europe and Asia.
The preparation of financial statements, in conformity with generally accepted accounting principles in the U.S., requires management to make estimates and judgments that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting period.
The preparation of financial statements, in conformity with U.S. generally accepted accounting principles (“GAAP”), requires management to make estimates and judgments that affect the reported amounts of assets and liabilities, the reported amounts of revenue and expenses during the reporting period and disclosure of contingent assets and liabilities at the date of the financial statements.
See “ Item 1 - Business ” for additional information. Basis of Presentation We have one reportable operating segment and all intercompany balances have been eliminated in consolidation. We have a 52 or 53-week fiscal year ending on the Friday closest to the last day of September. Fiscal years 2023, 2022 and 2021 each consisted of 52 weeks.
See “ Item 1 - Business ” for additional information. Basis of Presentation We have one reportable operating segment and all intercompany balances have been eliminated in consolidation. We have a 52 or 53-week fiscal year ending on the Friday closest to the last day of September. Fiscal years 2024, 2023 and 2022 each consisted of 52 weeks.
We design, develop and manufacture differentiated semiconductor products for customers who demand high performance, quality and reliability.
We design, develop and manufacture differentiated semiconductor products and solutions for customers who demand high performance, quality and reliability.
ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATION. The following discussion and analysis of our financial condition and results of operations should be read in conjunction with our consolidated financial statements and related notes that appear elsewhere in this Annual Report.
ITEM 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATION. This Management’s Discussion and Analysis of our financial condition and results of operations should be read in conjunction with our consolidated financial statements and related notes that appear elsewhere in this Annual Report.
The value of our goodwill and purchased intangible assets could also be impacted by future adverse changes, such as a decline in the valuation of technology company stocks, including the valuation of our common stock, or a significant slowdown in the worldwide economy or in the optical communications equipment or semiconductor industry.
The value of our goodwill and purchased intangible assets could also be impacted by future adverse changes, such as a decline in the valuation of technology company stocks, including the valuation of our common stock, or a significant slowdown in the worldwide economy or in the semiconductor industry.
We may need to raise additional capital from time to time through the issuance and sale of equity or debt securities, and there is no assurance that we will be able do so on favorable terms or at all. As of September 29, 2023, we had no off-balance sheet arrangements.
We may need to raise additional capital from time to time through the issuance and sale of equity or debt securities, and there is no assurance that we will be able to do so on favorable terms or at all. As of September 27, 2024, we had no off-balance sheet arrangements.
As of September 29, 2023, we estimated $1.9 million in asset retirement obligations primarily for the restoration of leased facilities upon the termination of the related leases. Although it is reasonably possible that our estimates could change materially in the next twelve months, we are presently unable to reliably estimate when any cash settlement of these obligations may occur.
As of September 27, 2024, we estimated $1.9 million in asset retirement obligations primarily for the restoration of leased facilities upon the termination of the related leases. Although it is reasonably possible that our estimates could change materially in the next twelve months, we are presently unable to reliably estimate when any cash settlement of these obligations may occur. 35
On a periodic basis, we reassess valuation allowances on our deferred tax assets, weighing positive and negative evidence, to assess recoverability. We determined that the valuation allowance on the majority of our domestic NOLs and R&D tax credit carryforwards and other deferred tax assets should be released as of September 30, 2022.
On a periodic basis, we reassess valuation allowances on our deferred tax assets, weighing positive and negative evidence, to assess recoverability. We determined that the valuation allowance on the majority of our domestic Net Operating Losses (“NOL”) and R&D tax credit carryforwards and other deferred tax assets should be released as of September 30, 2022.
Our primary end markets are: (1) I&D, which includes military and commercial radar, RF jammers, electronic countermeasures, communication data links, satellite communications and multi-market applications, which include industrial, medical, test and measurement and scientific applications; (2) Data Center, enabled by our broad portfolio of analog ICs and photonic components for high speed optical module customers; and (3) Telecom, which includes carrier infrastructure such as long-haul/metro, 5G and FTTx/PON, among others.
Our primary end markets are: (1) I&D, which includes military and commercial radar, RF jammers, electronic countermeasures, communication data links, satellite communications and various wired and wireless multi-market applications, which include industrial, medical, test and measurement and scientific applications; (2) Data Center, enabled by our broad portfolio of analog ICs and photonic components for high speed connectivity customers; and (3) Telecom, which includes carrier infrastructure such as long-haul/metro, 5G and future generation infrastructure, satellite communications and FTTx/PON, among others.
