Spouse-controlled firm boosts Ferroglobe (GSM) stake with 26K-share buy

Rhea-AI Filing Summary

Ferroglobe PLC director Silvia Villar-Mir de Fuentes reported an indirect open-market purchase of ordinary shares linked to her family. On 2026-03-23, a corporation controlled by her spouse bought 26,000 Ferroglobe ordinary shares at an average price of $3.8586 per share, bringing that entity’s holdings to 121,226 shares.

She also reports additional indirect holdings of 78,500 shares held by her spouse and 73,890 shares held by Panarea Capital SL, plus 100 shares held directly. The filing shows net share accumulation, with no reported sales or derivative transactions.

Insider Trade Summary

Net Buyer: 26,000 shares ($100,324)

Net Buy 4 txns

Insider Villar-Mir de Fuentes Silvia

Role Director

Bought 26,000 shs ($100K)

Type	Security	Shares	Price	Value
Purchase	Ordinary shares	26,000	$3.8586	$100K
holding	Ordinary shares	--	--	--
holding	Ordinary shares	--	--	--
holding	Ordinary shares	--	--	--

Holdings After Transaction: Ordinary shares — 121,226 shares (Indirect, By a corporation controlled by spouse); Ordinary shares — 100 shares (Direct)

Footnotes (1)

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Villar-Mir de Fuentes Silvia

(Last) (First) (Middle)

THE SCALPEL, 18TH FLOOR, 52 LIME STREET

(Street)

LONDON EC3M 7AF

(City) (State) (Zip)

UNITED KINGDOM

(Country)

2. Issuer Name and Ticker or Trading Symbol
Ferroglobe PLC [ GSM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/23/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Ordinary shares	03/23/2026		P		26,000	A	$3.8586	121,226	I	By a corporation controlled by spouse
Ordinary shares								78,500	I	By spouse
Ordinary shares								73,890	I	By Panarea Capital SL
Ordinary shares								100	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

	/s/ Marta Bragado, attorney-in-fact for Silvia Villar-Mir de Fuentes	03/25/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Ferroglobe (GSM) report for Silvia Villar-Mir de Fuentes?

Ferroglobe reported that a corporation controlled by the spouse of director Silvia Villar-Mir de Fuentes bought 26,000 ordinary shares on 2026-03-23. The shares were acquired in an open-market purchase at an average price of $3.8586 per share.

How many Ferroglobe (GSM) shares were held after the 26,000-share purchase?

After the 26,000-share purchase, the corporation controlled by the director’s spouse held 121,226 Ferroglobe ordinary shares. This figure reflects the reported indirect position for that specific entity, separate from other indirect family holdings and the director’s small direct share position.

Were any Ferroglobe (GSM) shares sold in this Form 4 filing?

No sales were reported. The Form 4 shows a net-buy pattern, with 26,000 shares purchased and no shares sold. The remaining entries reflect reported holdings for other indirect and direct positions, not additional buy or sell transactions.

What other Ferroglobe (GSM) holdings are reported for Silvia Villar-Mir de Fuentes?

In addition to the 121,226 shares held by a spouse-controlled corporation, the filing lists 78,500 shares held indirectly by her spouse, 73,890 shares held indirectly by Panarea Capital SL, and 100 shares held directly in her own name.

Does the Ferroglobe (GSM) Form 4 include any derivative or option transactions?

No derivative or option activity is disclosed. The Form 4 derivative section is empty, and the transaction summary shows zero derivative transactions. The only active trade reported is the open-market purchase of 26,000 ordinary shares on 2026-03-23.