Key Highlights

• The report restated a free-cash-flow breakeven of $45 to $50 per barrel, with a target of under $50 per barrel in 2026.

• Darwin LNG reliability was 98.5%, feed gas reached a record peak of about 600 million standard cubic feet a day, and the plant produced 702 kilotonnes of LNG on a gross basis.

• Sales Revenue from PNG was $845 million, compared with $687 million in the June quarter.

• Third-quarter Capital Expenditure excluding capitalised interest was $511 million, compared with $481 million in the June quarter and $631 million a year earlier.

Why would Santos Limited (ASX:STO) narrow its 2026 production guidance in the same report that showed record free Cash Flow from operations? The September 2026 quarterly report, released on 22 October 2026, shows production of 26.3 million barrels of oil equivalent (mmboe) for the quarter, the most encouraging of the year to date, driven by Barossa and Pikka. At the same time, Santos cut the upper end of its full-year production range, from 99 to 105 mmboe to 99 to 102 mmboe.

The central development: record cash, narrower guidance

All figures below are in US dollars, except where stated, and come from the Santos third-quarter 2026 report for the quarter ended 30 September 2026.

- Production: 26.3 mmboe, up about 14% on the June quarter (23.1 mmboe) and 23% on the September 2025 quarter (21.3 mmboe). Year-to-date production was 71.9 mmboe.

- Sales volume: 26.4 mmboe, with year-to-date sales of 74.4 mmboe.

- Sales revenue: about $2,006 million, compared with $1,129 million a year earlier. Year-to-date revenue was $4,626 million.

- Free cash flow from operations: about $1,069 million, a record, with year-to-date of about $1,447 million.

- Free cash flow: about $957 million for the quarter, and about $839 million year to date.

The guidance for 2026 was updated to production of 99 to 102 mmboe (previously 99 to 105) and sales Volume of 102 to 105 mmboe (previously 102 to 108). Capital expenditure of about $1.95 billion to $2.15 billion excluding capitalised interest, unit production cost of $6.95 to $7.45 per Barrel of Oil Equivalent and Depreciation and Amortisation of about $2,200 million were unchanged. The report restated a free-cash-flow breakeven of $45 to $50 per barrel, with a target of under $50 per barrel in 2026.

Year-to-date production of 71.9 mmboe means the guided range implies fourth-quarter production of roughly 27 to 30 mmboe. That is arithmetic from the company's own numbers, and it indicates that the company expects another quarter at or above the September level.

Barossa and Darwin LNG

Darwin LNG reliability was 98.5%, feed gas reached a record peak of about 600 million standard cubic feet a day, and the plant produced 702 kilotonnes of LNG on a gross basis. Ten LNG cargoes and two condensate cargoes were lifted during the quarter.

For Santos the importance is that a project with large capital outlay is now producing steadily.

Pikka and Alaska

Pikka, in Alaska, increased its production from about 23,000 barrels a day gross at the end of June 2026 to about 69,000 barrels a day at the end of September. Instantaneous rates briefly exceeded 80,000 barrels a day before a weather-related curtailment. Santos plans to hold production at around 70,000 barrels a day briefly and then ramp to about 80,000. Alaska produced 1.0 mmboe in the quarter, five cargoes were lifted, two of them with Santos equity, and 32 development wells have been drilled.

The weather curtailment shows that conditions in Alaska can affect output, which matters for the fourth-quarter volumes needed to reach guidance.

PNG and the broader portfolio

Papua New Guinea production was 10.2 mmboe in the quarter, flat on the June quarter and the September 2025 quarter, with year-to-date production of 30.2 mmboe. Sales revenue from PNG was $845 million, compared with $687 million in the June quarter. PNG LNG reliability was above 98%, with an annualised run rate of 8.7 million tonnes a year.

Capital expenditure and cash use

Third-quarter capital expenditure excluding capitalised interest was $511 million, compared with $481 million in the June quarter and $631 million a year earlier. Year-to-date capex excluding capitalised interest was $1,433 million. The report reviewed contained no figures for net debt, gearing or dividends, so Santos's balance-sheet position and Shareholder returns are not assessed here.

Business model and sector position

Santos is an oil and gas producer, with exposure to LNG, gas and liquids, so its revenue depends on volumes and on prices that follow oil and LNG markets. The report indicates a portfolio spread across Australia, Papua New Guinea and Alaska. It competes with other Australian and international producers for capital, and with LNG suppliers for customers. The $45 to $50 per barrel free-cash-flow breakeven is a company measure, not an independent one.

Risks to monitor

- Delivery of the fourth-quarter volumes needed to reach the 99 to 102 mmboe guidance.

- Pikka plateau performance, including weather and reservoir behaviour.

- Barossa and Darwin LNG reliability.

- Oil and LNG price movements.

- Capital spending staying within the guided range.

- Operating costs relative to the guided unit production cost range.

What to watch next

Investors should look for whether production lands inside 99 to 102 mmboe, the Pikka ramp to about 80,000 barrels a day, net Debt and gearing, dividends and any updated capital expenditure outlook for 2027.