As of September 29, 2023, cash held by our indefinitely reinvested foreign subsidiaries was $16.5 million, which, along with cash generated from foreign operations, is expected to be used in the support of international growth and working capital requirements as well as the repayment of certain intercompany loans.
As of September 27, 2024, cash held by our indefinitely reinvested foreign subsidiaries was $6.5 million, which, along with cash generated from foreign operations, is expected to be used in the support of international growth and working capital requirements as well as the repayment of certain intercompany loans.
Cash Flow from Financing Activities: 34 During fiscal year 2023, our cash used in financing activities of $149.0 million was primarily related to the $120.8 million payment of the total outstanding principal balance of our Term Loans (as defined in Note 15 - Debt ), $32.6 million of repurchases of stock associated with employee tax withholdings on vested equity awards, partially offset by $5.6 million of proceeds from employee stock purchases.
During fiscal year 2023, our cash used in financing activities of $149.0 million was primarily related to the $120.8 million payment of the total outstanding principal balance of our Term Loans (as defined in Note 15 - Debt ), $32.6 million of common stock withheld associated with employee taxes on vested equity awards, partially offset by $5.6 million of proceeds from employee stock purchases.
When determining the fair value of property and equipment acquired, generally we must estimate the cost to replace the asset with a new asset taking into consideration such factors as age, condition and the economic useful life of the asset.
In measuring the fair value, we utilize a number of valuation techniques. When determining the fair value of property and equipment acquired, generally we must estimate the cost to replace the asset with a new asset taking into consideration such factors as age, condition and the economic useful life of the asset.
(4) Fiscal year 2022 includes a gain on sale of our equity method investment of $118.2 million. Includes non-cash net losses of $3.3 million and $2.4 million for fiscal years 2022 and 2021, respectively, associated with our equity method investment based on our proportionate share of its losses and changes in equity.
(3) Fiscal year 2022 includes a gain on sale of our equity method investment of $118.2 million and includes a non-cash net loss of $3.3 million associated with our equity method investment based on our proportionate share of its losses and changes in equity.
We expect our revenue in the Data Center market to be driven by the adoption of cloud-based services and the upgrade of data center architectures, to 100G, 200G, 400G and 800G interconnects, which we expect will drive adoption of higher speed optical and photonic components.
We expect our revenue in the Data Center market to be driven by the adoption of higher speed processing technologies and the upgrade of data center architectures to 100G, 200G, 400G, 800G and 1.6T interconnects, which we expect will drive adoption of higher speed optical and photonic components.
See Note 15 - Debt to the Consolidated Financial Statements included in this Annual Report for additional information. (5) Fiscal year 2023 and 2022 includes a non-cash benefit of $12.1 million and $202.8 million, respectively, related to the partial release of our valuation allowance.
See Note 5 - Investments to the Consolidated Financial Statements included in this Annual Report for additional information. (4) Fiscal years 2024, 2023 and 2022 includes a non-cash benefit of $3.6 million, $12.1 million and $202.8 million, respectively, related to the partial release of our valuation allowance.
We plan to use our remaining available cash and cash equivalents as well as our short-term investments for general corporate purposes, including working capital, or for the acquisition of or investment in complementary technologies, design teams, products and businesses.
We plan to use our remaining available cash and cash equivalents and short-term investments for general corporate purposes, including working capital, payment on the 2026 Convertible Notes and leases, or for the acquisition of or investment in complementary technologies, design teams, products and businesses.
This process involves estimating our current tax exposure together and assessing temporary differences resulting from differing treatment of items for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included within our Consolidated Balance Sheets.
Income taxes We are required to estimate our income taxes in each of the jurisdictions in which we operate. This process involves estimating our current tax exposure together and assessing temporary differences resulting from differing treatment of items for tax and accounting purposes. These differences result in deferred tax assets and liabilities, which are included within our Consolidated Balance Sheets.
In fiscal year 2023, research and development expense increased by $0.3 million, or 0.2%, to $148.5 million, representing 22.9% of revenue, compared with $148.2 million, representing 22.0% of revenue, in fiscal year 2022.
