Financial Results for Fiscal Q4 Ended June 30, 2022

• Revenue was $194.0 million, an increase of 9.4% from the same quarter last year and a decrease of 4.6% quarter-over-quarter.
• GAAP gross margin was 32.6%, down from 34.2% year-over-year and 35.6% in the prior quarter.
• Non-GAAP gross margin was 33.8%, down from 34.9% from the same quarter last year and down from 36.7% in the prior quarter.
• GAAP operating expenses were $45.1 million, up from $41.2 million in the prior quarter and up from $38.2 million from the same quarter last year.
• Non-GAAP operating expenses were $36.7 million, an increase of $2.7 million from last quarter and an increase of $3.9 million from the same quarter last year.
• GAAP operating income was $18.1 million, as compared to $31.2 million in the prior quarter and $22.4 million from the same quarter last year.
• Non-GAAP operating income was $28.9 million as compared to $40.5 million for the prior quarter and $29.1 million for the same quarter last year.
• GAAP net income per share attributable to AOS was $0.53, compared to $0.71 earnings per share for the same quarter last year and $1.11 for the prior quarter.
• Non-GAAP earnings per share attributable to AOS was $0.95, compared to $0.95 for the same quarter last year and $1.34 for the prior quarter.
• Consolidated cash flow provided by operating activities was $25.7 million, which included $3.4 million of net customer deposits, as compared to $61.8 million in prior quarter, which included $6.4 million of net customer deposits.
• The Company closed the quarter with $314.4 million of cash and cash equivalents.

AOS Chairman and Chief Executive Officer Dr. Mike Chang commented, "Our fiscal Q4 was another strong quarter despite the challenge posed by the COVID lockdown in Shanghai. Once again, we outperformed our guidance midpoint. Revenue was $194 million, an increase of 9% year-over-year. Non-GAAP gross margin was 33.8% and non-GAAP EPS was $0.95. As a reminder, our ability to assemble and ship products was severely limited for most of April due to the city-wide lockdown in Shanghai. Once cleared to restart operations at the end of April, it also took time for our assembly lines to return to full utilization. Our Shanghai facilities are mostly back to normal and are currently operating at full capacity. I want to express my deepest appreciation to our employees once again for their immense sacrifice and unwavering dedication to AOS during these challenging times. We are grateful to have their loyalty and support.”

Dr. Chang continued, "Looking ahead, we are seeing inventory corrections happening in certain consumer end markets. While we are not immune to current global market conditions, as of today, our demand and backlog are still higher than our overall capacity. I believe our strategic position within our sector is resilient thanks to our technology leadership, diversified product portfolio, and strong Tier 1 customer base in all our business segments. In fact, our market share at Tier 1 customers is the highest that it has ever been. The electrification of everything is just getting started, and our power products sit at the forefront of this trend. We are on pace and focused to achieve our one billion dollar annual revenue target in the next couple of years.”

Business Outlook for Fiscal Q1 Ending September 30, 2022

The following statements are based on management's current expectations. These statements are forward-looking, and actual results may differ materially. AOS undertakes no obligation to update these statements.

• Revenue is expected to be $210 million plus or minus $3 million.
• Gross margin is expected to be 33.8% plus or minus 1%. Non-GAAP gross margin is expected to be 35.0% plus or minus 1%. Note that non-GAAP gross margin excludes $1.8 million of estimated share-based compensation charges and $0.8 million of amortization of purchased intangible assets.
• GAAP operating expenses are expected to be in the range of $45.7 million, plus or minus $1 million. Non-GAAP operating expenses are expected to be in the range of $36.5 million plus or minus $1 million. Non-GAAP operating expenses exclude $9.0 million of estimated share-based compensation charges and $0.2 million of estimated legal expenses related to the government investigation.
• Interest expense is expected to be $1.2 million, and
• Tax expense is expected to be $1.2 million to $1.4 million.

Conference Call and Webcast

AOS plans to hold an investor teleconference and live webcast to discuss the financial results for the fiscal fourth quarter and the fiscal year ended June 30, 2022 today, August 10, 2022 at 2:00 p.m. PT / 5:00 p.m. ET. To listen to the live conference call, please dial +1 (844) 200-6205 or +1 (929) 526-1599 if dialing from outside the United States and Canada. The access code is 577380. A live webcast of the call will also be available in the "Events & Presentations" section of the company's investor relations website, http://investor.aosmd.com. The webcast replay will be available for seven days after the live call on the same website. In addition, a copy of the script of management's prepared remarks and a live webcast of the call will also be available in the "Events & Presentations" section of the company's investor relations website, http://investor.aosmd.com.

Forward Looking Statements

This press release contains forward-looking statements that are based on current expectations, estimates, forecasts and projections of future performance based on management's judgment, beliefs, current trends, and anticipated product performance. These forward-looking statements include, without limitation, statements relating to macroeconomic conditions, resumption of production at our Shanghai facilities and continuing impact of COVID-19 pandemic, anticipated earnings power and non-GAAP EPS on an annual basis, our growth opportunities and new markets, our annual revenue target, projected amount of revenue, gross margin, operating income, income tax expenses, net income, and share-based compensation expenses, non-GAAP gross margin, non-GAAP operating expenses, tax expenses, our objectives to achieve revenue target, our ability to gain new customers and design wins, strategic partnership with customers, and other information under the section entitled “Business Outlook for Fiscal Q1 Ending September 30, 2022”. Forward-looking statements involve risks and uncertainties that may cause actual results to differ materially from those contained in the forward-looking statements. These factors include, but are not limited to, the impact of COVID-19 pandemic on our business and the city-wide lockdown in Shanghai; deconsolidation of CQJV; our lack of control over the joint venture in China; difficulties and challenges in executing our diversification strategy into different market segments; new tariffs on goods from China; ordering pattern from distributors and seasonality; changes in regulatory environment and government investigation; our ability to introduce or develop new and enhanced products that achieve market acceptance; decline of PC markets; the actual product performance in volume production; the quality and reliability of our product, our ability to achieve design wins; the general business and economic conditions; the state of semiconductor industry and seasonality of our markets; our ability to maintain factory utilization at a desirable level; and other risks as described in our SEC filings, including our Annual Report on Form 10-K for the fiscal year ended June 30, 2022 to be filed by AOS with the SEC and other periodic reports we filed with the SEC. Other unknown or unpredictable factors or underlying assumptions subsequently proving to be incorrect could cause actual results to differ materially from those in the forward-looking statements. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee future results, level of activity, performance, or achievements. You should not place undue reliance on these forward-looking statements. All information provided in this press release is as of today's date, unless otherwise stated, and AOS undertakes no duty to update such information, except as required under applicable law. The fiscal 2022 financial information reported in this press release is subject to the completion of our annual report which will be reported in our forthcoming Form 10-K to be filed with the SEC.