Welcome to our dedicated page for Fortuna Mining SEC filings (Ticker: FSM), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Fortuna Mining Corp. filings document the U.S. disclosure record of a Canadian issuer with common shares listed on the NYSE and TSX under FSM and FVI.
Its Form 40-F annual report and Form 6-K current reports disclose audited and interim consolidated financial statements, MD&A, management certifications, operating results and Mineral Reserve and Mineral Resource estimates for mines and projects in West Africa and Latin America. The filings also cover material-event disclosures such as exploration agreements, normal course issuer bid activity, annual meeting and record-date notices, common-share information, and governance policies including the Code of Conduct and Business Ethics.
Fortuna Mining Corp. released a feasibility study for its Diamba Sud gold project in Senegal outlining a high-margin, open-pit, carbon-in-leach mine. Using a gold price of $3,500/oz, the study shows an after-tax NPV5% of $1.0 billion, an after-tax IRR of 60%, and a roughly one-year payback on initial capital.
The mine plan covers 9.4 years, processing 20.5 million tonnes of ore grading 1.75 g/t gold, for total production of about 1.05 million ounces at a life-of-mine recovery of 91%. Average all-in sustaining cost is estimated at $1,332/oz, with the first four years averaging 158,000 ounces annually at AISC of $1,056/oz.
Initial development capital is estimated at $397.5 million, plus $64 million in sustaining capital and $14.5 million in closure costs. Probable mineral reserves total 20.5 million tonnes containing 1.15 million ounces of gold, and Fortuna plans early works spending of $73 million to advance the project toward a final investment decision, subject to permits.
Fortuna Mining Corp. reported the results of its 2026 annual general meeting of shareholders. A total of 202,415,038 common shares were represented, equal to 66.81% of issued and outstanding shares as of the record date, showing solid participation in the meeting.
Shareholders approved all items of business. They fixed the Board at eight directors and elected all eight nominees, each receiving more than 92% of votes cast, with most above 99%. Shareholders also re-appointed KPMG LLP as auditors and approved the unallocated entitlements under Fortuna’s Share Unit Plan.
Fortuna Mining Corp. has obtained an environmental decree from Senegal’s Ministry of Environment and Ecological Transition approving the Environmental and Social Impact Assessment for its Diamba Sud Gold Mine. This confirms regulatory compliance and social acceptance and is a decisive step toward securing the mining permit.
The Diamba Sud Gold Project is supported by a Preliminary Economic Assessment showing an after-tax NPV5% of US$563 million and an after-tax IRR of 72% at a US$2,750-per-ounce gold price. Life-of-mine gold production is projected at 840 koz over 8.1 years, with average annual output of 146 koz in the first three years.
The study outlines initial capital expenditure of US$283 million, sustaining and infrastructure capital of US$48 million, average all-in sustaining costs over the mine life of US$1,238/oz, and an after-tax payback period of 0.8 years. Early works are advancing under a US$100 million 2026 project budget, with a final construction decision targeted for mid-2026.
Fortuna Mining Corp. has filed a Form 6-K to share a news release announcing its eighth annual 2025 Sustainability Report. The report describes 2025 progress in governance, corporate strategy, risk management, and operational performance during a year of portfolio consolidation and strengthened systems.
Management highlights a focus on health and safety, critical risk management, water and tailings governance, climate action, and long-term operational discipline across mines and projects in Latin America and West Africa. The report is prepared using frameworks such as SASB, IFRS S1, GRI, and TCFD, with ongoing work toward IFRS S2 alignment.
Fortuna Mining Corp. is convening its 2026 annual general meeting on June 25, 2026 in Vancouver and is using electronic Notice-and-Access to deliver proxy materials. Shareholders will vote on appointing KPMG as auditor, electing eight directors, and re-approving unallocated awards under the share unit plan, which can reserve up to 2.25% of issued shares.
