NASDAQ:GSM

Ferroglobe Stock Insider Trading

Basic Materials > Industrial Materials

Buy GSM

*Your capital is at risk

$4.63

+0.140 (+3.12%)

At Close: Aug 10, 2026

Ferroglobe Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be positive at 100.00. In total, the insiders bought 1.39M and sold 713.33K GSM shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	100.00
● Buy	1.39M shares
● Sell	713.33K shares
34% Buy Activity Weak Negative Correlation
No Significant Signals No statistically significant buy or sell signals detected in recent insider data.

Historical Insider Trades

Date	Type	Person	Role	Amount
Dec 23, 2015 Sell	Stock Appreciation Right D-Return	Eizenstat Stuart E Director	Director	12 784 Value: $160.3K
Dec 23, 2015 Sell	Restricted Stock Unit D-Return	Eizenstat Stuart E Director	Director	1 695 Value: $0
Dec 23, 2015 Sell	Stock Option D-Return	Eizenstat Stuart E Director	Director	1 226 Value: $25.2K
Dec 23, 2015 Sell	Stock Option D-Return	Eizenstat Stuart E Director	Director	25 000 Value: $533.5K
Dec 23, 2015 Sell	Stock Option D-Return	Eizenstat Stuart E Director	Director	4 990 Value: $56.6K
Dec 23, 2015 Sell	Stock Option D-Return	Eizenstat Stuart E Director	Director	3 297 Value: $44.3K
Dec 23, 2015 Sell	Stock Option D-Return	Eizenstat Stuart E Director	Director	225 Value: $4K
Dec 23, 2015 Sell	Stock Option D-Return	Eizenstat Stuart E Director	Director	1 446 Value: $32.4K
Dec 23, 2015 Sell	Common Stock D-Return	Eizenstat Stuart E Director	Director	5 079 Value: $0
Dec 23, 2015 Sell	Stock Appreciation Right D-Return	Barger Donald G Jr Director	Director	2 303 Value: $38.5K
Dec 23, 2015 Sell	Stock Appreciation Right D-Return	Barger Donald G Jr Director	Director	12 784 Value: $160.3K
Dec 23, 2015 Sell	Restricted Stock Unit D-Return	Barger Donald G Jr Director	Director	1 695 Value: $0
Dec 23, 2015 Sell	Stock Option D-Return	Barger Donald G Jr Director	Director	1 226 Value: $25.2K
Dec 23, 2015 Sell	Stock Option D-Return	Barger Donald G Jr Director	Director	5 000 Value: $102.7K
Dec 23, 2015 Sell	Stock Option D-Return	Barger Donald G Jr Director	Director	7 500 Value: $145.8K
Dec 23, 2015 Sell	Stock Option D-Return	Barger Donald G Jr Director	Director	12 500 Value: $228.9K
Dec 23, 2015 Sell	Stock Option D-Return	Barger Donald G Jr Director	Director	4 990 Value: $56.6K
Dec 23, 2015 Sell	Stock Option D-Return	Barger Donald G Jr Director	Director	3 297 Value: $44.3K
Dec 23, 2015 Sell	Stock Option D-Return	Barger Donald G Jr Director	Director	225 Value: $4K
Dec 23, 2015 Sell	Stock Option D-Return	Barger Donald G Jr Director	Director	1 446 Value: $32.4K
Dec 23, 2015 Sell	Common Stock D-Return	Barger Donald G Jr Director	Director	8 630 Value: $0
Dec 23, 2015 Sell	Stock Appreciation Right D-Return	Schriber Alan Richard Director	Director	2 303 Value: $38.5K
Dec 23, 2015 Sell	Stock Appreciation Right D-Return	Schriber Alan Richard Director	Director	12 784 Value: $160.3K
Dec 23, 2015 Sell	Restricted Stock Unit D-Return	Schriber Alan Richard Director	Director	1 695 Value: $0
Dec 23, 2015 Sell	Stock Option D-Return	Schriber Alan Richard Director	Director	1 226 Value: $25.2K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT FERROGLOBE PLC

Ferroglobe PLC operates in the silicon and specialty metals industry in the United States, Europe, and internationally. It provides silicone chemicals that are used in a range of applications, including personal care items, construction-related products, health care products, and electronics, as well as silicon metal for primary and secondary aluminum producers; silicomanganese, which is used as deoxidizing agent in the steel manufacturing proces...

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