GGB / Gerdau S.A. - Depositary Receipt (Common Stock) - Pemfailan SEC, Laporan Tahunan, Penyata Proksi

Gerdau S.A. - Depositary Receipt (Common Stock)
US ˙ NYSE ˙ US3737371050

Statistik Asas
LEI 254900YDV6SEQQPZVG24
CIK 1073404
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Gerdau S.A. - Depositary Receipt (Common Stock)
SEC Filings (Chronological Order)
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August 1, 2025 EX-99.3

NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS

Exhibit 99.3 GERDAU S.A. METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520696 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”) Boards of Directors approved, on this date, the payment of

August 1, 2025 EX-99.1

São Paulo, July 31, 2025 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the second quarter of 2025. The consolidated financial statements of the Company are presented in Brazilian Reais (R$), in accordance with International Financial

Exhibit 99.1 QUARTERLY TRIMESTRAIS TRIMESTRAIS TRIMESTRAIS RESULTADOS RESULTADOS RESULTADOS RESULTS 2Q25 4T24 4T24 4T24 Videoconference August 01 (Friday) 12:00 p.m. BRT 11:00 a.m. NY CLICK HERE to access the videoconference RI.GERDAU.COM RI.GERDAU.COM RI.GERDAU.COM RI.GERDAU.COM Gerdau S.A. São Paulo, July 31, 2025 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the second quarter

August 1, 2025 EX-99.2

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.2 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) ("Company") informs its shareholders and the market in general that the Board of Directors, at a meeting held on this date, approved the cancellation of 279,700 common shares (GGBR3) and 14,101,400 preferred shares (GGBR4) issued by the Company, with

August 1, 2025 6-K

U.S. 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 Dated August 1, 2025 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated August 1, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

August 1, 2025 EX-99.4

August 01, 2025 2Q25 Earnings Release

Exhibit 99.4 August 01, 2025 2Q25 Earnings Release DISCLAIMER This document may contain forward - looking statements. These statements arebasedon estimates and information that may be incorrect or inaccurate andthat may not occur. These estimates are also subject to risks, uncertainties, and assumptions that include, among other factors, general economic, political, and commercial conditions in Br

July 31, 2025 6-K

U.S. 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 Dated July 31, 2025 Commission File Number 1-14878 GERDAU S.A. (Trans

U.S. 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 Dated July 31, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal ex

July 31, 2025 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of June 30, 2025 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of June 30, 2025 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note June 30, 2025 December 31, 2024 CURRENT ASSETS Cash and cash equivalents 4 8,500,933 7,767,813 Short-term investments 4 472,917 509,030 Trade accounts receivable - net 5 5,799,331 5,176,958 Inventories 6 16,04

June 10, 2025 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 month of June 2025 Commission File Number: 001-14878

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 2025 Commission File Number: 001-14878 GERDAU S.A. Av. Dra. Ruth Cardoso, 8501, 8th floor 05425-070 São Paulo, São Paulo Federative Republic of Brazil (Address of principal executive offic

June 9, 2025 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 month of June 2025 Commission File Number: 001-14878

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 2025 Commission File Number: 001-14878 Gerdau S.A. Avenida Dra. Ruth Cardoso, 8501, 8th floor, São Paulo, SP, 05425-070, Brazil (Address of principal executive offices) Indicate by check m

June 9, 2025 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 month of June 2025 Commission File Number: 001-14878

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 2025 Commission File Number: 001-14878 GERDAU S.A. Av. Dra. Ruth Cardoso, 8501, 8th floor 05425-070 São Paulo, São Paulo Federative Republic of Brazil (Address of principal executive offic

June 9, 2025 EX-5.3

Appendix A Director's Certificate

Exhibit 5.3 Our ref: EWR/724197-000008/40606775v9 Gerdau Trade Inc. Kingston Chambers PO Box 173 Road Town Tortola British Virgin Islands 9 June 2025 Dear Sirs Gerdau Trade Inc. (the "Company") We have acted as counsel as to British Virgin Islands law to the Company in connection with the Company's registration statement on Form F-3, including all amendments or supplements thereto, filed with the

June 9, 2025 8-A12B

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) or 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-A FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT TO SECTION 12(b) or 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 Gerdau S.A. Gerdau Trade Inc. (Exact name of Registrant as specified in its charter) (Exact name of Registrant as specified in its charter) Federative Republic of Brazil The British Virgin Island

June 9, 2025 EX-4.2

Dated as of June 9, 2025 First Supplemental Indenture 5.750% Notes due 2035 Gerdau Trade Inc., as Company Gerdau S.A., Gerdau Açominas S.A. and Gerdau Aços Longos S.A., as Guarantors The Bank of New York Mellon, as Trustee, Paying Agent, Registrar an

Exhibit 4.2 Dated as of June 9, 2025 First Supplemental Indenture U.S.$650,000,000 5.750% Notes due 2035 between Gerdau Trade Inc., as Company Gerdau S.A., Gerdau Açominas S.A. and Gerdau Aços Longos S.A., as Guarantors and The Bank of New York Mellon, as Trustee, Paying Agent, Registrar and Transfer Agent Table of Contents Page 1. Ratification of the Base Indenture 1 2. Definitions 2 3. General T

June 9, 2025 EX-4.1

Dated as of June 9, 2025 GERDAU TRADE INC., as Company GERDAU S.A. GERDAU AÇOMINAS S.A. GERDAU AÇOS LONGOS S.A., as Guarantors THE BANK OF NEW YORK MELLON, as Trustee, Paying Agent, Registrar and Transfer Agent

Exhibit 4.1 Dated as of June 9, 2025 INDENTURE between GERDAU TRADE INC., as Company and GERDAU S.A. GERDAU AÇOMINAS S.A. GERDAU AÇOS LONGOS S.A., as Guarantors and THE BANK OF NEW YORK MELLON, as Trustee, Paying Agent, Registrar and Transfer Agent    Table of Contents Page Article I Definitions and Other Provisions of General Application 1 Section 1.1 Definitions 1 Section 1.2 Compliance Certific

June 6, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables F-3 GERDAU S.A. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing F

June 6, 2025 424B2

GERDAU TRADE INC. 5.750% Notes due 2035 Fully, unconditionally and irrevocably guaranteed by GERDAU S.A. GERDAU AÇOMINAS S.A. GERDAU AÇOS LONGOS S.A.

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(2)  Registration Statement No. 333-287733, 333-287733-01, 333-287733-02, 333-287733-03 PROSPECTUS SUPPLEMENT (To prospectus dated June 3, 2025) GERDAU TRADE INC. US$650,000,000 5.750% Notes due 2035 Fully, unconditionally and irrevocably guaranteed by GERDAU S.A. GERDAU AÇOMINAS S.A. GERDAU AÇOS LONGOS S.A. Gerdau Trade Inc. (the “issuer”) is offeri

June 5, 2025 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 month of June 2025 Commission File Number: 001-14878

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 2025 Commission File Number: 001-14878 GERDAU S.A. Av. Dra. Ruth Cardoso, 8501, 8th floor 05425-070 São Paulo, São Paulo Federative Republic of Brazil (Address of principal executive offic

June 5, 2025 FWP

PRICING TERM SHEET Gerdau Trade Inc. U.S.$650,000,000 5.750% Notes due 2035 Unconditionally Guaranteed by Gerdau S.A. June 4, 2025

Issuer Free Writing Prospectus filed pursuant to Rule 433 Supplementing the Preliminary Prospectus Supplement dated June 3, 2025 Registration Nos.

June 5, 2025 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 month of June 2025 Commission File Number: 001-14878

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 2025 Commission File Number: 001-14878 Gerdau S.A. Av. Dra. Ruth Cardoso, 8501, 8th floor 05425-070 São Paulo, São Paulo Federative Republic of Brazil (Address of principal executive offic

June 5, 2025 EX-1.1

DATED JUNE 4, 2025 GERDAU TRADE INC. U.S.$650,000,000 5.750% Notes due 2035 UNCONDITIONALLY AND IRREVOCABLY GUARANTEED BY Gerdau S.A. Gerdau Açominas S.A. Gerdau Aços Longos S.A. UNDERWRITING AGREEMENT

Exhibit 1.1 DATED JUNE 4, 2025 GERDAU TRADE INC. U.S.$650,000,000 5.750% Notes due 2035 UNCONDITIONALLY AND IRREVOCABLY GUARANTEED BY Gerdau S.A. Gerdau Açominas S.A. Gerdau Aços Longos S.A. UNDERWRITING AGREEMENT June 4, 2025 BofA Securities, Inc. One Bryant Park New York, New York 10036 United States Goldman Sachs & Co. LLC 200 West Street New York, New York 10282 United States J.P. Morgan Secur

June 3, 2025 EX-FILING FEES

Table 1: Newly Registered and Carry Forward Securities

Calculation of Filing Fee Tables F-3 GERDAU S.A. Table 1: Newly Registered and Carry Forward Securities Security Type Security Class Title Fee Calculation or Carry Forward Rule Amount Registered Proposed Maximum Offering Price Per Unit Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Carry Forward Form Type Carry Forward File Number Carry Forward Initial Effective Date Filing F

June 3, 2025 EX-99.1

MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Exhibit 99.1 MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS The following discussion of Gerdau S.A.’s (which we refer to as “Gerdau” or “we”) results of operations for the three-month periods ended March 31, 2025 and 2024 should be read in conjunction with our annual report on Form 20-F for the fiscal year ended December 31, 2024, as filed with the U.S. Secur

June 3, 2025 424B2

Subject to Completion, dated June 3, 2025

TABLE OF CONTENTS  Filed Pursuant to Rule 424(b)(2)  Registration Statement No. 333-287733, 333-287733-01, 333-287733-02, 333-287733-03 The information in this preliminary prospectus supplement is not complete and may be changed. This preliminary prospectus supplement and the accompanying prospectus are not an offer to sell these securities and are not soliciting an offer to buy these securities i

June 3, 2025 EX-5.3

Appendix A Director's Certificate

Exhibit 5.3 Our ref: RZB/724197-000008/40112873v6 Gerdau Trade Inc. Kingston Chambers PO Box 173 Road Town Tortola British Virgin Islands 3 June 2025 Dear Sirs Gerdau Trade Inc. (the "Company") We have acted as counsel as to British Virgin Islands law to the Company and have been asked to provide this legal opinion in connection with the Company's registration statement on Form F-3, including all

June 3, 2025 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 month of June 2025 Commission File Number: 001-14878

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 2025 Commission File Number: 001-14878 GERDAU S.A. Av. Dra. Ruth Cardoso, 8501, 8th floor 05425-070 São Paulo, São Paulo Federative Republic of Brazil (Address of principal executive offic

June 3, 2025 EX-25.1

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE

Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE ¨ CHECK IF AN APPLICATION TO DETERMINE ELIGIBILITY OF A TRUSTEE PURSUANT TO SECTION 305(b)(2) THE BANK OF NEW YORK MELLON (Exact name of trustee as specified in its charter) New York 13-5160382 (State of incorpo

June 3, 2025 F-3ASR

As filed with the Securities and Exchange Commission on June 3, 2025

TABLE OF CONTENTS As filed with the Securities and Exchange Commission on June 3, 2025 Registration No.

