Kastelein Johannes Jacob Pieter bought NAMS

August 24, 2026 · Form 4 insider transaction

Kastelein Johannes Jacob Pieter bought 125,000 shares of NewAmsterdam Pharma Company N.V., a transaction worth N/A. The trade was recorded as option exercise and disclosed on an SEC Form 4, filed 1 day after the transaction.

Direction
Acquired (buy-side)
Shares
125,000
Price
N/A
Total value
N/A
RoleOfficer, Director
SecurityOrdinary Shares
Transaction codeM: Option exercise
Transaction dateAugust 24, 2026
Filing dateAugust 25, 2026
Shares owned after194,302
OwnershipIndirect
10b5-1 planNo
AmendedNo

Footnotes

The exercise price of the option is EUR 1.16392.; These Ordinary Shares are held by Futurum B.V. ("Futurum") through NAP PoolCo B.V. ("PoolCo") for the benefit of the Reporting Person. The Reporting Person exercises sole voting and investment control over the securities held by Futurum through PoolCo. PoolCo has no voting or investment control or pecuniary interest in the securities held on behalf of Futurum.

View the original Form 4 on SEC EDGAR