2025-10-22
The Commission for the Organization and Supervision of Stock Exchange Operations (COSOB) issued Guidelines No. 01-2025 to mandate strict identification and verification procedures for beneficial owners by regulated entities. The document defines beneficial ownership as holding 20% or more of capital or voting rights, or exercising control, and requires enhanced due diligence for high-risk clients and politically exposed persons. It establishes a risk-based approach requiring regulated firms to collect specific data, verify identities through independent sources, and maintain ongoing monitoring to prevent money laundering and terrorist financing.