Shares of Ferroglobe PLC (GSM) tumbled 7.10% in after-hours trading on Wednesday following the release of the company's disappointing third-quarter 2025 financial results. The silicon and specialty metals producer reported a significant decline in sales and a negative adjusted earnings per share, falling short of market expectations.

Ferroglobe's Q3 sales came in at $311.7 million, representing a sharp 19.4% decrease from the previous quarter and a substantial 28.1% year-over-year decline. The company's adjusted EBITDA for the quarter was $18.3 million, with an adjusted EBITDA margin of 11.7%. More concerning for investors was the reported adjusted earnings per share of -$0.02, indicating a loss for the quarter.

Despite the challenging quarter, Ferroglobe maintained a relatively stable financial position with total cash of $121.5 million and net debt of $5.2 million. The company also declared a dividend of $0.014 per share, payable on December 29, 2025. However, these positive aspects were overshadowed by the overall weak performance, leading to the significant after-hours stock plunge. Investors will likely be closely watching Ferroglobe's future quarters for signs of recovery and improved financial results.