GSM / Ferroglobe PLC - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

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 2025 Commission File Number: 001-376

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 2025 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by chec

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

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) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check

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 June, 2025 Commission File Number: 001-37668 FERROGLOBE PLC

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 June, 2025 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom +44 (0)750 130 8322 (Address of Principal Executive Office) Indicate by ch

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 May 2025 Commission File Number: 001-37668

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 May 2025 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check ma

Ferroglobe PLC Annual Report and Accounts 2024

TABLE OF CONTENTS  Exhibit 99.2 Ferroglobe PLC Annual Report and Accounts 2024 TABLE OF CONTENTS Company Registration No. 09425113 Ferroglobe PLC Annual Report and Accounts Year ended 31 December 2024 1 TABLE OF CONTENTS Ferroglobe PLC Annual Report and Accounts 2024 Contents GLOSSARY AND DEFINITIONS 3 OFFICERS AND PROFESSIONALS ADVISERS 6 INTRODUCTION 7 CHAIRMAN’S LETTER TO SHAREHOLDERS 8 STRATEG

FERROGLOBE PLC (a public limited company having its registered office at The Scalpel, 18th Floor, 52 Lime Street, London, EC3M 7AF, United Kingdom and incorporated in England and Wales with company number 9425113)

 Exhibit 99.1 FERROGLOBE PLC (a public limited company having its registered office at The Scalpel, 18th Floor, 52 Lime Street, London, EC3M 7AF, United Kingdom and incorporated in England and Wales with company number 9425113) 22 May 2025 2025 Annual General Meeting of Shareholders of Ferroglobe Plc (“Ferroglobe” or the “Company”) Dear Shareholder I am pleased to invite you to attend Ferroglobe’s

Ferroglobe PLCUsing a black ink pen, mark your votes with an X as shown in this example. Please do not write outside the designated areas. Your vote matters – here’s how to vote!You may vote online or by phone instead of mailing this card.Votes submi

 Exhibit 99.4 Ferroglobe PLCUsing a black ink pen, mark your votes with an X as shown in this example. Please do not write outside the designated areas. Your vote matters – here’s how to vote!You may vote online or by phone instead of mailing this card.Votes submitted electronically must be received by 00:01, British Summer Time, on June 25, 2025.OnlineGo to www.envisionreports.com/GSM or scan the

Ferroglobe PLC Extracts from the 2024 Form 20-F To accompany the PLC Annual Report and Accounts 2024

TABLE OF CONTENTS  Exhibit 99.3 Ferroglobe PLC Extracts from the 2024 Form 20-F To accompany the PLC Annual Report and Accounts 2024 TABLE OF CONTENTS Page ITEM 3. KEY INFORMATION 1 D. Risk Factors 1 ITEM 4. INFORMATION ON THE COMPANY 35 A. History and Development of the Company . 35 B. Business Overview 38 C. Organizational Structure 63 D. Property, Plant and Equipment 63 ITEM 5. OPERATING AND FI

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 May 2025 Commission File Number: 001-37668

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 May 2025 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check m

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Ferroglobe PLC (the “Company”) on Form 20-F for the period ended December 31, 2024, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies, pursuant

CERTIFICATION

Exhibit 12.2 CERTIFICATION I, Beatriz García-Cos, certify that: 1.I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to t

Consent of Independent Registered Public Accounting Firm

Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the registration statements (No. 333-208911) on Form S-8 and (No. 333-258254) on Form F-3 of our reports dated April 25, 2025, with respect to the consolidated financial statements of Ferroglobe PLC and the effectiveness of internal control over financial reporting. /s/ KPMG Audito

Mine Safety and Health Administration Safety Data

Exhibit 16.1 Mine Safety and Health Administration Safety Data On July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Act”) was enacted. Section 1503 of the Act contains new reporting requirements regarding coal or other mine safety. We are committed to providing a safe workplace for all of our employees. We continue to engage proactively with federal and state agenc

CERTIFICATION

Exhibit 12.1 CERTIFICATION I, Marco Levi, certify that: 1.I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the perio

FERROGLOBE PLC INSIDER TRADING POLICY

Exhibit 11.1 Adopted by the Board of Directors on 17 January 2018 FERROGLOBE PLC INSIDER TRADING POLICY I. Introduction This Insider Trading Policy explains your responsibilities as a director, officer or employee of Ferroglobe PLC or any of its subsidiaries in relation to trading in Ferroglobe’s shares or other debt or equity securities. This Policy may also apply to consultants and contractors,

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 15.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference into (a) Registration Statement No. 333-208911 on Form S-8, and (b) Registration Statement No. 333-258254 on Form F-3, of our report dated May 1, 2023 relating to the consolidated financial statements of Ferroglobe PLC, appearing in this Annual Report on Form 20-F of Ferroglobe PLC fo

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

Exhibit 2.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of March 26, 2025, the ordinary shares of Ferroglobe PLC (“Ordinary Shares”) constitute the only class of securities it has registered under Section 12 of the Securities Exchange Act of 1934, as amended. Description of Ordinary Shares The following description is a sum

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) or (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

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 April 2025 Commission File Number: 001-3766

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 April 2025 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check

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 February 2025 Commission File Number: 001-3

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 February 2025 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by ch

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Ferroglobe PLC (Exact name of the registrant as specified in its charter)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT Ferroglobe PLC (Exact name of the registrant as specified in its charter) England and Wales 001-37668 (State or other jurisdiction of incorporation or organization) (Commission File Number) 13 Chesterfield Street London W1J 5JN United Kingdom (Address of principal executive office) (Zip co

Payee Name

Exhibit 99.1 Government-Level Disclosure1 Reporting Entity Name: Ferroglobe PLC For the Period: 1 January 2023 to 31 December 2023 Reporting Currency: U.S. Dollar Other Subsidiaries Included: Quebec Silicon Limited Partnership, Ferroglobe RAMSA Mining, S.A, Ferroglobe Cuarzos Industriales Mining, S.A.U., Thaba Chueu Mining (Pty.), Ltd., Silicon Smelters (Pty.), Ltd., Ferroglobe U.S.A Metallurgical

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 November 2024 Commission File Number: 001-3

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 November 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by ch

GSM / Ferroglobe PLC / Grupo Villar Mir, S.A.U. - AMENDMENT NO. 6 Passive Investment

SC 13G/A 1 sc13g-a.htm AMENDMENT NO. 6 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 6)* Ferroglobe PLC (Name of Issuer) Ordinary Shares (Title of Class of Securities) G33856 108 (CUSIP Number) September 30, 2024 (Date of Event which Requires Filing of this Statement) Check the appropriate box to design

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 2024 Commission File Number: 001-376

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 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by chec

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 June, 2024 Commission File Number: 001-37668 FERROGLOBE PLC

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 June, 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom +44 (0)750 130 8322 (Address of Principal Executive Office) Indicate by ch

Ferroglobe PLC Extracts from the 2023 Form 20-F To accompany the PLC Annual Report and Accounts 2023

Exhibit 99.3 Ferroglobe PLC Extracts from the 2023 Form 20-F To accompany the PLC Annual Report and Accounts 2023 Page ITEM 3. KEY INFORMATION 1 D. Risk Factors 1 ITEM 4. INFORMATION ON THE COMPANY 28 A.    History and Deveelpment of the Company 28 B.    Business Overview 30 C.    Organisational Structure 53 D.    Property, Plant and Equipment 53 ITEM 5. OPERATING AND FINANCIAL REVIEW AND PROSPECT

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 May 2024 Commission File Number: 001-37668

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 May 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check m

Proxy Solicited by Board of Directors for Annual Meeting – June 18, 2024 The undersigned hereby appoints the Company’s Executive Chairman or Company Secretary, each individually and each with powers of substitution, as proxies for the undersigned to

1UPX For Against Abstain For Against Abstain For Against Abstain Ferroglobe PLC Using a black ink pen, mark your votes with an X as shown in this example.

FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 9425113)

Exhibit 99.1 FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 9425113) 20 May 2024 2024 Annual General Meeting of Shareholders of Ferroglobe Plc (“Ferroglobe” or the “Company”) Dear Shareholder I am pleased to invite you to attend Ferroglobe’s annual general meeting of

Ferroglobe PLC Annual Report and Accounts 2023 Company Registration No. 09425113 Ferroglobe PLC Annual Report and Accounts Year ended 31 December 2023 Ferroglobe PLC Annual Report and Accounts 2023

Exhibit 99.2 Ferroglobe PLC Annual Report and Accounts 2023 Company Registration No. 09425113 Ferroglobe PLC Annual Report and Accounts Year ended 31 December 2023 Ferroglobe PLC Annual Report and Accounts 2023 Contents Page No. Glossary and definitions 2 Officers and professional advisers 5 Introduction 6 Chairman’s letter to shareholders 7 Strategic report (including section 172 statement) 9 Dir

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 May 2024 Commission File Number: 001-37668

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 May 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check m

FERROGLOBE PLC Clawback Policy

Exhibit 97.1 FERROGLOBE PLC Clawback Policy The Board of Directors (the “Board”) of Ferroglobe plc (the “Company”) believes that it is in the best interests of the Company and its shareholders to adopt this Clawback Policy (the “Policy”), which provides for the recovery of certain incentive compensation in the event of an Accounting Restatement (as defined below). This Policy is designed to comply

Mine Safety and Health Administration Safety Data

Exhibit 16.1 Mine Safety and Health Administration Safety Data On July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Act”) was enacted. Section 1503 of the Act contains new reporting requirements regarding coal or other mine safety. We are committed to providing a safe workplace for all of our employees. We continue to engage proactively with federal and state agenc

DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934

Exhibit 2.1 DESCRIPTION OF THE REGISTRANT’S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of April 26, 2023, the ordinary shares of Ferroglobe PLC (“Ordinary Shares”) constitute the only class of securities it has registered under Section 12 of the Securities Exchange Act of 1934, as amended. Description of Ordinary Shares The following description is a sum

Consent of Independent Registered Public Accounting Firm

Exhibit 15.1 Consent of Independent Registered Public Accounting Firm We consent to the incorporation by reference in the registration statements (No. 333-208911) on Form S-8 and (Nos. 333-259445, 333-258254, and 333-255973) on Form F-3 of our reports dated May 13, 2024, with respect to the consolidated financial statements of Ferroglobe PLC and the effectiveness of internal control over financial

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Ferroglobe PLC (the “Company”) on Form 20-F for the period ended December 31, 2023, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies, pursuant

May 13, 2024

Exhibit 15.3 May 13, 2024 Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549-7561 Dear Sirs/Madams: We have read Item 16F of Ferroglobe PLC´s included within Form 20-F dated May 13, 2024, and agree with the statements made in relation to Deloitte S.L. Yours truly, /s/ Deloitte, S.L. Madrid, Spain

CERTIFICATION

Exhibit 12.1 CERTIFICATION I, Marco Levi, certify that: 1.I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the perio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) or (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

CERTIFICATION

Exhibit 12.2 CERTIFICATION I, Beatriz García-Cos, certify that: 1.I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2.Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to t

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 15.2 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference into (a) Registration Statement No. 333-208911 on Form S-8, (b) Registration Statement No. 333-259445 on Form F-3, (c) Registration Statement No. 333-258254 on Form F-3 and (d) Registration Statement No. 333-255973 on Form F-3, of our report dated May 1, 2023 relating to the consolida

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 May, 2024 Commission File Number: 001-37668

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 May, 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING Commission File Number: 001-37668 CUSIP Number: G33856108

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 12b-25 NOTIFICATION OF LATE FILING Commission File Number: 001-37668 CUSIP Number: G33856108 (Check one): ☐ Form 10-K ☒Form 20-F ☐ Form 11-K ☐ Form 10-Q ☐ Form 10-D ☐ Form N-CEN ☐ Form N-CSR For Period Ended: December 31, 2023 ☐Transition Report on Form 10-K ☐Transition Report on Form 20-F ☐Transition Report on Form 11-K

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 March, 2024 Commission File Number: 001-376

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 March, 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by chec

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 March, 2024 Commission File Number: 001-376

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 March, 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by chec

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 March, 2024 Commission File Number: 001-376

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 March, 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by chec

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 February 2024 Commission File Number: 001-3

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 February 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by ch

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 February, 2024 Commission File Number: 001-

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 February, 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by c

GSM / Ferroglobe PLC / Wolf Hill Capital Management, LP - SC 13G/A Passive Investment

SC 13G/A UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 1)* FERROGLOBE PLC (Name of Issuer) Ordinary Shares (nominal value of $0.01) (Title of Class of Securities) G33856108 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the

GSM / Ferroglobe PLC / Grupo Villar Mir, S.A.U. - AMENDMENT NO. 5 Passive Investment

SC 13G/A 1 sc13g-a.htm AMENDMENT NO. 5 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 5)* Ferroglobe PLC (Name of Issuer) Ordinary Shares (Title of Class of Securities) G33856 108 (CUSIP Number) December 31, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designa

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 February, 2024 Commission File Number: 001-

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 February, 2024 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by c

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 November 2023 Commission File Number: 001-3

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 November 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by ch

VIA EDGAR

1 November 2, 2023 VIA EDGAR Division of Corporation Finance United States Securities and Exchange Commission 100 F Street, N.

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 October 2023 Commission File Number: 001-37

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 October 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by che

VIA EDGAR

September 21, 2023 VIA EDGAR Division of Corporation Finance United States Securities and Exchange Commission 100 F Street, N.

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 2023 Commission File Number: 001-376

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 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by chec

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 2023 Commission File Number: 001-37668

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 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check

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 June, 2023 Commission File Number: 001-37668 FERROGLOBE PLC

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 June, 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom +44 (0)750 130 8322 (Address of Principal Executive Office) Indicate by ch

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 June 2023 Commission File Number: 001-37668

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 June 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check

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 June 2023 Commission File Number: 001-37668

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 June 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check

FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 9425113)

Exhibit 99.1 FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 9425113) 30 May 2023 Dear Shareholder 2023 Annual General Meeting of Shareholders of Ferroglobe Plc (“Ferroglobe” or the “Company”) I am pleased to invite you to attend Ferroglobe’s annual general meeting of

Proxy Solicited by Board of Directors for Annual Meeting – June 27, 2023 The undersigned hereby appoints the Company’s Executive Chairman or Company Secretary, each individually and each with powers of substitution, as proxies for the undersigned to

Exhibit 99.4 1UPX For Against Abstain For Against Abstain For Against Abstain Ferroglobe PLC Using a black ink pen, mark your votes with an X as shown in this example. Please do not write outside the designated areas. 03TV0C + + A Proposals — The Board recommends a vote FOR proposals 1 - 15 Please sign exactly as name(s) appears hereon. Joint owners should each sign. When signing as attorney, exec

Ferroglobe PLC Extracts from the 2022 Form 20-F To accompany the PLC Annual Report and Accounts 2022

Exhibit 99.3 Ferroglobe PLC Extracts from the 2022 Form 20-F To accompany the PLC Annual Report and Accounts 2022 Page ITEM 3. KEY INFORMATION 1 D. Risk Factors 1 ITEM 4. INFORMATION ON THE COMPANY 28 A. History and Deveelpment of the Company 28 B. Business Overview 30 C. Organisational Structure 54 D. Property, Plant and Equipment 54 ITEM 5. OPERATING AND FINANCIAL REVIEW AND PROSPECTS 54 A. Oper

Ferroglobe PLC Annual Report and Accounts 2022 Company Registration No. 09425113 Ferroglobe PLC Annual Report and Accounts Year ended 31 December 2022 Ferroglobe PLC Annual Report and Accounts 2022

Exhibit 99.2 Ferroglobe PLC Annual Report and Accounts 2022 Company Registration No. 09425113 Ferroglobe PLC Annual Report and Accounts Year ended 31 December 2022 Ferroglobe PLC Annual Report and Accounts 2022 Contents Page No. Glossary and definitions 3 Officers and professional advisers 5 Introduction 6 Chairman’s letter to shareholders 7 Strategic report (including section 172 statement) 9 Dir

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 June 2023 Commission File Number: 001-37668

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 June 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check

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 May 2023 Commission File Number: 001-37668

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 May 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check m