The circular highlights a strong 2025, with sales of $947.1 million, mine operating income of $466.9 million, adjusted EBITDA of $514.0 million, and free cash flow from ongoing operations of $330.0 million. Gold equivalent production reached 317,001 ounces, including 277,709 ounces of gold.
The board also renewed a normal course issuer bid allowing repurchase of up to 15,227,869 common shares, or five percent of the 304,557,387 shares outstanding as of April 10, 2026, with any purchased shares to be cancelled. Extensive detail is provided on executive and director pay, equity incentives, governance policies, and risk and sustainability disclosures.
Fortuna Mining Corp ownership disclosure: Arrowstreet Capital, Limited Partnership and Arrowstreet Capital Holding LLC report beneficial ownership of 15,116,413 common shares, representing 5.0% of the class. The filing states these shares are held by investment advisory clients of Arrowstreet and ACH is the ultimate parent.
The Schedule 13G/A amendment lists 12,433,039 shares as sole voting power and 15,116,413 shares as sole dispositive power. Signatures are dated 05/15/2026.
Fortuna Mining Corp. reported an amended Schedule 13G showing Van Eck Associates Corporation beneficially owns 20,902,791 common shares, representing 6.84% of the class as of 03/31/2026. The filing lists Van Eck's sole voting and dispositive power over those shares and is signed by an Assistant Vice President on 05/15/2026.
Fortuna Mining Corp. delivered a sharply stronger first quarter of 2026 from continuing operations. Sales rose to $342.5 million from $195.0 million, driven mainly by higher gold prices and increased volumes at the Lindero and Séguéla mines. Net income from continuing operations increased to $119.9 million, with basic earnings per share attributable to shareholders of $0.36, up from $0.12. Adjusted EBITDA reached $218.8 million, more than double the prior year period. Free cash flow from ongoing operations was $174.0 million, supporting a cash balance of $665.9 million and debt of $136.6 million as of March 31, 2026. The company repurchased 2.2 million shares for $20.4 million and renewed its normal course issuer bid. Fortuna also entered a staged earn-in to acquire up to a 70% interest in the Quartzstone gold project in Guyana, committing to extensive drilling and a potential feasibility study.
Fortuna Mining Corp. reports a 15% year-over-year increase in consolidated Mineral Reserves after production depletion, driven mainly by strong results at Séguéla and the Diamba Sud gold project. At Séguéla in Côte d’Ivoire, Proven and Probable Mineral Reserves grew from 9.75 Mt to 16.36 Mt, up 68%, with grade easing from 3.38 g/t to 3.01 g/t gold, while Inferred resources rose 48% in tonnes and 42% in contained gold. At Diamba Sud in Senegal, Measured and Indicated resources expanded from 7.8 Mt to 26.0 Mt, a 236% volume increase, lifting contained gold by 165%, while Inferred ounces fell 48% as material was upgraded in classification. Lindero in Argentina shows an 8% decline in gold reserve ounces from mining depletion, and Caylloma in Peru records lower reserve tonnes but a 9% higher silver grade and modest resource growth. For 2026, Fortuna allocates US$12.2 million at Séguéla, US$3.7 million at Lindero/Arizaro, and US$8.8 million at Diamba Sud for Brownfields drilling, while advancing a feasibility study at Diamba Sud to support a construction decision by the end of the second quarter of 2026.
Fortuna Mining Corp. has filed a Form 6-K to announce timing for its first quarter 2026 financial disclosure. The company will release its financial statements and MD&A for the quarter on May 6, 2026, after market close.
Management will host a conference call on May 7, 2026, at 9:00 a.m. Pacific / 12:00 p.m. Eastern to discuss financial and operational results. Investors can join via webcast or by phone using the provided toll-free and international numbers. A telephone replay will be available until May 21, 2026, and the webcast replay until May 7, 2027, with a transcript archived on the company’s website.
Fortuna Mining Corp. is a Canadian precious metals producer with three operating mines and exploration activities across Latin America and West Africa, focused on gold and silver production with an emphasis on environmental stewardship and social responsibility.