November 2025 Transportadora de Gas del Sur S.A. Investor Presentation Investor Presentation November 2025 CIESA (Holding Co.) Pampa Energía 50% Sielecki 27.1% Safra 22.9% 53.83% 2 Shareholders and Management Argentine Pension Fund Free Float 25.33% 20.84% Ownership structure Strong sponsorship from shareholders Seasoned management • Pampa Energía is a leading energy company with upstream O&G production providing experienced support. • Sielecki group is a large player in the petrochemical and pharmaceutical ...