Cosan CEO Marcelo Martins Steps Down; Strategy VP Guilherme Penin Named Interim

Cosan announced CEO Marcelo Martins will leave, with VP of Strategy Guilherme Penin taking over on an interim basis in January. Martins led the 2025 capitalization and Raízen restructuring, so the transition introduces leadership uncertainty at a key Brazilian conglomerate. The move is a corporate governance change with potential strategic implications, but no immediate market shock is indicated.

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