Pampa Energia SaBCBA: PAMP

Redemption of the 2026 Notes

· Issued by Pampa Energia Sa

Buenos Aires, December 9, 2025. Pampa Energía S.A. ('Pampa' or the 'Company'; NYSE: PAM; ByMA: PAMP) announces that yesterday, Pampa early redeemed the third amortization installment of the CB Series 9 for the remaining outstanding amount of US$61 million (the "2026 Notes").

As a result, there are no 2026 Notes outstanding.

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