JOINT FILING AGREEMENT May 24, 2023

EX-99.1 Exhibit 99.1 JOINT FILING AGREEMENT May 24, 2023 Pursuant to and in accordance with the Securities Exchange Act of 1934, as amended (the “Act”), and the rules and regulations thereunder, each party hereto hereby agrees to the joint filing, on behalf of each of them, of any filing required by such party under Section 13 or Section 16 of the Act or any rule or regulation thereunder (includin

GSM / Ferroglobe Plc / Wolf Hill Capital Management, LP - SC 13G Passive Investment

SC 13G UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* FERROGLOBE PLC (Name of Issuer) Ordinary Shares (nominal value of $0.01) (Title of Class of Securities) G33856108 (CUSIP Number) March 24, 2023 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule

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 May 2023 Commission File Number: 001-37668

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 May 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by check m

Mine Safety and Health Administration Safety Data

Exhibit 16.1 Mine Safety and Health Administration Safety Data On July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the “Act”) was enacted. Section 1503 of the Act contains new reporting requirements regarding coal or other mine safety. We are committed to providing a safe workplace for all of our employees. We continue to engage proactively with federal and state agenc

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) or (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

Indenture governing the $345,058 thousand exchanged old notes of 9⅜% for new 9⅜% senior secured notes due 2025 issued by the UK Issuer and Globe dated as of July 29, 2021, among Ferroglobe Finance Company, PLC, a public limited company incorporated under the laws of England and Wales (the “UK Issuer”), and Globe Specialty Metals, Inc., a corporation incorporated under the laws of the State of Delaware (the “US Co-Issuer” and, together with the UK Issuer, the “Issuers”), Ferroglobe PLC, a public limited company incorporated under the laws of England and Wales as the parent guarantor (the “Parent”), the Guarantors (as defined herein) from time to time party hereto, and GLAS Trustees Limited, as trustee (in such capacity, the “Trustee”), GLAS Trust Corporation Limited as security agent (in such capacity, the “Security Agent”), Global Loan Agency Services Limited as paying agent (in such capacity, the “Paying Agent”) and GLAS Americas LLC as registrar (in such capacity, the “Registrar”) and transfer agent (in such capacity, the “Transfer Agent”)

Exhibit 4.4 FERROGLOBE FINANCE COMPANY, PLC and Globe Specialty Metals, Inc. as Issuers Ferroglobe PLC as Parent Guarantor and the Guarantors party hereto 9.375% Senior Secured Notes due 2025 INDENTURE Dated as of July 29, 2021 GLAS Trustees Limited, as Trustee Global Loan Agency Services Limited, as Paying Agent GLAS Americas LLC as Registrar and Transfer Agent GLAS Trust Corporation Limited, as

Consent of Deloitte, S.L., Independent Registered Public Accounting Firm for Ferroglobe PLC

Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference into (a) Registration Statement No. 333-208911 on Form S-8, (b) Registration Statement No. 333-259445 on Form F-3, (c) Registration Statement No. 333-258254 on Form F-3 and (d) Registration Statement No. 333-255973 on Form F-3, of our reports dated May 1, 2023 relating to the consolid

Certification of the Principal Executive Officers and Principal Financial Officer Pursuant to 18 U.S.C. 1350, as adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Ferroglobe PLC (the “Company”) on Form 20-F for the period ended December 31, 2022, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies, pursuant

Certification of the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 CERTIFICATION I, Beatriz García-Cos, certify that: 1. I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to

Amendment No. 3, to the amended and restated shareholder agreement

Exhibit 3.2 Execution version AMENDMENT NO.3 TO THE AMENDED AND RESTATED SHAREHOLDER AGREEMENT This AMENDMENT NO.3 TO THE AMENDED AND RESTATED SHAREHOLDER AGREEMENT is entered into as of this 29th day of July 2021 (this “Amendment”), between Grupo Villar Mir, S.A.U., a public limited company (sociedad anónima) incorporated under the laws of Spain (“Grupo VM”), and Ferroglobe PLC, a public limited

Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 CERTIFICATION I, Marco Levi, certify that: 1. I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

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 February 2023 Commission File Number: 001-3

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 February 2023 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 13 Chesterfield Street, London W1J 5JN, United Kingdom (Address of Principal Executive Office) Indicate by ch

GSM / Ferroglobe PLC / Grupo Villar Mir, S.A.U. - AMENDMENT NO. 4 Passive Investment

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 4)* Ferroglobe PLC (Name of Issuer) Ordinary Shares (Title of Class of Securities) G33856 108 (CUSIP Number) December 31, 2022 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Sche

GSM / Ferroglobe PLC / Rubric Capital Management LP - SC 13G/A Passive Investment

SC 13G/A 1 tm235947d10sc13ga.htm SC 13G/A SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 1)* Ferroglobe PLC (Name of Issuer) Ordinary Shares, $0.01 nominal value per share (Title of Class of Securities) G33856108 (CUSIP Number) December 31, 2022 (Date of event which requires filing of this statement) Check the appro

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 November 2022 Commission File Number: 001-3

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 November 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the re

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 October, 2022 Commission File Number: 001-3

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 October, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the re

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 September, 2022 Commission File Number: 001

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 September, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the

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 Quarter ending June 30, 2022 Commission File Number:

6-K 1 tmb-20220630x6k.htm 6-K 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 Quarter ending June 30, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Ind

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, 2022 Commission File Number: 001-3766

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, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the regis

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, 2022 Commission File Number: 001-3766

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, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the regis

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, 2022 Commission File Number: 001-37668 FERROGLOBE P

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, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

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, 2022 Commission File Number: 001-37668 FERROGLOBE P

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, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

1UPX For Against Abstain For Against Abstain For Against Abstain Ferroglobe PLC Using a b black ink pen, mark your votes with an X X as shown in this example. Please do not write outside the designated areas. 03NLAD + + Proposals — The Board recommen

Exhibit 99.4 1UPX For Against Abstain For Against Abstain For Against Abstain Ferroglobe PLC Using a b black ink pen, mark your votes with an X X as shown in this example. Please do not write outside the designated areas. 03NLAD + + Proposals ? The Board recommends a vote FOR proposals 1 - 17 A Please sign exactly as name(s) appears hereon. Joint owners should each sign. When signing as attorney,

Ferroglobe PLC Extracts from the 2021 Form 20-F To accompany the PLC Annual Report and Accounts 2021

Exhibit 99.3 Ferroglobe PLC Extracts from the 2021 Form 20-F To accompany the PLC Annual Report and Accounts 2021 Page ITEM 3. KEY INFORMATION 2 D.????Risk Factors 2 ITEM 4. INFORMATION ON THE COMPANY 29 A.???History and Deveelpment of the Company 29 B.????Business Overview 31 C.????Organisational Structure 56 D.????Property, Plant and Equipment 56 ITEM 5. OPERATING AND FINANCIAL REVIEW AND PROSPE

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 2022 Commission File Number: 001-37668 FERROGLOBE PL

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 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or wi

Ferroglobe PLC Annual Report and Accounts 2021 Company Registration No. 09425113 Ferroglobe PLC Annual Report and Financial Statements Year ended 31 December 2021 Ferroglobe PLC Annual report and financial statements 2021

Exhibit 99.2 Ferroglobe PLC Annual Report and Accounts 2021 Company Registration No. 09425113 Ferroglobe PLC Annual Report and Financial Statements Year ended 31 December 2021 Ferroglobe PLC Annual report and financial statements 2021 Contents Page No. Glossary and definitions 2 Officers and professional advisers 5 Introduction 6 Chairman?s letter to shareholders 7 Strategic report (including sect

FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 9425113)

Exhibit 99.1 FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 9425113) 3 June 2022 Dear Shareholder 2022 Annual General Meeting of Shareholders of Ferroglobe Plc (?Ferroglobe? or the ?Company?) I am pleased to invite you to attend Ferroglobe?s annual general meeting of

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, 2022 Commission File Number: 001-37668 FERROGLOBE P

6-K 1 tmb-20220601x6k.htm 6-K 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, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whe

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 May, 2022 Commission File Number: 001-37668 FERROGLOBE PL

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 May, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

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 Quarter ending March 31, 2022 Commission File Number: 001-37668 FE

6-K 1 tmb-20220331x6k.htm 6-K 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 Quarter ending March 31, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by chec

