Fortuna Mining Corp. (FSM) Q3 2026 earnings review
Fortuna advances its Senegal mine, but unit costs keep rising
Fortuna Mining Corp., a precious metals producer in West Africa and Latin America, generated higher free cash flow even as mining costs climbed and a protest briefly halted its biggest mine. Sales rose 17% from a year ago on higher gold prices, while profit excluding one-offs stayed level at $51 million because of higher operating expenses and taxes. Chief executive Jorge Ganoza kept the full-year production outlook unchanged, but admitted that all-in sustaining costs are tracking above the annual plan after reaching $2,286 per ounce.
| Sales | $293.4M +17% from a year ago, -8% from Q2 |
|---|---|
| Profit per share, excluding one-offs | $0.17 $0.17 a year ago, $0.25 in Q2 |
| All-in sustaining cost per ounce | $2,286 up 15% from a year ago, above $1,830–1,975 plan |
| Annual production outlook | Unchanged 281,000–305,000 oz; costs tracking above plan |
⚖️ Verdict: ⚪ Neutral
The standing case is unchanged because major permitting progress on its 2028 expansion balanced out another quarter of cost overruns and a smaller cash cushion. On the positive side, Senegal advanced the Diamba Sud permit and the board authorized $250 million in project contracts, while the Lindero mine in Argentina bounced back strongly. On the negative side, unit costs rose instead of falling as management had promised, a blockade at Séguéla cut gold output, and paying $200 million for adjacent Senegalese land reduced net cash to $260 million.
The question now is whether Fortuna can secure the final Senegal mining convention and fund two West African builds at once without straining its smaller cash buffer if unit costs stay above $2,200 per ounce. Either Senegal grants the final permit on favorable tax terms while fourth-quarter rebounds at Séguéla restore margins, or permitting drags into 2027 while high operating costs eat into the cash needed for construction. The fourth-quarter permit decision and the 2027 capital budget will settle it.
🐂 Bull Case
Senegal Expansion Secures Key Permit Step and Land
Fortuna's growth plan aims to lift annual gold production by 60% starting in mid-2028. That plan depends on building a new mine at Diamba Sud in Senegal and expanding its Séguéla processing plant in Côte d'Ivoire.
Both projects moved forward this quarter. Senegal's mining ministry issued a Notice of Admissibility for the Diamba Sud exploitation permit, and the board authorized management to sign $250 million in construction contracts before the final permit arrives. The Canadian miner also paid $200 million in cash to buy the neighboring Bambadji exploration property from Barrick and IAMGOLD, and approved a $109 million budget to expand the Séguéla mill by 30%.
Buying Bambadji gives the company 60 kilometers of prospective land right next to its future Senegalese mill, while the $250 million contract authorization prevents equipment delays while government officials finish the paperwork.
What to watch: the final Diamba Sud exploitation permit and signed mining convention, expected in the fourth quarter of 2026. Receiving both documents on time would let full construction begin and keep the mid-2028 production target intact.
Lindero Heap Leach Rebound Offsets West Africa Disruption
Lindero is Fortuna's open-pit gold mine in Argentina, where crushed rock sits on a heap-leach pad and chemical solutions extract the gold over several months. Management said last quarter that higher gold placement in the spring would lift output and lower unit costs in the second half.
That recovery arrived on schedule. Lindero poured 26,024 ounces of gold in the third quarter, up 24.9% from the second quarter by our math and up 6.6% from a year ago. Because the mine spread its fixed expenses over more ounces and finished its crusher repairs, its all-in sustaining cost — a measure of total on-site mining and capital costs — dropped from $2,265 per ounce in the second quarter to $1,845.
What to watch: Lindero's fourth-quarter gold production against its 92,000 to 102,000 ounce annual target. By our math, the mine needs 23,602 ounces in the final quarter to reach the bottom of its plan.
