Transportadora de Gas del Sur S.A. - Amendment to Credit Rating

On June 11, 2026, S&P Global Ratings upgraded Transportadora de Gas del Sur S.A.’s long-term debt ratings for both local and foreign currency from "B-" to "B". This upgrade follows S&P's revised assessment of Argentina’s transfer and convertibility risk. The company, TGS, is headquartered in Argentina and operates within the energy sector. This filing serves as a notification of the material change in the company's credit rating.