Company · CIK 0001936258 · SIC 2834 — Pharmaceutical Preparations · Nasdaq
NewAmsterdam Pharma Co N.V. · NAMS
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 14, 2026 PForm 4 → | Sep 15, 4:30 pm EDT | Michael H. DavidsonChief Executive Officer, Director | 10,000 | $22.65 | $226,500 | 792,923 | +1.28% | |
| Sep 4, 2026 SForm 4 → | Sep 9, 4:30 pm EDT | John W SmitherDirector | 1,600 | $25.32 | $40,512 | 8,760 | −15.4% | |
| Sep 1, 2026 AForm 4 → | Sep 3, 4:30 pm EDT | Robert William GunningVice President, Controller | 3,200 | — | — | 3,200 | — | |
| Aug 24, 2026 SForm 4 → | Aug 25, 4:30 pm EDT | Johannes Jacob Pieter KasteleinChief Scientific Officer, Director | 125,000 | $26.91 | $3,363,750 | 69,302 | −64.3% | 10b5-1 |
| Aug 24, 2026 MForm 4 → | Aug 25, 4:30 pm EDT | Johannes Jacob Pieter KasteleinChief Scientific Officer, Director | 125,000 | — | — | 194,302 | — | 10b5-1 |
| Jul 20, 2026 SForm 4 → | Jul 22, 4:05 pm EDT | Louise Frederika KooijChief Accounting Officer | 105,000 | $30.34 | $3,185,656 | 24,353 | −81.2% | 10b5-1 |
| Jul 20, 2026 MForm 4 → | Jul 22, 4:05 pm EDT | Louise Frederika KooijChief Accounting Officer | 105,000 | $11.34 | $1,191,100 | 129,353 | — | 10b5-1 |
| Jun 22, 2026 SForm 4 → | Jun 24, 4:10 pm EDT | Louise Frederika KooijChief Accounting Officer | 40,000 | $30.20 | $1,208,159 | 24,353 | −62.2% | 10b5-1 |
| Jun 22, 2026 MForm 4 → | Jun 24, 4:10 pm EDT | Louise Frederika KooijChief Accounting Officer | 40,000 | $11.28 | $451,000 | 64,353 | — | 10b5-1 |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 1, 2026 AForm 4 → | Sep 3, 4:30 pm EDT | Robert William GunningVice President, Controller | 14,000 | — | — | 14,000 | — | |
| Aug 24, 2026 MForm 4 → | Aug 25, 4:30 pm EDT | Johannes Jacob Pieter KasteleinChief Scientific Officer, Director | 125,000 | — | — | 395,229 | — | 10b5-1 |
| Jul 20, 2026 MForm 4 → | Jul 22, 4:05 pm EDT | Louise Frederika KooijChief Accounting Officer | 105,000 | — | — | 70,494 | — | 10b5-1 |
| Jun 22, 2026 MForm 4 → | Jun 24, 4:10 pm EDT | Louise Frederika KooijChief Accounting Officer | 40,000 | — | — | 35,000 | — | 10b5-1 |