SCHEDULE: GMT Capital Reports 4.3% Stake in ERO Copper

GMT Capital Corp. and Thomas E. Claugus have reported a 4.3% beneficial ownership stake in ERO Copper Corp. as of December 31, 2025.

Summary

• GMT Capital Corp. and Thomas E. Claugus collectively beneficially own 4,472,154 shares of ERO Copper Corp. common stock.
• This ownership represents 4.30% of the total outstanding common stock of ERO Copper Corp.
• The percentage is calculated based on 103,890,254 shares of common stock outstanding as of November 4, 2025, as reported in the issuer's Management Discussion and Analysis.
• Both reporting persons hold shared voting power and shared dispositive power over these shares.
• This filing is an Amendment No. 7 to a Schedule 13G, indicating an update to previously reported beneficial ownership.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral filing, primarily a regulatory disclosure of beneficial ownership that does not inherently convey positive or negative sentiment regarding the issuer's performance or prospects.

Future Outlook

NA

Industry Context

StockSavvy.ai notes that Schedule 13G filings provide transparency into significant institutional holdings, which can signal investor confidence or strategic positioning within the copper mining sector. This filing indicates a continued stake by GMT Capital in ERO Copper, a company operating in the base metals industry.

Stakeholder Impact

• Shareholders: Provides transparency on significant institutional ownership, which can influence market perception and trading activity.

Key Dates

Keywords

ERO Copper Corp, GMT Capital Corp, Thomas E. Claugus, Schedule 13G, beneficial ownership, common stock, copper mining, institutional ownership