Notification of treasury shares purchase on 9.17.2026

Performance Technologies S.A. (hereinafter the “Company”) hereby informs the investment community that, pursuant to the resolution of the Annual General Meeting of its shareholders dated 5.13.2026 under item 9 of the Agenda, as further specified by the resolution of the Board of Directors dated 9.15.2026, on Thursday, 9.17.2026, it proceeded with the purchase of 2,500 treasury shares, at an average acquisition price of euros 9.78 per share and a total transaction value of euros 24,444.64.

Following the aforementioned transaction and taking into account the treasury shares already held by the Company under the previous treasury shares purchase program, which was approved by resolution of the Extraordinary General Meeting dated 1.31.2024, the Company currently holds a total of 137,250 treasury shares, corresponding to 0.951% of its total 14,430,683 shares, as this number was formed following the share capital increase resolved by the Annual General Meeting of shareholders dated 5.13.2026.

This announcement is made in accordance with Regulation (EU) No 596/2014 of the European Parliament and of the Council, as well as Commission Delegated Regulation (EU) 2016/1052.