June 3, 2025 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 month of June 2025 Commission File Number: 001-14878

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 2025 Commission File Number: 001-14878 Gerdau S.A. Av. Dra. Ruth Cardoso, 8501, 8th floor 05425-070 São Paulo, São Paulo Federative Republic of Brazil (Address of principal executive offic

June 3, 2025 EX-4.1

Dated as of             , 2025 GERDAU TRADE INC., as Company GERDAU S.A. GERDAU AÇOMINAS S.A. GERDAU AÇOS LONGOS S.A., as Guarantors THE BANK OF NEW YORK MELLON, as Trustee, Paying Agent, Registrar and Transfer Agent Table of Contents

Exhibit 4.1 Dated as of             , 2025 INDENTURE between GERDAU TRADE INC., as Company and GERDAU S.A. GERDAU AÇOMINAS S.A. GERDAU AÇOS LONGOS S.A., as Guarantors and THE BANK OF NEW YORK MELLON, as Trustee, Paying Agent, Registrar and Transfer Agent Table of Contents Page Article I Definitions and Other Provisions of General Application        1 Section 1.1 Definitions 1 Section 1.2 Complianc

May 27, 2025 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT GERDAU S.A. (Exact name of Registrant as specified in its charter) Federative Republic of Brazil 1-14878 n/a (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) Av. Doutora Ruth Cardoso 8501 / 8th floor São Paulo, São Pa

May 14, 2025 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”) announces that the Executive Officers approved, on this date, its 19th issuance of unsecured, non-convertible debentures, in a single serie, for a total amount of R$1,375,000,000.00 (“Debentures” and “Issuance”, respectively). The

May 14, 2025 6-K

U.S. 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 Dated May 14, 2025 Commission File Number 1-14878 GERDAU S.A. (Transl

U.S. 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 Dated May 14, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal exe

April 30, 2025 6-K

U.S. 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 Dated April 30, 2025 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated April 30, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

April 30, 2025 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) ("Company"), following up on the Notice to the Market released on May 03, 2024, informs its shareholders and the market in general that it decided to end the feasibility analysis of a new greenfield unit in Mexico, whose focus would be on the

April 29, 2025 6-K

U.S. 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 Dated April 29, 2025 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated April 29, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

April 29, 2025 EX-99.6

April 29, 2025 1Q25 Earnings Release DISCLAIMER Thisdocument maycontain forward-looking statements. Thesestatements arebasedon estimates andinformation that maybeincorrect orinaccurate andthat maynot occur. These estimates are alsosubjectto risks, un

Exhibit 99.6 April 29, 2025 1Q25 Earnings Release DISCLAIMER Thisdocument maycontain forward-looking statements. Thesestatements arebasedon estimates andinformation that maybeincorrect orinaccurate andthat maynot occur. These estimates are alsosubjectto risks, uncertainties, andassumptions thatinclude, amongother factors, generaleconomic, political, andcommercial conditions inBrazil andinthe marke

April 29, 2025 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of March 31, 2025 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of March 31, 2025 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note March 31, 2025 December 31, 2024 CURRENT ASSETS Cash and cash equivalents 4 6,479,544 7,767,813 Short-term investments 4 390,335 509,030 Trade accounts receivable - net 5 6,252,231 5,176,958 Inventories 6 16,

April 29, 2025 EX-99.5

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.5 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Company”), pursuant to paragraph 4 of article 157 of Federal Law 6.404/76 and on terms of Resolution 44 issued by the Securities and Exchange Commission of Brazil (CVM) on August 23, 2022, informs its shareholders and the market in general that the

April 29, 2025 EX-99.1

This content is Public. QUARTERLY RESULTS 1Q25 Videoconference April 29 (Tuesday) 12:00 p.m. BRT 11:00 a.m. NY CLICK HERE to access the videoconference RI.GERDAU.COM Gerdau S.A. São Paulo, April 28, 2025 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces

Exhibit 99.1 This content is Public. QUARTERLY RESULTS 1Q25 Videoconference April 29 (Tuesday) 12:00 p.m. BRT 11:00 a.m. NY CLICK HERE to access the videoconference RI.GERDAU.COM Gerdau S.A. São Paulo, April 28, 2025 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the first quarter of 2025. The consolidated financial statements of the Company are presented in Brazilian Reais (R$), i

April 29, 2025 EX-99.4

GERDAU S.A. CNPJ nº 33.611.500/0001-19 NIRE: 35300520696 NOTICE TO THE MARKET

Exhibit 99.4 GERDAU S.A. CNPJ nº 33.611.500/0001-19 NIRE: 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB), in continuation of the Notice to the Market released on January 21, 2025, informs its shareholders and the market in general that concluded, through its controlled companies Sul Renováveis Participações S.A. and Gerdau Aços Longos S.A., after fulfilling all the conditions

April 29, 2025 6-K

U.S. 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 Dated April 28, 2025 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated April 28, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

April 29, 2025 EX-99.3

GERDAU S.A. CNPJ nº 33.611.500/0001-19 NIRE: 35300520696 MATERIAL FACT

Exhibit 99.3 GERDAU S.A. CNPJ nº 33.611.500/0001-19 NIRE: 35300520696 MATERIAL FACT Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”), informs its shareholders and the market in general that the Board of Directors met today and approved the merger of its wholly owned subsidiary, Gerdau Summit Aços Fundidos e Forjados S.A., which will be submitted for resolution by the Extraordinary General Meeting to

April 29, 2025 EX-99.2

NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS

Exhibit 99.2 GERDAU S.A. METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520696 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”) Boards of Directors approved, on this date, the payment of

March 14, 2025 EX-23.01

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Exhibit 23.01 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-171217 and 333-179182) of Gerdau S.A. of our report dated March 14, 2025 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 20-F. /

March 14, 2025 EX-1.01

GERDAU S.A. CNPJ nº 33.611.500/0001-19. NIRE Nº 35300520696 Public Held Company.

EXHIBIT 1.01 BYLAWS OF GERDAU S.A. GERDAU S.A. CNPJ nº 33.611.500/0001-19. NIRE Nº 35300520696 Public Held Company. BYLAWS CHAPTER I. HEADQUARTERS, PURPOSES AND DURATION Art. 1. GERDAU S.A., with headquarters and jurisdiction in the City of São Paulo, State of São Paulo, at Avenida Doutora Ruth Cardoso, 8.501, 8th floor, Conjunto 2, Bairro Pinheiros, CEP 05425-070, will be ruled by these Bylaws an

March 14, 2025 EX-13.01

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

EXHIBIT 13.01 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE U.S. SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Gerdau S.A. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2024, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, Gustavo Werneck da Cunha, Chief Executiv

March 14, 2025 20-F

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 ☐ 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 THE SECURIT

March 14, 2025 EX-12.01

Gustavo Werneck da Cunha

EXHIBIT 12.01 CERTIFICATION I, Gustavo Werneck da Cunha, certify that: 1. I have reviewed this annual report on Form 20-F of Gerdau S.A.; 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 respec

March 14, 2025 EX-14.02

SECURITIES TRADING POLICY

EXHIBIT 14.02 SECURITIES TRADING POLICY 1.OBJECTIVES 1.1.The objective of this Securities Trading Policy is to regulate operations with Securities (a) by establishing the applicable conduct, guidelines and restrictions, in an orderly way and within the parameters established by CVM Resolution 44 and the other policies of the Company; and (b) by ensuring transparency in transactions with Securities

March 14, 2025 EX-12.02

Rafael Dorneles Japur

EXHIBIT 12.02 CERTIFICATION I, Rafael Dorneles Japur, certify that: 1. I have reviewed this annual report on Form 20-F of Gerdau S.A.; 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 t

March 14, 2025 EX-13.02

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

EXHIBIT 13.02 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE U.S. SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Gerdau S.A. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2024, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, Rafael Dorneles Japur, Chief Financial Of

February 21, 2025 6-K

U.S. 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 Dated February 20, 2025 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated February 20, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

February 21, 2025 6-K

U.S. 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 Dated February 21, 2025 Commission File Number 1-14878 GERDAU S.A. (T

6-K 1 tm257301d16k.htm FORM 6-K U.S. 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 Dated February 21, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CE

February 21, 2025 EX-99.2

This content is Confidential. MANAGEMENT 2024 REPORT NEW HOT-ROLLED COIL MILL Ouro Branco Unit in Minas Gerais Gerdau S.A. Management Report - 2024 Gerdau S.A. 2 MESSAGE FROM MANAGEMENT We ended 2024 with results that reflect our capacity for adaptat

Exhibit 99.2 This content is Confidential. MANAGEMENT 2024 REPORT NEW HOT-ROLLED COIL MILL Ouro Branco Unit in Minas Gerais Gerdau S.A. Management Report - 2024 Gerdau S.A. 2 MESSAGE FROM MANAGEMENT We ended 2024 with results that reflect our capacity for adaptation through collaborative work and a focus on common goals. Our safety indicators recorded all-time best results, reflecting our commitme

February 21, 2025 EX-99.1

February 20, 2025 4Q24 Earnings Release DISCLAIMER This document may contain forward-looking statements. These statements are based on estimates and information that may be incorrect or inaccurate and that may not occur. These estimates are also subj

Exhibit 99.1 February 20, 2025 4Q24 Earnings Release DISCLAIMER This document may contain forward-looking statements. These statements are based on estimates and information that may be incorrect or inaccurate and that may not occur. These estimates are also subject to risks, uncertainties, and assumptions that include, among other factors, general economic, political, and commercial conditions in

February 21, 2025 EX-99.1

This content is Confidential. QUARTERLY RESULTS 4Q24 Gerdau S.A. NEW HOT-ROLLED COIL MILL Ouro Branco Unit in Minas Gerais Videoconference February 20 (Thursday) 10:00 a.m. NY | 12:00 p.m. BRT CLICK HERE to access the videoconference RI.GERDAU.COM 2