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 Quarter ending March 31, 2022 Commission File Number: 001-37668 FE

6-K 1 tmb-20220331x6k.htm 6-K 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 Quarter ending March 31, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by chec

Indenture governing the $60,000,000 aggregate principal amount of new 9.0% senior secured notes due 2025 dated as of May 17, 2021, among Ferroglobe Finance Company, PLC, a public limited company incorporated under the laws of England and Wales (the “Issuer”), Ferroglobe PLC, a public limited company incorporated under the laws of England and Wales as the parent guarantor (the “Parent”), the Guarantors (as defined herein) from time to time party hereto, and GLAS Trustees Limited, as trustee (in such capacity, the “Trustee”), GLAS Trust Corporation Limited as security agent (in such capacity, the “Security Agent”), Global Loan Agency Services Limited as paying agent (in such capacity, the “Paying Agent”) and GLAS Americas LLC as registrar (in such capacity, the “Registrar”) and transfer agent (in such capacity, the “Transfer Agent”)

Exhibit 4.5 ? FERROGLOBE FINANCE COMPANY, PLC ? as Issuer ? Ferroglobe PLC ? as Parent Guarantor ? and the Guarantors party hereto ? 9.0% Senior Secured Notes due 2025 ? ? ? INDENTURE ? Dated as of May 17, 2021 ? GLAS Trustees Limited, as Trustee ? Global Loan Agency Services Limited, as Paying Agent ? GLAS Americas LLC as Registrar and Transfer Agent ? GLAS Trust Corporation Limited, as Security

Consent of Deloitte, S.L., Independent Registered Public Accounting Firm for Ferroglobe PLC

EX-15.1 10 tmb-20211231xex15d1.htm EX-15.1 Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference into (a) Registration Statement No. 333-208911 on Form S-8, (b) Registration Statement No. 333-259445 on Form F-3, (c) Registration Statement No. 333-258254 on Form F-3 and (d) Registration Statement No. 333-255973 on Form F-3, of our reports

Amendment No. 3, to the amended and restated shareholder agreement

Exhibit 3.2 ? Execution version ? AMENDMENT NO.3 TO THE AMENDED AND RESTATED SHAREHOLDER AGREEMENT ? This AMENDMENT NO.3 TO THE AMENDED AND RESTATED SHAREHOLDER AGREEMENT is entered into as of this 29th day of July 2021 (this ?Amendment?), between Grupo Villar Mir, S.A.U., a public limited company (sociedad an?nima) incorporated under the laws of Spain (?Grupo VM?), and Ferroglobe PLC, a public li

Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 CERTIFICATION I, Marco Levi, certify that: 1. I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

Certification of the Principal Executive Officers and Principal Financial Officer Pursuant to 18 U.S.C. 1350, as adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 ? In connection with the annual report of Ferroglobe PLC (the ?Company?) on Form 20-F for the period ended December 31, 2021, as filed with the U.S. Securities and Exchange Commission on the date hereof (the ?Report?), each of the undersigned hereby certifies, pursuan

Lon agreement of €34.5 million dated, March 3, 2022, between Grupo FerroAtlántica, S.A.U., Grupo FerroAtlántica de Servicios, S.L.U. and the Sociedad Estatal de Participaciones Industriales (“SEPI”), a Spanish state-owned industrial holding company affiliated with the Ministry of Finance and Administration

? Exhibit 4.6 ? ANNEX I FINANCING AGREEMENT ? made by and between ? GRUPO FERROATL?NTICA, S.A.U As Applicant, Borrower, Beneficiary, and parent company of the Beneficiary Group ? GRUPO FERROATL?NTICA DE SERVICIOS, S.L.U. As Beneficiary ? FERROGLOBE PLC FERROGLOBE HOLDING COMPANY LTD FERROGLOBE FINANCE COMPANY PLC as Guarantors ? ROCAS, ARCILLAS Y MINERALES S.A. CUARZOS INDUSTRIALES, S.A.U. They ap

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F

Table of Contents ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.

Certification of the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 CERTIFICATION I, Beatriz García-Cos, certify that: 1. I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to

Indenture governing the $345,058 thousand exchanged old notes of 9⅜% for new 9⅜% senior secured notes due 2025 issued by the UK Issuer and Globe dated as of July 29, 2021, among Ferroglobe Finance Company, PLC, a public limited company incorporated under the laws of England and Wales (the “UK Issuer”), and Globe Specialty Metals, Inc., a corporation incorporated under the laws of the State of Delaware (the “US Co-Issuer” and, together with the UK Issuer, the “Issuers”), Ferroglobe PLC, a public limited company incorporated under the laws of England and Wales as the parent guarantor (the “Parent”), the Guarantors (as defined herein) from time to time party hereto, and GLAS Trustees Limited, as trustee (in such capacity, the “Trustee”), GLAS Trust Corporation Limited as security agent (in such capacity, the “Security Agent”), Global Loan Agency Services Limited as paying agent (in such capacity, the “Paying Agent”) and GLAS Americas LLC as registrar (in such capacity, the “Registrar”) and transfer agent (in such capacity, the “Transfer Agent”)

Exhibit 4.4 ? FERROGLOBE FINANCE COMPANY, PLC ? and ? Globe Specialty Metals, Inc. ? as Issuers ? Ferroglobe PLC ? as Parent Guarantor ? and the Guarantors party hereto ? 9.375% Senior Secured Notes due 2025 INDENTURE ? Dated as of July 29, 2021 ? GLAS Trustees Limited, as Trustee ? Global Loan Agency Services Limited, as Paying Agent ? GLAS Americas LLC as Registrar and Transfer Agent ? GLAS Trus

Mine Safety and Health Administration Safety Data

Exhibit 16.1 Mine Safety and Health Administration Safety Data On July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the ?Act?) was enacted. Section 1503 of the Act contains new reporting requirements regarding coal or other mine safety. We are committed to providing a safe workplace for all of our employees. We continue to engage proactively with federal and state agenc

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 April, 2022 Commission File Number: 001-37668 FERROGLOBE

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 April, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files o

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 December, 2021 Commission File Number: 001-37668 FERROGLO

6-K 1 tmb-20220302x6k.htm 6-K 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 December, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark

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 February, 2022 Commission File Number: 001-37668 FERROGLO

6-K 1 tmb-20220215x6k.htm 6-K 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 February, 2022 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark

GSM / Ferroglobe PLC / Rubric Capital Management LP - SC 13G Passive Investment

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. )* Ferroglobe PLC (Name of Issuer) Ordinary Shares, $0.01 nominal value per share (Title of Class of Securities) G33856108 (CUSIP Number) December 31, 2021 (Date of event which requires filing of this statement) Check the appropriate box to designate the rule pursuant to

GSM / Ferroglobe PLC / Grupo Villar Mir, S.A.U. - AMENDMENT NO. 3 Passive Investment

SC 13G/A 1 sc13ga.htm AMENDMENT NO. 3 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G Under the Securities Exchange Act of 1934 (Amendment No. 3)* Ferroglobe PLC (Name of Issuer) Ordinary Shares (Title of Class of Securities) G33856 108 (CUSIP Number) December 31, 2021 (Date of Event which Requires Filing of this Statement) Check the appropriate box to designat

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 November, 2021 Commission File Number: 001-37668 FERROGLO

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 November, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant file

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 September, 2021 Commission File Number: 001-37668 FERROGL

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 September, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant fil

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 October, 2021 Commission File Number: 001-3

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 October, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the regi

Equity Distribution Agreement, dated October 6, 2021, by and among Ferroglobe PLC; B. Riley Securities, Inc. and Cantor Fitzgerald & Co.

