SEC Form 4 · Updated Daily
GSM
— FERROGLOBE PLC OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| Lopez Madrid Javier | Director · Officer | 147,200 | 2026-03-23 | P |
| Villar-Mir de Fuentes Silvia | Director | 121,226 | 2026-03-23 | P |
| Garcia Cos Muntanola Beatriz | Officer | 31,693 | 2026-08-14 | S |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-08-14 | Garcia Cos Muntanola Beatriz | Open-market sale | 32,292 | $4.30 | 31,693 |
| 2026-08-11 | Garcia Cos Muntanola Beatriz | Option exercise (derivative) | 36,784 | $0.00 | 0 |
| 2026-08-11 | Garcia Cos Muntanola Beatriz | Tax withholding | 5,091 | $4.63 | 63,985 |
| 2026-08-11 | Garcia Cos Muntanola Beatriz | Option exercise | 36,784 | $0.00 | 69,076 |
| 2026-03-23 | Lopez Madrid Javier | Open-market buy | 26,000 | $3.86 | 147,200 |
| 2026-03-23 | Villar-Mir de Fuentes Silvia | Open-market buy | 26,000 | $3.86 | 121,226 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.