Form 6-K Ferroglobe PLC For: Aug 04

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 August 2026

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.

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This Form 6-K consists of the following materials, which appear immediately following this page:

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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

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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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Ferroglobe Reports Second Quarter 2026 Financial Results

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Second Quarter Highlights
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•  Advancing strategic critical materials initiatives, leveraging existing assets to support growing demand for secure Western supply chains

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LONDON, August 4, 2026 (GLOBE NEWSWIRE) – Ferroglobe PLC (NASDAQ: GSM) (“Ferroglobe”, the “Company”, or the “Parent”), a leading global producer of silicon metal, silicon-based and manganese-based specialty alloys, today announced financial results for the second quarter of 2026.

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Financial Highlights

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Dr. Marco Levi, Ferroglobe’s Chief Executive Officer, commented, “Our second quarter results reflect solid execution of our strategy despite a challenging pricing environment. Strong volume growth, positive free cash flow generation, and further debt reduction reinforce the resilience of our operating platform and our disciplined approach to capital allocation.  

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“At the same time, we continue to advance the development of our critical materials strategy by leveraging our existing industrial footprint, metallurgical expertise, and established customer relationships to create new avenues for growth. Combined with increasing support for Western supply chains and domestic production, we believe Ferroglobe is uniquely positioned to benefit from the growing focus on critical materials, industrial security, and onshoring initiatives across the U.S. and Europe,” concluded Dr. Levi.

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Consolidated Sales

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In the second quarter of 2026, Ferroglobe reported sales of $378.6 million, an 8.9% increase from the prior quarter and a 2.1% decrease from the comparable prior-year period. The sequential improvement was mainly driven by higher sales volumes of silicon metal and silicon-based alloys, as well as higher average selling prices for manganese-based alloys, partially offset by lower sales volumes for manganese-based alloys and lower average selling prices for silicon metal and silicon-based alloys. Sales of silicon metal increased by $21.7 million, silicon-based alloys increased by $2.6 million, and manganese-based alloys increased by $0.5 million compared with the prior quarter.

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Product Category Highlights

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Silicon Metal

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Silicon metal revenue in the second quarter was $105.8 million, an increase of 25.8% from the prior quarter. The average selling price decreased by 5.9%, driven by lower pricing across the U.S. and EMEA, as elevated market availability and cautious customer purchasing continued to weigh on realized prices, particularly in Europe. Shipments increased 33.7%, reflecting higher volumes in both EMEA and the U.S. Adjusted EBITDA decreased to $(2.7) million in the second quarter, as compared with $(2.3) million in the prior quarter, primarily due to lower realized pricing. Adjusted EBITDA margin improved to (2.5%) in the second quarter from (2.7%) in the prior quarter.
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Silicon-Based Alloys

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Silicon-based alloy revenue in the second quarter was $124.9 million, an increase of 2.2% from the prior quarter. The average selling price decreased by 1.5%, as higher realized prices in South Africa were more than offset by softer pricing in Europe and the U.S. amid subdued steel demand and ample market availability. Shipments increased 3.7%, primarily reflecting stronger volumes in Europe, partially offset by lower volumes in South Africa and the U.S. Adjusted EBITDA increased to $14.5 million in the second quarter of 2026, compared with $6.8 million in the prior quarter, primarily driven by improved operating costs and higher shipments, partially offset by lower realized pricing. Adjusted EBITDA margin increased to 11.6% in the second quarter, compared with 5.6% in the prior quarter.

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Manganese-Based Alloys

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Manganese-based alloy revenue in the second quarter was $107.6 million, an increase of 0.4% from the prior quarter. The average selling price increased by 1.6%, reflecting higher pricing in both Europe and the U.S. In Europe, pricing was

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supported by the impact of EU safeguard measures and additional duties on certain imports, despite continued weakness in underlying demand. Shipments decreased 1.2%, primarily reflecting lower volumes in Europe, partially offset by a modest increase in the U.S. Adjusted EBITDA increased to $13.0 million in the second quarter, compared with $10.0 million in the prior quarter, primarily reflecting higher realized pricing, improved operating performance, and a more favorable sales mix, partially offset by higher manganese ore, energy, and transportation costs. Adjusted EBITDA margin increased to 12.1% in the second quarter, compared with 9.3% in the prior quarter.