Positives this quarter didn't test
Two standing drivers from earlier in the year received no new figures in the third-quarter news release.
- Share buybacks: Fortuna bought back $82.1 million of its own stock in the second quarter, and the third-quarter cash flow statement in the full filing will show how much cash went to repurchases alongside the $200 million Bambadji purchase.
- Guyana exploration: management planned to start initial drilling at the Quartzstone project in the fourth quarter, and the upcoming earnings call or fourth-quarter report will provide the first drilling update.
🐻 Bear Case
Production Costs Climb Further Above the Annual Plan
Management has said for two quarters that all-in sustaining cost (AISC) per gold equivalent ounce (GEO) — total operating, administrative, and sustaining capital expenses per ounce — would trend down in the second half. Chief executive Jorge Ganoza noted this quarter that AISC "is tracking above guidance, it is primarily due to the impact of external factors".
Instead of falling, consolidated AISC rose another $129 from the second quarter to $2,286 per ounce, up 15.0% from a year ago. Cost of sales, which is the direct expense of mining and processing ore, rose by 6.4 percentage points of revenue from a year ago, while general and administrative overhead in the cost table jumped 3.7 percentage points from last quarter on $10.9 million of stock-based pay.
- Third-quarter AISC: $2,286 per ounce, compared to the full-year target of $1,830 to $1,975
- Nine-month AISC: $2,184 per ounce, $209 above the top of the annual target
- Named external and stoppage impacts: $265 per ounce in total ($116 stock pay, $45 Argentine currency, $42 consumables, $45 Séguéla stoppage)
Even if we strip out all $265 per ounce of named external and stoppage items, third-quarter AISC sits at $2,021 per ounce by our math, which still exceeds the $1,975 top of the annual plan. What to watch: whether management formally raises its full-year cost outlook on the call, as hitting the current range would require fourth-quarter costs to drop below $1,360 per ounce.
Artisanal Miner Blockade and Contractor Issues Hit Séguéla
Séguéla in Côte d'Ivoire is Fortuna's largest and lowest-cost gold mine, and its steady cash flow funds the company's expansion projects. The mine also carries a standing safety concern after contractor fatalities in early 2025 and the second quarter of 2026, with the company-wide injury rate holding at 1.20 per million hours worked in the third quarter.
Operations at Séguéla stumbled in July due to poor equipment availability at a mining contractor and "a blockade caused by artisanal miners operating in the surrounding area". Government law enforcement stepped in to clear the blockade, and mining volumes returned to normal in September. Because the disruption delayed access to richer ore, gold output fell 13.0% from a year ago to 33,744 ounces, and the mine's cash cost jumped 37.6% to $947 per ounce.
The company now expects Séguéla to finish at the lower end of its 160,000 to 170,000 ounce annual plan. What to watch: fourth-quarter tonnes milled and ore grade at Séguéla, where the mine needs 42,557 ounces by our math to reach the 160,000 ounce floor.
Bambadji Purchase Halves Net Cash Before Two Builds
A pillar of the bull case has been Fortuna's large cash pile, which stood at $620.3 million at the end of June and gave the miner plenty of room to build new mines without borrowing.
Paying $200 million in cash for the Bambadji exploration property reduced cash and short-term investments to $443.3 million and brought net cash down to $259.9 million. At the same time, the board approved $109 million for the Séguéla plant expansion and authorized $250 million in contract commitments for Diamba Sud.
The balance sheet remains net cash positive, but spending $200 million on early-stage land removes a large portion of the buffer right before construction spending ramps up across two West African sites. What to watch: the total 2027 capital budget when management releases it early next year, which will show whether ongoing mine cash flow can cover both builds without drawing on the $150 million credit line.
Local Inflation in Argentina and Lower Gold Squeeze Margins
Fortuna's revenue moves directly with metal prices, while its profit margins depend on local currency and fuel costs in Argentina and West Africa.
