Biggest changeSummary of Cash Flows We ended 2024 with cash and cash equivalents of $108.7 million, an increase of $28.7 million from 2023, which was primarily due to net proceeds of $136.7 million from our issuance of 3.8 million ordinary shares in March 2024 in connection with an underwritten public offering and net cash provided by operating activities of $27.9 million, partially offset by net payments on credit facilities of $120.6 million and capital expenditures of $17.6 million. 44 Table of Contents The following table sets forth a summary of operating, investing, and financing activities for the periods presented: Year Ended December 27, 2024 December 29, 2023 December 30, 2022 (in thousands) Cash provided by operating activities $ 27,880 $ 57,632 $ 31,453 Cash used in investing activities (17,636) (15,496) (28,933) Cash provided by (used in) financing activities 18,470 (48,651) 8,455 Net increase (decrease) in cash $ 28,714 $ (6,515) $ 10,975 Our cash provided by operating activities of $27.9 million during 2024 consisted of net non-cash charges of $46.0 million, which consisted primarily of depreciation and amortization of $30.7 million and share-based compensation expense of $15.6 million, and a decrease in our net operating assets and liabilities of $2.7 million, partially offset by net loss of $20.8 million.
Biggest changeThe following table sets forth a summary of operating, investing, and financing activities for the periods presented: Year Ended December 26, 2025 December 27, 2024 December 29, 2023 (in thousands) Cash provided by operating activities $ 29,886 $ 27,880 $ 57,632 Cash used in investing activities (36,169) (17,636) (15,496) Cash provided by (used in) financing activities (4,096) 18,470 (48,651) Net increase (decrease) in cash $ (10,379) $ 28,714 $ (6,515) Our cash provided by operating activities of $29.9 million during 2025 consisted of net non-cash charges of $73.7 million, which consisted primarily of depreciation and amortization of $33.5 million, inventory impairment of $19.8 million, and share-based compensation expense of $16.7 million, and a decrease in our net operating assets and liabilities of $9.0 million, partially offset by a net loss of $52.8 million.
Transactions denominated in currencies other than the functional currency generate foreign exchange gains and losses that are included in other expense (income), net on the accompanying consolidated statements of operations. Substantially all of our sales contracts, and most of our agreements with third-party suppliers, provide for pricing and payment in U.S. dollars.
Transactions denominated in currencies other than the functional currency generate foreign exchange gains and losses that are included in other expense, net on the accompanying consolidated statements of operations. Substantially all of our sales contracts, and most of our agreements with third-party suppliers, provide for pricing and payment in U.S. dollars.
Non-GAAP gross profit, operating income, and net income (loss) are defined as: gross profit, operating income (loss), or net income (loss), respectively, excluding (1) amortization of intangible assets, share-based compensation expense, and discrete or infrequent charges and gains that are outside of normal business operations, including transaction-related costs, contract and legal settlement gains and losses, facility shutdown costs, and severance costs associated with reduction-in-force programs, to the extent they are present in gross profit, operating income (loss), and net income (loss), respectively; and (2) with respect to non-GAAP net income (loss), the tax impacts associated with these non-GAAP adjustments, as well as non-recurring discrete tax items, including deferred tax asset valuation allowance charges.
Non-GAAP gross profit, operating income, and net income (loss) are defined as: gross profit, operating income (loss), or net income (loss), respectively, excluding (1) amortization of intangible assets, share-based compensation expense, and discrete or infrequent charges and gains that are outside of normal business operations, including transaction-related costs, contract and legal settlement gains and losses, facility shutdown costs, inventory impairment charges, and severance costs associated with reduction-in-force programs, to the extent they are present in gross profit, operating income (loss), and net income (loss), respectively; and (2) with respect to non-GAAP net income (loss), the tax impacts associated with these non-GAAP adjustments, as well as non-recurring discrete tax items, including deferred tax asset valuation allowance charges.
Sales are recognized at a point-in-time, upon "delivery," as such term is defined within the contract, which is generally at the time of shipment, as that is when control of the promised good has transferred. 36 Table of Contents Cost of sales, gross profit, and gross margin Cost of sales consists primarily of purchased materials, direct labor, indirect labor, factory overhead cost, and depreciation expense for our manufacturing facilities and equipment.
