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.
Commodity prices swing, governments rewrite royalties, and Fortuna Silver Mines files a maze of cross-border documents to keep investors informed. If you have ever hunted through a 300-page 40-F to find all-in sustaining cost guidance—or scrolled Form 4 PDFs for insider buys before a production update—you know the challenge.
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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.