Back to Insider Trading

Kastelein Johannes Jacob Pieter

NAMS · Chief Scientific Officer

Companies Traded

1

Total Buys

0

$0

Total Sells

6

$10.90M

Net Position

-$10.90M

Net Seller

Company Activity

Company Role Buys Sells Holdings Last Activity
NAMS NewAmsterdam Pharma Co N.V.
Chief Scientific Officer
0
$0
6
$10.90M
69,302
$2.10M
Mar 9, 2026

Recent Transactions

NAMS SELL

NewAmsterdam Pharma Co N.V.

Shares

101,409

Price

$30

Total Value

$3.07M

Date

Mar 9, 2026

NAMS SELL

NewAmsterdam Pharma Co N.V.

Shares

94,124

Price

$30

Total Value

$2.85M

Date

Mar 6, 2026

NAMS SELL

NewAmsterdam Pharma Co N.V.

Shares

104,467

Price

$30

Total Value

$3.17M

Date

Mar 5, 2026

NAMS SELL

NewAmsterdam Pharma Co N.V.

Shares

30,789

Price

$35

Total Value

$1.09M

Date

Feb 20, 2026

NAMS SELL

NewAmsterdam Pharma Co N.V.

Shares

14,692

Price

$35

Total Value

$514K

Date

Feb 20, 2026

NAMS SELL

NewAmsterdam Pharma Co N.V.

Shares

6,000

Price

$33

Total Value

$200K

Date

Jan 5, 2026

Trading Timeline

First Transaction

Jan 5, 2026

Latest Transaction

Mar 9, 2026