AOSL US Equity☆

Item 7.Management's Discussion and Analysis of Financial Condition and Results of Operations

You should read the following discussion of the financial condition and results of our operations in conjunction with our consolidated financial statements and the notes to those statements included elsewhere in this annual report. Our consolidated financial statements contained in this annual report are prepared in accordance with U.S. GAAP.

Overview

We are a designer, developer and global supplier of a broad portfolio of power semiconductors. Our portfolio of power semiconductors includes approximately 2,400 products, and has grown significantly with the introduction of over 160 new products in the fiscal year ended June 30, 2021 and 2020, respectively, and 200 new products in the fiscal year ended June 30, 2019, respectively. Our teams of scientists and engineers have developed extensive intellectual properties and technical knowledge that encompass major aspects of power semiconductors, which we believe enables us to introduce and develop innovative products to address the increasingly complex power requirements of advanced electronics. We have an extensive patent portfolio that consists of 863 patents and 58 patent applications in the United States as of June 30, 2021. We also have a total of 898 foreign patents, which primarily were based on our research and development efforts through June 30, 2021. We differentiate ourselves by integrating our expertise in technology, design and advanced manufacturing and packaging to optimize product performance and cost. Our portfolio of products targets high-volume applications, including personal computers, graphic cards, game consoles, flat panel TVs, home appliances, smart phones, battery packs, consumer and industrial motor controls and power supplies for TVs, computers, servers and telecommunications equipment.

Our business model leverages global resources, including research and development and manufacturing in the United States and Asia. Our sales and technical support teams are localized in several growing markets. We operate an 8-inch wafer fabrication facility located in Hillsboro, Oregon, or the Oregon fab, which is critical for us to accelerate proprietary technology development, new product introduction and improve our financial performance. To meet the market demand for the more mature high volume products, we also utilize the wafer manufacturing capacity of selected third party foundries. For assembly and test, we primarily rely upon our in-house facilities in China. In addition, we utilize subcontracting partners for industry standard packages. We believe our in-house packaging and testing capability provides us with a competitive advantage in proprietary packaging technology, product quality, cost and sales cycle time.

We operate a power semiconductor packaging, testing and wafer fabrication facility in the Liangjiang New Area of Chongqing, China through our joint venture (the “JV Company”) with two investment funds owned by the Municipality of Chongqing (the “Chongqing Funds”). We currently own 51%, and the Chongqing Funds own 49%, of the equity interest in the JV Company. The Company’s consolidated financial statements for the fiscal years ended June 30, 2021, 2020 and 2019 reflect net losses attributable to the non-controlling interest in the JV Company of $1.8 million, $11.7 million and $16.5 million, respectively. While the JV Company is our consolidated subsidiary for purpose of financial reporting, it operates as an independent and separate legal entity. As a result, the JV Company’s assets and liabilities are segregated from our company's assets and liabilities. For example, the JV Company incurs debt through its own financing and bank loan agreements, and our parent company and other subsidiaries are not parties to these agreements and do not provide any guarantee or security for the JV Company’s debt, nor do we have direct access to any cash proceeds borrowed from such loan agreements. As part of our strategic plan, we formed the JV Company to fulfill growing customer demand. During the fiscal year 2021, the additional capacity at the JV Company contributed significantly to meeting the increasing demand for our products. The JV Company has reached its targeted production of assembly and testing, and is expected to ramp up its Phase I target run rate of the 12-inch wafer fabrication in the quarter ending September 30, 2021. But our goal may be affected by various factors, including the impact of the global COVID-19 pandemic and related economic downturn, intensified geopolitical tensions between China and U.S., logistical difficulties, the JV Company’s ability to obtain financing and other risk factors beyond our control. We will continue to monitor and evaluate market conditions closely during this period and react quickly to the changing environment as necessary to achieve an optimal production level at the JV Company. In addition, the JV Company is currently pursuing various financing options to fund its future expansion and repay its debt obligations, and there is no guarantee that the JV Company will be able obtain such financing with favorable terms, or at all. We expect the joint venture to provide important capacity to support our future growth, enhance our market positions in China, and drive improvements in capital expenditures.

During the fiscal year ended June 30, 2021, we continued our diversification program by developing new silicon and packaging platforms to expand our serviceable available market, or SAM and offer higher performance products. Our metal-oxide-semiconductor field-effect transistors, or MOSFET, and power IC product portfolio expanded significantly. Our high performance products and deepened customer relationships with our OEM and ODM customers have contributed to the achievement of our record high revenue of $656.9 million for the fiscal year 2021, a 41.3% growth compared to the last fiscal year.

Impact of COVID-19 Pandemic to our Business

46

Our business operations have been impacted by the global COVID-19 pandemic and the resulting economic downturn. Numerous governmental jurisdictions, including the States of California, Oregon and Texas in the U.S. and countries throughout the Asia Pacific region have imposed “stay-at-home” orders, quarantines, travel bans and similar governmental orders and restrictions to control the spread of COVID-19. Such orders and restrictions have resulted in business closures, work stoppages, slowdowns and delays in commercial activities, unprecedented and widespread unemployment, disruptions to ports and other shipping infrastructure, border closures, and other travel or health-related restrictions, thereby negatively impacting our customers, suppliers, distributors, employees, offices, and the entire semiconductor ecosystem.

As a result of the COVID-19 pandemic and changing consumer behaviors due to various government restrictions, including "stay-at-home" orders, we have experienced shifting market trends, including an increasing demand in markets for notebooks, PCs, gaming devices and other products. While we have recently benefited from the increasing demand for PC related products, there is no guarantee that this trend will continue, and such increasing demand may discontinue or decline if government authorities relax or terminate COVID-19 related restrictions and consumer behaviors change in response to the reopening of certain economic activities. In an effort to protect the health and safety of our employees and to comply with various government and regulatory guidelines, we took proactive actions to adopt policies and protocols at our locations around the world, including social distancing guidelines, working from home, limiting the number of employees attending meetings, reducing the number of people in our sites at any one time, and suspending employee travel, and these measures may result in difficulties and logistical challenges in our business operations.

Since the start of the second quarter of 2021, there have been increasing availability and administration of vaccines against COVID-19, as well as an easing of restrictions on social, business, travel, and government activities and functions, and a gradual resumption of economic activities and consumer spending in our industries. On the other hand, infection rates continue to fluctuate in various regions and new strains of the virus remain a risk. In addition, there are ongoing global impacts resulting from the pandemic, including disruption of the product supply chains, shortages of semiconductor components, and delays in shipments, product development, and product launches. The full extent of the future impact of the COVID-19 pandemic on our operational and financial performance is uncertain and will depend on many factors outside the Company’s control, including, without limitation, the timing, extent, trajectory and duration of the pandemic; the availability, distribution and effectiveness of vaccines; the spread of new variants of COVID-19; the continued and renewed imposition of protective public safety measures; and the impact of the pandemic on the global economy and demand for consumer products. Although we are unable to predict the full impact and duration of the COVID-19 pandemic on our business, we are actively managing our business operations and financial expenditures in response to continued uncertainty.

Other Factors affecting our performance

In addition to the COVID-19 pandemic and related events as described above, our performance is affected by several key factors, including the following:

The global, regional economic and PC market conditions: Because our products primarily serve consumer electronic applications, any significant change in global and regional economic conditions could materially affect our revenue and results of operations. For example, because a significant amount of our revenue is derived from sales of products in the personal computing ("PC") markets, such as notebooks, motherboards and notebook battery packs, a substantial decline or downturn in the PC market could have a material adverse effect on our revenue and results of operations. The PC markets have experienced a modest global decline in recent years due to continued growth of demand in tablets and smart phones, worldwide economic conditions and the industry inventory correction which had and may continue to have a material impact on the demand for our products. However, we recently have experienced a significant increase of demand in PC market due to the impact of the COVID-19 pandemic and resulting shift in market trend and consumer behaviors. We cannot predict whether and how long this trend will continue due to the uncertainty and unpredictability of COVID-19 pandemic. A decline of the PC market may have a negative impact on our revenue, factory utilization, gross margin, our ability to resell excess inventory, and other performance measures. We have executed and continue to execute strategies to diversify our product portfolio, penetrate other market segments, including the consumer, communications and industrial markets, and improve gross margins and profit by implementing cost control measures. While making efforts to reduce our reliance on the computing market, we continue to support our computing business and capitalize on the opportunities in this market with a more focused and competitive PC product strategy to gain market share.

Manufacturing costs:Our gross margin is affected by a number of factors including our manufacturing costs, utilization of our manufacturing facilities, the product mixes of our sales, pricing of wafers from third party foundries and pricing of semiconductor raw materials. Capacity utilization affects our gross margin because we have certain fixed costs associated with our packaging and testing facilities at our Oregon fab and our Chongqing fabrication facility operated by the JV Company. We expect that in the long term our JV Company will reduce our cost of manufacturing. If we are unable to utilize our manufacturing facilities at a desired level, our gross margin may be adversely affected. In addition, from time to time, we may experience wafer capacity constraints, particularly at third party foundries, that may prevent us from meeting fully the demand

47

of our customers. For example, the recent global shortage of semiconductor manufacturing capacity has provided us with both challenges and opportunities in the market, and highlighted the importance of maintaining sufficient and independent in-house manufacturing capabilities to meet increasing customer demands. While we can mitigate these constraints by increasing and re-allocating capacity at our own fab, we may not be able to do so quickly or at sufficient level, which could adversely affect our financial conditions and results of operations. In addition, we recently commenced a plan to enhance the manufacturing capability and capacity of our Oregon fab by investing in new equipment and expanding our factory facilities, which we expect will have a positive impact on our future new product development and revenue, particularly during the period of global shortage of capacity.

Erosion and fluctuation of average selling price:Erosion of average selling prices of established products is typical in our industry. Consistent with this historical trend, we expect our average selling prices of existing products to decline in the future. However, in the normal course of business, we seek to offset the effect of declining average selling price by introducing new and higher value products, expanding existing products for new applications and new customers and reducing the manufacturing cost of existing products. These strategies may cause the average selling price of our products to fluctuate significantly from time to time, thereby affecting our financial performance and profitability.

Product introductions and customers' product requirements:Our success depends on our ability to introduce products on a timely basis that meet or are compatible with our customers' specifications and performance requirements. Both factors, timeliness of product introductions and conformance to customers' requirements, are equally important in securing design wins with our customers. As we accelerate the development of new technology platforms, we expect to increase the pace at which we introduce new products and seek and acquire design wins. If we were to fail to introduce new products on a timely basis that meet customers' specifications and performance requirements, particularly those products with major OEM customers, and continue to expand our serviceable markets, then we would lose market share and our financial performance would be adversely affected. We believe that the JV Transaction will increase and diversify our customer base, particularly in China, in the long term. However, the ramp-activities and production schedule of our JV Company have been impacted by the COVID-19 pandemic and related events, as discussed above. Even if we are able to ramp up the operation of the JV Company timely, we may not be successful in acquiring or maintaining a sufficient number of new customers to offset additional costs due to various factors, including but are not limited to, competition from other semiconductor companies in the region, our lack of history and prior relationships with customers as a new entrant, difficulties in executing our joint venture strategies and the general economic conditions in Chongqing and China.

Distributor ordering patterns, customer demand and seasonality: Our distributors place purchase orders with us based on their forecasts of end customer demand, and this demand may vary significantly depending on the sales outlook and market and economic conditions of end customers. Because these forecasts may not be accurate, channel inventory held at our distributors may fluctuate significantly, which in turn may prompt distributors to make significant adjustments to their purchase orders placed with us. As a result, our revenue and operating results may fluctuate significantly from quarter to quarter. In addition, because our products are used in consumer electronics products, our revenue is subject to seasonality. Our sales seasonality is affected by numerous factors, including global and regional economic conditions as well as the PC market conditions, revenue generated from new products, changes in distributor ordering patterns in response to channel inventory adjustments and end customer demand for our products and fluctuations in consumer purchase patterns prior to major holiday seasons. In recent periods, broad fluctuations in the semiconductor markets and the global and regional economic conditions, in particular the decline of the PC market conditions, have had a more significant impact on our results of operations than seasonality. Furthermore, our revenue may be impacted by the level of demand from our major customers due to factors outside of our control. If these major customers experience significant decline in the demand of their products, encounter difficulties or defects in their products, or otherwise fail to execute their sales and marketing strategies successfully, it may adversely affect our revenue and results of operations.

Regulatory Matters: As previously disclosed, the U.S. Department of Justice (“DOJ”) commenced an investigation into our compliance with export control regulations relating to business transactions with Huawei and its affiliates (“Huawei”), which were added to the “Entity List” by the Department of Commerce (“DOC”) in May 2019. We continue to cooperate fully with federal authorities in the investigation. The Company has continued to respond to inquiries and requests from DOJ for documents and information relating to the investigation, and the matter is currently pending at DOJ. However, DOJ and DOC have not provided us any clear or definitive response regarding the timeline of the investigation and potential resolutions or outcome. In the meantime, we continue incur significant costs and expenses, including legal and professional fees, in connection with the government investigation, which may reduce our profitability and operating margin.

Principal line items of statements of operations

The following describes the principal line items set forth in our consolidated statements of operations:

Revenue

48

We generate revenue primarily from the sale of power semiconductors, consisting of power discretes and power ICs. Historically, a majority of our revenue has been derived from power discrete products. Because our products typically have three-year to five-year life cycles, the rate of new product introduction is an important driver of revenue growth over time. We believe that expanding the breadth of our product portfolio is important to our business prospects, because it provides us with an opportunity to increase our total bill-of-materials within an electronic system and to address the power requirements of additional electronic systems. In addition, a small percentage of our total revenue is generated by providing packaging and testing services to third parties through one of our subsidiaries.

