Ferroglobe PLC (GSM)
$4.10+$0.05 (+1.23%) Today
de Fuentes Silvia Villar-Mir - Director
Madrid Javier Lopez - OfficerFerroglobe PLC provides silicon-based alloys and specialty metals. It produces silicon metal and silicon and manganese-based alloy, serving customers in the specialty chemical, aluminum, solar, steel, and ductile iron foundry industries. The company's operating segments include Canada - Silicon Metals, Canada - Silicon Alloys, U.S. - Silicon Metals, U.S. - Silicon Alloys, Europe - Manganese Alloys, Europe - Silicon Metals, Europe - Silicon Alloys, South Africa - Silicon Metals, South Africa - Silicon Alloys, and Other segments. The primary raw materials the company uses to produce its electrometallurgy products include its coal and quartz mining operations and its silicon metal and ferroalloy production. The firm generates key revenue from Silicon metal and Manganese-based alloys.
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Open-market sale | 1 | 32,292 | $139K |
| Option exercise | 2 | 73,568 | |
| Tax withholding / forfeiture | 1 | 5,091 |
Dollar totals are shown for open-market purchases and sales only. Grants, option exercises, gifts and tax withholding are reported by share count because they are not trades at a market price.
3 Form 4 filings on record, the earliest from Mar 25, 2026, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Cos Muntanola Beatriz Garcia - Officer | Option exercise | ORDINARY SHARES | 36,784 | $0.00 | - | |
| Cos Muntanola Beatriz Garcia - Officer | Tax withholding / forfeiture | ORDINARY SHARES | 5,091 | $4.63 | $24K | |
| Cos Muntanola Beatriz Garcia - Officer | Open-market sale | ORDINARY SHARES | 32,292 | $4.30 | $139K | |
| Cos Muntanola Beatriz Garcia - Officer | Option exercise | PERFORMANCE SHARE UNITS | 36,784 | $0.00 | - | |
| de Fuentes Silvia Villar-Mir - Director | Open-market purchase | Ordinary shares | 26,000 | $3.86 | $100K | |
| Madrid Javier Lopez - Officer | Open-market purchase | Ordinary shares | 26,000 | $3.86 | $100K |
Ferroglobe PLC (GSM) had 1 insider filing in the last 90 days, with the most recent on 2026-08-20. The full record for GSM runs to 3 Form 4 filings, the earliest from 2026-03-25. InsiderAlpha tracks every Form 4, Form 144, and 8-K filing in real time.
No insider purchases of GSM were filed in the last 90 days. 2 purchases are on record for this company.
1 insider sale of GSM was filed in the last 90 days, totaling $139K.
This page tracks GSM Form 4 insider transactions, Form 144 sale notices, and 8-K material event disclosures in one timeline. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
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Every Form 4 below links to the original document on SEC EDGAR, so the numbers on this page can be checked against the filing they came from.
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