Exhibit 99.1 This content is Confidential. QUARTERLY RESULTS 4Q24 Gerdau S.A. NEW HOT-ROLLED COIL MILL Ouro Branco Unit in Minas Gerais Videoconference February 20 (Thursday) 10:00 a.m. NY | 12:00 p.m. BRT CLICK HERE to access the videoconference RI.GERDAU.COM 2 São Paulo, February 19, 2025 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the fourth quarter of 2024. The consolidated

February 20, 2025 EX-99.3

MATERIAL FACT CAPEX Investment Plan

Exhibit 99.3 GERDAU S.A. METALÚRGICA GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Corporate Tax ID (CNPJ/MF): 92.690.783/0001-09 Company Registry (NIRE): 35300520696 Company Registry (NIRE): 35300520751 MATERIAL FACT CAPEX Investment Plan Gerdau S.A. (B3: GGBR / NYSE: GGB) and Metalúrgica Gerdau S.A. (B3: GOAU) (together "Companies") inform their shareholders and the market in genera

February 20, 2025 EX-99.2

NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS

Exhibit 99.2 GERDAU S.A. METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520696 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. (B3: GGBR / NYSE: GGB) and Metalúrgica Gerdau S.A. (B3: GOAU) (collectively, the “Companies”) Boards of Directors appro

February 20, 2025 6-K

U.S. 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 Dated February 20, 2025 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated February 20, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

February 20, 2025 EX-99.1

NOTICE TO THE MARKET Change in reportable segments starting from the 2025 fiscal year

Exhibit 99.1 GERDAU S.A. METALÚRGICA GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Corporate Tax ID (CNPJ/MF): 92.690.783/0001-09 Company Registry (NIRE): 35300520696 Company Registry (NIRE): 35300520751 NOTICE TO THE MARKET Change in reportable segments starting from the 2025 fiscal year Gerdau S.A. (B3: GGBR / NYSE: GGB) and Metalúrgica Gerdau S.A. (B3: GOAU) (together "Companies")

February 10, 2025 6-K

U.S. 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 Dated February 10, 2025 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated February 10, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

February 10, 2025 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”), following the Notice to the Market released on November 21, 2024, informs its shareholders and the market in general that on this date, after fulfilling all precedent conditions for this type of operation, including approval by compe

January 22, 2025 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) informs its shareholders and the market in general that its subsidiaries Gerdau Aços Longos S.A. and Sul Renováveis Participações S.A. have entered into agreements with Atiaia Energia S.A. for the acquisition of all shares of Rio do Sangue S.A

January 22, 2025 6-K

U.S. 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 Dated January 22, 2025 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated January 22, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

January 21, 2025 6-K

U.S. 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 Dated January 21, 2025 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated January 21, 2025 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

January 21, 2025 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) ("Company") informs its shareholders and the market in general that the share buyback program issued by the Company ("2024 Buyback Program"), disclosed by Material Fact on July 31, 2024, was concludedon this date. During the period of the buyback, 1,

December 31, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Gerdau” or "Company") informs its shareholders and the market in general that, on this date, the Company and its subsidiary Gerdau Aços Longos S.A. entered into an Agreement with the Conselho Administrativo de Defesa Econômica (“CADE”), subj

December 31, 2024 6-K

U.S. 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 Dated December 31, 2024 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated December 31, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

December 13, 2024 EX-99.1

THIS ANNOUNCEMENT IS FOR INFORMATION PURPOSES ONLY, AND IS NOT AN OFFER TO SELL SECURITIES. CLOSING ANNOUNCEMENT

EX-99.1 2 tm2431052d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 THIS ANNOUNCEMENT IS FOR INFORMATION PURPOSES ONLY, AND IS NOT AN OFFER TO SELL SECURITIES. CLOSING ANNOUNCEMENT OF THE PUBLIC OFFERING OF THE 18TH (EIGHTEENTH) ISSUANCE OF SIMPLE, NON-COVERTIBLE DEBENTURES, UNSECURED, IN A SINGLE SERIES, FOR PUBLIC DISTRIBUTION, UNDER THE AUTOMATIC REGISTRATION RITE OF GERDAU S.A. Corporate Taxpayer ID (CN

December 13, 2024 6-K

U.S. 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 Dated December 13, 2024 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated December 13, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

December 9, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Gerdau” or "Company") informs its shareholders and the market in general that the Company, its subsidiary Gerdau Aços Longos S.A. ("Gerdau Aços Longos"), and Newave Energia S.A. ("Newave Energia"), a company in which the Company holds an ind

December 9, 2024 6-K

U.S. 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 Dated December 9, 2024 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated December 9, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

November 21, 2024 6-K

U.S. 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 Dated November 21, 2024 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated November 21, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

November 21, 2024 EX-99.1

Gerdau S.A. Corporate Taxpayer ID (CNPJ) n.º 33.611.500/0001-19 Registry (NIRE) n.º 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 Gerdau S.A. Corporate Taxpayer ID (CNPJ) n.º 33.611.500/0001-19 Registry (NIRE) n.º 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”) announces that the Board of Directors approved, on this date, its 18th issuance of unsecured, non-convertible debentures, in up to two series, for a total amount of R$1,500,000,000.00 (“Debentures” and “Issuance”, respectiv

November 21, 2024 EX-99.2

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.2 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”) informs its shareholders and the market in general that it has entered into an agreement with Sumitomo Corporation and The Japan Steel Works Ltd. to acquire 39,53% and 1,74% of the total shares issued by Gerdau Summit Aços Fundidos

November 6, 2024 EX-99.3

NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS

Exhibit 99.3 GERDAU S.A. METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520696 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the "Companies") Boards of Directors approved, on this date, the payment of

November 6, 2024 EX-99.4

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.4 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Company”), pursuant to paragraph 4 of article 157 of Federal Law 6.404/76 and on terms of Resolution 44 issued by the Securities and Exchange Commission of Brazil (CVM) on August 23, 2022, informs that its Board of Directors, in a meeting held on N

November 6, 2024 EX-99.1

2 São Paulo, November 5, 2024 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the third quarter of 2024. The consolidated financial statements of the Company are presented in Brazilian reais (R$), in accordance with International Finan

Exhibit 99.1 This content is Confidential. This content is Public. WORLD STAGE MADE WITH GERDAU STEEL Rock In Rio Brazil 2024 Videoconference November 6 (Wednesday) 10:00 a.m. NY | 12:00 p.m. BRT CLICK HERE to access the videoconference RI.GERDAU.COM QUARTERLY RESULTS 3Q24 Gerdau S.A. 2 São Paulo, November 5, 2024 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the third quarter of

November 6, 2024 6-K

U.S. 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 Dated November 6, 2024 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated November 6, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

November 6, 2024 EX-99.2

DISCLAIMER This document may contain forward-looking statements. These statements are based on estimates and information that may be incorrect or inaccurate and that may not occur. These estimates are also subject to risks, uncertainties, and assumpt

Exhibit 99.2 November 6, 2024 3Q24 Earnings Release DISCLAIMER This document may contain forward-looking statements. These statements are based on estimates and information that may be incorrect or inaccurate and that may not occur. These estimates are also subject to risks, uncertainties, and assumptions that include, among other factors, general economic, political, and commercial conditions in

November 5, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET GERDAU S.A. (B3: GGBR / NYSE: GGB), in addition to the Notice to the Market released on September 20, 2024, informs its shareholders and the market in general that, on November, 1st, 2024, after fulfillment the precedent conditions, the acquisition of assets from Dales Recyclin

November 5, 2024 6-K

U.S. 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 Dated November 5, 2024 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated November 5, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

November 5, 2024 EX-99.1

Long term incentive plan

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of September 30, 2024 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note September 30, 2024 December 31, 2023 CURRENT ASSETS Cash and cash equivalents 4 8,074,104 3,005,645 Short-term investments 4 757,578 2,338,097 Trade accounts receivable 5 5,673,760 4,875,394 Inventories 6

November 5, 2024 6-K

U.S. 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 Dated November 5, 2024 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated November 5, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

October 24, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 GERDAU S.A. (83: GGBR / NYSE: GGB) (“Company”), informs that, in report disclosed today, S&P Ratings upgraded the Long-Term Foreign Currency Issuer Default Rating (IDRs) of Gerdau S.A. to ‘BBB’ from ‘BBB-’. S&P also upgraded Gerdau’s and its related subsidiary companies’ senior unsecured notes to ‘

October 24, 2024 6-K

U.S. 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 Dated October 24, 2024 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated October 24, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

October 4, 2024 EX-99.2

AGENDA OPENING BRAZIL BD SOUTH AMERICA BD NORTH AMERICA BD SPECIAL STEEL BD FINANCIAL MANAGEMENT TAKEAWAYS Q&A FOR EACH CHALLENGE, OUR BEST VERSION 3 SAFETY IS OUR VALUE QUALITY IS OUR BUSINESS EFFICIENCY IS OUR PROGRESS 4 AND OUR FUTURE LIES IN PEOP

Exhibit 99.2 October 3rd, 2024 AGENDA OPENING BRAZIL BD SOUTH AMERICA BD NORTH AMERICA BD SPECIAL STEEL BD FINANCIAL MANAGEMENT TAKEAWAYS Q&A FOR EACH CHALLENGE, OUR BEST VERSION 3 SAFETY IS OUR VALUE QUALITY IS OUR BUSINESS EFFICIENCY IS OUR PROGRESS 4 AND OUR FUTURE LIES IN PEOPLE Rômulo Jesuíno da Silva Ouro Branco Unit 5 BRAZIL BD GUSTAVO WERNECK 8,8% 11,5% 10,5% 10,3% 9,1% 15,3% 13,3% 18,3% 1

October 4, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Company”), informs that, in report disclosed today, Moody’s Ratings upgraded the Long-Term Foreign Currency Issuer Default Rating (IDRs) of Gerdau S.A. to ‘Baa2’ from ‘Baa3’. Moddy’s also upgraded Gerdau’s and its related subsidiary companie

October 4, 2024 6-K

U.S. 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 Dated October 3, 2024 Commission File Number 1-14878 GERDAU S.A. (Tra

U.S. 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 Dated October 3, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

October 4, 2024 EX-99.3

MATERIAL FACT

Exhibit 99.3 GERDAU S.A. METALÚRGICA GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Corporate Tax ID (CNPJ/MF): 92.690.783/0001-09 Company Registry (NIRE): 35300520696 Company Registry (NIRE): 35300520751 MATERIAL FACT Gerdau S.A. (B3: GGBR / NYSE: GGB) and Metalúrgica Gerdau S.A. (B3: GOAU) (jointly, “Companies”), hereby inform its shareholders and the market in general that the infor

September 23, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) announces to its shareholders and the general market that, on September 17, 2024, Gerdau Ameristeel US Inc., subsidiary of Gerdau in North America, signed an agreement to acquire the assets of Dales Recycling Partnership, a company engaged in

September 23, 2024 6-K/A

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated September 23, 2024 Commission File Number 1-14878 GERDAU S.A.