Our product revenue is reported net of the effect of the estimated stock rotation returns and price adjustments that we expect to provide to our distributors. Stock rotation returns are governed by contract and are limited to a specified percentage of the monetary value of products purchased by the distributor during a specified period. At our discretion or upon our direct negotiations with the original design manufacturers ("ODMs") or original equipment manufacturers ("OEMs"), we may elect to grant special pricing that is below the prices at which we sold our products to the distributors. In these situations, we will grant price adjustments to the distributors reflecting such special pricing. We estimate the price adjustments for inventory at the distributors based on factors such as distributor inventory levels, pre-approved future distributor selling prices, distributor margins and demand for our products.

Cost of goods sold

Our cost of goods sold primarily consists of costs associated with semiconductor wafers, packaging and testing, personnel, including share-based compensation expense, overhead attributable to manufacturing, operations and procurement, and costs associated with yield improvements, capacity utilization, warranty and valuation of inventories. As the volume of sales increases, we expect cost of goods sold to increase. We continued to ramp up the 12-inch fab at the JV Company to meet the increasing demand on our products. While our utilization rates cannot be immune to the market conditions, our goal is to make them less vulnerable to market fluctuations. We believe our market diversification strategy and product growth will drive higher volume of manufacturing which will improve our factory utilization rates and gross margin in the long run.

Operating expenses

Our operating expenses consist of research and development, selling, general and administrative expenses and impairment of long-lived assets. We expect our operating expenses as a percentage of revenue to fluctuate from period to period as we continue to exercise cost control measures in response to the declining PC market as well as align our operating expenses to the revenue level.

Research and development expenses.Our research and development expenses consist primarily of salaries, bonuses, benefits, share-based compensation expense, expenses associated with new product prototypes, travel expenses, fees for engineering services provided by outside contractors and consultants, amortization of software and design tools, depreciation of equipment and overhead costs. We continue to invest in developing new technologies and products utilizing our own fabrication and packaging facilities as it is critical to our long-term success. We also evaluate appropriate investment levels and stay focused on new product introductions to improve our competitiveness. We expect that our research and development expenses will fluctuate from time to time.

Selling, general and administrative expenses.Our selling, general and administrative expenses consist primarily of salaries, bonuses, benefits, share-based compensation expense, product promotion costs, occupancy costs, travel expenses, expenses related to sales and marketing activities, amortization of software, depreciation of equipment, maintenance costs and other expenses for general and administrative functions as well as costs for outside professional services, including legal, audit and accounting services. We expect our selling, general and administrative expenses to fluctuate in the near future as we continue to exercise cost control measures.

Income tax expense

We are subject to income taxes in various jurisdictions. Significant judgment and estimates are required in determining our worldwide income tax expense. The calculation of tax liabilities involves dealing with uncertainties in the application of complex tax regulations of different jurisdictions globally. We establish accruals for potential liabilities and contingencies based on a more likely than not threshold to the recognition and de-recognition of uncertain tax positions. If the recognition threshold is met, the applicable accounting guidance permits us to recognize a tax benefit measured at the largest amount of tax benefit that is more likely than not to be realized upon settlement with a taxing authority. If the actual tax outcome of such exposures is different from the amounts that were initially recorded, the differences will impact the income tax and deferred tax

49

provisions in the period in which such determination is made. Changes in the location of taxable income (loss) could result in significant changes in our income tax expense.

We record a valuation allowance against deferred tax assets if it is more likely than not that a portion of the deferred tax assets will not be realized, based on historical profitability and our estimate of future taxable income in a particular jurisdiction. Our judgments regarding future taxable income may change due to changes in market conditions, changes in tax laws, tax planning strategies or other factors. If our assumptions and consequently our estimates change in the future, the deferred tax assets may increase or decrease, resulting in corresponding changes in income tax expense. Our effective tax rate is highly dependent upon the geographic distribution of our worldwide profits or losses, the tax laws and regulations in each geographical region where we have operations, the availability of tax credits and carry-forwards and the effectiveness of our tax planning strategies.

U.S. Tax Cuts and Jobs Act, Enacted December 22, 2017

On December 22, 2017, the United States enacted tax reform legislation through the Tax Cuts and Jobs Act (“the Tax Act”), which significantly changes the existing U.S. tax laws, including, but not limited to, (1) a reduction in the corporate tax rate from 35% to 21%, (2) a shift from a worldwide tax system to a territorial system, (3) eliminating the corporate alternative minimum tax (AMT) and changing how existing AMT credits can be realized, (4) bonus depreciation that will allow for full expensing of qualified property, (5) creating a new limitation on deductible interest expense and (6) changing rules related to uses and limitations of net operating loss carryforwards created in tax years beginning after December 31, 2017.

The Company is not currently subject to the Base Erosion and Anti-Abuse ( BEAT) tax, which is a tax imposed on certain entities who make payments to their non U.S. affiliates, where such payments reduce the U.S. tax base . The BEAT tax is imposed at a rate of 10% on Adjusted Taxable Income, excluding certain payments to foreign related entities. It is an incremental tax over and above the corporate income tax and is recorded as a period cost. It is possible that this tax could be applicable in future periods, which would cause an increase to the effective tax rate and cash taxes.

U.S. Coronavirus Aid, Relief and Economic Security Act” (“CARES Act”), Enacted March 27, 2020

On March 27, 2020, the United States enacted the CARES Act, which made the changes to existing U.S. tax laws, including, but not limited to, (1) allowing U.S. federal net operating losses originated in the 2018, 2019 or 2020 tax years to be carried back five years to recover taxes paid based upon taxable income in the prior five years, (2) eliminated the 80% of taxable income limitation on net operating losses for the 2018, 2019 and 2020 tax years (the 80% limitation will be reinstated for tax years after 2020), (3) accelerating the refund of prior year alternative minimum tax credits, (4) modifying the bonus depreciation for qualified improvement property and (5) modifying the limitation on deductible interest expense.

As a result of the ability to carryback net operating losses from the June 2018 and June 2019 years to the June 2015 to June 2017 tax years, net operating losses which were previously tax-effected using the current 21% U.S. federal tax rate were revalued to the U.S. tax rates in effect for the June 2015 to June 2017 tax years due to the ability of receiving tax refunds for the taxes paid in these years. Accordingly, we reported a discrete tax benefit of $1.1 million in the third quarter of fiscal year 2020 related to the re-measurement of the net operating losses that could be realized via the new net operating loss carryback provisions.

“U.S. Consolidated Appropriations Act, 2021” (“CAA 2021”), Enacted December 27, 2020

On December 27, 2020, the United States enacted the Consolidated Appropriations Act, 2021, which made changes to existing U.S. tax laws. There was no material impact of the tax law changes included in the Consolidated Appropriations Act, 2021 to the Company.

“The American Rescue Plan Act of, 2021”, Enacted March 11, 2021

On March 11, 2021, the United States enacted the American Rescue Plan Act of 2021, which made changes to existing U.S. tax laws. There was no material impact of the tax law changes included in the American Rescue Plan Act of 2021 to the Company.

Operating results

50

The following tables set forth our results of operations and as a percentage of revenue for the fiscal years ended June 30, 2021, 2020 and 2019. Our historical results of operations are not necessarily indicative of the results for any future period.

Year Ended June 30,

(in thousands) (% of revenue)

Operating expenses:

Impairment of privately-held investment — 600 — — % 0.1 % — %

(1) Includes share-based compensation expense as follows:

Year Ended June 30,

(in thousands) (% of revenue)

Revenue

The following is a summary of revenue by product type:

Year Ended June 30, Change

(in thousands) (in thousands) (in percentage) (in thousands) (in percentage)

51

Fiscal 2021 vs 2020

Total revenue was $656.9 million for fiscal year 2021, an increase of $192.0 million, or 41.3%, as compared to $464.9 million for fiscal year 2020. The increase was primarily due to an increase of $90.8 million in sales of power discrete products and an increase of $95.4 million in sales of power IC products. The increase in power discrete and power IC product sales was primarily due to a 23.0% increase in unit shipments and a 14.5% increase in average selling price due to a shift in product mix as compared to last fiscal year. The increase in revenue of packaging and testing services for the fiscal year 2021 as compared to last fiscal year was primarily due to increased demand. During fiscal year 2021, we accelerated the development of new technology platforms which allowed us to introduce 41 medium and high voltage MOSFET products, targeting primarily the power supply and communication marketing, and 11 module products primarily for the consumer markets, as well as 22 low voltage MOSFET products primarily for the computing and communication markets. In addition, we introduced 84 Power IC new products for computing applications, power supply, communication and consumer markets.

Fiscal 2020 vs 2019

Total revenue was $464.9 million for fiscal year 2020, an increase of $14.0 million, or 3.1%, as compared to $450.9 million for fiscal year 2019. The increase was primarily due to an increase of $20.1 million in sales of power discrete products, partially offset by a decrease of $3.9 million in sales of power IC products. The net increase in product sales was primarily due to a 6.0% increase in average selling price as compared to last fiscal year due to a shift in product mix, partially offset by a 2.3% decrease in unit shipments. The decrease in revenue of packaging and testing services for fiscal year 2020 as compared to last fiscal year was primarily due to the fluctuation of demand on these services externally.

Cost of goods sold and gross profit

Year Ended June 30, Change

(in thousands) (in thousands) (in percentage) (in thousands) (in percentage)

Fiscal 2021 vs 2020

Cost of goods sold was $452.4 million for fiscal year 2021, an increase of $90.2 million, or 24.9%, as compared to $362.2 million for fiscal year 2020. The increase was primarily due to 41.3% increase in revenue. Gross margin increased by 9.0 percentage points to 31.1% for the fiscal year 2021, as compared to 22.1% for the fiscal year 2020. Our JV Company continued its ramp during the fiscal year 2021, which resulted in an increase in the capacity utilization and contributed to the increase in gross margin. We expect our gross margin to continue to fluctuate in the future as a result of variations in our product mix, ramp up costs related to the JV Company, factory utilization, semiconductor wafer and raw material pricing, manufacturing labor cost and general economic and PC market conditions.

Fiscal 2020 vs 2019

Cost of goods sold was $362.2 million for fiscal year 2020, an increase of $26.6 million, or 7.9%, as compared to $335.5 million for fiscal year 2019. The increase was primarily due to limited mass production in our JV Company and the 3.1% increase of revenue. Gross margin decreased by 3.5 percentage points to 22.1% for fiscal year 2020, as compared to 25.6% for fiscal year 2019. The decrease in gross margin was primarily the result of low capacity utilization due to the limited mass production in our Chongqing joint venture during the fiscal year 2020.

52

Research and development expenses

Year Ended June 30, Change

(in thousands) (in thousands) (in percentage) (in thousands) (in percentage)

Fiscal 2021 vs 2020

Research and development expenses were $63.0 million for fiscal year 2021, an increase of $11.7 million, or 22.8%, as compared to $51.3 million for fiscal year 2020. The increase was primarily attributable to a $4.0 million increase in employee compensation and benefit expense mainly due to higher bonus accrual, a $4.2 million increase in product prototyping engineering expense as a result of increased engineering activities, a $2.5 million increase in share-based compensation expense due to higher stock awards price, and a $0.5 million increase in facility expenses as a result of higher office rental expenses and higher utility costs. We continue to evaluate and invest resources in developing new technologies and products utilizing our own fabrication and packaging facilities. We believe the investment in research and development are important to meet our strategic objectives.

Fiscal 2020 vs 2019

Research and development expenses were $51.3 million for fiscal year 2020, an increase of $4.8 million, or 10.4%, as compared to $46.4 million for fiscal year 2019. The increase was primarily attributable to a $1.4 million increase in employee compensation and benefit expense mainly due to annual merit increase, partially offset by lower bonus accrual, a $2.1 million increase in professional fees, a $0.9 million increase in depreciation expenses, and a $0.4 million increase in share-based compensation expense due to more grants in stock awards.

Selling, general and administrative expenses

Year Ended June 30, Change

(in thousands) (in thousands) (in percentage) (in thousands) (in percentage)

Fiscal 2021 vs 2020

Selling, general and administrative expenses were $77.5 million for fiscal year 2021, an increase of $12.7 million, or 19.6%, as compared to $64.8 million for fiscal year 2020. The increase was primarily attributable to a $13.2 million increase in employee compensation and benefits expenses, mainly due to increased headcount, higher bonus expenses and increased employee insurance expenses, as well as $2.2 million increase in share-based compensation expense due to higher stock rewards price. The increase was partially offset by a $1.9 million decrease in legal expense related to the government investigation, and a $0.9 million decrease in business travel expenses as a result of the COVID-19 pandemic.

Fiscal 2020 vs 2019

Selling, general and administrative expenses were $64.8 million for fiscal year 2020, a decrease of $11.2 million, or 14.7%, as compared to $76.0 million for fiscal year 2019. The decrease was primarily due to a $14.9 million reduction in pre-production costs as a result of the commencement of limited mass production at the 12-inch fab facility at the JV Company, and a $2.7 million decrease in share-based compensation expense. The net decrease was partially offset by a $1.0 million increase in depreciation expenses and a $5.4 million increase in legal expenses primarily due to the government investigation.

