Ferroglobe: Grupo Villar Mir reports 35.7% stake

The reported position includes 58,265,434 shares of sole voting power and 8,490,000 shares of shared dispositive power.

Rhea-AI Filing Summary

Ferroglobe PLC (GSM) reporting person Grupo Villar Mir, S.A.U. reported beneficial ownership of 66,755,434 ordinary shares, or 35.7% of the class. It reported sole voting power over 58,265,434 shares, shared voting power over 0 shares, sole dispositive power over 58,265,434 shares, and shared dispositive power over 8,490,000 shares. The ownership percentage is based on 186,908,299 ordinary shares outstanding as of October 8, 2026.

Key Figures

Beneficially owned: 66,755,434 ordinary shares Percent of class: 35.7% Sole voting power: 58,265,434 shares +4 more

7 metrics

Beneficially owned 66,755,434 ordinary shares Grupo Villar Mir, S.A.U.

Percent of class 35.7% Calculated using shares outstanding as of October 8, 2026

Sole voting power 58,265,434 shares Grupo Villar Mir, S.A.U.

Shared voting power 0 shares Grupo Villar Mir, S.A.U.

Sole dispositive power 58,265,434 shares Grupo Villar Mir, S.A.U.

Shared dispositive power 8,490,000 shares Grupo Villar Mir, S.A.U.

Ordinary shares outstanding 186,908,299 shares As of October 8, 2026

Key Terms

beneficially owned, Sole Voting Power, Shared Dispositive Power

3 terms

beneficially owned financial

"Amount beneficially owned"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole Voting Power financial

"Sole Voting Power 58,265,434.00"

Sole voting power is the exclusive right to cast votes attached to a shareholder’s stock without needing approval from anyone else. Like holding the only remote control for a TV, it lets that holder decide corporate matters such as board members, mergers, and policy changes, making it important to investors because it concentrates control and can strongly influence a company’s strategy and the value of its shares.

Shared Dispositive Power financial

"Shared Dispositive Power 8,490,000.00"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many Ferroglobe (GSM) shares does Grupo Villar Mir beneficially own?

Grupo Villar Mir, S.A.U. reported beneficial ownership of 66,755,434 ordinary shares, representing 35.7% of the class.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Available on EDGAR 10/09/2026 - 05:02 PM Accepted by SEC EDGAR 10/09/2026 - 05:02 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 7)

Ferroglobe PLC

(Name of Issuer)

Ordinary Shares

(Title of Class of Securities)

G33856108

(CUSIP Number)

09/30/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): G33856108

1

Names of Reporting Persons

Grupo Villar Mir, S.A.U.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

SPAIN

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 58,265,434.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 58,265,434.00
8	Shared Dispositive Power 8,490,000.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

66,755,434.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

35.7 %

12

Type of Reporting Person (See Instructions)

OO

Comment for Type of Reporting Person: Note to Item 1: The percent ownership is calculated based upon an aggregate of 186,908,299 Ordinary Shares outstanding as of October 8, 2026, as notified to Grupo Villar Mir, S.A.U. by Ferroglobe PLC.

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Ferroglobe PLC
(b)	Address of issuer's principal executive offices: 13 Chesterfield Street, London, W1J 5JN, United Kingdom
Item 2.
(a)	Name of person filing: Grupo Villar Mir, S.A.U.
(b)	Address or principal business office or, if none, residence: Torre Espacio Paseo de la Castellana, 259 D, Planta 46N 28046 Madrid, Spain
(c)	Citizenship: Grupo Villar Mir, S.A.U. is a Spanish public limited liability company in the form of a sociedad anonima
(d)	Title of class of securities: Ordinary Shares
(e)	CUSIP No.: G33856108
Item 4.	Ownership
(a)	Amount beneficially owned: The information in Item 1 and Items 5 through 11 on the cover pages of this Schedule 13G is incorporated herein by reference.
(b)	Percent of class:
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote:
	(ii) Shared power to vote or to direct the vote:
	(iii) Sole power to dispose or to direct the disposition of:
	(iv) Shared power to dispose or to direct the disposition of:
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.	Certifications:
	Not Applicable

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Grupo Villar Mir, S.A.U.

Signature:	/s/ Manuel Garrido Ruano
Name/Title:	Manuel Garrido Ruano/Chief Financial Officer
Date:	10/09/2026