U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K/A REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated September 23, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of princ

September 18, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) announces to its shareholders and the general market that, on September 17, 2024, Gerdau Ameristeel US Inc., subsidiary of Gerdau in North America, signed an agreement to acquire the assets of Dales Recycling Partnership, a company engaged in

September 18, 2024 6-K

U.S. 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 Dated September 18, 2024 Commission File Number 1-14878 GERDAU S.A. (

U.S. 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 Dated September 18, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of princip

September 10, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) announces to its shareholders and the general market that alongside Petroleo Brasileiro S.A. - Petrobras, has started working under a non-binding Memorandum of Understanding with a term of 2 (two) years , and the goal of pursuing commercial op

September 10, 2024 6-K

U.S. 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 Dated September 10, 2024 Commission File Number 1-14878 GERDAU S.A. (

U.S. 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 Dated September 10, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of princip

August 29, 2024 6-K

U.S. 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 Dated August 29, 2024 Commission File Number 1-14878 GERDAU S.A. (Tra

U.S. 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 Dated August 29, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

August 29, 2024 EX-99.1

Exhibit 99.1 1. Tax on the circulation of goods and services 2. Social Integration Program and Contribution for Social Security Financing GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 METALÚRGICA GERD

Exhibit 99.1 1. Tax on the circulation of goods and services 2. Social Integration Program and Contribution for Social Security Financing GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Corporate Tax ID (CNPJ/MF): 92.690.783/0001-09 Company Registry (NIRE): 35300520751 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) and METAL

August 16, 2024 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

EX-99.1 2 tm2421942d1ex99-1.htm EXHIBIT 99.1 Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”) informs its shareholders and the market in general that company Addiante S.A. ("Addiante"), a joint venture of its subsidiary Gerdau Next S.A. and Randon Serviços e Participações Ltda., has signed

August 16, 2024 6-K

U.S. 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 Dated August 16, 2024 Commission File Number 1-14878 GERDAU S.A. (Tra

U.S. 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 Dated August 16, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

August 13, 2024 EX-99.(E)

Certification under Rule 466

Certification under Rule 466 The depositary, JPMorgan Chase Bank, N.A. represents and certifies the following: (1) That it previously had filed a registration statement on Form F-6 (Gerdau S.A. 333-249041) that the Commission declared effective, with terms of deposit identical to the terms of deposit of this registration statement. (2) That its ability to designate the date and time of effectivene

August 13, 2024 EX-99.(A)(3)

AMERICAN DEPOSITARY RECEIPT AMERICAN DEPOSITARY SHARES PREFERRED SHARES GERDAU S.A. (Incorporated under the laws of the Federative Republic of Brazil)

No. of ADSs: Number Each ADS represents One Share CUSIP: AMERICAN DEPOSITARY RECEIPT evidencing AMERICAN DEPOSITARY SHARES representing PREFERRED SHARES of GERDAU S.A. (Incorporated under the laws of the Federative Republic of Brazil) JPMORGAN CHASE BANK, N.A., a national banking association organized under the laws of the United States of America, as depositary hereunder (the "Depositary"), hereb

August 13, 2024 EX-99.(D)

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, Suite 2405 New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 August 13, 2024

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, Suite 2405 New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 August 13, 2024 JPMorgan Chase Bank, N.

August 13, 2024 F-6EF

As filed with the U.S. Securities and Exchange Commission on August 13, 2024

As filed with the U.S. Securities and Exchange Commission on August 13, 2024 Registration No. 333- UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 For Depositary Shares Evidenced by American Depositary Receipts Gerdau S.A. (Exact name of issuer of deposited securities as specified in its charter) n/a (Translat

July 31, 2024 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of June 30, 2024 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of June 30, 2024 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note June 30, 2024 December 31, 2023 CURRENT ASSETS Cash and cash equivalents 4 4,889,466 3,005,645 Short-term investments 4 1,749,547 2,338,097 Trade accounts receivable 5 5,875,819 4,875,394 Inventories 6 16,547,

July 31, 2024 6-K

U.S. 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 Dated July 31, 2024 Commission File Number 1-14878 GERDAU S.A. (Trans

U.S. 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 Dated July 31, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal ex

June 7, 2024 6-K

U.S. 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 Dated June 7, 2024 Commission File Number 1-14878 GERDAU S.A. (Transl

U.S. 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 Dated June 7, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal exe

June 7, 2024 EX-99.1

GERDAU S.A. CNPJ nº 33.611.500/0001-19 NIRE 35300520696 NOTICE TO SHAREHOLDERS PAYMENT OF FRACTIONS OF SHARES ARISING FROM BONUS ISSUE

Exhibit 99.1 GERDAU S.A. CNPJ nº 33.611.500/0001-19 NIRE 35300520696 NOTICE TO SHAREHOLDERS PAYMENT OF FRACTIONS OF SHARES ARISING FROM BONUS ISSUE GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Company”), in addition to the Material Fact disclosed on April 16, 2024, informs its shareholders that, as a result of the bonus issue approved at the Extraordinary General Meeting on April 16, 2024, the fractions o

May 31, 2024 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT GERDAU S.A. (Exact name of Registrant as specified in its charter) Federative Republic of Brazil 1-14878 n/a (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) Av. Doutora Ruth Cardoso 8501 / 8th floor São Paulo, São Pa

May 31, 2024 6-K

U.S. 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 Dated May 31, 2024 Commission File Number 1-14878 GERDAU S.A. (Transl

U.S. 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 Dated May 31, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal exe

May 31, 2024 EX-99.1

THIS ANNOUNCEMENT IS FOR INFORMATIONAL PURPOSES ONLY AND IS NOT AN OFFER TO SELL SECURITIES. CLOSING ANNOUNCEMENT

Exhibit 99.1 THIS ANNOUNCEMENT IS FOR INFORMATIONAL PURPOSES ONLY AND IS NOT AN OFFER TO SELL SECURITIES. CLOSING ANNOUNCEMENT OF THE PUBLIC OFFERING OF THE 17TH (SEVENTEENTH) ISSUANCE OF SIMPLE DEBENTURES, NOT CONVERTIBLE INTO SHARES, OF THE UNSECURED TYPE, IN A SINGLE SERIES, FOR PUBLIC DISTRIBUTION, UNDER THE AUTOMATIC REGISTRATION RIGHT OF GERDAU S.A. Category “A” Corporate Taxpayer ID (CNPJ/M

May 29, 2024 EX-99.2

NOTICE TO THE MARKET

Exhibit 99.2 NOTICE TO THE MARKET IN CONNECTION WITH THE RESULT OF THE BOOKBUILDING PROCEDURE OF THE PUBLIC OFFERING OF THE 17TH (SEVENTEENTH) ISSUANCE OF SIMPLE DEBENTURES, NOT CONVERTIBLE INTO SHARES, OF THE UNSECURED TYPE, IN A SINGLE SERIES, FOR PUBLIC DISTRIBUTION, UNDER THE AUTOMATIC REGISTRATION RIGHT OF GERDAU S.A. Corporate Taxpayer ID (CNPJ/MF) No. 33.611.500/0001-19 in the total amount

May 29, 2024 EX-99.1

ANNOUNCEMENT OF COMMENCEMENT

Exhibit 99.1 ANNOUNCEMENT OF COMMENCEMENT OF THE PUBLIC OFFERING OF THE 17TH (SEVENTEENTH) ISSUANCE OF SIMPLE DEBENTURES, NOT CONVERTIBLE INTO SHARES, OF THE UNSECURED TYPE, IN A SINGLE SERIES, FOR PUBLIC DISTRIBUTION, UNDER THE AUTOMATIC REGISTRATION RIGHT OF GERDAU S.A. Corporate Taxpayer ID (CNPJ/MF) No.33.611.500/0001-19 in the total amount of R$1,500,000,000.00 Debentures ’s ISIN code: BRGGBR

May 29, 2024 6-K

U.S. 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 Dated May 29, 2024 Commission File Number 1-14878 GERDAU S.A. (Transl

U.S. 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 Dated May 29, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal exe

May 6, 2024 EX-99.3

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.3 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”) Boards of Directors approved, on May 02, 2024, the payment

May 6, 2024 EX-99.1

2 São Paulo, May 2, 2024 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the first quarter of 2024. The consolidated financial statements of the Company are presented in Brazilian reais (R$), in accordance with International Financial

Exhibit 99.1 This content is Confidential. Gerdau S.A. QUARTELY RESULTS CLICK HERE to access the videoconference RI.GERDAU.COM Videoconference May 3 (Friday) 11:00 a.m. NY | 12:00 p.m. BRT 2 São Paulo, May 2, 2024 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the first quarter of 2024. The consolidated financial statements of the Company are presented in Brazilian reais (R$), in a

May 6, 2024 EX-99.4

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO SHAREHOLDERS

Exhibit 99.4 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO SHAREHOLDERS Gerdau S.A. (B3: GGBR / NYSE: GGB) announces to its shareholders and the general market that it will initiate a feasibility analysis for a potential investment for the construction of a greenfield unit in Mexico, dedicated to the production of special steels (SQB), with an es

May 6, 2024 6-K

U.S. 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 Dated May 3, 2024 Commission File Number 1-14878 GERDAU S.A. (Transla

U.S. 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 Dated May 3, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal exec

May 6, 2024 EX-99.2

GERDAU S.A. Corporate Taxpayer ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.2 GERDAU S.A. Corporate Taxpayer ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”) announces that the Board of Directors approved, on this date, its 17th issuance of unsecured debentures, not convertible into shares, in a single series, in the amount of R$1,500,000,000.00 (“Debentures” and “Issuance”, respec

May 3, 2024 6-K

U.S. 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 Dated May 2, 2024 Commission File Number 1-14878 GERDAU S.A. (Transla

U.S. 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 Dated May 2, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal exec

May 3, 2024 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of March 31, 2024 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of March 31, 2024 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note March 31, 2024 December 31, 2023 CURRENT ASSETS Cash and cash equivalents 4 3,743,123 3,005,645 Short-term investments 4 2,198,040 2,338,097 Trade accounts receivable 5 5,481,606 4,875,394 Inventories 6 16,04