Exhibit 1.1 FERROGLOBE PLC Ordinary Shares Having an Aggregate Offering Price of up to $100,000,000 Equity Distribution Agreement October 6, 2021 B. Riley Securities, Inc. 299 Park Avenue, 21st Floor New York, NY 10171 Cantor Fitzgerald & Co. 499 Park Avenue New York, NY 10022 Ladies and Gentlemen: Ferroglobe PLC, a public limited company organized under the laws of England and Wales (the ?Company

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 October, 2021 Commission File Number: 001-37668 FERROGLOB

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 October, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files o

Ferroglobe PLC and Subsidiaries Unaudited Interim Condensed Consolidated Financial Statements as of June 30, 2021 and December 31, 2020 and for the three and six months ended June 30, 2021 and June 30, 2020. FERROGLOBE PLC AND SUBSIDIARIES UNAUDITED

Exhibit 99.2 Ferroglobe PLC and Subsidiaries Unaudited Interim Condensed Consolidated Financial Statements as of June 30, 2021 and December 31, 2020 and for the three and six months ended June 30, 2021 and June 30, 2020. FERROGLOBE PLC AND SUBSIDIARIES UNAUDITED INTERIM CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION AS OF JUNE 30, 2021 AND DECEMBER 31, 2020 Thousands of US dollars June 30

Ordinary Shares Having an Aggregate Offering Price of up to FERROGLOBE PLC

Filed pursuant to Rule 424(b)(2) Registration No.: 333-255973 PROSPECTUS SUPPLEMENT (To Prospectus Dated June 11, 2021) Ordinary Shares Having an Aggregate Offering Price of up to $100,000,000 FERROGLOBE PLC We have entered into an equity distribution agreement (the ?Equity Distribution Agreement?) with B. Riley Securities, Inc. and Cantor Fitzgerald & Co. relating to the ordinary shares, par valu

Ferroglobe PLC and Subsidiaries Unaudited Interim Condensed Consolidated Financial Statements as of March 31, 2021 and December 31, 2020 and for the three months ended March 31, 2021 and March 31, 2020. FERROGLOBE PLC AND SUBSIDIARIES UNAUDITED INTER

Exhibit 99.1 Ferroglobe PLC and Subsidiaries Unaudited Interim Condensed Consolidated Financial Statements as of March 31, 2021 and December 31, 2020 and for the three months ended March 31, 2021 and March 31, 2020. FERROGLOBE PLC AND SUBSIDIARIES UNAUDITED INTERIM CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL POSITION AS OF MARCH 31, 2021 AND DECEMBER 31, 2020 Thousands of US dollars March 31, D

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 September, 2021 Commission File Number: 001-37668 FERROGL

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 September, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant fil

FERROGLOBE PLC 91,708,179 Ordinary Shares

PROSPECTUS Filed Pursuant to Rule 424(b)(7) Registration No. 333-259445 FERROGLOBE PLC 91,708,179 Ordinary Shares This prospectus relates to the resale, from time to time, by Grupo Villar Mir S.A.U. (the ?Selling Shareholder?) or its pledgees, donees, transferees of an aggregate of 91,708,179 ordinary shares, par value $0.01 per share, of Ferroglobe PLC. We will not receive any proceeds from the s

FERROGLOBE PLC 13 Chesterfield Street London W1J 5JN, United Kingdom

FERROGLOBE PLC 13 Chesterfield Street London W1J 5JN, United Kingdom September 20, 2021 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

As filed with the Securities and Exchange Commission on September 10, 2021

As filed with the Securities and Exchange Commission on September 10, 2021 Registration No.

our report on Form 6-K, furnished to the SEC on August 23, 2021;

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, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files

FERROGLOBE PLC 8,913,872 Ordinary Shares

PROSPECTUS Filed Pursuant to Rule 424(b)(7) Registration No. 333-258254 FERROGLOBE PLC 8,913,872 Ordinary Shares This prospectus relates to the resale, from time to time, by the selling shareholders identified herein or their pledgees, donees, transferees of an aggregate of 8,913,872 ordinary shares, par value $0.01 per share, of Ferroglobe PLC. We will not receive any proceeds from the sale of ou

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, 2021 Commission File Number: 001-37668 FERROGLOBE

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, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files

As filed with the Securities and Exchange Commission on August 10, 2021

As filed with the Securities and Exchange Commission on August 10, 2021 Registration No.

FERROGLOBE PLC 13 Chesterfield Street London W1J 5JN, United Kingdom

FERROGLOBE PLC 13 Chesterfield Street London W1J 5JN, United Kingdom August 10, 2021 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

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, 2021 Commission File Number: 001-37668 FERROGLOBE P

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, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

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, 2021 Commission File Number: 001-37668 FERROGLOBE P

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, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

Powers of Attorney (included on signature page to our registration statement on Form F-3 filed on July 29, 2021).).

As filed with the Securities and Exchange Commission on July 29, 2021 Registration No.

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, 2021 Commission File Number: 001-37668 FERROGLOBE P

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, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

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, 2021 Commission File Number: 001-37668 FERROGLOBE P

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, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or w

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 P

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) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) ? Indicate by check mark whether the registrant file

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 P

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) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

INTERCREDITOR AGREEMENT GLAS TRUSTEES LIMITED as Original Super Senior Note Trustee FERROGLOBE PLC as Parent GLAS TRUST CORPORATION LIMITED acting as Security Agent and others TABLE OF CONTENTS

Exhibit 99.3 Weil, Gotshal & Manges (London) LLP 110 Fetter Lane London EC4A 1AY +44 20 7903 1000 main tel +44 20 7903 0990 main fax weil.com Execution version 17 May 2021 INTERCREDITOR AGREEMENT between GLAS TRUSTEES LIMITED as Original Super Senior Note Trustee FERROGLOBE PLC as Parent GLAS TRUST CORPORATION LIMITED acting as Security Agent and others TABLE OF CONTENTS Page No. 1 DEFINITIONS AND

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 P

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) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or w

-2-

Exhibit 99.1 LAUNCH OF (A) OFFER TO EXCHANGE THE 9?% SENIOR NOTES DUE 2022 FOR A COMBINATION OF NEW 9?% SENIOR SECURED NOTES DUE 2025 AND EQUITY FEE, (B) CONSENT SOLICITATION RELATING TO THE 9?% SENIOR NOTES DUE 2022 AND (C) OFFER TO SUBSCRIBE FOR ADDITIONAL 9.0% SENIOR SECURED NOTES DUE 2025 London, June 23, 2021 Exchange Offer and Consent Solicitation Ferroglobe PLC (the ?Parent?), Ferroglobe Fi

FERROGLOBE FINANCE COMPANY, PLC as Issuer Ferroglobe PLC as Parent Guarantor and the Guarantors party hereto 9.0% Senior Secured Notes due 2025 Dated as of May 17, 2021 GLAS Trustees Limited, as Trustee Global Loan Agency Services Limited, as Paying

Exhibit 99.2 Execution Version FERROGLOBE FINANCE COMPANY, PLC as Issuer Ferroglobe PLC as Parent Guarantor and the Guarantors party hereto 9.0% Senior Secured Notes due 2025 INDENTURE Dated as of May 17, 2021 GLAS Trustees Limited, as Trustee Global Loan Agency Services Limited, as Paying Agent GLAS Americas LLC as Registrar and Transfer Agent GLAS Trust Corporation Limited, as Security Agent TAB

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 P

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) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or w

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 P

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) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

8,918,618 Ordinary Shares FERROGLOBE PLC

Filed pursuant to Rule 424(b)(2) Registration No.: 333-255973 PROSPECTUS SUPPLEMENT (to Prospectus dated June 11, 2021) 8,918,618 Ordinary Shares FERROGLOBE PLC We are offering 7,803,791 ordinary shares to Rubric Capital Management LP (?Rubric?), on behalf of certain managed or submanaged funds and accounts and 1,114,827 ordinary shares to Grupo Villar Mir S.A.U. (?Grupo VM?). The gross proceeds t

As filed with the Securities and Exchange Commission on June 11, 2021

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on June 11, 2021 Registration No.

FERROGLOBE PLC 13 Chesterfield Street London W1J 5JN, United Kingdom

FERROGLOBE PLC 13 Chesterfield Street London W1J 5JN, United Kingdom June 11, 2021 VIA EDGAR Securities and Exchange Commission Division of Corporation Finance 100 F Street, N.

