Supermicro names Long CFO as shares fall more than 8% amid sector selloff
Key Facts
Supermicro announced on October 15, 2026, the appointment of Mark Long as chief financial officer, in a transition it said was aimed at strengthening operational and financial execution as it expands in artificial intelligence infrastructure. According to the company's filing with the U.S. Securities and Exchange Commission, the board approved the appointment with immediate effect on October 14, 2026. Long succeeded David Weigand, whose tenure as CFO ended when the board's decision took effect, before the change was announced the following day. The company said in its appointment statement that Long would report directly to Chief Executive Charles Liang. Liang linked the new CFO's arrival to the company's expansion needs, saying he would help "strengthen and accelerate operational and financial execution."
Long joins Supermicro with previous experience leading Western Digital's finance function, according to the biography included in the SEC filing. He served as CFO there from 2016 to 2019 before being appointed to the same role at Supermicro. On employment terms, the company's offer to Long set an annual base salary of $725,000 for assuming the finance role. The offer also includes a $500,000 signing bonus upon appointment, according to the filing detailing the financial terms of his move to the company. The signing bonus was included in the employment offer alongside the base salary as a payment tied to the appointment, while the salary was set on an annual basis.
The search for a new CFO long preceded the latest announcement, with Supermicro announcing its launch on December 2, 2024, as part of measures following a review by an independent special committee. The company said at the time that the search was part of changes recommended by the committee after completing its review, according to an investor relations statement. The recommendations included bringing in a new CFO and appointing a chief accounting officer, according to the company's disclosure on the special committee's findings. Weigand held both responsibilities, so the recommendation called for separating leadership of finance and accounting rather than continuing to combine them under him. Supermicro announced the appointment of Kenneth Cheung as chief accounting officer as part of the reorganization of its financial leadership, before the CFO role later passed to Long.
On financial performance, Supermicro's preliminary unaudited results showed fiscal fourth-quarter net sales of $11.1 billion, according to the company's earnings statement. That compared with sales of $10.2 billion in the previous quarter, in a comparison of the consecutive fiscal periods included in the company's results announcement. Preliminary unaudited gross margin reached 17.5% in the fiscal fourth quarter, compared with 9.9% in the previous quarter, alongside the increase in sales. Liang attributed the improvement in profitability to a shift toward a more profitable mix of enterprise customers, according to his comments on performance in the earnings statement. He added that broader adoption of Supermicro's integrated data center solutions architecture was also among the factors that helped improve profitability.
During the session in which the appointment was announced, SMCI shares fell more than 8% in early U.S. trading, according to Investing's coverage of the stock's moves during the session. The website attributed the decline mainly to a broader selloff in the semiconductor sector, coinciding with the company's announcement of a change in its financial leadership. In separate developments concerning export compliance, Supermicro said it had not been named as a defendant in the indictment related to export control violations. The company also announced the findings of an independent investigation into the alleged product diversion scheme, in a statement addressing the investigation and the strengthening of internal compliance procedures. According to the findings announced by Supermicro, no evidence was found that any current senior management members knew of the alleged diversion scheme.
In the next phase of the financial leadership transition, Weigand will continue helping Supermicro hand over responsibilities to Long, according to the arrangements announced in the company's appointment statement. Weigand will then focus on business improvement and acceleration after helping the company through the transition, according to the statement outlining his role after leaving the finance post. On export compliance, Supermicro said independent board members would oversee implementation of the outstanding recommendations to strengthen compliance. That oversight includes monitoring implementation of the remaining recommendations related to strengthening compliance, according to the company's statement on the independent investigation's findings. The announced next steps thus encompass the handover of financial management responsibilities and completion of export compliance recommendations under the oversight of independent board members.