Non-GAAP Gross Profit and Non-GAAP Gross Margin

We calculate non-GAAP Gross Profit and non-GAAP Gross Margin excluding the items below from cost of goods sold in applicable periods and we calculate non-GAAP Gross Margin as non-GAAP Gross Profit divided by total net sales.

• PSL and Sanken Distribution Agreement - Represents the elimination of inventory cost amortization and foundry service payment related to one-time costs incurred in connection with the disposition of Polar Semiconductor, LLC (“PSL”) during the fiscal year ended March 26, 2021 (the “PSL Divestiture”).
• Stock-based compensation - Represents non-cash expenses arising from the grant of stock-based awards.
• AMTC Facility consolidation one-time costs - Represents one-time costs incurred in connection with closing of our manufacturing facility in Thailand (the “AMTC Facility”) and transitioning of test and assembly functions to our manufacturing facility in the Philippines (the “AMPI Facility”) announced in fiscal year 2020 consisting of: moving equipment between facilities, contract terminations and other non-recurring charges. The closure and transition of the AMTC Facility was substantially completed as of the end of March 2021. These costs are in addition to, and not duplicative of, the adjustments noted in note (*) below.
• Amortization of acquisition-related intangible assets - Represents non-cash expenses associated with the amortization of intangible assets in connection with the acquisition of Voxtel, Inc., which closed in August 2020.
• COVID-19 related expenses - Represents expenses attributable to the COVID-19 pandemic primarily related to increased purchases of masks, gloves and other protective materials, and overtime premium compensation paid for maintaining 24-hour service at the AMPI Facility.

(*) Non-GAAP Gross Profit and the corresponding calculation of non-GAAP Gross Margin in this release do not include adjustments consisting of:

• Additional AMTC related costs - Represents costs relating to the closing of the AMTC Facility and the transitioning of test and assembly functions to the AMPI Facility in the Philippines announced in fiscal year 2020 consisting of: the net savings expected to result from the movement of work to the AMPI Facility, which facility had duplicative capacity based on the buildouts of the AMPI Facility in fiscal years 2019 and 2018. The elimination of these costs did not reduce our production capacity and therefore did not have direct effects on our ability to generate revenue. The closure and transition of the AMTC Facility was substantially completed as of the end of March 2021.
• Out of period adjustment for depreciation expense of giant magnetoresistance assets (“GMR assets”) - Represents a one-time depreciation expense related to the correction of an immaterial error, related to 2017, for certain manufacturing assets that have reached the end of their useful lives.

Non-GAAP Operating Expenses, non-GAAP Operating Income and non-GAAP Operating Margin

We calculate non-GAAP Operating Expenses and non-GAAP Operating Income excluding the same items excluded above to the extent they are classified as operating expenses, and also excluding the items below in applicable periods. We calculate non-GAAP Operating Margin as non-GAAP Operating Income divided by total net sales.

• Transaction fees - Represents transaction-related legal and consulting fees incurred primarily in connection with (i) the unsuccessful acquisition of a competitor in fiscal year 2019, (ii) the acquisition of Voxtel, Inc. in fiscal year 2020, and (iii) the PSL Divestiture and the transfer of the Sanken products distribution business to PSL in fiscal year 2020, and (iv) one-time transaction-related legal and consulting fees in fiscal 2021.
• Severance - Represents severance costs associated with (i) labor savings initiatives to manage overall compensation expense as a result of the declining sales volume during the applicable period, including a voluntary separation incentive payment plan for employees near retirement and a reduction in force and (ii) the closing of the AMTC Facility and the transitioning of test and assembly functions to the AMPI Facility announced and initiated in fiscal year 2020.
• Impairment of long-lived assets – Represents impairment charge incurred in connection with the planned sale of the AMTC Facility.
• Change in fair value of contingent consideration – Represents the change in fair value of contingent consideration payable in connection with the acquisition of Voxtel, Inc.

(**) Non-GAAP Operating Income in this release does not include adjustments consisting of those set forth in note (*) to the calculation of non-GAAP Gross Profit, and the corresponding calculation of non-GAAP Gross Margin, above or:

• Labor savings - Represents salary and benefit costs related to employees whose positions were eliminated through voluntary separation programs or other reductions in force (not associated with the closure of the AMTC Facility or any other plant or facility) and a restructuring of overhead positions from high-cost to low-cost jurisdictions net of costs for newly hired employees in connection with such restructuring.

EBITDA, Adjusted EBITDA, and Adjusted EBITDA Margin
We calculate EBITDA as net income minus interest income (expense), tax provision (benefit), and depreciation and amortization expenses. We calculate Adjusted EBITDA as EBITDA excluding the same items excluded above and also excluding the items below in applicable periods, We calculate Adjusted EBITDA Margin as Adjusted EBITDA divided by total net sales.

• Non-core loss (gain) on sale of equipment - Represents non-core miscellaneous losses and gains on the sale of equipment.
• Miscellaneous legal judgment charge – Represents a one-time charge associated with the final payment of the previously accrued amount payable with respect to a VAT dispute related to the construction of the AMPI Facility.
• Loss on debt extinguishment – Represents one-time costs representing deferred financing costs associated with the $300.0 million of our term loan facility repaid during the year ended March 26, 2021.
• Foreign currency translation loss (gain) - Represents losses and gains resulting from the remeasurement and settlement of intercompany debt and operational transactions, as well as transactions with external customers or vendors denominated in currencies other than the functional currency of the legal entity in which the transaction is recorded.
• Income in earnings of equity investment - Represents our equity method investment in PSL.
• Inventory cost amortization - Represents intercompany inventory transactions incurred from purchases made from PSL in fiscal year 2020. Such costs are one-time incurred expenses impacting our operating results during fiscal year 2021 following the PSL Divestiture. Such costs are not expected to have a continuing impact on our operating results after our second fiscal quarter of fiscal year 2021.
• Foundry service payment - Represents foundry service payments incurred under our Price Support Agreement with PSL in respect to the guaranteed capacity at PSL to support our production forecast and are one-time costs incurred impacting our operating results during fiscal year 2021 following the PSL Divestiture. Such costs are not expected to have a continuing impact on our operating results after fiscal year 2021.

Non-GAAP Profit before Tax and Non-GAAP Net Income

We calculate non-GAAP Profit before Tax as Profit before Tax excluding the same items excluded above and also excluding the item below in applicable periods. We calculate non-GAAP Net Income as Net Income excluding the same items excluded above and also excluding the item below in applicable periods.

• Interest on repaid portion of term loan facility – Represents interest expense associated with the $300.0 million of our term loan facility repaid during the period.

Non-GAAP Provision for Income Tax

In calculating non-GAAP Provision for Income Tax, we have added-back the following to GAAP Provision for Income Taxes:

• Tax effect of adjustments to GAAP results - Represents the estimated income tax effect of the adjustments to non-GAAP Profit Before Tax described above and elimination of discrete tax adjustments.