Usiminas Belo Horizonte Rua Prof. José Vieira de Mendonça, 3011 31310-260Belo Horizonte, MG P 55 31 3499-8000F 55 31 3499-8899www.usiminas.com

(Free Translation: For reference only - Original in Portuguese)

USINAS SIDERÚRGICAS DE MINAS GERAIS S.A. - USIMINAS

Publicly-Held Company

CNPJ/MF 60.894.730/0001-05

NIRE 313.000.1360-0

NOTICE TO THE MARKET

Usinas Siderúrgicas de Minas Gerais S.A. - USIMINAS ("Usiminas" or "Company"), in addition to the Notices to the Market disclosed on May 27th and November 28th, 2019, hereby informs its shareholders and the public in general that the amount set for the renovation of the Blast Furnace #3 in Ipatinga Plant ("BF3") was revised due to: (i) expansion of the project's scope; (ii) significant exchange devaluation accumulated since its approval; and (iii) significant increase in the cost of materials and services necessary for its execution. Therefore, the updated renovation amount is now R$ 1,858 billion, to be disbursed by 2023. The BF3 will continue to operate normally until mid-2022,when the renovation will be initiated.

Belo Horizonte, November 26th, 2020

Alberto Ono

Finance and Investors Relations Vice-President Officer

Classificação da informação: Pública

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USIMINAS - Usinas Siderúrgicas de Minas Gerais SA published this content on 26 November 2020 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 27 November 2020 01:04:04 UTC