NAMSW · Insider trading · 13F holders · Congress trades
Newamsterdam Pharma Company (NAMSW)
Who is buying and selling NAMSW: company insiders on SEC Form 4, hedge funds and superinvestors on Form 13F, and members of Congress under the STOCK Act. Every figure links to the filing or page it comes from.
- 13F filers holding
- 2
- Insider buys, 90 days
- $0
- Insider sales, 90 days
- $0
- Congress trades, 12 months
- 0
NAMSW at a glance
- No open-market insider purchases or sales of NAMSW were filed in the last 90 days.
- 2 13F filers hold NAMSW among their 50 largest positions, worth $12.8M combined. The biggest bets by portfolio weight are Frazier Life Sciences Management, L.P. (0.2%) and Bain Capital Life Sciences Investors, LLC (0.1%).
- No member of Congress has disclosed a trade in NAMSW.
NAMSW insider trading
No open-market insider purchases or sales of NAMSW were filed in the last 90 days.
Who owns NAMSW? Hedge funds and superinvestors
2 13F filers hold NAMSW among their 50 largest positions, worth $12.8M combined. The biggest bets by portfolio weight are Frazier Life Sciences Management, L.P. (0.2%) and Bain Capital Life Sciences Investors, LLC (0.1%).
| Manager | % of portfolio | Value | Shares | Last quarter | 13F |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P.Hedge fund | 0.2% | $10.7M | 500,333 | +0.0% shares | Q2 2026 |
| Bain Capital Life Sciences Investors, LLCAsset manager | 0.1% | $2.1M | 99,999 | +0.0% shares | Q2 2026 |
Each manager counts with its latest 13F (Q2 2026: 2). Screen NAMSW in the grand portfolio →
NAMSW stock trades by members of Congress
No member of Congress has disclosed a trade in NAMSW.
NAMSW questions and answers
Are insiders buying NAMSW stock?
No open-market insider purchases or sales of NAMSW were filed in the last 90 days.
Which hedge funds own NAMSW?
2 13F filers hold NAMSW among their 50 largest positions, worth $12.8M combined. The biggest bets by portfolio weight are Frazier Life Sciences Management, L.P. (0.2%) and Bain Capital Life Sciences Investors, LLC (0.1%).
Has Congress traded NAMSW?
No member of Congress has disclosed a trade in NAMSW.
Who is the largest holder of NAMSW?
Among 13F filers, Frazier Life Sciences Management, L.P. reports the largest NAMSW position, $10.7M (500,333 shares) in its Q2 2026 13F. The biggest bet by portfolio weight is Frazier Life Sciences Management, L.P.'s: 0.2% of its portfolio.
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