KPTI: Karyopharm Therapeutics Inc. insider trading, 5% holders and institutional ownership
From public SEC filings: open-market insider purchases and sales (Form 4, last 180 days), holders of 5% or more (Schedules 13D and 13G) and institutional ownership (Form 13F). Insider and 5% data delayed 48 hours.
Insider trading
0 open-market buys totaling - and 2 sales totaling $2K in the last 180 days.
Insider sales
| Trade date | Insider | Role | Value | 10b5-1 plan |
|---|---|---|---|---|
| 2026-10-16 | Abate Kristin | Officer | $2K | |
| 2026-10-01 | Abate Kristin | Officer | $450 |
Activist and 5% holders
| Filed | What | Holder | Stake | Change | Filing |
|---|---|---|---|---|---|
| 2026-10-08 | Fell below 5% | ACORN BIOVENTURES, L.P. | 4.50% | -1.20 pts | SEC |
| 2026-09-25 | 13G amendment | ACORN BIOVENTURES, L.P. | 5.70% | SEC | |
| 2026-09-25 | 13G amendment | ACORN BIOVENTURES, L.P. | 5.70% | SEC | |
| 2026-09-04 | New 13G stake | Integrated Core Strategies (US) LLC | 5.70% | SEC | |
| 2026-08-14 | 13G amendment | RA Capital Management, L.P. | 9.90% | SEC | |
| 2026-08-14 | Fell below 5% | Commodore Capital LP | 0.00% | SEC | |
| 2026-08-12 | 13G amendment | Adage Capital Management, L.P. | 6.78% | SEC | |
| 2026-08-11 | 13G amendment | THE GOLDMAN SACHS GROUP, INC. | 6.30% | SEC |
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