Stocks · Health care · Pharmaceutical Preparations

NewAmsterdam Pharma Co N.V.

NAMS Clue Score25

Netherlands Fiscal year ends December CIK 0001936258 Results filed 5 Aug 2026

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What the insiders did Net selling

By person

17 insiders · 117 transactions

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

NAP B.V. ForGrowth

10% owner

—

$30.02M (25) scheduled

−$30.02M

10,656,172

8.91%

$266.72M

−9.9%

Louise Frederika Kooij

Chief Accounting Officer

—

$25.05M (22) scheduled

−$25.05M

24,353

0.0204%

$609.56K

—

Michael H. Davidson

Chief Executive Officer

$394.16K (3)

$25.33M (10) scheduled

−$24.93M

1,078,638

0.9023%

$27.00M

+33.4%

Johannes Jacob Pieter Kastelein

Chief Scientific Officer

—

$22.08M (12) scheduled

−$22.08M

192,104

0.1607%

$4.81M

+177.2%

Douglas F Kling

Chief Operating Officer

—

$4.03M (19) scheduled

−$4.03M

44,000

0.0368%

$1.10M

—

Mayur Ian Somaiya

Chief Financial Officer

—

$3.43M (10) scheduled

−$3.43M

58,382

0.0488%

$1.46M

—

Louis G Lange

Director

$95.00K (1)

$2.19M (3)

−$2.09M

10,360

0.0087%

$259.31K

−47.9%

James N Topper

Director

$586.21K (9)

—

+$586.21K

3,028,524

2.53%

$75.80M

+0.9%

John W Smither

Director

—

$40.51K (1)

−$40.51K

8,760

0.0073%

$219.26K

—

Juliette Berangere Audet

See Remarks

$17.33K (1)

—

+$17.33K

15,104

0.0126%

$378.05K

—

Michael F Marino III

See Remarks

—

—

—

55,000

0.0460%

$1.38M

—

William A Jones Jr

Chief Commercial Officer

—

—

—

43,000

0.0360%

$1.08M

—

Adele M. Gulfo

Director

—

—

—

14,260

0.0119%

$356.93K

—

William Lewis

Director

—

—

—

10,360

0.0087%

$259.31K

—

Mark C. McKenna

Director

—

—

—

10,360

0.0087%

$259.31K

—

der Kamp Hilde Johanna van

Director

—

—

—

10,360

0.0087%

$259.31K

—

Robert William Gunning

Vice President, Controller

—

—

—

3,200

0.0027%

$80.10K

—