Ipsos: Monthly declaration of shares and voting rights - October 2025

Group 1 - The total number of shares as of October 31, 2025, is 43,203,225 [1] - The total voting rights associated with these shares is 48,977,829, while the exercisable voting rights are 48,924,307 [1] - The theoretical number of voting rights includes shares with suspended voting rights, as per Article 223-11 of the AMF general regulation [1] Group 2 - The number of voting rights excludes shares with suspended voting rights [2] - Additional information can be found in the "Regulated Information" section of the Ipsos website [2]