Ferroglobe PLC Extracts from the 2020 Form 20-F To accompany the PLC Annual Report and Accounts 2020

Exhibit 99.3 Ferroglobe PLC Extracts from the 2020 Form 20-F To accompany the PLC Annual Report and Accounts 2020 Page ITEM 3. KEY INFORMATION 1 D. Risk Factors 1 ITEM 4. INFORMATION ON THE COMPANY 30 A. History and Deveelpment of the Company 30 B. Business Overview 33 C. Organisational Structure 58 D. Property, Plant and Equipment 58 ITEM 5. OPERATING AND FINANCIAL REVIEW AND PROSPECTS 58 A. Oper

FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 9425113)

Exhibit 99.1 FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 9425113) 4 June 2021 Dear Shareholder 2021 Annual General Meeting of Shareholders of Ferroglobe Plc (?Ferroglobe? or the ?Company?) I am pleased to enclose the notice of Ferroglobe?s annual general meeting of

Ferroglobe PLC Annual Report and Accounts 2020 Company Registration No. 09425113 Ferroglobe PLC Annual Report and Financial Statements Year ended 31 December 2020 Ferroglobe PLC Annual report and financial statements 2020

Exhibit 99.2 Ferroglobe PLC Annual Report and Accounts 2020 Company Registration No. 09425113 Ferroglobe PLC Annual Report and Financial Statements Year ended 31 December 2020 Ferroglobe PLC Annual report and financial statements 2020 Contents Page No. Glossary and definitions 1 Officers and professional advisers 4 Introduction 5 Chairman?s letter to shareholders 6 Strategic report (including sect

Ferroglobe PLC Your vote matters – here’s how to vote! You may vote online or by phone instead of mailing this card. Votes submitted electronically must be received by 00:01, British Summer Time, on June 28, 2021. Online Go to www.envisionreports.com

Exhibit 99.4 Ferroglobe PLC Your vote matters ? here?s how to vote! You may vote online or by phone instead of mailing this card. Votes submitted electronically must be received by 00:01, British Summer Time, on June 28, 2021. Online Go to www.envisionreports.com/GSM or scan the QR code ? login details are located in the shaded bar below. Using a blackink pen, mark your votes with an X as shown in

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 P

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) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or w

our report on Form 6-K, furnished to the SEC on May 17, 2021;

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 May, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

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 May, 2021 Commission File Number: 001-37668 FERROGLOBE PL

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 May, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

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 May, 2021 Commission File Number: 001-37668 FERROGLOBE PL

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 May, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or

Form F-3 (File No. 333-255973)

As filed with the Securities and Exchange Commission on May 10, 2021 Registration No.

Certification of the Principal Executive Officers and Principal Financial Officer Pursuant to 18 U.S.C. 1350, as adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 ? In connection with the annual report of Ferroglobe PLC (the ?Company?) on Form 20-F for the period ended December 31, 2020, as filed with the U.S. Securities and Exchange Commission on the date hereof (the ?Report?), each of the undersigned hereby certifies, pursuan

Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 CERTIFICATION I, Marco Levi, certify that: 1. I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

Mine Safety and Health Administration Safety Data

Exhibit 16.1 Mine Safety and Health Administration Safety Data On July 21, 2010, the Dodd-Frank Wall Street Reform and Consumer Protection Act (the ?Act?) was enacted. Section 1503 of the Act contains new reporting requirements regarding coal or other mine safety. We are committed to providing a safe workplace for all of our employees. We continue to engage proactively with federal and state agenc

Certification of the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 CERTIFICATION I, Beatriz Garc?a-Cos, certify that: 1. I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to

our Annual Report on Form 20-F for the fiscal year ended December 31, 2020, filed with the SEC on April 30, 2021 (the “2020 Form 20-F”);

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ? ? REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) or (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ? ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) O

New Debt Backstop Letter

CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL.

Consent of Deloitte, S.L., Independent Registered Public Accounting Firm for Ferroglobe PLC

EX-15.1 10 gsm-20201231ex15198f735.htm EX-15.1 Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-208911 on Form S-8 of our reports dated April 30, 2021 relating to the consolidated financial statements of Ferroglobe PLC and the effectiveness of Ferroglobe PLC’s internal control over financial reporti

Description of securities (incorporated by reference to Exhibit 2.1 to the annual report on Form 20-F filed by the Company on April 30, 2021)

Exhibit 2.1 DESCRIPTION OF THE REGISTRANT?S SECURITIES REGISTERED PURSUANT TO SECTION 12 OF THE SECURITIES EXCHANGE ACT OF 1934 As of April 28, 2021, the ordinary shares of Ferroglobe PLC (?Ordinary Shares?) constitute the only class of securities it has registered under Section 12 of the Securities Exchange Act of 1934, as amended. Description of Ordinary Shares The following description is a sum

New Equity Backstop Letter

CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL.

LOCK-UP AGREEMENT dated 27 March 2021 GRUPO VILLAR MIR, S.A.U. THE TYRUS BACKSTOP PROVIDER THE TYRUS PLEDGEE FERROGLOBE PLC GLOBE SPECIALTY METALS, INC. THE GUARANTORS THE CONSENTING NOTEHOLDERS

CERTAIN IDENTIFIED INFORMATION HAS BEEN EXCLUDED FROM THE EXHIBIT BECAUSE IT IS BOTH NOT MATERIAL AND IS THE TYPE THAT THE REGISTRANT TREATS AS PRIVATE OR CONFIDENTIAL.

Current Report of Foreign Issuer - 6-K

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 April, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files o

Current Report of Foreign Issuer - 6-K

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 April, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files o

Current Report of Foreign Issuer - 6-K

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 April, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files o

Current Report of Foreign Issuer - 6-K

6-K 1 tmb-20210329x6k.htm 6-K 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 March, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark wh

Current Report of Foreign Issuer - 6-K

6-K 1 tmb-20210329x6k.htm 6-K 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 March, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark wh

Current Report of Foreign Issuer - 6-K

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 March, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files o

Current Report of Foreign Issuer - 6-K

6-K 1 tmb-20210301x6k.htm 6-K 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 March, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark wh

Current Report of Foreign Issuer - 6-K

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 March, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files o

Current Report of Foreign Issuer - 6-K

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 February, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant file

SIGNATURES

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G/A Under the Securities Exchange Act of 1934 (Amendment No. 3) Ferroglobe PLC (Name of Issuer) Ordinary Shares, nominal value $0.01 per share (Title of Class of Securities) G33856108 (CUSIP Number) December 31, 2020 (Date of Event Which Requires Filing of This Statement) Check the appropriate box to designate the rule pursuant t

Current Report of Foreign Issuer - 6-K

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 February, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files

Current Report of Foreign Issuer - 6-K

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 January, 2021 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files o

Current Report of Foreign Issuer - 6-K

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 December, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files

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 December, 2020 Commission File Number: 001-37668 FERROGLO

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 December, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant file

Current Report of Foreign Issuer - 6-K

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 December, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files

Current Report of Foreign Issuer - 6-K

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 November, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files

Current Report of Foreign Issuer - 6-K

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 November, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant file

Current Report of Foreign Issuer - 6-K

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, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files

Current Report of Foreign Issuer - 6-K

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, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) ? 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files

Current Report of Foreign Issuer - 6-K

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, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Registered Office) Indicate by check mark whether the registrant files or will file

Current Report of Foreign Issuer - 6-K

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, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or w

Current Report of Foreign Issuer - 6-K

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, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 2nd Floor West Wing, Lansdowne House 57 Berkeley Square London, W1J 6ER (Address of Principal Executive Office) Indicate by ch

Current Report of Foreign Issuer - 6-K

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, 2020 Commission File Number: 001-37668 FERROGLOBE PLC (Name of Registrant) 5 Fleet Place London, EC4M7RD (Address of Principal Executive Office) Indicate by check mark whether the registrant files or w

Ferroglobe PLC Extracts from the 2019 Form 20-F To accompany the Ferroglobe PLC Annual Report and Accounts 2019

Table of Contents Exhibit 99.3 Ferroglobe PLC Extracts from the 2019 Form 20-F To accompany the Ferroglobe PLC Annual Report and Accounts 2019 Table of Contents Page ITEM 3 KEY INFORMATION 1 D. Risk Factors 1 ITEM 4. INFORMATION ON THE COMPANY 33 A. History and Development of the Company 33 B. Business Overview 35 C. Organisational Structure 61 D. Property, Plant and Equipment 61 ITEM 5. OPERATING

Current Report of Foreign Issuer - 6-K

QuickLinks - Click here to rapidly navigate through this document SECURITIES AND EXCHANGE COMMISSION Washington, D.

