NEWAMSTERDAM PHARMA CO NV (NAMS) Stock Ownership and Short Interest
USA - NASDAQ:NAMS - NL00150012L7 - Common Stock
37.05 USD
+4.04 (+12.26%)
36.88 USD
-0.17 (-0.46%)
| Shares Outstanding | 112.63M |
| Float | 95.51M |
| Float Short Interest Percentage | 8.83% |
| Owners (insider) | 0.39% |
| Owners (institutional) | 91.44% |
| Owners (insider) change | 7.9% |
| Owners (institutional) change | 0.02% |
Insider Transactions
Top Institutional Holders
Insider Owners
| Date | Name | Type | Shares | Price | Amount |
|---|---|---|---|---|---|
| Sep 9, 2025 | Kooij Louise Frederika | Option Excercise | 150000 | 10.00 | $ 1,500,000.00 |
| Sep 9, 2025 | Kooij Louise Frederika | Open Market Sale | 150000 | 25.83 | $ 3,874,016.80 |
| Sep 8, 2025 | Topper James N | Open Market Purchase | 1260 | 24.99 | $ 31,487.40 |
| Sep 3, 2025 | Kooij Louise Frederika | Open Market Sale | 18073 | 25.09 | $ 453,451.57 |
| Sep 2, 2025 | Kooij Louise Frederika | Option Excercise | 18073 | $ 0.00 | |
| Aug 25, 2025 | Kooij Louise Frederika | Open Market Sale | 8269 | 24.86 | $ 205,567.34 |
| Aug 21, 2025 | Kastelein Johannes Jacob Pieter | Open Market Sale | 100000 | 24.72 | $ 2,471,639.78 |
| Aug 11, 2025 | Topper James N | Open Market Purchase | 471 | 23.98 | $ 11,293.97 |
| Jul 15, 2025 | Kling Douglas F | Option Excercise | 98612 | 10.90 | $ 1,074,870.80 |
| Jul 15, 2025 | Kling Douglas F | Open Market Sale | 98612 | 21.26 | $ 2,096,655.08 |
| Jun 24, 2025 | Topper James N | Open Market Purchase | 3780 | 18.38 | $ 69,466.07 |
| Jun 16, 2025 | Topper James N | Open Market Purchase | 8584 | 19.50 | $ 167,381.13 |
| Jun 16, 2025 | Kling Douglas F | Option Excercise | 100000 | 10.20 | $ 1,019,709.10 |
| Jun 16, 2025 | Kling Douglas F | Open Market Sale | 100000 | 19.29 | $ 1,929,141.04 |
| Jun 1, 2025 | Marino Michael F III | Grant | 55000 | $ 0.00 | |
| Jun 1, 2025 | LANGE LOUIS G | Option Excercise | 68 | 0.00 | $ 0.00 |
| May 15, 2025 | Kling Douglas F | Option Excercise | 100000 | 10.00 | $ 1,000,000.00 |
| May 15, 2025 | Kling Douglas F | Open Market Sale | 100000 | $ 0.00 | |
| May 1, 2025 | LANGE LOUIS G | Option Excercise | 69 | 0.00 | $ 0.00 |
| Apr 15, 2025 | Gulfo Adele M. | Grant | 10860 | $ 0.00 | |
| Apr 15, 2025 | Kling Douglas F | Option Excercise | 100000 | 10.00 | $ 1,000,000.00 |
| Apr 15, 2025 | Kling Douglas F | Open Market Sale | 100000 | $ 0.00 | |
| Mar 26, 2025 | LANGE LOUIS G | Option Excercise | 3102 | 0.00 | $ 0.00 |
| Mar 26, 2025 | Kastelein Johannes Jacob Pieter | Grant | 19302 | 0.00 | $ 0.00 |
| Mar 26, 2025 | Kastelein Johannes Jacob Pieter | Option Excercise | 45481 | 0.00 | $ 0.00 |
| Mar 26, 2025 | Kling Douglas F | Option Excercise | 16539 | 0.00 | $ 0.00 |
| Mar 26, 2025 | Kling Douglas F | Open Market Sale | 16539 | $ 0.00 | |
| Mar 26, 2025 | Davidson Michael H. | Grant | 30992 | 0.00 | $ 0.00 |
| Mar 26, 2025 | Davidson Michael H. | Option Excercise | 38394 | 0.00 | $ 0.00 |
| Mar 26, 2025 | Davidson Michael H. | Open Market Sale | 12258 | $ 0.00 | |
| Mar 26, 2025 | Topper James N | Open Market Purchase | 1135 | 22.49 | $ 25,520.59 |
| Mar 26, 2025 | Kooij Louise Frederika | Option Excercise | 8269 | 0.00 | $ 0.00 |