53

Impairment of privately-held investment

Year Ended June 30, Change

(in thousands) (in thousands) (in percentage) (in thousands) (in percentage)

During the fiscal year 2020, we recorded an other-than-temporary impairment charge for our investment of $0.6 million in a privately-held start-up company. As of June 30, 2021 and 2020, we have a remaining $0.1 million of privately-held investment.

Interest expense and other income (loss), net

Year Ended June 30, Change

(in thousands) (in thousands) (in percentage) (in thousands) (in percentage)

Interest expense was primarily related to bank borrowings. Interest expense increased by $3.6 million in fiscal year 2021 as compared to the last fiscal year was primarily due to an increase in bank borrowings as well as less interest refund from the Chinese government in the JV Company. Interest expense decreased by $4.0 million in fiscal year 2020 as compared to the fiscal year 2019 was primarily due to $6.1 million of interest refund from the Chinese government in the JV Company, partially offset by higher interest expense as a result of an increase in bank borrowings.

Interest income and others were primarily related to interest earned from cash and cash equivalents, as well as foreign exchange gains (losses). Interest income and others, net increased by $3.7 million in fiscal year 2021 as compared to the last fiscal year was primarily due to higher foreign currency exchange gains as a result of the appreciation of RMB against USD. Interest income and others, net decreased by $1.6 million in fiscal year 2020 as compared to the fiscal year 2019 was primarily due to higher foreign currency exchange losses as a result of the depreciation of USD against RMB.

Income tax expense

Year Ended June 30, Change

(in thousands) (in thousands) (in percentage) (in thousands) (in percentage)

Fiscal 2021 vs 2020

Income tax expense for fiscal years 2021 and 2020 was $3.9 million and $0.3 million, respectively. Income tax expense increased by $3.6 million, or 1,030.7% in fiscal year 2021 as compared to fiscal year 2020, primarily due to an approximate $80 million increase in pretax book income in fiscal 2021 (in which we reported a pretax book income of $60.2 million) vs. fiscal 2020 (in which we reported pretax book loss of $17.9 million). Excluding discrete income tax items, the effective tax rate for the current fiscal year was 7.1%, compared to (9.6%) for the prior fiscal year. The changes in the effective tax rate and tax expense between the fiscal years resulted primarily from changes in the mix of earnings in various geographic jurisdictions between the current fiscal year and prior fiscal year.

Fiscal 2020 vs 2019

Income tax expense for fiscal years 2020 and 2019 was $0.3 million and $1.3 million, respectively. Income tax expense decreased by $0.9 million, or 72.3% in fiscal year 2020 as compared to fiscal year 2019 primarily due to a $1.1 million tax

54

benefit in fiscal year 2020 from re-measuring the tax benefit of our U.S. net operating losses that could be carried back to the fiscal 2015, 2016 and 2017 years following the enactment of the CARES Act in March 2020, partially offset by decreased research credits generated in fiscal year 2020 vs. fiscal year 2019 and changes in the mix of earnings in various geographic jurisdictions between the respective periods in fiscal year 2020 compared to fiscal year 2019. Excluding the discrete income tax items, the effective tax rate for the current fiscal year was (9.6%), compared to (14.6%) for the last fiscal year. The changes in the effective tax rate and tax expense between the fiscal years resulted primarily from changes in the mix of earnings in various geographic jurisdictions between the current fiscal year and prior fiscal year and decreased research credits generated in fiscal year 2020.

Liquidity and Capital Resources

Our principal need for liquidity and capital resources is to maintain sufficient working capital to support our operations and to invest adequate capital expenditures to grow our business. To date, we finance our operations and capital expenditures primarily through funds generated from operations and borrowings under our term loans, financing lease and other debt agreements.

On August 18, 2021, Jireh entered into a term loan agreement with a financial institution (the "Bank") in an amount up to $45.0 million for the purpose of expanding and upgrading our fabrication facility located in Oregon. The obligation under the loan agreement is secured by substantially all assets of Jireh and guaranteed by the Company. The agreement has a 5.5 year term and matures on February 16, 2027. Jireh will make consecutive quarterly payments of principal and interest. The loan accrues interest based on adjusted LIBOR plus the applicable margin based on the outstanding balance of the loan. This agreement contains customary restrictive covenants and includes certain financial covenants that require the Company to maintain.

In October 2019, the Company's subsidiary in China entered into a line of credit facility with Bank of Communications Limited in China. This line of credit was scheduled to mature on February 14, 2021 and is based on the China Base Rate multiplied by 1.05, or 4.99% on October 31, 2019. The purpose of the credit facility is to provide short-term borrowings. The Company could borrow up to approximately RMB 60.0 million or $8.5 million based on the currency exchange rate between the RMB and the U.S. Dollar on October 31, 2019. In October 2020, this line of credit was renewed with the same terms and a maturity date of April 21, 2022. As of June 30, 2021, there was no outstanding balance under the loan.

On November 16, 2018, the Company's subsidiary in China entered into a line of credit facility with Industrial and Commercial Bank of China, which expired on September 30, 2019. The purpose of the credit facility was to provide short-term borrowings. The Company could borrow up to approximately RMB 72.0 million or $10.3 million based on currency exchange rate between RMB and U.S. Dollar on November 16, 2018. In December 2020, this line of credit was renewed with the same terms and a maturity date of December 31, 2021. As of June 30, 2021, there was no outstanding balance under the line of credit.

On August 9, 2019, one of the Company's wholly-owned subsidiaries (the "Borrower") entered into a factoring agreement with the Hongkong and Shanghai Banking Corporation Limited (“HSBC”), whereby the Borrower assigns certain of its accounts receivable with recourse. This factoring agreement allows the Borrower to borrow up to 70% of the net amount of its eligible accounts receivable of the Borrower with a maximum amount of $30.0 million. The interest rate is based on one month London Interbank Offered Rate ("LIBOR") plus 1.75% per annum. The Company is the guarantor for this agreement. The Company is accounting for this transaction as a secured borrowing under the Transfers and Servicing of Financial Assets guidance. In addition, any cash held in the restricted bank account controlled by HSBC has a legal right of offset against the borrowing. This agreement, with certain financial covenants required, has no expiration date. The Borrower was in compliance with these covenants as of June 30, 2021. During the fiscal year ended June 30, 2021, the Company borrowed $56.7 million and repaid it in full. As of June 30, 2021, there was no outstanding balance and the Company had unused credit of approximately $30.0 million. On August 11, 2021, the Borrower signed an agreement with HSBC to decrease the borrowing maximum amount to $8.0 million with certain financial covenants required. Other terms remain the same.

On May 1, 2018, Jireh Semiconductor Incorporated (“Jireh”), a wholly-owned subsidiary of the Company, entered into a loan agreement with a financial institution (the "Bank") that provided a term loan in an amount of $17.8 million. The obligation under the loan agreement is secured by certain real estate assets of Jireh and guaranteed by the Company. The loan has a five-year term and matures on June 1, 2023. Beginning June 1, 2018, Jireh made consecutive monthly payments of principal and interest to the Bank. The outstanding principal shall accrue interest at a fixed rate of 5.04% per annum on the basis of a 360-day year. The loan agreement contains customary restrictive covenants and includes certain financial covenants that require the

55

Company to maintain, on a consolidated basis, specified financial ratios. The Company was in compliance with these covenants as of June 30, 2021. As of June 30, 2021, the outstanding balance of the term loan was $15.1 million.

On August 15, 2017, Jireh entered into a credit agreement with the Bank that provided a term loan in an amount up to $30.0 million for the purpose of purchasing certain equipment for our fabrication facility located in Oregon. The obligation under the credit agreement is secured by substantially all assets of Jireh and guaranteed by the Company. The credit agreement has a five-year term and matures on August 15, 2022. In January 2018 and July 2018, Jireh drew down on the loan in the amount of $13.2 million and $16.7 million, respectively. Beginning in October 2018, Jireh is required to pay to the Bank on each payment date, the outstanding principal amount of the loan in monthly installments. The loan accrues interest based on an adjusted London Interbank Offered Rate ("LIBOR") as defined in the credit agreement, plus specified applicable margin in the range of 1.75% to 2.25%, based on the outstanding balance of the loan. The credit agreement contains customary restrictive covenants and includes certain financial covenants that require the Company to maintain, on a consolidated basis, specified financial ratios and fixed charge coverage ratio. The Company was in compliance with these covenants as of June 30, 2021. As of June 30, 2021, the outstanding balance of the term loan was $9.3 million.

In September 2017, the Board of Directors approved a repurchase program (the “Repurchase Program”) that allowed us to repurchase our common shares from the open market pursuant to a pre-established Rule 10b5-1 trading plan or through privately negotiated transactions up to an aggregate of $30.0 million. The amount and timing of any repurchases under the Repurchase Program depend on a number of factors, including but not limited to, the trading price, volume, availability of our common shares and the amount of available cash reserve. Shares repurchased under this program are accounted for as treasury shares and the total cost of shares repurchased is recorded as a reduction of shareholders' equity. During fiscal year 2021 and 2020, we did not repurchase any shares pursuant to the repurchase program. During fiscal years 2019, we repurchased an aggregate of 111,509 shares, from the open market for a total cost of approximately $1.5 million, excluding fees and related expenses, at an average price of $13.43 per share. As of June 30, 2021, the Company had repurchased an aggregate of 6,784,648 shares for a total cost of $67.3 million, at an average price of $9.92 per share, excluding fees and related expenses, since inception of the program. No repurchased shares have been retired. Of the 6,784,648 repurchased shares, 159,645 shares with a weighted average repurchase price of $10.15 per share, were reissued at an average price of $5.24 per share for option exercises and vested restricted stock units ("RSU"). As of June 30, 2021, $13.4 million remain available under the share repurchase program.

The Chinese government imposes certain currency exchange controls on cash transfers out of China. Regulations in China permit foreign owned entities to freely convert the Renminbi into foreign currency for transactions that fall under the "current account," which includes trade related receipts and payments, interests, and dividend payments. Accordingly, subject to the review and verification of the underlying transaction documents and supporting documents by the account banks in China, our Chinese subsidiaries may use Renminbi to purchase foreign exchange currency for settlement of such "current account" transactions without the pre-approval from China's State Administration of Foreign Exchange (SAFE) or its provincial branch. Pursuant to applicable regulations, foreign-invested enterprises in China may pay dividends only out of their accumulated profits, if any, determined in accordance with Chinese accounting standards and regulations. In calculating accumulated profits, foreign-invested enterprises in China are required to allocate at least 10% of their profits each year, if any, to fund the equity reserve account unless the reserve has reached 50% of the registered capital of the enterprises. While SAFE approval is not statutorily required for eligible dividend payments to the foreign parent, in practice, before making the dividend payment, the account bank may seek SAFE's opinion with respect to a dividend payment if the payment involves a relatively large amount, which may delay the dividend payment depending on the then overall status of cross-border payments and receipts of China.

Transactions that involve conversion of Renminbi into foreign currency in relation to foreign direct investments and provision of debt financings in China are classified as "capital account" transactions. Examples of "capital account" transactions include repatriations of investments by foreign owners and repayments of loan principal to foreign lenders. "Capital account" transactions require prior approval from SAFE or its provincial branch or an account bank delegated by SAFE to convert a remittance into a foreign currency, such as U.S. dollars, and transmit the foreign currency outside of China. As a result of this and other restrictions under PRC laws and regulations, our China subsidiaries are restricted in their ability to transfer a portion of their net assets to us, and such restriction may adversely affect our ability to generate sufficient liquidity to fund our operations or other expenditures. As of June 30, 2021 and 2020, such restricted portion amounted to approximately $209.9 million and $209.8 million, or 50.4% and 61.4%, of our total consolidated net assets attributable to the Company, respectively. The increase of restricted net assets was primarily from the JV Company in China.

We believe that our current cash and cash equivalents and cash flows from operations will be sufficient to meet our anticipated cash needs, including working capital and capital expenditures, for at least the next twelve months. In addition, we recently commenced an investment plan to expand the manufacturing capacity and upgrade the operational capabilities of our

56

Oregon fab. We intend to fund the costs by a combination of cash reserve, bank loans and equipment leases. In the long-term, we may require additional capital due to changing business conditions or other future developments, including any investments or acquisitions we may decide to pursue. If our cash is insufficient to meet our needs, we may seek to raise capital through equity or debt financing. The sale of additional equity securities could result in dilution to our shareholders. The incurrence of indebtedness would result in increased debt service obligations and may include operating and financial covenants that would restrict our operations. We cannot be certain that any financing will be available in the amounts we need or on terms acceptable to us, if at all.

JV Company Financing Transactions

From time to time the JV Company has entered into financing and loan agreements with banks and other third parties to fund capital expenditures and other operational expenses in connection with the constructions and ramp-up of the manufacturing facility in Chongqing. The JV Company incurs debt through its own financing agreements, and our parent company and other subsidiaries are not parties to these agreements and do not provide any guarantee or security for JV Company’s debt, nor do we have direct access to any cash proceeds borrowed from such loan agreements. The JV Company is currently pursuing additional financing transactions to fund its operations and ramp-up activities, and to refinance its existing debt. There is no guarantee that the JV Company will be able to secure financing on favorable terms, or at all. In addition, any equity financing by the JV Company may dilute our equity ownership in the JV Company, which may adversely affect our ability to maintain control over the JV Company.