In fiscal year 2024, research and development expense increased by $33.6 million, or 22.6%, to $182.2 million, representing 25.0% of revenue, compared with $148.5 million, representing 22.9% of revenue, in fiscal year 2023.
In addition, we have $25.5 million in fixed payments associated with a power purchase agreement that commenced in fiscal 2023 and has a remaining 14-year term. See Note 16- Financing Obligation for additional detail on the power purchase agreement. Remaining purchase commitment of $8.4 million relates to amounts payable for software over a two year period.
In addition, we have $23.9 million in fixed payments associated with a power purchase agreement that commenced in fiscal 2023 and has a remaining 13-year term. See Note 16- Financing Obligation for additional detail on the power purchase agreement. Lastly, we have a purchase commitment of $6.7 million related to amounts payable for software over a two year period.
The following table sets forth, for the periods indicated, our Statements of Operations data expressed as a percentage of our revenue: Fiscal Years 2023 2022 2021 Revenue 100.0 % 100.0 % 100.0 % Cost of revenue 40.5 39.8 43.7 Gross profit 59.5 60.2 56.3 Operating expenses: Research and development 22.9 22.0 22.9 Selling, general and administrative 20.0 18.6 20.1 Total operating expenses 42.9 40.5 43.0 Income from operations 16.6 19.7 13.3 Other income (expense): Warrant liability expense — — (1.8) Interest income 3.2 0.6 0.2 Interest expense (1.9) (1.2) (3.6) Other (expense) income, net (0.1) 17.0 (1.0) Total other income (expense), net 1.2 16.4 (6.3) Income before income taxes 17.8 36.0 7.1 Income tax expense (benefit) 3.7 (29.2) 0.8 Net income 14.1 % 65.2 % 6.3 % Comparison of Fiscal Year Ended September 29, 2023 to Fiscal Year Ended September 30, 2022 Revenue.
See Note 20 - Income Taxes to the Consolidated Financial Statements included in this Annual Report for additional information. 32 The following table sets forth, for the periods indicated, our Statements of Operations data expressed as a percentage of our revenue: Fiscal Years 2024 2023 2022 Revenue 100.0 % 100.0 % 100.0 % Cost of revenue 46.0 40.5 39.8 Gross profit 54.0 59.5 60.2 Operating expenses: Research and development 25.0 22.9 22.0 Selling, general and administrative 18.9 20.0 18.6 Total operating expenses 43.9 42.9 40.5 Income from operations 10.1 16.6 19.7 Other income (expense): Interest income 3.1 3.2 0.6 Interest expense (0.7) (1.9) (1.2) Other income (expense), net — (0.1) 17.0 Total other income, net 2.4 1.2 16.4 Income before income taxes 12.5 17.8 36.0 Income tax expense (benefit) 2.0 3.7 (29.2) Net income 10.5 % 14.1 % 65.2 % Comparison of Fiscal Year Ended September 27, 2024 to Fiscal Year Ended September 29, 2023 Revenue.
Our effective tax rate for fiscal year 2023, as compared to the U.S. federal income tax rate, is impacted primarily by income earned outside the U.S.
For fiscal year 2024, our effective tax rate was 16.0%. Our effective tax rate for fiscal year 2024, as compared to the U.S. federal income tax rate of 21%, is impacted primarily by income earned outside the U.S.
The increase in fiscal year 2023 is primarily due to an increase in our interest rate on the Term Loans (as defined in Note 15 - Debt to the Consolidated Financial Statements included in this Annual Report) prior to our repayment of the total outstanding principal balance of the Term Loans in August 2023. Income tax expense (benefit) .
The decrease in fiscal year 2024 is primarily due to the August 2023 payment of the total outstanding principal balance of the Term Loans (as defined in Note 15 - Debt to the Consolidated Financial Statements included in this Annual Report). Income tax expense .
In fiscal year 2023, selling, general and administrative expenses increased by $4.6 million, or 3.7%, to $129.9 million, or 20.0% of revenue, compared with $125.3 million, or 18.6% of revenue, for fiscal year 2022.
In fiscal year 2024, selling, general and administrative expenses increased by $8.1 million, or 6.2%, to $137.9 million, or 18.9% of revenue, compared with $129.9 million, or 20.0% of revenue, for fiscal year 2023.
