See how company executives and directors have been buying or selling shares over the past 30 days. Insider trading activity can help investors better understand company leadership's actions.
No Insider Transactions found for NewAmsterdam Pharma Co N.V.
Browse insider buying and selling activity reported to the SEC over the past year, including who traded, when they traded, and the value of each transaction.
DATE INSIDER |
INSIDER | TYPE | SHARES | PRICE | SHARES PRICE VALUE |
|---|---|---|---|---|---|
Sep 30, 2026 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
50,246 | $25.03 | 50,246 $25.03 $1,257,657 |
Sep 14, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Buy |
10,000 | $22.65 | 10,000 $22.65 $226,500 |
Sep 04, 2026 Smither John W |
Smither John W
|
Sell |
1,600 | $25.32 | 1,600 $25.32 $40,512 |
Aug 24, 2026 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
125,000 | $26.91 | 125,000 $26.91 $3,363,750 |
Jul 20, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
|
Sell |
2,915 | $31.71 | 2,915 $31.71 $92,435 |
Jul 20, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
|
Sell |
31,885 | $31.05 | 31,885 $31.05 $990,029 |
Jul 20, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
|
Sell |
70,200 | $29.96 | 70,200 $29.96 $2,103,192 |
Jun 22, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
|
Sell |
300 | $30.73 | 300 $30.73 $9,219 |
Jun 22, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
|
Sell |
39,700 | $30.20 | 39,700 $30.20 $1,198,940 |
May 26, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
65,000 | $35.69 | 65,000 $35.69 $2,319,850 |
Mar 11, 2026 LANGE LOUIS G |
LANGE LOUIS G
|
Sell |
44,173 | $30.41 | 44,173 $30.41 $1,343,301 |
Mar 11, 2026 LANGE LOUIS G |
LANGE LOUIS G
|
Sell |
446 | $31.23 | 446 $31.23 $13,929 |
Mar 09, 2026 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
101,409 | $30.29 | 101,409 $30.29 $3,071,679 |
Mar 06, 2026 LANGE LOUIS G |
LANGE LOUIS G
|
Sell |
28,186 | $29.41 | 28,186 $29.41 $828,950 |
Mar 06, 2026 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
94,124 | $30.32 | 94,124 $30.32 $2,853,840 |
Mar 05, 2026 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
104,467 | $30.30 | 104,467 $30.30 $3,165,350 |
Mar 02, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
443,707 | $33.25 | 443,707 $33.25 $14,753,258 |
Feb 26, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
165,408 | $33.63 | 165,408 $33.63 $5,562,671 |
Feb 26, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
17,924 | $34.44 | 17,924 $34.44 $617,303 |
Feb 25, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
46,517 | $35.11 | 46,517 $35.11 $1,633,212 |
Feb 25, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
10,436 | $35.96 | 10,436 $35.96 $375,279 |
Feb 25, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
1,300 | $36.68 | 1,300 $36.68 $47,684 |
Feb 24, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
3,161 | $36.46 | 3,161 $36.46 $115,250 |
Feb 24, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
61,547 | $36.13 | 61,547 $36.13 $2,223,693 |
Feb 20, 2026 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
30,789 | $35.46 | 30,789 $35.46 $1,091,778 |
Feb 20, 2026 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
14,692 | $35.00 | 14,692 $35.00 $514,220 |
Jan 28, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
32,612 | $31.80 | 32,612 $31.80 $1,037,062 |
Jan 27, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
39,816 | $32.62 | 39,816 $32.62 $1,298,798 |
Jan 26, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
34,091 | $32.77 | 34,091 $32.77 $1,117,162 |
Jan 26, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
309 | $33.45 | 309 $33.45 $10,336 |
Jan 23, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
25,405 | $33.44 | 25,405 $33.44 $849,543 |
Jan 23, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
12,767 | $34.37 | 12,767 $34.37 $438,802 |
Jan 21, 2026 Somaiya Mayur Ian |
Somaiya Mayur Ian
CFO
|
Sell |
15,422 | $33.25 | 15,422 $33.25 $512,782 |
Jan 21, 2026 Somaiya Mayur Ian |
Somaiya Mayur Ian
CFO
|
Sell |
24,362 | $33.80 | 24,362 $33.80 $823,436 |
Jan 20, 2026 Somaiya Mayur Ian |
Somaiya Mayur Ian
CFO
|
Sell |
19,604 | $32.38 | 19,604 $32.38 $634,778 |
Jan 20, 2026 Somaiya Mayur Ian |
Somaiya Mayur Ian
CFO
|
Sell |
39,712 | $31.78 | 39,712 $31.78 $1,262,047 |
Jan 20, 2026 Somaiya Mayur Ian |
Somaiya Mayur Ian
CFO
|
Sell |
900 | $30.64 | 900 $30.64 $27,576 |
Jan 07, 2026 Davidson Michael H. |
Davidson Michael H.