Sales are recognized at a point-in-time, upon "delivery," as such term is defined within the contract, which is generally at the time of shipment, as that is when control of the promised good has transferred. 41 Table of Contents Cost of sales, gross profit, and gross margin Cost of sales consists primarily of purchased materials, direct labor, indirect labor, factory overhead cost, and depreciation expense for our manufacturing facilities and equipment.
Accordingly, these transactions are not subject to material exchange rate fluctuations. 37 Table of Contents Income tax expense Income tax expense consists primarily of taxes on our taxable income related to our domestic and foreign operations, offset by the benefit of our tax holiday in Singapore, which expires in 2026.
Accordingly, these transactions are not subject to material exchange rate fluctuations. 42 Table of Contents Income tax expense Income tax expense consists primarily of taxes on our taxable income related to our domestic and foreign operations, offset by the benefit of our tax holiday in Singapore, which expires in 2026.
Changes in these estimates can have a material impact on our financial statements. 38 Table of Contents Results of Operations The following table sets forth our results of operations for the periods presented. The period-to-period comparison of results is not necessarily indicative of results for future periods.
Changes in these estimates can have a material impact on our financial statements. 43 Table of Contents Results of Operations The following table sets forth our results of operations for the periods presented. The period-to-period comparison of results is not necessarily indicative of results for future periods.
The cyclicality of the semiconductor industry will continue to impact our results of operations in the future. 35 Table of Contents Customer Concentration The number of capital equipment manufacturers for the semiconductor device industry is significantly consolidated, resulting in a small number of large manufacturers.
The cyclicality of the semiconductor industry will continue to impact our results of operations in the future. 40 Table of Contents Customer Concentration The number of capital equipment manufacturers for the semiconductor device industry is significantly consolidated, resulting in a small number of large manufacturers.
Cyclicality of Semiconductor Capital Equipment Industry Our business is subject to the cyclicality of the capital expenditures of the semiconductor industry, which drives cyclicality in the semiconductor capital equipment industry in which we operate. In 2024, we derived over 90% of our sales from the semiconductor capital equipment industry.
Cyclicality of Semiconductor Capital Equipment Industry Our business is subject to the cyclicality of the capital expenditures of the semiconductor industry, which drives cyclicality in the semiconductor capital equipment industry in which we operate. In 2025, we derived over 90% of our sales from the semiconductor capital equipment industry.
Because we have a valuation allowance recorded against our U.S. state and federal deferred income taxes, we did not record tax benefits from our U.S. taxable losses during 2024. 41 Table of Contents Non-GAAP Financial Results Management uses certain non-GAAP metrics to evaluate our operating and financial results.
Because we have a valuation allowance recorded against our U.S. state and federal deferred income taxes, we did not record tax benefits from our U.S. taxable losses during 2025. 46 Table of Contents Non-GAAP Financial Results Management uses certain non-GAAP metrics to evaluate our operating and financial results.
All non-GAAP adjustments are presented on a gross basis; the related income tax effects, including current and deferred income tax expense, are included in the adjustment line under the heading "Tax adjustments related to non-GAAP adjustments." Year Ended December 27, 2024 December 29, 2023 (dollars in thousands, except per share amounts) U.S.
All non-GAAP adjustments are presented on a gross basis; the related income tax effects, including current and deferred income tax expense, are included in the adjustment line under the heading "Tax adjustments related to non-GAAP adjustments." Year Ended December 26, 2025 December 27, 2024 (dollars in thousands, except per share amounts) U.S.
Income tax is also impacted by certain withholding taxes, stock option and restricted share unit (“RSU”) activity, and credit generation. Critical Accounting Estimates Our consolidated financial statements have been prepared in accordance with GAAP.
Income tax is also impacted by certain withholding taxes, Pillar 2 top-up taxes, stock option and restricted share unit (“RSU”) activity, and credit generation. Critical Accounting Estimates Our consolidated financial statements have been prepared in accordance with GAAP.
The following table presents our unaudited non‑GAAP gross profit and non-GAAP gross margin and a reconciliation from gross profit, the most comparable GAAP measure, for the periods indicated: Year Ended December 27, 2024 December 29, 2023 (dollars in thousands) U.S.
