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$NAMS All transactions

NewAmsterdam Pharma Co N.V.

M

$ Value

$751K

Shares

75,117

Price

$10

Filed

Dec 29

Insider

Name

Kooij Louise Frederika

Title

Chief Accounting Officer

CIK

0002004379

Roles

Officer

Transaction Details

Transaction Date

2025-12-23

Code

M

Table

Non-Derivative

Ownership

Direct

Equity Swap

No

Shares After

90,117

Footnotes

The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $35.88 to $36.75 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 $36.09 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 $34.85 to $35.56 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 option was granted on November 22, 2022. The shares underlying the option vest in equal monthly installments over four years, with the first 1/48th of such shares vesting on December 1, 2022 and the remaining installments vesting on each one-month anniversary of the grant date, subject to the Reporting Person's continued service through each such date. | The option was granted on January 1, 2023. 25% of the shares underlying the option vest on the one-year anniversary of vesting start date, with the remaining shares vesting in equal monthly installments thereafter for three years, subject to the Reporting Person's continued service through each such date.

Filing Info

Accession No.

0001193125-25-335513

Form Type

4

Issuer CIK

0001936258

Kooij Louise Frederika's History

Date Ticker Type Value
2026-01-28 NAMS M $355K
2026-01-28 NAMS $1.0M
2026-01-28 NAMS M $0
2026-01-27 NAMS M $434K
2026-01-27 NAMS $1.3M
2026-01-27 NAMS M $0
2026-01-26 NAMS M $375K
2026-01-26 NAMS $1.1M
2026-01-26 NAMS $10K
2026-01-26 NAMS M $0

Other Insiders at NAMS (90d)

Insider Bought Sold Last
Kooij Louise Frederika
Chief Accounting Officer
$4.8M 2026-01-28