James N. Topper, Director at ALPINE IMMUNE SCIENCES, INC. (ALPN), sold 19 shares at $64.57 ($1K) on 2024-04-25, disclosed to the SEC on 2024-04-29.
Open-market sale of $1k ALPN by Director. Not flagged as scheduled, tax-driven, or recurring — but no specific bearish signal from our filters. Reasons for insider sales vary widely.
Nothing distinguishes this filing.
| Filing → |
| NAMS | BUY | 2025-08-13 | $11K | — | Filing → |
| NAMS | BUY | 2025-06-26 | $69K | — | Filing → |
| NAMS | BUY | 2025-06-18 | $167K | — | Filing → |