| Schedule of intangible assets |
| | | | | | | | | Development | | Patents and | | | (in EUR 000) | | cost | | licenses | | Total | Cost | | | | | | | Opening value at January 1, 2025 | | 53,410 | | 591 | | 54,001 | Additions | | 1,507 | | — | | 1,507 | Other movements | | (4) | | — | | (4) | Cost at June 30, 2025 | | 54,913 | | 591 | | 55,504 | Opening value at January 1, 2026 | | 55,367 | | 591 | | 55,958 | Additions | | 154 | | — | | 154 | Cost at June 30, 2026 | | 55,521 | | 591 | | 56,112 | Amortization | | | | | | | Opening amortization at January 1, 2025 | | (3,452) | | (168) | | (3,620) | Amortization | | (456) | | (21) | | (477) | Amortization at June 30, 2025 | | (3,908) | | (189) | | (4,097) | Opening amortization at January 1, 2026 | | (5,639) | | (211) | | (5,850) | Amortization | | (2,225) | | (21) | | (2,246) | Amortization at June 30, 2026 | | (7,864) | | (232) | | (8,096) | Net book value at June 30, 2025 | | 51,005 | | 402 | | 51,407 | Net book value at June 30, 2026 | | 47,657 | | 359 | | 48,016 |
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