The August 2024 short-seller report and the answers to it

analysisOn August 27, 2024 the short seller Hindenburg Research published a report on Supermicro alleging accounting manipulation, self-dealing with the CEO's siblings and sanctions evasion. It said a three-month investigation, including interviews with former senior employees and industry experts and a review of litigation, corporate and customs records, had found accounting red flags, undisclosed related-party transactions, sanctions and export-control failures and customer problems, and it disclosed that the firm held a short position in Supermicro shares, so that it gains if the share price falls. The report rests largely on unnamed former employees and trade data that are not part of the records reviewed here, and its assertions appear on this page only as allegations. Supermicro stated in its fiscal 2024 annual report that the report contained false or inaccurate statements about the company, including misleading presentations of information it had previously shared publicly. ^{1 2 3 4}

analysisSupermicro's later filings report government document requests that overlap with the report's subject matter. It discloses that on November 19, 2024 it received a subpoena from the SEC's Enforcement staff, in an investigation entitled In the Matter of Super Micro Computer, Inc., seeking categories of documents many of which overlap with requests in October 22, 2024 subpoenas from the U.S. Attorney's Office for the Southern District of New York and with the allegations in the report; it received another SEC subpoena on April 28, 2026 and says it is cooperating and continues to produce documents. A subpoena is a request for documents in an investigation, not a charge or finding, and the schedules to Supermicro's December 29, 2025 credit agreement state that no charges had been reported by then. A Special Committee of the board that reviewed the export and related-party allegations reported in December 2024 that it saw no evidence of attempts to circumvent export controls and that the related parties named in the report had been disclosed as required, were not required to be disclosed or, in one case, had become a related party during fiscal 2024. ^{3 5 1 2 4}

analysisThe report alleged that less than three months after paying its $17.5 million SEC settlement in 2020, Supermicro began rehiring senior employees who had been directly involved in its earlier accounting problems, and that three senior employees who left in early 2018 had come back as a board member, a consultant working close to the CEO and a vice president of business development. The allegation rests on litigation records and interviews with unnamed former employees, and the report's description of those individuals' involvement in the earlier accounting problems is not adopted here. Supermicro's Special Committee reported in December 2024 that it had examined the rehiring of nine individuals, as employees or independent contractors, who had resigned after the 2017 Audit Committee investigation; it noted that the 2017 investigation had made no finding that they engaged in conduct intended to misstate the company's results, concluded that the decisions to rehire them were the product of reasonable business judgment, and found lapses in keeping guardrails in place and in informing the Audit Committee and the auditor. ^{1 2}

analysisThe report also alleged, citing former employees and customers and a lawsuit filed in April 2024, that after the SEC settlement quota pressure led Supermicro salespeople to push products to distributors through partial shipments or by shipping defective products around quarter-end; it does not identify specific transactions or amounts. The Special Committee reported in December 2024 that, having reviewed 52 sales transactions from April 1, 2023 to June 30, 2024, including two specifically designated by the former auditor Ernst & Young, it did not disagree with any of the company's revenue-recognition conclusions for any quarter in that period. ¹

analysisThe report described Supermicro's dealings with Ablecom and Compuware, which it called controlled by CEO Charles Liang's brothers, as oddly circular: Supermicro provides components that the two companies assemble and sell back to it, they rent warehousing and factory space to it, together they had been paid $983 million over three years, and trade records showed about 99.8% of Ablecom's and 99.7% of Compuware's exports to the United States since 2020 going to Supermicro. The payment total and export shares come from the report's own reading of trade records that are not part of the records reviewed; Supermicro's filings themselves disclose both companies as related parties, the component, warehousing and lease arrangements, the purchase amounts and that sales to Supermicro make up a substantial majority of each company's net sales. The Special Committee concluded in December 2024 that the related parties identified in the report had been fully disclosed as required, were not required to be disclosed or, in one case, had become a related party during fiscal 2024 and would be disclosed in the next annual report. ^{1 2 3}

analysisThe report further alleged undisclosed related parties: two Taiwan server-component companies owned by the CEO's youngest brother, which it said operated from the Super Micro science and technology park; Hong Kong and Taiwan entities of another brother that appeared to resell Supermicro products; and Leadtek, in which two related parties run by the CEO's brothers had reportedly invested in October 2023. The allegation relies on media reports and unnamed former employees and does not document the transactions it says went undisclosed; the Special Committee concluded that the related parties named in the report had been disclosed as required, were not required to be disclosed or, in one case, had become a related party during fiscal 2024. Supermicro's fiscal 2024 annual report, filed in February 2025, disclosed that Ablecom and Compuware had acquired about 30% of Leadtek in October 2023, together with Supermicro's transactions with Leadtek, and disclosed indirect sales of about $0.1 million to Aeon Lighting Technology Inc., a company owned more than 10% by the CEO's brother James Liang; its fiscal 2025 annual report states that it had no transactions with Aeon Lighting that year. ^{1 2 3 4}

analysisThe report alleged an odd relationship with a key customer: that in February 2024 Supermicro made an undisclosed investment in Lambda Labs as part of a $320 million funding round, and that it signed an unusual $600 million contract to lease space at a California data center and sublease it to Lambda. The allegation cites press reports and a Lambda executive, sources that are not part of the records reviewed, and Supermicro's filings date the Vernon, California data-center agreement and its sublicense to June 14, 2024. Supermicro disclosed the Vernon agreement and the sublicense of the entire space in its fiscal 2024 annual report, stating that the sublicensee does not meet the criteria of a related party and that the equity investment and sublicensing agreements, recorded at fair value, are separate from its revenue contracts. ^{1 2}

analysisThe report alleged, from its review of more than 45,000 import and export transactions, that exports of Supermicro components to Russia had roughly tripled since the February 2022 invasion of Ukraine in apparent violation of U.S. export bans, that the goods moved first through a California distributor and later through newly formed Turkish and Hong Kong companies, and that at least 46 companies that handled Supermicro products bound for Russia were under sanctions of the U.S. Treasury's Office of Foreign Assets Control (OFAC) or on U.S. government watch lists. The allegation rests on third-party customs data that are not part of the records reviewed and describes Supermicro products reaching Russia through other companies, not sales recorded by Supermicro to Russian customers. Supermicro states that it no longer sells products or provides services to Russia and last recorded revenue from Russia in February 2022, and its Special Committee reported in December 2024 that it did not identify products sold to Russian customers or shipped to Russia in violation of export controls or sanctions in place when the products were shipped. ^{1 2}

analysisThe report alleged that the partner in Supermicro's China joint venture, formed in 2016, is the Chinese state-run company Fiberhome, which the U.S. government placed on a watch list in 2020, and that Supermicro had sold about $196 million of computer components to the venture since that listing, justifying the sales on the ground that the venture itself was not listed. Supermicro's filings do not name the venture or its parent; they state that the third-party parent company controlling the venture was placed on a U.S. export control list in June 2020 together with several related entities, so the partner's identity and the sales total are the report's own. Supermicro wrote off the remaining carrying value of the investment as of June 30, 2025 and completed the sale of its entire 30% interest on December 23, 2025. ^{1 3}