6-K

UNITEDSTATESSECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549

FORM6-K

REPORTOF FOREIGN PRIVATE ISSUER

PURSUANTTO RULE 13a-16 OR 15d-16UNDER THE SECURITIES EXCHANGE ACT OF 1934

Forthe month of March 2023

CommissionFile Number: 1-11176

Group Simec

(Translation of Registrant's name into English)

Av.Lázaro Cardenas 601,

Coloniala Nogalera,

Guadalajara,Jalisco, México 44440

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of

Form 20-F or Form 40-F.

Form 20-F ☒ Form 40-F ☐

EXHIBITINDEX

1

SIGNATURES

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

2

Exhibit 99.1

Grupo Simec Files a Form 20-F/A for the2021 Financial Year

GUADALAJARA, Mexico, March 17, 2023 /PRNewswire/ -- Grupo Simec, S.A.B. de C.V. (NYSE American: SIM) (the “Company”) on March 17, 2023 filed an Amendment No. 1 to the Annual Report on Form 20-F for the year ended December 31, 2021, dated as of May 18, 2022, with the U.S. Securities and Exchange Commission at www.sec.gov (the “Form 20-F/A”). The Company filed the Form 20-F/A solely to amend a risk factor relating to weaknesses in internal controls by removing an inadvertent reference to a material weakness in 2019 and including a cross-reference to Item 8. “Financial Information—Legal Proceedings.” The Form 20-F/A also is available on the investor relations section of the Company’s website at https://gsimec.com.mx/sec-filings.php. Shareholders may request a hard copy of the Form 20-F/A, free of charge, by contacting the Company’s Finance coordinator, Mario Moreno Cortez, by email at mmoreno@gruposimec.com.mx.

About Grupo Simec

Grupo Simec is a diversified manufacturer, processor and distributor of SBQ steel and structural steel products with production and commercial operations in the United States, Mexico and Brazil. Grupo Simec is also an important producer of structural and light structural steel products in Mexico in terms of sales volume. Grupo Simec’s SBQ products are used across a broad range of highly engineered end-user applications, including axles, hubs and crankshafts for automobiles and light trucks, machine tools and off-highway equipment. Its structural steel products are mainly used in the non-residential construction market and other construction applications.