Ferroglobe PLC Annual Report and Accounts 2019

Table of Contents Exhibit 99.2 Ferroglobe PLC Annual Report and Accounts 2019 Table of Contents Company Registration No. 09425113 Ferroglobe PLC Annual Report and Financial Statements Year ended 31 December 2019 Table of Contents Ferroglobe PLC Annual report and financial statements 2019 Contents Page No. Glossary and definitions 1 Officers and professional advisers 5 Introduction 6 Chairman's let

FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 09425113)

QuickLinks - Click here to rapidly navigate through this document Exhibit 99.1 FERROGLOBE PLC (a public limited company having its registered office at 5 Fleet Place, London, EC4M 7RD, United Kingdom and incorporated in England and Wales with company number 09425113) 5 June 2020 Dear Shareholder 2020 Annual General Meeting of Shareholders of Ferroglobe Plc ("Ferroglobe" or the "Company") I am plea

Ferroglobe PLC Your vote matters – here’s how to vote! You may vote online or by phone instead of mailing this card. Votes submitted electronically must be received by 09:01 a.m., Eastern Time, on June 28, 2020. Online Go to www.envisionreports.com/G

Ferroglobe PLC Your vote matters – here’s how to vote! You may vote online or by phone instead of mailing this card.

Contract for the termination of the Joint Venture Agreement and agreements derived from it, dated as of July 11, 2019, among Grupo Ferroatlántica, S.A.U., Silicio Ferrosolar, S.L.U., Ferroatlántica, S.A.U., Ferroatlántica Participaciones, S.L.U., Aurinka Photovoltaic Group, S.L., Blue Power Corporation, S.L., Ferrosolar Opco Group, S.L., and Ferrosolar R&D, S.L. (filed herewith to exhibit 4.34 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.34 CONTRATO DE RESOLUCIÓN DE MUTUO ACUERDO DEL JOINT VENTURE AGREEMENT Y DEMÁS ACUERDOS DERIVADOS DEL MISMO celebrado entre GRUPO FERROATLÁNTICA, S.A.U., FERROATLÁNTICA PARTICIPACIONES, S.L.U., SILICIO FERROSOLAR, S.L.U., FERROATLÁNTICA, S.A.U., AURINKA PHOTOVOLTAIC GROUP, S.L., BLUE POWER CORPORATION, S.L., FERROSOLAR OPCO GROUP, S.L. Y FERROSOLAR R&D, S.L. En Madrid, a 11 de julio de 2

Certification of the Principal Executive Officers and Principal Financial Officer Pursuant to 18 U.S.C. 1350, as adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

Exhibit 13.1 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the annual report of Ferroglobe PLC (the “Company”) on Form 20-F for the period ended December 31, 2019, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), each of the undersigned hereby certifies, pursuant

Certification of Principal Executive Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.1 CERTIFICATION I, Marco Levi, certify that: 1. I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the per

Consent of Deloitte, S.L., Independent Registered Public Accounting Firm for Ferroglobe PLC

Exhibit 15.1 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in Registration Statement No. 333-208911 on Form S-8 of our reports relating to the financial statements of Ferroglobe PLC and the effectiveness of Ferroglobe PLC’s internal control over financial reporting dated May 29, 2020, appearing in the Annual Report on Form 20-F of Ferroglobe

- 20-F

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) or (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2019 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF

Contract granting Aurinka Photovoltaic Group, S.L. an option to purchase a maximum book value of the assets of Ferrosolar Opco Group, S.L., dated as of July 11, 2019 (filed herewith to exhibit 4.36 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.36 CONTRATO DE OTORGAMIENTO DE UN DERECHO DE OPCIÓN DE COMPRA SOBRE CIERTOS ACTIVOS TITULARIDAD DE FERROSOLAR OPCO GROUP, S.L. celebrado entre FERROSOLAR OPCO GROUP, S.L. (el "Concedente" u “OpCo”) Y AURINKA PHOTOVOLTAIC GROUP, S.L. (el "Optante" o “Aurinka”) En Madrid, a 11 de julio de 2019 1 Índice Cláusula Página 1. Objeto 5 2. Duración 5 3. Precio 5 4. Ejercicio del Derecho de Opción

Mandate for the sale of OpCo’s assets and agreement to collaborate in the search for potential investors, dated as of July 11, 2019, among Grupo Ferroatlántica, S.A.U., Silicio Ferrosolar, S.L.U., Aurinka Photovoltaic Group, S.L., Blue Power Corporation, S.L., and Ferrosolar Opco Group, S.L. (filed herewith to exhibit 4.38 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.38 MANDATO DE VENTA Y ACUERDO DE COLABORACIÓN PARA LA BÚSQUEDA DE POTENCIALES INVERSORES celebrado entre GRUPO FERROATLÁNTICA, S.A.U., SILICIO FERROSOLAR, S.L.U., AURINKA PHOTOVOLTAIC GROUP, S.L., BLUE POWER CORPORATION, S.L. Y FERROSOLAR OPCO GROUP, S.L. En Madrid, a 11 de julio de 2019 1 Índice Cláusula Página 1. OBJETO DEL CONTRATO Y COMPROMISOS DE LAS PARTES 6 2. IMPORTE Y ABONO DE L

Contract for the termination of the FAT-Aurinka Consultancy Services Agreement, dated as of July 11, 2019 (filed herewith to exhibit 4.32 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.32 CONTRATO DE RESOLUCIÓN DE MUTUO ACUERDO DEL CONSULTANCY SERVICES AGREEMENT SUSCRITO ENTRE FERROATLÁNTICA, S.A.U. Y AURINKA PHOTOVOLTAIC GROUP, S.L. EL 28 DE ABRIL DE 2017 celebrado entre FERROATLÁNTICA, S.A.U., (“FAT”) AURINKA PHOTOVOLTAIC GROUP, S.L. (“Aurinka”) GRUPO FERROATLÁNTICA, S.A.U. (“GFAT”) Y FERROSOLAR OPCO GROUP, S.L. (“OpCo”) En Madrid, a 11 de julio de 2019 1 CONTRATO DE

Right of first refusal granted to Aurinka Photovoltaic Group, S.L., as to Ferrosolar R&D, S.L. shares, dated as of July 11, 2019, among Silicio Ferrosolar , S.L.U., and Aurinka Photovoltaic Group, S.L. (filed herewith to exhibit 4.40 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.40 CONTRATO DE OTORGAMIENTO DE UN DERECHO DE TANTEO SOBRE LAS PARTICIPACIONES SOCIALES DE LA SOCIEDAD FERROSOLAR R&D, S.L. TITULARIDAD DE SILICIO FERROSOLAR, S.L.U. celebrado entre SILICIO FERROSOLAR, S.L.U. (el "Concedente" o “SFS”) Y AURINKA PHOTOVOLTAIC GROUP, S.L. (el "Optante" o “Aurinka”) En Madrid, a 11 de julio de 2019 1 Índice Cláusula Página 1 Objeto 5 2 Duración 5 3 Precio 6 4

Deed for the sale by Silicio Ferrosolar SL of 1% of the shares of Ferrosolar R&D, SL to Aurinka Photovoltaic Group SL for €1, dated as of July 11, 2019 (filed herewith to exhibit 4.31 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.31 03/2019 PAPEL EXCLUSIVO PARA DOCUMENTOS NOTARIALES – TIMBRE DEL ESTADO [ET0769412 - ET0769403] IGNACIO MANRIQUE PLAZA Notario de Madrid Ignacio Manrique Plaza Notario Calle Raimundo Fdez Villaverde N° 61 ¬ Tels.915538303 Fax. 915544947 28003 Madrid email: [email protected] Número: DOS MIL CINCO. ESCRITURA DE COMPRAVENTA DE PARTICIPACIONES DE LA SOCIEDAD "FERROSOLAR R&D, S.L." En

