NewAmsterdam Pharma Co N.V. (NAMSW)

Latest Insider Confidence Score

2025Q4

44.8
Bearish

Company insider confidence (by quarter)

2024Q3 2025Q4

Largest shareholders

Insider Role (last 12 mo) Shares held Filed at
Forbion Growth Opportunities Fund I Cooperatief U.A. 10% Owner 10,656,172 Jan 2, 2025
Forbion Growth Management B.V. 10% Owner 10,656,172 Jan 2, 2025
ForGrowth NAP B.V. 10% Owner 10,656,172 Jan 2, 2025
Forbion Capital Fund IV Cooperatief U.A. 10% Owner 10,656,172 Jan 2, 2025
Forbion IV Management B.V. 10% Owner 10,656,172 Jan 2, 2025

Recent buy/sell transactions

Exec date Filing date Insider Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Sep 15, 2025 Sep 17, 2025 Topper James N Director Buy 48.8 +660 0.01% ✗ $15.6K
Sep 9, 2025 Sep 10, 2025 Kooij Louise Frederika Chief Accounting Officer Sell 17.5 -150,000 -90.91% ✗ $3.9M
Sep 8, 2025 Sep 10, 2025 Topper James N Director Buy 48.8 +1,260 0.02% ✗ $31.5K
Sep 3, 2025 Sep 5, 2025 Kooij Louise Frederika Chief Accounting Officer Sell 20.0 -18,073 -54.65% ✗ $453.5K
Sep 2, 2025 Sep 4, 2025 Kooij Louise Frederika Chief Accounting Officer Neutral 52.5 - 0.00% ✗ -
Aug 25, 2025 Aug 27, 2025 Kooij Louise Frederika Chief Accounting Officer Sell 22.5 -8,269 -35.54% ✗ $205.6K
Aug 21, 2025 Aug 25, 2025 Kastelein Johannes Jacob Pieter Chief Scientific Officer Sell 17.5 -100,000 -59.07% ✗ $2.5M
Aug 11, 2025 Aug 13, 2025 Topper James N Director Buy 48.8 +471 0.01% ✗ $11.3K
Jul 15, 2025 Jul 17, 2025 Kling Douglas F COO Sell 5.0 -98,612 -42.11% ✓ $2.1M
Jun 24, 2025 Jun 26, 2025 Topper James N Director Buy 60.0 +3,780 0.06% ✗ $69.5K
Jun 16, 2025 Jun 18, 2025 Kling Douglas F COO Sell 5.0 -100,000 -69.44% ✓ $1.9M
Jun 16, 2025 Jun 18, 2025 Topper James N Director Buy 60.0 +8,584 0.13% ✗ $167.4K
Jun 1, 2025 Jun 3, 2025 Marino Michael F III Officer Neutral 90.0 +55,000 100.00% ✗ -
Jun 1, 2025 Jun 3, 2025 LANGE LOUIS G Director Neutral 52.5 - 0.00% ✗ -
Jun 3, 2025 Marino Michael F III Officer Neutral 52.5 - 0.00% ✗ -
May 15, 2025 May 19, 2025 Kling Douglas F COO Neutral 15.0 -100,000 -69.44% ✓ -
May 1, 2025 May 2, 2025 Audet Juliette Berangere Officer Neutral 52.5 - 0.00% ✗ -
May 1, 2025 May 2, 2025 LANGE LOUIS G Director Neutral 52.5 - 0.00% ✗ -
Apr 14, 2025 Apr 21, 2025 LANGE LOUIS G Director Neutral 52.5 - 0.00% ✗ -
Apr 15, 2025 Apr 17, 2025 Kling Douglas F COO Neutral 15.0 -100,000 -69.44% ✓ -
Apr 15, 2025 Apr 17, 2025 Gulfo Adele M. Director Neutral 90.0 +10,860 100.00% ✗ -
Apr 17, 2025 Gulfo Adele M. Director Neutral 52.5 - 0.00% ✗ -
Mar 26, 2025 Mar 28, 2025 Topper James N Director Buy 48.8 +1,135 0.02% ✗ $25.5K
Mar 26, 2025 Mar 28, 2025 Kooij Louise Frederika Chief Accounting Officer Neutral 52.5 - 0.00% ✗ -
Mar 26, 2025 Mar 28, 2025 LANGE LOUIS G Director Neutral 52.5 - 0.00% ✗ -
Mar 26, 2025 Mar 28, 2025 Kastelein Johannes Jacob Pieter Chief Scientific Officer Neutral 90.0 +19,302 12.87% ✗ -
Mar 26, 2025 Mar 28, 2025 Kling Douglas F COO Neutral 47.5 -16,539 -27.32% ✗ -
Mar 26, 2025 Mar 28, 2025 Davidson Michael H. CEO Neutral 82.5 +18,734 2.55% ✗ -
Mar 24, 2025 Mar 26, 2025 Kastelein Johannes Jacob Pieter Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Mar 17, 2025 Mar 19, 2025 Kling Douglas F COO Neutral 15.0 -100,000 -69.44% ✓ -