April 17, 2024 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 material fact INCREASE IN CAPITAL WITH SHARES BONUS

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 material fact INCREASE IN CAPITAL WITH SHARES BONUS Gerdau S.A. (B3: GGBR / NYSE: GGB), announces to its stockholders and the general market that the Extraordinary General Meeting, held on this date, has resolved to increase the Company’s capital to R$ 24,347,290,800.00 through the capitalization of its reser

April 17, 2024 6-K

U.S. 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 Dated April 17, 2024 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated April 17, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

April 17, 2024 EX-99.2

GERDAU S.A. Corporate Taxpayer ID (CNPJ/MF) 33.611.500/0001-19 Company Registry (NIRE) 35300520696 NOTICE TO SHAREHOLDERS CAPITAL STOCK INCREASE BY CAPITALIZING PART OF THE BALANCE OF PROFIT RESERVE ACCOUNT – INVESTMENTS RESERVE AND WORKING CAPITAL R

Exhibit 99.2 GERDAU S.A. Corporate Taxpayer ID (CNPJ/MF) 33.611.500/0001-19 Company Registry (NIRE) 35300520696 NOTICE TO SHAREHOLDERS CAPITAL STOCK INCREASE BY CAPITALIZING PART OF THE BALANCE OF PROFIT RESERVE ACCOUNT – INVESTMENTS RESERVE AND WORKING CAPITAL RESOLVED BY EXTRAORDINARY GENERAL MEETING HELD ON APRIL 16, 2024 (EXHIBIT C of CVM Resolution No. 81/22) 1.        Inform the increase amo

March 28, 2024 EX-12.1

Gustavo Werneck da Cunha

EXHIBIT 12.01 CERTIFICATION I, Gustavo Werneck da Cunha, certify that: 1.I have reviewed this annual report on Form 20-F of Gerdau S.A.; 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

March 28, 2024 EX-1.1

GERDAU S.A. CNPJ nº 33.611.500/0001-19. NIRE Nº 35300520696 Public Held Company.

EXHIBIT 1.01 BYLAWS OF GERDAU S.A. GERDAU S.A. CNPJ nº 33.611.500/0001-19. NIRE Nº 35300520696 Public Held Company. BYLAWS CHAPTER I. HEADQUARTERS, PURPOSES AND DURATION Art. 1. GERDAU S.A., with headquarters and jurisdiction in the City of São Paulo, State of São Paulo, at Avenida Doutora Ruth Cardoso, 8.501, 8th floor, Conjunto 2, Bairro Pinheiros, CEP 05425-070, will be ruled by these Bylaws an

March 28, 2024 EX-13.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

EXHIBIT 13.01 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE U.S. SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Gerdau S.A. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2023, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, Gustavo Werneck da Cunha, Chief Executiv

March 28, 2024 EX-12.2

Rafael Dorneles Japur

EXHIBIT 12.02 CERTIFICATION I, Rafael Dorneles Japur, certify that: 1.I have reviewed this annual report on Form 20-F of Gerdau S.A.; 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

March 28, 2024 EX-14.1

ACKNOWLEDGEMENT AND AGREEMENT TO THE CLAWBACK POLICY OF GERDAU S.A.

EXHIBIT 14.01 CLAWBACK POLICY I.PURPOSE This Clawback Policy describes the circumstances under which Covered Persons of Gerdau S.A. and any of its direct or indirect subsidiaries (collectively, the “Company”) will be required to repay or return Erroneously-Awarded Compensation to the Company. Each Covered Person of the Company shall sign an Acknowledgement and Agreement to the Clawback Policy in t

March 28, 2024 EX-14.2

SECURITIES TRADING POLICY

EXHIBIT 14.02 SECURITIES TRADING POLICY 1.Objectives 1.1.The objective of this Securities Trading Policy is to regulate transactions in the Securities (a) by establishing the applicable conduct, guidelines and restrictions, in an orderly way and within the parameters established by law and the other policies of the Company; and (b) ensuring transparency in transactions in the Securities to avoid t

March 28, 2024 EX-13.2

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350

EXHIBIT 13.02 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE U.S. SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Gerdau S.A. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2023, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, Rafael Dorneles Japur, Chief Financial Of

March 28, 2024 20-F

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 ☐ 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 THE SECURIT

March 15, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Gerdau” or “Company”), in addition to the Material Facts released on January 17, 2024, and February 1, 2024, informs its shareholders and the market in general that, on this date, after fulfillment the corresponding precedent conditions, the divest

March 15, 2024 6-K

U.S. 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 Dated March 15, 2024 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated March 15, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

February 21, 2024 6-K

U.S. 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 Dated February 21, 2024 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated February 21, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

February 21, 2024 EX-99.2

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.2 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”) Boards of Directors approved, on February 20, 2024, the pay

February 21, 2024 EX-99.1

São Paulo, February 20, 2024 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the fourth quarter of 2023. The consolidated financial statements of the Company are presented in Brazilian reais (R$), in accordance with International Finan

Exhibit 99.1 This content is Confidential. GERDAU S.A. QUARTERLY RESULTS 4Q23 CLICK HERE RI.GERDAU.COM São Paulo, February 20, 2024 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the fourth quarter of 2023. The consolidated financial statements of the Company are presented in Brazilian reais (R$), in accordance with International Financial Reporting Standards (IFRS) and the account

February 21, 2024 EX-99.3

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Company Registry (NIRE): 35300520696

Exhibit 99.3 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Corporate Tax ID (CNPJ/MF): 92.690.783/0001-09 Company Registry (NIRE): 35300520751 MATERIAL FACT Investment Plan GERDAU S.A. (B3: GGBR / NYSE: GGB) and Metalúrgica Gerdau S.A. (B3: GOAU) (jointly “Companies”), hereby inform its shareholders and the market in general

February 16, 2024 6-K

U.S. 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 Dated February 16, 2024 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated February 16, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

February 16, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”) informs to its shareholders and the market in general that, in addition to the Material Fact released on December 28, 2023, the request to delist the Company’s shares traded on Latin American Securities Market (“Latibex”) has been granted

February 2, 2024 6-K

U.S. 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 Dated February 2, 2024 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated February 2, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

February 2, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Gerdau” or “Company”), in addition to the Material Fact released on January 17, 2024, informs its shareholders and the market in general that, on February 1st, 2024, after fulfillment of the corresponding conditions precedent, the divestment of its

January 18, 2024 6-K

U.S. 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 Dated January 18, 2024 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated January 18, 2024 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

January 18, 2024 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Gerdau” or “Company”) hereby informs its shareholders and the market in general that, on January 17, 2024, it entered into definitive binding agreements to divest the totality of its 49.85% equity interest of the joint venture Gerdau Diaco S.A. (an

December 29, 2023 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”) informs to its shareholders and the market in general that, on December 27th, a formal request has been submitted to the Latin American Securities Market (“Latibex”) to initiate the necessary procedures for the delisting of XGGB shares, currently tr

December 29, 2023 6-K

U.S. 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 Dated December 29, 2023 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated December 29, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

November 13, 2023 EX-99.2

GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 Publicly Held Company

Exhibit 99.2 GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 Publicly Held Company MINUTES OF THE BOARD OF DIRECTORS MEETING HELD ON NOVEMBER 6, 2023, AT 8:35 A.M., AT THE REGISTERED OFFICE LOCATED AT AVENIDA DOUTORA RUTH CARDOSO, 8.501, 8º ANDAR, CONJUNTO 2, PINHEIROS, IN THE CITY AND STATE OF SÃO PAULO. 1. The meeting was attended by all the memb

November 13, 2023 6-K

U.S. 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 Dated November 13, 2023 Commission File Number 1-14878 GERDAU S.A. (T

U.S. 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 Dated November 13, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principa

November 13, 2023 EX-99.1

GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 Publicly Held Company

Exhibit 99.1 GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 Publicly Held Company MINUTES OF THE BOARD OF DIRECTORS MEETING HELD ON NOVEMBER 6, 2023, AT 9:40 A.M., AT THE REGISTERED OFFICE LOCATED AT AVENIDA DOUTORA RUTH CARDOSO, 8.501, 8º ANDAR, CONJUNTO 2, PINHEIROS, IN THE CITY AND STATE OF SÃO PAULO. 1. The meeting was attended by all the dire

November 8, 2023 EX-99.1

This content is Confidential. This content is Public. GERDAU S.A. QUARTERLY 3Q23 RESULTS CLICK HERE to access the videoconference RI.GERDAU.COM Videoconference November, 7 (wednesday) 12:00 p.m.BRT | 10:00 a.m. NY Hot Roll Coil Capacity Expansion Our

Exhibit 99.1 This content is Confidential. This content is Public. GERDAU S.A. QUARTERLY 3Q23 RESULTS CLICK HERE to access the videoconference RI.GERDAU.COM Videoconference November, 7 (wednesday) 12:00 p.m.BRT | 10:00 a.m. NY Hot Roll Coil Capacity Expansion Ouro Branco Plant (MG) . 2 São Paulo, November 6, 2023 - Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the third quarter of 2

November 8, 2023 EX-99.2

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.2 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”) Boards of Directors approved, on November 06, 2023, the pay

November 8, 2023 6-K

U.S. 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 Dated November 7, 2023 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated November 7, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

November 6, 2023 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of September 30, 2023 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of September 30, 2023 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note September 30, 2023 December 31, 2022 CURRENT ASSETS Cash and cash equivalents 4 2,914,529 2,475,863 Short-term investments 4 3,088,139 2,959,135 Trade accounts receivable 5 5,738,421 4,999,004 Inventories

November 6, 2023 6-K

U.S. 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 Dated November 6, 2023 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated November 6, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

November 6, 2023 6-K

U.S. 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 Dated November 6, 2023 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated November 6, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

November 6, 2023 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Company”), hereby informs the market in general that the acquisition of shares of its own issue (“Buyback Program”), disclosed by Material Fact on May 5, 2022, was concluded on this date. During its term, 44,464,000 preferred shares (GGBR4) were acquired at a

October 11, 2023 6-K

U.S. 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 Dated October 11, 2023 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated October 11, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

October 11, 2023 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) (“Company”) in addition to the Material Facts published on November 25th , 2022 and March 15th, 2023, announces to its shareholders and the market in general that Newave Energia S.A., a company in which Gerdau holds an indirect stake of 33.33% (“Newave E

