Insider trading activities (stock purchases, sales, and option exercises) reported by insiders of Newamsterdam Pharma Co N.v. (NAMS) since 2024 are shown in Table 1 and Table 2. Table 1 shows the monthly insider trading data of Newamsterdam Pharma Co N.v.. Table 2 shows the detailed insider transactions. This company's CIK number is 1936258.
Total stock buying since 2024: $637,854.
Total stock sales since 2024: $48,317,243.
Total stock option exercises since 2024: $8,919,349.
| Insider Buying | Insider Sales | Option Exercises | ||||
|---|---|---|---|---|---|---|
| Year | Shares | Value | Shares | Value | Shares | Value |
| 2025 | 17,975 | $357,862 | 1,380,126 | $18,244,977 | 1,523,124 | $8,919,349 |
| 2024 | 16,104 | $279,992 | 1,214,941 | $30,072,266 | 246,673 | $0 |
| Trading Period | Insider Buying | Insider Sales | Option Exercises | |||
|---|---|---|---|---|---|---|
| year-month | Shares | Value | Shares | Value | Shares | Value |
| 2025-09 | 0 | $0 | 0 | $0 | 18,073 | $0 |
| 2025-08 | 471 | $11,294 | 108,269 | $2,684,317 | 0 | $0 |
| 2025-07 | 0 | $0 | 493,060 | $10,558,160 | 493,060 | $5,374,350 |
| 2025-06 | 12,364 | $236,843 | 100,000 | $1,947,000 | 100,068 | $1,044,999 |
| 2025-05 | 0 | $0 | 100,000 | $0 | 100,069 | $1,000,000 |
| 2025-04 | 0 | $0 | 100,000 | $0 | 100,069 | $1,000,000 |
| 2025-03 | 5,140 | $109,725 | 278,797 | $3,055,500 | 511,785 | $500,000 |
| 2025-01 | 0 | $0 | 200,000 | $0 | 200,000 | $0 |
| 2024-12 | 0 | $0 | 926,764 | $23,949,230 | 0 | $0 |
| 2024-11 | 0 | $0 | 52,701 | $1,320,402 | 0 | $0 |
| 2024-10 | 0 | $0 | 45,000 | $707,400 | 0 | $0 |
| 2024-09 | 1,104 | $17,332 | 0 | $0 | 45,000 | $0 |
| 2024-08 | 5,000 | $81,350 | 0 | $0 | 0 | $0 |
| 2024-06 | 5,000 | $86,310 | 0 | $0 | 0 | $0 |
| 2024-03 | 0 | $0 | 190,476 | $4,095,234 | 201,673 | $0 |
| 2024-02 | 5,000 | $95,000 | 0 | $0 | 0 | $0 |
| Trade Date | Insider Name | Trade Type | Shares | Price ($) | Value ($) |
|---|---|---|---|---|---|
| 2025-09-02 | Kooij Louise Frederika (Chief Accounting Officer) | Option Ex | 18,073 | .00 | 0 |
| 2025-08-25 | Kooij Louise Frederika (Chief Accounting Officer) | Sale | 8,269 | 24.86 | 205,567 |
| 2025-08-22 | Kastelein Johannes Jacob Pieter (Chief Scientific Officer) | Sale | 50,000 | 25.29 | 1,264,250 |
| 2025-08-21 | Kastelein Johannes Jacob Pieter (Chief Scientific Officer) | Sale | 50,000 | 24.29 | 1,214,500 |
| 2025-08-11 | Topper James N | Buy | 471 | 23.98 | 11,294 |
| 2025-07-16 | Kling Douglas F (Chief Operating Officer) | Sale | 153,129 | 21.10 | 3,231,021 |
| 2025-07-16 | Kling Douglas F (Chief Operating Officer) | Option Ex | 153,129 | 10.90 | 1,669,104 |
| 2025-07-15 | Kling Douglas F (Chief Operating Officer) | Sale | 142,707 | 21.75 | 3,103,875 |
| 2025-07-15 | Kling Douglas F (Chief Operating Officer) | Option Ex | 142,707 | 10.90 | 1,555,506 |
| 2025-06-25 | Topper James N | Buy | 1,260 | 18.26 | 23,011 |
| 2025-06-24 | Topper James N | Buy | 2,520 | 18.43 | 46,453 |
| 2025-06-16 | Kling Douglas F (Chief Operating Officer) | Sale | 100,000 | 19.47 | 1,947,000 |
| 2025-06-16 | Kling Douglas F (Chief Operating Officer) | Option Ex | 100,000 | 10.45 | 1,044,999 |
| 2025-06-16 | Topper James N | Buy | 8,584 | 19.50 | 167,379 |
| 2025-06-01 | Lange Louis G | Option Ex | 68 | .00 | 0 |
| 2025-05-15 | Kling Douglas F (Chief Operating Officer) | Sale | 100,000 | .00 | 0 |
| 2025-05-15 | Kling Douglas F (Chief Operating Officer) | Option Ex | 100,000 | 10.00 | 1,000,000 |
| 2025-05-01 | Lange Louis G | Option Ex | 69 | .00 | 0 |
| 2025-04-15 | Kling Douglas F (Chief Operating Officer) | Sale | 100,000 | .00 | 0 |
| 2025-04-15 | Kling Douglas F (Chief Operating Officer) | Option Ex | 100,000 | 10.00 | 1,000,000 |
| 2025-04-14 | Lange Louis G | Option Ex | 69 | .00 | 0 |
| 2025-03-26 | Kooij Louise Frederika (Chief Accounting Officer) | Option Ex | 8,269 | .00 | 0 |