On May 9, 2018 (the “Effective Date”), the JV Company entered into a lease finance agreement and a security agreement (the “Agreements”) with YinHai Leasing Company and China Import/Export Bank (the “Lenders”). Pursuant to the Agreements, the Lenders agree to provide an aggregate of RMB 400.0 million, or $62.8 million based on the currency exchange rate between RMB and U.S. Dollar on the Effective Date, of financing to the JV Company (the “Lease Financing”). In exchange for the Lease Financing, the JV Company agrees to transfer title of its assembly and testing equipment to the Lenders, and the Lenders lease such equipment to the JV Company under a five-year lease arrangement, pursuant to which the JV Company makes quarterly lease payments to the Lenders consisting of principal and interest based on a repayment schedule mutually agreed by the parties. The interest under the Lease Financing is accrued based on the China Base Rate multiplied by 1.15, or 5.4625% on the Effective Date. Under the Agreements, at the end of the five-year lease term, the Lenders agree to sell such equipment back to the JV Company for a nominal amount (RMB 1). The JV Company’s obligations under the Lease Financing are secured by the land and building owned by the JV Company (the “Collateral”). The proceeds from the Lease Financing will be used primarily for the acquisition and installation of the 12-inch fabrication equipment and other expenses of the JV Company relating to the completion of the fabrication facility located in Chongqing. The Agreements contain customary representation, warranties and covenants, including restrictions on the transfer of the Collateral. The Agreements also contain customary events of default, including but are not limited to, failure to make payments and breach of material terms under the Agreements. On June 28, 2020, the parties entered into a modification to this agreement as a result of a change in the bank reference rate, pursuant to which the interest rate was changed to be the five-year loan prime rate in China plus 0.8125%, or 5.4625%. Other terms of this agreement remain the same. As of June 30, 2021, the outstanding balance of the Lease Financing of 190.0 million RMB (equivalent of $29.4 million based on the currency exchange rate as of June 30, 2021) was recorded under short-term and long-term finance lease liabilities.

On November 29 and December 4, 2018, the JV Company entered into two, one-year loan agreements with China Merchant Bank and Chongqing LiangJiang New District China Merchants Group Limited Company in China to provide loans for RMB 80 million and RMB 20 million, respectively, or $14.5 million in total based on the currency exchange rate between RMB and U.S. Dollar on December 31, 2018, at varying interest rates. On January 20, 2020, the JV Company renewed the loan agreements with the same terms. Interest payments are due monthly and quarterly with the entire principal due not later than January 21, 2021. As of June 30, 2021, these two loans were expired and there was no outstanding balance under the loans.

On March 12, 2019, the JV Company entered into a loan agreement with The Export-Import Bank of China in the aggregate principal amount of RMB 200 million (approximately $29.8 million based on currency exchange rate between RMB and U.S. Dollar on March 31, 2019). The loan will mature on February 20, 2025. The JV Company drew down RMB 190 million and RMB 10 million in March 2019 and December 2019, respectively. The loan withdraw window expired on February 28, 2020. The interest is accrued based on the China Base Rate multiplied by 1.1, or 5.39%. The loan requires quarterly interest payments. The principal payments are required to be paid every 6 months over the term of loan commencing in October 2019. This loan is secured by the buildings and certain equipment owned by the JV Company. As a condition of the loan arrangements, 14 million RMB (approximately $2.0 million) of cash is held as restricted cash by the JV Company as a compensating balance at the JV Company's bank until the principal is paid. On June 24, 2020, a modification of this loan was signed as a result of a change in the bank reference rate, pursuant to which the interest rate was changed to be based on the five-year loan prime rate in China plus 0.74%, or 5.39%. Other terms of this loan remain the same. As of June 30, 2021, the

57

outstanding balance of the loan was 184 million RMB (equivalent of $28.5 million based on the currency exchange rate as of June 30, 2021).

In December 2019, the JV Company entered into a loan agreement with China Development Bank in the amount of $24.0 million. The obligation under the loan agreement is secured by certain assets of the JV Company. Beginning December 18, 2020, the JV Company will make consecutive semi-annual payments of principal until December 8, 2024. The interest is accrued based on the LIBOR rate plus 2.8%. The interest is required to be paid on March 21 and September 21 each year. As of June 30, 2021, the outstanding balance of the loan was $19.2 million.

On April 15, 2020, the JV Company entered into a one-year loan agreement with China Everbright Bank in China to borrow a maximum of RMB 100 million (approximately $14.3 million based on the currency exchange rate between RMB and U.S. Dollar on April 15, 2020), in the amount in RMB or USD. Interest payments were due on the 20th of each month, and the entire principal was due on April 16, 2021. The loan consisted of RMB 20 million for working capital borrowing in Chinese yuan and RMB 80 million for borrowing in US dollars that was collateralized by eligible accounts receivable. As of June 30, 2021, this loan was expired and there was no outstanding balance under the loan.

On April 26, 2020, the JV Company entered into a loan agreement with China Development Bank, Agricultural Bank of China, China Merchants Bank and Chongqing Rural Commercial Bank (collectively, "the Banks") in the aggregate principal amount of RMB 250 million (approximately $35.7 million based on the currency exchange rate between RMB and U.S. Dollar on April 26, 2020). The obligation under the loan agreement is secured by certain assets of the JV Company. Beginning December 18, 2020, the JV Company is required to make consecutive semi-annual payments of principal until December 8, 2024. Interest payment is due on March 20, June 20, September 20 and December 20 of each year based on China one-year loan prime rate ("LPR") plus 1.3%. The JV Company drew down RMB 250 million (approximately $35.3 million based on the currency exchange rate between RMB and U.S. Dollar on June 30, 2020) in April 2020. As of June 30, 2021, the outstanding balance of the loan was $34.1 million.

On November 13, 2020, the JV Company entered into a one-year loan agreement with China Merchant Bank in China. The JV Company can borrow up to Chinese Renminbi ("RMB") 50.0 million, or $7.6 million, based on the currency exchange rate between RMB and U.S. Dollar on November 13, 2020. The loan's interest rates are based on the China one-year loan prime rate ("LPR") plus 1.4% per annum. Interest payments are due quarterly with the entire principal due not later than November 19, 2021. During the three months ended December 31, 2020, the JV Company borrowed RMB 50.0 million at an interest rate of 5.25% per annum. As of June 30, 2021, the outstanding balance of this loan was $7.7 million.

On June 29, 2021, the JV Company entered into a one-year loan agreement with China Citic Bank in China to borrow a maximum of $7.7 million. Interest payments are due on the 20th of each quarter starting September 20, 2021, and the entire principal is due on June 29, 2022. As of June 30, 2021, the outstanding balance of this loan was $7.7 million at an interest rate of 3.49% per annum.

On April 19, 2021, the JV Company entered into a loan agreement with China Everbright Bank in China to borrow a maximum of Chinese Renminbi ("RMB") 100 million. The borrowing can be in RMB or U.S. Dollar ("USD"). The loan consists of RMB 50 million for working capital borrowings in Chinese yuan and RMB 50 million for borrowing in USD. The loan is collateralized by eligible accounts receivable. On April 19, 2021, the JV Company borrowed RMB 50.0 million, or $7.7 million based on the currency exchange rate between RMB and USD on April 19, 2021, at an interest rate of 5.1% annum. The interest payments are due quarterly with the entire principal due no later than May 19, 2022. On June 16, 2021 and June 24, 2021, the JV Company also borrowed $4.2 million and $3.5 million at interest rate of 2.7% per annum, with principal due on August 18, 2021 and September 9, 2021, respectively. As of June 30, 2021, the total outstanding balance of these loans was $15.4 million.

Cash, cash equivalents and restricted cash

As of June 30, 2021 and 2020, we had $204.8 million and $162.7 million of cash, cash equivalents and restricted cash, respectively. Our cash, cash equivalents and restricted cash primarily consisted of cash on hand, restricted cash and short-term bank deposits with original maturities of three months or less. Of the $204.8 million and $162.7 million cash and cash equivalents, $134.6 million and $120.3 million, respectively, were deposited with financial institutions outside the United States.

58

The following table shows our cash flows from operating, investing and financing activities for the periods indicated:

Year Ended June 30,

(in thousands)

Cash flows from operating activities

Net cash provided by operating activities of $128.7 million for fiscal year 2021 resulted primarily from net income of $56.3 million, non-cash charges of $70.0 million and net change in assets and liabilities providing net cash of $2.5 million. The non-cash charges of $70.0 million included depreciation and amortization expenses of $52.7 million, share-based compensation expense of $15.3 million, loss on disposal of property and equipment of $0.4 million, and net deferred income taxes of $1.6 million. The net change in assets and liabilities providing net cash of $2.5 million was primarily due to $48.5 million increase in accrued and other liabilities and $1.7 million increase in income taxes payable, partially offset by $22.5 million increase in accounts receivable due to timing of billings and collection of payments, $18.8 million increase in inventories, $5.8 million increase in other current and long-term assets primarily due to decrease in advance payments to suppliers, and $0.5 million decrease in accounts payable primarily due to timing of payments.

Net cash provided by operating activities of $62.3 million for fiscal year 2020 resulted primarily from net loss of $18.3 million, non-cash charges of $56.1 million and net change in assets and liabilities providing net cash of $24.4 million. The non-cash charges of $56.1 million included depreciation and amortization expenses of $45.1 million, share-based compensation expense of $10.5 million, impairment of our investment in a privately-held start-up company of $0.6 million, gain on disposal of property and equipment of $0.1 million, and net deferred income taxes of $0.1 million. The net change in assets and liabilities providing net cash of $24.4 million was primarily due to $27.3 million decrease in other current and long-term assets primarily due to increase in advance payments to suppliers, $11.0 million decrease in accounts receivable due to timing of billings and collection of payments, and $11.0 million increase in accrued and other liabilities, partially offset by $22.8 million increase in inventories, $1.8 million decrease in accounts payable primarily due to timing of payments, and $0.3 million decrease in income taxes payable.

Net cash provided by operating activities of $31.4 million for fiscal year 2019 resulted primarily from net loss of $14.6 million, non-cash charges of $44.8 million and net change in assets and liabilities providing net cash of $1.3 million. The non-cash charges of $44.8 million included depreciation and amortization expenses of $32.0 million, share-based compensation expense of $13.2 million, and net deferred income taxes of $0.5 million. The net change in assets and liabilities providing net cash of $1.3 million was primarily due to $9.6 million increase in accrued and other liabilities, $9.2 million decrease in accounts receivable due to timing of billings and collection of payments, $6.4 million increase in accounts payable primarily due to timing of payments, partially offset by $21.5 million increase in inventories, $1.9 million increase in other current and long-term assets primarily due to increase in advance payments to suppliers, and $0.6 million decrease in income taxes payable.

Cash flows from investing activities

Net cash used in investing activities of $72.5 million for the fiscal year 2021 was primarily attributable to $72.7 million purchases of property and equipment, including $50.0 million purchases in JV Company, which was partially offset by $0.1 million government grant related to equipment in the JV Company.

Net cash used in investing activities of $60.8 million for the fiscal year 2020 was primarily attributable to $62.4 million purchases of property and equipment, including $20.0 million purchases in JV Company, which was partially offset by $1.3 million government grant related to equipment in the JV Company and $0.3 million of proceeds from sale of property and equipment.

59

Net cash used in investing activities of $112.4 million for the fiscal year 2019 was primarily attributable to $112.1 million purchases of property and equipment, including $76.0 million purchases in JV Company, and $0.4 million purchases of intangible assets.

Cash flows from financing activities

Net cash used in financing activities of $19.0 million for the fiscal year 2021 was primarily attributable to $6.9 million in common shares acquired to settle withholding tax related to vesting of restricted stock units, $16.5 million in payments of capital lease obligations, and $66.6 million in repayments of borrowings, partially offset by $65.9 million of proceeds from borrowings and $5.1 million of proceeds from exercises of share options and issuance of shares under the ESPP.

Net cash provided by financing activities of $37.7 million for the fiscal year 2020 was primarily attributable to $96.2 million of proceeds from borrowings, and $3.4 million of proceeds from exercises of share options and issuance of shares under the ESPP, partially offset by $1.5 million in common shares acquired to settle withholding tax related to vesting of restricted stock units, $11.0 million in payments of capital lease obligations, and $49.4 million in repayments of borrowings.

Net cash provided by financing activities of $75.1 million for the fiscal year 2019 was primarily attributable to $24.0 million proceeds from investment by Chongqing Funds, $77.9 million of proceeds from borrowings, and $3.0 million of proceeds from exercises of share options and issuance of shares under the ESPP, partially offset by $2.0 million in common shares acquired to settle withholding tax related to vesting of restricted stock units, $1.5 million for repurchase of our common shares under the repurchase program, $4.4 million in payments of capital lease obligations, and $21.9 million in repayments of borrowings.

Contractual Obligations

Our contractual obligations as of June 30, 2021 are as follows:

Payments Due by Period

Less than More than

Total 1 year 1-3 years 3-5years 5 years

(in thousands)

Capital commitments with respect to property and equipment 90,009 90,009 — — —

Purchase commitments with respect to inventories and others 81,755 81,755 — — —

As of June 30, 2021, we had recorded liabilities of $1.2 million for uncertain tax positions and $0.1 million for potential interest and penalties, which are not included in the above table because we are unable to reliably estimate the amount of payments in individual years that would be made in connection with these uncertain tax positions.

Commitments

See Note 13 of the Notes to the Consolidated Financial Statements contained in this Annual Report on Form 10-K for a description of commitments.

Off-Balance Sheet Arrangements

As of June 30, 2021, we had no material off-balance sheet arrangements as defined in Item 303(a)(4)(ii) of Regulation S-K.

