Johannes Jacob Pieter Kastelein
Chief Scientific Officer at NewAmsterdam Pharma · 7 reported transactions in 1 company · latest trade Feb 20, 2026
Their trades
Sold | Feb 20, 2026 | Feb 20, 2026 close $25.97 → Oct 23, 2026 close $9.25. S&P 500 +10.2% over the same days. | ||
Sold | Feb 20, 2026 | Feb 20, 2026 close $25.97 → Oct 23, 2026 close $9.25. S&P 500 +10.2% over the same days. | ||
Sold | Jan 5, 2026 | Jan 5, 2026 close $23.10 → Oct 23, 2026 close $9.25. S&P 500 +10.5% over the same days. | ||
Sold | Aug 22, 2025 | Aug 22, 2025 close $13.88 → Oct 23, 2026 close $9.25. S&P 500 +17.8% over the same days. | ||
Sold | Aug 22, 2025 | Aug 22, 2025 close $13.88 → Oct 23, 2026 close $9.25. S&P 500 +17.8% over the same days. | ||
Sold | Aug 21, 2025 | Aug 21, 2025 close $13.44 → Oct 23, 2026 close $9.25. S&P 500 +19.6% over the same days. |
$1.09M
Feb 20, 2026 close $25.97 → Oct 23, 2026 close $9.25. S&P 500 +10.2% over the same days.
$514.2K
Feb 20, 2026 close $25.97 → Oct 23, 2026 close $9.25. S&P 500 +10.2% over the same days.
$199.5K
Jan 5, 2026 close $23.10 → Oct 23, 2026 close $9.25. S&P 500 +10.5% over the same days.
$195.2K
Aug 22, 2025 close $13.88 → Oct 23, 2026 close $9.25. S&P 500 +17.8% over the same days.
$1.06M
Aug 22, 2025 close $13.88 → Oct 23, 2026 close $9.25. S&P 500 +17.8% over the same days.
$1.21M
Aug 21, 2025 close $13.44 → Oct 23, 2026 close $9.25. S&P 500 +19.6% over the same days.