Johannes Jacob Pieter Kastelein

NAMS

Johannes Jacob Pieter Kastelein serves as CTO at NewAmsterdam Pharma Company N.V. (NAMS). This page tracks their complete SEC Form 4 insider trading history including stock purchases and sales.

Total Buys

0 trades

$0.00

Total Sells

1 trades

$1.61M

Net Position

Net Seller

$1.61M

Companies Traded

NAMS

Active Period

Feb 2026

1 total trades

Most Recent

Sell NAMS

Feb 24, 2026 · $1.61M

Johannes Jacob Pieter Kastelein's Insider Trading at NewAmsterdam Pharma Company N.V. (NAMS)

Buys

0 · $0.00

Sells

1 · $1.61M

Total Shares Bought

Total Shares Sold

45,481

NAMS Price Chart

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Date	Type	Shares	Avg Price	Value	Shares After
Feb 24, 2026↗	Sell	45,481	$35.31	$1.61M	84,289

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