The following table presents our unaudited non‑GAAP gross profit and non-GAAP gross margin and a reconciliation from gross profit, the most comparable GAAP measure, for the periods indicated: Year Ended December 26, 2025 December 27, 2024 (dollars in thousands) U.S.
Our customers are a significant component of this consolidation, resulting in our sales being concentrated in a few customers. For 2024, two customers with individual sales over 10%, Lam Research and Applied Materials, accounted for a combined 73% of total sales.
Our customers are a significant component of this consolidation, resulting in our sales being concentrated in a few customers. For 2025, two customers with individual sales over 10%, Lam Research and Applied Materials, accounted for a combined 76% of total sales.
Once the value of inventory is adjusted, the original cost of our inventory, less the write-down, represents its new cost basis. During 2024, 2023, and 2022, we wrote down inventory determined to be excessive or obsolete by $8.6 million, $9.8 million, and $5.0 million, respectively.
Once the value of inventory is adjusted, the original cost of our inventory, less the write-down, represents its new cost basis. During 2025, 2024, and 2023, we wrote down inventory determined to be excessive or obsolete by $3.6 million, $8.6 million, and $9.8 million, respectively.
In 2024, the tax benefit resulting from our Singapore tax holiday, compared to the Singapore statutory tax rate, was approximately $7.1 million. During 2024, we maintained a valuation allowance against our U.S. state and federal deferred tax assets; therefore, we are not recording income tax benefits related to our U.S. GAAP losses.
In 2025, the tax benefit resulting from our Singapore tax holiday, compared to the Singapore statutory tax rate, was approximately $3.4 million. During 2025, we maintained a valuation allowance against our U.S. state and federal deferred tax assets; therefore, we are not recording income tax benefits related to our U.S. GAAP losses.
Year Ended December 27, 2024 December 29, 2023 Net sales 100.0 100.0 Cost of sales 87.8 87.3 Gross profit 12.2 12.7 Operating expenses: Research and development 2.7 2.5 Selling, general, and administrative 9.3 9.8 Amortization of intangible assets 1.0 1.8 Total operating expenses 13.1 14.1 Operating loss (0.9) (1.3) Interest expense, net 1.1 2.4 Other expense, net 0.1 0.1 Loss before income taxes (2.1) (3.8) Income tax expense 0.3 1.5 Net loss (2.5) (5.3) 39 Table of Contents Comparison of 2024 and 2023 Net sales Year Ended Change December 27, 2024 December 29, 2023 Amount % (dollars in thousands) Net sales $ 849,040 $ 811,120 $ 37,920 4.7 % The increase in net sales from 2023 to 2024 was primarily due to increased customer demand stemming from increased spending within the semiconductor capital equipment industry.
Year Ended December 26, 2025 December 27, 2024 Net sales 100.0 100.0 Cost of sales 90.7 87.8 Gross profit 9.3 12.2 Operating expenses: Research and development 2.4 2.7 Selling, general, and administrative 10.1 9.3 Amortization of intangible assets 0.9 1.0 Total operating expenses 13.4 13.1 Operating loss (4.1) (0.9) Interest expense, net 0.7 1.1 Other expense, net 0.2 0.1 Loss before income taxes (5.0) (2.1) Income tax expense 0.6 0.3 Net loss (5.6) (2.5) 44 Table of Contents Comparison of 2025 and 2024 Net sales Year Ended Change December 26, 2025 December 27, 2024 Amount % (dollars in thousands) Net sales $ 947,652 $ 849,040 $ 98,612 11.6 % The increase in net sales from 2024 to 2025 was primarily due to increased customer demand stemming from increased spending within the semiconductor capital equipment industry.
Year Ended December 27, 2024 December 29, 2023 (dollars in thousands, except per share amounts) Net sales $ 849,040 $ 811,120 Gross margin 12.2 % 12.7 % Gross margin, non-GAAP 12.7 % 13.4 % Operating margin (0.9) % (1.3) % Operating margin, non-GAAP 2.2 % 2.9 % Net loss $ (20,820) $ (42,985) Net income, non-GAAP $ 5,888 $ 12,257 Diluted EPS $ (0.64) $ (1.47) Diluted EPS, non-GAAP $ 0.18 $ 0.42 Key Factors Affecting Our Business Investment in Semiconductor Manufacturing Equipment The design and manufacturing of semiconductor devices is constantly evolving and becoming more complex in order to achieve greater performance and efficiency.
