Delek turned a $106.4 million loss into $169.5 million of profit in three months. Revenue rose 47.8% to $4.1 billion, and operating margin swung from negative 1.2% to positive 7.4%.
That is the easy version of the June 30 filing: a refinery operator that went from red ink to a positive operating profit. The harder version is on the balance sheet. Cash rose only 2.1%, to $628.6 million, while inventory increased 16.1% and accounts receivable climbed 16.5%.
The earnings recovery is clear. Cash movement differed. Delek also spent more on capital projects, with capex up 19.9%, even as free-cash-flow margin improved by 11.2 percentage points to 5.4%. The result is a business that generated positive cash flow in the latest three months, but did not add cash at the same pace as profit appeared.
Delek gives one useful piece of operating context for that mismatch. Some expenses move with activity, but not all of them can be adjusted immediately.
"While many of the expenses related to the operating activities are variable in nature, some of the expenditures can be somewhat fixed in the short-term due to forward planning on our level of activity."
Delek US, 10-Q, Aug. 5, 2026.
In plain English, a stronger operating period can lift earnings against a cost base that was planned earlier, while the balance sheet still absorbs the requirements of running the business. The filing does not identify one specific operating cause for the swing from a $33.5 million operating loss to $302.4 million of operating income.
It also repeats the legal exposure that comes with the business, without attaching a new dollar figure to it.
"LEGAL PROCEEDINGS In the ordinary conduct of our business, we are from time to time subject to lawsuits, investigations and claims, including environmental claims and employee-related matters."
Delek US, 10-Q, Aug. 5, 2026.
That is not an explanation for the quarter's profit. It is a reminder that the reported margin improvement sits inside a refining and marketing business with recurring legal and environmental exposure, rather than in a purely financial asset with a simple earnings line.
The annual record supplies some perspective. Delek's revenue fell from $19.8 billion in 2022 to $10.7 billion in 2025, while its 2025 net margin was negative 0.2%. The latest three months therefore mark a sharp change from the most recent full-year result, but the comparison does not erase the business's history of large revenue swings.
The stock closed at $66.14 on Aug. 4, up 0.3% that day. It had gained 218.4% over the prior 12 months, a market fact that sits alongside the filing rather than explaining it.
The unresolved question is what happened inside the 16%-plus increases in inventory and receivables, and whether those balances continue to grow relative to sales in Delek's next quarterly report. Did the working-capital build keep pace with the earnings recovery, or not?