| Filed | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| 2026-08-25 | Kastelein Johannes Jacob Pieter Chief Scientific Officer | Sold | 125,000 | $26.91 | $3.4M |
| 2026-07-22 | Kooij Louise Frederika Chief Accounting Officer | Sold | 70,200 | $29.96 | $2.1M |
| 2026-06-24 | Kooij Louise Frederika Chief Accounting Officer | Sold | 39,700 | $30.20 | $1.2M |
| 2026-05-27 | Kooij Louise Frederika Chief Accounting Officer | Sold | 65,000 | $35.69 | $2.3M |
| 2026-03-12 | LANGE LOUIS G Director | Sold | 44,173 | $30.41 | $1.3M |
| 2026-03-09 | Kastelein Johannes Jacob Pieter Chief Scientific Officer | Sold | 300,000 | $30.30 | $9.1M |
| 2026-03-02 | Davidson Michael H. Chief Executive Officer | Sold | 443,707 | $33.25 | $14.8M |
| 2026-02-26 | Davidson Michael H. Chief Executive Officer | Sold | 273,472 | $34.44 | $9.4M |
| 2026-02-24 | Kastelein Johannes Jacob Pieter Chief Scientific Officer | Sold | 30,789 | $35.46 | $1.1M |
| 2026-01-29 | Kooij Louise Frederika Chief Accounting Officer | Sold | 72,428 | $32.25 | $2.3M |
| 2026-01-27 | Kooij Louise Frederika Chief Accounting Officer | Sold | 34,091 | $32.77 | $1.1M |
| 2026-01-22 | Somaiya Mayur Ian Chief Financial Officer | Sold | 39,712 | $31.78 | $1.3M |
| 2025-12-29 | Kooij Louise Frederika Chief Accounting Officer | Sold | 118,989 | $35.87 | $4.3M |
| 2025-09-17 | Topper James N Director | Bought | 660 | $23.70 | $16k |
| 2025-09-10 | Topper James N Director | Bought | 1,260 | $24.99 | $31k |
| 2025-09-10 | Kooij Louise Frederika Chief Accounting Officer | Sold | 150,000 | $25.83 | $3.9M |
| 2025-08-25 | Kastelein Johannes Jacob Pieter Chief Scientific Officer | Sold | 92,342 | $24.65 | $2.3M |
| 2025-08-13 | Topper James N Director | Bought | 471 | $23.98 | $11k |
| 2025-07-17 | Kling Douglas F Chief Operating Officer | Sold | 51,043 | $21.10 | $1.1M |
| 2025-06-26 | Topper James N Director | Bought | 3,780 | $18.37 | $69k |
| 2025-06-18 | Topper James N Director | Bought | 8,584 | $19.50 | $167k |
| 2025-06-18 | Kling Douglas F Chief Operating Officer | Sold | 81,891 | $19.19 | $1.6M |
| 2025-03-28 | Topper James N Director | Bought | 1,135 | $22.49 | $26k |
| 2025-03-06 | Topper James N Director | Bought | 4,005 | $21.02 | $84k |
| 2025-03-05 | Kooij Louise Frederika Chief Accounting Officer | Sold | 150,000 | $20.37 | $3.1M |
Showing the 25 most recent of 32 filings for NAMS in the last two years. The full history, the price chart with every buy and sell marked, and daily updates are in the members browser.
| Insider | Role | Buys | Total bought |
|---|---|---|---|
| Topper James N | Director | 7 | $405k |
| Audet Juliette Berangere | Chief Business Officer | 1 | $17k |
Every insider buy and sell for NAMS plotted on the price, the full two-year history, cluster scores and daily updates — in the members area, $29/month. A free quarterly sample of the whole dataset needs no account.
Open the browserFree sample