Shares of Ferroglobe PLC (GSM) tumbled 8.65% in pre-market trading on Thursday, 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 adjusted EBITDA, reflecting challenging market conditions, particularly in Europe.

According to the earnings report, Ferroglobe's Q3 2025 sales dropped 24% to $311.7 million from $386.9 million in the previous quarter. The company's adjusted EBITDA also decreased to $18.3 million from $21.6 million, resulting in an adjusted EBITDA margin of 5.9%. The primary factor behind the poor performance was a substantial 51% decline in shipments in Europe, attributed to low-priced imports from China.

Despite the overall negative results, Ferroglobe highlighted some positive developments, including a strong preliminary U.S. Silicon Metal AD/CVD decision, expected trade measures in the EU, and the signing of a multi-year energy agreement for French operations. However, these factors were not enough to offset investor concerns about the company's current financial performance, leading to the sharp pre-market sell-off.