Year Ended December 26, 2025 December 27, 2024 (dollars in thousands, except per share amounts) Net sales $ 947,652 $ 849,040 Gross margin 9.3 % 12.2 % Gross margin, non-GAAP 12.2 % 12.7 % Operating margin (4.1) % (0.9) % Operating margin, non-GAAP 2.2 % 2.2 % Net loss $ (52,781) $ (20,820) Net income, non-GAAP $ 7,915 $ 5,888 Diluted EPS $ (1.54) $ (0.64) Diluted EPS, non-GAAP $ 0.23 $ 0.18 Key Factors Affecting Our Business Investment in Semiconductor Manufacturing Equipment The design and manufacturing of semiconductor devices is constantly evolving and becoming more complex in order to achieve greater performance and efficiency.
Although we do not have any long-term contracts that require customers to place certain order quantities with us, Lam Research and Applied Materials have been our customers for over 20 years. Macroeconomic Conditions The semiconductor industry is cyclical in nature and is impacted by macroeconomic factors in the markets and industries in which we operate.
Although we do not have any long-term contracts that require customers to place certain order quantities with us, Lam Research and Applied Materials have been our customers for over 20 years. Macroeconomic Conditions The semiconductor capital equipment industry is inherently cyclical.
The decrease in our net operating assets and liabilities of $2.7 million during 2024 was primarily due to an increase in accounts payable of $29.1 million, partially offset by an increase in accounts receivable of $19.9 million, a decrease in accrued and other liabilities of $4.6 million, and an increase in inventories of $4.2 million.
The decrease in our net operating assets and liabilities of $9.0 million during 2025 was primarily due to a decrease in accounts receivable of $16.1 million and a decrease in prepaid assets of $7.9 million, partially offset by a decrease in accrued and other liabilities of $7.1 million and a decrease in accounts payable of $6.4 million.
The increase in cash provided by financing activities from 2023 to 2024 was primarily due to net proceeds from our issuance of shares, partially offset by increased net payments on our credit facilities. Recent Accounting Pronouncements From time to time, the Financial Accounting Standards Board (“FASB”) or other standards setting bodies issue new accounting pronouncements.
The decrease in cash provided by financing activities from 2024 to 2025 was primarily due to net proceeds from our issuance of shares in the prior year. 50 Table of Contents Recent Accounting Pronouncements From time to time, the Financial Accounting Standards Board (“FASB”) or other standards setting bodies issue new accounting pronouncements.
GAAP gross margin 12.2 % 12.7 % Non-GAAP gross margin 12.7 % 13.4 % (1) Represents severance costs associated with our global reduction-in-force programs. 42 Table of Contents The following table presents our unaudited non‑GAAP operating income and non-GAAP operating margin and a reconciliation from operating income (loss), the most comparable GAAP measure, for the periods indicated: Year Ended December 27, 2024 December 29, 2023 (dollars in thousands) U.S.
(3) Represents severance costs associated with our global reduction-in-force programs (other than severance costs associated with the exit from our Scotland and Korea operations, as described above). 47 Table of Contents The following table presents our unaudited non‑GAAP operating income and non-GAAP operating margin and a reconciliation from operating loss, the most comparable GAAP measure, for the periods indicated: Year Ended December 26, 2025 December 27, 2024 (dollars in thousands) U.S.
The following table presents our unaudited non‑GAAP net income and non-GAAP diluted EPS and a reconciliation from net income (loss), the most comparable GAAP measure, for the periods indicated.
(4) Represents transaction-related costs incurred in connection with our acquisitions pipeline. 48 Table of Contents The following table presents our unaudited non‑GAAP net income and non-GAAP diluted EPS and a reconciliation from net income (loss), the most comparable GAAP measure, for the periods indicated.
