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Consolidated Statements of Changes in Shareholders' Equity - EUR (€)
Common Stock [Member]
Retained Earnings [Member]
AOCI Attributable to Parent [Member]
Total
Balance at Dec. 31, 2023 € 67,344,140 € (47,143,025) € 231,142 € 20,432,257
Balance, shares at Dec. 31, 2023 18,216,958      
Share-based compensation € 232,768 232,768
Capital increase ATM program € 270,885 270,885
Capital increase ATM program, shares 72,908      
Other comprehensive income (loss) (80,369) (80,369)
Net loss (4,038,506) (4,038,506)
Balance at Jun. 30, 2024 € 67,847,793 (51,181,531) 150,773 16,817,035
Balance, shares at Jun. 30, 2024 18,289,866      
Share-based compensation € 614,487 614,487
Other comprehensive income (loss) (61,827) (61,827)
Net loss   (4,873,989)   (4,873,989)
Balance at Dec. 31, 2024 € 68,462,280 (56,055,520) 88,946 12,495,706
Balance, shares at Dec. 31, 2024 18,289,866      
Share-based compensation € 424,360 424,360
Capital increase ATM program € 2,977,061 2,977,061
Capital increase ATM program, shares 856,602      
Other comprehensive income (loss) 43,598 43,598
Net loss (3,826,585) (3,826,585)
Balance at Jun. 30, 2025 € 71,863,701 € (59,882,105) € 132,544 € 12,114,140
Balance, shares at Jun. 30, 2025 19,146,468