GSM Ferroglobe PLC
company
SEC Filings & Insider Trading Activity 2026

CIK: 1639877
Energy
Metal Mining 23 filings
Russell 2000
20-F: 11
SC 13G: 8
6-K: 4

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Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4

FormFiling DatePeriodAnalysisSEC
6-K
Aug 4, 2026---
6-K
Jun 18, 2026---
6-K
May 20, 2026--
6-K
May 5, 2026---
20-F
Mar 26, 2026Dec 31, 2025-
20-F
Apr 25, 2025Dec 31, 2024-
20-F
May 13, 2024Dec 31, 2023-
SC 13G
May 24, 2023--
20-F
May 1, 2023Dec 31, 2022-
SC 13G
Feb 13, 2023--
20-F
May 2, 2022Dec 31, 2021-
SC 13G
Feb 14, 2022--
SC 13G
Feb 3, 2022--
20-F
Apr 30, 2021Dec 31, 2020-
20-F
May 29, 2020Dec 31, 2019-
20-F
Apr 29, 2019Dec 31, 2018-
20-F
Apr 30, 2018Dec 31, 2017-
SC 13G
Apr 23, 2018--
20-F
May 1, 2017Dec 31, 2016-
20-F
May 2, 2016Dec 31, 2015-
SC 13G
Feb 19, 2016--
SC 13G
Feb 16, 2016--
SC 13G
Feb 12, 2016--

13F Fund Holdings: Quarterly Trend

Latest: Q1 2026

Aggregate GSM share value held by 13F filers tracked by SignalX, by quarter.

Position changes: Q4 2025 → Q1 2026
Top Buyers
Top Sellers
Closed Positions

Source: 13F-HR filings on SEC EDGAR (aggregated from 142 fund-quarter rows). Reflects only 13F filers tracked by SignalX, not the full institutional ownership universe.

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Frequently Asked Questions

Where can I find GSM insider trading activity (Form 4)?

SignalX aggregates every GSM Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.

How often does GSM file with the SEC?

Ferroglobe PLC (GSM) files a 10-K annual report once per year (typically within 60 days of fiscal year-end) and 10-Q quarterly reports three times per year. 8-K current reports are filed as needed when material events occur, and Form 4 insider transaction reports are due within two business days of a trade. SignalX monitors SEC EDGAR daily to surface every new GSM filing with AI-powered analysis.

What is the difference between 10-K, 10-Q, and 8-K SEC filings?

A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs, such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for Ferroglobe PLC (GSM).

What is GSM's SEC CIK number?

Ferroglobe PLC (GSM)'s SEC CIK (Central Index Key) number is 1639877. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 1639877 to look up all GSM filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.

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Insider trading data, fund holdings, cross-signal detection, and AI-powered analysis for 23+ filings.