Basis of Presentation —The Company’s unaudited interim condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and applicable provisions of the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) regarding interim financial reporting. Certain information and disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted as permitted by the rules and regulations of the SEC. Accordingly, these unaudited interim condensed consolidated financial statements should be read in conjunction with the consolidated financial statements and notes thereto contained in the Company’s Annual Report on Form 10-K filed with the SEC on November 28, 2025. The unaudited condensed consolidated balance sheet as of August 31, 2025 included herein was derived from the audited consolidated financial statements as of that date.

The unaudited interim condensed consolidated financial statements have been prepared on the same basis as the audited consolidated financial statements and include all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of the Company’s unaudited condensed consolidated balance sheet as of February 28, 2026, the unaudited condensed statements of operations and comprehensive loss for the three and six months ended February 28, 2026 and 2025, the unaudited condensed statement of changes in equity for the three and six months ended February 28, 2026 and 2025, and the unaudited condensed statements of cash flows for the six months ended February 28, 2026 and 2025. The results for the three or six months ended February 28, 2026 are not necessarily indicative of the results to be expected for the year ending August 31, 2026.

Going Concern —The accompanying unaudited interim condensed consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. The realization of assets and the satisfaction of liabilities in the normal course of business are dependent on, among other things, the Company’s ability to operate profitably, to generate cash flows from operations, and to pursue financing arrangements to support its working capital requirements.

The Company suffered losses from operations of $1.6 million and $2.9 million, and net cash provided by operating activities of $2.2 million and net cash used in operating activities of $361 thousand, for the years ended August 31, 2025 and 2024, respectively. These facts and conditions have raised substantial doubt about the Company’s ability to continue as a going concern, even though gross profit on product sales was $2.4 million for the year ended August 31, 2025 compared to $1.1 million for the year ended August 31, 2024. On February 28, 2026, the Company’s cash and cash equivalents had increased to $4.0 million compared to $2.4 million on February 28, 2025. Further, loss from operations was $845 thousand and $1.9 million for the three and six months ended February 28, 2026, respectively. Management believes that it has developed a liquidity plan, as summarized below, that, if executed successfully, should provide sufficient liquidity to meet the Company’s obligations as they become due for a reasonable period of time, and allow the development of its core business. The plan includes:

While the Company's management believes that the measures described in the above liquidity plan will be adequate to satisfy its liquidity requirements for the twelve months after the date that the financial statements are issued, there is no assurance that the liquidity plan will be successfully implemented. Failure to successfully implement the liquidity plan may have a material adverse effect on its business, results of operations and financial position, and may adversely affect its ability to continue as a going concern. These unaudited interim condensed consolidated financial statements do not include any adjustments related to the recoverability and classification of recorded assets or the amounts and classification of liabilities or any other adjustments that might be necessary should the Company be unable to continue as a going concern.

Restricted Cash —Restricted cash primarily consists of cash held in reserved bank accounts in Taiwan, including compensating balances required under the Company's long-term loan requirements. As of February 28, 2026 and August 31, 2025, the Company’s restricted cash at noncurrent portion, which was recorded as other assets, amounted to $173 thousand and $177 thousand, respectively.

Revenue Recognition —Effective September 1, 2018, the Company adopted ASC 606 using the modified retrospective transition method. The Company applied the following five steps to achieve the core principles of ASC 606: 1) identified the contract with a customer; 2) identified the performance obligations (promises) in the contract; 3) determined the transaction price; 4) allocated the transaction price to the performance obligations in the contract; and 5) recognized revenue when (or as) the Company satisfies a performance obligation.

The Company recognizes the amount of revenue, when the Company satisfies a performance obligation, to which it expects to be entitled for the transfer of promised goods or services to customers. The Company obtains written purchase authorizations from its customers as evidence of an arrangement and these authorizations generally provide for a specified amount of product at a fixed price. Generally, the Company considers delivery to have occurred at the time of shipment as this is generally when title and risk of loss for the products will pass to the customer. The Company provides its customers with limited rights of return for non‑conforming shipments and product warranty claims. Based on historical return percentages, which have not been material to date, and other relevant factors, the Company estimates its potential future exposure on recorded product sales, which reduces product revenues in the consolidated statements of operations and reduces accounts receivable in the consolidated balance sheets. The Company also provides standard product warranties on its products, which generally range from three months to two years. Management estimates the Company’s warranty obligations as a percentage of revenues, based on historical knowledge of warranty costs and other relevant factors. To date, the related estimated warranty provisions have been insignificant.

