Trade Summary

1 week ago, Kooij Louise Frederika, serving as Chief Accounting Officer at Newamsterdam Pharma Co N.V. (NAMS), sold 145,000 shares at $35.84 per share, for a total transaction value of $5,196,741.00. Following this transaction, Kooij Louise Frederika now holds 15,000 shares of NAMS.

This sale represents a 91.00% decrease in Kooij Louise Frederika's stake in the company. This is considered a high-conviction trade given the significant change in ownership.

The trade was executed on Tuesday, December 23, 2025 and publicly disclosed via SEC Form 4 filing on Monday, December 29, 2025, 6 days after the trade was made.

Newamsterdam Pharma Co N.V. operates in the HEALTHCARE sector, specifically within the BIOTECHNOLOGY industry. Insider selling activity in this sector can provide valuable signals about industry trends and company-specific developments.