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Share-based payments - Schedule of Free Shares Outstanding (Details) | Jun. 30, 2025 shares | Jun. 27, 2023 shares benefeciary
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Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of awards outstanding (in shares) | 5,158,881 |
AGA 2023 - P1 |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of awards authorised (in shares) |  | 1,200,000
Total number of awards granted (in shares) |  | 427,110
Total number of shares to which the awards were likely to give right (in shares) |  | 427,110
Number of shares subscribed (in shares) | 392,060 |
Total number of awards lapsed, cancelled or forfeited (in shares) | 35,050 |
Total number of awards outstanding (in shares) | 0 |
Total number of shares that may be subscribed (in shares) | 0 |
Duration of the holding period |  | 1 year
AGA 2023 - P1 | Corporate officers |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of shares to which the awards were likely to give right (in shares) |  | 298,860
AGA 2023 - P1 | Corporate officers | Laurent LEVY |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of shares to which the awards were likely to give right (in shares) |  | 200,116
AGA 2023 - P1 | Corporate officers | Anne-Juliette HERMANT |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of shares to which the awards were likely to give right (in shares) |  | 33,354
AGA 2023 - P1 | Corporate officers | Bart VAN RHIJN |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of shares to which the awards were likely to give right (in shares) |  | 65,390
AGA 2023 - P1 | Beneficiaries other than corporate officers |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Number of beneficiaries who are not corporate officers | benefeciary |  | 88
AGA 2023 - P2 |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of awards authorised (in shares) |  | 1,200,000
Total number of awards granted (in shares) |  | 439,210
Total number of shares to which the awards were likely to give right (in shares) |  | 439,210
Number of shares subscribed (in shares) | 417,760 |
Total number of awards lapsed, cancelled or forfeited (in shares) | 21,450 |
Total number of awards outstanding (in shares) | 0 |
Total number of shares that may be subscribed (in shares) | 0 |
Duration of the holding period |  | 1 year
AGA 2023 - P2 | Corporate officers |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of shares to which the awards were likely to give right (in shares) |  | 293,470
AGA 2023 - P2 | Corporate officers | Laurent LEVY |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of shares to which the awards were likely to give right (in shares) |  | 200,116
AGA 2023 - P2 | Corporate officers | Anne-Juliette HERMANT |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of shares to which the awards were likely to give right (in shares) |  | 33,354
AGA 2023 - P2 | Corporate officers | Bart VAN RHIJN |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Total number of shares to which the awards were likely to give right (in shares) |  | 65,390
AGA 2023 - P2 | Beneficiaries other than corporate officers |  |
Disclosure Of Detailed Information About Share-based Payments [Line Items] |  |
Number of beneficiaries who are not corporate officers | benefeciary |  | 87

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