In the third quarter, the miner's realized gold price fell for a second straight quarter, dropping from $4,447 per ounce in the second quarter to $4,281, which pulled total sales down 7.9% to $293.4 million. Meanwhile, a stronger Argentine peso and local inflation lifted Lindero's cash cost by 29.7% from a year ago to $1,449 per ounce, adding $45 per ounce to company-wide AISC, alongside a $2.5 million foreign exchange loss.
What to watch: Lindero's cash cost per ounce and fourth-quarter foreign exchange losses when the company repatriates cash from Argentina, as persistent peso appreciation erodes the benefit of four-thousand-dollar gold.
👓 Other Themes
Last Year's Accounting Gains Mask Steady Underlying Profit
Reported attributable net income fell 61.3% from a year ago to $47.8 million, or $0.16 per share, because the third quarter of 2025 included a $52.7 million accounting reversal of a prior write-down at Lindero and a $16.7 million inventory gain. Excluding those one-offs and a $3.9 million mineral property write-off this quarter, profit was $51.2 million ($0.17 per share), matching the $51.0 million earned a year ago.
💲 Other KPIs
Free cash flow from ongoing operations — operating cash flow minus capital spent to maintain existing mines — rose 23.7% from a year ago and 6.0% from last quarter. Operating cash flow fell by $25.9 million from the second quarter on lower sales and working capital timing, but a $16.5 million drop in sustaining capital spending lifted free cash flow.
Income tax expense fell from $71.0 million in the second quarter as pre-tax profit declined, but the effective tax rate stayed high at 46.8% by our math, compared to 46.0% last quarter and 16.0% a year ago. Deferred taxes at Lindero and withholding taxes on cash brought home from subsidiaries kept the tax rate elevated, while cash taxes paid totaled $51.1 million.
Silver output at the Caylloma mine in Peru rose 5.9% from a year ago and 6.9% from the second quarter on higher ore grades of 66 grams per tonne. The mine's reported all-in sustaining cost jumped 71.6% from a year ago to $43.19 per silver equivalent ounce, primarily because a 59.4% rise in realized silver prices changed the conversion ratio for lead and zinc by-products.
🔮 Guidance
Unchanged. Chief executive Jorge Ganoza said the miner "remains on track to achieve our annual production guidance", with Caylloma set to beat its plan, Lindero on track, and Séguéla at the low end. With 214,754 ounces produced in the first nine months, by our math Fortuna needs 66,246 ounces in the fourth quarter to reach the bottom of the range and 78,246 ounces (up 20.1% from a year ago) to hit the middle.
Unchanged, but Ganoza stated that AISC is tracking above the annual plan due to $220 per ounce of external factors and $45 per ounce from the July stoppage at Séguéla. After averaging $2,184 per ounce across the first nine months, by our math fourth-quarter AISC would have to plunge to $1,182 per ounce to hit the middle of the range or $1,363 to hit the top, making a full-year miss almost certain.
❓ Key Questions
What is the total construction budget for Diamba Sud?
The board authorized management to sign $250 million in contracts over the life of the Diamba Sud project, and an earlier study estimated $283.2 million. Investors need the final capital budget from the recent feasibility study and how much falls in 2027.
What terms remain open in the Senegal Mining Convention?
Fortuna is negotiating a new Mining Convention with Senegal under the 2016 Mining Code and expects to sign it in the fourth quarter. Any change to royalty rates, tax holidays, or state ownership would alter the project's returns.
Did Fortuna buy back shares in the third quarter?
After spending a record $82.1 million on share buybacks in the second quarter, the third-quarter news release did not mention repurchase activity. Investors need to know if the $200 million Bambadji purchase paused the buyback program.
How will Fortuna prevent repeat blockades around Séguéla?
Artisanal miners operating near Séguéla blocked the site in July, forcing government law enforcement to intervene and pushing the mine to the bottom of its annual production plan. Management has not detailed what community or security measures will prevent another stoppage.