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Raw materials and energy consumption for production

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Raw materials and energy consumption for production decreased to 51.5% of sales in the second quarter of 2026, compared with 64.3% in the prior quarter. This improvement was primarily driven by the recognition of a $59.9 million positive fair value adjustment related to long-term energy contracts, compared with a $5.5 million gain recognized in the first quarter of 2026. Excluding the impact of power purchase agreements, raw materials and energy consumption represented 67.3% of sales in the second quarter of 2026, compared with 65.9% in the prior quarter, primarily reflecting pressure on realized selling prices across most product categories and changes in the sales mix, while raw material and energy costs did not decline at the same pace, resulting in a narrowing of the price-cost spread.

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Net Profit (Loss) Attributable to the Parent

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In the second quarter of 2026, net profit attributable to the parent was $60.4 million, or $0.32 per diluted share, compared to a net loss attributable to the parent of $7.1 million, or $(0.04) per diluted share, in the prior quarter. The return to profitability primarily reflected a $59.9 million positive fair value adjustment related to long-term energy contracts, as well as improved operating performance, partially offset by higher selling expenses associated with increased sales volumes. The Company reported breakeven adjusted diluted earnings per share for the second quarter of 2026, compared with an adjusted diluted loss per share of $(0.07) in the prior quarter.

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Adjusted EBITDA

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Adjusted EBITDA increased to $13.1 million in the second quarter of 2026, compared with $3.3 million in the prior quarter. The sequential improvement reflected stronger shipment volumes and improved operating performance across the portfolio, supported by continued cost efficiency initiatives. These benefits were partially offset by higher selling and distribution costs.

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Total Cash, Adjusted Gross Debt and Working Capital

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(2) Adjusted gross debt excludes bank borrowings on our factoring program and the impact of leasing standard IFRS16
(3) Total working capital is comprised of inventories, trade receivables and other receivables minus trade and other payables

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Total cash was $93.2 million as of June 30, 2026, a decrease of $3.2 million from $96.4 million as of March 31, 2026. Adjusted gross debt decreased by $20.1 million to $130.9 million, resulting in net debt of $37.7 million as of June 30, 2026, representing a decrease of $16.9 million from the prior quarter.

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During the second quarter, cash flows provided by operating activities were $37.0 million, and net cash used in investing activities was $13.6 million. Cash used in financing activities was $25.9 million as a result of lease payments of $3.9 million, dividend payments of $2.8 million, interest payments of $3.7 million, the principal repayments of other financing liabilities of $4.6 million, and financing facilities payments in South Africa, France and Spain totaling $11.4 million, partially offset by net cash proceeds from the sale of short-term commercial paper totaling $0.5 million.

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Total working capital was $398.4 million as of June 30, 2026, a decrease of $32.8 million from $431.2 million at the end of the prior quarter. The decrease in our working capital balance during the quarter was primarily driven by a decrease of $12.8

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million in inventories, $7.8 million in other receivables and an increase of $20.7 million in trade and other payables, partially offset by an $8.6 million increase in trade receivables.

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Beatriz García-Cos, Ferroglobe’s Chief Financial Officer, commented, “The second quarter reflected a meaningful improvement in operating performance, with adjusted EBITDA increasing to $13.1 million, from $3.3 million in the first quarter, free cash flow of $20.4 million, and net debt declining to $37.7 million. Higher shipment volumes, disciplined working capital management, and continued cost control drove solid cash generation and further strengthened our balance sheet. With ample liquidity, reduced leverage, and a consistent dividend, we remain focused on maintaining financial flexibility while supporting the growth opportunities emerging from our core business and strategic critical materials initiatives.”

