Louise Frederika Kooij - 02 Sep 2025 Form 4 Insider Report for NewAmsterdam Pharma Co N.V. (NAMS)

Signature
/s/ Louise Kooij
Issuer symbol
NAMS
Transactions as of
02 Sep 2025
Net transactions value
$0
Form type
4
Filing time
04 Sep 2025, 17:43:24 UTC
Previous filing
27 Aug 2025
Next filing
05 Sep 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Kooij Louise Frederika Chief Accounting Officer C/O NEWAMSTERDAM PHARMA COMPANY N.V., GOOIMEER 2-35, NAARDEN, NETHERLANDS /s/ Louise Kooij 04 Sep 2025 0002004379

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction NAMS Ordinary Shares Options Exercise +18,073 +120% 33,073 02 Sep 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction NAMS Option (right to buy) Options Exercise $0 -18,073 -100% $0.000000 0 02 Sep 2025 Ordinary Shares 18,073 Direct F1, F2, F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The exercise price of the option is EUR 1.16392.
F2 The option was granted on November 22, 2022 to replace an option originally granted on July 6, 2021 which was cancelled in connection with the consummation of NewAmsterdam Pharma Company N.V.'s business combination with Frazier Lifesciences Acquisition Corporation. 60,879 of the shares underlying the option immediately vested on the grant date. 25% of the remaining shares underlying the option vested on January 1, 2021, the one-year anniversary of the 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.
F3 The securities were previously held indirectly by the Reporting Person through LouFre Management B.V. ("LouFre") for the benefit of the Reporting Person. The Reporting Person had the sole pecuniary interest in the securities.