Ferroglobe PLC (GSM) Insider Trading

Last 12 months

Insiders bought $201k and sold $139k on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. CHIEF FINANCE OFFICER Cos Muntanola Beatriz Garcia sold $139k on Aug 14, 50% of their stake, outside a plan.

Net open-market

+$62k

2 buys · 1 sale

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

2 / 1

executives and directors

Last open-market buy

Mar 2026

Mar 23, 2026

Get an email when GSM's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Aug 14	Cos Muntanola Beatriz Garcia CHIEF FINANCE OFFICER	SoldNo plan	32,292	$4.30	$139k	50%	Form 4
Mar 23	De Fuentes Silvia Villar-Mir Director	Bought	26,000	$3.86	$100k	10%	Form 4
Mar 23	Madrid Javier Lopez Executive Chairman	Bought	26,000	$3.86	$100k	9.5%	Form 4

Aug 14No plan
Cos Muntanola Beatriz Garcia
CHIEF FINANCE OFFICER · sold 32,292 at $4.30
$139k
50% of stake
Mar 23
De Fuentes Silvia Villar-Mir
Director · bought 26,000 at $3.86
$100k
10% of stake
Mar 23
Madrid Javier Lopez
Executive Chairman · bought 26,000 at $3.86
$100k
9.5% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch GSM, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Data sourced from company filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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