Vinci: implementation of the share buyback programme

Group 1 - VINCI has initiated a share buyback program by signing a share purchase agreement with an investment services provider on August 1, 2025 [1] - The agreement is effective from August 4 until September 26, 2025, with a total purchase limit of €300 million [1] - The purchase price for the shares will not exceed the maximum price established by the VINCI Ordinary and Extraordinary Shareholders' Meeting [1]