In addition, cash used by operating assets and liabilities was $27.8 million for fiscal year 2023, primarily driven by a decrease in accrued and other liabilities of $21.3 million, an increase in inventory of $10.6 million, a decrease in accounts payable of $6.7 million, partially offset by a decrease in accounts receivable of $12.3 million.
In addition, cash used by operating assets and liabilities was $31.0 million for fiscal year 2024, primarily driven by an increase in inventory of $30.2 million, an increase in accounts receivable of $16.8 million and a decrease in accrued and other liabilities of $7.3 million, partially offset by an increase in accounts payable of $18.2 million.
LIQUIDITY AND CAPITAL RESOURCES The following table summarizes our cash flow activities for the fiscal years ended September 29, 2023 and September 30, 2022, respectively (in thousands): Fiscal Year Ended September 29, 2023 September 30, 2022 Cash and cash equivalents, beginning of period $ 119,952 $ 156,537 Net cash provided by operating activities 166,917 176,982 Net cash used in investing activities 36,341 (182,861) Net cash used in financing activities (149,020) (28,908) Effect of exchange rates on cash balances (238) (1,798) Cash and cash equivalents, end of period $ 173,952 $ 119,952 Cash Flow from Operating Activities: Our cash flow from operating activities for fiscal year 2023 was $166.9 million and consisted of a net income of $91.6 million, plus adjustments to reconcile our net income to cash provided by operating activities of $103.1 million, and cash used by operating assets and liabilities of $27.8 million.
LIQUIDITY AND CAPITAL RESOURCES The following table summarizes our cash flow activities for the fiscal years ended September 27, 2024 and September 29, 2023, respectively (in thousands): Fiscal Year Ended September 27, 2024 September 29, 2023 Cash and cash equivalents, beginning of period $ 173,952 $ 119,952 Net cash provided by operating activities 162,640 166,917 Net cash used in investing activities (181,133) 36,341 Net cash used in financing activities (9,064) (149,020) Effect of exchange rates on cash balances 411 (238) Cash and cash equivalents, end of period $ 146,806 $ 173,952 Cash Flow from Operating Activities: Our cash flow from operating activities for fiscal year 2024 was $162.6 million and consisted of a net income of $76.9 million, plus adjustments to reconcile our net income to cash provided by operating activities of $116.8 million, and cash used by operating assets and liabilities of $31.0 million.
In fiscal year 2023, interest expense was $12.4 million, or 1.9% of our revenue, compared to $8.6 million of interest expense, or 1.3% of our revenue, for fiscal year 2022.
Interest expense. In fiscal year 2024, interest expense was $5.1 million, or 0.7% of our revenue, compared to $12.4 million of interest expense, or 1.9% of our revenue, for fiscal year 2023.
(i.e., global intangible low taxed income), resulting in a 15.7% increase, offset primarily by partial release of our valuation 32 allowance, resulting in a 10.6% decrease and research and development credits, resulting in a 4.8% decrease.
(i.e., global intangible low taxed income), resulting in a 12.7% increase, offset primarily by research and development credits, resulting in a 9.4% decrease, Foreign-derived intangible income deduction, resulting in a 4.5% decrease and partial release of our valuation allowance, resulting in a 4.0% decrease.
We expect our revenue in the I&D market to be driven by the expanding product portfolio that we offer which services applications such as test and measurement, satellite communications, civil and military radar, industrial, automotive, scientific and medical applications, further supported by growth in applications for our multi-market catalog products.
Our core strategy is to develop and innovate high-performance products that address our customers’ most difficult technical challenges in our primary markets: I&D, Data Center and Telecom. 29 We expect our revenue in the I&D market to be driven by the expanding product portfolio that we offer which services applications such as test and measurement, satellite communications, civil and military radar, industrial, automotive, scientific and medical applications, further supported by growth in applications for our multi-market catalog products.
Selling, general and administrative expenses increased during fiscal year 2023 primarily due to an increase in acquisition-related professional fees, employee headcount, travel expense and software costs, partially offset by decreases in intangible amortization, share-based compensation expense and lower variable compensation. Interest income.
Selling, general and administrative expenses increased during fiscal year 2024 primarily due to increases in employee-related costs, primarily driven by headcount from acquisitions, and share-based compensation, partially offset by lower professional fees and intangible amortization. Interest income.
During fiscal year 2022, our cash used in financing activities of $28.9 million was primarily related to $36.0 million of repurchases of stock associated with employee tax withholdings on vested equity awards, partially offset by $8.1 million of proceeds from stock option exercises and employee stock purchases.
