James N. Topper, Director, 10% Owner at ALPINE IMMUNE SCIENCES, INC. (ALPN), bought 744,878 shares at $5.37 ($4.0M) on 2019-01-18, disclosed to the SEC on 2019-01-22.
High-signal trade — passes our conviction filters but the AI narrative is still being generated. Check back shortly.
Nothing distinguishes this filing.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $5.37 | 372,439 | $2.0M | 50.0% |
| 2 | $5.37 | 372,439 | $2.0M | 50.0% |
| Total | $5.37 avg | 744,878 | $4.0M | 100% |
| Filing → |
| NAMS | BUY | 2025-08-13 | $11K | — | Filing → |
| NAMS | BUY | 2025-06-26 | $69K | — | Filing → |
| NAMS | BUY | 2025-06-18 | $167K | — | Filing → |