Supermicro's new CFO inherits $2.2 billion of profit and $6.8 billion of cash burn

Mark Long takes over after fiscal 2026 profit of $2.2 billion and operating cash use of $6.8 billion. Inventory rose 176% to $12.9 billion, and the auditor still reports a material control weakness.

Supermicro earned 2.2 billion dollars in the year to 30 June and used 6.8 billion dollars of operating cash. On 14 October, its board appointed a new chief financial officer to close that gap.

Mark Long's job is cash and controls. Gross margin, the share of sales left after production costs, snapped back to 17.5% in the June quarter. The company's guidance for the September quarter only works at a gross margin near 9%. Operating cash flow was negative for the nine months to March and turned positive only in June, so Long has to prove that booked profit becomes cash.

The company's release says Long reports to chief executive Charles Liang. He succeeds David Weigand. Weigand "will assist in the transition and shift his focus to helping optimize and accelerate the business". The filing gives no reason for the change.

The quarterly record shows how wide the gap became. Net income was 569 million dollars for the September and December quarters combined, 483 million in March and 1.18 billion in June, according to the third quarter results. Operating cash flow was negative until the June quarter and fell to minus 6.6 billion in March alone.

Over the full year, operating cash flow of minus 6.8 billion dollars sat against net income of 2.2 billion. The gap between profit and cash was 9.0 billion dollars.

The cash went into stock and customers who have yet to pay. The 10-K, the annual report, shows inventory of 12.9 billion dollars against 4.7 billion a year earlier. That is a rise of 176% on sales that grew 78%.

Receivables, the money customers owe, went from 2.2 billion to 6.1 billion. Three customers made up 23.0%, 17.1% and 12.5% of that balance. Inventory now equals 135 days of cost of sales against 87 a year ago, and customers take 57 days of sales to pay against 37.

Funding that build took 9.5 billion dollars of financing, the 10-K says. Of that, 5.6 billion was new preferred and common equity raised in the June quarter, and 3.9 billion was net bank borrowing.

The balance sheet shows the effect. At the end of March the third quarter release put cash at 1.3 billion against 8.8 billion of bank debt and convertible notes. By June cash stood at 7.5 billion and debt at 8.7 billion.

June was the first positive cash quarter of the year, with 747 million dollars of operating cash on 1.18 billion of profit. That is 63 cents of cash for each dollar of profit, with the inventory still intact.

Margin is the part of the story that has already moved. Gross margin was 6.3% in the December quarter and 17.5% in June, which the company links to a richer enterprise customer mix. The full year came in at 10.8% against 11.1% the year before. The 10-K blames competitive pricing to win share, product and customer mix, and higher manufacturing costs.

The next quarter looks weaker. The fourth quarter release guides September-quarter sales of 14.5 to 15.5 billion dollars. It guides earnings of 0.89 to 0.98 dollars a share on 745 million diluted shares.

At the midpoint that is about 697 million dollars of net income, a 4.6% net margin against 10.6% in June. Tax runs near 20.1% and operating costs are rising from June's run rate. The guide therefore implies a gross margin of 8% to 10%, roughly half the figure just reported.

The bull case is that Supermicro guides low and a richer enterprise mix makes 17.5% the new base. June gives it some support. The company guided earnings of 0.53 to 0.67 dollars a share and delivered 1.62.

Sales of 11.1 billion dollars landed at the bottom of the 11.0 to 12.5 billion guided range. In March the company delivered 10.2 billion of sales after a May range that put the full year at 38.9 to 40.4 billion. Margin cannot settle the question. Cash can, because a 17.5% margin produced only 747 million dollars of operating cash flow while inventory days stayed high.

Controls are the second item on Long's desk. BDO USA, the auditor, expressed an adverse opinion on internal control over financial reporting at 30 June 2026. The 10-K says the company has not fully remediated a material weakness, and its plan covers IT general controls.

In March federal prosecutors in New York unsealed an indictment of three people tied to the company, including former director Wally Liaw, over alleged export control violations. The company later completed an independent investigation into the customer transactions involved.

The 10-K also carries a risk factor on the company having previously been delinquent in its SEC reporting obligations.

The 8-K describes a conventional finance career. Long is 59 and has been a principal of Prime Impact Capital since 2019. He was co-chief executive and chief financial officer of Prime Impact Acquisition I, a blank-cheque company, from 2020 to 2023. He was CFO of Western Digital from 2016 to 2019 after serving as its chief strategy officer.

That résumé fits a cash task better than a controls task. At Western Digital he ran a large, inventory-heavy supply chain, but nothing in it shows he has fixed an adverse audit opinion.

Treasury now has to choose how to fund fiscal 2027 sales that Supermicro has guided at 65.0 to 72.0 billion dollars. It can add revolver and convertible capacity and keep building stock. That buys faster backlog conversion at the price of another year of negative cash flow, with 7.5 billion of cash against 8.7 billion of debt.

It can also slow component purchases and tighten customer payment terms. That protects cash but may cost deliveries, so large customers should expect requests for prepayment or milestone billing.

When Supermicro reports the September quarter in November, its first under Long, operating cash flow is what matters. We put better-than-even odds on it coming in negative again, because 12.9 billion dollars of stock does not clear in one quarter. If inventory is still above 130 days of cost of sales, the quarter will have added to the 6.8 billion dollars burned last year, whatever the margin shows.