Cash Flow from Financing Activities: During fiscal year 2024, our cash used in financing activities of $9.1 million was primarily related to $14.2 million of common stock withheld associated with employee taxes on vested equity awards, partially offset by $6.6 million of proceeds from stock option exercises and employee stock purchases.
Share-based compensation expense We account for share-based compensation arrangements using the fair value method as described in Note 2 - Summary of Significant Accounting Policies to our Consolidated Financial Statements in this Annual Report. There are a significant number of estimates and assumptions required for the initial valuation as well as for the ongoing valuation of certain share-based compensation items.
Share-based compensation expense 30 We account for share-based compensation arrangements using the fair value method as described in Note 2 - Summary of Significant Accounting Policies to our Consolidated Financial Statements in this Annual Report.
In fiscal year 2023, income tax expense was $23.6 million, or 3.7% of revenue, compared to a benefit of $196.8 million, or 29.2% of revenue, for fiscal year 2022.
In fiscal year 2024, income tax expense was $14.7 million, or 2.0% of revenue, compared to an expense of $23.6 million, or 3.7% of revenue, for fiscal year 2023.
In fiscal year 2023, interest income was $20.8 million, or 3.2% of our revenue, compared to $4.3 million of interest income, or 0.6% of our revenue, for fiscal year 2022. The change in fiscal year 2023 is due to higher yields on short-term investments and cash equivalents. Interest expense.
In fiscal year 2024, interest income was $23.0 million, or 3.1% of our revenue, compared to $20.8 million of interest income, or 3.2% of our revenue, for fiscal year 2023. The change in fiscal year 2024 is primarily due to the general increase in interest rates on our short-term investments and due to the increase in our short-term investments.
We expect our revenue in the Telecom market to be driven by 5G deployments, with continued upgrades and expansion of communications equipment, and increasing adoption of our high-performance RF, millimeter wave, optical and photonic components. 28 CRITICAL ACCOUNTING POLICIES AND ESTIMATES Our discussion and analysis of our financial condition and results of operations are based on our Consolidated Financial Statements.
We expect our revenue in the Telecom market to be driven by 5G deployments, with continued upgrades and expansion of communications equipment, satellite communications networks and increasing adoption of our high-performance RF, millimeter wave, optical and photonic components.
Fiscal years 2023 and 2022 each consisted of 52 weeks. 31 Revenue from our primary markets, the percentage of change between the years and revenue by primary markets expressed as a percentage of total revenue were (in thousands, except percentages): Fiscal Years 2023 2022 % Change Industrial & Defense $ 317,128 $ 294,341 7.7 % Data Center 146,982 138,127 6.4 % Telecom 184,297 242,702 (24.1) % Total $ 648,407 $ 675,170 (4.0) % Industrial & Defense 48.9 % 43.6 % Data Center 22.7 % 20.5 % Telecom 28.4 % 35.9 % Total 100.0 % 100.0 % In fiscal year 2023, our I&D market revenue increased by $22.8 million, or 7.7%, compared to fiscal year 2022.
Revenue from our primary markets, the percentage of change between the years and revenue by primary markets expressed as a percentage of total revenue were (in thousands, except percentages): Fiscal Years 2024 2023 % Change Industrial & Defense $ 351,639 $ 317,128 10.9 % Data Center 197,875 146,982 34.6 % Telecom 180,064 184,297 (2.3) % Total $ 729,578 $ 648,407 12.5 % Industrial & Defense 48.2 % 48.9 % Data Center 27.1 % 22.7 % Telecom 24.7 % 28.4 % Total 100.0 % 100.0 % In fiscal year 2024, our I&D market revenue increased by $34.5 million, or 10.9%, compared to fiscal year 2023.
Revenue reserves We establish revenue reserves, primarily for distributor price adjustments, which requires the use of judgment and estimates that impact the amount and timing of revenue recognition. We record reductions of revenue for such distributor pricing adjustments in the same period that the related revenue is recorded based on estimates of historical pricing adjustments granted to distributors.
Revenue reserves We establish revenue reserves, primarily for product returns, price adjustments and stock rotations for products sold. Each revenue reserve requires the use of judgment and estimates that impact the amount and timing of revenue recognition. We record reductions of revenue for such reserve adjustments, in the same period that the related revenue is recorded.
