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.
The Fortuna Mining Corp. (FSM) SEC filings page on Stock Titan provides access to the company’s U.S. regulatory disclosures as a foreign private issuer. Fortuna files under the Securities Exchange Act of 1934, primarily using Form 40-F for annual reporting and Form 6-K to furnish current information, including financial results, technical reports, and material news releases.
Recent Form 6-K submissions include interim financial statements and Management’s Discussion and Analysis for the period ended September 30, 2025, along with CEO and CFO certifications. Other 6-K filings furnish NI 43-101 technical reports, such as the Diamba Sud Gold Project report from Senegal, consents from Qualified Persons, and news releases covering production guidance, Mineral Reserve and Mineral Resource updates, exploration results, and corporate actions.
For investors analyzing FSM, these filings are a primary source for details on mine performance, project development, and non-IFRS financial measures such as cash cost per gold equivalent ounce and all-in sustaining cost. They also document Fortuna’s liquidity, net cash position, and capital spending on growth projects like Diamba Sud and the Séguéla plant expansion studies.
On Stock Titan, you can review Fortuna’s SEC filings alongside AI-powered summaries that highlight key points from lengthy documents. This includes distilled explanations of quarterly results, project economics from technical reports, and the implications of major news releases furnished on Form 6-K. Real-time updates from EDGAR ensure that new FSM filings appear promptly, while structured access to exhibits helps you locate items such as technical reports, consents, and certifications without reading entire submissions.
Use this page to track Fortuna Mining Corp.’s ongoing disclosure record, compare successive filings, and understand how operational, exploration, and financial developments are reflected in its official SEC documents.
Fortuna Mining Corp. has submitted an application for an exploitation permit for its Diamba Sud Gold Project in Senegal to the Ministry of Energy, Petroleum, and Mines on February 4, 2026. This is a key regulatory step toward possible mine development.
The company is advancing early works at Diamba Sud, including site preparation and detailed engineering programs aimed at supporting a feasibility study and de-risking critical path activities. An updated Mineral Resource estimate is planned by the end of February 2026, forming the basis for Mineral Reserve estimation.
This work is intended to support evaluation of a potential construction decision for Diamba Sud, which the company is targeting for mid-2026. Earlier, a Preliminary Economic Assessment completed in October 2025 indicated robust project economics for the deposit.
Fortuna Mining Corp. reports a major update to its Séguéla Mine in Côte d'Ivoire, with Proven and Probable Mineral Reserves of 1.54 million ounces of gold in 16.0 million tonnes as of December 31, 2025. This reflects a 31% increase in contained gold ounces since October 31, 2025, driven in part by adding 401,000 ounces of underground reserves at the Sunbird deposit and higher average grades of 3.01 g/t Au.
The company states that Séguéla’s mine life now exceeds nine years at current production rates, with exploration drilling from late 2025 still to be incorporated into models. Measured and Indicated Mineral Resources, excluding reserves, decreased by 333,000 ounces as material was converted into underground reserves, while Inferred Resources remained relatively unchanged.
Fortuna has also started a processing plant expansion study to evaluate increasing capacity from 1.75 Mtpa to between 2.0 and 2.5 Mtpa, which it says has the potential to support annual gold production of more than 200,000 ounces at Séguéla.
Fortuna Mining Corp. submitted a Form 6-K as a foreign private issuer for November 2025. The report is primarily administrative and lists several exhibits rather than providing financial results. The key exhibit is an NI 43-101 Technical Report for the Diamba Sud Gold Project, which is a formal technical disclosure commonly required for mineral projects. The filing also includes multiple expert consent letters related to that technical report and a news release dated November 26, 2025. The document is signed on behalf of the company by President and CEO Jorge Ganoza Durant.
Fortuna Mining Corp. (FSM) received a Schedule 13G from Arrowstreet Capital, Limited Partnership and Arrowstreet Capital Holding LLC reporting beneficial ownership of 19,677,691 Common Shares, representing 6.4% of the class as of 09/30/2025.
Arrowstreet reports sole voting power over 16,112,823 shares and sole dispositive power over 19,677,691 shares, with no shared voting or dispositive power. The securities are held by investment advisory clients of Arrowstreet Capital, and no single client is known to hold more than five percent of the class. The filers certify the shares were acquired and are held in the ordinary course and not for the purpose of changing or influencing control.
Van Eck Associates Corporation filed a Schedule 13G/A on Fortuna Mining Corp. (FSM), reporting beneficial ownership of 29,766,964 common shares, representing 9.7% of the class as of 09/30/2025. Van Eck reports sole voting power over 29,629,588 shares and sole dispositive power over 29,766,964 shares.
The filing notes that the VanEck Gold Miners ETF has the right to receive dividends and sale proceeds for 16,511,277 of the reported shares. Van Eck certifies the shares were acquired and are held in the ordinary course of business and not to influence control.