| Mar 24, 2025 | Kastelein Johannes Jacob Pieter | Option Excercise | 150000 | $ 0.00 | |
| Mar 17, 2025 | Kling Douglas F | Option Excercise | 100000 | 1.19 | $ 118,880.00 |
| Mar 17, 2025 | Kling Douglas F | Open Market Sale | 100000 | $ 0.00 | |
| Mar 4, 2025 | Kooij Louise Frederika | Option Excercise | 150000 | $ 0.00 | |
| Mar 4, 2025 | Kooij Louise Frederika | Open Market Sale | 150000 | 20.37 | $ 3,055,500.00 |
| Mar 4, 2025 | Topper James N | Open Market Purchase | 4005 | 21.02 | $ 84,203.12 |
| Feb 18, 2025 | Kling Douglas F | Option Excercise | 100000 | $ 0.00 | |
| Feb 18, 2025 | Kling Douglas F | Open Market Sale | 100000 | $ 0.00 | |
| Jan 29, 2025 | Kling Douglas F | Option Excercise | 70441 | $ 0.00 | |
| Jan 29, 2025 | Kling Douglas F | Open Market Sale | 70441 | $ 0.00 | |
| Jan 27, 2025 | Kling Douglas F | Option Excercise | 129559 | $ 0.00 | |
| Jan 27, 2025 | Kling Douglas F | Open Market Sale | 129559 | $ 0.00 | |
| Jan 27, 2025 | Somaiya Mayur Ian | Option Excercise | 61883 | 9.26 | $ 573,036.58 |
| Jan 27, 2025 | Somaiya Mayur Ian | Open Market Sale | 61883 | $ 0.00 | |
| Jan 7, 2025 | Kling Douglas F | Grant | 44000 | $ 0.00 | |
| Jan 7, 2025 | van der Kamp Hilde Johanna | Grant | 6960 | $ 0.00 | |
| Jan 7, 2025 | LANGE LOUIS G | Grant | 6960 | $ 0.00 | |
| Jan 7, 2025 | Smither John W | Grant | 6960 | $ 0.00 | |
| Jan 7, 2025 | McKenna Mark C. | Grant | 6960 | $ 0.00 | |
| Jan 7, 2025 | Lewis William | Grant | 6960 | $ 0.00 | |
| Jan 7, 2025 | Somaiya Mayur Ian | Grant | 38000 | $ 0.00 | |
| Jan 7, 2025 | Kooij Louise Frederika | Grant | 15000 | $ 0.00 | |
| Jan 7, 2025 | Davidson Michael H. | Grant | 123529 | $ 0.00 | |
| Jan 7, 2025 | Kastelein Johannes Jacob Pieter | Grant | 34000 | $ 0.00 | |
| Jan 7, 2025 | Audet Juliette Berangere | Grant | 14000 | $ 0.00 | |
| Jan 7, 2025 | JONES WILLIAM A JR | Grant | 43000 | $ 0.00 | |
| Dec 30, 2024 | ForGrowth NAP B.V. | Open Market Sale | 29846 | 25.54 | $ 762,174.32 |
| Dec 30, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 29846 | 25.54 | $ 762,174.32 |
| Dec 30, 2024 | Forbion IV Management B.V. | Open Market Sale | 29846 | 25.54 | $ 762,174.32 |
| Dec 30, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 29846 | 25.54 | $ 762,174.32 |
| Dec 30, 2024 | Forbion Growth Management B.V. | Open Market Sale | 29846 | 25.54 | $ 762,174.32 |
| Dec 26, 2024 | ForGrowth NAP B.V. | Open Market Sale | 74910 | 25.98 | $ 1,945,918.39 |
| Dec 26, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 74910 | 25.98 | $ 1,945,918.39 |
| Dec 26, 2024 | Forbion IV Management B.V. | Open Market Sale | 74910 | 25.98 | $ 1,945,918.39 |
| Dec 26, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 74910 | 25.98 | $ 1,945,918.39 |
| Dec 26, 2024 | Forbion Growth Management B.V. | Open Market Sale | 74910 | 25.98 | $ 1,945,918.39 |
| Dec 20, 2024 | ForGrowth NAP B.V. | Open Market Sale | 91068 | 25.58 | $ 2,329,520.01 |
| Dec 20, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 91068 | 25.58 | $ 2,329,520.01 |
| Dec 20, 2024 | Forbion IV Management B.V. | Open Market Sale | 91068 | 25.58 | $ 2,329,520.01 |