For additional information on the sale of our equity method investment, see Note 5 - Investments to our Consolidated Financial Statements included in this Annual Report.
For additional information on the cash paid for our acquisitions, net of cash acquired, see Note 4 - Acquisitions to our Consolidated Financial Statements included in this Annual Report.
Gross profit. In fiscal year 2023, our gross profit decreased by $20.4 million, or 5.0%, compared to fiscal year 2022. Gross margin of 59.5% in fiscal year 2023 decreased 70 basis points, compared to fiscal year 2022.
Gross profit. In fiscal year 2024, our gross profit increased by $8.0 million, or 2.1%, compared to fiscal year 2023. Gross margin of 54.0% in fiscal year 2024 decreased 550 basis points, compared to fiscal year 2023.
The decrease was primarily due to a decrease in sales of legacy products partially offset by an increase in sales of our high performance analog Data Center products. Gross profit . In fiscal year 2022, our gross profit increased by $64.3 million, or 18.8%, compared to fiscal year 2021.
The increase was primarily driven by an increase in sales of 400G and 800G high-performance analog Data Center products, partially offset by a decrease in sales of our legacy connectivity products. In fiscal year 2024, our Telecom market revenue decreased by $4.2 million, or 2.3%, compared to fiscal year 2023.
Our cash flow from operating activities for fiscal year 2022 was $177.0 million and consisted of a net income of $440.0 million, plus adjustments to reconcile our net income to cash provided by operating activities of $216.3 million, and changes in operating assets and liabilities of $46.7 million.
Our cash flow from operating activities for fiscal year 2023 was $166.9 million and consisted of a net income of $91.6 million, plus adjustments to reconcile our net income to cash provided by operating activities of $103.1 million, and cash used by operating assets and liabilities of $27.8 million.
In fiscal year 2022, our revenue increased by $68.3 million, or 11.2%, to $675.2 million from $606.9 million for fiscal year 2021. Fiscal years 2022 and 2021 each consisted of 52 weeks.
In fiscal year 2024, our revenue increased by $81.2 million, or 12.5%, to $729.6 million from $648.4 million for fiscal year 2023. Fiscal years 2024 and 2023 each consisted of 52 weeks.
For additional information on the payment of the total outstanding principal balance of our Term Loans, see Note 15 - Debt to our Consolidated Financial Statements included in this Annual Report.
For additional information on the payment of the total outstanding principal balance of our Term Loans, see Note 15 - Debt to our Consolidated Financial Statements included in this Annual Report. Liquidity As of September 27, 2024, we held $146.8 million of cash and cash equivalents, primarily deposited with financial institutions as well as $435.1 million of liquid short-term investments.
The increase was primarily driven by defense program shipments, incremental revenue from recent acquisitions, sales of GaN products and expansion of high-performance analog product lines into the I&D market, partially offset by a decrease in sales of legacy products. In fiscal year 2023, our Data Center market revenue increased by $8.9 million, or 6.4%, compared to fiscal year 2022.
The increase was primarily driven by revenue from recent acquisitions, partially offset by lower sales of legacy products for industrial markets. In fiscal year 2024, our Data Center market revenue increased by $50.9 million, or 34.6%, compared to fiscal year 2023.
Research and development expense increased during fiscal year 2022 primarily as a result of an increase in employee headcount, employee-related costs, share-based compensation expense, depreciation expense, development foundry costs and design software costs, partially offset by lower lease costs. Selling, general and administrative.
Research and development expense increased during fiscal year 2024 primarily as a result of increases in employee-related costs, driven by higher headcount associated with acquisitions, higher intangible asset amortization and share-based compensation expense. 33 Selling, general and administrative.
The value of all assets and liabilities are recognized at fair value as of the acquisition date using a market participant approach. In measuring the fair value, we utilize a number of valuation techniques.
Business Combinations We apply significant estimates and judgments in order to determine the fair value of the identified tangible and intangible assets acquired, liabilities assumed and goodwill recognized in business combinations. The value of all assets and liabilities are recognized at fair value as of the acquisition date using a market participant approach.
(2) Estimated future lease payments, see Note 17 - Leases to the Consolidated Financial Statements included in this Annual Report for additional information. (3) We have purchase commitments of $69.6 million primarily related to services and inventory supply arrangements of which approximately $56.9 million that is non-cancelable.