Gross Versus Net Revenue —ASC 606 provides guidance on proper recognition of principal versus agent considerations which are used to determine gross versus net revenue recognition. Under ASC 606, the core objective of the guidance on gross versus net revenue recognition is to help determine whether an entity is a principal or an agent in a transaction. In general, the primary difference between these two is the performance obligation being satisfied. The principal has a performance obligation to provide the desired goods or services to the end customer, whereas the agent arranges for the principal to provide the desired goods or services. Additionally, a fundamental characteristic of a principal in a transaction is control. A principal substantively controls the goods and services before they are transferred to the customer as well as controls the price of the good or service being provided. An agent normally receives a

commission or fee for these activities. In addition to control, the level at which an entity controls the price of the good or service being transferred determines principal versus agent status. The more discretion over setting price a company has in providing the good or service, the more likely they are considered a principal rather than an agent. Under the guidance when another party is involved in providing a good or service to a customer, an entity is a principal if the entity obtains control of the asset or right to a service performed by the other party.

The Company’s revenues for the six months ended February 28, 2026 were significantly derived from buy-sell purchase orders of equipment.

Under buy-sell purchase orders, the Company purchases certain machinery and equipment (the “Goods”) from vendors and sells them to customers. Control of the Goods, including title and risk of loss, transfers to customers upon delivery at their designated seaport, and the Company has discretion in establishing prices. Accordingly, revenue from these transactions is recognized at the gross sales price.

Principles of Consolidation —The unaudited interim condensed consolidated financial statements include the accounts of SemiLEDs and its consolidated subsidiaries. All intercompany transactions and balances have been eliminated during consolidation.

On September 1, 2018, the Company adopted ASC 825-10, “Financial Instruments - Overall: Recognition and Measurement of Financial Assets and Financial Liabilities”. This standard allows equity investments that do not have readily determinable fair values to be re-measured at fair value either upon the occurrence of an observable price change or upon identification of impairment. The standard also simplifies the impairment assessment of equity investments without readily determinable fair values by requiring assessment for impairment qualitatively at each reporting period.

Investments in which the Company has the ability to exercise significant influence over the investee but not a controlling financial interest, are accounted for using the equity method of accounting and are not consolidated. These investments are in joint ventures that are not subject to consolidation under the variable interest model, and for which the Company: (i) does not have a majority voting interest that would allow it to control the investee, or (ii) has a majority voting interest but for which other shareholders have significant participating rights, but for which the Company has the ability to exercise significant influence over operating and financial policies. Under the equity method, investments are stated at cost after adding or removing the Company’s portion of equity in undistributed earnings or losses, respectively. The Company’s investment in these equity‑method entities is reported in the consolidated balance sheets in investments in unconsolidated entities, and the Company’s share of the income or loss of these equity‑method entities, after the elimination of unrealized intercompany profits, is reported in the consolidated statements of operations in equity in losses from unconsolidated entities. When net losses from an equity‑method investee exceed its carrying amount, the carrying amount of the investment is reduced to zero. The Company then suspends using the equity method to provide for additional losses unless the Company has guaranteed obligations or is otherwise committed to provide further financial support to the equity‑method investee. The Company resumes accounting for the investment under the equity method if the investee subsequently returns to profitability and the Company’s share of the investee’s income exceeds its share of the cumulative losses that have not been previously recognized during the period the equity method is suspended.

Investments in entities that are not consolidated or accounted for under the equity method are recorded as investments without readily determinable fair values. Investments without readily determinable fair values are reported on the consolidated balance sheets in investments in unconsolidated entities, at cost minus impairment, if any, plus or minus changes resulting from observable price changes in orderly transactions for an identical or similar investment of the same issuer. Dividend income, if any, received is reported in the consolidated statements of operations in equity in losses from unconsolidated entities.

If the fair value of an equity investment declines below its respective carrying amount and the decline is determined to be other‑than‑temporary, the investment will be written down to its fair value.

Use of Estimates —The preparation of unaudited interim condensed consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the unaudited interim condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Significant items subject to such estimates and assumptions include the preparation of the Company’s consolidated financial statements on the basis that the Company will continue as a going concern, the collectability of accounts receivable, inventory net realizable values, realization of deferred tax assets, valuation of stock-based compensation expense, the useful lives of property, plant and equipment and intangible assets, the recoverability of the carrying amount of property, plant and equipment, intangible assets and investments in unconsolidated entities, the fair value of acquired tangible and intangible assets, income tax uncertainties, provision for potential litigation costs and other contingencies. Management bases its estimates on historical experience and also on assumptions that it believes are reasonable. Management assesses these estimates on a regular basis; however, actual results could differ materially from those estimates.

