Companhia de Saneamento Básico do Estado de São Paulo - SABESP has reported the validation of its Regulatory Asset Base (RAB) for 2023 and 2024, with the validated RAB at R$ 78.5 billion for 2023 and R$ 88.0 billion for 2024 as of December 2024. This filing was made on November 25, 2025, and provides essential financial updates for shareholders and the market.