60

Critical Accounting Policies and Estimates

The preparation of our consolidated financial statements requires us to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. To the extent there are material differences between these estimates and actual results, our consolidated financial statements will be affected. On an ongoing basis, we evaluate the estimates, judgments and assumptions including those related to stock rotation returns, price adjustments, allowance for doubtful accounts, valuation of inventories, warranty accrual, income taxes, leases, share-based compensation, recoverability of and useful lives for property, plant and equipment and intangible assets, as well as economic implications of the COVID-19 pandemic.

Revenue recognition

We determine revenue recognition through the following steps: (1) identification of the contract with a customer; (2) identification of the performance obligations in the contract; (3) determination of the transaction price; (4) allocation of the transaction price to the performance obligations in the contract; and (5) recognition of revenue when, or as, a performance obligation is satisfied. We recognize revenue at a point in time when product is shipped to the customer, net of estimated stock rotation returns and price adjustments to certain distributors. We present revenue net of sales taxes and any similar assessments. Our standard payment terms range from 30 to 90 days.

We sell our products primarily to distributors, who in turn sell our products globally to various end customers. Our revenue is net of the effect of the variable consideration relating to estimated stock rotation returns and price adjustments that we expect to provide to certain distributors. Stock rotation returns are governed by contract and are limited to a specified percentage of the monetary value of the products purchased by distributors during a specified period. We estimate provision for stock rotation returns based on historical returns and individual distributor agreements. We also provide special pricing to certain distributors primarily based on volume, to encourage resale of our products. We estimate the expected price adjustments at the time the revenue is recognized based on distributor inventory levels, pre-approved future distributor selling prices, distributor margins and demand for our products. If actual stock rotation returns or price adjustments differ from our estimates, adjustments may be recorded in the period when such actual information is known. Allowance for price adjustments is recorded against accounts receivable and provision for stock rotation is recorded in accrued liabilities on the consolidated balance sheets.

Our performance obligations relate to contracts with a duration of less than one year. We elected to apply the practical expedient provided in ASC 606, “Revenue from Contracts with Customers”. Therefore, we are not required to disclose the aggregate amount of transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period.

We recognize the incremental direct costs of obtaining a contract, which consist of sales commissions, when control over the products they relate to transfers to the customer. Applying the practical expedient, we recognize commissions as expense when incurred, as the amortization period of the commission asset we would have otherwise recognized is less than one year.

Packaging and testing services revenue is recognized at a point in time upon shipment of serviced products to the customer.

Valuation of inventories

We carry inventories at the lower of cost (determined on a first-in, first-out basis) or net realizable value. Cost primarily consists of semiconductor wafers and raw materials, labor, depreciation expenses and other manufacturing expenses and overhead, and packaging and testing fees paid to third parties if subcontractors are used. Valuation of inventories are based on our periodic review of inventory quantities on hand as compared with our sales forecasts, historical usage, aging of inventories, production yield levels and current product selling prices. If actual market conditions are less favorable than those forecasted by us, additional future inventory write-downs may be required that could adversely affect our operating results. Adjustments to inventory, once established are not reversed until the related inventory has been sold or scrapped. If actual market conditions are more favorable than expected and the products that have previously been written down are sold, our gross margin would be favorably impacted.

Product warranty

We provide a standard one-year warranty for the products from the date of purchase by the end customers. We accrue for estimated warranty costs at the time revenue is recognized. Our warranty obligation is affected by product failure rates, labor and material costs for replacing defective parts, related freight costs for failed parts and other quality assurance costs. We monitor our product returns for warranty claims and maintain warranty reserve based on our historical experiences and

61

anticipated warranty claims known at the time of estimation. If actual warranty costs differ significantly from our estimates, revisions to the estimated warranty accrual would be required and any such adjustments could be material.

Accounting for income taxes

We are subject to income taxes in a number of jurisdictions. We must make certain estimates and judgments in determining income tax expense for financial statement purposes. These estimates and judgments occur in the calculation of tax credits, benefits and deductions, and in the calculation of certain tax assets and liabilities which arise from differences in the timing of recognition of revenue and expense for tax and financial statement purposes, as well as interest and penalties related to uncertain tax positions. There are many transactions and calculations for which the ultimate tax determination is uncertain during the ordinary course of business. We establish accruals for certain tax contingencies based on estimates of whether additional taxes may be due. While the final tax outcome of these matters may differ from the amounts that were initially recorded, such differences will impact the income tax and deferred tax provisions in the period in which such determination is made. As a result, significant changes to these estimates may result in an increase or decrease to our tax provision in a subsequent period.

Significant management judgment is also required in determining whether deferred tax assets will be realized in full or in part. When it is more likely than not that all or some portion of specific deferred tax assets such as net operating losses or foreign tax credit carryforwards will not be realized, a valuation allowance must be established for the amount of the deferred tax assets that cannot be realized. We consider all available positive and negative evidence on a jurisdiction-by-jurisdiction basis when assessing whether it is more likely than not that deferred tax assets are recoverable. We consider evidence such as our past operating results, the existence of cumulative losses in recent years and our forecast of future taxable income. We will maintain a partial valuation allowance equal to the state research and development credit carryforwards until sufficient positive evidence exists to support reversal of the valuation allowance.

We have not provided for withholding taxes on the undistributed earnings of our foreign subsidiaries because we intend to reinvest such earnings indefinitely. As of June 30, 2021, the cumulative amount of undistributed earnings of our foreign subsidiaries considered permanently reinvested was $179.2 million. The determination of the unrecognized deferred tax liability on these earnings is not practicable. Should we decide to remit this income to the Bermuda parent company in a future period, our provision for income taxes may increase materially in that period.

The Financial Accounting Standards Board ("FASB") has issued guidance which clarifies the accounting for income taxes by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. The minimum threshold is defined as a tax position that is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit to be recognized is measured as the largest amount of benefit that is greater than fifty percent likely to be realized upon ultimate settlement. The calculation of our tax liabilities involves dealing with uncertainties in the application of complex tax law and regulations in a multitude of jurisdictions. Although the guidance on the accounting for uncertainty in income taxes prescribes the use of a recognition and measurement model, the determination of whether an uncertain tax position has met those thresholds will continue to require significant judgment by management. If the ultimate resolution of tax uncertainties is different from what is currently estimated, a material impact on income tax expense could result.

Our provision for income taxes is subject to volatility and could be adversely impacted by changes in earnings or tax laws and regulations in various jurisdictions. We are subject to the continuous examination of our income tax returns by the Internal Revenue Service and other tax authorities. We regularly assess the likelihood of adverse outcomes resulting from these examinations to determine the adequacy of our provision for income taxes. There can be no assurance that the outcomes from these continuous examinations will not have an adverse effect on our operating results and financial condition. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will impact the provision for income taxes in the period in which such determination is made. The provision for income taxes includes the impact of changes to reserves, as well as the related net interest and penalties.

Share-based compensation expense

We maintain an equity-settled, share-based compensation plan to grant restricted share units and stock options. We recognize share-based compensation expense based on the estimated fair value of the awards, using the accelerated attribution method. The fair value of restricted share units is based on the fair value of the Company's common share on the date of grant. For restricted stock awards subject to market conditions, the fair value of each restricted stock award is estimated at the date of grant using the Monte-Carlo pricing model. Share-based compensation expense is significant to the consolidated financial

62

statements and is calculated using our best estimates, which involve inherent uncertainties and the application of management's judgment. The Black-Scholes option valuation model requires the input of subjective assumptions, including the expected term and stock price volatility. In addition, judgment is also required in estimating the number of stock-based awards that are expected to be forfeited. Forfeitures are estimated based on historical experience at the time of grant. Changes in estimated forfeitures are recognized in the period of change and impact the amount of stock compensation expenses to be recognized in future periods, which could be material if actual results differ significantly from estimates.

Estimated Useful Lives for Property, Plant and Equipment and Intangible Assets

Property, plant and equipment are recorded at cost and are depreciated using the straight-line method over estimated useful lives of the assets. Patents and exclusive technology rights purchased from third parties are amortized on a straight-line basis over their estimated useful lives of three to seven years. Trade name and customer relationships acquired in a business combination are recognized at fair values at the acquisition date and amortized on a straight-line basis over their estimated economic lives of three years and four years, respectively.

Recently Issued Accounting Pronouncements

See Note 1 of the Notes to the consolidated financial statements under Item 15 in this Annual Report on Form 10-K for a full description of recent accounting pronouncements, including the expected dates of adoption and estimated effects on results of operations and financial condition.

63

Item 7A.Quantitative and Qualitative Disclosures About Market Risk

Foreign currency risk

We and our principal subsidiaries use U.S. dollars as our functional currency because most of the transactions are conducted and settled in U.S. dollars. All of our revenue and a significant portion of our operating expenses are denominated in U.S. dollars. The functional currency for our in-house packaging and testing facilities in China is U.S. dollars and a significant portion of our capital expenditures are denominated in U.S. dollars. However, foreign currencies are required to fund our overseas operations, primarily in Taiwan and China. Operating expenses of overseas operations are denominated in their respective local currencies. In order to minimize exposure to foreign currencies, we maintained cash and cash equivalent balances in foreign currencies, including Chinese Yuan (“RMB”) as operating funds for our foreign operating expenses. For our subsidiaries which use the local currency as the functional currency, including the JV Company, the results and financial position are translated into U.S. dollar using exchange rates at balance sheet dates for assets and liabilities and using average exchange rates for income and expenses items. The resulting translation differences are presented as a separate component of accumulated other comprehensive income (loss) and noncontrolling interest in the consolidated statements of equity. Our management believes that our exposure to foreign currency translation risk is not significant based on a 10% sensitivity analysis in foreign currencies due to the fact that the net assets denominated in foreign currencies pertaining to foreign operations, principally in Taiwan and China, are not significant to our consolidated net assets.

Interest rate risk

Our interest-bearing assets comprise mainly interest-bearing short-term bank balances. We manage our interest rate risk by placing such balances in instruments with various short-term maturities. Borrowings expose us to interest rate risk. Borrowings are drawn down after due consideration of market conditions and expectation of future interest rate movements. As of June 30, 2021, we had $136.0 million outstanding under our loan with the Bank and $29.4 million outstanding under our capital leases, which were subject to fluctuations in interest rates. For the year ended June 30, 2021, a hypothetical 10% increase in the interest rate could result in $0.7 million additional annual interest expense. The hypothetical assumptions made above will be different from what actually occurs in the future. Furthermore, the computations do not anticipate actions that may be taken by our management should the hypothetical market changes actually occur over time. As a result, actual impacts on our results of operations in the future will differ from those quantified above.

Commodity Price Risk

We are subject to risk from fluctuating market prices of certain commodity raw materials, particularly gold, that are used in our manufacturing process and incorporated into our end products. Supplies for such commodities may from time-to-time become restricted, or general market factors and conditions may affect the pricing of such commodities. Over the past few years, the price of gold increased significantly and certain of our supply chain partners assess surcharges to compensate for the rising commodity prices. We have been converting some of our products to use copper wires instead of gold wires. Our results of operations may be materially and adversely affected if we have difficulty obtaining these raw materials, the quality of available raw materials deteriorates, or there are significant price changes for these raw materials. For periods in which the prices of these raw materials are rising, we may be unable to pass on the increased cost to our customers which would result in decreased margins for the products in which they are used and could have a material adverse effect on our net earnings. We also may need to record losses for adverse purchase commitments for these materials in periods of declining prices. We do not enter into formal hedging arrangements to mitigate against commodity risk. We estimate that a 10% increase or decrease in the costs of raw materials subject to commodity price risk, such as gold, would decrease or increase our current year's net earnings by $0.6 million, assuming that such changes in our costs have no impact on the selling prices of our products and that we have no pending commitments to purchase metals at fixed prices.

64

Item 8.Financial Statements and Supplementary Data

See Part IV, Item 15 "Exhibits and Financial Statement Schedules" for our consolidated financial statements and the notes and schedules thereto filed as part of this annual report.

Selected Quarterly Consolidated Financial Data

The following tables present our unaudited consolidated financial information for each of the eight quarters in the period ended June 30, 2021. Net income (loss) per share for the four quarters of each fiscal year may not sum to the total for the fiscal year because of difference in the number of shares outstanding during each period. The operating results for any quarter should not be relied upon as necessarily indicative of results for any future period. We expect our quarterly operating results to fluctuate in future periods due to a variety of reasons, including those discussed in Item 1A. “Risk Factors.”

Quarter Ended

(in thousands, except per share data)

Quarter Ended

(in thousands, except per share data)

Item 9.Changes in and Disagreements with Accountants on Accounting and Financial Disclosure

None

65

Item 9A.Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, (the “Exchange Act”)), as of the end of the period covered by this report. Based on that evaluation, the Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures as of June 30, 2021 have been designed and are functioning effectively to provide reasonable assurance that the information required to be disclosed in the reports that we file or submit under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SEC's rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer and Chief Financial Officer, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure.

Management's Annual Report on Internal Control over Financial Reporting

Our management, including our Chief Executive Officer and Chief Financial Officer, is responsible for establishing and maintaining adequate internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act). Our internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of our financial statements for external purposes in accordance with generally accepted accounting principles, and includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of our assets; (2) provide reasonable assurance that transactions are recorded to permit preparation of financial statements in accordance with generally accepted accounting principles, and that our receipts and expenditures are made only in accordance with authorizations of our management and directors; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on our financial statements.