CEO
|
Sell |
11,582 | $0.00 | 11,582 $0.00 $0 |
Jan 05, 2026 Somaiya Mayur Ian |
Somaiya Mayur Ian
CFO
|
Sell |
5,118 | $33.25 | 5,118 $33.25 $170,174 |
Jan 05, 2026 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
6,000 | $33.25 | 6,000 $33.25 $199,500 |
Jan 05, 2026 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
2,647 | $33.25 | 2,647 $33.25 $88,013 |
Dec 26, 2025 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
43,872 | $35.30 | 43,872 $35.30 $1,548,682 |
Dec 24, 2025 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
26,011 | $35.68 | 26,011 $35.68 $928,072 |
Dec 23, 2025 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
75,117 | $36.21 | 75,117 $36.21 $2,719,987 |
View older insider trading records reported to the SEC to research long-term buying and selling trends.
DATE INSIDER |
INSIDER | TYPE | SHARES | PRICE | SHARES PRICE VALUE |
|---|---|---|---|---|---|
Sep 15, 2025 Topper James N |
Topper James N
|
Buy |
660 | $23.70 | 660 $23.70 $15,639 |
Sep 09, 2025 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
53,104 | $25.31 | 53,104 $25.31 $1,344,062 |
Sep 09, 2025 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
96,896 | $26.11 | 96,896 $26.11 $2,529,955 |
Sep 08, 2025 Topper James N |
Topper James N
|
Buy |
1,260 | $24.99 | 1,260 $24.99 $31,487 |
Sep 03, 2025 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
18,073 | $25.09 | 18,073 $25.09 $453,452 |
Aug 25, 2025 Kooij Louise Frederika |
Kooij Louise Frederika
CAO
|
Sell |
8,269 | $24.86 | 8,269 $24.86 $205,567 |
Aug 22, 2025 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
42,342 | $25.08 | 42,342 $25.08 $1,061,937 |
Aug 22, 2025 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
7,658 | $25.49 | 7,658 $25.49 $195,202 |
Aug 21, 2025 Kastelein Johannes Jacob Pieter |
Kastelein Johannes Jacob Pieter
Chief Scientific Officer
|
Sell |
50,000 | $24.29 | 50,000 $24.29 $1,214,500 |
Aug 11, 2025 Topper James N |
Topper James N
|
Buy |
471 | $23.98 | 471 $23.98 $11,294 |
Jul 16, 2025 Kling Douglas F |
Kling Douglas F
COO
|
Sell |
51,043 | $21.10 | 51,043 $21.10 $1,077,007 |
Jul 15, 2025 Kling Douglas F |
Kling Douglas F
COO
|
Sell |
44,025 | $21.38 | 44,025 $21.38 $941,255 |
Jul 15, 2025 Kling Douglas F |
Kling Douglas F
COO
|
Sell |
3,544 | $22.12 | 3,544 $22.12 $78,393 |
Jun 25, 2025 Topper James N |
Topper James N
|
Buy |
1,260 | $18.26 | 1,260 $18.26 $23,012 |
Jun 24, 2025 Topper James N |
Topper James N
|
Buy |
2,520 | $18.43 | 2,520 $18.43 $46,454 |
Jun 16, 2025 Kling Douglas F |
Kling Douglas F
COO
|
Sell |
81,891 | $19.19 | 81,891 $19.19 $1,571,488 |
Jun 16, 2025 Kling Douglas F |
Kling Douglas F
COO
|
Sell |
18,109 | $19.75 | 18,109 $19.75 $357,653 |
Jun 16, 2025 Topper James N |
Topper James N
|
Buy |
8,584 | $19.50 | 8,584 $19.50 $167,381 |
May 15, 2025 Kling Douglas F |
Kling Douglas F
COO
|
Sell |
100,000 | $0.00 | 100,000 $0.00 $0 |
Mar 26, 2025 Kling Douglas F |
Kling Douglas F
COO
|
Sell |
16,539 | $0.00 | 16,539 $0.00 $0 |
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