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Kastelein Johannes Jacob Pieter

Insider CIK 2000389 · NAMS Chief Scientific Officer, Director

Track record PRO

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Track record
See how this insider's past purchases performed 30 and 90 days later, and a conviction score on each buy.
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Trades across companies

TickerCodeTradeFiledSharesPriceValueOwned after
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2026-09-302026-10-0250,246— $0344,983SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-09-302026-10-0250,246$25.03 $1.26M69,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2026-09-302026-10-0250,246— —119,548SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2026-08-242026-08-25125,000— $0395,229SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2026-08-242026-08-25125,000— $0194,302SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-08-242026-08-25125,000$26.91 $3.36M69,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2026-08-242026-08-25125,000— $0395,229SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-08-242026-08-25125,000$26.91 $3.36M69,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2026-08-242026-08-25125,000— —194,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2026-03-092026-03-09101,409— $0520,229SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2026-03-092026-03-09101,409— $0170,711SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-03-092026-03-09101,409$30.29 $3.07M69,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2026-03-062026-03-0994,124— $0621,638SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-03-062026-03-0994,124$30.32 $2.85M69,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2026-03-062026-03-0994,124— $0163,426SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2026-03-052026-03-09104,467— $0715,762SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-03-052026-03-09104,467$30.30 $3.17M69,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2026-03-052026-03-09104,467— $0173,769SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-02-202026-02-2414,692$35.00 $514.2K84,289SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-02-202026-02-2430,789$35.46 $1.09M53,500SEC↗
NAMS NewAmsterdam Pharma Co N.V A Award deriv2026-01-072026-01-07115,000— $0115,000SEC↗
NAMS NewAmsterdam Pharma Co N.V A Award2026-01-072026-01-0725,500— $098,981SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2026-01-052026-01-076,000$33.25 $199.5K73,481SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2025-08-222025-08-2542,342$25.08 $1.06M76,960SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2025-08-222025-08-257,658$25.49 $195.2K69,302SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2025-08-212025-08-2550,000$24.29 $1.21M119,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2025-03-262025-03-2845,481— $00SEC↗
NAMS NewAmsterdam Pharma Co N.V A Award deriv2025-03-262025-03-2845,481— $045,481SEC↗
NAMS NewAmsterdam Pharma Co N.V A Award2025-03-262025-03-2819,302— $0169,302SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2025-03-262025-03-2845,481— $079,481SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2025-03-242025-03-26150,000— $0820,229SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2025-03-242025-03-26150,000— $0150,000SEC↗
NAMS NewAmsterdam Pharma Co N.V A Award2025-01-072025-01-0734,000— $034,000SEC↗
NAMS NewAmsterdam Pharma Co N.V A Award deriv2025-01-022025-01-06200,000— $0200,000SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise deriv2024-03-262024-03-27201,673— $0970,229SEC↗
NAMS NewAmsterdam Pharma Co N.V M Exercise2024-03-262024-03-27201,673— $0201,673SEC↗
NAMS NewAmsterdam Pharma Co N.V F Tax w/h2024-03-262024-03-2711,197$22.72 $254.4K190,476SEC↗
NAMS NewAmsterdam Pharma Co N.V S Sale2024-03-262024-03-27190,476$21.50 $4.10M0SEC↗
NAMS NewAmsterdam Pharma Co N.V A Award deriv2024-01-012024-01-03500,000— $0500,000SEC↗