Mar 4, 2025 Mar 6, 2025 Topper James N Director Buy 60.0 +4,005 0.06% ✗ $84.2K
Mar 4, 2025 Mar 5, 2025 Kooij Louise Frederika Chief Accounting Officer Sell 17.5 -150,000 -90.91% ✗ $3.1M
Feb 18, 2025 Feb 20, 2025 Kling Douglas F COO Neutral 15.0 -100,000 -53.19% ✓ -
Jan 29, 2025 Jan 31, 2025 Kling Douglas F COO Neutral 15.0 -70,441 -33.33% ✓ -
Jan 27, 2025 Jan 29, 2025 Somaiya Mayur Ian CFO Neutral 15.0 -61,883 -26.84% ✓ -
Jan 27, 2025 Jan 29, 2025 Kling Douglas F COO Neutral 15.0 -129,559 -38.73% ✓ -
Jan 7, 2025 Jan 8, 2025 Smither John W Director Neutral 90.0 +6,960 100.00% ✗ -
Jan 7, 2025 Jan 8, 2025 McKenna Mark C. Director Neutral 90.0 +6,960 100.00% ✗ -
Jan 7, 2025 Jan 8, 2025 Lewis William Director Neutral 90.0 +6,960 100.00% ✗ -
Jan 7, 2025 Jan 8, 2025 van der Kamp Hilde Johanna Director Neutral 90.0 +6,960 100.00% ✗ -
Jan 7, 2025 Jan 8, 2025 LANGE LOUIS G Director Neutral 90.0 +6,960 27.98% ✗ -
Jan 7, 2025 Jan 7, 2025 Kooij Louise Frederika Chief Accounting Officer Neutral 90.0 +15,000 100.00% ✗ -
Jan 7, 2025 Jan 7, 2025 Davidson Michael H. CEO Neutral 90.0 +123,529 100.00% ✗ -
Jan 7, 2025 Jan 7, 2025 Kastelein Johannes Jacob Pieter Chief Scientific Officer Neutral 90.0 +34,000 100.00% ✗ -
Jan 7, 2025 Jan 7, 2025 Audet Juliette Berangere Chief Business Officer Neutral 90.0 +14,000 1268.12% ✗ -
Jan 7, 2025 Jan 7, 2025 JONES WILLIAM A JR Chief Commercial Officer Neutral 90.0 +43,000 100.00% ✗ -
Jan 7, 2025 Jan 7, 2025 Kling Douglas F COO Neutral 90.0 +44,000 100.00% ✗ -
Jan 7, 2025 Jan 7, 2025 Somaiya Mayur Ian CFO Neutral 90.0 +38,000 100.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Kling Douglas F COO Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Kooij Louise Frederika Chief Accounting Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Audet Juliette Berangere Chief Business Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Somaiya Mayur Ian CFO Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 JONES WILLIAM A JR Chief Commercial Officer Neutral 52.5 - 0.00% ✗ -
Jan 2, 2025 Jan 6, 2025 Kastelein Johannes Jacob Pieter Chief Scientific Officer Neutral 52.5 - 0.00% ✗ -
Dec 30, 2024 Jan 2, 2025 ForGrowth NAP B.V. 10% Owner Sell 46.3 -29,846 -0.28% ✓ $762.2K
Dec 26, 2024 Dec 30, 2024 ForGrowth NAP B.V. 10% Owner Sell 42.5 -74,910 -0.70% ✓ $1.9M
Dec 20, 2024 Dec 26, 2024 ForGrowth NAP B.V. 10% Owner Sell 42.5 -91,068 -0.84% ✓ $2.3M
Dec 18, 2024 Dec 20, 2024 ForGrowth NAP B.V. 10% Owner Sell 40.0 -157,234 -1.43% ✓ $4.1M
Dec 16, 2024 Dec 18, 2024 ForGrowth NAP B.V. 10% Owner Sell 40.0 -115,480 -1.04% ✓ $3M
Dec 13, 2024 Dec 17, 2024 Bain Capital Life Sciences Investors, LLC 10% Owner Neutral 52.5 - 0.00% ✗ -
Dec 12, 2024 Dec 16, 2024 ForGrowth NAP B.V. 10% Owner Sell 40.0 -191,762 -1.69% ✓ $4.9M
Dec 10, 2024 Dec 12, 2024 ForGrowth NAP B.V. 10% Owner Sell 30.0 -462,288 -3.92% ✓ $11.7M
Nov 15, 2024 Nov 19, 2024 ForGrowth NAP B.V. 10% Owner Sell 43.8 -41,803 -0.35% ✓ $1M
Nov 13, 2024 Nov 15, 2024 ForGrowth NAP B.V. 10% Owner Sell 48.8 -10,898 -0.09% ✓ $272.5K
Oct 9, 2024 Oct 11, 2024 Davidson Michael H. CEO Neutral 52.5 - 0.00% ✗ -
Sep 27, 2024 Oct 1, 2024 Kooij Louise Frederika Chief Accounting Officer Sell 20.0 -45,000 -100.00% ✗ $707.4K
Sep 26, 2024 Sep 30, 2024 Audet Juliette Berangere Chief Business Officer Buy 91.3 +1,104 100.00% ✗ $17.3K