Year Ended December 27, 2024 December 29, 2023 (in thousands) Net sales $ 849,040 $ 811,120 Cost of sales 745,706 707,724 Gross profit 103,334 103,396 Operating expenses: Research and development 23,018 20,223 Selling, general, and administrative 79,384 79,334 Amortization of intangible assets 8,572 14,734 Total operating expenses 110,974 114,291 Operating loss (7,640) (10,895) Interest expense, net 9,266 19,379 Other expense, net 1,148 804 Loss before income taxes (18,054) (31,078) Income tax expense 2,766 11,907 Net loss $ (20,820) $ (42,985) The following table sets forth our results of operations as a percentage of our total net sales for the periods presented.
Year Ended December 26, 2025 December 27, 2024 (in thousands) Net sales $ 947,652 $ 849,040 Cost of sales 859,877 745,706 Gross profit 87,775 103,334 Operating expenses: Research and development 23,086 23,018 Selling, general, and administrative 95,650 79,384 Amortization of intangible assets 8,311 8,572 Total operating expenses 127,047 110,974 Operating loss (39,272) (7,640) Interest expense, net 6,620 9,266 Other expense, net 1,674 1,148 Loss before income taxes (47,566) (18,054) Income tax expense 5,215 2,766 Net loss $ (52,781) $ (20,820) The following table sets forth our results of operations as a percentage of our total net sales for the periods presented.
The increase in our weighted average borrowing rate was due to higher applicable margin as a result of higher leverage ratios in 2024 (+29bps) and higher Bloomberg Short-Term Bank Yield ("BSBY") and Secured Overnight Financing Rate ("SOFR") rates as a result of a higher short-term borrowing interest rate macroeconomic environment (+22bps).
The decrease in our weighted average borrowing rate was due to lower average Secured Overnight Financing Rate ("SOFR") rates (-93bps), the variable component of our borrowing rate, and lower applicable margin (-22bps), the fixed component of our borrowing rate, as a result of lower average leverage ratios in 2025.
Liquidity and Capital Resources The following section discusses our liquidity and capital resources, including our primary sources of liquidity and our material cash requirements. Our cash and cash equivalents are maintained in highly liquid and accessible accounts with no significant restrictions.
Our cash and cash equivalents are maintained in highly liquid and accessible accounts with no significant restrictions.
GAAP operating loss $ (7,640) $ (10,895) Non-GAAP adjustments: Amortization of intangible assets 8,572 14,734 Share-based compensation 15,576 17,338 Transaction-related costs (1) 785 — Other (2) 1,600 2,298 Non-GAAP operating income $ 18,893 $ 23,475 U.S.
GAAP operating loss $ (39,272) $ (7,640) Non-GAAP adjustments: Restructuring plan costs (1) 26,644 — Share-based compensation 16,728 15,576 Amortization of intangible assets 8,311 8,572 Facility shutdown costs (2) 6,726 — Other (3) 1,408 1,600 Transaction-related costs (4) — 785 Non-GAAP operating income $ 20,545 $ 18,893 U.S.
Interest expense, net Year Ended Change December 27, 2024 December 29, 2023 Amount % (dollars in thousands) Interest expense, net $ 9,266 $ 19,379 $ (10,113) (52.2 %) Weighted average borrowings outstanding $ 159,427 $ 292,661 $ (133,234) (45.5 %) Weighted average borrowing rate 7.31 % 6.80 % +51 bps The decrease in interest expense, net from 2023 to 2024 was primarily due to decreases in the weighted average amounts borrowed, partially offset by an increase in our weighted average borrowing rate.
Interest expense, net Year Ended Change December 26, 2025 December 27, 2024 Amount % (dollars in thousands) Interest expense, net $ 6,620 $ 9,266 $ (2,646) (28.6 %) Weighted average borrowings outstanding $ 125,508 $ 159,427 $ (33,919) (21.3 %) Weighted average borrowing rate 6.16 % 7.31 % -115 bps The decrease in interest expense, net from 2024 to 2025 was primarily due to decreases in the weighted average amounts borrowed and decreases in our weighted average borrowing rate.
GAAP net loss $ (20,820) $ (42,985) Non-GAAP adjustments: Amortization of intangible assets 8,572 14,734 Share-based compensation 15,576 17,338 Transaction-related costs (1) 785 — Other (2) 1,600 2,298 Tax adjustments related to non-GAAP adjustments (3) 175 9,778 Tax expense from valuation allowance (4) — 11,094 Non-GAAP net income $ 5,888 $ 12,257 U.S.
