Vista Energy, S.A.B. de C.V. Share Repurchase

On August 12, 2026, Vista Energy, S.A.B. de C.V. repurchased 50,000 Series A shares at a price of Mexican Pesos $1,134.72 per share. These repurchases, totaling approximately Mexican Pesos $56,736,000 excluding fees and taxes, were made in accordance with the approval granted at the general ordinary shareholders' meeting on April 28, 2026. Following these transactions, the total number of Series A shares outstanding is 110,717,402. Additionally, 1,584,351 Series A shares are held in treasury as a result of previous repurchases. The company engaged Citi México Casa de Bolsa, S.A. de C.V. to execute these share repurchases. The filing was made on August 13, 2026, and is reported under Form 6-K.