NewAmsterdam Pharma Company N.V.

NAMSW • NASDAQ

NewAmsterdam Pharma Company N.V. is a pharmaceutical preparations company on NASDAQ. As of Q3 2025, 7 institutional investors hold shares in this company, with total holdings valued at $20.4M. Frazier Life Sciences Management, L.P. is the largest holder with a position valued at $8.6M.

PHARMACEUTICAL PREPARATIONS

Employees29.0

Websitenewamsterdampharma.com

Country

United States of America

Overview

Overview of institutional ownership in NAMSW as of Q3 2025

All Institutions

Institutions: 7
Value Held: $20.4M
Shares Held: 1.2M
Avg Position: $2.9M
Median Position: $1.6M

Hedge Funds

Hedge Funds: 4
Value Held: $11.8M
Shares Held: 687.8K
Avg Position: $2.9M
Median Position: $2.9M

Biggest Investors

Institutions with the largest positions in NAMSW as of Q3 2025

Institution	Key People	Position Value	Ownership	Owned Since	Total AUM (Long)
Frazier Life Sciences Management, L.P. Venture Capital	James Newman Topper Managing Partner	$8.6M 0.26% of portfolio	0.00% 500.3K shares	Q4 2022 Held for 2y 11m	$3.3B
RA CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short	Michael Saulnier CFO	$5.7M 0.07% of portfolio	0.00% 333.3K shares	Q4 2022 Held for 2y 11m	$8.1B
Affinity Asset Advisors, LLC Hedge Fund•Long/Short	Jonathan Bo-Shing Chu Founder	$4.2M 0.43% of portfolio	0.00% 245.0K shares	Q3 2025 Held for 2 months	$983.0M
DEERFIELD MANAGEMENT CO /NY Hedge Fund•Long/Short	James Edward Flynn President	$1.6M 0.03% of portfolio	0.00% 92.8K shares	Q4 2022 Held for 2y 11m	$6.0B
Laurion Capital Management LP Hedge Fund•Multi-Strategy	Masih Mohebbi-Forushani CFO	$285.2K 0.04% of portfolio	0.00% 16.7K shares	Q4 2022 Held for 2y 11m	$679.7M
A Atlantic Trust Group, LLC Institution	-	$22.4K 0.00% of portfolio	0.00% 1.3K shares	Q1 2024 Held for 1y 8m	$58.4B
UBS Group AG Institution	Sergio P. Ermotti CEO	$8.8K 0.00% of portfolio	0.00% 512.0 shares	Q4 2024 Held for 11 months	$511.54B
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	Christopher Lazarus Gust CEO	- 0.00% of portfolio	0.00% - shares	Q4 2024 Held for 11 months	$1.5B

Net Capital Flow

Institutional buying and selling activity for NAMSW in Q3 2025

Traded: +$4.1M
Buyers: 1
Sellers: 3
Total Bought: +$4.2M
Total Sold: −$56.3K
Avg Position: $2.5M

Biggest Buyers

Institution	Net Bought	Current Position
Affinity Asset Advisors, LLC Hedge Fund•Long/Short	+$4.2M +- shares	$4.2M 245.0K shares

Biggest Sellers

Institution	Net Sold	Current Position
A Atlantic Trust Group, LLC Institution	−$31.3K −1.8K shares	$22.4K 1.3K shares
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	−$16.7K −2.1K shares	Sold Off 0 shares
UBS Group AG Institution	−$8.2K −481.0 shares	$8.8K 512.0 shares

Entry and Exit Activity

Institutions that initiated new positions or completely exited NAMSW in Q3 2025

New Positions: 1
New Value: $4.2M
Exited Positions: 1
Exited Value: $16.7K

New Positions

Institution	Position Value
Affinity Asset Advisors, LLC Hedge Fund•Long/Short	$4.2M 245.0K shares

Exited Positions

Institution	Previous Position
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	$16.7K 2.1K shares

Options Activity

Institutions with the largest Call and Put options positions in NAMSW as of Q3 2025

Call Positions: 1
Call Value: $1.3M
Put Positions: 0
Put Value: -

Call Positions

Institution	Position Value
MILLENNIUM MANAGEMENT LLC Hedge Fund•Multi-Strategy	$1.3M 750.0 contracts

Put Positions

Institution	Position Value
No put positions found

Most Committed Institutions

Institutions with NAMSW as the highest % of their portfolio as of Q3 2025

Institution	Key People	Portfolio Weight	Ownership	Owned Since	Total AUM (Long)
Affinity Asset Advisors, LLC Hedge Fund•Long/Short	Jonathan Bo-Shing Chu Founder	0.43% $4.2M	0.00% 245.0K shares	Q3 2025 Held for 2 months	$983.0M
Frazier Life Sciences Management, L.P. Venture Capital	James Newman Topper Managing Partner	0.26% $8.6M	0.00% 500.3K shares	Q4 2022 Held for 2y 11m	$3.3B
RA CAPITAL MANAGEMENT, LLC Hedge Fund•Long/Short	Michael Saulnier CFO	0.07% $5.7M	0.00% 333.3K shares	Q4 2022 Held for 2y 11m	$8.1B
Laurion Capital Management LP Hedge Fund•Multi-Strategy	Masih Mohebbi-Forushani CFO	0.04% $285.2K	0.00% 16.7K shares	Q4 2022 Held for 2y 11m	$679.7M
DEERFIELD MANAGEMENT CO /NY Hedge Fund•Long/Short	James Edward Flynn President	0.03% $1.6M	0.00% 92.8K shares	Q4 2022 Held for 2y 11m	$6.0B
A Atlantic Trust Group, LLC Institution	-	0.00% $22.4K	0.00% 1.3K shares	Q1 2024 Held for 1y 8m	$58.4B
UBS Group AG Institution	Sergio P. Ermotti CEO	0.00% $8.8K	0.00% 512.0 shares	Q4 2024 Held for 11 months	$511.54B
WOLVERINE ASSET MANAGEMENT LLC Hedge Fund•Multi-Strategy	Christopher Lazarus Gust CEO	0.00% -	0.00% - shares	Q4 2024 Held for 11 months	$1.5B

Hedge Fund Spotlight

Discover hedge funds investing in NAMSW

Affinity Asset Advisors, LLC

Hedge Fund • Long/Short

Portfolio ManagerJonathan Bo-Shing Chu

Portfolio Value: $983.0M
Positions: 78
Last Reported: Q3 2025

Sector Allocation

Position in NewAmsterdam Pharma Company N.V.

Market Value: $4.2M
Shares Held: 245.0K
Portfolio Weight: 0.43%
Owned Since: 2025-Q3

Top Holding	Sector	Market Value	Weight
1 VRNA Verona Pharma VRNA	Unknown Unknown	$66.7M	6.78%
2 Insmed INSM	Biotechnology Healthcare	$64.8M	6.59%
3 SPDR S&P 500 ETF Trust SPY	ETF ETF	$56.3M	5.73%

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