| 2025-03-26 | Kastelein Johannes Jacob Pieter (Chief Scientific Officer) | Option Ex | 45,481 | .00 | 0 |
| 2025-03-26 | Kling Douglas F (Chief Operating Officer) | Sale | 16,539 | .00 | 0 |
| 2025-03-26 | Kling Douglas F (Chief Operating Officer) | Option Ex | 16,539 | .00 | 0 |
| 2025-03-26 | Davidson Michael H. (Chief Executive Officer) | Sale | 12,258 | .00 | 0 |
| 2025-03-26 | Davidson Michael H. (Chief Executive Officer) | Option Ex | 38,394 | .00 | 0 |
| 2025-03-26 | Topper James N | Buy | 1,135 | 22.48 | 25,520 |
| 2025-03-26 | Lange Louis G | Option Ex | 3,102 | .00 | 0 |
| 2025-03-24 | Kastelein Johannes Jacob Pieter (Chief Scientific Officer) | Option Ex | 150,000 | .00 | 0 |
| 2025-03-17 | Kling Douglas F (Chief Operating Officer) | Sale | 100,000 | .00 | 0 |
| 2025-03-17 | Kling Douglas F (Chief Operating Officer) | Option Ex | 100,000 | 5.00 | 500,000 |
| 2025-03-04 | Kooij Louise Frederika (Chief Accounting Officer) | Sale | 150,000 | 20.37 | 3,055,500 |
| 2025-03-04 | Kooij Louise Frederika (Chief Accounting Officer) | Option Ex | 150,000 | .00 | 0 |
| 2025-03-04 | Topper James N | Buy | 4,005 | 21.02 | 84,205 |
| 2025-01-30 | Kling Douglas F (Chief Operating Officer) | Sale | 13,578 | .00 | 0 |
| 2025-01-30 | Kling Douglas F (Chief Operating Officer) | Option Ex | 13,578 | .00 | 0 |
| 2025-01-29 | Kling Douglas F (Chief Operating Officer) | Sale | 56,863 | .00 | 0 |
| 2025-01-29 | Kling Douglas F (Chief Operating Officer) | Option Ex | 56,863 | .00 | 0 |
| 2025-01-28 | Kling Douglas F (Chief Operating Officer) | Sale | 25,385 | .00 | 0 |
| 2025-01-28 | Kling Douglas F (Chief Operating Officer) | Option Ex | 25,385 | .00 | 0 |
| 2025-01-27 | Kling Douglas F (Chief Operating Officer) | Sale | 104,174 | .00 | 0 |
| 2025-01-27 | Kling Douglas F (Chief Operating Officer) | Option Ex | 104,174 | .00 | 0 |
| 2024-12-19 | Forbion Growth Management B.v. | Sale | 56,506 | 25.45 | 1,437,795 |
| 2024-12-18 | Forbion Growth Management B.v. | Sale | 100,728 | 26.13 | 2,632,324 |
| 2024-12-17 | Forbion Growth Management B.v. | Sale | 114,384 | 26.02 | 2,976,729 |
| 2024-12-16 | Forbion Growth Management B.v. | Sale | 1,096 | 25.00 | 27,400 |
| 2024-12-13 | Forbion Growth Management B.v. | Sale | 25,751 | 25.01 | 644,058 |
| 2024-12-12 | Forbion Growth Management B.v. | Sale | 166,011 | 25.71 | 4,268,640 |
| 2024-12-11 | Forbion Growth Management B.v. | Sale | 154,038 | 26.26 | 4,044,883 |
| 2024-12-10 | Forbion Growth Management B.v. | Sale | 308,250 | 25.68 | 7,917,401 |
| 2024-11-18 | Forbion Growth Management B.v. | Sale | 33,273 | 25.08 | 834,453 |
| 2024-11-15 | Forbion Growth Management B.v. | Sale | 8,530 | 25.02 | 213,437 |
| 2024-11-14 | Forbion Growth Management B.v. | Sale | 9,832 | 25.01 | 245,858 |
| 2024-11-13 | Forbion Growth Management B.v. | Sale | 1,066 | 25.00 | 26,654 |
| 2024-10-01 | Kooij Louise Frederika (Chief Accounting Officer) | Sale | 45,000 | 15.72 | 707,400 |
| 2024-09-27 | Kooij Louise Frederika (Chief Accounting Officer) | Option Ex | 45,000 | .00 | 0 |
| 2024-09-26 | Audet Juliette Berangere (Chief Business Officer) | Buy | 1,104 | 15.70 | 17,332 |
| 2024-08-20 | Davidson Michael H. (Chief Executive Officer) | Buy | 5,000 | 16.27 | 81,350 |
| 2024-06-20 | Davidson Michael H. (Chief Executive Officer) | Buy | 5,000 | 17.26 | 86,310 |
| 2024-03-26 | Kastelein Johannes Jacob Pieter (Chief Scientific Officer) | Sale | 190,476 | 21.50 | 4,095,234 |
| 2024-03-26 | Kastelein Johannes Jacob Pieter (Chief Scientific Officer) | Option Ex | 201,673 | .00 | 0 |
| 2024-02-13 | Lange Louis G | Buy | 5,000 | 19.00 | 95,000 |
Insider trading activities including stock purchases, stock sales, and option exercises of NAMS listed in the above tables cannot be completely guaranteed as to their accuracy. For more insider trading information of Newamsterdam Pharma Co N.v. (symbol NAMS, CIK number 1936258) see the Securities and Exchange Commission (SEC) website.