Applied Optoelectronics Inc

Item 1A. Risk Factors

Investing in our common stock involves a high degree of risk. See Part I, Item 1A, Risk Factors, of our Annual Report on Form 10-K for the year ended December 31, 2024 for a detailed discussion of the risk factors affecting our Company. As of March 31June 30, 2025, there have been no material changes to those risk factors, except as described below.

Recently elevated geopolitical tensions, volatility and uncertainty with respect to international trade policies, including tariffs and export controls, may have a material adverse impact on our business, the markets in which we compete and the world economy.

In recent months since April 2025, the United States and its trading partners have imposed, expanded and revised a wide range of tariffs, reciprocal tariffs, and other trade restrictionsoften with minimal noticedisrupting global trade and affecting a wide spectrum of raw materials, components, and finished goods. U.S.-China trade tensions, in particular, have intensified, resulting in elevated tariff rates and signaling the potential for further measures, including those targeting the semiconductor sector.

T In mid-May, the U.S. administration issued an executive order suspending certain previously announced tariff increases on China and temporarily reinstating a lower baseline tariff for a 90-day period. As of early August, the 90-day suspension is approaching its end, and the U.S. has imposed a 20% temporary tariff on most imports from Taiwan, effective August 7, 2025. The continuation, eU.S. remains engaged in active tariff negotiations with key trading partners, including China and Taiwan, though the final outcomes of these negotiations remain uncertain.

Although we have not been significantly impacted by the increased tariffs imposed on China to date, the continuation, escalation, or expansion of tariffs and other trade barriersas well as heightened geopolitical tensions and increased uncertainty regarding global trade and regulatory policy, particularly involving the United States a, China and ChinaTaiwancould adversely affect our business both directly and indirectly, including through impacts on consumer and business confidence, currency and interest rate volatility, commodity and equity markets, inflation, financing conditions, and broader international economic relations. These developments could materially and adversely affect our revenue, operations, financial condition, cost structure, competitiveness, supply chain logistics, product pricing and demand, and profitability, and could also amplify other risks described in our 2024 Form 10-K.

Although we seek to mitigate the effects of these challenges through pricing adjustments, supply chain diversification, and operational efficiencies, we may not be able to fully offset increased costs or secure timely alternative sources. In addition, customers may resist price increases or seek alternative suppliers, which could adversely affect our sales volumes.

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