Cormorant Global Healthcare GP, LLC, 10% Owner, Director at PROTEOSTASIS THERAPEUTICS, INC. (PTI), bought 340,782 shares at $10.28 ($3.5M) on 2016-11-29, disclosed to the SEC on 2016-12-01.
Open-market purchase of $3.5M PTI by 10% Owner, Director. Below the thresholds we flag for high-conviction alerts (no C-suite role, rare reversal, cluster, or A-grade history). Context: insider career grade D.
Negative factors outweigh the positive ones.
| # | Price | Shares | Value | % of Total |
|---|---|---|---|---|
| 1 | $10.28 | 128,407 | $1.3M | 37.8% |
| 2 | $10.28 | 128,407 | $1.3M | 37.8% |
| 3 | $10.11 | 41,984 | $424K | 12.2% |
| 4 | $10.11 | 41,984 | $424K | 12.2% |
| Total | $10.24 avg | 340,782 | $3.5M | 100% |
| Filing → |
| PTI | BUY | 2016-12-14 | $1.5M | — | Filing → |
| PTI | BUY | 2016-12-09 | $962K | — | Filing → |
| PTI | BUY | 2016-12-06 | $1.3M | — | Filing → |