Beneficial Ownership of AMX Series B Shares

This filing details the beneficial ownership of Series B Shares of AMERICA MOVIL SAB DE CV/ (AMX) by Patrick Slim Domit. As of March 16, 2026, Patrick Slim Domit directly owns 1,236,591,858 Series B Shares. Additionally, he has indirect ownership through various entities and trusts: 1,139,074 shares through his spouse, 4,891,412 shares through his children, 17,742,515,522 shares via the Control Trust, 10,933,355,873 shares through Control Empresarial Trust, and 196,009,735 shares through Grupo Financiero Inbursa (GFI). The footnotes clarify the nature of these holdings, particularly the control and shared beneficial ownership through trusts and family-related entities. Patrick Slim Domit disclaims pecuniary interest beyond his own stake in these entities.