October 5, 2023 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Company Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Corporate Tax ID (CNPJ/MF): 92.690.783/0001-09 Company Registry (NIRE): 35300520751 MATERIAL FACT Gerdau S.A. (B3: GGBR / NYSE: GGB) and Metalúrgica Gerdau S.A. (B3: GOAU) (jointly, “Companies”), in accordance with the CVM Resolution n.º 44, from August 23, 2021, her

October 5, 2023 6-K

U.S. 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 Dated October 5, 2023 Commission File Number 1-14878 GERDAU S.A. (Tra

U.S. 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 Dated October 5, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

August 15, 2023 6-K

U.S. 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 Dated August 14, 2023 Commission File Number 1-14878 GERDAU S.A. (Tra

U.S. 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 Dated August 14, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

August 15, 2023 EX-99.1

GERDAU S.A. Tax ID (CNPJ/MF) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/MF) 33.611.500/0001-19 Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Tax ID (CNPJ/MF) 92.690.783/0001-09 Registry (NIRE): 35300520751 MATERIAL FACT Gerdau S.A. (B3: GGBR / NYSE: GGB) and Metalúrgica Gerdau S.A. (B3: GOAU) (jointly the “Companies”) hereby inform their shareholders and the market in general that, in order to promote the best environment f

August 9, 2023 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 material fact Gerdau announces certification of iron ore reserves in Minas Gerais

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 material fact Gerdau announces certification of iron ore reserves in Minas Gerais Gerdau S.A. (B3: GGBR / NYSE: GGB) hereby informs its shareholders and the general market that the independent certifier SRK Consulting has prepared the certification report for the iron ore reserves at the mine located in Migue

August 9, 2023 EX-99.2

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.2 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”) Boards of Directors approved, on August 08, 2023, the payme

August 9, 2023 6-K

U.S. 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 Dated August 9, 2023 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated August 9, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

August 9, 2023 EX-99.1

This content is This content is Public. Confidential. = DRY STACKING Miguel Burnier - MG GERDAU S.A. QUARTERLY RESULTS 2Q23 Videoconference August 9 (Wednesday) 12:00 p.m. BRT |11:00 a.m. NY CLICK HERE to access the videoconference RI.GERDAU.COM 2 Sã

Exhibit 99.1 This content is This content is Public. Confidential. = DRY STACKING Miguel Burnier - MG GERDAU S.A. QUARTERLY RESULTS 2Q23 Videoconference August 9 (Wednesday) 12:00 p.m. BRT |11:00 a.m. NY CLICK HERE to access the videoconference RI.GERDAU.COM 2 São Paulo, August 8, 2023 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the second quarter of 2023. The consolidated finan

August 9, 2023 6-K

U.S. 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 Dated August 9, 2023 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated August 9, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

August 8, 2023 6-K

U.S. 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 Dated August 8, 2023 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated August 8, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

August 8, 2023 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of June 30, 2023 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of June 30, 2023 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note June 30, 2023 December 31, 2022 CURRENT ASSETS Cash and cash equivalents 4 2,556,042 2,475,863 Short-term investments 4 1,628,600 2,959,135 Trade accounts receivable 5 5,593,428 4,999,004 Inventories 6 16,980,

May 30, 2023 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT GERDAU S.A. (Exact name of Registrant as specified in its charter) Federative Republic of Brazil 1-14878 n/a (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) Av. Doutora Ruth Cardoso 8501 / 8th floor São Paulo, São Pa

May 4, 2023 EX-99.3

GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 Publicly Held Company MINUTES OF THE ANNUAL AND EXTRAORDINARY SHAREHOLDERS MEETINGS HELD ON APRIL 17, 2023

Exhibit 99.3 GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 Publicly Held Company MINUTES OF THE ANNUAL AND EXTRAORDINARY SHAREHOLDERS MEETINGS HELD ON APRIL 17, 2023 1. The Annual and Extraordinary Shareholders Meetings (“Shareholders Meetings”) of Gerdau S.A. (“Company”) were held on April 17, 2023, at 2 p.m., exclusively digitally, pursuant to

May 4, 2023 6-K

U.S. 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 Dated May 4, 2023 Commission File Number 1-14878 GERDAU S.A. (Transla

U.S. 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 Dated May 4, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal exec

May 4, 2023 EX-99.1

2 2 This content is Confidential. São Paulo, May 3, 2023 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the first quarter of 2023. The consolidated financial statements of the Company are presented in Brazilian real (R$), in accordanc

Exhibit 99.1 ThisThis content is Public. content is Confidential. DRY STACKING PLANT Miguel Burnier – Minas Gerais GERDAU S.A. QUARTERLY RESULTS 1Q23 Videoconference May 3 (Wednesday) 2 p.m. BRT | 1:00 p.m. NY CLICK HERE to access the videoconference RI.GERDAU.COM 2 2 This content is Confidential. São Paulo, May 3, 2023 – Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the first quart

May 4, 2023 EX-99.2

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.2 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS AND INTEREST ON EQUITY We would like to inform our Shareholders that Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”) Boards of Directors approved, on May

May 3, 2023 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of March 31, 2023 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of March 31, 2023 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note March 31, 2023 December 31, 2022 CURRENT ASSETS Cash and cash equivalents 4 2,581,882 2,475,863 Short-term investments 4 3,243,455 2,959,135 Trade accounts receivable 5 5,999,188 4,999,004 Inventories 6 17,18

May 3, 2023 6-K

U.S. 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 Dated May 3, 2023 Commission File Number 1-14878 GERDAU S.A. (Transla

U.S. 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 Dated May 3, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal exec

March 31, 2023 EX-12.02

Certification of the Chief Financial Officer under Item 15±

EXHIBIT 12.02 CERTIFICATION I, Rafael Dorneles Japur, certify that: 1. I have reviewed this annual report on Form 20-F of Gerdau S.A.; 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 t

March 31, 2023 EX-12.01

Certification of the Chief Executive Officer under Item 15±

EXHIBIT 12.01 CERTIFICATION I, Gustavo Werneck da Cunha, certify that: 1. I have reviewed this annual report on Form 20-F of Gerdau S.A.; 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 respec

March 31, 2023 EX-13.02

Certification pursuant to 18 U.S.C. Section 1350 †±

EXHIBIT 13.02 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE U.S. SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Gerdau S.A. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2022, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, Rafael Dorneles Japur, Chief Financial Of

March 31, 2023 EX-23.02

Consent of KPMG Auditores Independentes Ltda.±

EXHIBIT 23.02 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We consent to the incorporation by reference in the registration statements (No. 333-171217 and No. 333-179182) on Form S-8 of our report dated March 30, 2022, with respect to the consolidated financial statements of Gerdau S.A. /s/ KPMG Auditores Independentes Ltda. Porto Alegre/RS March 31, 2023

March 31, 2023 20-F

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 ☐ 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 THE SECURIT

March 31, 2023 EX-13.01

Certification pursuant to 18 U.S.C. Section 1350 †±

EXHIBIT 13.01 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE U.S. SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Gerdau S.A. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2022, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, Gustavo Werneck da Cunha, Chief Executiv

March 31, 2023 EX-23.01

Consent of PricewaterhouseCoopers Auditores Independentes Ltda.±

EXHIBIT 23.01 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (File No. 333-171217 and 333-179182) of Gerdau S.A. of our report dated March 31, 2023 relating to the consolidated financial statements and the effectiveness of internal control over financial reporting, which appears in this Form 20

March 17, 2023 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 material fact

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 material fact Gerdau S.A. (B3: GGBR / NYSE: GGB), ("Company") in addition to the Material Fact disclosed on November 25, 2022, hereby informs its shareholders and the market in general that the transaction between its subsidiary Gerdau Next S.A. (“Gerdau Next”) and Fundo Newave Energia I Advisory Fundo de Inv

March 17, 2023 6-K

U.S. 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 Dated March 16, 2023 Commission File Number 1-14878 GERDAU S.A. (Tran

U.S. 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 Dated March 16, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal e

March 2, 2023 EX-99.3

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO SHAREHOLDERS CAPITAL INCREASE THROUGH CAPITALIZATION OF REVENUE RESERVES WITH 5% BONUS SHARES AS RESOLVED BY THE BOARD OF DIRECTORS ON FEBRUARY 28, 2023 (ATTACHMEN

Exhibit 99.3 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO SHAREHOLDERS CAPITAL INCREASE THROUGH CAPITALIZATION OF REVENUE RESERVES WITH 5% BONUS SHARES AS RESOLVED BY THE BOARD OF DIRECTORS ON FEBRUARY 28, 2023 (ATTACHMENT C of CVM Resolution 81/22) 1. Inform the amount of the increase and new capital Increase of capital by R$ 966,162,334.00, from R$ 19,32

March 2, 2023 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Company Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Corporate Tax ID (CNPJ/MF): 92.690.783/0001-09 Company Registry (NIRE): 35300520751 MATERIAL FACT Gerdau S.A. (B3: GGBR / NYSE: GGB) and Metalúrgica Gerdau S.A. (B3: GOAU) (jointly “Companies”) hereby inform their shareholders and the market of the Management’s proje

March 2, 2023 EX-99.4

This content is Confidential. 2 São Paulo, March 1, 2023 – Gerdau S.A. (B3: / NYSE: GGB) announces its results for the fourth quarter and year of 2022. The consolidated financial statements of the Company are presented in Brazilian real (R$), in acco

Exhibit 99.4 This content is Confidential. SOLAR AND WIND FARM They integrateGerdau's energy matrix GERDAU S.A. QUARTERLY RESULTS 4Q22 Videoconference March 1 (Wednesday) 2 p.m. BRT | 12 p.m. NY CLICK HERE to access the videoconference RI.GERDAU.COM This content is Confidential. 2 São Paulo, March 1, 2023 – Gerdau S.A. (B3: / NYSE: GGB) announces its results for the fourth quarter and year of 2022

March 2, 2023 EX-99.5

MANAGEMENT REPORT - 2022 This content is Public. This content is This content is Public. Public. 3 Dear Shareholders, The year 2022 will go down as one of the best in Gerdau's history, as a result of the consolidation experienced by the Company in re

Exhibit 99.5 This content is Public. PALCO MUNDO FEITO COM AÇO GERDAU Rock In Rio Brasil 2022 GERDAU S.A. MANAGEMENT REPORT 2022 RI.GERDAU.COM MANAGEMENT REPORT - 2022 This content is Public. This content is This content is Public. Public. 3 Dear Shareholders, The year 2022 will go down as one of the best in Gerdau's history, as a result of the consolidation experienced by the Company in recent ye