Our management conducted an assessment of the effectiveness of our internal control over financial reporting based on the criteria set forth in Internal Control - Integrated Framework issued by the Committee of Sponsoring Organizations of the Treadway Commission (2013 framework), as amended from time to time. Based on the assessment, our management has concluded that our internal control over financial reporting was effective as of June 30, 2021 to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements in accordance with U.S. GAAP.

The effectiveness of the Company's internal control over financial reporting as of June 30, 2021 has been audited by BDO, USA LLP, an independent registered public accounting firm, as stated in their report, included on the following page.

Limitation on the Effectiveness of Controls

While our disclosure controls and procedures and internal control over financial reporting are designed to provide reasonable assurance that their respective objectives will be met, we do not expect that our disclosure controls and procedures or our internal control over financial reporting are or will be capable of preventing or detecting all errors and all fraud. Any control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that the control system's objectives will be met.

Changes in Internal Control Over Financial Reporting

There were no changes in our internal control over financial reporting that occurred during the quarter ended June 30, 2021 that have materially affected or are reasonably likely to materially affect, our internal control over financial reporting.

66

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Shareholders and Board of Directors

Alpha and Omega Semiconductor Limited

Sunnyvale, California

Opinion on Internal Control over Financial Reporting

We have audited Alpha and Omega Semiconductor Limited (a Bermuda corporation) (the “Company’s”) internal control over financial reporting as of June 30, 2021, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (the “COSO criteria”). In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of June 30, 2021, based on the COSO criteria.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the consolidated balance sheets of the Company as of June 30, 2021 and 2020, the related consolidated statements of operations, comprehensive income (loss), stockholders’ equity, and cash flows for each of the three years in the period ended June 30, 2021, and the related notes and schedules and our report dated August 30, 2021 expressed an unqualified opinion thereon.

Basis for Opinion

The Company’s management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Item 9A, Management’s Report on Internal Control over Financial Reporting. Our responsibility is to express an opinion on the Company’s internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit of internal control over financial reporting in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audit also included performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

/s/ BDO USA, LLP

San Jose, California

August 30, 2021

67

Table of Contents

Item 9B.Other Information

None

68

PART III

Certain information required by Part III is omitted from this Annual Report on Form 10-K because we intend to file our definitive proxy statement for our next annual general meeting of shareholders, pursuant to Regulation 14A of the Securities Exchange Act of 1934, as amended (the “2021 Proxy Statement”), no later than 120 days after the end of fiscal year 2021, and certain information to be included in the 2021 Proxy Statement is incorporated herein by reference.

Item 10.Directors, Executive Officers and Corporate Governance

The information required by this item concerning our directors, executive officers, Section 16 compliance and corporate governance matters is contained in part under the caption "Business - Executive Officers" in Part I of this report, and the remainder is incorporated by reference to the information set forth in the sections titled “Election of Directors” and “Delinquent Section 16(a) Reports” in the 2021 Proxy Statement.

Item 11.Executive Compensation

The information required by this item regarding executive compensation is incorporated by reference from the information set forth under the captions “Compensation of Non-Employee Directors” and “Executive Compensation,” in the 2021 Proxy Statement.

Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters

The information required by this item regarding security ownership of certain beneficial owners and management is incorporated by reference to the information set forth in the section titled “Security Ownership of Certain Beneficial Owners and Management” and “Equity Compensation Plan Information” in the 2021 Proxy Statement.

Item 13.Certain Relationships and Related Transactions, and Director Independence

The information required by this item regarding related party transactions and director independence is incorporated by reference from the information set forth under the captions “Board of Directors and Committees of the Board", and “Related Party Transactions" in the 2021 Proxy Statement.

Item 14.Principal Accounting Fees and Services

The information required by this item regarding principal accountant fees and services is incorporated by reference from the information set forth under the caption “Principal Accounting Fees and Services” in the 2021 Proxy Statement.

69

PART IV

Item 15.Exhibits and Financial Statement Schedules

(a) The following documents are filed as part of this annual report:

(1) Consolidated Financial Statements. The index to the consolidated financial statements is below.

Item Page

Report of Independent Registered Public Accounting Firm 71

Consolidated Balance Sheets 73

Consolidated Statements of Operations 74

Consolidated Statements of Comprehensive Income (Loss) 75

Consolidated Statements of Equity 76

Consolidated Statements of Cash Flows 77

Notes to the Consolidated Financial Statements 79

(2) Financial Statement Schedules.

Schedule I - Condensed Financial Information of Registrant 112

Schedule II - Valuation and Qualifying accounts 117

(b) Exhibits

The exhibits listed on the accompanying Index to Exhibits in Item 15(b) below are filed as part of, or hereby incorporated by reference into, this Annual Report on Form 10-K.

70

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Shareholders and Board of Directors

Alpha and Omega Semiconductor Limited

Sunnyvale, California

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of Alpha and Omega Semiconductor Limited (a Bermuda Corporation) (the “Company”) as of June 30, 2021 and 2020, the related consolidated statements of operations, comprehensive income (loss), stockholders’ equity, and cash flows for each of the three years in the period ended June 30, 2021, and the related notes and schedules (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company at June 30, 2021 and 2020, and the results of its operations and its cash flows for each of the three years in the period ended June 30, 2021, in conformity with accounting principles generally accepted in the United States of America.

We also have audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (“PCAOB”), the Company's internal control over financial reporting as of June 30, 2021, based on criteria established in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”) and our report dated August 30, 2021 expressed an unqualified opinion thereon.

Change in Accounting Principle

As discussed in Note 1 to the consolidated financial statements, the Company has changed its accounting method for accounting for leases in fiscal year 2020 due to the adoption of Topic 842: Leases, using a modified retrospective approach.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that: (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matter does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing separate opinions on the critical audit matter or on the accounts or disclosures to which it relates.

Valuation of Inventories

As described in Note 1 to the consolidated financial statements, the Company’s consolidated inventories balance, which is stated at lower of cost (determined on a first-in, first-out basis) or net realizable value, was $154.3 million as of June 30, 2021. The valuation of inventories is made based on the Company’s periodic review of inventory quantities on hand as compared with sales forecasts, historical usage, aging of inventories, production yield levels and current product selling prices.

71

We identified the valuation of inventories as a critical audit matter due to the significant judgment and estimates required by Management. Determining whether a decline in value has occurred requires Management’s complex judgments related to (i) sales forecasts based on historical sales and expected future orders, and (ii) obsolescence of certain products based on changes in technology and demand. Auditing these judgments is especially challenging and involved subjective auditor judgment due to fluctuations in sales trends and evolving customer demands.

The primary procedures we performed to address this critical audit matter included:

•Evaluating the completeness and accuracy of data used in the determination of the valuation of inventories by testing the completeness of the inventories analyzed, the inputs used in the analysis, and recalculating the estimated valuation of inventories based on management’s stated methodology.

•Analyzing the reasonableness of the methodology management uses to estimate the valuation of inventories by evaluating quantitative and qualitative factors considered by management in estimating the inventory reserve.

•Evaluating the reasonableness of Management's assumptions related to future demand by (i) performing retrospective review of the Company’s prior year estimates to actual results, (ii) evaluating the reasonableness of sales forecasts by comparing to current backlog and historical sales data used in the analysis, and (iii) considering additional facts and circumstances that could impact the determination of the valuation of inventories including, assessing changes in macroeconomic conditions.

/s/ BDO USA, LLP

We have served as the Company's auditor since 2018.

San Jose, California

August 30, 2021

72

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

CONSOLIDATED BALANCE SHEETS

(in thousands, except par value per share)

ASSETS

Current assets:

Operating lease right-of-use assets, net 34,660 32,948

LIABILITIES AND EQUITY

Current liabilities:

Income taxes payable - long-term 1,319 903

Deferred income tax liabilities 2,448 496

Finance lease liabilities - long-term 12,698 26,842

Operating lease liabilities - long-term 30,440 30,254

Commitments and contingencies (Note 13)

Equity:

Preferred shares, par value $0.002 per share:

Common shares, par value $0.002 per share:

Accumulated other comprehensive income (loss) 2,315 (5,127)

Total Alpha and Omega Semiconductor Limited shareholders’ equity 373,205 293,689

The accompanying notes are an integral part of these consolidated financial statements.

73

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

CONSOLIDATED STATEMENTS OF OPERATIONS

(in thousands, except per share data)

Year Ended June 30,

Operating expenses:

Impairment of privately-held investment — 600 —

Interest expense and other income (loss), net (3,852) (3,972) (6,362)

Net income (loss) including noncontrolling interest 56,289 (18,257) (14,638)

Net loss attributable to noncontrolling interest (1,827) (11,661) (16,499)

The accompanying notes are an integral part of these consolidated financial statements.

74

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS)

(in thousands)

Year ended June 30,

Other comprehensive income (loss), net of tax

The accompanying notes are an integral part of these consolidated financial statements.

75

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

CONSOLIDATED STATEMENTS OF EQUITY

(in thousands)

Shares Amount Shares Amount Shares Amount

Contributions by noncontrolling interest — — — — — — — — — — 24,000 24,000

Exercise of common stock options and release of RSUs — — 562 1 — — 24 — — 25 25

Share-based compensation expense — — — — — — 9,854 — — 9,854 — 9,854

The accompanying notes are an integral part of these consolidated financial statements.

76

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

Year Ended June 30,

Cash flows from operating activities

(Gain) loss on disposal of property and equipment 426 (102) 21

Impairment of privately-held investment — 600 —

Changes in assets and liabilities:

Cash flows from investing activities

Purchases of property and equipment in JV Company (49,985) (20,009) (76,049)

Purchases of intangible assets — — (405)

Proceeds from sale of property and equipment 42 295 21

Government grant related to equipment in JV Company 119 1,254 —

Cash flows from financing activities

Proceeds from investment by noncontrolling interest — — 24,000

Withholding tax on restricted stock units (6,924) (1,509) (2,028)

Proceeds from exercise of stock options and ESPP 5,092 3,350 3,018

Payments for repurchase of common shares — — (1,501)

77

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in thousands)

Year Ended June 30,

Supplemental disclosures of cash flow information:

Supplemental disclosures of non-cash investing and financing information:

Property and equipment purchased but not yet paid $ 20,204 $ 17,370 $ 44,799

Reissuance of treasury stock $ 120 $ 56 $ 51

The accompanying notes are an integral part of these consolidated financial statements.

78

ALPHA AND OMEGA SEMICONDUCTOR LIMITED

NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

1. The Company and Significant Accounting Policies

The Company

Alpha and Omega Semiconductor Limited and its subsidiaries (the “Company”, "AOS", "we" or "us") design, develop and supply a broad range of power semiconductors. The Company's portfolio of products targets high-volume applications, including personal computers, graphic cards, flat panel TVs, home appliances, smart phones, battery packs, quick chargers, home appliances, consumer and industrial motor controls and power supplies for TVs, computers, servers and telecommunications equipment. The Company conducts its operations primarily in the United States of America (“USA”), Hong Kong, China, and South Korea.

Basis of Preparation

The consolidated financial statements include the accounts of the Company, its wholly-owned subsidiaries, and a subsidiary in which it has a controlling interest after elimination of inter-company balances and transactions. The consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America ("U.S. GAAP").

Joint Venture

On March 29, 2016, the Company entered into a joint venture contract (the “JV Agreement”) with two investment funds owned by the Municipality of Chongqing (the “Chongqing Funds”), pursuant to which the Company and the Chongqing Funds formed a joint venture, (the “JV Company”), for the purpose of constructing and operating a power semiconductor packaging, testing and 12-inch wafer fabrication facility in the Liangjiang New Area of Chongqing, China (the “JV Transaction”). As of June 30, 2021, the Company owns 51%, and the Chongqing Funds own 49%, of the equity interest in the JV Company. The Joint Venture is accounted under the provisions of the consolidation guidance since the Company has controlling financial interest. If both parties agree that the termination of the JV Company is the best interest of each party or the JV Company is bankrupt or insolvent where either party may terminate early, after paying the debts of the JV Company, the remaining assets of the JV Company shall be paid to the Chongqing Funds to cover the principal of its total paid-in contributions plus interest at 10% simple annual rate prior to distributing the balance of the JV Company's assets to the Company. The JV Company has reached its targeted production of assembly and testing.

Certain Significant Risks and Uncertainties Related to Outbreak of Coronavirus Disease 2019 (“COVID-19”)

The COVID-19 pandemic has had and continues to have a negative impact on business and economic activities across the globe. As a result of the COVID-19 pandemic and the global economic downturn and changing consumer behaviors due to various restrictions imposed by governments, the Company has experienced shifting market trends, including an increasing demand in the markets for notebooks, PCs, gaming devices and other products. While the Company has recently benefited from the increasing demand of PC related products, there is no guarantee that this trend will continue, and such increasing demand may discontinue or decline as government authorities relax COVID-19 related restrictions and consumer behaviors change. Furthermore, as the COVID-19 pandemic continues and global economic downturn and high unemployment persists, consumer spending may slow down substantially, in which case the Company may experience a significant decline of customer orders for its products, including those designed for PC-related applications, and such decline will adversely affect its financial conditions and results of operations. The extent to which the COVID-19 pandemic may impact the Company's business will depend on future developments which are uncertain, such as the duration of the outbreak, travel restrictions, governmental mandates issued to mitigate the spread of the disease, business closures, economic disruptions, and the effectiveness of actions taken to contain and treat the virus. Accordingly, the COVID-19 pandemic may have a negative impact on the Company's sales and results of operations, the size and duration of which is difficult to predict.