GAAP net loss $ (52,781) $ (20,820) Non-GAAP adjustments: Restructuring plan costs (1) 26,644 — Share-based compensation 16,728 15,576 Amortization of intangible assets 8,311 8,572 Facility shutdown costs (2) 6,726 — Other (3) 1,408 1,600 Transaction-related costs (4) — 785 Loss on extinguishment of debt (5) 667 — Tax adjustments related to non-GAAP adjustments (6) 129 175 Tax expense (benefit) from valuation allowance (7) 83 — Non-GAAP net income $ 7,915 $ 5,888 U.S.
Cash used in investing activities during 2024 and 2023 consisted of capital expenditures.
Cash used in investing activities during 2025 and 2024 consisted of capital expenditures. Cash used in financing activities during 2025 consisted of net payments on our credit facilities of $4.4 million.
GAAP gross profit $ 103,334 $ 103,396 Non-GAAP adjustments: Share-based compensation 3,360 3,130 Other (1) 908 2,191 Non-GAAP gross profit $ 107,602 $ 108,717 U.S.
GAAP gross profit $ 87,775 $ 103,334 Non-GAAP adjustments: Restructuring plan costs (1) 20,711 — Share-based compensation 2,856 3,360 Facility shutdown costs (2) 2,760 — Other (3) 1,171 908 Non-GAAP gross profit $ 115,273 $ 107,602 U.S.
While challenging macroeconomic conditions have impacted and will continue to impact our business and customers in the near term, we believe demand for semiconductors, semiconductor capital equipment, and our products will return to growth, fueled by the long-term growing need for more semiconductor productive capacity and enhanced process technologies.
While challenging macroeconomic and geopolitical conditions may persist in the near and intermediate term, we remain confident in our belief that the long-term demand for semiconductors, semiconductor capital equipment, and our products will continue to grow, driven by an increasing need for expanded semiconductor productive capacity and advanced manufacturing process technologies.
Gross margin Year Ended Change December 27, 2024 December 29, 2023 Amount % (dollars in thousands) Cost of sales $ 745,706 $ 707,724 $ 37,982 5.4 % Gross profit $ 103,334 $ 103,396 $ (62) (0.1 %) Gross margin 12.2 % 12.7 % -50 bps The decrease in gross margin from 2023 to 2024 was primarily due to unfavorable sales mix and increased factory labor and overhead costs, partially offset by lower severance costs associated with our global reduction-in-force programs (+20bps) and lower excess and obsolete inventory expense (+10bps).
Gross margin Year Ended Change December 26, 2025 December 27, 2024 Amount % (dollars in thousands) Cost of sales $ 859,877 $ 745,706 $ 114,171 15.3 % Gross profit $ 87,775 $ 103,334 $ (15,559) (15.1 %) Gross margin 9.3 % 12.2 % -290 bps The decrease in gross margin from 2024 to 2025 was primarily due to increased restructuring, country exit, and reduction-in-force related costs; increased supplies and tooling, employee, and occupancy costs; and unfavorable sales mix, partially offset by lower excess and obsolete inventory expense.
Other expense, net Year Ended Change December 27, 2024 December 29, 2023 Amount % (dollars in thousands) Other expense, net $ 1,148 $ 804 $ 344 42.8 % The change in other expense, net from 2023 to 2024 was primarily due to currency exchange rate fluctuations during the year related to our local currency payables of our foreign operations.
Other expense, net Year Ended Change December 26, 2025 December 27, 2024 Amount % (dollars in thousands) Other expense, net $ 1,674 $ 1,148 $ 526 45.8 % The change in other expense, net from 2024 to 2025 was primarily due to debt issuance and modification costs connected to amending our credit agreement.
GAAP diluted EPS $ (0.64) $ (1.47) Non-GAAP diluted EPS $ 0.18 $ 0.42 Shares used to compute diluted non-GAAP EPS 33,135,552 29,514,553 (1) Represents transaction-related costs incurred in connection with our acquisition pipeline. (2) Represents severance costs associated with our global reduction-in-force programs.