March 2, 2023 EX-99.2

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 material fact

Exhibit 99.2 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 material fact Gerdau S.A. (B3: GGBR / NYSE: GGB), in accordance at CVM Resolution 44, from August 23, 2021, announces to its stockholders and the general market that the Company’s Board of Directors, at a meeting held on this date, has resolved to increase the Company’s capital to R$ 20.289.409.000,00 through

March 2, 2023 6-K

U.S. 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 Dated March 2, 2023 Commission File Number 1-14878 GERDAU S.A. (Trans

U.S. 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 Dated March 2, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal ex

February 7, 2023 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 material fact Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”), pursuant to article 157, paragraph 4 of Law 6,404/76 and CVM Resolution 44/2021, as amended, hereby inform their shareholders and the

February 7, 2023 6-K

U.S. 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 Dated February 7, 2023 Commission File Number 1-14878 GERDAU S.A. (Tr

U.S. 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 Dated February 7, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 05425-070 (Address of principal

January 27, 2023 EX-99.1

GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 Publicly Held Company

Exhibit 99.1 GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 Publicly Held Company MINUTES OF THE BOARD OF DIRECTORS MEETING HELD AT THE REGISTERED OFFICE LOCATED AT AVENIDA DOUTORA RUTH CARDOSO, 8.501, 8º ANDAR, CONJUNTO 2, PINHEIROS, IN THE CITY AND STATE OF SÃO PAULO, ON JANUARY 17, 2023, AT 10:00 A.M. 1. All directors participated in the meetin

January 27, 2023 6-K

U.S. 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 Dated January 27, 2023 Commission File Number 1-14878 GERDAU S.A. (Tr

6-K 1 tm234618d16k.htm FORM 6-K U.S. 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 Dated January 27, 2023 Commission File Number 1-14878 GERDAU S.A. (Translation of Registrant’s Name into English) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP

December 8, 2022 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METALÚRGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE to shareholders Gerdau S.A. and Metalúrgica Gerdau S.A. (collectively, the “Companies”), in compliance with Circular Letter No. 7/2020-CVM/SEP, invites you to its 2022 Annual Public Meeting with Analysts and Invest

December 8, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 8, 2022 Commission File Number 1-14878 GERDAU S.A. (Ex

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 8, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant’s Name) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP

November 28, 2022 EX-99.1

GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.1 GERDAU S.A. Corporate Taxpayer ID (CNPJ): 33.611.500/0001-19 Company Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (“Company”) hereby informs its shareholders and the market that on this date, its subsidiary Gerdau Next S.A. (“Gerdau Next”) and Newave Energia I Advisory Fundo de Investimento em Participações Multiestratégia (“NW Capital”), as investors,

November 28, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 25, 2022 Commission File Number 1-14878 GERDAU S.A. (E

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 25, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant’s Name) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CE

November 16, 2022 EX-99.2

GERDAU S.A. CNPJ No. 33.611.500/0001-19 NIRE 35300520696 Publicly Traded Company

Exhibit 99.2 GERDAU S.A. CNPJ No. 33.611.500/0001-19 NIRE 35300520696 Publicly Traded Company MINUTES OF THE MEETING OF THE BOARD OF DIRECTORS HELD AT THE HEADQUARTERS, AT AVENIDA DOUTORA RUTH CARDOSO, 8501, 8? ANDAR, CONJUNTO 2, PINHEIROS, S?O PAULO, SP, BRAZIL, AT 9:40 AM, on NOVEMBER 8, 2022. 1. The meeting was attended by all the members of the Board of Directors, pursuant to the Internal Regu

November 16, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 16, 2022 Commission File Number 1-14878 GERDAU S.A. (E

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 16, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CE

November 16, 2022 EX-99.1

GERDAU S.A. CNPJ No. 33.611.500/0001-19 NIRE 35300520696 Publicly Traded Company

Exhibit 99.1 GERDAU S.A. CNPJ No. 33.611.500/0001-19 NIRE 35300520696 Publicly Traded Company MINUTES OF THE MEETING OF THE EXECUTIVE BOARD HELD AT THE HEADQUARTERS, AT AVENIDA DOUTORA RUTH CARDOSO, 8501, 8? ANDAR, CONJUNTO 2, PINHEIROS, S?O PAULO, SP, BRAZIL, AT 4:30 PM, ON NOVEMBER 7, 2022. 1. The meeting was attended by all members of the Executive Board of Gerdau S.A. (?Company?), chaired by G

November 10, 2022 EX-99.1

GERDAU S.A. CNPJ nº 33.611.500/0001-19 NIRE 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. CNPJ n? 33.611.500/0001-19 NIRE 35300520696 NOTICE TO THE MARKET Gerdau S.A. (B3: GGBR / NYSE: GGB) and Metal?rgica Gerdau S.A. (B3: GOAU) (collectively, the ?Companies?), making reference to the Material Fact published by Gerdau S.A. on June 13, 2018, informs that on November 8, 2022, the First Panel of the Superior Court of Justice unanimously granted the Special Appeal

November 10, 2022 EX-99.2

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.2 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METAL?RGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS AND INTEREST ON EQUITY We would like to inform our Shareholders that Gerdau S.A. and Metal?rgica Gerdau S.A. (collectively, the ?Companies?) Boards of Directors approved, on Nov

November 10, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 10, 2022 Commission File Number 1-14878 GERDAU S.A. (E

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 10, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CE

November 10, 2022 EX-99.1

QUARTERLY RESULTS - 3Q22

Exhibit 99.1 S?o Paulo, November 9, 2022 ? Gerdau S.A. (B3: GGBR / NYSE: GGB): announces its results for the third quarter of 2022. The consolidated financial statements of the Company are presented in Brazilian real (R$), in accordance with International Financial Reporting Standards (IFRS) and the accounting practices adopted in Brazil. The information in this report does not include the data of

November 10, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 10, 2022 Commission File Number 1-14878 GERDAU S.A. (E

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 10, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CE

November 9, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 9, 2022 Commission File Number 1-14878 GERDAU S.A. (Ex

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 9, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CEP

November 9, 2022 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of September 30, 2022 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of September 30, 2022 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note September 30, 2022 December 31, 2021 CURRENT ASSETS Cash and cash equivalents 4 6,185,651 4,160,654 Short-term investments 4 2,404,480 2,626,212 Trade accounts receivable 5 6,664,613 5,414,075 Inventories

November 7, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 7, 2022 Commission File Number 1-14878 GERDAU S.A. (Ex

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 7, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CEP

November 7, 2022 EX-99.1

GERDAU S.A. Corporate Tax ID (CNPJ/MF): Registry (NIRE): 35300520696 NOTICE TO THE MARKET

Exhibit 99.1 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET GERDAU S.A. (B3: GGBR / NYSE: GGB) following the Notice to the Market published on September 1, 2022, informs its shareholders and the market in general that, on this date, upon compliance with the applicable precedent conditions, including the approval by the competitor author

August 4, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated August 4, 2022 Commission File Number 1-14878 GERDAU S.A. (Exac

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated August 4, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CEP 0

August 4, 2022 EX-99.1

SALES SEGMENTATION PER BD

Exhibit 99.1 CONSOLIDATED RESULTS OPERATIONAL PERFORMANCE PRODUCTION & SHIPMENTS CONSOLIDATED 2Q22 1Q22 ? 2Q21 ? 6M22 6M21 ? Volumes (1,000 tonnes) Production of crude steel 3,429 3,406 0.7% 3,448 -0.6% 6,835 6,599 3.6% Shipments of steel 3,245 3,055 6.2% 3,216 0.9% 6,300 6,304 -0.1% In the quarter, crude steel production remained in line with 1Q22 and 2Q21, and in the first half, steel production

August 4, 2022 EX-99.2

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.2 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METAL?RGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE TO SHAREHOLDERS PAYMENT OF DIVIDENDS We would like to inform our Shareholders that Gerdau S.A. and Metal?rgica Gerdau S.A. (collectively, the ?Companies?) Boards of Directors approved, on August 02, 2022, the payme

August 3, 2022 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of June 30, 2022 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of June 30, 2022 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note June 30, 2022 December 31, 2021 CURRENT ASSETS Cash and cash equivalents 4 5,776,753 4,160,654 Short-term investments 4 1,977,982 2,626,212 Trade accounts receivable 5 7,261,198 5,414,075 Inventories 6 18,464,

August 3, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated August 3, 2022 Commission File Number 1-14878 GERDAU S.A. (Exac

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated August 3, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CEP 0

June 23, 2022 CORRESP

***

June 23, 2022 Claire Erlanger and Andrew Blume Division of Corporation Finance Office of Manufacturing United States Securities and Exchange Commission Washington D.

May 31, 2022 SD

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM SD SPECIALIZED DISCLOSURE REPORT GERDAU S.A. (Exact name of Registrant as specified in its charter) Federative Republic of Brazil 1-14878 n/a (State or other jurisdiction of incorporation or organization) (Commission File Number) (IRS Employer Identification No.) Av. Doutora Ruth Cardoso 8501 / 8th floor S?o Paulo, S?o Pa

May 6, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated May 6, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact N

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated May 6, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CEP 0542

May 6, 2022 EX-99.1

EBITDA (R$ million) & EBITDA Margin (%)

Exhibit 99.1 S?o Paulo, May 5, 2022 ? Gerdau S.A. (B3: GGBR / NYSE: GGB) announces its results for the first quarter of 2022. The consolidated financial statements of the Company are presented in Brazilian real (R$), in accordance with International Financial Reporting Standards (IFRS) and the accounting practices adopted in Brazil. The information in this report does not include the data of assoc

May 6, 2022 EX-99.2

GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT

Exhibit 99.2 GERDAU S.A. Corporate Tax ID (CNPJ/MF): 33.611.500/0001-19 Registry (NIRE): 35300520696 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (?Company?) informs that its Board of Directors, in a meeting held on May 4, 2022, in compliance with its Bylaws and with Resolution 77, issued by the Securities and Exchange Commission of Brazil (CVM) on March 29, 2022, approved the program to buy b

May 5, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated May 5, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact N

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated May 5, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant’s Name) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP 0542

May 5, 2022 EX-99.1

GERDAU S.A. NOTES TO THE CONDENSED CONSOLIDATED INTERIM FINANCIAL STATEMENTS as of March 31, 2022 (In thousands of Brazilian Reais – R$, unless otherwise stated)

