Form 6-K GERDAU S.A. For: Dec 19

 

 

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 19, 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 executive offices)

 

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

 

Form 20-F  x           Form 40-F  ¨ 

 

 

 

Exhibit Index

 

Exhibit		Description of Exhibit
99.1		Material Fact – Buyback program conclusion

 

 

SIGNATURES

 

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

 

Date: December 19, 2025

 

	GERDAU S.A.
	By:	/s/ Rafael Dorneles Japur
	Name:	Rafael Dorneles Japur
	Title:	Vice-President and Investor Relations Officer

 

 

ATTACHMENTS / EXHIBITS

EXHIBIT 99.1

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