Risks and Uncertainties

The Company is subject to certain risks and uncertainties. The Company believes changes in any of the following areas could have a material adverse effect on the Company's future financial position or results of operations or cash flows: new product development, including market receptiveness, operation of in-house manufacturing facilities, operation of the JV Company, litigation or claims against the Company based on intellectual property, patent, product regulatory or other factors,

79

competition from other products, general economic conditions, the ability to attract and retain qualified employees, the ability to successfully operate joint venture and ultimately to sustain profitable operations, risks associated with doing business in China, and ability to diversify products and develop digital business; the general state of the U.S., China and world economies; the highly cyclical nature of the industries the Company serves; the loss of any of its larger customers; restrictions on the Company’s ability to sell to foreign customers due to trade laws, regulations and requirements; disruptions of the supply chain of components needed for our products; ability to obtain additional financing; inability to meet certain debt covenants; fundamental changes in the technology underlying the Company’s products; successful and timely completion of product design efforts; and new product design introductions by competitors. Additional risks and uncertainties that the Company is unaware of, or that the Company currently believes are not material, may also become important factors that adversely affect its business.

The semiconductor industry is characterized by rapid technological change, competition, competitive pricing pressures and cyclical market patterns. The Company's financial results are affected by a wide variety of factors, including general economic conditions specific to the semiconductor industry and the Company's particular market, such as the PC markets, the timely implementation of new products, new manufacturing process technology and the ability to safeguard patents and intellectual property in a rapidly evolving market. In addition, the semiconductor market has historically been cyclical and subject to significant economic downturns. As a result, the Company may experience significant period-to-period fluctuations in operating results due to the factors mentioned above or other factors.

The Company's business model allocates its wafer manufacturing requirements to both in-house capacity and selected third-party foundries. The Company also deploys and implements its proprietary power discrete processes and equipment at third-party foundries to maximize the performance and quality of its products.

The Company's revenue may be impacted by its ability to utilize wafer production and packaging and testing capacity from its in-house facilities and obtain adequate wafer supplies from third-party foundries. Currently the Company's main third-party foundry is Shanghai Hua Hong Grace Electronic Company Limited, or HHGrace, located in Shanghai, China. HHGrace has been manufacturing wafers for the Company since 2002. HHGrace manufactured approximately 11.5%, 12.7% and 14.1% of the wafers used in the Company's products for the fiscal years ended June 30, 2021, 2020 and 2019, respectively. Although the Company believes that its volume of production allows the Company to secure favorable pricing and priority in allocation of capacity in its third-party foundries, if the foundries' capacities are constrained due to market demands, HHGrace, together with other foundries from which the Company purchases wafers, may not be willing or able to satisfy all of the Company's manufacturing requirements on a timely basis and/or at favorable prices. The Company is also subject to the risks of service disruptions and raw material shortages by its foundries. Such disruptions, shortages and price increases could harm the Company's operating results. In addition, manufacturing facilities' capacity affects the Company's gross margin because the Company has certain fixed costs associated with its Oregon fab and the JV Company, as well as in-house packaging and testing facilities. If the Company fails to utilize its manufacturing facilities' capacity at a desirable level, its financial condition and results of operations will be adversely affected.

Use of Estimates

The preparation of the consolidated financial statements in conformity with U.S. GAAP requires the Company to make estimates, judgments and assumptions that affect the reported amounts of assets, liabilities, revenue and expenses. To the extent there are material differences between these estimates and actual results, the Company's condensed consolidated financial statements will be affected. On an ongoing basis, the Company evaluates the estimates, judgments and assumptions including those related to stock rotation returns, price adjustments, allowance for doubtful accounts, inventory reserves, warranty accrual, income taxes, leases, share-based compensation, recoverability of and useful lives for property, plant and equipment and intangible assets, as well as the economic implications of the COVID-19 pandemic.

Foreign Currency Transactions and Translation

Most of the Company's principal subsidiaries use U.S. dollars as their functional currency because their transactions are primarily conducted and settled in U.S. dollars. All of their revenues and a significant portion of their operating expenses are denominated in U.S. dollars. The functional currencies for the Company's in-house packaging and testing facilities in China are U.S. dollars, and a majority of their capital expenditures are denominated in U.S. dollars. Foreign currency transactions are translated into the functional currencies using the exchange rates prevailing at the dates of the transactions. Foreign exchange gains and losses, resulting from the settlement of such transactions and from the re-measurement of monetary assets and liabilities denominated in foreign currencies using exchange rates at balance sheet date and non-monetary assets and liabilities using historical exchange rates, are recognized in the consolidated statements of operations.

For the Company's subsidiaries which use the local currency as their functional currency, including the JV Company, their results and financial position are translated into U.S. dollars using exchange rates at balance sheet dates for assets and liabilities

80

and using average exchange rates for income and expenses items. The resulting translation differences are presented as a separate component of accumulated other comprehensive income (loss) and noncontrolling interest in the consolidated statements of equity.

Cash, Cash Equivalents and Restricted Cash

Cash and cash equivalents primarily consist of cash on hand and short-term bank deposits with original maturities of three months or less. Cash equivalents are highly liquid investments with stated maturities of three months or less as of the dates of purchase. The carrying amounts reported for cash and cash equivalents are considered to approximate fair values based upon their short maturities.

Cash and cash equivalents are maintained with reputable major financial institutions. If, due to current economic conditions or other factors, one or more of the financial institutions with which the Company maintains deposits fails, the Company's cash and cash equivalents may be at risk. Deposits with these banks may exceed the amount of insurance provided on such deposits; however, these deposits typically may be redeemed upon demand and, therefore, bear minimal risk.

As a condition of the loan arrangements, the Company is required to keep a compensating balance at the issuing bank (see Note 5). In addition, the Company maintains restricted cash in connection with cash balances temporarily restricted for regular business operations, including the possibility of a dispute with a vendor. These balances have been excluded from the Company’s cash and cash equivalents balance and are classified as restricted cash in the Company’s consolidated balance sheets. As of June 30, 2021 and 2020, the amount of restricted cash was $2.4 million and $4.2 million, respectively.

Accounts Receivable, net

The allowance for doubtful accounts is based on assessment of the collectability of accounts receivable from customers. The Company reviews the allowance by considering factors such as historical collection experience, credit quality, age of the accounts receivable balances and current economic conditions that may affect a customer's ability to pay. The Company writes off a receivable and charges against its recorded allowance when it has exhausted its collection efforts without success.

Fair Value Measurements

Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Valuation techniques used to measure fair value must maximize the use of observable inputs and minimize the use of unobservable inputs. The fair value hierarchy is based on three levels of inputs, of which the first two are considered observable and the last unobservable, that may be used to measure fair value, which are the following:

•Level 1 - Quoted prices in active markets for identical assets or liabilities.

•Level 2 - Inputs other than Level 1 that are observable, either directly or indirectly, such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

•Level 3 - Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities.

Fair Value of Financial Instruments

The fair value of cash equivalents is based on observable market prices and have been categorized in Level 1 in the fair value hierarchy. Cash equivalents consist primarily of short-term bank deposits. The carrying values of financial instruments such as cash and cash equivalents, accounts receivable and accounts payable approximate their carrying values due to their short-term maturities. The carrying value of the company's debt is considered a reasonable estimate of fair value which is estimated by considering the current rates available to the Company for debt of the same remaining maturities, structure and terms of the debts.

Inventories

The Company carries inventories at the lower of cost (determined on a first-in, first-out basis) or net realizable value. Cost includes semiconductor wafer and raw materials, labor, depreciation expenses and other manufacturing expenses and overhead, and packaging and testing fees paid to third parties if subcontractors are used. Valuation of inventories are based on the Company's periodic review of inventory quantities on hand as compared with its sales forecasts, historical usage, aging of

81

inventories, production yield levels and current product selling prices. If actual market conditions are less favorable than those forecasted by management, additional future inventory write-downs may be required that could adversely affect the Company's operating results. Adjustments to inventory once established are not reversed until the related inventory has been sold or scrapped.

Property, Plant and Equipment

Property, plant and equipment are stated at historical cost less accumulated depreciation. Historical cost includes expenditures that are directly attributable to the acquisition of the items and the costs incurred to make the assets ready for their intended use.

Depreciation is provided for on a straight-line basis over the estimated useful lives of the related assets as follows:

Building 20 to 30 years

Manufacturing machinery and equipment 8 to 15 years

Equipment and tooling 5 years

Computer hardware and software 3 to 5 years

Office furniture and equipment 5 years

Leasehold and building improvements 2 to 20 years

Land use rights 50 years

There is no private land ownership in China. Individuals and companies are permitted to acquire land use rights for a specific purpose. In March 2017, the JV Company received the necessary land use right certificate from the PRC government. The land use rights will expire on November 30, 2066.

Equipment and construction in progress represent equipment received but the necessary installation has not been fully performed or building construction and leasehold improvements have been started but not yet completed. Equipment and construction in progress are stated at cost and transferred to respective asset class when fully completed and ready for their intended use.

Internal-use software development costs are capitalized to the extent that the costs are directly associated with the development of identifiable and unique software products controlled by the Company that will probably generate economic benefits beyond one year. Costs incurred during the application development stage are required to be capitalized. The application development stage is characterized by software design and configuration activities, coding, testing and installation. Training costs and maintenance are expensed as incurred, while upgrades and enhancements are capitalized if it is probable that such expenditures will result in additional functionality. Costs include employee costs incurred and fees paid to outside consultants for the software development and implementation. Internally developed software is amortized over its estimated useful life of three to five years starting from the date when it is ready for its intended use.

Gains and losses on disposals are determined by comparing the proceeds with the carrying amount and are recognized as selling, general and administrative expenses in the consolidated statements of operations. Costs of maintenance and repairs that do not improve or extend the lives of the respective assets are expensed as incurred.

Government Grants

The Company occasionally receives government grants that provide financial assistance for certain eligible expenditures in China. These grants include reimbursements on interest expense on bank borrowings, payroll tax credits, credit for property, plant and equipment in a particular geographical location, employment credits, , as well as business expansion credits. Government grants are not recognized until there is reasonable assurance that the Company will comply with the conditions attaching to it, and that the grant will be received. The Company records such grants either as a reduction of the related expense, a reduction of the cost of the related asset, or as other income depending upon the nature of the grant. As a result of such grants, during the fiscal year ended June 30, 2021, the Company reduced interest expense by $3.0 million, property, plant and equipment by $0.1 million, and operating expenses by $3.7 million. During the fiscal year ended June 30, 2020, the Company reduced interest expense by $6.1 million, property, plant and equipment by $1.3 million, and operating expenses by $4.7 million. During the fiscal year ended June 30, 2019, the Company reduced interest expenses by $0.3 million.

Long-lived Assets

82

The Company evaluates its long-lived assets for impairment whenever events or changes indicate that the carrying amount of such assets may not be recoverable. Due to the COVID-19 pandemic, the Company assessed the changes in circumstances that occurred during the March and June 2020 quarters. These factors included continued operating losses, a decrease in the Company's share price in February and March of 2020, which reduced its market capitalization, expectation of lower business growth for the coming quarters, increased and prolonged economic and regulatory uncertainty in the global economies, and the expectation of higher supply chain costs and increased competition. Therefore, the Company performed a recoverability test by comparing the sum of the estimated undiscounted future cash flows of its long-lived assets to their carrying amount as of June 30, 2020. Some of the more significant assumptions used in the estimated future cash flows involve net sales, cost of goods sold, operating expenses, working capital, capital expenditures, income tax rates, long-term growth rates that appropriately reflect the risks inherent in the future cash flow stream and terminal value. The Company selected the assumptions used in the financial forecasts by referencing to historical data, supplemented by current and anticipated market conditions, estimated product growth rates and management's plans. These estimated future cash flows were consistent with those the Company uses in its internal planning. The result of the recoverability test indicated that the sum of the expected future cash flows (undiscounted and without interest charges) was greater than the carrying amount of the long-lived assets. Therefore, the Company concluded that the carrying amount of the long-lived assets is recoverable. There was no impairment of long-lived assets for fiscal years 2021, 2020 and 2019.

Revenue Recognition

The Company determines revenue recognition through the following steps: (1) identification of the contract with a customer; (2) identification of the performance obligations in the contract; (3) determination of the transaction price; (4) allocation of the transaction price to the performance obligations in the contract; and (5) recognition of revenue when, or as, a performance obligation is satisfied. The Company recognizes product revenue at a point in time when product is shipped to the customer, net of estimated stock rotation returns and price adjustments that it expects to provide to certain distributors. The Company presents revenue net of sales taxes and any similar assessments. Our standard payment terms range from 30 to 90 days.

The Company sells its products primarily to distributors, who in turn sell the products globally to various end customers. The Company allows stock rotation returns from certain distributors. Stock rotation returns are governed by contract and are limited to a specified percentage of the monetary value of products purchased by distributors during a specified period. The Company records an allowance for stock rotation returns based on historical returns and individual distributor agreements. The Company also provides special pricing to certain distributors, primarily based on volume, to encourage resale of the Company's products. Allowance for price adjustments is recorded against accounts receivable and the provision for stock rotation rights is included in accrued liabilities on the consolidated balance sheets.

The Company's performance obligations relate to contracts with a duration of less than one year. The Company elected to apply the practical expedient provided in ASC 606, “Revenue from Contracts with Customers”. Therefore, the Company is not required to disclose the aggregate amount of transaction price allocated to performance obligations that are unsatisfied or partially unsatisfied at the end of the reporting period.

