← Back
$NAMS All transactions

NewAmsterdam Pharma Co N.V.

▼ SELL

$ Value

$1.1M

Shares

30,789

Price

$35

Filed

Feb 24

Insider

Name

Kastelein Johannes Jacob Pieter

Title

Chief Scientific Officer

CIK

0002000389

Roles

Director Officer

Transaction Details

Transaction Date

2026-02-20

Code

S

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

53,500

Footnotes

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $34.24 to $35.23 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each transaction. | The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $35.24 to $35.86 per share. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold in each transaction.

Filing Info

Accession No.

0001193125-26-067260

Form Type

4

Issuer CIK

0001936258

Kastelein Johannes Jacob Pieter's History

Date Ticker Type Value
2026-02-20 NAMS $514K
2026-02-20 NAMS $1.1M
2026-01-07 NAMS A
2026-01-07 NAMS A $0
2026-01-05 NAMS $200K
2025-08-22 NAMS $1.1M
2025-08-22 NAMS $195K
2025-08-21 NAMS $1.2M

Other Insiders at NAMS (90d)

Insider Bought Sold Last
Davidson Michael H.
Chief Executive Officer
$25.3M 2026-03-02
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
$514K 2026-02-20
Kooij Louise Frederika
Chief Accounting Officer
$4.8M 2026-01-28