Pantoro Gold Shares Dive As Production Guidance Lowered

Pantoro Gold shares (ASX: PNR) suffered their worst single-day decline in years today, tumbling 22.49% to A$3.79 after the mid-tier gold producer slashed its full-year production guidance by up to 18%, overshadowing otherwise stellar half-year financial results and raising fresh questions about execution risk at its flagship Norseman operations in Western Australia.

The Pantoro share price closed at its lowest level since mid-2025, wiping out months of gains built on expectations of a strong production ramp-up in the second half of fiscal 2026, and leading PNR to be the worst performer on the ASX 200 today.

Markets reacted sharply to the news that Pantoro now expects to produce between 86,000 and 92,000 ounces for the full year, down from previous guidance of 100,000 to 110,000 ounces, a reduction that management attributed primarily to significant rain events associated with ex-Tropical Cyclone Mitchell in February, which flooded multiple underground areas and disrupted open-pit mining and haulage operations for several days.

Guidance Outweighs Strong Results

Operationally, the underlying financial performance for the December 2025 half-year was exceptionally strong. Pantoro reported revenue of A$238.6 million, up 55.5% from A$153.4 million in the prior corresponding period, driven by gold production of 41,623 ounces and elevated realised gold prices. EBITDA more than doubled to A$135.5 million from A$63.8 million, slightly beating consensus expectations of around A$130 million, while net operating cash flow surged 128.7% to A$128.3 million. The company ended the half with cash and gold holdings of A$216.5 million, up from A$119.3 million, and remains entirely debt-free and unhedged; a positioning that provides full exposure to any further upside in gold prices, which have been trading in the US$5,000–5,200 per ounce range in recent weeks.

Gross profit jumped approximately 467% to A$85.1 million, and earnings per share rose to 14.1 cents from 1.7 cents in the prior half. The company also invested heavily in growth, spending A$63.4 million on exploration and development and completing 91,962 metres of drilling across its Norseman tenements during the half, targeting expansion of its underground mine inventory for fiscal 2027 and 2028.

Management outlined the specific drivers behind the guidance revision in its 9 March ASX release. Ex-Tropical Cyclone Mitchell delivered more than 80 millimetres of rain at the Scotia operation in February, causing temporary flooding of multiple underground working areas and forcing the suspension of open-pit mining and ore haulage for several days. While dewatering efforts have since restored access, the disruption pushed a portion of February’s planned production into March. Additional headwinds included equipment and personnel constraints during the January school holiday period, as well as anticipated short-term disruptions in the final quarter of fiscal 2026 stemming from the transition of the OK Underground Mine to new contractor Redpath.

The company also announced plans to commence development of a third producing underground mine at Norseman early in fiscal 2027, targeting the O’Briens Reef deposit with first ore expected in the December 2026 quarter, followed by Crown South around March 2027.

The guidance downgrade marks the second revision in recent months. In late February, Pantoro trimmed the upper end of its fiscal 2026 revenue and EBIT guidance ranges and authorised an on-market share buyback for up to 38.3 million shares, approximately 9.73% of shares on issue, signalling management’s view that the stock was undervalued. That announcement initially lifted shares around 8% intraday but was followed by an 8.8% decline on the day and a broader 24.8% fall over the subsequent 30 days, according to Simply Wall St data, foreshadowing the more severe reaction to Monday’s production cut.

Looking back, operational pressures had been building. In October 2025, Pantoro’s first-quarter fiscal 2026 update showed all-in sustaining costs jumping to approximately A$3,139 per ounce from A$2,346 per ounce in the prior quarter, even as management reaffirmed the 100,000–110,000 ounce guidance and stated that approximately 55% of production would be weighted to the second half. The reliance on back-half-weighted output always meant that any second-half disruption; whether from weather, equipment failures, or contractor transitions, would have an outsized impact on full-year outcomes, leaving little margin for error.

Markets now face a credibility gap. The combination of rising costs, intermittent quarterly production misses, and two guidance revisions in as many months has damaged confidence in management’s ability to deliver on its longer-term aspiration of reaching 200,000 ounces per annum through the expansion of multiple underground mines including Scotia, Bullen, and OK, plus the new O’Briens and Crown South sources. Institutional investors are likely to adopt a “show-me” stance, demanding several consecutive quarters of stable production and cost performance before re-rating the shares.