The Company recognizes the incremental direct costs of obtaining a contract, which consist of sales commissions, when control over the products they relate to transfers to the customer. Applying the practical expedient, the Company recognizes commissions as expense when incurred, as the amortization period of the commission asset the Company would have otherwise recognized is less than one year.

Packaging and testing services revenue is recognized at a point in time upon shipment of serviced products to the customer.

Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use ("ROU") assets, current operating lease liabilities and long-term operating lease liabilities on the Company's consolidated balance sheets. Finance leases are included in property, plant and equipment, finance lease liabilities and long-term finance leases liabilities on the consolidated balance sheets.

Operating lease ROU assets and operating lease liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. The Company uses an estimate of its incremental borrowing rate based on the information available at the lease commencement date. The operating lease ROU assets also include any lease payments made and exclude lease incentives. Lease terms may include options to extend or terminate the lease when it is reasonably certain that the Company will exercise such options. Operating lease expense is generally

83

recognized on a straight-line basis over the lease term. Variable lease payments are expensed as incurred and are not included within the operating lease ROU asset and lease liability calculation. The Company does not record leases on the consolidated balance sheet with a term of one year or less. The Company elected to combine its lease and non-lease components as a single lease component for all asset classes.

Product Warranty

The Company provides a standard one-year warranty for the products from the date of purchase by the end customers. The Company accrues for estimated warranty costs at the time revenue is recognized. The Company's warranty obligation is affected by product failure rates, labor and material costs for replacing defective parts, related freight costs for failed parts and other quality assurance costs. The Company monitors its product returns for warranty claims and maintains warranty reserves based on historical experiences and anticipated warranty claims known at the time of estimation.

Shipping and Handling Costs

Shipping and handling costs are included in cost of goods sold.

Research and Development

Research and development costs are expensed as incurred.

Provision for Income Taxes

Income tax expense or benefit is based on income or loss before taxes. Deferred tax assets and liabilities are recognized principally for the expected tax consequences of temporary differences between the tax basis of assets and liabilities and their reported amounts.

The Company is subject to income taxes in a number of jurisdictions. Significant judgment is required in determining the worldwide provision for income taxes. There are many transactions and calculations for which the ultimate tax determination is uncertain during the ordinary course of business. The Company establishes accruals for certain tax contingencies based on estimates of whether additional taxes may be due. While the final tax outcome of these matters may differ from the amounts that were initially recorded, such differences will impact the income tax and deferred tax provisions in the period in which such determination is made.

Significant management judgment is also required in determining whether deferred tax assets will be realized in full or in part. When it is more likely than not that all or some portion of specific deferred tax assets such as net operating losses or research and experimentation tax credit carryforwards will not be realized, a valuation allowance must be established for the amount of the deferred tax assets that cannot be realized. The Company considers all available positive and negative evidence on a jurisdiction-by-jurisdiction basis when assessing whether it is more likely than not that deferred tax assets are recoverable. The Company considers evidence such as our past operating results, the existence of cumulative losses in recent years and our forecast of future taxable income.

The Financial Accounting Standards Board, or FASB, issued guidance which clarifies the accounting for income taxes by prescribing a minimum probability threshold that a tax position must meet before a financial statement benefit is recognized. The minimum threshold is defined as a tax position that is more likely than not to be sustained upon examination by the applicable taxing authority, including resolution of any related appeals or litigation processes, based on the technical merits of the position. The tax benefit to be recognized is measured as the largest amount of benefit that is greater than fifty percent likely to be realized upon ultimate settlement. Although the guidance on the accounting for uncertainty in income taxes prescribes the use of a recognition and measurement model, the determination of whether an uncertain tax position has met those thresholds will continue to require significant judgment by management. If the ultimate resolution of tax uncertainties is different from what is currently estimated, a material impact on income tax expense could result.

The Company's provision for income taxes is subject to volatility and could be adversely impacted by changes in earnings or tax laws and regulations in various jurisdictions. The Company is subject to the continuous examination of our income tax returns by the Internal Revenue Service and other tax authorities. The Company regularly assesses the likelihood of adverse outcomes resulting from these examinations to determine the adequacy of our provision for income taxes. To the extent that the final tax outcome of these matters is different from the amounts recorded, such differences will impact the provision for income taxes in the period in which such determination is made. The provision for income taxes includes the impact of changes to reserves, as well as the related net interest and penalties.

84

Share-based Compensation Expense

The Company maintains an equity-settled, share-based compensation plan to grant restricted share units and stock options. The Company recognizes expense related to share-based compensation awards that are ultimately expected to vest based on estimated fair values on the date of grant. The fair value of restricted share units is based on the fair value of the Company's common share on the date of grant. For restricted stock awards subject to market conditions, the fair value of each restricted stock award is estimated at the date of grant using the Monte-Carlo pricing model. The fair value of stock options is estimated on the date of grant using the Black-Scholes option valuation model. Share-based compensation expense is recognized on the accelerated attribution basis over the requisite service period of the award, which generally equals the vesting period.

The Employee Share Purchase Plan (the "ESPP") is accounted for at fair value on the date of grant using the Black-Scholes option valuation model.

Advertising

Advertising expenditures are expensed as incurred. Advertising expense was $0.4 million, $0.7 million and $0.6 million in the fiscal years ended June 30, 2021, 2020, and 2019, respectively.

Comprehensive Income (Loss)

Comprehensive income (loss) is defined as the change in equity of a business enterprise during a period from transactions and other events and circumstances from non-owner sources. The Company's accumulated other comprehensive income (loss) consists of cumulative foreign currency translation adjustments.

85

Recent Accounting Pronouncements

Recently Issued Accounting Standards not yet adopted

In August 2020, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) No. 2020-06, Debt—Debt with Conversion and Other Options (Subtopic 470-20) and Derivatives and Hedging—Contracts in Entity’s Own Equity (Subtopic 815-40): Accounting for Convertible Instruments and Contracts in an Entity’s Own Equity, which, among other things, provides guidance on how to account for contracts on an entity’s own equity. This ASU simplifies the accounting for certain financial instruments with characteristics of liabilities and equity. Specifically, the ASU eliminated the need for the Company to assess whether a contract on the entity’s own equity (1) permits settlement in unregistered shares, (2) whether counterparty rights rank higher than shareholder’s rights, and (3) whether collateral is required. In addition, the ASU requires incremental disclosure related to contracts on the entity’s own equity and clarifies the treatment of certain financial instruments accounted for under this ASU on earnings per share. For public business entities, the ASU is effective for fiscal years beginning after December 15, 2021, and interim periods within those fiscal years. The Company does not expect the adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows.

In January 2020, the FASB issued ASU No. 2020-01, “Investments - Equity Securities (Topic 321), Investments - Equity Method and Joint Ventures (Topic 323), and Derivatives and Hedging (Topic 815) - Clarifying the Interactions between Topic 321, Topic 323, and Topic 815.” The ASU is based on a consensus of the Emerging Issues Task Force and is expected to increase comparability in accounting for these transactions. ASU 2016-01 made targeted improvements to accounting for financial instruments, including providing an entity the ability to measure certain equity securities without a readily determinable fair value at cost, less any impairment, plus or minus changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. Among other topics, the amendments clarify that an entity should consider observable transactions that require it to either apply or discontinue the equity method of accounting. For public business entities, the amendments in the ASU are effective for fiscal years beginning after December 15, 2020, and interim periods within those fiscal years. The Company does not expect the adoption of this guidance will have a material impact on its consolidated financial position, results of operations or cash flows.

In December 2019, the FASB issued ASU No. 2019-12 “Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes ("ASU 2019-12") by removing certain exceptions to the general principles. The amendments will be effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption of the amendments is permitted. Depending on the amendment, adoption may be applied on a retrospective, modified retrospective or prospective basis. The Company is currently evaluating the impacts of adoption of the new guidance to its consolidated financial statements.

Recently Adopted Accounting Standards

In August 2018, the FASB issued ASU 2018-15 “Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Customer’s Accounting for Implementation Costs Incurred in a Cloud Computing Arrangement That Is a Service Contract" ("ASU 2018-15"). These amendments align the requirements for capitalizing implementation costs incurred in a hosting arrangement that is a service contact with the requirements for capitalizing implementation costs incurred to develop or obtain internal-use software (and hosting arrangements that include an internal-use software license). The accounting for the service element of a hosting arrangement that is a service contract is not affected by these amendments. ASU 2018-15 had no material impact on the Company's consolidated financial statements.

In August 2018, the FASB issued ASU 2018-13, “Fair Value Measurement (Topic 820): Disclosure Framework-Changes to the Disclosure Requirements for Fair Value Measurement ("ASU 2018-13”). ASU 2018-13 amends existing fair value measurement disclosure requirements by adding, changing, or removing certain disclosures. The amendments on changes in unrealized gains and losses, the range and weighted average of significant unobservable inputs used to develop Level 3 fair value measurements, and the narrative description of measurement uncertainty should be applied prospectively for only the most recent interim or annual period presented in the initial fiscal year of adoption. All other amendments should be applied retrospectively to all periods presented upon their effective date. ASU 2018-13 had no material impact on the Company's consolidated financial statements.

In June 2016, the FASB issued ASU 2016-13, "Financial Instruments - Credit Losses (Topic 326). Topic 326 adds to U.S. GAAP the current expected credit loss ("CECL") model, a measurement model based on expected losses rather than incurred losses. Under this new standard, an entity recognizes its estimate of expected credit losses as an allowance. The new standard is also intended to reduce the complexity of U.S. GAAP by decreasing the number of credit loss models that entities use to account for debt instruments. The new guidance significantly changes the accounting for credit losses. The Company adopted

86

ASU 2016-13 using the modified-retrospective approach in the first quarter of fiscal 2021 with no impact to its consolidated financial statements.

The adoption of Topic 326 did not significantly change the Company's approach to the valuation of trade receivables. The Company determines whether there is an expected loss on its accounts receivable by reviewing all available data, including its customers' latest available financial statements, their credit standing and historical collection experience, as well as current and future market and economic conditions. As of June 30, 2021, the allowance for credit losses on the Company's trade receivables remained immaterial.

87

2. Net Income (loss) Per Common Share Attributable to Alpha and Omega Semiconductor Limited

Basic net income (loss) per share is computed using the weighted-average number of common shares outstanding during the period. Diluted net income (loss) per share is computed using the weighted-average number of common shares outstanding, plus potential shares of common stock during the period. Potential shares of common stock include dilutive shares attributable to the assumed exercise of share options, ESPP shares and vesting of RSUs using the treasury stock method and contingent issuances of common shares related to convertible preferred shares, if dilutive. Under the treasury stock method, potential common shares outstanding are not included in the computation of diluted net income per share if their effect is anti-dilutive.

The following table presents the calculation of basic and diluted net income (loss) per share attributable to common shareholders:

Year Ended June 30,

(in thousands, except per share data)

Numerator:

Denominator:

Basic:

Diluted:

Effect of potentially dilutive securities:

Stock options, RSUs and ESPP shares 1,486 — 635

The following potential dilutive securities were excluded from the computation of diluted net income (loss) per share as their effect would have been anti-dilutive:

Year Ended June 30,

(in thousands)

88

3. Concentration of Credit Risk and Significant Customers

The Company manages its credit risk associated with exposure to distributors and direct customers on outstanding accounts receivable through the application of credit approvals, credit ratings and other monitoring procedures. In some instances, the Company also obtains letters of credit from certain customers.

Credit sales, which are mainly on credit terms of 30 to 60 days, are only made to customers who meet the Company's credit standards, while sales to new customers or customers with low credit ratings are usually made on an advance payment basis. The Company considers its financial assets to be of good credit quality because its key distributors and direct customers have long-standing business relationships with the Company and the Company has not experienced any significant bad debt write-offs of accounts receivable in the past. The Company closely monitors the aging of accounts receivable from its distributors and direct customers, and regularly reviews their financial positions, where available.

In the past, the Company shipped its product indirectly to Huawei and its affiliates (collectively, “Huawei”) through distributors. Typically, the Company sold its products to distributors who then sold to original design manufacturers (“ODMs”) that incorporated our products into end applications that were then shipped to Huawei. While distributor point of sale reports summarize distributor sales to ODMs, the Company must make certain assumptions and estimates in order to determine the amount of revenues attributed to indirect shipment to Huawei. During the fiscal year ended June 30, 2019, the estimated revenues attributed to indirect shipment to Huawei were approximately 2% of total revenues. During the period from May 2019 to December 2019, estimated revenues earned by the Company from shipments indirectly made to Huawei were in the range of $11 million to $13 million. See Note 13.

Summarized below are individual customers whose revenue or accounts receivable balances were 10% or higher than the respective total consolidated amounts:

Year Ended June 30,

Percentage of accounts receivable 2021 2020

Customer A 12.4 % *

Customer B 22.1 % *

Customer D * 10.9 %

Customer E * 20.1 %

Customer F * 10.4 %

Customer G * 10.3 %

* Less than 10%

89

4. Balance Sheet Components

Accounts receivable, net

(in thousands)

Less: Allowance for price adjustments (12,415) (30,092)

Less: Allowance for doubtful accounts (30) (30)

Inventories

(in thousands)

Other current assets

(in thousands)

Interest receivable 2,207 —

Other receivables 68 69

90

Property, plant and equipment, net

(in thousands)