GSM Joins Russell 2000/3000, Expanding Institutional Reach

Rhea-AI Filing Summary

Ferroglobe PLC (NASDAQ: GSM) filed a Form 6-K dated 2 July 2025 to furnish a press release announcing its inclusion in the Russell 2000® and Russell 3000® Indexes effective 30 June 2025. The Russell US indexes, maintained by FTSE Russell, capture the 3,000 largest U.S. companies by market capitalisation as of 30 April each year; membership in the Russell 3000 automatically places a company in the large-cap Russell 1000 or small-cap Russell 2000 and in the corresponding growth/value style indexes.

CEO Dr Marco Levi described the addition as “a meaningful milestone” that reflects the company’s strategic progress and will increase visibility among institutional investors. According to the release, approximately $10.6 trillion in assets were benchmarked against Russell US indexes at the end of June 2024, underscoring the potential reach of the inclusion.

The filing also states that the information is incorporated by reference into the company’s existing Form S-8 and Form F-3 registration statements. No new financial metrics, guidance, or transactional details were disclosed in the document.

Positive

• Added to the Russell 2000® and Russell 3000® Indexes, boosting GSM’s visibility with institutional investors and passive index funds.

Negative

• None.

Insights

Equity Research Analyst

TL;DR Index inclusion broadens GSM’s investor base and should enhance liquidity; no new financial data provided.

The Russell 2000 and 3000 additions place Ferroglobe in widely tracked benchmarks used by passive and active managers. With $10.6 trillion benchmarked, even modest weighting can spur incremental demand from index funds and quantitative strategies, improving share liquidity and potentially narrowing bid-ask spreads. While not altering fundamentals, greater institutional visibility can lower the company’s cost of capital over time. The absence of fresh earnings or guidance means the near-term valuation impact depends on passive inflows rather than operational changes.

Index & ETF Specialist

TL;DR Russell entry is procedurally routine but still constructive for GSM’s trading profile; impact moderate.

FTSE Russell’s annual reconstitution is rule-based: GSM’s market cap now meets the threshold for the small-cap Russell 2000. The automatic linkage to style indexes (growth/value) widens exposure across multiple ETFs. However, because weightings are proportional to float-adjusted market cap, the dollar value of forced buying may be limited. Investors should view the news as a liquidity catalyst rather than a signal of changing business fundamentals.

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 UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

Pursuant to Rule 13a-16 or 15d-16

under the Securities Exchange Act of 1934

For the Month of July 2025

Commission File Number: 001-37668

FERROGLOBE PLC

(Name of Registrant)

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13 Chesterfield Street,

London W1J 5JN, United Kingdom

(Address of Principal Executive Office)

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Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  ☒ Form 40-F  ☐

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This Form 6-K consists of the following, which appears immediately following the signature page to this Form 6-K:

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● Press release dated June 30, 2025, announcing that Ferroglobe PLC joined the Russell 2000® and Russell 3000® Indexes.

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This Form 6-K is being furnished for the purpose of incorporating by reference the information in this Form 6-K into (a) Registration Statement No. 333-208911 on Form S-8, and (b) Registration Statement No. 333-258254 on Form F-3 and related prospectuses, as such registration statements and prospectuses may be amended from time to time.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

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	Date: July 2, 2025
	FERROGLOBE PLC
	by	/s/ Marco Levi
		Name: Marco Levi
		Title: Chief Executive Officer (Principal Executive Officer)

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Ferroglobe PLC Joins the Russell 2000® and Russell 3000® Indexes

LONDON, June 30, 2025 (GLOBE NEWSWIRE) -- Ferroglobe PLC (NASDAQ: GSM), a leading global producer of silicon metal, silicon-based and manganese-based specialty alloys, announces its inclusion in the Russell 2000® and Russell 3000® Indexes effective today.

The Russell US indexes, maintained by FTSE Russell, capture the 3,000 largest U.S. stocks as of April 30 each year, ranking them by total market capitalization. Membership in the Russell 3000® Index brings automatic inclusion in either the large-cap Russell 1000® Index or small-cap Russell 2000® Index, as well as the appropriate growth and value style indexes. FTSE Russell determines membership for its Russell indexes primarily by objective, market-capitalization rankings and style characteristics.

Dr. Marco Levi, Ferroglobe’s Chief Executive Officer, commented, “Being added to the Russell indexes is a meaningful milestone for Ferroglobe, which reflects the progress we’ve made in strengthening our business and executing our strategic vision. This inclusion increases our visibility among institutional investors and reinforces our long-term commitment to innovation, operational excellence, and delivering sustainable value to our shareholders.”

The Russell indexes are widely used by investment managers and institutional investors for index funds and as benchmarks for active investment strategies. As of the end of June 2024, approximately $10.6 trillion in assets are benchmarked against the Russell US indexes.

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About Ferroglobe

Ferroglobe is a leading global producer of silicon metal, silicon and manganese-based ferroalloys serving a customer base across the globe in dynamic and fast-growing end markets, such as solar, automotive, consumer products, construction and energy. The Company is based in London. For more information, visit https://investor.ferroglobe.com.

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INVESTOR CONTACT:

Alex Rotonen, CFA
Vice President, Investor Relations
investor.relations@ferroglobe.com

MEDIA CONTACT:

Cristina Feliu Roig
Vice President, Communications & Public Affairs
corporate.comms@ferroglobe.com

FAQ

What did Ferroglobe (GSM) announce on June 30 2025?

The company announced its inclusion in the Russell 2000® and Russell 3000® Indexes effective the same day.

When does Ferroglobe’s Russell index inclusion take effect?

The inclusion became effective 30 June 2025 according to FTSE Russell’s annual reconstitution.

Why is joining the Russell 3000 important for GSM investors?

Membership places GSM in widely tracked benchmarks, potentially attracting passive fund inflows and improving share liquidity.

Which specific Russell indexes will Ferroglobe join?

Ferroglobe will be in the Russell 3000® Index and, based on its size, the Russell 2000® Index, plus associated growth/value style indexes.

How much capital is benchmarked to Russell US indexes?

The press release notes approximately $10.6 trillion in assets were benchmarked as of end-June 2024.