Certain Significant Risks and Uncertainties —The Company is subject to certain risks and uncertainties that could have a material and adverse effect on the Company’s future financial position or results of operations, which risks and uncertainties include, among others: it has incurred significant losses over the past several years, any inability of the Company to compete in a rapidly evolving market and to respond quickly and effectively to changing market requirements, any inability of the Company to grow its revenue and/or maintain or increase its margins, it may experience fluctuations in its revenues and operating results, any inability of the Company to protect its intellectual property rights, claims by others that the Company infringes their proprietary technology, and any inability of the Company to raise additional funds in the future.

Concentration of Supply Risk —Some of the components and technologies used in the Company’s products are purchased and licensed from a limited number of sources and some of the Company’s products are produced by a limited number of contract manufacturers. The loss of any of these suppliers and contract manufacturers may cause the Company to incur transition costs to another supplier or contract manufacturer, result in delays in the manufacturing and delivery of the Company’s products, or cause it to carry excess or obsolete inventory. The Company relies on a limited number of such suppliers and contract manufacturers for the fulfillment of its customer orders. Any failure of such suppliers and contract manufacturers to perform could have an adverse effect upon the Company’s reputation and its ability to distribute its products or satisfy customers’ orders, which could adversely affect the Company’s business, financial position, results of operations and cash flows.

Concentration of Credit Risk —Financial instruments that subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents and accounts receivable.

The Company keeps its cash and cash equivalents in demand deposits with prominent banks of high credit quality and invests only in money market funds. Cash accounts at each institution are insured by the Federal Deposit Insurance Corporation in the United States or Central Deposit Insurance Corporation in Taiwan up to certain limits. At times, such deposits may be in excess of the insurance limit. U.S. accounts are guaranteed by the Federal Deposit Insurance Corporation (FDIC) up to $250,000. As of February 28, 2026 and August 31, 2025, the Company had no cash in excess of FDIC insured limits. The Company maintains cash in state-owned banks in Taiwan, where the insurance coverage of each bank is NTD$3,000,000 (approximately $96,077). As of February 28, 2026 and August 31, 2025, the Company had $3,500 thousand and $2,281 thousand cash in excess of the insured amount, respectively. The Company has not experienced any losses in such accounts. As of February 28, 2026 and August 31, 2025, cash and cash equivalents of the Company consisted of the following (in thousands):

The Company’s revenues for the six months ended February 28, 2026 were significantly derived from buy-sell purchase orders of equipment. Net revenues generated from buy-sell purchase orders of equipment represented 36% of the Company's revenues for the six months ended February 28, 2026. A significant portion of the Company’s revenues are derived from a limited number of customers, and sales are concentrated in a few select markets. Management performs ongoing credit evaluations of its customers and generally does not require collateral on accounts receivable. Management evaluates the need to establish an allowance for doubtful accounts for

estimated potential credit losses at each reporting period. The allowance for doubtful accounts is based on the management’s assessment of the collectability of its customer accounts. Management regularly reviews the allowance by considering certain factors, such as historical experience, industry data, credit quality, ages of accounts receivable balances and current economic conditions that may affect a customer’s ability to pay.

Net revenues generated from sales to the top ten customers represented 89% and 91% of the Company’s total net revenues for the three and six months ended February 28, 2026, respectively, and 99% and 98% of the Company’s net revenues for the three and six months ended February 28, 2025, respectively.

The Company’s revenues have been concentrated in a few select markets, including India, Japan, the United States and the Netherlands. Net revenues generated from sales to customers in these markets, in the aggregate, accounted for 69% and 86% of the Company’s net revenues for the three and six months ended February 28, 2026, respectively, and 98% and 97% of the Company’s net revenues for the three and six months ended February 28, 2025, respectively.

Noncontrolling Interests —Noncontrolling interests are classified in the consolidated statements of operations as part of consolidated net income (loss) and the accumulated amount of noncontrolling interests in the consolidated balance sheets as part of equity. Changes in ownership interest in a consolidated subsidiary that do not result in a loss of control are accounted for as an equity transaction. If a change in ownership of a consolidated subsidiary results in loss of control and deconsolidation, any retained ownership interests are remeasured with the gain or loss reported in net earnings.

