| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Insider activity in NAMS over the last quarter tilts toward selling: insiders offloaded a net 166,846 shares worth roughly $4.4M. In the past 30 days, 0 insiders bought and 1 sold. The bias lately has been to the sell side.
The insider who sold still holds shares after the sale. Classified under Biotechnology (Health Care sector), NAMS's insider flows are most useful compared with peers in the same group.
| Role | Insider | Shares | Value | 30d |
|---|---|---|---|---|
| CEO | 792.9K | $17.96M | - | |
| Other | 69.3K | - | -50,246 | |
| CFO | 58.4K | $540.6K | - | |
| Other | 24.4K | $756.2K | - | |
| Dir | 14.3K | - | - |
Buys and sells only
| Date | Insider | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | Kastelein Johannes Jacob Pieter54 | Chief Scientific Officer | Sale+OE10b5-1 | 50,246 | $25.03 | $1,257,657.38 | -42.0% | - | - | |
| Sep 14, 2026 | Davidson Michael H.65 | Chief Executive Officer | Buy | 10,000 | $22.65 | $226,500.00 | +1.3% | - | - | |
| Sep 4, 2026 | Smither John W65 | Director | Sell | 1,600 | $25.32 | $40,512.00 | -15.4% | - | - | |
| Aug 24, 2026 | Kastelein Johannes Jacob Pieter54 | Chief Scientific Officer | Sale+OE10b5-1 | 125,000 | $26.91 | $3,363,750.00 | -64.3% | - | - | |
| Jul 20, 2026 | Kooij Louise Frederika | Chief Accounting Officer | Sale+OE10b5-1 | 105,000 | $30.34 | $3,185,655.90 | -81.2% | -31.0% | - | |
| Jun 22, 2026 | Kooij Louise Frederika | Chief Accounting Officer | Sale+OE10b5-1 | 40,000 | $30.20 | $1,208,159.00 | -62.2% | -26.7% | - | |
| May 26, 2026 | Kooij Louise Frederika | Chief Accounting Officer | Sale+OE10b5-1 | 65,000 | $35.69 | $2,319,850.00 | -72.7% | -25.6% | - | |
| Mar 11, 2026 | Lange Louis G | Director | Sell | 44,619 | $30.42 | $1,357,229.51 | -81.2% | -3.1% | - | |
| Mar 9, 2026 | Kastelein Johannes Jacob Pieter54 | Chief Scientific Officer | Sale+OE10b5-1 | 300,000 | $30.30 | $9,090,868.39 | -81.2% | +0.6% | - | |
| Mar 6, 2026 | Lange Louis G | Director | Sell | 28,186 | $29.41 | $828,950.26 | -100% | +9.4% | - |