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Capital Returns

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During the second quarter, Ferroglobe did not repurchase shares and paid a quarterly cash dividend of $ 0.015 per share on June 30, 2026. Our next cash dividend of $0.015 per share will be paid on September 29, 2026, to shareholders of record as of September 22, 2026.

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Conference Call

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Ferroglobe invites all interested persons to participate in our conference call at 8:30 AM, Eastern Time on August 5, 2026. The call may also be accessed via an audio webcast.

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To join via phone:

Conference call participants should pre-register using this link:

https://register-conf.media-server.com/register/BI66a0208bb9f34859af10be34832acc52

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Once registered, you will receive the dial-in numbers and a personal PIN, which are required to access the conference call.

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To join via webcast:

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A simultaneous audio webcast and replay will be accessible here:

https://edge.media-server.com/mmc/p/ekm3qzst

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About Ferroglobe

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

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Forward-Looking Statements

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This release contains “forward-looking statements” within the meaning of U.S. securities laws. Forward-looking statements are not historical facts but are based on certain assumptions of management and describe the Company’s future plans, strategies and expectations. Forward-looking statements often use forward-looking terminology, including words such as “anticipate”, “believe”, “could”, “estimate”, “expect”, “should”,“forecast”, “guidance”, “intends”, “likely”, “may”, “plan”, “potential”, “predicts”, “seek”, “target”, “will” and words of similar meaning or the negative thereof.

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Forward-looking statements contained in this press release are based on information currently available to the Company and assumptions that management believe to be reasonable, but are inherently uncertain. As a result, Ferroglobe’s actual results, performance or achievements may differ materially from those expressed or implied by these forward-looking statements, which are not guarantees of future performance and involve known and unknown risks, uncertainties and other factors that are, in some cases, beyond the Company’s control.

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Forward-looking financial information and other metrics presented herein represent the Company’s goals and are not intended as guidance or projections for the periods referenced herein or any future periods.

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All information in this press release is as of the date of its release. Ferroglobe does not undertake any obligation to update publicly any of the forward-looking statements contained herein to reflect new information, events or circumstances arising after the date of this press release. You should not place undue reliance on any forward-looking statements, which are made only as of the date of this press release.

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Non-IFRS Measures

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This document may contain summarized, non-audited or non-IFRS financial information. The information contained herein should therefore be considered as a whole and in conjunction with all the public information regarding the Company available, including any other documents released by the Company that may contain more detailed information. Adjusted EBITDA, adjusted EBITDA as a percentage of sales, working capital as a percentage of sales, adjusted EBITDA margin, working capital, adjusted net profit, adjusted diluted EPS, adjusted gross debt and net cash/(debt), are non-IFRS financial metrics that management uses in its decision making. Ferroglobe has included these financial metrics to provide supplemental measures of its performance. The Company believes these metrics are important and useful to investors because they eliminate items that have less bearing on the Company’s current and future operating performance and highlight trends in its core business that may not otherwise be apparent when relying solely on IFRS financial measures.

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INVESTOR CONTACT:

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Alex Rotonen, CFA

Vice President, Investor Relations

Email: [email protected]

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MEDIA CONTACT:

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Cristina Feliu Roig

Vice President, Communications & Public Affairs

Email:   [email protected]

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Ferroglobe PLC and Subsidiaries

Unaudited Condensed Consolidated Income Statement

(in thousands of U.S. dollars, except per share amounts)

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Ferroglobe PLC and Subsidiaries

Unaudited Condensed Consolidated Statement of Financial Position

(in thousands of U.S. dollars)

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Ferroglobe PLC and Subsidiaries

Unaudited Condensed Consolidated Statement of Cash Flows

(in thousands of U.S. dollars)

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