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Insider Transactions by Johannes Jacob Kastelein

Symbol CompanyOwnerRelationshipDateTransactionCost# SharesValue ($)Total SharesFiling
NAMSNewAmsterdam Pharma Co N.V.Johannes Jacob KasteleinChief Scientific OfficerAug 21, 2025Sale$24.2950,0001,214,500119,302Aug 25, 2025, 05:04 PM
NAMSNewAmsterdam Pharma Co N.V.Johannes Jacob KasteleinChief Scientific OfficerAug 22, 2025Sale$25.1450,0001,257,14076,960Aug 25, 2025, 05:04 PM
NAMSNewAmsterdam Pharma Co N.V.Johannes Jacob KasteleinChief Scientific OfficerMar 26, 2025Option/RSU Exercise-45,481-79,481Mar 28, 2025, 05:20 PM
NAMSNewAmsterdam Pharma Co N.V.Johannes Jacob KasteleinChief Scientific OfficerMar 24, 2025Option/RSU Exercise-150,000-150,000Mar 26, 2025, 04:27 PM
NAMSNewAmsterdam Pharma Co N.V.Johannes Jacob KasteleinChief Scientific OfficerMar 26, 2024Sale$21.50190,4764,095,2340Mar 27, 2024, 04:30 PM
NAMSNewAmsterdam Pharma Co N.V.Johannes Jacob KasteleinChief Scientific OfficerMar 26, 2024Tax Payment (Shares)$22.7211,197254,396190,476Mar 27, 2024, 04:30 PM
NAMSNewAmsterdam Pharma Co N.V.Johannes Jacob KasteleinChief Scientific OfficerMar 26, 2024Option/RSU Exercise-201,673-201,673Mar 27, 2024, 04:30 PM