Gerdau S A : Material Fact - Market Maker

GERDAU S.A.	METALÚRGICA GERDAU S.A.
Tax ID (CNPJ/MF) 33.611.500/0001-19	Tax ID (CNPJ/MF) 92.690.783/0001-09
Registry (NIRE): 35300520696	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 for trading of their shares and in line with the best corporate governance practices, the Companies hired BTG PACTUAL CORRETORA DE TÍTULOS E VALORES MOBILIÁRIOS S.A. ("BTG") as a market maker, starting on August 14, 2023.

The market maker is an agent that commits to maintain buy and sell offers, within certain operating parameters, on a regular and continuous basis during the trading session, promoting the liquidity of securities, facilitating trades and mitigating artificial movements in the share price.

B3 has continuously encouraged companies to have market makers in order to promote trading in their shares and increase liquidity. The Companies' participation in this process reinforces their commitment to investors and to the best negotiation practices.

São Paulo, August 11, 2023.

Rafael Dorneles Japur

Executive Vice President

Investor Relations Director

This content is Public.