Welcome to our dedicated page for Ero Copper SEC filings (Ticker: ERO), 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.
Ero Copper Corp files with the SEC as a foreign private issuer, meaning its regulatory documents differ from domestic U.S. companies. Instead of 10-K and 10-Q reports, Ero Copper submits Form 6-K filings that disclose material events, production updates, and financial results. Understanding this filing structure helps you find the information that matters for this Brazilian copper producer.
Mining company filings reveal operational metrics not visible elsewhere. Ero Copper's 6-K submissions include quarterly production figures for copper and gold, exploration drilling results with assay grades, and mineral reserve updates that define the company's asset value. Our AI summaries extract these technical details so you don't need to parse mining terminology yourself.
Key disclosures to monitor in ERO filings include:
- Copper and gold production volumes by operation (Carajas, Tucuma, Xavantina)
- All-in sustaining costs per pound of copper that indicate operational efficiency
- Drill intercept results with copper equivalent grades from exploration targets
- Mineral reserve and resource estimates that determine mine life
- Capital expenditure guidance for development projects
Form 4 equivalent disclosures show when Ero Copper executives and directors buy or sell shares. For foreign issuers, these transactions appear in 6-K filings or through Canadian SEDI reports. Tracking insider activity provides signals about management confidence in the company's direction.
Annual reports filed on Form 40-F contain audited financials, technical reports on mining assets, and management discussion covering operational performance. These comprehensive documents serve the same function as a 10-K for domestic companies. Our platform highlights changes between annual filings so you can spot shifts in reserve estimates or cost structures.
GMT Capital Corp. and Thomas E. Claugus filed Amendment No. 6 to Schedule 13G reporting beneficial ownership in ERO Copper Corp. They report 6,509,454 shares of common stock, representing 6.28% of the class, with shared voting and dispositive power and no sole power. The filing lists the Date of Event as 09/30/2025.
The percentage is calculated using 103,607,249 shares outstanding as of August 28, 2025, as referenced from a Short Form Base Shelf Prospectus. The certification states the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control.
FIL Limited and affiliates disclosed a passive stake in Ero Copper Corp. In an amended Schedule 13G, the group reported beneficial ownership of 11,471,710 shares of common stock, representing 11.1% of the class as of the 10/31/2025 event date.
According to the filing, FIL Limited has sole voting power over 10,220,016 shares and sole dispositive power over 11,471,710 shares, with no shared voting or dispositive power. Co-reporting persons include Pandanus Partners, L.P. and Pandanus Associates, Inc.
The certification states the securities were acquired and are held in the ordinary course and not for the purpose of changing or influencing control of the issuer.
FIL Limited and affiliated entities filed a Schedule 13G reporting beneficial ownership of 6,703,995 shares of Ero Copper Corp common stock, representing 6.5% of the class as of September 30, 2025.
The filing lists sole voting power over 6,149,891 shares and sole dispositive power over 6,703,995 shares, with no shared voting or dispositive power. Reporting persons include FIL Limited, Pandanus Partners, L.P., and Pandanus Associates, Inc.
The signatory certifies the securities were acquired and are held in the ordinary course of business and not for the purpose of changing or influencing control of the issuer.
Ero Copper Corp. furnished a Form 6-K announcing Exhibit 99.1, the Ero Copper 2024 Sustainability Report. The exhibit is incorporated by reference into the company’s Form S-8 (File No. 333-264821) and Form F-10 (File No. 333-274097). The filing also notes the company files annual reports under cover of Form 40-F.
This Schedule 13G/A reports that GMT Capital Corp. and Thomas E. Claugus beneficially own 7,467,055 shares of Ero Copper Corp. common stock, representing 7.21% of the outstanding class based on 103,572,066 shares. The disclosed position is held through managed funds and certain sub-advisory and separate account clients consolidated as the Managed Funds and Accounts.
The filing identifies GMT Capital as the reporting investment adviser (type IA) and Mr. Claugus as the control person (type HC). The reporting pages show 0 sole voting or dispositive power and 7,467,055 shared voting and dispositive power. Item 10 certifies the securities were acquired and are held in the ordinary course of business and not to effect a change of control.
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