| Dec 20, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 91068 | 25.58 | $ 2,329,520.01 |
| Dec 20, 2024 | Forbion Growth Management B.V. | Open Market Sale | 91068 | 25.58 | $ 2,329,520.01 |
| Dec 18, 2024 | ForGrowth NAP B.V. | Open Market Sale | 157234 | 25.86 | $ 4,066,713.80 |
| Dec 18, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 157234 | 25.86 | $ 4,066,713.80 |
| Dec 18, 2024 | Forbion IV Management B.V. | Open Market Sale | 157234 | 25.86 | $ 4,066,713.80 |
| Dec 18, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 157234 | 25.86 | $ 4,066,713.80 |
| Dec 18, 2024 | Forbion Growth Management B.V. | Open Market Sale | 157234 | 25.86 | $ 4,066,713.80 |
| Dec 16, 2024 | ForGrowth NAP B.V. | Open Market Sale | 115480 | 25.95 | $ 2,996,156.01 |
| Dec 16, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 115480 | 25.95 | $ 2,996,156.01 |
| Dec 16, 2024 | Forbion IV Management B.V. | Open Market Sale | 115480 | 25.95 | $ 2,996,156.01 |
| Dec 16, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 115480 | 25.95 | $ 2,996,156.01 |
| Dec 16, 2024 | Forbion Growth Management B.V. | Open Market Sale | 115480 | 25.95 | $ 2,996,156.01 |
| Dec 12, 2024 | Forbion Growth Management B.V. | Open Market Sale | 191762 | 25.34 | $ 4,859,875.24 |
| Dec 12, 2024 | ForGrowth NAP B.V. | Open Market Sale | 191762 | 25.34 | $ 4,859,875.24 |
| Dec 12, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 191762 | 25.34 | $ 4,859,875.24 |
| Dec 12, 2024 | Forbion IV Management B.V. | Open Market Sale | 191762 | 25.34 | $ 4,859,875.24 |
| Dec 12, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 191762 | 25.34 | $ 4,859,875.24 |
| Dec 10, 2024 | ForGrowth NAP B.V. | Open Market Sale | 462288 | 25.40 | $ 11,740,617.80 |
| Dec 10, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 462288 | 25.40 | $ 11,740,617.80 |
| Dec 10, 2024 | Forbion IV Management B.V. | Open Market Sale | 462288 | 25.40 | $ 11,740,617.80 |
| Dec 10, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 462288 | 25.40 | $ 11,740,617.80 |
| Dec 10, 2024 | Forbion Growth Management B.V. | Open Market Sale | 462288 | 25.40 | $ 11,740,617.80 |
| Nov 15, 2024 | ForGrowth NAP B.V. | Open Market Sale | 41803 | 25.07 | $ 1,047,876.21 |
| Nov 15, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 41803 | 25.07 | $ 1,047,876.21 |
| Nov 15, 2024 | Forbion IV Management B.V. | Open Market Sale | 41803 | 25.07 | $ 1,047,876.21 |
| Nov 15, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 41803 | 25.07 | $ 1,047,876.21 |
| Nov 15, 2024 | Forbion Growth Management B.V. | Open Market Sale | 41803 | 25.07 | $ 1,047,876.21 |
| Nov 13, 2024 | ForGrowth NAP B.V. | Open Market Sale | 10898 | 25.01 | $ 272,510.63 |
| Nov 13, 2024 | Forbion Capital Fund IV Cooperatief U.A. | Open Market Sale | 10898 | 25.01 | $ 272,510.63 |
| Nov 13, 2024 | Forbion IV Management B.V. | Open Market Sale | 10898 | 25.01 | $ 272,510.63 |
| Nov 13, 2024 | Forbion Growth Opportunities Fund I Cooperatief U.A. | Open Market Sale | 10898 | 25.01 | $ 272,510.63 |
| Nov 13, 2024 | Forbion Growth Management B.V. | Open Market Sale | 10898 | 25.01 | $ 272,510.63 |