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 June, 2021

Commission File Number: 001-37668

FERROGLOBE PLC

(Name of Registrant)

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5 Fleet Place

London, EC4M7RD

(Address of Principal Executive Office)

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

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):      ☐

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):      ☐

Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b):  N/A

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

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Notification of ISIN and Common Codes in Connection with Offer to Exchange the 9⅜% Senior Notes Due 2022 and Offer to Subscribe for Additional 9.0% Senior Secured Notes Due 2025

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LONDON, June 29, 2021 (GLOBE NEWSWIRE) – On June 23, 2021, Ferroglobe PLC (the “Parent”), Ferroglobe Finance Company, PLC (the “UK Issuer”) and Globe Specialty Metals, Inc. (“Globe” and, together with the UK Issuer, the “Issuers”) commenced the following transactions pursuant to the offering and consent solicitation memorandum dated June 23, 2021 (the “Offering and Consent Solicitation Memorandum”):

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Exchange Offer

In connection with the Exchange Offer, the Issuers hereby notify the Qualifying Noteholders of the following ISIN and common codes with respect to the New Notes to be issued on the Settlement Date:

IAI: XS2360592609 / 236059260
144A: XS2360592195 / 236059219
Reg S: XS2360591890 / 236059189

The Exchange Offer is scheduled to expire at 11:59 p.m., New York City time, on July 21, 2021, unless extended as provided in the Offering and Consent Solicitation Memorandum. For Qualifying Noteholders Participating in the Super Senior Notes Offer, the deadline for submitting Custody Instructions to DTC on the Exchange Offer and the Consent Solicitation is July 7, 2021.

Super Senior Notes Offer

In connection with the Super Senior Notes Offer, the UK Issuer hereby notifies Qualifying Noteholders of the following temporary ISIN and common codes with respect to the additional Super Senior Notes to be issued on the Settlement Date:

IAI: XS2360518208 / 236051820
144A: 236051765 / XS2360517655
Reg S: XS2360513746 / 236051374

The Super Senior Notes Offer Subscription Deadline is July 7, 2021.

Capitalized terms used but not defined in this release shall have the meanings set forth in the Offering and Consent Solicitation Memorandum.

About Ferroglobe

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

Forward-Looking Statements

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 Issuers’ future plans, strategies and expectations. Forward-looking statements often use forward-looking terminology, including words such as “anticipate”, “believe”, “could”, “estimate”, “expect”, “forecast”, “guidance”, “intends”, “likely”, “may”, “plan”, “potential”, “predicts”, “seek”, “will” and words of similar meaning or the negative thereof.

Forward-looking statements contained in this press release are based on information currently available to Issuers and assumptions that management believe to be reasonable but are inherently uncertain. As a result, Issuers’ 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 Ferroglobe’s control.

All information in this press release is as of the date of its release. Issuers do 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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INVESTOR CONTACT:

Gaurav Mehta

Executive Vice President - Investor Relations

investor.relations@ferroglobe.com

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MEDIA CONTACT:

Cristina Feliu Roig

Executive Director – Communications & Public Affairs

corporate.comms@ferroglobe.com

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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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