For additional information related to our Liquidity and Capital Resources, see Note 15 - Debt to our Consolidated Financial Statements included in this Annual Report. Our other significant contractual payment obligations consist of purchase agreements and other commitments. We have purchase commitments of $151.1 million primarily related to services and inventory supply arrangements of which approximately $138.7 million is non-cancelable.
The decrease in gross profit during 2023 was primarily due to lower sales, increases in production supplies, employee headcount primarily due to acquisitions, depreciation expense and variable costs, partially offset by lower intangible asset amortization. Research and development.
The increase in gross profit during 2024 was primarily as a result of higher sales primarily driven by recent acquisitions, partially offset by product mix, increased employee-related costs, primarily driven by headcount from acquisitions, higher intangible asset amortization and depreciation expense. Research and development.
We believe the decision to reinvest these earnings will not have a significant impact on our liquidity.
The undistributed earnings of certain foreign subsidiaries are considered indefinitely reinvested for the periods presented and we do not intend to repatriate such earnings. We believe the decision to reinvest these earnings will not have a significant impact on our liquidity.
Adjustments to reconcile our net income to cash provided by operating activities of $216.3 million primarily included a gain of $200.4 million primarily related to the release of the valuation allowance, a net gain of $114.9 million related to the sale of our equity method investment offset by equity method investment losses, depreciation and intangible amortization expense of $57.2 million and share-based compensation expense of $41.2 million.
Adjustments to reconcile our net income to cash provided by operating activities of $116.8 million primarily included depreciation and intangible amortization expense of $67.2 million, share-based compensation expense of $45.6 million and deferred income tax expense of $4.9 million, partially offset by $7.6 million in amortization on marketable securities.
These estimates may vary significantly and the assumptions may not be accurate resulting us to make adjustments to historically recorded balances. Income taxes 29 We are required to estimate our income taxes in each of the jurisdictions in which we operate.
There are a significant number of estimates and assumptions required for the initial valuation as well as for the ongoing valuation of certain share-based compensation items. These estimates may vary significantly and the assumptions may not be accurate resulting us to make adjustments to historically recorded balances.
In addition, cash used by operating assets and liabilities was $46.7 million for fiscal year 2022, primarily driven by an increase in accounts receivable of $17.0 million, an increase in inventory of $32.3 million, a decrease in accrued and other liabilities of $5.6 million, partially offset by a decrease in prepaid expenses and other assets of $5.6 million and an increase in accounts payable of $2.4 million.
In addition, cash used by operating assets and liabilities was $27.8 million for fiscal year 2023, primarily driven by a decrease in accrued and other liabilities of $21.3 million, an increase in inventory of $10.6 million, a decrease in accounts payable of $6.7 million, partially offset by a decrease in accounts receivable of $12.3 million. 34 Cash Flow from Investing Activities: Our cash flow used in investing activities for fiscal year 2024 of $181.1 million consisted primarily of cash paid for acquisitions, net of cash acquired of $72.6 million, capital expenditures of $22.4 million, purchases of $426.6 million of short-term investments and other investing activities of $4.3 million, offset by proceeds of $344.8 million for the sale and maturities of short-term investments.
The change in the provision is primarily due to the $202.8 million partial release of the valuation allowance on our domestic NOL and R&D tax credit carryforwards and other deferred taxes in our fiscal fourth quarter of 2022. See Note 20 - Income Taxes to the Consolidated Financial Statements included in this Annual Report for additional information.
The decrease in the provision is primarily due to lower Income before taxes, the Foreign-derived intangible income deduction in the fiscal year ended September 27, 2024 plus a $3.6 million partial release of the valuation allowance, primarily relating to our domestic NOL and R&D tax credit carryforwards, released in our fiscal fourth quarter of 2024.
The actual pricing adjustments granted to distributors may significantly exceed or be less than the historical estimates resulting in adjustments to revenue in the incorrect period. Business Combinations We apply significant estimates and judgments in order to determine the fair value of the identified tangible and intangible assets acquired, liabilities assumed and goodwill recognized in business combinations.
The reserves are estimated based on the expected value method derived from historical data, current expectations and economic conditions, and contractual terms with customers, including distributors. The actual pricing adjustments granted may significantly exceed or be less than the historical estimates resulting in adjustments to revenue in the incorrect period.