GAAP diluted EPS $ (1.54) $ (0.64) Non-GAAP diluted EPS $ 0.23 $ 0.18 Shares used to compute non-GAAP diluted EPS 34,358,211 33,135,552 (1) Represents the costs associated with our Consolidation Restructuring Plan.
Additionally, for 2024, the amount includes $0.5 million of costs incurred in connection with exiting and consolidating one of our U.S.-based manufacturing facilities. 43 Table of Contents (3) Adjusts U.S. GAAP income tax expense for the impact of our non-GAAP adjustments, which are presented on a gross basis.
Accordingly, $0.2 million of existing capitalized deferred issuance costs were written off as a loss on extinguishment of debt and $0.5 million of third-party and lender fees were expensed as incurred. (6) Adjusts GAAP income tax expense for the impact of our non-GAAP adjustments, which are presented on a gross basis.
Selling, general, and administrative Year Ended Change December 27, 2024 December 29, 2023 Amount % (dollars in thousands) Selling, general, and administrative $ 79,384 $ 79,334 $ 50 0.1 % Selling, general, and administrative expense remained approximately unchanged from 2023 to 2024. 40 Table of Contents Amortization of intangible assets Year Ended Change December 27, 2024 December 29, 2023 Amount % (dollars in thousands) Amortization of intangibles assets $ 8,572 $ 14,734 $ (6,162) (41.8) % The decrease in amortization expense from 2023 to 2024 was primarily due to certain intangible assets becoming fully amortized in the fourth quarter of 2023.
Selling, general, and administrative Year Ended Change December 26, 2025 December 27, 2024 Amount % (dollars in thousands) Selling, general, and administrative $ 95,650 $ 79,384 $ 16,266 20.5 % The increase in selling, general, and administrative expenses from 2024 to 2025 was primarily due to increased non-recurring restructuring, country exit, and reduction-in-force related costs of $9.4 million, increased employee-related costs of $2.8 million, increased legal and professional consulting costs of $1.3 million, increased outside service provider costs of $1.0 million, increased costs associated with software and IT services of $0.8 million, and increased share-based compensation of $1.7 million, partially offset by reduced transaction-related costs associated with our acquisitions pipeline of $0.8 million. 45 Table of Contents Amortization of intangible assets Year Ended Change December 26, 2025 December 27, 2024 Amount % (dollars in thousands) Amortization of intangibles assets $ 8,311 $ 8,572 $ (261) (3.0) % The decrease in amortization expense from 2024 to 2025 was primarily due to certain intangible assets becoming fully amortized in the fourth quarter of 2024.
Income tax expense Year Ended Change December 27, 2024 December 29, 2023 Amount % (dollars in thousands) Income tax expense $ 2,766 $ 11,907 $ (9,141) (76.8 %) Loss before income taxes $ (18,054) $ (31,078) $ 13,024 (41.9 %) Effective tax rate (15.3) % (38.3) % +2,300 bps The decrease in income tax expense from 2023 to 2024 was primarily due to recording a valuation allowance against our U.S. federal and state deferred tax assets in the second quarter of 2023, resulting in an $11.1 million charge to income tax expense.
Income tax expense Year Ended Change December 26, 2025 December 27, 2024 Amount % (dollars in thousands) Income tax expense $ 5,215 $ 2,766 $ 2,449 88.5 % Loss before income taxes $ (47,566) $ (18,054) $ (29,512) 163.5 % Effective tax rate (11.0) % (15.3) % +430 bps The increase in income tax expense from 2024 to 2025 was primarily due to the impact of Organization for Economic Co-operation and Development ("OECD") Global Anti-Base Erosion Model Rules ("Pillar Two") on our Singapore operations, resulting in an increased tax accrual of $2.0 million.
GAAP operating margin (0.9) % (1.3) % Non-GAAP operating margin 2.2 % 2.9 % (1) Represents transaction-related costs incurred in connection with our acquisitions pipeline. (2) Represents severance costs associated with our global reduction-in-force programs, and, for 2024, the amount includes $0.5 million of costs incurred in connection with exiting and consolidating one of our U.S.-based manufacturing facilities.
(3) Represents severance costs associated with our global reduction-in-force programs (other than severance costs associated with the exit from our Scotland and Korea operations, as described above). (4) Represents transaction-related costs incurred in connection with our acquisitions pipeline.