Pampa Energia SaBCBA: PAMP

Redemption of the CB Series 20

· Issued by Pampa Energia SA

Buenos Aires, December 11, 2025. Pampa Energía S.A. ('Pampa' or the 'Company'; NYSE: PAM; ByMA: PAMP) announces that today, Pampa early redeemed the outstanding amount of the CB Series 20 that paid a 6% annual rate and matured on March 2026, for a total of US$60 million.

For more information, please contact:

Gustavo Mariani - CEO

Adolfo Zuberbühler - CFO

Lida Wang - Investor relations and sustainability officer - investor@pampa.com

Josefina Espinosa Paz - PR, press and marketing director - prensa@pampa.com

The Pampa Energía Building
Maipú 1, (C1084ABA), Buenos Aires, Argentina
Phone: +54 (11) 4344 6000

ri.pampa.com