GSM · Insider Trading

Ferroglobe PLC Ordinary Shares

Every open-market purchase and sale reported by GSM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
2
code P
Sales
2
code S
Reporting Insiders
3
current holders
GSM — Recent Form 4 Transactions (latest 2026-09-24)
FiledInsiderRole TypeSharesValue
2026-09-24 de Fuentes Silvia Villar-Mir Director MIXED +21,228 −$29.69K
2026-09-24 Madrid Javier Lopez EXECUTIVE CHAIRMAN MIXED +21,228 −$29.69K
2026-08-20 Cos Muntanola Beatriz Garcia CHIEF FINANCE OFFICER MIXED −599 −$162.43K
2026-03-25 de Fuentes Silvia Villar-Mir Director Buy +26,000 +$100.32K
2026-03-25 Madrid Javier Lopez Executive Chairman Buy +26,000 +$100.32K
2015-12-24 Franklin Lavin Director D −4,440 —
2015-12-24 Joseph Douglas Ragan III Chief Financial Officer D −291,859 deriv. —
2015-12-24 Stephen Lebowitz Chief Legal Officer D −296,517 deriv. —
2015-12-24 Stuart E Eizenstat Director D −5,079 —
2015-12-24 Donald G Barger Jr Director D −8,630 —
2015-12-24 Bruce L Crockett Director D −31,302 deriv. —
2015-12-24 Alan Kestenbaum Executive Chairman D −8,887,338 —
2015-12-24 Alan Richard Schriber Director D −1,323 —
2015-12-23 Stephen Lebowitz Chief Legal Officer A +1,410 deriv. —
2015-12-23 Joseph Douglas Ragan III Chief Financial Officer A +1,566 deriv. —
2015-12-23 Alan Kestenbaum Executive Chairman A +97,339 deriv. —
2015-12-15 Alan Kestenbaum Executive Chairman A +340,000 deriv. —
2015-12-15 Joseph Douglas Ragan III Chief Financial Officer A +25,000 deriv. —
2015-12-15 Stephen Lebowitz Chief Legal Officer A +25,000 deriv. —
2015-09-22 Alan Kestenbaum Executive Chairman A +127,856 deriv. —
2015-09-22 Stephen Lebowitz Chief Legal Officer A +2,872 deriv. —
2015-09-22 Joseph Douglas Ragan III Chief Financial Officer A +4,743 deriv. —
2015-07-01 Alan Richard Schriber Director A +1,695 deriv. —
2015-07-01 Bruce L Crockett Director A +1,695 deriv. —
2015-07-01 Stuart E Eizenstat Director A +1,695 deriv. —
2015-07-01 Donald G Barger Jr Director A +1,695 deriv. —
2015-07-01 Franklin Lavin Director A +1,695 deriv. —
2015-04-28 Joseph Douglas Ragan III Chief Financial Officer A +10,000 deriv. —
2015-04-28 Stephen Lebowitz Chief Legal Officer A +10,000 deriv. —
2015-04-28 Jeff Bradley Chief Executive Officer A +440,000 deriv. —
2015-03-23 Jeff Bradley Chief Executive Officer A +6,931 deriv. —
2015-03-23 Joseph Douglas Ragan III Chief Financial Officer A +874 deriv. —
2015-03-23 Alan Kestenbaum Executive Chairman A +16,155 deriv. —
2015-03-04 Alan Richard Schriber Director A +2,303 deriv. —
2015-03-04 Franklin Lavin Director A +2,303 deriv. —
2015-03-04 Stuart E Eizenstat Director A +2,303 deriv. —
2015-03-04 Stephen Lebowitz Chief Legal Officer D −146,700 deriv. —
2015-03-04 Bruce L Crockett Director A +2,303 deriv. —
2015-03-04 Donald G Barger Jr Director A +2,303 deriv. —
2015-03-02 Alan Richard Schriber Director A +3,381 deriv. —
2015-03-02 Donald G Barger Jr Director A +3,381 deriv. —
2015-03-02 Stuart E Eizenstat Director A +3,381 deriv. —
2015-03-02 Franklin Lavin Director A +3,381 deriv. —
2015-03-02 Bruce L Crockett Director A +28,381 deriv. —
2015-01-07 Alan Kestenbaum Executive Chairman A +78,239 deriv. —
2015-01-07 Jeff Bradley Chief Executive Officer A +33,523 deriv. —
2015-01-07 Joseph Douglas Ragan III Chief Financial Officer A +1,875 deriv. —
2014-11-20 Franklin Lavin Director M +2,000 +$22.68K
2014-10-29 Franklin Lavin Director Sell −3,266 −$56.14K
2014-09-19 Alan Kestenbaum Executive Chairman Sell −50,000 −$1.00M
GSM — Current Insider Holders
InsiderRole Shares HeldValue
de Fuentes Silvia Villar-Mir Director 106,717 $411.93K
Madrid Javier Lopez EXECUTIVE CHAIRMAN 106,717 $411.93K
Cos Muntanola Beatriz Garcia CHIEF FINANCE OFFICER 63,985 $246.98K
GSM Insider Trading FAQ
Who are the insiders at GSM?
3 officers, directors and 10%+ beneficial owners currently report holdings in GSM via SEC Form 4.
Are GSM insiders buying or selling?
Across the 50 most recent Form 4 filings for GSM, 2 were open-market purchases (code P) and 2 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is GSM insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent GSM filing is dated 2026-09-24.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the GSM quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.