Master framework agreement, dated July 11, 2019, among Grupo Ferroatlántica, S.A.U., Silicio Ferrosolar, S.L.U., Ferroatlántica, S.A.U., Ferroatlántica Participaciones, S.L.U., Aurinka Photovoltaic Group, S.L., Blue Power Corporation, S.L., Ferrosolar Opco Group, S.L., and Ferrosolar R&D, S.L. (filed herewith to exhibit 4.29 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.29 CONTRATO-MARCO DE TRANSACCIÓN Y ASUNCIÓN DE COMPROMISOS COMPLEMENTARIOS entre GRUPO FERROATLÁNTICA, S.A.U., SILICIO FERROSOLAR, S.L.U., FERROATLÁNTICA, S.A.U., FERROATLÁNTICA PARTICIPACIONES, S.L.U. AURINKA PHOTOVOLTAIC GROUP, S.L., BLUE POWER CORPORATION, S.L., FERROSOLAR OPCO GROUP, S.L. y FERROSOLAR R&D, S.L. En Madrid, a 11 de julio de 2019 1 CONTRATO-MARCO DE TRANSACCIÓN Y ASUNCI

Deed for the sale by Blue Power Corp. of 25% of the shares in Ferrosolar Opco Group, SL for €1, dated as of July 11, 2019 (filed herewith to exhibit 4.30 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.30 03/2019 PAPEL EXCLUSIVO PARA DOCUMENTOS NOTARIALES – TIMBRE DEL ESTADO [ET0769402 - ET0769390] IGNACIO MANRIQUE PLAZA Notario de Madrid Ignacio Manrique Plaza Notario Calle Raimundo Fdez Villaverde N° 61 ¬ Tels.915538303 Fax. 915544947 28003 Madrid email: [email protected] Número: DOS MIL TRES. ESCRITURA DE COMPRAVENTA DE PARTICIPACIONES DE LA SOCIEDAD "FERROSOLAR OPCO GROUP, S.L

Consultancy Services Agreement between Aurinka Photovoltaic Group, S.L., and Ferrosolar Opco Group, S.L., dated as of July 11, 2019 (filed herewith to exhibit 4.35 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.35 CONSULTANCY SERVICES AGREEMENT by and between AURINKA PHOTOVOLTAIC GROUP, S.L. ("Aurinka'' or the "Consultant") And FERROSOLAR OPCO GROUP, S.L. ("OpCo") Madrid, on 11 July 2019 INDEX 1. DEFINITIONS AND INTERPRETATION 5 1.1 Definitions 5 1.2 Interpretation 8 2. SERVICES 8 2.1 Description 8 2.2 Staff 9 2.3 Standard of Performance 9 2.4 Records and Audit 9 4. FEES, PAYMENT AND INVOICING

Right of first refusal granted to Aurinka as to OpCo assets, dated as of July 11, 2019, among Ferrosolar Opco Group, S.L.U., and Aurinka Photovoltaic Group, S.L. (filed herewith to exhibit 4.39 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.39 CONTRATO DE OTORGAMIENTO DE UN DERECHO DE TANTEO SOBRE CIERTOS ACTIVOS TITULARIDAD DE FERROSOLAR OPCO GROUP, S.L. celebrado entre FERROSOLAR OPCO GROUP, S.L.U. (el "Concedente" u “OpCo”) Y AURINKA PHOTOVOLTAIC GROUP, S.L. (el "Optante" o “Aurinka”) En Madrid, a 11 de julio de 2019 1 Índice Cláusula Página 1. Objeto 5 2. Duración 5 3. Precio 6 4. Ejercicio del Derecho de Tanteo y trans

Contract for the sale of intellectual property, for the granting of patent licenses and the promise of licensing to a third party buyer, dated as of July 11, 2019, celebrated among Silicio Ferrosolar, S.L.U., and Ferrosolar R&D, S.L., Grupo Ferroatlántica, S.A.U., Aurinka Photovoltaic Group, S.L., and Blue Power Corporation, S.L. (filed herewith to exhibit 4.37 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.37 CONTRATO DE COMPRAVENTA DE DERECHOS DE PROPIEDAD INDUSTRIAL TITULARIDAD DE SILICIO FERROSOLAR, S.L.U., DE OTORGAMIENTO DE LICENCIA DE USO Y DE PROMESA DE LICENCIA celebrado entre SILICIO FERROSOLAR, S.L.U. (el "Vendedor" o “SFS”) FERROSOLAR R&D, S.L. (el "Comprador" o “R&DCo”) GRUPO FERROATLÁNTICA, S.A.U., ("GFAT") AURINKA PHOTOVOLTAIC GROUP, S.L., (“Aurinka”) BLUE POWER CORPORATION,

Commitment letter among Grupo Ferroatlántica, S.A.U., Ferroatlántica, S.A.U., Ferrosolar Opco Group, S.L., and Aurinka Photovoltaic Group, S.L. related to the consultancy services termination agreement (filed herewith to exhibit 4.33 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.33 CARTA DE COMPROMISO DE:Grupo FerroAtlántica, S.A.U. (“GFAT”), FerroAtlántica, S.A.U. (“FAT”) y Ferrosolar Opco Group, S.L (“Opco”) A:Aurinka Photovoltaic Group, S.L. (“Aurinka”) GFAT, FAT, Opco, y Aurinka, en adelante, será conjuntamente denominados las “Partes”. En Madrid, a 11 de julio de 2019. Ref.: Acuerdo de resolución de mutuo acuerdo del consultancy services agreement que fue s

Description of securities (filed herewith to exhibit 2.1 to the annual report on Form 20-F filed by the Company on May 29, 2020)

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Certification of the Principal Financial Officer Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

Exhibit 12.2 CERTIFICATION I, Beatriz García-Cos, certify that: 1. I have reviewed this annual report on Form 20-F of Ferroglobe PLC; 2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to

Lease Agreement, dated as of October 1, 2019, between Torre Espacio Gestión, S.L., and Grupo Ferroatlántica de Servicios, S.L.U. (filed herewith to exhibit 4.27 to the annual report on Form 20-F filed by the Company on May 29, 2020)

CONTRATO DE ARRENDAMIENTO DE FINCAS URBANAS PARA USO DISTINTO A VIVIENDA I.- PLIEGO DE CLÁUSULAS ESPECIALES En Madrid, a 1 de octubre de 2019 REUNIDOS De una parte: TORRE ESPACIO CASTELLANA, S.A.U., con NIF A-78917440 y domiciliada en Madrid, Paseo de la Castellana nº 259D, planta 28N; constituida por tiempo indefinido mediante escritura otorgada el 17 de octubre de 1988 ante el Notario de Madrid

Credit and Security Agreement dated October 11, 2019 among, inter alia, PNC Bank, NA, Globe Specialty Metals, Inc. and QSIP Canada ULC (filed herewith to exhibit 4.4 to the annual report on Form 20-F filed by the Company on May 29, 2020)

Exhibit 4.4 Execution Version CREDIT AND SECURITY AGREEMENT PNC BANK, NATIONAL ASSOCIATION (AS AGENT) AND THE OTHER LENDERS FROM TIME TO TIME THAT ARE PARTY HERETO WITH GLOBE SPECIALTY METALS, INC., QSIP CANADA ULC, AND EACH PERSON THAT IS JOINED TO THIS AGREEMENT AS A BORROWER FROM TIME TO TIME (BORROWERS) AND THE OTHER CREDIT PARTIES THAT ARE PARTY HERETO October 11, 2019 TABLE OF CONTENTS Page

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QuickLinks - Click here to rapidly navigate through this document SECURITIES AND EXCHANGE COMMISSION Washington, D.

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Ferroglobe PLC Your vote matters – here’s how to vote! You may vote online or by phone instead of mailing this card. Votes submitted electronically must be received by 05:01 a.m., Eastern Time, on June 26, 2019. Online Go to www.envisionreports.com/G

Exhibit 99.4 Ferroglobe PLC Your vote matters – here’s how to vote! You may vote online or by phone instead of mailing this card. Votes submitted electronically must be received by 05:01 a.m., Eastern Time, on June 26, 2019. Online Go to www.envisionreports.com/GSM or scan the QR code — login details are located in the shaded bar below. Phone Call toll free 1-800-652-VOTE (8683) within the USA, US

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Amended and Restated Service Agreement, dated June 28, 2017, between Ferroglobe and Pedro Larrea Paguaga

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First Amendment, dated October 31, 2018, to the Credit Agreement dated February 27, 2018 by and among Ferroglobe PLC, the subsidiary guarantors party thereto, the various financial institutions from time to time party thereto and PNC Bank, as Administrative Agent

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