Form 4 Filing for GERDAU S.A. - Insider Transaction

Mauricio Metz, Executive Vice President of GERDAU S.A., reported a disposition of 1000 preferred shares on April 10, 2026. The transaction occurred at a price of R$4.24 per share, translated from Brazilian reais using the selling rate of R$5.0229 per US$1.00. Following this transaction, Metz holds 42,536 preferred shares directly. The filing also details several grants of Restricted Stock Units (RSUs) with exercise prices ranging from R$3.64 to R$4.14, which are convertible into preferred shares and are set to expire between 2027 and 2029. These RSUs are also held directly.