On September 1, 2018, Taiwan Bandaoti Zhaoming Co., Ltd., formerly known as Silicon Base Development, Inc. (“SBDI”), the Company’s wholly owned operating subsidiary, issued 414,000 common shares and amended its certificate of incorporation to increase its common stock issued from 12,087,715 shares to 12,501,715 shares. As of the issuance date, the increased capital of $176 thousand (NT$5.4 million) had been completely received in cash by SBDI. SemiLEDs Optoelectronics Co., Ltd. (“Taiwan SemiLEDs”) did not subscribe for the newly issued common shares, and, as a result, the noncontrolling interest in Taiwan SemiLEDs increased from zero to 3.31%. From January 2019 to September 2020, Taiwan SemiLEDs purchased an additional 33,000 common shares of SBDI from non-controlling shareholders. From March 2022 to May 2022, Taiwan SemiLEDs purchased an additional 52,000 common shares of SBDI from non-controlling shareholders. On September 1, 2024, Taiwan SemiLEDs purchased the remaining 329,000 common shares of SBDI from non-controlling shareholders. On April 1, 2025, Taiwan Bandaoti Zhaoming Co., Ltd. merged with and into Taiwan SemiLEDs. Taiwan Bandaoti Zhaoming Co., Ltd. now functions as a division of Taiwan SemiLEDs with all property, obligations, and capital being transferred to Taiwan SemiLEDs. Taiwan SemiLEDs changed its company name to Taiwan Bandaoti Zhaoming Co., Ltd. after the merger. The noncontrolling interest in former Taiwan Bandaoti Zhaoming Co., Ltd. was zero as of February 28, 2026 and August 31, 2025.

Recent Accounting Pronouncements

In November 2023, the FASB issued ASU No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures (“ASU 2023-07”). The amendments in ASU 2023-07 improve reportable segment disclosure requirements through enhanced disclosures about significant segment expenses that are regularly provided to the chief operating decision maker (CODM). In addition, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, provide new segment disclosure requirements for entities with a single reportable segment, and contain other disclosure requirements. ASU 2023-07 became effective for annual reporting periods beginning after December 15, 2023, and interim periods within annual reporting periods beginning after December 15, 2024. The Company adopted the ASU on a retrospective basis for all prior periods presented, and the adoption had no material effect on the unaudited condensed consolidated financial statements and related disclosures.

In November 2024, the FASB issued ASU 2024-03, Disaggregation of Income Statement Expenses. The new standard requires entities to disclose additional information about certain expenses, such as purchases of inventory, employee compensation, depreciation, intangible asset amortization, as well as selling expenses included in commonly presented expense captions on the income statement. The FASB further clarified the effective date in January 2025 with the issuance of ASU 2025-01, Income Statement – Reporting Comprehensive Income – Expense Disaggregation Disclosures (Subtopic 220-40): Clarifying the Effective Date. The ASU is effective for fiscal years beginning after December 15, 2026 and interim periods beginning after December 15, 2027. Companies have the option to apply this guidance either on a retrospective or prospective basis, and early adoption is permitted. The Company is currently evaluating the impact of ASU 2024-03 on its unaudited condensed consolidated financial statements and related disclosures.

In July 2025, the FASB issued ASU 2025-05, “Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets”. ASU 2025-05 provides a practical expedient related to the estimation of expected credit losses for current accounts receivable and current contract assets. ASU 2025-05 is effective for annual reporting periods beginning after December 15, 2025 and interim reporting periods within those annual reporting periods and should be applied prospectively. Early

adoption is permitted. The Company adopted the ASU, and the adoption had no material effect on the unaudited condensed consolidated financial statements and related disclosures.

In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40) (“ASU 2025-06”). ASU 2025-06 updates the accounting guidance for internal-use software by eliminating references to software development project stages, thereby requiring companies to start capitalizing software costs when (i) management has authorized and committed to funding the project and (ii) it is probable the project will be completed and the software will be used as intended. ASU 2025-06 is effective for annual periods beginning after December 15, 2027, with early adoption permitted. Amendments can be applied either (i) prospectively, (ii) through a modified transition approach based on the status projects and whether software costs were capitalized before the date of adoption, or (iii) retrospectively. The Company is currently evaluating the impact of ASU 2025-06 on its unaudited condensed consolidated financial statements and related disclosures.

In December 2025, the FASB issued ASU 2025-10 to provide specific authoritative guidance about the recognition, measurement, and presentation of a grant received by a business entity from a government. The amendments in this guidance require that a government grant received by a business entity should not be recognized until (1) it is probable that a business entity will comply with the conditions attached to the grant and the grant will be received and (2) a business entity meets the recognition guidance for a grant related to an asset or a grant related to income. Adoption of this standard is required using either a modified prospective, modified retrospective, or a retrospective approach. This standard is effective for the Company for both interim and annual reporting for the year ended December 31, 2029. The Company is currently evaluating the impact of ASU 2025-06 on its unaudited condensed consolidated financial statements and related disclosures.

The Company does not believe other recently issued but not yet effective accounting standards, if currently adopted, would have a material effect on the unaudited condensed consolidated financial position, statements of operations and cash flows.