Ferroglobe Plc Os (GSM): Congress and insider trades
Who in Congress and inside the company traded GSM, when each filing appeared, and what buying after each one would have earned against the S&P 500.
Key Facts
- Ferroglobe Plc Os (GSM) is a listed stock on NASDAQ.
- Insiders filed 2 open market buys worth $201K and 1 sell worth $139K, the latest filed 2026-08-20 (20 August 2026).
- Across 2 scored buys, Insiders averaged -30.0% against the S&P 500 (SPY) over the 90 days after disclosure, with 0% of them ahead of the index. That result is too few trades to tell.
- Data as of 2026-09-29 (29 September 2026).
Insider trades in GSM
as of 2026-08-20| Filed | Insider | Type | Shares | Price | Value | 90 day vs S&P |
|---|---|---|---|---|---|---|
| 20 Aug 2026 | Garcia Cos Muntanola Beatriz | sell | 32,292 | $4.30 | $139K | n/a |
| 25 Mar 2026 | Villar-Mir de Fuentes Silvia | buy | 26,000 | $3.86 | $100K | -30.0% |
| 25 Mar 2026 | Lopez Madrid Javier | buy | 26,000 | $3.86 | $100K | -30.0% |
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Related pages
Frequently asked questions
Who has bought GSM?
0 Congress buys by 0 members and 2 insider buys are on file. The tables on this page list every one.
Did buying GSM after a disclosure beat the market?
Across 2 scored buys, Insiders averaged -30.0% against the S&P 500 (SPY) over the 90 days after disclosure, with 0% of them ahead of the index. That result is too few trades to tell. A single stock is a small sample.
Sources: Congressional trades: STOCK Act disclosures, collected from CapitolTrades. Insider trades: SEC Form 4 filings, collected from Finviz. Prices: Yahoo Finance daily adjusted closes. Data as of 2026-09-29 (29 September 2026). About these sources.
Not investment advice. Past disclosed trades do not predict future returns. Disclosures are published late, so the trades shown are ones you could only have copied after the fact. Talk to a licensed adviser before you invest.