Exhibit 99.1 GERDAU S.A. Condensed consolidated interim financial statements as of March 31, 2022 GERDAU S.A. CONSOLIDATED BALANCE SHEETS In thousands of Brazilian reais (R$) (Unaudited) Note March 31, 2022 December 31, 2021 CURRENT ASSETS Cash and cash equivalents 4 4,895,161 4,160,654 Short-term investments 4 2,695,636 2,626,212 Trade accounts receivable 5 6,756,022 5,414,075 Inventories 6 16,31

March 31, 2022 EX-12.02

Certification of the Chief Financial Officer under Item 15±

EXHIBIT 12.02 CERTIFICATION I, Rafael Dorneles Japur, certify that: 1. I have reviewed this annual report on Form 20-F of Gerdau S.A.; 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 t

March 31, 2022 EX-15.01

Change in Registrant’s Certifying Accountant±

EXHIBIT 15.01 March 30, 2022 Securities and Exchange Commission Washington, D.C. 20549 Ladies and Gentlemen: We are currently principal accountants for Gerdau S.A. and, under the date of March 30, 2022, we reported on the consolidated financial statements of Gerdau S.A. as of and for the years ended December 31, 2021 and 2020 and the effectiveness of internal control over financial reporting as of

March 31, 2022 EX-13.01

Certification pursuant to 18 U.S.C. Section 1350 †±

EXHIBIT 13.01 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE U.S. SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Gerdau S.A. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2021, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, Gustavo Werneck da Cunha, Chief Executiv

March 31, 2022 EX-11.01

Code of Ethics ±

EXHIBIT 11.01 GERDAU PRINCIPLES Our principles talk about how we work and the future we are building. It defines our way of being and doing, so they reflect the main features of our culture. Gerdau's Code of Ethics and Conduct must guide the organization and represent what we believe and value. Introduction For Gerdau, DO WHAT IS RIGHT is a non-negotiable principle. It is from this position that w

March 31, 2022 EX-4.3

Long-term incentive plan******

EXHIBIT 4.03 GERDAU S.A. CNPJ n? 33.611.500/0001-19 NIRE 35300520696 Public Company LONG-TERM INCENTIVE PLAN Definitions. The expressions listed below used throughout this document have the following meanings: A. ?SHARE or SHARES? means book-entry preferred shares with no par value issued by the COMPANY that will be granted by the COMPANY or by the GRANTING GERDAU GROUP ENTITY to the EXECUTIVES, u

March 31, 2022 20-F

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

Table of Contents f fv ? UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 31, 2022 EX-23.01

Consent of KPMG Auditores Independentes±

EXHIBIT 23.01 CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM The Board of Directors of Gerdau S.A. We consent to the incorporation by reference in the registration statements (No. 333-171217 and No. 333-179182) on Form S-8 of our reports dated March 30, 2022, with respect to the consolidated financial statements of Gerdau S.A. and the effectiveness of internal control over financial repo

March 31, 2022 EX-13.02

Certification pursuant to 18 U.S.C. Section 1350 †±

EXHIBIT 13.02 CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO SECTION 906 OF THE U.S. SARBANES-OXLEY ACT OF 2002 In connection with the Annual Report of Gerdau S.A. (the “Company”) on Form 20-F for the fiscal year ended December 31, 2021, as filed with the U.S. Securities and Exchange Commission on the date hereof (the “Report”), I, Rafael Dorneles Japur, Chief Financial Of

March 31, 2022 EX-12.01

Certification of the Chief Executive Officer under Item 15±

EXHIBIT 12.01 CERTIFICATION I, Gustavo Werneck da Cunha, certify that: 1. I have reviewed this annual report on Form 20-F of Gerdau S.A.; 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 respec

February 23, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated February 23, 2022 Commission File Number 1-14878 GERDAU S.A. (E

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated February 23, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CE

February 23, 2022 EX-99.2

EBITDA (R$ million) & EBITDA Margin

Exhibit 99.2 Dear Shareholders: In 2021, Gerdau delivered its best results ever in its over-100-year history, reflecting its capacity to innovate and keep meeting all the needs of its markets by responding quickly with solutions customized to clients? needs. According to the World Steel Association (worldsteel), steel production came to 1.9 billion tonnes in 2021, up 3.7% from 2020. The highlight

February 23, 2022 EX-99.1

EBITDA (R$ million) & EBITDA Margin (%)

Exhibit 99.1 S?o Paulo, February 23, 2022 ? Gerdau S.A. (B3: / NYSE: GGB) announces its results for the fourth quarter of 2021. The consolidated financial statements of the Company are presented in Brazilian real (R$), in accordance with International Financial Reporting Standards (IFRS) and the accounting practices adopted in Brazil. The information in this report does not include the data of ass

February 1, 2022 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated February 1, 2022 Commission File Number 1-14878 GERDAU S.A. (Ex

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated February 1, 2022 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CEP

February 1, 2022 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METAL?RGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 MATERIAL FACT GERDAU S.A. (B3: GGBR / NYSE: GGB) (?Company?) hereby announces that its Board of Directors has approved its climate change strategy, as well as the target to reduce its emissions to 0.83 tonne of CO2e per t

December 23, 2021 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METAL?RGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 SEIVA S.A. ? FLORESTAS E IND?STRIAS Tax ID (CNPJ/MF): 87.043.832/0001-73 Registry (NIRE): 35300521781 MATERIAL FACT Gerdau S.A., Metal?rgica Gerdau S.A. and Seiva S.A. ? Florestas e Ind?strias (collectively, the ?Companie

December 23, 2021 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 22, 2021 Commission File Number 1-14878 GERDAU S.A. (E

6-K 1 tm2136196d16k.htm FORM 6-K FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 22, 2021 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant’s Name) Av. Dra. Ruth Cardoso, 8,501 – 8° andar

December 16, 2021 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME): 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME): 33.611.500/0001-19 Registry (NIRE): 35300520696 NOTICE TO THE MARKET Gerdau S.A. (?Company?), in accordance with CVM Resolution 23/2021 (?Resolution?), hereby informs its shareholders and the market that the Board of Directors of the Company approved the engagement of PricewaterhouseCoopers Auditores Independentes (?PwC?) as its independent registered pub

December 16, 2021 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 16, 2021 Commission File Number 1-14878 GERDAU S.A. (E

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 16, 2021 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CE

December 15, 2021 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME) 33.611.500/0001-19 Registry (NIRE): 35300520696 METAL?RGICA GERDAU S.A. Tax ID (CNPJ/ME) 92.690.783/0001-09 Registry (NIRE): 35300520751 SEIVA S.A. ? FLORESTAS E IND?STRIAS Tax ID (CNPJ/ME) 87.043.832/0001-73 Registry (NIRE): 35300521781 NOTICE TO THE MARKET Gerdau S.A., Metal?rgica Gerdau S.A. and Seiva S.A. ? Florestas e Ind?strias (collectively, the ?Co

December 15, 2021 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 14, 2021 Commission File Number 1-14878 GERDAU S.A. (E

6-K 1 tm2135468d16k.htm FORM 6-K FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 14, 2021 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant’s Name) Av. Dra. Ruth Cardoso, 8,501 – 8° andar

December 7, 2021 EX-99.1

GERDAU S.A. ANNOUNCES FINAL RESULTS OF THE CASH TENDER OFFER FOR CERTAIN OF THE OUTSTANDING 4.750% BONDS DUE 2023, 5.893% BONDS DUE 2024 AND 4.875% BONDS DUE 2027

Exhibit 99.1 GERDAU S.A. ANNOUNCES FINAL RESULTS OF THE CASH TENDER OFFER FOR CERTAIN OF THE OUTSTANDING 4.750% BONDS DUE 2023, 5.893% BONDS DUE 2024 AND 4.875% BONDS DUE 2027 S?o Paulo, Brazil, December 6, 2021 ? Gerdau S.A. (Bovespa: GGBR, NYSE: GGB, Latibex: XGGB) (?Gerdau? or the ?Company?) hereby announces the final results of the previously announced offer by the Company to purchase for cash

December 7, 2021 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 7, 2021 Commission File Number 1-14878 GERDAU S.A. (Ex

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 7, 2021 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant’s Name) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP

December 1, 2021 EX-99.1

GERDAU S.A. Tax ID (CNPJ/ME): 33.611.500/0001-19 Registry (NIRE): 35300520696

Exhibit 99.1 GERDAU S.A. Tax ID (CNPJ/ME): 33.611.500/0001-19 Registry (NIRE): 35300520696 METAL?RGICA GERDAU S.A. Tax ID (CNPJ/ME): 92.690.783/0001-09 Registry (NIRE): 35300520751 NOTICE TO THE MARKET Gerdau S.A. and Metal?rgica Gerdau S.A. (jointly, ?Companies?) hereby inform their shareholders and the market that, in connection with the Notice to the Market disclosed on August 19, 2021, the cor

December 1, 2021 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 1, 2021 Commission File Number 1-14878 GERDAU S.A. (Ex

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated December 1, 2021 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant’s Name) Av. Dra. Ruth Cardoso, 8,501 – 8° andar São Paulo, São Paulo - Brazil CEP

November 30, 2021 EX-99.1

GERDAU S.A. ANNOUNCES RESULTS OF EARLY TENDER PERIOD OF THE CASH TENDER OFFER FOR CERTAIN OF THE OUTSTANDING 4.750% BONDS DUE 2023, 5.893% BONDS DUE 2024 AND 4.875% BONDS DUE 2027

Exhibit 99.1 GERDAU S.A. ANNOUNCES RESULTS OF EARLY TENDER PERIOD OF THE CASH TENDER OFFER FOR CERTAIN OF THE OUTSTANDING 4.750% BONDS DUE 2023, 5.893% BONDS DUE 2024 AND 4.875% BONDS DUE 2027 S?o Paulo, Brazil, November 19, 2021 ? Gerdau S.A. (Bovespa: GGBR, NYSE: GGB, Latibex: XGGB) (?Gerdau? or the ?Company?) hereby announces the results of the early tender period under the previously announced

November 30, 2021 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 30, 2021 Commission File Number 1-14878 GERDAU S.A. (E

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 30, 2021 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CE

November 4, 2021 6-K

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 4, 2021 Commission File Number 1-14878 GERDAU S.A. (Ex

FORM 6-K U.S. SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE SECURITIES EXCHANGE ACT OF 1934 Dated November 4, 2021 Commission File Number 1-14878 GERDAU S.A. (Exact Name as Specified in its Charter) N/A (Translation of Registrant?s Name) Av. Dra. Ruth Cardoso, 8,501 ? 8? andar S?o Paulo, S?o Paulo - Brazil CEP

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